// SPDX-License-Identifier: GPL-2.0+
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/*
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* Rohm BU18RL82-based panel driver
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*
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* (C) Copyright 2022 Rockchip Electronics Co., Ltd
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*/
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#include <config.h>
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#include <common.h>
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#include <backlight.h>
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#include <errno.h>
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#include <malloc.h>
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#include <video.h>
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#include <asm/gpio.h>
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#include <dm/device.h>
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#include <dm/read.h>
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#include <dm/pinctrl.h>
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#include <dm/uclass-id.h>
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#include <linux/media-bus-format.h>
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#include "rockchip_display.h"
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#include "rockchip_panel.h"
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struct bu18rl82;
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struct panel_desc {
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const char *name;
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int (*prepare)(struct bu18rl82 *rl82);
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int (*unprepare)(struct bu18rl82 *rl82);
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int (*enable)(struct bu18rl82 *rl82);
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int (*disable)(struct bu18rl82 *rl82);
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int (*backlight_enable)(struct bu18rl82 *rl82);
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int (*backlight_disable)(struct bu18rl82 *rl82);
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};
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struct bu18rl82 {
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struct udevice *dev;
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struct udevice *backlight;
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const struct panel_desc *desc;
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};
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static void bu18rl82_panel_prepare(struct rockchip_panel *panel)
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{
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struct bu18rl82 *rl82 = dev_get_priv(panel->dev);
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const struct panel_desc *desc = rl82->desc;
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if (desc->prepare)
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desc->prepare(rl82);
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}
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static void bu18rl82_panel_unprepare(struct rockchip_panel *panel)
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{
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struct bu18rl82 *rl82 = dev_get_priv(panel->dev);
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const struct panel_desc *desc = rl82->desc;
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if (desc->unprepare)
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desc->unprepare(rl82);
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}
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static void bu18rl82_panel_enable(struct rockchip_panel *panel)
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{
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struct bu18rl82 *rl82 = dev_get_priv(panel->dev);
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const struct panel_desc *desc = rl82->desc;
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if (desc->enable)
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desc->enable(rl82);
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if (rl82->backlight)
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backlight_enable(rl82->backlight);
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if (desc->backlight_enable)
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desc->backlight_enable(rl82);
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}
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static void bu18rl82_panel_disable(struct rockchip_panel *panel)
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{
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struct bu18rl82 *rl82 = dev_get_priv(panel->dev);
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const struct panel_desc *desc = rl82->desc;
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if (desc->backlight_disable)
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desc->backlight_disable(rl82);
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if (rl82->backlight)
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backlight_disable(rl82->backlight);
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if (desc->disable)
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desc->disable(rl82);
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}
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static const struct rockchip_panel_funcs bu18rl82_panel_funcs = {
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.prepare = bu18rl82_panel_prepare,
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.unprepare = bu18rl82_panel_unprepare,
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.enable = bu18rl82_panel_enable,
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.disable = bu18rl82_panel_disable,
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};
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static int bu18rl82_probe(struct udevice *dev)
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{
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struct bu18rl82 *rl82 = dev_get_priv(dev);
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struct rockchip_panel *panel;
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int ret;
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ret = i2c_set_chip_offset_len(dev, 2);
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if (ret)
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return ret;
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rl82->dev = dev;
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rl82->desc = (const struct panel_desc *)dev_get_driver_data(dev);
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ret = uclass_get_device_by_phandle(UCLASS_PANEL_BACKLIGHT, dev,
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"backlight", &rl82->backlight);
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if (ret && ret != -ENOENT) {
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dev_err(dev, "%s: Cannot get backlight: %d\n", __func__, ret);
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return ret;
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}
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panel = calloc(1, sizeof(*panel));
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if (!panel)
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return -ENOMEM;
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dev->driver_data = (ulong)panel;
