1*bf0390e2SRichard Acayan // SPDX-License-Identifier: GPL-2.0-only 2*bf0390e2SRichard Acayan /* 3*bf0390e2SRichard Acayan * Driver for the Samsung S6E3FA7 panel. 4*bf0390e2SRichard Acayan * 5*bf0390e2SRichard Acayan * Copyright (c) 2022-2024, The Linux Foundation. All rights reserved. 6*bf0390e2SRichard Acayan * Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree: 7*bf0390e2SRichard Acayan * Copyright (c) 2013, The Linux Foundation. All rights reserved. 8*bf0390e2SRichard Acayan */ 9*bf0390e2SRichard Acayan 10*bf0390e2SRichard Acayan #include <linux/backlight.h> 11*bf0390e2SRichard Acayan #include <linux/delay.h> 12*bf0390e2SRichard Acayan #include <linux/gpio/consumer.h> 13*bf0390e2SRichard Acayan #include <linux/module.h> 14*bf0390e2SRichard Acayan #include <linux/of.h> 15*bf0390e2SRichard Acayan 16*bf0390e2SRichard Acayan #include <video/mipi_display.h> 17*bf0390e2SRichard Acayan 18*bf0390e2SRichard Acayan #include <drm/drm_mipi_dsi.h> 19*bf0390e2SRichard Acayan #include <drm/drm_modes.h> 20*bf0390e2SRichard Acayan #include <drm/drm_panel.h> 21*bf0390e2SRichard Acayan 22*bf0390e2SRichard Acayan struct s6e3fa7_panel { 23*bf0390e2SRichard Acayan struct drm_panel panel; 24*bf0390e2SRichard Acayan struct mipi_dsi_device *dsi; 25*bf0390e2SRichard Acayan struct gpio_desc *reset_gpio; 26*bf0390e2SRichard Acayan }; 27*bf0390e2SRichard Acayan 28*bf0390e2SRichard Acayan static inline struct s6e3fa7_panel *to_s6e3fa7_panel(struct drm_panel *panel) 29*bf0390e2SRichard Acayan { 30*bf0390e2SRichard Acayan return container_of(panel, struct s6e3fa7_panel, panel); 31*bf0390e2SRichard Acayan } 32*bf0390e2SRichard Acayan 33*bf0390e2SRichard Acayan static void s6e3fa7_panel_reset(struct s6e3fa7_panel *ctx) 34*bf0390e2SRichard Acayan { 35*bf0390e2SRichard Acayan gpiod_set_value_cansleep(ctx->reset_gpio, 1); 36*bf0390e2SRichard Acayan usleep_range(1000, 2000); 37*bf0390e2SRichard Acayan gpiod_set_value_cansleep(ctx->reset_gpio, 0); 38*bf0390e2SRichard Acayan usleep_range(10000, 11000); 39*bf0390e2SRichard Acayan } 40*bf0390e2SRichard Acayan 41*bf0390e2SRichard Acayan static int s6e3fa7_panel_on(struct s6e3fa7_panel *ctx) 42*bf0390e2SRichard Acayan { 43*bf0390e2SRichard Acayan struct mipi_dsi_device *dsi = ctx->dsi; 44*bf0390e2SRichard Acayan struct device *dev = &dsi->dev; 45*bf0390e2SRichard Acayan int ret; 46*bf0390e2SRichard Acayan 47*bf0390e2SRichard Acayan ret = mipi_dsi_dcs_exit_sleep_mode(dsi); 48*bf0390e2SRichard Acayan if (ret < 0) { 49*bf0390e2SRichard Acayan dev_err(dev, "Failed to exit sleep mode: %d\n", ret); 50*bf0390e2SRichard Acayan return ret; 51*bf0390e2SRichard Acayan } 52*bf0390e2SRichard Acayan msleep(120); 53*bf0390e2SRichard Acayan 54*bf0390e2SRichard Acayan ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK); 55*bf0390e2SRichard Acayan if (ret < 0) { 56*bf0390e2SRichard Acayan dev_err(dev, "Failed to set tear on: %d\n", ret); 57*bf0390e2SRichard Acayan return ret; 58*bf0390e2SRichard