[PATCH 02/11] ARM: pxa: Toradex Colibri PXA270 CF support

Marek Vasut marek.vasut at gmail.com
Wed Sep 15 22:32:53 EDT 2010


This driver also contains structures to eventually support PXA320. This is
planned to be added in a later patch.

Signed-off-by: Marek Vasut <marek.vasut at gmail.com>
Acked-by: Daniel Mack <daniel at caiaq.de>
---
 arch/arm/mach-pxa/colibri-pxa270-evalboard.c |   18 ++
 drivers/pcmcia/Kconfig                       |    2 +-
 drivers/pcmcia/Makefile                      |    1 +
 drivers/pcmcia/pxa2xx_colibri.c              |  214 ++++++++++++++++++++++++++
 4 files changed, 234 insertions(+), 1 deletions(-)
 create mode 100644 drivers/pcmcia/pxa2xx_colibri.c

diff --git a/arch/arm/mach-pxa/colibri-pxa270-evalboard.c b/arch/arm/mach-pxa/colibri-pxa270-evalboard.c
index 0f3b632..6177ff5 100644
--- a/arch/arm/mach-pxa/colibri-pxa270-evalboard.c
+++ b/arch/arm/mach-pxa/colibri-pxa270-evalboard.c
@@ -51,6 +51,24 @@ static mfp_cfg_t colibri_pxa270_evalboard_pin_config[] __initdata = {
 	GPIO89_USBH1_PEN,
 	GPIO119_USBH2_PWR,
 	GPIO120_USBH2_PEN,
+
+	/* PCMCIA */
+	GPIO85_nPCE_1,
+	GPIO54_nPCE_2,
+	GPIO55_nPREG,
+	GPIO50_nPIOR,
+	GPIO51_nPIOW,
+	GPIO49_nPWE,
+	GPIO48_nPOE,
+	GPIO57_nIOIS16,
+	GPIO56_nPWAIT,
+	GPIO104_PSKTSEL,
+	GPIO53_GPIO,	/* RESET */
+	GPIO83_GPIO,	/* BVD1 */
+	GPIO82_GPIO,	/* BVD2 */
+	GPIO1_GPIO,	/* READY */
+	GPIO84_GPIO,	/* DETECT */
+	GPIO107_GPIO,	/* PPEN */
 };
 
 /******************************************************************************
diff --git a/drivers/pcmcia/Kconfig b/drivers/pcmcia/Kconfig
index c80a7a6..e9acf03 100644
--- a/drivers/pcmcia/Kconfig
+++ b/drivers/pcmcia/Kconfig
@@ -215,7 +215,7 @@ config PCMCIA_PXA2XX
 	depends on (ARCH_LUBBOCK || MACH_MAINSTONE || PXA_SHARPSL \
 		    || MACH_ARMCORE || ARCH_PXA_PALM || TRIZEPS_PCMCIA \
 		    || ARCOM_PCMCIA || ARCH_PXA_ESERIES || MACH_STARGATE2 \
-		    || MACH_VPAC270 || MACH_BALLOON3)
+		    || MACH_VPAC270 || MACH_BALLOON3 || MACH_COLIBRI)
 	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 8d9386a..2fee7ef 100644
--- a/drivers/pcmcia/Makefile
+++ b/drivers/pcmcia/Makefile
@@ -70,6 +70,7 @@ pxa2xx-obj-$(CONFIG_MACH_E740)			+= pxa2xx_e740.o
 pxa2xx-obj-$(CONFIG_MACH_STARGATE2)		+= pxa2xx_stargate2.o
 pxa2xx-obj-$(CONFIG_MACH_VPAC270)		+= pxa2xx_vpac270.o
 pxa2xx-obj-$(CONFIG_MACH_BALLOON3)		+= pxa2xx_balloon3.o
+pxa2xx-obj-$(CONFIG_MACH_COLIBRI)		+= pxa2xx_colibri.o
 
 obj-$(CONFIG_PCMCIA_PXA2XX)			+= pxa2xx_base.o $(pxa2xx-obj-y)
 
