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Commit 4fcd6893 authored by Narender Ankam's avatar Narender Ankam Committed by Gerrit - the friendly Code Review server
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msm: mdss: dsi: parse and control vdd_ext gpio 



Parse and control vdd_ext gpio during power_on/off
sequence required for 10" novatek panel on apq8053 FEPv2.

Change-Id: Iab7f99b6f83f6ef69d84e584e8438b23de01a641
Signed-off-by: default avatarNarender Ankam <nankam@codeaurora.org>
parent 6618051a

Documentation/devicetree/bindings/fb/mdss-dsi.txt

+1 −0
Original line number Diff line number Diff line
@@ -113,6 +113,7 @@ Optional properties: 
- qcom,platform-bklight-en-gpio-invert:	Invert the gpio used to enable display back-light

- 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.

- qcom,ext-vdd-gpio:			Specifies the GPIO to enable external VDD supply.

- pinctrl-names:			List of names to assign mdss pin states defined in pinctrl device node

					Refer to pinctrl-bindings.txt

- pinctrl-<0..n>:			Lists phandles each pointing to the pin configuration node within a pin

drivers/video/fbdev/msm/mdss_dsi.c

+22 −0
Original line number Diff line number Diff line
@@ -383,6 +383,14 @@ static int mdss_dsi_panel_power_off(struct mdss_panel_data *pdata) 
		ret = 0;

	}



	if (gpio_is_valid(ctrl_pdata->vdd_ext_gpio)) {

		ret = gpio_direction_output(

			ctrl_pdata->vdd_ext_gpio, 0);

		if (ret)

			pr_err("%s: unable to set dir for vdd gpio\n",

					__func__);

	}



	if (mdss_dsi_pinctrl_set_state(ctrl_pdata, false))

		pr_debug("reset disable: pinctrl not enabled\n");
@@ -410,6 +418,15 @@ static int mdss_dsi_panel_power_on(struct mdss_panel_data *pdata) 
	ctrl_pdata = container_of(pdata, struct mdss_dsi_ctrl_pdata,

				panel_data);



	if (gpio_is_valid(ctrl_pdata->vdd_ext_gpio)) {

		ret = gpio_direction_output(

				ctrl_pdata->vdd_ext_gpio, 1);

		usleep_range(3000, 4000); /* h/w recommended delay */

		if (ret)

			pr_err("%s: unable to set dir for vdd gpio\n",

					__func__);

	}



	ret = msm_mdss_enable_vreg(

		ctrl_pdata->panel_power_data.vreg_config,

		ctrl_pdata->panel_power_data.num_vreg, 1);
@@ -4183,6 +4200,11 @@ 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->vdd_ext_gpio = of_get_named_gpio(ctrl_pdev->dev.of_node,

		"qcom,ext-vdd-gpio", 0);

	if (!gpio_is_valid(ctrl_pdata->vdd_ext_gpio))

		pr_info("%s: ext vdd gpio not specified\n", __func__);



	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))

drivers/video/fbdev/msm/mdss_dsi.h

+1 −0
Original line number Diff line number Diff line
@@ -435,6 +435,7 @@ struct mdss_dsi_ctrl_pdata { 
	int rst_gpio;

	int disp_en_gpio;

	int bklt_en_gpio;

	int vdd_ext_gpio;

	int mode_gpio;

	int intf_mux_gpio;

	bool bklt_en_gpio_invert;

drivers/video/fbdev/msm/mdss_dsi_panel.c

+12 −0
Original line number Diff line number Diff line
@@ -326,6 +326,15 @@ static int mdss_dsi_request_gpios(struct mdss_dsi_ctrl_pdata *ctrl_pdata) 
			goto bklt_en_gpio_err;

		}

	}

	if (gpio_is_valid(ctrl_pdata->vdd_ext_gpio)) {

		rc = gpio_request(ctrl_pdata->vdd_ext_gpio,

						"vdd_enable");

		if (rc) {

			pr_err("request vdd enable gpio failed, rc=%d\n",

				rc);

			goto vdd_en_gpio_err;

		}

	}

	if (gpio_is_valid(ctrl_pdata->mode_gpio)) {

		rc = gpio_request(ctrl_pdata->mode_gpio, "panel_mode");

		if (rc) {
@@ -337,6 +346,9 @@ static int mdss_dsi_request_gpios(struct mdss_dsi_ctrl_pdata *ctrl_pdata) 
	return rc;



mode_gpio_err:

	if (gpio_is_valid(ctrl_pdata->vdd_ext_gpio))

		gpio_free(ctrl_pdata->vdd_ext_gpio);

vdd_en_gpio_err:

	if (gpio_is_valid(ctrl_pdata->bklt_en_gpio))

		gpio_free(ctrl_pdata->bklt_en_gpio);

bklt_en_gpio_err: