From: Geert Uytterhoeven geert+renesas@glider.be
[ Upstream commit 3986457110a054466bf02f9c4a85aa2bba96177b ]
Commit 5cca30ebe089be23 ("drm/rcar-du: Add LVDS_LANES quirk") states that LVDS lanes 1 and 3 are inverted on R-Car H2 ES1 only, and that the problem has been fixed in newer revisions.
However, the code didn't take into account the actual hardware revision, thus applying the quirk also on newer hardware revisions, causing green color reversals.
Fix this by applying the quirk when running on R-Car H2 ES1.x only.
Reported-by: Yoshihiro Shimoda yoshihiro.shimoda.uh@renesas.com Fixes: 5cca30ebe089be23 ("drm/rcar-du: Add LVDS_LANES quirk") Signed-off-by: Geert Uytterhoeven geert+renesas@glider.be Tested-by: Yoshihiro Shimoda yoshihiro.shimoda.uh@renesas.com Reviewed-by: Ulrich Hecht uli+renesas@fpond.eu Reviewed-by: Laurent Pinchart laurent.pinchart+renesas@ideasonboard.com Signed-off-by: Laurent Pinchart laurent.pinchart+renesas@ideasonboard.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/rcar-du/rcar_lvds.c | 28 +++++++++++++++++++++------- 1 file changed, 21 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/rcar-du/rcar_lvds.c b/drivers/gpu/drm/rcar-du/rcar_lvds.c index 3fc7e6899cab5..50c11a7f0467f 100644 --- a/drivers/gpu/drm/rcar-du/rcar_lvds.c +++ b/drivers/gpu/drm/rcar-du/rcar_lvds.c @@ -16,6 +16,7 @@ #include <linux/of_graph.h> #include <linux/platform_device.h> #include <linux/slab.h> +#include <linux/sys_soc.h>
#include <drm/drm_atomic.h> #include <drm/drm_atomic_helper.h> @@ -842,8 +843,23 @@ static int rcar_lvds_get_clocks(struct rcar_lvds *lvds) return 0; }
+static const struct rcar_lvds_device_info rcar_lvds_r8a7790es1_info = { + .gen = 2, + .quirks = RCAR_LVDS_QUIRK_LANES, + .pll_setup = rcar_lvds_pll_setup_gen2, +}; + +static const struct soc_device_attribute lvds_quirk_matches[] = { + { + .soc_id = "r8a7790", .revision = "ES1.*", + .data = &rcar_lvds_r8a7790es1_info, + }, + { /* sentinel */ } +}; + static int rcar_lvds_probe(struct platform_device *pdev) { + const struct soc_device_attribute *attr; struct rcar_lvds *lvds; struct resource *mem; int ret; @@ -857,6 +873,10 @@ static int rcar_lvds_probe(struct platform_device *pdev) lvds->dev = &pdev->dev; lvds->info = of_device_get_match_data(&pdev->dev);
+ attr = soc_device_match(lvds_quirk_matches); + if (attr) + lvds->info = attr->data; + ret = rcar_lvds_parse_dt(lvds); if (ret < 0) return ret; @@ -893,12 +913,6 @@ static const struct rcar_lvds_device_info rcar_lvds_gen2_info = { .pll_setup = rcar_lvds_pll_setup_gen2, };
-static const struct rcar_lvds_device_info rcar_lvds_r8a7790_info = { - .gen = 2, - .quirks = RCAR_LVDS_QUIRK_LANES, - .pll_setup = rcar_lvds_pll_setup_gen2, -}; - static const struct rcar_lvds_device_info rcar_lvds_gen3_info = { .gen = 3, .quirks = RCAR_LVDS_QUIRK_PWD, @@ -930,7 +944,7 @@ static const struct of_device_id rcar_lvds_of_table[] = { { .compatible = "renesas,r8a7744-lvds", .data = &rcar_lvds_gen2_info }, { .compatible = "renesas,r8a774a1-lvds", .data = &rcar_lvds_gen3_info }, { .compatible = "renesas,r8a774c0-lvds", .data = &rcar_lvds_r8a77990_info }, - { .compatible = "renesas,r8a7790-lvds", .data = &rcar_lvds_r8a7790_info }, + { .compatible = "renesas,r8a7790-lvds", .data = &rcar_lvds_gen2_info }, { .compatible = "renesas,r8a7791-lvds", .data = &rcar_lvds_gen2_info }, { .compatible = "renesas,r8a7793-lvds", .data = &rcar_lvds_gen2_info }, { .compatible = "renesas,r8a7795-lvds", .data = &rcar_lvds_gen3_info },