drm/panel: add panel driver for Leadtek LTK050H3146W
The LTK050H3146W is 5.0" 720x1280 DSI display. There are two variants with essentially the same name, LTK050H3146W and LTK050H3146W-A2. They differ in their init sequence and mode details. changes in v2: - add display variants changes in v3: - fixed indentation and artifacts found by Sam Signed-off-by: Heiko Stuebner <heiko.stuebner@theobroma-systems.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200408085317.2624599-2-heiko@sntech.de
This commit is contained in:
Heiko Stuebner
Sam Ravnborg
parent
17434fbaa9
commit
6ea4383b92
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@ -137,6 +137,17 @@ config DRM_PANEL_KINGDISPLAY_KD097D04
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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_LEADTEK_LTK050H3146W
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tristate "Leadtek LTK050H3146W 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 Leadtek LTK050H3146W
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TFT-LCD modules. The panel has a 720x1280 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_LEADTEK_LTK500HD1829
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tristate "Leadtek LTK500HD1829 panel"
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depends on OF
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@ -12,6 +12,7 @@ obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9881C) += panel-ilitek-ili9881c.o
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obj-$(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_KINGDISPLAY_KD097D04) += panel-kingdisplay-kd097d04.o
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obj-$(CONFIG_DRM_PANEL_LEADTEK_LTK050H3146W) += panel-leadtek-ltk050h3146w.o
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obj-$(CONFIG_DRM_PANEL_LEADTEK_LTK500HD1829) += panel-leadtek-ltk500hd1829.o
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obj-$(CONFIG_DRM_PANEL_LG_LB035Q02) += panel-lg-lb035q02.o
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obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o
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@ -0,0 +1,691 @@
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2020 Theobroma Systems Design und Consulting GmbH
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*/
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#include <linux/delay.h>
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#include <linux/gpio/consumer.h>
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#include <linux/media-bus-format.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <linux/regulator/consumer.h>
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#include <video/display_timing.h>
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#include <video/mipi_display.h>
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#include <drm/drm_mipi_dsi.h>
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#include <drm/drm_modes.h>
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#include <drm/drm_panel.h>
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#include <drm/drm_print.h>
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struct ltk050h3146w_cmd {
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char cmd;
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char data;
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};
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struct ltk050h3146w;
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struct ltk050h3146w_desc {
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const struct drm_display_mode *mode;
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int (*init)(struct ltk050h3146w *ctx);
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};
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struct ltk050h3146w {
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struct device *dev;
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struct drm_panel panel;
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struct gpio_desc *reset_gpio;
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struct regulator *vci;
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struct regulator *iovcc;
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const struct ltk050h3146w_desc *panel_desc;
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bool prepared;
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};
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static const struct ltk050h3146w_cmd page1_cmds[] = {
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{ 0x22, 0x0A }, /* BGR SS GS */
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{ 0x31, 0x00 }, /* column inversion */
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{ 0x53, 0xA2 }, /* VCOM1 */
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{ 0x55, 0xA2 }, /* VCOM2 */
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{ 0x50, 0x81 }, /* VREG1OUT=5V */
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{ 0x51, 0x85 }, /* VREG2OUT=-5V */
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{ 0x62, 0x0D }, /* EQT Time setting */
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/*
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* The vendor init selected page 1 here _again_
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* Is this supposed to be page 2?
