Ray Zhang | ebb763a | 2018-01-22 10:46:40 +0800 | [diff] [blame] | 1 | /* Copyright (c) 2018, The Linux Foundation. All rights reserved. |
| 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 and |
| 5 | * only version 2 as published by the Free Software Foundation. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | * |
| 12 | */ |
| 13 | |
| 14 | #define pr_fmt(fmt) "%s: " fmt, __func__ |
| 15 | |
| 16 | #include <linux/types.h> |
| 17 | #include <linux/kernel.h> |
| 18 | #include <linux/module.h> |
| 19 | #include <linux/init.h> |
| 20 | #include <linux/device.h> |
| 21 | #include <linux/platform_device.h> |
| 22 | #include <linux/fs.h> |
| 23 | #include <linux/delay.h> |
| 24 | #include <linux/i2c.h> |
| 25 | #include <linux/gpio.h> |
| 26 | #include <linux/interrupt.h> |
| 27 | #include <linux/of_gpio.h> |
| 28 | #include <linux/of_graph.h> |
| 29 | #include <linux/of_irq.h> |
| 30 | #include <linux/regulator/consumer.h> |
| 31 | #include <linux/hdmi.h> |
| 32 | #include <drm/drmP.h> |
| 33 | #include <drm/drm_atomic.h> |
| 34 | #include <drm/drm_atomic_helper.h> |
| 35 | #include <drm/drm_edid.h> |
| 36 | #include <drm/drm_mipi_dsi.h> |
| 37 | |
| 38 | |
| 39 | #define CFG_HPD_INTERRUPTS BIT(0) |
| 40 | #define CFG_EDID_INTERRUPTS BIT(1) |
| 41 | #define CFG_CEC_INTERRUPTS BIT(2) |
| 42 | #define CFG_VID_CHK_INTERRUPTS BIT(3) |
| 43 | |
| 44 | #define EDID_SEG_SIZE 256 |
| 45 | |
| 46 | struct lt9611_reg_cfg { |
| 47 | u8 reg; |
| 48 | u8 val; |
| 49 | int sleep_in_ms; |
| 50 | }; |
| 51 | |
| 52 | struct lt9611_vreg { |
| 53 | struct regulator *vreg; /* vreg handle */ |
| 54 | char vreg_name[32]; |
| 55 | int min_voltage; |
| 56 | int max_voltage; |
| 57 | int enable_load; |
| 58 | int disable_load; |
| 59 | int pre_on_sleep; |
| 60 | int post_on_sleep; |
| 61 | int pre_off_sleep; |
| 62 | int post_off_sleep; |
| 63 | }; |
| 64 | |
| 65 | struct lt9611_video_cfg { |
| 66 | u32 h_active; |
| 67 | u32 h_front_porch; |
| 68 | u32 h_pulse_width; |
| 69 | u32 h_back_porch; |
| 70 | bool h_polarity; |
| 71 | u32 v_active; |
| 72 | u32 v_front_porch; |
| 73 | u32 v_pulse_width; |
| 74 | u32 v_back_porch; |
| 75 | bool v_polarity; |
| 76 | u32 pclk_khz; |
| 77 | bool interlaced; |
| 78 | u32 vic; |
| 79 | enum hdmi_picture_aspect ar; |
| 80 | u32 num_of_lanes; |
| 81 | u32 num_of_intfs; |
| 82 | u8 scaninfo; |
| 83 | }; |
| 84 | |
| 85 | struct lt9611 { |
| 86 | struct device *dev; |
| 87 | struct drm_bridge bridge; |
| 88 | |
| 89 | struct device_node *host_node; |
| 90 | struct mipi_dsi_device *dsi; |
| 91 | |
| 92 | u8 i2c_addr; |
| 93 | int irq; |
| 94 | bool ac_mode; |
| 95 | |
| 96 | u32 irq_gpio; |
| 97 | u32 reset_gpio; |
| 98 | u32 hdmi_ps_gpio; |
| 99 | u32 hdmi_en_gpio; |
| 100 | |
| 101 | unsigned int num_vreg; |
| 102 | struct lt9611_vreg *vreg_config; |
| 103 | |
| 104 | struct i2c_client *i2c_client; |
| 105 | |
| 106 | enum drm_connector_status status; |
| 107 | bool power_on; |
| 108 | |
| 109 | /* get display modes from device tree */ |
| 110 | bool non_pluggable; |
| 111 | u32 num_of_modes; |
| 112 | struct list_head mode_list; |
| 113 | |
| 114 | struct drm_display_mode curr_mode; |
| 115 | struct lt9611_video_cfg video_cfg; |
| 116 | |
| 117 | u8 edid_buf[EDID_SEG_SIZE]; |
| 118 | bool hdmi_mode; |
| 119 | }; |
| 120 | |
| 121 | static struct lt9611_reg_cfg lt9611_init_setup[] = { |
| 122 | /* LT9611_System_Init */ |
| 123 | {0xFF, 0x81, 0}, |
| 124 | {0x01, 0x18, 0}, /* sel xtal clock */ |
| 125 | |
| 126 | /* timer for frequency meter */ |
| 127 | {0xff, 0x82, 0}, |
| 128 | {0x1b, 0x69, 0}, /*timer 2*/ |
| 129 | {0x1c, 0x78, 0}, |
| 130 | {0xcb, 0x69, 0}, /*timer 1 */ |
| 131 | {0xcc, 0x78, 0}, |
| 132 | |
| 133 | /* irq init */ |
| 134 | {0xff, 0x82, 0}, |
| 135 | {0x51, 0x01, 0}, |
| 136 | {0x58, 0x0a, 0}, /* hpd irq */ |
| 137 | {0x59, 0x80, 0}, /* hpd debounce width */ |
| 138 | {0x9e, 0xf7, 0}, /* video check irq */ |
| 139 | |
| 140 | /* power consumption for work */ |
| 141 | {0xff, 0x80, 0}, |
| 142 | {0x04, 0xf0, 0}, |
| 143 | {0x06, 0xf0, 0}, |
| 144 | {0x0a, 0x80, 0}, |
| 145 | {0x0b, 0x40, 0}, |
| 146 | {0x0d, 0xef, 0}, |
| 147 | {0x11, 0xfa, 0}, |
| 148 | }; |
| 149 | |
| 150 | struct lt9611_timing_info { |
| 151 | u16 xres; |
| 152 | u16 yres; |
| 153 | u8 bpp; |
| 154 | u8 fps; |
| 155 | u8 lanes; |
| 156 | u8 intfs; |
| 157 | }; |
| 158 | |
| 159 | static struct lt9611_timing_info lt9611_supp_timing_cfg[] = { |
| 160 | {3840, 2160, 24, 30, 4, 2}, /* 3840x2160 24bit 30Hz 4Lane 2ports */ |
| 161 | {1920, 1080, 24, 60, 4, 1}, /* 1080P 24bit 60Hz 4lane 1port */ |
| 162 | {1920, 1080, 24, 30, 3, 1}, /* 1080P 24bit 30Hz 3lane 1port */ |
| 163 | {1920, 1080, 24, 24, 3, 1}, |
| 164 | {720, 480, 24, 60, 2, 1}, |
| 165 | {720, 576, 24, 50, 2, 1}, |
| 166 | {640, 480, 24, 60, 2, 1}, |
| 167 | {0xffff, 0xffff, 0xff, 0xff, 0xff}, |
| 168 | }; |
| 169 | |
| 170 | static struct lt9611 *bridge_to_lt9611(struct drm_bridge *bridge) |
| 171 | { |
| 172 | return container_of(bridge, struct lt9611, bridge); |
| 173 | } |
| 174 | |
| 175 | static struct lt9611 *connector_to_lt9611(struct drm_connector *connector) |
| 176 | { |
| 177 | WARN_ON(!connector->private); |
| 178 | |
| 179 | return bridge_to_lt9611(connector->private); |
| 180 | } |
| 181 | |
| 182 | static int lt9611_write(struct lt9611 *pdata, u8 reg, u8 val) |
| 183 | { |
| 184 | struct i2c_client *client = pdata->i2c_client; |
| 185 | u8 buf[2] = {reg, val}; |
| 186 | struct i2c_msg msg = { |
| 187 | .addr = client->addr, |
| 188 | .flags = 0, |
| 189 | .len = 2, |
| 190 | .buf = buf, |
| 191 | }; |
| 192 | |
| 193 | if (i2c_transfer(client->adapter, &msg, 1) < 1) { |
| 194 | pr_err("i2c write failed\n"); |
| 195 | return -EIO; |
| 196 | } |
| 197 | |
| 198 | return 0; |
| 199 | } |
| 200 | |
| 201 | static int lt9611_read(struct lt9611 *pdata, u8 reg, char *buf, u32 size) |
| 202 | { |
| 203 | struct i2c_client *client = pdata->i2c_client; |
| 204 | struct i2c_msg msg[2] = { |
| 205 | { |
| 206 | .addr = client->addr, |
| 207 | .flags = 0, |
| 208 | .len = 1, |
| 209 | .buf = ®, |
| 210 | }, |
| 211 | { |
| 212 | .addr = client->addr, |
| 213 | .flags = I2C_M_RD, |
| 214 | .len = size, |
| 215 | .buf = buf, |
| 216 | } |
| 217 | }; |
| 218 | |
| 219 | if (i2c_transfer(client->adapter, msg, 2) != 2) { |
| 220 | pr_err("i2c read failed\n"); |
| 221 | return -EIO; |
| 222 | } |
| 223 | |
| 224 | return 0; |
| 225 | } |
| 226 | |
| 227 | static int lt9611_write_array(struct lt9611 *pdata, |
| 228 | struct lt9611_reg_cfg *cfg, int size) |
| 229 | { |
| 230 | int ret = 0; |
| 231 | int i; |
| 232 | |
| 233 | size = size / sizeof(struct lt9611_reg_cfg); |
| 234 | for (i = 0; i < size; i++) { |
| 235 | ret = lt9611_write(pdata, cfg[i].reg, cfg[i].val); |
| 236 | |
| 237 | if (ret != 0) { |
| 238 | pr_err("reg writes failed. Last write %02X to %02X\n", |
| 239 | cfg[i].val, cfg[i].reg); |
| 240 | goto w_regs_fail; |
| 241 | } |
| 242 | |
| 243 | if (cfg[i].sleep_in_ms) |
| 244 | msleep(cfg[i].sleep_in_ms); |
| 245 | } |
| 246 | |
| 247 | w_regs_fail: |
| 248 | if (ret != 0) |
| 249 | pr_err("exiting with ret = %d after %d writes\n", ret, i); |
| 250 | |
| 251 | return ret; |
| 252 | } |
| 253 | |
| 254 | static int lt9611_parse_dt_modes(struct device_node *np, |
| 255 | struct list_head *head, |
| 256 | u32 *num_of_modes) |
| 257 | { |
| 258 | int rc = 0; |
| 259 | struct drm_display_mode *mode; |
| 260 | u32 mode_count = 0; |
| 261 | struct device_node *node = NULL; |
| 262 | struct device_node *root_node = NULL; |
| 263 | u32 h_front_porch, h_pulse_width, h_back_porch; |
| 264 | u32 v_front_porch, v_pulse_width, v_back_porch; |
| 265 | bool h_active_high, v_active_high; |
| 266 | u32 flags = 0; |
| 267 | |
| 268 | root_node = of_get_child_by_name(np, "lt,customize-modes"); |
| 269 | if (!root_node) { |
| 270 | root_node = of_parse_phandle(np, "lt,customize-modes", 0); |
| 271 | if (!root_node) { |
| 272 | pr_info("No entry present for lt,customize-modes"); |
| 273 | goto end; |
| 274 | } |
| 275 | } |
| 276 | |
| 277 | for_each_child_of_node(root_node, node) { |
| 278 | rc = 0; |
| 279 | mode = kzalloc(sizeof(*mode), GFP_KERNEL); |
| 280 | if (!mode) { |
| 281 | pr_err("Out of memory\n"); |
| 282 | rc = -ENOMEM; |
| 283 | continue; |
| 284 | } |
| 285 | |
| 286 | rc = of_property_read_u32(node, "lt,mode-h-active", |
| 287 | &mode->hdisplay); |
| 288 | if (rc) { |
| 289 | pr_err("failed to read h-active, rc=%d\n", rc); |
| 290 | goto fail; |
| 291 | } |
| 292 | |
| 293 | rc = of_property_read_u32(node, "lt,mode-h-front-porch", |
| 294 | &h_front_porch); |
| 295 | if (rc) { |
| 296 | pr_err("failed to read h-front-porch, rc=%d\n", rc); |
| 297 | goto fail; |
| 298 | } |
| 299 | |
| 300 | rc = of_property_read_u32(node, "lt,mode-h-pulse-width", |
| 301 | &h_pulse_width); |
