diff options
Diffstat (limited to 'drivers/media/common/saa7146')
| -rw-r--r-- | drivers/media/common/saa7146/Kconfig | 11 | ||||
| -rw-r--r-- | drivers/media/common/saa7146/Makefile | 5 | ||||
| -rw-r--r-- | drivers/media/common/saa7146/saa7146_core.c | 592 | ||||
| -rw-r--r-- | drivers/media/common/saa7146/saa7146_fops.c | 663 | ||||
| -rw-r--r-- | drivers/media/common/saa7146/saa7146_hlp.c | 1048 | ||||
| -rw-r--r-- | drivers/media/common/saa7146/saa7146_i2c.c | 423 | ||||
| -rw-r--r-- | drivers/media/common/saa7146/saa7146_vbi.c | 498 | ||||
| -rw-r--r-- | drivers/media/common/saa7146/saa7146_video.c | 1332 |
8 files changed, 4572 insertions, 0 deletions
diff --git a/drivers/media/common/saa7146/Kconfig b/drivers/media/common/saa7146/Kconfig new file mode 100644 index 0000000..c2fafc0 --- /dev/null +++ b/drivers/media/common/saa7146/Kconfig @@ -0,0 +1,11 @@ +config VIDEO_SAA7146 + tristate + depends on m + depends on I2C && PCI + +config VIDEO_SAA7146_VV + tristate + depends on m + depends on VIDEO_V4L2 + select VIDEOBUF_DMA_SG + select VIDEO_SAA7146 diff --git a/drivers/media/common/saa7146/Makefile b/drivers/media/common/saa7146/Makefile new file mode 100644 index 0000000..224f656 --- /dev/null +++ b/drivers/media/common/saa7146/Makefile @@ -0,0 +1,5 @@ +saa7146-objs := saa7146_i2c.o saa7146_core.o +saa7146_vv-objs := saa7146_fops.o saa7146_video.o saa7146_hlp.o saa7146_vbi.o + +obj-$(CPTCFG_VIDEO_SAA7146) += saa7146.o +obj-$(CPTCFG_VIDEO_SAA7146_VV) += saa7146_vv.o diff --git a/drivers/media/common/saa7146/saa7146_core.c b/drivers/media/common/saa7146/saa7146_core.c new file mode 100644 index 0000000..bb6ee51 --- /dev/null +++ b/drivers/media/common/saa7146/saa7146_core.c @@ -0,0 +1,592 @@ +/* + saa7146.o - driver for generic saa7146-based hardware + + Copyright (C) 1998-2003 Michael Hunold <michael@mihu.de> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <media/saa7146.h> +#include <linux/module.h> + +static int saa7146_num; + +unsigned int saa7146_debug; + +module_param(saa7146_debug, uint, 0644); +MODULE_PARM_DESC(saa7146_debug, "debug level (default: 0)"); + +#if 0 +static void dump_registers(struct saa7146_dev* dev) +{ + int i = 0; + + pr_info(" @ %li jiffies:\n", jiffies); + for (i = 0; i <= 0x148; i += 4) + pr_info("0x%03x: 0x%08x\n", i, saa7146_read(dev, i)); +} +#endif + +/**************************************************************************** + * gpio and debi helper functions + ****************************************************************************/ + +void saa7146_setgpio(struct saa7146_dev *dev, int port, u32 data) +{ + u32 value = 0; + + BUG_ON(port > 3); + + value = saa7146_read(dev, GPIO_CTRL); + value &= ~(0xff << (8*port)); + value |= (data << (8*port)); + saa7146_write(dev, GPIO_CTRL, value); +} + +/* This DEBI code is based on the saa7146 Stradis driver by Nathan Laredo */ +static inline int saa7146_wait_for_debi_done_sleep(struct saa7146_dev *dev, + unsigned long us1, unsigned long us2) +{ + unsigned long timeout; + int err; + + /* wait for registers to be programmed */ + timeout = jiffies + usecs_to_jiffies(us1); + while (1) { + err = time_after(jiffies, timeout); + if (saa7146_read(dev, MC2) & 2) + break; + if (err) { + pr_err("%s: %s timed out while waiting for registers getting programmed\n", + dev->name, __func__); + return -ETIMEDOUT; + } + msleep(1); + } + + /* wait for transfer to complete */ + timeout = jiffies + usecs_to_jiffies(us2); + while (1) { + err = time_after(jiffies, timeout); + if (!(saa7146_read(dev, PSR) & SPCI_DEBI_S)) + break; + saa7146_read(dev, MC2); + if (err) { + DEB_S("%s: %s timed out while waiting for transfer completion\n", + dev->name, __func__); + return -ETIMEDOUT; + } + msleep(1); + } + + return 0; +} + +static inline int saa7146_wait_for_debi_done_busyloop(struct saa7146_dev *dev, + unsigned long us1, unsigned long us2) +{ + unsigned long loops; + + /* wait for registers to be programmed */ + loops = us1; + while (1) { + if (saa7146_read(dev, MC2) & 2) + break; + if (!loops--) { + pr_err("%s: %s timed out while waiting for registers getting programmed\n", + dev->name, __func__); + return -ETIMEDOUT; + } + udelay(1); + } + + /* wait for transfer to complete */ + loops = us2 / 5; + while (1) { + if (!(saa7146_read(dev, PSR) & SPCI_DEBI_S)) + break; + saa7146_read(dev, MC2); + if (!loops--) { + DEB_S("%s: %s timed out while waiting for transfer completion\n", + dev->name, __func__); + return -ETIMEDOUT; + } + udelay(5); + } + + return 0; +} + +int saa7146_wait_for_debi_done(struct saa7146_dev *dev, int nobusyloop) +{ + if (nobusyloop) + return saa7146_wait_for_debi_done_sleep(dev, 50000, 250000); + else + return saa7146_wait_for_debi_done_busyloop(dev, 50000, 250000); +} + +/**************************************************************************** + * general helper functions + ****************************************************************************/ + +/* this is videobuf_vmalloc_to_sg() from videobuf-dma-sg.c + make sure virt has been allocated with vmalloc_32(), otherwise the BUG() + may be triggered on highmem machines */ +static struct scatterlist* vmalloc_to_sg(unsigned char *virt, int nr_pages) +{ + struct scatterlist *sglist; + struct page *pg; + int i; + + sglist = kcalloc(nr_pages, sizeof(struct scatterlist), GFP_KERNEL); + if (NULL == sglist) + return NULL; + sg_init_table(sglist, nr_pages); + for (i = 0; i < nr_pages; i++, virt += PAGE_SIZE) { + pg = vmalloc_to_page(virt); + if (NULL == pg) + goto err; + BUG_ON(PageHighMem(pg)); + sg_set_page(&sglist[i], pg, PAGE_SIZE, 0); + } + return sglist; + + err: + kfree(sglist); + return NULL; +} + +/********************************************************************************/ +/* common page table functions */ + +void *saa7146_vmalloc_build_pgtable(struct pci_dev *pci, long length, struct saa7146_pgtable *pt) +{ + int pages = (length+PAGE_SIZE-1)/PAGE_SIZE; + void *mem = vmalloc_32(length); + int slen = 0; + + if (NULL == mem) + goto err_null; + + if (!(pt->slist = vmalloc_to_sg(mem, pages))) + goto err_free_mem; + + if (saa7146_pgtable_alloc(pci, pt)) + goto err_free_slist; + + pt->nents = pages; + slen = pci_map_sg(pci,pt->slist,pt->nents,PCI_DMA_FROMDEVICE); + if (0 == slen) + goto err_free_pgtable; + + if (0 != saa7146_pgtable_build_single(pci, pt, pt->slist, slen)) + goto err_unmap_sg; + + return mem; + +err_unmap_sg: + pci_unmap_sg(pci, pt->slist, pt->nents, PCI_DMA_FROMDEVICE); +err_free_pgtable: + saa7146_pgtable_free(pci, pt); +err_free_slist: + kfree(pt->slist); + pt->slist = NULL; +err_free_mem: + vfree(mem); +err_null: + return NULL; +} + +void saa7146_vfree_destroy_pgtable(struct pci_dev *pci, void *mem, struct saa7146_pgtable *pt) +{ + pci_unmap_sg(pci, pt->slist, pt->nents, PCI_DMA_FROMDEVICE); + saa7146_pgtable_free(pci, pt); + kfree(pt->slist); + pt->slist = NULL; + vfree(mem); +} + +void saa7146_pgtable_free(struct pci_dev *pci, struct saa7146_pgtable *pt) +{ + if (NULL == pt->cpu) + return; + pci_free_consistent(pci, pt->size, pt->cpu, pt->dma); + pt->cpu = NULL; +} + +int saa7146_pgtable_alloc(struct pci_dev *pci, struct saa7146_pgtable *pt) +{ + __le32 *cpu; + dma_addr_t dma_addr = 0; + + cpu = pci_alloc_consistent(pci, PAGE_SIZE, &dma_addr); + if (NULL == cpu) { + return -ENOMEM; + } + pt->size = PAGE_SIZE; + pt->cpu = cpu; + pt->dma = dma_addr; + + return 0; +} + +int saa7146_pgtable_build_single(struct pci_dev *pci, struct saa7146_pgtable *pt, + struct scatterlist *list, int sglen ) +{ + __le32 *ptr, fill; + int nr_pages = 0; + int i,p; + + BUG_ON(0 == sglen); + BUG_ON(list->offset > PAGE_SIZE); + + /* if we have a user buffer, the first page may not be + aligned to a page boundary. */ + pt->offset = list->offset; + + ptr = pt->cpu; + for (i = 0; i < sglen; i++, list++) { +/* + pr_debug("i:%d, adr:0x%08x, len:%d, offset:%d\n", + i, sg_dma_address(list), sg_dma_len(list), + list->offset); +*/ + for (p = 0; p * 4096 < list->length; p++, ptr++) { + *ptr = cpu_to_le32(sg_dma_address(list) + p * 4096); + nr_pages++; + } + } + + + /* safety; fill the page table up with the last valid page */ + fill = *(ptr-1); + for(i=nr_pages;i<1024;i++) { + *ptr++ = fill; + } + +/* + ptr = pt->cpu; + pr_debug("offset: %d\n", pt->offset); + for(i=0;i<5;i++) { + pr_debug("ptr1 %d: 0x%08x\n", i, ptr[i]); + } +*/ + return 0; +} + +/********************************************************************************/ +/* interrupt handler */ +static irqreturn_t interrupt_hw(int irq, void *dev_id) +{ + struct saa7146_dev *dev = dev_id; + u32 isr; + u32 ack_isr; + + /* read out the interrupt status register */ + ack_isr = isr = saa7146_read(dev, ISR); + + /* is this our interrupt? */ + if ( 0 == isr ) { + /* nope, some other device */ + return IRQ_NONE; + } + + if (dev->ext) { + if (dev->ext->irq_mask & isr) { + if (dev->ext->irq_func) + dev->ext->irq_func(dev, &isr); + isr &= ~dev->ext->irq_mask; + } + } + if (0 != (isr & (MASK_27))) { + DEB_INT("irq: RPS0 (0x%08x)\n", isr); + if (dev->vv_data && dev->vv_callback) + dev->vv_callback(dev,isr); + isr &= ~MASK_27; + } + if (0 != (isr & (MASK_28))) { + if (dev->vv_data && dev->vv_callback) + dev->vv_callback(dev,isr); + isr &= ~MASK_28; + } + if (0 != (isr & (MASK_16|MASK_17))) { + SAA7146_IER_DISABLE(dev, MASK_16|MASK_17); + /* only wake up if we expect something */ + if (0 != dev->i2c_op) { + dev->i2c_op = 0; + wake_up(&dev->i2c_wq); + } else { + u32 psr = saa7146_read(dev, PSR); + u32 ssr = saa7146_read(dev, SSR); + pr_warn("%s: unexpected i2c irq: isr %08x psr %08x ssr %08x\n", + dev->name, isr, psr, ssr); + } + isr &= ~(MASK_16|MASK_17); + } + if( 0 != isr ) { + ERR("warning: interrupt enabled, but not handled properly.(0x%08x)\n", + isr); + ERR("disabling interrupt source(s)!\n"); + SAA7146_IER_DISABLE(dev,isr); + } + saa7146_write(dev, ISR, ack_isr); + return IRQ_HANDLED; +} + +/*********************************************************************************/ +/* configuration-functions */ + +static int saa7146_init_one(struct pci_dev *pci, const struct pci_device_id *ent) +{ + struct saa7146_pci_extension_data *pci_ext = (struct saa7146_pci_extension_data *)ent->driver_data; + struct saa7146_extension *ext = pci_ext->ext; + struct saa7146_dev *dev; + int err = -ENOMEM; + + /* clear out mem for sure */ + dev = kzalloc(sizeof(struct saa7146_dev), GFP_KERNEL); + if (!dev) { + ERR("out of memory\n"); + goto out; + } + + DEB_EE("pci:%p\n", pci); + + err = pci_enable_device(pci); + if (err < 0) { + ERR("pci_enable_device() failed\n"); + goto err_free; + } + + /* enable bus-mastering */ + pci_set_master(pci); + + dev->pci = pci; + + /* get chip-revision; this is needed to enable bug-fixes */ + dev->revision = pci->revision; + + /* remap the memory from virtual to physical address */ + + err = pci_request_region(pci, 0, "saa7146"); + if (err < 0) + goto err_disable; + + dev->mem = ioremap(pci_resource_start(pci, 0), + pci_resource_len(pci, 0)); + if (!dev->mem) { + ERR("ioremap() failed\n"); + err = -ENODEV; + goto err_release; + } + + /* we don't do a master reset here anymore, it screws up + some boards that don't have an i2c-eeprom for configuration + values */ +/* + saa7146_write(dev, MC1, MASK_31); +*/ + + /* disable all irqs */ + saa7146_write(dev, IER, 0); + + /* shut down all dma transfers and rps tasks */ + saa7146_write(dev, MC1, 0x30ff0000); + + /* clear out any rps-signals pending */ + saa7146_write(dev, MC2, 0xf8000000); + + /* request an interrupt for the saa7146 */ + err = request_irq(pci->irq, interrupt_hw, IRQF_SHARED | IRQF_DISABLED, + dev->name, dev); + if (err < 0) { + ERR("request_irq() failed\n"); + goto err_unmap; + } + + err = -ENOMEM; + + /* get memory for various stuff */ + dev->d_rps0.cpu_addr = pci_alloc_consistent(pci, SAA7146_RPS_MEM, + &dev->d_rps0.dma_handle); + if (!dev->d_rps0.cpu_addr) + goto err_free_irq; + memset(dev->d_rps0.cpu_addr, 0x0, SAA7146_RPS_MEM); + + dev->d_rps1.cpu_addr = pci_alloc_consistent(pci, SAA7146_RPS_MEM, + &dev->d_rps1.dma_handle); + if (!dev->d_rps1.cpu_addr) + goto err_free_rps0; + memset(dev->d_rps1.cpu_addr, 0x0, SAA7146_RPS_MEM); + + dev->d_i2c.cpu_addr = pci_alloc_consistent(pci, SAA7146_RPS_MEM, + &dev->d_i2c.dma_handle); + if (!dev->d_i2c.cpu_addr) + goto err_free_rps1; + memset(dev->d_i2c.cpu_addr, 0x0, SAA7146_RPS_MEM); + + /* the rest + print status message */ + + /* create a nice device name */ + sprintf(dev->name, "saa7146 (%d)", saa7146_num); + + pr_info("found saa7146 @ mem %p (revision %d, irq %d) (0x%04x,0x%04x)\n", + dev->mem, dev->revision, pci->irq, + pci->subsystem_vendor, pci->subsystem_device); + dev->ext = ext; + + mutex_init(&dev->v4l2_lock); + spin_lock_init(&dev->int_slock); + spin_lock_init(&dev->slock); + + mutex_init(&dev->i2c_lock); + + dev->module = THIS_MODULE; + init_waitqueue_head(&dev->i2c_wq); + + /* set some sane pci arbitrition values */ + saa7146_write(dev, PCI_BT_V1, 0x1c00101f); + + /* TODO: use the status code of the callback */ + + err = -ENODEV; + + if (ext->probe && ext->probe(dev)) { + DEB_D("ext->probe() failed for %p. skipping device.\n", dev); + goto err_free_i2c; + } + + if (ext->attach(dev, pci_ext)) { + DEB_D("ext->attach() failed for %p. skipping device.\n", dev); + goto err_free_i2c; + } + /* V4L extensions will set the pci drvdata to the v4l2_device in the + attach() above. So for those cards that do not use V4L we have to + set it explicitly. */ + pci_set_drvdata(pci, &dev->v4l2_dev); + + saa7146_num++; + + err = 0; +out: + return err; + +err_free_i2c: + pci_free_consistent(pci, SAA7146_RPS_MEM, dev->d_i2c.cpu_addr, + dev->d_i2c.dma_handle); +err_free_rps1: + pci_free_consistent(pci, SAA7146_RPS_MEM, dev->d_rps1.cpu_addr, + dev->d_rps1.dma_handle); +err_free_rps0: + pci_free_consistent(pci, SAA7146_RPS_MEM, dev->d_rps0.cpu_addr, + dev->d_rps0.dma_handle); +err_free_irq: + free_irq(pci->irq, (void *)dev); +err_unmap: + iounmap(dev->mem); +err_release: + pci_release_region(pci, 0); +err_disable: + pci_disable_device(pci); +err_free: + kfree(dev); + goto out; +} + +static void saa7146_remove_one(struct pci_dev *pdev) +{ + struct v4l2_device *v4l2_dev = pci_get_drvdata(pdev); + struct saa7146_dev *dev = to_saa7146_dev(v4l2_dev); + struct { + void *addr; + dma_addr_t dma; + } dev_map[] = { + { dev->d_i2c.cpu_addr, dev->d_i2c.dma_handle }, + { dev->d_rps1.cpu_addr, dev->d_rps1.dma_handle }, + { dev->d_rps0.cpu_addr, dev->d_rps0.dma_handle }, + { NULL, 0 } + }, *p; + + DEB_EE("dev:%p\n", dev); + + dev->ext->detach(dev); + /* Zero the PCI drvdata after use. */ + pci_set_drvdata(pdev, NULL); + + /* shut down all video dma transfers */ + saa7146_write(dev, MC1, 0x00ff0000); + + /* disable all irqs, release irq-routine */ + saa7146_write(dev, IER, 0); + + free_irq(pdev->irq, dev); + + for (p = dev_map; p->addr; p++) + pci_free_consistent(pdev, SAA7146_RPS_MEM, p->addr, p->dma); + + iounmap(dev->mem); + pci_release_region(pdev, 0); + pci_disable_device(pdev); + kfree(dev); + + saa7146_num--; +} + +/*********************************************************************************/ +/* extension handling functions */ + +int saa7146_register_extension(struct saa7146_extension* ext) +{ + DEB_EE("ext:%p\n", ext); + + ext->driver.name = ext->name; + ext->driver.id_table = ext->pci_tbl; + ext->driver.probe = saa7146_init_one; + ext->driver.remove = saa7146_remove_one; + + pr_info("register extension '%s'\n", ext->name); + return pci_register_driver(&ext->driver); +} + +int saa7146_unregister_extension(struct saa7146_extension* ext) +{ + DEB_EE("ext:%p\n", ext); + pr_info("unregister extension '%s'\n", ext->name); + pci_unregister_driver(&ext->driver); + return 0; +} + +EXPORT_SYMBOL_GPL(saa7146_register_extension); +EXPORT_SYMBOL_GPL(saa7146_unregister_extension); + +/* misc functions used by extension modules */ +EXPORT_SYMBOL_GPL(saa7146_pgtable_alloc); +EXPORT_SYMBOL_GPL(saa7146_pgtable_free); +EXPORT_SYMBOL_GPL(saa7146_pgtable_build_single); +EXPORT_SYMBOL_GPL(saa7146_vmalloc_build_pgtable); +EXPORT_SYMBOL_GPL(saa7146_vfree_destroy_pgtable); +EXPORT_SYMBOL_GPL(saa7146_wait_for_debi_done); + +EXPORT_SYMBOL_GPL(saa7146_setgpio); + +EXPORT_SYMBOL_GPL(saa7146_i2c_adapter_prepare); + +EXPORT_SYMBOL_GPL(saa7146_debug); + +MODULE_AUTHOR("Michael