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kernel_samsung_a34x-permissive/drivers/gpu/drm/panel/panel-sc-nt36672c-vdo-90hz.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 <linux/backlight.h>
#include <drm/drmP.h>
#include <drm/drm_mipi_dsi.h>
#include <drm/drm_panel.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_panel_ext.h"
#include "../mediatek/mtk_log.h"
#include "../mediatek/mtk_drm_graphics_base.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;
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_info(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_info(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);
dev_info("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);
dev_info("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)
dev_info("set voltage disp_bias_pos fail, ret = %d\n", ret);
retval |= ret;
ret = regulator_set_voltage(disp_bias_neg, 5400000, 5400000);
if (ret < 0)
dev_info("set voltage disp_bias_neg fail, ret = %d\n", ret);
retval |= ret;
/* enable regulator */
ret = regulator_enable(disp_bias_pos);
if (ret < 0)
dev_info("enable regulator disp_bias_pos fail, ret = %d\n",
ret);
retval |= ret;
ret = regulator_enable(disp_bias_neg);
if (ret < 0)
dev_info("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)
dev_info("disable regulator disp_bias_neg fail, ret = %d\n",
ret);
retval |= ret;
ret = regulator_disable(disp_bias_pos);
if (ret < 0)
dev_info("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_info(ctx->dev, "%s: cannot get reset-gpios %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(10 * 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, 0X10);
lcm_dcs_write_seq_static(ctx, 0xFB, 0x01);
//DSC ON && set PPS
lcm_dcs_write_seq_static(ctx, 0xC0, 0x03);
lcm_dcs_write_seq_static(ctx, 0xC1, 0x89, 0x28, 0x00, 0x08, 0x00, 0xAA,
0x02, 0x0E, 0x00, 0x2B, 0x00, 0x07, 0x0D, 0xB7,
0x0C, 0xB7);
lcm_dcs_write_seq_static(ctx, 0xC2, 0x1B, 0XA0);
lcm_dcs_write_seq_static(ctx, 0xFF, 0X20);
lcm_dcs_write_seq_static(ctx, 0xFB, 0x01);
lcm_dcs_write_seq_static(ctx, 0X01, 0X66);
lcm_dcs_write_seq_static(ctx, 0X32, 0X4D);
lcm_dcs_write_seq_static(ctx, 0X69, 0XD1);
lcm_dcs_write_seq_static(ctx, 0XF2, 0X64);
lcm_dcs_write_seq_static(ctx, 0XF4, 0X64);
lcm_dcs_write_seq_static(ctx, 0XF6, 0X64);
lcm_dcs_write_seq_static(ctx, 0XF9, 0X64);
lcm_dcs_write_seq_static(ctx, 0XFF, 0X26);
lcm_dcs_write_seq_static(ctx, 0XFB, 0X01);
lcm_dcs_write_seq_static(ctx, 0X81, 0X0E);
lcm_dcs_write_seq_static(ctx, 0X84, 0X03);
lcm_dcs_write_seq_static(ctx, 0X86, 0X03);
lcm_dcs_write_seq_static(ctx, 0X88, 0X07);
lcm_dcs_write_seq_static(ctx, 0XFF, 0X27);
lcm_dcs_write_seq_static(ctx, 0XFB, 0X01);
lcm_dcs_write_seq_static(ctx, 0XE3, 0X01);
lcm_dcs_write_seq_static(ctx, 0XE4, 0XEC);
lcm_dcs_write_seq_static(ctx, 0XE5, 0X02);