| 302 | if (rc) { |
| 303 | pr_err("failed to read h-pulse-width, rc=%d\n", rc); |
| 304 | goto fail; |
| 305 | } |
| 306 | |
| 307 | rc = of_property_read_u32(node, "lt,mode-h-back-porch", |
| 308 | &h_back_porch); |
| 309 | if (rc) { |
| 310 | pr_err("failed to read h-back-porch, rc=%d\n", rc); |
| 311 | goto fail; |
| 312 | } |
| 313 | |
| 314 | h_active_high = of_property_read_bool(node, |
| 315 | "lt,mode-h-active-high"); |
| 316 | |
| 317 | rc = of_property_read_u32(node, "lt,mode-v-active", |
| 318 | &mode->vdisplay); |
| 319 | if (rc) { |
| 320 | pr_err("failed to read v-active, rc=%d\n", rc); |
| 321 | goto fail; |
| 322 | } |
| 323 | |
| 324 | rc = of_property_read_u32(node, "lt,mode-v-front-porch", |
| 325 | &v_front_porch); |
| 326 | if (rc) { |
| 327 | pr_err("failed to read v-front-porch, rc=%d\n", rc); |
| 328 | goto fail; |
| 329 | } |
| 330 | |
| 331 | rc = of_property_read_u32(node, "lt,mode-v-pulse-width", |
| 332 | &v_pulse_width); |
| 333 | if (rc) { |
| 334 | pr_err("failed to read v-pulse-width, rc=%d\n", rc); |
| 335 | goto fail; |
| 336 | } |
| 337 | |
| 338 | rc = of_property_read_u32(node, "lt,mode-v-back-porch", |
| 339 | &v_back_porch); |
| 340 | if (rc) { |
| 341 | pr_err("failed to read v-back-porch, rc=%d\n", rc); |
| 342 | goto fail; |
| 343 | } |
| 344 | |
| 345 | v_active_high = of_property_read_bool(node, |
| 346 | "lt,mode-v-active-high"); |
| 347 | |
| 348 | rc = of_property_read_u32(node, "lt,mode-refresh-rate", |
| 349 | &mode->vrefresh); |
| 350 | if (rc) { |
| 351 | pr_err("failed to read refresh-rate, rc=%d\n", rc); |
| 352 | goto fail; |
| 353 | } |
| 354 | |
| 355 | rc = of_property_read_u32(node, "lt,mode-clock-in-khz", |
| 356 | &mode->clock); |
| 357 | if (rc) { |
| 358 | pr_err("failed to read clock, rc=%d\n", rc); |
| 359 | goto fail; |
| 360 | } |
| 361 | |
| 362 | mode->hsync_start = mode->hdisplay + h_front_porch; |
| 363 | mode->hsync_end = mode->hsync_start + h_pulse_width; |
| 364 | mode->htotal = mode->hsync_end + h_back_porch; |
| 365 | mode->vsync_start = mode->vdisplay + v_front_porch; |
| 366 | mode->vsync_end = mode->vsync_start + v_pulse_width; |
| 367 | mode->vtotal = mode->vsync_end + v_back_porch; |
| 368 | if (h_active_high) |
| 369 | flags |= DRM_MODE_FLAG_PHSYNC; |
| 370 | else |
| 371 | flags |= DRM_MODE_FLAG_NHSYNC; |
| 372 | if (v_active_high) |
| 373 | flags |= DRM_MODE_FLAG_PVSYNC; |
| 374 | else |
| 375 | flags |= DRM_MODE_FLAG_NVSYNC; |
| 376 | mode->flags = flags; |
| 377 | |
| 378 | if (!rc) { |
| 379 | mode_count++; |
| 380 | list_add_tail(&mode->head, head); |
| 381 | } |
| 382 | |
| 383 | drm_mode_set_name(mode); |
| 384 | |
| 385 | pr_debug("mode[%s] h[%d,%d,%d,%d] v[%d,%d,%d,%d] %d %x %dkHZ\n", |
| 386 | mode->name, mode->hdisplay, mode->hsync_start, |
| 387 | mode->hsync_end, mode->htotal, mode->vdisplay, |
| 388 | mode->vsync_start, mode->vsync_end, mode->vtotal, |
| 389 | mode->vrefresh, mode->flags, mode->clock); |
| 390 | fail: |
| 391 | if (rc) { |
| 392 | kfree(mode); |
| 393 | continue; |
| 394 | } |
| 395 | } |
| 396 | |
| 397 | if (num_of_modes) |
| 398 | *num_of_modes = mode_count; |
| 399 | |
| 400 | end: |
| 401 | return rc; |
| 402 | } |
| 403 | |
| 404 | |
| 405 | static int lt9611_parse_dt(struct device *dev, |
| 406 | struct lt9611 *pdata) |
| 407 | { |
| 408 | struct device_node *np = dev->of_node; |
| 409 | struct device_node *end_node; |
| 410 | int ret = 0; |
| 411 | |
| 412 | end_node = of_graph_get_endpoint_by_regs(dev->of_node, 0, 0); |
| 413 | if (!end_node) { |
| 414 | pr_err("remote endpoint not found\n"); |
| 415 | return -ENODEV; |
| 416 | } |
| 417 | |
| 418 | pdata->host_node = of_graph_get_remote_port_parent(end_node); |
| 419 | of_node_put(end_node); |
| 420 | if (!pdata->host_node) { |
| 421 | pr_err("remote node not found\n"); |
| 422 | return -ENODEV; |
| 423 | } |
| 424 | of_node_put(pdata->host_node); |
| 425 | |
| 426 | pdata->irq_gpio = |
| 427 | of_get_named_gpio(np, "lt,irq-gpio", 0); |
| 428 | if (!gpio_is_valid(pdata->irq_gpio)) { |
| 429 | pr_err("irq gpio not specified\n"); |
| 430 | ret = -EINVAL; |
| 431 | } |
| 432 | pr_debug("irq_gpio=%d\n", pdata->irq_gpio); |
| 433 | |
| 434 | pdata->reset_gpio = |
| 435 | of_get_named_gpio(np, "lt,reset-gpio", 0); |
| 436 | if (!gpio_is_valid(pdata->reset_gpio)) { |
| 437 | pr_err("reset gpio not specified\n"); |
| 438 | ret = -EINVAL; |
| 439 | } |
| 440 | pr_debug("reset_gpio=%d\n", pdata->reset_gpio); |
| 441 | |
| 442 | pdata->hdmi_ps_gpio = |
| 443 | of_get_named_gpio(np, "lt,hdmi-ps-gpio", 0); |
| 444 | if (!gpio_is_valid(pdata->hdmi_ps_gpio)) |
| 445 | pr_debug("hdmi ps gpio not specified\n"); |
| 446 | else |
| 447 | pr_debug("hdmi_ps_gpio=%d\n", pdata->hdmi_ps_gpio); |
| 448 | |
| 449 | pdata->hdmi_en_gpio = |
| 450 | of_get_named_gpio(np, "lt,hdmi-en-gpio", 0); |
| 451 | if (!gpio_is_valid(pdata->hdmi_en_gpio)) |
| 452 | pr_debug("hdmi en gpio not specified\n"); |
| 453 | else |
| 454 | pr_debug("hdmi_en_gpio=%d\n", pdata->hdmi_en_gpio); |
| 455 | |
| 456 | pdata->ac_mode = of_property_read_bool(np, "lt,ac-mode"); |
| 457 | pr_debug("ac_mode=%d\n", pdata->ac_mode); |
| 458 | |
| 459 | pdata->non_pluggable = of_property_read_bool(np, "lt,non-pluggable"); |
| 460 | pr_debug("non_pluggable = %d\n", pdata->non_pluggable); |
| 461 | if (pdata->non_pluggable) { |
| 462 | INIT_LIST_HEAD(&pdata->mode_list); |
| 463 | ret = lt9611_parse_dt_modes(np, |
| 464 | &pdata->mode_list, &pdata->num_of_modes); |
| 465 | } |
| 466 | |
| 467 | return ret; |
| 468 | } |
| 469 | |
| 470 | static int lt9611_gpio_configure(struct lt9611 *pdata, bool on) |
| 471 | { |
| 472 | int ret = 0; |
| 473 | |
| 474 | if (on) { |
| 475 | ret = gpio_request(pdata->reset_gpio, |
| 476 | "lt9611-reset-gpio"); |
| 477 | if (ret) { |
| 478 | pr_err("lt9611 reset gpio request failed\n"); |
| 479 | goto error; |
| 480 | } |
| 481 | |
| 482 | ret = gpio_direction_output(pdata->reset_gpio, 0); |
| 483 | if (ret) { |
| 484 | pr_err("lt9611 reset gpio direction failed\n"); |
| 485 | goto reset_error; |
| 486 | } |
| 487 | |
| 488 | if (gpio_is_valid(pdata->hdmi_en_gpio)) { |
| 489 | ret = gpio_request(pdata->hdmi_en_gpio, |
| 490 | "lt9611-hdmi-en-gpio"); |
| 491 | if (ret) { |
| 492 | pr_err("lt9611 hdmi en gpio request failed\n"); |
| 493 | goto reset_error; |
| 494 | } |
| 495 | |
| 496 | ret = gpio_direction_output(pdata->hdmi_en_gpio, 1); |
| 497 | if (ret) { |
| 498 | pr_err("lt9611 hdmi en gpio direction failed\n"); |
| 499 | goto hdmi_en_error; |
| 500 | } |
| 501 | } |
| 502 | |
| 503 | if (gpio_is_valid(pdata->hdmi_ps_gpio)) { |
| 504 | ret = gpio_request(pdata->hdmi_ps_gpio, |
| 505 | "lt9611-hdmi-ps-gpio"); |
| 506 | if (ret) { |
| 507 | pr_err("lt9611 hdmi ps gpio request failed\n"); |
| 508 | goto hdmi_en_error; |
| 509 | } |
| 510 | |
| 511 | ret = gpio_direction_input(pdata->hdmi_ps_gpio); |
| 512 | if (ret) { |
| 513 | pr_err("lt9611 hdmi ps gpio direction failed\n"); |
| 514 | goto hdmi_ps_error; |
| 515 | } |
| 516 | } |
| 517 | |
| 518 | ret = gpio_request(pdata->irq_gpio, "lt9611-irq-gpio"); |
| 519 | if (ret) { |
| 520 | pr_err("lt9611 irq gpio request failed\n"); |
| 521 | goto hdmi_ps_error; |
| 522 | } |
| 523 | |
| 524 | ret = gpio_direction_input(pdata->irq_gpio); |
| 525 | if (ret) { |
| 526 | pr_err("lt9611 irq gpio direction failed\n"); |
| 527 | goto irq_error; |
| 528 | } |
| 529 | } else { |
| 530 | gpio_free(pdata->irq_gpio); |
| 531 | if (gpio_is_valid(pdata->hdmi_ps_gpio)) |
| 532 | gpio_free(pdata->hdmi_ps_gpio); |
| 533 | if (gpio_is_valid(pdata->hdmi_en_gpio)) |
| 534 | gpio_free(pdata->hdmi_en_gpio); |
| 535 | gpio_free(pdata->reset_gpio); |
| 536 | } |
| 537 | |
| 538 | return ret; |
| 539 | |
| 540 | |
| 541 | irq_error: |
| 542 | gpio_free(pdata->irq_gpio); |
| 543 | hdmi_ps_error: |
| 544 | if (gpio_is_valid(pdata->hdmi_ps_gpio)) |
| 545 | gpio_free(pdata->hdmi_ps_gpio); |
| 546 | hdmi_en_error: |
| 547 | if (gpio_is_valid(pdata->hdmi_en_gpio)) |
| 548 | gpio_free(pdata->hdmi_en_gpio); |
| 549 | reset_error: |
| 550 | gpio_free(pdata->reset_gpio); |
| 551 | error: |
| 552 | return ret; |
| 553 | } |
| 554 | |
| 555 | static int lt9611_read_device_rev(struct lt9611 *pdata) |
| 556 | { |
| 557 | u8 rev = 0; |
| 558 | int ret = 0; |
| 559 | |
| 560 | lt9611_write(pdata, 0xff, 0x80); |
| 561 | lt9611_write(pdata, 0xee, 0x01); |
| 562 | |
| 563 | ret = lt9611_read(pdata, 0x02, &rev, 1); |
| 564 | |
| 565 | if (ret == 0) |
| 566 | pr_info("LT9611 revsion: 0x%x\n", rev); |
| 567 | |
| 568 | return ret; |
| 569 | } |
| 570 | |
| 571 | static int lt9611_mipi_input_analog(struct lt9611 *pdata, |
| 572 | struct lt9611_video_cfg *cfg) |
| 573 | { |
| 574 | struct lt9611_reg_cfg reg_cfg[] = { |
| 575 | {0xff, 0x81, 0}, |
| 576 | {0x06, 0x40, 0}, /*port A rx current*/ |
