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Commit 4843a058 authored by Tomi Valkeinen's avatar Tomi Valkeinen
Browse files

OMAPDSS: panel-dpi: Add DT support 



Add DT support for panel-dpi.

We disable the use of the backlight_gpio as it should be handled via
backlight framework with DT boots.

Signed-off-by: default avatarTomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: default avatarArchit Taneja <archit@ti.com>
parent 56610d9c

drivers/video/fbdev/omap2/displays-new/panel-dpi.c

+58 −1
Original line number Diff line number Diff line
@@ -13,9 +13,12 @@ 
#include <linux/module.h>

#include <linux/platform_device.h>

#include <linux/slab.h>

#include <linux/of.h>

#include <linux/of_gpio.h>



#include <video/omapdss.h>

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

#include <video/of_display_timing.h>



struct panel_drv_data {

	struct omap_dss_device dssdev;
@@ -72,6 +75,7 @@ static int panel_dpi_enable(struct omap_dss_device *dssdev) 
	if (omapdss_device_is_enabled(dssdev))

		return 0;



	if (ddata->data_lines)

		in->ops.dpi->set_data_lines(in, ddata->data_lines);

	in->ops.dpi->set_timings(in, &ddata->videomode);
@@ -195,6 +199,47 @@ static int panel_dpi_probe_pdata(struct platform_device *pdev) 
	return r;

}



static int panel_dpi_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;

	int r;

	struct display_timing timing;

	struct videomode vm;

	struct gpio_desc *gpio;



	gpio = devm_gpiod_get(&pdev->dev, "enable");

	if (IS_ERR(gpio)) {

		dev_err(&pdev->dev, "failed to parse enable gpio\n");

		return PTR_ERR(gpio);

	} else {

		gpiod_direction_output(gpio, 0);

		ddata->enable_gpio = gpio;

	}



	ddata->backlight_gpio = -ENOENT;



	r = of_get_display_timing(node, "panel-timing", &timing);

	if (r) {

		dev_err(&pdev->dev, "failed to get video timing\n");

		return r;

	}



	videomode_from_timing(&timing, &vm);

	videomode_to_omap_video_timings(&vm, &ddata->videomode);



	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 panel_dpi_probe(struct platform_device *pdev)

{

	struct panel_drv_data *ddata;
@@ -211,6 +256,10 @@ static int panel_dpi_probe(struct platform_device *pdev) 
		r = panel_dpi_probe_pdata(pdev);

		if (r)

			return r;

	} else if (pdev->dev.of_node) {

		r = panel_dpi_probe_of(pdev);

		if (r)

			return r;

	} else {

		return -ENODEV;

	}
@@ -260,12 +309,20 @@ static int __exit panel_dpi_remove(struct platform_device *pdev) 
	return 0;

}



static const struct of_device_id panel_dpi_of_match[] = {

	{ .compatible = "omapdss,panel-dpi", },

	{},

};



MODULE_DEVICE_TABLE(of, panel_dpi_of_match);



static struct platform_driver panel_dpi_driver = {

	.probe = panel_dpi_probe,

	.remove = __exit_p(panel_dpi_remove),

	.driver = {

		.name = "panel-dpi",

		.owner = THIS_MODULE,

		.of_match_table = panel_dpi_of_match,

	},

};