splash screen on the stm32f769 disco board

Get timings from panel instead of read device tree.

Signed-off-by Yannick Fertré <[email protected]>

---
 drivers/video/panel-uclass.c | 11 +++++++++++
 include/panel.h              | 18 ++++++++++++++++++
 2 files changed, 29 insertions(+)

Get timings from panel instead of read device tree.

Signed-off-by Yannick Fertré <[email protected]>

---
 drivers/video/panel-uclass.c | 11 +++++++++++
 include/panel.h              | 18 ++++++++++++++++++
 2 files changed, 29 insertions(+)

Manage a bridge insert between the display controller & a panel.

Signed-off-by Yannick Fertré <[email protected]>

---
 drivers/video/stm32/stm32_ltdc.c | 154 +++++++++++++++++++++++----------------
 1 file changed, 92 insertions(+), 62 deletions(-)

drivers/video/stm32/stm32_ltdc.c +0 -0

index dc6c889..4a1db5e 100644

drivers/video/stm32/stm32_ltdc.c +7 -5

-	rate = clk_set_rate(&pclk, priv->timing.pixelclock.typ);
-	if (rate < 0) {
-		debug("%s: fail to set pixel clock %d hz %d hz\n",
-		      __func__, priv->timing.pixelclock.typ, rate);
-		return rate;
+#ifdef CONFIG_VIDEO_BRIDGE
+	ret = uclass_get_device(UCLASS_VIDEO_BRIDGE, 0, &bridge);
+	if (ret)
+		debug("No video bridge, or no backlight on bridge\n");
+
+	if (bridge) {
+		ret = video_bridge_attach(bridge);

drivers/video/stm32/stm32_ltdc.c +13 -0

+#ifdef CONFIG_VIDEO_BRIDGE
+	if (bridge) {
+		ret = video_bridge_set_backlight(bridge, 80);
+		if (ret) {
+			dev_err(dev, "fail to set backlight\n");
+			return ret;
+		}
+	} else {
+		ret = panel_enable_backlight(panel);
+		if (ret) {
+			dev_err(dev, "panel %s enable backlight error %d\n",
+				panel->name, ret);
+			return ret;

Mipi_display.c contains a set of dsi helpers. This file is a copy of file drm_mipi_dsi.c (linux kernel).

Signed-off-by Yannick Fertré <[email protected]>

---
 drivers/video/Kconfig        |   9 +
 drivers/video/Makefile       |   1 +
 drivers/video/mipi_display.c | 817 +++++++++++++++++++++++++++++++++++++++++++
 include/mipi_display.h       | 257 +++++++++++++-
 4 files changed, 1083 insertions(+), 1 deletion(-)
 create mode 100644 drivers/video/mipi_display.c

drivers/video/Kconfig +0 -0

index 5ee9032..560da1a 100644

drivers/video/Kconfig +5 -0

+       help
+         Support MIPI DSI interface for driving a MIPI compatible device.
+         The MIPI Display Serial Interface (MIPI DSI) defines a high-speed
+         serial interface between a host processor and a display module.
+
 config CONSOLE_NORMAL

include/mipi_display.h +79 -1

index ddcc8ca..5c3dbbe 100644
@@ -4,12 +4,16 @@
  *
  * Copyright (C) 2010 Guennadi Liakhovetski <[email protected]>
  * Copyright (C) 2006 Nokia Corporation
- * Author: Imre Deak <[email protected]>
+ * Copyright (C) 2018 STMicroelectronics - All Rights Reserved
+ * Author(s): Imre Deak <[email protected]>
+ *            Yannick Fertre <[email protected]>
+ *            Philippe Cornu <[email protected]>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
+
 #ifndef MIPI_DISPLAY_H
 #define MIPI_DISPLAY_H
 

@@ -115,6 +119,14 @@ enum {
        MIPI_DCS_READ_MEMORY_CONTINUE   = 0x3E,
        MIPI_DCS_SET_TEAR_SCANLINE      = 0x44,
        MIPI_DCS_GET_SCANLINE           = 0x45,
+       MIPI_DCS_SET_DISPLAY_BRIGHTNESS = 0x51,         /* MIPI DCS 1.3 */
+       MIPI_DCS_GET_DISPLAY_BRIGHTNESS = 0x52,         /* MIPI DCS 1.3 */
+       MIPI_DCS_WRITE_CONTROL_DISPLAY  = 0x53,         /* MIPI DCS 1.3 */
+       MIPI_DCS_GET_CONTROL_DISPLAY    = 0x54,         /* MIPI DCS 1.3 */
+       MIPI_DCS_WRITE_POWER_SAVE       = 0x55,         /* MIPI DCS 1.3 */
+       MIPI_DCS_GET_POWER_SAVE         = 0x56,         /* MIPI DCS 1.3 */
+       MIPI_DCS_SET_CABC_MIN_BRIGHTNESS = 0x5E,        /* MIPI DCS 1.3 */
+       MIPI_DCS_GET_CABC_MIN_BRIGHTNESS = 0x5F,        /* MIPI DCS 1.3 */
        MIPI_DCS_READ_DDB_START         = 0xA1,
        MIPI_DCS_READ_DDB_CONTINUE      = 0xA8,
 };

