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d60b93917a
When possible use dev_err_probe help to properly deal with the PROBE_DEFER error, the benefit is that DEFER issue will be logged in the devices_deferred debugfs file. And using dev_err_probe() can reduce code size, the error value gets printed. Signed-off-by: Cai Huoqing <caihuoqing@baidu.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20210916104635.11675-1-caihuoqing@baidu.com
349 lines
8.4 KiB
C
349 lines
8.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/* Copyright (c) 2020 Caleb Connolly <caleb@connolly.tech>
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* Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree:
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* Copyright (c) 2020, The Linux Foundation. All rights reserved.
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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/of_device.h>
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#include <linux/regulator/consumer.h>
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#include <linux/swab.h>
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#include <linux/backlight.h>
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#include <video/mipi_display.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 sofef00_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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const struct drm_display_mode *mode;
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bool prepared;
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};
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static inline
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struct sofef00_panel *to_sofef00_panel(struct drm_panel *panel)
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{
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return container_of(panel, struct sofef00_panel, panel);
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}
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#define dsi_dcs_write_seq(dsi, seq...) do { \
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static const u8 d[] = { seq }; \
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int ret; \
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ret = mipi_dsi_dcs_write_buffer(dsi, d, ARRAY_SIZE(d)); \
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if (ret < 0) \
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return ret; \
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} while (0)
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static void sofef00_panel_reset(struct sofef00_panel *ctx)
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{
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gpiod_set_value_cansleep(ctx->reset_gpio, 0);
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usleep_range(5000, 6000);
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gpiod_set_value_cansleep(ctx->reset_gpio, 1);
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usleep_range(2000, 3000);
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gpiod_set_value_cansleep(ctx->reset_gpio, 0);
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usleep_range(12000, 13000);
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}
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static int sofef00_panel_on(struct sofef00_panel *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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dsi->mode_flags |= MIPI_DSI_MODE_LPM;
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ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
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if (ret < 0) {
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dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
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return ret;
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}
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usleep_range(10000, 11000);
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dsi_dcs_write_seq(dsi, 0xf0, 0x5a, 0x5a);
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ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
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if (ret < 0) {
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dev_err(dev, "Failed to set tear on: %d\n", ret);
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return ret;
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}
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dsi_dcs_write_seq(dsi, 0xf0, 0xa5, 0xa5);
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dsi_dcs_write_seq(dsi, 0xf0, 0x5a, 0x5a);
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dsi_dcs_write_seq(dsi, 0xb0, 0x07);
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dsi_dcs_write_seq(dsi, 0xb6, 0x12);
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dsi_dcs_write_seq(dsi, 0xf0, 0xa5, 0xa5);
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dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20);
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dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_POWER_SAVE, 0x00);
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ret = mipi_dsi_dcs_set_display_on(dsi);
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if (ret < 0) {
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dev_err(dev, "Failed to set display on: %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 int sofef00_panel_off(struct sofef00_panel *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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dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
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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(40);
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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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msleep(160);
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return 0;
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}
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static int sofef00_panel_prepare(struct drm_panel *panel)
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{
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struct sofef00_panel *ctx = to_sofef00_panel(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_enable(ctx->supply);
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if (ret < 0) {
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dev_err(dev, "Failed to enable regulator: %d\n", ret);
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return ret;
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}
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sofef00_panel_reset(ctx);
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ret = sofef00_panel_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, 1);
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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 sofef00_panel_unprepare(struct drm_panel *panel)
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{
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struct sofef00_panel *ctx = to_sofef00_panel(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 = sofef00_panel_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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regulator_disable(ctx->supply);
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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 enchilada_panel_mode = {
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.clock = (1080 + 112 + 16 + 36) * (2280 + 36 + 8 + 12) * 60 / 1000,
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.hdisplay = 1080,
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.hsync_start = 1080 + 112,
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.hsync_end = 1080 + 112 + 16,
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.htotal = 1080 + 112 + 16 + 36,
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.vdisplay = 2280,
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.vsync_start = 2280 + 36,
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.vsync_end = 2280 + 36 + 8,
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.vtotal = 2280 + 36 + 8 + 12,
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.width_mm = 68,
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.height_mm = 145,
