Thomas Gleixner | caab277 | 2019-06-03 07:44:50 +0200 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-only |
Werner Johansson | ee01723 | 2015-10-30 15:34:30 -0700 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (C) 2015 Red Hat |
| 4 | * Copyright (C) 2015 Sony Mobile Communications Inc. |
| 5 | * Author: Werner Johansson <werner.johansson@sonymobile.com> |
| 6 | * |
| 7 | * Based on AUO panel driver by Rob Clark <robdclark@gmail.com> |
Werner Johansson | ee01723 | 2015-10-30 15:34:30 -0700 | [diff] [blame] | 8 | */ |
| 9 | |
| 10 | #include <linux/backlight.h> |
| 11 | #include <linux/gpio/consumer.h> |
| 12 | #include <linux/module.h> |
| 13 | #include <linux/of.h> |
| 14 | #include <linux/regulator/consumer.h> |
| 15 | |
| 16 | #include <drm/drmP.h> |
| 17 | #include <drm/drm_crtc.h> |
| 18 | #include <drm/drm_mipi_dsi.h> |
| 19 | #include <drm/drm_panel.h> |
| 20 | |
| 21 | #include <video/mipi_display.h> |
| 22 | |
| 23 | struct sharp_nt_panel { |
| 24 | struct drm_panel base; |
| 25 | struct mipi_dsi_device *dsi; |
| 26 | |
| 27 | struct backlight_device *backlight; |
| 28 | struct regulator *supply; |
| 29 | struct gpio_desc *reset_gpio; |
| 30 | |
| 31 | bool prepared; |
| 32 | bool enabled; |
| 33 | |
| 34 | const struct drm_display_mode *mode; |
| 35 | }; |
| 36 | |
| 37 | static inline struct sharp_nt_panel *to_sharp_nt_panel(struct drm_panel *panel) |
| 38 | { |
| 39 | return container_of(panel, struct sharp_nt_panel, base); |
| 40 | } |
| 41 | |
| 42 | static int sharp_nt_panel_init(struct sharp_nt_panel *sharp_nt) |
| 43 | { |
| 44 | struct mipi_dsi_device *dsi = sharp_nt->dsi; |
| 45 | int ret; |
| 46 | |
| 47 | dsi->mode_flags |= MIPI_DSI_MODE_LPM; |
| 48 | |
| 49 | ret = mipi_dsi_dcs_exit_sleep_mode(dsi); |
| 50 | if (ret < 0) |
| 51 | return ret; |
| 52 | |
| 53 | msleep(120); |
| 54 | |
| 55 | /* Novatek two-lane operation */ |
| 56 | ret = mipi_dsi_dcs_write(dsi, 0xae, (u8[]){ 0x03 }, 1); |
| 57 | if (ret < 0) |
| 58 | return ret; |
| 59 | |
| 60 | /* Set both MCU and RGB I/F to 24bpp */ |
| 61 | ret = mipi_dsi_dcs_set_pixel_format(dsi, MIPI_DCS_PIXEL_FMT_24BIT | |
| 62 | (MIPI_DCS_PIXEL_FMT_24BIT << 4)); |
| 63 | if (ret < 0) |
| 64 | return ret; |
| 65 | |
| 66 | return 0; |
| 67 | } |
| 68 | |
| 69 | static int sharp_nt_panel_on(struct sharp_nt_panel *sharp_nt) |
| 70 | { |
| 71 | struct mipi_dsi_device *dsi = sharp_nt->dsi; |
| 72 | int ret; |
| 73 | |
| 74 | dsi->mode_flags |= MIPI_DSI_MODE_LPM; |
| 75 | |
| 76 | ret = mipi_dsi_dcs_set_display_on(dsi); |
| 77 | if (ret < 0) |
| 78 | return ret; |
| 79 | |
| 80 | return 0; |
| 81 | } |
| 82 | |
| 83 | static int sharp_nt_panel_off(struct sharp_nt_panel *sharp_nt) |
| 84 | { |
| 85 | struct mipi_dsi_device *dsi = sharp_nt->dsi; |
| 86 | int ret; |
| 87 | |
| 88 | dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; |
| 89 | |
| 90 | ret = mipi_dsi_dcs_set_display_off(dsi); |
| 91 | if (ret < 0) |
| 92 | return ret; |
| 93 | |
| 94 | ret = mipi_dsi_dcs_enter_sleep_mode(dsi); |
