Samsung S6E8AA5X01 is an AMOLED MIPI DSI panel controller. Implement a basic panel driver for such panels.
The driver also initializes a backlight device, which works by changing the panel's gamma values and aid brightness levels appropriately, with the help of look-up tables acquired from downstream kernel sources. Signed-off-by: Kaustabh Chakraborty <[email protected]> --- drivers/gpu/drm/panel/Kconfig | 11 + drivers/gpu/drm/panel/Makefile | 1 + drivers/gpu/drm/panel/panel-samsung-s6e8aa5x01.c | 922 +++++++++++++++++++++++ 3 files changed, 934 insertions(+) diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index d5aa1c95c6a45b2fea9b1d7a9e8a39fe617b860c..3d92ec3d7a1e85bf099e50e78b666fa38267d05c 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -833,6 +833,17 @@ config DRM_PANEL_SAMSUNG_S6E8AA0 select DRM_MIPI_DSI select VIDEOMODE_HELPERS +config DRM_PANEL_SAMSUNG_S6E8AA5X01 + tristate "Samsung S6E8AA5X01 panel" + depends on GPIOLIB && OF && REGULATOR + depends on DRM_MIPI_DSI + depends on BACKLIGHT_CLASS_DEVICE + help + Say Y here if you want to enable support for Samsung S6E8AA5X01 panel + controller. The controller is driven by the MIPI DSI protocol with 4 + lanes. Panels are available in multiple sizes by vendors, such as in + 720x1280@60Hz or 720x1480@60Hz. + config DRM_PANEL_SAMSUNG_SOFEF00 tristate "Samsung sofef00/s6e3fc2x01 OnePlus 6/6T DSI cmd mode panels" depends on OF diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index 73a39bc726045f3ce52fdeef8c0ec762a4a378c7..995cf2b22427897313f806280b0bc9a67a7b4879 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -86,6 +86,7 @@ obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E63M0_DSI) += panel-samsung-s6e63m0-dsi.o obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E88A0_AMS427AP24) += panel-samsung-s6e88a0-ams427ap24.o obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E88A0_AMS452EF01) += panel-samsung-s6e88a0-ams452ef01.o obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E8AA0) += panel-samsung-s6e8aa0.o +obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E8AA5X01) += panel-samsung-s6e8aa5x01.o obj-$(CONFIG_DRM_PANEL_SAMSUNG_SOFEF00) += panel-samsung-sofef00.o obj-$(CONFIG_DRM_PANEL_SEIKO_43WVF1G) += panel-seiko-43wvf1g.o obj-$(CONFIG_DRM_PANEL_SHARP_LQ101R1SX01) += panel-sharp-lq101r1sx01.o diff --git a/drivers/gpu/drm/panel/panel-samsung-s6e8aa5x01.c b/drivers/gpu/drm/panel/panel-samsung-s6e8aa5x01.c new file mode 100644 index 0000000000000000000000000000000000000000..1804d82ed2d1fb8af0492f4a5bf07ba661f600fb --- /dev/null +++ b/drivers/gpu/drm/panel/panel-samsung-s6e8aa5x01.c @@ -0,0 +1,922 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Samsung S6E8AA5X01 display panel driver. + * + * Copyright (C) 2025 Kaustabh Chakraborty <[email protected]> + */ + +#include <linux/backlight.h> +#include <linux/gpio/consumer.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/of.h> +#include <linux/regulator/consumer.h> + +#include <drm/drm_mipi_dsi.h> +#include <drm/drm_modes.h> +#include <drm/drm_panel.h> +#include <drm/drm_probe_helper.h> + +/* Manufacturer Command Set */ +#define MCS_AIDCTL 0xb2 +#define MCS_ADAPTIVECTL 0xb5 +#define MCS_ELVSS 0xb6 +#define MCS_TEMPERCTL 0xb8 +#define MCS_PENTILE 0xc0 +#define MCS_GAMMACTL 0xca +#define MCS_LTPSCTL 0xcb +#define MCS_PCD 0xcc +#define MCS_ERRFLAG 0xe7 +#define MCS_ACCESSPROT 0xf0 +#define MCS_DISPCTL 0xf2 +#define MCS_GAMMAUPD 0xf7 + +#define GAMMA_CMD_LEN 34 +#define AID_CMD_LEN 3 + +static const struct { + u8 gamma[GAMMA_CMD_LEN]; + u8 aid[AID_CMD_LEN]; +} s6e8aa5x01_cmds[] = { + { + /* 5 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x94, + 0x88, 0x89, 0x8a, 0x87, 0x87, 