[ARM] pxa: add support for Voipac PXA270 PCMCIA

PCMCIA support for Voipac PXA270

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

3 files changed, 232 insertions, 1 deletions

diff --git a/drivers/pcmcia/Kconfig b/drivers/pcmcia/Kconfig
index d189e4743e69..a44733d44ca1 100644
--- a/drivers/pcmcia/Kconfig
+++ b/drivers/pcmcia/Kconfig
@@ -234,7 +234,8 @@ config PCMCIA_PXA2XX
         depends on ARM && ARCH_PXA && PCMCIA
         depends on (ARCH_LUBBOCK || MACH_MAINSTONE || PXA_SHARPSL \
                     || MACH_ARMCORE || ARCH_PXA_PALM || TRIZEPS_PCMCIA \
-                    || ARCOM_PCMCIA || ARCH_PXA_ESERIES || MACH_STARGATE2)
+                    || ARCOM_PCMCIA || ARCH_PXA_ESERIES || MACH_STARGATE2 \
+                    || MACH_VPAC270)
         select PCMCIA_SOC_COMMON
         help
           Say Y here to include support for the PXA2xx PCMCIA controller
diff --git a/drivers/pcmcia/Makefile b/drivers/pcmcia/Makefile
index 381b031d9d75..4dae3613c458 100644
--- a/drivers/pcmcia/Makefile
+++ b/drivers/pcmcia/Makefile
@@ -66,6 +66,7 @@ pxa2xx-obj-$(CONFIG_MACH_PALMTC)		+= pxa2xx_palmtc.o
 pxa2xx-obj-$(CONFIG_MACH_PALMLD)                += pxa2xx_palmld.o
 pxa2xx-obj-$(CONFIG_MACH_E740)                  += pxa2xx_e740.o
 pxa2xx-obj-$(CONFIG_MACH_STARGATE2)             += pxa2xx_stargate2.o
+pxa2xx-obj-$(CONFIG_MACH_VPAC270)               += pxa2xx_vpac270.o
 
 obj-$(CONFIG_PCMCIA_PXA2XX)                     += pxa2xx_base.o $(pxa2xx-obj-y)
 