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*/
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{ 0xA0, 0x00 },
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{ 0xA1, 0x1A },
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{ 0xA2, 0x28 },
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{ 0xA3, 0x13 },
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{ 0xA4, 0x16 },
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{ 0xA5, 0x29 },
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{ 0xA6, 0x1D },
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{ 0xA7, 0x1E },
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{ 0xA8, 0x84 },
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{ 0xA9, 0x1C },
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{ 0xAA, 0x28 },
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{ 0xAB, 0x75 },
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{ 0xAC, 0x1A },
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{ 0xAD, 0x19 },
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{ 0xAE, 0x4D },
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{ 0xAF, 0x22 },
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{ 0xB0, 0x28 },
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{ 0xB1, 0x54 },
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{ 0xB2, 0x66 },
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{ 0xB3, 0x39 },
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{ 0xC0, 0x00 },
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{ 0xC1, 0x1A },
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{ 0xC2, 0x28 },
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{ 0xC3, 0x13 },
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{ 0xC4, 0x16 },
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{ 0xC5, 0x29 },
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{ 0xC6, 0x1D },
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{ 0xC7, 0x1E },
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{ 0xC8, 0x84 },
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{ 0xC9, 0x1C },
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{ 0xCA, 0x28 },
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{ 0xCB, 0x75 },
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{ 0xCC, 0x1A },
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{ 0xCD, 0x19 },
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{ 0xCE, 0x4D },
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{ 0xCF, 0x22 },
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{ 0xD0, 0x28 },
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{ 0xD1, 0x54 },
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{ 0xD2, 0x66 },
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{ 0xD3, 0x39 },
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};
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static const struct ltk050h3146w_cmd page3_cmds[] = {
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{ 0x01, 0x00 },
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{ 0x02, 0x00 },
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{ 0x03, 0x73 },
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{ 0x04, 0x00 },
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{ 0x05, 0x00 },
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{ 0x06, 0x0a },
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{ 0x07, 0x00 },
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{ 0x08, 0x00 },
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{ 0x09, 0x01 },
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{ 0x0a, 0x00 },
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{ 0x0b, 0x00 },
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{ 0x0c, 0x01 },
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{ 0x0d, 0x00 },
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{ 0x0e, 0x00 },
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{ 0x0f, 0x1d },
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{ 0x10, 0x1d },
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{ 0x11, 0x00 },
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{ 0x12, 0x00 },
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{ 0x13, 0x00 },
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{ 0x14, 0x00 },
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{ 0x15, 0x00 },
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{ 0x16, 0x00 },
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{ 0x17, 0x00 },
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{ 0x18, 0x00 },
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{ 0x19, 0x00 },
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{ 0x1a, 0x00 },
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{ 0x1b, 0x00 },
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{ 0x1c, 0x00 },
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{ 0x1d, 0x00 },
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{ 0x1e, 0x40 },
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{ 0x1f, 0x80 },
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{ 0x20, 0x06 },
