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openwrt/target/linux/bcm27xx/patches-5.10/950-0650-Support-RPi-DPI-in...
Álvaro Fernández Rojas 8299d1f057 bcm27xx: add kernel 5.10 support 
Rebased RPi foundation patches on linux 5.10.59, removed applied and reverted
patches, wireless patches and defconfig patches.

bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 4B v1.1 4G
bcm2711: boot tested on RPi 4B v1.1 4G

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2021-08-21 19:07:07 +02:00

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From 16edbdfde51fc3180cecb00ad0aa311bd4567650 Mon Sep 17 00:00:00 2001
From: Joerg Quinten <aBUGSworstnightmare@gmail.com>
Date: Fri, 18 Jun 2021 13:02:29 +0200
Subject: [PATCH] Support RPi DPI interface in mode6 for 18-bit color
A matching media bus format was added and an overlay for using it,
both with FB and VC4 was added as well.
Signed-off-by: Joerg Quinten <aBUGSworstnightmare@gmail.com>
---
.../bindings/display/panel/panel-simple.yaml | 2 +
.../media/v4l/subdev-formats.rst | 74 +++++++++++++++++++
drivers/gpu/drm/panel/panel-simple.c | 35 +++++++++
drivers/gpu/drm/vc4/vc4_dpi.c | 10 +++
include/uapi/linux/media-bus-format.h | 4 +-
5 files changed, 124 insertions(+), 1 deletion(-)
--- a/Documentation/devicetree/bindings/display/panel/panel-simple.yaml
+++ b/Documentation/devicetree/bindings/display/panel/panel-simple.yaml
@@ -147,6 +147,8 @@ properties:
- ivo,m133nwf4-r0
# Innolux AT043TN24 4.3" WQVGA TFT LCD panel
- innolux,at043tn24
+ # Innolux AT056tN53V1 5.6" VGA (640x480) TFT LCD panel
+ - innolux,at056tn53v1
# Innolux AT070TN92 7.0" WQVGA TFT LCD panel
- innolux,at070tn92
# Innolux G070Y2-L01 7" WVGA (800x480) TFT LCD panel
--- a/Documentation/userspace-api/media/v4l/subdev-formats.rst
+++ b/Documentation/userspace-api/media/v4l/subdev-formats.rst
@@ -908,6 +908,43 @@ The following tables list existing packe
- g\ :sub:`5`
- g\ :sub:`4`
- g\ :sub:`3`
+ * .. _MEDIA-BUS-FMT-BGR666-1X18:
+
+ - MEDIA_BUS_FMT_RGB666_1X18
+ - 0x101f
+ -
+ -
+ -
+ -
+ -
+ -
+ -
+ -
+ -
+ -
+ -
+ -
+ -
+ -
+ -
+ - b\ :sub:`5`
+ - b\ :sub:`4`
+ - b\ :sub:`3`
+ - b\ :sub:`2`
+ - b\ :sub:`1`
+ - b\ :sub:`0`
+ - g\ :sub:`5`
+ - g\ :sub:`4`
+ - g\ :sub:`3`
+ - g\ :sub:`2`
+ - g\ :sub:`1`
+ - g\ :sub:`0`
+ - r\ :sub:`5`
+ - r\ :sub:`4`
+ - r\ :sub:`3`
+ - r\ :sub:`2`
+ - r\ :sub:`1`
+ - r\ :sub:`0`
* .. _MEDIA-BUS-FMT-RGB666-1X18:
- MEDIA_BUS_FMT_RGB666_1X18
@@ -982,6 +1019,43 @@ The following tables list existing packe
- g\ :sub:`2`
- g\ :sub:`1`
- g\ :sub:`0`
+ * .. _MEDIA-BUS-FMT-BGR666-1X24_CPADHI:
+
+ - MEDIA_BUS_FMT_BGR666_1X24_CPADHI
+ - 0x101e
+ -
+ -
+ -
+ -
+ -
+ -
+ -
+ -
+ -
+ - 0
+ - 0
+ - b\ :sub:`5`
+ - b\ :sub:`4`
+ - b\ :sub:`3`
+ - b\ :sub:`2`
+ - b\ :sub:`1`
+ - b\ :sub:`0`
+ - 0
+ - 0
+ - g\ :sub:`5`
+ - g\ :sub:`4`
+ - g\ :sub:`3`
+ - g\ :sub:`2`
+ - g\ :sub:`1`
+ - g\ :sub:`0`
+ - 0
+ - 0
+ - r\ :sub:`5`
+ - r\ :sub:`4`
+ - r\ :sub:`3`
+ - r\ :sub:`2`
+ - r\ :sub:`1`
+ - r\ :sub:`0`
* .. _MEDIA-BUS-FMT-RGB666-1X24_CPADHI:
