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kernel_samsung_a34x-permissive/drivers/gpu/drm/panel/panel-truly-ili9881h-rt4801-vdo.c

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Import A346BXXU1AWB9 kernel source Android 13
2024-04-28 06:49:01 -07:00
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2019 MediaTek Inc.
*/
#include <drm/drmP.h>
#include <drm/drm_mipi_dsi.h>
#include <drm/drm_panel.h>
#include <linux/backlight.h>
#include <linux/gpio/consumer.h>
#include <linux/regulator/consumer.h>
#include <video/mipi_display.h>
#include <video/of_videomode.h>
#include <video/videomode.h>
#include <linux/module.h>
#include <linux/of_platform.h>
#include <linux/of_graph.h>
#include <linux/platform_device.h>
#define CONFIG_MTK_PANEL_EXT
#if defined(CONFIG_MTK_PANEL_EXT)
#include "../mediatek/mtk_drm_graphics_base.h"
#include "../mediatek/mtk_log.h"
#include "../mediatek/mtk_panel_ext.h"
#endif
#ifdef CONFIG_MTK_ROUND_CORNER_SUPPORT
#include "../mediatek/mtk_corner_pattern/mtk_data_hw_roundedpattern.h"
#endif
struct lcm {
struct device *dev;
struct drm_panel panel;
struct backlight_device *backlight;
struct gpio_desc *reset_gpio;
struct gpio_desc *bias_pos, *bias_neg;
bool prepared;
bool enabled;
int error;
};
#define lcm_dcs_write_seq(ctx, seq...) \
({ \
const u8 d[] = {seq}; \
BUILD_BUG_ON_MSG(ARRAY_SIZE(d) > 64, \
"DCS sequence too big for stack"); \
lcm_dcs_write(ctx, d, ARRAY_SIZE(d)); \
})
#define lcm_dcs_write_seq_static(ctx, seq...) \
({ \
static const u8 d[] = {seq}; \
lcm_dcs_write(ctx, d, ARRAY_SIZE(d)); \
})
static inline struct lcm *panel_to_lcm(struct drm_panel *panel)
{
return container_of(panel, struct lcm, panel);
}
static void lcm_dcs_write(struct lcm *ctx, const void *data, size_t len)
{
struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
ssize_t ret;
char *addr;
if (ctx->error < 0)
return;
addr = (char *)data;
if ((int)*addr < 0xB0)
ret = mipi_dsi_dcs_write_buffer(dsi, data, len);
else
ret = mipi_dsi_generic_write(dsi, data, len);
if (ret < 0) {
dev_err(ctx->dev, "error %zd writing seq: %ph\n", ret, data);
ctx->error = ret;
}
}
#ifdef PANEL_SUPPORT_READBACK
static int lcm_dcs_read(struct lcm *ctx, u8 cmd, void *data, size_t len)
{
struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
ssize_t ret;
if (ctx->error < 0)
return 0;
ret = mipi_dsi_dcs_read(dsi, cmd, data, len);
if (ret < 0) {
dev_err(ctx->dev, "error %d reading dcs seq:(%#x)\n", ret, cmd);
ctx->error = ret;
}
return ret;
}
static void lcm_panel_get_data(struct lcm *ctx)
{
u8 buffer[3] = {0};
static int ret;
if (ret == 0) {
ret = lcm_dcs_read(ctx, 0x0A, buffer, 1);
dev_info(ctx->dev, "return %d data(0x%08x) to dsi engine\n",
ret, buffer[0] | (buffer[1] << 8));
}
}
#endif
#if defined(CONFIG_RT5081_PMU_DSV) || defined(CONFIG_MT6370_PMU_DSV)