lcm_dcs_write_seq_static(ctx, 0XE6, 0XE3);
lcm_dcs_write_seq_static(ctx, 0XE7, 0X01);
lcm_dcs_write_seq_static(ctx, 0XE8, 0XEC);
lcm_dcs_write_seq_static(ctx, 0XE9, 0X02);
lcm_dcs_write_seq_static(ctx, 0XEA, 0X22);
lcm_dcs_write_seq_static(ctx, 0XEB, 0X03);
lcm_dcs_write_seq_static(ctx, 0XEC, 0X32);
lcm_dcs_write_seq_static(ctx, 0XED, 0X02);
lcm_dcs_write_seq_static(ctx, 0XEE, 0X22);
lcm_dcs_write_seq_static(ctx, 0XFF, 0X2A);
lcm_dcs_write_seq_static(ctx, 0XFB, 0X01);
lcm_dcs_write_seq_static(ctx, 0X0C, 0X04);
lcm_dcs_write_seq_static(ctx, 0X0F, 0X01);
lcm_dcs_write_seq_static(ctx, 0X11, 0XE0);
lcm_dcs_write_seq_static(ctx, 0X15, 0X0E);
lcm_dcs_write_seq_static(ctx, 0X16, 0X78);
lcm_dcs_write_seq_static(ctx, 0X19, 0X0D);
lcm_dcs_write_seq_static(ctx, 0X1A, 0XF4);
lcm_dcs_write_seq_static(ctx, 0X37, 0X6E);
lcm_dcs_write_seq_static(ctx, 0X88, 0X76);
lcm_dcs_write_seq_static(ctx, 0XFF, 0X2C);
lcm_dcs_write_seq_static(ctx, 0XFB, 0X01);
lcm_dcs_write_seq_static(ctx, 0X4D, 0X1E);
lcm_dcs_write_seq_static(ctx, 0X4E, 0X04);
lcm_dcs_write_seq_static(ctx, 0X4F, 0X00);
lcm_dcs_write_seq_static(ctx, 0X9D, 0X1E);
lcm_dcs_write_seq_static(ctx, 0X9E, 0X04);
lcm_dcs_write_seq_static(ctx, 0X9F, 0X17);
lcm_dcs_write_seq_static(ctx, 0XFF, 0XF0);
lcm_dcs_write_seq_static(ctx, 0XFB, 0X01);
lcm_dcs_write_seq_static(ctx, 0X5A, 0X00);
lcm_dcs_write_seq_static(ctx, 0XFF, 0XE0);
lcm_dcs_write_seq_static(ctx, 0XFB, 0X01);
lcm_dcs_write_seq_static(ctx, 0X25, 0X02);
lcm_dcs_write_seq_static(ctx, 0X4E, 0X02);
lcm_dcs_write_seq_static(ctx, 0X85, 0X02);
lcm_dcs_write_seq_static(ctx, 0XFF, 0XD0);
lcm_dcs_write_seq_static(ctx, 0XFB, 0X01);
lcm_dcs_write_seq_static(ctx, 0X09, 0XAD);
lcm_dcs_write_seq_static(ctx, 0XFF, 0X20);
lcm_dcs_write_seq_static(ctx, 0XFB, 0X01);
lcm_dcs_write_seq_static(ctx, 0XF8, 0X64);
lcm_dcs_write_seq_static(ctx, 0XFF, 0X2A);
lcm_dcs_write_seq_static(ctx, 0XFB, 0X01);
lcm_dcs_write_seq_static(ctx, 0X1A, 0XF0);
lcm_dcs_write_seq_static(ctx, 0X30, 0X5E);
lcm_dcs_write_seq_static(ctx, 0X31, 0XCA);
lcm_dcs_write_seq_static(ctx, 0X34, 0XFE);
lcm_dcs_write_seq_static(ctx, 0X35, 0X35);
lcm_dcs_write_seq_static(ctx, 0X36, 0XA2);
lcm_dcs_write_seq_static(ctx, 0X37, 0XF8);
lcm_dcs_write_seq_static(ctx, 0X38, 0X37);
lcm_dcs_write_seq_static(ctx, 0X39, 0XA0);
lcm_dcs_write_seq_static(ctx, 0X3A, 0X5E);
lcm_dcs_write_seq_static(ctx, 0X53, 0XD7);
lcm_dcs_write_seq_static(ctx, 0X88, 0X72);
lcm_dcs_write_seq_static(ctx, 0X88, 0X72);
lcm_dcs_write_seq_static(ctx, 0XFF, 0X24);
lcm_dcs_write_seq_static(ctx, 0XFB, 0X01);
lcm_dcs_write_seq_static(ctx, 0XC6, 0XC0);
lcm_dcs_write_seq_static(ctx, 0XFF, 0XE0);
lcm_dcs_write_seq_static(ctx, 0XFB, 0X01);
lcm_dcs_write_seq_static(ctx, 0X25, 0X00);
lcm_dcs_write_seq_static(ctx, 0X4E, 0X02);
lcm_dcs_write_seq_static(ctx, 0X35, 0X82);
lcm_dcs_write_seq_static(ctx, 0XFF, 0XC0);
