drivers/video/omap2/displays-new/connector-hdmi.c - LeafOS-Devices/android_kernel_realme_mt6785 - Gitiles

 /*
  * HDMI Connector driver
  *
  * Copyright (C) 2013 Texas Instruments
  * Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 as published by
  * the Free Software Foundation.
  */

 #include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/of.h>

 #include <drm/drm_edid.h>

 #include <video/omapdss.h>
 #include <video/omap-panel-data.h>

 static const struct omap_video_timings hdmic_default_timings = {
 	.x_res		= 640,
 	.y_res		= 480,
 	.pixelclock	= 25175000,
 	.hsw		= 96,
 	.hfp		= 16,
 	.hbp		= 48,
 	.vsw		= 2,
 	.vfp		= 11,
 	.vbp		= 31,

 	.vsync_level	= OMAPDSS_SIG_ACTIVE_LOW,
 	.hsync_level	= OMAPDSS_SIG_ACTIVE_LOW,

 	.interlace	= false,
 };

 struct panel_drv_data {
 	struct omap_dss_device dssdev;
 	struct omap_dss_device *in;

 	struct device *dev;

 	struct omap_video_timings timings;
 };

 #define to_panel_data(x) container_of(x, struct panel_drv_data, dssdev)

 static int hdmic_connect(struct omap_dss_device *dssdev)
 {
 	struct panel_drv_data *ddata = to_panel_data(dssdev);
 	struct omap_dss_device *in = ddata->in;
 	int r;

 	dev_dbg(ddata->dev, "connect\n");

 	if (omapdss_device_is_connected(dssdev))
 		return 0;

 	r = in->ops.hdmi->connect(in, dssdev);
 	if (r)
 		return r;

 	return 0;
 }

 static void hdmic_disconnect(struct omap_dss_device *dssdev)
 {
 	struct panel_drv_data *ddata = to_panel_data(dssdev);
 	struct omap_dss_device *in = ddata->in;

 	dev_dbg(ddata->dev, "disconnect\n");

 	if (!omapdss_device_is_connected(dssdev))
 		return;

 	in->ops.hdmi->disconnect(in, dssdev);
 }

 static int hdmic_enable(struct omap_dss_device *dssdev)
 {
 	struct panel_drv_data *ddata = to_panel_data(dssdev);
 	struct omap_dss_device *in = ddata->in;
 	int r;

 	dev_dbg(ddata->dev, "enable\n");

 	if (!omapdss_device_is_connected(dssdev))
 		return -ENODEV;

 	if (omapdss_device_is_enabled(dssdev))
 		return 0;

 	in->ops.hdmi->set_timings(in, &ddata->timings);

 	r = in->ops.hdmi->enable(in);
 	if (r)
 		return r;

 	dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;

 	return r;
 }

 static void hdmic_disable(struct omap_dss_device *dssdev)
 {
 	struct panel_drv_data *ddata = to_panel_data(dssdev);
 	struct omap_dss_device *in = ddata->in;

 	dev_dbg(ddata->dev, "disable\n");

 	if (!omapdss_device_is_enabled(dssdev))
 		return;

 	in->ops.hdmi->disable(in);

 	dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
 }

 static void hdmic_set_timings(struct omap_dss_device *dssdev,
 		struct omap_video_timings *timings)
 {
 	struct panel_drv_data *ddata = to_panel_data(dssdev);
 	struct omap_dss_device *in = ddata->in;

 	ddata->timings = *timings;
 	dssdev->panel.timings = *timings;

 	in->ops.hdmi->set_timings(in, timings);
 }

 static void hdmic_get_timings(struct omap_dss_device *dssdev,
 		struct omap_video_timings *timings)
 {
 	struct panel_drv_data *ddata = to_panel_data(dssdev);

 	*timings = ddata->timings;
 }

 static int hdmic_check_timings(struct omap_dss_device *dssdev,
 		struct omap_video_timings *timings)
 {
 	struct panel_drv_data *ddata = to_panel_data(dssdev);
 	struct omap_dss_device *in = ddata->in;

 	return in->ops.hdmi->check_timings(in, timings);
 }

 static int hdmic_read_edid(struct omap_dss_device *dssdev,
 		u8 *edid, int len)
 {
 	struct panel_drv_data *ddata = to_panel_data(dssdev);
 	struct omap_dss_device *in = ddata->in;

 	return in->ops.hdmi->read_edid(in, edid, len);
 }

 static bool hdmic_detect(struct omap_dss_device *dssdev)
 {
 	struct panel_drv_data *ddata = to_panel_data(dssdev);
 	struct omap_dss_device *in = ddata->in;

 	return in->ops.hdmi->detect(in);
 }

 static int hdmic_audio_enable(struct omap_dss_device *dssdev)
 {
 	struct panel_drv_data *ddata = to_panel_data(dssdev);
 	struct omap_dss_device *in = ddata->in;
 	int r;