static struct regulator *disp_bias_pos;
static struct regulator *disp_bias_neg;
static int lcm_panel_bias_regulator_init(void)
{
static int regulator_inited;
int ret = 0;
if (regulator_inited)
return ret;
/* please only get regulator once in a driver */
disp_bias_pos = regulator_get(NULL, "dsv_pos");
if (IS_ERR(disp_bias_pos)) { /* handle return value */
ret = PTR_ERR(disp_bias_pos);
pr_err("get dsv_pos fail, error: %d\n", ret);
return ret;
}
disp_bias_neg = regulator_get(NULL, "dsv_neg");
if (IS_ERR(disp_bias_neg)) { /* handle return value */
ret = PTR_ERR(disp_bias_neg);
pr_err("get dsv_neg fail, error: %d\n", ret);
return ret;
}
regulator_inited = 1;
return ret; /* must be 0 */
}
static int lcm_panel_bias_enable(void)
{
int ret = 0;
int retval = 0;
lcm_panel_bias_regulator_init();
/* set voltage with min & max*/
ret = regulator_set_voltage(disp_bias_pos, 5400000, 5400000);
if (ret < 0)
pr_err("set voltage disp_bias_pos fail, ret = %d\n", ret);
retval |= ret;
ret = regulator_set_voltage(disp_bias_neg, 5400000, 5400000);
if (ret < 0)
pr_err("set voltage disp_bias_neg fail, ret = %d\n", ret);
retval |= ret;
/* enable regulator */
ret = regulator_enable(disp_bias_pos);
if (ret < 0)
pr_err("enable regulator disp_bias_pos fail, ret = %d\n", ret);
retval |= ret;
ret = regulator_enable(disp_bias_neg);
if (ret < 0)
pr_err("enable regulator disp_bias_neg fail, ret = %d\n", ret);
retval |= ret;
return retval;
}
static int lcm_panel_bias_disable(void)
{
int ret = 0;
int retval = 0;
lcm_panel_bias_regulator_init();
ret = regulator_disable(disp_bias_neg);
if (ret < 0)
pr_err("disable regulator disp_bias_neg fail, ret = %d\n", ret);
retval |= ret;
ret = regulator_disable(disp_bias_pos);
if (ret < 0)
pr_err("disable regulator disp_bias_pos fail, ret = %d\n", ret);
retval |= ret;
return retval;
}
#endif
static void lcm_panel_init(struct lcm *ctx)
{
ctx->reset_gpio =
devm_gpiod_get(ctx->dev, "reset", GPIOD_OUT_HIGH);
if (IS_ERR(ctx->reset_gpio)) {
dev_err(ctx->dev, "%s: cannot get reset_gpio %ld\n",
__func__, PTR_ERR(ctx->reset_gpio));
return;
}
gpiod_set_value(ctx->reset_gpio, 0);
udelay(15 * 1000);
gpiod_set_value(ctx->reset_gpio, 1);
udelay(1 * 1000);
gpiod_set_value(ctx->reset_gpio, 0);
udelay(10 * 1000);
gpiod_set_value(ctx->reset_gpio, 1);
udelay(10 * 1000);
devm_gpiod_put(ctx->dev, ctx->reset_gpio);
lcm_dcs_write_seq_static(ctx, 0xFF, 0x98, 0x81, 0x01);
lcm_dcs_write_seq_static(ctx, 0x00, 0x48);
lcm_dcs_write_seq_static(ctx, 0x01, 0x34);
lcm_dcs_write_seq_static(ctx, 0x02, 0x35);
lcm_dcs_write_seq_static(ctx, 0x03, 0x5E);
lcm_dcs_write_seq_static(ctx, 0x08, 0x86);
lcm_dcs_write_seq_static(ctx, 0x09, 0x01);
lcm_dcs_write_seq_static(ctx, 0x0a, 0x73);
lcm_dcs_write_seq_static(ctx, 0x0b, 0x00);
lcm_dcs_write_seq_static(ctx, 0x0c, 0x35);
