diff options
| -rw-r--r-- | drivers/gpu/drm/panel/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/panel/panel-samsung-s6e88a0-ams427ap24.c | 532 |
2 files changed, 521 insertions, 12 deletions
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index f8adc38447fb..d7469c565d1d 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -636,6 +636,7 @@ config DRM_PANEL_SAMSUNG_S6E88A0_AMS427AP24 tristate "Samsung AMS427AP24 panel with S6E88A0 controller" 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 AMS427AP24 panel with S6E88A0 controller (found in Samsung Galaxy S4 Mini Value Edition diff --git a/drivers/gpu/drm/panel/panel-samsung-s6e88a0-ams427ap24.c b/drivers/gpu/drm/panel/panel-samsung-s6e88a0-ams427ap24.c index 8e4d012667d7..4b8aa088f445 100644 --- a/drivers/gpu/drm/panel/panel-samsung-s6e88a0-ams427ap24.c +++ b/drivers/gpu/drm/panel/panel-samsung-s6e88a0-ams427ap24.c @@ -4,6 +4,7 @@ * Copyright (c) 2024 Jakob Hauser <jahau@rocketmail.com> */ +#include <linux/backlight.h> #include <linux/delay.h> #include <linux/gpio/consumer.h> #include <linux/module.h> @@ -16,8 +17,24 @@ #include <drm/drm_panel.h> #include <drm/drm_probe_helper.h> +#define NUM_STEPS_CANDELA 54 +#define NUM_STEPS_AID 39 +#define NUM_STEPS_ELVSS 17 + +/* length of the payload data, thereof fixed and variable */ +#define FIX_LEN_AID 4 +#define FIX_LEN_ELVSS 2 +#define FIX_LEN_GAMMA 1 +#define VAR_LEN_AID 2 +#define VAR_LEN_ELVSS 1 +#define VAR_LEN_GAMMA 33 +#define LEN_AID (FIX_LEN_AID + VAR_LEN_AID) +#define LEN_ELVSS (FIX_LEN_ELVSS + VAR_LEN_ELVSS) +#define LEN_GAMMA (FIX_LEN_GAMMA + VAR_LEN_GAMMA) + struct s6e88a0_ams427ap24 { struct drm_panel panel; + struct backlight_device *bl_dev; struct mipi_dsi_device *dsi; struct regulator_bulk_data *supplies; struct gpio_desc *reset_gpio; @@ -34,6 +51,470 @@ struct s6e88a0_ams427ap24 *to_s6e88a0_ams427ap24(struct drm_panel *panel) return container_of(panel, struct s6e88a0_ams427ap24, panel); } +enum candela { + CANDELA_10CD, /* 0 */ + CANDELA_11CD, + CANDELA_12CD, + CANDELA_13CD, + CANDELA_14CD, + CANDELA_15CD, + CANDELA_16CD, + CANDELA_17CD, + CANDELA_19CD, + CANDELA_20CD, + CANDELA_21CD, + CANDELA_22CD, + CANDELA_24CD, + CANDELA_25CD, + CANDELA_27CD, + CANDELA_29CD, + CANDELA_30CD, + CANDELA_32CD, + CANDELA_34CD, + CANDELA_37CD, + CANDELA_39CD, + CANDELA_41CD, + CANDELA_44CD, + CANDELA_47CD, + CANDELA_50CD, + CANDELA_53CD, + CANDELA_56CD, + CANDELA_60CD, + CANDELA_64CD, + CANDELA_68CD, + CANDELA_72CD, + CANDELA_77CD, + CANDELA_82CD, + CANDELA_87CD, + CANDELA_93CD, + CANDELA_98CD, + CANDELA_105CD, + CANDELA_111CD, + CANDELA_119CD, + CANDELA_126CD, + CANDELA_134CD, + CANDELA_143CD, + CANDELA_152CD, + CANDELA_162CD, + CANDELA_172CD, + CANDELA_183CD, + CANDELA_195CD, + CANDELA_207CD, + CANDELA_220CD, + CANDELA_234CD, + CANDELA_249CD, + CANDELA_265CD, + CANDELA_282CD, + CANDELA_300CD, /* 53 */ +}; + +static const int s6e88a0_ams427ap24_br_to_cd[NUM_STEPS_CANDELA] = { + /* columns: brightness from, brightness till, candela */ + /* 0 */ 10, /* 