Raghavendra Ambadas | 70867fe | 2020-03-19 13:24:54 +0530 | [diff] [blame] | 1 | /* Copyright (c) 2017-2018, 2020, The Linux Foundation. All rights reserved. |
Arun kumar | db96281 | 2018-05-30 16:31:52 +0530 | [diff] [blame] | 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 | #include <linux/module.h> |
| 14 | #include <linux/of_gpio.h> |
| 15 | #include <linux/gpio.h> |
| 16 | #include <linux/qpnp/pin.h> |
| 17 | #include <linux/delay.h> |
| 18 | #include <linux/interrupt.h> |
| 19 | #include <linux/leds.h> |
| 20 | #include <linux/qpnp/pwm.h> |
| 21 | #include <linux/of_device.h> |
| 22 | |
| 23 | #include "mdss.h" |
| 24 | #include "mdss_panel.h" |
| 25 | #include "mdss_spi_panel.h" |
| 26 | #include "mdss_spi_client.h" |
| 27 | #include "mdp3.h" |
| 28 | |
| 29 | DEFINE_LED_TRIGGER(bl_led_trigger); |
| 30 | static int mdss_spi_panel_reset(struct mdss_panel_data *pdata, int enable) |
| 31 | { |
| 32 | struct spi_panel_data *ctrl_pdata = NULL; |
| 33 | struct mdss_panel_info *pinfo = NULL; |
| 34 | int i, rc = 0; |
| 35 | |
| 36 | if (pdata == NULL) { |
| 37 | pr_err("%s: Invalid input data\n", __func__); |
| 38 | return -EINVAL; |
| 39 | } |
| 40 | |
| 41 | ctrl_pdata = container_of(pdata, struct spi_panel_data, |
| 42 | panel_data); |
| 43 | |
| 44 | if (!gpio_is_valid(ctrl_pdata->rst_gpio)) { |
| 45 | pr_debug("%s:%d, reset line not configured\n", |
| 46 | __func__, __LINE__); |
| 47 | return rc; |
| 48 | } |
| 49 | |
| 50 | if (!gpio_is_valid(ctrl_pdata->disp_dc_gpio)) { |
| 51 | pr_debug("%s:%d, dc line not configured\n", |
| 52 | __func__, __LINE__); |
| 53 | return rc; |
| 54 | } |
| 55 | |
| 56 | pr_debug("%s: enable = %d\n", __func__, enable); |
| 57 | pinfo = &(ctrl_pdata->panel_data.panel_info); |
| 58 | |
| 59 | if (enable) { |
| 60 | rc = gpio_request(ctrl_pdata->rst_gpio, "disp_rst_n"); |
| 61 | if (rc) { |
| 62 | pr_err("display reset gpio request failed\n"); |
| 63 | return rc; |
| 64 | } |
| 65 | |
| 66 | rc = gpio_request(ctrl_pdata->disp_dc_gpio, "disp_dc"); |
| 67 | if (rc) { |
| 68 | pr_err("display dc gpio request failed\n"); |
| 69 | return rc; |
| 70 | } |
| 71 | |
| 72 | if (!pinfo->cont_splash_enabled) { |
| 73 | for (i = 0; i < pdata->panel_info.rst_seq_len; ++i) { |
| 74 | gpio_direction_output((ctrl_pdata->rst_gpio), |
| 75 | pdata->panel_info.rst_seq[i]); |
| 76 | if (pdata->panel_info.rst_seq[++i]) |
| 77 | usleep_range(pinfo->rst_seq[i] * 1000, |
| 78 | pinfo->rst_seq[i] * 1000); |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | if (ctrl_pdata->ctrl_state & CTRL_STATE_PANEL_INIT) { |
| 83 | pr_debug("%s: Panel Not properly turned OFF\n", |
| 84 | __func__); |
| 85 | ctrl_pdata->ctrl_state &= ~CTRL_STATE_PANEL_INIT; |
| 86 | pr_err("%s: Reset panel done\n", __func__); |
| 87 | } |
| 88 | } else { |
| 89 | gpio_direction_output((ctrl_pdata->rst_gpio), 0); |
| 90 | gpio_free(ctrl_pdata->rst_gpio); |
| 91 | |
| 92 | gpio_direction_output(ctrl_pdata->disp_dc_gpio, 0); |
| 93 | gpio_free(ctrl_pdata->disp_dc_gpio); |
| 94 | } |
| 95 | return rc; |
| 96 | } |
| 97 | |
| 98 | |
| 99 | static int mdss_spi_panel_pinctrl_set_state( |
| 100 | struct spi_panel_data *ctrl_pdata, |
| 101 | bool active) |
| 102 | { |
| 103 | struct pinctrl_state *pin_state; |
| 104 | int rc = -EFAULT; |
| 105 | |
| 106 | if (IS_ERR_OR_NULL(ctrl_pdata->pin_res.pinctrl)) |
| 107 | return PTR_ERR(ctrl_pdata->pin_res.pinctrl); |
| 108 | |
| 109 | pin_state = active ? ctrl_pdata->pin_res.gpio_state_active |
| 110 | : ctrl_pdata->pin_res.gpio_state_suspend; |