lcm_dcs_write_seq_static(ctx, 0x0d, 0x35);
lcm_dcs_write_seq_static(ctx, 0x0e, 0x05);
lcm_dcs_write_seq_static(ctx, 0x0f, 0x05);
lcm_dcs_write_seq_static(ctx, 0x28, 0x48);
lcm_dcs_write_seq_static(ctx, 0x29, 0x86);
lcm_dcs_write_seq_static(ctx, 0x2A, 0x48);
lcm_dcs_write_seq_static(ctx, 0x2B, 0x86);
lcm_dcs_write_seq_static(ctx, 0x31, 0x07);
lcm_dcs_write_seq_static(ctx, 0x32, 0x23);
lcm_dcs_write_seq_static(ctx, 0x33, 0x00);
lcm_dcs_write_seq_static(ctx, 0x34, 0x0B);
lcm_dcs_write_seq_static(ctx, 0x35, 0x09);
lcm_dcs_write_seq_static(ctx, 0x36, 0x02);
lcm_dcs_write_seq_static(ctx, 0x37, 0x15);
lcm_dcs_write_seq_static(ctx, 0x38, 0x17);
lcm_dcs_write_seq_static(ctx, 0x39, 0x11);
lcm_dcs_write_seq_static(ctx, 0x3A, 0x13);
lcm_dcs_write_seq_static(ctx, 0x3B, 0x22);
lcm_dcs_write_seq_static(ctx, 0x3C, 0x01);
lcm_dcs_write_seq_static(ctx, 0x3D, 0x07);
lcm_dcs_write_seq_static(ctx, 0x3E, 0x07);
lcm_dcs_write_seq_static(ctx, 0x3F, 0x07);
lcm_dcs_write_seq_static(ctx, 0x40, 0x07);
lcm_dcs_write_seq_static(ctx, 0x41, 0x07);
lcm_dcs_write_seq_static(ctx, 0x42, 0x07);
lcm_dcs_write_seq_static(ctx, 0x43, 0x07);
lcm_dcs_write_seq_static(ctx, 0x44, 0x07);
lcm_dcs_write_seq_static(ctx, 0x45, 0x07);
lcm_dcs_write_seq_static(ctx, 0x46, 0x07);
lcm_dcs_write_seq_static(ctx, 0x47, 0x07);
lcm_dcs_write_seq_static(ctx, 0x48, 0x23);
lcm_dcs_write_seq_static(ctx, 0x49, 0x00);
lcm_dcs_write_seq_static(ctx, 0x4A, 0x0A);
lcm_dcs_write_seq_static(ctx, 0x4B, 0x08);
lcm_dcs_write_seq_static(ctx, 0x4C, 0x02);
lcm_dcs_write_seq_static(ctx, 0x4D, 0x14);
lcm_dcs_write_seq_static(ctx, 0x4E, 0x16);
lcm_dcs_write_seq_static(ctx, 0x4F, 0x10);
lcm_dcs_write_seq_static(ctx, 0x50, 0x12);
lcm_dcs_write_seq_static(ctx, 0x51, 0x22);
lcm_dcs_write_seq_static(ctx, 0x52, 0x01);
lcm_dcs_write_seq_static(ctx, 0x53, 0x07);
lcm_dcs_write_seq_static(ctx, 0x54, 0x07);
lcm_dcs_write_seq_static(ctx, 0x55, 0x07);
lcm_dcs_write_seq_static(ctx, 0x56, 0x07);
lcm_dcs_write_seq_static(ctx, 0x57, 0x07);
lcm_dcs_write_seq_static(ctx, 0x58, 0x07);
lcm_dcs_write_seq_static(ctx, 0x59, 0x07);
lcm_dcs_write_seq_static(ctx, 0x5a, 0x07);
lcm_dcs_write_seq_static(ctx, 0x5b, 0x07);
lcm_dcs_write_seq_static(ctx, 0x5c, 0x07);
lcm_dcs_write_seq_static(ctx, 0x61, 0x07);
lcm_dcs_write_seq_static(ctx, 0x62, 0x23);
lcm_dcs_write_seq_static(ctx, 0x63, 0x00);
lcm_dcs_write_seq_static(ctx, 0x64, 0x08);
lcm_dcs_write_seq_static(ctx, 0x65, 0x0A);
lcm_dcs_write_seq_static(ctx, 0x66, 0x02);
lcm_dcs_write_seq_static(ctx, 0x67, 0x12);
lcm_dcs_write_seq_static(ctx, 0x68, 0x10);
lcm_dcs_write_seq_static(ctx, 0x69, 0x16);
lcm_dcs_write_seq_static(ctx, 0x6a, 0x14);
lcm_dcs_write_seq_static(ctx, 0x6b, 0x22);
lcm_dcs_write_seq_static(ctx, 0x6c, 0x01);
lcm_dcs_write_seq_static(ctx, 0x6d, 0x07);
lcm_dcs_write_seq_static(ctx, 0x6e, 0x07);