10CD */ + /* 11 */ 11, /* 11CD */ + /* 12 */ 12, /* 12CD */ + /* 13 */ 13, /* 13CD */ + /* 14 */ 14, /* 14CD */ + /* 15 */ 15, /* 15CD */ + /* 16 */ 16, /* 16CD */ + /* 17 */ 17, /* 17CD */ + /* 18 */ 18, /* 19CD */ + /* 19 */ 19, /* 20CD */ + /* 20 */ 20, /* 21CD */ + /* 21 */ 21, /* 22CD */ + /* 22 */ 22, /* 24CD */ + /* 23 */ 23, /* 25CD */ + /* 24 */ 24, /* 27CD */ + /* 25 */ 25, /* 29CD */ + /* 26 */ 26, /* 30CD */ + /* 27 */ 27, /* 32CD */ + /* 28 */ 28, /* 34CD */ + /* 29 */ 29, /* 37CD */ + /* 30 */ 30, /* 39CD */ + /* 31 */ 32, /* 41CD */ + /* 33 */ 34, /* 44CD */ + /* 35 */ 36, /* 47CD */ + /* 37 */ 38, /* 50CD */ + /* 39 */ 40, /* 53CD */ + /* 41 */ 43, /* 56CD */ + /* 44 */ 46, /* 60CD */ + /* 47 */ 49, /* 64CD */ + /* 50 */ 52, /* 68CD */ + /* 53 */ 56, /* 72CD */ + /* 57 */ 59, /* 77CD */ + /* 60 */ 63, /* 82CD */ + /* 64 */ 67, /* 87CD */ + /* 68 */ 71, /* 93CD */ + /* 72 */ 76, /* 98CD */ + /* 77 */ 80, /* 105CD */ + /* 81 */ 86, /* 111CD */ + /* 87 */ 91, /* 119CD */ + /* 92 */ 97, /* 126CD */ + /* 98 */ 104, /* 134CD */ + /* 105 */ 110, /* 143CD */ + /* 111 */ 118, /* 152CD */ + /* 119 */ 125, /* 162CD */ + /* 126 */ 133, /* 172CD */ + /* 134 */ 142, /* 183CD */ + /* 143 */ 150, /* 195CD */ + /* 151 */ 160, /* 207CD */ + /* 161 */ 170, /* 220CD */ + /* 171 */ 181, /* 234CD */ + /* 182 */ 205, /* 249CD */ + /* 206 */ 234, /* 265CD */ + /* 235 */ 254, /* 282CD */ + /* 255 */ 255, /* 300CD */ +}; + +static const u8 s6e88a0_ams427ap24_aid[NUM_STEPS_AID][VAR_LEN_AID] = { + { 0x03, 0x77 }, /* AOR 90.9%, 10CD */ + { 0x03, 0x73 }, /* AOR 90.5%, 11CD */ + { 0x03, 0x69 }, /* AOR 89.4%, 12CD */ + { 0x03, 0x65 }, /* AOR 89.0%, 13CD */ + { 0x03, 0x61 }, /* AOR 88.6%, 14CD */ + { 0x03, 0x55 }, /* AOR 87.4%, 15CD */ + { 0x03, 0x50 }, /* AOR 86.9%, 16CD */ + { 0x03, 0x45 }, /* AOR 85.8%, 17CD */ + { 0x03, 0x35 }, /* AOR 84.1%, 19CD */ + { 0x03, 0x27 }, /* AOR 82.7%, 20CD */ + { 0x03, 0x23 }, /* AOR 82.3%, 21CD */ + { 0x03, 0x17 }, /* AOR 81.0%, 22CD */ + { 0x03, 0x11 }, /* AOR 80.4%, 24CD */ + { 0x03, 0x04 }, /* AOR 79.1%, 25CD */ + { 0x02, 0xf4 }, /* AOR 77.5%, 27CD */ + { 0x02, 0xe3 }, /* AOR 75.7%, 29CD */ + { 0x02, 0xd7 }, /* AOR 74.5%, 30CD */ + { 0x02, 0xc6 }, /* AOR 72.7%, 32CD */ + { 0x02, 0xb7 }, /* AOR 71.2%, 34CD */ + { 0x02, 0xa1 }, /* AOR 69.0%, 37CD */ + { 0x02, 0x91 }, /* AOR 67.3%, 39CD */ + { 0x02, 0x78 }, /* AOR 64.8%, 41CD */ + { 0x02, 0x62 }, /* AOR 62.5%, 44CD */ + { 0x02, 0x45 }, /* AOR 59.5%, 47CD */ + { 0x02, 0x30 }, /* AOR 57.4%, 50CD */ + { 0x02, 0x13 }, /* AOR 54.4%, 53CD */ + { 0x01, 0xf5 }, /* AOR 51.3%, 56CD */ + { 0x01, 0xd3 }, /* AOR 47.8%, 60CD */ + { 0x01, 0xb1 }, /* AOR 44.4%, 64CD */ + { 0x01, 0x87 }, /* AOR 40.1%, 68CD */ + { 0x01, 0x63 }, /* AOR 36.6%, 72CD */ + { 0x01, 0x35 }, /* AOR 31.7%, 77CD */ + { 0x01, 0x05 }, /* AOR 26.9%, 82CD */ + { 0x00, 0xd5 }, /* AOR 21.8%, 87CD */ + { 0x00, 0xa1 }, /* AOR 16.5%, 93CD */ + { 0x00, 0x6f }, /* AOR 11.4%, 98CD */ + { 0x00, 0x31 }, /* AOR 5.0%, 105CD */ + { 0x01, 0x86 }, /* AOR 40.0%, 