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backlight: add aw99703 led boost configuration

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support lm3697 led boost configuration
1.  boost ovp
2.  boost ocp
3.  default brightness

Change-Id: Ia6254adad216153fdcd1d7f1d40b9eb68d828acd
Signed-off-by: tanhua1 <tanhua1@lenovo.com>
Reviewed-on: https://gerrit.mot.com/2045770
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Xiangpo Zhao <zhaoxp3@motorola.com>
Submit-Approved: Jira Key
This commit is contained in:
tanhua1 2021-08-19 13:20:26 +08:00 • committed by Hua Tan
commit 50da0f843a
2 changed files with 34 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

34
drivers/backlight/aw99703/leds_aw99703.c
View file

@ -277,7 +277,7 @@ static int aw99703_backlight_init(struct aw99703_data *drvdata)
aw99703_i2c_write_bit(drvdata->client,
AW99703_REG_BSTCTR1,
AW99703_BSTCTR1_OVPSEL_MASK,
AW99703_BSTCTR1_OVPSEL_38V);
drvdata->ovp_level);
/*switch frequency 1000kHz*/
aw99703_i2c_write_bit(drvdata->client,
@ -289,7 +289,7 @@ static int aw99703_backlight_init(struct aw99703_data *drvdata)
aw99703_i2c_write_bit(drvdata->client,
AW99703_REG_BSTCTR1,
AW99703_BSTCTR1_OCPSEL_MASK,
AW99703_BSTCTR1_OCPSEL_3P3A);
drvdata->ocp_level);
/*BSTCRT2 IDCTSEL*/
if (drvdata->bl_reconfig_enable && (AW99703_REG_BSTCTR2 == drvdata->bl_slow_reg)) {
@ -511,13 +511,19 @@ aw99703_get_dt_data(struct device *dev, struct aw99703_data *drvdata)
pr_info("%s using_lsb --<%d>\n", __func__, drvdata->using_lsb);
if (drvdata->using_lsb) {
drvdata->default_brightness = 0x7ff;
drvdata->max_brightness = 2047;
} else {
drvdata->default_brightness = 0xff;
drvdata->max_brightness = 255;
}
rc = of_property_read_u32(np, "aw99703,default-brightness", &drvdata->default_brightness);
if (rc != 0) {
drvdata->default_brightness = drvdata->max_brightness;
pr_err("%s default-brightness not found, set to max %d\n", __func__, drvdata->default_brightness);
}
else
pr_info("%s default-brightness=%d\n", __func__, drvdata->default_brightness);
rc = of_property_read_u32(np, "aw99703,bl-fscal-led", &temp);
if (rc) {
pr_err("Invalid backlight full-scale led current!\n");
@ -577,6 +583,24 @@ aw99703_get_dt_data(struct device *dev, struct aw99703_data *drvdata)
else
pr_info("%s bl_map=%d\n", __func__, drvdata->bl_map);
rc = of_property_read_u32(np, "aw99703,ovp-level", &temp);
if (rc) {
drvdata->ovp_level = AW99703_BSTCTR1_OVPSEL_38V;
pr_err("ovp-level not found, set default %x!\n", drvdata->ovp_level);
} else {
drvdata->ovp_level = temp<<2;
pr_info("%s ovp_level %x\n", __func__, drvdata->ovp_level);
}
rc = of_property_read_u32(np, "aw99703,ocp-level", &temp);
if (rc) {
drvdata->ocp_level = AW99703_BSTCTR1_OCPSEL_2P7A;
pr_err("ocp-level not found, set default %x!\n", drvdata->ocp_level);
} else {
drvdata->ocp_level = temp;
pr_info("%s ocp_level %x\n", __func__, drvdata->ocp_level);
}
rc = of_property_read_u32(np, "aw99703,bl-slow-reg", &drvdata->bl_slow_reg);
if (!rc) {
const char *reconfg_panel;
@ -721,7 +745,7 @@ static int aw99703_probe(struct i2c_client *client,
aw99703_backlight_init(drvdata);
aw99703_backlight_enable(drvdata);
aw99703_set_brightness(drvdata, MAX_BRIGHTNESS);
aw99703_set_brightness(drvdata, drvdata->default_brightness);
err = sysfs_create_group(&client->dev.kobj, &aw99703_attribute_group);
if (err < 0) {
dev_info(&client->dev, "%s error creating sysfs attr files\n",

9
drivers/backlight/aw99703/leds_aw99703.h
View file

@ -154,10 +154,10 @@ const unsigned char aw99703_reg_access[AW99703_REG_MAX] = {
#define AW99703_BSTCTR1_OVPSEL_38V (3<<2)
#define AW99703_BSTCTR1_OVPSEL_41P5V (4<<2)
#define AW99703_BSTCTR1_OCPSEL_MASK (~(3<<0))
#define AW99703_BSTCTR1_OCPSEL_0P7A (0<<0)
#define AW99703_BSTCTR1_OCPSEL_1P6A (1<<0)
#define AW99703_BSTCTR1_OCPSEL_2P46A (2<<0)
#define AW99703_BSTCTR1_OCPSEL_3P3A (3<<0)
#define AW99703_BSTCTR1_OCPSEL_0P9A (0<<0)
#define AW99703_BSTCTR1_OCPSEL_1P8A (1<<0)
#define AW99703_BSTCTR1_OCPSEL_2P7A (2<<0)
#define AW99703_BSTCTR1_OCPSEL_3P4A (3<<0)
/*BSTCTR2:0x05*/
#define AW99703_BSTCTR2_AFEN_MASK (~(1<<7))
@ -242,6 +242,7 @@ struct aw99703_data {
unsigned int i2c_trans_dim;
unsigned int channel;
unsigned int ovp_level;
unsigned int ocp_level;
unsigned int frequency;
unsigned int default_brightness;
unsigned int max_brightness;