summaryrefslogtreecommitdiff
path: root/drivers/pcmcia/sa1100_h3600.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/pcmcia/sa1100_h3600.c
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/pcmcia/sa1100_h3600.c')
-rw-r--r--drivers/pcmcia/sa1100_h3600.c142
1 files changed, 142 insertions, 0 deletions
diff --git a/drivers/pcmcia/sa1100_h3600.c b/drivers/pcmcia/sa1100_h3600.c
new file mode 100644
index 000000000000..64fd5e37f2d2
--- /dev/null
+++ b/drivers/pcmcia/sa1100_h3600.c
@@ -0,0 +1,142 @@
+/*
+ * drivers/pcmcia/sa1100_h3600.c
+ *
+ * PCMCIA implementation routines for H3600
+ *
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/device.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+
+#include <asm/hardware.h>
+#include <asm/irq.h>
+#include <asm/mach-types.h>
+#include <asm/arch/h3600.h>
+
+#include "sa1100_generic.h"
+
+static struct pcmcia_irqs irqs[] = {
+ { 0, IRQ_GPIO_H3600_PCMCIA_CD0, "PCMCIA CD0" },
+ { 1, IRQ_GPIO_H3600_PCMCIA_CD1, "PCMCIA CD1" }
+};
+
+static int h3600_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
+{
+ skt->irq = skt->nr ? IRQ_GPIO_H3600_PCMCIA_IRQ1
+ : IRQ_GPIO_H3600_PCMCIA_IRQ0;
+
+
+ return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
+}
+
+static void h3600_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
+{
+ soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
+
+ /* Disable CF bus: */
+ clr_h3600_egpio(IPAQ_EGPIO_OPT_NVRAM_ON);
+ clr_h3600_egpio(IPAQ_EGPIO_OPT_ON);
+ set_h3600_egpio(IPAQ_EGPIO_OPT_RESET);
+}
+
+static void
+h3600_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
+{
+ unsigned long levels = GPLR;
+
+ switch (skt->nr) {
+ case 0:
+ state->detect = levels & GPIO_H3600_PCMCIA_CD0 ? 0 : 1;
+ state->ready = levels & GPIO_H3600_PCMCIA_IRQ0 ? 1 : 0;
+ state->bvd1 = 0;
+ state->bvd2 = 0;
+ state->wrprot = 0; /* Not available on H3600. */
+ state->vs_3v = 0;
+ state->vs_Xv = 0;
+ break;
+
+ case 1:
+ state->detect = levels & GPIO_H3600_PCMCIA_CD1 ? 0 : 1;
+ state->ready = levels & GPIO_H3600_PCMCIA_IRQ1 ? 1 : 0;
+ state->bvd1 = 0;
+ state->bvd2 = 0;
+ state->wrprot = 0; /* Not available on H3600. */
+ state->vs_3v = 0;
+ state->vs_Xv = 0;
+ break;
+ }
+}
+
+static int
+h3600_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
+{
+ if (state->Vcc != 0 && state->Vcc != 33 && state->Vcc != 50) {
+ printk(KERN_ERR "h3600_pcmcia: unrecognized Vcc %u.%uV\n",
+ state->Vcc / 10, state->Vcc % 10);
+ return -1;
+ }
+
+ if (state->flags & SS_RESET)
+ set_h3600_egpio(IPAQ_EGPIO_CARD_RESET);
+ else
+ clr_h3600_egpio(IPAQ_EGPIO_CARD_RESET);
+
+ /* Silently ignore Vpp, output enable, speaker enable. */
+
+ return 0;
+}
+
+static void h3600_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
+{
+ /* Enable CF bus: */
+ set_h3600_egpio(IPAQ_EGPIO_OPT_NVRAM_ON);
+ set_h3600_egpio(IPAQ_EGPIO_OPT_ON);
+ clr_h3600_egpio(IPAQ_EGPIO_OPT_RESET);
+
+ msleep(10);
+
+ soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs));
+}
+
+static void h3600_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
+{
+ soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs));
+
+ /*
+ * FIXME: This doesn't fit well. We don't have the mechanism in
+ * the generic PCMCIA layer to deal with the idea of two sockets
+ * on one bus. We rely on the cs.c behaviour shutting down
+ * socket 0 then socket 1.
+ */
+ if (skt->nr == 1) {
+ clr_h3600_egpio(IPAQ_EGPIO_OPT_ON);
+ clr_h3600_egpio(IPAQ_EGPIO_OPT_NVRAM_ON);
+ /* hmm, does this suck power? */
+ set_h3600_egpio(IPAQ_EGPIO_OPT_RESET);
+ }
+}
+
+struct pcmcia_low_level h3600_pcmcia_ops = {
+ .owner = THIS_MODULE,
+ .hw_init = h3600_pcmcia_hw_init,
+ .hw_shutdown = h3600_pcmcia_hw_shutdown,
+ .socket_state = h3600_pcmcia_socket_state,
+ .configure_socket = h3600_pcmcia_configure_socket,
+
+ .socket_init = h3600_pcmcia_socket_init,
+ .socket_suspend = h3600_pcmcia_socket_suspend,
+};
+
+int __init pcmcia_h3600_init(struct device *dev)
+{
+ int ret = -ENODEV;
+
+ if (machine_is_h3600())
+ ret = sa11xx_drv_pcmcia_probe(dev, &h3600_pcmcia_ops, 0, 2);
+
+ return ret;
+}