111CD ~ 172CD */ + { 0x00, 0x08 }, /* AOR 0.6%, 183CD ~ 300CD */ +}; + +static const u8 s6e88a0_ams427ap24_elvss[NUM_STEPS_ELVSS][VAR_LEN_ELVSS] = { + { 0x14 }, /* 10CD ~ 111CD */ + { 0x13 }, /* 119CD */ + { 0x12 }, /* 126CD */ + { 0x12 }, /* 134CD */ + { 0x11 }, /* 143CD */ + { 0x10 }, /* 152CD */ + { 0x0f }, /* 162CD */ + { 0x0e }, /* 172CD */ + { 0x11 }, /* 183CD */ + { 0x11 }, /* 195CD */ + { 0x10 }, /* 207CD */ + { 0x0f }, /* 220CD */ + { 0x0f }, /* 234CD */ + { 0x0e }, /* 249CD */ + { 0x0d }, /* 265CD */ + { 0x0c }, /* 282CD */ + { 0x0b }, /* 300CD */ +}; + +static const u8 s6e88a0_ams427ap24_gamma[NUM_STEPS_CANDELA][VAR_LEN_GAMMA] = { + /* 10CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8c, 0x8a, 0x8a, 0x8c, 0x8b, + 0x8c, 0x87, 0x89, 0x89, 0x88, 0x87, 0x8c, 0x80, 0x82, 0x88, 0x7b, + 0x72, 0x8c, 0x60, 0x68, 0x8c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, + /* 11CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8c, 0x8a, 0x8a, 0x8c, 0x8b, + 0x8c, 0x87, 0x89, 0x89, 0x88, 0x87, 0x8c, 0x80, 0x82, 0x88, 0x7b, + 0x72, 0x8c, 0x60, 0x68, 0x8c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, + /* 12CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8c, 0x8a, 0x8a, 0x8b, 0x8b, + 0x8c, 0x88, 0x89, 0x8a, 0x88, 0x87, 0x8c, 0x81, 0x82, 0x87, 0x7a, + 0x72, 0x8b, 0x60, 0x68, 0x8c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, + /* 13CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8c, 0x8a, 0x8a, 0x8b, 0x8b, + 0x8c, 0x88, 0x89, 0x8a, 0x88, 0x87, 0x8c, 0x81, 0x82, 0x87, 0x7a, + 0x72, 0x8b, 0x61, 0x69, 0x8c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, + /* 14CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8c, 0x8a, 0x89, 0x8c, 0x8b, + 0x8c, 0x88, 0x89, 0x8a, 0x87, 0x86, 0x8a, 0x82, 0x82, 0x87, 0x79, + 0x71, 0x89, 0x63, 0x6c, 0x8e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, + /* 15CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8c, 0x8a, 0x8a, 0x8c, 0x8c, + 0x8c, 0x86, 0x87, 0x88, 0x85, 0x85, 0x8a, 0x83, 0x83, 0x88, 0x78, + 0x72, 0x89, 0x64, 0x6c, 0x8e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, + /* 16CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8c, 0x8a, 0x89, 0x8c, 0x8b, + 0x8c, 0x86, 0x88, 0x88, 0x86, 0x86, 0x8a, 0x84, 0x84, 0x88, 0x78, + 0x72, 0x89, 0x5d, 0x67, 0x8b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, + /* 17CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8c, 0x8a, 0x89, 0x8b, 0x8b, + 0x8b, 0x87, 0x89, 0x89, 0x86, 0x86, 0x8a, 0x84, 0x83, 0x87, 0x78, + 0x73, 0x89, 0x64, 0x6e, 0x8e, 0x38, 0x32, 0x24, 0x00, 0x00, 0x00 }, + /* 19CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8c, 0x8a, 0x89, 0x8b, 0x8b, + 0x8b, 0x87, 0x89, 0x89, 0x86, 0x86, 0x89, 0x84, 0x84, 0x87, 0x77, + 0x72, 0x88, 0x65, 0x6f, 0x8e, 0x38, 0x32, 0x24, 0x00, 0x00, 0x00 }, + /* 20CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8c, 0x8a, 0x89, 0x8b, 0x8b, + 0x8b, 0x88, 0x89, 0x89, 0x85, 0x85, 0x88, 0x82, 0x83, 0x85, 0x79, + 0x73, 0x88, 0x65, 0x6f, 0x8e, 0x38, 0x32, 0x24, 0x00, 0x00, 