547 lines
12 KiB
C
Executable file
547 lines
12 KiB
C
Executable file
/* 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 <linux/delay.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 <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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#include "../mediatek/mtk_drm_graphics_base.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 tianma {
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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 tianma_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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tianma_dcs_write(ctx, d, ARRAY_SIZE(d)); \
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})
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#define tianma_dcs_write_seq_static(ctx, seq...) \
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({ \
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static const u8 d[] = {seq}; \
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tianma_dcs_write(ctx, d, ARRAY_SIZE(d)); \
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})
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static inline struct tianma *panel_to_tianma(struct drm_panel *panel)
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{
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return container_of(panel, struct tianma, panel);
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}
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#ifdef PANEL_SUPPORT_READBACK
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static int tianma_dcs_read(struct tianma *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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pr_notice("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 tianma_panel_get_data(struct tianma *ctx)
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{
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u8 buffer[3] = {0};
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static int ret;
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pr_info("%s+\n", __func__);
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if (ret == 0) {
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ret = tianma_dcs_read(ctx, 0x0A, buffer, 1);
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pr_info("%s 0x%08x\n", __func__,
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buffer[0] | (buffer[1] << 8));
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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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static void tianma_dcs_write(struct tianma *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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pr_notice("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 tianma_panel_init(struct tianma *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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usleep_range(10 * 1000, 15 * 1000);
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gpiod_set_value(ctx->reset_gpio, 0);
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usleep_range(10 * 1000, 15 * 1000);
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gpiod_set_value(ctx->reset_gpio, 1);
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usleep_range(10 * 1000, 15 * 1000);
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devm_gpiod_put(ctx->dev, ctx->reset_gpio);
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pr_info("%s+\n", __func__);
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//tianma_dcs_write_seq_static(ctx, 0xFF, 0x25);
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//msleep(100);
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//tianma_dcs_write_seq_static(ctx, 0xFB, 0x01);
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//tianma_dcs_write_seq_static(ctx, 0x18, 0x21);
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tianma_dcs_write_seq_static(ctx, 0xFF, 0x10);
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msleep(100);
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tianma_dcs_write_seq_static(ctx, 0xFB, 0x01);
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tianma_dcs_write_seq_static(ctx, 0xBA, 0x02);
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tianma_dcs_write_seq_static(ctx, 0x35, 0x00);
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tianma_dcs_write_seq_static(ctx, 0xBB, 0x03);//lane_num
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tianma_dcs_write_seq_static(ctx, 0xC0, 0x00);
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tianma_dcs_write_seq_static(ctx, 0x11);
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msleep(120);
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tianma_dcs_write_seq_static(ctx, 0x29);
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pr_info("%s-\n", __func__);
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}
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static int tianma_disable(struct drm_panel *panel)
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{
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struct tianma *ctx = panel_to_tianma(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;
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backlight_update_status(ctx->backlight);
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}
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ctx->enabled = false;
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return 0;
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}
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static int tianma_unprepare(struct drm_panel *panel)
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{
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struct tianma *ctx = panel_to_tianma(panel);
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pr_info("%s\n", __func__);
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if (!ctx->prepared)
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return 0;
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tianma_dcs_write_seq_static(ctx, MIPI_DCS_ENTER_SLEEP_MODE);
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tianma_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_OFF);
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msleep(200);
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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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devm_gpiod_put(ctx->dev, ctx->reset_gpio);
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ctx->error = 0;
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ctx->prepared = false;
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return 0;
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}
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static int tianma_prepare(struct drm_panel *panel)
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{
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struct tianma *ctx = panel_to_tianma(panel);
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int ret;
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pr_info("%s+\n", __func__);
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if (ctx->prepared)
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return 0;
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tianma_panel_init(ctx);
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ret = ctx->error;
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if (ret < 0)
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tianma_unprepare(panel);
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ctx->prepared = true;
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#ifdef PANEL_SUPPORT_READBACK
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tianma_panel_get_data(ctx);
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#endif
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pr_info("%s-\n", __func__);
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return ret;
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}
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static int tianma_enable(struct drm_panel *panel)
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{
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struct tianma *ctx = panel_to_tianma(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_UNBLANK;
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backlight_update_status(ctx->backlight);
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}
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ctx->enabled = true;
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return 0;
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}
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static const struct drm_display_mode default_mode = {
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.clock = 306825,
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.hdisplay = 1080,
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.hsync_start = 1080 + 256,
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.hsync_end = 1080 + 256 + 20,
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.htotal = 1080 + 256 + 20 + 22,
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.vdisplay = 2400,
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.vsync_start = 2400 + 1291,
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.vsync_end = 2400 + 1291 + 10,
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.vtotal = 2400 + 1291 + 10 + 10,
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.vrefresh = 60,
