2019-06-03 13:44:50 +08:00
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// SPDX-License-Identifier: GPL-2.0-only
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2015-10-31 06:34:30 +08:00
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/*
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* Copyright (C) 2015 Red Hat
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* Copyright (C) 2015 Sony Mobile Communications Inc.
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* Author: Werner Johansson <werner.johansson@sonymobile.com>
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*
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* Based on AUO panel driver by Rob Clark <robdclark@gmail.com>
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*/
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2019-05-27 02:05:32 +08:00
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#include <linux/delay.h>
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2015-10-31 06:34:30 +08:00
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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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2019-05-27 02:05:32 +08:00
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#include <video/mipi_display.h>
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2015-10-31 06:34:30 +08:00
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#include <drm/drm_crtc.h>
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2019-05-27 02:05:32 +08:00
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#include <drm/drm_device.h>
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2015-10-31 06:34:30 +08:00
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#include <drm/drm_mipi_dsi.h>
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#include <drm/drm_panel.h>
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struct sharp_nt_panel {
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struct drm_panel base;
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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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bool prepared;
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bool enabled;
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const struct drm_display_mode *mode;
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};
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static inline struct sharp_nt_panel *to_sharp_nt_panel(struct drm_panel *panel)
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{
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return container_of(panel, struct sharp_nt_panel, base);
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}
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static int sharp_nt_panel_init(struct sharp_nt_panel *sharp_nt)
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{
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struct mipi_dsi_device *dsi = sharp_nt->dsi;
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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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return ret;
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msleep(120);
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/* Novatek two-lane operation */
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ret = mipi_dsi_dcs_write(dsi, 0xae, (u8[]){ 0x03 }, 1);
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if (ret < 0)
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return ret;
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/* Set both MCU and RGB I/F to 24bpp */
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ret = mipi_dsi_dcs_set_pixel_format(dsi, MIPI_DCS_PIXEL_FMT_24BIT |
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(MIPI_DCS_PIXEL_FMT_24BIT << 4));
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if (ret < 0)
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return ret;
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return 0;
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}
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static int sharp_nt_panel_on(struct sharp_nt_panel *sharp_nt)
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{
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struct mipi_dsi_device *dsi = sharp_nt->dsi;
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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_on(dsi);
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if (ret < 0)
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return ret;
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return 0;
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}
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static int sharp_nt_panel_off(struct sharp_nt_panel *sharp_nt)
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{
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struct mipi_dsi_device *dsi = sharp_nt->dsi;
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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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return ret;
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ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
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if (ret < 0)
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return ret;
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return 0;
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}
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static int sharp_nt_panel_disable(struct drm_panel *panel)
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{
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struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel);
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if (!sharp_nt->enabled)
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return 0;
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sharp_nt->enabled = false;
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return 0;
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}
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static int sharp_nt_panel_unprepare(struct drm_panel *panel)
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{
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struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel);
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int ret;
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if (!sharp_nt->prepared)
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return 0;
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ret = sharp_nt_panel_off(sharp_nt);
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if (ret < 0) {
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dev_err(panel->dev, "failed to set panel off: %d\n", ret);
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return ret;
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}
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regulator_disable(sharp_nt->supply);
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if (sharp_nt->reset_gpio)
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gpiod_set_value(sharp_nt->reset_gpio, 0);
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sharp_nt->prepared = false;
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return 0;
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}
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static int sharp_nt_panel_prepare(struct drm_panel *panel)
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{
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struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel);
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int ret;
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if (sharp_nt->prepared)
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return 0;
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ret = regulator_enable(sharp_nt->supply);
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if (ret < 0)
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return ret;
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msleep(20);
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if (sharp_nt->reset_gpio) {
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gpiod_set_value(sharp_nt->reset_gpio, 1);
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msleep(1);
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gpiod_set_value(sharp_nt->reset_gpio, 0);
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msleep(1);
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gpiod_set_value(sharp_nt->reset_gpio, 1);
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msleep(10);
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}
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ret = sharp_nt_panel_init(sharp_nt);
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if (ret < 0) {
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dev_err(panel->dev, "failed to init panel: %d\n", ret);
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goto poweroff;
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}
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ret = sharp_nt_panel_on(sharp_nt);
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if (ret < 0) {
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dev_err(panel->dev, "failed to set panel on: %d\n", ret);
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goto poweroff;
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}
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sharp_nt->prepared = true;
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return 0;
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poweroff:
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regulator_disable(sharp_nt->supply);
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if (sharp_nt->reset_gpio)
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gpiod_set_value(sharp_nt->reset_gpio, 0);
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return ret;
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}
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static int sharp_nt_panel_enable(struct drm_panel *panel)
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{
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struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel);
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if (sharp_nt->enabled)
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return 0;
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sharp_nt->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 = 41118,
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.hdisplay = 540,
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.hsync_start = 540 + 48,
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.hsync_end = 540 + 48 + 80,
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.htotal = 540 + 48 + 80 + 32,