0x89, + 0x8d, 0x8c, 0x8d, 0x89, 0x8c, 0x8e, + 0x8e, 0x8f, 0x90, 0xa3, 0xa2, 0x9a, + 0xcf, 0xca, 0x9f, 0xe6, 0xff, 0xb4, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x05, 0xa5 }, + }, { + /* 6 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x95, + 0x88, 0x89, 0x8b, 0x87, 0x87, 0x89, + 0x8c, 0x8a, 0x8c, 0x85, 0x88, 0x8c, + 0x8b, 0x8c, 0x8e, 0xa2, 0xa2, 0x9a, + 0xd0, 0xcc, 0xa2, 0xed, 0xff, 0xb7, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x05, 0x95 }, + }, { + /* 7 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x95, + 0x88, 0x89, 0x8b, 0x87, 0x87, 0x89, + 0x8c, 0x8a, 0x8c, 0x85, 0x88, 0x8c, + 0x8b, 0x8c, 0x8e, 0xa2, 0xa2, 0x99, + 0xc8, 0xc4, 0x9d, 0xed, 0xff, 0xb7, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x05, 0x89 }, + }, { + /* 8 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x96, + 0x88, 0x89, 0x8a, 0x87, 0x87, 0x89, + 0x8a, 0x88, 0x8b, 0x83, 0x86, 0x8b, + 0x8c, 0x8b, 0x8d, 0x9d, 0x9f, 0x97, + 0xc7, 0xc3, 0x9c, 0xf5, 0xff, 0xbb, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x05, 0x7e }, + }, { + /* 9 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x96, + 0x88, 0x89, 0x8a, 0x87, 0x87, 0x89, + 0x89, 0x86, 0x8a, 0x82, 0x84, 0x88, + 0x90, 0x8f, 0x91, 0x95, 0x97, 0x94, + 0xc6, 0xc2, 0x9d, 0xf5, 0xff, 0xbb, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x05, 0x73 }, + }, { + /* 10 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x96, + 0x88, 0x89, 0x8a, 0x87, 0x87, 0x89, + 0x89, 0x86, 0x8a, 0x82, 0x84, 0x88, + 0x90, 0x8f, 0x91, 0x94, 0x97, 0x93, + 0xc6, 0xc2, 0x9e, 0xec, 0xff, 0xb7, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x05, 0x67 }, + }, { + /* 11 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x96, + 0x88, 0x89, 0x8a, 0x87, 0x87, 0x89, + 0x89, 0x86, 0x8a, 0x82, 0x84, 0x88, + 0x8b, 0x8b, 0x8d, 0x90, 0x93, 0x92, + 0xc5, 0xc1, 0x9c, 0xf5, 0xff, 0xbb, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x05, 0x56 }, + }, { + /* 12 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x96, + 0x88, 0x89, 0x8b, 0x87, 0x87, 0x89, + 0x89, 0x86, 0x89, 0x82, 0x84, 0x88, + 0x87, 0x86, 0x8a, 0x8c, 0x90, 0x8f, + 0xcd, 0xc9, 0xa1, 0xec, 0xff, 0xb7, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x05, 0x4a }, + }, { + /* 13 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x96, + 0x88, 0x89, 0x8b, 0x87, 0x87, 0x89, + 0x89, 0x86, 0x89, 0x82, 0x84, 0x88, + 0x87, 0x86, 0x8a, 0x8c, 0x90, 0x8e, + 0xc4, 0xbf, 0x9c, 0xf5, 0xff, 0xbb, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x05, 0x3b }, + }, { + /* 14 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x96, + 0x88, 0x89, 0x8b, 0x87, 0x87, 0x89, + 0x89, 0x86, 0x89, 0x82, 0x84, 0x88, + 0x87, 0x86, 0x89, 0x8c, 0x90, 0x8f, + 0xc2, 0xbf, 0x9c, 0xec, 0xff, 0xb7, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x05, 0x35 }, + }, { + /* 15 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x96, + 0x88, 0x89, 0x8b, 0x87, 0x87, 0x89, + 0x89, 0x86, 0x89, 0x82, 0x84, 0x88, + 0x87, 0x86, 0x89, 0x8c, 0x90, 0x8f, + 0xb7, 0xb6, 0x96, 0xec, 0xff, 0xb7, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x05, 0x25 }, + }, { + /* 16 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x96, + 0x88, 0x89, 0x8b, 0x87, 0x87, 0x89, + 0x89, 0x86, 0x89, 0x82, 0x84, 0x88, + 0x88, 0x86, 0x89, 0x8c, 0x90, 0x8f, + 0xb7, 0xb6, 0x96, 0xec, 0xff, 0xb7, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x05, 0x20 }, + }, { + /* 17 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x96, + 0x88, 0x89, 0x8b, 0x87, 0x87, 0x89, + 0x89, 0x86, 0x89, 0x7f, 0x80, 0x86, + 0x86, 0x85, 0x89, 0x88, 0x8c, 0x8e, + 0xbf, 0xbe, 0x9c, 0xec, 0xff, 0xb7, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x05, 0x11 }, + }, { + /* 19 