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author | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2013-05-16 15:14:16 +0300 |
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committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2014-05-07 11:00:04 +0300 |
commit | 4843a0582bb1cef4536b2e44f4c9aca667e0bbf2 (patch) | |
tree | 33eb3cb5d24d2ec97b94299d7cc7fd61ee54a08d /drivers/video/fbdev/omap2/displays-new | |
parent | 56610d9c11b4798d72e2cca4189392c21dc77265 (diff) | |
download | op-kernel-dev-4843a0582bb1cef4536b2e44f4c9aca667e0bbf2.zip op-kernel-dev-4843a0582bb1cef4536b2e44f4c9aca667e0bbf2.tar.gz |
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>
Diffstat (limited to 'drivers/video/fbdev/omap2/displays-new')
-rw-r--r-- | drivers/video/fbdev/omap2/displays-new/panel-dpi.c | 59 |
1 files changed, 58 insertions, 1 deletions
diff --git a/drivers/video/fbdev/omap2/displays-new/panel-dpi.c b/drivers/video/fbdev/omap2/displays-new/panel-dpi.c index d379dec..dca6b10 100644 --- a/drivers/video/fbdev/omap2/displays-new/panel-dpi.c +++ b/drivers/video/fbdev/omap2/displays-new/panel-dpi.c @@ -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, }, }; |