Hunold <michael@mihu.de>"); +MODULE_DESCRIPTION("driver for generic saa7146-based hardware"); +MODULE_LICENSE("GPL"); diff --git a/drivers/media/common/saa7146/saa7146_fops.c b/drivers/media/common/saa7146/saa7146_fops.c new file mode 100644 index 0000000..eda01bc --- /dev/null +++ b/drivers/media/common/saa7146/saa7146_fops.c @@ -0,0 +1,663 @@ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <media/saa7146_vv.h> +#include <linux/module.h> + +/****************************************************************************/ +/* resource management functions, shamelessly stolen from saa7134 driver */ + +int saa7146_res_get(struct saa7146_fh *fh, unsigned int bit) +{ + struct saa7146_dev *dev = fh->dev; + struct saa7146_vv *vv = dev->vv_data; + + if (fh->resources & bit) { + DEB_D("already allocated! want: 0x%02x, cur:0x%02x\n", + bit, vv->resources); + /* have it already allocated */ + return 1; + } + + /* is it free? */ + if (vv->resources & bit) { + DEB_D("locked! vv->resources:0x%02x, we want:0x%02x\n", + vv->resources, bit); + /* no, someone else uses it */ + return 0; + } + /* it's free, grab it */ + fh->resources |= bit; + vv->resources |= bit; + DEB_D("res: get 0x%02x, cur:0x%02x\n", bit, vv->resources); + return 1; +} + +void saa7146_res_free(struct saa7146_fh *fh, unsigned int bits) +{ + struct saa7146_dev *dev = fh->dev; + struct saa7146_vv *vv = dev->vv_data; + + BUG_ON((fh->resources & bits) != bits); + + fh->resources &= ~bits; + vv->resources &= ~bits; + DEB_D("res: put 0x%02x, cur:0x%02x\n", bits, vv->resources); +} + + +/********************************************************************************/ +/* common dma functions */ + +void saa7146_dma_free(struct saa7146_dev *dev,struct videobuf_queue *q, + struct saa7146_buf *buf) +{ + struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb); + DEB_EE("dev:%p, buf:%p\n", dev, buf); + + BUG_ON(in_interrupt()); + + videobuf_waiton(q, &buf->vb, 0, 0); + videobuf_dma_unmap(q->dev, dma); + videobuf_dma_free(dma); + buf->vb.state = VIDEOBUF_NEEDS_INIT; +} + + +/********************************************************************************/ +/* common buffer functions */ + +int saa7146_buffer_queue(struct saa7146_dev *dev, + struct saa7146_dmaqueue *q, + struct saa7146_buf *buf) +{ + assert_spin_locked(&dev->slock); + DEB_EE("dev:%p, dmaq:%p, buf:%p\n", dev, q, buf); + + BUG_ON(!q); + + if (NULL == q->curr) { + q->curr = buf; + DEB_D("immediately activating buffer %p\n", buf); + buf->activate(dev,buf,NULL); + } else { + list_add_tail(&buf->vb.queue,&q->queue); + buf->vb.state = VIDEOBUF_QUEUED; + DEB_D("adding buffer %p to queue. (active buffer present)\n", + buf); + } + return 0; +} + +void saa7146_buffer_finish(struct saa7146_dev *dev, + struct saa7146_dmaqueue *q, + int state) +{ + assert_spin_locked(&dev->slock); + DEB_EE("dev:%p, dmaq:%p, state:%d\n", dev, q, state); + DEB_EE("q->curr:%p\n", q->curr); + + BUG_ON(!q->curr); + + /* finish current buffer */ + if (NULL == q->curr) { + DEB_D("aiii. no current buffer\n"); + return; + } + + q->curr->vb.state = state; + v4l2_get_timestamp(&q->curr->vb.ts); + wake_up(&q->curr->vb.done); + + q->curr = NULL; +} + +void saa7146_buffer_next(struct saa7146_dev *dev, + struct saa7146_dmaqueue *q, int vbi) +{ + struct saa7146_buf *buf,*next = NULL; + + BUG_ON(!q); + + DEB_INT("dev:%p, dmaq:%p, vbi:%d\n", dev, q, vbi); + + assert_spin_locked(&dev->slock); + if (!list_empty(&q->queue)) { + /* activate next one from queue */ + buf = list_entry(q->queue.next,struct saa7146_buf,vb.queue); + list_del(&buf->vb.queue); + if (!list_empty(&q->queue)) + next = list_entry(q->queue.next,struct saa7146_buf, vb.queue); + q->curr = buf; + DEB_INT("next buffer: buf:%p, prev:%p, next:%p\n", + buf, q->queue.prev, q->queue.next); + buf->activate(dev,buf,next); + } else { + DEB_INT("no next buffer. stopping.\n"); + if( 0 != vbi ) { + /* turn off video-dma3 */ + saa7146_write(dev,MC1, MASK_20); + } else { + /* nothing to do -- just prevent next video-dma1 transfer + by lowering the protection address */ + + // fixme: fix this for vflip != 0 + + saa7146_write(dev, PROT_ADDR1, 0); + saa7146_write(dev, MC2, (MASK_02|MASK_18)); + + /* write the address of the rps-program */ + saa7146_write(dev, RPS_ADDR0, dev->d_rps0.dma_handle); + /* turn on rps */ + saa7146_write(dev, MC1, (MASK_12 | MASK_28)); + +/* + printk("vdma%d.base_even: 0x%08x\n", 1,saa7146_read(dev,BASE_EVEN1)); + printk("vdma%d.base_odd: 0x%08x\n", 1,saa7146_read(dev,BASE_ODD1)); + printk("vdma%d.prot_addr: 0x%08x\n", 1,saa7146_read(dev,PROT_ADDR1)); + printk("vdma%d.base_page: 0x%08x\n", 1,saa7146_read(dev,BASE_PAGE1)); + printk("vdma%d.pitch: 0x%08x\n", 1,saa7146_read(dev,PITCH1)); + printk("vdma%d.num_line_byte: 0x%08x\n", 1,saa7146_read(dev,NUM_LINE_BYTE1)); +*/ + } + del_timer(&q->timeout); + } +} + +void saa7146_buffer_timeout(unsigned long data) +{ + struct saa7146_dmaqueue *q = (struct saa7146_dmaqueue*)data; + struct saa7146_dev *dev = q->dev; + unsigned long flags; + + DEB_EE("dev:%p, dmaq:%p\n", dev, q); + + spin_lock_irqsave(&dev->slock,flags); + if (q->curr) { + DEB_D("timeout on %p\n", q->curr); + saa7146_buffer_finish(dev,q,VIDEOBUF_ERROR); + } + + /* we don't restart the transfer here like other drivers do. when + a streaming capture is disabled, the timeout function will be + called for the current buffer. if we activate the next buffer now, + we mess up our capture logic. if a timeout occurs on another buffer, + then something is seriously broken before, so no need to buffer the + next capture IMHO... */ +/* + saa7146_buffer_next(dev,q); +*/ + spin_unlock_irqrestore(&dev->slock,flags); +} + +/********************************************************************************/ +/* file operations */ + +static int fops_open(struct file *file) +{ + struct video_device *vdev = video_devdata(file); + struct saa7146_dev *dev = video_drvdata(file); + struct saa7146_fh *fh = NULL; + int result = 0; + + DEB_EE("file:%p, dev:%s\n", file, video_device_node_name(vdev)); + + if (mutex_lock_interruptible(vdev->lock)) + return -ERESTARTSYS; + + DEB_D("using: %p\n", dev); + + /* check if an extension is registered */ + if( NULL == dev->ext ) { + DEB_S("no extension registered for this device\n"); + result = -ENODEV; + goto out; + } + + /* allocate per open data */ + fh = kzalloc(sizeof(*fh),GFP_KERNEL); + if (NULL == fh) { + DEB_S("cannot allocate memory for per open data\n"); + result = -ENOMEM; + goto out; + } + + v4l2_fh_init(&fh->fh, vdev); + + file->private_data = &fh->fh; + fh->dev = dev; + + if (vdev->vfl_type == VFL_TYPE_VBI) { + DEB_S("initializing vbi...\n"); + if (dev->ext_vv_data->capabilities & V4L2_CAP_VBI_CAPTURE) + result = saa7146_vbi_uops.open(dev,file); + if (dev->ext_vv_data->vbi_fops.open) + dev->ext_vv_data->vbi_fops.open(file); + } else { + DEB_S("initializing video...\n"); + result = saa7146_video_uops.open(dev,file); + } + + if (0 != result) { + goto out; + } + + if( 0 == try_module_get(dev->ext->module)) { + result = -EINVAL; + goto out; + } + + result = 0; + v4l2_fh_add(&fh->fh); +out: + if (fh && result != 0) { + kfree(fh); + file->private_data = NULL; + } + mutex_unlock(vdev->lock); + return result; +} + +static int fops_release(struct file *file) +{ + struct video_device *vdev = video_devdata(file); + struct saa7146_fh *fh = file->private_data; + struct saa7146_dev *dev = fh->dev; + + DEB_EE("file:%p\n", file); + + mutex_lock(vdev->lock); + + if (vdev->vfl_type == VFL_TYPE_VBI) { + if (dev->ext_vv_data->capabilities & V4L2_CAP_VBI_CAPTURE) + saa7146_vbi_uops.release(dev,file); + if (dev->ext_vv_data->vbi_fops.release) + dev->ext_vv_data->vbi_fops.release(file); + } else { + saa7146_video_uops.release(dev,file); + } + + v4l2_fh_del(&fh->fh); + v4l2_fh_exit(&fh->fh); + module_put(dev->ext->module); + file->private_data = NULL; + kfree(fh); + + mutex_unlock(vdev->lock); + + return 0; +} + +static int fops_mmap(struct file *file, struct vm_area_struct * vma) +{ + struct video_device *vdev = video_devdata(file); + struct saa7146_fh *fh = file->private_data; + struct videobuf_queue *q; + int res; + + switch (vdev->vfl_type) { + case VFL_TYPE_GRABBER: { + DEB_EE("V4L2_BUF_TYPE_VIDEO_CAPTURE: file:%p, vma:%p\n", + file, vma); + q = &fh->video_q; + break; + } + case VFL_TYPE_VBI: { + DEB_EE("V4L2_BUF_TYPE_VBI_CAPTURE: file:%p, vma:%p\n", + file, vma); + if (fh->dev->ext_vv_data->capabilities & V4L2_CAP_SLICED_VBI_OUTPUT) + return -ENODEV; + q = &fh->vbi_q; + break; + } + default: + BUG(); + return 0; + } + + if (mutex_lock_interruptible(vdev->lock)) + return -ERESTARTSYS; + res = videobuf_mmap_mapper(q, vma); + mutex_unlock(vdev->lock); + return res; +} + +static unsigned int __fops_poll(struct file *file, struct poll_table_struct *wait) +{ + struct video_device *vdev = video_devdata(file); + struct saa7146_fh *fh = file->private_data; + struct videobuf_buffer *buf = NULL; + struct videobuf_queue *q; + unsigned int res = v4l2_ctrl_poll(file, wait); + + DEB_EE("file:%p, poll:%p\n", file, wait); + + if (vdev->vfl_type == VFL_TYPE_VBI) { + if (fh->dev->ext_vv_data->capabilities & V4L2_CAP_SLICED_VBI_OUTPUT) + return res | POLLOUT | POLLWRNORM; + if( 0 == fh->vbi_q.streaming ) + return res | videobuf_poll_stream(file, &fh->vbi_q, wait); + q = &fh->vbi_q; + } else { + DEB_D("using video queue\n"); + q = &fh->video_q; + } + + if (!list_empty(&q->stream)) + buf = list_entry(q->stream.next, struct videobuf_buffer, stream); + + if (!buf) { + DEB_D("buf == NULL!\n"); + return res | POLLERR; + } + + poll_wait(file, &buf->done, wait); + if (buf->state == VIDEOBUF_DONE || buf->state == VIDEOBUF_ERROR) { + DEB_D("poll succeeded!\n"); + return res | POLLIN | POLLRDNORM; + } + + DEB_D("nothing to poll for, buf->state:%d\n", buf->state); + return res; +} + +static unsigned int fops_poll(struct file *file, struct poll_table_struct *wait) +{ + struct video_device *vdev = video_devdata(file); + unsigned int res; + + mutex_lock(vdev->lock); + res = __fops_poll(file, wait); + mutex_unlock(vdev->lock); + return res; +} + +static ssize_t fops_read(struct file *file, char __user *data, size_t count, loff_t *ppos) +{ + struct video_device *vdev = video_devdata(file); + struct saa7146_fh *fh = file->private_data; + int ret; + + switch (vdev->vfl_type) { + case VFL_TYPE_GRABBER: +/* + DEB_EE("V4L2_BUF_TYPE_VIDEO_CAPTURE: file:%p, data:%p, count:%lun", + file, data, (unsigned long)count); +*/ + return saa7146_video_uops.read(file,data,count,ppos); + case VFL_TYPE_VBI: +/* + DEB_EE("V4L2_BUF_TYPE_VBI_CAPTURE: file:%p, data:%p, count:%lu\n", + file, data, (unsigned long)count); +*/ + if (fh->dev->ext_vv_data->capabilities & V4L2_CAP_VBI_CAPTURE) { + if (mutex_lock_interruptible(vdev->lock)) + return -ERESTARTSYS; + ret = saa7146_vbi_uops.read(file, data, count, ppos); + mutex_unlock(vdev->lock); + return ret; + } + return -EINVAL; + default: + BUG(); + return 0; + } +} + +static ssize_t fops_write(struct file *file, const char __user *data, size_t count, loff_t *ppos) +{ + struct video_device *vdev = video_devdata(file); + struct saa7146_fh *fh = file->private_data; + int ret; + + switch (vdev->vfl_type) { + case VFL_TYPE_GRABBER: + return -EINVAL; + case VFL_TYPE_VBI: + if (fh->dev->ext_vv_data->vbi_fops.write) { + if (mutex_lock_interruptible(vdev->lock)) + return -ERESTARTSYS; + ret = fh->dev->ext_vv_data->vbi_fops.write(file, data, count, ppos); + mutex_unlock(vdev->lock); + return ret; + } + return -EINVAL; + default: + BUG(); + return -EINVAL; + } +} + +static const struct v4l2_file_operations video_fops = +{ + .owner = THIS_MODULE, + .open = fops_open, + .release = fops_release, + .read = fops_read, + .write = fops_write, + .poll = fops_poll, + .mmap = fops_mmap, + .unlocked_ioctl = video_ioctl2, +}; + +static void vv_callback(struct saa7146_dev *dev, unsigned long status) +{ + u32 isr = status; + + DEB_INT("dev:%p, isr:0x%08x\n", dev, (u32)status); + + if (0 != (isr & (MASK_27))) { + DEB_INT("irq: RPS0 (0x%08x)\n", isr); + saa7146_video_uops.irq_done(dev,isr); + } + + if (0 != (isr & (MASK_28))) { + u32 mc2 = saa7146_read(dev, MC2); + if( 0 != (mc2 & MASK_15)) { + DEB_INT("irq: RPS1 vbi workaround (0x%08x)\n", isr); + wake_up(&dev->vv_data->vbi_wq); + saa7146_write(dev,MC2, MASK_31); + return; + } + DEB_INT("irq: RPS1 (0x%08x)\n", isr); + saa7146_vbi_uops.irq_done(dev,isr); + } +} + +static const struct v4l2_ctrl_ops saa7146_ctrl_ops = { + .s_ctrl = saa7146_s_ctrl, +}; + +int saa7146_vv_init(struct saa7146_dev* dev, struct saa7146_ext_vv *ext_vv) +{ + struct v4l2_ctrl_handler *hdl = &dev->ctrl_handler; + struct v4l2_pix_format *fmt; + struct v4l2_vbi_format *vbi; + struct saa7146_vv *vv; + int err; + + err = v4l2_device_register(&dev->pci->dev, &dev->v4l2_dev); + if (err) + return err; + + v4l2_ctrl_handler_init(hdl, 6); + v4l2_ctrl_new_std(hdl, &saa7146_ctrl_ops, + V4L2_CID_BRIGHTNESS, 0, 255, 1, 128); + v4l2_ctrl_new_std(hdl, &saa7146_ctrl_ops, + V4L2_CID_CONTRAST, 0, 127, 1, 64); + v4l2_ctrl_new_std(hdl, &saa7146_ctrl_ops, + V4L2_CID_SATURATION, 0, 127, 1, 64); + v4l2_ctrl_new_std(hdl, &saa7146_ctrl_ops, + V4L2_CID_VFLIP, 0, 1, 1, 0); + v4l2_ctrl_new_std(hdl, &saa7146_ctrl_ops, + V4L2_CID_HFLIP, 0, 1, 1, 0); + if (hdl->error) { + err = hdl->error; + v4l2_ctrl_handler_free(hdl); + return err; + } + dev->v4l2_dev.ctrl_handler = hdl; + + vv = kzalloc(sizeof(struct saa7146_vv), GFP_KERNEL); + if (vv == NULL) { + ERR("out of memory. aborting.\n"); + v4l2_ctrl_handler_free(hdl); + return -ENOMEM; + } + ext_vv->vid_ops = saa7146_video_ioctl_ops; + ext_vv->vbi_ops = saa7146_vbi_ioctl_ops; + ext_vv->core_ops = &saa7146_video_ioctl_ops; + + DEB_EE("dev:%p\n", dev); + + /* set default values for video parts of the saa7146 */ + saa7146_write(dev, BCS_CTRL, 0x80400040); + + /* enable video-port pins */ + saa7146_write(dev, MC1, (MASK_10 | MASK_26)); + + /* save per-device extension data (one extension can + handle different devices that might need different + configuration data) */ + dev->ext_vv_data = ext_vv; + + vv->d_clipping.cpu_addr = pci_alloc_consistent(dev->pci, SAA7146_CLIPPING_MEM, &vv->d_clipping.dma_handle); + if( NULL == vv->d_clipping.cpu_addr ) { + ERR("out of memory. aborting.\n"); + kfree(vv); + v4l2_ctrl_handler_free(hdl); + return -1; + } + memset(vv->d_clipping.cpu_addr, 0x0, SAA7146_CLIPPING_MEM); + + saa7146_video_uops.init(dev,vv); + if (dev->ext_vv_data->capabilities & V4L2_CAP_VBI_CAPTURE) + saa7146_vbi_uops.init(dev,vv); + + fmt = &vv->ov_fb.fmt; + fmt->width = vv->standard->h_max_out; + fmt->height = vv->standard->v_max_out; + fmt->pixelformat = V4L2_PIX_FMT_RGB565; + fmt->bytesperline = 2 * fmt->width; + fmt->sizeimage = fmt->bytesperline * fmt->height; + fmt->colorspace = V4L2_COLORSPACE_SRGB; + + fmt = &vv->video_fmt; + fmt->width = 384; + fmt->height = 288; + fmt->pixelformat = V4L2_PIX_FMT_BGR24; + fmt->field = V4L2_FIELD_ANY; + fmt->colorspace = V4L2_COLORSPACE_SMPTE170M; + fmt->bytesperline = 3 * fmt->width; + fmt->sizeimage = fmt->bytesperline * fmt->height; + + vbi = &vv->vbi_fmt; + vbi->sampling_rate = 27000000; + vbi->offset = 248; /* todo */ + vbi->samples_per_line = 720 * 2; + vbi->sample_format = V4L2_PIX_FMT_GREY; + + /* fixme: this only works for PAL */ + vbi->start[0] = 5; + vbi->count[0] = 16; + vbi->start[1] = 312; + vbi->count[1] = 16; + + init_timer(&vv->vbi_read_timeout); + + vv->ov_fb.capability = V4L2_FBUF_CAP_LIST_CLIPPING; + vv->ov_fb.flags = V4L2_FBUF_FLAG_PRIMARY; + dev->vv_data = vv; + dev->vv_callback = &vv_callback; + + return 0; +} +EXPORT_SYMBOL_GPL(saa7146_vv_init); + +int saa7146_vv_release(struct saa7146_dev* dev) +{ + struct saa7146_vv *vv = dev->vv_data; + + DEB_EE("dev:%p\n", dev); + + v4l2_device_unregister(&dev->v4l2_dev); + pci_free_consistent(dev->pci, SAA7146_CLIPPING_MEM, vv->d_clipping.cpu_addr, vv->d_clipping.dma_handle); + v4l2_ctrl_handler_free(&dev->ctrl_handler); + kfree(vv); + dev->vv_data = NULL; + dev->vv_callback = NULL; + + return 0; +} +EXPORT_SYMBOL_GPL(saa7146_vv_release); + +int saa7146_register_device(struct video_device **vid, struct saa7146_dev* dev, + char *name, int type) +{ + struct video_device *vfd; + int err; + int i; + + DEB_EE("dev:%p, name:'%s', type:%d\n", dev, name, type); + + // released by vfd->release + vfd = video_device_alloc(); + if (vfd == NULL) + return -ENOMEM; + + vfd->fops = &video_fops; + if (type == VFL_TYPE_GRABBER) + vfd->ioctl_ops = &dev->ext_vv_data->vid_ops; + else + vfd->ioctl_ops = &dev->ext_vv_data->vbi_ops; + vfd->release = video_device_release; + vfd->lock = &dev->v4l2_lock; + vfd->v4l2_dev = &dev->v4l2_dev; + vfd->tvnorms = 0; + set_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags); + for (i = 0; i < dev->ext_vv_data->num_stds; i++) + vfd->tvnorms |= dev->ext_vv_data->stds[i].id; + strlcpy(vfd->name, name, sizeof(vfd->name)); + video_set_drvdata(vfd, dev); + + err = video_register_device(vfd, type, -1); + if (err < 0) { + ERR("cannot register v4l2 device. skipping.