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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (C) 2019 STMicroelectronics - All Rights Reserved
- * Author(s): Yannick Fertre <yannick.fertre@st.com> for STMicroelectronics.
- * Philippe Cornu <philippe.cornu@st.com> for STMicroelectronics.
- *
- * This otm8009a panel driver is inspired from the Linux Kernel driver
- * drivers/gpu/drm/panel/panel-orisetech-otm8009a.c.
- */
- #include <common.h>
- #include <backlight.h>
- #include <dm.h>
- #include <mipi_dsi.h>
- #include <panel.h>
- #include <asm/gpio.h>
- #include <dm/device_compat.h>
- #include <linux/delay.h>
- #include <power/regulator.h>
- #define OTM8009A_BACKLIGHT_DEFAULT 240
- #define OTM8009A_BACKLIGHT_MAX 255
- /* Manufacturer Command Set */
- #define MCS_ADRSFT 0x0000 /* Address Shift Function */
- #define MCS_PANSET 0xB3A6 /* Panel Type Setting */
- #define MCS_SD_CTRL 0xC0A2 /* Source Driver Timing Setting */
- #define MCS_P_DRV_M 0xC0B4 /* Panel Driving Mode */
- #define MCS_OSC_ADJ 0xC181 /* Oscillator Adjustment for Idle/Normal mode */
- #define MCS_RGB_VID_SET 0xC1A1 /* RGB Video Mode Setting */
- #define MCS_SD_PCH_CTRL 0xC480 /* Source Driver Precharge Control */
- #define MCS_NO_DOC1 0xC48A /* Command not documented */
- #define MCS_PWR_CTRL1 0xC580 /* Power Control Setting 1 */
- #define MCS_PWR_CTRL2 0xC590 /* Power Control Setting 2 for Normal Mode */
- #define MCS_PWR_CTRL4 0xC5B0 /* Power Control Setting 4 for DC Voltage */
- #define MCS_PANCTRLSET1 0xCB80 /* Panel Control Setting 1 */
- #define MCS_PANCTRLSET2 0xCB90 /* Panel Control Setting 2 */
- #define MCS_PANCTRLSET3 0xCBA0 /* Panel Control Setting 3 */
- #define MCS_PANCTRLSET4 0xCBB0 /* Panel Control Setting 4 */
- #define MCS_PANCTRLSET5 0xCBC0 /* Panel Control Setting 5 */
- #define MCS_PANCTRLSET6 0xCBD0 /* Panel Control Setting 6 */
- #define MCS_PANCTRLSET7 0xCBE0 /* Panel Control Setting 7 */
- #define MCS_PANCTRLSET8 0xCBF0 /* Panel Control Setting 8 */
- #define MCS_PANU2D1 0xCC80 /* Panel U2D Setting 1 */
- #define MCS_PANU2D2 0xCC90 /* Panel U2D Setting 2 */
- #define MCS_PANU2D3 0xCCA0 /* Panel U2D Setting 3 */
- #define MCS_PAND2U1 0xCCB0 /* Panel D2U Setting 1 */
- #define MCS_PAND2U2 0xCCC0 /* Panel D2U Setting 2 */
- #define MCS_PAND2U3 0xCCD0 /* Panel D2U Setting 3 */
- #define MCS_GOAVST 0xCE80 /* GOA VST Setting */
- #define MCS_GOACLKA1 0xCEA0 /* GOA CLKA1 Setting */
- #define MCS_GOACLKA3 0xCEB0 /* GOA CLKA3 Setting */
- #define MCS_GOAECLK 0xCFC0 /* GOA ECLK Setting */
- #define MCS_NO_DOC2 0xCFD0 /* Command not documented */
- #define MCS_GVDDSET 0xD800 /* GVDD/NGVDD */
- #define MCS_VCOMDC 0xD900 /* VCOM Voltage Setting */
- #define MCS_GMCT2_2P 0xE100 /* Gamma Correction 2.2+ Setting */
- #define MCS_GMCT2_2N 0xE200 /* Gamma Correction 2.2- Setting */
- #define MCS_NO_DOC3 0xF5B6 /* Command not documented */
- #define MCS_CMD2_ENA1 0xFF00 /* Enable Access Command2 "CMD2" */
- #define MCS_CMD2_ENA2 0xFF80 /* Enable Access Orise Command2 */
- struct otm8009a_panel_priv {
- struct udevice *reg;
- struct gpio_desc reset;
- };
- static const struct display_timing default_timing = {
- .pixelclock.typ = 29700000,
- .hactive.typ = 480,
- .hfront_porch.typ = 98,
