245 lines
6.2 KiB
C
245 lines
6.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree.
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* Copyright (c) 2024 Luca Weiss <luca.weiss@fairphone.com>
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*/
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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 <linux/types.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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#include <drm/drm_probe_helper.h>
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/* Manufacturer specific DSI commands */
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#define EK79007AD3_GAMMA1 0x80
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#define EK79007AD3_GAMMA2 0x81
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#define EK79007AD3_GAMMA3 0x82
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#define EK79007AD3_GAMMA4 0x83
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#define EK79007AD3_GAMMA5 0x84
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#define EK79007AD3_GAMMA6 0x85
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#define EK79007AD3_GAMMA7 0x86
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#define EK79007AD3_PANEL_CTRL3 0xB2
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struct m9189_panel {
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struct drm_panel panel;
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struct mipi_dsi_device *dsi;
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struct regulator *supply;
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struct gpio_desc *reset_gpio;
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struct gpio_desc *standby_gpio;
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};
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static inline struct m9189_panel *to_m9189_panel(struct drm_panel *panel)
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{
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return container_of(panel, struct m9189_panel, panel);
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}
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static void m9189_reset(struct m9189_panel *m9189)
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{
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gpiod_set_value_cansleep(m9189->reset_gpio, 0);
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msleep(20);
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gpiod_set_value_cansleep(m9189->reset_gpio, 1);
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msleep(30);
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gpiod_set_value_cansleep(m9189->reset_gpio, 0);
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msleep(55);
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}
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static int m9189_on(struct m9189_panel *m9189)
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{
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struct mipi_dsi_multi_context ctx = { .dsi = m9189->dsi };
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ctx.dsi->mode_flags |= MIPI_DSI_MODE_LPM;
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/* Gamma 2.2 */
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mipi_dsi_dcs_write_seq_multi(&ctx, EK79007AD3_GAMMA1, 0x48);
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mipi_dsi_dcs_write_seq_multi(&ctx, EK79007AD3_GAMMA2, 0xB8);
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mipi_dsi_dcs_write_seq_multi(&ctx, EK79007AD3_GAMMA3, 0x88);
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mipi_dsi_dcs_write_seq_multi(&ctx, EK79007AD3_GAMMA4, 0x88);
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mipi_dsi_dcs_write_seq_multi(&ctx, EK79007AD3_GAMMA5, 0x58);
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mipi_dsi_dcs_write_seq_multi(&ctx, EK79007AD3_GAMMA6, 0xD2);
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mipi_dsi_dcs_write_seq_multi(&ctx, EK79007AD3_GAMMA7, 0x88);
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mipi_dsi_msleep(&ctx, 50);
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/* 4 Lanes */
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mipi_dsi_generic_write_multi(&ctx, (u8[]){ EK79007AD3_PANEL_CTRL3, 0x70 }, 2);
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mipi_dsi_dcs_exit_sleep_mode_multi(&ctx);
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mipi_dsi_msleep(&ctx, 120);
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mipi_dsi_dcs_set_display_on_multi(&ctx);
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mipi_dsi_msleep(&ctx, 120);
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return ctx.accum_err;
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}
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static int m9189_disable(struct drm_panel *panel)
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{
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struct m9189_panel *m9189 = to_m9189_panel(panel);
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struct mipi_dsi_multi_context ctx = { .dsi = m9189->dsi };
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ctx.dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
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mipi_dsi_dcs_enter_sleep_mode_multi(&ctx);
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mipi_dsi_msleep(&ctx, 120);
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gpiod_set_value_cansleep(m9189->standby_gpio, 1);
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return ctx.accum_err;
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}
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static int m9189_prepare(struct drm_panel *panel)
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{
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struct m9189_panel *m9189 = to_m9189_panel(panel);
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struct device *dev = &m9189->dsi->dev;
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int ret;
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ret = regulator_enable(m9189->supply);
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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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gpiod_set_value_cansleep(m9189->standby_gpio, 0);
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msleep(20);
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m9189_reset(m9189);
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ret = m9189_on(m9189);
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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(m9189->reset_gpio, 1);
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regulator_disable(m9189->supply);
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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 int m9189_unprepare(struct drm_panel *panel)
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{
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struct m9189_panel *m9189 = to_m9189_panel(panel);
