patch-2.4.13 linux/drivers/pcmcia/sa1100_pangolin.c
Next file: linux/drivers/pcmcia/sa1100_pfs168.c
Previous file: linux/drivers/pcmcia/sa1100_neponset.c
Back to the patch index
Back to the overall index
- Lines: 158
- Date:
Thu Oct 11 09:43:29 2001
- Orig file:
v2.4.12/linux/drivers/pcmcia/sa1100_pangolin.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.4.12/linux/drivers/pcmcia/sa1100_pangolin.c linux/drivers/pcmcia/sa1100_pangolin.c
@@ -0,0 +1,157 @@
+/*
+ * drivers/pcmcia/sa1100_pangolin.c
+ *
+ * PCMCIA implementation routines for Pangolin
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/sched.h>
+
+#include <asm/hardware.h>
+#include <asm/irq.h>
+#include <asm/arch/pcmcia.h>
+
+static int pangolin_pcmcia_init(struct pcmcia_init *init){
+ int irq, res;
+
+ /* set GPIO_PCMCIA_CD & GPIO_PCMCIA_IRQ as inputs */
+ GPDR &= ~(GPIO_PCMCIA_CD|GPIO_PCMCIA_IRQ);
+#ifndef CONFIG_SA1100_PANGOLIN_PCMCIA_IDE
+ /* set GPIO pins GPIO_PCMCIA_BUS_ON & GPIO_PCMCIA_RESET as output */
+ GPDR |= (GPIO_PCMCIA_BUS_ON|GPIO_PCMCIA_RESET);
+ /* Enable PCMCIA bus: */
+ GPCR = GPIO_PCMCIA_BUS_ON;
+#else
+ /* set GPIO pin GPIO_PCMCIA_RESET as output */
+ GPDR |= GPIO_PCMCIA_RESET;
+#endif
+ /* Set transition detect */
+ set_GPIO_IRQ_edge( GPIO_PCMCIA_CD, GPIO_BOTH_EDGES );
+ set_GPIO_IRQ_edge( GPIO_PCMCIA_IRQ, GPIO_FALLING_EDGE );
+
+ /* Register interrupts */
+ irq = IRQ_PCMCIA_CD;
+ res = request_irq( irq, init->handler, SA_INTERRUPT, "PCMCIA_CD", NULL );
+ if( res < 0 ) goto irq_err;
+
+ /* There's only one slot, but it's "Slot 1": */
+ return 2;
+
+irq_err:
+ printk( KERN_ERR "%s: Request for IRQ %lu failed\n", __FUNCTION__, irq );
+ return -1;
+}
+
+static int pangolin_pcmcia_shutdown(void)
+{
+ /* disable IRQs */
+ free_irq( IRQ_PCMCIA_CD, NULL );
+#ifndef CONFIG_SA1100_PANGOLIN_PCMCIA_IDE
+ /* Disable PCMCIA bus: */
+ GPSR = GPIO_PCMCIA_BUS_ON;
+#endif
+ return 0;
+}
+
+static int pangolin_pcmcia_socket_state(struct pcmcia_state_array
+ *state_array){
+ unsigned long levels;
+
+ if(state_array->size<2) return -1;
+
+ memset(state_array->state, 0,
+ (state_array->size)*sizeof(struct pcmcia_state));
+
+ levels=GPLR;
+#ifndef CONFIG_SA1100_PANGOLIN_PCMCIA_IDE
+ state_array->state[1].detect=((levels & GPIO_PCMCIA_CD)==0)?1:0;
+ state_array->state[1].ready=(levels & GPIO_PCMCIA_IRQ)?1:0;
+ state_array->state[1].bvd1=1; /* Not available on Pangolin. */
+ state_array->state[1].bvd2=1; /* Not available on Pangolin. */
+ state_array->state[1].wrprot=0; /* Not available on Pangolin. */
+ state_array->state[1].vs_3v=1; /* Can only apply 3.3V on Pangolin. */
+ state_array->state[1].vs_Xv=0;
+#else
+ state_array->state[0].detect=((levels & GPIO_PCMCIA_CD)==0)?1:0;
+ state_array->state[0].ready=(levels & GPIO_PCMCIA_IRQ)?1:0;
+ state_array->state[0].bvd1=1; /* Not available on Pangolin. */
+ state_array->state[0].bvd2=1; /* Not available on Pangolin. */
+ state_array->state[0].wrprot=0; /* Not available on Pangolin. */
+ state_array->state[0].vs_3v=0; /* voltage level is determined by jumper setting */
+ state_array->state[0].vs_Xv=0;
+#endif
+ return 1;
+}
+
+static int pangolin_pcmcia_get_irq_info(struct pcmcia_irq_info *info){
+
+ if(info->sock>1) return -1;
+#ifndef CONFIG_SA1100_PANGOLIN_PCMCIA_IDE
+ if(info->sock==1)
+ info->irq=IRQ_PCMCIA_IRQ;
+#else
+ if(info->sock==0)
+ info->irq=IRQ_PCMCIA_IRQ;
+#endif
+ return 0;
+}
+
+static int pangolin_pcmcia_configure_socket(const struct pcmcia_configure
+ *configure)
+{
+ unsigned long value, flags;
+
+ if(configure->sock>1) return -1;
+#ifndef CONFIG_SA1100_PANGOLIN_PCMCIA_IDE
+ if(configure->sock==0) return 0;
+#endif
+ save_flags_cli(flags);
+
+ /* Murphy: BUS_ON different from POWER ? */
+
+ switch(configure->vcc){
+ case 0:
+ break;
+#ifndef CONFIG_SA1100_PANGOLIN_PCMCIA_IDE
+ case 50:
+ printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V...\n",
+ __FUNCTION__);
+ case 33: /* Can only apply 3.3V to the CF slot. */
+ break;
+#else
+ case 50:
+ printk(KERN_WARNING "%s(): CS asked for 5V, determinded by jumper setting...\n", __FUNCTION__);
+ break;
+ case 33:
+ printk(KERN_WARNING "%s(): CS asked for 3.3V, determined by jumper setting...\n", __FUNCTION__);
+ break;
+#endif
+ default:
+ printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __FUNCTION__,
+ configure->vcc);
+ restore_flags(flags);
+ return -1;
+ }
+#ifdef CONFIG_SA1100_PANGOLIN_PCMCIA_IDE
+ /* reset & unreset request */
+ if(configure->sock==0) {
+ if(configure->reset) {
+ GPSR |= GPIO_PCMCIA_RESET;
+ } else {
+ GPCR |= GPIO_PCMCIA_RESET;
+ }
+ }
+#endif
+ /* Silently ignore Vpp, output enable, speaker enable. */
+ restore_flags(flags);
+ return 0;
+}
+
+struct pcmcia_low_level pangolin_pcmcia_ops = {
+ pangolin_pcmcia_init,
+ pangolin_pcmcia_shutdown,
+ pangolin_pcmcia_socket_state,
+ pangolin_pcmcia_get_irq_info,
+ pangolin_pcmcia_configure_socket
+};
+
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)