mirror of https://gitee.com/openkylin/linux.git
drm/panel: add panel driver for Elida KD35T133 panels
Panel driver for the KD35T133 display from Elida, used for example in the rk3326-based Odroid Go Advance handheld. changes in v3: - add missing return value assignment (Francesco) - re-sort header includes (Sam) changes in v2: - rename dsi_generic_write_seq macro to dsi_dcs_write_seq to honor the underlying mipi_dsi_dcs_write (Robin) Signed-off-by: Heiko Stuebner <heiko.stuebner@theobroma-systems.com> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200229151506.750242-3-heiko@sntech.de
This commit is contained in:
Heiko Stuebner
Heiko Stuebner
parent
3c2fa511c4
commit
5b6603360c
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@ -59,6 +59,16 @@ 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_ELIDA_KD35T133
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tristate "Elida KD35T133 panel driver"
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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 the Elida
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KD35T133 controller for 320x480 LCD panels with MIPI-DSI
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system interfaces.
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config DRM_PANEL_FEIXIN_K101_IM2BA02
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tristate "Feixin K101 IM2BA02 panel"
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depends on OF
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@ -4,6 +4,7 @@ obj-$(CONFIG_DRM_PANEL_BOE_HIMAX8279D) += panel-boe-himax8279d.o
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obj-$(CONFIG_DRM_PANEL_BOE_TV101WUM_NL6) += panel-boe-tv101wum-nl6.o
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obj-$(CONFIG_DRM_PANEL_LVDS) += panel-lvds.o
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obj-$(CONFIG_DRM_PANEL_SIMPLE) += panel-simple.o
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obj-$(CONFIG_DRM_PANEL_ELIDA_KD35T133) += panel-elida-kd35t133.o
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obj-$(CONFIG_DRM_PANEL_FEIXIN_K101_IM2BA02) += panel-feixin-k101-im2ba02.o
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obj-$(CONFIG_DRM_PANEL_FEIYANG_FY07024DI26A30D) += panel-feiyang-fy07024di26a30d.o
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obj-$(CONFIG_DRM_PANEL_ILITEK_IL9322) += panel-ilitek-ili9322.o
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@ -0,0 +1,352 @@
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Elida kd35t133 5.5" MIPI-DSI panel driver
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* Copyright (C) 2020 Theobroma Systems Design und Consulting GmbH
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*
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* based on
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*
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* Rockteck jh057n00900 5.5" MIPI-DSI panel driver
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* Copyright (C) Purism SPC 2019
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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/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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/* Manufacturer specific Commands send via DSI */
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#define KD35T133_CMD_INTERFACEMODECTRL 0xb0
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#define KD35T133_CMD_FRAMERATECTRL 0xb1
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#define KD35T133_CMD_DISPLAYINVERSIONCTRL 0xb4
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#define KD35T133_CMD_DISPLAYFUNCTIONCTRL 0xb6
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#define KD35T133_CMD_POWERCONTROL1 0xc0
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#define KD35T133_CMD_POWERCONTROL2 0xc1
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#define KD35T133_CMD_VCOMCONTROL 0xc5
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#define KD35T133_CMD_POSITIVEGAMMA 0xe0
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#define KD35T133_CMD_NEGATIVEGAMMA 0xe1
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#define KD35T133_CMD_SETIMAGEFUNCTION 0xe9
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#define KD35T133_CMD_ADJUSTCONTROL3 0xf7
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struct kd35t133 {
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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 *vdd;
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struct regulator *iovcc;
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bool prepared;
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};
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static inline struct kd35t133 *panel_to_kd35t133(struct drm_panel *panel)
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{
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return container_of(panel, struct kd35t133, 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 kd35t133_init_sequence(struct kd35t133 *ctx)
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{
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struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
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struct device *dev = ctx->dev;
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/*
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* Init sequence was supplied by the panel vendor with minimal
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* documentation.