 	/* enable audio only if the display is active */
 	if (!omapdss_device_is_enabled(dssdev))
 		return -EPERM;

 	r = in->ops.hdmi->audio_enable(in);
 	if (r)
 		return r;

 	dssdev->audio_state = OMAP_DSS_AUDIO_ENABLED;

 	return 0;
 }

 static void hdmic_audio_disable(struct omap_dss_device *dssdev)
 {
 	struct panel_drv_data *ddata = to_panel_data(dssdev);
 	struct omap_dss_device *in = ddata->in;

 	in->ops.hdmi->audio_disable(in);

 	dssdev->audio_state = OMAP_DSS_AUDIO_DISABLED;
 }

 static int hdmic_audio_start(struct omap_dss_device *dssdev)
 {
 	struct panel_drv_data *ddata = to_panel_data(dssdev);
 	struct omap_dss_device *in = ddata->in;
 	int r;

 	/*
 	 * No need to check the panel state. It was checked when trasitioning
 	 * to AUDIO_ENABLED.
 	 */
 	if (dssdev->audio_state != OMAP_DSS_AUDIO_ENABLED)
 		return -EPERM;

 	r = in->ops.hdmi->audio_start(in);
 	if (r)
 		return r;

 	dssdev->audio_state = OMAP_DSS_AUDIO_PLAYING;

 	return 0;
 }

 static void hdmic_audio_stop(struct omap_dss_device *dssdev)
 {
 	struct panel_drv_data *ddata = to_panel_data(dssdev);
 	struct omap_dss_device *in = ddata->in;

 	in->ops.hdmi->audio_stop(in);

 	dssdev->audio_state = OMAP_DSS_AUDIO_ENABLED;
 }

 static bool hdmic_audio_supported(struct omap_dss_device *dssdev)
 {
 	struct panel_drv_data *ddata = to_panel_data(dssdev);
 	struct omap_dss_device *in = ddata->in;

 	if (!omapdss_device_is_enabled(dssdev))
 		return false;

 	return in->ops.hdmi->audio_supported(in);
 }

 static int hdmic_audio_config(struct omap_dss_device *dssdev,
 		struct omap_dss_audio *audio)
 {
 	struct panel_drv_data *ddata = to_panel_data(dssdev);
 	struct omap_dss_device *in = ddata->in;
 	int r;

 	/* config audio only if the display is active */
 	if (!omapdss_device_is_enabled(dssdev))
 		return -EPERM;

 	r = in->ops.hdmi->audio_config(in, audio);
 	if (r)
 		return r;

 	dssdev->audio_state = OMAP_DSS_AUDIO_CONFIGURED;

 	return 0;
 }

 static struct omap_dss_driver hdmic_driver = {
 	.connect		= hdmic_connect,
 	.disconnect		= hdmic_disconnect,

 	.enable			= hdmic_enable,
 	.disable		= hdmic_disable,

 	.set_timings		= hdmic_set_timings,
 	.get_timings		= hdmic_get_timings,
 	.check_timings		= hdmic_check_timings,

 	.get_resolution		= omapdss_default_get_resolution,

 	.read_edid		= hdmic_read_edid,
 	.detect			= hdmic_detect,

 	.audio_enable		= hdmic_audio_enable,
 	.audio_disable		= hdmic_audio_disable,
 	.audio_start		= hdmic_audio_start,
 	.audio_stop		= hdmic_audio_stop,
 	.audio_supported	= hdmic_audio_supported,
 	.audio_config		= hdmic_audio_config,
 };

 static int hdmic_probe_pdata(struct platform_device *pdev)
 {
 	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
 	struct connector_hdmi_platform_data *pdata;
 	struct omap_dss_device *in, *dssdev;

 	pdata = dev_get_platdata(&pdev->dev);

 	in = omap_dss_find_output(pdata->source);
 	if (in == NULL) {
 		dev_err(&pdev->dev, "Failed to find video source\n");
 		return -EPROBE_DEFER;
 	}

 	ddata->in = in;

 	dssdev = &ddata->dssdev;
 	dssdev->name = pdata->name;

 	return 0;
 }

 static int hdmic_probe_of(struct platform_device *pdev)
 {
 	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
 	struct device_node *node = pdev->dev.of_node;
 	struct omap_dss_device *in;

 	in = omapdss_of_find_source_for_first_ep(node);
 	if (IS_ERR(in)) {
 		dev_err(&pdev->dev, "failed to find video source\n");
 		return PTR_ERR(in);
 	}

 	ddata->in = in;

 	return 0;
 }

 static int hdmic_probe(struct platform_device *pdev)
 {
 	struct panel_drv_data *ddata;
 	struct omap_dss_device *dssdev;
 	int r;

