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drivers: eink pmic: tps65185: add power en pin control

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Signed-off-by: Zorro Liu <lyx@rock-chips.com>
Change-Id: I1e4aaf46baf65408094b9bda17bb2d0a6b6b8836
This commit is contained in:
Zorro Liu
2021-01-11 17:22:33 +08:00
committed by Tao Huang
parent 2c5b90231b
commit ea05a14df8
1 changed files with 16 additions and 0 deletions
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16
drivers/gpu/drm/rockchip/ebc-dev/pmic/tps65185.c
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@@ -116,6 +116,7 @@ struct papyrus_sess {
uint8_t dwnseq0;
uint8_t dwnseq1;
struct gpio_desc *pwr_en_pin;
struct gpio_desc *pwr_up_pin;
struct gpio_desc *wake_up_pin;
struct gpio_desc *vcom_ctl_pin;
@@ -305,6 +306,10 @@ static int papyrus_hw_init(struct papyrus_sess *sess)
{
int stat = 0;
if (!IS_ERR_OR_NULL(sess->pwr_en_pin)) {
gpiod_direction_output(sess->pwr_en_pin, 1);
usleep_range(10 * 1000, 11 * 1000);
}
gpiod_direction_output(sess->wake_up_pin, 0);
/* wait to reset papyrus */
msleep(PAPYRUS_SLEEP_MINIMUM_MS);
@@ -435,12 +440,18 @@ static void papyrus_pm_sleep(struct ebc_pmic *pmic)
gpiod_direction_output(s->vcom_ctl_pin, 0);
gpiod_direction_output(s->wake_up_pin, 0);
if (!IS_ERR_OR_NULL(s->pwr_en_pin))
gpiod_direction_output(s->pwr_en_pin, 0);
}
static void papyrus_pm_resume(struct ebc_pmic *pmic)
{
struct papyrus_sess *s = (struct papyrus_sess *)pmic->drvpar;
if (!IS_ERR_OR_NULL(s->pwr_en_pin)) {
gpiod_direction_output(s->pwr_en_pin, 1);
usleep_range(10 * 1000, 11 * 1000);
}
gpiod_direction_output(s->wake_up_pin, 1);
gpiod_direction_output(s->vcom_ctl_pin, 1);
}
@@ -459,6 +470,11 @@ static int papyrus_probe(struct ebc_pmic *pmic, struct i2c_client *client)
mutex_init(&sess->power_lock);
papyrus_hw_arg_init(sess);
sess->pwr_en_pin = devm_gpiod_get_optional(&client->dev, "poweren", GPIOD_OUT_HIGH);
if (IS_ERR_OR_NULL(sess->pwr_en_pin)) {
dev_err(&client->dev, "tsp65185: failed to find poweren pin, no defined\n");
}
sess->wake_up_pin = devm_gpiod_get_optional(&client->dev, "wakeup", GPIOD_OUT_HIGH);
if (IS_ERR_OR_NULL(sess->wake_up_pin)) {
dev_err(&client->dev, "tsp65185: failed to find wakeup pin\n");