lcm_dcs_write_seq_static(ctx, 0x6f, 0x07);
lcm_dcs_write_seq_static(ctx, 0x70, 0x07);
lcm_dcs_write_seq_static(ctx, 0x71, 0x07);
lcm_dcs_write_seq_static(ctx, 0x72, 0x07);
lcm_dcs_write_seq_static(ctx, 0x73, 0x07);
lcm_dcs_write_seq_static(ctx, 0x74, 0x07);
lcm_dcs_write_seq_static(ctx, 0x75, 0x07);
lcm_dcs_write_seq_static(ctx, 0x76, 0x07);
lcm_dcs_write_seq_static(ctx, 0x77, 0x07);
lcm_dcs_write_seq_static(ctx, 0x78, 0x23);
lcm_dcs_write_seq_static(ctx, 0x79, 0x00);
lcm_dcs_write_seq_static(ctx, 0x7a, 0x09);
lcm_dcs_write_seq_static(ctx, 0x7b, 0x0B);
lcm_dcs_write_seq_static(ctx, 0x7c, 0x02);
lcm_dcs_write_seq_static(ctx, 0x7d, 0x13);
lcm_dcs_write_seq_static(ctx, 0x7e, 0x11);
lcm_dcs_write_seq_static(ctx, 0x7f, 0x17);
lcm_dcs_write_seq_static(ctx, 0x80, 0x15);
lcm_dcs_write_seq_static(ctx, 0x81, 0x22);
lcm_dcs_write_seq_static(ctx, 0x82, 0x01);
lcm_dcs_write_seq_static(ctx, 0x83, 0x07);
lcm_dcs_write_seq_static(ctx, 0x84, 0x07);
lcm_dcs_write_seq_static(ctx, 0x85, 0x07);
lcm_dcs_write_seq_static(ctx, 0x86, 0x07);
lcm_dcs_write_seq_static(ctx, 0x87, 0x07);
lcm_dcs_write_seq_static(ctx, 0x88, 0x07);
lcm_dcs_write_seq_static(ctx, 0x89, 0x07);
lcm_dcs_write_seq_static(ctx, 0x8a, 0x07);
lcm_dcs_write_seq_static(ctx, 0x8b, 0x07);
lcm_dcs_write_seq_static(ctx, 0x8c, 0x07);
lcm_dcs_write_seq_static(ctx, 0xd0, 0x01);
lcm_dcs_write_seq_static(ctx, 0xd1, 0x00);
lcm_dcs_write_seq_static(ctx, 0xe2, 0x00);
lcm_dcs_write_seq_static(ctx, 0xe6, 0x22);
lcm_dcs_write_seq_static(ctx, 0xe7, 0x54);
lcm_dcs_write_seq_static(ctx, 0xB0, 0x33);
lcm_dcs_write_seq_static(ctx, 0xB1, 0x33);
lcm_dcs_write_seq_static(ctx, 0xB2, 0x00);
lcm_dcs_write_seq_static(ctx, 0xE7, 0x54);
lcm_dcs_write_seq_static(ctx, 0xFF, 0x98, 0x81, 0x02);
lcm_dcs_write_seq_static(ctx, 0x40, 0x52);
lcm_dcs_write_seq_static(ctx, 0x4B, 0x5A);
lcm_dcs_write_seq_static(ctx, 0x4D, 0x4E);
lcm_dcs_write_seq_static(ctx, 0x1A, 0x48);
lcm_dcs_write_seq_static(ctx, 0x4E, 0x00);
lcm_dcs_write_seq_static(ctx, 0x1A, 0x48);
lcm_dcs_write_seq_static(ctx, 0x70, 0x34);
lcm_dcs_write_seq_static(ctx, 0x73, 0x0A);
lcm_dcs_write_seq_static(ctx, 0x79, 0x06);
lcm_dcs_write_seq_static(ctx, 0xFF, 0x98, 0x81, 0x05);
lcm_dcs_write_seq_static(ctx, 0x03, 0x01);
lcm_dcs_write_seq_static(ctx, 0x04, 0x43);
lcm_dcs_write_seq_static(ctx, 0x58, 0x63);
lcm_dcs_write_seq_static(ctx, 0x63, 0x88);
lcm_dcs_write_seq_static(ctx, 0x64, 0x88);
lcm_dcs_write_seq_static(ctx, 0x68, 0x65);
lcm_dcs_write_seq_static(ctx, 0x69, 0x7F);
lcm_dcs_write_seq_static(ctx, 0x6A, 0xC9);
lcm_dcs_write_seq_static(ctx, 0x6B, 0xCF);
lcm_dcs_write_seq_static(ctx, 0xFF, 0x98, 0x81, 0x06);
lcm_dcs_write_seq_static(ctx, 0x11, 0x03);
lcm_dcs_write_seq_static(ctx, 0x13, 0x15);
lcm_dcs_write_seq_static(ctx, 0x14, 0x41);
lcm_dcs_write_seq_static(ctx, 0x15, 0xc2);
