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msm: mdss: control avdd enable gpio when doing panel reset

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Avdd enable gpio maybe used for AMOLED panel to control avdd
output. This gpio should be enabled/disabled when panel
does unblank/blank once to avoid panel electric leakage.

Change-Id: I18f0f6491f0ff97df5556e74a686a18b262708df
Signed-off-by: Yahui Wang <yahuiw@codeaurora.org>
This commit is contained in:
Yahui Wang 2017-05-23 09:21:41 +08:00
parent c5685ec0f3
commit 41f27c5716
4 changed files with 49 additions and 1 deletions
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4
Documentation/devicetree/bindings/fb/mdss-dsi.txt
View file

@ -105,7 +105,9 @@ Optional properties:
- qcom,platform-reset-gpio: Specifies the panel reset gpio.
- qcom,platform-te-gpio: Specifies the gpio used for TE.
- qcom,platform-bklight-en-gpio: Specifies the gpio used to enable display back-light
- qcom,platform-bklight-en-gpio-invert: Invert the gpio used to enable display back-light
- qcom,platform-bklight-en-gpio-invert: Boolean to invert the gpio used to enable display back-light
- qcom,platform-avdd-en-gpio: Specifies the gpio used to enable AMOLED AVDD
- qcom,platform-avdd-en-gpio-invert: Boolean to invert the gpio used to enable AMOLED AVDD
- qcom,panel-mode-gpio: Specifies the GPIO to select video/command/single-port/dual-port
mode of panel through gpio when it supports these modes.
- pinctrl-names: List of names to assign mdss pin states defined in pinctrl device node

9
drivers/video/fbdev/msm/mdss_dsi.c
View file

@ -4267,6 +4267,15 @@ static int mdss_dsi_parse_gpio_params(struct platform_device *ctrl_pdev,
of_property_read_bool(ctrl_pdev->dev.of_node,
"qcom,platform-bklight-en-gpio-invert");
ctrl_pdata->avdd_en_gpio = of_get_named_gpio(ctrl_pdev->dev.of_node,
"qcom,platform-avdd-en-gpio", 0);
if (!gpio_is_valid(ctrl_pdata->avdd_en_gpio))
pr_info("%s: avdd_en gpio not specified\n", __func__);
ctrl_pdata->avdd_en_gpio_invert =
of_property_read_bool(ctrl_pdev->dev.of_node,
"qcom,platform-avdd-en-gpio-invert");
ctrl_pdata->rst_gpio = of_get_named_gpio(ctrl_pdev->dev.of_node,
"qcom,platform-reset-gpio", 0);
if (!gpio_is_valid(ctrl_pdata->rst_gpio))

2
drivers/video/fbdev/msm/mdss_dsi.h
View file

@ -455,6 +455,8 @@ struct mdss_dsi_ctrl_pdata {
int bklt_en_gpio;
bool bklt_en_gpio_invert;
bool bklt_en_gpio_state;
int avdd_en_gpio;
bool avdd_en_gpio_invert;
int lcd_mode_sel_gpio;
int bklt_ctrl; /* backlight ctrl */
bool pwm_pmi;

35
drivers/video/fbdev/msm/mdss_dsi_panel.c
View file

@ -260,6 +260,15 @@ static int mdss_dsi_request_gpios(struct mdss_dsi_ctrl_pdata *ctrl_pdata)
rc);
goto rst_gpio_err;
}
if (gpio_is_valid(ctrl_pdata->avdd_en_gpio)) {
rc = gpio_request(ctrl_pdata->avdd_en_gpio,
"avdd_enable");
if (rc) {
pr_err("request avdd_en gpio failed, rc=%d\n",
rc);
goto avdd_en_gpio_err;
}
}
if (gpio_is_valid(ctrl_pdata->lcd_mode_sel_gpio)) {
rc = gpio_request(ctrl_pdata->lcd_mode_sel_gpio, "mode_sel");
if (rc) {
@ -272,6 +281,9 @@ static int mdss_dsi_request_gpios(struct mdss_dsi_ctrl_pdata *ctrl_pdata)
return rc;
lcd_mode_sel_gpio_err:
if (gpio_is_valid(ctrl_pdata->avdd_en_gpio))
gpio_free(ctrl_pdata->avdd_en_gpio);
avdd_en_gpio_err:
gpio_free(ctrl_pdata->rst_gpio);
rst_gpio_err:
if (gpio_is_valid(ctrl_pdata->disp_en_gpio))
@ -424,6 +436,21 @@ int mdss_dsi_panel_reset(struct mdss_panel_data *pdata, int enable)
if (pdata->panel_info.rst_seq[++i])
usleep_range(pinfo->rst_seq[i] * 1000, pinfo->rst_seq[i] * 1000);
}
if (gpio_is_valid(ctrl_pdata->avdd_en_gpio)) {
if (ctrl_pdata->avdd_en_gpio_invert) {
rc = gpio_direction_output(
ctrl_pdata->avdd_en_gpio, 0);
} else {
rc = gpio_direction_output(
ctrl_pdata->avdd_en_gpio, 1);
}
if (rc) {
pr_err("%s: unable to set dir for avdd_en gpio\n",
__func__);
goto exit;
}
}
}
if (gpio_is_valid(ctrl_pdata->lcd_mode_sel_gpio)) {
@ -452,6 +479,14 @@ int mdss_dsi_panel_reset(struct mdss_panel_data *pdata, int enable)
pr_debug("%s: Reset panel done\n", __func__);
}
} else {
if (gpio_is_valid(ctrl_pdata->avdd_en_gpio)) {
if (ctrl_pdata->avdd_en_gpio_invert)
gpio_set_value((ctrl_pdata->avdd_en_gpio), 1);
else
gpio_set_value((ctrl_pdata->avdd_en_gpio), 0);
gpio_free(ctrl_pdata->avdd_en_gpio);
}
if (gpio_is_valid(ctrl_pdata->disp_en_gpio)) {
gpio_set_value((ctrl_pdata->disp_en_gpio), 0);
gpio_free(ctrl_pdata->disp_en_gpio);