- .hback_porch.typ = 98,
- .hsync_len.typ = 32,
- .vactive.typ = 800,
- .vfront_porch.typ = 15,
- .vback_porch.typ = 14,
- .vsync_len.typ = 10,
- };
- static void otm8009a_dcs_write_buf(struct udevice *dev, const void *data,
- size_t len)
- {
- struct mipi_dsi_panel_plat *plat = dev_get_platdata(dev);
- struct mipi_dsi_device *device = plat->device;
- if (mipi_dsi_dcs_write_buffer(device, data, len) < 0)
- dev_err(dev, "mipi dsi dcs write buffer failed\n");
- }
- static void otm8009a_dcs_write_buf_hs(struct udevice *dev, const void *data,
- size_t len)
- {
- struct mipi_dsi_panel_plat *plat = dev_get_platdata(dev);
- struct mipi_dsi_device *device = plat->device;
- /* data will be sent in dsi hs mode (ie. no lpm) */
- device->mode_flags &= ~MIPI_DSI_MODE_LPM;
- if (mipi_dsi_dcs_write_buffer(device, data, len) < 0)
- dev_err(dev, "mipi dsi dcs write buffer failed\n");
- /* restore back the dsi lpm mode */
- device->mode_flags |= MIPI_DSI_MODE_LPM;
- }
- #define dcs_write_seq(dev, seq...) \
- ({ \
- static const u8 d[] = { seq }; \
- otm8009a_dcs_write_buf(dev, d, ARRAY_SIZE(d)); \
- })
- #define dcs_write_seq_hs(dev, seq...) \
- ({ \
- static const u8 d[] = { seq }; \
- otm8009a_dcs_write_buf_hs(dev, d, ARRAY_SIZE(d)); \
- })
- #define dcs_write_cmd_at(dev, cmd, seq...) \
- ({ \
- static const u16 c = cmd; \
- struct udevice *device = dev; \
- dcs_write_seq(device, MCS_ADRSFT, (c) & 0xFF); \
- dcs_write_seq(device, (c) >> 8, seq); \
- })
- static int otm8009a_init_sequence(struct udevice *dev)
- {
- struct mipi_dsi_panel_plat *plat = dev_get_platdata(dev);
- struct mipi_dsi_device *device = plat->device;
- int ret;
- /* Enter CMD2 */
- dcs_write_cmd_at(dev, MCS_CMD2_ENA1, 0x80, 0x09, 0x01);
- /* Enter Orise Command2 */
- dcs_write_cmd_at(dev, MCS_CMD2_ENA2, 0x80, 0x09);
- dcs_write_cmd_at(dev, MCS_SD_PCH_CTRL, 0x30);
- mdelay(10);
- dcs_write_cmd_at(dev, MCS_NO_DOC1, 0x40);
- mdelay(10);
- dcs_write_cmd_at(dev, MCS_PWR_CTRL4 + 1, 0xA9);
- dcs_write_cmd_at(dev, MCS_PWR_CTRL2 + 1, 0x34);
- dcs_write_cmd_at(dev, MCS_P_DRV_M, 0x50);
- dcs_write_cmd_at(dev, MCS_VCOMDC, 0x4E);
- dcs_write_cmd_at(dev, MCS_OSC_ADJ, 0x66); /* 65Hz */
- dcs_write_cmd_at(dev, MCS_PWR_CTRL2 + 2, 0x01);
- dcs_write_cmd_at(dev, MCS_PWR_CTRL2 + 5, 0x34);
- dcs_write_cmd_at(dev, MCS_PWR_CTRL2 + 4, 0x33);
- dcs_write_cmd_at(dev, MCS_GVDDSET, 0x79, 0x79);
- dcs_write_cmd_at(dev, MCS_SD_CTRL + 1, 0x1B);
- dcs_write_cmd_at(dev, MCS_PWR_CTRL1 + 2, 0x83);
- dcs_write_cmd_at(dev, MCS_SD_PCH_CTRL + 1, 0x83);
- dcs_write_cmd_at(dev, MCS_RGB_VID_SET, 0x0E);
- dcs_write_cmd_at(dev, MCS_PANSET, 0x00, 0x01);
- dcs_write_cmd_at(dev, MCS_GOAVST, 0x85, 0x01, 0x00, 0x84, 0x01, 0x00);
- dcs_write_cmd_at(dev, MCS_GOACLKA1, 0x18, 0x04, 0x03, 0x39, 0x00, 0x00,
- 0x00, 0x18, 0x03, 0x03, 0x3A, 0x00, 0x00, 0x00);
- dcs_write_cmd_at(dev, MCS_GOACLKA3, 0x18, 0x02, 0x03, 0x3B, 0x00, 0x00,
- 0x00, 0x18, 0x01, 0x03, 0x3C, 0x00, 0x00, 0x00);
- dcs_write_cmd_at(dev, MCS_GOAECLK, 0x01, 0x01, 0x20, 0x20, 0x00, 0x00,
- 0x01, 0x02, 0x00, 0x00);
- dcs_write_cmd_at(dev, MCS_NO_DOC2, 0x00);
- dcs_write_cmd_at(dev, MCS_PANCTRLSET1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
- dcs_write_cmd_at(dev, MCS_PANCTRLSET2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0);