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panel->dev = dev;
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panel->bus_format = MEDIA_BUS_FMT_RGB888_1X24;
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panel->funcs = &bu18rl82_panel_funcs;
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return 0;
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}
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#define rohm_deserializer_write(rl82, reg, val) do { \
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int ret; \
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ret = dm_i2c_reg_write(rl82->dev, reg, val); \
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if (ret) { \
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dev_err(rl82->dev, \
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"failed to set register 0x%04x\n", \
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reg); \
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return ret; \
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} \
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} while (0)
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static int csot_mg1561b01_prepare(struct bu18rl82 *rl82)
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{
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const struct reg_sequence {
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u16 reg;
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u8 def;
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} regs[] = {
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{ 0x0011, 0x03 }, { 0x0012, 0x03 },
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{ 0x001f, 0x02 }, { 0x0020, 0x02 },
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{ 0x0031, 0x41 }, { 0x0032, 0x41 },
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{ 0x0073, 0x80 }, { 0x0074, 0x07 },
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{ 0x007b, 0x38 }, { 0x007c, 0x04 },
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{ 0x0079, 0x0a },
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{ 0x0429, 0x0a }, { 0x045d, 0x01 },
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{ 0x0529, 0x0a }, { 0x055d, 0x01 },
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{ 0x060a, 0xb0 }, { 0x060b, 0xff }, { 0x060c, 0xff },
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{ 0x0644, 0x18 }, { 0x0645, 0x01 }, { 0x0646, 0x2d },
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};
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int i;
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for (i = 0; i < ARRAY_SIZE(regs); i++)
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rohm_deserializer_write(rl82, regs[i].reg, regs[i].def);
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/* BL_PWM - GPIO0 */
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rohm_deserializer_write(rl82, 0x0057, 0x00);
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rohm_deserializer_write(rl82, 0x0058, 0x02);
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/* TP_INT - GPIO3 */
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rohm_deserializer_write(rl82, 0x0060, 0x08);
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rohm_deserializer_write(rl82, 0x042e, 0x05);
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/* TP_RST - GPIO4 */
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rohm_deserializer_write(rl82, 0x0063, 0x00);
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rohm_deserializer_write(rl82, 0x0064, 0x01);
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return 0;
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}
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static int csot_mg1561b01_unprepare(struct bu18rl82 *rl82)
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{
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/* TP_RST - GPIO4 */
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rohm_deserializer_write(rl82, 0x0064, 0x00);
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return 0;
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}
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static int csot_mg1561b01_enable(struct bu18rl82 *rl82)
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{
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rohm_deserializer_write(rl82, 0x0091, 0x03);
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rohm_deserializer_write(rl82, 0x0090, 0x01);
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return 0;
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}
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static int csot_mg1561b01_disable(struct bu18rl82 *rl82)
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{
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rohm_deserializer_write(rl82, 0x0090, 0x00);
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rohm_deserializer_write(rl82, 0x0091, 0x00);
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return 0;
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}
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static int csot_mg1561b01_backlight_enable(struct bu18rl82 *rl82)
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{
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/* BL_EN - GPIO1 */
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rohm_deserializer_write(rl82, 0x005a, 0x00);
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rohm_deserializer_write(rl82, 0x005b, 0x01);
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return 0;
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}
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static int csot_mg1561b01_backlight_disable(struct bu18rl82 *rl82)
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{
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/* BL_EN - GPIO1 */
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rohm_deserializer_write(rl82, 0x005b, 0x00);
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return 0;
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}
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static const struct panel_desc csot_mg1561b01 = {
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.name = "csot,mg1561b01",
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.prepare = csot_mg1561b01_prepare,
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.unprepare = csot_mg1561b01_unprepare,
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.enable = csot_mg1561b01_enable,
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.disable = csot_mg1561b01_disable,
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.backlight_enable = csot_mg1561b01_backlight_enable,
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.backlight_disable = csot_mg1561b01_backlight_disable,
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};
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static int touch_china_v123awf3_r1_prepare(struct bu18rl82 *rl82)
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{
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const struct reg_sequence {
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u16 reg;
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u8 def;
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} regs[] = {
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{ 0x0011, 0x03 }, { 0x0012, 0x03 },
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{ 0x001f, 0x02 }, { 0x0020, 0x02 },
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{ 0x0031, 0x48 }, { 0x0032, 0x48 },
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{ 0x0073, 0x80 }, { 0x0074, 0x07 },
