drm/panel: Add JDI LT070ME05000 WUXGA DSI Panel
Add support for the JDI LT070ME05000 WUXGA DSI panel used in
Nexus 7 2013 devices.
Programming sequence for the panel is was originally found in the
android-msm-flo-3.4-lollipop-release branch from:
https://android.googlesource.com/kernel/msm.git
And video mode setting is from dsi-panel-jdi-dualmipi1-video.dtsi
file in:
git://codeaurora.org/kernel/msm-3.10.git LNX.LA.3.6_rb1.27
Cc: Archit Taneja <archit.taneja@gmail.com>
Cc: Rob Clark <robdclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Emil Velikov <emil.l.velikov@gmail.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: David Airlie <airlied@linux.ie>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Vinay Simha BN <simhavcs@gmail.com>
Tested-by: John Stultz <john.stultz@linaro.org>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Vinay Simha BN
Thierry Reding
parent
cc4b13dd6d
commit
c96f566273
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@ -18,6 +18,17 @@ 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_JDI_LT070ME05000
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tristate "JDI LT070ME05000 WUXGA DSI 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 JDI DSI video mode
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panel as found in Google Nexus 7 (2013) devices.
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The panel has a 1200(RGB)×1920 (WUXGA) resolution and uses
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24 bit per pixel.
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config DRM_PANEL_SAMSUNG_LD9040
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tristate "Samsung LD9040 RGB/SPI panel"
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depends on OF && SPI
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@ -1,4 +1,5 @@
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obj-$(CONFIG_DRM_PANEL_SIMPLE) += panel-simple.o
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obj-$(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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obj-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.o
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@ -0,0 +1,532 @@
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/*
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* Copyright (C) 2016 InforceComputing
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* Author: Vinay Simha BN <simhavcs@gmail.com>
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*
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* Copyright (C) 2016 Linaro Ltd
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* Author: Sumit Semwal <sumit.semwal@linaro.org>
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*
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* From internet archives, the panel for Nexus 7 2nd Gen, 2013 model is a
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* JDI model LT070ME05000, and its data sheet is at:
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* http://panelone.net/en/7-0-inch/JDI_LT070ME05000_7.0_inch-datasheet
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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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static const char * const regulator_names[] = {
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"vddp",
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"iovcc"
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};
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struct jdi_panel {
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struct drm_panel base;
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struct mipi_dsi_device *dsi;
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struct regulator_bulk_data supplies[ARRAY_SIZE(regulator_names)];
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struct gpio_desc *enable_gpio;
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struct gpio_desc *reset_gpio;
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struct gpio_desc *dcdc_en_gpio;
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struct backlight_device *backlight;
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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 jdi_panel *to_jdi_panel(struct drm_panel *panel)
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{
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return container_of(panel, struct jdi_panel, base);
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}
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static int jdi_panel_init(struct jdi_panel *jdi)
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{
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struct mipi_dsi_device *dsi = jdi->dsi;
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struct device *dev = &jdi->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_soft_reset(dsi);
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if (ret < 0)
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return ret;
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usleep_range(10000, 20000);
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ret = mipi_dsi_dcs_set_pixel_format(dsi, MIPI_DCS_PIXEL_FMT_24BIT << 4);
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if (ret < 0) {
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dev_err(dev, "failed to set pixel format: %d\n", ret);
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return ret;
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}
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ret = mipi_dsi_dcs_set_column_address(dsi, 0, jdi->mode->hdisplay - 1);
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if (ret < 0) {
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dev_err(dev, "failed to set column address: %d\n", ret);
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return ret;
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}
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ret = mipi_dsi_dcs_set_page_address(dsi, 0, jdi->mode->vdisplay - 1);
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if (ret < 0) {
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dev_err(dev, "failed to set page address: %d\n", ret);
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return ret;
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}
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/*
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* BIT(5) BCTRL = 1 Backlight Control Block On, Brightness registers
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* are active
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* BIT(3) BL = 1 Backlight Control On