Acayan } 59*bf0390e2SRichard Acayan 60*bf0390e2SRichard Acayan mipi_dsi_dcs_write_seq(dsi, 0xf0, 0x5a, 0x5a); 61*bf0390e2SRichard Acayan mipi_dsi_dcs_write_seq(dsi, 0xf4, 62*bf0390e2SRichard Acayan 0xbb, 0x23, 0x19, 0x3a, 0x9f, 0x0f, 0x09, 0xc0, 63*bf0390e2SRichard Acayan 0x00, 0xb4, 0x37, 0x70, 0x79, 0x69); 64*bf0390e2SRichard Acayan mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xa5, 0xa5); 65*bf0390e2SRichard Acayan mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20); 66*bf0390e2SRichard Acayan 67*bf0390e2SRichard Acayan ret = mipi_dsi_dcs_set_display_on(dsi); 68*bf0390e2SRichard Acayan if (ret < 0) { 69*bf0390e2SRichard Acayan dev_err(dev, "Failed to set display on: %d\n", ret); 70*bf0390e2SRichard Acayan return ret; 71*bf0390e2SRichard Acayan } 72*bf0390e2SRichard Acayan 73*bf0390e2SRichard Acayan return 0; 74*bf0390e2SRichard Acayan } 75*bf0390e2SRichard Acayan 76*bf0390e2SRichard Acayan static int s6e3fa7_panel_prepare(struct drm_panel *panel) 77*bf0390e2SRichard Acayan { 78*bf0390e2SRichard Acayan struct s6e3fa7_panel *ctx = to_s6e3fa7_panel(panel); 79*bf0390e2SRichard Acayan struct device *dev = &ctx->dsi->dev; 80*bf0390e2SRichard Acayan int ret; 81*bf0390e2SRichard Acayan 82*bf0390e2SRichard Acayan s6e3fa7_panel_reset(ctx); 83*bf0390e2SRichard Acayan 84*bf0390e2SRichard Acayan ret = s6e3fa7_panel_on(ctx); 85*bf0390e2SRichard Acayan if (ret < 0) { 86*bf0390e2SRichard Acayan dev_err(dev, "Failed to initialize panel: %d\n", ret); 87*bf0390e2SRichard Acayan gpiod_set_value_cansleep(ctx->reset_gpio, 1); 88*bf0390e2SRichard Acayan return ret; 89*bf0390e2SRichard Acayan } 90*bf0390e2SRichard Acayan 91*bf0390e2SRichard Acayan return 0; 92*bf0390e2SRichard Acayan } 93*bf0390e2SRichard Acayan 94*bf0390e2SRichard Acayan static int s6e3fa7_panel_unprepare(struct drm_panel *panel) 95*bf0390e2SRichard Acayan { 96*bf0390e2SRichard Acayan struct s6e3fa7_panel *ctx = to_s6e3fa7_panel(panel); 97*bf0390e2SRichard Acayan 98*bf0390e2SRichard Acayan gpiod_set_value_cansleep(ctx->reset_gpio, 1); 99*bf0390e2SRichard Acayan 100*bf0390e2SRichard Acayan return 0; 101*bf0390e2SRichard Acayan } 102*bf0390e2SRichard Acayan 103*bf0390e2SRichard Acayan static int s6e3fa7_panel_disable(struct drm_panel *panel) 104*bf0390e2SRichard Acayan { 105*bf0390e2SRichard Acayan struct s6e3fa7_panel *ctx = to_s6e3fa7_panel(panel); 106*bf0390e2SRichard Acayan struct mipi_dsi_device *dsi = ctx->dsi; 107*bf0390e2SRichard Acayan struct device *dev = &dsi->dev; 108*bf0390e2SRichard Acayan int ret; 109*bf0390e2SRichard Acayan 110*bf0390e2SRichard Acayan ret = mipi_dsi_dcs_set_display_off(dsi); 111*bf0390e2SRichard Acayan if (ret < 0) { 112*bf0390e2SRichard Acayan dev_err(dev, "Failed to set display off: %d\n", ret); 113*bf0390e2SRichard Acayan return ret; 114*bf0390e2SRichard Acayan } 115*bf0390e2SRichard Acayan 116*bf0390e2SRichard Acayan ret = mipi_dsi_dcs_enter_sleep_mode(dsi); 117*bf0390e2SRichard Acayan if (ret < 0) { 118*bf0390e2SRichard Acayan dev_err(dev, "Failed to enter sleep mode: %d\n", ret); 119*bf0390e2SRichard Acayan return ret; 120*bf0390e2SRichard Acayan } 121*bf0390e2SRichard Acayan msleep(120); 122*bf0390e2SRichard Acayan 123*bf0390e2SRichard Acayan return 0; 124*bf0390e2SRichard Acayan } 125*bf0390e2SRichard Acayan 126*bf0390e2SRichard Acayan static const struct drm_display_mode s6e3fa7_panel_mode = { 127*bf0390e2SRichard Acayan .clock = (1080 + 32 + 32 + 78) * (2220 + 32 + 4 + 78) * 60 / 1000, 128*bf0390e2SRichard Acayan .hdisplay = 1080, 129*bf0390e2SRichard Acayan .hsync_start = 1080 + 32, 130*bf0390e2SRichard Acayan .hsync_end = 1080 + 32 + 32, 131*bf0390e2SRichard Acayan .htotal = 1080 + 32 + 32 + 78, 132*bf0390e2SRichard Acayan .vdisplay = 2220, 133*bf0390e2SRichard Acayan .vsync_start = 2220 + 32, 134*bf0390e2SRichard Acayan .vsync_end = 2220 + 32 + 4, 135*bf0390e2SRichard Acayan .vtotal = 2220 + 32 + 4 + 78, 136*bf0390e2SRichard Acayan .width_mm = 62, 137*bf0390e2SRichard Acayan .height_mm = 127, 138*bf0390e2SRichard Acayan }; 139*bf0390e2SRichard Acayan 140*bf0390e2SRichard Acayan static int s6e3fa7_panel_get_modes(struct drm_panel *panel, 141*bf0390e2SRichard Acayan struct drm_connector *connector) 142*bf0390e2SRichard Acayan { 143*bf0390e2SRichard Acayan struct drm_display_mode *mode; 144*bf0390e2SRichard Acayan 145*bf0390e2SRichard Acayan mode = drm_mode_duplicate(connector->dev, &s6e3fa7_panel_mode); 146*bf0390e2SRichard Acayan if (!mode) 147*bf0390e2SRichard Acayan return -ENOMEM; 148*bf0390e2SRichard Acayan 149*bf0390e2SRichard Acayan drm_mode_set_name(mode); 150*bf0390e2SRichard Acayan 151*bf0390e2SRichard Acayan mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; 152*bf0390e2SRichard Acayan connector->display_info.width_mm = mode->width_mm; 153*bf0390e2SRichard Acayan connector->display_info.height_mm = mode->height_mm; 154*bf0390e2SRichard Acayan drm_mode_probed_add(connector, mode); 155*bf0390e2SRichard Acayan 156*bf0390e2SRichard Acayan return 1; 157*bf0390e2SRichard Acayan } 158*bf0390e2SRichard Acayan 159*bf0390e2SRichard Acayan static const struct drm_panel_funcs s6e3fa7_panel_funcs = { 160*bf0390e2SRichard Acayan .prepare = s6e3fa7_panel_prepare, 161*bf0390e2SRichard Acayan .unprepare = s6e3fa7_panel_unprepare, 162*bf0390e2SRichard Acayan .disable = s6e3fa7_panel_disable, 163*bf0390e2SRichard Acayan .get_modes = s6e3fa7_panel_get_modes, 164*bf0390e2SRichard Acayan }; 165*bf0390e2SRichard Acayan 166*bf0390e2SRichard Acayan static int s6e3fa7_panel_bl_update_status(struct backlight_device *bl) 167*bf0390e2SRichard Acayan { 168*bf0390e2SRichard Acayan struct mipi_dsi_device *dsi = bl_get_data(bl); 169*bf0390e2SRichard Acayan u16 brightness = backlight_get_brightness(bl); 170*bf0390e2SRichard Acayan int ret; 171*bf0390e2SRichard Acayan 172*bf0390e2SRichard Acayan ret = mipi_dsi_dcs_set_display_brightness_large(dsi, brightness); 173*bf0390e2SRichard Acayan