lcm_dcs_write_seq_static(ctx, 0x16, 0x40);
lcm_dcs_write_seq_static(ctx, 0x17, 0x48);
lcm_dcs_write_seq_static(ctx, 0x18, 0x3B);
lcm_dcs_write_seq_static(ctx, 0xD6, 0x85);
lcm_dcs_write_seq_static(ctx, 0x27, 0x20);
lcm_dcs_write_seq_static(ctx, 0x28, 0x20);
lcm_dcs_write_seq_static(ctx, 0x2E, 0x01);
lcm_dcs_write_seq_static(ctx, 0xC0, 0xF7);
lcm_dcs_write_seq_static(ctx, 0xC1, 0x02);
lcm_dcs_write_seq_static(ctx, 0xC2, 0x04);
lcm_dcs_write_seq_static(ctx, 0x48, 0x0F);
lcm_dcs_write_seq_static(ctx, 0x4D, 0x80);
lcm_dcs_write_seq_static(ctx, 0x4E, 0x40);
lcm_dcs_write_seq_static(ctx, 0x7C, 0x40);
lcm_dcs_write_seq_static(ctx, 0x94, 0x00);
lcm_dcs_write_seq_static(ctx, 0xFF, 0x98, 0x81, 0x07);
lcm_dcs_write_seq_static(ctx, 0x0F, 0x02);
lcm_dcs_write_seq_static(ctx, 0xFF, 0x98, 0x81, 0x08);
lcm_dcs_write_seq_static(ctx, 0xE0, 0x00, 0x24, 0x3C, 0x51, 0x74, 0x40,
0x97, 0xB6, 0xDE, 0x03, 0x55, 0x42, 0x7A,
0xAF, 0xE4, 0xAA, 0x1B, 0x5E, 0x88, 0xBB,
0xFE, 0xE6, 0x1C, 0x5E, 0x93, 0x03, 0xEC);
lcm_dcs_write_seq_static(ctx, 0xE1, 0x00, 0x24, 0x3C, 0x51, 0x74, 0x40,
0x97, 0xB6, 0xDE, 0x03, 0x55, 0x42, 0x7A,
0xAF, 0xE4, 0xAA, 0x1B, 0x5E, 0x88, 0xBB,
0xFE, 0xE6, 0x1C, 0x5E, 0x93, 0x03, 0xEC);
lcm_dcs_write_seq_static(ctx, 0xFF, 0x98, 0x81, 0x0E);
lcm_dcs_write_seq_static(ctx, 0x00, 0xA0);
lcm_dcs_write_seq_static(ctx, 0x13, 0x05);
lcm_dcs_write_seq_static(ctx, 0x11, 0x90);
lcm_dcs_write_seq_static(ctx, 0xFF, 0x98, 0x81, 0x06);
lcm_dcs_write_seq_static(ctx, 0xD5, 0x34);
lcm_dcs_write_seq_static(ctx, 0x58, 0xBD);
lcm_dcs_write_seq_static(ctx, 0x94, 0x01);
lcm_dcs_write_seq_static(ctx, 0x13, 0x4A);
lcm_dcs_write_seq_static(ctx, 0x14, 0x2F);
lcm_dcs_write_seq_static(ctx, 0x15, 0x0E);
lcm_dcs_write_seq_static(ctx, 0x16, 0x2F);
lcm_dcs_write_seq_static(ctx, 0xFF, 0x98, 0x81, 0x00);
lcm_dcs_write_seq_static(ctx, 0x11, 0x00);
udelay(120);
lcm_dcs_write_seq_static(ctx, 0xFF, 0x98, 0x81, 0x02);
lcm_dcs_write_seq_static(ctx, 0x47, 0x00);
lcm_dcs_write_seq_static(ctx, 0xFF, 0x98, 0x81, 0x06);
lcm_dcs_write_seq_static(ctx, 0xD5, 0x30);
lcm_dcs_write_seq_static(ctx, 0x58, 0xD5);
lcm_dcs_write_seq_static(ctx, 0x94, 0x01);
lcm_dcs_write_seq_static(ctx, 0x17, 0xFF);
lcm_dcs_write_seq_static(ctx, 0x18, 0x00);
lcm_dcs_write_seq_static(ctx, 0xFF, 0x98, 0x81, 0x00);
lcm_dcs_write_seq_static(ctx, 0x29, 0x00);
udelay(20);
lcm_dcs_write_seq_static(ctx, 0x35, 0x00);
}
static int lcm_disable(struct drm_panel *panel)
{
struct lcm *ctx = panel_to_lcm(panel);
if (!ctx->enabled)
return 0;
if (ctx->backlight) {
ctx->backlight->props.power = FB_BLANK_POWERDOWN;
backlight_update_status(ctx->backlight);
}
ctx->enabled = false;
return 0;
}
static int lcm_unprepare(struct drm_panel *panel)
{
struct lcm *ctx = panel_to_lcm(panel);
if (!ctx->prepared)
return 0;
lcm_dcs_write_seq_static(ctx, 0xFF, 0x98, 0x81, 0x00);