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x96, + 0x88, 0x89, 0x8b, 0x87, 0x87, 0x89, + 0x89, 0x86, 0x89, 0x7f, 0x80, 0x86, + 0x87, 0x85, 0x89, 0x88, 0x8c, 0x8e, + 0xb3, 0xb4, 0x97, 0xeb, 0xff, 0xb7, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x04, 0xf2 }, + }, { + /* 20 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x95, + 0x88, 0x89, 0x8b, 0x87, 0x87, 0x89, + 0x89, 0x86, 0x89, 0x7f, 0x80, 0x86, + 0x87, 0x85, 0x89, 0x89, 0x8c, 0x8e, + 0xb3, 0xb4, 0x97, 0xeb, 0xff, 0xb7, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x04, 0xe4 }, + }, { + /* 21 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x96, + 0x88, 0x89, 0x8b, 0x87, 0x87, 0x89, + 0x8a, 0x88, 0x8b, 0x7d, 0x7e, 0x84, + 0x8c, 0x8a, 0x8c, 0x8e, 0x90, 0x8f, + 0xb6, 0xb6, 0x97, 0xe3, 0xff, 0xb3, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x04, 0xd5 }, + }, { + /* 22 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x97, + 0x88, 0x89, 0x8b, 0x87, 0x87, 0x89, + 0x8a, 0x88, 0x8b, 0x81, 0x82, 0x86, + 0x87, 0x86, 0x88, 0x8e, 0x90, 0x8f, + 0xb6, 0xb6, 0x95, 0xe3, 0xff, 0xb3, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x04, 0xc5 }, + }, { + /* 24 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x97, + 0x88, 0x89, 0x8b, 0x88, 0x88, 0x8a, + 0x8a, 0x87, 0x8a, 0x81, 0x82, 0x86, + 0x87, 0x86, 0x88, 0x8e, 0x90, 0x8f, + 0xb6, 0xb6, 0x94, 0xe3, 0xff, 0xb3, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x04, 0xa7 }, + }, { + /* 25 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x98, + 0x88, 0x89, 0x8b, 0x88, 0x88, 0x8a, + 0x8a, 0x87, 0x8a, 0x81, 0x82, 0x86, + 0x87, 0x86, 0x87, 0x8e, 0x90, 0x8f, + 0xbf, 0xbf, 0x9a, 0xda, 0xfa, 0xaf, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x04, 0x95 }, + }, { + /* 27 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x99, + 0x88, 0x89, 0x8b, 0x88, 0x88, 0x8a, + 0x8a, 0x87, 0x8a, 0x83, 0x86, 0x8a, + 0x88, 0x87, 0x87, 0x88, 0x8b, 0x8c, + 0xbf, 0xbf, 0x9a, 0xda, 0xfa, 0xaf, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x04, 0x76 }, + }, { + /* 29 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x99, + 0x88, 0x89, 0x8b, 0x88, 0x88, 0x8a, + 0x8a, 0x87, 0x8b, 0x83, 0x86, 0x89, + 0x88, 0x87, 0x88, 0x88, 0x8b, 0x8b, + 0xbf, 0xbf, 0x9a, 0xda, 0xfa, 0xaf, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x04, 0x54 }, + }, { + /* 30 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x9a, + 0x88, 0x89, 0x8b, 0x88, 0x88, 0x8a, + 0x8a, 0x87, 0x8a, 0x84, 0x86, 0x8a, + 0x87, 0x87, 0x87, 0x88, 0x8b, 0x8b, + 0xbf, 0xbf, 0x99, 0xda, 0xfa, 0xaf, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x04, 0x44 }, + }, { + /* 32 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x9a, + 0x89, 0x89, 0x8c, 0x88, 0x88, 0x8a, + 0x89, 0x87, 0x8a, 0x84, 0x86, 0x8a, + 0x87, 0x87, 0x87, 0x89, 0x8b, 0x8b, + 0xbf, 0xbf, 0x98, 0xd2, 0xf2, 0xac, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x04, 0x1f }, + }, { + /* 34 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x9b, + 0x88, 0x89, 0x8b, 0x88, 0x88, 0x8a, + 0x8b, 0x87, 0x8b, 0x83, 0x86, 0x89, + 0x87, 0x87, 0x88, 0x88, 0x8b, 0x8a, + 0xbf, 0xbf, 0x98, 0xd2, 0xf2, 0xac, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x03, 0xff }, + }, { + /* 37 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x9b, + 0x89, 0x89, 0x8c, 0x88, 0x88, 0x8a, + 0x8a, 0x87, 0x8a, 0x81, 0x82, 0x86, + 0x86, 0x86, 0x86, 0x8d, 0x90, 0x8d, + 0xc0, 0xbf, 0x9a, 0xd2, 0xf2, 0xac, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x03, 0xd3 }, + }, { + /* 39 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x9b, + 0x89, 0x89, 0x8c, 0x88, 0x88, 0x8a, + 0x8a, 0x87, 0x8a, 0x81, 0x82, 0x86, + 0x87, 0x86, 0x87, 0x8d, 0x90, 0x8d, + 0xb6, 0xb6, 0x93, 0xda, 0xf9, 