| 577 | {0x0a, 0xfe, 0}, /*port A ldo voltage set*/ |
| 578 | {0x0b, 0xbf, 0}, /*enable port A lprx*/ |
| 579 | {0x11, 0x40, 0}, /*port B rx current*/ |
| 580 | {0x15, 0xfe, 0}, /*port B ldo voltage set*/ |
| 581 | {0x16, 0xbf, 0}, /*enable port B lprx*/ |
| 582 | |
| 583 | {0x1c, 0x03, 0}, /*PortA clk lane no-LP mode*/ |
| 584 | {0x20, 0x03, 0}, /*PortB clk lane with-LP mode*/ |
| 585 | }; |
| 586 | |
| 587 | if (!pdata || !cfg) { |
| 588 | pr_err("invalid input\n"); |
| 589 | return -EINVAL; |
| 590 | } |
| 591 | |
| 592 | lt9611_write_array(pdata, reg_cfg, sizeof(reg_cfg)); |
| 593 | |
| 594 | return 0; |
| 595 | } |
| 596 | |
| 597 | static int lt9611_mipi_input_digital(struct lt9611 *pdata, |
| 598 | struct lt9611_video_cfg *cfg) |
| 599 | { |
| 600 | u8 lanes = 0; |
| 601 | u8 ports = 0; |
| 602 | struct lt9611_reg_cfg reg_cfg[] = { |
| 603 | {0xff, 0x82, 0}, |
| 604 | {0x4f, 0x80, 0}, |
| 605 | {0x50, 0x10, 0}, |
| 606 | {0xff, 0x83, 0}, |
| 607 | |
| 608 | {0x02, 0x0a, 0}, |
| 609 | {0x06, 0x0a, 0}, |
| 610 | }; |
| 611 | |
| 612 | if (!pdata || !cfg) { |
| 613 | pr_err("invalid input\n"); |
| 614 | return -EINVAL; |
| 615 | } |
| 616 | |
| 617 | lanes = cfg->num_of_lanes; |
| 618 | ports = cfg->num_of_intfs; |
| 619 | |
| 620 | lt9611_write(pdata, 0xff, 0x83); |
| 621 | if (lanes == 4) |
| 622 | lt9611_write(pdata, 0x00, 0x00); |
| 623 | else if (lanes < 4) |
| 624 | lt9611_write(pdata, 0x00, lanes); |
| 625 | else { |
| 626 | pr_err("invalid lane count\n"); |
| 627 | return -EINVAL; |
| 628 | } |
| 629 | |
| 630 | if (ports == 1) |
| 631 | lt9611_write(pdata, 0x0a, 0x00); |
| 632 | else if (ports == 2) |
| 633 | lt9611_write(pdata, 0x0a, 0x03); |
| 634 | else { |
| 635 | pr_err("invalid port count\n"); |
| 636 | return -EINVAL; |
| 637 | } |
| 638 | |
| 639 | lt9611_write_array(pdata, reg_cfg, sizeof(reg_cfg)); |
| 640 | |
| 641 | return 0; |
| 642 | } |
| 643 | |
| 644 | static void lt9611_mipi_video_setup(struct lt9611 *pdata, |
| 645 | struct lt9611_video_cfg *cfg) |
| 646 | { |
| 647 | u32 h_total, h_act, hpw, hfp, hss; |
| 648 | u32 v_total, v_act, vpw, vfp, vss; |
| 649 | |
| 650 | if (!pdata || !cfg) { |
| 651 | pr_err("invalid input\n"); |
| 652 | return; |
| 653 | } |
| 654 | |
| 655 | h_total = cfg->h_active + cfg->h_front_porch + |
| 656 | cfg->h_pulse_width + cfg->h_back_porch; |
| 657 | v_total = cfg->v_active + cfg->v_front_porch + |
| 658 | cfg->v_pulse_width + cfg->v_back_porch; |
| 659 | |
| 660 | h_act = cfg->h_active; |
| 661 | hpw = cfg->h_pulse_width; |
| 662 | hfp = cfg->h_front_porch; |
| 663 | hss = cfg->h_pulse_width + cfg->h_back_porch; |
| 664 | |
| 665 | v_act = cfg->v_active; |
| 666 | vpw = cfg->v_pulse_width; |
| 667 | vfp = cfg->v_front_porch; |
| 668 | vss = cfg->v_pulse_width + cfg->v_back_porch; |
| 669 | |
| 670 | pr_debug("h_total=%d, h_active=%d, hfp=%d, hpw=%d, hbp=%d\n", |
| 671 | h_total, cfg->h_active, cfg->h_front_porch, |
| 672 | cfg->h_pulse_width, cfg->h_back_porch); |
| 673 | |
| 674 | pr_debug("v_total=%d, v_active=%d, vfp=%d, vpw=%d, vbp=%d\n", |
| 675 | v_total, cfg->v_active, cfg->v_front_porch, |
| 676 | cfg->v_pulse_width, cfg->v_back_porch); |
| 677 | |
| 678 | lt9611_write(pdata, 0xff, 0x83); |
| 679 | |
| 680 | lt9611_write(pdata, 0x0d, (u8)(v_total / 256)); |
| 681 | lt9611_write(pdata, 0x0e, (u8)(v_total % 256)); |
| 682 | |
| 683 | lt9611_write(pdata, 0x0f, (u8)(v_act / 256)); |
| 684 | lt9611_write(pdata, 0x10, (u8)(v_act % 256)); |
| 685 | |
| 686 | lt9611_write(pdata, 0x11, (u8)(h_total / 256)); |
| 687 | lt9611_write(pdata, 0x12, (u8)(h_total % 256)); |
| 688 | |
| 689 | lt9611_write(pdata, 0x13, (u8)(h_act / 256)); |
| 690 | lt9611_write(pdata, 0x14, (u8)(h_act % 256)); |
| 691 | |
| 692 | lt9611_write(pdata, 0x15, (u8)(vpw % 256)); |
| 693 | lt9611_write(pdata, 0x16, (u8)(hpw % 256)); |
| 694 | |
| 695 | lt9611_write(pdata, 0x17, (u8)(vfp % 256)); |
| 696 | |
| 697 | lt9611_write(pdata, 0x18, (u8)(vss % 256)); |
| 698 | |
| 699 | lt9611_write(pdata, 0x19, (u8)(hfp % 256)); |
| 700 | |
| 701 | lt9611_write(pdata, 0x1a, (u8)(hss / 256)); |
| 702 | lt9611_write(pdata, 0x1b, (u8)(hss % 256)); |
| 703 | } |
| 704 | |
| 705 | static int lt9611_pcr_setup(struct lt9611 *pdata, |
| 706 | struct lt9611_video_cfg *cfg) |
| 707 | { |
| 708 | u32 h_act = 0; |
| 709 | struct lt9611_reg_cfg reg_cfg[] = { |
| 710 | {0xff, 0x83, 0}, |
Ray Zhang | 56039f5 | 2018-03-07 11:02:21 +0800 | [diff] [blame] | 711 | {0x0b, 0x01, 0}, |
| 712 | {0x0c, 0x10, 0}, |
| 713 | {0x48, 0x00, 0}, |
| 714 | {0x49, 0x81, 0}, |
Ray Zhang | ebb763a | 2018-01-22 10:46:40 +0800 | [diff] [blame] | 715 | |
Ray Zhang | 56039f5 | 2018-03-07 11:02:21 +0800 | [diff] [blame] | 716 | /* stage 1 */ |
| 717 | {0x21, 0x4a, 0}, |
| 718 | {0x24, 0x71, 0}, |
| 719 | {0x25, 0x30, 0}, |
| 720 | {0x2a, 0x01, 0}, |
Ray Zhang | ebb763a | 2018-01-22 10:46:40 +0800 | [diff] [blame] | 721 | |
Ray Zhang | 56039f5 | 2018-03-07 11:02:21 +0800 | [diff] [blame] | 722 | /* stage 2 */ |
| 723 | {0x4a, 0x40, 0}, |
| 724 | {0x1d, 0x10, 0}, |
| 725 | |
| 726 | /* MK limit */ |
| 727 | {0x2d, 0x38, 0}, |
| 728 | {0x31, 0x08, 0}, |
Ray Zhang | ebb763a | 2018-01-22 10:46:40 +0800 | [diff] [blame] | 729 | }; |
| 730 | |
| 731 | if (!pdata || !cfg) { |
| 732 | pr_err("invalid input\n"); |
| 733 | return -EINVAL; |
| 734 | } |
| 735 | |
Ray Zhang | 56039f5 | 2018-03-07 11:02:21 +0800 | [diff] [blame] | 736 | lt9611_write_array(pdata, reg_cfg, sizeof(reg_cfg)); |
| 737 | |
Ray Zhang | ebb763a | 2018-01-22 10:46:40 +0800 | [diff] [blame] | 738 | h_act = cfg->h_active; |
| 739 | |
| 740 | if (h_act == 1920) { |
Ray Zhang | ebb763a | 2018-01-22 10:46:40 +0800 | [diff] [blame] | 741 | lt9611_write(pdata, 0x26, 0x37); |
Ray Zhang | ebb763a | 2018-01-22 10:46:40 +0800 | [diff] [blame] | 742 | } else if (h_act == 3840) { |
Ray Zhang | ebb763a | 2018-01-22 10:46:40 +0800 | [diff] [blame] | 743 | lt9611_write(pdata, 0x0b, 0x03); |
| 744 | lt9611_write(pdata, 0x0c, 0xd0); |
| 745 | lt9611_write(pdata, 0x48, 0x03); |
Ray Zhang | 56039f5 | 2018-03-07 11:02:21 +0800 | [diff] [blame] | 746 | lt9611_write(pdata, 0x49, 0xe0); |
| 747 | lt9611_write(pdata, 0x24, 0x72); |
| 748 | lt9611_write(pdata, 0x25, 0x00); |
| 749 | lt9611_write(pdata, 0x2a, 0x01); |
Ray Zhang | ebb763a | 2018-01-22 10:46:40 +0800 | [diff] [blame] | 750 | lt9611_write(pdata, 0x4a, 0x10); |
| 751 | lt9611_write(pdata, 0x1d, 0x10); |
Ray Zhang | 56039f5 | 2018-03-07 11:02:21 +0800 | [diff] [blame] | 752 | lt9611_write(pdata, 0x26, 0x37); |
| 753 | } else if (h_act == 640) { |
| 754 | lt9611_write(pdata, 0x26, 0x14); |
Ray Zhang | ebb763a | 2018-01-22 10:46:40 +0800 | [diff] [blame] | 755 | } |
| 756 | |
Ray Zhang | 56039f5 | 2018-03-07 11:02:21 +0800 | [diff] [blame] | 757 | /* pcr rst */ |
| 758 | lt9611_write(pdata, 0xff, 0x80); |
| 759 | lt9611_write(pdata, 0x11, 0x5a); |
| 760 | lt9611_write(pdata, 0x11, 0xfa); |
Ray Zhang | ebb763a | 2018-01-22 10:46:40 +0800 | [diff] [blame] | 761 | |
| 762 | return 0; |
| 763 | } |
| 764 | |
| 765 | static int lt9611_pll_setup(struct lt9611 *pdata, |
| 766 | struct lt9611_video_cfg *cfg) |
| 767 | { |
| 768 | u32 pclk = 0; |
| 769 | struct lt9611_reg_cfg reg_cfg[] = { |
| 770 | /* txpll init */ |
| 771 | {0xff, 0x81, 0}, |
| 772 | {0x23, 0x40, 0}, |
| 773 | {0x24, 0x64, 0}, |
| 774 | {0x25, 0x80, 0}, |
| 775 | {0x26, 0x55, 0}, |
| 776 | {0x2c, 0x37, 0}, |
| 777 | {0x2f, 0x01, 0}, |
| 778 | {0x26, 0x55, 0}, |
| 779 | {0x27, 0x66, 0}, |
| 780 | {0x28, 0x88, 0}, |
| 781 | }; |
| 782 | |
| 783 | if (!pdata || !cfg) { |
| 784 | pr_err("invalid input\n"); |
| 785 | return -EINVAL; |
| 786 | } |
| 787 | |
| 788 | pclk = cfg->pclk_khz; |
| 789 | |
| 790 | lt9611_write_array(pdata, reg_cfg, sizeof(reg_cfg)); |
| 791 | |
| 792 | if (pclk > 150000) |
| 793 | lt9611_write(pdata, 0x2d, 0x88); |
| 794 | else if (pclk > 70000) |
| 795 | lt9611_write(pdata, 0x2d, 0x99); |
| 796 | else |
| 797 | lt9611_write(pdata, 0x2d, 0xaa); |
| 798 | |
| 799 | lt9611_write(pdata, 0xff, 0x82); |
| 800 | pclk = pclk / 2; |
| 801 | lt9611_write(pdata, 0xe3, pclk/65536); /* pclk[19:16] */ |
| 802 | pclk = pclk % 65536; |
| 803 | lt9611_write(pdata, 0xe4, pclk/256); /* pclk[15:8] */ |
| 804 | lt9611_write(pdata, 0xe5, pclk%256); /* pclk[7:0] */ |
| 805 | |
| 806 | lt9611_write(pdata, 0xde, 0x20); |
| 807 | lt9611_write(pdata, 0xde, 0xe0); |
| 808 | |
| 809 | lt9611_write(pdata, 0xff, 0x80); |
| 810 | lt9611_write(pdata, 0x16, 0xf1); |
| 811 | lt9611_write(pdata, 0x16, 0xf3); |
| 812 | |
| 813 | return 0; |
| 814 | } |
| 815 | |
| 816 | static int lt9611_video_check(struct lt9611 *pdata) |
| 817 | { |
| 818 | int ret = 0; |
| 819 | u32 v_total, v_act, h_act_a, h_act_b, h_total_sysclk; |
| 820 | u8 temp = 0; |
| 821 | |
| 822 | if (!pdata) { |
| 823 | pr_err("invalid input\n"); |
| 824 | return -EINVAL; |
| 825 | } |