| 95 | if (ret < 0) |
| 96 | return ret; |
| 97 | |
| 98 | return 0; |
| 99 | } |
| 100 | |
| 101 | |
| 102 | static int sharp_nt_panel_disable(struct drm_panel *panel) |
| 103 | { |
| 104 | struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel); |
| 105 | |
| 106 | if (!sharp_nt->enabled) |
| 107 | return 0; |
| 108 | |
Meghana Madhyastha | d593bfd | 2018-01-24 16:39:27 +0000 | [diff] [blame] | 109 | backlight_disable(sharp_nt->backlight); |
Werner Johansson | ee01723 | 2015-10-30 15:34:30 -0700 | [diff] [blame] | 110 | |
| 111 | sharp_nt->enabled = false; |
| 112 | |
| 113 | return 0; |
| 114 | } |
| 115 | |
| 116 | static int sharp_nt_panel_unprepare(struct drm_panel *panel) |
| 117 | { |
| 118 | struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel); |
| 119 | int ret; |
| 120 | |
| 121 | if (!sharp_nt->prepared) |
| 122 | return 0; |
| 123 | |
| 124 | ret = sharp_nt_panel_off(sharp_nt); |
| 125 | if (ret < 0) { |
| 126 | dev_err(panel->dev, "failed to set panel off: %d\n", ret); |
| 127 | return ret; |
| 128 | } |
| 129 | |
| 130 | regulator_disable(sharp_nt->supply); |
| 131 | if (sharp_nt->reset_gpio) |
| 132 | gpiod_set_value(sharp_nt->reset_gpio, 0); |
| 133 | |
| 134 | sharp_nt->prepared = false; |
| 135 | |
| 136 | return 0; |
| 137 | } |
| 138 | |
| 139 | static int sharp_nt_panel_prepare(struct drm_panel *panel) |
| 140 | { |
| 141 | struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel); |
| 142 | int ret; |
| 143 | |
| 144 | if (sharp_nt->prepared) |
| 145 | return 0; |
| 146 | |
| 147 | ret = regulator_enable(sharp_nt->supply); |
| 148 | if (ret < 0) |
| 149 | return ret; |
| 150 | |
| 151 | msleep(20); |
| 152 | |
| 153 | if (sharp_nt->reset_gpio) { |
| 154 | gpiod_set_value(sharp_nt->reset_gpio, 1); |
| 155 | msleep(1); |
| 156 | gpiod_set_value(sharp_nt->reset_gpio, 0); |
| 157 | msleep(1); |
| 158 | gpiod_set_value(sharp_nt->reset_gpio, 1); |
| 159 | msleep(10); |
| 160 | } |
| 161 | |
| 162 | ret = sharp_nt_panel_init(sharp_nt); |
| 163 | if (ret < 0) { |
| 164 | dev_err(panel->dev, "failed to init panel: %d\n", ret); |
| 165 | goto poweroff; |
| 166 | } |
| 167 | |
| 168 | ret = sharp_nt_panel_on(sharp_nt); |
| 169 | if (ret < 0) { |
| 170 | dev_err(panel->dev, "failed to set panel on: %d\n", ret); |
| 171 | goto poweroff; |
| 172 | } |
| 173 | |
| 174 | sharp_nt->prepared = true; |
| 175 | |
| 176 | return 0; |
| 177 | |
| 178 | poweroff: |
| 179 | regulator_disable(sharp_nt->supply); |
| 180 | if (sharp_nt->reset_gpio) |
| 181 | gpiod_set_value(sharp_nt->reset_gpio, 0); |
| 182 | return ret; |
| 183 | } |
| 184 | |
| 185 | static int sharp_nt_panel_enable(struct drm_panel *panel) |
| 186 | { |
| 187 | struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel); |
| 188 | |
| 189 | if (sharp_nt->enabled) |
| 190 | return 0; |
| 191 | |
Meghana Madhyastha | d593bfd | 2018-01-24 16:39:27 +0000 | [diff] [blame] | 192 | backlight_enable(sharp_nt->backlight); |