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{ 0x007b, 0xd0 }, { 0x007c, 0x02 },
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{ 0x0079, 0x0a },
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{ 0x0429, 0x0a }, { 0x045d, 0x01 },
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{ 0x0529, 0x0a }, { 0x055d, 0x01 },
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{ 0x060a, 0xb0 }, { 0x060b, 0xff }, { 0x060c, 0xff },
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{ 0x0644, 0x90 }, { 0x0646, 0xd2 },
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};
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int i;
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for (i = 0; i < ARRAY_SIZE(regs); i++)
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rohm_deserializer_write(rl82, regs[i].reg, regs[i].def);
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/* TP_INT - GPIO4 */
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rohm_deserializer_write(rl82, 0x0063, 0x08);
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rohm_deserializer_write(rl82, 0x042f, 0x06);
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/* TP_RST - GPIO3 */
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rohm_deserializer_write(rl82, 0x0060, 0x00);
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rohm_deserializer_write(rl82, 0x0061, 0x00);
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/* LCD_BIAS_EN - GPIO2 */
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rohm_deserializer_write(rl82, 0x005d, 0x00);
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rohm_deserializer_write(rl82, 0x005e, 0x01);
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mdelay(6);
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return 0;
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}
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static int touch_china_v123awf3_r1_unprepare(struct bu18rl82 *rl82)
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{
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/* LCD_BIAS_EN - GPIO2 */
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rohm_deserializer_write(rl82, 0x005e, 0x00);
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return 0;
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}
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static int touch_china_v123awf3_r1_enable(struct bu18rl82 *rl82)
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{
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rohm_deserializer_write(rl82, 0x0091, 0x03);
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rohm_deserializer_write(rl82, 0x0090, 0x01);
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/* RSEX - GPIO5 */
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rohm_deserializer_write(rl82, 0x0066, 0x00);
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rohm_deserializer_write(rl82, 0x0067, 0x01);
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/* TP_RST - GPIO3 */
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rohm_deserializer_write(rl82, 0x0060, 0x00);
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rohm_deserializer_write(rl82, 0x0061, 0x01);
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mdelay(20);
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/* LCD_PON - GPIO1 */
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rohm_deserializer_write(rl82, 0x005a, 0x00);
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rohm_deserializer_write(rl82, 0x005b, 0x01);
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return 0;
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}
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static int touch_china_v123awf3_r1_disable(struct bu18rl82 *rl82)
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{
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rohm_deserializer_write(rl82, 0x0090, 0x00);
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rohm_deserializer_write(rl82, 0x0091, 0x00);
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/* LCD_PON - GPIO1 */
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rohm_deserializer_write(rl82, 0x005b, 0x00);
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mdelay(100);
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/* TP_RST - GPIO3 */
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rohm_deserializer_write(rl82, 0x0061, 0x00);
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/* RSEX - GPIO5 */
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rohm_deserializer_write(rl82, 0x0067, 0x00);
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return 0;
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}
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static int touch_china_v123awf3_r1_backlight_enable(struct bu18rl82 *rl82)
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{
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/* BL_PWM - GPIO0 */
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rohm_deserializer_write(rl82, 0x0057, 0x00);
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rohm_deserializer_write(rl82, 0x0058, 0x02);
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return 0;
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}
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static int touch_china_v123awf3_r1_backlight_disable(struct bu18rl82 *rl82)
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{
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/* BL_PWM - GPIO0 */
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rohm_deserializer_write(rl82, 0x0058, 0x00);
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return 0;
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}
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static const struct panel_desc touch_china_v123awf3_r1 = {
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.name = "touch-china,v123awf3-r1",
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.prepare = touch_china_v123awf3_r1_prepare,
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.unprepare = touch_china_v123awf3_r1_unprepare,
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.enable = touch_china_v123awf3_r1_enable,
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.disable = touch_china_v123awf3_r1_disable,
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.backlight_enable = touch_china_v123awf3_r1_backlight_enable,
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.backlight_disable = touch_china_v123awf3_r1_backlight_disable,
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};
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static const struct udevice_id bu18rl82_of_match[] = {
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{ .compatible = "csot,mg1561b01", .data = (ulong)&csot_mg1561b01 },
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{ .compatible = "touch-china,v123awf3-r1", .data = (ulong)&touch_china_v123awf3_r1 },
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{}
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};
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U_BOOT_DRIVER(panel_rohm_bu18rl82) = {
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.name = "panel-rohm-bu18rl82",
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.id = UCLASS_PANEL,
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.of_match = bu18rl82_of_match,
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.probe = bu18rl82_probe,
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.priv_auto_alloc_size = sizeof(struct bu18rl82),
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};
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