lcm_dcs_write_seq_static(ctx, 0x28);
msleep(50);
lcm_dcs_write_seq_static(ctx, 0x10);
msleep(150);
ctx->error = 0;
ctx->prepared = false;
#if defined(CONFIG_RT5081_PMU_DSV) || defined(CONFIG_MT6370_PMU_DSV)
lcm_panel_bias_disable();
#else
ctx->reset_gpio =
devm_gpiod_get(ctx->dev, "reset", GPIOD_OUT_HIGH);
if (IS_ERR(ctx->reset_gpio)) {
dev_err(ctx->dev, "%s: cannot get reset_gpio %ld\n",
__func__, PTR_ERR(ctx->reset_gpio));
return PTR_ERR(ctx->reset_gpio);
}
gpiod_set_value(ctx->reset_gpio, 0);
devm_gpiod_put(ctx->dev, ctx->reset_gpio);
ctx->bias_neg = devm_gpiod_get_index(ctx->dev,
"bias", 1, GPIOD_OUT_HIGH);
if (IS_ERR(ctx->bias_neg)) {
dev_err(ctx->dev, "%s: cannot get bias_neg %ld\n",
__func__, PTR_ERR(ctx->bias_neg));
return PTR_ERR(ctx->bias_neg);
}
gpiod_set_value(ctx->bias_neg, 0);
devm_gpiod_put(ctx->dev, ctx->bias_neg);
udelay(1000);
ctx->bias_pos = devm_gpiod_get_index(ctx->dev,
"bias", 0, GPIOD_OUT_HIGH);
if (IS_ERR(ctx->bias_pos)) {
dev_err(ctx->dev, "%s: cannot get bias_pos %ld\n",
__func__, PTR_ERR(ctx->bias_pos));
return PTR_ERR(ctx->bias_pos);
}
gpiod_set_value(ctx->bias_pos, 0);
devm_gpiod_put(ctx->dev, ctx->bias_pos);
#endif
return 0;
}
static int lcm_prepare(struct drm_panel *panel)
{
struct lcm *ctx = panel_to_lcm(panel);
int ret;
pr_info("%s\n", __func__);
if (ctx->prepared)
return 0;
#if defined(CONFIG_RT5081_PMU_DSV) || defined(CONFIG_MT6370_PMU_DSV)
lcm_panel_bias_enable();
#else
ctx->bias_pos = devm_gpiod_get_index(ctx->dev,
"bias", 0, GPIOD_OUT_HIGH);
if (IS_ERR(ctx->bias_pos)) {
dev_err(ctx->dev, "%s: cannot get bias_pos %ld\n",
__func__, PTR_ERR(ctx->bias_pos));
return PTR_ERR(ctx->bias_pos);
}
gpiod_set_value(ctx->bias_pos, 1);
devm_gpiod_put(ctx->dev, ctx->bias_pos);
udelay(2000);
ctx->bias_neg = devm_gpiod_get_index(ctx->dev,
"bias", 1, GPIOD_OUT_HIGH);
if (IS_ERR(ctx->bias_neg)) {
dev_err(ctx->dev, "%s: cannot get bias_neg %ld\n",
__func__, PTR_ERR(ctx->bias_neg));
return PTR_ERR(ctx->bias_neg);
}
gpiod_set_value(ctx->bias_neg, 1);
devm_gpiod_put(ctx->dev, ctx->bias_neg);
#endif
lcm_panel_init(ctx);
ret = ctx->error;
if (ret < 0)
lcm_unprepare(panel);
ctx->prepared = true;
#if defined(CONFIG_MTK_PANEL_EXT)
mtk_panel_tch_rst(panel);
#endif
#ifdef PANEL_SUPPORT_READBACK
lcm_panel_get_data(ctx);
#endif
return ret;
}
static int lcm_enable(struct drm_panel *panel)
{
struct lcm *ctx = panel_to_lcm(panel);
if (ctx->enabled)
return 0;
if (ctx->backlight) {
ctx->backlight->props.power = FB_BLANK_UNBLANK;
backlight_update_status(ctx->backlight);
}
ctx->enabled = true;
return 0;
}
#define HFP (36)
#define HSA (8)
#define HBP (10)
#define VFP (1250)
#define VSA (8)
#define VBP (20)
#define VAC (1520)
#define HAC (720)
static struct drm_display_mode default_mode = {
.clock = 129939,
.hdisplay = HAC,
.hsync_start = HAC + HFP,