0x00 }, + /* 21CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8c, 0x8a, 0x89, 0x8b, 0x8b, + 0x8b, 0x88, 0x89, 0x89, 0x85, 0x85, 0x88, 0x82, 0x83, 0x85, 0x79, + 0x74, 0x88, 0x65, 0x6f, 0x8e, 0x38, 0x32, 0x24, 0x00, 0x00, 0x00 }, + /* 22CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8c, 0x8a, 0x89, 0x8c, 0x8b, + 0x8c, 0x86, 0x88, 0x87, 0x86, 0x86, 0x89, 0x82, 0x83, 0x85, 0x7c, + 0x75, 0x87, 0x65, 0x6f, 0x8e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, + /* 24CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8c, 0x8a, 0x89, 0x8c, 0x8b, + 0x8c, 0x86, 0x88, 0x87, 0x86, 0x86, 0x89, 0x82, 0x83, 0x85, 0x7c, + 0x76, 0x86, 0x66, 0x6f, 0x8e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, + /* 25CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8c, 0x8a, 0x89, 0x8b, 0x8b, + 0x8b, 0x86, 0x89, 0x88, 0x87, 0x87, 0x89, 0x82, 0x82, 0x84, 0x7f, + 0x7a, 0x89, 0x6b, 0x73, 0x8f, 0x33, 0x2f, 0x22, 0x00, 0x00, 0x00 }, + /* 27CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8c, 0x8a, 0x89, 0x8b, 0x8b, + 0x8b, 0x86, 0x89, 0x88, 0x87, 0x87, 0x89, 0x82, 0x82, 0x84, 0x7f, + 0x7a, 0x89, 0x6b, 0x73, 0x8f, 0x33, 0x2f, 0x22, 0x00, 0x00, 0x00 }, + /* 29CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8c, 0x8a, 0x89, 0x8b, 0x8b, + 0x8b, 0x86, 0x89, 0x88, 0x85, 0x84, 0x87, 0x84, 0x85, 0x86, 0x80, + 0x7b, 0x88, 0x6a, 0x73, 0x8f, 0x33, 0x2f, 0x22, 0x00, 0x00, 0x00 }, + /* 30CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8c, 0x8a, 0x89, 0x8b, 0x8b, + 0x8b, 0x86, 0x89, 0x88, 0x85, 0x84, 0x87, 0x84, 0x85, 0x86, 0x80, + 0x7b, 0x88, 0x6a, 0x73, 0x8f, 0x33, 0x2f, 0x22, 0x00, 0x00, 0x00 }, + /* 32CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8c, 0x8a, 0x89, 0x8b, 0x8b, + 0x8b, 0x86, 0x89, 0x88, 0x85, 0x84, 0x87, 0x84, 0x85, 0x86, 0x80, + 0x7b, 0x88, 0x6a, 0x73, 0x8f, 0x33, 0x2f, 0x22, 0x00, 0x00, 0x00 }, + /* 34CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8c, 0x8a, 0x89, 0x8b, 0x8b, + 0x8b, 0x86, 0x89, 0x88, 0x85, 0x84, 0x87, 0x83, 0x84, 0x84, 0x7f, + 0x79, 0x86, 0x6c, 0x76, 0x91, 0x33, 0x2f, 0x22, 0x00, 0x00, 0x00 }, + /* 37CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8b, 0x89, 0x89, 0x8b, 0x8b, + 0x8b, 0x86, 0x88, 0x88, 0x87, 0x86, 0x87, 0x83, 0x84, 0x84, 0x7f, + 0x79, 0x86, 0x6c, 0x76, 0x90, 0x33, 0x2f, 0x22, 0x00, 0x00, 0x00 }, + /* 39CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8b, 0x89, 0x89, 0x8b, 0x8b, + 0x8b, 0x86, 0x88, 0x87, 0x84, 0x84, 0x86, 0x83, 0x85, 0x85, 0x80, + 0x79, 0x85, 0x6c, 0x76, 0x90, 0x33, 0x2f, 0x22, 0x00, 0x00, 0x00 }, + /* 41CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8b, 0x89, 0x89, 0x8b, 0x8b, + 0x8b, 0x86, 0x88, 0x87, 0x84, 0x84, 0x86, 0x81, 0x84, 0x83, 0x7f, + 0x79, 0x84, 0x6e, 0x79, 0x93, 0x33, 0x2f, 0x22, 0x00, 0x00, 0x00 }, + /* 44CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8b, 0x89, 0x89, 0x8b, 0x8b, + 0x8b, 0x86, 0x88, 0x87, 0x84, 0x84, 0x86, 0x81, 0x84, 0x83, 0x7f, + 0x79, 0x84, 0x6e, 0x79, 0x92, 0x33, 0x2f, 0x22, 0x00, 0x00, 0x00 }, + /* 47CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8b, 0x89, 0x89, 0x8b, 0x8b, + 0x8b, 0x86, 0x88, 0x87, 0x84, 0x85, 0x86, 0x81, 0x84, 0x83, 0x7f, + 0x79, 0x83, 0x6f, 0x79, 0x91, 0x33, 0x2f, 0x22, 0x00, 0x00, 0x00 }, + /* 50CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8b, 0x89, 0x89, 0x8b, 0x8b, + 0x8b, 0x86, 0x88, 0x87, 0x84, 0x85, 0x86, 0x82, 0x84, 0x83, 0x7f, + 0x79, 0x83, 0x6f, 0x79, 0x90, 0x33, 0x2f, 0x22, 0x00, 0x00, 0x00 }, + /* 53CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8b, 0x89, 0x89, 0x8b, 0x8b, + 0x8b, 0x86, 0x88, 0x87, 0x83, 0x83, 0x85, 0x84, 0x85, 0x85, 0x7f, + 0x79, 0x83, 0x70, 0x79, 0x8f, 0x33, 0x2f, 0x22, 0x00, 0x00, 0x00 }, + /* 56CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8b, 0x89, 0x89, 0x8b, 0x8a, + 0x8a, 0x87, 0x89, 0x87, 0x83, 0x83, 0x85, 0x84, 0x85, 0x84, 0x7f, + 0x79, 0x82, 0x70, 0x7a, 0x8e, 0x33, 0x2f, 0x22, 0x00, 0x00, 0x00 }, + /* 60CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8b, 0x89, 0x89, 0x8b, 0x8a, + 0x8a, 0x87, 0x89, 0x87, 0x83, 0x83, 0x85, 0x84, 0x85, 0x84, 0x7e, + 0x79, 0x82, 0x71, 0x7a, 0x8d, 0x33, 0x2f, 0x22, 0x00, 0x00, 0x00 }, + /* 64CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8b, 0x89, 0x89, 0x8b, 0x8a, + 0x8a, 0x86, 0x88, 0x86, 0x84, 0x84, 0x86, 0x82, 0x83, 0x82, 0x80, + 0x7a, 0x84, 0x71, 0x7a, 0x8c, 0x33, 0x2f, 0x22, 0x00, 0x00, 0x00 }, + /* 68CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8a, 0x89, 0x89, 0x8c, 0x8a, + 0x8a, 0x86, 0x88, 0x86, 0x84, 0x84, 0x86, 0x82, 0x84, 0x82, 0x81, + 0x7b, 0x83, 0x72, 0x7b, 0x8b, 0x33, 0x2f, 0x22, 0x00, 0x00, 0x00 }, + /* 72CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8a, 0x89, 0x89, 0x8c, 0x8a, + 0x8a, 0x86, 0x88, 0x86, 0x85, 0x85, 0x86, 0x82, 0x84, 0x82, 0x81, + 0x7b, 0x83, 0x72, 0x7c, 0x8a, 0x33, 0x2f, 0x22, 0x00, 0x00, 0x00 }, + /* 77CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8a, 0x89, 0x89, 0x8c, 0x8a, + 0x8a, 0x85, 0x87, 0x85, 0x85, 0x87, 0x87, 0x82, 0x84, 0x82, 0x81, + 0x7c, 0x82, 0x72, 0x7c, 0x89, 0x33, 0x2f, 0x22, 0x00, 0x00, 0x00 }, + /* 82CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8a, 0x89, 0x89, 0x8c, 0x8a, + 0x8a, 0x85, 0x87, 0x85, 0x85, 0x87, 0x87, 0x82, 0x84, 0x82, 0x81, + 0x7c, 0x82, 0x73, 0x7c, 0x88, 0x33, 0x2f, 0x22, 0x00, 0x00, 0x00 }, + /* 87CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8a, 0x89, 0x89, 0x8c, 0x8a, + 0x8a, 0x85, 0x87, 0x85, 0x84, 0x84, 0x86, 0x80, 0x84, 0x81, 0x80, + 0x7a, 0x82, 0x76, 0x7f, 0x89, 0x33, 0x2f, 0x22, 0x00, 0x00, 0x00 }, + /* 93CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8a, 0x89, 0x89, 0x8b, 0x8a, + 0x8a, 0x86, 0x87, 0x85, 0x84, 0x85, 0x86, 0x80, 0x84, 0x80, 0x80, + 0x7a, 0x82, 0x76, 0x80, 0x88, 0x33, 0x2f, 0x22, 0x00, 0x00, 0x00 }, + /* 98CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x8a, 0x89, 0x89, 0x8b, 0x8a, + 0x8a, 0x86, 0x87, 0x85, 0x85, 0x85, 0x86, 0x80, 0x84, 0x80, 0x80, + 0x7a, 0x82, 0x76, 0x80, 0x88, 0x33, 0x2f, 0x22, 0x00, 0x00, 0x00 }, + /* 105CD */ + { 0x00, 0xc8, 0x00, 0xc4, 0x00, 0xc5, 0x89, 0x88, 0x88, 0x8b, 0x8a, + 0x8a, 0x84, 