[PATCH Resend] PCMCIA: add Cogent CSB726 PCMCIA support
Vladimir Zapolskiy
vzapolskiy at gmail.com
Thu Jun 3 09:25:50 EDT 2010
This patch adds support for CompactFlash socket found in CSB726 board.
Signed-off-by: Vladimir Zapolskiy <vzapolskiy at gmail.com>
Cc: Dmitry Eremin-Solenikov <dbaryshkov at gmail.com>
Cc: Dominik Brodowski <linux at dominikbrodowski.net>
Acked-by: Dmitry Eremin-Solenikov <dbaryshkov at gmail.com>
Acked-by: Dominik Brodowski<linux at dominikbrodowski.net>
---
drivers/pcmcia/Kconfig | 3 +-
drivers/pcmcia/Makefile | 1 +
drivers/pcmcia/pxa2xx_csb726.c | 156 ++++++++++++++++++++++++++++++++++++++++
3 files changed, 159 insertions(+), 1 deletions(-)
create mode 100644 drivers/pcmcia/pxa2xx_csb726.c
diff --git a/drivers/pcmcia/Kconfig b/drivers/pcmcia/Kconfig
index 9f3adbd..168219b 100644
--- a/drivers/pcmcia/Kconfig
+++ b/drivers/pcmcia/Kconfig
@@ -208,7 +208,8 @@ 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_CSB726)
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 83ff802..efcda3f 100644
--- a/drivers/pcmcia/Makefile
+++ b/drivers/pcmcia/Makefile
@@ -74,5 +74,6 @@ 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-$(CONFIG_MACH_CSB726) += pxa2xx_csb726.o
obj-$(CONFIG_PCMCIA_PXA2XX) += pxa2xx_base.o $(pxa2xx-obj-y)
diff --git a/drivers/pcmcia/pxa2xx_csb726.c b/drivers/pcmcia/pxa2xx_csb726.c
new file mode 100644
index 0000000..bd86e90
--- /dev/null
+++ b/drivers/pcmcia/pxa2xx_csb726.c
@@ -0,0 +1,156 @@
+/*
+ * linux/drivers/pcmcia/pxa2xx_csb726.c
+ *
+ * Cogent CSB726 Compact Flash specific routines.
+ *
+ * Copyright 2010 Vladimir Zapolskiy <vzapolskiy 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/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 GPIO_CF_RDY 98
+#define GPIO_CF_CD 99
+#define GPIO_CF_RST 103
+
+static struct pcmcia_irqs irqs[] = {
+ {
+ .sock = 0,
+ .irq = IRQ_GPIO(GPIO_CF_CD),
+ .str = "PCMCIA0 CD",
+ },
+};
+
+static int csb726_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
+{
+ int ret;
+
+ ret = gpio_request(GPIO_CF_RST, "CF reset");
+ if (ret)
+ return ret;
+ gpio_direction_output(GPIO_CF_RST, 0);
+
+ skt->socket.pci_irq = IRQ_GPIO(GPIO_CF_RDY);
+ ret = soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
+ if (!ret)
+ gpio_free(GPIO_CF_RST);
+
+ return ret;
+}
+
+static void csb726_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
+{
+ soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
+ gpio_free(GPIO_CF_RST);
+}
+
+static void csb726_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
+ struct pcmcia_state *state)
+{
+ state->detect = !gpio_get_value(GPIO_CF_CD);
+ state->ready = !!gpio_get_value(GPIO_CF_RDY);
+ 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 csb726_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
+ const socket_state_t *state)
+{
+ switch (skt->nr) {
+ case 0:
+ if (state->flags & SS_RESET) {
+ /* reset */
+ gpio_set_value(GPIO_CF_RST, 1);
+ udelay(10);
+ gpio_set_value(GPIO_CF_RST, 0);
+ }
+ break;
+ }
+
+ return 0;
+}
+
+static void csb726_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
+{
+ soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs));
+}
+
+static void csb726_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
+{
+ soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs));
+}
+
+static struct pcmcia_low_level csb726_pcmcia_ops __initdata = {
+ .owner = THIS_MODULE,
+ .hw_init = csb726_pcmcia_hw_init,
+ .hw_shutdown = csb726_pcmcia_hw_shutdown,
+ .socket_state = csb726_pcmcia_socket_state,
+ .configure_socket = csb726_pcmcia_configure_socket,
+ .socket_init = csb726_pcmcia_socket_init,
+ .socket_suspend = csb726_pcmcia_socket_suspend,
+ .nr = 1,
+};
+
+static struct platform_device *csb726_pcmcia_device;
+
+static int __init csb726_pcmcia_init(void)
+{
+ int ret;
+
+ if (!machine_is_csb726())
+ return -ENODEV;
+
+ csb726_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
+ if (!csb726_pcmcia_device)
+ return -ENOMEM;
+
+ ret = platform_device_add_data(csb726_pcmcia_device,
+ &csb726_pcmcia_ops,
+ sizeof(csb726_pcmcia_ops));
+ if (ret)
+ goto error_put_platform_device;
+
+ ret = platform_device_add(csb726_pcmcia_device);
+ if (ret)
+ goto error_put_platform_device;
+
+ return 0;
+
+error_put_platform_device:
+ platform_device_put(csb726_pcmcia_device);
+
+ return ret;
+}
+
+static void __exit csb726_pcmcia_exit(void)
+{
+ platform_device_unregister(csb726_pcmcia_device);
+}
+
+fs_initcall(csb726_pcmcia_init);
+module_exit(csb726_pcmcia_exit);
+
+MODULE_DESCRIPTION("Cogent CSB726 Compact Flash Driver");
+MODULE_AUTHOR("Vladimir Zapolskiy <vzapolskiy at gmail.com>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:pxa2xx-pcmcia");
--
1.7.0.4
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