0xaf, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x03, 0xb3 }, + }, { + /* 41 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x9b, + 0x89, 0x89, 0x8c, 0x88, 0x88, 0x8a, + 0x8a, 0x87, 0x8b, 0x81, 0x82, 0x85, + 0x87, 0x86, 0x87, 0x8d, 0x90, 0x8d, + 0xb6, 0xb6, 0x94, 0xda, 0xf9, 0xaf, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x03, 0x93 }, + }, { + /* 44 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x9b, + 0x89, 0x89, 0x8c, 0x88, 0x88, 0x8a, + 0x8a, 0x87, 0x8b, 0x81, 0x82, 0x86, + 0x87, 0x86, 0x86, 0x85, 0x87, 0x8a, + 0xbe, 0xbe, 0x99, 0xda, 0xf9, 0xaf, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x03, 0x66 }, + }, { + /* 47 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x9b, + 0x89, 0x89, 0x8c, 0x88, 0x88, 0x8a, + 0x8a, 0x87, 0x8b, 0x81, 0x82, 0x86, + 0x88, 0x86, 0x87, 0x84, 0x87, 0x89, + 0xb4, 0xb4, 0x94, 0xe2, 0xff, 0xb3, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x03, 0x40 }, + }, { + /* 50 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x9c, + 0x89, 0x89, 0x8b, 0x88, 0x88, 0x8a, + 0x8a, 0x87, 0x8b, 0x81, 0x82, 0x86, + 0x88, 0x86, 0x87, 0x84, 0x87, 0x89, + 0xb4, 0xb4, 0x95, 0xe2, 0xff, 0xb3, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x03, 0x0e }, + }, { + /* 53 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x9c, + 0x89, 0x89, 0x8b, 0x88, 0x88, 0x8a, + 0x8a, 0x87, 0x8b, 0x81, 0x82, 0x86, + 0x88, 0x86, 0x87, 0x85, 0x87, 0x8a, + 0xb4, 0xb4, 0x96, 0xe2, 0xff, 0xb3, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x02, 0xe2 }, + }, { + /* 56 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x9c, + 0x89, 0x89, 0x8b, 0x88, 0x88, 0x8a, + 0x8a, 0x87, 0x8b, 0x81, 0x82, 0x86, + 0x88, 0x86, 0x87, 0x85, 0x87, 0x8a, + 0xab, 0xab, 0x90, 0xdd, 0xf7, 0xaf, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x02, 0xb5 }, + }, { + /* 60 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x9c, + 0x89, 0x89, 0x8b, 0x88, 0x88, 0x8a, + 0x8a, 0x87, 0x8b, 0x82, 0x82, 0x87, + 0x83, 0x81, 0x84, 0x81, 0x84, 0x88, + 0xb3, 0xb3, 0x96, 0xcf, 0xe5, 0xa8, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x02, 0x77 }, + }, { + /* 64 nits */ + { MCS_GAMMACTL, + 0x00, 0x98, 0x00, 0xa4, 0x00, 0x9c, + 0x89, 0x89, 0x8b, 0x88, 0x88, 0x8a, + 0x8a, 0x87, 0x8b, 0x82, 0x82, 0x87, + 0x83, 0x81, 0x84, 0x82, 0x84, 0x88, + 0xb2, 0xb3, 0x97, 0xcf, 0xe5, 0xa8, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x02, 0x36 }, + }, { + /* 68 nits */ + { MCS_GAMMACTL, + 0x00, 0x9b, 0x00, 0xa6, 0x00, 0x9d, + 0x88, 0x88, 0x89, 0x89, 0x89, 0x8b, + 0x8a, 0x88, 0x8b, 0x7f, 0x80, 0x86, + 0x88, 0x86, 0x87, 0x7d, 0x7f, 0x85, + 0xb2, 0xb3, 0x97, 0xcf, 0xe5, 0xa8, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x02, 0x15 }, + }, { + /* 72 nits */ + { MCS_GAMMACTL, + 0x00, 0x9c, 0x00, 0xa9, 0x00, 0xa0, + 0x88, 0x88, 0x89, 0x88, 0x88, 0x8a, + 0x8c, 0x8a, 0x8d, 0x7f, 0x81, 0x85, + 0x84, 0x82, 0x84, 0x85, 0x87, 0x8a, + 0xaa, 0xab, 0x93, 0xcf, 0xe5, 0xa8, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x02, 0x15 }, + }, { + /* 77 nits */ + { MCS_GAMMACTL, + 0x00, 0xa1, 0x00, 0xad, 0x00, 0xa5, + 0x89, 0x89, 0x8a, 0x88, 0x87, 0x89, + 0x8c, 0x89, 0x8d, 0x7f, 0x81, 0x85, + 0x84, 0x83, 0x84, 0x81, 0x83, 0x86, + 0xaa, 0xab, 0x93, 0xc0, 0xd3, 0xa1, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x02, 0x15 }, + }, { + /* 82 nits */ + { MCS_GAMMACTL, + 0x00, 0xa5, 0x00, 0xb0, 0x00, 0xa9, + 0x88, 0x89, 0x89, 0x85, 0x86, 0x89, + 0x8a, 0x88, 0x8b, 0x82, 0x82, 0x87, + 0x81, 0x80, 0x82, 0x89, 0x8b, 0x8b, + 0xa2, 0xa3, 0x8e, 0xc0, 0xd3, 0xa1, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x02, 0x15 }, + }, { + /* 87 nits */ + { MCS_GAMMACTL, + 0x00, 0xab, 0x00, 0xb4, 0x00, 0xad, + 0x88, 0x89, 0x8a, 0x84, 0x86, 0x88, + 0x8a, 