| 111 | if (!IS_ERR_OR_NULL(pin_state)) { |
| 112 | rc = pinctrl_select_state(ctrl_pdata->pin_res.pinctrl, |
| 113 | pin_state); |
| 114 | if (rc) |
| 115 | pr_err("%s: can not set %s pins\n", __func__, |
| 116 | active ? MDSS_PINCTRL_STATE_DEFAULT |
| 117 | : MDSS_PINCTRL_STATE_SLEEP); |
| 118 | } else { |
| 119 | pr_err("%s: invalid '%s' pinstate\n", __func__, |
| 120 | active ? MDSS_PINCTRL_STATE_DEFAULT |
| 121 | : MDSS_PINCTRL_STATE_SLEEP); |
| 122 | } |
| 123 | return rc; |
| 124 | } |
| 125 | |
| 126 | |
| 127 | static int mdss_spi_panel_pinctrl_init(struct platform_device *pdev) |
| 128 | { |
| 129 | struct spi_panel_data *ctrl_pdata; |
| 130 | |
| 131 | ctrl_pdata = platform_get_drvdata(pdev); |
| 132 | ctrl_pdata->pin_res.pinctrl = devm_pinctrl_get(&pdev->dev); |
| 133 | if (IS_ERR_OR_NULL(ctrl_pdata->pin_res.pinctrl)) { |
| 134 | pr_err("%s: failed to get pinctrl\n", __func__); |
| 135 | return PTR_ERR(ctrl_pdata->pin_res.pinctrl); |
| 136 | } |
| 137 | |
| 138 | ctrl_pdata->pin_res.gpio_state_active |
| 139 | = pinctrl_lookup_state(ctrl_pdata->pin_res.pinctrl, |
| 140 | MDSS_PINCTRL_STATE_DEFAULT); |
| 141 | if (IS_ERR_OR_NULL(ctrl_pdata->pin_res.gpio_state_active)) |
| 142 | pr_warn("%s: can not get default pinstate\n", __func__); |
| 143 | |
| 144 | ctrl_pdata->pin_res.gpio_state_suspend |
| 145 | = pinctrl_lookup_state(ctrl_pdata->pin_res.pinctrl, |
| 146 | MDSS_PINCTRL_STATE_SLEEP); |
| 147 | if (IS_ERR_OR_NULL(ctrl_pdata->pin_res.gpio_state_suspend)) |
| 148 | pr_warn("%s: can not get sleep pinstate\n", __func__); |
| 149 | |
| 150 | return 0; |
| 151 | } |
| 152 | |
| 153 | |
| 154 | static int mdss_spi_panel_power_on(struct mdss_panel_data *pdata) |
| 155 | { |
| 156 | int ret = 0; |
| 157 | struct spi_panel_data *ctrl_pdata = NULL; |
| 158 | |
| 159 | if (pdata == NULL) { |
| 160 | pr_err("%s: Invalid input data\n", __func__); |
| 161 | return -EINVAL; |
| 162 | } |
| 163 | |
| 164 | ctrl_pdata = container_of(pdata, struct spi_panel_data, |
| 165 | panel_data); |
Krishna Manikandan | 695632e | 2020-03-04 20:50:28 +0530 | [diff] [blame] | 166 | if (!mdp3_res->secure_reg_on) { |
| 167 | ret = msm_mdss_enable_vreg( |
| 168 | ctrl_pdata->panel_power_data.vreg_config, |
| 169 | ctrl_pdata->panel_power_data.num_vreg, 1); |
| 170 | if (ret) { |
| 171 | pr_err("%s: failed to enable vregs for %s\n", |
| 172 | __func__, "PANEL_PM"); |
| 173 | } |
Arun kumar | db96281 | 2018-05-30 16:31:52 +0530 | [diff] [blame] | 174 | } |
| 175 | |
| 176 | /* |
| 177 | * If continuous splash screen feature is enabled, then we need to |
| 178 | * request all the GPIOs that have already been configured in the |
| 179 | * bootloader. This needs to be done irresepective of whether |
| 180 | * the lp11_init flag is set or not. |
| 181 | */ |
| 182 | if (pdata->panel_info.cont_splash_enabled) { |
| 183 | if (mdss_spi_panel_pinctrl_set_state(ctrl_pdata, true)) |
| 184 | pr_debug("reset enable: pinctrl not enabled\n"); |
| 185 | |
| 186 | ret = mdss_spi_panel_reset(pdata, 1); |
| 187 | if (ret) |
| 188 | pr_err("%s: Panel reset failed. rc=%d\n", |
| 189 | __func__, ret); |
| 190 | } |
| 191 | |
| 192 | return ret; |
| 193 | } |
| 194 | |
| 195 | |
| 196 | static int mdss_spi_panel_power_off(struct mdss_panel_data *pdata) |
| 197 | { |
| 198 | int ret = 0; |
| 199 | struct spi_panel_data *ctrl_pdata = NULL; |
| 200 | |
| 201 | if (pdata == NULL) { |
| 202 | pr_err("%s: Invalid input data\n", __func__); |
| 203 | ret = -EINVAL; |
| 204 | goto end; |
