145 lines
3 KiB
C
145 lines
3 KiB
C
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/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
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*/
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <asm/bootinfo.h>
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#include <linux/platform_device.h>
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#include <bcm63xx_cs.h>
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#include <bcm63xx_cpu.h>
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#include <bcm63xx_dev_pcmcia.h>
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#include <bcm63xx_io.h>
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#include <bcm63xx_regs.h>
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static struct resource pcmcia_resources[] = {
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/* pcmcia registers */
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{
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/* start & end filled at runtime */
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.flags = IORESOURCE_MEM,
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},
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/* pcmcia memory zone resources */
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{
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.start = BCM_PCMCIA_COMMON_BASE_PA,
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.end = BCM_PCMCIA_COMMON_END_PA,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = BCM_PCMCIA_ATTR_BASE_PA,
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.end = BCM_PCMCIA_ATTR_END_PA,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = BCM_PCMCIA_IO_BASE_PA,
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.end = BCM_PCMCIA_IO_END_PA,
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.flags = IORESOURCE_MEM,
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},
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/* PCMCIA irq */
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{
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/* start filled at runtime */
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.flags = IORESOURCE_IRQ,
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},
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/* declare PCMCIA IO resource also */
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{
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.start = BCM_PCMCIA_IO_BASE_PA,
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.end = BCM_PCMCIA_IO_END_PA,
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.flags = IORESOURCE_IO,
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},
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};
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static struct bcm63xx_pcmcia_platform_data pd;
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static struct platform_device bcm63xx_pcmcia_device = {
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.name = "bcm63xx_pcmcia",
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.id = 0,
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.num_resources = ARRAY_SIZE(pcmcia_resources),
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.resource = pcmcia_resources,
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.dev = {
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.platform_data = &pd,
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},
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};
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static int __init config_pcmcia_cs(unsigned int cs,
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u32 base, unsigned int size)
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{
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int ret;
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ret = bcm63xx_set_cs_status(cs, 0);
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if (!ret)
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ret = bcm63xx_set_cs_base(cs, base, size);
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if (!ret)
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ret = bcm63xx_set_cs_status(cs, 1);
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return ret;
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}
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static const struct {
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unsigned int cs;
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unsigned int base;
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unsigned int size;
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} pcmcia_cs[3] __initconst = {
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{
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.cs = MPI_CS_PCMCIA_COMMON,
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.base = BCM_PCMCIA_COMMON_BASE_PA,
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.size = BCM_PCMCIA_COMMON_SIZE
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},
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{
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.cs = MPI_CS_PCMCIA_ATTR,
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.base = BCM_PCMCIA_ATTR_BASE_PA,
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.size = BCM_PCMCIA_ATTR_SIZE
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},
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{
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.cs = MPI_CS_PCMCIA_IO,
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.base = BCM_PCMCIA_IO_BASE_PA,
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.size = BCM_PCMCIA_IO_SIZE
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},
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};
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int __init bcm63xx_pcmcia_register(void)
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{
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int ret, i;
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if (!BCMCPU_IS_6348() && !BCMCPU_IS_6358())
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return 0;
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/* use correct pcmcia ready gpio depending on processor */
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switch (bcm63xx_get_cpu_id()) {
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case BCM6348_CPU_ID:
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pd.ready_gpio = 22;
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break;
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case BCM6358_CPU_ID:
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pd.ready_gpio = 18;
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break;
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default:
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return -ENODEV;
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}
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pcmcia_resources[0].start = bcm63xx_regset_address(RSET_PCMCIA);
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pcmcia_resources[0].end = pcmcia_resources[0].start +
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RSET_PCMCIA_SIZE - 1;
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pcmcia_resources[4].start = bcm63xx_get_irq_number(IRQ_PCMCIA);
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/* configure pcmcia chip selects */
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for (i = 0; i < 3; i++) {
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ret = config_pcmcia_cs(pcmcia_cs[i].cs,
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pcmcia_cs[i].base,
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pcmcia_cs[i].size);
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if (ret)
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goto out_err;
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}
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return platform_device_register(&bcm63xx_pcmcia_device);
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out_err:
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pr_err("unable to set pcmcia chip select\n");
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return ret;
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}
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