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authorLinus Torvalds <torvalds@linux-foundation.org>2008-10-11 10:09:45 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-11 10:09:45 -0700
commit7cc4e87f912bbefa440a51856b8d076e5d1f554a (patch)
tree1b8df8683f3de37d2e8211ffa8d151f60d59af62 /drivers/pcmcia/pxa2xx_cm_x255.c
parent5ba2f67afb02c5302b2898949ed6fc3b3d37dcf1 (diff)
parent69fc7eed5f56bce15b239e5110de2575a6970df4 (diff)
Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (236 commits) [ARM] 5300/1: fixup spitz reset during boot [ARM] 5295/1: make ZONE_DMA optional [ARM] 5239/1: Palm Zire 72 power management support [ARM] 5298/1: Drop desc_handle_irq() [ARM] 5297/1: [KS8695] Fix two compile-time warnings [ARM] 5296/1: [KS8695] Replace macro's with trailing underscores. [ARM] pxa: allow multi-machine PCMCIA builds [ARM] pxa: add preliminary CPUFREQ support for PXA3xx [ARM] pxa: add missing ACCR bit definitions to pxa3xx-regs.h [ARM] pxa: rename cpu-pxa.c to cpufreq-pxa2xx.c [ARM] pxa/zylonite: add support for USB OHCI [ARM] ohci-pxa27x: use ioremap() and offset for register access [ARM] ohci-pxa27x: introduce pxa27x_clear_otgph() [ARM] ohci-pxa27x: use platform_get_{irq,resource} for the resource [ARM] ohci-pxa27x: move OHCI controller specific registers into the driver [ARM] ohci-pxa27x: introduce flags to avoid direct access to OHCI registers [ARM] pxa: move I2S register and bit definitions into pxa2xx-i2s.c [ARM] pxa: simplify DMA register definitions [ARM] pxa: make additional DCSR bits valid for PXA3xx [ARM] pxa: move i2c register and bit definitions into i2c-pxa.c ... Fixed up conflicts in arch/arm/mach-versatile/core.c sound/soc/pxa/pxa2xx-ac97.c sound/soc/pxa/pxa2xx-i2s.c manually.
Diffstat (limited to 'drivers/pcmcia/pxa2xx_cm_x255.c')
-rw-r--r--drivers/pcmcia/pxa2xx_cm_x255.c154
1 files changed, 154 insertions, 0 deletions
diff --git a/drivers/pcmcia/pxa2xx_cm_x255.c b/drivers/pcmcia/pxa2xx_cm_x255.c
new file mode 100644
index 00000000000..7c8bcb47662
--- /dev/null
+++ b/drivers/pcmcia/pxa2xx_cm_x255.c
@@ -0,0 +1,154 @@
+/*
+ * linux/drivers/pcmcia/pxa/pxa_cm_x255.c
+ *
+ * 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.
+ *
+ * Compulab Ltd., 2003, 2007, 2008
+ * Mike Rapoport <mike@compulab.co.il>
+ *
+ */
+
+#include <linux/platform_device.h>
+#include <linux/irq.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+
+#include <asm/mach-types.h>
+#include <mach/pxa-regs.h>
+
+#include "soc_common.h"
+
+#define GPIO_PCMCIA_SKTSEL (54)
+#define GPIO_PCMCIA_S0_CD_VALID (16)
+#define GPIO_PCMCIA_S1_CD_VALID (17)
+#define GPIO_PCMCIA_S0_RDYINT (6)
+#define GPIO_PCMCIA_S1_RDYINT (8)
+#define GPIO_PCMCIA_RESET (9)
+
+#define PCMCIA_S0_CD_VALID IRQ_GPIO(GPIO_PCMCIA_S0_CD_VALID)
+#define PCMCIA_S1_CD_VALID IRQ_GPIO(GPIO_PCMCIA_S1_CD_VALID)
+#define PCMCIA_S0_RDYINT IRQ_GPIO(GPIO_PCMCIA_S0_RDYINT)
+#define PCMCIA_S1_RDYINT IRQ_GPIO(GPIO_PCMCIA_S1_RDYINT)