diff --git a/drivers/pcmcia/pxa2xx_colibri.c b/drivers/pcmcia/pxa2xx_colibri.c
new file mode 100644
index 0000000..4ed876c
--- /dev/null
+++ b/drivers/pcmcia/pxa2xx_colibri.c
@@ -0,0 +1,214 @@
+/*
+ * linux/drivers/pcmcia/pxa2xx_colibri.c
+ *
+ * Driver for Toradex Colibri PXA270 CF socket
+ *
+ * Copyright (C) 2010 Marek Vasut <marek.vasut at 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 <linux/delay.h>
+#include <linux/gpio.h>
+
+#include <asm/mach-types.h>
+
+#include "soc_common.h"
+
+#define	COLIBRI270_RESET_GPIO	53
+#define	COLIBRI270_PPEN_GPIO	107
+#define	COLIBRI270_BVD1_GPIO	83
+#define	COLIBRI270_BVD2_GPIO	82
+#define	COLIBRI270_DETECT_GPIO	84
+#define	COLIBRI270_READY_GPIO	1
+
+static struct {
+	int	reset_gpio;
+	int	ppen_gpio;
+	int	bvd1_gpio;
+	int	bvd2_gpio;
+	int	detect_gpio;
+	int	ready_gpio;
+} colibri_pcmcia_gpio;
+
+static struct pcmcia_irqs colibri_irqs[] = {
+	{
+		.sock = 0,
+		.str  = "PCMCIA CD"
+	},
+};
+
+static int colibri_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
+{
+	int ret;
+
+	ret = gpio_request(colibri_pcmcia_gpio.detect_gpio, "DETECT");
+	if (ret)
+		goto err1;
+	ret = gpio_direction_input(colibri_pcmcia_gpio.detect_gpio);
+	if (ret)
+		goto err2;
+
+	ret = gpio_request(colibri_pcmcia_gpio.ready_gpio, "READY");
+	if (ret)
+		goto err2;
+	ret = gpio_direction_input(colibri_pcmcia_gpio.ready_gpio);
+	if (ret)
+		goto err3;
+
+	ret = gpio_request(colibri_pcmcia_gpio.bvd1_gpio, "BVD1");
+	if (ret)
+		goto err3;
+	ret = gpio_direction_input(colibri_pcmcia_gpio.bvd1_gpio);
+	if (ret)
+		goto err4;
+
+	ret = gpio_request(colibri_pcmcia_gpio.bvd2_gpio, "BVD2");
+	if (ret)
+		goto err4;
+	ret = gpio_direction_input(colibri_pcmcia_gpio.bvd2_gpio);
+	if (ret)
+		goto err5;
+
+	ret = gpio_request(colibri_pcmcia_gpio.ppen_gpio, "PPEN");
+	if (ret)
+		goto err5;
+	ret = gpio_direction_output(colibri_pcmcia_gpio.ppen_gpio, 0);
+	if (ret)
+		goto err6;
+
+	ret = gpio_request(colibri_pcmcia_gpio.reset_gpio, "RESET");
+	if (ret)
+		goto err6;
+	ret = gpio_direction_output(colibri_pcmcia_gpio.reset_gpio, 1);
+	if (ret)
+		goto err7;
+
+	colibri_irqs[0].irq = gpio_to_irq(colibri_pcmcia_gpio.detect_gpio);
+	skt->socket.pci_irq = gpio_to_irq(colibri_pcmcia_gpio.ready_gpio);
+
+	return soc_pcmcia_request_irqs(skt, colibri_irqs,
+					ARRAY_SIZE(colibri_irqs));
+
+err7:
+	gpio_free(colibri_pcmcia_gpio.detect_gpio);
+err6:
+	gpio_free(colibri_pcmcia_gpio.ready_gpio);
+err5:
+	gpio_free(colibri_pcmcia_gpio.bvd1_gpio);
+err4:
+	gpio_free(colibri_pcmcia_gpio.bvd2_gpio);
+err3:
+	gpio_free(colibri_pcmcia_gpio.reset_gpio);
+err2:
+	gpio_free(colibri_pcmcia_gpio.ppen_gpio);
+err1:
+	return ret;
+}
+
+static void colibri_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
+{
+	gpio_free(colibri_pcmcia_gpio.detect_gpio);
+	gpio_free(colibri_pcmcia_gpio.ready_gpio);
