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Diffstat (limited to 'target/linux/coldfire/patches/032-m5445x_edma_update.patch')
-rw-r--r--target/linux/coldfire/patches/032-m5445x_edma_update.patch553
1 files changed, 0 insertions, 553 deletions
diff --git a/target/linux/coldfire/patches/032-m5445x_edma_update.patch b/target/linux/coldfire/patches/032-m5445x_edma_update.patch
deleted file mode 100644
index 17f2becbd0..0000000000
--- a/target/linux/coldfire/patches/032-m5445x_edma_update.patch
+++ /dev/null
@@ -1,553 +0,0 @@
-From 7b5b08d99d5362e9c36fd7d42d6c06c2a848266c Mon Sep 17 00:00:00 2001
-From: Kurt Mahan <kmahan@freescale.com>
-Date: Sun, 9 Dec 2007 02:21:19 -0700
-Subject: [PATCH] Update EDMA.
-
-LTIBName: m5445x-edma-update
-Signed-off-by: Kurt Mahan <kmahan@freescale.com>
----
- drivers/spi/coldfire_edma.c | 261 +++++++++++++++++++++++---------------
- include/asm-m68k/coldfire_edma.h | 9 +-
- include/asm-m68k/mcf5445x_edma.h | 28 +++-
- 3 files changed, 188 insertions(+), 110 deletions(-)
-
---- a/drivers/spi/coldfire_edma.c
-+++ b/drivers/spi/coldfire_edma.c
-@@ -20,76 +20,91 @@
- #include <linux/cdev.h>
- #include <linux/seq_file.h>
- #include <linux/proc_fs.h>
-+#ifdef CONFIG_M54455
- #include <asm/mcf5445x_edma.h>
- #include <asm/mcf5445x_intc.h>
-+#endif /* CONFIG_M54455 */
- #include <asm/coldfire_edma.h>
-
--
--/* callback handler data for each TCD */
-+/*
-+ * Callback handler data for each TCD
-+ */
- struct edma_isr_record {
-- edma_irq_handler irq_handler; /* interrupt handler */
-- edma_error_handler error_handler; /* error interrupt handler */
-- void* dev; /* device used for the channel */
-- int allocated; /* busy flag */
-- spinlock_t *lock; /* spin lock (if needs to be locked in interrupt) */
-- const char* device_id; /* device id string, used in proc file system */
-+ edma_irq_handler irq_handler; /* interrupt handler */
-+ edma_error_handler error_handler; /* error interrupt handler */
-+ void *arg; /* argument to pass back */
-+ int allocated; /* busy flag */
-+ spinlock_t *lock; /* spin lock (optional) */
-+ const char *device_id; /* dev id string, used in procfs */
- };
-
--/* device structure */
-+/*
-+ * Device structure
-+ */
- struct coldfire_edma_dev {
-- struct cdev cdev; /* character device */
-- struct edma_isr_record dma_interrupt_handlers[EDMA_CHANNELS]; /* channel handlers */
-+ struct cdev cdev; /* character device */
-+ struct edma_isr_record dma_interrupt_handlers[EDMA_CHANNELS];
- };
-
- /* allocated major device number */
- static int coldfire_dma_major;
-+
- /* device driver structure */
--static struct coldfire_edma_dev* devp = NULL;
-+static struct coldfire_edma_dev *devp = NULL;
-
- /* device driver file operations */
- struct file_operations coldfire_edma_fops = {
- .owner = THIS_MODULE,
- };
-
--/* eDMA channel interrupt handler */
-+/**
-+ * dmaisr - eDMA channel interrupt handler
-+ * @irq: interrupt number
-+ * @dev_id: argument
-+ */
- static int dmaisr(int irq, void *dev_id)
- {
- int channel = irq - EDMA_INT_CONTROLLER_BASE - EDMA_INT_CHANNEL_BASE;