| 826 | |
| 827 | /* top module video check */ |
| 828 | lt9611_write(pdata, 0xff, 0x82); |
| 829 | |
| 830 | /* v_act */ |
| 831 | ret = lt9611_read(pdata, 0x82, &temp, 1); |
| 832 | if (ret) |
| 833 | goto end; |
| 834 | |
| 835 | v_act = temp << 8; |
| 836 | ret = lt9611_read(pdata, 0x83, &temp, 1); |
| 837 | if (ret) |
| 838 | goto end; |
| 839 | v_act = v_act + temp; |
| 840 | |
| 841 | /* v_total */ |
| 842 | ret = lt9611_read(pdata, 0x6c, &temp, 1); |
| 843 | if (ret) |
| 844 | goto end; |
| 845 | v_total = temp << 8; |
| 846 | ret = lt9611_read(pdata, 0x6d, &temp, 1); |
| 847 | if (ret) |
| 848 | goto end; |
| 849 | v_total = v_total + temp; |
| 850 | |
| 851 | /* h_total_sysclk */ |
| 852 | ret = lt9611_read(pdata, 0x86, &temp, 1); |
| 853 | if (ret) |
| 854 | goto end; |
| 855 | h_total_sysclk = temp << 8; |
| 856 | ret = lt9611_read(pdata, 0x87, &temp, 1); |
| 857 | if (ret) |
| 858 | goto end; |
| 859 | h_total_sysclk = h_total_sysclk + temp; |
| 860 | |
| 861 | /* h_act_a */ |
| 862 | lt9611_write(pdata, 0xff, 0x83); |
| 863 | ret = lt9611_read(pdata, 0x82, &temp, 1); |
| 864 | if (ret) |
| 865 | goto end; |
| 866 | h_act_a = temp << 8; |
| 867 | ret = lt9611_read(pdata, 0x83, &temp, 1); |
| 868 | if (ret) |
| 869 | goto end; |
| 870 | h_act_a = (h_act_a + temp)/3; |
| 871 | |
| 872 | /* h_act_b */ |
| 873 | lt9611_write(pdata, 0xff, 0x83); |
| 874 | ret = lt9611_read(pdata, 0x86, &temp, 1); |
| 875 | if (ret) |
| 876 | goto end; |
| 877 | h_act_b = temp << 8; |
| 878 | ret = lt9611_read(pdata, 0x87, &temp, 1); |
| 879 | if (ret) |
| 880 | goto end; |
| 881 | h_act_b = (h_act_b + temp)/3; |
| 882 | |
| 883 | pr_info("video check: h_act_a=%d, h_act_b=%d, v_act=%d, v_total=%d, h_total_sysclk=%d\n", |
| 884 | h_act_a, h_act_b, v_act, v_total, h_total_sysclk); |
| 885 | |
| 886 | return 0; |
| 887 | |
| 888 | end: |
| 889 | pr_err("read video check error\n"); |
| 890 | return ret; |
| 891 | } |
| 892 | |
| 893 | static int lt9611_hdmi_tx_digital(struct lt9611 *pdata, |
| 894 | struct lt9611_video_cfg *cfg) |
| 895 | { |
| 896 | int ret = -EINVAL; |
| 897 | u32 checksum, vic; |
| 898 | |
| 899 | if (!pdata || !cfg) { |
| 900 | pr_err("invalid input\n"); |
| 901 | return ret; |
| 902 | } |
| 903 | |
| 904 | vic = cfg->vic; |
| 905 | checksum = 0x46 - vic; |
| 906 | |
| 907 | lt9611_write(pdata, 0xff, 0x84); |
| 908 | lt9611_write(pdata, 0x43, checksum); |
| 909 | lt9611_write(pdata, 0x44, 0x84); |
| 910 | lt9611_write(pdata, 0x47, vic); |
| 911 | |
| 912 | lt9611_write(pdata, 0xff, 0x82); |
| 913 | lt9611_write(pdata, 0xd6, 0x8c); |
| 914 | lt9611_write(pdata, 0xd7, 0x04); |
| 915 | |
| 916 | return ret; |
| 917 | } |
| 918 | |
| 919 | static int lt9611_hdmi_tx_phy(struct lt9611 *pdata, |
| 920 | struct lt9611_video_cfg *cfg) |
| 921 | { |
| 922 | int ret = -EINVAL; |
| 923 | struct lt9611_reg_cfg reg_cfg[] = { |
| 924 | {0xff, 0x81, 0}, |
| 925 | {0x30, 0x6a, 0}, |
| 926 | {0x31, 0x44, 0}, /* HDMI DC mode */ |
| 927 | {0x32, 0x4a, 0}, |
| 928 | {0x33, 0x0b, 0}, |
| 929 | {0x34, 0x00, 0}, |
| 930 | {0x35, 0x00, 0}, |
| 931 | {0x36, 0x00, 0}, |
| 932 | {0x37, 0x44, 0}, |
| 933 | {0x3f, 0x0f, 0}, |
| 934 | {0x40, 0xa0, 0}, |
| 935 | {0x41, 0xa0, 0}, |
| 936 | {0x42, 0xa0, 0}, |
| 937 | {0x43, 0xa0, 0}, |
| 938 | {0x44, 0x0a, 0}, |
| 939 | }; |
| 940 | |
| 941 | if (!pdata || !cfg) { |
| 942 | pr_err("invalid input\n"); |
| 943 | return ret; |
| 944 | } |
| 945 | |
| 946 | /* HDMI AC mode */ |
| 947 | if (pdata->ac_mode) |
| 948 | reg_cfg[2].val = 0x73; |
| 949 | |
| 950 | lt9611_write_array(pdata, reg_cfg, sizeof(reg_cfg)); |
| 951 | |
| 952 | return ret; |
| 953 | } |
| 954 | |
| 955 | static void lt9611_hdmi_output_enable(struct lt9611 *pdata) |
| 956 | { |
| 957 | lt9611_write(pdata, 0xff, 0x81); |
| 958 | lt9611_write(pdata, 0x30, 0xea); |
| 959 | } |
| 960 | |
| 961 | static void lt9611_hdmi_output_disable(struct lt9611 *pdata) |
| 962 | { |
| 963 | lt9611_write(pdata, 0xff, 0x81); |
| 964 | lt9611_write(pdata, 0x30, 0x6a); |
| 965 | } |
| 966 | |
| 967 | static irqreturn_t lt9611_irq_thread_handler(int irq, void *dev_id) |
| 968 | { |
| 969 | struct lt9611 *pdata = dev_id; |
| 970 | u8 irq_flag0 = 0; |
| 971 | u8 irq_flag3 = 0; |
| 972 | |
| 973 | lt9611_write(pdata, 0xff, 0x82); |
| 974 | lt9611_read(pdata, 0x0f, &irq_flag3, 1); |
| 975 | lt9611_read(pdata, 0x0c, &irq_flag0, 1); |
| 976 | |
| 977 | /* hpd changed low */ |
| 978 | if (irq_flag3 & 0x80) { |
| 979 | pr_info("hdmi cable disconnected\n"); |
| 980 | |
| 981 | lt9611_write(pdata, 0xff, 0x82); /* irq 3 clear flag */ |
| 982 | lt9611_write(pdata, 0x07, 0xbf); |
| 983 | lt9611_write(pdata, 0x07, 0x3f); |
| 984 | } |
| 985 | /* hpd changed high */ |
| 986 | if (irq_flag3 & 0x40) { |
| 987 | pr_info("hdmi cable connected\n"); |
| 988 | |
| 989 | lt9611_write(pdata, 0xff, 0x82); /* irq 3 clear flag */ |
| 990 | lt9611_write(pdata, 0x07, 0x7f); |
| 991 | lt9611_write(pdata, 0x07, 0x3f); |
| 992 | } |
| 993 | |
| 994 | /* video input changed */ |
| 995 | if (irq_flag0 & 0x01) { |
| 996 | pr_info("video input changed\n"); |
| 997 | lt9611_write(pdata, 0xff, 0x82); /* irq 0 clear flag */ |
| 998 | lt9611_write(pdata, 0x9e, 0xff); |
| 999 | lt9611_write(pdata, 0x9e, 0xf7); |
| 1000 | lt9611_write(pdata, 0x04, 0xff); |
| 1001 | lt9611_write(pdata, 0x04, 0xfe); |
| 1002 | } |
| 1003 | |
| 1004 | return IRQ_HANDLED; |
| 1005 | } |
| 1006 | |
| 1007 | static int lt9611_enable_interrupts(struct lt9611 *pdata, int interrupts) |
| 1008 | { |
| 1009 | int ret = 0; |
| 1010 | u8 reg_val = 0; |
| 1011 | u8 init_reg_val; |
| 1012 | |
| 1013 | if (!pdata) { |
| 1014 | pr_err("invalid input\n"); |
| 1015 | goto end; |
| 1016 | } |
| 1017 | |
| 1018 | if (interrupts & CFG_VID_CHK_INTERRUPTS) { |
| 1019 | lt9611_write(pdata, 0xff, 0x82); |
| 1020 | lt9611_read(pdata, 0x00, ®_val, 1); |
| 1021 | |
| 1022 | if (reg_val & 0x01) { |
| 1023 | init_reg_val = reg_val & 0xfe; |
| 1024 | pr_debug("enabling video check interrupts\n"); |
| 1025 | lt9611_write(pdata, 0x00, init_reg_val); |
| 1026 | } |
| 1027 | lt9611_write(pdata, 0x04, 0xff); /* clear */ |
| 1028 | lt9611_write(pdata, 0x04, 0xfe); |
| 1029 | } |
| 1030 | |
| 1031 | if (interrupts & CFG_HPD_INTERRUPTS) { |
| 1032 | lt9611_write(pdata, 0xff, 0x82); |
| 1033 | lt9611_read(pdata, 0x03, ®_val, 1); |
| 1034 | |
| 1035 | if (reg_val & 0xc0) { //reg_val | 0xc0??? |
| 1036 | init_reg_val = reg_val & 0x3f; |
| 1037 | pr_debug("enabling hpd interrupts\n"); |
| 1038 | lt9611_write(pdata, 0x03, init_reg_val); |
| 1039 | } |
| 1040 | |
| 1041 | lt9611_write(pdata, 0x07, 0xff); //clear |
| 1042 | lt9611_write(pdata, 0x07, 0x3f); |
| 1043 | } |
| 1044 | |
| 1045 | end: |
| 1046 | return ret; |
| 1047 | } |
| 1048 | |
| 1049 | static void lt9611_pcr_mk_debug(struct lt9611 *pdata) |
| 1050 | { |
| 1051 | u8 m = 0, k1 = 0, k2 = 0, k3 = 0; |
| 1052 | |
| 1053 | lt9611_write(pdata, 0xff, 0x83); |
| 1054 | lt9611_read(pdata, 0xb4, &m, 1); |
| 1055 | lt9611_read(pdata, 0xb5, &k1, 1); |
| 1056 | lt9611_read(pdata, 0xb6, &k2, 1); |
| 1057 | lt9611_read(pdata, 0xb7, &k3, 1); |
| 1058 | |
| 1059 | pr_info("pcr mk:0x%x 0x%x 0x%x 0x%x\n", |
| 1060 | m, k1, k2, k3); |
| 1061 | } |
| 1062 | |
| 1063 | static void lt9611_sleep_setup(struct lt9611 *pdata) |
| 1064 | { |
| 1065 | struct lt9611_reg_cfg sleep_setup[] = { |
| 1066 | {0xff, 0x80, 0}, //register I2C addr |
| 1067 | {0x24, 0x76, 0}, |
| 1068 | {0x23, 0x01, 0}, |
| 1069 | {0xff, 0x81, 0}, //set addr pin as output |
| 1070 | {0x57, 0x03, 0}, |
| 1071 | {0x49, 0x0b, 0}, |
| 1072 | {0xff, 0x81, 0}, //anlog power down |
| 1073 | {0x51, 0x30, 0}, //disable IRQ |
| 1074 | {0x02, 0x48, 0}, //MIPI Rx power down |
| 1075 | {0x23, 0x80, 0}, |
| 1076 | {0x30, 0x00, 0}, |
| 1077 | {0x00, 0x01, 0}, //bandgap power down |
| 1078 | {0x01, 0x00, 0}, //system clk power down |
| 1079 | }; |
| 1080 | |
| 1081 | pr_err("sleep\n"); |
| 1082 | |
| 1083 | lt9611_write_array(pdata, sleep_setup, sizeof(sleep_setup)); |
| 1084 | } |
| 1085 | |
| 1086 | static int lt9611_power_on(struct lt9611 *pdata, bool on) |
| 1087 | { |
| 1088 | int ret = 0; |
| 1089 | |
| 1090 | pr_debug("power_on: on=%d\n", on); |
| 1091 | |
| 1092 | if (on && !pdata->power_on) { |
| 1093 | lt9611_write_array(pdata, lt9611_init_setup, |
| 1094 | sizeof(lt9611_init_setup)); |
| 1095 | |
| 1096 | ret = lt9611_enable_interrupts(pdata, CFG_HPD_INTERRUPTS); |
| 1097 | if (ret) { |
| 1098 | pr_err("Failed to enable HPD intr %d\n", ret); |
| 1099 | return ret; |
| 1100 | } |
| 1101 | pdata->power_on = true; |
| 1102 | } else if (!on) { |
| 1103 | lt9611_write(pdata, 0xff, 0x81); |
| 1104 | lt9611_write(pdata, 0x30, 0x6a); |
| 1105 | |
| 1106 | pdata->power_on = false; |
| 1107 | } |
| 1108 | |
| 1109 | return ret; |
| 1110 | } |
| 1111 | |
| 1112 | static int lt9611_video_on(struct lt9611 *pdata, bool on) |