\n"); + video_device_release(vfd); + return err; + } + + pr_info("%s: registered device %s [v4l2]\n", + dev->name, video_device_node_name(vfd)); + + *vid = vfd; + return 0; +} +EXPORT_SYMBOL_GPL(saa7146_register_device); + +int saa7146_unregister_device(struct video_device **vid, struct saa7146_dev* dev) +{ + DEB_EE("dev:%p\n", dev); + + video_unregister_device(*vid); + *vid = NULL; + + return 0; +} +EXPORT_SYMBOL_GPL(saa7146_unregister_device); + +static int __init saa7146_vv_init_module(void) +{ + return 0; +} + + +static void __exit saa7146_vv_cleanup_module(void) +{ +} + +module_init(saa7146_vv_init_module); +module_exit(saa7146_vv_cleanup_module); + +MODULE_AUTHOR("Michael Hunold <michael@mihu.de>"); +MODULE_DESCRIPTION("video4linux driver for saa7146-based hardware"); +MODULE_LICENSE("GPL"); diff --git a/drivers/media/common/saa7146/saa7146_hlp.c b/drivers/media/common/saa7146/saa7146_hlp.c new file mode 100644 index 0000000..be746d1 --- /dev/null +++ b/drivers/media/common/saa7146/saa7146_hlp.c @@ -0,0 +1,1048 @@ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/kernel.h> +#include <linux/export.h> +#include <media/saa7146_vv.h> + +static void calculate_output_format_register(struct saa7146_dev* saa, u32 palette, u32* clip_format) +{ + /* clear out the necessary bits */ + *clip_format &= 0x0000ffff; + /* set these bits new */ + *clip_format |= (( ((palette&0xf00)>>8) << 30) | ((palette&0x00f) << 24) | (((palette&0x0f0)>>4) << 16)); +} + +static void calculate_hps_source_and_sync(struct saa7146_dev *dev, int source, int sync, u32* hps_ctrl) +{ + *hps_ctrl &= ~(MASK_30 | MASK_31 | MASK_28); + *hps_ctrl |= (source << 30) | (sync << 28); +} + +static void calculate_hxo_and_hyo(struct saa7146_vv *vv, u32* hps_h_scale, u32* hps_ctrl) +{ + int hyo = 0, hxo = 0; + + hyo = vv->standard->v_offset; + hxo = vv->standard->h_offset; + + *hps_h_scale &= ~(MASK_B0 | 0xf00); + *hps_h_scale |= (hxo << 0); + + *hps_ctrl &= ~(MASK_W0 | MASK_B2); + *hps_ctrl |= (hyo << 12); +} + +/* helper functions for the calculation of the horizontal- and vertical + scaling registers, clip-format-register etc ... + these functions take pointers to the (most-likely read-out + original-values) and manipulate them according to the requested + changes. +*/ + +/* hps_coeff used for CXY and CXUV; scale 1/1 -> scale 1/64 */ +static struct { + u16 hps_coeff; + u16 weight_sum; +} hps_h_coeff_tab [] = { + {0x00, 2}, {0x02, 4}, {0x00, 4}, {0x06, 8}, {0x02, 8}, + {0x08, 8}, {0x00, 8}, {0x1E, 16}, {0x0E, 8}, {0x26, 8}, + {0x06, 8}, {0x42, 8}, {0x02, 8}, {0x80, 8}, {0x00, 8}, + {0xFE, 16}, {0xFE, 8}, {0x7E, 8}, {0x7E, 8}, {0x3E, 8}, + {0x3E, 8}, {0x1E, 8}, {0x1E, 8}, {0x0E, 8}, {0x0E, 8}, + {0x06, 8}, {0x06, 8}, {0x02, 8}, {0x02, 8}, {0x00, 8}, + {0x00, 8}, {0xFE, 16}, {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, + {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, + {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, + {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, {0x7E, 8}, + {0x7E, 8}, {0x3E, 8}, {0x3E, 8}, {0x1E, 8}, {0x1E, 8}, + {0x0E, 8}, {0x0E, 8}, {0x06, 8}, {0x06, 8}, {0x02, 8}, + {0x02, 8}, {0x00, 8}, {0x00, 8}, {0xFE, 16} +}; + +/* table of attenuation values for horizontal scaling */ +static u8 h_attenuation[] = { 1, 2, 4, 8, 2, 4, 8, 16, 0}; + +/* calculate horizontal scale registers */ +static int calculate_h_scale_registers(struct saa7146_dev *dev, + int in_x, int out_x, int flip_lr, + u32* hps_ctrl, u32* hps_v_gain, u32* hps_h_prescale, u32* hps_h_scale) +{ + /* horizontal prescaler */ + u32 dcgx = 0, xpsc = 0, xacm = 0, cxy = 0, cxuv = 0; + /* horizontal scaler */ + u32 xim = 0, xp = 0, xsci =0; + /* vertical scale & gain */ + u32 pfuv = 0; + + /* helper variables */ + u32 h_atten = 0, i = 0; + + if ( 0 == out_x ) { + return -EINVAL; + } + + /* mask out vanity-bit */ + *hps_ctrl &= ~MASK_29; + + /* calculate prescale-(xspc)-value: [n .. 1/2) : 1 + [1/2 .. 1/3) : 2 + [1/3 .. 1/4) : 3 + ... */ + if (in_x > out_x) { + xpsc = in_x / out_x; + } + else { + /* zooming */ + xpsc = 1; + } + + /* if flip_lr-bit is set, number of pixels after + horizontal prescaling must be < 384 */ + if ( 0 != flip_lr ) { + + /* set vanity bit */ + *hps_ctrl |= MASK_29; + + while (in_x / xpsc >= 384 ) + xpsc++; + } + /* if zooming is wanted, number of pixels after + horizontal prescaling must be < 768 */ + else { + while ( in_x / xpsc >= 768 ) + xpsc++; + } + + /* maximum prescale is 64 (p.69) */ + if ( xpsc > 64 ) + xpsc = 64; + + /* keep xacm clear*/ + xacm = 0; + + /* set horizontal filter parameters (CXY = CXUV) */ + cxy = hps_h_coeff_tab[( (xpsc - 1) < 63 ? (xpsc - 1) : 63 )].hps_coeff; + cxuv = cxy; + + /* calculate and set horizontal fine scale (xsci) */ + + /* bypass the horizontal scaler ? */ + if ( (in_x == out_x) && ( 1 == xpsc ) ) + xsci = 0x400; + else + xsci = ( (1024 * in_x) / (out_x * xpsc) ) + xpsc; + + /* set start phase for horizontal fine scale (xp) to 0 */ + xp = 0; + + /* set xim, if we bypass the horizontal scaler */ + if ( 0x400 == xsci ) + xim = 1; + else + xim = 0; + + /* if the prescaler is bypassed, enable horizontal + accumulation mode (xacm) and clear dcgx */ + if( 1 == xpsc ) { + xacm = 1; + dcgx = 0; + } else { + xacm = 0; + /* get best match in the table of attenuations + for horizontal scaling */ + h_atten = hps_h_coeff_tab[( (xpsc - 1) < 63 ? (xpsc - 1) : 63 )].weight_sum; + + for (i = 0; h_attenuation[i] != 0; i++) { + if (h_attenuation[i] >= h_atten) + break; + } + + dcgx = i; + } + + /* the horizontal scaling increment controls the UV filter + to reduce the bandwidth to improve the display quality, + so set it ... */ + if ( xsci == 0x400) + pfuv = 0x00; + else if ( xsci < 0x600) + pfuv = 0x01; + else if ( xsci < 0x680) + pfuv = 0x11; + else if ( xsci < 0x700) + pfuv = 0x22; + else + pfuv = 0x33; + + + *hps_v_gain &= MASK_W0|MASK_B2; + *hps_v_gain |= (pfuv << 24); + + *hps_h_scale &= ~(MASK_W1 | 0xf000); + *hps_h_scale |= (xim << 31) | (xp << 24) | (xsci << 12); + + *hps_h_prescale |= (dcgx << 27) | ((xpsc-1) << 18) | (xacm << 17) | (cxy << 8) | (cxuv << 0); + + return 0; +} + +static struct { + u16 hps_coeff; + u16 weight_sum; +} hps_v_coeff_tab [] = { + {0x0100, 2}, {0x0102, 4}, {0x0300, 4}, {0x0106, 8}, {0x0502, 8}, + {0x0708, 8}, {0x0F00, 8}, {0x011E, 16}, {0x110E, 16}, {0x1926, 16}, + {0x3906, 16}, {0x3D42, 16}, {0x7D02, 16}, {0x7F80, 16}, {0xFF00, 16}, + {0x01FE, 32}, {0x01FE, 32}, {0x817E, 32}, {0x817E, 32}, {0xC13E, 32}, + {0xC13E, 32}, {0xE11E, 32}, {0xE11E, 32}, {0xF10E, 32}, {0xF10E, 32}, + {0xF906, 32}, {0xF906, 32}, {0xFD02, 32}, {0xFD02, 32}, {0xFF00, 32}, + {0xFF00, 32}, {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, + {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, + {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, + {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, {0x817E, 64}, + {0x817E, 64}, {0xC13E, 64}, {0xC13E, 64}, {0xE11E, 64}, {0xE11E, 64}, + {0xF10E, 64}, {0xF10E, 64}, {0xF906, 64}, {0xF906, 64}, {0xFD02, 64}, + {0xFD02, 64}, {0xFF00, 64}, {0xFF00, 64}, {0x01FE, 128} +}; + +/* table of attenuation values for vertical scaling */ +static u16 v_attenuation[] = { 2, 4, 8, 16, 32, 64, 128, 256, 0}; + +/* calculate vertical scale registers */ +static int calculate_v_scale_registers(struct saa7146_dev *dev, enum v4l2_field field, + int in_y, int out_y, u32* hps_v_scale, u32* hps_v_gain) +{ + int lpi = 0; + + /* vertical scaling */ + u32 yacm = 0, ysci = 0, yacl = 0, ypo = 0, ype = 0; + /* vertical scale & gain */ + u32 dcgy = 0, cya_cyb = 0; + + /* helper variables */ + u32 v_atten = 0, i = 0; + + /* error, if vertical zooming */ + if ( in_y < out_y ) { + return -EINVAL; + } + + /* linear phase interpolation may be used + if scaling is between 1 and 1/2 (both fields used) + or scaling is between 1/2 and 1/4 (if only one field is used) */ + + if (V4L2_FIELD_HAS_BOTH(field)) { + if( 2*out_y >= in_y) { + lpi = 1; + } + } else if (field == V4L2_FIELD_TOP + || field == V4L2_FIELD_ALTERNATE + || field == V4L2_FIELD_BOTTOM) { + if( 4*out_y >= in_y ) { + lpi = 1; + } + out_y *= 2; + } + if( 0 != lpi ) { + + yacm = 0; + yacl = 0; + cya_cyb = 0x00ff; + + /* calculate scaling increment */ + if ( in_y > out_y ) + ysci = ((1024 * in_y) / (out_y + 1)) - 1024; + else + ysci = 0; + + dcgy = 0; + + /* calculate ype and ypo */ + ype = ysci / 16; + ypo = ype + (ysci / 64); + + } else { + yacm = 1; + + /* calculate scaling increment */ + ysci = (((10 * 1024 * (in_y - out_y - 1)) / in_y) + 9) / 10; + + /* calculate ype and ypo */ + ypo = ype = ((ysci + 15) / 16); + + /* the sequence length interval (yacl) has to be set according + to the prescale value, e.g. [n .. 1/2) : 0 + [1/2 .. 1/3) : 1 + [1/3 .. 1/4) : 2 + ... */ + if ( ysci < 512) { + yacl = 0; + } else { + yacl = ( ysci / (1024 - ysci) ); + } + + /* get filter coefficients for cya, cyb from table hps_v_coeff_tab */ + cya_cyb = hps_v_coeff_tab[ (yacl < 63 ? yacl : 63 ) ].hps_coeff; + + /* get best match in the table of attenuations for vertical scaling */ + v_atten = hps_v_coeff_tab[ (yacl < 63 ? yacl : 63 ) ].weight_sum; + + for (i = 0; v_attenuation[i] != 0; i++) { + if (v_attenuation[i] >= v_atten) + break; + } + + dcgy = i; + } + + /* ypo and ype swapped in spec ? */ + *hps_v_scale |= (yacm << 31) | (ysci << 21) | (yacl << 15) | (ypo << 8 ) | (ype << 1); + + *hps_v_gain &= ~(MASK_W0|MASK_B2); + *hps_v_gain |= (dcgy << 16) | (cya_cyb << 0); + + return 0; +} + +/* simple bubble-sort algorithm with duplicate elimination */ +static int sort_and_eliminate(u32* values, int* count) +{ + int low = 0, high = 0, top = 0, temp = 0; + int cur = 0, next = 0; + + /* sanity checks */ + if( (0 > *count) || (NULL == values) ) { + return -EINVAL; + } + + /* bubble sort the first @count items of the array @values */ + for( top = *count; top > 0; top--) { + for( low = 0, high = 1; high < top; low++, high++) { + if( values[low] > values[high] ) { + temp = values[low]; + values[low] = values[high]; + values[high] = temp; + } + } + } + + /* remove duplicate items */ + for( cur = 0, next = 1; next < *count; next++) { + if( values[cur] != values[next]) + values[++cur] = values[next]; + } + + *count = cur + 1; + + return 0; +} + +static void calculate_clipping_registers_rect(struct saa7146_dev *dev, struct saa7146_fh *fh, + struct saa7146_video_dma *vdma2, u32* clip_format, u32* arbtr_ctrl, enum v4l2_field field) +{ + struct saa7146_vv *vv = dev->vv_data; + __le32 *clipping = vv->d_clipping.cpu_addr; + + int width = vv->ov.win.w.width; + int height = vv->ov.win.w.height; + int clipcount = vv->ov.nclips; + + u32 line_list[32]; + u32 pixel_list[32]; + int numdwords = 0; + + int i = 0, j = 0; + int cnt_line = 0, cnt_pixel = 0; + + int x[32], y[32], w[32], h[32]; + + /* clear out memory */ + memset(&line_list[0], 0x00, sizeof(u32)*32); + memset(&pixel_list[0], 0x00, sizeof(u32)*32); + memset(clipping, 0x00, SAA7146_CLIPPING_MEM); + + /* fill the line and pixel-lists */ + for(i = 0; i < clipcount; i++) { + int l = 0, r = 0, t = 0, b = 0; + + x[i] = vv->ov.clips[i].c.left; + y[i] = vv->ov.clips[i].c.top; + w[i] = vv->ov.clips[i].c.width; + h[i] = vv->ov.clips[i].c.height; + + if( w[i] < 0) { + x[i] += w[i]; w[i] = -w[i]; + } + if( h[i] < 0) { + y[i] += h[i]; h[i] = -h[i]; + } + if( x[i] < 0) { + w[i] += x[i]; x[i] = 0; + } + if( y[i] < 0) { + h[i] += y[i]; y[i] = 0; + } + if( 0 != vv->vflip ) { + y[i] = height - y[i] - h[i]; + } + + l = x[i]; + r = x[i]+w[i]; + t = y[i]; + b = y[i]+h[i]; + + /* insert left/right coordinates */ + pixel_list[ 2*i ] = min_t(int, l, width); + pixel_list[(2*i)+1] = min_t(int, r, width); + /* insert top/bottom coordinates */ + line_list[ 2*i ] = min_t(int, t, height); + line_list[(2*i)+1] = min_t(int, b, height); + } + + /* sort and eliminate lists */ + cnt_line = cnt_pixel = 2*clipcount; + sort_and_eliminate( &pixel_list[0], &cnt_pixel ); + sort_and_eliminate( &line_list[0], &cnt_line ); + + /* calculate the number of used u32s */ + numdwords = max_t(int, (cnt_line+1), (cnt_pixel+1))*2; + numdwords = max_t(int, 4, numdwords); + numdwords = min_t(int, 64, numdwords); + + /* fill up cliptable */ + for(i = 0; i < cnt_pixel; i++) { + clipping[2*i] |= cpu_to_le32(pixel_list[i] << 16); + } + for(i = 0; i < cnt_line; i++) { + clipping[(2*i)+1] |= cpu_to_le32(line_list[i] << 16); + } + + /* fill up cliptable with the display infos */ + for(j = 0; j < clipcount; j++) { + + for(i = 0; i < cnt_pixel; i++) { + + if( x[j] < 0) + x[j] = 0; + + if( pixel_list[i] < (x[j] + w[j])) { + + if ( pixel_list[i] >= x[j] ) { + clipping[2*i] |= cpu_to_le32(1 << j); + } + } + } + for(i = 0; i < cnt_line; i++) { + + if( y[j] < 0) + y[j] = 0; + + if( line_list[i] < (y[j] + h[j]) ) { + + if( line_list[i] >= y[j] ) { + clipping[(2*i)+1] |= cpu_to_le32(1 << j); + } + } + } + } + + /* adjust arbitration control register */ + *arbtr_ctrl &= 0xffff00ff; + *arbtr_ctrl |= 0x00001c00; + + vdma2->base_even = vv->d_clipping.dma_handle; + vdma2->base_odd = vv->d_clipping.dma_handle; + vdma2->prot_addr = vv->d_clipping.dma_handle+((sizeof(u32))*(numdwords)); + vdma2->base_page = 0x04; + vdma2->pitch = 0x00; + vdma2->num_line_byte = (0 << 16 | (sizeof(u32))*(numdwords-1) ); + + /* set clipping-mode. this depends on the field(s) used */ + *clip_format &= 0xfffffff7; + if (V4L2_FIELD_HAS_BOTH(field)) { + *clip_format |= 0x00000008; + } else { + *clip_format |= 0x00000000; + } +} + +/* disable clipping */ +static void saa7146_disable_clipping(struct saa7146_dev *dev) +{ + u32 clip_format = saa7146_read(dev, CLIP_FORMAT_CTRL); + + /* mask out relevant bits (=lower word)*/ + clip_format &= MASK_W1; + + /* upload clipping-registers*/ + saa7146_write(dev, CLIP_FORMAT_CTRL,clip_format); + saa7146_write(dev, MC2, (MASK_05 | MASK_21)); + + /* disable video dma2 */ + saa7146_write(dev, MC1, MASK_21); +} + +static void saa7146_set_clipping_rect(struct saa7146_fh *fh) +{ + struct saa7146_dev *dev = fh->dev; + struct saa7146_vv *vv = dev->vv_data; + enum v4l2_field field = vv->ov.win.field; + struct saa7146_video_dma vdma2; + u32 clip_format; + u32 arbtr_ctrl; + + /* check clipcount, disable clipping if clipcount == 0*/ + if (vv->ov.nclips == 0) { + saa7146_disable_clipping(dev); + return; + } + + clip_format = saa7146_read(dev, CLIP_FORMAT_CTRL); + arbtr_ctrl = saa7146_read(dev, PCI_BT_V1); + + calculate_clipping_registers_rect(dev, fh, &vdma2, &clip_format, &arbtr_ctrl, field); + + /* set clipping format */ + clip_format &= 0xffff0008; + clip_format |= (SAA7146_CLIPPING_RECT << 4); + + /* prepare video dma2 */ + saa7146_write(dev, BASE_EVEN2, vdma2.base_even); + saa7146_write(dev, BASE_ODD2, vdma2.base_odd); + saa7146_write(dev, PROT_ADDR2, vdma2.prot_addr); + saa7146_write(dev, BASE_PAGE2, vdma2.base_page); + saa7146_write(dev, PITCH2, vdma2.pitch); + saa7146_write(dev, NUM_LINE_BYTE2, vdma2.num_line_byte); + + /* prepare the rest */ + saa7146_write(dev, CLIP_FORMAT_CTRL,clip_format); + saa7146_write(dev, PCI_BT_V1, arbtr_ctrl); + + /* upload