lcm_dcs_write_seq_static(ctx, 0XFB, 0X01);
lcm_dcs_write_seq_static(ctx, 0X9C, 0X11);
lcm_dcs_write_seq_static(ctx, 0X9D, 0X11);
//90HZ
lcm_dcs_write_seq_static(ctx, 0XFF, 0X25);
lcm_dcs_write_seq_static(ctx, 0XFB, 0X01);
lcm_dcs_write_seq_static(ctx, 0X18, 0X21);
lcm_dcs_write_seq_static(ctx, 0XFF, 0X10);
lcm_dcs_write_seq_static(ctx, 0XFB, 0X01);
lcm_dcs_write_seq_static(ctx, 0XC0, 0X03);
lcm_dcs_write_seq_static(ctx, 0x51, 0x00);
lcm_dcs_write_seq_static(ctx, 0x35, 0x00);
lcm_dcs_write_seq_static(ctx, 0x53, 0x24);
lcm_dcs_write_seq_static(ctx, 0x55, 0x00);
lcm_dcs_write_seq_static(ctx, 0xFF, 0x10);
lcm_dcs_write_seq_static(ctx, 0x11);
msleep(140);
lcm_dcs_write_seq_static(ctx, 0x29);
msleep(40);
}
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, 0x28);
lcm_dcs_write_seq_static(ctx, 0x10);
msleep(120);
lcm_dcs_write_seq_static(ctx, 0x4F, 0x01);
msleep(120);
ctx->error = 0;
ctx->prepared = false;
#if defined(CONFIG_RT5081_PMU_DSV) || defined(CONFIG_MT6370_PMU_DSV)
lcm_panel_bias_disable();
#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();
#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 VAC (2400)
#define HAC (1080)
static u32 fake_heigh = 2400;
static u32 fake_width = 1080;
static bool need_fake_resolution;
static struct drm_display_mode default_mode = {
.clock = 287240,
.hdisplay = HAC,
.hsync_start = HAC + 165,//HFP
.hsync_end = HAC + 165 + 22,//HSA
.htotal = HAC + 165 + 22 + 22,//HBP1289
.vdisplay = 2400,
.vsync_start = VAC + 1294,//VFP
.vsync_end = VAC + 1294 + 10,//VSA
.vtotal = VAC + 1294 + 10 + 10,//VBP3714
.vrefresh = 60,
};
static struct drm_display_mode performance_mode = {
.clock = 287008,
.hdisplay = HAC,
.hsync_start = HAC + 165,//HFP
.hsync_end = HAC + 165 + 22,//HSA
.htotal = HAC + 165 + 22 + 22,//HBP
.vdisplay = VAC,
.vsync_start = VAC + 54,//VFP
.vsync_end = VAC + 54 + 10,//VSA
.vtotal = VAC + 54 + 10 + 10,//VBP2474
.vrefresh = 90,
};
#if defined(CONFIG_MTK_PANEL_EXT)
static struct mtk_panel_params ext_params = {
.pll_clk = 424,
.vfp_low_power = 2533,//45hz
.cust_esd_check = 0,
.esd_check_enable = 1,
.lcm_esd_check_table[0] = {
.cmd = 0x0A, .count = 1, .para_list[0] = 0x9C,
},
.output_mode = MTK_PANEL_DSC_SINGLE_PORT,
.dsc_params = {
.enable = 1,
.ver = 17,
.slice_mode = 1,
.rgb_swap = 0,
.dsc_cfg = 34,
.rct_on = 1,
.bit_per_channel = 8,
.dsc_line_buf_depth = 9,
.bp_enable = 1,
.bit_per_pixel = 128,
.pic_height = 2400,
.pic_width = 1080,
.slice_height = 8,
.slice_width = 540,
.chunk_size = 540,
.xmit_delay = 170,
.dec_delay = 526,
.scale_value = 32,
.increment_interval = 43,
.decrement_interval = 7,
.line_bpg_offset = 12,
.nfl_bpg_offset = 3511,
.slice_bpg_offset = 3255,
.initial_offset = 6144,
.final_offset = 7072,
.flatness_minqp = 3,
.flatness_maxqp = 12,
.rc_model_size = 8192,
.rc_edge_factor = 6,
