671 lines
18 KiB
C
671 lines
18 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2019 MediaTek Inc.
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*/
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#include <linux/backlight.h>
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#include <drm/drmP.h>
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#include <drm/drm_mipi_dsi.h>
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#include <drm/drm_panel.h>
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#include <linux/gpio/consumer.h>
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#include <linux/regulator/consumer.h>
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#include <video/mipi_display.h>
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#include <video/of_videomode.h>
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#include <video/videomode.h>
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#include <linux/module.h>
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#include <linux/of_platform.h>
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#include <linux/platform_device.h>
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#define CONFIG_MTK_PANEL_EXT
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#if defined(CONFIG_MTK_PANEL_EXT)
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#include "../mediatek/mtk_panel_ext.h"
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#include "../mediatek/mtk_log.h"
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#endif
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#ifdef CONFIG_MTK_ROUND_CORNER_SUPPORT
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#include "../mediatek/mtk_corner_pattern/mtk_data_hw_roundedpattern.h"
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#endif
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/* enable this to check panel self -bist pattern */
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/* #define PANEL_BIST_PATTERN */
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/* option function to read data from some panel address */
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/* #define PANEL_SUPPORT_READBACK */
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struct lg_panel {
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struct device *dev;
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struct drm_panel panel;
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struct backlight_device *backlight;
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struct gpio_desc *reset_gpio;
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bool prepared;
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bool enabled;
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int error;
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};
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#define lg_dcs_write_seq(ctx, seq...) \
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({ \
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const u8 d[] = {seq}; \
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BUILD_BUG_ON_MSG(ARRAY_SIZE(d) > 64, \
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"DCS sequence too big for stack"); \
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lg_dcs_write(ctx, d, ARRAY_SIZE(d)); \
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})
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#define lg_dcs_write_seq_static(ctx, seq...) \
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({ \
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static const u8 d[] = {seq}; \
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lg_dcs_write(ctx, d, ARRAY_SIZE(d)); \
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})
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static inline struct lg_panel *panel_to_lg(struct drm_panel *panel)
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{
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return container_of(panel, struct lg_panel, panel);
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}
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#ifdef PANEL_SUPPORT_READBACK
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static int lg_dcs_read(struct lg_panel *ctx, u8 cmd, void *data, size_t len)
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{
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struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
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ssize_t ret;
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if (ctx->error < 0)
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return 0;
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ret = mipi_dsi_dcs_read(dsi, cmd, data, len);
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if (ret < 0) {
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dev_err(ctx->dev, "error %d reading dcs seq:(%#x)\n", ret, cmd);
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ctx->error = ret;
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}
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return ret;
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}
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static void lg_panel_get_data(struct lg_panel *ctx)
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{
