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drm/panel: maxim-max96752f: Add power supply regulator support

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Signed-off-by: Wyon Bi <bivvy.bi@rock-chips.com>
Change-Id: Idbc26fb9d76b5c6afc1ddd35de715b22157ccbcd
This commit is contained in:
Wyon Bi 2023-05-06 08:43:23 +00:00 committed by Tao Huang
parent 23bc9d31c3
commit 64d9662793
1 changed files with 76 additions and 13 deletions
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89
drivers/gpu/drm/panel/panel-maxim-max96752f.c
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@ -13,6 +13,7 @@
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/of.h>
#include <video/videomode.h>
@ -46,7 +47,7 @@ struct max96752f {
struct regmap *serializer;
struct regmap *deserializer;
} regmap;
struct gpio_desc *enable_gpio;
struct regulator *supply;
struct backlight_device *backlight;
struct drm_display_mode mode;
const struct panel_desc *desc;
@ -182,6 +183,26 @@ static const struct regmap_config max96752f_regmap_config = {
.rd_table = &max96752f_readable_table,
};
static void max96752f_power_off(void *data)
{
struct max96752f *max96752f = data;
if (max96752f->supply)
regulator_disable(max96752f->supply);
}
static void max96752f_power_on(struct max96752f *max96752f)
{
int ret;
if (max96752f->supply) {
ret = regulator_enable(max96752f->supply);
if (ret)
dev_err(max96752f->dev,
"failed to enable power supply: %d\n", ret);
}
}
static int max96752f_probe(struct i2c_client *client)
{
struct device *dev = &client->dev;
@ -197,6 +218,27 @@ static int max96752f_probe(struct i2c_client *client)
max96752f->desc = of_device_get_match_data(dev);
i2c_set_clientdata(client, max96752f);
max96752f->supply = devm_regulator_get_optional(dev, "power");
if (IS_ERR(max96752f->supply)) {
if (PTR_ERR(max96752f->supply) != -ENODEV)
return dev_err_probe(dev, PTR_ERR(max96752f->supply),
"failed to get regulator\n");
max96752f->supply = NULL;
} else {
ret = regulator_enable(max96752f->supply);
if (ret) {
dev_err(dev, "failed to enable power supply: %d\n", ret);
return ret;
}
ret = devm_add_action_or_reset(dev, max96752f_power_off, max96752f);
if (ret) {
regulator_disable(max96752f->supply);
return ret;
}
}
max96752f->regmap.deserializer =
devm_regmap_init_i2c(client, &max96752f_regmap_config);
if (IS_ERR(max96752f->regmap.deserializer))
@ -237,6 +279,26 @@ static int max96752f_remove(struct i2c_client *client)
return 0;
}
static int __maybe_unused max96752f_suspend(struct device *dev)
{
struct max96752f *max96752f = dev_get_drvdata(dev);
max96752f_power_off(max96752f);
return 0;
}
static int __maybe_unused max96752f_resume(struct device *dev)
{
struct max96752f *max96752f = dev_get_drvdata(dev);
max96752f_power_on(max96752f);
return 0;
}
static SIMPLE_DEV_PM_OPS(max96752f_pm_ops, max96752f_suspend, max96752f_resume);
#define maxim_serializer_write(max96752f, reg, val) do { \
int ret; \
ret = regmap_write(max96752f->regmap.serializer, \
@ -269,7 +331,7 @@ static int max96752f_remove(struct i2c_client *client)
return ret; \
} while (0)
static int boe_av156fht_l83_panel_prepare(struct max96752f *max96752f)
static int boe_av156fht_l83_prepare(struct max96752f *max96752f)
{
maxim_deserializer_write(max96752f, 0x0002, 0x43);
maxim_deserializer_write(max96752f, 0x0140, 0x20);
@ -286,14 +348,14 @@ static int boe_av156fht_l83_panel_prepare(struct max96752f *max96752f)
return 0;
}
static int boe_av156fht_l83_panel_unprepare(struct max96752f *max96752f)
static int boe_av156fht_l83_unprepare(struct max96752f *max96752f)
{
maxim_deserializer_write(max96752f, 0x0215, 0x80); /* lcd_en */
return 0;
}
static int boe_av156fht_l83_panel_enable(struct max96752f *max96752f)
static int boe_av156fht_l83_enable(struct max96752f *max96752f)
{
maxim_deserializer_write(max96752f, 0x0227, 0x90); /* lcd_rst */
msleep(20);
@ -305,7 +367,7 @@ static int boe_av156fht_l83_panel_enable(struct max96752f *max96752f)
return 0;
}
static int boe_av156fht_l83_panel_disable(struct max96752f *max96752f)
static int boe_av156fht_l83_disable(struct max96752f *max96752f)
{
maxim_deserializer_write(max96752f, 0x0221, 0x80); /* lcd_stb */
maxim_deserializer_write(max96752f, 0x020f, 0x80); /* tp_rst */
@ -314,7 +376,7 @@ static int boe_av156fht_l83_panel_disable(struct max96752f *max96752f)
return 0;
}
static int boe_av156fht_l83_panel_backlight_enable(struct max96752f *max96752f)
static int boe_av156fht_l83_backlight_enable(struct max96752f *max96752f)
{
maxim_deserializer_write(max96752f, 0x0212, 0x90); /* bl_current_ctl */
maxim_deserializer_write(max96752f, 0x0209, 0x90); /* bl_en */
@ -322,7 +384,7 @@ static int boe_av156fht_l83_panel_backlight_enable(struct max96752f *max96752f)
return 0;
}
static int boe_av156fht_l83_panel_backlight_disable(struct max96752f *max96752f)
static int boe_av156fht_l83_backlight_disable(struct max96752f *max96752f)
{
maxim_deserializer_write(max96752f, 0x0209, 0x80); /* bl_en */
maxim_deserializer_write(max96752f, 0x0212, 0x80); /* bl_current_ctl */
@ -334,12 +396,12 @@ static const struct panel_desc boe_av156fht_l83 = {
.name = "boe-av156fht-l83",
.width_mm = 346,
.height_mm = 194,
.prepare = boe_av156fht_l83_panel_prepare,
.unprepare = boe_av156fht_l83_panel_unprepare,
.enable = boe_av156fht_l83_panel_enable,
.disable = boe_av156fht_l83_panel_disable,
.backlight_enable = boe_av156fht_l83_panel_backlight_enable,
.backlight_disable = boe_av156fht_l83_panel_backlight_disable,
.prepare = boe_av156fht_l83_prepare,
.unprepare = boe_av156fht_l83_unprepare,
.enable = boe_av156fht_l83_enable,
.disable = boe_av156fht_l83_disable,
.backlight_enable = boe_av156fht_l83_backlight_enable,
.backlight_disable = boe_av156fht_l83_backlight_disable,
};
static const struct of_device_id max96752f_of_match[] = {
@ -352,6 +414,7 @@ static struct i2c_driver max96752f_driver = {
.driver = {
.name = "panel-maxim-max96752f",
.of_match_table = max96752f_of_match,
.pm = &max96752f_pm_ops,
},
.probe_new = max96752f_probe,
.remove = max96752f_remove,