- int result = IRQ_HANDLED;
-
-- if (devp!=NULL && devp->dma_interrupt_handlers[channel].lock) {
-- spin_lock(devp->dma_interrupt_handlers[channel].lock);
-- }
-+ if ((devp != NULL) &&
-+ (devp->dma_interrupt_handlers[channel].irq_handler)) {
-+ /* call user irq handler */
-+ if (devp->dma_interrupt_handlers[channel].lock)
-+ spin_lock(devp->dma_interrupt_handlers[channel].lock);
-+
-+ result = devp->dma_interrupt_handlers[channel].irq_handler(
-+ channel, devp->dma_interrupt_handlers[channel].arg);
-
-- if (devp!=NULL && devp->dma_interrupt_handlers[channel].irq_handler) {
-- result = devp->dma_interrupt_handlers[channel].irq_handler(channel,
-- devp->dma_interrupt_handlers[channel].dev);
-+ if (devp->dma_interrupt_handlers[channel].lock)
-+ spin_unlock(devp->dma_interrupt_handlers[channel].lock);
- } else {
-+ /* no irq handler so just ack it */
- confirm_edma_interrupt_handled(channel);
-- printk(EDMA_DRIVER_NAME ": No handler for DMA channel %d\n", channel);
-- }
--
-- if (devp!=NULL && devp->dma_interrupt_handlers[channel].lock) {
-- spin_unlock(devp->dma_interrupt_handlers[channel].lock);
-+ printk(EDMA_DRIVER_NAME ": No handler for DMA channel %d\n",
-+ channel);
- }
-
- return result;
- }
-
--/* eDMA error interrupt handler */
-+/**
-+ * dma_error_isr - eDMA error interrupt handler
-+ * @irq: interrupt number
-+ * @dev_id: argument
-+ */
- static int dma_error_isr(int irq, void* dev_id)
- {
- u16 err;
- int i;
-
- err = MCF_EDMA_ERR;
-- for (i=0;i<EDMA_CHANNELS;i++) {
-+ for (i=0; i<EDMA_CHANNELS; i++) {
- if (err & (1<<i)) {
-- if (devp!=NULL && devp->dma_interrupt_handlers[i].error_handler) {
-- devp->dma_interrupt_handlers[i].error_handler(i, devp->dma_interrupt_handlers[i].dev);
-- } else {
-+ if (devp!=NULL && devp->dma_interrupt_handlers[i].error_handler)
-+ devp->dma_interrupt_handlers[i].error_handler(i, devp->dma_interrupt_handlers[i].arg);
-+ else
- printk(KERN_WARNING EDMA_DRIVER_NAME ": DMA error on channel %d\n", i);
-- }
- }
- }
-
-@@ -97,11 +112,26 @@ static int dma_error_isr(int irq, void*
- return IRQ_HANDLED;
- }
-
--/* sets channel parameters */
-+/**
-+ * set_edma_params - Set transfer control descriptor (TCD)
-+ * @channel: channel number
-+ * @source: source address
-+ * @dest: destination address
-+ * @attr: attributes
-+ * @soff: source offset
-+ * @nbytes: number of bytes to be transfered in minor loop
-+ * @slast: last source address adjustment
-+ * @citer: major loop count
-+ * @biter: beginning minor loop count
-+ * @doff: destination offset
-+ * @dlast_sga: last destination address adjustment
-+ * @major_int: generate interrupt after each major loop
-+ * @disable_req: disable DMA request after major loop
-+ */
- void set_edma_params(int channel, u32 source, u32 dest,
-- u32 attr, u32 soff, u32 nbytes, u32 slast,
-- u32 citer, u32 biter, u32 doff, u32 dlast_sga,
-- int major_int, int disable_req)
-+ u32 attr, u32 soff, u32 nbytes, u32 slast,
-+ u32 citer, u32 biter, u32 doff, u32 dlast_sga,
-+ int major_int, int disable_req)