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{ 0x21, 0x02 },
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{ 0x22, 0x00 },
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{ 0x23, 0x00 },
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{ 0x24, 0x00 },
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{ 0x25, 0x00 },
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{ 0x26, 0x00 },
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{ 0x27, 0x00 },
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{ 0x28, 0x33 },
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{ 0x29, 0x03 },
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{ 0x2a, 0x00 },
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{ 0x2b, 0x00 },
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{ 0x2c, 0x00 },
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{ 0x2d, 0x00 },
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{ 0x2e, 0x00 },
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{ 0x2f, 0x00 },
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{ 0x30, 0x00 },
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{ 0x31, 0x00 },
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{ 0x32, 0x00 },
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{ 0x33, 0x00 },
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{ 0x34, 0x04 },
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{ 0x35, 0x00 },
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{ 0x36, 0x00 },
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{ 0x37, 0x00 },
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{ 0x38, 0x3C },
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{ 0x39, 0x35 },
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{ 0x3A, 0x01 },
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{ 0x3B, 0x40 },
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{ 0x3C, 0x00 },
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{ 0x3D, 0x01 },
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{ 0x3E, 0x00 },
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{ 0x3F, 0x00 },
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{ 0x40, 0x00 },
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{ 0x41, 0x88 },
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{ 0x42, 0x00 },
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{ 0x43, 0x00 },
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{ 0x44, 0x1F },
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{ 0x50, 0x01 },
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{ 0x51, 0x23 },
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{ 0x52, 0x45 },
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{ 0x53, 0x67 },
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{ 0x54, 0x89 },
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{ 0x55, 0xab },
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{ 0x56, 0x01 },
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{ 0x57, 0x23 },
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{ 0x58, 0x45 },
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{ 0x59, 0x67 },
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{ 0x5a, 0x89 },
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{ 0x5b, 0xab },
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{ 0x5c, 0xcd },
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{ 0x5d, 0xef },
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{ 0x5e, 0x11 },
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{ 0x5f, 0x01 },
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{ 0x60, 0x00 },
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{ 0x61, 0x15 },
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{ 0x62, 0x14 },
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{ 0x63, 0x0E },
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{ 0x64, 0x0F },
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{ 0x65, 0x0C },
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{ 0x66, 0x0D },
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{ 0x67, 0x06 },
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{ 0x68, 0x02 },
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{ 0x69, 0x07 },
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{ 0x6a, 0x02 },
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{ 0x6b, 0x02 },
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{ 0x6c, 0x02 },
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{ 0x6d, 0x02 },
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{ 0x6e, 0x02 },
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{ 0x6f, 0x02 },
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{ 0x70, 0x02 },
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{ 0x71, 0x02 },
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{ 0x72, 0x02 },
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{ 0x73, 0x02 },
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{ 0x74, 0x02 },
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{ 0x75, 0x01 },
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{ 0x76, 0x00 },
