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Commit 5d993174 authored by Rajesh Bharathwaj's avatar Rajesh Bharathwaj
Browse files

drm:msm:dsi: support additional gpios in display panel 



Adding support for additional gpios for dsi display panel in xr smartviewer
reference device.

Change-Id: I8816b0244037bf48eee9be62cdcc2fd8bcd84cc6
Signed-off-by: default avatarRajesh Bharathwaj <rajeshbharathwaj@codeaurora.org>
parent 9a3b96da

drivers/gpu/drm/msm/dsi-staging/dsi_panel.c

+316 −1
Original line number Original line Diff line number Diff line 
/*

/*

 * Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.

 * Copyright (c) 2016-2020, The Linux Foundation. All rights reserved.

 *

 *

 * This program is free software; you can redistribute it and/or modify

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and

 * it under the terms of the GNU General Public License version 2 and
@@ -252,6 +252,103 @@ static int dsi_panel_vreg_put(struct dsi_panel *panel) 
	return rc;

	return rc;

}

}





static int dsi_panel_exd_gpio_request(struct dsi_panel *panel)

{

	int rc = 0;

	struct dsi_panel_exd_config *e_config = &panel->exd_config;



	if (!e_config->display_1p8_en && !e_config->led_5v_en &&

		!e_config->led_en1 && !e_config->led_en2 &&

		!e_config->oenab && !e_config->selab &&

		!e_config->switch_power)

		return 0;



	if (gpio_is_valid(e_config->display_1p8_en)) {

		rc = gpio_request(e_config->display_1p8_en, "display_1p8_en");

		if (rc) {

			pr_err("request for display_1p8_en failed, rc=%d\n",

				rc);

			goto error;

		}

	}



	if (gpio_is_valid(e_config->led_5v_en)) {

		rc = gpio_request(e_config->led_5v_en, "led_5v_en");

		if (rc) {

			pr_err("request for led_5v_en failed, rc=%d\n",

				rc);

			goto error_release_1p8;

		}

	}



	if (gpio_is_valid(e_config->led_en1)) {

		rc = gpio_request(e_config->led_en1, "led_en1");

		if (rc) {

			pr_err("request for led_en1 failed, rc=%d\n",

				rc);

			goto error_release_5v;

		}

	}



	if (gpio_is_valid(e_config->led_en2)) {

		rc = gpio_request(e_config->led_en2, "led_en2");

		if (rc) {

			pr_err("request for led_en2 failed, rc=%d\n",

				rc);

			goto error_release_led;

		}

	}



	if (gpio_is_valid(e_config->oenab)) {

		rc = gpio_request(e_config->oenab, "oenab");

		if (rc) {

			pr_err("request for oenab failed, rc=%d\n",

				rc);

			goto error_release_led2;

		}

	}



	if (gpio_is_valid(e_config->selab)) {

		rc = gpio_request(e_config->selab, "selab");

		if (rc) {

			pr_err("request for selab failed, rc=%d\n",

				rc);

			goto error_release_oenab;

		}

	}



	if (gpio_is_valid(e_config->switch_power)) {

		rc = gpio_request(e_config->switch_power, "switch_power");

		if (rc) {

			pr_err("request for switch_power failed, rc=%d\n",

				rc);

			goto error_release_selab;

		}

	}

	return rc;



error_release_selab:

	if (gpio_is_valid(e_config->selab))

		gpio_free(e_config->selab);

error_release_oenab:

	if (gpio_is_valid(e_config->oenab))

		gpio_free(e_config->oenab);

error_release_led2:

	if (gpio_is_valid(e_config->led_en2))

		gpio_free(e_config->led_en2);

error_release_led:

	if (gpio_is_valid(e_config->led_en1))

		gpio_free(e_config->led_en1);

error_release_5v:

	if (gpio_is_valid(e_config->led_5v_en))

		gpio_free(e_config->led_5v_en);

error_release_1p8:

	if (gpio_is_valid(e_config->display_1p8_en))

		gpio_free(e_config->display_1p8_en);

error:

	return rc;

}



static int dsi_panel_gpio_request(struct dsi_panel *panel)

static int dsi_panel_gpio_request(struct dsi_panel *panel)