- dcs_write_cmd_at(dev, MCS_PANCTRLSET3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0);
- dcs_write_cmd_at(dev, MCS_PANCTRLSET4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
- dcs_write_cmd_at(dev, MCS_PANCTRLSET5, 0, 4, 4, 4, 4, 4, 0, 0, 0, 0,
- 0, 0, 0, 0, 0);
- dcs_write_cmd_at(dev, MCS_PANCTRLSET6, 0, 0, 0, 0, 0, 0, 4, 4, 4, 4,
- 4, 0, 0, 0, 0);
- dcs_write_cmd_at(dev, MCS_PANCTRLSET7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
- dcs_write_cmd_at(dev, MCS_PANCTRLSET8, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
- 0xFF, 0xFF, 0xFF, 0xFF, 0xFF);
- dcs_write_cmd_at(dev, MCS_PANU2D1, 0x00, 0x26, 0x09, 0x0B, 0x01, 0x25,
- 0x00, 0x00, 0x00, 0x00);
- dcs_write_cmd_at(dev, MCS_PANU2D2, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x26, 0x0A, 0x0C, 0x02);
- dcs_write_cmd_at(dev, MCS_PANU2D3, 0x25, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
- dcs_write_cmd_at(dev, MCS_PAND2U1, 0x00, 0x25, 0x0C, 0x0A, 0x02, 0x26,
- 0x00, 0x00, 0x00, 0x00);
- dcs_write_cmd_at(dev, MCS_PAND2U2, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x25, 0x0B, 0x09, 0x01);
- dcs_write_cmd_at(dev, MCS_PAND2U3, 0x26, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
- dcs_write_cmd_at(dev, MCS_PWR_CTRL1 + 1, 0x66);
- dcs_write_cmd_at(dev, MCS_NO_DOC3, 0x06);
- dcs_write_cmd_at(dev, MCS_GMCT2_2P, 0x00, 0x09, 0x0F, 0x0E, 0x07, 0x10,
- 0x0B, 0x0A, 0x04, 0x07, 0x0B, 0x08, 0x0F, 0x10, 0x0A,
- 0x01);
- dcs_write_cmd_at(dev, MCS_GMCT2_2N, 0x00, 0x09, 0x0F, 0x0E, 0x07, 0x10,
- 0x0B, 0x0A, 0x04, 0x07, 0x0B, 0x08, 0x0F, 0x10, 0x0A,
- 0x01);
- /* Exit CMD2 */
- dcs_write_cmd_at(dev, MCS_CMD2_ENA1, 0xFF, 0xFF, 0xFF);
- ret = mipi_dsi_dcs_nop(device);
- if (ret)
- return ret;
- ret = mipi_dsi_dcs_exit_sleep_mode(device);
- if (ret)
- return ret;
- /* Wait for sleep out exit */
- mdelay(120);
- /* Default portrait 480x800 rgb24 */
- dcs_write_seq(dev, MIPI_DCS_SET_ADDRESS_MODE, 0x00);
- ret = mipi_dsi_dcs_set_column_address(device, 0,
- default_timing.hactive.typ - 1);
- if (ret)
- return ret;
- ret = mipi_dsi_dcs_set_page_address(device, 0,
- default_timing.vactive.typ - 1);
- if (ret)
- return ret;
- /* See otm8009a driver documentation for pixel format descriptions */
- ret = mipi_dsi_dcs_set_pixel_format(device, MIPI_DCS_PIXEL_FMT_24BIT |
- MIPI_DCS_PIXEL_FMT_24BIT << 4);
- if (ret)
- return ret;
- /* Disable CABC feature */
- dcs_write_seq(dev, MIPI_DCS_WRITE_POWER_SAVE, 0x00);
- ret = mipi_dsi_dcs_set_display_on(device);
- if (ret)
- return ret;
- ret = mipi_dsi_dcs_nop(device);
- if (ret)
- return ret;
- /* Send Command GRAM memory write (no parameters) */
- dcs_write_seq(dev, MIPI_DCS_WRITE_MEMORY_START);
- return 0;
- }
- static int otm8009a_panel_enable_backlight(struct udevice *dev)
- {
- struct mipi_dsi_panel_plat *plat = dev_get_platdata(dev);
- struct mipi_dsi_device *device = plat->device;
- int ret;
- ret = mipi_dsi_attach(device);
- if (ret < 0)
- return ret;
- ret = otm8009a_init_sequence(dev);
- if (ret)
- return ret;
- /*
- * Power on the backlight with the requested brightness
- * Note We can not use mipi_dsi_dcs_set_display_brightness()
- * as otm8009a driver support only 8-bit brightness (1 param).