 	ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL);
 	if (!ddata)
 		return -ENOMEM;

 	platform_set_drvdata(pdev, ddata);
 	ddata->dev = &pdev->dev;

 	if (dev_get_platdata(&pdev->dev)) {
 		r = hdmic_probe_pdata(pdev);
 		if (r)
 			return r;
 	} else if (pdev->dev.of_node) {
 		r = hdmic_probe_of(pdev);
 		if (r)
 			return r;
 	} else {
 		return -ENODEV;
 	}

 	ddata->timings = hdmic_default_timings;

 	dssdev = &ddata->dssdev;
 	dssdev->driver = &hdmic_driver;
 	dssdev->dev = &pdev->dev;
 	dssdev->type = OMAP_DISPLAY_TYPE_HDMI;
 	dssdev->owner = THIS_MODULE;
 	dssdev->panel.timings = hdmic_default_timings;

 	r = omapdss_register_display(dssdev);
 	if (r) {
 		dev_err(&pdev->dev, "Failed to register panel\n");
 		goto err_reg;
 	}

 	return 0;
 err_reg:
 	omap_dss_put_device(ddata->in);
 	return r;
 }

 static int __exit hdmic_remove(struct platform_device *pdev)
 {
 	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
 	struct omap_dss_device *dssdev = &ddata->dssdev;
 	struct omap_dss_device *in = ddata->in;

 	omapdss_unregister_display(&ddata->dssdev);

 	hdmic_disable(dssdev);
 	hdmic_disconnect(dssdev);

 	omap_dss_put_device(in);

 	return 0;
 }

 static const struct of_device_id hdmic_of_match[] = {
 	{ .compatible = "omapdss,hdmi-connector", },
 	{},
 };

 MODULE_DEVICE_TABLE(of, hdmic_of_match);

 static struct platform_driver hdmi_connector_driver = {
 	.probe	= hdmic_probe,
 	.remove	= __exit_p(hdmic_remove),
 	.driver	= {
 		.name	= "connector-hdmi",
 		.owner	= THIS_MODULE,
 		.of_match_table = hdmic_of_match,
 	},
 };

 module_platform_driver(hdmi_connector_driver);

 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>");
 MODULE_DESCRIPTION("HDMI Connector driver");
 MODULE_LICENSE("GPL");
	/*
	* HDMI Connector driver
	*
	* Copyright (C) 2013 Texas Instruments
	* Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
	*
	* This program is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 as published by
	* the Free Software Foundation.
	*/

	#include <linux/slab.h>
	#include <linux/module.h>
	#include <linux/platform_device.h>
	#include <linux/of.h>

	#include <drm/drm_edid.h>

	#include <video/omapdss.h>
	#include <video/omap-panel-data.h>

	static const struct omap_video_timings hdmic_default_timings = {
	.x_res = 640,
	.y_res = 480,
	.pixelclock = 25175000,
	.hsw = 96,
	.hfp = 16,
	.hbp = 48,
	.vsw = 2,
	.vfp = 11,
	.vbp = 31,

	.vsync_level = OMAPDSS_SIG_ACTIVE_LOW,
	.hsync_level = OMAPDSS_SIG_ACTIVE_LOW,

	.interlace = false,
	};

	struct panel_drv_data {
	struct omap_dss_device dssdev;
	struct omap_dss_device *in;

	struct device *dev;

	struct omap_video_timings timings;
	};

	#define to_panel_data(x) container_of(x, struct panel_drv_data, dssdev)

	static int hdmic_connect(struct omap_dss_device *dssdev)
	{
	struct panel_drv_data *ddata = to_panel_data(dssdev);
	struct omap_dss_device *in = ddata->in;
	int r;

	dev_dbg(ddata->dev, "connect\n");

	if (omapdss_device_is_connected(dssdev))
	return 0;

	r = in->ops.hdmi->connect(in, dssdev);
	if (r)
	return r;

	return 0;
	}

	static void hdmic_disconnect(struct omap_dss_device *dssdev)
	{
	struct panel_drv_data *ddata = to_panel_data(dssdev);
	struct omap_dss_device *in = ddata->in;

	dev_dbg(ddata->dev, "disconnect\n");

	if (!omapdss_device_is_connected(dssdev))
	return;

