mirror of https://gitee.com/openkylin/linux.git
drm/panel: add Innolux P079ZCA panel driver
Support Innolux P079ZCA 7.85" 768x1024 TFT LCD panel, it is a MIPI DSI panel. Signed-off-by: Chris Zhong <zyw@rock-chips.com> Reviewed-by: Sean Paul <seanpaul@chromium.org> Tested-by: Brian Norris <briannorris@chromium.org> Signed-off-by: Thierry Reding <treding@nvidia.com> Link: http://patchwork.freedesktop.org/patch/msgid/1490316692-20506-2-git-send-email-zyw@rock-chips.com
This commit is contained in:
Chris Zhong
Thierry Reding
parent
ead9d5b176
commit
14c8f2e9f8
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@ -28,6 +28,17 @@ config DRM_PANEL_SIMPLE
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that it can be automatically turned off when the panel goes into a
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low power state.
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config DRM_PANEL_INNOLUX_P079ZCA
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tristate "Innolux P079ZCA panel"
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depends on OF
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depends on DRM_MIPI_DSI
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depends on BACKLIGHT_CLASS_DEVICE
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help
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Say Y here if you want to enable support for Innolux P079ZCA
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TFT-LCD modules. The panel has a 1024x768 resolution and uses
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24 bit RGB per pixel. It provides a MIPI DSI interface to
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the host and has a built-in LED backlight.
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config DRM_PANEL_JDI_LT070ME05000
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tristate "JDI LT070ME05000 WUXGA DSI panel"
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depends on OF
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@ -1,5 +1,6 @@
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obj-$(CONFIG_DRM_PANEL_LVDS) += panel-lvds.o
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obj-$(CONFIG_DRM_PANEL_SIMPLE) += panel-simple.o
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obj-$(CONFIG_DRM_PANEL_INNOLUX_P079ZCA) += panel-innolux-p079zca.o
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obj-$(CONFIG_DRM_PANEL_JDI_LT070ME05000) += panel-jdi-lt070me05000.o
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obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o
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obj-$(CONFIG_DRM_PANEL_PANASONIC_VVX10F034N00) += panel-panasonic-vvx10f034n00.o
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@ -0,0 +1,340 @@
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/*
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* Copyright (c) 2017, Fuzhou Rockchip Electronics Co., Ltd
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/backlight.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/drmP.h>
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#include <drm/drm_crtc.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 <video/mipi_display.h>
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struct innolux_panel {
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struct drm_panel base;
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struct mipi_dsi_device *link;
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struct backlight_device *backlight;
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struct regulator *supply;
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struct gpio_desc *enable_gpio;
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bool prepared;
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bool enabled;
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};
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static inline struct innolux_panel *to_innolux_panel(struct drm_panel *panel)
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{
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return container_of(panel, struct innolux_panel, base);
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}
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static int innolux_panel_disable(struct drm_panel *panel)
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{
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struct innolux_panel *innolux = to_innolux_panel(panel);
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int err;
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if (!innolux->enabled)
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return 0;
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innolux->backlight->props.power = FB_BLANK_POWERDOWN;
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backlight_update_status(innolux->backlight);
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err = mipi_dsi_dcs_set_display_off(innolux->link);
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if (err < 0)
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DRM_DEV_ERROR(panel->dev, "failed to set display off: %d\n",
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err);
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innolux->enabled = false;
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return 0;
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}
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static int innolux_panel_unprepare(struct drm_panel *panel)
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{
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struct innolux_panel *innolux = to_innolux_panel(panel);
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int err;
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if (!innolux->prepared)
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return 0;
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err = mipi_dsi_dcs_enter_sleep_mode(innolux->link);
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if (err < 0) {
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DRM_DEV_ERROR(panel->dev, "failed to enter sleep mode: %d\n",
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err);
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return err;
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}
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gpiod_set_value_cansleep(innolux->enable_gpio, 0);
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/* T8: 80ms - 1000ms */
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msleep(80);
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err = regulator_disable(innolux->supply);
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if (err < 0)
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return err;
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innolux->prepared = false;
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return 0;
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}
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static int innolux_panel_prepare(struct drm_panel *panel)
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{
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struct innolux_panel *innolux = to_innolux_panel(panel);
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int err, regulator_err;
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if (innolux->prepared)
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return 0;
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gpiod_set_value_cansleep(innolux->enable_gpio, 0);
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err = regulator_enable(innolux->supply);
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if (err < 0)
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return err;
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/* T2: 15ms - 1000ms */
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usleep_range(15000, 16000);
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gpiod_set_value_cansleep(innolux->enable_gpio, 1);
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/* T4: 15ms - 1000ms */
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usleep_range(15000, 16000);
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err = mipi_dsi_dcs_exit_sleep_mode(innolux->link);
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if (err < 0) {
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DRM_DEV_ERROR(panel->dev, "failed to exit sleep mode: %d\n",
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err);
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goto poweroff;
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}
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/* T6: 120ms - 1000ms*/
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msleep(120);
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err = mipi_dsi_dcs_set_display_on(innolux->link);
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if (err < 0) {
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DRM_DEV_ERROR(panel->dev, "failed to set display on: %d\n",
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err);
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goto poweroff;
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}
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/* T7: 5ms */
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usleep_range(5000, 6000);
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innolux->prepared = true;
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return 0;
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poweroff:
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regulator_err = regulator_disable(innolux->supply);
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if (regulator_err)
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DRM_DEV_ERROR(panel->dev, "failed to disable regulator: %d\n",
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regulator_err);
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gpiod_set_value_cansleep(innolux->enable_gpio, 0);
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return err;
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}
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static int innolux_panel_enable(struct drm_panel *panel)
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{
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struct innolux_panel *innolux = to_innolux_panel(panel);
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int ret;
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if (innolux->enabled)
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return 0;
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innolux->backlight->props.power = FB_BLANK_UNBLANK;
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ret = backlight_update_status(innolux->backlight);