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};
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static const struct drm_display_mode fajita_panel_mode = {
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.clock = (1080 + 72 + 16 + 36) * (2340 + 32 + 4 + 18) * 60 / 1000,
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.hdisplay = 1080,
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.hsync_start = 1080 + 72,
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.hsync_end = 1080 + 72 + 16,
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.htotal = 1080 + 72 + 16 + 36,
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.vdisplay = 2340,
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.vsync_start = 2340 + 32,
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.vsync_end = 2340 + 32 + 4,
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.vtotal = 2340 + 32 + 4 + 18,
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.width_mm = 68,
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.height_mm = 145,
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};
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static int sofef00_panel_get_modes(struct drm_panel *panel, struct drm_connector *connector)
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{
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struct drm_display_mode *mode;
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struct sofef00_panel *ctx = to_sofef00_panel(panel);
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mode = drm_mode_duplicate(connector->dev, ctx->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 sofef00_panel_panel_funcs = {
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.prepare = sofef00_panel_prepare,
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.unprepare = sofef00_panel_unprepare,
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.get_modes = sofef00_panel_get_modes,
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};
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static int sofef00_panel_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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int err;
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u16 brightness;
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brightness = (u16)backlight_get_brightness(bl);
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// This panel needs the high and low bytes swapped for the brightness value
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brightness = __swab16(brightness);
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err = mipi_dsi_dcs_set_display_brightness(dsi, brightness);
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if (err < 0)
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return err;
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return 0;
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}
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static const struct backlight_ops sofef00_panel_bl_ops = {
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.update_status = sofef00_panel_bl_update_status,
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};
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static struct backlight_device *
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sofef00_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_PLATFORM,
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.brightness = 1023,
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.max_brightness = 1023,
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};
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return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
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&sofef00_panel_bl_ops, &props);
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}
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static int sofef00_panel_probe(struct mipi_dsi_device *dsi)
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{
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struct device *dev = &dsi->dev;
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struct sofef00_panel *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->mode = of_device_get_match_data(dev);
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if (!ctx->mode) {
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dev_err(dev, "Missing device mode\n");
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return -ENODEV;
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}
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ctx->supply = devm_regulator_get(dev, "vddio");
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if (IS_ERR(ctx->supply))
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return dev_err_probe(dev, PTR_ERR(ctx->supply),
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"Failed to get vddio regulator\n");
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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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return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
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"Failed to get reset-gpios\n");
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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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drm_panel_init(&ctx->panel, dev, &sofef00_panel_panel_funcs,
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DRM_MODE_CONNECTOR_DSI);
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ctx->panel.backlight = sofef00_create_backlight(dsi);
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if (IS_ERR(ctx->panel.backlight))
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return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight),
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"Failed to create backlight\n");
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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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drm_panel_remove(&ctx->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 int sofef00_panel_remove(struct mipi_dsi_device *dsi)
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{
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struct sofef00_panel *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, "Failed to detach from DSI host: %d\n", ret);
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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 sofef00_panel_of_match[] = {
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{ // OnePlus 6 / enchilada
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.compatible = "samsung,sofef00",
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.data = &enchilada_panel_mode,
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},
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{ // OnePlus 6T / fajita
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.compatible = "samsung,s6e3fc2x01",
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.data = &fajita_panel_mode,
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},
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{ /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(of, sofef00_panel_of_match);
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static struct mipi_dsi_driver sofef00_panel_driver = {
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.probe = sofef00_panel_probe,
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.remove = sofef00_panel_remove,
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.driver = {
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.name = "panel-oneplus6",
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.of_match_table = sofef00_panel_of_match,
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},
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};
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module_mipi_dsi_driver(sofef00_panel_driver);
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MODULE_AUTHOR("Caleb Connolly <caleb@connolly.tech>");
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MODULE_DESCRIPTION("DRM driver for Samsung AMOLED DSI panels found in OnePlus 6/6T phones");
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MODULE_LICENSE("GPL v2");
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