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u8 buffer[3] = {0};
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static int ret;
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if (ret == 0) {
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ret = lg_dcs_read(ctx, 0x0A, buffer, 1);
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dev_info(ctx->dev, "return %d data(0x%08x) to dsi engine\n",
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ret, buffer[0] | (buffer[1] << 8));
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}
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}
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#endif
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#if defined(CONFIG_RT5081_PMU_DSV) || defined(CONFIG_MT6370_PMU_DSV)
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static struct regulator *disp_bias_pos;
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static struct regulator *disp_bias_neg;
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static int lg_panel_bias_regulator_init(void)
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{
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static int regulator_inited;
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int ret = 0;
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if (regulator_inited)
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return ret;
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/* please only get regulator once in a driver */
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disp_bias_pos = regulator_get(NULL, "dsv_pos");
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if (IS_ERR(disp_bias_pos)) { /* handle return value */
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ret = PTR_ERR(disp_bias_pos);
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pr_err("get dsv_pos fail, error: %d\n", ret);
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return ret;
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}
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disp_bias_neg = regulator_get(NULL, "dsv_neg");
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if (IS_ERR(disp_bias_neg)) { /* handle return value */
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ret = PTR_ERR(disp_bias_neg);
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pr_err("get dsv_neg fail, error: %d\n", ret);
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return ret;
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}
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regulator_inited = 1;
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return ret; /* must be 0 */
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}
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static int lg_panel_bias_enable(void)
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{
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int ret = 0;
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int retval = 0;
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lg_panel_bias_regulator_init();
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/* set voltage with min & max*/
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ret = regulator_set_voltage(disp_bias_pos, 5400000, 5400000);
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if (ret < 0)
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pr_err("set voltage disp_bias_pos fail, ret = %d\n", ret);
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retval |= ret;
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ret = regulator_set_voltage(disp_bias_neg, 5400000, 5400000);
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if (ret < 0)
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pr_err("set voltage disp_bias_neg fail, ret = %d\n", ret);
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retval |= ret;
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/* enable regulator */
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ret = regulator_enable(disp_bias_pos);
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if (ret < 0)
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pr_err("enable regulator disp_bias_pos fail, ret = %d\n", ret);
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retval |= ret;
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ret = regulator_enable(disp_bias_neg);
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if (ret < 0)
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pr_err("enable regulator disp_bias_neg fail, ret = %d\n", ret);
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retval |= ret;
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return retval;
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}
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static int lg_panel_bias_disable(void)
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{
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int ret = 0;
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int retval = 0;
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lg_panel_bias_regulator_init();
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ret = regulator_disable(disp_bias_neg);
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if (ret < 0)
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pr_err("disable regulator disp_bias_neg fail, ret = %d\n", ret);
