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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: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Archit Taneja <archit@ti.com>
hifive-unleashed-5.1
Tomi Valkeinen 2013-05-16 15:14:16 +03:00
parent 56610d9c11
commit 4843a0582b
1 changed files with 58 additions and 1 deletions
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59
drivers/video/fbdev/omap2/displays-new/panel-dpi.c
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@ -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;
@ -72,7 +75,8 @@ static int panel_dpi_enable(struct omap_dss_device *dssdev)
if (omapdss_device_is_enabled(dssdev))
return 0;
in->ops.dpi->set_data_lines(in, ddata->data_lines);
if (ddata->data_lines)
in->ops.dpi->set_data_lines(in, ddata->data_lines);
in->ops.dpi->set_timings(in, &ddata->videomode);
r = in->ops.dpi->enable(in);
@ -195,6 +199,47 @@ err_gpio:
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,
},
};