- {
-
- if (channel<0 || channel>EDMA_CHANNELS)
-@@ -117,45 +147,56 @@ void set_edma_params(int channel, u32 so
- MCF_EDMA_TCD_BITER(channel)=MCF_EDMA_TCD_BITER_BITER(biter);
- MCF_EDMA_TCD_DOFF(channel) = MCF_EDMA_TCD_DOFF_DOFF(doff);
- MCF_EDMA_TCD_DLAST_SGA(channel) = MCF_EDMA_TCD_DLAST_SGA_DLAST_SGA(dlast_sga);
-+
- /* interrupt at the end of major loop */
-- if (major_int) {
-+ if (major_int)
- MCF_EDMA_TCD_CSR(channel) |= MCF_EDMA_TCD_CSR_INT_MAJOR;
-- } else {
-+ else
- MCF_EDMA_TCD_CSR(channel) &= ~MCF_EDMA_TCD_CSR_INT_MAJOR;
-- }
-+
- /* disable request at the end of major loop of transfer or not*/
-- if (disable_req) {
-+ if (disable_req)
- MCF_EDMA_TCD_CSR(channel) |= MCF_EDMA_TCD_CSR_D_REQ;
-- } else {
-+ else
- MCF_EDMA_TCD_CSR(channel) &= ~MCF_EDMA_TCD_CSR_D_REQ;
-- }
--
- }
- EXPORT_SYMBOL(set_edma_params);
-
--/* init eDMA controller */
-+/**
-+ * init_edma - Initialize the eDMA controller
-+ */
- void init_edma(void)
- {
- MCF_EDMA_CR = 0;
- }
- EXPORT_SYMBOL(init_edma);
-
--/* request eDMA channel */
-+/**
-+ * request_edma_channel - Request an eDMA channel
-+ * @channel: channel number
-+ * @handler: dma handler
-+ * @error_handler: dma error handler
-+ * @arg: argument to pass back
-+ * @lock: optional spinlock to hold over interrupt
-+ * @device_id: device id
-+ *
-+ * Returns 0 if success or a negative value if failure
-+ */
- int request_edma_channel(int channel,
-- edma_irq_handler handler,
-- edma_error_handler error_handler,
-- void* dev,
-- spinlock_t *lock,
-- const char* device_id )
-+ edma_irq_handler handler,
-+ edma_error_handler error_handler,
-+ void *arg,
-+ spinlock_t *lock,
-+ const char *device_id )
- {
- if (devp!=NULL && channel>=0 && channel<=EDMA_CHANNELS) {
-- if (devp->dma_interrupt_handlers[channel].allocated) {
-+ if (devp->dma_interrupt_handlers[channel].allocated)
- return -EBUSY;
-- }
-+
- devp->dma_interrupt_handlers[channel].allocated = 1;
- devp->dma_interrupt_handlers[channel].irq_handler = handler;
- devp->dma_interrupt_handlers[channel].error_handler = error_handler;
-- devp->dma_interrupt_handlers[channel].dev = dev;
-+ devp->dma_interrupt_handlers[channel].arg = arg;
- devp->dma_interrupt_handlers[channel].lock = lock;
- devp->dma_interrupt_handlers[channel].device_id = device_id;
- return 0;
-@@ -164,16 +205,22 @@ int request_edma_channel(int channel,
- }
- EXPORT_SYMBOL(request_edma_channel);
-
--/* free eDMA channel */
--int free_edma_channel(int channel, void* dev)
-+/**
-+ * free_edma_channel - Free the edma channel
-+ * @channel: channel number
-+ * @arg: argument created with
-+ *
-+ * Returns 0 if success or a negative value if failure
-+ */
-+int free_edma_channel(int channel, void *arg)
- {
- if (devp!=NULL && channel>=0 && channel<=EDMA_CHANNELS) {
- if (devp->dma_interrupt_handlers[channel].allocated) {
-- if (devp->dma_interrupt_handlers[channel].dev != dev) {
-+ if (devp->dma_interrupt_handlers[channel].arg != arg)
- return -EBUSY;
-- }
-+
- devp->dma_interrupt_handlers[channel].allocated = 0;