.rc_quant_incr_limit0 = 11,
.rc_quant_incr_limit1 = 11,
.rc_tgt_offset_hi = 3,
.rc_tgt_offset_lo = 3,
},
.data_rate = 847,
.dyn_fps = {
.switch_en = 1, .vact_timing_fps = 90,
},
};
static struct mtk_panel_params ext_params_90hz = {
.pll_clk = 424,
.vfp_low_power = 1294,//60hz
.cust_esd_check = 0,
.esd_check_enable = 1,
.lcm_esd_check_table[0] = {
.cmd = 0x0A, .count = 1, .para_list[0] = 0x9C,
},
.output_mode = MTK_PANEL_DSC_SINGLE_PORT,
.dsc_params = {
.enable = 1,
.ver = 17,
.slice_mode = 1,
.rgb_swap = 0,
.dsc_cfg = 34,
.rct_on = 1,
.bit_per_channel = 8,
.dsc_line_buf_depth = 9,
.bp_enable = 1,
.bit_per_pixel = 128,
.pic_height = 2400,
.pic_width = 1080,
.slice_height = 8,
.slice_width = 540,
.chunk_size = 540,
.xmit_delay = 170,
.dec_delay = 526,
.scale_value = 32,
.increment_interval = 43,
.decrement_interval = 7,
.line_bpg_offset = 12,
.nfl_bpg_offset = 3511,
.slice_bpg_offset = 3255,
.initial_offset = 6144,
.final_offset = 7072,
.flatness_minqp = 3,
.flatness_maxqp = 12,
.rc_model_size = 8192,
.rc_edge_factor = 6,
.rc_quant_incr_limit0 = 11,
.rc_quant_incr_limit1 = 11,
.rc_tgt_offset_hi = 3,
.rc_tgt_offset_lo = 3,
},
.data_rate = 847,
.dyn_fps = {
.switch_en = 1, .vact_timing_fps = 90,
},
};
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_info(ctx->dev, "%s: cannot get reset-gpios %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)
{
struct lcm *ctx = panel_to_lcm(panel);
struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
unsigned char data[3];
unsigned char id[3] = {0x00, 0x00, 0x00};
ssize_t ret;
pr_info("%s success\n", __func__);
#if 0
ret = mipi_dsi_dcs_read(dsi, 0x4, data, 3);
if (ret < 0)
dev_info("%s error\n", __func__);
DDPINFO("ATA read data %x %x %x\n", data[0], data[1], data[2]);
if (data[0] == id[0] &&
data[1] == id[1] &&
data[2] == id[2])
return 1;
DDPINFO("ATA expect read data is %x %x %x\n",
id[0], id[1], id[2]);
#endif
return 1;
}
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 struct drm_display_mode *get_mode_by_id(struct drm_panel *panel,
unsigned int mode)
{
struct drm_display_mode *m;
unsigned int i = 0;
list_for_each_entry(m, &panel->connector->modes, head) {
if (i == mode)
return m;
i++;
}
return NULL;
}
static int mtk_panel_ext_param_set(struct drm_panel *panel, unsigned int mode)
{
struct mtk_panel_ext *ext = find_panel_ext(panel);
int ret = 0;
struct drm_display_mode *m = get_mode_by_id(panel, mode);
if (m->vrefresh == 60)
ext->params = &ext_params;
else if (m->vrefresh == 90)
ext->params = &ext_params_90hz;
else
ret = 1;
return ret;
}
static int lcm_get_virtual_heigh(void)
{
return VAC;
}
static int lcm_get_virtual_width(void)
{
return HAC;
}
static struct mtk_panel_funcs ext_funcs = {
.reset = panel_ext_reset,
.set_backlight_cmdq = lcm_setbacklight_cmdq,
.ata_check = panel_ata_check,
.ext_param_set = mtk_panel_ext_param_set,
