Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / pcmcia / sa1100_assabet.c

diff --git a/kernel/drivers/pcmcia/sa1100_assabet.c b/kernel/drivers/pcmcia/sa1100_assabet.c
new file mode 100644 (file)
index 0000000..44cfc44
--- /dev/null
+++ b/kernel/drivers/pcmcia/sa1100_assabet.c
@@ -0,0 +1,106 @@
+/*
+ * drivers/pcmcia/sa1100_assabet.c
+ *
+ * PCMCIA implementation routines for Assabet
+ *
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+
+#include <asm/mach-types.h>
+#include <mach/assabet.h>
+
+#include "sa1100_generic.h"
+
+static int assabet_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
+{
+       skt->stat[SOC_STAT_CD].gpio = ASSABET_GPIO_CF_CD;
+       skt->stat[SOC_STAT_CD].name = "CF CD";
+       skt->stat[SOC_STAT_BVD1].gpio = ASSABET_GPIO_CF_BVD1;
+       skt->stat[SOC_STAT_BVD1].name = "CF BVD1";
+       skt->stat[SOC_STAT_BVD2].gpio = ASSABET_GPIO_CF_BVD2;
+       skt->stat[SOC_STAT_BVD2].name = "CF BVD2";
+       skt->stat[SOC_STAT_RDY].gpio = ASSABET_GPIO_CF_IRQ;
+       skt->stat[SOC_STAT_RDY].name = "CF RDY";
+
+       return 0;
+}
+
+static void
+assabet_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
+{
+       state->vs_3v  = 1; /* Can only apply 3.3V on Assabet. */
+       state->vs_Xv  = 0;
+}
+
+static int
+assabet_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
+{
+       unsigned int mask;
+
+       switch (state->Vcc) {
+       case 0:
+               mask = 0;
+               break;
+
+       case 50:
+               printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V...\n",
+                       __func__);
+
+       case 33:  /* Can only apply 3.3V to the CF slot. */
+               mask = ASSABET_BCR_CF_PWR;
+               break;
+
+       default:
+               printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __func__,
+                       state->Vcc);
+               return -1;
+       }
+
+       /* Silently ignore Vpp, speaker enable. */
+
+       if (state->flags & SS_RESET)
+               mask |= ASSABET_BCR_CF_RST;
+       if (!(state->flags & SS_OUTPUT_ENA))
+               mask |= ASSABET_BCR_CF_BUS_OFF;
+
+       ASSABET_BCR_frob(ASSABET_BCR_CF_RST | ASSABET_BCR_CF_PWR |
+                       ASSABET_BCR_CF_BUS_OFF, mask);
+
+       return 0;
+}
+
+/*
+ * Disable card status IRQs on suspend.
+ */
+static void assabet_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
+{
+       /*
+        * Tristate the CF bus signals.  Also assert CF
+        * reset as per user guide page 4-11.
+        */
+       ASSABET_BCR_set(ASSABET_BCR_CF_BUS_OFF | ASSABET_BCR_CF_RST);
+}
+
+static struct pcmcia_low_level assabet_pcmcia_ops = { 
+       .owner                  = THIS_MODULE,
+       .hw_init                = assabet_pcmcia_hw_init,
+       .socket_state           = assabet_pcmcia_socket_state,
+       .configure_socket       = assabet_pcmcia_configure_socket,
+       .socket_suspend         = assabet_pcmcia_socket_suspend,
+};
+
+int pcmcia_assabet_init(struct device *dev)
+{
+       int ret = -ENODEV;
+
+       if (machine_is_assabet() && !machine_has_neponset())
+               ret = sa11xx_drv_pcmcia_probe(dev, &assabet_pcmcia_ops, 1, 1);
+
+       return ret;
+}