[ARM] 5154/1: PalmTX PCMCIA

This patch adds PCMCIA support for PalmTX handheld computer.
There is one chip hard-soldered to slot0, another slot is
not in use and not accessible.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

3 files changed, 121 insertions, 1 deletions

diff --git a/drivers/pcmcia/Kconfig b/drivers/pcmcia/Kconfig
index 1b0eb5aaf650..86dd324c8ce0 100644
--- a/drivers/pcmcia/Kconfig
+++ b/drivers/pcmcia/Kconfig
@@ -219,7 +219,8 @@ config PCMCIA_SA1111
 config PCMCIA_PXA2XX
         tristate "PXA2xx support"
         depends on ARM && ARCH_PXA && PCMCIA
-        depends on ARCH_LUBBOCK || MACH_MAINSTONE || PXA_SHARPSL || MACH_ARMCORE
+        depends on (ARCH_LUBBOCK || MACH_MAINSTONE || PXA_SHARPSL \
+                    || MACH_ARMCORE || ARCH_PXA_PALM)
         help
           Say Y here to include support for the PXA2xx PCMCIA controller
 
diff --git a/drivers/pcmcia/Makefile b/drivers/pcmcia/Makefile
index 6f6478ba7174..8e6dd22e9300 100644
--- a/drivers/pcmcia/Makefile
+++ b/drivers/pcmcia/Makefile
@@ -71,4 +71,5 @@ pxa2xx_cs-$(CONFIG_ARCH_LUBBOCK)		+= pxa2xx_lubbock.o sa1111_generic.o
 pxa2xx_cs-$(CONFIG_MACH_MAINSTONE)              += pxa2xx_mainstone.o
 pxa2xx_cs-$(CONFIG_PXA_SHARPSL)                 += pxa2xx_sharpsl.o
 pxa2xx_cs-$(CONFIG_MACH_ARMCORE)                += pxa2xx_cm_x270.o
+pxa2xx_cs-$(CONFIG_MACH_PALMTX)         += pxa2xx_palmtx.o
 
diff --git a/drivers/pcmcia/pxa2xx_palmtx.c b/drivers/pcmcia/pxa2xx_palmtx.c
new file mode 100644
index 000000000000..4abde190c1f5
--- /dev/null
+++ b/drivers/pcmcia/pxa2xx_palmtx.c
@@ -0,0 +1,118 @@
+/*
+ * linux/drivers/pcmcia/pxa2xx_palmtx.c
+ *
+ * Driver for Palm T|X PCMCIA
+ *
+ * Copyright (C) 2007-2008 Marek Vasut <marek.vasut@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <asm/mach-types.h>
+
+#include <asm/arch/gpio.h>
+#include <asm/arch/palmtx.h>
+
+#include "soc_common.h"
+
+static int palmtx_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
+{
+        skt->irq = IRQ_GPIO(GPIO_NR_PALMTX_PCMCIA_READY);
+        return 0;
+}
+
+static void palmtx_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
+{
+}
+
+static void palmtx_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
+                                        struct pcmcia_state *state)
+{
+        state->detect = 1; /* always inserted */
+        state->ready  = !!gpio_get_value(GPIO_NR_PALMTX_PCMCIA_READY);
+        state->bvd1   = 1;
+        state->bvd2   = 1;
+        state->wrprot = 0;
+        state->vs_3v  = 1;
+        state->vs_Xv  = 0;
+}
+
+static int
+palmtx_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
+                                const socket_state_t *state)
+{
+        gpio_set_value(GPIO_NR_PALMTX_PCMCIA_POWER1, 1);
+        gpio_set_value(GPIO_NR_PALMTX_PCMCIA_POWER2, 1);
+        gpio_set_value(GPIO_NR_PALMTX_PCMCIA_RESET,
+                        !!(state->flags & SS_RESET));
+
+        return 0;
+}
+
+static void palmtx_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
+{
+}
+
+static void palmtx_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
+{
+}
+
+static struct pcmcia_low_level palmtx_pcmcia_ops = {
+        .owner                  = THIS_MODULE,
+
+        .first                  = 0,
+        .nr                     = 1,
+
+        .hw_init                = palmtx_pcmcia_hw_init,
+        .hw_shutdown            = palmtx_pcmcia_hw_shutdown,
+
+        .socket_state           = palmtx_pcmcia_socket_state,
+        .configure_socket       = palmtx_pcmcia_configure_socket,
+
+        .socket_init            = palmtx_pcmcia_socket_init,
+        .socket_suspend         = palmtx_pcmcia_socket_suspend,
+};
+
+static struct platform_device *palmtx_pcmcia_device;
+
+static int __init palmtx_pcmcia_init(void)
+{
+        int ret;
+
+        if (!machine_is_palmtx())
+                return -ENODEV;
+
+        palmtx_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
+        if (!palmtx_pcmcia_device)
+                return -ENOMEM;
+
+        ret = platform_device_add_data(palmtx_pcmcia_device, &palmtx_pcmcia_ops,
+                                        sizeof(palmtx_pcmcia_ops));
+
+        if (!ret)
+                ret = platform_device_add(palmtx_pcmcia_device);
+
+        if (ret)
+                platform_device_put(palmtx_pcmcia_device);
+
+        return ret;
+}
+
+static void __exit palmtx_pcmcia_exit(void)
+{
+        platform_device_unregister(palmtx_pcmcia_device);
+}
+
+fs_initcall(palmtx_pcmcia_init);
+module_exit(palmtx_pcmcia_exit);
+
+MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
+MODULE_DESCRIPTION("PCMCIA support for Palm T|X");
+MODULE_ALIAS("platform:pxa2xx-pcmcia");
+MODULE_LICENSE("GPL");