-- devp->dma_interrupt_handlers[channel].dev = NULL;
-+ devp->dma_interrupt_handlers[channel].arg = NULL;
- devp->dma_interrupt_handlers[channel].irq_handler = NULL;
- devp->dma_interrupt_handlers[channel].error_handler = NULL;
- devp->dma_interrupt_handlers[channel].lock = NULL;
-@@ -184,7 +231,9 @@ int free_edma_channel(int channel, void*
- }
- EXPORT_SYMBOL(free_edma_channel);
-
--/* clean-up device driver allocated resources */
-+/**
-+ * coldfire_edma_cleanup - cleanup driver allocated resources
-+ */
- static void coldfire_edma_cleanup(void)
- {
- dev_t devno;
-@@ -192,13 +241,10 @@ static void coldfire_edma_cleanup(void)
-
- /* free interrupts/memory */
- if (devp) {
-- for (i=0;i<EDMA_CHANNELS;i++)
-- {
-- MCF_INTC0_SIMR = EDMA_INT_CHANNEL_BASE+i;
-- free_irq(EDMA_INT_CHANNEL_BASE+EDMA_INT_CONTROLLER_BASE+i, devp);
-- }
-- MCF_INTC0_SIMR = EDMA_INT_CHANNEL_BASE+EDMA_CHANNELS;
-- free_irq(EDMA_INT_CHANNEL_BASE+EDMA_INT_CONTROLLER_BASE+EDMA_CHANNELS, devp);
-+ for (i=0; i<EDMA_CHANNELS; i++)
-+ free_irq(EDMA_INT_BASE+i, devp);
-+
-+ free_irq(EDMA_INT_BASE+EDMA_INT_ERR, devp);
- cdev_del(&devp->cdev);
- kfree(devp);
- }
-@@ -209,30 +255,42 @@ static void coldfire_edma_cleanup(void)
- }
-
- #ifdef CONFIG_PROC_FS
--/* proc file system support */
-+/*
-+ * proc file system support
-+ */
-
- #define FREE_CHANNEL "free"
- #define DEVICE_UNKNOWN "device unknown"
-
-+/**
-+ * proc_edma_show - print out proc info
-+ * @m: seq_file
-+ * @v:
-+ */
- static int proc_edma_show(struct seq_file *m, void *v)
- {
- int i;
-
-- if (devp==NULL) return 0;
-+ if (devp == NULL)
-+ return 0;
-
- for (i = 0 ; i < EDMA_CHANNELS ; i++) {
- if (devp->dma_interrupt_handlers[i].allocated) {
- if (devp->dma_interrupt_handlers[i].device_id)
-- seq_printf(m, "%2d: %s\n", i, devp->dma_interrupt_handlers[i].device_id);
-+ seq_printf(m, "%2d: %s\n", i, devp->dma_interrupt_handlers[i].device_id);
- else
- seq_printf(m, "%2d: %s\n", i, DEVICE_UNKNOWN);
-- } else {
-+ } else
- seq_printf(m, "%2d: %s\n", i, FREE_CHANNEL);
-- }
- }
- return 0;
- }
-
-+/**
-+ * proc_edma_open - open the proc file
-+ * @inode: inode ptr
-+ * @file: file ptr
-+ */
- static int proc_edma_open(struct inode *inode, struct file *file)
- {
- return single_open(file, proc_edma_show, NULL);
-@@ -245,6 +303,9 @@ static const struct file_operations proc
- .release = single_release,
- };
-
-+/**
-+ * proc_edma_init - initialize proc filesystem
-+ */
- static int __init proc_edma_init(void)
- {
- struct proc_dir_entry *e;
-@@ -258,7 +319,9 @@ static int __init proc_edma_init(void)
-
- #endif
-
--/* initializes device driver */
-+/**
-+ * coldfire_edma_init - eDMA module init
-+ */
- static int __init coldfire_edma_init(void)
- {
- dev_t dev;
-@@ -267,8 +330,9 @@ static int __init coldfire_edma_init(voi
-
- /* allocate free major number */
- result = alloc_chrdev_region(&dev, DMA_DEV_MINOR, 1, EDMA_DRIVER_NAME);
-- if (result<0) {
-- printk(KERN_WARNING EDMA_DRIVER_NAME": can't get major %d\n", result);
-+ if (result < 0) {
-+ printk(KERN_WARNING EDMA_DRIVER_NAME": can't get major %d\n",