{

{

	int rc = 0;

	int rc = 0;
@@ -303,6 +400,34 @@ static int dsi_panel_gpio_request(struct dsi_panel *panel) 
	return rc;

	return rc;

}

}





static int dsi_panel_exd_gpio_release(struct dsi_panel *panel)

{

	struct dsi_panel_exd_config *e_config = &panel->exd_config;



	if (!e_config->display_1p8_en && !e_config->led_5v_en &&

		!e_config->led_en1 && !e_config->led_en2 &&

		!e_config->oenab && !e_config->selab &&

		!e_config->switch_power)

		return 0;



	if (gpio_is_valid(e_config->display_1p8_en))

		gpio_free(e_config->display_1p8_en);

	if (gpio_is_valid(e_config->led_5v_en))

		gpio_free(e_config->led_5v_en);

	if (gpio_is_valid(e_config->led_en1))

		gpio_free(e_config->led_en1);

	if (gpio_is_valid(e_config->led_en2))

		gpio_free(e_config->led_en2);

	if (gpio_is_valid(e_config->oenab))

		gpio_free(e_config->oenab);

	if (gpio_is_valid(e_config->selab))

		gpio_free(e_config->selab);

	if (gpio_is_valid(e_config->switch_power))

		gpio_free(e_config->switch_power);



	return 0;

}



static int dsi_panel_gpio_release(struct dsi_panel *panel)

static int dsi_panel_gpio_release(struct dsi_panel *panel)

{

{

	int rc = 0;

	int rc = 0;
@@ -426,6 +551,110 @@ static int dsi_panel_set_pinctrl_state(struct dsi_panel *panel, bool enable) 
	return rc;

	return rc;

}

}





static int dsi_panel_exd_enable(struct dsi_panel *panel)

{

	int rc = 0;

	struct dsi_panel_exd_config *e_config = &panel->exd_config;



	if (!e_config->display_1p8_en && !e_config->led_5v_en &&

			!e_config->led_en1 && !e_config->led_en2 &&

			!e_config->oenab && !e_config->selab &&

			!e_config->switch_power)

		return 0;



	if (gpio_is_valid(e_config->display_1p8_en)) {

		rc = gpio_direction_output(e_config->display_1p8_en, 0);

		if (rc) {

			pr_err("unable to set dir for disp_1p8_en rc:%d\n",

				rc);

			goto exit;

		}

		gpio_set_value(e_config->display_1p8_en, 1);

	}



	if (gpio_is_valid(e_config->switch_power)) {

		rc = gpio_direction_output(e_config->switch_power, 0);

		if (rc) {

			pr_err("unable to set dir for switch_power rc:%d\n",

				rc);

			goto exit;

		}

		gpio_set_value(e_config->switch_power, 1);

	}



	if (gpio_is_valid(e_config->led_5v_en)) {

		rc = gpio_direction_output(e_config->led_5v_en, 0);

		if (rc) {

			pr_err("unable to set dir for led_5v_en rc:%d\n", rc);

			goto exit;

		}

		gpio_set_value(e_config->led_5v_en, 1);

	}



	if (gpio_is_valid(e_config->led_en1)) {

		rc = gpio_direction_output(e_config->led_en1, 0);

		if (rc) {

			pr_err("unable to set dir for led_en1 rc:%d\n", rc);

			goto exit;

		}

		gpio_set_value(e_config->led_en1, 1);

	}



	if (gpio_is_valid(e_config->led_en2)) {

		rc = gpio_direction_output(e_config->led_en2, 0);

		if (rc) {

			pr_err("unable to set dir for led_en2 rc:%d\n", rc);

			goto exit;

		}

		gpio_set_value(e_config->led_en2, 1);

	}



	if (gpio_is_valid(e_config->oenab)) {

		rc = gpio_direction_output(e_config->oenab, 0);

		if (rc) {

			pr_err("unable to set dir for oenab rc:%d\n", rc);

			goto exit;

		}

		gpio_set_value(e_config->oenab, 0);

	}



	if (gpio_is_valid(e_config->selab)) {

		rc = gpio_direction_output(e_config->selab, 0);

		if (rc) {

			pr_err("unable to set dir for selab rc:%d\n", rc);

			goto exit;

		}

		gpio_set_value(e_config->selab, 1);

	}

exit:

	return rc;

}



static void dsi_panel_exd_disable(struct dsi_panel *panel)