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* BIT(2) DD = 0 Display Dimming is Off
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*/
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ret = mipi_dsi_dcs_write(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY,
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(u8[]){ 0x24 }, 1);
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if (ret < 0) {
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dev_err(dev, "failed to write control display: %d\n", ret);
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return ret;
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}
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/* CABC off */
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ret = mipi_dsi_dcs_write(dsi, MIPI_DCS_WRITE_POWER_SAVE,
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(u8[]){ 0x00 }, 1);
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if (ret < 0) {
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dev_err(dev, "failed to set cabc off: %d\n", ret);
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return ret;
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}
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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 set exit sleep mode: %d\n", ret);
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return ret;
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}
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msleep(120);
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ret = mipi_dsi_generic_write(dsi, (u8[]){0xB0, 0x00}, 2);
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if (ret < 0) {
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dev_err(dev, "failed to set mcap: %d\n", ret);
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return ret;
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}
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mdelay(10);
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/* Interface setting, video mode */
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ret = mipi_dsi_generic_write(dsi, (u8[])
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{0xB3, 0x26, 0x08, 0x00, 0x20, 0x00}, 6);
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if (ret < 0) {
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dev_err(dev, "failed to set display interface setting: %d\n"
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, ret);
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return ret;
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}
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mdelay(20);
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ret = mipi_dsi_generic_write(dsi, (u8[]){0xB0, 0x03}, 2);
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if (ret < 0) {
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dev_err(dev, "failed to set default values for mcap: %d\n"
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, 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 jdi_panel_on(struct jdi_panel *jdi)
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{
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struct mipi_dsi_device *dsi = jdi->dsi;
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struct device *dev = &jdi->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_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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static void jdi_panel_off(struct jdi_panel *jdi)
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{
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struct mipi_dsi_device *dsi = jdi->dsi;
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struct device *dev = &jdi->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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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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msleep(100);
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}
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static int jdi_panel_disable(struct drm_panel *panel)
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{
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struct jdi_panel *jdi = to_jdi_panel(panel);
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if (!jdi->enabled)
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return 0;
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jdi->backlight->props.power = FB_BLANK_POWERDOWN;
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backlight_update_status(jdi->backlight);
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jdi->enabled = false;
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return 0;
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}
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static int jdi_panel_unprepare(struct drm_panel *panel)
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{
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struct jdi_panel *jdi = to_jdi_panel(panel);
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struct device *dev = &jdi->dsi->dev;
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int ret;
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if (!jdi->prepared)
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return 0;
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jdi_panel_off(jdi);
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ret = regulator_bulk_disable(ARRAY_SIZE(jdi->supplies), jdi->supplies);
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if (ret < 0)
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dev_err(dev, "regulator disable failed, %d\n", ret);
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gpiod_set_value(jdi->enable_gpio, 0);
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gpiod_set_value(jdi->reset_gpio, 1);
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gpiod_set_value(jdi->dcdc_en_gpio, 0);
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jdi->prepared = false;
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return 0;
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}
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static int jdi_panel_prepare(struct drm_panel *panel)
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{
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struct jdi_panel *jdi = to_jdi_panel(panel);
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struct device *dev = &jdi->dsi->dev;
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int ret;
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if (jdi->prepared)
