drm/panel: Add panel driver for the Mantix MLAF057WE51-X DSI panel
The panel uses a Focaltech FT8006p, the touch part is handled by the already existing edt-ft5x06. Signed-off-by: Guido Günther <agx@sigxcpu.org> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/118c6e03dd0ff6e86e495579102cbf7d0cfca6f4.1597652012.git.agx@sigxcpu.orgzero-sugar-mainline-defconfig
Guido Günther
Sam Ravnborg
parent
b9ab1248d8
commit
72967d5616
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@ -5474,6 +5474,13 @@ S: Maintained
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F: drivers/gpu/drm/panel/panel-lvds.c
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F: Documentation/devicetree/bindings/display/panel/lvds.yaml
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DRM DRIVER FOR MANTIX MLAF057WE51 PANELS
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M: Guido Günther <agx@sigxcpu.org>
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R: Purism Kernel Team <kernel@puri.sm>
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S: Maintained
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F: Documentation/devicetree/bindings/display/panel/mantix,mlaf057we51-x.yaml
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F: drivers/gpu/drm/panel/panel-mantix-mlaf057we51.c
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DRM DRIVER FOR MATROX G200/G400 GRAPHICS CARDS
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S: Orphan / Obsolete
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F: drivers/gpu/drm/mga/
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@ -217,6 +217,17 @@ config DRM_PANEL_NOVATEK_NT39016
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Say Y here if you want to enable support for the panels built
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around the Novatek NT39016 display controller.
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config DRM_PANEL_MANTIX_MLAF057WE51
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tristate "Mantix MLAF057WE51-X MIPI-DSI LCD 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 the Mantix
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MLAF057WE51-X MIPI DSI panel as e.g. used in the Librem 5. It
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has a resolution of 720x1440 pixels, a built in backlight and touch
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controller.
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config DRM_PANEL_OLIMEX_LCD_OLINUXINO
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tristate "Olimex LCD-OLinuXino panel"
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depends on OF
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@ -20,6 +20,7 @@ obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o
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obj-$(CONFIG_DRM_PANEL_NEC_NL8048HL11) += panel-nec-nl8048hl11.o
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obj-$(CONFIG_DRM_PANEL_NOVATEK_NT35510) += panel-novatek-nt35510.o
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obj-$(CONFIG_DRM_PANEL_NOVATEK_NT39016) += panel-novatek-nt39016.o
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obj-$(CONFIG_DRM_PANEL_MANTIX_MLAF057WE51) += panel-mantix-mlaf057we51.o
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obj-$(CONFIG_DRM_PANEL_OLIMEX_LCD_OLINUXINO) += panel-olimex-lcd-olinuxino.o
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obj-$(CONFIG_DRM_PANEL_ORISETECH_OTM8009A) += panel-orisetech-otm8009a.o
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obj-$(CONFIG_DRM_PANEL_OSD_OSD101T2587_53TS) += panel-osd-osd101t2587-53ts.o
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@ -0,0 +1,328 @@
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Mantix MLAF057WE51 5.7" MIPI-DSI panel driver
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*
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* Copyright (C) Purism SPC 2020
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*/
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#include <linux/backlight.h>
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#include <linux/delay.h>
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#include <linux/gpio/consumer.h>
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#include <linux/module.h>
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#include <linux/regulator/consumer.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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#define DRV_NAME "panel-mantix-mlaf057we51"
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/* Manufacturer specific Commands send via DSI */
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#define MANTIX_CMD_OTP_STOP_RELOAD_MIPI 0x41
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#define MANTIX_CMD_INT_CANCEL 0x4C
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struct mantix {
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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 *avdd;
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struct regulator *avee;
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struct regulator *vddi;
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};
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static inline struct mantix *panel_to_mantix(struct drm_panel *panel)
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{
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return container_of(panel, struct mantix, panel);
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}
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#define dsi_generic_write_seq(dsi, seq...) do { \
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static const u8 d[] = { seq }; \
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int ret; \
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ret = mipi_dsi_generic_write(dsi, 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 mantix_init_sequence(struct mantix *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.