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retval |= ret;
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ret = regulator_disable(disp_bias_pos);
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if (ret < 0)
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pr_err("disable regulator disp_bias_pos fail, ret = %d\n", ret);
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retval |= ret;
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return retval;
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}
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#endif
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static void lg_dcs_write(struct lg_panel *ctx, const void *data, size_t len)
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{
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struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
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ssize_t ret;
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char *addr;
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if (ctx->error < 0)
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return;
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addr = (char *)data;
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if ((int)*addr < 0xB0)
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ret = mipi_dsi_dcs_write_buffer(dsi, data, len);
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else
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ret = mipi_dsi_generic_write(dsi, data, len);
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if (ret < 0) {
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dev_err(ctx->dev, "error %zd writing seq: %ph\n", ret, data);
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ctx->error = ret;
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}
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}
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static void lg_panel_init(struct lg_panel *ctx)
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{
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ctx->reset_gpio = devm_gpiod_get(ctx->dev, "reset", GPIOD_OUT_HIGH);
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gpiod_set_value(ctx->reset_gpio, 0);
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udelay(15 * 1000);
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gpiod_set_value(ctx->reset_gpio, 1);
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udelay(1 * 1000);
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gpiod_set_value(ctx->reset_gpio, 0);
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udelay(10 * 1000);
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gpiod_set_value(ctx->reset_gpio, 1);
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udelay(10 * 1000);
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devm_gpiod_put(ctx->dev, ctx->reset_gpio);
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lg_dcs_write_seq_static(ctx, 0xB9, 0x83, 0x11, 0x2B);
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lg_dcs_write_seq_static(ctx, 0xB1, 0xF8, 0x29, 0x29, 0x00, 0x00, 0x0F,
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0x14, 0x0F, 0x14, 0x33);
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lg_dcs_write_seq_static(ctx, 0xD2, 0x2C, 0x2C);
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lg_dcs_write_seq_static(ctx, 0xB2, 0x80, 0x02, 0x00, 0x80, 0x70, 0x00,
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0x08, 0x1C, 0x09, 0x01, 0x04);
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lg_dcs_write_seq_static(ctx, 0xE9, 0xD1);
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lg_dcs_write_seq_static(ctx, 0xB2, 0x00, 0x08);
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lg_dcs_write_seq_static(ctx, 0xE9, 0x00);
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lg_dcs_write_seq_static(ctx, 0xE9, 0xCE);
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lg_dcs_write_seq_static(ctx, 0xB2, 0xA3);
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lg_dcs_write_seq_static(ctx, 0xE9, 0x00);
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lg_dcs_write_seq_static(ctx, 0xBD, 0x02);
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lg_dcs_write_seq_static(ctx, 0xB2, 0xB5, 0x0A);
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lg_dcs_write_seq_static(ctx, 0xBD, 0x00);
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lg_dcs_write_seq_static(ctx, 0xDD, 0x00, 0x00, 0x08, 0x1C, 0x09, 0x34,
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0x34, 0x8B);
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lg_dcs_write_seq_static(ctx, 0xB4, 0x01, 0xD3, 0x00, 0x00, 0x00, 0x00,
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0x03, 0xD0, 0x00, 0x00, 0x0F, 0xCB, 0x01, 0x00,
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0x00, 0x13, 0x00, 0x2E, 0x08, 0x01, 0x12, 0x00,
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0x00, 0x2E);
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lg_dcs_write_seq_static(ctx, 0xBD, 0x02);
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lg_dcs_write_seq_static(ctx, 0xB4, 0x92);
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lg_dcs_write_seq_static(ctx, 0xBD, 0x00);
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lg_dcs_write_seq_static(ctx, 0xB6, 0x81, 0x81, 0xE3);
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lg_dcs_write_seq_static(ctx, 0xC0, 0x44);