{

	struct dsi_panel_exd_config *e_config = &panel->exd_config;



	if (!e_config->display_1p8_en && !e_config->led_5v_en &&

		!e_config->led_en1 && !e_config->led_en2 &&

		!e_config->oenab && !e_config->selab &&

		!e_config->switch_power)

		return;



	if (gpio_is_valid(e_config->display_1p8_en))

		gpio_set_value(e_config->display_1p8_en, 0);

	if (gpio_is_valid(e_config->led_5v_en))

		gpio_set_value(e_config->led_5v_en, 0);

	if (gpio_is_valid(e_config->led_en1))

		gpio_set_value(e_config->led_en1, 0);

	if (gpio_is_valid(e_config->led_en2))

		gpio_set_value(e_config->led_en2, 0);

	if (gpio_is_valid(e_config->oenab))

		gpio_set_value(e_config->oenab, 1);

	if (gpio_is_valid(e_config->selab))

		gpio_set_value(e_config->selab, 0);

	if (gpio_is_valid(e_config->switch_power))

		gpio_set_value(e_config->switch_power, 0);

}





static int dsi_panel_power_on(struct dsi_panel *panel)

static int dsi_panel_power_on(struct dsi_panel *panel)

{

{
@@ -449,6 +678,13 @@ static int dsi_panel_power_on(struct dsi_panel *panel) 
		goto error_disable_gpio;

		goto error_disable_gpio;

	}

	}





	rc = dsi_panel_exd_enable(panel);

	if (rc) {

		pr_err("[%s] failed to reset panel, rc=%d\n", panel->name, rc);

		dsi_panel_exd_disable(panel);

		goto error_disable_gpio;

	}



	goto exit;

	goto exit;





error_disable_gpio:

error_disable_gpio:
@@ -471,6 +707,8 @@ static int dsi_panel_power_off(struct dsi_panel *panel) 
{

{

	int rc = 0;

	int rc = 0;





	dsi_panel_exd_disable(panel);



	if (gpio_is_valid(panel->reset_config.disp_en_gpio))

	if (gpio_is_valid(panel->reset_config.disp_en_gpio))

		gpio_set_value(panel->reset_config.disp_en_gpio, 0);

		gpio_set_value(panel->reset_config.disp_en_gpio, 0);
@@ -1887,6 +2125,63 @@ static int dsi_panel_parse_power_cfg(struct device *parent, 
	return rc;

	return rc;

}

}





static int dsi_panel_exd_parse_gpios(struct dsi_panel *panel,

				 struct device_node *of_node)

{

	int rc = 0;

	struct dsi_panel_exd_config *e_config = &panel->exd_config;



	e_config->display_1p8_en = of_get_named_gpio(of_node,

			"qcom,1p8-en-gpio", 0);

	if (!e_config->display_1p8_en) {

		pr_debug("%s qcom,display-1p8-en-gpio not found\n", __func__);

		return -EINVAL;

	}



	e_config->led_5v_en = of_get_named_gpio(of_node,

				"qcom,led-5v-en-gpio", 0);

	if (!e_config->led_5v_en) {

		pr_debug("%s qcom,led-5v-en-gpio not found\n", __func__);

		return -EINVAL;

	}



	e_config->led_en1 = of_get_named_gpio(of_node,

				"qcom,led-driver-en1-gpio", 0);

	if (!e_config->led_en1) {

		pr_debug("%s qcom,led-driver-en1-gpio not found\n", __func__);

		return -EINVAL;

	}



	e_config->led_en2 = of_get_named_gpio(of_node,

				"qcom,led-driver-en2-gpio", 0);

	if (!e_config->led_en2) {

		pr_debug("%s qcom,led-driver-en2-gpio not found\n", __func__);

		return -EINVAL;

	}



	e_config->oenab = of_get_named_gpio(of_node,

				"qcom,oenab-gpio", 0);

	if (!e_config->oenab) {

		pr_debug("%s qcom,oenab-gpio not found\n", __func__);

		return -EINVAL;

	}



	e_config->selab = of_get_named_gpio(of_node,

				"qcom,selab-gpio", 0);

	if (!e_config->selab) {

		pr_debug("%s qcom,selab-gpio not found\n", __func__);

		return -EINVAL;

