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drm/rockchip: ebc_dev: tps65185: improve power on/off and temperture read

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Signed-off-by: Zorro Liu <lyx@rock-chips.com>
Change-Id: Id11b7574fa9125f875a55c9a3823a5ade3d28276
This commit is contained in:
Zorro Liu
2021-01-26 21:25:03 +08:00
committed by Tao Huang
parent ed6cd522c1
commit 9b6b975254
1 changed files with 42 additions and 11 deletions
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53
drivers/gpu/drm/rockchip/ebc-dev/pmic/tps65185.c
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@@ -122,6 +122,8 @@ struct papyrus_sess {
struct gpio_desc *wake_up_pin;
struct gpio_desc *vcom_ctl_pin;
struct mutex power_lock;
struct workqueue_struct *tmp_monitor_wq;
struct delayed_work tmp_delay_work;
};
struct papyrus_hw_state {
@@ -202,7 +204,7 @@ static void papyrus_hw_get_int_state(struct papyrus_sess *sess, struct papyrus_h
if (stat)
dev_err(&sess->client->dev, "i2c error: %d\n", stat);
}
#if 0
static bool papyrus_hw_power_ack(struct papyrus_sess *sess, int up)
{
struct papyrus_hw_state hwst;
@@ -235,7 +237,7 @@ static bool papyrus_hw_power_ack(struct papyrus_sess *sess, int up)
return (st == up);
}
#endif
static void papyrus_hw_send_powerup(struct papyrus_sess *sess)
{
int stat = 0;
@@ -252,7 +254,7 @@ static void papyrus_hw_send_powerup(struct papyrus_sess *sess)
sess->enable_reg_shadow |= V3P3_EN_MASK;
stat |= papyrus_hw_setreg(sess, PAPYRUS_ADDR_ENABLE, sess->enable_reg_shadow);
msleep(PAPYRUS_V3P3OFF_DELAY_MS);
usleep_range(2 * 1000, 3 * 1000);
sess->enable_reg_shadow = (0x80 | 0x30 | 0x0F);
stat |= papyrus_hw_setreg(sess, PAPYRUS_ADDR_ENABLE, sess->enable_reg_shadow);
@@ -270,8 +272,7 @@ static void papyrus_hw_send_powerdown(struct papyrus_sess *sess)
sess->enable_reg_shadow = (0x40 | 0x20 | 0x0F);
stat = papyrus_hw_setreg(sess, PAPYRUS_ADDR_ENABLE, sess->enable_reg_shadow);
msleep(PAPYRUS_V3P3OFF_DELAY_MS);
usleep_range(2 * 1000, 3 * 1000);
sess->enable_reg_shadow &= ~V3P3_EN_MASK;
stat |= papyrus_hw_setreg(sess, PAPYRUS_ADDR_ENABLE, sess->enable_reg_shadow);
if (stat)
@@ -329,7 +330,7 @@ static int papyrus_hw_init(struct papyrus_sess *sess)
if (!IS_ERR_OR_NULL(sess->pwr_en_pin)) {
gpiod_direction_output(sess->pwr_en_pin, 1);
usleep_range(10 * 1000, 11 * 1000);
usleep_range(2 * 1000, 3 * 1000);
}
gpiod_direction_output(sess->wake_up_pin, 0);
/* wait to reset papyrus */
@@ -363,8 +364,9 @@ static int papyrus_hw_read_temperature(struct ebc_pmic *pmic, int *t)
{
struct papyrus_sess *sess = (struct papyrus_sess *)pmic->drvpar;
int stat;
int ntries = 50;
uint8_t tb;
#if 0
int ntries = 50;
stat = papyrus_hw_setreg(sess, PAPYRUS_ADDR_TMST1, 0x80);
if (stat)
@@ -377,6 +379,7 @@ static int papyrus_hw_read_temperature(struct ebc_pmic *pmic, int *t)
return stat;
msleep(PAPYRUS_TEMP_READ_TIME_MS);
#endif
stat = papyrus_hw_getreg(sess, PAPYRUS_ADDR_TMST_VALUE, &tb);
*t = (int)(int8_t)tb;
@@ -392,12 +395,12 @@ static void papyrus_hw_power_req(struct ebc_pmic *pmic, bool up)
if (papyrus_need_reconfig) {
if (up) {
papyrus_hw_send_powerup(sess);
papyrus_hw_power_ack(sess, up);
//papyrus_hw_power_ack(sess, up);
enable_irq(sess->irq);
} else {
disable_irq(sess->irq);
papyrus_hw_send_powerdown(sess);
papyrus_hw_power_ack(sess, up);
//papyrus_hw_power_ack(sess, up);
}
papyrus_need_reconfig = false;
} else {
@@ -477,8 +480,10 @@ static int papyrus_hw_vcom_set(struct ebc_pmic *pmic, int vcom_mv)
static void papyrus_pm_sleep(struct ebc_pmic *pmic)
{
struct papyrus_sess *s = (struct papyrus_sess *)pmic->drvpar;
mutex_lock(&s->power_lock);
cancel_delayed_work_sync(&s->tmp_delay_work);
mutex_lock(&s->power_lock);
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))
@@ -494,12 +499,29 @@ static void papyrus_pm_resume(struct ebc_pmic *pmic)
mutex_lock(&s->power_lock);
if (!IS_ERR_OR_NULL(s->pwr_en_pin)) {
gpiod_direction_output(s->pwr_en_pin, 1);
usleep_range(10 * 1000, 11 * 1000);
usleep_range(2 * 1000, 3 * 1000);
}
gpiod_direction_output(s->wake_up_pin, 1);
gpiod_direction_output(s->vcom_ctl_pin, 1);
usleep_range(2 * 1000, 3 * 1000);
mutex_unlock(&s->power_lock);
//trigger temperature measurement
papyrus_hw_setreg(s, PAPYRUS_ADDR_TMST1, 0x80);
queue_delayed_work(s->tmp_monitor_wq, &s->tmp_delay_work,
msecs_to_jiffies(10000));
}
static void papyrus_tmp_work(struct work_struct *work)
{
struct papyrus_sess *s =
container_of(work, struct papyrus_sess, tmp_delay_work.work);
//trigger temperature measurement
papyrus_hw_setreg(s, PAPYRUS_ADDR_TMST1, 0x80);
queue_delayed_work(s->tmp_monitor_wq, &s->tmp_delay_work,
msecs_to_jiffies(10000));
}
static int papyrus_probe(struct ebc_pmic *pmic, struct i2c_client *client)
@@ -558,6 +580,12 @@ static int papyrus_probe(struct ebc_pmic *pmic, struct i2c_client *client)
return stat;
}
sess->tmp_monitor_wq = alloc_ordered_workqueue("%s",
WQ_MEM_RECLAIM | WQ_FREEZABLE, "tps-tmp-monitor-wq");
INIT_DELAYED_WORK(&sess->tmp_delay_work, papyrus_tmp_work);
queue_delayed_work(sess->tmp_monitor_wq, &sess->tmp_delay_work,
msecs_to_jiffies(10000));
stat = papyrus_hw_init(sess);
if (stat)
return stat;
@@ -567,6 +595,9 @@ static int papyrus_probe(struct ebc_pmic *pmic, struct i2c_client *client)
if (stat)
return stat;
//trigger temperature measurement
papyrus_hw_setreg(sess, PAPYRUS_ADDR_TMST1, 0x80);
pmic->drvpar = sess;
pmic->pmic_get_vcom = papyrus_hw_vcom_get;