+	gpio_free(colibri_pcmcia_gpio.bvd1_gpio);
+	gpio_free(colibri_pcmcia_gpio.bvd2_gpio);
+	gpio_free(colibri_pcmcia_gpio.reset_gpio);
+	gpio_free(colibri_pcmcia_gpio.ppen_gpio);
+}
+
+static void colibri_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
+					struct pcmcia_state *state)
+{
+
+	state->detect = !!gpio_get_value(colibri_pcmcia_gpio.detect_gpio);
+	state->ready  = !!gpio_get_value(colibri_pcmcia_gpio.ready_gpio);
+	state->bvd1   = !!gpio_get_value(colibri_pcmcia_gpio.bvd1_gpio);
+	state->bvd2   = !!gpio_get_value(colibri_pcmcia_gpio.bvd2_gpio);
+	state->wrprot = 0;
+	state->vs_3v  = 1;
+	state->vs_Xv  = 0;
+}
+
+static int
+colibri_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
+				const socket_state_t *state)
+{
+	gpio_set_value(colibri_pcmcia_gpio.ppen_gpio,
+			!(state->Vcc == 33 && state->Vpp < 50));
+	gpio_set_value(colibri_pcmcia_gpio.reset_gpio, state->flags & SS_RESET);
+	return 0;
+}
+
+static void colibri_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
+{
+}
+
+static void colibri_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
+{
+}
+
+static struct pcmcia_low_level colibri_pcmcia_ops = {
+	.owner			= THIS_MODULE,
+
+	.first			= 0,
+	.nr			= 1,
+
+	.hw_init		= colibri_pcmcia_hw_init,
+	.hw_shutdown		= colibri_pcmcia_hw_shutdown,
+
+	.socket_state		= colibri_pcmcia_socket_state,
+	.configure_socket	= colibri_pcmcia_configure_socket,
+
+	.socket_init		= colibri_pcmcia_socket_init,
+	.socket_suspend		= colibri_pcmcia_socket_suspend,
+};
+
+static struct platform_device *colibri_pcmcia_device;
+
+static int __init colibri_pcmcia_init(void)
+{
+	int ret;
+
+	colibri_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
+	if (!colibri_pcmcia_device)
+		return -ENOMEM;
+
+	/* Colibri PXA270 */
+	if (machine_is_colibri()) {
+		colibri_pcmcia_gpio.reset_gpio	= COLIBRI270_RESET_GPIO;
+		colibri_pcmcia_gpio.ppen_gpio	= COLIBRI270_PPEN_GPIO;
+		colibri_pcmcia_gpio.bvd1_gpio	= COLIBRI270_BVD1_GPIO;
+		colibri_pcmcia_gpio.bvd2_gpio	= COLIBRI270_BVD2_GPIO;
+		colibri_pcmcia_gpio.detect_gpio	= COLIBRI270_DETECT_GPIO;
+		colibri_pcmcia_gpio.ready_gpio	= COLIBRI270_READY_GPIO;
+	}
+
+	ret = platform_device_add_data(colibri_pcmcia_device,
+		&colibri_pcmcia_ops, sizeof(colibri_pcmcia_ops));
+
+	if (!ret)
+		ret = platform_device_add(colibri_pcmcia_device);
+
+	if (ret)
+		platform_device_put(colibri_pcmcia_device);
+
+	return ret;
+}
+
+static void __exit colibri_pcmcia_exit(void)
+{
+	platform_device_unregister(colibri_pcmcia_device);
+}
+
+module_init(colibri_pcmcia_init);
+module_exit(colibri_pcmcia_exit);
+
+MODULE_AUTHOR("Marek Vasut <marek.vasut at gmail.com>");
+MODULE_DESCRIPTION("PCMCIA support for Toradex Colibri PXA270");
+MODULE_ALIAS("platform:pxa2xx-pcmcia");
+MODULE_LICENSE("GPL");
-- 
1.7.1




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