@@ -127,4 +139,247 @@ enum {
 #define MIPI_DCS_PIXEL_FMT_8BIT                2
 #define MIPI_DCS_PIXEL_FMT_3BIT                1
 
+struct mipi_dsi_host;
+struct mipi_dsi_device;
+
+/* request ACK from peripheral */
+#define MIPI_DSI_MSG_REQ_ACK   BIT(0)
+/* use Low Power Mode to transmit message */
+#define MIPI_DSI_MSG_USE_LPM   BIT(1)
+
+/**
+ * struct mipi_dsi_msg - read/write DSI buffer
+ * @channel: virtual channel id
+ * @type: payload data type
+ * @flags: flags controlling this message transmission
+ * @tx_len: length of @tx_buf
+ * @tx_buf: data to be written
+ * @rx_len: length of @rx_buf
+ * @rx_buf: data to be read, or NULL
+ */
+struct mipi_dsi_msg {
+       u8 channel;
+       u8 type;
+       u16 flags;
+
+       size_t tx_len;
+       const void *tx_buf;
+
+       size_t rx_len;
+       void *rx_buf;
+};
+
+bool mipi_dsi_packet_format_is_short(u8 type);
+bool mipi_dsi_packet_format_is_long(u8 type);
+
+/**
+ * struct mipi_dsi_packet - represents a MIPI DSI packet in protocol format
+ * @size: size (in bytes) of the packet
+ * @header: the four bytes that make up the header (Data ID, Word Count or
+ *     Packet Data, and ECC)
+ * @payload_length: number of bytes in the payload
+ * @payload: a pointer to a buffer containing the payload, if any
+ */
+struct mipi_dsi_packet {
+       size_t size;
+       u8 header[4];
+       size_t payload_length;
+       const u8 *payload;
+};
+
+int mipi_dsi_create_packet(struct mipi_dsi_packet *packet,
+                          const struct mipi_dsi_msg *msg);
+
+/**
+ * struct mipi_dsi_host_ops - DSI bus operations
+ * @attach: attach DSI device to DSI host
+ * @detach: detach DSI device from DSI host
+ * @transfer: transmit a DSI packet
+ *
+ * DSI packets transmitted by .transfer() are passed in as mipi_dsi_msg
+ * structures. This structure contains information about the type of packet
+ * being transmitted as well as the transmit and receive buffers. When an
+ * error is encountered during transmission, this function will return a
+ * negative error code. On success it shall return the number of bytes
+ * transmitted for write packets or the number of bytes received for read
+ * packets.
+ *
+ * Note that typically DSI packet transmission is atomic, so the .transfer()

include/mipi_display.h +26 -1

+ssize_t mipi_dsi_dcs_write(struct mipi_dsi_device *dsi, u8 cmd,
+                          const void *data, size_t len);
+ssize_t mipi_dsi_dcs_read(struct mipi_dsi_device *dsi, u8 cmd, void *data,
+                         size_t len);
+int mipi_dsi_dcs_nop(struct mipi_dsi_device *dsi);
+int mipi_dsi_dcs_soft_reset(struct mipi_dsi_device *dsi);
+int mipi_dsi_dcs_get_power_mode(struct mipi_dsi_device *dsi, u8 *mode);
+int mipi_dsi_dcs_get_pixel_format(struct mipi_dsi_device *dsi, u8 *format);
+int mipi_dsi_dcs_enter_sleep_mode(struct mipi_dsi_device *dsi);
+int mipi_dsi_dcs_exit_sleep_mode(struct mipi_dsi_device *dsi);
+int mipi_dsi_dcs_set_display_off(struct mipi_dsi_device *dsi);
+int mipi_dsi_dcs_set_display_on(struct mipi_dsi_device *dsi);
+int mipi_dsi_dcs_set_column_address(struct mipi_dsi_device *dsi, u16 start,
+                                   u16 end);
+int mipi_dsi_dcs_set_page_address(struct mipi_dsi_device *dsi, u16 start,
+                                 u16 end);
+int mipi_dsi_dcs_set_tear_off(struct mipi_dsi_device *dsi);
+int mipi_dsi_dcs_set_tear_on(struct mipi_dsi_device *dsi,
+                            enum mipi_dsi_dcs_tear_mode mode);
+int mipi_dsi_dcs_set_pixel_format(struct mipi_dsi_device *dsi, u8 format);
+int mipi_dsi_dcs_set_tear_scanline(struct mipi_dsi_device *dsi, u16 scanline);
+int mipi_dsi_dcs_set_display_brightness(struct mipi_dsi_device *dsi,
+                                       u16 brightness);
+int mipi_dsi_dcs_get_display_brightness(struct mipi_dsi_device *dsi,
+                                       u16 *brightness);
+
 #endif
--

1.9.1

Support for Orise Tech otm8009a 480p dsi 2dl video mode panel.

