Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / pcmcia / sa1100_cerf.c

diff --git a/kernel/drivers/pcmcia/sa1100_cerf.c b/kernel/drivers/pcmcia/sa1100_cerf.c
new file mode 100644 (file)
index 0000000..b3774e5
--- /dev/null
+++ b/kernel/drivers/pcmcia/sa1100_cerf.c
@@ -0,0 +1,92 @@
+/*
+ * drivers/pcmcia/sa1100_cerf.c
+ *
+ * PCMCIA implementation routines for CerfBoard
+ * Based off the Assabet.
+ *
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+
+#include <mach/hardware.h>
+#include <asm/mach-types.h>
+#include <asm/irq.h>
+#include <mach/cerf.h>
+#include "sa1100_generic.h"
+
+#define CERF_SOCKET    1
+
+static int cerf_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
+{
+       int ret;
+
+       ret = gpio_request_one(CERF_GPIO_CF_RESET, GPIOF_OUT_INIT_LOW, "CF_RESET");
+       if (ret)
+               return ret;
+
+       skt->stat[SOC_STAT_CD].gpio = CERF_GPIO_CF_CD;
+       skt->stat[SOC_STAT_CD].name = "CF_CD";
+       skt->stat[SOC_STAT_BVD1].gpio = CERF_GPIO_CF_BVD1;
+       skt->stat[SOC_STAT_BVD1].name = "CF_BVD1";
+       skt->stat[SOC_STAT_BVD2].gpio = CERF_GPIO_CF_BVD2;
+       skt->stat[SOC_STAT_BVD2].name = "CF_BVD2";
+       skt->stat[SOC_STAT_RDY].gpio = CERF_GPIO_CF_IRQ;
+       skt->stat[SOC_STAT_RDY].name = "CF_IRQ";
+
+       return 0;
+}
+
+static void cerf_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
+{
+       gpio_free(CERF_GPIO_CF_RESET);
+}
+
+static void
+cerf_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
+{
+       state->vs_3v    = 1;
+       state->vs_Xv    = 0;
+}
+
+static int
+cerf_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
+                            const socket_state_t *state)
+{
+       switch (state->Vcc) {
+       case 0:
+       case 50:
+       case 33:
+               break;
+
+       default:
+               printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
+                       __func__, state->Vcc);
+               return -1;
+       }
+
+       gpio_set_value(CERF_GPIO_CF_RESET, !!(state->flags & SS_RESET));
+
+       return 0;
+}
+
+static struct pcmcia_low_level cerf_pcmcia_ops = { 
+       .owner                  = THIS_MODULE,
+       .hw_init                = cerf_pcmcia_hw_init,
+       .hw_shutdown            = cerf_pcmcia_hw_shutdown,
+       .socket_state           = cerf_pcmcia_socket_state,
+       .configure_socket       = cerf_pcmcia_configure_socket,
+};
+
+int pcmcia_cerf_init(struct device *dev)
+{
+       int ret = -ENODEV;
+
+       if (machine_is_cerf())
+               ret = sa11xx_drv_pcmcia_probe(dev, &cerf_pcmcia_ops, CERF_SOCKET, 1);
+
+       return ret;
+}