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*/
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dsi_generic_write_seq(dsi, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5A);
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dsi_generic_write_seq(dsi, MANTIX_CMD_INT_CANCEL, 0x03);
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dsi_generic_write_seq(dsi, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5A, 0x03);
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dsi_generic_write_seq(dsi, 0x80, 0xA9, 0x00);
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dsi_generic_write_seq(dsi, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5A, 0x09);
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dsi_generic_write_seq(dsi, 0x80, 0x64, 0x00, 0x64, 0x00, 0x00);
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msleep(20);
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dev_dbg(dev, "Panel init sequence done\n");
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return 0;
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}
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static int mantix_enable(struct drm_panel *panel)
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{
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struct mantix *ctx = panel_to_mantix(panel);
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struct device *dev = ctx->dev;
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struct mipi_dsi_device *dsi = to_mipi_dsi_device(dev);
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int ret;
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ret = mantix_init_sequence(ctx);
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if (ret < 0) {
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dev_err(ctx->dev, "Panel init sequence failed: %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 exit sleep mode\n");
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return ret;
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}
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msleep(20);
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ret = mipi_dsi_dcs_set_display_on(dsi);
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if (ret)
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return ret;
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usleep_range(10000, 12000);
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ret = mipi_dsi_turn_on_peripheral(dsi);
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if (ret < 0) {
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dev_err(dev, "Failed to turn on peripheral\n");
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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 mantix_disable(struct drm_panel *panel)
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{
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struct mantix *ctx = panel_to_mantix(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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ret = mipi_dsi_dcs_set_display_off(dsi);
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if (ret < 0)
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dev_err(ctx->dev, "Failed to turn off the display: %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(ctx->dev, "Failed to enter sleep mode: %d\n", ret);
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return 0;
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}
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static int mantix_unprepare(struct drm_panel *panel)
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{
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struct mantix *ctx = panel_to_mantix(panel);
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regulator_disable(ctx->avee);
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regulator_disable(ctx->avdd);
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/* T11 */
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usleep_range(5000, 6000);
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regulator_disable(ctx->vddi);
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/* T14 */
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msleep(50);
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return 0;
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}
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static int mantix_prepare(struct drm_panel *panel)
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{
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struct mantix *ctx = panel_to_mantix(panel);
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int ret;
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/* Focaltech FT8006P, section 7.3.1 and 7.3.4 */
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dev_dbg(ctx->dev, "Resetting the panel\n");
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ret = regulator_enable(ctx->vddi);
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if (ret < 0) {
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dev_err(ctx->dev, "Failed to enable vddi supply: %d\n", ret);
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return ret;
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}
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/* T1 + T2 */
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usleep_range(8000, 10000);
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ret = regulator_enable(ctx->avdd);
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if (ret < 0) {
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dev_err(ctx->dev, "Failed to enable avdd supply: %d\n", ret);
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return ret;
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}
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/* T2d */
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usleep_range(3500, 4000);
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ret = regulator_enable(ctx->avee);
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if (ret < 0) {
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dev_err(ctx->dev, "Failed to enable avee supply: %d\n", ret);
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return ret;
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}
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/* T3+T5 */
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usleep_range(10000, 12000);
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gpiod_set_value_cansleep(ctx->reset_gpio, 1);
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usleep_range(5150, 7000);
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gpiod_set_value_cansleep(ctx->reset_gpio, 0);
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/* T6 */
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msleep(50);
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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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.hdisplay = 720,
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.hsync_start = 720 + 45,
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.hsync_end = 720 + 45 + 14,
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.htotal = 720 + 45 + 14 + 25,
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.vdisplay = 1440,
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.vsync_start = 1440 + 130,
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.vsync_end = 1440 + 130 + 8,
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.vtotal = 1440 + 130 + 8 + 106,
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.clock = 85298,
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.flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
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.width_mm = 65,
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.height_mm = 130,
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};
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static int mantix_get_modes(struct drm_panel *panel,
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struct drm_connector *connector)
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{
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struct mantix *ctx = panel_to_mantix(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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dev_err(ctx->dev, "Failed to add mode %ux%u@%u\n",
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default_mode.hdisplay, default_mode.vdisplay,
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drm_mode_vrefresh(mode));
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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 mantix_drm_funcs = {
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.disable = mantix_disable,
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.unprepare = mantix_unprepare,
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.prepare = mantix_prepare,
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.enable = mantix_enable,
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.get_modes = mantix_get_modes,
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};
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static int mantix_probe(struct mipi_dsi_device *dsi)
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{
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struct device *dev = &dsi->dev;
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struct mantix *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(dev, "reset", GPIOD_OUT_LOW);
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if (IS_ERR(ctx->reset_gpio)) {
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dev_err(dev, "cannot get reset gpio\n");
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return PTR_ERR(ctx->reset_gpio);
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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 = 4;
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dsi->format = MIPI_DSI_FMT_RGB888;
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dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
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MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_VIDEO_SYNC_PULSE;
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ctx->avdd = devm_regulator_get(dev, "avdd");
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if (IS_ERR(ctx->avdd))
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return dev_err_probe(dev, PTR_ERR(ctx->avdd), "Failed to request avdd regulator\n");
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ctx->avee = devm_regulator_get(dev, "avee");
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if (IS_ERR(ctx->avee))
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return dev_err_probe(dev, PTR_ERR(ctx->avee), "Failed to request avee regulator\n");
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ctx->vddi = devm_regulator_get(dev, "vddi");
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if (IS_ERR(ctx->vddi))
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return dev_err_probe(dev, PTR_ERR(ctx->vddi), "Failed to request vddi regulator\n");
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drm_panel_init(&ctx->panel, dev, &mantix_drm_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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dev_err(dev, "mipi_dsi_attach failed (%d). Is host ready?\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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dev_info(dev, "%ux%u@%u %ubpp dsi %udl - ready\n",
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default_mode.hdisplay, default_mode.vdisplay,
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drm_mode_vrefresh(&default_mode),
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mipi_dsi_pixel_format_to_bpp(dsi->format), dsi->lanes);
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return 0;
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}
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static void mantix_shutdown(struct mipi_dsi_device *dsi)
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{
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struct mantix *ctx = mipi_dsi_get_drvdata(dsi);
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drm_panel_unprepare(&ctx->panel);
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drm_panel_disable(&ctx->panel);
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}
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static int mantix_remove(struct mipi_dsi_device *dsi)
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{
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struct mantix *ctx = mipi_dsi_get_drvdata(dsi);
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mantix_shutdown(dsi);
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mipi_dsi_detach(dsi);
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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 mantix_of_match[] = {
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{ .compatible = "mantix,mlaf057we51-x" },
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{ /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(of, mantix_of_match);
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static struct mipi_dsi_driver mantix_driver = {
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.probe = mantix_probe,
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.remove = mantix_remove,
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.shutdown = mantix_shutdown,
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.driver = {
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.name = DRV_NAME,
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.of_match_table = mantix_of_match,
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},
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};
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module_mipi_dsi_driver(mantix_driver);
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MODULE_AUTHOR("Guido Günther <agx@sigxcpu.org>");
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MODULE_DESCRIPTION("DRM driver for Mantix MLAF057WE51-X MIPI DSI panel");
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MODULE_LICENSE("GPL v2");
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