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gpiod_set_value_cansleep(m9189->standby_gpio, 1);
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msleep(50);
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gpiod_set_value_cansleep(m9189->reset_gpio, 1);
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regulator_disable(m9189->supply);
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return 0;
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}
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static const struct drm_display_mode m9189_mode = {
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.clock = (1024 + 160 + 160 + 10) * (600 + 12 + 23 + 1) * 60 / 1000,
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.hdisplay = 1024,
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.hsync_start = 1024 + 160,
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.hsync_end = 1024 + 160 + 160,
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.htotal = 1024 + 160 + 160 + 10,
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.vdisplay = 600,
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.vsync_start = 600 + 12,
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.vsync_end = 600 + 12 + 23,
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.vtotal = 600 + 12 + 23 + 1,
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.width_mm = 154,
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.height_mm = 86,
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};
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static int m9189_get_modes(struct drm_panel *panel,
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struct drm_connector *connector)
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{
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return drm_connector_helper_get_modes_fixed(connector, &m9189_mode);
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}
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static const struct drm_panel_funcs m9189_panel_funcs = {
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.prepare = m9189_prepare,
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.unprepare = m9189_unprepare,
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.disable = m9189_disable,
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.get_modes = m9189_get_modes,
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};
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static int lxd_m9189_probe(struct mipi_dsi_device *dsi)
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{
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struct device *dev = &dsi->dev;
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struct m9189_panel *m9189;
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int ret;
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m9189 = devm_drm_panel_alloc(dev, __typeof(*m9189), panel,
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&m9189_panel_funcs,
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DRM_MODE_CONNECTOR_DSI);
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if (IS_ERR(m9189))
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return PTR_ERR(m9189);
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m9189->supply = devm_regulator_get(dev, "power");
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if (IS_ERR(m9189->supply))
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return dev_err_probe(dev, PTR_ERR(m9189->supply),
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"Failed to get power-supply\n");
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m9189->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
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if (IS_ERR(m9189->reset_gpio))
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return dev_err_probe(dev, PTR_ERR(m9189->reset_gpio),
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"Failed to get reset-gpios\n");
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m9189->standby_gpio = devm_gpiod_get(dev, "standby", GPIOD_OUT_LOW);
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if (IS_ERR(m9189->standby_gpio))
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return dev_err_probe(dev, PTR_ERR(m9189->standby_gpio),
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"Failed to get standby-gpios\n");
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m9189->dsi = dsi;
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mipi_dsi_set_drvdata(dsi, m9189);
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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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m9189->panel.prepare_prev_first = true;
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ret = drm_panel_of_backlight(&m9189->panel);
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if (ret)
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return dev_err_probe(dev, ret, "Failed to get backlight\n");
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drm_panel_add(&m9189->panel);
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ret = mipi_dsi_attach(dsi);
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if (ret < 0) {
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dev_err_probe(dev, ret, "Failed to attach to DSI host\n");
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drm_panel_remove(&m9189->panel);
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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 lxd_m9189_remove(struct mipi_dsi_device *dsi)
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{
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struct m9189_panel *m9189 = 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, "Failed to detach from DSI host: %d\n", ret);
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drm_panel_remove(&m9189->panel);
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}
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static const struct of_device_id lxd_m9189_of_match[] = {
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{ .compatible = "lxd,m9189a" },
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{ /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(of, lxd_m9189_of_match);
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static struct mipi_dsi_driver lxd_m9189_driver = {
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.probe = lxd_m9189_probe,
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.remove = lxd_m9189_remove,
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.driver = {
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.name = "panel-lxd-m9189a",
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.of_match_table = lxd_m9189_of_match,
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},
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};
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module_mipi_dsi_driver(lxd_m9189_driver);
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MODULE_DESCRIPTION("DRM driver for LXD M9189A MIPI-DSI panels");
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MODULE_LICENSE("GPL");
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