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};
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static const struct drm_display_mode performance_mode = {
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.clock = 306825,
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.hdisplay = 1080,
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.hsync_start = 1080 + 256,
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.hsync_end = 1080 + 256 + 20,
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.htotal = 1080 + 256 + 20 + 22,
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.vdisplay = 2400,
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.vsync_start = 2400 + 54,
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.vsync_end = 2400 + 54 + 10,
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.vtotal = 2400 + 54 + 10 + 10,
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.vrefresh = 90,
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};
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#if defined(CONFIG_MTK_PANEL_EXT)
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static struct mtk_panel_params ext_params = {
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.pll_clk = 538,
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.cust_esd_check = 0,
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.esd_check_enable = 1,
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.lcm_esd_check_table[0] = {
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.cmd = 0x0A, .count = 1, .para_list[0] = 0x9C,
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},
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.is_cphy = 1,
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.data_rate = 1075,
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.dyn_fps = {
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.switch_en = 1,
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.vact_timing_fps = 90,
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},
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.dyn = {
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.switch_en = 1,
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.pll_clk = 550,
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.hfp = 288,
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.vfp = 1291,
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},
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};
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static struct mtk_panel_params ext_params_90hz = {
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.pll_clk = 538,
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.vfp_low_power = 1291,
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.cust_esd_check = 0,
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.esd_check_enable = 1,
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.lcm_esd_check_table[0] = {
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.cmd = 0x0A, .count = 1, .para_list[0] = 0x9C,
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},
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.is_cphy = 1,
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.data_rate = 1075,
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.dyn_fps = {
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.switch_en = 1,
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.vact_timing_fps = 90,
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},
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.dyn = {
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.switch_en = 1,
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.pll_clk = 550,
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.vfp_lp_dyn = 1291,
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.hfp = 288,
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.vfp = 54,
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},
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};
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static int tianma_setbacklight_cmdq(void *dsi, dcs_write_gce cb,
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void *handle, unsigned int level)
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{
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char bl_tb0[] = {0x51, 0xf, 0xff};
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if (level > 255)
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level = 255;
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level = level * 4095 / 255;
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bl_tb0[1] = ((level >> 8) & 0xf);
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bl_tb0[2] = (level & 0xff);
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if (!cb)
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return -1;
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cb(dsi, handle, bl_tb0, ARRAY_SIZE(bl_tb0));
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return 0;
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}
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static int mtk_panel_ext_param_set(struct drm_panel *panel,
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unsigned int mode)
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{
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struct mtk_panel_ext *ext = find_panel_ext(panel);
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int ret = 0;
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if (mode == 0)
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ext->params = &ext_params;
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else if (mode == 1)
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ext->params = &ext_params_90hz;
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else
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ret = 1;
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return ret;
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}
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static int mtk_panel_ext_param_get(struct mtk_panel_params *ext_para,
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unsigned int mode)
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{
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int ret = 0;
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if (mode == 0)
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ext_para = &ext_params;
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else if (mode == 1)
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ext_para = &ext_params_90hz;
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else
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ret = 1;
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return ret;
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}
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static int panel_ext_reset(struct drm_panel *panel, int on)
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{
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struct tianma *ctx = panel_to_tianma(panel);
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ctx->reset_gpio =
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devm_gpiod_get(ctx->dev, "reset", GPIOD_OUT_HIGH);
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gpiod_set_value(ctx->reset_gpio, on);
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devm_gpiod_put(ctx->dev, ctx->reset_gpio);
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return 0;
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}
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static struct mtk_panel_funcs ext_funcs = {
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.reset = panel_ext_reset,
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.set_backlight_cmdq = tianma_setbacklight_cmdq,
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.ext_param_set = mtk_panel_ext_param_set,
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.ext_param_get = mtk_panel_ext_param_get,
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};
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#endif
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struct panel_desc {
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const struct drm_display_mode *modes;
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unsigned int num_modes;
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unsigned int bpc;
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struct {
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unsigned int width;
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unsigned int height;
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} size;
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/**
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* @prepare: the time (in milliseconds) that it takes for the panel to
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* become ready and start receiving video data
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* @enable: the time (in milliseconds) that it takes for the panel to
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* display the first valid frame after starting to receive
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* video data
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* @disable: the time (in milliseconds) that it takes for the panel to
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* turn the display off (no content is visible)
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* @unprepare: the time (in milliseconds) that it takes for the panel