0x87, 0x85, 0x85, 0x85, 0x85, 0x80, 0x84, 0x80, 0x7f, + 0x79, 0x81, 0x71, 0x7d, 0x87, 0x38, 0x32, 0x24, 0x00, 0x00, 0x00 }, + /* 111CD */ + { 0x00, 0xdf, 0x00, 0xde, 0x00, 0xde, 0x85, 0x85, 0x84, 0x87, 0x86, + 0x87, 0x85, 0x86, 0x85, 0x83, 0x83, 0x83, 0x81, 0x82, 0x82, 0x80, + 0x7d, 0x82, 0x75, 0x7f, 0x86, 0x85, 0x85, 0x82, 0x00, 0x00, 0x00 }, + /* 119CD */ + { 0x00, 0xe3, 0x00, 0xe1, 0x00, 0xe2, 0x85, 0x85, 0x84, 0x86, 0x85, + 0x85, 0x84, 0x85, 0x84, 0x83, 0x83, 0x83, 0x82, 0x82, 0x82, 0x7e, + 0x7b, 0x81, 0x75, 0x7f, 0x86, 0x85, 0x85, 0x82, 0x00, 0x00, 0x00 }, + /* 126CD */ + { 0x00, 0xe6, 0x00, 0xe5, 0x00, 0xe5, 0x85, 0x84, 0x84, 0x85, 0x85, + 0x85, 0x84, 0x84, 0x84, 0x82, 0x83, 0x83, 0x80, 0x81, 0x81, 0x80, + 0x7f, 0x83, 0x73, 0x7c, 0x84, 0x85, 0x85, 0x82, 0x00, 0x00, 0x00 }, + /* 134CD */ + { 0x00, 0xe9, 0x00, 0xe8, 0x00, 0xe8, 0x84, 0x84, 0x83, 0x85, 0x85, + 0x85, 0x84, 0x84, 0x83, 0x81, 0x82, 0x82, 0x81, 0x81, 0x81, 0x7f, + 0x7d, 0x81, 0x73, 0x7c, 0x83, 0x85, 0x85, 0x82, 0x00, 0x00, 0x00 }, + /* 143CD */ + { 0x00, 0xed, 0x00, 0xec, 0x00, 0xec, 0x84, 0x83, 0x83, 0x84, 0x84, + 0x84, 0x84, 0x84, 0x83, 0x82, 0x83, 0x83, 0x81, 0x80, 0x81, 0x7f, + 0x7e, 0x81, 0x70, 0x79, 0x81, 0x85, 0x85, 0x82, 0x00, 0x00, 0x00 }, + /* 152CD */ + { 0x00, 0xf0, 0x00, 0xf0, 0x00, 0xf0, 0x83, 0x83, 0x83, 0x83, 0x83, + 0x83, 0x84, 0x84, 0x83, 0x81, 0x81, 0x81, 0x80, 0x80, 0x81, 0x80, + 0x80, 0x82, 0x6f, 0x78, 0x7f, 0x85, 0x85, 0x82, 0x00, 0x00, 0x00 }, + /* 162CD */ + { 0x00, 0xf4, 0x00, 0xf3, 0x00, 0xf4, 0x83, 0x83, 0x83, 0x83, 0x83, + 0x83, 0x82, 0x81, 0x81, 0x81, 0x81, 0x81, 0x80, 0x80, 0x81, 0x80, + 0x7f, 0x82, 0x6f, 0x78, 0x7f, 0x85, 0x85, 0x82, 0x00, 0x00, 0x00 }, + /* 172CD */ + { 0x00, 0xf8, 0x00, 0xf8, 0x00, 0xf8, 0x82, 0x82, 0x82, 0x82, 0x82, + 0x82, 0x82, 0x81, 0x81, 0x80, 0x81, 0x80, 0x80, 0x80, 0x81, 0x81, + 0x80, 0x83, 0x6d, 0x76, 0x7d, 0x85, 0x85, 0x82, 0x00, 0x00, 0x00 }, + /* 183CD */ + { 0x00, 0xe0, 0x00, 0xdf, 0x00, 0xdf, 0x84, 0x84, 0x83, 0x86, 0x86, + 0x86, 0x83, 0x84, 0x83, 0x82, 0x82, 0x82, 0x81, 0x83, 0x81, 0x81, + 0x7e, 0x81, 0x80, 0x82, 0x84, 0x85, 0x85, 0x82, 0x00, 0x00, 0x00 }, + /* 195CD */ + { 0x00, 0xe4, 0x00, 0xe3, 0x00, 0xe3, 0x84, 0x83, 0x83, 0x85, 0x85, + 0x85, 0x83, 0x84, 0x83, 0x81, 0x82, 0x82, 0x82, 0x83, 0x81, 0x81, + 0x80, 0x82, 0x7d, 0x7f, 0x81, 0x85, 0x85, 0x82, 0x00, 0x00, 0x00 }, + /* 207CD */ + { 0x00, 0xe7, 0x00, 0xe6, 0x00, 0xe6, 0x83, 0x82, 0x82, 0x85, 0x85, + 0x85, 0x82, 0x83, 0x83, 0x82, 0x82, 0x82, 0x80, 0x81, 0x80, 0x81, + 0x80, 0x82, 0x7d, 0x7f, 0x81, 0x85, 0x85, 0x82, 0x00, 0x00, 0x00 }, + /* 220CD */ + { 0x00, 0xeb, 0x00, 0xea, 0x00, 0xea, 0x83, 0x83, 0x82, 0x84, 0x84, + 0x84, 0x82, 0x83, 0x82, 0x81, 0x81, 0x82, 0x81, 0x82, 0x81, 0x80, + 0x7e, 0x80, 0x7d, 0x7f, 0x81, 0x85, 0x85, 0x82, 0x00, 0x00, 0x00 }, + /* 234CD */ + { 0x00, 0xef, 0x00, 0xee, 0x00, 0xee, 0x83, 0x82, 0x82, 0x83, 0x83, + 0x83, 0x82, 0x82, 0x82, 0x81, 0x81, 0x81, 0x80, 0x80, 0x80, 0x80, + 0x80, 0x81, 0x7b, 0x7c, 0x7f, 0x85, 0x85, 0x82, 0x00, 0x00, 0x00 }, + /* 249CD */ + { 0x00, 0xf3, 0x00, 0xf2, 0x00, 0xf2, 0x82, 0x81, 0x81, 0x83, 0x83, + 0x83, 0x82, 0x82, 0x82, 0x81, 0x81, 0x81, 0x80, 0x81, 0x80, 0x7f, + 0x7e, 0x7f, 0x7b, 0x7c, 0x7f, 0x85, 0x85, 0x82, 0x00, 0x00, 0x00 }, + /* 265CD */ + { 0x00, 0xf7, 0x00, 0xf7, 0x00, 0xf7, 0x81, 0x81, 0x80, 0x82, 0x82, + 0x82, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x81, 0x80, 0x7f, + 0x7e, 0x7f, 0x7b, 0x7c, 0x7f, 0x85, 0x85, 0x82, 0x00, 0x00, 0x00 }, + /* 282CD */ + { 0x00, 0xfb, 0x00, 0xfb, 0x00, 0xfb, 0x80, 0x80, 0x80, 0x81, 0x81, + 0x81, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x7f, 0x7f, 0x7f, 0x7f, + 0x7f, 0x7f, 0x78, 0x79, 0x7d, 0x85, 0x85, 0x82, 0x00, 0x00, 0x00 }, + /* 300CD */ + { 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 }, +}; + +static int s6e88a0_ams427ap24_set_brightness(struct backlight_device *bd) +{ + struct s6e88a0_ams427ap24 *ctx = bl_get_data(bd); + struct mipi_dsi_device *dsi = ctx->dsi; + struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi }; + struct device *dev = &dsi->dev; + int brightness = bd->props.brightness; + int candela_enum; + u8 b2[LEN_AID] = { 0xb2, 0x40, 0x08, 0x20, 0x00, 0x00 }; + u8 b6[LEN_ELVSS] = { 0xb6, 0x28, 0x00 }; + u8 ca[LEN_GAMMA]; + + /* get candela enum from brightness */ + for (candela_enum = 0; candela_enum < NUM_STEPS_CANDELA; candela_enum++) + if (brightness <= s6e88a0_ams427ap24_br_to_cd[candela_enum]) + break; + + /* get aid */ + switch (candela_enum) { + case CANDELA_10CD ... CANDELA_105CD: + memcpy(&b2[FIX_LEN_AID], + s6e88a0_ams427ap24_aid[candela_enum], + VAR_LEN_AID); + break; + case CANDELA_111CD ... CANDELA_172CD: + memcpy(&b2[FIX_LEN_AID], + s6e88a0_ams427ap24_aid[CANDELA_111CD], + VAR_LEN_AID); + break; + case CANDELA_183CD ... CANDELA_300CD: + memcpy(&b2[FIX_LEN_AID], + s6e88a0_ams427ap24_aid[CANDELA_111CD + 1], + VAR_LEN_AID); + break; + default: + dev_err(dev, "Failed to get aid data\n"); + return -EINVAL; + } + + /* get elvss */ + if (candela_enum <= CANDELA_111CD) { + memcpy(&b6[FIX_LEN_ELVSS], + s6e88a0_ams427ap24_elvss[0], + VAR_LEN_ELVSS); + } else { + memcpy(&b6[FIX_LEN_ELVSS], + s6e88a0_ams427ap24_elvss[candela_enum - CANDELA_111CD], + VAR_LEN_ELVSS); + } + + /* get gamma */ + ca[0] = 0xca; + memcpy(&ca[FIX_LEN_GAMMA], + s6e88a0_ams427ap24_gamma[candela_enum], + VAR_LEN_GAMMA); + + /* write data */ + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf0, 0x5a, 0x5a); // level 1 key on + mipi_dsi_dcs_write_buffer_multi(&dsi_ctx, b2, ARRAY_SIZE(b2)); // set aid + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x55, 0x00); // acl off + mipi_dsi_dcs_write_buffer_multi(&dsi_ctx, b6, ARRAY_SIZE(b6)); // set elvss + mipi_dsi_dcs_write_buffer_multi(&dsi_ctx, ca, ARRAY_SIZE(ca)); // set gamma + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf7, 0x03); // gamma update + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf0, 0xa5, 0xa5); // level 1 key off + + return dsi_ctx.accum_err; +} + static void s6e88a0_ams427ap24_reset(struct s6e88a0_ams427ap24 *ctx) { gpiod_set_value_cansleep(ctx->reset_gpio, 0); @@ -48,6 +529,8 @@ static int s6e88a0_ams427ap24_on(struct s6e88a0_ams427ap24 *ctx) { struct mipi_dsi_device *dsi = ctx->dsi; struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi }; + struct device *dev = &dsi->dev; + int ret; dsi->mode_flags |= MIPI_DSI_MODE_LPM; @@ -67,20 +550,15 @@ static int s6e88a0_ams427ap24_on(struct s6e88a0_ams427ap24 *ctx) mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xcc, 0x4c); // pixel clock divider pol. mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf2, 0x03, 0x0d); // unknown mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf1, 0xa5, 0xa5); // level 3 key off - mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xca, - 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); // set gamma - mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xb2, - 0x40, 0x08, 0x20, 0x00, 0x08); // set aid - mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xb6, 0x28, 0x0b); // set elvss - mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf7, 0x03); // gamma update - mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x55, 0x00); // acl off mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf0, 0xa5, 0xa5); // level 1 key off mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfc, 0xa5, 0xa5); // level 2 key off + ret = s6e88a0_ams427ap24_set_brightness(ctx->bl_dev); + if (ret < 0) { + dev_err(dev, "Failed to set brightness: %d\n", ret); + return ret; + } + mipi_dsi_dcs_set_display_on_multi(&dsi_ctx); return dsi_ctx.accum_err; @@ -172,6 +650,32 @@ static const struct drm_panel_funcs s6e88a0_ams427ap24_panel_funcs = { .get_modes = s6e88a0_ams427ap24_get_modes, }; +static const struct backlight_ops s6e88a0_ams427ap24_bl_ops = { + .update_status = s6e88a0_ams427ap24_set_brightness, +}; + +static int s6e88a0_ams427ap24_register_backlight(struct s6e88a0_ams427ap24 *ctx) +{ + struct backlight_properties props = { + .type = BACKLIGHT_RAW, + .brightness = 180, + .max_brightness = 255, + }; + struct mipi_dsi_device *dsi = ctx->dsi; + struct device *dev = &dsi->dev; + int ret = 0; + + ctx->bl_dev = devm_backlight_device_register(dev, dev_name(dev), dev, ctx, + &s6e88a0_ams427ap24_bl_ops, + &props); + if (IS_ERR(ctx->bl_dev)) { + ret = PTR_ERR(ctx->bl_dev); + dev_err(dev, "error registering backlight device (%d)\n", ret); + } + + return ret; +} + static int s6e88a0_ams427ap24_probe(struct mipi_dsi_device *dsi) { struct device *dev = &dsi->dev; @@ -200,12 +704,16 @@ static int s6e88a0_ams427ap24_probe(struct mipi_dsi_device *dsi) dsi->lanes = 2; dsi->format = MIPI_DSI_FMT_RGB888; dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST | - MIPI_DSI_MODE_NO_EOT_PACKET; + MIPI_DSI_MODE_NO_EOT_PACKET | MIPI_DSI_MODE_VIDEO_NO_HFP; drm_panel_init(&ctx->panel, dev, &s6e88a0_ams427ap24_panel_funcs, DRM_MODE_CONNECTOR_DSI); ctx->panel.prepare_prev_first = true; + ret = s6e88a0_ams427ap24_register_backlight(ctx); + if (ret < 0) + return ret; + drm_panel_add(&ctx->panel); ret = mipi_dsi_attach(dsi); |