Signed-off-by Yannick Fertré <[email protected]>

---
 drivers/video/Kconfig              |   8 +
 drivers/video/Makefile             |   1 +
 drivers/video/orisetech_otm8009a.c | 366 +++++++++++++++++++++++++++++++++++++
 3 files changed, 375 insertions(+)
 create mode 100644 drivers/video/orisetech_otm8009a.c

Support for Raydium RM68200 720p dsi 2dl video mode panel. This rm68200 panel driver is based on the Linux Kernel driver from drivers/gpu/drm/panel/panel-raydium-rm68200.c.

Signed-off-by Yannick Fertré <[email protected]>

---
 drivers/video/Kconfig           |   8 +
 drivers/video/Makefile          |   1 +
 drivers/video/raydium-rm68200.c | 338 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 347 insertions(+)
 create mode 100644 drivers/video/raydium-rm68200.c

Add a Synopsys Designware MIPI DSI host bridge driver, based on the Rockchip version from rockchip/dw-mipi-dsi.c with phy & bridge APIs.

Signed-off-by Yannick Fertré <[email protected]>

---
 drivers/video/Kconfig       |   9 +
 drivers/video/Makefile      |   1 +
 drivers/video/dw_mipi_dsi.c | 826 ++++++++++++++++++++++++++++++++++++++++++++
 include/dw_mipi_dsi.h       |  32 ++
 4 files changed, 868 insertions(+)
 create mode 100644 drivers/video/dw_mipi_dsi.c
 create mode 100644 include/dw_mipi_dsi.h

drivers/video/Kconfig +9 -0

index e1029e5..3ccc8df 100644
@@ -674,6 +674,15 @@ config VIDEO_DW_HDMI
          rather requires a SoC-specific glue driver to call it), it
          can not be enabled from the configuration menu.
 
+config VIDEO_DW_MIPI_DSI
+       bool
+       help
+         Enables the common driver code for the Synopsis Designware
+         MIPI DSI block found in SoCs from various vendors.
+         As this does not provide any functionality by itself (but
+         rather requires a SoC-specific glue driver to call it), it
+         can not be enabled from the configuration menu.
+
 config VIDEO_SIMPLE
        bool "Simple display driver for preconfigured display"
        help

drivers/video/Makefile +1 -0

index 018343f..bb2fd3c 100644
@@ -52,6 +52,7 @@ obj-$(CONFIG_FORMIKE) += formike.o
 obj-$(CONFIG_LG4573) += lg4573.o
 obj-$(CONFIG_AM335X_LCD) += am335x-fb.o
 obj-$(CONFIG_VIDEO_DW_HDMI) += dw_hdmi.o
+obj-$(CONFIG_VIDEO_DW_MIPI_DSI) += dw_mipi_dsi.o
 obj-${CONFIG_VIDEO_MIPI_DSI} += mipi_display.o
 obj-$(CONFIG_VIDEO_SIMPLE) += simplefb.o
 obj-${CONFIG_VIDEO_TEGRA124} += tegra124/

drivers/video/dw_mipi_dsi.c new file +14 -0

new file mode 100644
index 0000000..db278c5
@@ -0,0 +1,826 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2016, Fuzhou Rockchip Electronics Co., Ltd
+ * Copyright (C) 2018, STMicroelectronics - All Rights Reserved
+ * Author(s): Philippe Cornu <[email protected]> for STMicroelectronics.
+ *            Yannick Fertre <[email protected]> for STMicroelectronics.
+ *
+ * This generic Synopsys DesignWare MIPI DSI host driver is inspired from
+ * the Linux Kernel driver drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c.
+ */
+
+#include <common.h>
+#include <clk.h>
+#include <dm.h>

include/dw_mipi_dsi.h new file +20 -0

new file mode 100644
index 0000000..f8482f7
@@ -0,0 +1,32 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2017-2018, STMicroelectronics - All Rights Reserved
+ *
+ * Authors: Yannick Fertre <[email protected]>
+ *          Philippe Cornu <[email protected]>
+ *
+ * This generic Synopsys DesignWare MIPI DSI host include is inspired from
+ * the Linux Kernel include file include/drm/bridge/dw_mipi_dsi.h.
+ */
+
+#ifndef __DW_MIPI_DSI__
+#define __DW_MIPI_DSI__
+
+#include <mipi_display.h>
+
+struct dw_mipi_dsi_phy_ops {
+       int (*init)(void *priv_data);
+       int (*get_lane_mbps)(void *priv_data, struct display_timing *timings,
+                            u32 lanes, u32 format, unsigned int *lane_mbps);