	}



	e_config->switch_power = of_get_named_gpio(of_node,

				"qcom,switch-power-gpio", 0);

	if (!e_config->switch_power) {

		pr_debug("%s qcom,switch_power not found\n", __func__);

		return -EINVAL;

	}

	return rc;

}



static int dsi_panel_parse_gpios(struct dsi_panel *panel,

static int dsi_panel_parse_gpios(struct dsi_panel *panel,

				 struct device_node *of_node)

				 struct device_node *of_node)

{

{
@@ -1942,6 +2237,12 @@ static int dsi_panel_parse_gpios(struct dsi_panel *panel, 
		panel->reset_config.mode_sel_state = MODE_SEL_DUAL_PORT;

		panel->reset_config.mode_sel_state = MODE_SEL_DUAL_PORT;

	}

	}





	/* Extended display panel gpios parsed */

	rc = dsi_panel_exd_parse_gpios(panel, of_node);

	if (rc && rc != -EINVAL)

		pr_err("[%s] failed to parse gpios, rc=%d\n",

				panel->name, rc);



	/* TODO:  release memory */

	/* TODO:  release memory */

	rc = dsi_panel_parse_reset_sequence(panel, of_node);

	rc = dsi_panel_parse_reset_sequence(panel, of_node);

	if (rc) {

	if (rc) {
@@ -3105,8 +3406,17 @@ int dsi_panel_drv_init(struct dsi_panel *panel, 
		goto error_gpio_release;

		goto error_gpio_release;

	}

	}





	rc = dsi_panel_exd_gpio_request(panel);

	if (rc) {

		pr_err("[%s] failed to request gpios, rc=%d\n", panel->name,

				rc);

		goto error_exd_gpio_release;

	}



	goto exit;

	goto exit;





error_exd_gpio_release:

	(void)dsi_panel_exd_gpio_release(panel);

error_gpio_release:

error_gpio_release:

	(void)dsi_panel_gpio_release(panel);

	(void)dsi_panel_gpio_release(panel);

error_pinctrl_deinit:

error_pinctrl_deinit:
@@ -3142,6 +3452,11 @@ int dsi_panel_drv_deinit(struct dsi_panel *panel) 
		pr_err("[%s] failed to release gpios, rc=%d\n", panel->name,

		pr_err("[%s] failed to release gpios, rc=%d\n", panel->name,

		       rc);

		       rc);





	rc = dsi_panel_exd_gpio_release(panel);

	if (rc)

		pr_err("[%s] failed to release gpios, rc=%d\n", panel->name,

			rc);



	rc = dsi_panel_pinctrl_deinit(panel);

	rc = dsi_panel_pinctrl_deinit(panel);

	if (rc)

	if (rc)

		pr_err("[%s] failed to deinit gpios, rc=%d\n", panel->name,

		pr_err("[%s] failed to deinit gpios, rc=%d\n", panel->name,

drivers/gpu/drm/msm/dsi-staging/dsi_panel.h

+14 −1
Original line number Original line Diff line number Diff line 
/*

/*

 * Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.

 * Copyright (c) 2016-2020, The Linux Foundation. All rights reserved.

 *

 *

 * This program is free software; you can redistribute it and/or modify

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and

 * it under the terms of the GNU General Public License version 2 and
@@ -161,6 +161,17 @@ enum dsi_panel_type { 
	DSI_PANEL_TYPE_MAX,

	DSI_PANEL_TYPE_MAX,

};

};





/* Extended Panel config for panels with additional gpios */

struct dsi_panel_exd_config {

	int display_1p8_en;

	int led_5v_en;

	int switch_power;

	int led_en1;

	int led_en2;

	int oenab;

	int selab;

};



struct dsi_panel {

struct dsi_panel {

	const char *name;

	const char *name;

	enum dsi_panel_type type;

	enum dsi_panel_type type;
@@ -204,6 +215,8 @@ struct dsi_panel { 
	enum dsi_dms_mode dms_mode;

	enum dsi_dms_mode dms_mode;





	bool sync_broadcast_en;

	bool sync_broadcast_en;



	struct dsi_panel_exd_config exd_config;

};

};





static inline bool dsi_panel_ulps_feature_enabled(struct dsi_panel *panel)

static inline bool dsi_panel_ulps_feature_enabled(struct dsi_panel *panel)