| 1113 | { |
| 1114 | int ret = 0; |
| 1115 | struct lt9611_video_cfg *cfg = &pdata->video_cfg; |
| 1116 | |
| 1117 | pr_debug("on=%d\n", on); |
| 1118 | |
| 1119 | if (on) { |
| 1120 | lt9611_mipi_input_analog(pdata, cfg); |
| 1121 | lt9611_mipi_input_digital(pdata, cfg); |
| 1122 | lt9611_pll_setup(pdata, cfg); |
| 1123 | lt9611_mipi_video_setup(pdata, cfg); |
| 1124 | lt9611_pcr_setup(pdata, cfg); |
| 1125 | lt9611_hdmi_tx_digital(pdata, cfg); |
| 1126 | lt9611_hdmi_tx_phy(pdata, cfg); |
| 1127 | |
| 1128 | msleep(500); |
| 1129 | |
| 1130 | lt9611_video_check(pdata); |
| 1131 | lt9611_hdmi_output_enable(pdata); |
| 1132 | } else { |
| 1133 | lt9611_hdmi_output_disable(pdata); |
| 1134 | } |
| 1135 | |
| 1136 | return ret; |
| 1137 | } |
| 1138 | |
| 1139 | static void lt9611_mipi_byte_clk_debug(struct lt9611 *pdata) |
| 1140 | { |
| 1141 | u8 reg_val = 0; |
| 1142 | u32 byte_clk; |
| 1143 | |
| 1144 | /* port A byte clk meter */ |
| 1145 | lt9611_write(pdata, 0xff, 0x82); |
| 1146 | lt9611_write(pdata, 0xc7, 0x03); /* port A */ |
| 1147 | msleep(50); |
| 1148 | lt9611_read(pdata, 0xcd, ®_val, 1); |
| 1149 | |
| 1150 | if ((reg_val & 0x60) == 0x60) { |
| 1151 | byte_clk = (reg_val & 0x0f) * 65536; |
| 1152 | lt9611_read(pdata, 0xce, ®_val, 1); |
| 1153 | byte_clk = byte_clk + reg_val * 256; |
| 1154 | lt9611_read(pdata, 0xcf, ®_val, 1); |
| 1155 | byte_clk = byte_clk + reg_val; |
| 1156 | |
| 1157 | pr_info("port A byte clk = %d khz,\n", byte_clk); |
| 1158 | } else |
| 1159 | pr_info("port A byte clk unstable\n"); |
| 1160 | |
| 1161 | /* port B byte clk meter */ |
| 1162 | lt9611_write(pdata, 0xff, 0x82); |
| 1163 | lt9611_write(pdata, 0xc7, 0x04); /* port B */ |
| 1164 | msleep(50); |
| 1165 | lt9611_read(pdata, 0xcd, ®_val, 1); |
| 1166 | |
| 1167 | if ((reg_val & 0x60) == 0x60) { |
| 1168 | byte_clk = (reg_val & 0x0f) * 65536; |
| 1169 | lt9611_read(pdata, 0xce, ®_val, 1); |
| 1170 | byte_clk = byte_clk + reg_val * 256; |
| 1171 | lt9611_read(pdata, 0xcf, ®_val, 1); |
| 1172 | byte_clk = byte_clk + reg_val; |
| 1173 | |
| 1174 | pr_info("port B byte clk = %d khz,\n", byte_clk); |
| 1175 | } else |
| 1176 | pr_info("port B byte clk unstable\n"); |
| 1177 | } |
| 1178 | |
| 1179 | static void lt9611_reset(struct lt9611 *pdata) |
| 1180 | { |
| 1181 | gpio_set_value(pdata->reset_gpio, 1); |
| 1182 | msleep(20); |
| 1183 | gpio_set_value(pdata->reset_gpio, 0); |
| 1184 | msleep(20); |
| 1185 | gpio_set_value(pdata->reset_gpio, 1); |
| 1186 | msleep(20); |
| 1187 | } |
| 1188 | |
| 1189 | static void lt9611_assert_5v(struct lt9611 *pdata) |
| 1190 | { |
| 1191 | if (gpio_is_valid(pdata->hdmi_en_gpio)) { |
| 1192 | gpio_set_value(pdata->hdmi_en_gpio, 1); |
| 1193 | msleep(20); |
| 1194 | } |
| 1195 | } |
| 1196 | |
| 1197 | static int lt9611_config_vreg(struct device *dev, |
| 1198 | struct lt9611_vreg *in_vreg, int num_vreg, bool config) |
| 1199 | { |
| 1200 | int i = 0, rc = 0; |
| 1201 | struct lt9611_vreg *curr_vreg = NULL; |
| 1202 | |
| 1203 | if (!in_vreg || !num_vreg) |
| 1204 | return rc; |
| 1205 | |
| 1206 | if (config) { |
| 1207 | for (i = 0; i < num_vreg; i++) { |
| 1208 | curr_vreg = &in_vreg[i]; |
| 1209 | curr_vreg->vreg = regulator_get(dev, |
| 1210 | curr_vreg->vreg_name); |
| 1211 | rc = PTR_RET(curr_vreg->vreg); |
| 1212 | if (rc) { |
| 1213 | pr_err("%s get failed. rc=%d\n", |
| 1214 | curr_vreg->vreg_name, rc); |
| 1215 | curr_vreg->vreg = NULL; |
| 1216 | goto vreg_get_fail; |
| 1217 | } |
| 1218 | |
| 1219 | rc = regulator_set_voltage( |
| 1220 | curr_vreg->vreg, |
| 1221 | curr_vreg->min_voltage, |
| 1222 | curr_vreg->max_voltage); |
| 1223 | if (rc < 0) { |
| 1224 | pr_err("%s set vltg fail\n", |
| 1225 | curr_vreg->vreg_name); |
| 1226 | goto vreg_set_voltage_fail; |
| 1227 | } |
| 1228 | } |
| 1229 | } else { |
| 1230 | for (i = num_vreg-1; i >= 0; i--) { |
| 1231 | curr_vreg = &in_vreg[i]; |
| 1232 | if (curr_vreg->vreg) { |
| 1233 | regulator_set_voltage(curr_vreg->vreg, |
| 1234 | 0, curr_vreg->max_voltage); |
| 1235 | |
| 1236 | regulator_put(curr_vreg->vreg); |
| 1237 | curr_vreg->vreg = NULL; |
| 1238 | } |
| 1239 | } |
| 1240 | } |
| 1241 | return 0; |
| 1242 | |
| 1243 | vreg_unconfig: |
| 1244 | regulator_set_load(curr_vreg->vreg, 0); |
| 1245 | |
| 1246 | vreg_set_voltage_fail: |
| 1247 | regulator_put(curr_vreg->vreg); |
| 1248 | curr_vreg->vreg = NULL; |
| 1249 | |
| 1250 | vreg_get_fail: |
| 1251 | for (i--; i >= 0; i--) { |
| 1252 | curr_vreg = &in_vreg[i]; |
| 1253 | goto vreg_unconfig; |
| 1254 | } |
| 1255 | return rc; |
| 1256 | } |
| 1257 | |
| 1258 | static int lt9611_get_dt_supply(struct device *dev, |
| 1259 | struct lt9611 *pdata) |
| 1260 | { |
| 1261 | int i = 0, rc = 0; |
| 1262 | u32 tmp = 0; |
| 1263 | struct device_node *of_node = NULL, *supply_root_node = NULL; |
| 1264 | struct device_node *supply_node = NULL; |
| 1265 | |
| 1266 | if (!dev || !pdata) { |
| 1267 | pr_err("invalid input param dev:%pK pdata:%pK\n", dev, pdata); |
| 1268 | return -EINVAL; |
| 1269 | } |
| 1270 | |
| 1271 | of_node = dev->of_node; |
| 1272 | |
| 1273 | pdata->num_vreg = 0; |
| 1274 | supply_root_node = of_get_child_by_name(of_node, |
| 1275 | "lt,supply-entries"); |
| 1276 | if (!supply_root_node) { |
| 1277 | pr_info("no supply entry present\n"); |
| 1278 | return 0; |
| 1279 | } |
| 1280 | |
| 1281 | pdata->num_vreg = of_get_available_child_count(supply_root_node); |
| 1282 | if (pdata->num_vreg == 0) { |
| 1283 | pr_info("no vreg present\n"); |
| 1284 | return 0; |
| 1285 | } |
| 1286 | |
| 1287 | pr_debug("vreg found. count=%d\n", pdata->num_vreg); |
| 1288 | pdata->vreg_config = devm_kzalloc(dev, sizeof(struct lt9611_vreg) * |
| 1289 | pdata->num_vreg, GFP_KERNEL); |
| 1290 | if (!pdata->vreg_config) |
| 1291 | return -ENOMEM; |
| 1292 | |
| 1293 | for_each_available_child_of_node(supply_root_node, supply_node) { |
| 1294 | const char *st = NULL; |
| 1295 | |
| 1296 | rc = of_property_read_string(supply_node, |
| 1297 | "lt,supply-name", &st); |
| 1298 | if (rc) { |
| 1299 | pr_err("error reading name. rc=%d\n", rc); |
| 1300 | goto error; |
| 1301 | } |
| 1302 | |
| 1303 | strlcpy(pdata->vreg_config[i].vreg_name, st, |
| 1304 | sizeof(pdata->vreg_config[i].vreg_name)); |
| 1305 | |
| 1306 | rc = of_property_read_u32(supply_node, |
| 1307 | "lt,supply-min-voltage", &tmp); |
| 1308 | if (rc) { |
| 1309 | pr_err("error reading min volt. rc=%d\n", rc); |
| 1310 | goto error; |
| 1311 | } |
| 1312 | pdata->vreg_config[i].min_voltage = tmp; |
| 1313 | |
| 1314 | rc = of_property_read_u32(supply_node, |
| 1315 | "lt,supply-max-voltage", &tmp); |
| 1316 | if (rc) { |
| 1317 | pr_err("error reading max volt. rc=%d\n", rc); |
| 1318 | goto error; |
| 1319 | } |
| 1320 | pdata->vreg_config[i].max_voltage = tmp; |
| 1321 | |
| 1322 | rc = of_property_read_u32(supply_node, |
| 1323 | "lt,supply-enable-load", &tmp); |
| 1324 | if (rc) |
| 1325 | pr_debug("no supply enable load value. rc=%d\n", rc); |
| 1326 | |
| 1327 | pdata->vreg_config[i].enable_load = (!rc ? tmp : 0); |
| 1328 | |
| 1329 | rc = of_property_read_u32(supply_node, |
| 1330 | "lt,supply-disable-load", &tmp); |
| 1331 | if (rc) |
| 1332 | pr_debug("no supply disable load value. rc=%d\n", rc); |
| 1333 | |
| 1334 | pdata->vreg_config[i].disable_load = (!rc ? tmp : 0); |
| 1335 | |
| 1336 | rc = of_property_read_u32(supply_node, |
| 1337 | "lt,supply-pre-on-sleep", &tmp); |
| 1338 | if (rc) |
| 1339 | pr_debug("no supply pre on sleep value. rc=%d\n", rc); |
| 1340 | |
| 1341 | pdata->vreg_config[i].pre_on_sleep = (!rc ? tmp : 0); |
| 1342 | |
| 1343 | rc = of_property_read_u32(supply_node, |
| 1344 | "lt,supply-pre-off-sleep", &tmp); |
| 1345 | if (rc) |
| 1346 | pr_debug("no supply pre off sleep value. rc=%d\n", rc); |
| 1347 | |
| 1348 | pdata->vreg_config[i].pre_off_sleep = (!rc ? tmp : 0); |
| 1349 | |
| 1350 | rc = of_property_read_u32(supply_node, |
| 1351 | "lt,supply-post-on-sleep", &tmp); |
| 1352 | if (rc) |
| 1353 | pr_debug("no supply post on sleep value. rc=%d\n", rc); |
| 1354 | |
| 1355 | pdata->vreg_config[i].post_on_sleep = (!rc ? tmp : 0); |
| 1356 | |
| 1357 | rc = of_property_read_u32(supply_node, |
| 1358 | "lt,supply-post-off-sleep", &tmp); |
| 1359 | if (rc) |
| 1360 | pr_debug("no supply post off sleep value. rc=%d\n", rc); |
| 1361 | |
| 1362 | pdata->vreg_config[i].post_off_sleep = (!rc ? tmp : 0); |
| 1363 | |
| 1364 | pr_debug("%s min=%d, max=%d, enable=%d, disable=%d, preonsleep=%d, postonsleep=%d, preoffsleep=%d, postoffsleep=%d\n", |
| 1365 | pdata->vreg_config[i].vreg_name, |
| 1366 | pdata->vreg_config[i].min_voltage, |
| 1367 | pdata->vreg_config[i].max_voltage, |
| 1368 | pdata->vreg_config[i].enable_load, |
| 1369 | pdata->vreg_config[i].disable_load, |
| 1370 | pdata->vreg_config[i].pre_on_sleep, |
