patch-2.4.19 linux-2.4.19/drivers/pcmcia/sa1100_shannon.c

• Lines: 145
• Date: Fri Aug 2 17:39:44 2002
• Orig file: linux-2.4.18/drivers/pcmcia/sa1100_shannon.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.18/drivers/pcmcia/sa1100_shannon.c linux-2.4.19/drivers/pcmcia/sa1100_shannon.c
@@ -0,0 +1,144 @@
+/*
+ * drivers/pcmcia/sa1100_shannon.c
+ *
+ * PCMCIA implementation routines for Shannon
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/sched.h>
+
+#include <asm/hardware.h>
+#include <asm/arch/shannon.h>
+#include <asm/irq.h>
+#include "sa1100_generic.h"
+
+static int shannon_pcmcia_init(struct pcmcia_init *init)
+{
+	int irq, res;
+
+	/* All those are inputs */
+	GPDR &= ~(SHANNON_GPIO_EJECT_0 | SHANNON_GPIO_EJECT_1 | 
+		  SHANNON_GPIO_RDY_0 | SHANNON_GPIO_RDY_1);
+	GAFR &= ~(SHANNON_GPIO_EJECT_0 | SHANNON_GPIO_EJECT_1 | 
+		  SHANNON_GPIO_RDY_0 | SHANNON_GPIO_RDY_1);
+
+	/* Set transition detect */
+	set_GPIO_IRQ_edge(SHANNON_GPIO_EJECT_0 | SHANNON_GPIO_EJECT_1, GPIO_NO_EDGES);
+	set_GPIO_IRQ_edge(SHANNON_GPIO_RDY_0 | SHANNON_GPIO_RDY_1, GPIO_FALLING_EDGE);
+
+	/* Register interrupts */
+	irq = SHANNON_IRQ_GPIO_EJECT_0;
+	res = request_irq(irq, init->handler, SA_INTERRUPT, "PCMCIA_CD_0", NULL);
+	if (res < 0) goto irq_err;
+	irq = SHANNON_IRQ_GPIO_EJECT_1;
+	res = request_irq(irq, init->handler, SA_INTERRUPT, "PCMCIA_CD_1", NULL);
+	if (res < 0) goto irq_err;
+
+	return 2;
+irq_err:
+	printk(KERN_ERR "%s: Request for IRQ %d failed\n", __FUNCTION__, irq);
+	return -1;
+}
+
+static int shannon_pcmcia_shutdown(void)
+{
+	/* disable IRQs */
+	free_irq(SHANNON_IRQ_GPIO_EJECT_0, NULL);
+	free_irq(SHANNON_IRQ_GPIO_EJECT_1, NULL);
+
+	return 0;
+}
+
+static int shannon_pcmcia_socket_state(struct pcmcia_state_array *state_array)
+{
+	unsigned long levels;
+
+	memset(state_array->state, 0,
+	       state_array->size * sizeof(struct pcmcia_state));
+
+	levels = GPLR;
+
+	state_array->state[0].detect = (levels & SHANNON_GPIO_EJECT_0) ? 0 : 1;
+	state_array->state[0].ready  = (levels & SHANNON_GPIO_RDY_0) ? 1 : 0;
+	state_array->state[0].wrprot = 0; /* Not available on Shannon. */
+	state_array->state[0].bvd1 = 1; 
+	state_array->state[0].bvd2 = 1; 
+	state_array->state[0].vs_3v  = 1; /* FIXME Can only apply 3.3V on Shannon. */
+	state_array->state[0].vs_Xv  = 0;
+
+	state_array->state[1].detect = (levels & SHANNON_GPIO_EJECT_1) ? 0 : 1;
+	state_array->state[1].ready  = (levels & SHANNON_GPIO_RDY_1) ? 1 : 0;
+	state_array->state[1].wrprot = 0; /* Not available on Shannon. */
+	state_array->state[1].bvd1 = 1; 
+	state_array->state[1].bvd2 = 1; 
+	state_array->state[1].vs_3v  = 1; /* FIXME Can only apply 3.3V on Shannon. */
+	state_array->state[1].vs_Xv  = 0;
+
+	return 1;
+}
+
+static int shannon_pcmcia_get_irq_info(struct pcmcia_irq_info *info)
+{
+	if (info->sock == 0)
+		info->irq = SHANNON_IRQ_GPIO_RDY_0;
+	else if (info->sock == 1)
+		info->irq = SHANNON_IRQ_GPIO_RDY_1;
+	else return -1;
+	
+	return 0;
+}
+
+static int shannon_pcmcia_configure_socket(const struct pcmcia_configure *configure)
+{
+
+	switch (configure->vcc) {
+	case 0:	/* power off */;
+		printk(KERN_WARNING __FUNCTION__"(): CS asked for 0V, still applying 3.3V..\n");
+		break;
+	case 50:
+		printk(KERN_WARNING __FUNCTION__"(): CS asked for 5V, applying 3.3V..\n");
+	case 33:
+		break;
+	default:
+		printk(KERN_ERR __FUNCTION__"(): unrecognized Vcc %u\n",
+		       configure->vcc);
+		return -1;
+	}
+
+	printk(KERN_WARNING __FUNCTION__"(): Warning, Can't perform reset\n");
+	
+	/* Silently ignore Vpp, output enable, speaker enable. */
+
+	return 0;
+}
+
+static int shannon_pcmcia_socket_init(int sock)
+{
+	if (sock == 0)
+		set_GPIO_IRQ_edge(SHANNON_GPIO_EJECT_0, GPIO_BOTH_EDGES);
+	else if (sock == 1)
+		set_GPIO_IRQ_edge(SHANNON_GPIO_EJECT_1, GPIO_BOTH_EDGES);
+
+	return 0;
+}
+
+static int shannon_pcmcia_socket_suspend(int sock)
+{
+	if (sock == 0)
+		set_GPIO_IRQ_edge(SHANNON_GPIO_EJECT_0, GPIO_NO_EDGES);
+	else if (sock == 1)
+		set_GPIO_IRQ_edge(SHANNON_GPIO_EJECT_1, GPIO_NO_EDGES);
+
+	return 0;
+}
+
+struct pcmcia_low_level shannon_pcmcia_ops = {
+	init:			shannon_pcmcia_init,
+	shutdown:		shannon_pcmcia_shutdown,
+	socket_state:		shannon_pcmcia_socket_state,
+	get_irq_info:		shannon_pcmcia_get_irq_info,
+	configure_socket:	shannon_pcmcia_configure_socket,
+
+	socket_init:		shannon_pcmcia_socket_init,
+	socket_suspend:		shannon_pcmcia_socket_suspend,
+};