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*/
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dsi_dcs_write_seq(dsi, KD35T133_CMD_POSITIVEGAMMA,
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0x00, 0x13, 0x18, 0x04, 0x0f, 0x06, 0x3a, 0x56,
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0x4d, 0x03, 0x0a, 0x06, 0x30, 0x3e, 0x0f);
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dsi_dcs_write_seq(dsi, KD35T133_CMD_NEGATIVEGAMMA,
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0x00, 0x13, 0x18, 0x01, 0x11, 0x06, 0x38, 0x34,
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0x4d, 0x06, 0x0d, 0x0b, 0x31, 0x37, 0x0f);
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dsi_dcs_write_seq(dsi, KD35T133_CMD_POWERCONTROL1, 0x18, 0x17);
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dsi_dcs_write_seq(dsi, KD35T133_CMD_POWERCONTROL2, 0x41);
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dsi_dcs_write_seq(dsi, KD35T133_CMD_VCOMCONTROL, 0x00, 0x1a, 0x80);
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dsi_dcs_write_seq(dsi, MIPI_DCS_SET_ADDRESS_MODE, 0x48);
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dsi_dcs_write_seq(dsi, MIPI_DCS_SET_PIXEL_FORMAT, 0x55);
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dsi_dcs_write_seq(dsi, KD35T133_CMD_INTERFACEMODECTRL, 0x00);
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dsi_dcs_write_seq(dsi, KD35T133_CMD_FRAMERATECTRL, 0xa0);
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dsi_dcs_write_seq(dsi, KD35T133_CMD_DISPLAYINVERSIONCTRL, 0x02);
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dsi_dcs_write_seq(dsi, KD35T133_CMD_DISPLAYFUNCTIONCTRL,
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0x20, 0x02);
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dsi_dcs_write_seq(dsi, KD35T133_CMD_SETIMAGEFUNCTION, 0x00);
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dsi_dcs_write_seq(dsi, KD35T133_CMD_ADJUSTCONTROL3,
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0xa9, 0x51, 0x2c, 0x82);
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mipi_dsi_dcs_write(dsi, MIPI_DCS_ENTER_INVERT_MODE, NULL, 0);
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DRM_DEV_DEBUG_DRIVER(dev, "Panel init sequence done\n");
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return 0;
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}
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static int kd35t133_unprepare(struct drm_panel *panel)
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{
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struct kd35t133 *ctx = panel_to_kd35t133(panel);
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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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if (!ctx->prepared)
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return 0;
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ret = mipi_dsi_dcs_set_display_off(dsi);
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if (ret < 0)
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DRM_DEV_ERROR(ctx->dev, "failed to set display off: %d\n",
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ret);
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ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
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if (ret < 0) {
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DRM_DEV_ERROR(ctx->dev, "failed to enter sleep mode: %d\n",
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ret);
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return ret;
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}
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regulator_disable(ctx->iovcc);
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regulator_disable(ctx->vdd);
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ctx->prepared = false;
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return 0;
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}
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static int kd35t133_prepare(struct drm_panel *panel)
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{
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struct kd35t133 *ctx = panel_to_kd35t133(panel);
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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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if (ctx->prepared)
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return 0;
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DRM_DEV_DEBUG_DRIVER(ctx->dev, "Resetting the panel\n");
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ret = regulator_enable(ctx->vdd);
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if (ret < 0) {
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DRM_DEV_ERROR(ctx->dev,
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"Failed to enable vdd supply: %d\n", ret);
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return ret;
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}
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ret = regulator_enable(ctx->iovcc);
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if (ret < 0) {
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DRM_DEV_ERROR(ctx->dev,
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"Failed to enable iovcc supply: %d\n", ret);
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goto disable_vdd;
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}
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msleep(20);
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gpiod_set_value_cansleep(ctx->reset_gpio, 1);
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usleep_range(10, 20);
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gpiod_set_value_cansleep(ctx->reset_gpio, 0);
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msleep(20);
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ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
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if (ret < 0) {
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DRM_DEV_ERROR(ctx->dev, "Failed to exit sleep mode: %d\n", ret);
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goto disable_iovcc;
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}
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msleep(250);
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ret = kd35t133_init_sequence(ctx);
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if (ret < 0) {
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DRM_DEV_ERROR(ctx->dev, "Panel init sequence failed: %d\n",
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ret);
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goto disable_iovcc;
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}
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ret = mipi_dsi_dcs_set_display_on(dsi);
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if (ret < 0) {
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DRM_DEV_ERROR(ctx->dev, "Failed to set display on: %d\n", ret);
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goto disable_iovcc;
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}
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msleep(50);
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ctx->prepared = true;
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return 0;
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disable_iovcc:
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regulator_disable(ctx->iovcc);
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disable_vdd:
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regulator_disable(ctx->vdd);
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return ret;
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}
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static const struct drm_display_mode default_mode = {
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.hdisplay = 320,
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.hsync_start = 320 + 130,
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.hsync_end = 320 + 130 + 4,
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.htotal = 320 + 130 + 4 + 130,
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.vdisplay = 480,
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.vsync_start = 480 + 2,
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.vsync_end = 480 + 2 + 1,
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.vtotal = 480 + 2 + 1 + 2,
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.vrefresh = 60,
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.clock = 17000,
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.width_mm = 42,
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.height_mm = 82,
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};