diff --git a/drivers/pcmcia/pxa2xx_vpac270.c b/drivers/pcmcia/pxa2xx_vpac270.c
new file mode 100644
index 000000000000..55627eccee8e
--- /dev/null
+++ b/drivers/pcmcia/pxa2xx_vpac270.c
@@ -0,0 +1,229 @@
+/*
+ * linux/drivers/pcmcia/pxa2xx_vpac270.c
+ *
+ * Driver for Voipac PXA270 PCMCIA and CF sockets
+ *
+ * Copyright (C) 2010
+ * 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 <mach/gpio.h>
+#include <mach/vpac270.h>
+
+#include "soc_common.h"
+
+static struct pcmcia_irqs cd_irqs[] = {
+        {
+                .sock = 0,
+                .irq  = IRQ_GPIO(GPIO84_VPAC270_PCMCIA_CD),
+                .str  = "PCMCIA CD"
+        },
+        {
+                .sock = 1,
+                .irq  = IRQ_GPIO(GPIO17_VPAC270_CF_CD),
+                .str  = "CF CD"
+        },
+};
+
+static int vpac270_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
+{
+        int ret;
+
+        if (skt->nr == 0) {
+                ret = gpio_request(GPIO84_VPAC270_PCMCIA_CD, "PCMCIA CD");
+                if (ret)
+                        goto err1;
+                ret = gpio_direction_input(GPIO84_VPAC270_PCMCIA_CD);
+                if (ret)
+                        goto err2;
+
+                ret = gpio_request(GPIO35_VPAC270_PCMCIA_RDY, "PCMCIA RDY");
+                if (ret)
+                        goto err2;
+                ret = gpio_direction_input(GPIO35_VPAC270_PCMCIA_RDY);
+                if (ret)
+                        goto err3;
+
+                ret = gpio_request(GPIO107_VPAC270_PCMCIA_PPEN, "PCMCIA PPEN");
+                if (ret)
+                        goto err3;
+                ret = gpio_direction_output(GPIO107_VPAC270_PCMCIA_PPEN, 0);
+                if (ret)
+                        goto err4;
+
+                ret = gpio_request(GPIO11_VPAC270_PCMCIA_RESET, "PCMCIA RESET");
+                if (ret)
+                        goto err4;
+                ret = gpio_direction_output(GPIO11_VPAC270_PCMCIA_RESET, 0);
+                if (ret)
+                        goto err5;
+
+                skt->socket.pci_irq = gpio_to_irq(GPIO35_VPAC270_PCMCIA_RDY);
+
+                return soc_pcmcia_request_irqs(skt, &cd_irqs[0], 1);
+
+err5:
+                gpio_free(GPIO11_VPAC270_PCMCIA_RESET);
+err4:
+                gpio_free(GPIO107_VPAC270_PCMCIA_PPEN);
+err3:
+                gpio_free(GPIO35_VPAC270_PCMCIA_RDY);
+err2:
+                gpio_free(GPIO84_VPAC270_PCMCIA_CD);
+err1:
+                return ret;
+
+        } else {
+                ret = gpio_request(GPIO17_VPAC270_CF_CD, "CF CD");
+                if (ret)
+                        goto err6;
+                ret = gpio_direction_input(GPIO17_VPAC270_CF_CD);
+                if (ret)
+                        goto err7;
+
+                ret = gpio_request(GPIO12_VPAC270_CF_RDY, "CF RDY");
+                if (ret)
+                        goto err7;
+                ret = gpio_direction_input(GPIO12_VPAC270_CF_RDY);
+                if (ret)
+                        goto err8;
+
+                ret = gpio_request(GPIO16_VPAC270_CF_RESET, "CF RESET");
+                if (ret)
+                        goto err8;
+                ret = gpio_direction_output(GPIO16_VPAC270_CF_RESET, 0);
+                if (ret)
+                        goto err9;
+
+                skt->socket.pci_irq = gpio_to_irq(GPIO12_VPAC270_CF_RDY);
+
+                return soc_pcmcia_request_irqs(skt, &cd_irqs[1], 1);
+
+err9:
+                gpio_free(GPIO16_VPAC270_CF_RESET);
+err8:
+                gpio_free(GPIO12_VPAC270_CF_RDY);
+err7:
+                gpio_free(GPIO17_VPAC270_CF_CD);
+err6:
+                return ret;
+
+        }
+}
+
+static void vpac270_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
+{
+        gpio_free(GPIO11_VPAC270_PCMCIA_RESET);
+        gpio_free(GPIO107_VPAC270_PCMCIA_PPEN);
+        gpio_free(GPIO35_VPAC270_PCMCIA_RDY);
+        gpio_free(GPIO84_VPAC270_PCMCIA_CD);
+        gpio_free(GPIO16_VPAC270_CF_RESET);
+        gpio_free(GPIO12_VPAC270_CF_RDY);
+        gpio_free(GPIO17_VPAC270_CF_CD);
+}
+
+static void vpac270_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
+                                        struct pcmcia_state *state)
+{
+        if (skt->nr == 0) {
+                state->detect = !gpio_get_value(GPIO84_VPAC270_PCMCIA_CD);
+                state->ready  = !!gpio_get_value(GPIO35_VPAC270_PCMCIA_RDY);
+        } else {
+                state->detect = !gpio_get_value(GPIO17_VPAC270_CF_CD);
+                state->ready  = !!gpio_get_value(GPIO12_VPAC270_CF_RDY);
+        }
+        state->bvd1   = 1;
+        state->bvd2   = 1;
+        state->wrprot = 0;
+        state->vs_3v  = 1;
+        state->vs_Xv  = 0;
+}
+
+static int
+vpac270_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
+                                const socket_state_t *state)
+{
+        if (skt->nr == 0) {
+                gpio_set_value(GPIO11_VPAC270_PCMCIA_RESET,
+                        (state->flags & SS_RESET));
+                gpio_set_value(GPIO107_VPAC270_PCMCIA_PPEN,
+                        !(state->Vcc == 33 || state->Vcc == 50));
+        } else {
+                gpio_set_value(GPIO16_VPAC270_CF_RESET,
+                        (state->flags & SS_RESET));
+        }
+
+        return 0;
+}
+
+static void vpac270_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
+{
+}
+
+static void vpac270_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
+{
+}
+
+static struct pcmcia_low_level vpac270_pcmcia_ops = {
+        .owner                  = THIS_MODULE,
+
+        .first                  = 0,
+        .nr                     = 2,
+
+        .hw_init                = vpac270_pcmcia_hw_init,
+        .hw_shutdown            = vpac270_pcmcia_hw_shutdown,
+
+        .socket_state           = vpac270_pcmcia_socket_state,
+        .configure_socket       = vpac270_pcmcia_configure_socket,
+
+        .socket_init            = vpac270_pcmcia_socket_init,
+        .socket_suspend         = vpac270_pcmcia_socket_suspend,
+};
+
+static struct platform_device *vpac270_pcmcia_device;
+
+static int __init vpac270_pcmcia_init(void)
+{
+        int ret;
+
+        if (!machine_is_vpac270())
+                return -ENODEV;
+
+        vpac270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
+        if (!vpac270_pcmcia_device)
+                return -ENOMEM;
+
+        ret = platform_device_add_data(vpac270_pcmcia_device,
+                &vpac270_pcmcia_ops, sizeof(vpac270_pcmcia_ops));
+
+        if (!ret)
+                ret = platform_device_add(vpac270_pcmcia_device);
+
+        if (ret)
+                platform_device_put(vpac270_pcmcia_device);
+
+        return ret;
+}
+
+static void __exit vpac270_pcmcia_exit(void)
+{
+        platform_device_unregister(vpac270_pcmcia_device);
+}
+
+module_init(vpac270_pcmcia_init);
+module_exit(vpac270_pcmcia_exit);
+
+MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
+MODULE_DESCRIPTION("PCMCIA support for Voipac PXA270");
+MODULE_ALIAS("platform:pxa2xx-pcmcia");
+MODULE_LICENSE("GPL");