clip_control-register, clipping-registers, enable video dma2 */ + saa7146_write(dev, MC2, (MASK_05 | MASK_21 | MASK_03 | MASK_19)); + saa7146_write(dev, MC1, (MASK_05 | MASK_21)); +} + +static void saa7146_set_window(struct saa7146_dev *dev, int width, int height, enum v4l2_field field) +{ + struct saa7146_vv *vv = dev->vv_data; + + int source = vv->current_hps_source; + int sync = vv->current_hps_sync; + + u32 hps_v_scale = 0, hps_v_gain = 0, hps_ctrl = 0, hps_h_prescale = 0, hps_h_scale = 0; + + /* set vertical scale */ + hps_v_scale = 0; /* all bits get set by the function-call */ + hps_v_gain = 0; /* fixme: saa7146_read(dev, HPS_V_GAIN);*/ + calculate_v_scale_registers(dev, field, vv->standard->v_field*2, height, &hps_v_scale, &hps_v_gain); + + /* set horizontal scale */ + hps_ctrl = 0; + hps_h_prescale = 0; /* all bits get set in the function */ + hps_h_scale = 0; + calculate_h_scale_registers(dev, vv->standard->h_pixels, width, vv->hflip, &hps_ctrl, &hps_v_gain, &hps_h_prescale, &hps_h_scale); + + /* set hyo and hxo */ + calculate_hxo_and_hyo(vv, &hps_h_scale, &hps_ctrl); + calculate_hps_source_and_sync(dev, source, sync, &hps_ctrl); + + /* write out new register contents */ + saa7146_write(dev, HPS_V_SCALE, hps_v_scale); + saa7146_write(dev, HPS_V_GAIN, hps_v_gain); + saa7146_write(dev, HPS_CTRL, hps_ctrl); + saa7146_write(dev, HPS_H_PRESCALE,hps_h_prescale); + saa7146_write(dev, HPS_H_SCALE, hps_h_scale); + + /* upload shadow-ram registers */ + saa7146_write(dev, MC2, (MASK_05 | MASK_06 | MASK_21 | MASK_22) ); +} + +/* calculate the new memory offsets for a desired position */ +static void saa7146_set_position(struct saa7146_dev *dev, int w_x, int w_y, int w_height, enum v4l2_field field, u32 pixelformat) +{ + struct saa7146_vv *vv = dev->vv_data; + struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev, pixelformat); + + int b_depth = vv->ov_fmt->depth; + int b_bpl = vv->ov_fb.fmt.bytesperline; + /* The unsigned long cast is to remove a 64-bit compile warning since + it looks like a 64-bit address is cast to a 32-bit value, even + though the base pointer is really a 32-bit physical address that + goes into a 32-bit DMA register. + FIXME: might not work on some 64-bit platforms, but see the FIXME + in struct v4l2_framebuffer (videodev2.h) for that. + */ + u32 base = (u32)(unsigned long)vv->ov_fb.base; + + struct saa7146_video_dma vdma1; + + /* calculate memory offsets for picture, look if we shall top-down-flip */ + vdma1.pitch = 2*b_bpl; + if ( 0 == vv->vflip ) { + vdma1.base_even = base + (w_y * (vdma1.pitch/2)) + (w_x * (b_depth / 8)); + vdma1.base_odd = vdma1.base_even + (vdma1.pitch / 2); + vdma1.prot_addr = vdma1.base_even + (w_height * (vdma1.pitch / 2)); + } + else { + vdma1.base_even = base + ((w_y+w_height) * (vdma1.pitch/2)) + (w_x * (b_depth / 8)); + vdma1.base_odd = vdma1.base_even - (vdma1.pitch / 2); + vdma1.prot_addr = vdma1.base_odd - (w_height * (vdma1.pitch / 2)); + } + + if (V4L2_FIELD_HAS_BOTH(field)) { + } else if (field == V4L2_FIELD_ALTERNATE) { + /* fixme */ + vdma1.base_odd = vdma1.prot_addr; + vdma1.pitch /= 2; + } else if (field == V4L2_FIELD_TOP) { + vdma1.base_odd = vdma1.prot_addr; + vdma1.pitch /= 2; + } else if (field == V4L2_FIELD_BOTTOM) { + vdma1.base_odd = vdma1.base_even; + vdma1.base_even = vdma1.prot_addr; + vdma1.pitch /= 2; + } + + if ( 0 != vv->vflip ) { + vdma1.pitch *= -1; + } + + vdma1.base_page = sfmt->swap; + vdma1.num_line_byte = (vv->standard->v_field<<16)+vv->standard->h_pixels; + + saa7146_write_out_dma(dev, 1, &vdma1); +} + +static void saa7146_set_output_format(struct saa7146_dev *dev, unsigned long palette) +{ + u32 clip_format = saa7146_read(dev, CLIP_FORMAT_CTRL); + + /* call helper function */ + calculate_output_format_register(dev,palette,&clip_format); + + /* update the hps registers */ + saa7146_write(dev, CLIP_FORMAT_CTRL, clip_format); + saa7146_write(dev, MC2, (MASK_05 | MASK_21)); +} + +/* select input-source */ +void saa7146_set_hps_source_and_sync(struct saa7146_dev *dev, int source, int sync) +{ + struct saa7146_vv *vv = dev->vv_data; + u32 hps_ctrl = 0; + + /* read old state */ + hps_ctrl = saa7146_read(dev, HPS_CTRL); + + hps_ctrl &= ~( MASK_31 | MASK_30 | MASK_28 ); + hps_ctrl |= (source << 30) | (sync << 28); + + /* write back & upload register */ + saa7146_write(dev, HPS_CTRL, hps_ctrl); + saa7146_write(dev, MC2, (MASK_05 | MASK_21)); + + vv->current_hps_source = source; + vv->current_hps_sync = sync; +} +EXPORT_SYMBOL_GPL(saa7146_set_hps_source_and_sync); + +int saa7146_enable_overlay(struct saa7146_fh *fh) +{ + struct saa7146_dev *dev = fh->dev; + struct saa7146_vv *vv = dev->vv_data; + + saa7146_set_window(dev, vv->ov.win.w.width, vv->ov.win.w.height, vv->ov.win.field); + saa7146_set_position(dev, vv->ov.win.w.left, vv->ov.win.w.top, vv->ov.win.w.height, vv->ov.win.field, vv->ov_fmt->pixelformat); + saa7146_set_output_format(dev, vv->ov_fmt->trans); + saa7146_set_clipping_rect(fh); + + /* enable video dma1 */ + saa7146_write(dev, MC1, (MASK_06 | MASK_22)); + return 0; +} + +void saa7146_disable_overlay(struct saa7146_fh *fh) +{ + struct saa7146_dev *dev = fh->dev; + + /* disable clipping + video dma1 */ + saa7146_disable_clipping(dev); + saa7146_write(dev, MC1, MASK_22); +} + +void saa7146_write_out_dma(struct saa7146_dev* dev, int which, struct saa7146_video_dma* vdma) +{ + int where = 0; + + if( which < 1 || which > 3) { + return; + } + + /* calculate starting address */ + where = (which-1)*0x18; + + saa7146_write(dev, where, vdma->base_odd); + saa7146_write(dev, where+0x04, vdma->base_even); + saa7146_write(dev, where+0x08, vdma->prot_addr); + saa7146_write(dev, where+0x0c, vdma->pitch); + saa7146_write(dev, where+0x10, vdma->base_page); + saa7146_write(dev, where+0x14, vdma->num_line_byte); + + /* upload */ + saa7146_write(dev, MC2, (MASK_02<<(which-1))|(MASK_18<<(which-1))); +/* + printk("vdma%d.base_even: 0x%08x\n", which,vdma->base_even); + printk("vdma%d.base_odd: 0x%08x\n", which,vdma->base_odd); + printk("vdma%d.prot_addr: 0x%08x\n", which,vdma->prot_addr); + printk("vdma%d.base_page: 0x%08x\n", which,vdma->base_page); + printk("vdma%d.pitch: 0x%08x\n", which,vdma->pitch); + printk("vdma%d.num_line_byte: 0x%08x\n", which,vdma->num_line_byte); +*/ +} + +static int calculate_video_dma_grab_packed(struct saa7146_dev* dev, struct saa7146_buf *buf) +{ + struct saa7146_vv *vv = dev->vv_data; + struct saa7146_video_dma vdma1; + + struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat); + + int width = buf->fmt->width; + int height = buf->fmt->height; + int bytesperline = buf->fmt->bytesperline; + enum v4l2_field field = buf->fmt->field; + + int depth = sfmt->depth; + + DEB_CAP("[size=%dx%d,fields=%s]\n", + width, height, v4l2_field_names[field]); + + if( bytesperline != 0) { + vdma1.pitch = bytesperline*2; + } else { + vdma1.pitch = (width*depth*2)/8; + } + vdma1.num_line_byte = ((vv->standard->v_field<<16) + vv->standard->h_pixels); + vdma1.base_page = buf->pt[0].dma | ME1 | sfmt->swap; + + if( 0 != vv->vflip ) { + vdma1.prot_addr = buf->pt[0].offset; + vdma1.base_even = buf->pt[0].offset+(vdma1.pitch/2)*height; + vdma1.base_odd = vdma1.base_even - (vdma1.pitch/2); + } else { + vdma1.base_even = buf->pt[0].offset; + vdma1.base_odd = vdma1.base_even + (vdma1.pitch/2); + vdma1.prot_addr = buf->pt[0].offset+(vdma1.pitch/2)*height; + } + + if (V4L2_FIELD_HAS_BOTH(field)) { + } else if (field == V4L2_FIELD_ALTERNATE) { + /* fixme */ + if ( vv->last_field == V4L2_FIELD_TOP ) { + vdma1.base_odd = vdma1.prot_addr; + vdma1.pitch /= 2; + } else if ( vv->last_field == V4L2_FIELD_BOTTOM ) { + vdma1.base_odd = vdma1.base_even; + vdma1.base_even = vdma1.prot_addr; + vdma1.pitch /= 2; + } + } else if (field == V4L2_FIELD_TOP) { + vdma1.base_odd = vdma1.prot_addr; + vdma1.pitch /= 2; + } else if (field == V4L2_FIELD_BOTTOM) { + vdma1.base_odd = vdma1.base_even; + vdma1.base_even = vdma1.prot_addr; + vdma1.pitch /= 2; + } + + if( 0 != vv->vflip ) { + vdma1.pitch *= -1; + } + + saa7146_write_out_dma(dev, 1, &vdma1); + return 0; +} + +static int calc_planar_422(struct saa7146_vv *vv, struct saa7146_buf *buf, struct saa7146_video_dma *vdma2, struct saa7146_video_dma *vdma3) +{ + int height = buf->fmt->height; + int width = buf->fmt->width; + + vdma2->pitch = width; + vdma3->pitch = width; + + /* fixme: look at bytesperline! */ + + if( 0 != vv->vflip ) { + vdma2->prot_addr = buf->pt[1].offset; + vdma2->base_even = ((vdma2->pitch/2)*height)+buf->pt[1].offset; + vdma2->base_odd = vdma2->base_even - (vdma2->pitch/2); + + vdma3->prot_addr = buf->pt[2].offset; + vdma3->base_even = ((vdma3->pitch/2)*height)+buf->pt[2].offset; + vdma3->base_odd = vdma3->base_even - (vdma3->pitch/2); + } else { + vdma3->base_even = buf->pt[2].offset; + vdma3->base_odd = vdma3->base_even + (vdma3->pitch/2); + vdma3->prot_addr = (vdma3->pitch/2)*height+buf->pt[2].offset; + + vdma2->base_even = buf->pt[1].offset; + vdma2->base_odd = vdma2->base_even + (vdma2->pitch/2); + vdma2->prot_addr = (vdma2->pitch/2)*height+buf->pt[1].offset; + } + + return 0; +} + +static int calc_planar_420(struct saa7146_vv *vv, struct saa7146_buf *buf, struct saa7146_video_dma *vdma2, struct saa7146_video_dma *vdma3) +{ + int height = buf->fmt->height; + int width = buf->fmt->width; + + vdma2->pitch = width/2; + vdma3->pitch = width/2; + + if( 0 != vv->vflip ) { + vdma2->prot_addr = buf->pt[2].offset; + vdma2->base_even = ((vdma2->pitch/2)*height)+buf->pt[2].offset; + vdma2->base_odd = vdma2->base_even - (vdma2->pitch/2); + + vdma3->prot_addr = buf->pt[1].offset; + vdma3->base_even = ((vdma3->pitch/2)*height)+buf->pt[1].offset; + vdma3->base_odd = vdma3->base_even - (vdma3->pitch/2); + + } else { + vdma3->base_even = buf->pt[2].offset; + vdma3->base_odd = vdma3->base_even + (vdma3->pitch); + vdma3->prot_addr = (vdma3->pitch/2)*height+buf->pt[2].offset; + + vdma2->base_even = buf->pt[1].offset; + vdma2->base_odd = vdma2->base_even + (vdma2->pitch); + vdma2->prot_addr = (vdma2->pitch/2)*height+buf->pt[1].offset; + } + return 0; +} + +static int calculate_video_dma_grab_planar(struct saa7146_dev* dev, struct saa7146_buf *buf) +{ + struct saa7146_vv *vv = dev->vv_data; + struct saa7146_video_dma vdma1; + struct saa7146_video_dma vdma2; + struct saa7146_video_dma vdma3; + + struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat); + + int width = buf->fmt->width; + int height = buf->fmt->height; + enum v4l2_field field = buf->fmt->field; + + BUG_ON(0 == buf->pt[0].dma); + BUG_ON(0 == buf->pt[1].dma); + BUG_ON(0 == buf->pt[2].dma); + + DEB_CAP("[size=%dx%d,fields=%s]\n", + width, height, v4l2_field_names[field]); + + /* fixme: look at bytesperline! */ + + /* fixme: what happens for user space buffers here?. The offsets are + most likely wrong, this version here only works for page-aligned + buffers, modifications to the pagetable-functions are necessary...*/ + + vdma1.pitch = width*2; + vdma1.num_line_byte = ((vv->standard->v_field<<16) + vv->standard->h_pixels); + vdma1.base_page = buf->pt[0].dma | ME1; + + if( 0 != vv->vflip ) { + vdma1.prot_addr = buf->pt[0].offset; + vdma1.base_even = ((vdma1.pitch/2)*height)+buf->pt[0].offset; + vdma1.base_odd = vdma1.base_even - (vdma1.pitch/2); + } else { + vdma1.base_even = buf->pt[0].offset; + vdma1.base_odd = vdma1.base_even + (vdma1.pitch/2); + vdma1.prot_addr = (vdma1.pitch/2)*height+buf->pt[0].offset; + } + + vdma2.num_line_byte = 0; /* unused */ + vdma2.base_page = buf->pt[1].dma | ME1; + + vdma3.num_line_byte = 0; /* unused */ + vdma3.base_page = buf->pt[2].dma | ME1; + + switch( sfmt->depth ) { + case 12: { + calc_planar_420(vv,buf,&vdma2,&vdma3); + break; + } + case 16: { + calc_planar_422(vv,buf,&vdma2,&vdma3); + break; + } + default: { + return -1; + } + } + + if (V4L2_FIELD_HAS_BOTH(field)) { + } else if (field == V4L2_FIELD_ALTERNATE) { + /* fixme */ + vdma1.base_odd = vdma1.prot_addr; + vdma1.pitch /= 2; + vdma2.base_odd = vdma2.prot_addr; + vdma2.pitch /= 2; + vdma3.base_odd = vdma3.prot_addr; + vdma3.pitch /= 2; + } else if (field == V4L2_FIELD_TOP) { + vdma1.base_odd = vdma1.prot_addr; + vdma1.pitch /= 2; + vdma2.base_odd = vdma2.prot_addr; + vdma2.pitch /= 2; + vdma3.base_odd = vdma3.prot_addr; + vdma3.pitch /= 2; + } else if (field == V4L2_FIELD_BOTTOM) { + vdma1.base_odd = vdma1.base_even; + vdma1.base_even = vdma1.prot_addr; + vdma1.pitch /= 2; + vdma2.base_odd = vdma2.base_even; + vdma2.base_even = vdma2.prot_addr; + vdma2.pitch /= 2; + vdma3.base_odd = vdma3.base_even; + vdma3.base_even = vdma3.prot_addr; + vdma3.pitch /= 2; + } + + if( 0 != vv->vflip ) { + vdma1.pitch *= -1; + vdma2.pitch *= -1; + vdma3.pitch *= -1; + } + + saa7146_write_out_dma(dev, 1, &vdma1); + if( (sfmt->flags & FORMAT_BYTE_SWAP) != 0 ) { + saa7146_write_out_dma(dev, 3, &vdma2); + saa7146_write_out_dma(dev, 2, &vdma3); + } else { + saa7146_write_out_dma(dev, 2, &vdma2); + saa7146_write_out_dma(dev, 3, &vdma3); + } + return 0; +} + +static void program_capture_engine(struct saa7146_dev *dev, int planar) +{ + struct saa7146_vv *vv = dev->vv_data; + int count = 0; + + unsigned long e_wait = vv->current_hps_sync == SAA7146_HPS_SYNC_PORT_A ? CMD_E_FID_A : CMD_E_FID_B; + unsigned long o_wait = vv->current_hps_sync == SAA7146_HPS_SYNC_PORT_A ? CMD_O_FID_A : CMD_O_FID_B; + + /* wait for o_fid_a/b / e_fid_a/b toggle only if rps register 0 is not set*/ + WRITE_RPS0(CMD_PAUSE | CMD_OAN | CMD_SIG0 | o_wait); + WRITE_RPS0(CMD_PAUSE | CMD_OAN | CMD_SIG0 | e_wait); + + /* set rps register 0 */ + WRITE_RPS0(CMD_WR_REG | (1 << 8) | (MC2/4)); + WRITE_RPS0(MASK_27 | MASK_11); + + /* turn on video-dma1 */ + WRITE_RPS0(CMD_WR_REG_MASK | (MC1/4)); + WRITE_RPS0(MASK_06 | MASK_22); /* => mask */ + WRITE_RPS0(MASK_06 | MASK_22); /* => values */ + if( 0 != planar ) { + /* turn on video-dma2 */ + WRITE_RPS0(CMD_WR_REG_MASK | (MC1/4)); + WRITE_RPS0(MASK_05 | MASK_21); /* => mask */ + WRITE_RPS0(MASK_05 | MASK_21); /* => values */ + + /* turn on video-dma3 */ + WRITE_RPS0(CMD_WR_REG_MASK | (MC1/4)); + WRITE_RPS0(MASK_04 | MASK_20); /* => mask */ + WRITE_RPS0(MASK_04 | MASK_20); /* => values */ + } + + /* wait for o_fid_a/b / e_fid_a/b toggle */ + if ( vv->last_field == V4L2_FIELD_INTERLACED ) { + WRITE_RPS0(CMD_PAUSE | o_wait); + WRITE_RPS0(CMD_PAUSE | e_wait); + } else if ( vv->last_field == V4L2_FIELD_TOP ) { + WRITE_RPS0(CMD_PAUSE | (vv->current_hps_sync == SAA7146_HPS_SYNC_PORT_A ? MASK_10 : MASK_09)); + WRITE_RPS0(CMD_PAUSE | o_wait); + } else if ( vv->last_field == V4L2_FIELD_BOTTOM ) { + WRITE_RPS0(CMD_PAUSE | (vv->current_hps_sync == SAA7146_HPS_SYNC_PORT_A ? MASK_10 : MASK_09)); + WRITE_RPS0(CMD_PAUSE | e_wait); + } + + /* turn off video-dma1 */ + WRITE_RPS0(CMD_WR_REG_MASK | (MC1/4)); + WRITE_RPS0(MASK_22 | MASK_06); /* => mask */ + WRITE_RPS0(MASK_22); /* => values */ + if( 0 != planar ) { + /* turn off video-dma2 */ + WRITE_RPS0(CMD_WR_REG_MASK | (MC1/4)); + WRITE_RPS0(MASK_05 | MASK_21); /* => mask */ + WRITE_RPS0(MASK_21); /* => values */ + + /* turn off video-dma3 */ + WRITE_RPS0(CMD_WR_REG_MASK | (MC1/4)); + WRITE_RPS0(MASK_04 | MASK_20); /* => mask */ + WRITE_RPS0(MASK_20); /* => values */ + } + + /* generate interrupt */ + WRITE_RPS0(CMD_INTERRUPT); + + /* stop */ + WRITE_RPS0(CMD_STOP); +} + +void saa7146_set_capture(struct saa7146_dev *dev, struct saa7146_buf *buf, struct saa7146_buf *next) +{ + struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat); + struct saa7146_vv *vv = dev->vv_data; + u32 vdma1_prot_addr; + + DEB_CAP("buf:%p, next:%p\n", buf, next); + + vdma1_prot_addr = saa7146_read(dev, PROT_ADDR1); + if( 0 == vdma1_prot_addr ) { + /* clear out beginning of streaming bit (rps register 0)*/ + DEB_CAP("forcing sync to new frame\n"); + saa7146_write(dev, MC2, MASK_27 ); + } + + saa7146_set_window(dev, buf->fmt->width, buf->fmt->height, buf->fmt->field); + saa7146_set_output_format(dev, sfmt->trans); + saa7146_disable_clipping(dev); + + if ( vv->last_field == V4L2_FIELD_INTERLACED ) { + } else if ( vv->last_field == V4L2_FIELD_TOP ) { + vv->last_field = V4L2_FIELD_BOTTOM; + } else if ( vv->last_field == V4L2_FIELD_BOTTOM ) { + vv->last_field = V4L2_FIELD_TOP; + } + + if( 0 != IS_PLANAR(sfmt->trans)) { + calculate_video_dma_grab_planar(dev, buf); + program_capture_engine(dev,1); + } else { + calculate_video_dma_grab_packed(dev, buf); + program_capture_engine(dev,0); + } + +/* + printk("vdma%d.base_even: 0x%08x\n", 1,saa7146_read(dev,BASE_EVEN1)); + printk("vdma%d.base_odd: 0x%08x\n", 1,saa7146_read(dev,BASE_ODD1)); + printk("vdma%d.prot_addr: 0x%08x\n", 1,saa7146_read(dev,PROT_ADDR1)); + printk("vdma%d.base_page: 0x%08x\n", 1,saa7146_read(dev,BASE_PAGE1)); + printk("vdma%d.pitch: 0x%08x\n", 1,saa7146_read(dev,PITCH1)); + printk("vdma%d.num_line_byte: 0x%08x\n", 1,saa7146_read(dev,NUM_LINE_BYTE1)); + printk("vdma%d => vptr : 0x%08x\n", 1,saa7146_read(dev,PCI_VDP1)); +*/ + + /* write the address of the rps-program */ + saa7146_write(dev, RPS_ADDR0, dev->d_rps0.dma_handle); + + /* turn on rps */ + saa7146_write(dev, MC1, (MASK_12 | MASK_28)); +} diff --git a/drivers/media/common/saa7146/saa7146_i2c.c b/drivers/media/common/saa7146/saa7146_i2c.c new file mode 100644 index 0000000..2202719 --- /dev/null +++ b/drivers/media/common/saa7146/saa7146_i2c.c @@ -0,0 +1,423 @@ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <media/saa7146_vv.h> + +static u32 saa7146_i2c_func(struct i2c_adapter *adapter) +{ + /* DEB_I2C("'%s'\n", adapter->name); */ + + return I2C_FUNC_I2C + | I2C_FUNC_SMBUS_QUICK + | I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE + | I2C_FUNC_SMBUS_READ_BYTE_DATA | I2C_FUNC_SMBUS_WRITE_BYTE_DATA; +} + +/* this function returns the status-register of our i2c-device */ +static inline u32 saa7146_i2c_status(struct saa7146_dev *dev) +{ + u32 iicsta = saa7146_read(dev, I2C_STATUS); + /* DEB_I2C("status: 0x%08x\n", iicsta); */ + return iicsta; +} + +/* this function runs through the i2c-messages and prepares the data to be + sent through the saa7146. have a look at the specifications p. 122 ff + to understand this. it returns the number of u32s to send, or -1 + in case of an error. */ +static int saa7146_i2c_msg_prepare(const struct i2c_msg *m, int num, __le32 *op) +{ + int h1, h2; + int i, j, addr; + int mem = 0, op_count = 0; + + /* first determine size of needed memory */ + for(i = 0; i < num; i++) { + mem += m[i].len + 1; + } + + /* worst case: we need one u32 for three bytes to be send + plus one extra byte to address the device */ + mem = 1 + ((mem-1) / 3); + + /* we assume that op points to a memory of at least + * SAA7146_I2C_MEM bytes size. if we exceed this limit... + */ + if ((4 * mem) > SAA7146_I2C_MEM) { + /* DEB_I2C("cannot prepare i2c-message\n"); */ + return -ENOMEM; + } + + /* be careful: clear out the i2c-mem first */ + memset(op,0,sizeof(__le32)*mem); + + /* loop through all messages */ + for(i = 0; i < num; i++) { + + /* insert the address of the i2c-slave. + note: we get 7 bit i2c-addresses, + so we have to perform a translation */ + addr = (m[i].addr*2) + ( (0 != (m[i].flags & I2C_M_RD)) ? 1 : 0); + h1 = op_count/3; h2 = op_count%3; + op[h1] |= cpu_to_le32( (u8)addr << ((3-h2)*8)); + op[h1] |= cpu_to_le32(SAA7146_I2C_START << ((3-h2)*2)); + op_count++; + + /* loop through all bytes of message i */ + for(j = 0; j < m[i].len; j++) { + /* insert the data bytes */ + h1 = op_count/3; h2 = op_count%3; + op[h1] |= cpu_to_le32( (u32)((u8)m[i].buf[j]) << ((3-h2)*8)); + op[h1] |= cpu_to_le32( SAA7146_I2C_CONT << ((3-h2)*2)); + op_count++; + } + + } + + /* have a look at the last byte inserted: + if it was: ...CONT change it to ...STOP */ + h1 = (op_count-1)/3; h2 = (op_count-1)%3; + if ( SAA7146_I2C_CONT == (0x3 & (le32_to_cpu(op[h1]) >> ((3-h2)*2))) ) { + op[h1] &= ~cpu_to_le32(0x2 << ((3-h2)*2)); + op[h1] |= cpu_to_le32(SAA7146_I2C_STOP << ((3-h2)*2)); + } + + /* return the number of u32s to send */ + return mem; +} + +/* this functions loops through all i2c-messages. normally, it should determine + which bytes were read through the adapter and write them back to the corresponding + i2c-message. but instead, we simply write back all bytes. + fixme: this could be improved. */ +static int saa7146_i2c_msg_cleanup(const struct i2c_msg *m, int num, __le32 *op) +{ + int i, j; + int op_count = 0; + + /* loop through all messages */ + for(i = 0; i < num; i++) { + + op_count++; + + /* loop through all bytes of message i */ + for(j = 0; j < m[i].len; j++) { + /* write back all bytes that could have been read */ + m[i].buf[j] = (le32_to_cpu(op[op_count/3]) >> ((3-(op_count%3))*8)); + op_count++; + } + } + + return 0; +} + +/* this functions resets the i2c-device and returns 0 if everything was fine, otherwise -1 */ +static int saa7146_i2c_reset(struct saa7146_dev *dev) +{ + /* get current status */ + u32 status = saa7146_i2c_status(dev); + + /* clear registers for sure */ + saa7146_write(dev, I2C_STATUS, dev->i2c_bitrate); + saa7146_write(dev, I2C_TRANSFER, 0); + + /* check if any operation is still in progress */ + if ( 0 != ( status & SAA7146_I2C_BUSY) ) { + + /* yes, kill ongoing operation */ + DEB_I2C("busy_state detected\n"); + + /* set "ABORT-OPERATION"-bit (bit 7)*/ + saa7146_write(dev, I2C_STATUS, (dev->i2c_bitrate | MASK_07)); + saa7146_write(dev, MC2, (MASK_00 | MASK_16)); + msleep(SAA7146_I2C_DELAY); + + /* clear all error-bits pending; this is needed because p.123, note 1 */ + saa7146_write(dev, I2C_STATUS, dev->i2c_bitrate); + saa7146_write(dev, MC2, (MASK_00 | MASK_16)); + msleep(SAA7146_I2C_DELAY); + } + + /* check if any error is (still) present. (this can be necessary because p.123, note 1) */ + status = saa7146_i2c_status(dev); + + if ( dev->i2c_bitrate != status ) { + + DEB_I2C("error_state detected. status:0x%08x\n", status); + + /* Repeat the abort operation. This seems to be necessary + after serious protocol errors caused by e.g. the SAA7740 */ + saa7146_write(dev, I2C_STATUS, (dev->i2c_bitrate | MASK_07)); + saa7146_write(dev, MC2, (MASK_00 | MASK_16)); + msleep(SAA7146_I2C_DELAY); + + /* clear all error-bits pending */ + saa7146_write(dev, I2C_STATUS, dev->i2c_bitrate); + saa7146_write(dev, MC2, (MASK_00 | MASK_16)); + msleep(SAA7146_I2C_DELAY); + + /* the data sheet says it might be necessary to clear the status + twice after an abort */ + saa7146_write(dev, I2C_STATUS, dev->i2c_bitrate); + saa7146_write(dev, MC2, (MASK_00 | MASK_16)); + msleep(SAA7146_I2C_DELAY); + } + + /* if any error is still present, a fatal error has occurred ... */ + status = saa7146_i2c_status(dev); + if ( dev->i2c_bitrate != status ) { + DEB_I2C("fatal error. status:0x%08x\n", status); + return -1; + } + + return 0; +} + +/* this functions writes out the data-byte 'dword' to the i2c-device. + it returns 0 if ok, -1 if the transfer failed, -2 if the transfer + failed badly (e.g. address error) */ +static int saa7146_i2c_writeout(struct saa7146_dev *dev, __le32 *dword, int short_delay) +{ + u32 status = 0, mc2 = 0; + int trial = 0; + unsigned long timeout; + + /* write out i2c-command */ + DEB_I2C("before: 0x%08x (status: 0x%08x), %d\n", + *dword, saa7146_read(dev, I2C_STATUS), dev->i2c_op); + + if( 0 != (SAA7146_USE_I2C_IRQ & dev->ext->flags)) { + + saa7146_write(dev, I2C_STATUS, dev->i2c_bitrate); + saa7146_write(dev, I2C_TRANSFER, le32_to_cpu(*dword)); + + dev->i2c_op = 1; + SAA7146_ISR_CLEAR(dev, MASK_16|MASK_17); + SAA7146_IER_ENABLE(dev, MASK_16|MASK_17); + saa7146_write(dev, MC2, (MASK_00 | MASK_16)); + + timeout = HZ/100 + 1; /* 10ms */ + timeout = wait_event_interruptible_timeout(dev->i2c_wq, dev->i2c_op == 0, timeout); + if (timeout == -ERESTARTSYS || dev->i2c_op) { + SAA7146_IER_DISABLE(dev, MASK_16|MASK_17); + SAA7146_ISR_CLEAR(dev, MASK_16|MASK_17); + if (timeout == -ERESTARTSYS) + /* a signal arrived */ + return -ERESTARTSYS; + + pr_warn("%s %s [irq]: timed out waiting for end of xfer\n", + dev->name, __func__); + return -EIO; + } + status = saa7146_read(dev, I2C_STATUS); + } else { + saa7146_write(dev, I2C_STATUS, dev->i2c_bitrate); + saa7146_write(dev, I2C_TRANSFER, le32_to_cpu(*dword)); + saa7146_write(dev, MC2, (MASK_00 | MASK_16)); + + /* do not poll for i2c-status before upload is complete */ + timeout = jiffies + HZ/100 + 1; /* 10ms */ + while(1) { + mc2 = (saa7146_read(dev, MC2) & 0x1); + if( 0 != mc2 ) { + break; + } + if (time_after(jiffies,timeout)) { + pr_warn("%s %s: timed out waiting for MC2\n", + dev->name, __func__); + return -EIO; + } + } + /* wait until we get a transfer done or error */ + timeout = jiffies + HZ/100 + 1; /* 10ms */ + /* first read usually delivers bogus results... */ + saa7146_i2c_status(dev); + while(1) { + status = saa7146_i2c_status(dev); + if ((status & 0x3) != 1) + break; + if (time_after(jiffies,timeout)) { + /* this is normal when probing the bus + * (no answer from nonexisistant device...) + */ + pr_warn("%s %s [poll]: timed out waiting for end of xfer\n", + dev->name, __func__); + return -EIO; + } + if (++trial < 50 && short_delay) + udelay(10); + else + msleep(1); + } + } + + /* give a detailed status report */ + if ( 0 != (status & (SAA7146_I2C_SPERR | SAA7146_I2C_APERR | + SAA7146_I2C_DTERR | SAA7146_I2C_DRERR | + SAA7146_I2C_AL | SAA7146_I2C_ERR | + SAA7146_I2C_BUSY)) ) { + + if ( 0 == (status & SAA7146_I2C_ERR) || + 0 == (status & SAA7146_I2C_BUSY) ) { + /* it may take some time until ERR goes high - ignore */ + DEB_I2C("unexpected i2c status %04x\n", status); + } + if( 0 != (status & SAA7146_I2C_SPERR) ) { + DEB_I2C("error due to invalid start/stop condition\n"); + } + if( 0 != (status & SAA7146_I2C_DTERR) ) { + DEB_I2C("error in data transmission\n"); + } + if( 0 != (status & SAA7146_I2C_DRERR) ) { + DEB_I2C("error when receiving data\n"); + } + if( 0 != (status & SAA7146_I2C_AL) ) { + DEB_I2C("error because arbitration lost\n"); + } + + /* we handle address-errors here */ + if( 0 != (status & SAA7146_I2C_APERR) ) { + DEB_I2C("error in address phase\n"); + return -EREMOTEIO; + } + + return -EIO; + } + + /* read back data, just in case we were reading ... */ + *dword = cpu_to_le32(saa7146_read(dev, I2C_TRANSFER)); + + DEB_I2C("after: 0x%08x\n", *dword); + return 0; +} + +static int saa7146_i2c_transfer(struct saa7146_dev *dev, const struct i2c_msg *msgs, int num, int retries) +{ + int i = 0, count = 0; + __le32 *buffer = dev->d_i2c.cpu_addr; + int err = 0; + int short_delay = 0; + + if (mutex_lock_interruptible(&dev->i2c_lock)) + return -ERESTARTSYS; + + for(i=0;i<num;i++) { + DEB_I2C("msg:%d/%d\n", i+1, num); + } + + /* prepare the message(s), get number of u32s to transfer */ + count = saa7146_i2c_msg_prepare(msgs, num, buffer); + if ( 0 > count ) { + err = -1; + goto out; + } + + if ( count > 3 || 0 != (SAA7146_I2C_SHORT_DELAY & dev->ext->flags) ) + short_delay = 1; + + do { + /* reset the i2c-device if necessary */ + err = saa7146_i2c_reset(dev); + if ( 0 > err ) { + DEB_I2C("could not reset i2c-device\n"); + goto out; + } + + /* write out the u32s one after another */ + for(i = 0; i < count; i++) { + err = saa7146_i2c_writeout(dev, &buffer[i], short_delay); + if ( 0 != err) { + /* this one is unsatisfying: some i2c slaves on some + dvb cards don't acknowledge correctly, so the saa7146 + thinks that an address error occurred. in that case, the + transaction should be retrying, even if an address error + occurred. analog saa7146 based cards extensively rely on + i2c address probing, however, and address errors indicate that a + device is really *not* there. retrying in that case + increases the time the device needs to probe greatly, so + it should be avoided. So we bail out in irq mode after an + address error and trust the saa7146 address error detection. */ + if (-EREMOTEIO == err && 0 != (SAA7146_USE_I2C_IRQ & dev->ext->flags)) + goto out; + DEB_I2C("error while sending message(s). starting again\n"); + break; + } + } + if( 0 == err ) { + err = num; + break; + } + + /* delay a bit before retrying */ + msleep(10); + + } while (err != num && retries--); + + /* quit if any error occurred */ + if (err != num) + goto out; + + /* if any things had to be read, get the results */ + if ( 0 != saa7146_i2c_msg_cleanup(msgs, num, buffer)) { + DEB_I2C("could not cleanup i2c-message\n"); + err = -1; + goto out; + } + + /* return the number of delivered messages */ + DEB_I2C("transmission successful. (msg:%d)\n", err); +out: + /* another bug in revision 0: the i2c-registers get uploaded randomly by other + uploads, so we better clear them out before continuing */ + if( 0 == dev->revision ) { + __le32 zero = 0; + saa7146_i2c_reset(dev); + if( 0 != saa7146_i2c_writeout(dev, &zero, short_delay)) { + pr_info("revision 0 error. this should never happen\n"); + } + } + + mutex_unlock(&dev->i2c_lock); + return err; +} + +/* utility functions */ +static int saa7146_i2c_xfer(struct i2c_adapter* adapter, struct i2c_msg *msg, int num) +{ + struct v4l2_device *v4l2_dev = i2c_get_adapdata(adapter); + struct saa7146_dev *dev = to_saa7146_dev(v4l2_dev); + + /* use helper function to transfer data */ + return saa7146_i2c_transfer(dev, msg, num, adapter->retries); +} + + +/*****************************************************************************/ +/* i2c-adapter helper functions */ + +/* exported algorithm data */ +static struct i2c_algorithm saa7146_algo = { + .master_xfer = saa7146_i2c_xfer, + .functionality = saa7146_i2c_func, +}; + +int saa7146_i2c_adapter_prepare(struct saa7146_dev *dev, struct i2c_adapter *i2c_adapter, u32 bitrate) +{ + DEB_EE("bitrate: 0x%08x\n", bitrate); + + /* enable i2c-port pins */ + saa7146_write(dev, MC1, (MASK_08 | MASK_24)); + + dev->i2c_bitrate = bitrate; + saa7146_i2c_reset(dev); + + if (i2c_adapter) { + i2c_set_adapdata(i2c_adapter, &dev->v4l2_dev); + i2c_adapter->dev.parent = &dev->pci->dev; + i2c_adapter->algo = &saa7146_algo; + i2c_adapter->algo_data = NULL; + i2c_adapter->timeout = SAA7146_I2C_TIMEOUT; + i2c_adapter->retries = SAA7146_I2C_RETRIES; + } + + return 0; +} diff --git a/drivers/media/common/saa7146/saa7146_vbi.c b/drivers/media/common/saa7146/saa7146_vbi.c new file mode 100644 index 0000000..1e71e37 --- /dev/null +++ b/drivers/media/common/saa7146/saa7146_vbi.c @@ -0,0 +1,498 @@ +#include <media/saa7146_vv.h> + +static int vbi_pixel_to_capture = 720 * 2; + +static int vbi_workaround(struct saa7146_dev *dev) +{ + struct saa7146_vv *vv = dev->vv_data; + + u32 *cpu; + dma_addr_t dma_addr; + + int count = 0; + int i; + + DECLARE_WAITQUEUE(wait, current); + + DEB_VBI("dev:%p\n", dev); + + /* once again, a bug in the saa7146: the brs acquisition + is buggy and especially the BXO-counter does not work + as specified. there is this workaround, but please + don't let me explain it. ;-) */ + + cpu = pci_alloc_consistent(dev->pci, 4096, &dma_addr); + if (NULL == cpu) + return -ENOMEM; + + /* setup some basic programming, just for the workaround */ + saa7146_write(dev, BASE_EVEN3, dma_addr); + saa7146_write(dev, BASE_ODD3, dma_addr+vbi_pixel_to_capture); + saa7146_write(dev, PROT_ADDR3, dma_addr+4096); + saa7146_write(dev, PITCH3, vbi_pixel_to_capture); + saa7146_write(dev, BASE_PAGE3, 0x0); + saa7146_write(dev, NUM_LINE_BYTE3, (2<<16)|((vbi_pixel_to_capture)<<0)); + saa7146_write(dev, MC2, MASK_04|MASK_20); + + /* load brs-control register */ + WRITE_RPS1(CMD_WR_REG | (1 << 8) | (BRS_CTRL/4)); + /* BXO = 1h, BRS to outbound */ + WRITE_RPS1(0xc000008c); + /* wait for vbi_a or vbi_b*/ + if ( 0 != (SAA7146_USE_PORT_B_FOR_VBI & dev->ext_vv_data->flags)) { + DEB_D("...using port b\n"); + WRITE_RPS1(CMD_PAUSE | CMD_OAN | CMD_SIG1 | CMD_E_FID_B); + WRITE_RPS1(CMD_PAUSE | CMD_OAN | CMD_SIG1 | CMD_O_FID_B); +/* + WRITE_RPS1(CMD_PAUSE | MASK_09); +*/ + } else { + DEB_D("...using port a\n"); + WRITE_RPS1(CMD_PAUSE | MASK_10); + } + /* upload brs */ + WRITE_RPS1(CMD_UPLOAD | MASK_08); + /* load brs-control register */ + WRITE_RPS1(CMD_WR_REG | (1 << 8) | (BRS_CTRL/4)); + /* BYO = 1, BXO = NQBIL (=1728 for PAL, for NTSC this is 858*2) - NumByte3 (=1440) = 288 */ + WRITE_RPS1(((1728-(vbi_pixel_to_capture)) << 7) | MASK_19); + /* wait for brs_done */ + WRITE_RPS1(CMD_PAUSE | MASK_08); + /* upload brs */ + WRITE_RPS1(CMD_UPLOAD | MASK_08); + /* load video-dma3 NumLines3 and NumBytes3 */ + WRITE_RPS1(CMD_WR_REG | (1 << 8) | (NUM_LINE_BYTE3/4)); + /* dev->vbi_count*2 lines, 720 pixel (= 1440 Bytes) */ + WRITE_RPS1((2 << 16) | (vbi_pixel_to_capture)); + /* load brs-control register */ + WRITE_RPS1(CMD_WR_REG | (1 << 8) | (BRS_CTRL/4)); + /* Set BRS right: note: this is an experimental value for BXO (=> PAL!) */ + WRITE_RPS1((540 << 7) | (5 << 19)); // 5 == vbi_start + /* wait for brs_done */ + WRITE_RPS1(CMD_PAUSE | MASK_08); + /* upload brs and video-dma3*/ + WRITE_RPS1(CMD_UPLOAD | MASK_08 | MASK_04); + /* load mc2 register: enable dma3 */ + WRITE_RPS1(CMD_WR_REG | (1 << 8) | (MC1/4)); + WRITE_RPS1(MASK_20 | MASK_04); + /* generate interrupt */ + WRITE_RPS1(CMD_INTERRUPT); + /* stop rps1 */ + WRITE_RPS1(CMD_STOP); + + /* we have to do the workaround twice to be sure that + everything is ok */ + for(i = 0; i < 2; i++) { + + /* indicate to the irq handler that we do the workaround */ + saa7146_write(dev, MC2, MASK_31|MASK_15); + + saa7146_write(dev, NUM_LINE_BYTE3, (1<<16)|(2<<0)); + saa7146_write(dev, MC2, MASK_04|MASK_20); + + /* enable rps1 irqs */ + SAA7146_IER_ENABLE(dev,MASK_28); + + /* prepare to wait to be woken up by the irq-handler */ + add_wait_queue(&vv->vbi_wq, &wait); + current->state = TASK_INTERRUPTIBLE; + + /* start rps1 to enable workaround */ + saa7146_write(dev, RPS_ADDR1, dev->d_rps1.dma_handle); + saa7146_write(dev, MC1, (MASK_13 | MASK_29)); + + schedule(); + + DEB_VBI("brs bug workaround %d/1\n", i); + + remove_wait_queue(&vv->vbi_wq, &wait); + current->state = TASK_RUNNING; + + /* disable rps1 irqs */ + SAA7146_IER_DISABLE(dev,MASK_28); + + /* stop video-dma3 */ + saa7146_write(dev, MC1, MASK_20); + + if(signal_pending(current)) { + + DEB_VBI("aborted (rps:0x%08x)\n", + saa7146_read(dev, RPS_ADDR1)); + + /* stop rps1 for sure */ + saa7146_write(dev, MC1, MASK_29); + + pci_free_consistent(dev->pci, 4096, cpu, dma_addr); + return -EINTR; + } + } + + pci_free_consistent(dev->pci, 4096, cpu, dma_addr); + return 0; +} + +static void saa7146_set_vbi_capture(struct saa7146_dev *dev, struct saa7146_buf *buf, struct saa7146_buf *next) +{ + struct saa7146_vv *vv = dev->vv_data; + + struct saa7146_video_dma vdma3; + + int count = 0; + unsigned long e_wait = vv->current_hps_sync == SAA7146_HPS_SYNC_PORT_A ? CMD_E_FID_A : CMD_E_FID_B; + unsigned long o_wait = vv->current_hps_sync == SAA7146_HPS_SYNC_PORT_A ? CMD_O_FID_A : CMD_O_FID_B; + +/* + vdma3.base_even = 0xc8000000+2560*70; + vdma3.base_odd = 0xc8000000; + vdma3.prot_addr = 0xc8000000+2560*164; + vdma3.pitch = 2560; + vdma3.base_page = 0; + vdma3.num_line_byte = (64<<16)|((vbi_pixel_to_capture)<<0); // set above! +*/ + vdma3.base_even = buf->pt[2].offset; + vdma3.base_odd = buf->pt[2].offset + 16 * vbi_pixel_to_capture; + vdma3.prot_addr = buf->pt[2].offset + 16 * 2 * vbi_pixel_to_capture; + vdma3.pitch = vbi_pixel_to_capture; + vdma3.base_page = buf->pt[2].dma | ME1; + vdma3.num_line_byte = (16 << 16) | vbi_pixel_to_capture; + + saa7146_write_out_dma(dev, 3, &vdma3); + + /* write beginning of rps-program */ + count = 0; + + /* wait for o_fid_a/b / e_fid_a/b toggle only if bit 1 is not set */ + + /* we don't wait here for the first field anymore. this is different from the video + capture and might cause that the first buffer is only half filled (with only + one field). but since this is some sort of streaming data, this is not that negative. + but by doing this, we can use the whole engine from videobuf-dma-sg.c... */ + +/* + WRITE_RPS1(CMD_PAUSE | CMD_OAN | CMD_SIG1 | e_wait); + WRITE_RPS1(CMD_PAUSE | CMD_OAN | CMD_SIG1 | o_wait); +*/ + /* set bit 1 */ + WRITE_RPS1(CMD_WR_REG | (1 << 8) | (MC2/4)); + WRITE_RPS1(MASK_28 | MASK_12); + + /* turn on video-dma3 */ + WRITE_RPS1(CMD_WR_REG_MASK | (MC1/4)); + WRITE_RPS1(MASK_04 | MASK_20); /* => mask */ + WRITE_RPS1(MASK_04 | MASK_20); /* => values */ + + /* wait for o_fid_a/b / e_fid_a/b toggle */ + WRITE_RPS1(CMD_PAUSE | o_wait); + WRITE_RPS1(CMD_PAUSE | e_wait); + + /* generate interrupt */ + WRITE_RPS1(CMD_INTERRUPT); + + /* stop */ + WRITE_RPS1(CMD_STOP); + + /* enable rps1 irqs */ + SAA7146_IER_ENABLE(dev, MASK_28); + + /* write the address of the rps-program */ + saa7146_write(dev, RPS_ADDR1, dev->d_rps1.dma_handle); + + /* turn on rps */ + saa7146_write(dev, MC1, (MASK_13 | MASK_29)); +} + +static int buffer_activate(struct saa7146_dev *dev, + struct saa7146_buf *buf, + struct saa7146_buf *next) +{ + struct saa7146_vv *vv = dev->vv_data; + buf->vb.state = VIDEOBUF_ACTIVE; + + DEB_VBI("dev:%p, buf:%p, next:%p\n", dev, buf, next); + saa7146_set_vbi_capture(dev,buf,next); + + mod_timer(&vv->vbi_dmaq.timeout, jiffies+BUFFER_TIMEOUT); + return 0; +} + +static int buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,enum v4l2_field field) +{ + struct file *file = q->priv_data; + struct saa7146_fh *fh = file->private_data; + struct saa7146_dev *dev = fh->dev; + struct saa7146_buf *buf = (struct saa7146_buf *)vb; + + int err = 0; + int lines, llength, size; + + lines = 16 * 2 ; /* 2 fields */ + llength = vbi_pixel_to_capture; + size = lines * llength; + + DEB_VBI("vb:%p\n", vb); + + if (0 != buf->vb.baddr && buf->vb.bsize < size) { + DEB_VBI("size mismatch\n"); + return -EINVAL; + } + + if (buf->vb.size != size) + saa7146_dma_free(dev,q,buf); + + if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { + struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb); + + buf->vb.width = llength; + buf->vb.height = lines; + buf->vb.size = size; + buf->vb.field = field; // FIXME: check this + + saa7146_pgtable_free(dev->pci, &buf->pt[2]); + saa7146_pgtable_alloc(dev->pci, &buf->pt[2]); + + err = videobuf_iolock(q,&buf->vb, NULL); + if (err) + goto oops; + err = saa7146_pgtable_build_single(dev->pci, &buf->pt[2], + dma->sglist, dma->sglen); + if (0 != err) + return err; + } + buf->vb.state = VIDEOBUF_PREPARED; + buf->activate = buffer_activate; + + return 0; + + oops: + DEB_VBI("error out\n"); + saa7146_dma_free(dev,q,buf); + + return err; +} + +static int buffer_setup(struct videobuf_queue *q, unsigned int *count, unsigned int *size) +{ + int llength,lines; + + lines = 16 * 2 ; /* 2 fields */ + llength = vbi_pixel_to_capture; + + *size = lines * llength; + *count = 2; + + DEB_VBI("count:%d, size:%d\n", *count, *size); + + return 0; +} + +static void buffer_queue(struct videobuf_queue *q, struct videobuf_buffer *vb) +{ + struct file *file = q->priv_data; + struct saa7146_fh *fh = file->private_data; + struct saa7146_dev *dev = fh->dev; + struct saa7146_vv *vv = dev->vv_data; + struct saa7146_buf *buf = (struct saa7146_buf *)vb; + + DEB_VBI("vb:%p\n", vb); + saa7146_buffer_queue(dev, &vv->vbi_dmaq, buf); +} + +static void buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb) +{ + struct file *file = q->priv_data; + struct saa7146_fh *fh = file->private_data; + struct saa7146_dev *dev = fh->dev; + struct saa7146_buf *buf = (struct saa7146_buf *)vb; + + DEB_VBI("vb:%p\n", vb); + saa7146_dma_free(dev,q,buf); +} + +static struct videobuf_queue_ops vbi_qops = { + .buf_setup = buffer_setup, + .buf_prepare = buffer_prepare, + .buf_queue = buffer_queue, + .buf_release = buffer_release, +}; + +/* ------------------------------------------------------------------ */ + +static void vbi_stop(struct saa7146_fh *fh, struct file *file) +{ + struct saa7146_dev *dev = fh->dev; + struct saa7146_vv *vv = dev->vv_data; + unsigned long flags; + DEB_VBI("dev:%p, fh:%p\n", dev, fh); + + spin_lock_irqsave(&dev->slock,flags); + + /* disable rps1 */ + saa7146_write(dev, MC1, MASK_29); + + /* disable rps1 irqs */ + SAA7146_IER_DISABLE(dev, MASK_28); + + /* shut down dma 3 transfers */ + saa7146_write(dev, MC1, MASK_20); + + if (vv->vbi_dmaq.curr) + saa7146_buffer_finish(dev, &vv->vbi_dmaq, VIDEOBUF_DONE); + + videobuf_queue_cancel(&fh->vbi_q); + + vv->vbi_streaming = NULL; + + del_timer(&vv->vbi_dmaq.timeout); + del_timer(&vv->vbi_read_timeout); + + spin_unlock_irqrestore(&dev->slock, flags); +} + +static void vbi_read_timeout(unsigned long data) +{ + struct file *file = (struct file*)data; + struct saa7146_fh *fh = file->private_data; + struct saa7146_dev *dev = fh->dev; + + DEB_VBI("dev:%p, fh:%p\n", dev, fh); + + vbi_stop(fh, file); +} + +static void vbi_init(struct saa7146_dev *dev, struct saa7146_vv *vv) +{ + DEB_VBI("dev:%p\n", dev); + + INIT_LIST_HEAD(&vv->vbi_dmaq.queue); + + init_timer(&vv->vbi_dmaq.timeout); + vv->vbi_dmaq.timeout.function = saa7146_buffer_timeout; + vv->vbi_dmaq.timeout.data = (unsigned long)(&vv->vbi_dmaq); + vv->vbi_dmaq.dev = dev; + + init_waitqueue_head(&vv->vbi_wq); +} + +static int vbi_open(struct saa7146_dev *dev, struct file *file) +{ + struct saa7146_fh *fh = file->private_data; + struct saa7146_vv *vv = fh->dev->vv_data; + + u32 arbtr_ctrl = saa7146_read(dev, PCI_BT_V1); + int ret = 0; + + DEB_VBI("dev:%p, fh:%p\n", dev, fh); + + ret = saa7146_res_get(fh, RESOURCE_DMA3_BRS); + if (0 == ret) { + DEB_S("cannot get vbi RESOURCE_DMA3_BRS resource\n"); + return -EBUSY; + } + + /* adjust arbitrition control for video dma 3 */ + arbtr_ctrl &= ~0x1f0000; + arbtr_ctrl |= 0x1d0000; + saa7146_write(dev, PCI_BT_V1, arbtr_ctrl); + saa7146_write(dev, MC2, (MASK_04|MASK_20)); + + videobuf_queue_sg_init(&fh->vbi_q, &vbi_qops, + &dev->pci->dev, &dev->slock, + V4L2_BUF_TYPE_VBI_CAPTURE, + V4L2_FIELD_SEQ_TB, // FIXME: does this really work? + sizeof(struct saa7146_buf), + file, &dev->v4l2_lock); + + vv->vbi_read_timeout.function = vbi_read_timeout; + vv->vbi_read_timeout.data = (unsigned long)file; + + /* initialize the brs */ + if ( 0 != (SAA7146_USE_PORT_B_FOR_VBI & dev->ext_vv_data->flags)) { + saa7146_write(dev, BRS_CTRL, MASK_30|MASK_29 | (7 << 19)); + } else { + saa7146_write(dev, BRS_CTRL, 0x00000001); + + if (0 != (ret = vbi_workaround(dev))) { + DEB_VBI("vbi workaround failed!\n"); + /* return ret;*/ + } + } + + /* upload brs register */ + saa7146_write(dev, MC2, (MASK_08|MASK_24)); + return 0; +} + +static void vbi_close(struct saa7146_dev *dev, struct file *file) +{ + struct saa7146_fh *fh = file->private_data; + struct saa7146_vv *vv = dev->vv_data; + DEB_VBI("dev:%p, fh:%p\n", dev, fh); + + if( fh == vv->vbi_streaming ) { + vbi_stop(fh, file); + } + saa7146_res_free(fh, RESOURCE_DMA3_BRS); +} + +static void vbi_irq_done(struct saa7146_dev *dev, unsigned long status) +{ + struct saa7146_vv *vv = dev->vv_data; + spin_lock(&dev->slock); + + if (vv->vbi_dmaq.curr) { + DEB_VBI("dev:%p, curr:%p\n", dev, vv->vbi_dmaq.curr); + /* this must be += 2, one count for each field */ + vv->vbi_fieldcount+=2; + vv->vbi_dmaq.curr->vb.field_count = vv->vbi_fieldcount; + saa7146_buffer_finish(dev, &vv->vbi_dmaq, VIDEOBUF_DONE); + } else { + DEB_VBI("dev:%p\n", dev); + } + saa7146_buffer_next(dev, &vv->vbi_dmaq, 1); + + spin_unlock(&dev->slock); +} + +static ssize_t vbi_read(struct file *file, char __user *data, size_t count, loff_t *ppos) +{ + struct saa7146_fh *fh = file->private_data; + struct saa7146_dev *dev = fh->dev; + struct saa7146_vv *vv = dev->vv_data; + ssize_t ret = 0; + + DEB_VBI("dev:%p, fh:%p\n", dev, fh); + + if( NULL == vv->vbi_streaming ) { + // fixme: check if dma3 is available + // fixme: activate vbi engine here if necessary. (really?) + vv->vbi_streaming = fh; + } + + if( fh != vv->vbi_streaming ) { + DEB_VBI("open %p is already using vbi capture\n", + vv->vbi_streaming); + return -EBUSY; + } + + mod_timer(&vv->vbi_read_timeout, jiffies+BUFFER_TIMEOUT); + ret = videobuf_read_stream(&fh->vbi_q, data, count, ppos, 1, + file->f_flags & O_NONBLOCK); +/* + printk("BASE_ODD3: 0x%08x\n", saa7146_read(dev, BASE_ODD3)); + printk("BASE_EVEN3: 0x%08x\n", saa7146_read(dev, BASE_EVEN3)); + printk("PROT_ADDR3: 0x%08x\n", saa7146_read(dev, PROT_ADDR3)); + printk("PITCH3: 0x%08x\n", saa7146_read(dev, PITCH3)); + printk("BASE_PAGE3: 0x%08x\n", saa7146_read(dev, BASE_PAGE3)); + printk("NUM_LINE_BYTE3: 0x%08x\n", saa7146_read(dev, NUM_LINE_BYTE3)); + printk("BRS_CTRL: 0x%08x\n", saa7146_read(dev, BRS_CTRL)); +*/ + return ret; +} + +struct saa7146_use_ops saa7146_vbi_uops = { + .init = vbi_init, + .open = vbi_open, + .release = vbi_close, + .irq_done = vbi_irq_done, + .read = vbi_read, +}; diff --git a/drivers/media/common/saa7146/saa7146_video.c b/drivers/media/common/saa7146/saa7146_video.c new file mode 100644 index 0000000..fe907f2 --- /dev/null +++ b/drivers/media/common/saa7146/saa7146_video.c @@ -0,0 +1,1332 @@ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <media/saa7146_vv.h> +#include <media/v4l2-chip-ident.h> +#include <media/v4l2-event.h> +#include <media/v4l2-ctrls.h> +#include <linux/module.h> + +static int max_memory = 32; + +module_param(max_memory, int, 0644); +MODULE_PARM_DESC(max_memory, "maximum memory usage for capture buffers (default: 32Mb)"); + +#define IS_CAPTURE_ACTIVE(fh) \ + (((vv->video_status & STATUS_CAPTURE) != 0) && (vv->video_fh == fh)) + +#define IS_OVERLAY_ACTIVE(fh) \ + (((vv->video_status & STATUS_OVERLAY) != 0) && (vv->video_fh == fh)) + +/* format descriptions for capture and preview */ +static struct saa7146_format formats[] = { + { + .name = "RGB-8 (3-3-2)", + .pixelformat = V4L2_PIX_FMT_RGB332, + .trans = RGB08_COMPOSED, + .depth = 8, + .flags = 0, + }, { + .name = "RGB-16 (5/B-6/G-5/R)", + .pixelformat = V4L2_PIX_FMT_RGB565, + .trans = RGB16_COMPOSED, + .depth = 16, + .flags = 0, + }, { + .name = "RGB-24 (B-G-R)", + .pixelformat = V4L2_PIX_FMT_BGR24, + .trans = RGB24_COMPOSED, + .depth = 24, + .flags = 0, + }, { + .name = "RGB-32 (B-G-R)", + .pixelformat = V4L2_PIX_FMT_BGR32, + .trans = RGB32_COMPOSED, + .depth = 32, + .flags = 0, + }, { + .name = "RGB-32 (R-G-B)", + .pixelformat = V4L2_PIX_FMT_RGB32, + .trans = RGB32_COMPOSED, + .depth = 32, + .flags = 0, + .swap = 0x2, + }, { + .name = "Greyscale-8", + .pixelformat = V4L2_PIX_FMT_GREY, + .trans = Y8, + .depth = 8, + .flags = 0, + }, { + .name = "YUV 4:2:2 planar (Y-Cb-Cr)", + .pixelformat = V4L2_PIX_FMT_YUV422P, + .trans = YUV422_DECOMPOSED, + .depth = 16, + .flags = FORMAT_BYTE_SWAP|FORMAT_IS_PLANAR, + }, { + .name = "YVU 4:2:0 planar (Y-Cb-Cr)", + .pixelformat = V4L2_PIX_FMT_YVU420, + .trans = YUV420_DECOMPOSED, + .depth = 12, + .flags = FORMAT_BYTE_SWAP|FORMAT_IS_PLANAR, + }, { + .name = "YUV 4:2:0 planar (Y-Cb-Cr)", + .pixelformat = V4L2_PIX_FMT_YUV420, + .trans = YUV420_DECOMPOSED, + .depth = 12, + .flags = FORMAT_IS_PLANAR, + }, { + .name = "YUV 4:2:2 (U-Y-V-Y)", + .pixelformat = V4L2_PIX_FMT_UYVY, + .trans = YUV422_COMPOSED, + .depth = 16, + .flags = 0, + } +}; + +/* unfortunately, the saa7146 contains a bug which prevents it from doing on-the-fly byte swaps. + due to this, it's impossible to provide additional *packed* formats, which are simply byte swapped + (like V4L2_PIX_FMT_YUYV) ... 8-( */ + +static int NUM_FORMATS = sizeof(formats)/sizeof(struct saa7146_format); + +struct saa7146_format* saa7146_format_by_fourcc(struct saa7146_dev *dev, int fourcc) +{ + int i, j = NUM_FORMATS; + + for (i = 0; i < j; i++) { + if (formats[i].pixelformat == fourcc) { + return formats+i; + } + } + + DEB_D("unknown pixelformat:'%4.4s'\n", (char *)&fourcc); + return NULL; +} + +static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh, struct v4l2_format *f); + +int saa7146_start_preview(struct saa7146_fh *fh) +{ + struct saa7146_dev *dev = fh->dev; + struct saa7146_vv *vv = dev->vv_data; + struct v4l2_format fmt; + int ret = 0, err = 0; + + DEB_EE("dev:%p, fh:%p\n", dev, fh); + + /* check if we have overlay information */ + if (vv->ov.fh == NULL) { + DEB_D("no overlay data available. try S_FMT first.