.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 void change_drm_disp_mode_params(struct drm_display_mode *mode)
{
if (fake_heigh > 0 && fake_heigh < VAC) {
mode->vsync_start = mode->vsync_start - mode->vdisplay
+ fake_heigh;
mode->vsync_end = mode->vsync_end - mode->vdisplay + fake_heigh;
mode->vtotal = mode->vtotal - mode->vdisplay + fake_heigh;
mode->vdisplay = fake_heigh;
}
if (fake_width > 0 && fake_width < HAC) {
mode->hsync_start = mode->hsync_start - mode->hdisplay
+ fake_width;
mode->hsync_end = mode->hsync_end - mode->hdisplay + fake_width;
mode->htotal = mode->htotal - mode->hdisplay + fake_width;
mode->hdisplay = fake_width;
}
}
static int lcm_get_modes(struct drm_panel *panel)
{
struct drm_display_mode *mode;
struct drm_display_mode *mode2;
if (need_fake_resolution) {
change_drm_disp_mode_params(&default_mode);
change_drm_disp_mode_params(&performance_mode);
}
mode = drm_mode_duplicate(panel->drm, &default_mode);
if (!mode) {
dev_info(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);
mode2 = drm_mode_duplicate(panel->drm, &performance_mode);
if (!mode2) {
dev_info(panel->drm->dev, "failed to add mode %ux%ux@%u\n",
performance_mode.hdisplay,
performance_mode.vdisplay,
performance_mode.vrefresh);
return -ENOMEM;
}
drm_mode_set_name(mode2);
mode2->type = DRM_MODE_TYPE_DRIVER;
drm_mode_probed_add(panel->connector, mode2);
panel->connector->display_info.width_mm = 64;
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 void check_is_need_fake_resolution(struct device *dev)
{
unsigned int ret = 0;
ret = of_property_read_u32(dev->of_node, "fake_heigh", &fake_heigh);
if (ret)
need_fake_resolution = false;
ret = of_property_read_u32(dev->of_node, "fake_width", &fake_width);
if (ret)
need_fake_resolution = false;
if (fake_heigh > 0 && fake_heigh < VAC)
need_fake_resolution = true;
if (fake_width > 0 && fake_width < HAC)
need_fake_resolution = true;
}
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_VIDEO_SYNC_PULSE
| 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_info(dev, "cannot get reset-gpios %ld\n",
PTR_ERR(ctx->reset_gpio));
return PTR_ERR(ctx->reset_gpio);
}
devm_gpiod_put(dev, ctx->reset_gpio);
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
check_is_need_fake_resolution(dev);
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 = "sc,nt36672c,dphy,vdo,90hz", },
{ }
};
MODULE_DEVICE_TABLE(of, lcm_of_match);
static struct mipi_dsi_driver lcm_driver = {
.probe = lcm_probe,
.remove = lcm_remove,
.driver = {
.name = "panel-sc-nt36672c-dphy-vdo-90hz",
.owner = THIS_MODULE,
.of_match_table = lcm_of_match,
},
};
module_mipi_dsi_driver(lcm_driver);
MODULE_AUTHOR("MEDIATEK");
MODULE_DESCRIPTION("sc nt36672c VDO LCD Panel Driver");
MODULE_LICENSE("GPL v2");
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