[ARM] pxa/poodle: convert to use the new GPIO API

Direct manipulation of GPIO registers are no longer encouraged, use
the new GPIO API instead. Since the GPIO has to be requested before
use, .startup and .shutdown are added to the IrDA device platform
data to request and free the GPIO.

Signed-off-by: Eric Miao <eric.miao@marvell.com>
Acked-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/mach-pxa/poodle.c b/arch/arm/mach-pxa/poodle.c
index 8972dccab5cf95c9f2ab7b13a1f7d18420a30381..00f0c897e5f81795f14a68d30d9496479afd6447 100644 (file)
--- a/arch/arm/mach-pxa/poodle.c
+++ b/arch/arm/mach-pxa/poodle.c
@@ -20,6 +20,7 @@
 #include <linux/fb.h>
 #include <linux/pm.h>
 #include <linux/delay.h>
+#include <linux/gpio.h>
 
 #include <mach/hardware.h>
 #include <asm/mach-types.h>
@@ -208,19 +209,51 @@ static int poodle_mci_init(struct device *dev, irq_handler_t poodle_detect_int,
        /* setup GPIO for PXA25x MMC controller */
        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);
+
+       err = gpio_request(POODLE_GPIO_nSD_DETECT, "nSD_DETECT");
+       if (err)
+               goto err_out;
+
+       err = gpio_request(POODLE_GPIO_nSD_WP, "nSD_WP");
+       if (err)
+               goto err_free_1;
+
+       err = gpio_request(POODLE_GPIO_SD_PWR, "SD_PWR");
+       if (err)
+               goto err_free_2;
+
+       err = gpio_request(POODLE_GPIO_SD_PWR1, "SD_PWR1");
+       if (err)
+               goto err_free_3;
+
+       gpio_direction_input(POODLE_GPIO_nSD_DETECT);
+       gpio_direction_input(POODLE_GPIO_nSD_WP);
+
+       gpio_direction_output(POODLE_GPIO_SD_PWR, 0);
+       gpio_direction_output(POODLE_GPIO_SD_PWR1, 0);
 
        poodle_mci_platform_data.detect_delay = msecs_to_jiffies(250);
 
        err = request_irq(POODLE_IRQ_GPIO_nSD_DETECT, poodle_detect_int,
                          IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
                          "MMC card detect", data);
-       if (err)
-               printk(KERN_ERR "poodle_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
+       if (err) {
+               pr_err("%s: MMC/SD: can't request MMC card detect IRQ\n",
+                               __func__);
+               goto err_free_4;
+       }
+
+       return 0;
 
+err_free_4:
+       gpio_free(POODLE_GPIO_SD_PWR1);
+err_free_3:
+       gpio_free(POODLE_GPIO_SD_PWR);
+err_free_2:
+       gpio_free(POODLE_GPIO_nSD_WP);
+err_free_1:
+       gpio_free(POODLE_GPIO_nSD_DETECT);
+err_out:
        return err;
 }
 
@@ -228,18 +261,19 @@ 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) {
-               GPSR(POODLE_GPIO_SD_PWR) = GPIO_bit(POODLE_GPIO_SD_PWR);
+       if ((1 << vdd) & p_d->ocr_mask) {
+               gpio_set_value(POODLE_GPIO_SD_PWR, 1);
                mdelay(2);
-               GPSR(POODLE_GPIO_SD_PWR1) = GPIO_bit(POODLE_GPIO_SD_PWR1);
+               gpio_set_value(POODLE_GPIO_SD_PWR1, 1);
        } else {
-               GPCR(POODLE_GPIO_SD_PWR1) = GPIO_bit(POODLE_GPIO_SD_PWR1);
-               GPCR(POODLE_GPIO_SD_PWR) = GPIO_bit(POODLE_GPIO_SD_PWR);
+               gpio_set_value(POODLE_GPIO_SD_PWR1, 0);
+               gpio_set_value(POODLE_GPIO_SD_PWR, 0);
        }
 }
 
 static int poodle_mci_get_ro(struct device *dev)
 {
+       return !!gpio_get_value(POODLE_GPIO_nSD_WP);
        return GPLR(POODLE_GPIO_nSD_WP) & GPIO_bit(POODLE_GPIO_nSD_WP);
 }
 
@@ -247,6 +281,10 @@ static int poodle_mci_get_ro(struct device *dev)
 static void poodle_mci_exit(struct device *dev, void *data)
 {
        free_irq(POODLE_IRQ_GPIO_nSD_DETECT, data);
+       gpio_free(POODLE_GPIO_SD_PWR1);
+       gpio_free(POODLE_GPIO_SD_PWR);
+       gpio_free(POODLE_GPIO_nSD_WP);
+       gpio_free(POODLE_GPIO_nSD_DETECT);
 }
 
 static struct pxamci_platform_data poodle_mci_platform_data = {
@@ -263,17 +301,32 @@ static struct pxamci_platform_data poodle_mci_platform_data = {
  */
 static void poodle_irda_transceiver_mode(struct device *dev, int mode)
 {
-       if (mode & IR_OFF) {
-               GPSR(POODLE_GPIO_IR_ON) = GPIO_bit(POODLE_GPIO_IR_ON);
-       } else {
-               GPCR(POODLE_GPIO_IR_ON) = GPIO_bit(POODLE_GPIO_IR_ON);
-       }
+       gpio_set_value(POODLE_GPIO_IR_ON, mode & IR_OFF);
        pxa2xx_transceiver_mode(dev, mode);
 }
 
+static int poodle_irda_startup(struct device *dev)
+{
+       int err;
+
+       err = gpio_request(POODLE_GPIO_IR_ON, "IR_ON");
+       if (err)
+               return err;
+
+       gpio_direction_output(POODLE_GPIO_IR_ON, 1);
+       return 0;
+}
+
+static void poodle_irda_shutdown(struct device *dev)
+{
+       gpio_free(POODLE_GPIO_IR_ON);
+}
+
 static struct pxaficp_platform_data poodle_ficp_platform_data = {
-       .transceiver_cap  = IR_SIRMODE | IR_OFF,
-       .transceiver_mode = poodle_irda_transceiver_mode,
+       .transceiver_cap        = IR_SIRMODE | IR_OFF,
+       .transceiver_mode       = poodle_irda_transceiver_mode,
+       .startup                = poodle_irda_startup,
+       .shutdown               = poodle_irda_shutdown,
 };