.hsync_end = HAC + HFP + HSA,
.htotal = HAC + HFP + HSA + HBP,
.vdisplay = VAC,
.vsync_start = VAC + VFP,
.vsync_end = VAC + VFP + VSA,
.vtotal = VAC + VFP + VSA + VBP,
.vrefresh = 60,
};
#if defined(CONFIG_MTK_PANEL_EXT)
static int panel_ext_reset(struct drm_panel *panel, int on)
{
struct lcm *ctx = panel_to_lcm(panel);
ctx->reset_gpio =
devm_gpiod_get(ctx->dev, "reset", GPIOD_OUT_HIGH);
if (IS_ERR(ctx->reset_gpio)) {
dev_err(ctx->dev, "%s: cannot get reset_gpio %ld\n",
__func__, PTR_ERR(ctx->reset_gpio));
return PTR_ERR(ctx->reset_gpio);
}
gpiod_set_value(ctx->reset_gpio, on);
devm_gpiod_put(ctx->dev, ctx->reset_gpio);
return 0;
}
static int panel_ata_check(struct drm_panel *panel)
{
return 0;
}
static int lcm_setbacklight_cmdq(void *dsi, dcs_write_gce cb, void *handle,
unsigned int level)
{
char bl_tb0[] = {0x51, 0xFF};
bl_tb0[1] = level;
if (!cb)
return -1;
cb(dsi, handle, bl_tb0, ARRAY_SIZE(bl_tb0));
return 0;
}
static int lcm_get_virtual_heigh(void)
{
return VAC;
}
static int lcm_get_virtual_width(void)
{
return HAC;
}
static struct mtk_panel_params ext_params = {
.pll_clk = 424,
.vfp_low_power = 1250,
.cust_esd_check = 0,
.esd_check_enable = 0,
.lcm_esd_check_table[0] = {
.cmd = 0x0a,
.count = 1,
.para_list[0] = 0x9c,
},
};
static struct mtk_panel_funcs ext_funcs = {
.reset = panel_ext_reset,
.set_backlight_cmdq = lcm_setbacklight_cmdq,
.ata_check = panel_ata_check,
.get_virtual_heigh = lcm_get_virtual_heigh,
.get_virtual_width = lcm_get_virtual_width,
};
#endif
struct panel_desc {
const struct drm_display_mode *modes;
unsigned int num_modes;
unsigned int bpc;
struct {
unsigned int width;
unsigned int height;
} size;
struct {
unsigned int prepare;
unsigned int enable;
unsigned int disable;
unsigned int unprepare;
} delay;
};
static int lcm_get_modes(struct drm_panel *panel)
{
struct drm_display_mode *mode;
mode = drm_mode_duplicate(panel->drm, &default_mode);
if (!mode) {
dev_err(panel->drm->dev, "failed to add mode %ux%ux@%u\n",
default_mode.hdisplay, default_mode.vdisplay,
default_mode.vrefresh);
return -ENOMEM;
}
drm_mode_set_name(mode);
mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
drm_mode_probed_add(panel->connector, mode);
panel->connector->display_info.width_mm = 65;
panel->connector->display_info.height_mm = 129;
return 1;
}
static const struct drm_panel_funcs lcm_drm_funcs = {
.disable = lcm_disable,
.unprepare = lcm_unprepare,
.prepare = lcm_prepare,
.enable = lcm_enable,
.get_modes = lcm_get_modes,
};
static int lcm_probe(struct mipi_dsi_device *dsi)
{
struct device *dev = &dsi->dev;
struct lcm *ctx;
struct device_node *backlight;
int ret;
struct device_node *dsi_node, *remote_node = NULL, *endpoint = NULL;
dsi_node = of_get_parent(dev->of_node);
if (dsi_node) {
endpoint = of_graph_get_next_endpoint(dsi_node, NULL);