Werner Johansson | ee01723 | 2015-10-30 15:34:30 -0700 | [diff] [blame] | 193 | |
| 194 | sharp_nt->enabled = true; |
| 195 | |
| 196 | return 0; |
| 197 | } |
| 198 | |
| 199 | static const struct drm_display_mode default_mode = { |
| 200 | .clock = 41118, |
| 201 | .hdisplay = 540, |
| 202 | .hsync_start = 540 + 48, |
| 203 | .hsync_end = 540 + 48 + 80, |
| 204 | .htotal = 540 + 48 + 80 + 32, |
| 205 | .vdisplay = 960, |
| 206 | .vsync_start = 960 + 3, |
| 207 | .vsync_end = 960 + 3 + 15, |
| 208 | .vtotal = 960 + 3 + 15 + 1, |
| 209 | .vrefresh = 60, |
| 210 | }; |
| 211 | |
| 212 | static int sharp_nt_panel_get_modes(struct drm_panel *panel) |
| 213 | { |
| 214 | struct drm_display_mode *mode; |
| 215 | |
| 216 | mode = drm_mode_duplicate(panel->drm, &default_mode); |
| 217 | if (!mode) { |
| 218 | dev_err(panel->drm->dev, "failed to add mode %ux%ux@%u\n", |
| 219 | default_mode.hdisplay, default_mode.vdisplay, |
| 220 | default_mode.vrefresh); |
| 221 | return -ENOMEM; |
| 222 | } |
| 223 | |
| 224 | drm_mode_set_name(mode); |
| 225 | |
| 226 | drm_mode_probed_add(panel->connector, mode); |
| 227 | |
| 228 | panel->connector->display_info.width_mm = 54; |
| 229 | panel->connector->display_info.height_mm = 95; |
| 230 | |
| 231 | return 1; |
| 232 | } |
| 233 | |
| 234 | static const struct drm_panel_funcs sharp_nt_panel_funcs = { |
| 235 | .disable = sharp_nt_panel_disable, |
| 236 | .unprepare = sharp_nt_panel_unprepare, |
| 237 | .prepare = sharp_nt_panel_prepare, |
| 238 | .enable = sharp_nt_panel_enable, |
| 239 | .get_modes = sharp_nt_panel_get_modes, |
| 240 | }; |
| 241 | |
| 242 | static int sharp_nt_panel_add(struct sharp_nt_panel *sharp_nt) |
| 243 | { |
| 244 | struct device *dev = &sharp_nt->dsi->dev; |
Werner Johansson | ee01723 | 2015-10-30 15:34:30 -0700 | [diff] [blame] | 245 | |
| 246 | sharp_nt->mode = &default_mode; |
| 247 | |
| 248 | sharp_nt->supply = devm_regulator_get(dev, "avdd"); |
| 249 | if (IS_ERR(sharp_nt->supply)) |
| 250 | return PTR_ERR(sharp_nt->supply); |
| 251 | |
| 252 | sharp_nt->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); |
| 253 | if (IS_ERR(sharp_nt->reset_gpio)) { |
| 254 | dev_err(dev, "cannot get reset-gpios %ld\n", |
| 255 | PTR_ERR(sharp_nt->reset_gpio)); |
| 256 | sharp_nt->reset_gpio = NULL; |
| 257 | } else { |
| 258 | gpiod_set_value(sharp_nt->reset_gpio, 0); |
| 259 | } |
| 260 | |
Meghana Madhyastha | c69f945 | 2018-01-24 16:40:51 +0000 | [diff] [blame] | 261 | sharp_nt->backlight = devm_of_find_backlight(dev); |
Werner Johansson | ee01723 | 2015-10-30 15:34:30 -0700 | [diff] [blame] | 262 | |
Meghana Madhyastha | c69f945 | 2018-01-24 16:40:51 +0000 | [diff] [blame] | 263 | if (IS_ERR(sharp_nt->backlight)) |
| 264 | return PTR_ERR(sharp_nt->backlight); |
Werner Johansson | ee01723 | 2015-10-30 15:34:30 -0700 | [diff] [blame] | 265 | |
| 266 | drm_panel_init(&sharp_nt->base); |
| 267 | sharp_nt->base.funcs = &sharp_nt_panel_funcs; |
| 268 | sharp_nt->base.dev = &sharp_nt->dsi->dev; |
| 269 | |