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{ 0x77, 0x14 },
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{ 0x78, 0x15 },
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{ 0x79, 0x0E },
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{ 0x7a, 0x0F },
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{ 0x7b, 0x0C },
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{ 0x7c, 0x0D },
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{ 0x7d, 0x06 },
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{ 0x7e, 0x02 },
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{ 0x7f, 0x07 },
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{ 0x80, 0x02 },
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{ 0x81, 0x02 },
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{ 0x82, 0x02 },
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{ 0x83, 0x02 },
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{ 0x84, 0x02 },
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{ 0x85, 0x02 },
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{ 0x86, 0x02 },
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{ 0x87, 0x02 },
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{ 0x88, 0x02 },
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{ 0x89, 0x02 },
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{ 0x8A, 0x02 },
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};
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static const struct ltk050h3146w_cmd page4_cmds[] = {
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{ 0x70, 0x00 },
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{ 0x71, 0x00 },
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{ 0x82, 0x0F }, /* VGH_MOD clamp level=15v */
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{ 0x84, 0x0F }, /* VGH clamp level 15V */
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{ 0x85, 0x0D }, /* VGL clamp level (-10V) */
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{ 0x32, 0xAC },
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{ 0x8C, 0x80 },
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{ 0x3C, 0xF5 },
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{ 0xB5, 0x07 }, /* GAMMA OP */
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{ 0x31, 0x45 }, /* SOURCE OP */
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{ 0x3A, 0x24 }, /* PS_EN OFF */
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{ 0x88, 0x33 }, /* LVD */
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};
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static inline
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struct ltk050h3146w *panel_to_ltk050h3146w(struct drm_panel *panel)
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{
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return container_of(panel, struct ltk050h3146w, panel);
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}
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#define dsi_dcs_write_seq(dsi, cmd, seq...) do { \
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static const u8 d[] = { seq }; \
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int ret; \
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ret = mipi_dsi_dcs_write(dsi, cmd, d, ARRAY_SIZE(d)); \
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if (ret < 0) \
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return ret; \
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} while (0)
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static int ltk050h3146w_init_sequence(struct ltk050h3146w *ctx)
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{
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struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
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int ret;
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/*
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* Init sequence was supplied by the panel vendor without much
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* documentation.
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*/
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dsi_dcs_write_seq(dsi, 0xdf, 0x93, 0x65, 0xf8);
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dsi_dcs_write_seq(dsi, 0xb0, 0x01, 0x03, 0x02, 0x00, 0x64, 0x06,
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0x01);
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dsi_dcs_write_seq(dsi, 0xb2, 0x00, 0xb5);
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dsi_dcs_write_seq(dsi, 0xb3, 0x00, 0xb5);
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dsi_dcs_write_seq(dsi, 0xb7, 0x00, 0xbf, 0x00, 0x00, 0xbf, 0x00);
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dsi_dcs_write_seq(dsi, 0xb9, 0x00, 0xc4, 0x23, 0x07);
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dsi_dcs_write_seq(dsi, 0xbb, 0x02, 0x01, 0x24, 0x00, 0x28, 0x0f,
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0x28, 0x04, 0xcc, 0xcc, 0xcc);
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dsi_dcs_write_seq(dsi, 0xbc, 0x0f, 0x04);