- MEDIA_BUS_FMT_RGB666_1X24_CPADHI
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -2093,6 +2093,38 @@ static const struct panel_desc innolux_a
.bus_flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE,
};
+static const struct display_timing innolux_at056tn53v1_timing = {
+ .pixelclock = { 39700000, 39700000, 39700000},
+ .hactive = { 640, 640, 640 },
+ .hfront_porch = { 16, 16, 16 },
+ .hback_porch = { 134, 134, 134 },
+ .hsync_len = { 10, 10, 10},
+ .vactive = { 480, 480, 480 },
+ .vfront_porch = { 32, 32, 32},
+ .vback_porch = { 11, 11, 11 },
+ .vsync_len = { 2, 2, 2 },
+ .flags = DRM_MODE_FLAG_PVSYNC | DRM_MODE_FLAG_PHSYNC,
+};
+
+static const struct panel_desc innolux_at056tn53v1 = {
+ .timings = &innolux_at056tn53v1_timing,
+ .num_timings = 1,
+ .bpc = 6,
+ .size = {
+ .width = 112,
+ .height = 84,
+ },
+ .delay = {
+ .prepare = 50,
+ .enable = 200,
+ .disable = 110,
+ .unprepare = 200,
+ },
+ .bus_format = MEDIA_BUS_FMT_BGR666_1X24_CPADHI,
+ .bus_flags = DRM_BUS_FLAG_PIXDATA_SAMPLE_POSEDGE,
+ .connector_type = DRM_MODE_CONNECTOR_DPI,
+};
+
static const struct drm_display_mode innolux_at070tn92_mode = {
.clock = 33333,
.hdisplay = 800,
@@ -4076,6 +4108,9 @@ static const struct of_device_id platfor
.compatible = "innolux,at043tn24",
.data = &innolux_at043tn24,
}, {
+ .compatible = "innolux,at056tn53v1",
+ .data = &innolux_at056tn53v1,
+ }, {
.compatible = "innolux,at070tn92",
.data = &innolux_at070tn92,
}, {
--- a/drivers/gpu/drm/vc4/vc4_dpi.c
+++ b/drivers/gpu/drm/vc4/vc4_dpi.c
@@ -165,10 +165,20 @@ static void vc4_dpi_encoder_enable(struc
dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_2,
DPI_FORMAT);
break;
+ case MEDIA_BUS_FMT_BGR666_1X24_CPADHI:
+ dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_2,
+ DPI_FORMAT);
+ dpi_c |= VC4_SET_FIELD(DPI_ORDER_BGR, DPI_ORDER);
+ break;
case MEDIA_BUS_FMT_RGB666_1X18:
dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_1,
DPI_FORMAT);
break;
+ case MEDIA_BUS_FMT_BGR666_1X18:
+ dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_1,
+ DPI_FORMAT);
+ dpi_c |= VC4_SET_FIELD(DPI_ORDER_BGR, DPI_ORDER);
+ break;
case MEDIA_BUS_FMT_RGB565_1X16:
dpi_c |= VC4_SET_FIELD(DPI_FORMAT_16BIT_565_RGB_3,
DPI_FORMAT);
--- a/include/uapi/linux/media-bus-format.h
+++ b/include/uapi/linux/media-bus-format.h
@@ -34,7 +34,7 @@
#define MEDIA_BUS_FMT_FIXED 0x0001
-/* RGB - next is 0x101d */
+/* RGB - next is 0x1020 */
#define MEDIA_BUS_FMT_RGB444_1X12 0x1016
#define MEDIA_BUS_FMT_RGB444_2X8_PADHI_BE 0x1001
#define MEDIA_BUS_FMT_RGB444_2X8_PADHI_LE 0x1002
@@ -45,8 +45,10 @@
#define MEDIA_BUS_FMT_BGR565_2X8_LE 0x1006
#define MEDIA_BUS_FMT_RGB565_2X8_BE 0x1007
#define MEDIA_BUS_FMT_RGB565_2X8_LE 0x1008
+#define MEDIA_BUS_FMT_BGR666_1X18 0x101f
#define MEDIA_BUS_FMT_RGB666_1X18 0x1009
#define MEDIA_BUS_FMT_RBG888_1X24 0x100e
+#define MEDIA_BUS_FMT_BGR666_1X24_CPADHI 0x101e
#define MEDIA_BUS_FMT_RGB666_1X24_CPADHI 0x1015
#define MEDIA_BUS_FMT_RGB666_1X7X3_SPWG 0x1010
#define MEDIA_BUS_FMT_BGR888_1X24 0x1013
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