| 1371 | pdata->vreg_config[i].post_on_sleep, |
| 1372 | pdata->vreg_config[i].pre_off_sleep, |
| 1373 | pdata->vreg_config[i].post_off_sleep); |
| 1374 | ++i; |
| 1375 | |
| 1376 | rc = 0; |
| 1377 | } |
| 1378 | |
| 1379 | rc = lt9611_config_vreg(dev, |
| 1380 | pdata->vreg_config, pdata->num_vreg, true); |
| 1381 | if (rc) |
| 1382 | goto error; |
| 1383 | |
| 1384 | return rc; |
| 1385 | |
| 1386 | error: |
| 1387 | if (pdata->vreg_config) { |
| 1388 | devm_kfree(dev, pdata->vreg_config); |
| 1389 | pdata->vreg_config = NULL; |
| 1390 | pdata->num_vreg = 0; |
| 1391 | } |
| 1392 | |
| 1393 | return rc; |
| 1394 | } |
| 1395 | |
| 1396 | static void lt9611_put_dt_supply(struct device *dev, |
| 1397 | struct lt9611 *pdata) |
| 1398 | { |
| 1399 | if (!dev || !pdata) { |
| 1400 | pr_err("invalid input param dev:%pK pdata:%pK\n", dev, pdata); |
| 1401 | return; |
| 1402 | } |
| 1403 | |
| 1404 | lt9611_config_vreg(dev, |
| 1405 | pdata->vreg_config, pdata->num_vreg, false); |
| 1406 | |
| 1407 | if (pdata->vreg_config) { |
| 1408 | devm_kfree(dev, pdata->vreg_config); |
| 1409 | pdata->vreg_config = NULL; |
| 1410 | } |
| 1411 | pdata->num_vreg = 0; |
| 1412 | } |
| 1413 | |
| 1414 | static int lt9611_enable_vreg(struct lt9611 *pdata, int enable) |
| 1415 | { |
| 1416 | int i = 0, rc = 0; |
| 1417 | bool need_sleep; |
| 1418 | struct lt9611_vreg *in_vreg = pdata->vreg_config; |
| 1419 | int num_vreg = pdata->num_vreg; |
| 1420 | |
| 1421 | if (enable) { |
| 1422 | for (i = 0; i < num_vreg; i++) { |
| 1423 | rc = PTR_RET(in_vreg[i].vreg); |
| 1424 | if (rc) { |
| 1425 | pr_err("%s regulator error. rc=%d\n", |
| 1426 | in_vreg[i].vreg_name, rc); |
| 1427 | goto vreg_set_opt_mode_fail; |
| 1428 | } |
| 1429 | need_sleep = !regulator_is_enabled(in_vreg[i].vreg); |
| 1430 | if (in_vreg[i].pre_on_sleep && need_sleep) |
| 1431 | usleep_range(in_vreg[i].pre_on_sleep * 1000, |
| 1432 | in_vreg[i].pre_on_sleep * 1000); |
| 1433 | rc = regulator_set_load(in_vreg[i].vreg, |
| 1434 | in_vreg[i].enable_load); |
| 1435 | if (rc < 0) { |
| 1436 | pr_err("%s set opt m fail\n", |
| 1437 | in_vreg[i].vreg_name); |
| 1438 | goto vreg_set_opt_mode_fail; |
| 1439 | } |
| 1440 | rc = regulator_enable(in_vreg[i].vreg); |
| 1441 | if (in_vreg[i].post_on_sleep && need_sleep) |
| 1442 | usleep_range(in_vreg[i].post_on_sleep * 1000, |
| 1443 | in_vreg[i].post_on_sleep * 1000); |
| 1444 | if (rc < 0) { |
| 1445 | pr_err("%s enable failed\n", |
| 1446 | in_vreg[i].vreg_name); |
| 1447 | goto disable_vreg; |
| 1448 | } |
| 1449 | } |
| 1450 | } else { |
| 1451 | for (i = num_vreg-1; i >= 0; i--) { |
| 1452 | if (in_vreg[i].pre_off_sleep) |
| 1453 | usleep_range(in_vreg[i].pre_off_sleep * 1000, |
| 1454 | in_vreg[i].pre_off_sleep * 1000); |
| 1455 | regulator_set_load(in_vreg[i].vreg, |
| 1456 | in_vreg[i].disable_load); |
| 1457 | regulator_disable(in_vreg[i].vreg); |
| 1458 | if (in_vreg[i].post_off_sleep) |
| 1459 | usleep_range(in_vreg[i].post_off_sleep * 1000, |
| 1460 | in_vreg[i].post_off_sleep * 1000); |
| 1461 | } |
| 1462 | } |
| 1463 | return rc; |
| 1464 | |
| 1465 | disable_vreg: |
| 1466 | regulator_set_load(in_vreg[i].vreg, in_vreg[i].disable_load); |
| 1467 | |
| 1468 | vreg_set_opt_mode_fail: |
| 1469 | for (i--; i >= 0; i--) { |
| 1470 | if (in_vreg[i].pre_off_sleep) |
| 1471 | usleep_range(in_vreg[i].pre_off_sleep * 1000, |
| 1472 | in_vreg[i].pre_off_sleep * 1000); |
| 1473 | regulator_set_load(in_vreg[i].vreg, |
| 1474 | in_vreg[i].disable_load); |
| 1475 | regulator_disable(in_vreg[i].vreg); |
| 1476 | if (in_vreg[i].post_off_sleep) |
| 1477 | usleep_range(in_vreg[i].post_off_sleep * 1000, |
| 1478 | in_vreg[i].post_off_sleep * 1000); |
| 1479 | } |
| 1480 | |
| 1481 | return rc; |
| 1482 | } |
| 1483 | |
| 1484 | static struct lt9611_timing_info *lt9611_get_supported_timing( |
| 1485 | struct drm_display_mode *mode) { |
| 1486 | int i = 0; |
| 1487 | |
| 1488 | while (lt9611_supp_timing_cfg[i].xres != 0xffff) { |
| 1489 | if (lt9611_supp_timing_cfg[i].xres == mode->hdisplay && |
| 1490 | lt9611_supp_timing_cfg[i].yres == mode->vdisplay && |
| 1491 | lt9611_supp_timing_cfg[i].fps == |
| 1492 | drm_mode_vrefresh(mode)) { |
| 1493 | return <9611_supp_timing_cfg[i]; |
| 1494 | } |
| 1495 | i++; |
| 1496 | } |
| 1497 | |
| 1498 | return NULL; |
| 1499 | } |
| 1500 | |
| 1501 | /* TODO: intf/lane number needs info from both DSI host and client */ |
| 1502 | static int lt9611_get_intf_num(struct lt9611 *pdata, |
| 1503 | struct drm_display_mode *mode) |
| 1504 | { |
| 1505 | int num_of_intfs = 0; |
| 1506 | struct lt9611_timing_info *timing = |
| 1507 | lt9611_get_supported_timing(mode); |
| 1508 | |
| 1509 | if (timing) |
| 1510 | num_of_intfs = timing->intfs; |
| 1511 | else { |
| 1512 | pr_err("interface number not defined by bridge chip\n"); |
| 1513 | num_of_intfs = 0; |
| 1514 | } |
| 1515 | |
| 1516 | return num_of_intfs; |
| 1517 | } |
| 1518 | |
| 1519 | static int lt9611_get_lane_num(struct lt9611 *pdata, |
| 1520 | struct drm_display_mode *mode) |
| 1521 | { |
| 1522 | int num_of_lanes = 0; |
| 1523 | struct lt9611_timing_info *timing = |
| 1524 | lt9611_get_supported_timing(mode); |
| 1525 | |
| 1526 | if (timing) |
| 1527 | num_of_lanes = timing->lanes; |
| 1528 | else { |
| 1529 | pr_err("lane number not defined by bridge chip\n"); |
| 1530 | num_of_lanes = 0; |
| 1531 | } |
| 1532 | |
| 1533 | return num_of_lanes; |
| 1534 | } |
| 1535 | |
| 1536 | static void lt9611_get_video_cfg(struct lt9611 *pdata, |
| 1537 | struct drm_display_mode *mode, |
| 1538 | struct lt9611_video_cfg *video_cfg) |
| 1539 | { |
| 1540 | int rc = 0; |
| 1541 | struct hdmi_avi_infoframe avi_frame; |
| 1542 | |
| 1543 | memset(&avi_frame, 0, sizeof(avi_frame)); |
| 1544 | |
| 1545 | video_cfg->h_active = mode->hdisplay; |
| 1546 | video_cfg->v_active = mode->vdisplay; |
| 1547 | video_cfg->h_front_porch = mode->hsync_start - mode->hdisplay; |
| 1548 | video_cfg->v_front_porch = mode->vsync_start - mode->vdisplay; |
| 1549 | video_cfg->h_back_porch = mode->htotal - mode->hsync_end; |
| 1550 | video_cfg->v_back_porch = mode->vtotal - mode->vsync_end; |
| 1551 | video_cfg->h_pulse_width = mode->hsync_end - mode->hsync_start; |
| 1552 | video_cfg->v_pulse_width = mode->vsync_end - mode->vsync_start; |
| 1553 | video_cfg->pclk_khz = mode->clock; |
| 1554 | |
| 1555 | video_cfg->h_polarity = !!(mode->flags & DRM_MODE_FLAG_PHSYNC); |
| 1556 | video_cfg->v_polarity = !!(mode->flags & DRM_MODE_FLAG_PVSYNC); |
| 1557 | |
| 1558 | video_cfg->num_of_lanes = lt9611_get_lane_num(pdata, mode); |
| 1559 | video_cfg->num_of_intfs = lt9611_get_intf_num(pdata, mode); |
| 1560 | |
| 1561 | pr_debug("video=h[%d,%d,%d,%d] v[%d,%d,%d,%d] pclk=%d lane=%d intf=%d\n", |
| 1562 | video_cfg->h_active, video_cfg->h_front_porch, |
| 1563 | video_cfg->h_pulse_width, video_cfg->h_back_porch, |
| 1564 | video_cfg->v_active, video_cfg->v_front_porch, |
| 1565 | video_cfg->v_pulse_width, video_cfg->v_back_porch, |
| 1566 | video_cfg->pclk_khz, video_cfg->num_of_lanes, |
| 1567 | video_cfg->num_of_intfs); |
| 1568 | |
| 1569 | rc = drm_hdmi_avi_infoframe_from_display_mode(&avi_frame, mode); |
| 1570 | if (rc) { |
| 1571 | pr_err("get avi frame failed ret=%d\n", rc); |
| 1572 | } else { |
| 1573 | video_cfg->scaninfo = avi_frame.scan_mode; |
| 1574 | video_cfg->ar = avi_frame.picture_aspect; |
| 1575 | video_cfg->vic = avi_frame.video_code; |
| 1576 | pr_debug("scaninfo=%d ar=%d vic=%d\n", |
| 1577 | video_cfg->scaninfo, video_cfg->ar, video_cfg->vic); |
| 1578 | } |
| 1579 | } |
| 1580 | |
| 1581 | /* connector funcs */ |
| 1582 | static enum drm_connector_status |
| 1583 | lt9611_connector_detect(struct drm_connector *connector, bool force) |
| 1584 | { |
| 1585 | struct lt9611 *pdata = connector_to_lt9611(connector); |
| 1586 | |
| 1587 | if (!pdata->non_pluggable) { |
| 1588 | u8 reg_val = 0; |
| 1589 | int connected = 0; |
| 1590 | |
| 1591 | lt9611_write(pdata, 0xff, 0x82); |
| 1592 | lt9611_read(pdata, 0x5e, ®_val, 1); |
| 1593 | connected = (reg_val & BIT(2)); |
| 1594 | pr_debug("connected = %x\n", connected); |
| 1595 | |
| 1596 | pdata->status = connected ? connector_status_connected : |
| 1597 | connector_status_disconnected; |
| 1598 | } else |
| 1599 | pdata->status = connector_status_connected; |
| 1600 | |
| 1601 | return pdata->status; |
| 1602 | } |
| 1603 | |
| 1604 | static int lt9611_read_edid(struct lt9611 *pdata) |
| 1605 | { |
| 1606 | int ret = 0; |
| 1607 | u8 i, j; |
| 1608 | u8 temp = 0; |
| 1609 | |
| 1610 | if (!pdata) { |
| 1611 | pr_err("invalid input\n"); |
| 1612 | return -EINVAL; |
| 1613 | } |
| 1614 | |
| 1615 | memset(pdata->edid_buf, 0, EDID_SEG_SIZE); |
| 1616 | |
| 1617 | lt9611_write(pdata, 0xff, 0x85); |
| 1618 | lt9611_write(pdata, 0x03, 0xc9); |