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static int kd35t133_get_modes(struct drm_panel *panel,
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struct drm_connector *connector)
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{
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struct kd35t133 *ctx = panel_to_kd35t133(panel);
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struct drm_display_mode *mode;
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mode = drm_mode_duplicate(connector->dev, &default_mode);
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if (!mode) {
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DRM_DEV_ERROR(ctx->dev, "Failed to add mode %ux%u@%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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mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
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connector->display_info.width_mm = mode->width_mm;
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connector->display_info.height_mm = mode->height_mm;
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drm_mode_probed_add(connector, mode);
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return 1;
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}
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static const struct drm_panel_funcs kd35t133_funcs = {
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.unprepare = kd35t133_unprepare,
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.prepare = kd35t133_prepare,
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.get_modes = kd35t133_get_modes,
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};
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static int kd35t133_probe(struct mipi_dsi_device *dsi)
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{
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struct device *dev = &dsi->dev;
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struct kd35t133 *ctx;
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int ret;
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ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
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if (!ctx)
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return -ENOMEM;
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ctx->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
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if (IS_ERR(ctx->reset_gpio)) {
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DRM_DEV_ERROR(dev, "cannot get reset gpio\n");
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return PTR_ERR(ctx->reset_gpio);
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}
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ctx->vdd = devm_regulator_get(dev, "vdd");
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if (IS_ERR(ctx->vdd)) {
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ret = PTR_ERR(ctx->vdd);
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if (ret != -EPROBE_DEFER)
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DRM_DEV_ERROR(dev,
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"Failed to request vdd regulator: %d\n",
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ret);
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return ret;
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}
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ctx->iovcc = devm_regulator_get(dev, "iovcc");
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if (IS_ERR(ctx->iovcc)) {
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ret = PTR_ERR(ctx->iovcc);
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if (ret != -EPROBE_DEFER)
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DRM_DEV_ERROR(dev,
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"Failed to request iovcc regulator: %d\n",
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ret);
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return ret;
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}
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mipi_dsi_set_drvdata(dsi, ctx);
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ctx->dev = dev;
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dsi->lanes = 1;
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dsi->format = MIPI_DSI_FMT_RGB888;
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dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
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MIPI_DSI_MODE_LPM | MIPI_DSI_MODE_EOT_PACKET;
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drm_panel_init(&ctx->panel, &dsi->dev, &kd35t133_funcs,
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DRM_MODE_CONNECTOR_DSI);
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ret = drm_panel_of_backlight(&ctx->panel);
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if (ret)
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return ret;
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drm_panel_add(&ctx->panel);
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ret = mipi_dsi_attach(dsi);
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if (ret < 0) {
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DRM_DEV_ERROR(dev, "mipi_dsi_attach failed: %d\n", ret);
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drm_panel_remove(&ctx->panel);
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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 void kd35t133_shutdown(struct mipi_dsi_device *dsi)
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{
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struct kd35t133 *ctx = mipi_dsi_get_drvdata(dsi);
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int ret;
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ret = drm_panel_unprepare(&ctx->panel);
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if (ret < 0)
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DRM_DEV_ERROR(&dsi->dev, "Failed to unprepare panel: %d\n",
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ret);
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ret = drm_panel_disable(&ctx->panel);
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if (ret < 0)
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DRM_DEV_ERROR(&dsi->dev, "Failed to disable panel: %d\n",
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ret);
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}
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static int kd35t133_remove(struct mipi_dsi_device *dsi)
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{
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struct kd35t133 *ctx = mipi_dsi_get_drvdata(dsi);
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int ret;
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kd35t133_shutdown(dsi);
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ret = mipi_dsi_detach(dsi);
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if (ret < 0)
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DRM_DEV_ERROR(&dsi->dev, "Failed to detach from DSI host: %d\n",
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ret);
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drm_panel_remove(&ctx->panel);
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return 0;
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}
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static const struct of_device_id kd35t133_of_match[] = {
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{ .compatible = "elida,kd35t133" },
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{ /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(of, kd35t133_of_match);
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static struct mipi_dsi_driver kd35t133_driver = {
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.driver = {
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.name = "panel-elida-kd35t133",
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.of_match_table = kd35t133_of_match,
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},
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.probe = kd35t133_probe,
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.remove = kd35t133_remove,
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.shutdown = kd35t133_shutdown,
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};
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module_mipi_dsi_driver(kd35t133_driver);
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MODULE_AUTHOR("Heiko Stuebner <heiko.stuebner@theobroma-systems.com>");
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MODULE_DESCRIPTION("DRM driver for Elida kd35t133 MIPI DSI panel");
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MODULE_LICENSE("GPL v2");
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