0x88, 0x8b, 0x7f, 0x7f, 0x84, + 0x86, 0x84, 0x85, 0x85, 0x86, 0x88, + 0xa2, 0xa3, 0x8f, 0xc0, 0xd3, 0xa1, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x02, 0x15 }, + }, { + /* 93 nits */ + { MCS_GAMMACTL, + 0x00, 0xaf, 0x00, 0xb9, 0x00, 0xb1, + 0x88, 0x89, 0x8a, 0x84, 0x85, 0x87, + 0x8a, 0x89, 0x8b, 0x7e, 0x7e, 0x83, + 0x87, 0x86, 0x86, 0x88, 0x8a, 0x89, + 0x9c, 0x9c, 0x8b, 0xc0, 0xd3, 0xa1, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x02, 0x15 }, + }, { + /* 98 nits */ + { MCS_GAMMACTL, + 0x00, 0xb3, 0x00, 0xbc, 0x00, 0xb5, + 0x88, 0x88, 0x88, 0x84, 0x84, 0x86, + 0x8a, 0x88, 0x8a, 0x7f, 0x7f, 0x84, + 0x84, 0x83, 0x84, 0x88, 0x8a, 0x89, + 0x9c, 0x9c, 0x8b, 0xc0, 0xd3, 0xa1, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x02, 0x15 }, + }, { + /* 105 nits */ + { MCS_GAMMACTL, + 0x00, 0xb7, 0x00, 0xc0, 0x00, 0xba, + 0x87, 0x87, 0x88, 0x85, 0x85, 0x87, + 0x89, 0x88, 0x89, 0x7f, 0x7f, 0x83, + 0x81, 0x80, 0x82, 0x88, 0x8a, 0x89, + 0x9c, 0x9c, 0x8c, 0xb2, 0xc2, 0x9a, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x02, 0x15 }, + }, { + /* 111 nits */ + { MCS_GAMMACTL, + 0x00, 0xbb, 0x00, 0xc3, 0x00, 0xbe, + 0x87, 0x87, 0x88, 0x85, 0x85, 0x88, + 0x88, 0x87, 0x89, 0x80, 0x80, 0x84, + 0x81, 0x81, 0x82, 0x85, 0x86, 0x87, + 0x9c, 0x9c, 0x8b, 0xb2, 0xc2, 0x9a, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x02, 0x15 }, + }, { + /* 119 nits */ + { MCS_GAMMACTL, + 0x00, 0xc0, 0x00, 0xc8, 0x00, 0xc4, + 0x87, 0x87, 0x88, 0x82, 0x84, 0x86, + 0x87, 0x85, 0x87, 0x82, 0x81, 0x84, + 0x83, 0x82, 0x83, 0x80, 0x81, 0x84, + 0x9c, 0x9c, 0x8c, 0xb2, 0xc2, 0x9a, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x02, 0x14 }, + }, { + /* 126 nits */ + { MCS_GAMMACTL, + 0x00, 0xc0, 0x00, 0xc8, 0x00, 0xc4, + 0x87, 0x87, 0x88, 0x82, 0x84, 0x86, + 0x87, 0x85, 0x87, 0x82, 0x81, 0x84, + 0x83, 0x82, 0x83, 0x80, 0x81, 0x84, + 0x9c, 0x9c, 0x8d, 0xb2, 0xc2, 0x9a, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x01, 0xde }, + }, { + /* 134 nits */ + { MCS_GAMMACTL, + 0x00, 0xc0, 0x00, 0xc8, 0x00, 0xc4, + 0x87, 0x87, 0x88, 0x82, 0x84, 0x86, + 0x87, 0x85, 0x87, 0x82, 0x81, 0x84, + 0x83, 0x82, 0x83, 0x80, 0x81, 0x84, + 0x9c, 0x9c, 0x8d, 0xa4, 0xb0, 0x92, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x01, 0x94 }, + }, { + /* 143 nits */ + { MCS_GAMMACTL, + 0x00, 0xc0, 0x00, 0xc8, 0x00, 0xc3, + 0x87, 0x87, 0x88, 0x82, 0x84, 0x86, + 0x87, 0x85, 0x87, 0x82, 0x81, 0x85, + 0x83, 0x82, 0x83, 0x80, 0x81, 0x84, + 0x92, 0x92, 0x89, 0xab, 0xb6, 0x96, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x01, 0x46 }, + }, { + /* 152 nits */ + { MCS_GAMMACTL, + 0x00, 0xc0, 0x00, 0xc8, 0x00, 0xc3, + 0x87, 0x87, 0x88, 0x83, 0x84, 0x86, + 0x87, 0x85, 0x87, 0x81, 0x81, 0x85, + 0x84, 0x82, 0x83, 0x80, 0x81, 0x83, + 0x92, 0x92, 0x8b, 0xab, 0xb6, 0x96, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x00, 0xfa }, + }, { + /* 162 nits */ + { MCS_GAMMACTL, + 0x00, 0xc0, 0x00, 0xc8, 0x00, 0xc3, + 0x87, 0x87, 0x88, 0x83, 0x84, 0x86, + 0x87, 0x85, 0x87, 0x81, 0x81, 0x84, + 0x84, 0x82, 0x84, 0x80, 0x81, 0x83, + 0x92, 0x92, 0x8b, 0x9d, 0xa4, 0x8e, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x00, 0xac }, + }, { + /* 172 nits */ + { MCS_GAMMACTL, + 0x00, 0xc0, 0x00, 0xc8, 0x00, 0xc3, + 0x87, 0x87, 0x88, 0x83, 0x84, 0x86, + 0x87, 0x85, 0x87, 0x81, 0x81, 0x84, + 0x84, 0x82, 0x83, 0x80, 0x81, 0x84, + 0x93, 0x92, 0x8c, 0x9d, 0xa4, 0x8e, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x00, 0x57 }, + }, { + /* 183 nits */ + { MCS_GAMMACTL, + 0x00, 0xc2, 0x00, 0xca, 0x00, 0xc5, + 0x86, 0x86, 0x87, 0x85, 0x84, 0x87, + 0x87, 0x86, 0x88, 0x7e, 0x80, 0x83, + 0x84, 0x82, 0x83, 0x80, 0x81, 0x83, + 0x93, 0x92, 0x8c, 0x9d, 0xa4, 