diff options
Diffstat (limited to 'package/linux/kernel-source/drivers/pcmcia/bcm4710_pcmcia.c')
| -rw-r--r-- | package/linux/kernel-source/drivers/pcmcia/bcm4710_pcmcia.c | 266 |
1 files changed, 266 insertions, 0 deletions
diff --git a/package/linux/kernel-source/drivers/pcmcia/bcm4710_pcmcia.c b/package/linux/kernel-source/drivers/pcmcia/bcm4710_pcmcia.c new file mode 100644 index 0000000000..6e3da040c8 --- /dev/null +++ b/package/linux/kernel-source/drivers/pcmcia/bcm4710_pcmcia.c @@ -0,0 +1,266 @@ +/* + * BCM4710 specific pcmcia routines. + * + * Copyright 2004, Broadcom Corporation + * All Rights Reserved. + * + * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY + * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM + * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS + * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE. + * + * $Id$ + */ +#include <linux/module.h> +#include <linux/init.h> +#include <linux/config.h> +#include <linux/delay.h> +#include <linux/ioport.h> +#include <linux/kernel.h> +#include <linux/tqueue.h> +#include <linux/timer.h> +#include <linux/mm.h> +#include <linux/proc_fs.h> +#include <linux/version.h> +#include <linux/types.h> +#include <linux/pci.h> + +#include <pcmcia/version.h> +#include <pcmcia/cs_types.h> +#include <pcmcia/cs.h> +#include <pcmcia/ss.h> +#include <pcmcia/bulkmem.h> +#include <pcmcia/cistpl.h> +#include <pcmcia/bus_ops.h> +#include "cs_internal.h" + +#include <asm/io.h> +#include <asm/irq.h> +#include <asm/system.h> + + +#include <typedefs.h> +#include <bcmdevs.h> +#include <bcm4710.h> +#include <sbconfig.h> +#include <sbextif.h> + +#include "bcm4710pcmcia.h" + +/* Use a static var for irq dev_id */ +static int bcm47xx_pcmcia_dev_id; + +/* Do we think we have a card or not? */ +static int bcm47xx_pcmcia_present = 0; + + +static void bcm4710_pcmcia_reset(void) +{ + extifregs_t *eir; + unsigned long s; + uint32 out0, out1, outen; + + + eir = (extifregs_t *) ioremap_nocache(BCM4710_REG_EXTIF, sizeof(extifregs_t)); + + save_and_cli(s); + + /* Use gpio7 to reset the pcmcia slot */ + outen = readl(&eir->gpio[0].outen); + outen |= BCM47XX_PCMCIA_RESET; + out0 = readl(&eir->gpio[0].out); + out0 &= ~(BCM47XX_PCMCIA_RESET); + out1 = out0 | BCM47XX_PCMCIA_RESET; + + writel(out0, &eir->gpio[0].out); + writel(outen, &eir->gpio[0].outen); + mdelay(1); + writel(out1, &eir->gpio[0].out); + mdelay(1); + writel(out0, &eir->gpio[0].out); + + restore_flags(s); +} + + +static int bcm4710_pcmcia_init(struct pcmcia_init *init) +{ + struct pci_dev *pdev; + extifregs_t *eir; + uint32 outen, intp, intm, tmp; + uint16 *attrsp; + int rc = 0, i; + extern unsigned long bcm4710_cpu_cycle; + + + if (!(pdev = pci_find_device(VENDOR_BROADCOM, SB_EXTIF, NULL))) { + printk(KERN_ERR "bcm4710_pcmcia: extif not found\n"); + return -ENODEV; + } + eir = (extifregs_t *) ioremap_nocache(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); + + /* Initialize the pcmcia i/f: 16bit no swap */ + writel(CF_EM_PCMCIA | CF_DS | CF_EN, &eir->pcmcia_config); + +#ifdef notYet + + /* Set the timing for memory accesses */ + tmp = (19 / bcm4710_cpu_cycle) << 24; /* W3 = 10nS */ + tmp = tmp | ((29 / bcm4710_cpu_cycle) << 16); /* W2 = 20nS */ + tmp = tmp | ((109 / bcm4710_cpu_cycle) << 8); /* W1 = 100nS */ + tmp = tmp | (129 / bcm4710_cpu_cycle); /* W0 = 120nS */ + writel(tmp, &eir->pcmcia_memwait); /* 0x01020a0c for a 100Mhz clock */ + + /* Set the timing for I/O accesses */ + tmp = (19 / bcm4710_cpu_cycle) << 24; /* W3 = 10nS */ + tmp = tmp | ((29 / bcm4710_cpu_cycle) << 16); /* W2 = 20nS */ + tmp = tmp | ((109 / bcm4710_cpu_cycle) << 8); /* W1 = 100nS */ + tmp = tmp | (129 / bcm4710_cpu_cycle); /* W0 = 120nS */ + writel(tmp, &eir->pcmcia_iowait); /* 0x01020a0c for a 100Mhz clock */ + + /* Set the timing for attribute accesses */ + tmp = (19 / bcm4710_cpu_cycle) << 24; /* W3 = 10nS */ + tmp = tmp | ((29 / bcm4710_cpu_cycle) << 16); /* W2 = 20nS */ + tmp = tmp | ((109 / bcm4710_cpu_cycle) << 8); /* W1 = 100nS */ + tmp = tmp | (129 / bcm4710_cpu_cycle); /* W0 = 120nS */ + writel(tmp, &eir->pcmcia_attrwait); /* 0x01020a0c for a 100Mhz clock */ + +#endif + /* Make sure gpio0 and gpio5 are inputs */ + outen = readl(&eir->gpio[0].outen); + outen &= ~(BCM47XX_PCMCIA_WP | BCM47XX_PCMCIA_STSCHG | BCM47XX_PCMCIA_RESET); + writel(outen, &eir->gpio[0].outen); + + /* Issue a reset to the pcmcia socket */ + bcm4710_pcmcia_reset(); + +#ifdef DO_BCM47XX_PCMCIA_INTERRUPTS + /* Setup gpio5 to be the STSCHG interrupt */ + intp = readl(&eir->gpiointpolarity); + writel(intp | BCM47XX_PCMCIA_STSCHG, &eir->gpiointpolarity); /* Active low */ + intm = readl(&eir->gpiointmask); + writel(intm | BCM47XX_PCMCIA_STSCHG, &eir->gpiointmask); /* Enable it */ +#endif + + DEBUG(2, "bcm4710_pcmcia after reset:\n"); + DEBUG(2, "\textstatus\t= 0x%08x:\n", readl(&eir->extstatus)); + DEBUG(2, "\tpcmcia_config\t= 0x%08x:\n", readl(&eir->pcmcia_config)); + DEBUG(2, "\tpcmcia_memwait\t= 0x%08x:\n", readl(&eir->pcmcia_memwait)); + DEBUG(2, "\tpcmcia_attrwait\t= 0x%08x:\n", readl(&eir->pcmcia_attrwait)); + DEBUG(2, "\tpcmcia_iowait\t= 0x%08x:\n", readl(&eir->pcmcia_iowait)); + DEBUG(2, "\tgpioin\t\t= 0x%08x:\n", readl(&eir->gpioin)); + DEBUG(2, "\tgpio_outen0\t= 0x%08x:\n", readl(&eir->gpio[0].outen)); + DEBUG(2, "\tgpio_out0\t= 0x%08x:\n", readl(&eir->gpio[0].out)); + DEBUG(2, "\tgpiointpolarity\t= 0x%08x:\n", readl(&eir->gpiointpolarity)); + DEBUG(2, "\tgpiointmask\t= 0x%08x:\n", readl(&eir->gpiointmask)); + +#ifdef DO_BCM47XX_PCMCIA_INTERRUPTS + /* Request pcmcia interrupt */ + rc = request_irq(BCM47XX_PCMCIA_IRQ, init->handler, SA_INTERRUPT, + "PCMCIA Interrupt", &bcm47xx_pcmcia_dev_id); +#endif + + attrsp = (uint16 *)ioremap_nocache(EXTIF_PCMCIA_CFGBASE(BCM4710_EXTIF), 0x1000); + tmp = readw(&attrsp[0]); + DEBUG(2, "\tattr[0] = 0x%04x\n", tmp); + if ((tmp == 0x7fff) || (tmp == 0x7f00)) { + bcm47xx_pcmcia_present = 0; + } else { + bcm47xx_pcmcia_present = 1; + } + + /* There's only one socket */ + return 1; +} + +static int bcm4710_pcmcia_shutdown(void) +{ + extifregs_t *eir; + uint32 intm; + + eir = (extifregs_t *) ioremap_nocache(BCM4710_REG_EXTIF, sizeof(extifregs_t)); + + /* Disable the pcmcia i/f */ + writel(0, &eir->pcmcia_config); + + /* Reset gpio's */ + intm = readl(&eir->gpiointmask); + writel(intm & ~BCM47XX_PCMCIA_STSCHG, &eir->gpiointmask); /* Disable it */ + + free_irq(BCM47XX_PCMCIA_IRQ, &bcm47xx_pcmcia_dev_id); + + return 0; +} + +static int +bcm4710_pcmcia_socket_state(unsigned sock, struct pcmcia_state *state) +{ + extifregs_t *eir; + + eir = (extifregs_t *) ioremap_nocache(BCM4710_REG_EXTIF, sizeof(extifregs_t)); + + + if (sock != 0) { + printk(KERN_ERR "bcm4710 socket_state bad sock %d\n", sock); + return -1; + } + + if (bcm47xx_pcmcia_present) { + state->detect = 1; + state->ready = 1; + state->bvd1 = 1; + state->bvd2 = 1; + state->wrprot = (readl(&eir->gpioin) & BCM47XX_PCMCIA_WP) == BCM47XX_PCMCIA_WP; + state->vs_3v = 0; + state->vs_Xv = 0; + } else { + state->detect = 0; + state->ready = 0; + } + + return 1; +} + + +static int bcm4710_pcmcia_get_irq_info(struct pcmcia_irq_info *info) +{ + if (info->sock >= BCM47XX_PCMCIA_MAX_SOCK) return -1; + + info->irq = BCM47XX_PCMCIA_IRQ; + + return 0; +} + + +static int +bcm4710_pcmcia_configure_socket(const struct pcmcia_configure *configure) +{ + if (configure->sock >= BCM47XX_PCMCIA_MAX_SOCK) return -1; + + + DEBUG(2, "Vcc %dV Vpp %dV output %d speaker %d reset %d\n", configure->vcc, + configure->vpp, configure->output, configure->speaker, configure->reset); + + if ((configure->vcc != 50) || (configure->vpp != 50)) { + printk("%s: bad Vcc/Vpp (%d:%d)\n", __FUNCTION__, configure->vcc, + configure->vpp); + } + + if (configure->reset) { + /* Issue a reset to the pcmcia socket */ + DEBUG(1, "%s: Reseting socket\n", __FUNCTION__); + bcm4710_pcmcia_reset(); + } + + + return 0; +} + +struct pcmcia_low_level bcm4710_pcmcia_ops = { + bcm4710_pcmcia_init, + bcm4710_pcmcia_shutdown, + bcm4710_pcmcia_socket_state, + bcm4710_pcmcia_get_irq_info, + bcm4710_pcmcia_configure_socket +}; + |