| 1619 | lt9611_write(pdata, 0x04, 0xa0); /* 0xA0 is EDID device address */ |
| 1620 | lt9611_write(pdata, 0x05, 0x00); /* 0x00 is EDID offset address */ |
| 1621 | lt9611_write(pdata, 0x06, 0x20); /* length for read */ |
| 1622 | lt9611_write(pdata, 0x14, 0x7f); |
| 1623 | |
| 1624 | for (i = 0 ; i < 8 ; i++) { |
| 1625 | lt9611_write(pdata, 0x05, i * 32); /* offset address */ |
| 1626 | lt9611_write(pdata, 0x07, 0x36); |
| 1627 | lt9611_write(pdata, 0x07, 0x31); |
| 1628 | lt9611_write(pdata, 0x07, 0x37); |
| 1629 | usleep_range(5000, 10000); |
| 1630 | |
| 1631 | lt9611_read(pdata, 0x40, &temp, 1); |
| 1632 | |
| 1633 | if (temp & 0x02) { /*KEY_DDC_ACCS_DONE=1*/ |
| 1634 | for (j = 0; j < 32; j++) { |
| 1635 | lt9611_read(pdata, 0x83, |
| 1636 | &(pdata->edid_buf[i*32+j]), 1); |
| 1637 | } |
| 1638 | } else if (temp & 0x50) { /* DDC No Ack or Abitration lost */ |
| 1639 | pr_err("read edid failed: no ack\n"); |
| 1640 | ret = -EIO; |
| 1641 | goto end; |
| 1642 | } else { |
| 1643 | pr_err("read edid failed: access not done\n"); |
| 1644 | ret = -EIO; |
| 1645 | goto end; |
| 1646 | } |
| 1647 | } |
| 1648 | |
| 1649 | pr_debug("read edid succeeded, checksum = 0x%x\n", |
| 1650 | pdata->edid_buf[255]); |
| 1651 | |
| 1652 | end: |
| 1653 | lt9611_write(pdata, 0x07, 0x1f); |
| 1654 | return ret; |
| 1655 | } |
| 1656 | |
| 1657 | /* TODO: add support for more extenstion blocks */ |
| 1658 | static int lt9611_get_edid_block(void *data, u8 *buf, unsigned int block, |
| 1659 | size_t len) |
| 1660 | { |
| 1661 | struct lt9611 *pdata = data; |
| 1662 | int ret = 0; |
| 1663 | |
| 1664 | pr_debug("get edid block: block=%d, len=%d\n", block, (int)len); |
| 1665 | |
| 1666 | if (len > 128) |
| 1667 | return -EINVAL; |
| 1668 | |
| 1669 | /* support up to 1 extension block */ |
| 1670 | if (block > 1) |
| 1671 | return -EINVAL; |
| 1672 | |
| 1673 | if (block == 0) { |
| 1674 | /* always read 2 edid blocks once */ |
| 1675 | ret = lt9611_read_edid(pdata); |
| 1676 | if (ret) { |
| 1677 | pr_err("edid read failed\n"); |
| 1678 | return ret; |
| 1679 | } |
| 1680 | } |
| 1681 | |
| 1682 | if (block % 2 == 0) |
| 1683 | memcpy(buf, pdata->edid_buf, len); |
| 1684 | else |
| 1685 | memcpy(buf, pdata->edid_buf + 128, len); |
| 1686 | |
| 1687 | return 0; |
| 1688 | } |
| 1689 | |
| 1690 | static int lt9611_connector_get_modes(struct drm_connector *connector) |
| 1691 | { |
| 1692 | struct lt9611 *pdata = connector_to_lt9611(connector); |
| 1693 | struct drm_display_mode *mode, *m; |
| 1694 | unsigned int count = 0; |
| 1695 | |
| 1696 | pr_debug("get modes\n"); |
| 1697 | |
| 1698 | if (pdata->non_pluggable) { |
| 1699 | list_for_each_entry(mode, &pdata->mode_list, head) { |
| 1700 | m = drm_mode_duplicate(connector->dev, mode); |
| 1701 | if (!m) { |
| 1702 | pr_err("failed to add hdmi mode %dx%d\n", |
| 1703 | mode->hdisplay, mode->vdisplay); |
| 1704 | break; |
| 1705 | } |
| 1706 | drm_mode_probed_add(connector, m); |
| 1707 | } |
| 1708 | count = pdata->num_of_modes; |
| 1709 | } else { |
| 1710 | struct edid *edid; |
| 1711 | |
| 1712 | if (!pdata->power_on) |
| 1713 | lt9611_power_on(pdata, true); |
| 1714 | edid = drm_do_get_edid(connector, lt9611_get_edid_block, pdata); |
| 1715 | |
| 1716 | drm_mode_connector_update_edid_property(connector, edid); |
| 1717 | count = drm_add_edid_modes(connector, edid); |
| 1718 | |
| 1719 | pdata->hdmi_mode = drm_detect_hdmi_monitor(edid); |
| 1720 | pr_debug("hdmi_mode = %d\n", pdata->hdmi_mode); |
| 1721 | |
| 1722 | /* TODO: this should not be hard coded */ |
| 1723 | drm_set_preferred_mode(connector, 1920, 1080); |
| 1724 | |
| 1725 | kfree(edid); |
| 1726 | } |
| 1727 | |
| 1728 | return count; |
| 1729 | } |
| 1730 | |
| 1731 | static enum drm_mode_status lt9611_connector_mode_valid( |
| 1732 | struct drm_connector *connector, struct drm_display_mode *mode) |
| 1733 | { |
| 1734 | struct lt9611_timing_info *timing = |
| 1735 | lt9611_get_supported_timing(mode); |
| 1736 | |
| 1737 | return timing ? MODE_OK : MODE_BAD; |
| 1738 | } |
| 1739 | |
| 1740 | /* bridge funcs */ |
| 1741 | static void lt9611_bridge_enable(struct drm_bridge *bridge) |
| 1742 | { |
| 1743 | struct lt9611 *pdata = bridge_to_lt9611(bridge); |
| 1744 | |
| 1745 | pr_debug("bridge enable\n"); |
| 1746 | |
| 1747 | if (lt9611_power_on(pdata, true)) { |
| 1748 | pr_err("power on failed\n"); |
| 1749 | return; |
| 1750 | } |
| 1751 | |
| 1752 | if (lt9611_video_on(pdata, true)) { |
| 1753 | pr_err("video on failed\n"); |
| 1754 | return; |
| 1755 | } |
| 1756 | } |
| 1757 | |
| 1758 | static void lt9611_bridge_disable(struct drm_bridge *bridge) |
| 1759 | { |
| 1760 | struct lt9611 *pdata = bridge_to_lt9611(bridge); |
| 1761 | |
| 1762 | pr_debug("bridge disable\n"); |
| 1763 | |
| 1764 | if (lt9611_video_on(pdata, false)) { |
| 1765 | pr_err("video on failed\n"); |
| 1766 | return; |
| 1767 | } |
| 1768 | |
| 1769 | if (lt9611_power_on(pdata, false)) { |
| 1770 | pr_err("power on failed\n"); |
| 1771 | return; |
| 1772 | } |
| 1773 | } |
| 1774 | |
| 1775 | static void lt9611_bridge_mode_set(struct drm_bridge *bridge, |
| 1776 | struct drm_display_mode *mode, |
| 1777 | struct drm_display_mode *adj_mode) |
| 1778 | { |
| 1779 | struct lt9611 *pdata = bridge_to_lt9611(bridge); |
| 1780 | struct lt9611_video_cfg *video_cfg = &pdata->video_cfg; |
| 1781 | int ret = 0; |
| 1782 | |
| 1783 | pr_debug("bridge mode_set: hdisplay=%d, vdisplay=%d, vrefresh=%d, clock=%d\n", |
| 1784 | adj_mode->hdisplay, adj_mode->vdisplay, |
| 1785 | adj_mode->vrefresh, adj_mode->clock); |
| 1786 | |
| 1787 | drm_mode_copy(&pdata->curr_mode, adj_mode); |
| 1788 | |
| 1789 | memset(video_cfg, 0, sizeof(struct lt9611_video_cfg)); |
| 1790 | lt9611_get_video_cfg(pdata, adj_mode, video_cfg); |
| 1791 | |
| 1792 | /* TODO: update intf number of host */ |
| 1793 | if (video_cfg->num_of_lanes != pdata->dsi->lanes) { |
| 1794 | mipi_dsi_detach(pdata->dsi); |
| 1795 | pdata->dsi->lanes = video_cfg->num_of_lanes; |
| 1796 | ret = mipi_dsi_attach(pdata->dsi); |
| 1797 | if (ret) |
| 1798 | pr_err("failed to change host lanes\n"); |
| 1799 | } |
| 1800 | } |
| 1801 | |
| 1802 | static int lt9611_bridge_attach(struct drm_bridge *bridge) |
| 1803 | { |
| 1804 | struct mipi_dsi_host *host; |
| 1805 | struct mipi_dsi_device *dsi; |
| 1806 | struct lt9611 *pdata = bridge_to_lt9611(bridge); |
| 1807 | int ret; |
| 1808 | const struct mipi_dsi_device_info info = { .type = "lt9611", |
| 1809 | .channel = 0, |
| 1810 | .node = NULL, |
| 1811 | }; |
| 1812 | |
| 1813 | pr_debug("bridge attach\n"); |
| 1814 | |
| 1815 | if (!bridge->encoder) { |
| 1816 | DRM_ERROR("Parent encoder object not found"); |
| 1817 | return -ENODEV; |
| 1818 | } |
| 1819 | |
| 1820 | host = of_find_mipi_dsi_host_by_node(pdata->host_node); |
| 1821 | if (!host) { |
| 1822 | pr_err("failed to find dsi host\n"); |
| 1823 | return -EPROBE_DEFER; |
| 1824 | } |
| 1825 | |
| 1826 | dsi = mipi_dsi_device_register_full(host, &info); |
| 1827 | if (IS_ERR(dsi)) { |
| 1828 | pr_err("failed to create dsi device\n"); |
| 1829 | ret = PTR_ERR(dsi); |
| 1830 | goto err_dsi_device; |
| 1831 | } |
| 1832 | |
| 1833 | dsi->lanes = 4; |
| 1834 | dsi->format = MIPI_DSI_FMT_RGB888; |
| 1835 | dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE | |
| 1836 | MIPI_DSI_MODE_VIDEO_HSE | MIPI_DSI_MODE_VIDEO_BLLP | |
| 1837 | MIPI_DSI_MODE_VIDEO_EOF_BLLP; |
| 1838 | |
| 1839 | ret = mipi_dsi_attach(dsi); |
| 1840 | if (ret < 0) { |
| 1841 | pr_err("failed to attach dsi to host\n"); |
| 1842 | goto err_dsi_attach; |
| 1843 | } |
| 1844 | |
| 1845 | pdata->dsi = dsi; |
| 1846 | |
| 1847 | return 0; |
| 1848 | |
| 1849 | err_dsi_attach: |
| 1850 | mipi_dsi_device_unregister(dsi); |
| 1851 | err_dsi_device: |
| 1852 | return ret; |
| 1853 | } |
| 1854 | |
| 1855 | static void lt9611_bridge_pre_enable(struct drm_bridge *bridge) |
| 1856 | { |
| 1857 | struct lt9611 *pdata = bridge_to_lt9611(bridge); |
| 1858 | |
| 1859 | pr_debug("bridge pre_enable\n"); |
| 1860 | |
| 1861 | lt9611_reset(pdata); |
| 1862 | |
| 1863 | lt9611_write(pdata, 0xff, 0x80); |
| 1864 | lt9611_write(pdata, 0xee, 0x01); |
| 1865 | } |
| 1866 | |
| 1867 | static bool lt9611_bridge_mode_fixup(struct drm_bridge *bridge, |
| 1868 | const struct drm_display_mode *mode, |
| 1869 | struct drm_display_mode *adjusted_mode) |
| 1870 | { |
| 1871 | pr_debug("bridge mode_fixup\n"); |
| 1872 | |
| 1873 | return true; |
| 1874 | } |
| 1875 | |
| 1876 | static void lt9611_bridge_post_disable(struct drm_bridge *bridge) |
| 1877 | { |
| 1878 | struct lt9611 *pdata = bridge_to_lt9611(bridge); |
| 1879 | |
| 1880 | pr_debug("bridge post_disable\n"); |
| 1881 | |
| 1882 | lt9611_sleep_setup(pdata); |
| 1883 | } |
| 1884 | |
| 1885 | static struct drm_connector_funcs override_funcs; |