\n"); + return -EAGAIN; + } + + /* check if streaming capture is running */ + if (IS_CAPTURE_ACTIVE(fh) != 0) { + DEB_D("streaming capture is active\n"); + return -EBUSY; + } + + /* check if overlay is running */ + if (IS_OVERLAY_ACTIVE(fh) != 0) { + if (vv->video_fh == fh) { + DEB_D("overlay is already active\n"); + return 0; + } + DEB_D("overlay is already active in another open\n"); + return -EBUSY; + } + + if (0 == saa7146_res_get(fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP)) { + DEB_D("cannot get necessary overlay resources\n"); + return -EBUSY; + } + + fmt.fmt.win = vv->ov.win; + err = vidioc_try_fmt_vid_overlay(NULL, fh, &fmt); + if (0 != err) { + saa7146_res_free(vv->video_fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP); + return -EBUSY; + } + vv->ov.win = fmt.fmt.win; + + DEB_D("%dx%d+%d+%d %s field=%s\n", + vv->ov.win.w.width, vv->ov.win.w.height, + vv->ov.win.w.left, vv->ov.win.w.top, + vv->ov_fmt->name, v4l2_field_names[vv->ov.win.field]); + + if (0 != (ret = saa7146_enable_overlay(fh))) { + DEB_D("enabling overlay failed: %d\n", ret); + saa7146_res_free(vv->video_fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP); + return ret; + } + + vv->video_status = STATUS_OVERLAY; + vv->video_fh = fh; + + return 0; +} +EXPORT_SYMBOL_GPL(saa7146_start_preview); + +int saa7146_stop_preview(struct saa7146_fh *fh) +{ + struct saa7146_dev *dev = fh->dev; + struct saa7146_vv *vv = dev->vv_data; + + DEB_EE("dev:%p, fh:%p\n", dev, fh); + + /* check if streaming capture is running */ + if (IS_CAPTURE_ACTIVE(fh) != 0) { + DEB_D("streaming capture is active\n"); + return -EBUSY; + } + + /* check if overlay is running at all */ + if ((vv->video_status & STATUS_OVERLAY) == 0) { + DEB_D("no active overlay\n"); + return 0; + } + + if (vv->video_fh != fh) { + DEB_D("overlay is active, but in another open\n"); + return -EBUSY; + } + + vv->video_status = 0; + vv->video_fh = NULL; + + saa7146_disable_overlay(fh); + + saa7146_res_free(fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP); + + return 0; +} +EXPORT_SYMBOL_GPL(saa7146_stop_preview); + +/********************************************************************************/ +/* common pagetable functions */ + +static int saa7146_pgtable_build(struct saa7146_dev *dev, struct saa7146_buf *buf) +{ + struct pci_dev *pci = dev->pci; + struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb); + struct scatterlist *list = dma->sglist; + int length = dma->sglen; + struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat); + + DEB_EE("dev:%p, buf:%p, sg_len:%d\n", dev, buf, length); + + if( 0 != IS_PLANAR(sfmt->trans)) { + struct saa7146_pgtable *pt1 = &buf->pt[0]; + struct saa7146_pgtable *pt2 = &buf->pt[1]; + struct saa7146_pgtable *pt3 = &buf->pt[2]; + __le32 *ptr1, *ptr2, *ptr3; + __le32 fill; + + int size = buf->fmt->width*buf->fmt->height; + int i,p,m1,m2,m3,o1,o2; + + switch( sfmt->depth ) { + case 12: { + /* create some offsets inside the page table */ + m1 = ((size+PAGE_SIZE)/PAGE_SIZE)-1; + m2 = ((size+(size/4)+PAGE_SIZE)/PAGE_SIZE)-1; + m3 = ((size+(size/2)+PAGE_SIZE)/PAGE_SIZE)-1; + o1 = size%PAGE_SIZE; + o2 = (size+(size/4))%PAGE_SIZE; + DEB_CAP("size:%d, m1:%d, m2:%d, m3:%d, o1:%d, o2:%d\n", + size, m1, m2, m3, o1, o2); + break; + } + case 16: { + /* create some offsets inside the page table */ + m1 = ((size+PAGE_SIZE)/PAGE_SIZE)-1; + m2 = ((size+(size/2)+PAGE_SIZE)/PAGE_SIZE)-1; + m3 = ((2*size+PAGE_SIZE)/PAGE_SIZE)-1; + o1 = size%PAGE_SIZE; + o2 = (size+(size/2))%PAGE_SIZE; + DEB_CAP("size:%d, m1:%d, m2:%d, m3:%d, o1:%d, o2:%d\n", + size, m1, m2, m3, o1, o2); + break; + } + default: { + return -1; + } + } + + ptr1 = pt1->cpu; + ptr2 = pt2->cpu; + ptr3 = pt3->cpu; + + /* walk all pages, copy all page addresses to ptr1 */ + for (i = 0; i < length; i++, list++) { + for (p = 0; p * 4096 < list->length; p++, ptr1++) { + *ptr1 = cpu_to_le32(sg_dma_address(list) - list->offset); + } + } +/* + ptr1 = pt1->cpu; + for(j=0;j<40;j++) { + printk("ptr1 %d: 0x%08x\n",j,ptr1[j]); + } +*/ + + /* if we have a user buffer, the first page may not be + aligned to a page boundary. */ + pt1->offset = dma->sglist->offset; + pt2->offset = pt1->offset+o1; + pt3->offset = pt1->offset+o2; + + /* create video-dma2 page table */ + ptr1 = pt1->cpu; + for(i = m1; i <= m2 ; i++, ptr2++) { + *ptr2 = ptr1[i]; + } + fill = *(ptr2-1); + for(;i<1024;i++,ptr2++) { + *ptr2 = fill; + } + /* create video-dma3 page table */ + ptr1 = pt1->cpu; + for(i = m2; i <= m3; i++,ptr3++) { + *ptr3 = ptr1[i]; + } + fill = *(ptr3-1); + for(;i<1024;i++,ptr3++) { + *ptr3 = fill; + } + /* finally: finish up video-dma1 page table */ + ptr1 = pt1->cpu+m1; + fill = pt1->cpu[m1]; + for(i=m1;i<1024;i++,ptr1++) { + *ptr1 = fill; + } +/* + ptr1 = pt1->cpu; + ptr2 = pt2->cpu; + ptr3 = pt3->cpu; + for(j=0;j<40;j++) { + printk("ptr1 %d: 0x%08x\n",j,ptr1[j]); + } + for(j=0;j<40;j++) { + printk("ptr2 %d: 0x%08x\n",j,ptr2[j]); + } + for(j=0;j<40;j++) { + printk("ptr3 %d: 0x%08x\n",j,ptr3[j]); + } +*/ + } else { + struct saa7146_pgtable *pt = &buf->pt[0]; + return saa7146_pgtable_build_single(pci, pt, list, length); + } + + return 0; +} + + +/********************************************************************************/ +/* file operations */ + +static int video_begin(struct saa7146_fh *fh) +{ + struct saa7146_dev *dev = fh->dev; + struct saa7146_vv *vv = dev->vv_data; + struct saa7146_format *fmt = NULL; + unsigned int resource; + int ret = 0, err = 0; + + DEB_EE("dev:%p, fh:%p\n", dev, fh); + + if ((vv->video_status & STATUS_CAPTURE) != 0) { + if (vv->video_fh == fh) { + DEB_S("already capturing\n"); + return 0; + } + DEB_S("already capturing in another open\n"); + return -EBUSY; + } + + if ((vv->video_status & STATUS_OVERLAY) != 0) { + DEB_S("warning: suspending overlay video for streaming capture\n"); + vv->ov_suspend = vv->video_fh; + err = saa7146_stop_preview(vv->video_fh); /* side effect: video_status is now 0, video_fh is NULL */ + if (0 != err) { + DEB_D("suspending video failed. aborting\n"); + return err; + } + } + + fmt = saa7146_format_by_fourcc(dev, vv->video_fmt.pixelformat); + /* we need to have a valid format set here */ + BUG_ON(NULL == fmt); + + if (0 != (fmt->flags & FORMAT_IS_PLANAR)) { + resource = RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP|RESOURCE_DMA3_BRS; + } else { + resource = RESOURCE_DMA1_HPS; + } + + ret = saa7146_res_get(fh, resource); + if (0 == ret) { + DEB_S("cannot get capture resource %d\n", resource); + if (vv->ov_suspend != NULL) { + saa7146_start_preview(vv->ov_suspend); + vv->ov_suspend = NULL; + } + return -EBUSY; + } + + /* clear out beginning of streaming bit (rps register 0)*/ + saa7146_write(dev, MC2, MASK_27 ); + + /* enable rps0 irqs */ + SAA7146_IER_ENABLE(dev, MASK_27); + + vv->video_fh = fh; + vv->video_status = STATUS_CAPTURE; + + return 0; +} + +static int video_end(struct saa7146_fh *fh, struct file *file) +{ + struct saa7146_dev *dev = fh->dev; + struct saa7146_vv *vv = dev->vv_data; + struct saa7146_format *fmt = NULL; + unsigned long flags; + unsigned int resource; + u32 dmas = 0; + DEB_EE("dev:%p, fh:%p\n", dev, fh); + + if ((vv->video_status & STATUS_CAPTURE) != STATUS_CAPTURE) { + DEB_S("not capturing\n"); + return 0; + } + + if (vv->video_fh != fh) { + DEB_S("capturing, but in another open\n"); + return -EBUSY; + } + + fmt = saa7146_format_by_fourcc(dev, vv->video_fmt.pixelformat); + /* we need to have a valid format set here */ + BUG_ON(NULL == fmt); + + if (0 != (fmt->flags & FORMAT_IS_PLANAR)) { + resource = RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP|RESOURCE_DMA3_BRS; + dmas = MASK_22 | MASK_21 | MASK_20; + } else { + resource = RESOURCE_DMA1_HPS; + dmas = MASK_22; + } + spin_lock_irqsave(&dev->slock,flags); + + /* disable rps0 */ + saa7146_write(dev, MC1, MASK_28); + + /* disable rps0 irqs */ + SAA7146_IER_DISABLE(dev, MASK_27); + + /* shut down all used video dma transfers */ + saa7146_write(dev, MC1, dmas); + + spin_unlock_irqrestore(&dev->slock, flags); + + vv->video_fh = NULL; + vv->video_status = 0; + + saa7146_res_free(fh, resource); + + if (vv->ov_suspend != NULL) { + saa7146_start_preview(vv->ov_suspend); + vv->ov_suspend = NULL; + } + + return 0; +} + +static int vidioc_querycap(struct file *file, void *fh, struct v4l2_capability *cap) +{ + struct video_device *vdev = video_devdata(file); + struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; + + strcpy((char *)cap->driver, "saa7146 v4l2"); + strlcpy((char *)cap->card, dev->ext->name, sizeof(cap->card)); + sprintf((char *)cap->bus_info, "PCI:%s", pci_name(dev->pci)); + cap->device_caps = + V4L2_CAP_VIDEO_CAPTURE | + V4L2_CAP_VIDEO_OVERLAY | + V4L2_CAP_READWRITE | + V4L2_CAP_STREAMING; + cap->device_caps |= dev->ext_vv_data->capabilities; + cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; + if (vdev->vfl_type == VFL_TYPE_GRABBER) + cap->device_caps &= + ~(V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_OUTPUT); + else + cap->device_caps &= + ~(V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OVERLAY | V4L2_CAP_AUDIO); + return 0; +} + +static int vidioc_g_fbuf(struct file *file, void *fh, struct v4l2_framebuffer *fb) +{ + struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; + struct saa7146_vv *vv = dev->vv_data; + + *fb = vv->ov_fb; + fb->capability = V4L2_FBUF_CAP_LIST_CLIPPING; + fb->flags = V4L2_FBUF_FLAG_PRIMARY; + return 0; +} + +static int vidioc_s_fbuf(struct file *file, void *fh, const struct v4l2_framebuffer *fb) +{ + struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; + struct saa7146_vv *vv = dev->vv_data; + struct saa7146_format *fmt; + + DEB_EE("VIDIOC_S_FBUF\n"); + + if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RAWIO)) + return -EPERM; + + /* check args */ + fmt = saa7146_format_by_fourcc(dev, fb->fmt.pixelformat); + if (NULL == fmt) + return -EINVAL; + + /* planar formats are not allowed for overlay video, clipping and video dma would clash */ + if (fmt->flags & FORMAT_IS_PLANAR) + DEB_S("planar pixelformat '%4.4s' not allowed for overlay\n", + (char *)&fmt->pixelformat); + + /* check if overlay is running */ + if (IS_OVERLAY_ACTIVE(fh) != 0) { + if (vv->video_fh != fh) { + DEB_D("refusing to change framebuffer informations while overlay is active in another open\n"); + return -EBUSY; + } + } + + /* ok, accept it */ + vv->ov_fb = *fb; + vv->ov_fmt = fmt; + + if (vv->ov_fb.fmt.bytesperline < vv->ov_fb.fmt.width) { + vv->ov_fb.fmt.bytesperline = vv->ov_fb.fmt.width * fmt->depth / 8; + DEB_D("setting bytesperline to %d\n", vv->ov_fb.fmt.bytesperline); + } + return 0; +} + +static int vidioc_enum_fmt_vid_cap(struct file *file, void *fh, struct v4l2_fmtdesc *f) +{ + if (f->index >= NUM_FORMATS) + return -EINVAL; + strlcpy((char *)f->description, formats[f->index].name, + sizeof(f->description)); + f->pixelformat = formats[f->index].pixelformat; + return 0; +} + +int saa7146_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct saa7146_dev *dev = container_of(ctrl->handler, + struct saa7146_dev, ctrl_handler); + struct saa7146_vv *vv = dev->vv_data; + u32 val; + + switch (ctrl->id) { + case V4L2_CID_BRIGHTNESS: + val = saa7146_read(dev, BCS_CTRL); + val &= 0x00ffffff; + val |= (ctrl->val << 24); + saa7146_write(dev, BCS_CTRL, val); + saa7146_write(dev, MC2, MASK_22 | MASK_06); + break; + + case V4L2_CID_CONTRAST: + val = saa7146_read(dev, BCS_CTRL); + val &= 0xff00ffff; + val |= (ctrl->val << 16); + saa7146_write(dev, BCS_CTRL, val); + saa7146_write(dev, MC2, MASK_22 | MASK_06); + break; + + case V4L2_CID_SATURATION: + val = saa7146_read(dev, BCS_CTRL); + val &= 0xffffff00; + val |= (ctrl->val << 0); + saa7146_write(dev, BCS_CTRL, val); + saa7146_write(dev, MC2, MASK_22 | MASK_06); + break; + + case V4L2_CID_HFLIP: + /* fixme: we can support changing VFLIP and HFLIP here... */ + if ((vv->video_status & STATUS_CAPTURE)) + return -EBUSY; + vv->hflip = ctrl->val; + break; + + case V4L2_CID_VFLIP: + if ((vv->video_status & STATUS_CAPTURE)) + return -EBUSY; + vv->vflip = ctrl->val; + break; + + default: + return -EINVAL; + } + + if ((vv->video_status & STATUS_OVERLAY) != 0) { /* CHECK: && (vv->video_fh == fh)) */ + struct saa7146_fh *fh = vv->video_fh; + + saa7146_stop_preview(fh); + saa7146_start_preview(fh); + } + return 0; +} + +static int vidioc_g_parm(struct file *file, void *fh, + struct v4l2_streamparm *parm) +{ + struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; + struct saa7146_vv *vv = dev->vv_data; + + if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + parm->parm.capture.readbuffers = 1; + v4l2_video_std_frame_period(vv->standard->id, + &parm->parm.capture.timeperframe); + return 0; +} + +static int vidioc_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f) +{ + struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; + struct saa7146_vv *vv = dev->vv_data; + + f->fmt.pix = vv->video_fmt; + return 0; +} + +static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh, struct v4l2_format *f) +{ + struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; + struct saa7146_vv *vv = dev->vv_data; + + f->fmt.win = vv->ov.win; + return 0; +} + +static int vidioc_g_fmt_vbi_cap(struct file *file, void *fh, struct v4l2_format *f) +{ + struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; + struct saa7146_vv *vv = dev->vv_data; + + f->fmt.vbi = vv->vbi_fmt; + return 0; +} + +static int vidioc_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f) +{ + struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; + struct saa7146_vv *vv = dev->vv_data; + struct saa7146_format *fmt; + enum v4l2_field field; + int maxw, maxh; + int calc_bpl; + + DEB_EE("V4L2_BUF_TYPE_VIDEO_CAPTURE: dev:%p, fh:%p\n", dev, fh); + + fmt = saa7146_format_by_fourcc(dev, f->fmt.pix.pixelformat); + if (NULL == fmt) + return -EINVAL; + + field = f->fmt.pix.field; + maxw = vv->standard->h_max_out; + maxh = vv->standard->v_max_out; + + if (V4L2_FIELD_ANY == field) { + field = (f->fmt.pix.height > maxh / 2) + ? V4L2_FIELD_INTERLACED + : V4L2_FIELD_BOTTOM; + } + switch (field) { + case V4L2_FIELD_ALTERNATE: + vv->last_field = V4L2_FIELD_TOP; + maxh = maxh / 2; + break; + case V4L2_FIELD_TOP: + case V4L2_FIELD_BOTTOM: + vv->last_field = V4L2_FIELD_INTERLACED; + maxh = maxh / 2; + break; + case V4L2_FIELD_INTERLACED: + vv->last_field = V4L2_FIELD_INTERLACED; + break; + default: + DEB_D("no known field mode '%d'\n", field); + return -EINVAL; + } + + f->fmt.pix.field = field; + f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; + if (f->fmt.pix.width > maxw) + f->fmt.pix.width = maxw; + if (f->fmt.pix.height > maxh) + f->fmt.pix.height = maxh; + + calc_bpl = (f->fmt.pix.width * fmt->depth) / 8; + + if (f->fmt.pix.bytesperline < calc_bpl) + f->fmt.pix.bytesperline = calc_bpl; + + if (f->fmt.pix.bytesperline > (2 * PAGE_SIZE * fmt->depth) / 8) /* arbitrary constraint */ + f->fmt.pix.bytesperline = calc_bpl; + + f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height; + DEB_D("w:%d, h:%d, bytesperline:%d, sizeimage:%d\n", + f->fmt.pix.width, f->fmt.pix.height, + f->fmt.pix.bytesperline, f->fmt.pix.sizeimage); + + return 0; +} + + +static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh, struct v4l2_format *f) +{ + struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; + struct saa7146_vv *vv = dev->vv_data; + struct v4l2_window *win = &f->fmt.win; + enum v4l2_field field; + int maxw, maxh; + + DEB_EE("dev:%p\n", dev); + + if (NULL == vv->ov_fb.base) { + DEB_D("no fb base set\n"); + return -EINVAL; + } + if (NULL == vv->ov_fmt) { + DEB_D("no fb fmt set\n"); + return -EINVAL; + } + if (win->w.width < 48 || win->w.height < 32) { + DEB_D("min width/height. (%d,%d)\n", + win->w.width, win->w.height); + return -EINVAL; + } + if (win->clipcount > 16) { + DEB_D("clipcount too big\n"); + return -EINVAL; + } + + field = win->field; + maxw = vv->standard->h_max_out; + maxh = vv->standard->v_max_out; + + if (V4L2_FIELD_ANY == field) { + field = (win->w.height > maxh / 2) + ? V4L2_FIELD_INTERLACED + : V4L2_FIELD_TOP; + } + switch (field) { + case V4L2_FIELD_TOP: + case V4L2_FIELD_BOTTOM: + case V4L2_FIELD_ALTERNATE: + maxh = maxh / 2; + break; + case V4L2_FIELD_INTERLACED: + break; + default: + DEB_D("no known field mode '%d'\n", field); + return -EINVAL; + } + + win->field = field; + if (win->w.width > maxw) + win->w.width = maxw; + if (win->w.height > maxh) + win->w.height = maxh; + + return 0; +} + +static int vidioc_s_fmt_vid_cap(struct file *file, void *__fh, struct v4l2_format *f) +{ + struct saa7146_fh *fh = __fh; + struct saa7146_dev *dev = fh->dev; + struct saa7146_vv *vv = dev->vv_data; + int err; + + DEB_EE("V4L2_BUF_TYPE_VIDEO_CAPTURE: dev:%p, fh:%p\n", dev, fh); + if (IS_CAPTURE_ACTIVE(fh) != 0) { + DEB_EE("streaming capture is active\n"); + return -EBUSY; + } + err = vidioc_try_fmt_vid_cap(file, fh, f); + if (0 != err) + return err; + vv->video_fmt = f->fmt.pix; + DEB_EE("set to pixelformat '%4.4s'\n", + (char *)&vv->video_fmt.pixelformat); + return 0; +} + +static int vidioc_s_fmt_vid_overlay(struct file *file, void *__fh, struct v4l2_format *f) +{ + struct saa7146_fh *fh = __fh; + struct saa7146_dev *dev = fh->dev; + struct saa7146_vv *vv = dev->vv_data; + int err; + + DEB_EE("V4L2_BUF_TYPE_VIDEO_OVERLAY: dev:%p, fh:%p\n", dev, fh); + err = vidioc_try_fmt_vid_overlay(file, fh, f); + if (0 != err) + return err; + vv->ov.win = f->fmt.win; + vv->ov.nclips = f->fmt.win.clipcount; + if (vv->ov.nclips > 16) + vv->ov.nclips = 16; + if (copy_from_user(vv->ov.clips, f->fmt.win.clips, + sizeof(struct v4l2_clip) * vv->ov.nclips)) { + return -EFAULT; + } + + /* vv->ov.fh is used to indicate that we have valid overlay informations, too */ + vv->ov.fh = fh; + + /* check if our current overlay is active */ + if (IS_OVERLAY_ACTIVE(fh) != 0) { + saa7146_stop_preview(fh); + saa7146_start_preview(fh); + } + return 0; +} + +static int vidioc_g_std(struct file *file, void *fh, v4l2_std_id *norm) +{ + struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; + struct saa7146_vv *vv = dev->vv_data; + + *norm = vv->standard->id; + return 0; +} + + /* the saa7146 supfhrts (used in conjunction with the saa7111a for example) + PAL / NTSC / SECAM. if your hardware does not (or does more) + -- override this function in your extension */ +/* + case VIDIOC_ENUMSTD: + { + struct v4l2_standard *e = arg; + if (e->index < 0 ) + return -EINVAL; + if( e->index < dev->ext_vv_data->num_stds ) { + DEB_EE("VIDIOC_ENUMSTD: index:%d\n", e->index); + v4l2_video_std_construct(e, dev->ext_vv_data->stds[e->index].id, dev->ext_vv_data->stds[e->index].name); + return 0; + } + return -EINVAL; + } + */ + +static int vidioc_s_std(struct file *file, void *fh, v4l2_std_id id) +{ + struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; + struct saa7146_vv *vv = dev->vv_data; + int found = 0; + int err, i; + + DEB_EE("VIDIOC_S_STD\n"); + + if ((vv->video_status & STATUS_CAPTURE) == STATUS_CAPTURE) { + DEB_D("cannot change video standard while streaming capture is active\n"); + return -EBUSY; + } + + if ((vv->video_status & STATUS_OVERLAY) != 0) { + vv->ov_suspend = vv->video_fh; + err = saa7146_stop_preview(vv->video_fh); /* side effect: video_status is now 0, video_fh is NULL */ + if (0 != err) { + DEB_D("suspending video failed. aborting\n"); + return err; + } + } + + for (i = 0; i < dev->ext_vv_data->num_stds; i++) + if (id & dev->ext_vv_data->stds[i].id) + break; + if (i != dev->ext_vv_data->num_stds) { + vv->standard = &dev->ext_vv_data->stds[i]; + if (NULL != dev->ext_vv_data->std_callback) + dev->ext_vv_data->std_callback(dev, vv->standard); + found = 1; + } + + if (vv->ov_suspend != NULL) { + saa7146_start_preview(vv->ov_suspend); + vv->ov_suspend = NULL; + } + + if (!found) { + DEB_EE("VIDIOC_S_STD: standard not found\n"); + return -EINVAL; + } + + DEB_EE("VIDIOC_S_STD: set to standard to '%s'\n", vv->standard->name); + return 0; +} + +static int vidioc_overlay(struct file *file, void *fh, unsigned int on) +{ + int err; + + DEB_D("VIDIOC_OVERLAY on:%d\n", on); + if (on) + err = saa7146_start_preview(fh); + else + err = saa7146_stop_preview(fh); + return err; +} + +static int vidioc_reqbufs(struct file *file, void *__fh, struct v4l2_requestbuffers *b) +{ + struct saa7146_fh *fh = __fh; + + if (b->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) + return videobuf_reqbufs(&fh->video_q, b); + if (b->type == V4L2_BUF_TYPE_VBI_CAPTURE) + return videobuf_reqbufs(&fh->vbi_q, b); + return -EINVAL; +} + +static int vidioc_querybuf(struct file *file, void *__fh, struct v4l2_buffer *buf) +{ + struct saa7146_fh *fh = __fh; + + if (buf->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) + return videobuf_querybuf(&fh->video_q, buf); + if (buf->type == V4L2_BUF_TYPE_VBI_CAPTURE) + return videobuf_querybuf(&fh->vbi_q, buf); + return -EINVAL; +} + +static int vidioc_qbuf(struct file *file, void *__fh, struct v4l2_buffer *buf) +{ + struct saa7146_fh *fh = __fh; + + if (buf->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) + return videobuf_qbuf(&fh->video_q, buf); + if (buf->type == V4L2_BUF_TYPE_VBI_CAPTURE) + return videobuf_qbuf(&fh->vbi_q, buf); + return -EINVAL; +} + +static int vidioc_dqbuf(struct file *file, void *__fh, struct v4l2_buffer *buf) +{ + struct saa7146_fh *fh = __fh; + + if (buf->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) + return videobuf_dqbuf(&fh->video_q, buf, file->f_flags & O_NONBLOCK); + if (buf->type == V4L2_BUF_TYPE_VBI_CAPTURE) + return videobuf_dqbuf(&fh->vbi_q, buf, file->f_flags & O_NONBLOCK); + return -EINVAL; +} + +static int vidioc_streamon(struct file *file, void *__fh, enum v4l2_buf_type type) +{ + struct saa7146_fh *fh = __fh; + int err; + + DEB_D("VIDIOC_STREAMON, type:%d\n", type); + + err = video_begin(fh); + if (err) + return err; + if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE) + return videobuf_streamon(&fh->video_q); + if (type == V4L2_BUF_TYPE_VBI_CAPTURE) + return videobuf_streamon(&fh->vbi_q); + return -EINVAL; +} + +static int vidioc_streamoff(struct file *file, void *__fh, enum v4l2_buf_type type) +{ + struct saa7146_fh *fh = __fh; + struct saa7146_dev *dev = fh->dev; + struct saa7146_vv *vv = dev->vv_data; + int err; + + DEB_D("VIDIOC_STREAMOFF, type:%d\n", type); + + /* ugly: we need to copy some checks from video_end(), + because videobuf_streamoff() relies on the capture running. + check and fix this */ + if ((vv->video_status & STATUS_CAPTURE) != STATUS_CAPTURE) { + DEB_S("not capturing\n"); + return 0; + } + + if (vv->video_fh != fh) { + DEB_S("capturing, but in another open\n"); + return -EBUSY; + } + + err = -EINVAL; + if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE) + err = videobuf_streamoff(&fh->video_q); + else if (type == V4L2_BUF_TYPE_VBI_CAPTURE) + err = videobuf_streamoff(&fh->vbi_q); + if (0 != err) { + DEB_D("warning: videobuf_streamoff() failed\n"); + video_end(fh, file); + } else { + err = video_end(fh, file); + } + return err; +} + +static int vidioc_g_chip_ident(struct file *file, void *__fh, + struct v4l2_dbg_chip_ident *chip) +{ + struct saa7146_fh *fh = __fh; + struct saa7146_dev *dev = fh->dev; + + chip->ident = V4L2_IDENT_NONE; + chip->revision = 0; + if (chip->match.type == V4L2_CHIP_MATCH_HOST) { + if (v4l2_chip_match_host(&chip->match)) + chip->ident = V4L2_IDENT_SAA7146; + return 0; + } + if (chip->match.type != V4L2_CHIP_MATCH_I2C_DRIVER && + chip->match.type != V4L2_CHIP_MATCH_I2C_ADDR) + return -EINVAL; + return v4l2_device_call_until_err(&dev->v4l2_dev, 0, + core, g_chip_ident, chip); +} + +const struct v4l2_ioctl_ops saa7146_video_ioctl_ops = { + .vidioc_querycap = vidioc_querycap, + .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, + .vidioc_enum_fmt_vid_overlay = vidioc_enum_fmt_vid_cap, + .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, + .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, + .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, + .vidioc_g_fmt_vid_overlay = vidioc_g_fmt_vid_overlay, + .vidioc_try_fmt_vid_overlay = vidioc_try_fmt_vid_overlay, + .vidioc_s_fmt_vid_overlay = vidioc_s_fmt_vid_overlay, + .vidioc_g_chip_ident = vidioc_g_chip_ident, + + .vidioc_overlay = vidioc_overlay, + .vidioc_g_fbuf = vidioc_g_fbuf, + .vidioc_s_fbuf = vidioc_s_fbuf, + .vidioc_reqbufs = vidioc_reqbufs, + .vidioc_querybuf = vidioc_querybuf, + .vidioc_qbuf = vidioc_qbuf, + .vidioc_dqbuf = vidioc_dqbuf, + .vidioc_g_std = vidioc_g_std, + .vidioc_s_std = vidioc_s_std, + .vidioc_streamon = vidioc_streamon, + .vidioc_streamoff = vidioc_streamoff, + .vidioc_g_parm = vidioc_g_parm, + .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, +}; + +const struct v4l2_ioctl_ops saa7146_vbi_ioctl_ops = { + .vidioc_querycap = vidioc_querycap, + .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap, + .vidioc_g_chip_ident = vidioc_g_chip_ident, + + .vidioc_reqbufs = vidioc_reqbufs, + .vidioc_querybuf = vidioc_querybuf, + .vidioc_qbuf = vidioc_qbuf, + .vidioc_dqbuf = vidioc_dqbuf, + .vidioc_g_std = vidioc_g_std, + .vidioc_s_std = vidioc_s_std, + .vidioc_streamon = vidioc_streamon, + .vidioc_streamoff = vidioc_streamoff, + .vidioc_g_parm = vidioc_g_parm, + .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, +}; + +/*********************************************************************************/ +/* buffer handling functions */ + +static int buffer_activate (struct saa7146_dev *dev, + struct saa7146_buf *buf, + struct saa7146_buf *next) +{ + struct saa7146_vv *vv = dev->vv_data; + + buf->vb.state = VIDEOBUF_ACTIVE; + saa7146_set_capture(dev,buf,next); + + mod_timer(&vv->video_dmaq.timeout, jiffies+BUFFER_TIMEOUT); + return 0; +} + +static void release_all_pagetables(struct saa7146_dev *dev, struct saa7146_buf *buf) +{ + saa7146_pgtable_free(dev->pci, &buf->pt[0]); + saa7146_pgtable_free(dev->pci, &buf->pt[1]); + saa7146_pgtable_free(dev->pci, &buf->pt[2]); +} + +static int buffer_prepare(struct videobuf_queue *q, + struct videobuf_buffer *vb, enum v4l2_field field) +{ + struct file *file = q->priv_data; + struct saa7146_fh *fh = file->private_data; + struct saa7146_dev *dev = fh->dev; + struct saa7146_vv *vv = dev->vv_data; + struct saa7146_buf *buf = (struct saa7146_buf *)vb; + int size,err = 0; + + DEB_CAP("vbuf:%p\n", vb); + + /* sanity checks */ + if (vv->video_fmt.width < 48 || + vv->video_fmt.height < 32 || + vv->video_fmt.width > vv->standard->h_max_out || + vv->video_fmt.height > vv->standard->v_max_out) { + DEB_D("w (%d) / h (%d) out of bounds\n", + vv->video_fmt.width, vv->video_fmt.height); + return -EINVAL; + } + + size = vv->video_fmt.sizeimage; + if (0 != buf->vb.baddr && buf->vb.bsize < size) { + DEB_D("size mismatch\n"); + return -EINVAL; + } + + DEB_CAP("buffer_prepare [size=%dx%d,bytes=%d,fields=%s]\n", + vv->video_fmt.width, vv->video_fmt.height, + size, v4l2_field_names[vv->video_fmt.field]); + if (buf->vb.width != vv->video_fmt.width || + buf->vb.bytesperline != vv->video_fmt.bytesperline || + buf->vb.height != vv->video_fmt.height || + buf->vb.size != size || + buf->vb.field != field || + buf->vb.field != vv->video_fmt.field || + buf->fmt != &vv->video_fmt) { + saa7146_dma_free(dev,q,buf); + } + + if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { + struct saa7146_format *sfmt; + + buf->vb.bytesperline = vv->video_fmt.bytesperline; + buf->vb.width = vv->video_fmt.width; + buf->vb.height = vv->video_fmt.height; + buf->vb.size = size; + buf->vb.field = field; + buf->fmt = &vv->video_fmt; + buf->vb.field = vv->video_fmt.field; + + sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat); + + release_all_pagetables(dev, buf); + if( 0 != IS_PLANAR(sfmt->trans)) { + saa7146_pgtable_alloc(dev->pci, &buf->pt[0]); + saa7146_pgtable_alloc(dev->pci, &buf->pt[1]); + saa7146_pgtable_alloc(dev->pci, &buf->pt[2]); + } else { + saa7146_pgtable_alloc(dev->pci, &buf->pt[0]); + } + + err = videobuf_iolock(q,&buf->vb, &vv->ov_fb); + if (err) + goto oops; + err = saa7146_pgtable_build(dev,buf); + if (err) + goto oops; + } + buf->vb.state = VIDEOBUF_PREPARED; + buf->activate = buffer_activate; + + return 0; + + oops: + DEB_D("error out\n"); + saa7146_dma_free(dev,q,buf); + + return err; +} + +static int buffer_setup(struct videobuf_queue *q, unsigned int *count, unsigned int *size) +{ + struct file *file = q->priv_data; + struct saa7146_fh *fh = file->private_data; + struct saa7146_vv *vv = fh->dev->vv_data; + + if (0 == *count || *count > MAX_SAA7146_CAPTURE_BUFFERS) + *count = MAX_SAA7146_CAPTURE_BUFFERS; + + *size = vv->video_fmt.sizeimage; + + /* check if we exceed the "max_memory" parameter */ + if( (*count * *size) > (max_memory*1048576) ) { + *count = (max_memory*1048576) / *size; + } + + DEB_CAP("%d buffers, %d bytes each\n", *count, *size); + + return 0; +} + +static void buffer_queue(struct videobuf_queue *q, struct videobuf_buffer *vb) +{ + struct file *file = q->priv_data; + struct saa7146_fh *fh = file->private_data; + struct saa7146_dev *dev = fh->dev; + struct saa7146_vv *vv = dev->vv_data; + struct saa7146_buf *buf = (struct saa7146_buf *)vb; + + DEB_CAP("vbuf:%p\n", vb); + saa7146_buffer_queue(fh->dev, &vv->video_dmaq, buf); +} + +static void buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb) +{ + struct file *file = q->priv_data; + struct saa7146_fh *fh = file->private_data; + struct saa7146_dev *dev = fh->dev; + struct saa7146_buf *buf = (struct saa7146_buf *)vb; + + DEB_CAP("vbuf:%p\n", vb); + + saa7146_dma_free(dev,q,buf); + + release_all_pagetables(dev, buf); +} + +static struct videobuf_queue_ops video_qops = { + .buf_setup = buffer_setup, + .buf_prepare = buffer_prepare, + .buf_queue = buffer_queue, + .buf_release = buffer_release, +}; + +/********************************************************************************/ +/* file operations */ + +static void video_init(struct saa7146_dev *dev, struct saa7146_vv *vv) +{ + INIT_LIST_HEAD(&vv->video_dmaq.queue); + + init_timer(&vv->video_dmaq.timeout); + vv->video_dmaq.timeout.function = saa7146_buffer_timeout; + vv->video_dmaq.timeout.data = (unsigned long)(&vv->video_dmaq); + vv->video_dmaq.dev = dev; + + /* set some default values */ + vv->standard = &dev->ext_vv_data->stds[0]; + + /* FIXME: what's this? */ + vv->current_hps_source = SAA7146_HPS_SOURCE_PORT_A; + vv->current_hps_sync = SAA7146_HPS_SYNC_PORT_A; +} + + +static int video_open(struct saa7146_dev *dev, struct file *file) +{ + struct saa7146_fh *fh = file->private_data; + + videobuf_queue_sg_init(&fh->video_q, &video_qops, + &dev->pci->dev, &dev->slock, + V4L2_BUF_TYPE_VIDEO_CAPTURE, + V4L2_FIELD_INTERLACED, + sizeof(struct saa7146_buf), + file, &dev->v4l2_lock); + + return 0; +} + + +static void video_close(struct saa7146_dev *dev, struct file *file) +{ + struct saa7146_fh *fh = file->private_data; + struct saa7146_vv *vv = dev->vv_data; + struct videobuf_queue *q = &fh->video_q; + + if (IS_CAPTURE_ACTIVE(fh) != 0) + video_end(fh, file); + else if (IS_OVERLAY_ACTIVE(fh) != 0) + saa7146_stop_preview(fh); + + videobuf_stop(q); + /* hmm, why is this function declared void? */ +} + + +static void video_irq_done(struct saa7146_dev *dev, unsigned long st) +{ + struct saa7146_vv *vv = dev->vv_data; + struct saa7146_dmaqueue *q = &vv->video_dmaq; + + spin_lock(&dev->slock); + DEB_CAP("called\n"); + + /* only finish the buffer if we have one... */ + if( NULL != q->curr ) { + saa7146_buffer_finish(dev,q,VIDEOBUF_DONE); + } + saa7146_buffer_next(dev,q,0); + + spin_unlock(&dev->slock); +} + +static ssize_t video_read(struct file *file, char __user *data, size_t count, loff_t *ppos) +{ + struct saa7146_fh *fh = file->private_data; + struct saa7146_dev *dev = fh->dev; + struct saa7146_vv *vv = dev->vv_data; + ssize_t ret = 0; + + DEB_EE("called\n"); + + if ((vv->video_status & STATUS_CAPTURE) != 0) { + /* fixme: should we allow read() captures while streaming capture? */ + if (vv->video_fh == fh) { + DEB_S("already capturing\n"); + return -EBUSY; + } + DEB_S("already capturing in another open\n"); + return -EBUSY; + } + + ret = video_begin(fh); + if( 0 != ret) { + goto out; + } + + ret = videobuf_read_one(&fh->video_q , data, count, ppos, + file->f_flags & O_NONBLOCK); + if (ret != 0) { + video_end(fh, file); + } else { + ret = video_end(fh, file); + } +out: + /* restart overlay if it was active before */ + if (vv->ov_suspend != NULL) { + saa7146_start_preview(vv->ov_suspend); + vv->ov_suspend = NULL; + } + + return ret; +} + +struct saa7146_use_ops saa7146_video_uops = { + .init = video_init, + .open = video_open, + .release = video_close, + .irq_done = video_irq_done, + .read = video_read, +}; |