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lg_dcs_write_seq_static(ctx, 0xC2, 0x83);
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lg_dcs_write_seq_static(ctx, 0xCC, 0x08);
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lg_dcs_write_seq_static(ctx, 0xBD, 0x03);
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lg_dcs_write_seq_static(
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ctx, 0xC1, 0xFF, 0xFA, 0xF6, 0xF3, 0xEF, 0xEB, 0xE7, 0xE0, 0xDC,
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0xD9, 0xD6, 0xD2, 0xCF, 0xCB, 0xC7, 0xC3, 0xBF, 0xBB, 0xB7,
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0xB0, 0xA8, 0xA1, 0x9A, 0x92, 0x89, 0x81, 0x7A, 0x73, 0x6B,
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0x63, 0x5A, 0x51, 0x48, 0x40, 0x38, 0x31, 0x29, 0x20, 0x16,
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0x0D, 0x09, 0x07, 0x05, 0x02, 0x00, 0x08, 0x2E, 0xF6, 0x20,
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0x18, 0x94, 0xF8, 0x6F, 0x59, 0x18, 0xFC, 0x00);
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lg_dcs_write_seq_static(ctx, 0xBD, 0x02);
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lg_dcs_write_seq_static(
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ctx, 0xC1, 0xFF, 0xFA, 0xF6, 0xF3, 0xEF, 0xEB, 0xE7, 0xE0, 0xDC,
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0xD9, 0xD6, 0xD2, 0xCF, 0xCB, 0xC7, 0xC3, 0xBF, 0xBB, 0xB7,
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0xB0, 0xA8, 0xA1, 0x9A, 0x92, 0x89, 0x81, 0x7A, 0x73, 0x6B,
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0x63, 0x5A, 0x51, 0x48, 0x40, 0x38, 0x31, 0x29, 0x20, 0x16,
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0x0D, 0x09, 0x07, 0x05, 0x02, 0x00, 0x08, 0x2E, 0xF6, 0x20,
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0x18, 0x94, 0xF8, 0x6F, 0x59, 0x18, 0xFC, 0x00);
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lg_dcs_write_seq_static(ctx, 0xBD, 0x01);
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lg_dcs_write_seq_static(
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ctx, 0xC1, 0xFF, 0xFA, 0xF6, 0xF3, 0xEF, 0xEB, 0xE7, 0xE0, 0xDC,
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0xD9, 0xD6, 0xD2, 0xCF, 0xCB, 0xC7, 0xC3, 0xBF, 0xBB, 0xB7,
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0xB0, 0xA8, 0xA1, 0x9A, 0x92, 0x89, 0x81, 0x7A, 0x73, 0x6B,
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0x63, 0x5A, 0x51, 0x48, 0x40, 0x38, 0x31, 0x29, 0x20, 0x16,
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0x0D, 0x09, 0x07, 0x05, 0x02, 0x00, 0x08, 0x2E, 0xF6, 0x20,
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0x18, 0x94, 0xF8, 0x6F, 0x59, 0x18, 0xFC, 0x00);
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lg_dcs_write_seq_static(ctx, 0xBD, 0x00);
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lg_dcs_write_seq_static(ctx, 0xC1, 0x01);
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lg_dcs_write_seq_static(ctx, 0xD3, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01,
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0x01, 0x0A, 0x0A, 0x07, 0x00, 0x00, 0x08, 0x08,
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0x08, 0x08, 0x08, 0x32, 0x10, 0x08, 0x00, 0x08);
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lg_dcs_write_seq_static(ctx, 0xE9, 0xE3);
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lg_dcs_write_seq_static(ctx, 0xD3, 0x05, 0x08, 0x86);
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lg_dcs_write_seq_static(ctx, 0xE9, 0x00);
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lg_dcs_write_seq_static(ctx, 0xBD, 0x01);
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lg_dcs_write_seq_static(ctx, 0xE9, 0xC8);
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lg_dcs_write_seq_static(ctx, 0xD3, 0x81);
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lg_dcs_write_seq_static(ctx, 0xE9, 0x00);
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lg_dcs_write_seq_static(ctx, 0xBD, 0x00);
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lg_dcs_write_seq_static(
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ctx, 0xD5, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x31,
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0x31, 0x30, 0x30, 0x2F, 0x2F, 0x31, 0x31, 0x30, 0x30, 0x2F,
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0x2F, 0xC0, 0x18, 0x40, 0x40, 0x01, 0x00, 0x07, 0x06, 0x05,
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0x04, 0x03, 0x02, 0x21, 0x20, 0x18, 0x18, 0x19, 0x19, 0x18,
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0x18, 0x03, 0x03, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18);
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lg_dcs_write_seq_static(
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ctx, 0xD6, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x31,
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0x31, 0x30, 0x30, 0x2F, 0x2F, 0x31, 0x31, 0x30, 0x30, 0x2F,
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0x2F, 0xC0, 0x18, 0x40, 0x40, 0x02, 0x03, 0x04, 0x05, 0x06,
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0x07, 0x00, 0x01, 0x20, 0x21, 0x18, 0x18, 0x18, 0x18, 0x19,
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0x19, 0x20, 0x20, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18);
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lg_dcs_write_seq_static(ctx, 0xD8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00);