	in->ops.hdmi->disconnect(in, dssdev);
	}

	static int hdmic_enable(struct omap_dss_device *dssdev)
	{
	struct panel_drv_data *ddata = to_panel_data(dssdev);
	struct omap_dss_device *in = ddata->in;
	int r;

	dev_dbg(ddata->dev, "enable\n");

	if (!omapdss_device_is_connected(dssdev))
	return -ENODEV;

	if (omapdss_device_is_enabled(dssdev))
	return 0;

	in->ops.hdmi->set_timings(in, &ddata->timings);

	r = in->ops.hdmi->enable(in);
	if (r)
	return r;

	dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;

	return r;
	}

	static void hdmic_disable(struct omap_dss_device *dssdev)
	{
	struct panel_drv_data *ddata = to_panel_data(dssdev);
	struct omap_dss_device *in = ddata->in;

	dev_dbg(ddata->dev, "disable\n");

	if (!omapdss_device_is_enabled(dssdev))
	return;

	in->ops.hdmi->disable(in);

	dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
	}

	static void hdmic_set_timings(struct omap_dss_device *dssdev,
	struct omap_video_timings *timings)
	{
	struct panel_drv_data *ddata = to_panel_data(dssdev);
	struct omap_dss_device *in = ddata->in;

	ddata->timings = *timings;
	dssdev->panel.timings = *timings;

	in->ops.hdmi->set_timings(in, timings);
	}

	static void hdmic_get_timings(struct omap_dss_device *dssdev,
	struct omap_video_timings *timings)
	{
	struct panel_drv_data *ddata = to_panel_data(dssdev);

	*timings = ddata->timings;
	}

	static int hdmic_check_timings(struct omap_dss_device *dssdev,
	struct omap_video_timings *timings)
	{
	struct panel_drv_data *ddata = to_panel_data(dssdev);
	struct omap_dss_device *in = ddata->in;

	return in->ops.hdmi->check_timings(in, timings);
	}

	static int hdmic_read_edid(struct omap_dss_device *dssdev,
	u8 *edid, int len)
	{
	struct panel_drv_data *ddata = to_panel_data(dssdev);
	struct omap_dss_device *in = ddata->in;

	return in->ops.hdmi->read_edid(in, edid, len);
	}

	static bool hdmic_detect(struct omap_dss_device *dssdev)
	{
	struct panel_drv_data *ddata = to_panel_data(dssdev);
	struct omap_dss_device *in = ddata->in;

	return in->ops.hdmi->detect(in);
	}

	static int hdmic_audio_enable(struct omap_dss_device *dssdev)
	{
	struct panel_drv_data *ddata = to_panel_data(dssdev);
	struct omap_dss_device *in = ddata->in;
	int r;

	/* enable audio only if the display is active */
	if (!omapdss_device_is_enabled(dssdev))
	return -EPERM;

	r = in->ops.hdmi->audio_enable(in);
	if (r)
	return r;

	dssdev->audio_state = OMAP_DSS_AUDIO_ENABLED;

	return 0;
	}

	static void hdmic_audio_disable(struct omap_dss_device *dssdev)
	{
	struct panel_drv_data *ddata = to_panel_data(dssdev);
	struct omap_dss_device *in = ddata->in;

	in->ops.hdmi->audio_disable(in);

	dssdev->audio_state = OMAP_DSS_AUDIO_DISABLED;
	}

	static int hdmic_audio_start(struct omap_dss_device *dssdev)
	{
	struct panel_drv_data *ddata = to_panel_data(dssdev);
	struct omap_dss_device *in = ddata->in;
	int r;

	/*
	* No need to check the panel state. It was checked when trasitioning
	* to AUDIO_ENABLED.
	*/
	if (dssdev->audio_state != OMAP_DSS_AUDIO_ENABLED)
	return -EPERM;

	r = in->ops.hdmi->audio_start(in);
	if (r)
	return r;

	dssdev->audio_state = OMAP_DSS_AUDIO_PLAYING;

	return 0;
	}

	static void hdmic_audio_stop(struct omap_dss_device *dssdev)
	{
	struct panel_drv_data *ddata = to_panel_data(dssdev);
	struct omap_dss_device *in = ddata->in;

	in->ops.hdmi->audio_stop(in);

	dssdev->audio_state = OMAP_DSS_AUDIO_ENABLED;
	}

	static bool hdmic_audio_supported(struct omap_dss_device *dssdev)
	{
	struct panel_drv_data *ddata = to_panel_data(dssdev);
	struct omap_dss_device *in = ddata->in;

	if (!omapdss_device_is_enabled(dssdev))
	return false;

	return in->ops.hdmi->audio_supported(in);
	}

	static int hdmic_audio_config(struct omap_dss_device *dssdev,
	struct omap_dss_audio *audio)
	{
	struct panel_drv_data *ddata = to_panel_data(dssdev);
	struct omap_dss_device *in = ddata->in;
	int r;