if (endpoint) {
remote_node = of_graph_get_remote_port_parent(endpoint);
if (!remote_node) {
pr_info("No panel connected,skip probe lcm\n");
return -ENODEV;
}
pr_info("device node name:%s\n", remote_node->name);
}
}
if (remote_node != dev->of_node) {
pr_info("%s+ skip probe due to not current lcm\n", __func__);
return -ENODEV;
}
ctx = devm_kzalloc(dev, sizeof(struct lcm), GFP_KERNEL);
if (!ctx)
return -ENOMEM;
mipi_dsi_set_drvdata(dsi, ctx);
ctx->dev = dev;
dsi->lanes = 4;
dsi->format = MIPI_DSI_FMT_RGB888;
dsi->mode_flags = MIPI_DSI_MODE_VIDEO
| MIPI_DSI_MODE_LPM | MIPI_DSI_MODE_EOT_PACKET
| MIPI_DSI_CLOCK_NON_CONTINUOUS;
backlight = of_parse_phandle(dev->of_node, "backlight", 0);
if (backlight) {
ctx->backlight = of_find_backlight_by_node(backlight);
of_node_put(backlight);
if (!ctx->backlight)
return -EPROBE_DEFER;
}
ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
if (IS_ERR(ctx->reset_gpio)) {
dev_err(dev, "%s: cannot get reset-gpios %ld\n",
__func__, PTR_ERR(ctx->reset_gpio));
return PTR_ERR(ctx->reset_gpio);
}
devm_gpiod_put(dev, ctx->reset_gpio);
ctx->bias_pos = devm_gpiod_get_index(dev, "bias", 0, GPIOD_OUT_HIGH);
if (IS_ERR(ctx->bias_pos)) {
dev_err(dev, "%s: cannot get bias-pos 0 %ld\n",
__func__, PTR_ERR(ctx->bias_pos));
return PTR_ERR(ctx->bias_pos);
}
devm_gpiod_put(dev, ctx->bias_pos);
ctx->bias_neg = devm_gpiod_get_index(dev, "bias", 1, GPIOD_OUT_HIGH);
if (IS_ERR(ctx->bias_neg)) {
dev_err(dev, "%s: cannot get bias-neg 1 %ld\n",
__func__, PTR_ERR(ctx->bias_neg));
return PTR_ERR(ctx->bias_neg);
}
devm_gpiod_put(dev, ctx->bias_neg);
ctx->prepared = true;
ctx->enabled = true;
drm_panel_init(&ctx->panel);
ctx->panel.dev = dev;
ctx->panel.funcs = &lcm_drm_funcs;
ret = drm_panel_add(&ctx->panel);
if (ret < 0)
return ret;
ret = mipi_dsi_attach(dsi);
if (ret < 0)
drm_panel_remove(&ctx->panel);
#if defined(CONFIG_MTK_PANEL_EXT)
mtk_panel_tch_handle_reg(&ctx->panel);
ret = mtk_panel_ext_create(dev, &ext_params, &ext_funcs, &ctx->panel);
if (ret < 0)
return ret;
#endif
pr_info("%s-\n", __func__);
return ret;
}
static int lcm_remove(struct mipi_dsi_device *dsi)
{
struct lcm *ctx = mipi_dsi_get_drvdata(dsi);
mipi_dsi_detach(dsi);
drm_panel_remove(&ctx->panel);
return 0;
}
static const struct of_device_id lcm_of_match[] = {
{ .compatible = "truly,ili9881h,vdo", },
{ }
};
MODULE_DEVICE_TABLE(of, lcm_of_match);
static struct mipi_dsi_driver lcm_driver = {
.probe = lcm_probe,
.remove = lcm_remove,
.driver = {
.name = "panel-truly-ili9881h-vdo",
.owner = THIS_MODULE,
.of_match_table = lcm_of_match,
},
};
module_mipi_dsi_driver(lcm_driver);
MODULE_AUTHOR("Cui Zhang <cui.zhang@mediatek.com>");
MODULE_DESCRIPTION("truly ili9881h VDO LCD Panel Driver");
MODULE_LICENSE("GPL v2");
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