[ARM] 2882/1: pxa2xx_sharpsl: Update PCMCIA driver to support variety of new hardware
Patch from Richard Purdie
This patch updates the PCMCIA pxa2xx_sharpsl driver to support multiple scoop
devices by adding a scoop to pcmcia slot mapping structure. It adds platform
support for poodle, is known to work on spitz (which is dual slot) and
should also support collie with a minor amount of further work.
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/drivers/pcmcia/pxa2xx_sharpsl.c b/drivers/pcmcia/pxa2xx_sharpsl.c
index 7bac2f7..a1178a6 100644
--- a/drivers/pcmcia/pxa2xx_sharpsl.c
+++ b/drivers/pcmcia/pxa2xx_sharpsl.c
@@ -20,27 +20,18 @@
#include <asm/hardware.h>
#include <asm/irq.h>
-
#include <asm/hardware/scoop.h>
-#include <asm/arch/corgi.h>
#include <asm/arch/pxa-regs.h>
#include "soc_common.h"
#define NO_KEEP_VS 0x0001
-static unsigned char keep_vs;
-static unsigned char keep_rd;
-
-static struct pcmcia_irqs irqs[] = {
- { 0, CORGI_IRQ_GPIO_CF_CD, "PCMCIA0 CD"},
-};
-
-static void sharpsl_pcmcia_init_reset(void)
+static void sharpsl_pcmcia_init_reset(struct scoop_pcmcia_dev *scoopdev)
{
- reset_scoop(&corgiscoop_device.dev);
- keep_vs = NO_KEEP_VS;
- keep_rd = 0;
+ reset_scoop(scoopdev->dev);
+ scoopdev->keep_vs = NO_KEEP_VS;
+ scoopdev->keep_rd = 0;
}
static int sharpsl_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
@@ -71,29 +62,35 @@
pxa_gpio_mode(GPIO57_nIOIS16_MD);
/* Register interrupts */
- ret = soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
+ if (scoop_devs[skt->nr].cd_irq >= 0) {
+ struct pcmcia_irqs cd_irq;
- if (ret) {
- printk(KERN_ERR "Request for Compact Flash IRQ failed\n");
- return ret;
+ cd_irq.sock = skt->nr;
+ cd_irq.irq = scoop_devs[skt->nr].cd_irq;
+ cd_irq.str = scoop_devs[skt->nr].cd_irq_str;
+ ret = soc_pcmcia_request_irqs(skt, &cd_irq, 1);
+
+ if (ret) {
+ printk(KERN_ERR "Request for Compact Flash IRQ failed\n");
+ return ret;
+ }
}
- /* Enable interrupt */
- write_scoop_reg(&corgiscoop_device.dev, SCOOP_IMR, 0x00C0);
- write_scoop_reg(&corgiscoop_device.dev, SCOOP_MCR, 0x0101);
- keep_vs = NO_KEEP_VS;
-
- skt->irq = CORGI_IRQ_GPIO_CF_IRQ;
+ skt->irq = scoop_devs[skt->nr].irq;
return 0;
}
static void sharpsl_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
{
- soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
+ if (scoop_devs[skt->nr].cd_irq >= 0) {
+ struct pcmcia_irqs cd_irq;
- /* CF_BUS_OFF */
- sharpsl_pcmcia_init_reset();
+ cd_irq.sock = skt->nr;
+ cd_irq.irq = scoop_devs[skt->nr].cd_irq;
+ cd_irq.str = scoop_devs[skt->nr].cd_irq_str;
+ soc_pcmcia_free_irqs(skt, &cd_irq, 1);
+ }
}
@@ -101,31 +98,32 @@
struct pcmcia_state *state)
{
unsigned short cpr, csr;
+ struct device *scoop = scoop_devs[skt->nr].dev;
- cpr = read_scoop_reg(&corgiscoop_device.dev, SCOOP_CPR);
+ cpr = read_scoop_reg(scoop_devs[skt->nr].dev, SCOOP_CPR);
- write_scoop_reg(&corgiscoop_device.dev, SCOOP_IRM, 0x00FF);
- write_scoop_reg(&corgiscoop_device.dev, SCOOP_ISR, 0x0000);
- write_scoop_reg(&corgiscoop_device.dev, SCOOP_IRM, 0x0000);
- csr = read_scoop_reg(&corgiscoop_device.dev, SCOOP_CSR);
+ write_scoop_reg(scoop, SCOOP_IRM, 0x00FF);
+ write_scoop_reg(scoop, SCOOP_ISR, 0x0000);
+ write_scoop_reg(scoop, SCOOP_IRM, 0x0000);
+ csr = read_scoop_reg(scoop, SCOOP_CSR);
if (csr & 0x0004) {
/* card eject */
- write_scoop_reg(&corgiscoop_device.dev, SCOOP_CDR, 0x0000);
- keep_vs = NO_KEEP_VS;
+ write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
+ scoop_devs[skt->nr].keep_vs = NO_KEEP_VS;
}
- else if (!(keep_vs & NO_KEEP_VS)) {
