patch-2.4.13 linux/drivers/pcmcia/sa1100_yopy.c
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- Lines: 140
- Date:
Thu Oct 11 09:43:29 2001
- Orig file:
v2.4.12/linux/drivers/pcmcia/sa1100_yopy.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.4.12/linux/drivers/pcmcia/sa1100_yopy.c linux/drivers/pcmcia/sa1100_yopy.c
@@ -0,0 +1,139 @@
+/*
+ * drivers/pcmcia/sa1100_yopy.c
+ *
+ * PCMCIA implementation routines for Yopy
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/sched.h>
+
+#include <asm/hardware.h>
+#include <asm/irq.h>
+#include <asm/arch/pcmcia.h>
+
+
+static inline void pcmcia_power(int on) {
+ /* high for power up */
+ yopy_gpio_set(GPIO_CF_POWER, on);
+}
+
+static inline void pcmcia_reset(int reset)
+{
+ /* high for reset */
+ yopy_gpio_set(GPIO_CF_RESET, reset);
+}
+
+static int yopy_pcmcia_init(struct pcmcia_init *init)
+{
+ int irq, res;
+
+ pcmcia_power(0);
+ pcmcia_reset(1);
+
+ /* All those are inputs */
+ GPDR &= ~(GPIO_CF_CD | GPIO_CF_BVD2 | GPIO_CF_BVD1 | GPIO_CF_IREQ);
+ GAFR &= ~(GPIO_CF_CD | GPIO_CF_BVD2 | GPIO_CF_BVD1 | GPIO_CF_IREQ);
+
+ /* Set transition detect */
+ set_GPIO_IRQ_edge( GPIO_CF_CD|GPIO_CF_BVD2|GPIO_CF_BVD1,
+ GPIO_BOTH_EDGES );
+ set_GPIO_IRQ_edge( GPIO_CF_IREQ, GPIO_FALLING_EDGE );
+
+ /* Register interrupts */
+ irq = IRQ_CF_CD;
+ res = request_irq(irq, init->handler, SA_INTERRUPT, "CF_CD", NULL);
+ if (res < 0) goto irq_err;
+ irq = IRQ_CF_BVD2;
+ res = request_irq(irq, init->handler, SA_INTERRUPT, "CF_BVD2", NULL);
+ if (res < 0) goto irq_err;
+ irq = IRQ_CF_BVD1;
+ res = request_irq(irq, init->handler, SA_INTERRUPT, "CF_BVD1", NULL);
+ if (res < 0) goto irq_err;
+
+ return 1;
+irq_err:
+ printk(KERN_ERR "%s: Request for IRQ %d failed\n", __FUNCTION__, irq);
+ return -1;
+}
+
+static int yopy_pcmcia_shutdown(void)
+{
+ /* disable IRQs */
+ free_irq( IRQ_CF_CD, NULL );
+ free_irq( IRQ_CF_BVD2, NULL );
+ free_irq( IRQ_CF_BVD1, NULL );
+
+ /* Disable CF */
+ pcmcia_reset(1);
+ pcmcia_power(0);
+
+ return 0;
+}
+
+static int yopy_pcmcia_socket_state(struct pcmcia_state_array *state_array)
+{
+ unsigned long levels;
+
+ if (state_array->size != 1)
+ return -1;
+
+ memset(state_array->state, 0,
+ state_array->size * sizeof(struct pcmcia_state));
+
+ levels = GPLR;
+
+ state_array->state[0].detect = (levels & GPIO_CF_CD) ? 0 : 1;
+ state_array->state[0].ready = (levels & GPIO_CF_READY) ? 1 : 0;
+ state_array->state[0].bvd1 = (levels & GPIO_CF_BVD1) ? 1 : 0;
+ state_array->state[0].bvd2 = (levels & GPIO_CF_BVD2) ? 1 : 0;
+ state_array->state[0].wrprot = 0; /* Not available on Yopy. */
+ state_array->state[0].vs_3v = 0; /* FIXME Can only apply 3.3V on Yopy. */
+ state_array->state[0].vs_Xv = 0;
+
+ return 1;
+}
+
+static int yopy_pcmcia_get_irq_info(struct pcmcia_irq_info *info)
+{
+ if (info->sock != 0)
+ return -1;
+
+ info->irq = IRQ_CF_IREQ;
+
+ return 0;
+}
+
+static int yopy_pcmcia_configure_socket(const struct pcmcia_configure *configure)
+{
+ if (configure->sock != 0)
+ return -1;
+
+ switch (configure->vcc) {
+ case 0: /* power off */;
+ pcmcia_power(0);
+ break;
+ case 50:
+ printk(KERN_WARNING __FUNCTION__"(): CS asked for 5V, applying 3.3V..\n");
+ case 33:
+ pcmcia_power(1);
+ break;
+ default:
+ printk(KERN_ERR __FUNCTION__"(): unrecognized Vcc %u\n",
+ configure->vcc);
+ return -1;
+ }
+
+ pcmcia_reset(configure->reset);
+
+ /* Silently ignore Vpp, output enable, speaker enable. */
+
+ return 0;
+}
+
+struct pcmcia_low_level yopy_pcmcia_ops = {
+ yopy_pcmcia_init,
+ yopy_pcmcia_shutdown,
+ yopy_pcmcia_socket_state,
+ yopy_pcmcia_get_irq_info,
+ yopy_pcmcia_configure_socket
+};
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TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)