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lib: utils/reset: use sbi_timer_mdelay() in gpio reset driver

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We should use sbi_timer_mdelay() instead of custom gpio_mdelay() in
the gpio reset driver.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Xiang W <wxjstz@126.com>
This commit is contained in:
Anup Patel 2021-09-15 13:50:40 +05:30 • committed by Anup Patel
parent 9d0ab35ab4
commit fa59dd317a
1 changed files with 3 additions and 10 deletions
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13
lib/utils/reset/fdt_reset_gpio.c
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@ -14,6 +14,7 @@
#include <sbi/sbi_ecall_interface.h> #include <sbi/sbi_ecall_interface.h>
#include <sbi/sbi_hart.h> #include <sbi/sbi_hart.h>
#include <sbi/sbi_system.h> #include <sbi/sbi_system.h>
#include <sbi/sbi_timer.h>
#include <sbi_utils/fdt/fdt_helper.h> #include <sbi_utils/fdt/fdt_helper.h>
#include <sbi_utils/gpio/fdt_gpio.h> #include <sbi_utils/gpio/fdt_gpio.h>
#include <sbi_utils/reset/fdt_reset.h> #include <sbi_utils/reset/fdt_reset.h>
@ -34,14 +35,6 @@ static struct gpio_reset restart = {
.inactive_delay = 100 .inactive_delay = 100
}; };
/* Custom mdelay function until we have a generic mdelay() API */
static void gpio_mdelay(unsigned long msecs)
{
volatile int i;
while (msecs--)
for (i = 0; i < 100000; i++) ;
}
static int gpio_system_reset_check(u32 type, u32 reason) static int gpio_system_reset_check(u32 type, u32 reason)
{ {
switch (type) { switch (type) {
@ -76,11 +69,11 @@ static void gpio_system_reset(u32 type, u32 reason)
/* drive it active, also inactive->active edge */ /* drive it active, also inactive->active edge */
gpio_direction_output(&reset->pin, 1); gpio_direction_output(&reset->pin, 1);
gpio_mdelay(reset->active_delay); sbi_timer_mdelay(reset->active_delay);
/* drive inactive, also active->inactive edge */ /* drive inactive, also active->inactive edge */
gpio_set(&reset->pin, 0); gpio_set(&reset->pin, 0);
gpio_mdelay(reset->inactive_delay); sbi_timer_mdelay(reset->inactive_delay);
/* drive it active, also inactive->active edge */ /* drive it active, also inactive->active edge */
gpio_set(&reset->pin, 1); gpio_set(&reset->pin, 1);