if (ret < 0) 174*bf0390e2SRichard Acayan return ret; 175*bf0390e2SRichard Acayan 176*bf0390e2SRichard Acayan return 0; 177*bf0390e2SRichard Acayan } 178*bf0390e2SRichard Acayan 179*bf0390e2SRichard Acayan static int s6e3fa7_panel_bl_get_brightness(struct backlight_device *bl) 180*bf0390e2SRichard Acayan { 181*bf0390e2SRichard Acayan struct mipi_dsi_device *dsi = bl_get_data(bl); 182*bf0390e2SRichard Acayan u16 brightness; 183*bf0390e2SRichard Acayan int ret; 184*bf0390e2SRichard Acayan 185*bf0390e2SRichard Acayan ret = mipi_dsi_dcs_get_display_brightness_large(dsi, &brightness); 186*bf0390e2SRichard Acayan if (ret < 0) 187*bf0390e2SRichard Acayan return ret; 188*bf0390e2SRichard Acayan 189*bf0390e2SRichard Acayan return brightness; 190*bf0390e2SRichard Acayan } 191*bf0390e2SRichard Acayan 192*bf0390e2SRichard Acayan static const struct backlight_ops s6e3fa7_panel_bl_ops = { 193*bf0390e2SRichard Acayan .update_status = s6e3fa7_panel_bl_update_status, 194*bf0390e2SRichard Acayan .get_brightness = s6e3fa7_panel_bl_get_brightness, 195*bf0390e2SRichard Acayan }; 196*bf0390e2SRichard Acayan 197*bf0390e2SRichard Acayan static struct backlight_device * 198*bf0390e2SRichard Acayan s6e3fa7_panel_create_backlight(struct mipi_dsi_device *dsi) 199*bf0390e2SRichard Acayan { 200*bf0390e2SRichard Acayan struct device *dev = &dsi->dev; 201*bf0390e2SRichard Acayan const struct backlight_properties props = { 202*bf0390e2SRichard Acayan .type = BACKLIGHT_RAW, 203*bf0390e2SRichard Acayan .brightness = 1023, 204*bf0390e2SRichard Acayan .max_brightness = 1023, 205*bf0390e2SRichard Acayan }; 206*bf0390e2SRichard Acayan 207*bf0390e2SRichard Acayan return devm_backlight_device_register(dev, dev_name(dev), dev, dsi, 208*bf0390e2SRichard Acayan &s6e3fa7_panel_bl_ops, &props); 209*bf0390e2SRichard Acayan } 210*bf0390e2SRichard Acayan 211*bf0390e2SRichard Acayan static int s6e3fa7_panel_probe(struct mipi_dsi_device *dsi) 212*bf0390e2SRichard Acayan { 213*bf0390e2SRichard Acayan struct device *dev = &dsi->dev; 214*bf0390e2SRichard Acayan struct s6e3fa7_panel *ctx; 215*bf0390e2SRichard Acayan int ret; 216*bf0390e2SRichard Acayan 217*bf0390e2SRichard Acayan ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); 218*bf0390e2SRichard Acayan if (!ctx) 219*bf0390e2SRichard Acayan return -ENOMEM; 220*bf0390e2SRichard Acayan 221*bf0390e2SRichard Acayan ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); 222*bf0390e2SRichard Acayan if (IS_ERR(ctx->reset_gpio)) 223*bf0390e2SRichard Acayan return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio), 224*bf0390e2SRichard Acayan "Failed to get reset-gpios\n"); 225*bf0390e2SRichard Acayan 226*bf0390e2SRichard Acayan ctx->dsi = dsi; 227*bf0390e2SRichard Acayan mipi_dsi_set_drvdata(dsi, ctx); 228*bf0390e2SRichard Acayan 229*bf0390e2SRichard Acayan dsi->lanes = 4; 230*bf0390e2SRichard Acayan dsi->format = MIPI_DSI_FMT_RGB888; 231*bf0390e2SRichard Acayan dsi->mode_flags = MIPI_DSI_MODE_VIDEO_BURST | 232*bf0390e2SRichard Acayan MIPI_DSI_CLOCK_NON_CONTINUOUS | MIPI_DSI_MODE_LPM; 233*bf0390e2SRichard Acayan 234*bf0390e2SRichard Acayan drm_panel_init(&ctx->panel, dev, &s6e3fa7_panel_funcs, 235*bf0390e2SRichard Acayan DRM_MODE_CONNECTOR_DSI); 236*bf0390e2SRichard Acayan ctx->panel.prepare_prev_first = true; 237*bf0390e2SRichard Acayan 238*bf0390e2SRichard Acayan ctx->panel.backlight = s6e3fa7_panel_create_backlight(dsi); 239*bf0390e2SRichard Acayan if (IS_ERR(ctx->panel.backlight)) 240*bf0390e2SRichard Acayan return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight), 241*bf0390e2SRichard Acayan "Failed to create backlight\n"); 242*bf0390e2SRichard Acayan 243*bf0390e2SRichard Acayan drm_panel_add(&ctx->panel); 244*bf0390e2SRichard Acayan 245*bf0390e2SRichard Acayan ret = mipi_dsi_attach(dsi); 246*bf0390e2SRichard Acayan if (ret < 0) { 247*bf0390e2SRichard Acayan dev_err(dev, "Failed to attach to DSI host: %d\n", ret); 248*bf0390e2SRichard Acayan drm_panel_remove(&ctx->panel); 249*bf0390e2SRichard Acayan return ret; 250*bf0390e2SRichard Acayan } 251*bf0390e2SRichard Acayan 252*bf0390e2SRichard Acayan return 0; 253*bf0390e2SRichard Acayan } 254*bf0390e2SRichard Acayan 255*bf0390e2SRichard Acayan static void s6e3fa7_panel_remove(struct mipi_dsi_device *dsi) 256*bf0390e2SRichard Acayan { 257*bf0390e2SRichard Acayan struct s6e3fa7_panel *ctx = mipi_dsi_get_drvdata(dsi); 258*bf0390e2SRichard Acayan int ret; 259*bf0390e2SRichard Acayan 260*bf0390e2SRichard Acayan ret = mipi_dsi_detach(dsi); 261*bf0390e2SRichard Acayan if (ret < 0) 262*bf0390e2SRichard Acayan dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret); 263*bf0390e2SRichard Acayan 264*bf0390e2SRichard Acayan drm_panel_remove(&ctx->panel); 265*bf0390e2SRichard Acayan } 266*bf0390e2SRichard Acayan 267*bf0390e2SRichard Acayan static const struct of_device_id s6e3fa7_panel_of_match[] = { 268*bf0390e2SRichard Acayan { .compatible = "samsung,s6e3fa7-ams559nk06" }, 269*bf0390e2SRichard Acayan { /* sentinel */ } 270*bf0390e2SRichard Acayan }; 271*bf0390e2SRichard Acayan MODULE_DEVICE_TABLE(of, s6e3fa7_panel_of_match); 272*bf0390e2SRichard Acayan 273*bf0390e2SRichard Acayan static struct mipi_dsi_driver s6e3fa7_panel_driver = { 274*bf0390e2SRichard Acayan .probe = s6e3fa7_panel_probe, 275*bf0390e2SRichard Acayan .remove = s6e3fa7_panel_remove, 276*bf0390e2SRichard Acayan .driver = { 277*bf0390e2SRichard Acayan .name = "panel-samsung-s6e3fa7", 278*bf0390e2SRichard Acayan .of_match_table = s6e3fa7_panel_of_match, 279*bf0390e2SRichard Acayan }, 280*bf0390e2SRichard Acayan }; 281*bf0390e2SRichard Acayan module_mipi_dsi_driver(s6e3fa7_panel_driver); 282*bf0390e2SRichard Acayan 283*bf0390e2SRichard Acayan MODULE_AUTHOR("Richard Acayan <mailingradian@gmail.com>"); 284*bf0390e2SRichard Acayan MODULE_DESCRIPTION("DRM driver for Samsung S6E3FA7 command mode DSI panel"); 285*bf0390e2SRichard Acayan MODULE_LICENSE("GPL"); 286