MIPS: BCM63xx: Add PCMCIA & Cardbus support.

Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 144 insertions, 0 deletions

diff --git a/arch/mips/bcm63xx/dev-pcmcia.c b/arch/mips/bcm63xx/dev-pcmcia.c
new file mode 100644
index 000000000000..de4d917fd54d
--- /dev/null
+++ b/arch/mips/bcm63xx/dev-pcmcia.c
@@ -0,0 +1,144 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <asm/bootinfo.h>
+#include <linux/platform_device.h>
+#include <bcm63xx_cs.h>
+#include <bcm63xx_cpu.h>
+#include <bcm63xx_dev_pcmcia.h>
+#include <bcm63xx_io.h>
+#include <bcm63xx_regs.h>
+
+static struct resource pcmcia_resources[] = {
+        /* pcmcia registers */
+        {
+                /* start & end filled at runtime */
+                .flags          = IORESOURCE_MEM,
+        },
+
+        /* pcmcia memory zone resources */
+        {
+                .start          = BCM_PCMCIA_COMMON_BASE_PA,
+                .end            = BCM_PCMCIA_COMMON_END_PA,
+                .flags          = IORESOURCE_MEM,
+        },
+        {
+                .start          = BCM_PCMCIA_ATTR_BASE_PA,
+                .end            = BCM_PCMCIA_ATTR_END_PA,
+                .flags          = IORESOURCE_MEM,
+        },
+        {
+                .start          = BCM_PCMCIA_IO_BASE_PA,
+                .end            = BCM_PCMCIA_IO_END_PA,
+                .flags          = IORESOURCE_MEM,
+        },
+
+        /* PCMCIA irq */
+        {
+                /* start filled at runtime */
+                .flags          = IORESOURCE_IRQ,
+        },
+
+        /* declare PCMCIA IO resource also */
+        {
+                .start          = BCM_PCMCIA_IO_BASE_PA,
+                .end            = BCM_PCMCIA_IO_END_PA,
+                .flags          = IORESOURCE_IO,
+        },
+};
+
+static struct bcm63xx_pcmcia_platform_data pd;
+
+static struct platform_device bcm63xx_pcmcia_device = {
+        .name           = "bcm63xx_pcmcia",
+        .id             = 0,
+        .num_resources  = ARRAY_SIZE(pcmcia_resources),
+        .resource       = pcmcia_resources,
+        .dev            = {
+                .platform_data = &pd,
+        },
+};
+
+static int __init config_pcmcia_cs(unsigned int cs,
+                                   u32 base, unsigned int size)
+{
+        int ret;
+
+        ret = bcm63xx_set_cs_status(cs, 0);
+        if (!ret)
+                ret = bcm63xx_set_cs_base(cs, base, size);
+        if (!ret)
+                ret = bcm63xx_set_cs_status(cs, 1);
+        return ret;
+}
+
+static const __initdata struct {
+        unsigned int    cs;
+        unsigned int    base;
+        unsigned int    size;
+} pcmcia_cs[3] = {
+        {
+                .cs     = MPI_CS_PCMCIA_COMMON,
+                .base   = BCM_PCMCIA_COMMON_BASE_PA,
+                .size   = BCM_PCMCIA_COMMON_SIZE
+        },
+        {
+                .cs     = MPI_CS_PCMCIA_ATTR,
+                .base   = BCM_PCMCIA_ATTR_BASE_PA,
+                .size   = BCM_PCMCIA_ATTR_SIZE
+        },
+        {
+                .cs     = MPI_CS_PCMCIA_IO,
+                .base   = BCM_PCMCIA_IO_BASE_PA,
+                .size   = BCM_PCMCIA_IO_SIZE
+        },
+};
+
+int __init bcm63xx_pcmcia_register(void)
+{
+        int ret, i;
+
+        if (!BCMCPU_IS_6348() && !BCMCPU_IS_6358())
+                return 0;
+
+        /* use correct pcmcia ready gpio depending on processor */
+        switch (bcm63xx_get_cpu_id()) {
+        case BCM6348_CPU_ID:
+                pd.ready_gpio = 22;
+                break;
+
+        case BCM6358_CPU_ID:
+                pd.ready_gpio = 18;
+                break;
+
+        default:
+                return -ENODEV;
+        }
+
+        pcmcia_resources[0].start = bcm63xx_regset_address(RSET_PCMCIA);
+        pcmcia_resources[0].end = pcmcia_resources[0].start +
+                RSET_PCMCIA_SIZE - 1;
+        pcmcia_resources[4].start = bcm63xx_get_irq_number(IRQ_PCMCIA);
+
+        /* configure pcmcia chip selects */
+        for (i = 0; i < 3; i++) {
+                ret = config_pcmcia_cs(pcmcia_cs[i].cs,
+                                       pcmcia_cs[i].base,
+                                       pcmcia_cs[i].size);
+                if (ret)
+                        goto out_err;
+        }
+
+        return platform_device_register(&bcm63xx_pcmcia_device);
+
+out_err:
+        printk(KERN_ERR "unable to set pcmcia chip select\n");
+        return ret;
+}