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media: i2c: gc8034: fix power on & off sequence

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Signed-off-by: Wang Panzhenzhuan <randy.wang@rock-chips.com>
Change-Id: Ia2b28d49662290de2784f9340a405b5061c6d76f
This commit is contained in:
Wang Panzhenzhuan
2022-06-21 01:54:34 +00:00
committed by Tao Huang
parent e654f9bb99
commit e1489b2e38
1 changed files with 15 additions and 10 deletions
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25
drivers/media/i2c/gc8034.c
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@@ -2525,11 +2525,7 @@ static int __gc8034_power_on(struct gc8034 *gc8034)
dev_warn(dev, "Failed to set xvclk rate (24MHz)\n");
if (clk_get_rate(gc8034->xvclk) != GC8034_XVCLK_FREQ)
dev_warn(dev, "xvclk mismatched, modes are based on 24MHz\n");
ret = clk_prepare_enable(gc8034->xvclk);
if (ret < 0) {
dev_err(dev, "Failed to enable xvclk\n");
return ret;
}
if (!IS_ERR(gc8034->reset_gpio))
gpiod_set_value_cansleep(gc8034->reset_gpio, 1);
@@ -2539,14 +2535,21 @@ static int __gc8034_power_on(struct gc8034 *gc8034)
goto disable_clk;
}
usleep_range(1000, 1100);
if (!IS_ERR(gc8034->reset_gpio))
gpiod_set_value_cansleep(gc8034->reset_gpio, 0);
usleep_range(100, 200);
ret = clk_prepare_enable(gc8034->xvclk);
if (ret < 0) {
dev_err(dev, "Failed to enable xvclk\n");
return ret;
}
usleep_range(500, 1000);
usleep_range(1000, 1100);
if (!IS_ERR(gc8034->pwdn_gpio))
gpiod_set_value_cansleep(gc8034->pwdn_gpio, 0);
usleep_range(500, 1000);
if (!IS_ERR(gc8034->reset_gpio))
gpiod_set_value_cansleep(gc8034->reset_gpio, 0);
/* 8192 cycles prior to first SCCB transaction */
delay_us = gc8034_cal_delay(8192);
usleep_range(delay_us, delay_us * 2);
@@ -2565,9 +2568,11 @@ static void __gc8034_power_off(struct gc8034 *gc8034)
if (!IS_ERR(gc8034->pwdn_gpio))
gpiod_set_value_cansleep(gc8034->pwdn_gpio, 1);
clk_disable_unprepare(gc8034->xvclk);
if (!IS_ERR(gc8034->reset_gpio))
gpiod_set_value_cansleep(gc8034->reset_gpio, 1);
clk_disable_unprepare(gc8034->xvclk);
if (!IS_ERR_OR_NULL(gc8034->pins_sleep)) {
ret = pinctrl_select_state(gc8034->pinctrl,
gc8034->pins_sleep);