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.vdisplay = 960,
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.vsync_start = 960 + 3,
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.vsync_end = 960 + 3 + 15,
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.vtotal = 960 + 3 + 15 + 1,
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};
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2019-12-07 22:03:33 +08:00
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static int sharp_nt_panel_get_modes(struct drm_panel *panel,
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struct drm_connector *connector)
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2015-10-31 06:34:30 +08:00
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{
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struct drm_display_mode *mode;
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2019-12-07 22:03:35 +08:00
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mode = drm_mode_duplicate(connector->dev, &default_mode);
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2015-10-31 06:34:30 +08:00
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if (!mode) {
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2019-12-07 22:03:35 +08:00
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dev_err(panel->dev, "failed to add mode %ux%u@%u\n",
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default_mode.hdisplay, default_mode.vdisplay,
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2020-04-29 01:19:27 +08:00
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drm_mode_vrefresh(&default_mode));
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2015-10-31 06:34:30 +08:00
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return -ENOMEM;
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}
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drm_mode_set_name(mode);
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2019-12-07 22:03:33 +08:00
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drm_mode_probed_add(connector, mode);
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2015-10-31 06:34:30 +08:00
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2019-12-07 22:03:33 +08:00
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connector->display_info.width_mm = 54;
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connector->display_info.height_mm = 95;
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2015-10-31 06:34:30 +08:00
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return 1;
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}
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static const struct drm_panel_funcs sharp_nt_panel_funcs = {
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.disable = sharp_nt_panel_disable,
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.unprepare = sharp_nt_panel_unprepare,
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.prepare = sharp_nt_panel_prepare,
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.enable = sharp_nt_panel_enable,
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.get_modes = sharp_nt_panel_get_modes,
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};
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static int sharp_nt_panel_add(struct sharp_nt_panel *sharp_nt)
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{
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struct device *dev = &sharp_nt->dsi->dev;
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2019-12-07 22:03:49 +08:00
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int ret;
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2015-10-31 06:34:30 +08:00
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sharp_nt->mode = &default_mode;
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sharp_nt->supply = devm_regulator_get(dev, "avdd");
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if (IS_ERR(sharp_nt->supply))
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return PTR_ERR(sharp_nt->supply);
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sharp_nt->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
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if (IS_ERR(sharp_nt->reset_gpio)) {
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dev_err(dev, "cannot get reset-gpios %ld\n",
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PTR_ERR(sharp_nt->reset_gpio));
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sharp_nt->reset_gpio = NULL;
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} else {
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gpiod_set_value(sharp_nt->reset_gpio, 0);
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}
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2019-08-24 03:32:43 +08:00
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drm_panel_init(&sharp_nt->base, &sharp_nt->dsi->dev,
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2019-09-04 21:28:03 +08:00
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&sharp_nt_panel_funcs, DRM_MODE_CONNECTOR_DSI);
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2015-10-31 06:34:30 +08:00
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2019-12-07 22:03:49 +08:00
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ret = drm_panel_of_backlight(&sharp_nt->base);
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if (ret)
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return ret;
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2018-01-25 00:40:51 +08:00
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return drm_panel_add(&sharp_nt->base);
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2015-10-31 06:34:30 +08:00
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}
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static void sharp_nt_panel_del(struct sharp_nt_panel *sharp_nt)
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{
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if (sharp_nt->base.dev)
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drm_panel_remove(&sharp_nt->base);
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}
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static int sharp_nt_panel_probe(struct mipi_dsi_device *dsi)
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{
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struct sharp_nt_panel *sharp_nt;
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int ret;
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dsi->lanes = 2;
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dsi->format = MIPI_DSI_FMT_RGB888;
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dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
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MIPI_DSI_MODE_VIDEO_HSE |
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MIPI_DSI_CLOCK_NON_CONTINUOUS |
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MIPI_DSI_MODE_EOT_PACKET;
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sharp_nt = devm_kzalloc(&dsi->dev, sizeof(*sharp_nt), GFP_KERNEL);
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if (!sharp_nt)
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return -ENOMEM;
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mipi_dsi_set_drvdata(dsi, sharp_nt);
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sharp_nt->dsi = dsi;
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ret = sharp_nt_panel_add(sharp_nt);
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if (ret < 0)
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return ret;
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return mipi_dsi_attach(dsi);
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}
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static int sharp_nt_panel_remove(struct mipi_dsi_device *dsi)
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{
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struct sharp_nt_panel *sharp_nt = mipi_dsi_get_drvdata(dsi);
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int ret;
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2019-12-07 22:03:49 +08:00
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ret = drm_panel_disable(&sharp_nt->base);
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2015-10-31 06:34:30 +08:00
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if (ret < 0)
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dev_err(&dsi->dev, "failed to disable panel: %d\n", 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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sharp_nt_panel_del(sharp_nt);
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return 0;
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}
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static void sharp_nt_panel_shutdown(struct mipi_dsi_device *dsi)
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{
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struct sharp_nt_panel *sharp_nt = mipi_dsi_get_drvdata(dsi);
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2019-12-07 22:03:49 +08:00
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drm_panel_disable(&sharp_nt->base);
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2015-10-31 06:34:30 +08:00
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}
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static const struct of_device_id sharp_nt_of_match[] = {
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{ .compatible = "sharp,ls043t1le01-qhd", },
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{ }
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};
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MODULE_DEVICE_TABLE(of, sharp_nt_of_match);
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static struct mipi_dsi_driver sharp_nt_panel_driver = {
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.driver = {
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.name = "panel-sharp-ls043t1le01-qhd",
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.of_match_table = sharp_nt_of_match,
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},
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.probe = sharp_nt_panel_probe,
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.remove = sharp_nt_panel_remove,
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.shutdown = sharp_nt_panel_shutdown,
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};
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module_mipi_dsi_driver(sharp_nt_panel_driver);
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MODULE_AUTHOR("Werner Johansson <werner.johansson@sonymobile.com>");
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MODULE_DESCRIPTION("Sharp LS043T1LE01 NT35565-based qHD (540x960) video mode panel driver");
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MODULE_LICENSE("GPL v2");
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