Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / pcmcia / pxa2xx_cm_x255.c

diff --git a/kernel/drivers/pcmcia/pxa2xx_cm_x255.c b/kernel/drivers/pcmcia/pxa2xx_cm_x255.c
new file mode 100644 (file)
index 0000000..da40908
--- /dev/null
+++ b/kernel/drivers/pcmcia/pxa2xx_cm_x255.c
@@ -0,0 +1,128 @@
+/*
+ * 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 <linux/export.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)
+
+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);
+
+       if (skt->nr == 0) {
+               skt->stat[SOC_STAT_CD].gpio = GPIO_PCMCIA_S0_CD_VALID;
+               skt->stat[SOC_STAT_CD].name = "PCMCIA0 CD";
+               skt->stat[SOC_STAT_RDY].gpio = GPIO_PCMCIA_S0_RDYINT;
+               skt->stat[SOC_STAT_RDY].name = "PCMCIA0 RDY";
+       } else {
+               skt->stat[SOC_STAT_CD].gpio = GPIO_PCMCIA_S1_CD_VALID;
+               skt->stat[SOC_STAT_CD].name = "PCMCIA1 CD";
+               skt->stat[SOC_STAT_RDY].gpio = GPIO_PCMCIA_S1_RDYINT;
+               skt->stat[SOC_STAT_RDY].name = "PCMCIA1 RDY";
+       }
+
+       return 0;
+}
+
+static void cmx255_pcmcia_shutdown(struct soc_pcmcia_socket *skt)
+{
+       gpio_free(GPIO_PCMCIA_RESET);
+}
+
+
+static void cmx255_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
+                                      struct pcmcia_state *state)
+{
+       state->vs_3v  = 0;
+       state->vs_Xv  = 0;
+}
+
+
+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 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,
+       .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);
+}