	/* config audio only if the display is active */
	if (!omapdss_device_is_enabled(dssdev))
	return -EPERM;

	r = in->ops.hdmi->audio_config(in, audio);
	if (r)
	return r;

	dssdev->audio_state = OMAP_DSS_AUDIO_CONFIGURED;

	return 0;
	}

	static struct omap_dss_driver hdmic_driver = {
	.connect = hdmic_connect,
	.disconnect = hdmic_disconnect,

	.enable = hdmic_enable,
	.disable = hdmic_disable,

	.set_timings = hdmic_set_timings,
	.get_timings = hdmic_get_timings,
	.check_timings = hdmic_check_timings,

	.get_resolution = omapdss_default_get_resolution,

	.read_edid = hdmic_read_edid,
	.detect = hdmic_detect,

	.audio_enable = hdmic_audio_enable,
	.audio_disable = hdmic_audio_disable,
	.audio_start = hdmic_audio_start,
	.audio_stop = hdmic_audio_stop,
	.audio_supported = hdmic_audio_supported,
	.audio_config = hdmic_audio_config,
	};

	static int hdmic_probe_pdata(struct platform_device *pdev)
	{
	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
	struct connector_hdmi_platform_data *pdata;
	struct omap_dss_device in, dssdev;

	pdata = dev_get_platdata(&pdev->dev);

	in = omap_dss_find_output(pdata->source);
	if (in == NULL) {
	dev_err(&pdev->dev, "Failed to find video source\n");
	return -EPROBE_DEFER;
	}

	ddata->in = in;

	dssdev = &ddata->dssdev;
	dssdev->name = pdata->name;

	return 0;
	}

	static int hdmic_probe_of(struct platform_device *pdev)
	{
	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
	struct device_node *node = pdev->dev.of_node;
	struct omap_dss_device *in;

	in = omapdss_of_find_source_for_first_ep(node);
	if (IS_ERR(in)) {
	dev_err(&pdev->dev, "failed to find video source\n");
	return PTR_ERR(in);
	}

	ddata->in = in;

	return 0;
	}

	static int hdmic_probe(struct platform_device *pdev)
	{
	struct panel_drv_data *ddata;
	struct omap_dss_device *dssdev;
	int r;

	ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL);
	if (!ddata)
	return -ENOMEM;

	platform_set_drvdata(pdev, ddata);
	ddata->dev = &pdev->dev;

	if (dev_get_platdata(&pdev->dev)) {
	r = hdmic_probe_pdata(pdev);
	if (r)
	return r;
	} else if (pdev->dev.of_node) {
	r = hdmic_probe_of(pdev);
	if (r)
	return r;
	} else {
	return -ENODEV;
	}

	ddata->timings = hdmic_default_timings;

	dssdev = &ddata->dssdev;
	dssdev->driver = &hdmic_driver;
	dssdev->dev = &pdev->dev;
	dssdev->type = OMAP_DISPLAY_TYPE_HDMI;
	dssdev->owner = THIS_MODULE;
	dssdev->panel.timings = hdmic_default_timings;

	r = omapdss_register_display(dssdev);
	if (r) {
	dev_err(&pdev->dev, "Failed to register panel\n");
	goto err_reg;
	}

	return 0;
	err_reg:
	omap_dss_put_device(ddata->in);
	return r;
	}

	static int __exit hdmic_remove(struct platform_device *pdev)
	{
	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
	struct omap_dss_device *dssdev = &ddata->dssdev;
	struct omap_dss_device *in = ddata->in;

	omapdss_unregister_display(&ddata->dssdev);

	hdmic_disable(dssdev);
	hdmic_disconnect(dssdev);

	omap_dss_put_device(in);

	return 0;
	}

	static const struct of_device_id hdmic_of_match[] = {
	{ .compatible = "omapdss,hdmi-connector", },
	{},
	};

	MODULE_DEVICE_TABLE(of, hdmic_of_match);

	static struct platform_driver hdmi_connector_driver = {
	.probe = hdmic_probe,
	.remove = __exit_p(hdmic_remove),
	.driver = {
	.name = "connector-hdmi",
	.owner = THIS_MODULE,
	.of_match_table = hdmic_of_match,
	},
	};

	module_platform_driver(hdmi_connector_driver);

	MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>");
	MODULE_DESCRIPTION("HDMI Connector driver");
	MODULE_LICENSE("GPL");