0x8e, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x00, 0x10 }, + }, { + /* 195 nits */ + { MCS_GAMMACTL, + 0x00, 0xc7, 0x00, 0xce, 0x00, 0xc9, + 0x86, 0x87, 0x86, 0x83, 0x83, 0x85, + 0x85, 0x84, 0x86, 0x82, 0x82, 0x85, + 0x80, 0x80, 0x81, 0x81, 0x81, 0x84, + 0x93, 0x92, 0x8c, 0x9d, 0xa4, 0x8e, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x00, 0x10 }, + }, { + /* 207 nits */ + { MCS_GAMMACTL, + 0x00, 0xcc, 0x00, 0xd2, 0x00, 0xce, + 0x86, 0x86, 0x87, 0x81, 0x83, 0x84, + 0x84, 0x82, 0x84, 0x83, 0x83, 0x85, + 0x81, 0x81, 0x82, 0x7c, 0x7d, 0x81, + 0x93, 0x92, 0x8c, 0x9d, 0xa4, 0x8e, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x00, 0x10 }, + }, { + /* 220 nits */ + { MCS_GAMMACTL, + 0x00, 0xd1, 0x00, 0xd6, 0x00, 0xd3, + 0x86, 0x86, 0x86, 0x81, 0x83, 0x84, + 0x84, 0x82, 0x84, 0x80, 0x80, 0x83, + 0x81, 0x81, 0x82, 0x7c, 0x7d, 0x81, + 0x93, 0x92, 0x8c, 0x9d, 0xa4, 0x8e, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x00, 0x10 }, + }, { + /* 234 nits */ + { MCS_GAMMACTL, + 0x00, 0xd6, 0x00, 0xdb, 0x00, 0xd8, + 0x85, 0x85, 0x85, 0x81, 0x83, 0x84, + 0x83, 0x82, 0x83, 0x80, 0x80, 0x82, + 0x84, 0x82, 0x83, 0x79, 0x79, 0x7e, + 0x93, 0x92, 0x8d, 0x9d, 0xa4, 0x8e, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x00, 0x10 }, + }, { + /* 249 nits */ + { MCS_GAMMACTL, + 0x00, 0xdc, 0x00, 0xe0, 0x00, 0xdd, + 0x84, 0x84, 0x84, 0x81, 0x82, 0x83, + 0x84, 0x82, 0x84, 0x7f, 0x7f, 0x82, + 0x81, 0x80, 0x81, 0x80, 0x81, 0x82, + 0x8c, 0x8c, 0x86, 0x9d, 0xa4, 0x8e, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x00, 0x10 }, + }, { + /* 265 nits */ + { MCS_GAMMACTL, + 0x00, 0xe2, 0x00, 0xe5, 0x00, 0xe3, + 0x83, 0x83, 0x83, 0x81, 0x82, 0x83, + 0x82, 0x82, 0x83, 0x82, 0x81, 0x83, + 0x7f, 0x7e, 0x80, 0x7c, 0x7d, 0x80, + 0x8c, 0x8c, 0x86, 0x8e, 0x92, 0x87, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x00, 0x10 }, + }, { + /* 282 nits */ + { MCS_GAMMACTL, + 0x00, 0xe8, 0x00, 0xea, 0x00, 0xe9, + 0x83, 0x83, 0x83, 0x80, 0x82, 0x82, + 0x81, 0x82, 0x82, 0x82, 0x81, 0x82, + 0x81, 0x80, 0x81, 0x80, 0x80, 0x81, + 0x85, 0x85, 0x83, 0x8e, 0x92, 0x87, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x00, 0x10 }, + }, { + /* 300 nits */ + { MCS_GAMMACTL, + 0x00, 0xed, 0x00, 0xef, 0x00, 0xed, + 0x81, 0x82, 0x81, 0x81, 0x81, 0x82, + 0x82, 0x82, 0x83, 0x80, 0x80, 0x81, + 0x81, 0x81, 0x82, 0x83, 0x83, 0x83, + 0x80, 0x80, 0x7f, 0x8e, 0x92, 0x87, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x00, 0x10 }, + }, { + /* 316 nits */ + { MCS_GAMMACTL, + 0x00, 0xf3, 0x00, 0xf4, 0x00, 0xf3, + 0x80, 0x81, 0x80, 0x81, 0x81, 0x81, + 0x82, 0x82, 0x82, 0x81, 0x80, 0x81, + 0x82, 0x82, 0x83, 0x80, 0x80, 0x80, + 0x80, 0x80, 0x7f, 0x80, 0x80, 0x80, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x00, 0x10 }, + }, { + /* 333 nits */ + { MCS_GAMMACTL, + 0x00, 0xf8, 0x00, 0xf8, 0x00, 0xf8, + 0x80, 0x81, 0x80, 0x81, 0x80, 0x81, + 0x81, 0x82, 0x82, 0x81, 0x80, 0x81, + 0x83, 0x83, 0x83, 0x7e, 0x7d, 0x7e, + 0x80, 0x80, 0x7f, 0x80, 0x80, 0x80, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x00, 0x10 }, + }, { + /* 360 nits */ + { MCS_GAMMACTL, + 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, + 0x00, 0x00, 0x00, }, + { MCS_AIDCTL, 0x00, 0x10 }, + }, +}; + +struct s6e8aa5x01_ctx { + struct drm_panel panel; + struct mipi_dsi_device *dsi; + struct drm_display_mode mode; + struct backlight_device *backlight; + struct regulator_bulk_data supplies[2]; + struct gpio_desc *reset_gpio; + struct mutex mcs_mutex; + u32 bus_flags; + u32 width; + u32 height; +}; + +static inline struct s6e8aa5x01_ctx *to_s6e8aa5x01_ctx(struct drm_panel *panel) +{ + return container_of(panel, struct s6e8aa5x01_ctx, panel); +} + +static void s6e8aa5x01_mcs_protect(struct mipi_dsi_multi_context *dsi, + struct s6e8aa5x01_ctx *ctx, bool protect) +{ + if (protect) { + mipi_dsi_dcs_write_seq_multi(dsi, MCS_ACCESSPROT, 0xa5, 0xa5); + mutex_unlock(&ctx->mcs_mutex); + } else { + mutex_lock(&ctx->mcs_mutex); + mipi_dsi_dcs_write_seq_multi(dsi, MCS_ACCESSPROT, 0x5a, 0x5a); + } +} + +static int s6e8aa5x01_update_brightness(struct backlight_device *backlight) +{ + struct mipi_dsi_multi_context dsi = { .dsi = bl_get_data(backlight) }; + struct s6e8aa5x01_ctx *ctx = mipi_dsi_get_drvdata(dsi.dsi); + u16 lvl = backlight->props.brightness; + + s6e8aa5x01_mcs_protect(&dsi, ctx, false); + + mipi_dsi_dcs_write_buffer_multi(&dsi, s6e8aa5x01_cmds[lvl].gamma, GAMMA_CMD_LEN); + mipi_dsi_dcs_write_buffer_multi(&dsi, s6e8aa5x01_cmds[lvl].aid, AID_CMD_LEN); + mipi_dsi_dcs_write_seq_multi(&dsi, MCS_GAMMAUPD, 0x03); + + s6e8aa5x01_mcs_protect(&dsi, ctx, true); + + return dsi.accum_err; +} + +static int s6e8aa5x01_prepare(struct drm_panel *panel) +{ + struct s6e8aa5x01_ctx *ctx = to_s6e8aa5x01_ctx(panel); + struct device *dev = &ctx->dsi->dev; + int ret; + + ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies); + if (ret < 0) { + dev_err(dev, "Failed to enable regulators: %d\n", ret); + return ret; + } + + gpiod_set_value_cansleep(ctx->reset_gpio, 0); + usleep_range(5000, 6000); + gpiod_set_value_cansleep(ctx->reset_gpio, 1); + usleep_range(5000, 6000); + gpiod_set_value_cansleep(ctx->reset_gpio, 0); + usleep_range(10000, 11000); + + return 0; +} + +static int s6e8aa5x01_unprepare(struct drm_panel *panel) +{ + struct s6e8aa5x01_ctx *ctx = to_s6e8aa5x01_ctx(panel); + + gpiod_set_value_cansleep(ctx->reset_gpio, 1); + usleep_range(5000, 6000); + + regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies); + + return 0; +} + +static int s6e8aa5x01_enable(struct drm_panel *panel) +{ + struct s6e8aa5x01_ctx *ctx = to_s6e8aa5x01_ctx(panel); + struct mipi_dsi_multi_context dsi = { .dsi = ctx->dsi }; + u16 lvl = ctx->backlight->props.brightness; + + mipi_dsi_dcs_exit_sleep_mode_multi(&dsi); + mipi_dsi_msleep(&dsi, 100); + + s6e8aa5x01_mcs_protect(&dsi, ctx, false); + + /* general panel settings */ + mipi_dsi_dcs_write_seq_multi(&dsi, MCS_PENTILE, 0xd8, 0xd8, 0x00); + mipi_dsi_dcs_write_seq_multi(&dsi, MCS_PCD, 0x5c); + mipi_dsi_dcs_write_seq_multi(&dsi, MCS_ERRFLAG, 0xed, 0xc7, 0x23, 0x67); + mipi_dsi_dcs_write_seq_multi(&dsi, MCS_DISPCTL, 0x0c, 0x0c, 0xb9, 0x01); + mipi_dsi_dcs_write_seq_multi(&dsi, MCS_LTPSCTL, + 0x00, 0x45, 0x10, 0x10, 0x08, 0x32, 0x54, 0x00, + 0x00, 0x00, 0x00, 0x07, 0x06, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x48, 0x5e, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x03, 0x00, 0x00, 0x00, 0xad, 0x00, 0x00, + 0x08, 0x05, 0x2a, 0x54, 0x03, 0xcc, 0x00, 0xff, + 0xfb, 0x03, 0x0d, 0x00, 0x11, 0x0f, 0x02, 0x03, + 0x0b, 0x0c, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, + 0x13, 0x13, 0x13, 0x13, 0x00, 0x02, 0x03, 0x0b, + 0x0c, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, + 0x13, 0x13); + + /* sync the panel with the backlight's brightness level */ + mipi_dsi_dcs_write_buffer_multi(&dsi, s6e8aa5x01_cmds[lvl].gamma, GAMMA_CMD_LEN); + mipi_dsi_dcs_write_buffer_multi(&dsi, s6e8aa5x01_cmds[lvl].aid, AID_CMD_LEN); + mipi_dsi_dcs_write_seq_multi(&dsi, MCS_GAMMAUPD, 0x03); + + s6e8aa5x01_mcs_protect(&dsi, ctx, true); + + mipi_dsi_dcs_set_display_on_multi(&dsi); + + return dsi.accum_err; +} + +static int s6e8aa5x01_disable(struct drm_panel *panel) +{ + struct s6e8aa5x01_ctx *ctx = to_s6e8aa5x01_ctx(panel); + struct mipi_dsi_multi_context dsi = { .dsi = ctx->dsi }; + + mipi_dsi_dcs_set_display_off_multi(&dsi); + mipi_dsi_msleep(&dsi, 100); + + mipi_dsi_dcs_enter_sleep_mode_multi(&dsi); + mipi_dsi_msleep(&dsi, 