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dsi_dcs_write_seq(dsi, 0xbe, 0x1e, 0xf2);
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dsi_dcs_write_seq(dsi, 0xc0, 0x26, 0x03);
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dsi_dcs_write_seq(dsi, 0xc1, 0x00, 0x12);
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dsi_dcs_write_seq(dsi, 0xc3, 0x04, 0x02, 0x02, 0x76, 0x01, 0x80,
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0x80);
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dsi_dcs_write_seq(dsi, 0xc4, 0x24, 0x80, 0xb4, 0x81, 0x12, 0x0f,
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0x16, 0x00, 0x00);
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dsi_dcs_write_seq(dsi, 0xc8, 0x7f, 0x72, 0x67, 0x5d, 0x5d, 0x50,
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0x56, 0x41, 0x59, 0x57, 0x55, 0x70, 0x5b, 0x5f,
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0x4f, 0x47, 0x38, 0x23, 0x08, 0x7f, 0x72, 0x67,
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0x5d, 0x5d, 0x50, 0x56, 0x41, 0x59, 0x57, 0x55,
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0x70, 0x5b, 0x5f, 0x4f, 0x47, 0x38, 0x23, 0x08);
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dsi_dcs_write_seq(dsi, 0xd0, 0x1e, 0x1f, 0x57, 0x58, 0x48, 0x4a,
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0x44, 0x46, 0x40, 0x1f, 0x42, 0x1f, 0x1f, 0x1f,
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0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f);
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dsi_dcs_write_seq(dsi, 0xd1, 0x1e, 0x1f, 0x57, 0x58, 0x49, 0x4b,
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0x45, 0x47, 0x41, 0x1f, 0x43, 0x1f, 0x1f, 0x1f,
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0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f);
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dsi_dcs_write_seq(dsi, 0xd2, 0x1f, 0x1e, 0x17, 0x18, 0x07, 0x05,
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0x0b, 0x09, 0x03, 0x1f, 0x01, 0x1f, 0x1f, 0x1f,
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0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f);
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dsi_dcs_write_seq(dsi, 0xd3, 0x1f, 0x1e, 0x17, 0x18, 0x06, 0x04,
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0x0a, 0x08, 0x02, 0x1f, 0x00, 0x1f, 0x1f, 0x1f,
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0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f);
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dsi_dcs_write_seq(dsi, 0xd4, 0x00, 0x00, 0x00, 0x0c, 0x06, 0x20,
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0x01, 0x02, 0x00, 0x60, 0x15, 0xb0, 0x30, 0x03,
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0x04, 0x00, 0x60, 0x72, 0x0a, 0x00, 0x60, 0x08);
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dsi_dcs_write_seq(dsi, 0xd5, 0x00, 0x06, 0x06, 0x00, 0x30, 0x00,
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0x00, 0x00, 0x00, 0x00, 0xbc, 0x50, 0x00, 0x05,
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0x21, 0x00, 0x60);
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dsi_dcs_write_seq(dsi, 0xdd, 0x2c, 0xa3, 0x00);
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dsi_dcs_write_seq(dsi, 0xde, 0x02);
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dsi_dcs_write_seq(dsi, 0xb2, 0x32, 0x1c);
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dsi_dcs_write_seq(dsi, 0xb7, 0x3b, 0x70, 0x00, 0x04);
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dsi_dcs_write_seq(dsi, 0xc1, 0x11);
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dsi_dcs_write_seq(dsi, 0xbb, 0x21, 0x22, 0x23, 0x24, 0x36, 0x37);
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dsi_dcs_write_seq(dsi, 0xc2, 0x20, 0x38, 0x1e, 0x84);
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dsi_dcs_write_seq(dsi, 0xde, 0x00);
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ret = mipi_dsi_dcs_set_tear_on(dsi, 1);
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if (ret < 0) {
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DRM_DEV_ERROR(ctx->dev, "failed to set tear on: %d\n",
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ret);
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return ret;
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}
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msleep(60);
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return 0;
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}
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static const struct drm_display_mode ltk050h3146w_mode = {
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.hdisplay = 720,
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.hsync_start = 720 + 42,
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.hsync_end = 720 + 42 + 8,
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.htotal = 720 + 42 + 8 + 42,
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.vdisplay = 1280,
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.vsync_start = 1280 + 12,
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.vsync_end = 1280 + 12 + 4,