-+ result);
- return result;
- }
- coldfire_dma_major = MAJOR(dev);
-@@ -280,71 +344,68 @@ static int __init coldfire_edma_init(voi
- goto fail;
- }
-
-- /* init handlers (no handlers for beggining) */
-- for (i=0;i<EDMA_CHANNELS;i++) {
-+ /* init handlers (no handlers for beginning) */
-+ for (i = 0; i < EDMA_CHANNELS; i++) {
- devp->dma_interrupt_handlers[i].irq_handler = NULL;
- devp->dma_interrupt_handlers[i].error_handler = NULL;
-- devp->dma_interrupt_handlers[i].dev = NULL;
-+ devp->dma_interrupt_handlers[i].arg = NULL;
- devp->dma_interrupt_handlers[i].allocated = 0;
- devp->dma_interrupt_handlers[i].lock = NULL;
- devp->dma_interrupt_handlers[i].device_id = NULL;
- }
-
-- /* register char device */
-+ /* register char device */
- cdev_init(&devp->cdev, &coldfire_edma_fops);
- devp->cdev.owner = THIS_MODULE;
- devp->cdev.ops = &coldfire_edma_fops;
- result = cdev_add(&devp->cdev, dev, 1);
- if (result) {
-- printk(KERN_NOTICE EDMA_DRIVER_NAME": Error %d adding coldfire-dma device\n", result);
-+ printk(KERN_NOTICE EDMA_DRIVER_NAME
-+ ": Error %d adding coldfire-dma device\n", result);
- result = -ENODEV;
- goto fail;
- }
-
- /* request/enable irq for each eDMA channel */
-- for (i=0;i<EDMA_CHANNELS;i++)
-- {
-- result = request_irq(EDMA_INT_CHANNEL_BASE+EDMA_INT_CONTROLLER_BASE+i,
-- dmaisr, SA_INTERRUPT, EDMA_DRIVER_NAME, devp);
-+ for (i = 0; i < EDMA_CHANNELS;i++) {
-+ result = request_irq(EDMA_INT_BASE + i,
-+ dmaisr, IRQF_DISABLED,
-+ EDMA_DRIVER_NAME, devp);
- if (result) {
-- printk(KERN_WARNING EDMA_DRIVER_NAME": Cannot request irq %d\n",
-- EDMA_INT_CHANNEL_BASE+EDMA_INT_CONTROLLER_BASE+i);
-+ printk(KERN_WARNING EDMA_DRIVER_NAME
-+ ": Cannot request irq %d\n",
-+ (EDMA_INT_BASE + EDMA_INT_ERR+i));
- result = -EBUSY;
- goto fail;
- }
--
-- MCF_INTC0_ICR(EDMA_INT_CHANNEL_BASE+i) = EDMA_IRQ_LEVEL;
-- MCF_INTC0_CIMR = EDMA_INT_CHANNEL_BASE+i;
--
- }
-
-- /* request error interrupt */
-- result = request_irq(EDMA_INT_CHANNEL_BASE + EDMA_INT_CONTROLLER_BASE + EDMA_CHANNELS,
-- dma_error_isr, SA_INTERRUPT, EDMA_DRIVER_NAME, devp);
-+ /* request error interrupt */
-+ result = request_irq(EDMA_INT_BASE + EDMA_INT_ERR,
-+ dma_error_isr, IRQF_DISABLED,
-+ EDMA_DRIVER_NAME, devp);
- if (result) {
-- printk(KERN_WARNING EDMA_DRIVER_NAME": Cannot request irq %d\n",
-- EDMA_INT_CHANNEL_BASE+EDMA_INT_CONTROLLER_BASE+EDMA_CHANNELS);
-+ printk(KERN_WARNING EDMA_DRIVER_NAME
-+ ": Cannot request irq %d\n",
-+ (EDMA_INT_BASE + EDMA_INT_ERR));
- result = -EBUSY;
- goto fail;
- }
-
-- /* enable error interrupt in interrupt controller */
-- MCF_INTC0_ICR(EDMA_INT_CHANNEL_BASE+EDMA_CHANNELS) = EDMA_IRQ_LEVEL;
-- MCF_INTC0_CIMR = EDMA_INT_CHANNEL_BASE+EDMA_CHANNELS;
--
- #ifdef CONFIG_PROC_FS
- proc_edma_init();
- #endif
-
- printk(EDMA_DRIVER_NAME ": initialized successfully\n");
--
- return 0;
- fail:
- coldfire_edma_cleanup();
- return result;
--
- }
-
-+/**
-+ * coldfire_edma_exit - eDMA module exit
-+ */
- static void __exit coldfire_edma_exit(void)
- {
