[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>

arch/arm/mach-pxa/include/mach/vpac270.h

@@ -23,4 +23,12 @@
 #define	GPIO52_VPAC270_SD_READONLY	52
 #define	GPIO53_VPAC270_SD_DETECT_N	53
 
+#define	GPIO84_VPAC270_PCMCIA_CD	84
+#define	GPIO35_VPAC270_PCMCIA_RDY	35
+#define	GPIO107_VPAC270_PCMCIA_PPEN	107
+#define	GPIO11_VPAC270_PCMCIA_RESET	11
+#define	GPIO17_VPAC270_CF_CD		17
+#define	GPIO12_VPAC270_CF_RDY		12
+#define	GPIO16_VPAC270_CF_RESET		16
+
 #endif

arch/arm/mach-pxa/vpac270.c

@@ -85,6 +85,26 @@ static unsigned long vpac270_pin_config[] __initdata = {
 	GPIO75_LCD_LCLK,
 	GPIO76_LCD_PCLK,
 	GPIO77_LCD_BIAS,
+
+	/* PCMCIA */
+	GPIO48_nPOE,
+	GPIO49_nPWE,
+	GPIO50_nPIOR,
+	GPIO51_nPIOW,
+	GPIO85_nPCE_1,
+	GPIO54_nPCE_2,
+	GPIO55_nPREG,
+	GPIO57_nIOIS16,
+	GPIO56_nPWAIT,
+	GPIO104_PSKTSEL,
+	GPIO84_GPIO,	/* PCMCIA CD */
+	GPIO35_GPIO,	/* PCMCIA RDY */
+	GPIO107_GPIO,	/* PCMCIA PPEN */
+	GPIO11_GPIO,	/* PCMCIA RESET */
+	GPIO17_GPIO,	/* CF CD */
+	GPIO12_GPIO,	/* CF RDY */
+	GPIO16_GPIO,	/* CF RESET */
+
 };
 
 /******************************************************************************

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

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)
 

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");