[PATCH 03/17] ARM: pxa: Toradex Colibri PXA270 CF support
Marek Vasut
marek.vasut at gmail.com
Tue Nov 2 19:51:40 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");
--
1.7.2.3
More information about the linux-arm-kernel
mailing list