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.vtotal = 1280 + 12 + 4 + 18,
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.clock = 64018,
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.width_mm = 62,
|
||||
.height_mm = 110,
|
||||
};
|
||||
|
||||
static const struct ltk050h3146w_desc ltk050h3146w_data = {
|
||||
.mode = <k050h3146w_mode,
|
||||
.init = ltk050h3146w_init_sequence,
|
||||
};
|
||||
|
||||
static int ltk050h3146w_a2_select_page(struct ltk050h3146w *ctx, int page)
|
||||
{
|
||||
struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
|
||||
u8 d[3] = { 0x98, 0x81, page };
|
||||
|
||||
return mipi_dsi_dcs_write(dsi, 0xff, d, ARRAY_SIZE(d));
|
||||
}
|
||||
|
||||
static int ltk050h3146w_a2_write_page(struct ltk050h3146w *ctx, int page,
|
||||
const struct ltk050h3146w_cmd *cmds,
|
||||
int num)
|
||||
{
|
||||
struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
|
||||
int i, ret;
|
||||
|
||||
ret = ltk050h3146w_a2_select_page(ctx, page);
|
||||
if (ret < 0) {
|
||||
DRM_DEV_ERROR(ctx->dev, "failed to select page %d: %d\n",
|
||||
page, ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
for (i = 0; i < num; i++) {
|
||||
ret = mipi_dsi_generic_write(dsi, &cmds[i],
|
||||
sizeof(struct ltk050h3146w_cmd));
|
||||
if (ret < 0) {
|
||||
DRM_DEV_ERROR(ctx->dev,
|
||||
"failed to write page %d init cmds: %d\n",
|
||||
page, ret);
|
||||
return ret;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int ltk050h3146w_a2_init_sequence(struct ltk050h3146w *ctx)
|
||||
{
|
||||
struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
|
||||
int ret;
|
||||
|
||||
/*
|
||||
* Init sequence was supplied by the panel vendor without much
|
||||
* documentation.
|
||||
*/
|
||||
ret = ltk050h3146w_a2_write_page(ctx, 3, page3_cmds,
|
||||
ARRAY_SIZE(page3_cmds));
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = ltk050h3146w_a2_write_page(ctx, 4, page4_cmds,
|
||||
ARRAY_SIZE(page4_cmds));
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = ltk050h3146w_a2_write_page(ctx, 1, page1_cmds,
|
||||
ARRAY_SIZE(page1_cmds));
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = ltk050h3146w_a2_select_page(ctx, 0);
|
||||
if (ret < 0) {
|
||||
DRM_DEV_ERROR(ctx->dev, "failed to select page 0: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* vendor code called this without param, where there should be one */
|
||||
ret = mipi_dsi_dcs_set_tear_on(dsi, 0);
|
||||
if (ret < 0) {
|
||||
DRM_DEV_ERROR(ctx->dev, "failed to set tear on: %d\n",
|
||||
ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
msleep(60);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct drm_display_mode ltk050h3146w_a2_mode = {
|
||||
.hdisplay = 720,
|
||||
.hsync_start = 720 + 42,
|
||||
.hsync_end = 720 + 42 + 10,
|
||||
.htotal = 720 + 42 + 10 + 60,
|
||||
.vdisplay = 1280,
|
||||
.vsync_start = 1280 + 18,
|
||||
.vsync_end = 1280 + 18 + 4,
|
||||
.vtotal = 1280 + 18 + 4 + 12,
|
||||
.clock = 65595,
|
||||
.width_mm = 62,
|
||||
.height_mm = 110,
|
||||
};
|
||||
|
||||
static const struct ltk050h3146w_desc ltk050h3146w_a2_data = {
|
||||
.mode = <k050h3146w_a2_mode,
|
||||
.init = ltk050h3146w_a2_init_sequence,
|
||||
};
|
||||
|
||||
static int ltk050h3146w_unprepare(struct drm_panel *panel)
|
||||
{
|
||||
struct ltk050h3146w *ctx = panel_to_ltk050h3146w(panel);
|
||||
struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
|
||||
int ret;
|
||||
|
||||
if (!ctx->prepared)
|
||||
return 0;
|
||||
|
||||
ret = mipi_dsi_dcs_set_display_off(dsi);
|
||||
if (ret < 0) {
|
||||
DRM_DEV_ERROR(ctx->dev, "failed to set display off: %d\n",
|
||||
ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
mipi_dsi_dcs_enter_sleep_mode(dsi);
|
||||
if (ret < 0) {
|
||||
DRM_DEV_ERROR(ctx->dev, "failed to enter sleep mode: %d\n",
|
||||
ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
regulator_disable(ctx->iovcc);
|
||||
regulator_disable(ctx->vci);
|
||||
|
||||
ctx->prepared = false;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int ltk050h3146w_prepare(struct drm_panel *panel)
|
||||
{
|
||||
struct ltk050h3146w *ctx = panel_to_ltk050h3146w(panel);
|
||||
struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
|
||||
int ret;
|
||||
|
||||
if (ctx->prepared)
|
||||
return 0;
|
||||
|
||||
DRM_DEV_DEBUG_DRIVER(ctx->dev, "Resetting the panel\n");
|
||||
ret = regulator_enable(ctx->vci);
|
||||
if (ret < 0) {
|
||||
DRM_DEV_ERROR(ctx->dev,
|
||||
"Failed to enable vci supply: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
ret = regulator_enable(ctx->iovcc);
|
||||
if (ret < 0) {
|
||||
DRM_DEV_ERROR(ctx->dev,
|
||||
"Failed to enable iovcc supply: %d\n", ret);
|
||||
goto disable_vci;
|
||||
}
|
||||
|
||||
gpiod_set_value_cansleep(ctx->reset_gpio, 1);
|
||||
usleep_range(5000, 6000);
|
||||
gpiod_set_value_cansleep(ctx->reset_gpio, 0);
|
||||
msleep(20);
|
||||
|
||||
ret = ctx->panel_desc->init(ctx);
|
||||
if (ret < 0) {
|
||||
DRM_DEV_ERROR(ctx->dev, "Panel init sequence failed: %d\n",
|
||||
ret);
|
||||
goto disable_iovcc;
|
||||
}
|
||||
|
||||
ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
|
||||
if (ret < 0) {
|
||||
