[RFC PATCH] drm/panel: simple: panel-dpi: use bus-format to set bpc and bus_format

[Max Krummenacher]

Use the new property bus-format to set the enum bus_format and bpc.
Completes: commit 4a1d0dbc8332 ("drm/panel: simple: add panel-dpi support")

Signed-off-by: Max Krummenacher <max.krummenacher at toradex.com>

---

 drivers/gpu/drm/panel/panel-simple.c | 32 ++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

Relates to the discussion: https://lore.kernel.org/all/20220201110717.3585-1-cniedermaier@dh-electronics.com/

Max

diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index c5f133667a2d..5c07260de71c 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -453,6 +453,7 @@ static int panel_dpi_probe(struct device *dev,
 	struct panel_desc *desc;
 	unsigned int bus_flags;
 	struct videomode vm;
+	const char *format = "";
 	int ret;
 
 	np = dev->of_node;
@@ -477,6 +478,37 @@ static int panel_dpi_probe(struct device *dev,
 	of_property_read_u32(np, "width-mm", &desc->size.width);
 	of_property_read_u32(np, "height-mm", &desc->size.height);
 
+	of_property_read_string(np, "bus-format", &format);
+	if (!strcmp(format, "BGR888_1X24")) {
+		desc->bpc = 8;
+		desc->bus_format = MEDIA_BUS_FMT_BGR888_1X24;
+	} else if (!strcmp(format, "GBR888_1X24")) {
+		desc->bpc = 8;
+		desc->bus_format = MEDIA_BUS_FMT_GBR888_1X24;
+	} else if (!strcmp(format, "RBG888_1X24")) {
+		desc->bpc = 8;
+		desc->bus_format = MEDIA_BUS_FMT_RBG888_1X24;
+	} else if (!strcmp(format, "RGB444_1X12")) {
+		desc->bpc = 6;
+		desc->bus_format = MEDIA_BUS_FMT_RGB444_1X12;
+	} else if (!strcmp(format, "RGB565_1X16")) {
+		desc->bpc = 6;
+		desc->bus_format = MEDIA_BUS_FMT_RGB565_1X16;
+	} else if (!strcmp(format, "RGB666_1X18")) {
+		desc->bpc = 6;
+		desc->bus_format = MEDIA_BUS_FMT_RGB666_1X18;
+	} else if (!strcmp(format, "RGB666_1X24_CPADHI")) {
+		desc->bpc = 6;
+		desc->bus_format = MEDIA_BUS_FMT_RGB666_1X24_CPADHI;
+	} else if (!strcmp(format, "RGB888_1X24")) {
+		desc->bpc = 8;
+		desc->bus_format = MEDIA_BUS_FMT_RGB888_1X24;
+	} else {
+		dev_err(dev, "%pOF: missing or unknown bus-format property\n",
+			np);
+		return -EINVAL;
+	}
+
 	/* Extract bus_flags from display_timing */
 	bus_flags = 0;
 	vm.flags = timing->flags;
-- 
2.20.1