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lg_dcs_write_seq_static(ctx, 0xBD, 0x01);
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lg_dcs_write_seq_static(ctx, 0xD8, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
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0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
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0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
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0xAA, 0xAA);
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lg_dcs_write_seq_static(ctx, 0xBD, 0x02);
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lg_dcs_write_seq_static(ctx, 0xD8, 0xAF, 0xFF, 0xFA, 0xAA, 0xBA, 0xAA,
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0xAA, 0xFF, 0xFA, 0xAA, 0xBA, 0xAA);
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lg_dcs_write_seq_static(ctx, 0xBD, 0x03);
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lg_dcs_write_seq_static(ctx, 0xD8, 0xAA, 0xAA, 0xAB, 0xAA, 0xAE, 0xAA,
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0xAA, 0xAA, 0xAB, 0xAA, 0xAE, 0xAA, 0xAA, 0xFF,
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0xFA, 0xAA, 0xBA, 0xAA, 0xAA, 0xFF, 0xFA, 0xAA,
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0xBA, 0xAA);
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lg_dcs_write_seq_static(ctx, 0xBD, 0x00);
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lg_dcs_write_seq_static(ctx, 0xE7, 0x09, 0x09, 0x00, 0x07, 0xE6, 0x00,
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0x27, 0x00, 0x07, 0x00, 0x00, 0xE6, 0x2A, 0x00,
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0xE6, 0x00, 0x0A, 0x00, 0x00, 0x00, 0x01, 0x01,
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0x00, 0x12, 0x04);
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lg_dcs_write_seq_static(ctx, 0xE9, 0xE4);
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lg_dcs_write_seq_static(ctx, 0xE7, 0x17, 0x69);
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lg_dcs_write_seq_static(ctx, 0xE9, 0x00);
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lg_dcs_write_seq_static(ctx, 0xBD, 0x01);
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lg_dcs_write_seq_static(ctx, 0xE7, 0x00, 0x00, 0x01, 0x20, 0x01, 0x0E,
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0x08, 0xEE, 0x09);
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lg_dcs_write_seq_static(ctx, 0xBD, 0x02);
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lg_dcs_write_seq_static(ctx, 0xE7, 0x20, 0x20, 0x00);
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lg_dcs_write_seq_static(ctx, 0xBD, 0x03);
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lg_dcs_write_seq_static(ctx, 0xE7, 0x00, 0x08, 0x01, 0x00, 0x00, 0x20);
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lg_dcs_write_seq_static(ctx, 0xE9, 0xC9);
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lg_dcs_write_seq_static(ctx, 0xE7, 0x2E, 0xCB);
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lg_dcs_write_seq_static(ctx, 0xE9, 0x00);
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lg_dcs_write_seq_static(ctx, 0xBD, 0x00);
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lg_dcs_write_seq_static(ctx, 0xD1, 0x27);
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lg_dcs_write_seq_static(ctx, 0xBD, 0x01);
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lg_dcs_write_seq_static(ctx, 0xE9, 0xC2);
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lg_dcs_write_seq_static(ctx, 0xCB, 0x27);
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lg_dcs_write_seq_static(ctx, 0xE9, 0x00);
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lg_dcs_write_seq_static(ctx, 0xBD, 0x00);
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lg_dcs_write_seq_static(ctx, 0x51, 0x0F, 0xFF);
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lg_dcs_write_seq_static(ctx, 0x53, 0x24);
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lg_dcs_write_seq_static(ctx, 0x55, 0x00);
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lg_dcs_write_seq_static(ctx, 0x35, 0x00);
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lg_dcs_write_seq_static(ctx, 0x44, 0x08, 0x66);
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lg_dcs_write_seq_static(ctx, 0x11);
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msleep(150);
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lg_dcs_write_seq_static(ctx, 0xE9, 0xC2);
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lg_dcs_write_seq_static(ctx, 0xB0, 0x01);
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lg_dcs_write_seq_static(ctx, 0xE9, 0x00);
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lg_dcs_write_seq_static(ctx, 0x29);
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msleep(50);
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}
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static int lg_disable(struct drm_panel *panel)
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{
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struct lg_panel *ctx = panel_to_lg(panel);
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if (!ctx->enabled)
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return 0;
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if (ctx->backlight) {
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ctx->backlight->props.power = FB_BLANK_POWERDOWN;
