340 lines
8.9 KiB
C
340 lines
8.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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#include <linux/backlight.h>
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#include <linux/delay.h>
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#include <linux/gpio/consumer.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/regulator/consumer.h>
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#include <drm/drm_mipi_dsi.h>
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#include <drm/drm_modes.h>
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#include <drm/drm_panel.h>
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struct tm5p5_nt35596 {
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struct drm_panel panel;
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struct mipi_dsi_device *dsi;
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struct regulator_bulk_data supplies[2];
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struct gpio_desc *reset_gpio;
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bool prepared;
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};
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static inline struct tm5p5_nt35596 *to_tm5p5_nt35596(struct drm_panel *panel)
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{
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return container_of(panel, struct tm5p5_nt35596, panel);
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}
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static void tm5p5_nt35596_reset(struct tm5p5_nt35596 *ctx)
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{
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gpiod_set_value_cansleep(ctx->reset_gpio, 1);
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usleep_range(1000, 2000);
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gpiod_set_value_cansleep(ctx->reset_gpio, 0);
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usleep_range(1000, 2000);
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gpiod_set_value_cansleep(ctx->reset_gpio, 1);
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usleep_range(15000, 16000);
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}
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static int tm5p5_nt35596_on(struct tm5p5_nt35596 *ctx)
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{
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struct mipi_dsi_device *dsi = ctx->dsi;
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mipi_dsi_generic_write_seq(dsi, 0xff, 0x05);
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mipi_dsi_generic_write_seq(dsi, 0xfb, 0x01);
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mipi_dsi_generic_write_seq(dsi, 0xc5, 0x31);
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mipi_dsi_generic_write_seq(dsi, 0xff, 0x04);
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mipi_dsi_generic_write_seq(dsi, 0x01, 0x84);
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mipi_dsi_generic_write_seq(dsi, 0x05, 0x25);
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mipi_dsi_generic_write_seq(dsi, 0x06, 0x01);
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mipi_dsi_generic_write_seq(dsi, 0x07, 0x20);
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mipi_dsi_generic_write_seq(dsi, 0x08, 0x06);
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mipi_dsi_generic_write_seq(dsi, 0x09, 0x08);
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mipi_dsi_generic_write_seq(dsi, 0x0a, 0x10);
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mipi_dsi_generic_write_seq(dsi, 0x0b, 0x10);
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mipi_dsi_generic_write_seq(dsi, 0x0c, 0x10);
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mipi_dsi_generic_write_seq(dsi, 0x0d, 0x14);
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mipi_dsi_generic_write_seq(dsi, 0x0e, 0x14);
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mipi_dsi_generic_write_seq(dsi, 0x0f, 0x14);
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mipi_dsi_generic_write_seq(dsi, 0x10, 0x14);
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mipi_dsi_generic_write_seq(dsi, 0x11, 0x14);
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mipi_dsi_generic_write_seq(dsi, 0x12, 0x14);
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mipi_dsi_generic_write_seq(dsi, 0x17, 0xf3);
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mipi_dsi_generic_write_seq(dsi, 0x18, 0xc0);
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mipi_dsi_generic_write_seq(dsi, 0x19, 0xc0);
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mipi_dsi_generic_write_seq(dsi, 0x1a, 0xc0);
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mipi_dsi_generic_write_seq(dsi, 0x1b, 0xb3);
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mipi_dsi_generic_write_seq(dsi, 0x1c, 0xb3);
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mipi_dsi_generic_write_seq(dsi, 0x1d, 0xb3);
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mipi_dsi_generic_write_seq(dsi, 0x1e, 0xb3);
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mipi_dsi_generic_write_seq(dsi, 0x1f, 0xb3);
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mipi_dsi_generic_write_seq(dsi, 0x20, 0xb3);
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mipi_dsi_generic_write_seq(dsi, 0xfb, 0x01);
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mipi_dsi_generic_write_seq(dsi, 0xff, 0x00);
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mipi_dsi_generic_write_seq(dsi, 0xfb, 0x01);
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mipi_dsi_generic_write_seq(dsi, 0x35, 0x01);
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mipi_dsi_generic_write_seq(dsi, 0xd3, 0x06);
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mipi_dsi_generic_write_seq(dsi, 0xd4, 0x04);
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mipi_dsi_generic_write_seq(dsi, 0x5e, 0x0d);
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mipi_dsi_generic_write_seq(dsi, 0x11, 0x00);
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msleep(100);
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mipi_dsi_generic_write_seq(dsi, 0x29, 0x00);
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mipi_dsi_generic_write_seq(dsi, 0x53, 0x24);
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return 0;
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}
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static int tm5p5_nt35596_off(struct tm5p5_nt35596 *ctx)
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{
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struct mipi_dsi_device *dsi = ctx->dsi;
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struct device *dev = &dsi->dev;
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int ret;
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ret = mipi_dsi_dcs_set_display_off(dsi);
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if (ret < 0) {
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dev_err(dev, "Failed to set display off: %d\n", ret);
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return ret;
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}
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msleep(60);
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ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
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if (ret < 0) {
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dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