+ else if (!(scoop_devs[skt->nr].keep_vs & NO_KEEP_VS)) {
/* keep vs1,vs2 */
- write_scoop_reg(&corgiscoop_device.dev, SCOOP_CDR, 0x0000);
- csr |= keep_vs;
+ write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
+ csr |= scoop_devs[skt->nr].keep_vs;
}
else if (cpr & 0x0003) {
/* power on */
- write_scoop_reg(&corgiscoop_device.dev, SCOOP_CDR, 0x0000);
- keep_vs = (csr & 0x00C0);
+ write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
+ scoop_devs[skt->nr].keep_vs = (csr & 0x00C0);
}
else {
/* card detect */
- write_scoop_reg(&corgiscoop_device.dev, SCOOP_CDR, 0x0002);
+ write_scoop_reg(scoop, SCOOP_CDR, 0x0002);
}
state->detect = (csr & 0x0004) ? 0 : 1;
@@ -147,6 +145,7 @@
const socket_state_t *state)
{
unsigned long flags;
+ struct device *scoop = scoop_devs[skt->nr].dev;
unsigned short cpr, ncpr, ccr, nccr, mcr, nmcr, imr, nimr;
@@ -166,10 +165,10 @@
local_irq_save(flags);
- nmcr = (mcr = read_scoop_reg(&corgiscoop_device.dev, SCOOP_MCR)) & ~0x0010;
- ncpr = (cpr = read_scoop_reg(&corgiscoop_device.dev, SCOOP_CPR)) & ~0x0083;
- nccr = (ccr = read_scoop_reg(&corgiscoop_device.dev, SCOOP_CCR)) & ~0x0080;
- nimr = (imr = read_scoop_reg(&corgiscoop_device.dev, SCOOP_IMR)) & ~0x003E;
+ nmcr = (mcr = read_scoop_reg(scoop, SCOOP_MCR)) & ~0x0010;
+ ncpr = (cpr = read_scoop_reg(scoop, SCOOP_CPR)) & ~0x0083;
+ nccr = (ccr = read_scoop_reg(scoop, SCOOP_CCR)) & ~0x0080;
+ nimr = (imr = read_scoop_reg(scoop, SCOOP_IMR)) & ~0x003E;
ncpr |= (state->Vcc == 33) ? 0x0001 :
(state->Vcc == 50) ? 0x0002 : 0;
@@ -184,22 +183,22 @@
((skt->status&SS_WRPROT) ? 0x0008 : 0);
if (!(ncpr & 0x0003)) {
- keep_rd = 0;
- } else if (!keep_rd) {
+ scoop_devs[skt->nr].keep_rd = 0;
+ } else if (!scoop_devs[skt->nr].keep_rd) {
if (nccr & 0x0080)
- keep_rd = 1;
+ scoop_devs[skt->nr].keep_rd = 1;
else
nccr |= 0x0080;
}
if (mcr != nmcr)
- write_scoop_reg(&corgiscoop_device.dev, SCOOP_MCR, nmcr);
+ write_scoop_reg(scoop, SCOOP_MCR, nmcr);
if (cpr != ncpr)
- write_scoop_reg(&corgiscoop_device.dev, SCOOP_CPR, ncpr);
+ write_scoop_reg(scoop, SCOOP_CPR, ncpr);
if (ccr != nccr)
- write_scoop_reg(&corgiscoop_device.dev, SCOOP_CCR, nccr);
+ write_scoop_reg(scoop, SCOOP_CCR, nccr);
if (imr != nimr)
- write_scoop_reg(&corgiscoop_device.dev, SCOOP_IMR, nimr);
+ write_scoop_reg(scoop, SCOOP_IMR, nimr);
local_irq_restore(flags);
@@ -208,10 +207,18 @@
static void sharpsl_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
{
+ sharpsl_pcmcia_init_reset(&scoop_devs[skt->nr]);
+
+ /* Enable interrupt */
+ write_scoop_reg(scoop_devs[skt->nr].dev, SCOOP_IMR, 0x00C0);
+ write_scoop_reg(scoop_devs[skt->nr].dev, SCOOP_MCR, 0x0101);
+ scoop_devs[skt->nr].keep_vs = NO_KEEP_VS;
}
static void sharpsl_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
{
+ /* CF_BUS_OFF */
+ sharpsl_pcmcia_init_reset(&scoop_devs[skt->nr]);
}
static struct pcmcia_low_level sharpsl_pcmcia_ops = {
@@ -223,7 +230,7 @@
.socket_init = sharpsl_pcmcia_socket_init,
.socket_suspend = sharpsl_pcmcia_socket_suspend,
.first = 0,
- .nr = 1,
+ .nr = 0,
};
static struct platform_device *sharpsl_pcmcia_device;
@@ -232,12 +239,15 @@
{
int ret;
+ sharpsl_pcmcia_ops.nr=scoop_num;
sharpsl_pcmcia_device = kmalloc(sizeof(*sharpsl_pcmcia_device), GFP_KERNEL);
if (!sharpsl_pcmcia_device)
return -ENOMEM;
+
memset(sharpsl_pcmcia_device, 0, sizeof(*sharpsl_pcmcia_device));
sharpsl_pcmcia_device->name = "pxa2xx-pcmcia";
sharpsl_pcmcia_device->dev.platform_data = &sharpsl_pcmcia_ops;
+ sharpsl_pcmcia_device->dev.parent=scoop_devs[0].dev;
ret = platform_device_register(sharpsl_pcmcia_device);
if (ret)