drm/panel: Add Rocktech jh057n00900 panel driver
Support Rocktech jh057n00900 5.5" 720x1440 TFT LCD panel. It is a MIPI DSI video mode panel. The panel seems to use a Sitronix ST7703 look alike (most of the commands look similar to the ST7703's data sheet but use a different number of parameters). The initial version of the DSI init sequence (including sleeps) were provided by the vendor. Sleeps were reduced considerably though to speed up initialization. Signed-off-by: Guido Günther <agx@sigxcpu.org> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Thierry Reding <treding@nvidia.com> Link: https://patchwork.freedesktop.org/patch/msgid/1a9ce687be283c66dfb26d1dfb52a7bf695090fa.1554114302.git.agx@sigxcpu.org
This commit is contained in:
Guido Günther
Thierry Reding
parent
89c30fcb39
commit
530b19698d
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@ -4919,6 +4919,12 @@ S: Orphan / Obsolete
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F: drivers/gpu/drm/r128/
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F: include/uapi/drm/r128_drm.h
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DRM DRIVER FOR ROCKTECH JH057N00900 PANELS
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M: Guido Günther <agx@sigxcpu.org>
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S: Maintained
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F: drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
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F: Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.txt
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DRM DRIVER FOR SAVAGE VIDEO CARDS
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S: Orphan / Obsolete
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F: drivers/gpu/drm/savage/
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@ -158,6 +158,19 @@ config DRM_PANEL_RAYDIUM_RM68200
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Say Y here if you want to enable support for Raydium RM68200
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720x1280 DSI video mode panel.
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config DRM_PANEL_ROCKTECH_JH057N00900
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tristate "Rocktech JH057N00900 MIPI touchscreen 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 Rocktech JH057N00900
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MIPI DSI panel as e.g. used in the Librem 5 devkit. It has a
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resolution of 720x1440 pixels, a built in backlight and touch
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controller.
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Touch input support is provided by the goodix driver and needs to be
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selected separately.
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config DRM_PANEL_RONBO_RB070D30
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tristate "Ronbo Electronics RB070D30 panel"
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depends on OF
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@ -14,6 +14,7 @@ obj-$(CONFIG_DRM_PANEL_ORISETECH_OTM8009A) += panel-orisetech-otm8009a.o
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obj-$(CONFIG_DRM_PANEL_PANASONIC_VVX10F034N00) += panel-panasonic-vvx10f034n00.o
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obj-$(CONFIG_DRM_PANEL_RASPBERRYPI_TOUCHSCREEN) += panel-raspberrypi-touchscreen.o
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obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM68200) += panel-raydium-rm68200.o
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obj-$(CONFIG_DRM_PANEL_ROCKTECH_JH057N00900) += panel-rocktech-jh057n00900.o
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obj-$(CONFIG_DRM_PANEL_RONBO_RB070D30) += panel-ronbo-rb070d30.o
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obj-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.o
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obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6D16D0) += panel-samsung-s6d16d0.o
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@ -0,0 +1,386 @@
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Rockteck jh057n00900 5.5" MIPI-DSI panel driver
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*
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* Copyright (C) Purism SPC 2019
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*/
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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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#include <linux/backlight.h>
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#include <linux/debugfs.h>
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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 <video/display_timing.h>
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#include <video/mipi_display.h>
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#define DRV_NAME "panel-rocktech-jh057n00900"
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/* Manufacturer specific Commands send via DSI */
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#define ST7703_CMD_ALL_PIXEL_OFF 0x22
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#define ST7703_CMD_ALL_PIXEL_ON 0x23
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#define ST7703_CMD_SETDISP 0xB2
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#define ST7703_CMD_SETRGBIF 0xB3
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#define ST7703_CMD_SETCYC 0xB4
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#define ST7703_CMD_SETBGP 0xB5
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#define ST7703_CMD_SETVCOM 0xB6
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#define ST7703_CMD_SETOTP 0xB7
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#define ST7703_CMD_SETPOWER_EXT 0xB8
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#define ST7703_CMD_SETEXTC 0xB9
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#define ST7703_CMD_SETMIPI 0xBA
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#define ST7703_CMD_SETVDC 0xBC
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#define ST7703_CMD_SETSCR 0xC0
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#define ST7703_CMD_SETPOWER 0xC1
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#define ST7703_CMD_SETPANEL 0xCC
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#define ST7703_CMD_SETGAMMA 0xE0
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#define ST7703_CMD_SETEQ 0xE3
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#define ST7703_CMD_SETGIP1 0xE9
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#define ST7703_CMD_SETGIP2 0xEA
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struct jh057n {
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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 backlight_device *backlight;
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bool prepared;
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struct dentry *debugfs;
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};
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static inline struct jh057n *panel_to_jh057n(struct drm_panel *panel)
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{
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return container_of(panel, struct jh057n, 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 jh057n_init_sequence(struct jh057n *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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int ret;
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/*
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* Init sequence was supplied by the panel vendor. Most of the commands
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* resemble the ST7703 but the number of parameters often don't match
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* so it's likely a clone.
