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[ARM] 3561/1: Poodle: Correct the MMC/SD power control

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Patch from Richard Purdie

Correct the Poodle power control for the MMC/SD port. Also
add write protection switch support.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Richard Purdie 2006-06-19 19:58:51 +01:00 committed by Russell King
parent 74617fb6b8
commit 88660351cb
2 changed files with 20 additions and 4 deletions
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22
arch/arm/mach-pxa/poodle.c
View File

@ -19,6 +19,7 @@
#include <linux/platform_device.h>
#include <linux/fb.h>
#include <linux/pm.h>
#include <linux/delay.h>
#include <asm/hardware.h>
#include <asm/mach-types.h>
@ -143,7 +144,9 @@ static int poodle_mci_init(struct device *dev, irqreturn_t (*poodle_detect_int)(
pxa_gpio_mode(GPIO6_MMCCLK_MD);
pxa_gpio_mode(GPIO8_MMCCS0_MD);
pxa_gpio_mode(POODLE_GPIO_nSD_DETECT | GPIO_IN);
pxa_gpio_mode(POODLE_GPIO_nSD_WP | GPIO_IN);
pxa_gpio_mode(POODLE_GPIO_SD_PWR | GPIO_OUT);
pxa_gpio_mode(POODLE_GPIO_SD_PWR1 | GPIO_OUT);
poodle_mci_platform_data.detect_delay = msecs_to_jiffies(250);
@ -162,12 +165,22 @@ static void poodle_mci_setpower(struct device *dev, unsigned int vdd)
{
struct pxamci_platform_data* p_d = dev->platform_data;
if (( 1 << vdd) & p_d->ocr_mask)
GPSR1 = GPIO_bit(POODLE_GPIO_SD_PWR);
else
GPCR1 = GPIO_bit(POODLE_GPIO_SD_PWR);
if (( 1 << vdd) & p_d->ocr_mask) {
GPSR(POODLE_GPIO_SD_PWR) = GPIO_bit(POODLE_GPIO_SD_PWR);
mdelay(2);
GPSR(POODLE_GPIO_SD_PWR1) = GPIO_bit(POODLE_GPIO_SD_PWR1);
} else {
GPCR(POODLE_GPIO_SD_PWR1) = GPIO_bit(POODLE_GPIO_SD_PWR1);
GPCR(POODLE_GPIO_SD_PWR) = GPIO_bit(POODLE_GPIO_SD_PWR);
}
}
static int poodle_mci_get_ro(struct device *dev)
{
return GPLR(POODLE_GPIO_nSD_WP) & GPIO_bit(POODLE_GPIO_nSD_WP);
}
static void poodle_mci_exit(struct device *dev, void *data)
{
free_irq(POODLE_IRQ_GPIO_nSD_DETECT, data);
@ -176,6 +189,7 @@ static void poodle_mci_exit(struct device *dev, void *data)
static struct pxamci_platform_data poodle_mci_platform_data = {
.ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
.init = poodle_mci_init,
.get_ro = poodle_mci_get_ro,
.setpower = poodle_mci_setpower,
.exit = poodle_mci_exit,
};

2
include/asm-arm/arch-pxa/poodle.h
View File

@ -31,6 +31,7 @@
#define POODLE_GPIO_CF_CD (14)
#define POODLE_GPIO_CF_STSCHG (14)
#define POODLE_GPIO_SD_PWR (33)
#define POODLE_GPIO_SD_PWR1 (3)
#define POODLE_GPIO_nSD_CLK (6)
#define POODLE_GPIO_nSD_WP (7)
#define POODLE_GPIO_nSD_INT (8)
@ -42,6 +43,7 @@
#define POODLE_GPIO_BYPASS_ON (36)
#define POODLE_GPIO_CHRG_ON (38)
#define POODLE_GPIO_CHRG_FULL (16)
#define POODLE_GPIO_DISCHARGE_ON (42) /* Enable battery discharge */
/* PXA GPIOs */
#define POODLE_IRQ_GPIO_ON_KEY IRQ_GPIO(0)