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return 0;
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ret = regulator_bulk_enable(ARRAY_SIZE(jdi->supplies), jdi->supplies);
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if (ret < 0) {
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dev_err(dev, "regulator enable failed, %d\n", ret);
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return ret;
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}
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msleep(20);
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gpiod_set_value(jdi->dcdc_en_gpio, 1);
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usleep_range(10, 20);
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gpiod_set_value(jdi->reset_gpio, 0);
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usleep_range(10, 20);
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gpiod_set_value(jdi->enable_gpio, 1);
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usleep_range(10, 20);
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ret = jdi_panel_init(jdi);
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if (ret < 0) {
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dev_err(dev, "failed to init panel: %d\n", ret);
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goto poweroff;
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}
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ret = jdi_panel_on(jdi);
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if (ret < 0) {
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dev_err(dev, "failed to set panel on: %d\n", ret);
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goto poweroff;
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}
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jdi->prepared = true;
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return 0;
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poweroff:
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ret = regulator_bulk_disable(ARRAY_SIZE(jdi->supplies), jdi->supplies);
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if (ret < 0)
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dev_err(dev, "regulator disable failed, %d\n", ret);
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gpiod_set_value(jdi->enable_gpio, 0);
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gpiod_set_value(jdi->reset_gpio, 1);
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gpiod_set_value(jdi->dcdc_en_gpio, 0);
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return ret;
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}
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static int jdi_panel_enable(struct drm_panel *panel)
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{
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struct jdi_panel *jdi = to_jdi_panel(panel);
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if (jdi->enabled)
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return 0;
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jdi->backlight->props.power = FB_BLANK_UNBLANK;
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backlight_update_status(jdi->backlight);
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jdi->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 = 155493,
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.hdisplay = 1200,
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.hsync_start = 1200 + 48,
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.hsync_end = 1200 + 48 + 32,
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.htotal = 1200 + 48 + 32 + 60,
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.vdisplay = 1920,
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.vsync_start = 1920 + 3,
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.vsync_end = 1920 + 3 + 5,
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.vtotal = 1920 + 3 + 5 + 6,
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.vrefresh = 60,
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.flags = 0,
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};
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static int jdi_panel_get_modes(struct drm_panel *panel)
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{
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struct drm_display_mode *mode;
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struct jdi_panel *jdi = to_jdi_panel(panel);
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struct device *dev = &jdi->dsi->dev;
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mode = drm_mode_duplicate(panel->drm, &default_mode);
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if (!mode) {
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dev_err(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 = 95;
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panel->connector->display_info.height_mm = 151;
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return 1;
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}
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static int dsi_dcs_bl_get_brightness(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 ret;
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u16 brightness = bl->props.brightness;
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dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
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ret = mipi_dsi_dcs_get_display_brightness(dsi, &brightness);
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if (ret < 0)
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return ret;
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dsi->mode_flags |= MIPI_DSI_MODE_LPM;
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return brightness & 0xff;
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}
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static int dsi_dcs_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 ret;
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dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
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ret = mipi_dsi_dcs_set_display_brightness(dsi, bl->props.brightness);
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if (ret < 0)
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return ret;
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dsi->mode_flags |= MIPI_DSI_MODE_LPM;
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return 0;
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}
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static const struct backlight_ops dsi_bl_ops = {