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*/
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dsi_generic_write_seq(dsi, ST7703_CMD_SETEXTC,
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0xF1, 0x12, 0x83);
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dsi_generic_write_seq(dsi, ST7703_CMD_SETRGBIF,
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0x10, 0x10, 0x05, 0x05, 0x03, 0xFF, 0x00, 0x00,
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0x00, 0x00);
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dsi_generic_write_seq(dsi, ST7703_CMD_SETSCR,
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0x73, 0x73, 0x50, 0x50, 0x00, 0x00, 0x08, 0x70,
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0x00);
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dsi_generic_write_seq(dsi, ST7703_CMD_SETVDC, 0x4E);
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dsi_generic_write_seq(dsi, ST7703_CMD_SETPANEL, 0x0B);
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dsi_generic_write_seq(dsi, ST7703_CMD_SETCYC, 0x80);
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dsi_generic_write_seq(dsi, ST7703_CMD_SETDISP, 0xF0, 0x12, 0x30);
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dsi_generic_write_seq(dsi, ST7703_CMD_SETEQ,
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0x07, 0x07, 0x0B, 0x0B, 0x03, 0x0B, 0x00, 0x00,
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0x00, 0x00, 0xFF, 0x00, 0xC0, 0x10);
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dsi_generic_write_seq(dsi, ST7703_CMD_SETBGP, 0x08, 0x08);
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msleep(20);
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dsi_generic_write_seq(dsi, ST7703_CMD_SETVCOM, 0x3F, 0x3F);
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dsi_generic_write_seq(dsi, 0xBF, 0x02, 0x11, 0x00);
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dsi_generic_write_seq(dsi, ST7703_CMD_SETGIP1,
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0x82, 0x10, 0x06, 0x05, 0x9E, 0x0A, 0xA5, 0x12,
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0x31, 0x23, 0x37, 0x83, 0x04, 0xBC, 0x27, 0x38,
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0x0C, 0x00, 0x03, 0x00, 0x00, 0x00, 0x0C, 0x00,
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0x03, 0x00, 0x00, 0x00, 0x75, 0x75, 0x31, 0x88,
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0x88, 0x88, 0x88, 0x88, 0x88, 0x13, 0x88, 0x64,
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0x64, 0x20, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88,
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0x02, 0x88, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
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dsi_generic_write_seq(dsi, ST7703_CMD_SETGIP2,
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0x02, 0x21, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x02, 0x46, 0x02, 0x88,
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0x88, 0x88, 0x88, 0x88, 0x88, 0x64, 0x88, 0x13,
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0x57, 0x13, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88,
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0x75, 0x88, 0x23, 0x14, 0x00, 0x00, 0x02, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x0A,
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0xA5, 0x00, 0x00, 0x00, 0x00);
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dsi_generic_write_seq(dsi, ST7703_CMD_SETGAMMA,
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0x00, 0x09, 0x0E, 0x29, 0x2D, 0x3C, 0x41, 0x37,
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0x07, 0x0B, 0x0D, 0x10, 0x11, 0x0F, 0x10, 0x11,
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0x18, 0x00, 0x09, 0x0E, 0x29, 0x2D, 0x3C, 0x41,
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0x37, 0x07, 0x0B, 0x0D, 0x10, 0x11, 0x0F, 0x10,
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0x11, 0x18);
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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(dev, "Failed to exit sleep mode");
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return ret;
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}
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/* Panel is operational 120 msec after reset */
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msleep(60);
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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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DRM_DEV_DEBUG_DRIVER(dev, "Panel init sequence done");
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return 0;
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}
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static int jh057n_enable(struct drm_panel *panel)
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{
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struct jh057n *ctx = panel_to_jh057n(panel);
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return backlight_enable(ctx->backlight);
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}
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static int jh057n_disable(struct drm_panel *panel)
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{
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struct jh057n *ctx = panel_to_jh057n(panel);
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return backlight_disable(ctx->backlight);
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}
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static int jh057n_unprepare(struct drm_panel *panel)
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{
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struct jh057n *ctx = panel_to_jh057n(panel);
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struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
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if (!ctx->prepared)
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return 0;
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mipi_dsi_dcs_set_display_off(dsi);
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ctx->prepared = false;
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return 0;
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}
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static int jh057n_prepare(struct drm_panel *panel)
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{
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struct jh057n *ctx = panel_to_jh057n(panel);
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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.");
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gpiod_set_value_cansleep(ctx->reset_gpio, 1);
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usleep_range(20, 40);
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gpiod_set_value_cansleep(ctx->reset_gpio, 0);
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msleep(20);
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ret = jh057n_init_sequence(ctx);
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if (ret < 0) {
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DRM_DEV_ERROR(ctx->dev, "Panel init sequence failed: %d", ret);
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return ret;
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}
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ctx->prepared = 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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.hdisplay = 720,
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.hsync_start = 720 + 90,
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.hsync_end = 720 + 90 + 20,
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.htotal = 720 + 90 + 20 + 20,
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.vdisplay = 1440,
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.vsync_start = 1440 + 20,
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.vsync_end = 1440 + 20 + 4,