|
|
backlight_update_status(ctx->backlight);
|
|
}
|
|
|
|
ctx->enabled = false;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int lg_unprepare(struct drm_panel *panel)
|
|
{
|
|
struct lg_panel *ctx = panel_to_lg(panel);
|
|
|
|
if (!ctx->prepared)
|
|
return 0;
|
|
|
|
lg_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_OFF);
|
|
msleep(50);
|
|
lg_dcs_write_seq_static(ctx, MIPI_DCS_ENTER_SLEEP_MODE);
|
|
msleep(150);
|
|
|
|
ctx->error = 0;
|
|
ctx->prepared = false;
|
|
#if defined(CONFIG_RT5081_PMU_DSV) || defined(CONFIG_MT6370_PMU_DSV)
|
|
lg_panel_bias_disable();
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int lg_prepare(struct drm_panel *panel)
|
|
{
|
|
struct lg_panel *ctx = panel_to_lg(panel);
|
|
int ret;
|
|
|
|
pr_info("%s\n", __func__);
|
|
if (ctx->prepared)
|
|
return 0;
|
|
|
|
#if defined(CONFIG_RT5081_PMU_DSV) || defined(CONFIG_MT6370_PMU_DSV)
|
|
lg_panel_bias_enable();
|
|
#endif
|
|
|
|
lg_panel_init(ctx);
|
|
|
|
ret = ctx->error;
|
|
if (ret < 0)
|
|
lg_unprepare(panel);
|
|
|
|
ctx->prepared = true;
|
|
|
|
#ifdef PANEL_SUPPORT_READBACK
|
|
lg_panel_get_data(ctx);
|
|
#endif
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int lg_enable(struct drm_panel *panel)
|
|
{
|
|
struct lg_panel *ctx = panel_to_lg(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;
|
|
}
|
|
|
|
static const struct drm_display_mode default_mode = {
|
|
.clock = 151110,
|
|
.hdisplay = 1080,
|
|
.hsync_start = 1080 + 40,
|
|
.hsync_end = 1080 + 40 + 10,
|
|
.htotal = 1080 + 40 + 10 + 20,
|
|
.vdisplay = 2160,
|
|
.vsync_start = 2160 + 20,
|
|
.vsync_end = 2160 + 20 + 2,
|
|
.vtotal = 2160 + 20 + 2 + 8,
|
|
.vrefresh = 60,
|
|
};
|
|
|
|
#if defined(CONFIG_MTK_PANEL_EXT)
|
|
static int panel_ext_reset(struct drm_panel *panel, int on)
|
|
{
|
|
struct lg_panel *ctx = panel_to_lg(panel);
|
|
|
|
ctx->reset_gpio = devm_gpiod_get(ctx->dev, "reset", GPIOD_OUT_HIGH);
|
|
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 lg_panel *ctx = panel_to_lg(panel);
|
|
struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
|
|
unsigned char data[3];
|
|
unsigned char id[3] = {0x83, 0x11, 0x2b};
|
|
ssize_t ret;
|
|
|
|
ret = mipi_dsi_dcs_read(dsi, 0x4, data, 3);
|
|
if (ret < 0)
|
|
pr_err("%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]);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct mtk_panel_params ext_params = {
|
|
.vfp_low_power = 600,
|
|
.cust_esd_check = 0,
|
|
.esd_check_enable = 1,
|
|
.lcm_esd_check_table[0] = {
|
|
|
|
.cmd = 0x0a, .count = 1, .para_list[0] = 0x9d,
|
|
},
|
|
.physical_width_um = 64152,
|
|
.physical_height_um = 128304,
|
|
#ifdef CONFIG_MTK_ROUND_CORNER_SUPPORT
|
|
.round_corner_en = 1,
|
|
.corner_pattern_height = ROUND_CORNER_H_TOP,
|
|
.corner_pattern_height_bot = ROUND_CORNER_H_BOT,
|
|
.corner_pattern_tp_size = sizeof(top_rc_pattern),
|
|
.corner_pattern_lt_addr = (void *)top_rc_pattern,
|
|
#endif
|
|
};
|
|
|
|
static struct mtk_panel_funcs ext_funcs = {
|
|
.reset = panel_ext_reset,
|
|
.ata_check = panel_ata_check,
|
|
};
|
|
#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;
|
|
|
|
/**
|
|
* @prepare: the time (in milliseconds) that it takes for the panel to
|
|
* become ready and start receiving video data
|
|
* @enable: the time (in milliseconds) that it takes for the panel to
|
|
* display the first valid frame after starting to receive
|
|
* video data
|
|
* @disable: the time (in milliseconds) that it takes for the panel to
|
|
* turn the display off (no content is visible)
|
|
* @unprepare: the time (in milliseconds) that it takes for the panel
|
|
* to power itself down completely
|
|
*/
|
|
struct {
|
|
unsigned int prepare;
|
|
unsigned int enable;
|
|
unsigned int disable;
|
|
unsigned int unprepare;
|
|
} delay;
|
|
};
|
|
|
|
static int lg_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 = 64;
|
|
panel->connector->display_info.height_mm = 128;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static const struct drm_panel_funcs lg_drm_funcs = {
|
|
.disable = lg_disable,
|
|
.unprepare = lg_unprepare,
|
|
.prepare = lg_prepare,
|
|
.enable = lg_enable,
|
|
.get_modes = lg_get_modes,
|
|
};
|
|
|
|
static int lg_probe(struct mipi_dsi_device *dsi)
|
|
{
|
|
struct device *dev = &dsi->dev;
|
|
struct lg_panel *ctx;
|
|
struct device_node *backlight;
|
|
int ret;
|
|
|
|
pr_info("%s+\n", __func__);
|
|
ctx = devm_kzalloc(dev, sizeof(struct lg_panel), 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_err(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 = &lg_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)
|
|
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 lg_remove(struct mipi_dsi_device *dsi)
|
|
{
|
|
struct lg_panel *ctx = mipi_dsi_get_drvdata(dsi);
|
|
|
|
mipi_dsi_detach(dsi);
|
|
drm_panel_remove(&ctx->panel);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id lg_of_match[] = {
|
|
{
|
|
.compatible = "lg,0565g40108",
|
|
},
|
|
{} };
|
|
|
|
MODULE_DEVICE_TABLE(of, lg_of_match);
|
|
|
|
static struct mipi_dsi_driver lg_driver = {
|
|
.probe = lg_probe,
|
|
.remove = lg_remove,
|
|
.driver = {
|
|
|
|
.name = "panel-lg-0565g40108",
|
|
.owner = THIS_MODULE,
|
|
.of_match_table = lg_of_match,
|
|
},
|
|
};
|
|
|
|
module_mipi_dsi_driver(lg_driver);
|
|
|
|
MODULE_AUTHOR("Robin Chen <robin.chen@mediatek.com>");
|
|
MODULE_DESCRIPTION("lg 0565g40108 LCD Panel Driver");
|
|
MODULE_LICENSE("GPL v2");
|