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if (ret) {
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DRM_DEV_ERROR(panel->drm->dev,
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"Failed to enable backlight %d\n", ret);
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return ret;
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}
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innolux->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 = 56900,
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.hdisplay = 768,
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.hsync_start = 768 + 40,
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.hsync_end = 768 + 40 + 40,
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.htotal = 768 + 40 + 40 + 40,
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.vdisplay = 1024,
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.vsync_start = 1024 + 20,
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.vsync_end = 1024 + 20 + 4,
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.vtotal = 1024 + 20 + 4 + 20,
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.vrefresh = 60,
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};
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static int innolux_panel_get_modes(struct drm_panel *panel)
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{
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struct drm_display_mode *mode;
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mode = drm_mode_duplicate(panel->drm, &default_mode);
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if (!mode) {
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DRM_DEV_ERROR(panel->drm->dev, "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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drm_mode_probed_add(panel->connector, mode);
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panel->connector->display_info.width_mm = 120;
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panel->connector->display_info.height_mm = 160;
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panel->connector->display_info.bpc = 8;
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return 1;
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}
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static const struct drm_panel_funcs innolux_panel_funcs = {
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.disable = innolux_panel_disable,
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.unprepare = innolux_panel_unprepare,
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.prepare = innolux_panel_prepare,
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.enable = innolux_panel_enable,
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.get_modes = innolux_panel_get_modes,
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};
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static const struct of_device_id innolux_of_match[] = {
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{ .compatible = "innolux,p079zca", },
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{ }
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};
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MODULE_DEVICE_TABLE(of, innolux_of_match);
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static int innolux_panel_add(struct innolux_panel *innolux)
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{
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struct device *dev = &innolux->link->dev;
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struct device_node *np;
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int err;
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innolux->supply = devm_regulator_get(dev, "power");
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if (IS_ERR(innolux->supply))
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return PTR_ERR(innolux->supply);
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innolux->enable_gpio = devm_gpiod_get_optional(dev, "enable",
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GPIOD_OUT_HIGH);
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if (IS_ERR(innolux->enable_gpio)) {
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err = PTR_ERR(innolux->enable_gpio);
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dev_dbg(dev, "failed to get enable gpio: %d\n", err);
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innolux->enable_gpio = NULL;
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}
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np = of_parse_phandle(dev->of_node, "backlight", 0);
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if (np) {
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innolux->backlight = of_find_backlight_by_node(np);
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of_node_put(np);
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if (!innolux->backlight)
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return -EPROBE_DEFER;
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}
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drm_panel_init(&innolux->base);
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innolux->base.funcs = &innolux_panel_funcs;
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innolux->base.dev = &innolux->link->dev;
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err = drm_panel_add(&innolux->base);
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if (err < 0)
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goto put_backlight;
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return 0;
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put_backlight:
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put_device(&innolux->backlight->dev);
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return err;
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}
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static void innolux_panel_del(struct innolux_panel *innolux)
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{
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if (innolux->base.dev)
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drm_panel_remove(&innolux->base);
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put_device(&innolux->backlight->dev);
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}
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static int innolux_panel_probe(struct mipi_dsi_device *dsi)
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{
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struct innolux_panel *innolux;
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int err;
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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_SYNC_PULSE |
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MIPI_DSI_MODE_LPM;
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innolux = devm_kzalloc(&dsi->dev, sizeof(*innolux), GFP_KERNEL);
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if (!innolux)
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return -ENOMEM;
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mipi_dsi_set_drvdata(dsi, innolux);
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innolux->link = dsi;
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err = innolux_panel_add(innolux);
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if (err < 0)
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return err;
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err = mipi_dsi_attach(dsi);
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return err;
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}
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static int innolux_panel_remove(struct mipi_dsi_device *dsi)
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{
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struct innolux_panel *innolux = mipi_dsi_get_drvdata(dsi);
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int err;
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err = innolux_panel_unprepare(&innolux->base);
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if (err < 0)
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DRM_DEV_ERROR(&dsi->dev, "failed to unprepare panel: %d\n",
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err);
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err = innolux_panel_disable(&innolux->base);
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if (err < 0)
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DRM_DEV_ERROR(&dsi->dev, "failed to disable panel: %d\n", err);
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err = mipi_dsi_detach(dsi);
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if (err < 0)
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DRM_DEV_ERROR(&dsi->dev, "failed to detach from DSI host: %d\n",
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err);
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drm_panel_detach(&innolux->base);
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innolux_panel_del(innolux);
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return 0;
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}
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static void innolux_panel_shutdown(struct mipi_dsi_device *dsi)
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{
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struct innolux_panel *innolux = mipi_dsi_get_drvdata(dsi);
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innolux_panel_unprepare(&innolux->base);
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innolux_panel_disable(&innolux->base);
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}
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static struct mipi_dsi_driver innolux_panel_driver = {
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.driver = {
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.name = "panel-innolux-p079zca",
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.of_match_table = innolux_of_match,
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},
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.probe = innolux_panel_probe,
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.remove = innolux_panel_remove,
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.shutdown = innolux_panel_shutdown,
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};
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module_mipi_dsi_driver(innolux_panel_driver);
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MODULE_AUTHOR("Chris Zhong <zyw@rock-chips.com>");
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MODULE_DESCRIPTION("Innolux P079ZCA panel driver");
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MODULE_LICENSE("GPL v2");
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