DRM_DEV_ERROR(ctx->dev, "Failed to exit sleep mode: %d\n", ret);
|
||||
goto disable_iovcc;
|
||||
}
|
||||
|
||||
/* T9: 120ms */
|
||||
msleep(120);
|
||||
|
||||
ret = mipi_dsi_dcs_set_display_on(dsi);
|
||||
if (ret < 0) {
|
||||
DRM_DEV_ERROR(ctx->dev, "Failed to set display on: %d\n", ret);
|
||||
goto disable_iovcc;
|
||||
}
|
||||
|
||||
msleep(50);
|
||||
|
||||
ctx->prepared = true;
|
||||
|
||||
return 0;
|
||||
|
||||
disable_iovcc:
|
||||
regulator_disable(ctx->iovcc);
|
||||
disable_vci:
|
||||
regulator_disable(ctx->vci);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int ltk050h3146w_get_modes(struct drm_panel *panel,
|
||||
struct drm_connector *connector)
|
||||
{
|
||||
struct ltk050h3146w *ctx = panel_to_ltk050h3146w(panel);
|
||||
struct drm_display_mode *mode;
|
||||
|
||||
mode = drm_mode_duplicate(connector->dev, ctx->panel_desc->mode);
|
||||
if (!mode)
|
||||
return -ENOMEM;
|
||||
|
||||
drm_mode_set_name(mode);
|
||||
|
||||
mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
|
||||
connector->display_info.width_mm = mode->width_mm;
|
||||
connector->display_info.height_mm = mode->height_mm;
|
||||
drm_mode_probed_add(connector, mode);
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
static const struct drm_panel_funcs ltk050h3146w_funcs = {
|
||||
.unprepare = ltk050h3146w_unprepare,
|
||||
.prepare = ltk050h3146w_prepare,
|
||||
.get_modes = ltk050h3146w_get_modes,
|
||||
};
|
||||
|
||||
static int ltk050h3146w_probe(struct mipi_dsi_device *dsi)
|
||||
{
|
||||
struct device *dev = &dsi->dev;
|
||||
struct ltk050h3146w *ctx;
|
||||
int ret;
|
||||
|
||||
ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
|
||||
if (!ctx)
|
||||
return -ENOMEM;
|
||||
|
||||
ctx->panel_desc = of_device_get_match_data(dev);
|
||||
if (!ctx->panel_desc)
|
||||
return -EINVAL;
|
||||
|
||||
ctx->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
|
||||
if (IS_ERR(ctx->reset_gpio)) {
|
||||
DRM_DEV_ERROR(dev, "cannot get reset gpio\n");
|
||||
return PTR_ERR(ctx->reset_gpio);
|
||||
}
|
||||
|
||||
ctx->vci = devm_regulator_get(dev, "vci");
|
||||
if (IS_ERR(ctx->vci)) {
|
||||
ret = PTR_ERR(ctx->vci);
|
||||
if (ret != -EPROBE_DEFER)
|
||||
DRM_DEV_ERROR(dev,
|
||||
"Failed to request vci regulator: %d\n",
|
||||
ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
ctx->iovcc = devm_regulator_get(dev, "iovcc");
|
||||
if (IS_ERR(ctx->iovcc)) {
|
||||
ret = PTR_ERR(ctx->iovcc);
|
||||
if (ret != -EPROBE_DEFER)
|
||||
DRM_DEV_ERROR(dev,
|
||||
"Failed to request iovcc regulator: %d\n",
|
||||
ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
mipi_dsi_set_drvdata(dsi, ctx);
|
||||
|
||||
ctx->dev = dev;
|
||||
|
||||
dsi->lanes = 4;
|
||||
dsi->format = MIPI_DSI_FMT_RGB888;
|
||||
dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
|
||||
MIPI_DSI_MODE_LPM | MIPI_DSI_MODE_EOT_PACKET;
|
||||
|
||||
drm_panel_init(&ctx->panel, &dsi->dev, <k050h3146w_funcs,
|
||||
DRM_MODE_CONNECTOR_DSI);
|
||||
|
||||
ret = drm_panel_of_backlight(&ctx->panel);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
drm_panel_add(&ctx->panel);
|
||||
|
||||
ret = mipi_dsi_attach(dsi);
|
||||
if (ret < 0) {
|
||||
DRM_DEV_ERROR(dev, "mipi_dsi_attach failed: %d\n", ret);
|
||||
drm_panel_remove(&ctx->panel);
|
||||
return ret;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void ltk050h3146w_shutdown(struct mipi_dsi_device *dsi)
|
||||
{
|
||||
struct ltk050h3146w *ctx = mipi_dsi_get_drvdata(dsi);
|
||||
int ret;
|
||||
|
||||
ret = drm_panel_unprepare(&ctx->panel);
|
||||
if (ret < 0)
|
||||
DRM_DEV_ERROR(&dsi->dev, "Failed to unprepare panel: %d\n",
|
||||
ret);
|
||||
|
||||
ret = drm_panel_disable(&ctx->panel);
|
||||
if (ret < 0)
|
||||
DRM_DEV_ERROR(&dsi->dev, "Failed to disable panel: %d\n",
|
||||
ret);
|
||||
}
|
||||
|
||||
static int ltk050h3146w_remove(struct mipi_dsi_device *dsi)
|
||||
{
|
||||
struct ltk050h3146w *ctx = mipi_dsi_get_drvdata(dsi);
|
||||
int ret;
|
||||
|
||||
ltk050h3146w_shutdown(dsi);
|
||||
|
||||
ret = mipi_dsi_detach(dsi);
|
||||
if (ret < 0)
|
||||
DRM_DEV_ERROR(&dsi->dev, "Failed to detach from DSI host: %d\n",
|
||||
ret);
|
||||
|
||||
drm_panel_remove(&ctx->panel);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct of_device_id ltk050h3146w_of_match[] = {
|
||||
{
|
||||
.compatible = "leadtek,ltk050h3146w",
|
||||
.data = <k050h3146w_data,
|
||||
},
|
||||
{
|
||||
.compatible = "leadtek,ltk050h3146w-a2",
|
||||
.data = <k050h3146w_a2_data,
|
||||
},
|
||||
{ /* sentinel */ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, ltk050h3146w_of_match);
|
||||
|
||||
static struct mipi_dsi_driver ltk050h3146w_driver = {
|
||||
.driver = {
|
||||
.name = "panel-leadtek-ltk050h3146w",
|
||||
.of_match_table = ltk050h3146w_of_match,
|
||||
},
|
||||
.probe = ltk050h3146w_probe,
|
||||
.remove = ltk050h3146w_remove,
|
||||
.shutdown = ltk050h3146w_shutdown,
|
||||
};
|
||||
module_mipi_dsi_driver(ltk050h3146w_driver);
|
||||
|
||||
MODULE_AUTHOR("Heiko Stuebner <heiko.stuebner@theobroma-systems.com>");
|
||||
MODULE_DESCRIPTION("DRM driver for Leadtek LTK050H3146W MIPI DSI panel");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
Loading…
Reference in New Issue