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return ret;
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}
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mipi_dsi_dcs_write_seq(dsi, 0x4f, 0x01);
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return 0;
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}
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static int tm5p5_nt35596_prepare(struct drm_panel *panel)
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{
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struct tm5p5_nt35596 *ctx = to_tm5p5_nt35596(panel);
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struct device *dev = &ctx->dsi->dev;
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int ret;
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if (ctx->prepared)
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return 0;
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ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
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if (ret < 0) {
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dev_err(dev, "Failed to enable regulators: %d\n", ret);
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return ret;
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}
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tm5p5_nt35596_reset(ctx);
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ret = tm5p5_nt35596_on(ctx);
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if (ret < 0) {
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dev_err(dev, "Failed to initialize panel: %d\n", ret);
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gpiod_set_value_cansleep(ctx->reset_gpio, 0);
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regulator_bulk_disable(ARRAY_SIZE(ctx->supplies),
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ctx->supplies);
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return ret;
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}
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ctx->prepared = true;
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return 0;
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}
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static int tm5p5_nt35596_unprepare(struct drm_panel *panel)
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{
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struct tm5p5_nt35596 *ctx = to_tm5p5_nt35596(panel);
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struct device *dev = &ctx->dsi->dev;
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int ret;
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if (!ctx->prepared)
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return 0;
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ret = tm5p5_nt35596_off(ctx);
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if (ret < 0)
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dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
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gpiod_set_value_cansleep(ctx->reset_gpio, 0);
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regulator_bulk_disable(ARRAY_SIZE(ctx->supplies),
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ctx->supplies);
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ctx->prepared = false;
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return 0;
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}
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static const struct drm_display_mode tm5p5_nt35596_mode = {
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.clock = (1080 + 100 + 8 + 16) * (1920 + 4 + 2 + 4) * 60 / 1000,
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.hdisplay = 1080,
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.hsync_start = 1080 + 100,
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.hsync_end = 1080 + 100 + 8,
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.htotal = 1080 + 100 + 8 + 16,
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.vdisplay = 1920,
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.vsync_start = 1920 + 4,
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.vsync_end = 1920 + 4 + 2,
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.vtotal = 1920 + 4 + 2 + 4,
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.width_mm = 68,
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.height_mm = 121,
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};
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static int tm5p5_nt35596_get_modes(struct drm_panel *panel,
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struct drm_connector *connector)
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{
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struct drm_display_mode *mode;
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mode = drm_mode_duplicate(connector->dev, &tm5p5_nt35596_mode);
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if (!mode)
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return -ENOMEM;
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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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connector->display_info.width_mm = mode->width_mm;
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connector->display_info.height_mm = mode->height_mm;
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drm_mode_probed_add(connector, mode);
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return 1;
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}
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static const struct drm_panel_funcs tm5p5_nt35596_panel_funcs = {
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.prepare = tm5p5_nt35596_prepare,
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.unprepare = tm5p5_nt35596_unprepare,
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.get_modes = tm5p5_nt35596_get_modes,
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};
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static int tm5p5_nt35596_bl_update_status(struct backlight_device *bl)
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{
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struct mipi_dsi_device *dsi = bl_get_data(bl);
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u16 brightness = backlight_get_brightness(bl);
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int ret;
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dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
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ret = mipi_dsi_dcs_set_display_brightness(dsi, brightness);
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if (ret < 0)
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return ret;
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dsi->mode_flags |= MIPI_DSI_MODE_LPM;
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return 0;
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}
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static int tm5p5_nt35596_bl_get_brightness(struct backlight_device *bl)
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{
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struct mipi_dsi_device *dsi = bl_get_data(bl);
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u16 brightness = bl->props.brightness;
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int ret;
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dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