+
+
+static struct pcmcia_irqs irqs[] = {
+ { 0, PCMCIA_S0_CD_VALID, "PCMCIA0 CD" },
+ { 1, PCMCIA_S1_CD_VALID, "PCMCIA1 CD" },
+};
+
+static int cmx255_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
+{
+ int ret = gpio_request(GPIO_PCMCIA_RESET, "PCCard reset");
+ if (ret)
+ return ret;
+ gpio_direction_output(GPIO_PCMCIA_RESET, 0);
+
+ skt->irq = skt->nr == 0 ? PCMCIA_S0_RDYINT : PCMCIA_S1_RDYINT;
+ ret = soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
+ if (!ret)
+ gpio_free(GPIO_PCMCIA_RESET);
+
+ return ret;
+}
+
+static void cmx255_pcmcia_shutdown(struct soc_pcmcia_socket *skt)
+{
+ soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
+ gpio_free(GPIO_PCMCIA_RESET);
+}
+
+
+static void cmx255_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
+ struct pcmcia_state *state)
+{
+ int cd = skt->nr ? GPIO_PCMCIA_S1_CD_VALID : GPIO_PCMCIA_S0_CD_VALID;
+ int rdy = skt->nr ? GPIO_PCMCIA_S0_RDYINT : GPIO_PCMCIA_S1_RDYINT;
+
+ state->detect = !gpio_get_value(cd);
+ state->ready = !!gpio_get_value(rdy);
+ state->bvd1 = 1;
+ state->bvd2 = 1;
+ state->vs_3v = 0;
+ state->vs_Xv = 0;
+ state->wrprot = 0; /* not available */
+}
+
+
+static int cmx255_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
+ const socket_state_t *state)
+{
+ switch (skt->nr) {
+ case 0:
+ if (state->flags & SS_RESET) {
+ gpio_set_value(GPIO_PCMCIA_SKTSEL, 0);
+ udelay(1);
+ gpio_set_value(GPIO_PCMCIA_RESET, 1);
+ udelay(10);
+ gpio_set_value(GPIO_PCMCIA_RESET, 0);
+ }
+ break;
+ case 1:
+ if (state->flags & SS_RESET) {
+ gpio_set_value(GPIO_PCMCIA_SKTSEL, 1);
+ udelay(1);
+ gpio_set_value(GPIO_PCMCIA_RESET, 1);
+ udelay(10);
+ gpio_set_value(GPIO_PCMCIA_RESET, 0);
+ }
+ break;
+ }
+
+ return 0;
+}
+
+static void cmx255_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
+{
+}
+
+static void cmx255_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
+{
+}
+
+
+static struct pcmcia_low_level cmx255_pcmcia_ops __initdata = {
+ .owner = THIS_MODULE,
+ .hw_init = cmx255_pcmcia_hw_init,
+ .hw_shutdown = cmx255_pcmcia_shutdown,
+ .socket_state = cmx255_pcmcia_socket_state,
+ .configure_socket = cmx255_pcmcia_configure_socket,
+ .socket_init = cmx255_pcmcia_socket_init,
+ .socket_suspend = cmx255_pcmcia_socket_suspend,
+ .nr = 1,
+};
+
+static struct platform_device *cmx255_pcmcia_device;
+
+int __init cmx255_pcmcia_init(void)
+{
+ int ret;
+
+ cmx255_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
+
+ if (!cmx255_pcmcia_device)
+ return -ENOMEM;
+
+ ret = platform_device_add_data(cmx255_pcmcia_device, &cmx255_pcmcia_ops,
+ sizeof(cmx255_pcmcia_ops));
+
+ if (ret == 0) {
+ printk(KERN_INFO "Registering cm-x255 PCMCIA interface.\n");
+ ret = platform_device_add(cmx255_pcmcia_device);
+ }
+
+ if (ret)
+ platform_device_put(cmx255_pcmcia_device);
+
+ return ret;
+}
+
+void __exit cmx255_pcmcia_exit(void)
+{
+ platform_device_unregister(cmx255_pcmcia_device);
+}