Meghana Madhyastha | c69f945 | 2018-01-24 16:40:51 +0000 | [diff] [blame] | 270 | return drm_panel_add(&sharp_nt->base); |
Werner Johansson | ee01723 | 2015-10-30 15:34:30 -0700 | [diff] [blame] | 271 | } |
| 272 | |
| 273 | static void sharp_nt_panel_del(struct sharp_nt_panel *sharp_nt) |
| 274 | { |
| 275 | if (sharp_nt->base.dev) |
| 276 | drm_panel_remove(&sharp_nt->base); |
Werner Johansson | ee01723 | 2015-10-30 15:34:30 -0700 | [diff] [blame] | 277 | } |
| 278 | |
| 279 | static int sharp_nt_panel_probe(struct mipi_dsi_device *dsi) |
| 280 | { |
| 281 | struct sharp_nt_panel *sharp_nt; |
| 282 | int ret; |
| 283 | |
| 284 | dsi->lanes = 2; |
| 285 | dsi->format = MIPI_DSI_FMT_RGB888; |
| 286 | dsi->mode_flags = MIPI_DSI_MODE_VIDEO | |
| 287 | MIPI_DSI_MODE_VIDEO_HSE | |
| 288 | MIPI_DSI_CLOCK_NON_CONTINUOUS | |
| 289 | MIPI_DSI_MODE_EOT_PACKET; |
| 290 | |
| 291 | sharp_nt = devm_kzalloc(&dsi->dev, sizeof(*sharp_nt), GFP_KERNEL); |
| 292 | if (!sharp_nt) |
| 293 | return -ENOMEM; |
| 294 | |
| 295 | mipi_dsi_set_drvdata(dsi, sharp_nt); |
| 296 | |
| 297 | sharp_nt->dsi = dsi; |
| 298 | |
| 299 | ret = sharp_nt_panel_add(sharp_nt); |
| 300 | if (ret < 0) |
| 301 | return ret; |
| 302 | |
| 303 | return mipi_dsi_attach(dsi); |
| 304 | } |
| 305 | |
| 306 | static int sharp_nt_panel_remove(struct mipi_dsi_device *dsi) |
| 307 | { |
| 308 | struct sharp_nt_panel *sharp_nt = mipi_dsi_get_drvdata(dsi); |
| 309 | int ret; |
| 310 | |
| 311 | ret = sharp_nt_panel_disable(&sharp_nt->base); |
| 312 | if (ret < 0) |
| 313 | dev_err(&dsi->dev, "failed to disable panel: %d\n", ret); |
| 314 | |
| 315 | ret = mipi_dsi_detach(dsi); |
| 316 | if (ret < 0) |
| 317 | dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret); |
| 318 | |
Werner Johansson | ee01723 | 2015-10-30 15:34:30 -0700 | [diff] [blame] | 319 | sharp_nt_panel_del(sharp_nt); |
| 320 | |
| 321 | return 0; |
| 322 | } |
| 323 | |
| 324 | static void sharp_nt_panel_shutdown(struct mipi_dsi_device *dsi) |
| 325 | { |
| 326 | struct sharp_nt_panel *sharp_nt = mipi_dsi_get_drvdata(dsi); |
| 327 | |
| 328 | sharp_nt_panel_disable(&sharp_nt->base); |
| 329 | } |
| 330 | |
| 331 | static const struct of_device_id sharp_nt_of_match[] = { |
| 332 | { .compatible = "sharp,ls043t1le01-qhd", }, |
| 333 | { } |
| 334 | }; |
| 335 | MODULE_DEVICE_TABLE(of, sharp_nt_of_match); |
| 336 | |
| 337 | static struct mipi_dsi_driver sharp_nt_panel_driver = { |
| 338 | .driver = { |
| 339 | .name = "panel-sharp-ls043t1le01-qhd", |
| 340 | .of_match_table = sharp_nt_of_match, |
| 341 | }, |
| 342 | .probe = sharp_nt_panel_probe, |
| 343 | .remove = sharp_nt_panel_remove, |
| 344 | .shutdown = sharp_nt_panel_shutdown, |
| 345 | }; |
| 346 | module_mipi_dsi_driver(sharp_nt_panel_driver); |
| 347 | |
| 348 | MODULE_AUTHOR("Werner Johansson <werner.johansson@sonymobile.com>"); |
| 349 | MODULE_DESCRIPTION("Sharp LS043T1LE01 NT35565-based qHD (540x960) video mode panel driver"); |
| 350 | MODULE_LICENSE("GPL v2"); |