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ret = mipi_dsi_dcs_get_display_brightness(dsi, &brightness);
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if (ret < 0)
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return ret;
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dsi->mode_flags |= MIPI_DSI_MODE_LPM;
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return brightness & 0xff;
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}
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static const struct backlight_ops tm5p5_nt35596_bl_ops = {
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.update_status = tm5p5_nt35596_bl_update_status,
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.get_brightness = tm5p5_nt35596_bl_get_brightness,
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};
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static struct backlight_device *
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tm5p5_nt35596_create_backlight(struct mipi_dsi_device *dsi)
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{
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struct device *dev = &dsi->dev;
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const struct backlight_properties props = {
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.type = BACKLIGHT_RAW,
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.brightness = 255,
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.max_brightness = 255,
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};
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return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
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&tm5p5_nt35596_bl_ops, &props);
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}
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static int tm5p5_nt35596_probe(struct mipi_dsi_device *dsi)
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{
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struct device *dev = &dsi->dev;
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struct tm5p5_nt35596 *ctx;
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int ret;
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ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
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if (!ctx)
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return -ENOMEM;
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ctx->supplies[0].supply = "vdd";
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ctx->supplies[1].supply = "vddio";
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ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),
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ctx->supplies);
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if (ret < 0) {
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dev_err(dev, "Failed to get regulators: %d\n", ret);
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return ret;
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}
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ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
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if (IS_ERR(ctx->reset_gpio)) {
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ret = PTR_ERR(ctx->reset_gpio);
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dev_err(dev, "Failed to get reset-gpios: %d\n", ret);
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return ret;
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}
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ctx->dsi = dsi;
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mipi_dsi_set_drvdata(dsi, ctx);
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dsi->lanes = 4;
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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_BURST |
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MIPI_DSI_MODE_VIDEO_HSE | MIPI_DSI_MODE_NO_EOT_PACKET |
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MIPI_DSI_CLOCK_NON_CONTINUOUS | MIPI_DSI_MODE_LPM;
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drm_panel_init(&ctx->panel, dev, &tm5p5_nt35596_panel_funcs,
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DRM_MODE_CONNECTOR_DSI);
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ctx->panel.backlight = tm5p5_nt35596_create_backlight(dsi);
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if (IS_ERR(ctx->panel.backlight)) {
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ret = PTR_ERR(ctx->panel.backlight);
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dev_err(dev, "Failed to create backlight: %d\n", ret);
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return ret;
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}
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drm_panel_add(&ctx->panel);
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ret = mipi_dsi_attach(dsi);
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if (ret < 0) {
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dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
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return ret;
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}
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return 0;
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}
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static void tm5p5_nt35596_remove(struct mipi_dsi_device *dsi)
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{
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struct tm5p5_nt35596 *ctx = mipi_dsi_get_drvdata(dsi);
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int ret;
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ret = mipi_dsi_detach(dsi);
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if (ret < 0)
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dev_err(&dsi->dev,
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"Failed to detach from DSI host: %d\n", ret);
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drm_panel_remove(&ctx->panel);
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}
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static const struct of_device_id tm5p5_nt35596_of_match[] = {
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{ .compatible = "asus,z00t-tm5p5-n35596" },
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{ /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(of, tm5p5_nt35596_of_match);
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static struct mipi_dsi_driver tm5p5_nt35596_driver = {
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.probe = tm5p5_nt35596_probe,
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.remove = tm5p5_nt35596_remove,
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.driver = {
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.name = "panel-tm5p5-nt35596",
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.of_match_table = tm5p5_nt35596_of_match,
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},
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};
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module_mipi_dsi_driver(tm5p5_nt35596_driver);
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MODULE_AUTHOR("Konrad Dybcio <konradybcio@gmail.com>");
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MODULE_DESCRIPTION("DRM driver for tm5p5 nt35596 1080p video mode dsi panel");
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MODULE_LICENSE("GPL v2");
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