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* to power itself down completely
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*/
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struct {
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unsigned int prepare;
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unsigned int enable;
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unsigned int disable;
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unsigned int unprepare;
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} delay;
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};
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static int tianma_get_modes(struct drm_panel *panel)
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{
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struct drm_display_mode *mode;
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struct drm_display_mode *mode2;
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mode = drm_mode_duplicate(panel->drm, &default_mode);
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if (!mode) {
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pr_notice("failed to add mode %ux%ux@%u\n",
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default_mode.hdisplay, default_mode.vdisplay,
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default_mode.vrefresh);
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return -ENOMEM;
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}
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drm_mode_set_name(mode);
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mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
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drm_mode_probed_add(panel->connector, mode);
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mode2 = drm_mode_duplicate(panel->drm, &performance_mode);
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if (!mode2) {
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pr_notice("failed to add mode %ux%ux@%u\n",
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performance_mode.hdisplay,
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performance_mode.vdisplay,
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performance_mode.vrefresh);
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return -ENOMEM;
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}
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drm_mode_set_name(mode2);
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mode2->type = DRM_MODE_TYPE_DRIVER;
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drm_mode_probed_add(panel->connector, mode2);
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panel->connector->display_info.width_mm = 70;
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panel->connector->display_info.height_mm = 152;
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return 1;
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}
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static const struct drm_panel_funcs tianma_drm_funcs = {
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.disable = tianma_disable,
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.unprepare = tianma_unprepare,
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.prepare = tianma_prepare,
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.enable = tianma_enable,
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.get_modes = tianma_get_modes,
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};
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static int tianma_probe(struct mipi_dsi_device *dsi)
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{
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struct device *dev = &dsi->dev;
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struct tianma *ctx;
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struct device_node *backlight;
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int ret;
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pr_info("%s+\n", __func__);
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ctx = devm_kzalloc(dev, sizeof(struct tianma), GFP_KERNEL);
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if (!ctx)
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return -ENOMEM;
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mipi_dsi_set_drvdata(dsi, ctx);
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ctx->dev = dev;
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dsi->lanes = 3;
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dsi->format = MIPI_DSI_FMT_RGB888;
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dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE
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|MIPI_DSI_MODE_LPM | MIPI_DSI_MODE_EOT_PACKET |
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MIPI_DSI_CLOCK_NON_CONTINUOUS;
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backlight = of_parse_phandle(dev->of_node, "backlight", 0);
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if (backlight) {
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ctx->backlight = of_find_backlight_by_node(backlight);
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of_node_put(backlight);
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if (!ctx->backlight)
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return -EPROBE_DEFER;
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}
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ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
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if (IS_ERR(ctx->reset_gpio)) {
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pr_notice("cannot get reset-gpios %ld\n",
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PTR_ERR(ctx->reset_gpio));
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return PTR_ERR(ctx->reset_gpio);
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}
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devm_gpiod_put(dev, ctx->reset_gpio);
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ctx->prepared = true;
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ctx->enabled = true;
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drm_panel_init(&ctx->panel);
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ctx->panel.dev = dev;
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ctx->panel.funcs = &tianma_drm_funcs;
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ret = drm_panel_add(&ctx->panel);
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if (ret < 0)
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return ret;
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ret = mipi_dsi_attach(dsi);
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if (ret < 0)
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drm_panel_remove(&ctx->panel);
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#if defined(CONFIG_MTK_PANEL_EXT)
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ret = mtk_panel_ext_create(dev, &ext_params, &ext_funcs, &ctx->panel);
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if (ret < 0)
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return ret;
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#endif
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pr_info("%s-\n", __func__);
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return ret;
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}
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static int tianma_remove(struct mipi_dsi_device *dsi)
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{
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struct tianma *ctx = mipi_dsi_get_drvdata(dsi);
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mipi_dsi_detach(dsi);
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drm_panel_remove(&ctx->panel);
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return 0;
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}
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static const struct of_device_id tianma_of_match[] = {
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{
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.compatible = "tianma,nt36672c,cphy,vdo",
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},
|
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{} };
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|
|
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MODULE_DEVICE_TABLE(of, tianma_of_match);
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|
|
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static struct mipi_dsi_driver tianma_driver = {
|
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.probe = tianma_probe,
|
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.remove = tianma_remove,
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.driver = {
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|
|
|
.name = "panel-tianma-nt36672c-cphy-vdo",
|
|
.owner = THIS_MODULE,
|
|
.of_match_table = tianma_of_match,
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|
},
|
|
};
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|
|
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module_mipi_dsi_driver(tianma_driver);
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|
|
|
MODULE_AUTHOR("Elon Hsu <elon.hsu@mediatek.com>");
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|
MODULE_DESCRIPTION("tianma r66451 CMD AMOLED Panel Driver");
|
|
MODULE_LICENSE("GPL v2");
|