@@ -2,7 +2,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/delay.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/io.h>
#include <asm/proc-fns.h>
#include <asm/system_misc.h>
@@ -14,33 +14,20 @@
static void do_hw_reset(void);
-static int reset_gpio = -1;
+static struct gpio_desc *reset_gpio = NULL;
-int init_gpio_reset(int gpio, int output, int level)
+int init_gpio_reset(int output, int level)
{
- int rc;
-
- rc = gpio_request(gpio, "reset generator");
- if (rc) {
- printk(KERN_ERR "Can't request reset_gpio\n");
- goto out;
+ reset_gpio = gpiod_get(NULL, "reset generator", GPIOD_ASIS);
+ if (IS_ERR(reset_gpio)) {
+ pr_err("Can't request reset_gpio: %pe\n", reset_gpio);
+ return PTR_ERR(reset_gpio);
}
if (output)
- rc = gpio_direction_output(gpio, level);
+ return gpiod_direction_output(reset_gpio, level);
else
- rc = gpio_direction_input(gpio);
- if (rc) {
- printk(KERN_ERR "Can't configure reset_gpio\n");
- gpio_free(gpio);
- goto out;
- }
-
-out:
- if (!rc)
- reset_gpio = gpio;
-
- return rc;
+ return gpiod_direction_input(reset_gpio);
}
/*
@@ -50,16 +37,16 @@ int init_gpio_reset(int gpio, int output, int level)
*/
static void do_gpio_reset(void)
{
- BUG_ON(reset_gpio == -1);
+ BUG_ON(IS_ERR(reset_gpio));
/* drive it low */
- gpio_direction_output(reset_gpio, 0);
+ gpiod_direction_output(reset_gpio, 0);
mdelay(2);
/* rising edge or drive high */
- gpio_set_value(reset_gpio, 1);
+ gpiod_set_value(reset_gpio, 1);
mdelay(2);
/* falling edge */
- gpio_set_value(reset_gpio, 0);
+ gpiod_set_value(reset_gpio, 0);
/* give it some time */
mdelay(10);
@@ -13,10 +13,9 @@ extern void pxa_register_wdt(unsigned int reset_status);
/**
* init_gpio_reset() - register GPIO as reset generator
- * @gpio: gpio nr
* @output: set gpio as output instead of input during normal work
* @level: output level
*/
-extern int init_gpio_reset(int gpio, int output, int level);
+extern int init_gpio_reset(int output, int level);
#endif /* __ASM_ARCH_RESET_H */
@@ -1024,9 +1024,13 @@ static void spitz_restart(enum reboot_mode mode, const char *cmd)
spitz_poweroff();
}
+GPIO_LOOKUP_SINGLE(spitz_reset_gpio_table, NULL, "pxa-gpio",
+ SPITZ_GPIO_ON_RESET, "reset generator", GPIO_ACTIVE_HIGH);
+
static void __init spitz_init(void)
{
- init_gpio_reset(SPITZ_GPIO_ON_RESET, 1, 0);
+ gpiod_add_lookup_table(&spitz_reset_gpio_table);
+ init_gpio_reset(1, 0);
pm_power_off = spitz_poweroff;
PMCR = 0x00;
The PXA reset driver still uses the legacy GPIO interface for configuring and asserting the reset pin. Convert it to use the GPIO descriptor interface. Signed-off-by: Duje Mihanović <duje.mihanovic@skole.hr> --- arch/arm/mach-pxa/reset.c | 39 +++++++++++++-------------------------- arch/arm/mach-pxa/reset.h | 3 +-- arch/arm/mach-pxa/spitz.c | 6 +++++- 3 files changed, 19 insertions(+), 29 deletions(-)