- coldfire_edma_cleanup();
-@@ -354,5 +415,5 @@ module_init(coldfire_edma_init);
- module_exit(coldfire_edma_exit);
-
- MODULE_LICENSE("GPL");
--MODULE_AUTHOR("Yaroslav Vinogradov, Freescale Inc.");
--MODULE_DESCRIPTION("eDMA library for Coldfire 5445x");
-+MODULE_AUTHOR("Freescale Semiconductor, Inc.");
-+MODULE_DESCRIPTION("eDMA library for Coldfire M5445x");
---- a/include/asm-m68k/coldfire_edma.h
-+++ b/include/asm-m68k/coldfire_edma.h
-@@ -20,11 +20,14 @@
- #define EDMA_DRIVER_NAME "ColdFire-eDMA"
- #define DMA_DEV_MINOR 1
-
-+#ifdef CONFIG_M54455
- #define EDMA_INT_CHANNEL_BASE 8
- #define EDMA_INT_CONTROLLER_BASE 64
-+#define EDMA_INT_BASE (EDMA_INT_CHANNEL_BASE + \
-+ EDMA_INT_CONTROLLER_BASE)
- #define EDMA_CHANNELS 16
--
--#define EDMA_IRQ_LEVEL 5
-+#define EDMA_INT_ERR 16 /* edma error interrupt */
-+#endif /* CONFIG_M54455 */
-
- typedef irqreturn_t (*edma_irq_handler)(int, void *);
- typedef void (*edma_error_handler)(int, void *);
-@@ -38,7 +41,7 @@ typedef void (*edma_error_handler)(int,
- * nbytes - number of bytes to be transfered in minor loop
- * slast - last source address adjustment
- * citer - major loop count
-- * biter - beggining minor loop count
-+ * biter - begining minor loop count
- * doff - destination offset
- * dlast_sga - last destination address adjustment
- * major_int - generate interrupt after each major loop
---- a/include/asm-m68k/mcf5445x_edma.h
-+++ b/include/asm-m68k/mcf5445x_edma.h
-@@ -11,11 +11,27 @@
- #ifndef __MCF5445X_EDMA_H__
- #define __MCF5445X_EDMA_H__
-
--/*********************************************************************
--*
--* Enhanced DMA (EDMA)
--*
--*********************************************************************/
-+/*
-+ * Enhanced DMA (EDMA)
-+ */
-+
-+/* Channels */
-+#define MCF_EDMA_CHAN_DREQ0 0 /* External DMA request 0 */
-+#define MCF_EDMA_CHAN_DREQ1 1 /* External DMA request 1 */
-+#define MCF_EDMA_CHAN_UART0_RX 2 /* UART0 Receive */
-+#define MCF_EDMA_CHAN_UART0_TX 3 /* UART0 Transmit */
-+#define MCF_EDMA_CHAN_UART1_RX 4 /* UART1 Receive */
-+#define MCF_EDMA_CHAN_UART1_TX 5 /* UART1 Transmit */
-+#define MCF_EDMA_CHAN_UART2_RX 6 /* UART2 Receive */
-+#define MCF_EDMA_CHAN_UART2_TX 7 /* UART2 Transmit */
-+#define MCF_EDMA_CHAN_TIMER0 8 /* Timer 0 / SSI0 Rx */
-+#define MCF_EDMA_CHAN_TIMER1 9 /* Timer 1 / SSI1 Rx */
-+#define MCF_EDMA_CHAN_TIMER2 10 /* Timer 2 / SSI0 Tx */
-+#define MCF_EDMA_CHAN_TIMER3 11 /* Timer 3 / SSI1 Tx */
-+#define MCF_EDMA_CHAN_DSPI_RX 12 /* DSPI Receive */
-+#define MCF_EDMA_CHAN_DSPI_TX 13 /* DSPI Transmit */
-+#define MCF_EDMA_CHAN_ATA_RX 14 /* ATA Receive */
-+#define MCF_EDMA_CHAN_ATA_TX 15 /* ATA Transmit */
-
- /* Register read/write macros */
- #define MCF_EDMA_CR MCF_REG32(0xFC044000)
-@@ -1453,6 +1469,4 @@
- #define MCF_EDMA_TCD15_CSR_LINKCH(x) (((x)&0x003F)<<8)
- #define MCF_EDMA_TCD15_CSR_BWC(x) (((x)&0x0003)<<14)
-
--/********************************************************************/
--
- #endif /* __MCF5445X_EDMA_H__ */
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