| 1886 | static struct drm_connector_helper_funcs override_helper_private; |
| 1887 | |
| 1888 | static int lt9611_bridge_connector_init(struct drm_bridge *bridge, |
| 1889 | struct drm_connector *connector) |
| 1890 | { |
| 1891 | pr_debug("bridge connector_init\n"); |
| 1892 | |
| 1893 | if (connector->encoder != bridge->encoder) { |
| 1894 | pr_err("bridge and connector need attach to the same encoder\n"); |
| 1895 | return -EINVAL; |
| 1896 | } |
| 1897 | |
| 1898 | connector->private = bridge; |
| 1899 | |
| 1900 | /* |
| 1901 | * Make a copy of drm_connector_funcs and drm_connector_helper_funcs. To |
| 1902 | * make sure other KMS components won't be broken. For example, if other |
| 1903 | * connectors share the implementation for ->funs, overwriting this will |
| 1904 | * break other connectors. |
| 1905 | */ |
| 1906 | override_funcs = *connector->funcs; |
| 1907 | override_funcs.detect = lt9611_connector_detect; |
| 1908 | connector->funcs = &override_funcs; |
| 1909 | |
| 1910 | override_helper_private = *connector->helper_private; |
| 1911 | override_helper_private.get_modes = lt9611_connector_get_modes; |
| 1912 | override_helper_private.mode_valid = lt9611_connector_mode_valid; |
| 1913 | connector->helper_private = &override_helper_private; |
| 1914 | |
| 1915 | return 0; |
| 1916 | } |
| 1917 | |
| 1918 | static const struct drm_bridge_funcs lt9611_bridge_funcs = { |
| 1919 | .attach = lt9611_bridge_attach, |
| 1920 | .mode_fixup = lt9611_bridge_mode_fixup, |
| 1921 | .pre_enable = lt9611_bridge_pre_enable, |
| 1922 | .enable = lt9611_bridge_enable, |
| 1923 | .disable = lt9611_bridge_disable, |
| 1924 | .post_disable = lt9611_bridge_post_disable, |
| 1925 | .mode_set = lt9611_bridge_mode_set, |
| 1926 | .connector_init = lt9611_bridge_connector_init, |
| 1927 | }; |
| 1928 | |
| 1929 | /* sysfs */ |
| 1930 | static int lt9611_dump_debug_info(struct lt9611 *pdata) |
| 1931 | { |
| 1932 | if (!pdata->power_on) { |
| 1933 | pr_err("device is not power on\n"); |
| 1934 | return -EINVAL; |
| 1935 | } |
| 1936 | |
| 1937 | lt9611_video_check(pdata); |
| 1938 | |
| 1939 | lt9611_pcr_mk_debug(pdata); |
| 1940 | |
| 1941 | lt9611_mipi_byte_clk_debug(pdata); |
| 1942 | |
| 1943 | return 0; |
| 1944 | } |
| 1945 | |
| 1946 | static ssize_t lt9611_dump_info_wta_attr(struct device *dev, |
| 1947 | struct device_attribute *attr, |
| 1948 | const char *buf, |
| 1949 | size_t count) |
| 1950 | { |
| 1951 | struct lt9611 *pdata = dev_get_drvdata(dev); |
| 1952 | |
| 1953 | if (!pdata) { |
| 1954 | pr_err("pdata is NULL\n"); |
| 1955 | return -EINVAL; |
| 1956 | } |
| 1957 | |
| 1958 | lt9611_dump_debug_info(pdata); |
| 1959 | |
| 1960 | return count; |
| 1961 | } |
| 1962 | |
| 1963 | static DEVICE_ATTR(dump_info, 0200, NULL, lt9611_dump_info_wta_attr); |
| 1964 | |
| 1965 | static struct attribute *lt9611_sysfs_attrs[] = { |
| 1966 | &dev_attr_dump_info.attr, |
| 1967 | NULL, |
| 1968 | }; |
| 1969 | |
| 1970 | static struct attribute_group lt9611_sysfs_attr_grp = { |
| 1971 | .attrs = lt9611_sysfs_attrs, |
| 1972 | }; |
| 1973 | |
| 1974 | static int lt9611_sysfs_init(struct device *dev) |
| 1975 | { |
| 1976 | int rc = 0; |
| 1977 | |
| 1978 | if (!dev) { |
| 1979 | pr_err("%s: Invalid params\n", __func__); |
| 1980 | return -EINVAL; |
| 1981 | } |
| 1982 | |
| 1983 | rc = sysfs_create_group(&dev->kobj, <9611_sysfs_attr_grp); |
| 1984 | if (rc) |
| 1985 | pr_err("%s: sysfs group creation failed %d\n", __func__, rc); |
| 1986 | |
| 1987 | return rc; |
| 1988 | } |
| 1989 | |
| 1990 | static void lt9611_sysfs_remove(struct device *dev) |
| 1991 | { |
| 1992 | if (!dev) { |
| 1993 | pr_err("%s: Invalid params\n", __func__); |
| 1994 | return; |
| 1995 | } |
| 1996 | |
| 1997 | sysfs_remove_group(&dev->kobj, <9611_sysfs_attr_grp); |
| 1998 | } |
| 1999 | |
| 2000 | static int lt9611_probe(struct i2c_client *client, |
| 2001 | const struct i2c_device_id *id) |
| 2002 | { |
| 2003 | struct lt9611 *pdata; |
| 2004 | int ret = 0; |
| 2005 | |
| 2006 | if (!client || !client->dev.of_node) { |
| 2007 | pr_err("invalid input\n"); |
| 2008 | return -EINVAL; |
| 2009 | } |
| 2010 | |
| 2011 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { |
| 2012 | pr_err("device doesn't support I2C\n"); |
| 2013 | return -ENODEV; |
| 2014 | } |
| 2015 | |
| 2016 | pdata = devm_kzalloc(&client->dev, |
| 2017 | sizeof(struct lt9611), GFP_KERNEL); |
| 2018 | if (!pdata) |
| 2019 | return -ENOMEM; |
| 2020 | |
| 2021 | ret = lt9611_parse_dt(&client->dev, pdata); |
| 2022 | if (ret) { |
| 2023 | pr_err("failed to parse device tree\n"); |
| 2024 | goto err_dt_parse; |
| 2025 | } |
| 2026 | |
| 2027 | ret = lt9611_get_dt_supply(&client->dev, pdata); |
| 2028 | if (ret) { |
| 2029 | pr_err("failed to get dt supply\n"); |
| 2030 | goto err_dt_parse; |
| 2031 | } |
| 2032 | |
| 2033 | pdata->dev = &client->dev; |
| 2034 | pdata->i2c_client = client; |
| 2035 | pr_debug("I2C address is %x\n", client->addr); |
| 2036 | |
| 2037 | ret = lt9611_gpio_configure(pdata, true); |
| 2038 | if (ret) { |
| 2039 | pr_err("failed to configure GPIOs\n"); |
| 2040 | goto err_dt_supply; |
| 2041 | } |
| 2042 | |
| 2043 | lt9611_assert_5v(pdata); |
| 2044 | |
| 2045 | ret = lt9611_enable_vreg(pdata, true); |
| 2046 | if (ret) { |
| 2047 | pr_err("failed to enable vreg\n"); |
| 2048 | goto err_dt_supply; |
| 2049 | } |
| 2050 | |
| 2051 | lt9611_reset(pdata); |
| 2052 | |
| 2053 | ret = lt9611_read_device_rev(pdata); |
| 2054 | if (ret) { |
| 2055 | pr_err("failed to read chip rev\n"); |
| 2056 | goto err_i2c_prog; |
| 2057 | } |
| 2058 | |
| 2059 | pdata->irq = gpio_to_irq(pdata->irq_gpio); |
| 2060 | ret = request_threaded_irq(pdata->irq, NULL, lt9611_irq_thread_handler, |
| 2061 | IRQF_TRIGGER_FALLING | IRQF_ONESHOT, "lt9611", pdata); |
| 2062 | if (ret) { |
| 2063 | pr_err("failed to request irq\n"); |
| 2064 | goto err_i2c_prog; |
| 2065 | } |
| 2066 | |
| 2067 | i2c_set_clientdata(client, pdata); |
| 2068 | dev_set_drvdata(&client->dev, pdata); |
| 2069 | |
| 2070 | ret = lt9611_sysfs_init(&client->dev); |
| 2071 | if (ret) { |
| 2072 | pr_err("sysfs init failed\n"); |
| 2073 | goto err_sysfs_init; |
| 2074 | } |
| 2075 | |
| 2076 | pdata->bridge.funcs = <9611_bridge_funcs; |
| 2077 | pdata->bridge.of_node = client->dev.of_node; |
| 2078 | |
| 2079 | drm_bridge_add(&pdata->bridge); |
| 2080 | |
| 2081 | return ret; |
| 2082 | |
| 2083 | err_sysfs_init: |
| 2084 | disable_irq(pdata->irq); |
| 2085 | free_irq(pdata->irq, pdata); |
| 2086 | err_i2c_prog: |
| 2087 | lt9611_gpio_configure(pdata, false); |
| 2088 | err_dt_supply: |
| 2089 | lt9611_put_dt_supply(&client->dev, pdata); |
| 2090 | err_dt_parse: |
| 2091 | devm_kfree(&client->dev, pdata); |
| 2092 | return ret; |
| 2093 | } |
| 2094 | |
| 2095 | static int lt9611_remove(struct i2c_client *client) |
| 2096 | { |
| 2097 | int ret = -EINVAL; |
| 2098 | struct lt9611 *pdata = i2c_get_clientdata(client); |
| 2099 | struct drm_display_mode *mode, *n; |
| 2100 | |
| 2101 | if (!pdata) |
| 2102 | goto end; |
| 2103 | |
| 2104 | mipi_dsi_detach(pdata->dsi); |
| 2105 | mipi_dsi_device_unregister(pdata->dsi); |
| 2106 | |
| 2107 | drm_bridge_remove(&pdata->bridge); |
| 2108 | |
| 2109 | lt9611_sysfs_remove(&client->dev); |
| 2110 | |
| 2111 | disable_irq(pdata->irq); |
| 2112 | free_irq(pdata->irq, pdata); |
| 2113 | |
| 2114 | ret = lt9611_gpio_configure(pdata, false); |
| 2115 | |
| 2116 | lt9611_put_dt_supply(&client->dev, pdata); |
| 2117 | |
| 2118 | if (pdata->non_pluggable) { |
| 2119 | list_for_each_entry_safe(mode, n, &pdata->mode_list, head) { |
| 2120 | list_del(&mode->head); |
| 2121 | kfree(mode); |
| 2122 | } |
| 2123 | } |
| 2124 | |
| 2125 | devm_kfree(&client->dev, pdata); |
| 2126 | |
| 2127 | end: |
| 2128 | return ret; |
| 2129 | } |
| 2130 | |
| 2131 | |
| 2132 | static struct i2c_device_id lt9611_id[] = { |
| 2133 | { "lt,lt9611", 0}, |
| 2134 | {} |
| 2135 | }; |
| 2136 | |
| 2137 | static const struct of_device_id lt9611_match_table[] = { |
| 2138 | {.compatible = "lt,lt9611"}, |
| 2139 | {} |
| 2140 | }; |
| 2141 | MODULE_DEVICE_TABLE(of, lt9611_match_table); |
| 2142 | |
| 2143 | static struct i2c_driver lt9611_driver = { |
| 2144 | .driver = { |
| 2145 | .name = "lt9611", |
| 2146 | .owner = THIS_MODULE, |
| 2147 | .of_match_table = lt9611_match_table, |
| 2148 | }, |
| 2149 | .probe = lt9611_probe, |
| 2150 | .remove = lt9611_remove, |
| 2151 | .id_table = lt9611_id, |
| 2152 | }; |
| 2153 | |
| 2154 | static int __init lt9611_init(void) |
| 2155 | { |
| 2156 | return i2c_add_driver(<9611_driver); |
| 2157 | } |
| 2158 | |
| 2159 | static void __exit lt9611_exit(void) |
| 2160 | { |
| 2161 | i2c_del_driver(<9611_driver); |
| 2162 | } |
| 2163 | |
| 2164 | module_init(lt9611_init); |
| 2165 | module_exit(lt9611_exit); |
| 2166 | |