mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-16 12:16:43 +07:00
38992c57c9
Remove all drm_panel_detach() calls from all panel drivers and update the kerneldoc for drm_panel_detach(). Setting the connector and drm to NULL when the DRM panel device is going away hardly serves any purpose. Usually the whole memory structure is freed right after the remove call. However, calling the detach function from the master DRM device, and setting the connector pointer to NULL, has the logic of marking the panel again as available for another DRM master to attach. The usual situation would be the same DRM master device binding again. Signed-off-by: Jyri Sarha <jsarha@ti.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Thierry Reding <treding@nvidia.com> Link: https://patchwork.freedesktop.org/patch/msgid/464b8d330d6b4c94cfb5aad2ca9ea7eb2c52d934.1524727888.git.jsarha@ti.com
362 lines
8.1 KiB
C
362 lines
8.1 KiB
C
/*
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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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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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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 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 backlight_device *backlight;
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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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backlight_disable(sharp_nt->backlight);
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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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backlight_enable(sharp_nt->backlight);
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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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.vrefresh = 60,
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};
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static int sharp_nt_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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dev_err(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 = 54;
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panel->connector->display_info.height_mm = 95;
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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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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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sharp_nt->backlight = devm_of_find_backlight(dev);
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if (IS_ERR(sharp_nt->backlight))
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return PTR_ERR(sharp_nt->backlight);
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drm_panel_init(&sharp_nt->base);
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sharp_nt->base.funcs = &sharp_nt_panel_funcs;
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sharp_nt->base.dev = &sharp_nt->dsi->dev;
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return drm_panel_add(&sharp_nt->base);
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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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ret = sharp_nt_panel_disable(&sharp_nt->base);
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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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sharp_nt_panel_disable(&sharp_nt->base);
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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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