150); + + return dsi.accum_err; +} + +static int s6e8aa5x01_get_modes(struct drm_panel *panel, + struct drm_connector *connector) +{ + struct s6e8aa5x01_ctx *ctx = to_s6e8aa5x01_ctx(panel); + struct drm_display_mode *mode; + + mode = drm_mode_duplicate(connector->dev, &ctx->mode); + if (!mode) + return -ENOMEM; + + mode->type |= DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; + drm_mode_probed_add(connector, mode); + drm_mode_set_name(mode); + + connector->display_info.width_mm = mode->width_mm; + connector->display_info.height_mm = mode->height_mm; + connector->display_info.bus_flags = ctx->bus_flags; + + return 1; +} + +static const struct backlight_ops s6e8aa5x01_bl_ops = { + .update_status = s6e8aa5x01_update_brightness, +}; + +static const struct drm_panel_funcs s6e8aa5x01_panel_funcs = { + .prepare = s6e8aa5x01_prepare, + .unprepare = s6e8aa5x01_unprepare, + .enable = s6e8aa5x01_enable, + .disable = s6e8aa5x01_disable, + .get_modes = s6e8aa5x01_get_modes, +}; + +static int s6e8aa5x01_probe(struct mipi_dsi_device *dsi) +{ + struct device *dev = &dsi->dev; + struct s6e8aa5x01_ctx *ctx; + int ret; + + ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return -ENOMEM; + + ctx->dsi = dsi; + mipi_dsi_set_drvdata(dsi, ctx); + + ctx->supplies[0].supply = "vdd"; + ctx->supplies[1].supply = "vci"; + ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies), + ctx->supplies); + if (ret < 0) + return dev_err_probe(dev, ret, "Failed to get regulators\n"); + + ctx->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_ASIS); + if (IS_ERR(ctx->reset_gpio)) + return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio), + "Failed to get reset-gpios\n"); + + ret = devm_mutex_init(dev, &ctx->mcs_mutex); + if (ret < 0) + return dev_err_probe(dev, ret, "Failed to initialize mutex object\n"); + + ret = of_get_drm_panel_display_mode(dev->of_node, &ctx->mode, + &ctx->bus_flags); + if (ret < 0) + return dev_err_probe(dev, ret, "Failed to get panel timings\n"); + + ctx->backlight = devm_backlight_device_register(dev, dev_name(dev), dev, + dsi, &s6e8aa5x01_bl_ops, + NULL); + if (IS_ERR(ctx->backlight)) + return dev_err_probe(dev, PTR_ERR(ctx->backlight), + "Failed to register backlight device\n"); + + ctx->backlight->props.type = BACKLIGHT_PLATFORM; + ctx->backlight->props.brightness = ARRAY_SIZE(s6e8aa5x01_cmds) - 1; + ctx->backlight->props.max_brightness = ARRAY_SIZE(s6e8aa5x01_cmds) - 1; + + dsi->lanes = 4; + dsi->format = MIPI_DSI_FMT_RGB888; + dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST | + MIPI_DSI_MODE_VIDEO_NO_HFP; + + drm_panel_init(&ctx->panel, dev, &s6e8aa5x01_panel_funcs, + DRM_MODE_CONNECTOR_DSI); + ctx->panel.prepare_prev_first = true; + + drm_panel_add(&ctx->panel); + + ret = devm_mipi_dsi_attach(dev, dsi); + if (ret < 0) { + drm_panel_remove(&ctx->panel); + return dev_err_probe(dev, ret, "Failed to attach to DSI host\n"); + } + + return 0; +} + +static void s6e8aa5x01_remove(struct mipi_dsi_device *dsi) +{ + struct s6e8aa5x01_ctx *ctx = mipi_dsi_get_drvdata(dsi); + + drm_panel_remove(&ctx->panel); +} + +static const struct of_device_id s6e8aa5x01_of_device_id[] = { + { .compatible = "samsung,s6e8aa5x01" }, + { } +}; +MODULE_DEVICE_TABLE(of, s6e8aa5x01_of_device_id); + +static struct mipi_dsi_driver s6e8aa5x01_dsi_driver = { + .probe = s6e8aa5x01_probe, + .remove = s6e8aa5x01_remove, + .driver = { + .name = "panel-samsung-s6e8aa5x01", + .of_match_table = s6e8aa5x01_of_device_id, + }, +}; +module_mipi_dsi_driver(s6e8aa5x01_dsi_driver); + +MODULE_AUTHOR("Kaustabh Chakraborty <[email protected]>"); +MODULE_DESCRIPTION("Samsung S6E8AA5X01 Display Panel Driver"); +MODULE_LICENSE("GPL"); -- 2.49.0
