1 files changed, 179 insertions, 0 deletions

diff --git a/drivers/pcmcia/pxa2xx_viper.c b/drivers/pcmcia/pxa2xx_viper.c
new file mode 100644
index 000000000000..dd10481be7bf
--- /dev/null
+++ b/drivers/pcmcia/pxa2xx_viper.c
@@ -0,0 +1,179 @@
+/*
+ * VIPER PCMCIA support
+ *   Copyright 2004 Arcom Control Systems
+ *
+ * Maintained by Marc Zyngier <maz@misterjones.org>
+ *                            <marc.zyngier@altran.com>
+ *
+ * Based on:
+ *   iPAQ h2200 PCMCIA support
+ *   Copyright 2004 Koen Kooi <koen@vestingbar.nl>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive for
+ * more details.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/gpio.h>
+
+#include <pcmcia/ss.h>
+
+#include <asm/irq.h>
+
+#include <mach/pxa-regs.h>
+#include <mach/viper.h>
+#include <asm/mach-types.h>
+
+#include "soc_common.h"
+#include "pxa2xx_base.h"
+
+static struct pcmcia_irqs irqs[] = {
+        { 0, gpio_to_irq(VIPER_CF_CD_GPIO),  "PCMCIA_CD" }
+};
+
+static int viper_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
+{
+        unsigned long flags;
+
+        skt->irq = gpio_to_irq(VIPER_CF_RDY_GPIO);
+
+        if (gpio_request(VIPER_CF_CD_GPIO, "CF detect"))
+                goto err_request_cd;
+
+        if (gpio_request(VIPER_CF_RDY_GPIO, "CF ready"))
+                goto err_request_rdy;
+
+        if (gpio_request(VIPER_CF_POWER_GPIO, "CF power"))
+                goto err_request_pwr;
+
+        local_irq_save(flags);
+
+        /* GPIO 82 is the CF power enable line. initially off */
+        if (gpio_direction_output(VIPER_CF_POWER_GPIO, 0) ||
+            gpio_direction_input(VIPER_CF_CD_GPIO) ||
+            gpio_direction_input(VIPER_CF_RDY_GPIO)) {
+                local_irq_restore(flags);
+                goto err_dir;
+        }
+
+        local_irq_restore(flags);
+
+        return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
+
+err_dir:
+        gpio_free(VIPER_CF_POWER_GPIO);
+err_request_pwr:
+        gpio_free(VIPER_CF_RDY_GPIO);
+err_request_rdy:
+        gpio_free(VIPER_CF_CD_GPIO);
+err_request_cd:
+        printk(KERN_ERR "viper: Failed to setup PCMCIA GPIOs\n");
+        return -1;
+}
+
+/*
+ * Release all resources.
+ */
+static void viper_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
+{
+        soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
+        gpio_free(VIPER_CF_POWER_GPIO);
+        gpio_free(VIPER_CF_RDY_GPIO);
+        gpio_free(VIPER_CF_CD_GPIO);
+}
+
+static void viper_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
+                                      struct pcmcia_state *state)
+{
+        state->detect = gpio_get_value(VIPER_CF_CD_GPIO) ? 0 : 1;
+        state->ready  = gpio_get_value(VIPER_CF_RDY_GPIO) ? 1 : 0;
+        state->bvd1   = 1;
+        state->bvd2   = 1;
+        state->wrprot = 0;
+        state->vs_3v  = 1; /* Can only apply 3.3V */
+        state->vs_Xv  = 0;
+}
+
+static int viper_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
+                                         const socket_state_t *state)
+{
+        /* Silently ignore Vpp, output enable, speaker enable. */
+        viper_cf_rst(state->flags & SS_RESET);
+
+        /* Apply socket voltage */
+        switch (state->Vcc) {
+        case 0:
+                gpio_set_value(VIPER_CF_POWER_GPIO, 0);
+                break;
+        case 33:
+                gpio_set_value(VIPER_CF_POWER_GPIO, 1);
+                break;
+        default:
+                printk(KERN_ERR "%s: Unsupported Vcc:%d\n",
+                       __func__, state->Vcc);
+                return -1;
+        }
+
+        return 0;
+}
+
+static void viper_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
+{
+}
+
+static void viper_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
+{
+}
+
+static struct pcmcia_low_level viper_pcmcia_ops __initdata = {
+        .owner                  = THIS_MODULE,
+        .hw_init                = viper_pcmcia_hw_init,
+        .hw_shutdown            = viper_pcmcia_hw_shutdown,
+        .socket_state           = viper_pcmcia_socket_state,
+        .configure_socket       = viper_pcmcia_configure_socket,
+        .socket_init            = viper_pcmcia_socket_init,
+        .socket_suspend         = viper_pcmcia_socket_suspend,
+        .nr                     = 1,
+};
+
+static struct platform_device *viper_pcmcia_device;
+
+static int __init viper_pcmcia_init(void)
+{
+        int ret;
+
+        if (!machine_is_viper())
+                return -ENODEV;
+
+        viper_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
+        if (!viper_pcmcia_device)
+                return -ENOMEM;
+
+        ret = platform_device_add_data(viper_pcmcia_device,
+                                       &viper_pcmcia_ops,
+                                       sizeof(viper_pcmcia_ops));
+
+        if (!ret)
+                ret = platform_device_add(viper_pcmcia_device);
+
+        if (ret)
+                platform_device_put(viper_pcmcia_device);
+
+        return ret;
+}
+
+static void __exit viper_pcmcia_exit(void)
+{
+        platform_device_unregister(viper_pcmcia_device);
+}
+
+module_init(viper_pcmcia_init);
+module_exit(viper_pcmcia_exit);
+
+MODULE_LICENSE("GPL");