Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / pcmcia / sa1100_shannon.c

diff --git a/kernel/drivers/pcmcia/sa1100_shannon.c b/kernel/drivers/pcmcia/sa1100_shannon.c
new file mode 100644 (file)
index 0000000..b07a2dc
--- /dev/null
+++ b/kernel/drivers/pcmcia/sa1100_shannon.c
@@ -0,0 +1,103 @@
+/*
+ * drivers/pcmcia/sa1100_shannon.c
+ *
+ * PCMCIA implementation routines for Shannon
+ *
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/io.h>
+
+#include <mach/hardware.h>
+#include <asm/mach-types.h>
+#include <mach/shannon.h>
+#include <asm/irq.h>
+#include "sa1100_generic.h"
+
+static int shannon_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
+{
+       /* All those are inputs */
+       GAFR &= ~(GPIO_GPIO(SHANNON_GPIO_EJECT_0) |
+                 GPIO_GPIO(SHANNON_GPIO_EJECT_1) |
+                 GPIO_GPIO(SHANNON_GPIO_RDY_0) |
+                 GPIO_GPIO(SHANNON_GPIO_RDY_1));
+
+       if (skt->nr == 0) {
+               skt->stat[SOC_STAT_CD].gpio = SHANNON_GPIO_EJECT_0;
+               skt->stat[SOC_STAT_CD].name = "PCMCIA_CD_0";
+               skt->stat[SOC_STAT_RDY].gpio = SHANNON_GPIO_RDY_0;
+               skt->stat[SOC_STAT_RDY].name = "PCMCIA_RDY_0";
+       } else {
+               skt->stat[SOC_STAT_CD].gpio = SHANNON_GPIO_EJECT_1;
+               skt->stat[SOC_STAT_CD].name = "PCMCIA_CD_1";
+               skt->stat[SOC_STAT_RDY].gpio = SHANNON_GPIO_RDY_1;
+               skt->stat[SOC_STAT_RDY].name = "PCMCIA_RDY_1";
+       }
+
+       return 0;
+}
+
+static void
+shannon_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
+                           struct pcmcia_state *state)
+{
+       switch (skt->nr) {
+       case 0:
+               state->bvd1   = 1; 
+               state->bvd2   = 1; 
+               state->vs_3v  = 1; /* FIXME Can only apply 3.3V on Shannon. */
+               state->vs_Xv  = 0;
+               break;
+
+       case 1:
+               state->bvd1   = 1; 
+               state->bvd2   = 1; 
+               state->vs_3v  = 1; /* FIXME Can only apply 3.3V on Shannon. */
+               state->vs_Xv  = 0;
+               break;
+       }
+}
+
+static int
+shannon_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
+                               const socket_state_t *state)
+{
+       switch (state->Vcc) {
+       case 0: /* power off */
+               printk(KERN_WARNING "%s(): CS asked for 0V, still applying 3.3V..\n", __func__);
+               break;
+       case 50:
+               printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V..\n", __func__);
+       case 33:
+               break;
+       default:
+               printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
+                      __func__, state->Vcc);
+               return -1;
+       }
+
+       printk(KERN_WARNING "%s(): Warning, Can't perform reset\n", __func__);
+       
+       /* Silently ignore Vpp, output enable, speaker enable. */
+
+       return 0;
+}
+
+static struct pcmcia_low_level shannon_pcmcia_ops = {
+       .owner                  = THIS_MODULE,
+       .hw_init                = shannon_pcmcia_hw_init,
+       .socket_state           = shannon_pcmcia_socket_state,
+       .configure_socket       = shannon_pcmcia_configure_socket,
+};
+
+int pcmcia_shannon_init(struct device *dev)
+{
+       int ret = -ENODEV;
+
+       if (machine_is_shannon())
+               ret = sa11xx_drv_pcmcia_probe(dev, &shannon_pcmcia_ops, 0, 2);
+
+       return ret;
+}