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video: backlight: lm3533: configure core in the probe

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Configure core stuff in the probe.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
This commit is contained in:
Svyatoslav Ryhel
2025-02-21 17:22:47 +02:00
parent c3eb558288
commit 1d4e23d3d4
1 changed files with 24 additions and 7 deletions
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31
drivers/video/lm3533_backlight.c
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@@ -23,6 +23,10 @@
#define LM3533_CONTROL_BANK_A_FULLSCALE_CURRENT 0x1F
#define LM3533_CONTROL_BANK_ENABLE 0x27
#define LM3533_OVP_FREQUENCY_PWM_POLARITY 0x2C
#define BOOST_OVP_MASK GENMASK(2, 1)
#define BOOST_OVP_SHIFT 1
#define BOOST_FREQ_MASK BIT(0)
#define BOOST_FREQ_SHIFT 0
#define LM3533_BRIGHTNESS_REGISTER_A 0x40
#define LM3533_BOOST_OVP_16V 16000000UL
@@ -49,9 +53,6 @@ static int lm3533_backlight_enable(struct udevice *dev)
struct lm3533_backlight_priv *priv = dev_get_priv(dev);
int ret;
dm_gpio_set_value(&priv->enable_gpio, 1);
mdelay(5);
/* HVLED 1 & 2 are controlled by Bank A */
ret = dm_i2c_reg_write(dev, LM3533_SINK_OUTPUT_CONFIG_1, 0x00);
if (ret)
@@ -77,10 +78,6 @@ static int lm3533_backlight_enable(struct udevice *dev)
if (ret)
return ret;
ret = dm_i2c_reg_write(dev, LM3533_OVP_FREQUENCY_PWM_POLARITY, 0x0A);
if (ret)
return ret;
return 0;
}
@@ -159,9 +156,29 @@ static int lm3533_backlight_of_to_plat(struct udevice *dev)
static int lm3533_backlight_probe(struct udevice *dev)
{
struct lm3533_backlight_priv *priv = dev_get_priv(dev);
int ret;
if (device_get_uclass_id(dev->parent) != UCLASS_I2C)
return -EPROTONOSUPPORT;
dm_gpio_set_value(&priv->enable_gpio, 1);
mdelay(5);
ret = dm_i2c_reg_clrset(dev, LM3533_OVP_FREQUENCY_PWM_POLARITY,
BOOST_FREQ_MASK, priv->boost_freq << BOOST_FREQ_SHIFT);
if (ret) {
log_debug("%s: freq config failed %d\n", __func__, ret);
return ret;
}
ret = dm_i2c_reg_clrset(dev, LM3533_OVP_FREQUENCY_PWM_POLARITY,
BOOST_OVP_MASK, priv->boost_ovp << BOOST_OVP_SHIFT);
if (ret) {
log_debug("%s: ovp config failed %d\n", __func__, ret);
return ret;
}
return 0;
}