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.update_status = dsi_dcs_bl_update_status,
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.get_brightness = dsi_dcs_bl_get_brightness,
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};
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static struct backlight_device *
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drm_panel_create_dsi_backlight(struct mipi_dsi_device *dsi)
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{
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struct device *dev = &dsi->dev;
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struct backlight_properties props;
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memset(&props, 0, sizeof(props));
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props.type = BACKLIGHT_RAW;
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props.brightness = 255;
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props.max_brightness = 255;
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return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
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&dsi_bl_ops, &props);
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}
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static const struct drm_panel_funcs jdi_panel_funcs = {
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.disable = jdi_panel_disable,
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.unprepare = jdi_panel_unprepare,
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.prepare = jdi_panel_prepare,
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.enable = jdi_panel_enable,
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.get_modes = jdi_panel_get_modes,
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};
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static const struct of_device_id jdi_of_match[] = {
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{ .compatible = "jdi,lt070me05000", },
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{ }
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};
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MODULE_DEVICE_TABLE(of, jdi_of_match);
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static int jdi_panel_add(struct jdi_panel *jdi)
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{
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struct device *dev = &jdi->dsi->dev;
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int ret;
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unsigned int i;
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jdi->mode = &default_mode;
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for (i = 0; i < ARRAY_SIZE(jdi->supplies); i++)
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jdi->supplies[i].supply = regulator_names[i];
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ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(jdi->supplies),
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jdi->supplies);
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if (ret < 0) {
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dev_err(dev, "failed to init regulator, ret=%d\n", ret);
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return ret;
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}
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jdi->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);
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if (IS_ERR(jdi->enable_gpio)) {
|
||||
ret = PTR_ERR(jdi->enable_gpio);
|
||||
dev_err(dev, "cannot get enable-gpio %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
jdi->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
|
||||
if (IS_ERR(jdi->reset_gpio)) {
|
||||
ret = PTR_ERR(jdi->reset_gpio);
|
||||
dev_err(dev, "cannot get reset-gpios %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
jdi->dcdc_en_gpio = devm_gpiod_get(dev, "dcdc-en", GPIOD_OUT_LOW);
|
||||
if (IS_ERR(jdi->dcdc_en_gpio)) {
|
||||
ret = PTR_ERR(jdi->dcdc_en_gpio);
|
||||
dev_err(dev, "cannot get dcdc-en-gpio %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
jdi->backlight = drm_panel_create_dsi_backlight(jdi->dsi);
|
||||
if (IS_ERR(jdi->backlight)) {
|
||||
ret = PTR_ERR(jdi->backlight);
|
||||
dev_err(dev, "failed to register backlight %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
drm_panel_init(&jdi->base);
|
||||
jdi->base.funcs = &jdi_panel_funcs;
|
||||
jdi->base.dev = &jdi->dsi->dev;
|
||||
|
||||
ret = drm_panel_add(&jdi->base);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void jdi_panel_del(struct jdi_panel *jdi)
|
||||
{
|
||||
if (jdi->base.dev)
|
||||
drm_panel_remove(&jdi->base);
|
||||
}
|
||||
|
||||
static int jdi_panel_probe(struct mipi_dsi_device *dsi)
|
||||
{
|
||||
struct jdi_panel *jdi;
|
||||
int ret;
|
||||
|
||||
dsi->lanes = 4;
|
||||
dsi->format = MIPI_DSI_FMT_RGB888;
|
||||
dsi->mode_flags = MIPI_DSI_MODE_VIDEO_HSE | MIPI_DSI_MODE_VIDEO |
|
||||
MIPI_DSI_CLOCK_NON_CONTINUOUS;
|
||||
|
||||
jdi = devm_kzalloc(&dsi->dev, sizeof(*jdi), GFP_KERNEL);
|
||||
if (!jdi)
|
||||
return -ENOMEM;
|
||||
|
||||
mipi_dsi_set_drvdata(dsi, jdi);
|
||||
|
||||
jdi->dsi = dsi;
|
||||
|
||||
ret = jdi_panel_add(jdi);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
return mipi_dsi_attach(dsi);
|
||||
}
|
||||
|
||||
static int jdi_panel_remove(struct mipi_dsi_device *dsi)
|
||||
{
|
||||
struct jdi_panel *jdi = mipi_dsi_get_drvdata(dsi);
|
||||
int ret;
|
||||
|
||||
ret = jdi_panel_disable(&jdi->base);
|
||||
if (ret < 0)
|
||||
dev_err(&dsi->dev, "failed to disable panel: %d\n", ret);
|
||||
|
||||
ret = mipi_dsi_detach(dsi);
|
||||
if (ret < 0)
|
||||
dev_err(&dsi->dev, "failed to detach from DSI host: %d\n",
|
||||
ret);
|
||||
|
||||
drm_panel_detach(&jdi->base);
|
||||
jdi_panel_del(jdi);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void jdi_panel_shutdown(struct mipi_dsi_device *dsi)
|
||||
{
|
||||
struct jdi_panel *jdi = mipi_dsi_get_drvdata(dsi);
|
||||
|
||||
jdi_panel_disable(&jdi->base);
|
||||
}
|
||||
|
||||
static struct mipi_dsi_driver jdi_panel_driver = {
|
||||
.driver = {
|
||||
.name = "panel-jdi-lt070me05000",
|
||||
.of_match_table = jdi_of_match,
|
||||
},
|
||||
.probe = jdi_panel_probe,
|
||||
.remove = jdi_panel_remove,
|
||||
.shutdown = jdi_panel_shutdown,
|
||||
};
|
||||
module_mipi_dsi_driver(jdi_panel_driver);
|
||||
|
||||
MODULE_AUTHOR("Sumit Semwal <sumit.semwal@linaro.org>");
|
||||
MODULE_AUTHOR("Vinay Simha BN <simhavcs@gmail.com>");
|
||||
MODULE_DESCRIPTION("JDI LT070ME05000 WUXGA");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
Loading…
Reference in New Issue