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>
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56610d9c11
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@ -13,9 +13,12 @@
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#include <linux/module.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/slab.h>
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#include <linux/of.h>
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#include <linux/of_gpio.h>
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#include <video/omapdss.h>
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#include <video/omapdss.h>
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#include <video/omap-panel-data.h>
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#include <video/omap-panel-data.h>
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#include <video/of_display_timing.h>
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struct panel_drv_data {
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struct panel_drv_data {
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struct omap_dss_device dssdev;
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struct omap_dss_device dssdev;
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@ -72,7 +75,8 @@ static int panel_dpi_enable(struct omap_dss_device *dssdev)
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if (omapdss_device_is_enabled(dssdev))
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if (omapdss_device_is_enabled(dssdev))
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return 0;
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return 0;
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in->ops.dpi->set_data_lines(in, ddata->data_lines);
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if (ddata->data_lines)
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in->ops.dpi->set_data_lines(in, ddata->data_lines);
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in->ops.dpi->set_timings(in, &ddata->videomode);
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in->ops.dpi->set_timings(in, &ddata->videomode);
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r = in->ops.dpi->enable(in);
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r = in->ops.dpi->enable(in);
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@ -195,6 +199,47 @@ err_gpio:
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return r;
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return r;
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}
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}
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static int panel_dpi_probe_of(struct platform_device *pdev)
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{
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struct panel_drv_data *ddata = platform_get_drvdata(pdev);
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struct device_node *node = pdev->dev.of_node;
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struct omap_dss_device *in;
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int r;
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struct display_timing timing;
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struct videomode vm;
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struct gpio_desc *gpio;
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gpio = devm_gpiod_get(&pdev->dev, "enable");
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if (IS_ERR(gpio)) {
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dev_err(&pdev->dev, "failed to parse enable gpio\n");
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return PTR_ERR(gpio);
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} else {
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gpiod_direction_output(gpio, 0);
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ddata->enable_gpio = gpio;
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}
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ddata->backlight_gpio = -ENOENT;
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r = of_get_display_timing(node, "panel-timing", &timing);
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if (r) {
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dev_err(&pdev->dev, "failed to get video timing\n");
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return r;
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}
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videomode_from_timing(&timing, &vm);
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videomode_to_omap_video_timings(&vm, &ddata->videomode);
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in = omapdss_of_find_source_for_first_ep(node);
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if (IS_ERR(in)) {
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dev_err(&pdev->dev, "failed to find video source\n");
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return PTR_ERR(in);
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}
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ddata->in = in;
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return 0;
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}
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static int panel_dpi_probe(struct platform_device *pdev)
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static int panel_dpi_probe(struct platform_device *pdev)
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{
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{
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struct panel_drv_data *ddata;
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struct panel_drv_data *ddata;
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@ -211,6 +256,10 @@ static int panel_dpi_probe(struct platform_device *pdev)
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r = panel_dpi_probe_pdata(pdev);
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r = panel_dpi_probe_pdata(pdev);
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if (r)
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if (r)
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return r;
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return r;
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} else if (pdev->dev.of_node) {
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r = panel_dpi_probe_of(pdev);
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if (r)
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return r;
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} else {
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} else {
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return -ENODEV;
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return -ENODEV;
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}
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}
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@ -260,12 +309,20 @@ static int __exit panel_dpi_remove(struct platform_device *pdev)
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return 0;
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return 0;
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}
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}
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static const struct of_device_id panel_dpi_of_match[] = {
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{ .compatible = "omapdss,panel-dpi", },
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{},
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};
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MODULE_DEVICE_TABLE(of, panel_dpi_of_match);
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static struct platform_driver panel_dpi_driver = {
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static struct platform_driver panel_dpi_driver = {
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.probe = panel_dpi_probe,
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.probe = panel_dpi_probe,
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.remove = __exit_p(panel_dpi_remove),
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.remove = __exit_p(panel_dpi_remove),
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.driver = {
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.driver = {
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.name = "panel-dpi",
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.name = "panel-dpi",
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.owner = THIS_MODULE,
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.owner = THIS_MODULE,
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.of_match_table = panel_dpi_of_match,
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},
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},
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};
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};
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