- */
- dcs_write_seq(dev, MIPI_DCS_SET_DISPLAY_BRIGHTNESS,
- OTM8009A_BACKLIGHT_DEFAULT);
- /* Update Brightness Control & Backlight */
- dcs_write_seq(dev, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x24);
- /* Update Brightness Control & Backlight */
- dcs_write_seq_hs(dev, MIPI_DCS_WRITE_CONTROL_DISPLAY);
- /* Need to wait a few time before sending the first image */
- mdelay(10);
- return 0;
- }
- static int otm8009a_panel_get_display_timing(struct udevice *dev,
- struct display_timing *timings)
- {
- memcpy(timings, &default_timing, sizeof(*timings));
- return 0;
- }
- static int otm8009a_panel_ofdata_to_platdata(struct udevice *dev)
- {
- struct otm8009a_panel_priv *priv = dev_get_priv(dev);
- int ret;
- if (IS_ENABLED(CONFIG_DM_REGULATOR)) {
- ret = device_get_supply_regulator(dev, "power-supply",
- &priv->reg);
- if (ret && ret != -ENOENT) {
- dev_err(dev, "Warning: cannot get power supply\n");
- return ret;
- }
- }
- ret = gpio_request_by_name(dev, "reset-gpios", 0, &priv->reset,
- GPIOD_IS_OUT);
- if (ret) {
- dev_err(dev, "warning: cannot get reset GPIO\n");
- if (ret != -ENOENT)
- return ret;
- }
- return 0;
- }
- static int otm8009a_panel_probe(struct udevice *dev)
- {
- struct otm8009a_panel_priv *priv = dev_get_priv(dev);
- struct mipi_dsi_panel_plat *plat = dev_get_platdata(dev);
- int ret;
- if (IS_ENABLED(CONFIG_DM_REGULATOR) && priv->reg) {
- dev_dbg(dev, "enable regulator '%s'\n", priv->reg->name);
- ret = regulator_set_enable(priv->reg, true);
- if (ret)
- return ret;
- }
- /* reset panel */
- dm_gpio_set_value(&priv->reset, true);
- mdelay(1); /* >50us */
- dm_gpio_set_value(&priv->reset, false);
- mdelay(10); /* >5ms */
- /* fill characteristics of DSI data link */
- plat->lanes = 2;
- plat->format = MIPI_DSI_FMT_RGB888;
- plat->mode_flags = MIPI_DSI_MODE_VIDEO |
- MIPI_DSI_MODE_VIDEO_BURST |
- MIPI_DSI_MODE_LPM;
- return 0;
- }
- static const struct panel_ops otm8009a_panel_ops = {
- .enable_backlight = otm8009a_panel_enable_backlight,
- .get_display_timing = otm8009a_panel_get_display_timing,
- };
- static const struct udevice_id otm8009a_panel_ids[] = {
- { .compatible = "orisetech,otm8009a" },
- { }
- };
- U_BOOT_DRIVER(otm8009a_panel) = {
- .name = "otm8009a_panel",
- .id = UCLASS_PANEL,
- .of_match = otm8009a_panel_ids,
- .ops = &otm8009a_panel_ops,
- .ofdata_to_platdata = otm8009a_panel_ofdata_to_platdata,
- .probe = otm8009a_panel_probe,
- .platdata_auto_alloc_size = sizeof(struct mipi_dsi_panel_plat),
- .priv_auto_alloc_size = sizeof(struct otm8009a_panel_priv),
- };
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