[ARM] pxa/stargate2: add support for Compact Flash/PCMCIA
Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Eric Miao <eric.miao@marvell.com>
diff --git a/drivers/pcmcia/Kconfig b/drivers/pcmcia/Kconfig
index 2764735..fbf965b 100644
--- a/drivers/pcmcia/Kconfig
+++ b/drivers/pcmcia/Kconfig
@@ -217,7 +217,7 @@
depends on ARM && ARCH_PXA && PCMCIA
depends on (ARCH_LUBBOCK || MACH_MAINSTONE || PXA_SHARPSL \
|| MACH_ARMCORE || ARCH_PXA_PALM || TRIZEPS_PCMCIA \
- || ARCH_VIPER || ARCH_PXA_ESERIES)
+ || ARCH_VIPER || ARCH_PXA_ESERIES || MACH_STARGATE2)
help
Say Y here to include support for the PXA2xx PCMCIA controller
diff --git a/drivers/pcmcia/Makefile b/drivers/pcmcia/Makefile
index bbac463..047394d 100644
--- a/drivers/pcmcia/Makefile
+++ b/drivers/pcmcia/Makefile
@@ -73,5 +73,6 @@
pxa2xx-obj-$(CONFIG_MACH_PALMTX) += pxa2xx_palmtx.o
pxa2xx-obj-$(CONFIG_MACH_PALMLD) += pxa2xx_palmld.o
pxa2xx-obj-$(CONFIG_MACH_E740) += pxa2xx_e740.o
+pxa2xx-obj-$(CONFIG_MACH_STARGATE2) += pxa2xx_stargate2.o
obj-$(CONFIG_PCMCIA_PXA2XX) += pxa2xx_core.o $(pxa2xx-obj-y)
diff --git a/drivers/pcmcia/pxa2xx_stargate2.c b/drivers/pcmcia/pxa2xx_stargate2.c
new file mode 100644
index 0000000..490749e
--- /dev/null
+++ b/drivers/pcmcia/pxa2xx_stargate2.c
@@ -0,0 +1,174 @@
+/*
+ * linux/drivers/pcmcia/pxa2xx_stargate2.c
+ *
+ * Stargate 2 PCMCIA specific routines.
+ *
+ * Created: December 6, 2005
+ * Author: Ed C. Epp
+ * Copyright: Intel Corp 2005
+ * Jonathan Cameron <jic23@cam.ac.uk> 2009
+ *
+ * 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/init.h>
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/gpio.h>
+
+#include <pcmcia/ss.h>
+
+#include <asm/irq.h>
+#include <asm/mach-types.h>
+
+#include "soc_common.h"
+
+#define SG2_S0_BUFF_CTL 120
+#define SG2_S0_POWER_CTL 108
+#define SG2_S0_GPIO_RESET 82
+#define SG2_S0_GPIO_DETECT 53
+#define SG2_S0_GPIO_READY 81
+
+static struct pcmcia_irqs irqs[] = {
+ { 0, IRQ_GPIO(SG2_S0_GPIO_DETECT), "PCMCIA0 CD" },
+};
+
+static int sg2_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
+{
+ skt->irq = IRQ_GPIO(SG2_S0_GPIO_READY);
+ return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
+}
+
+static void sg2_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
+{
+ soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
+}
+
+static void sg2_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
+ struct pcmcia_state *state)
+{
+ state->detect = !gpio_get_value(SG2_S0_GPIO_DETECT);
+ state->ready = !!gpio_get_value(SG2_S0_GPIO_READY);
+ state->bvd1 = 0; /* not available - battery detect on card */
+ state->bvd2 = 0; /* not available */
+ state->vs_3v = 1; /* not available - voltage detect for card */
+ state->vs_Xv = 0; /* not available */
+ state->wrprot = 0; /* not available - write protect */
+}
+
+static int sg2_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
+ const socket_state_t *state)
+{
+ /* Enable card power */
+ switch (state->Vcc) {
+ case 0:
+ /* sets power ctl register high */
+ gpio_set_value(SG2_S0_POWER_CTL, 1);
+ break;
+ case 33:
+ case 50:
+ /* sets power control register low (clear) */
+ gpio_set_value(SG2_S0_POWER_CTL, 0);
+ msleep(100);
+ break;
+ default:
+ pr_err("%s(): bad Vcc %u\n",
+ __func__, state->Vcc);
+ return -1;
+ }
+
+ /* reset */
+ gpio_set_value(SG2_S0_GPIO_RESET, !!(state->flags & SS_RESET));
+
+ return 0;
+}
+
+static void sg2_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
+{
+ soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs));
+}
+
+static void sg2_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
+{
+ soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs));
+}
+
+static struct pcmcia_low_level sg2_pcmcia_ops __initdata = {
+ .owner = THIS_MODULE,
+ .hw_init = sg2_pcmcia_hw_init,
+ .hw_shutdown = sg2_pcmcia_hw_shutdown,
+ .socket_state = sg2_pcmcia_socket_state,
+ .configure_socket = sg2_pcmcia_configure_socket,
+ .socket_init = sg2_pcmcia_socket_init,
+ .socket_suspend = sg2_pcmcia_socket_suspend,
+ .nr = 1,
+};
+
+static struct platform_device *sg2_pcmcia_device;
+
+static int __init sg2_pcmcia_init(void)
+{
+ int ret;
+
+ if (!machine_is_stargate2())
+ return -ENODEV;
+
+ sg2_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
+ if (!sg2_pcmcia_device)
+ return -ENOMEM;
+
+ ret = gpio_request(SG2_S0_BUFF_CTL, "SG2 CF buff ctl");
+ if (ret)
+ goto error_put_platform_device;
+ ret = gpio_request(SG2_S0_POWER_CTL, "SG2 CF power ctl");
+ if (ret)
+ goto error_free_gpio_buff_ctl;
+ ret = gpio_request(SG2_S0_GPIO_RESET, "SG2 CF reset");
+ if (ret)
+ goto error_free_gpio_power_ctl;
+ /* Set gpio directions */
+ gpio_direction_output(SG2_S0_BUFF_CTL, 0);
+ gpio_direction_output(SG2_S0_POWER_CTL, 1);
+ gpio_direction_output(SG2_S0_GPIO_RESET, 1);
+
+ ret = platform_device_add_data(sg2_pcmcia_device,
+ &sg2_pcmcia_ops,
+ sizeof(sg2_pcmcia_ops));
+ if (ret)
+ goto error_free_gpio_reset;
+
+ ret = platform_device_add(sg2_pcmcia_device);
+ if (ret)
+ goto error_free_gpio_reset;
+
+ return 0;
+error_free_gpio_reset:
+ gpio_free(SG2_S0_GPIO_RESET);
+error_free_gpio_power_ctl:
+ gpio_free(SG2_S0_POWER_CTL);
+error_free_gpio_buff_ctl:
+ gpio_free(SG2_S0_BUFF_CTL);
+error_put_platform_device:
+ platform_device_put(sg2_pcmcia_device);
+
+ return ret;
+}
+
+static void __exit sg2_pcmcia_exit(void)
+{
+ platform_device_unregister(sg2_pcmcia_device);
+ gpio_free(SG2_S0_BUFF_CTL);
+ gpio_free(SG2_S0_POWER_CTL);
+ gpio_free(SG2_S0_GPIO_RESET);
+}
+
+fs_initcall(sg2_pcmcia_init);
+module_exit(sg2_pcmcia_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:pxa2xx-pcmcia");