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.vtotal = 1440 + 20 + 4 + 12,
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.vrefresh = 60,
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.clock = 75276,
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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 jh057n_get_modes(struct drm_panel *panel)
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{
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struct jh057n *ctx = panel_to_jh057n(panel);
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struct drm_display_mode *mode;
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mode = drm_mode_duplicate(panel->drm, &default_mode);
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if (!mode) {
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DRM_DEV_ERROR(ctx->dev, "Failed to add mode %ux%u@%u",
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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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panel->connector->display_info.width_mm = mode->width_mm;
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panel->connector->display_info.height_mm = mode->height_mm;
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drm_mode_probed_add(panel->connector, mode);
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return 1;
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}
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static const struct drm_panel_funcs jh057n_drm_funcs = {
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.disable = jh057n_disable,
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.unprepare = jh057n_unprepare,
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.prepare = jh057n_prepare,
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.enable = jh057n_enable,
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.get_modes = jh057n_get_modes,
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};
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static int allpixelson_set(void *data, u64 val)
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{
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struct jh057n *ctx = data;
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struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
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DRM_DEV_DEBUG_DRIVER(ctx->dev, "Setting all pixels on");
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dsi_generic_write_seq(dsi, ST7703_CMD_ALL_PIXEL_ON);
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msleep(val * 1000);
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/* Reset the panel to get video back */
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drm_panel_disable(&ctx->panel);
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drm_panel_unprepare(&ctx->panel);
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drm_panel_prepare(&ctx->panel);
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drm_panel_enable(&ctx->panel);
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return 0;
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}
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DEFINE_SIMPLE_ATTRIBUTE(allpixelson_fops, NULL,
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allpixelson_set, "%llu\n");
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static int jh057n_debugfs_init(struct jh057n *ctx)
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{
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struct dentry *f;
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ctx->debugfs = debugfs_create_dir(DRV_NAME, NULL);
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if (!ctx->debugfs)
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return -ENOMEM;
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f = debugfs_create_file("allpixelson", 0600,
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ctx->debugfs, ctx, &allpixelson_fops);
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if (!f)
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return -ENOMEM;
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return 0;
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}
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static void jh057n_debugfs_remove(struct jh057n *ctx)
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{
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debugfs_remove_recursive(ctx->debugfs);
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ctx->debugfs = NULL;
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}
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static int jh057n_probe(struct mipi_dsi_device *dsi)
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{
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struct device *dev = &dsi->dev;
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struct jh057n *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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DRM_DEV_ERROR(dev, "cannot get reset gpio");
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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->backlight = devm_of_find_backlight(dev);
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if (IS_ERR(ctx->backlight))
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return PTR_ERR(ctx->backlight);
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drm_panel_init(&ctx->panel);
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ctx->panel.dev = dev;
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ctx->panel.funcs = &jh057n_drm_funcs;
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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. Is host ready?");
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drm_panel_remove(&ctx->panel);
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return ret;
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}
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DRM_DEV_INFO(dev, "%ux%u@%u %ubpp dsi %udl - ready",
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default_mode.hdisplay, default_mode.vdisplay,
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default_mode.vrefresh,
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mipi_dsi_pixel_format_to_bpp(dsi->format), dsi->lanes);
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jh057n_debugfs_init(ctx);
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return 0;
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}
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static void jh057n_shutdown(struct mipi_dsi_device *dsi)
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{
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struct jh057n *ctx = mipi_dsi_get_drvdata(dsi);
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int ret;
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ret = jh057n_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 = jh057n_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);
|
||||
}
|
||||
|
||||
static int jh057n_remove(struct mipi_dsi_device *dsi)
|
||||
{
|
||||
struct jh057n *ctx = mipi_dsi_get_drvdata(dsi);
|
||||
int ret;
|
||||
|
||||
jh057n_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);
|
||||
|
||||
jh057n_debugfs_remove(ctx);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct of_device_id jh057n_of_match[] = {
|
||||
{ .compatible = "rocktech,jh057n00900" },
|
||||
{ /* sentinel */ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, jh057n_of_match);
|
||||
|
||||
static struct mipi_dsi_driver jh057n_driver = {
|
||||
.probe = jh057n_probe,
|
||||
.remove = jh057n_remove,
|
||||
.shutdown = jh057n_shutdown,
|
||||
.driver = {
|
||||
.name = DRV_NAME,
|
||||
.of_match_table = jh057n_of_match,
|
||||
},
|
||||
};
|
||||
module_mipi_dsi_driver(jh057n_driver);
|
||||
|
||||
MODULE_AUTHOR("Guido Günther <agx@sigxcpu.org>");
|
||||
MODULE_DESCRIPTION("DRM driver for Rocktech JH057N00900 MIPI DSI panel");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
Loading…
Reference in New Issue