| 205 | } |
| 206 | ctrl_pdata = container_of(pdata, struct spi_panel_data, |
| 207 | panel_data); |
| 208 | |
| 209 | ret = mdss_spi_panel_reset(pdata, 0); |
| 210 | if (ret) { |
| 211 | pr_warn("%s: Panel reset failed. rc=%d\n", __func__, ret); |
| 212 | ret = 0; |
| 213 | } |
| 214 | |
| 215 | if (mdss_spi_panel_pinctrl_set_state(ctrl_pdata, false)) |
| 216 | pr_warn("reset disable: pinctrl not enabled\n"); |
| 217 | |
Krishna Manikandan | 695632e | 2020-03-04 20:50:28 +0530 | [diff] [blame] | 218 | if (!mdp3_res->secure_reg_on) { |
| 219 | ret = msm_mdss_enable_vreg( |
| 220 | ctrl_pdata->panel_power_data.vreg_config, |
| 221 | ctrl_pdata->panel_power_data.num_vreg, 0); |
| 222 | if (ret) |
| 223 | pr_err("%s: failed to disable vregs for %s\n", |
| 224 | __func__, "PANEL_PM"); |
| 225 | } |
Arun kumar | db96281 | 2018-05-30 16:31:52 +0530 | [diff] [blame] | 226 | |
| 227 | end: |
| 228 | return ret; |
| 229 | } |
| 230 | |
| 231 | |
| 232 | static int mdss_spi_panel_power_ctrl(struct mdss_panel_data *pdata, |
| 233 | int power_state) |
| 234 | { |
| 235 | int ret; |
| 236 | struct mdss_panel_info *pinfo; |
| 237 | |
| 238 | if (pdata == NULL) { |
| 239 | pr_err("%s: Invalid input data\n", __func__); |
| 240 | return -EINVAL; |
| 241 | } |
| 242 | |
| 243 | pinfo = &pdata->panel_info; |
| 244 | pr_debug("%s: cur_power_state=%d req_power_state=%d\n", __func__, |
| 245 | pinfo->panel_power_state, power_state); |
| 246 | |
| 247 | if (pinfo->panel_power_state == power_state) { |
| 248 | pr_debug("%s: no change needed\n", __func__); |
| 249 | return 0; |
| 250 | } |
| 251 | |
| 252 | switch (power_state) { |
| 253 | case MDSS_PANEL_POWER_OFF: |
| 254 | ret = mdss_spi_panel_power_off(pdata); |
| 255 | break; |
| 256 | case MDSS_PANEL_POWER_ON: |
| 257 | ret = mdss_spi_panel_power_on(pdata); |
| 258 | break; |
| 259 | default: |
| 260 | pr_err("%s: unknown panel power state requested (%d)\n", |
| 261 | __func__, power_state); |
| 262 | ret = -EINVAL; |
| 263 | } |
| 264 | |
| 265 | if (!ret) |
| 266 | pinfo->panel_power_state = power_state; |
| 267 | |
| 268 | return ret; |
| 269 | } |
| 270 | |
| 271 | static int mdss_spi_panel_unblank(struct mdss_panel_data *pdata) |
| 272 | { |
| 273 | int ret = 0; |
| 274 | struct spi_panel_data *ctrl_pdata = NULL; |
| 275 | |
| 276 | if (pdata == NULL) { |
| 277 | pr_err("%s: Invalid input data\n", __func__); |
| 278 | return -EINVAL; |
| 279 | } |
| 280 | |
| 281 | ctrl_pdata = container_of(pdata, struct spi_panel_data, |
| 282 | panel_data); |
| 283 | |
| 284 | if (!(ctrl_pdata->ctrl_state & CTRL_STATE_PANEL_INIT)) { |
| 285 | ret = ctrl_pdata->on(pdata); |
| 286 | if (ret) { |
| 287 | pr_err("%s: unable to initialize the panel\n", |
| 288 | __func__); |
| 289 | return ret; |
| 290 | } |
| 291 | ctrl_pdata->ctrl_state |= CTRL_STATE_PANEL_INIT; |
| 292 | } |
| 293 | |
| 294 | return ret; |
| 295 | } |
| 296 | |
| 297 | static int mdss_spi_panel_blank(struct mdss_panel_data *pdata, int power_state) |
| 298 | { |
| 299 | int ret = 0; |
| 300 | struct spi_panel_data *ctrl_pdata = NULL; |
| 301 | |
| 302 | if (pdata == NULL) { |
| 303 | pr_err("%s: Invalid input data\n", __func__); |
| 304 | return -EINVAL; |
| 305 | } |
| 306 | |
| 307 | ctrl_pdata = container_of(pdata, struct spi_panel_data, |
| 308 | panel_data); |
| 309 | |
| 310 | if (ctrl_pdata->ctrl_state & CTRL_STATE_PANEL_INIT) { |
| 311 | ret = ctrl_pdata->off(pdata); |
| 312 | if (ret) { |
| 313 | pr_err("%s: Panel OFF failed\n", __func__); |
| 314 | return ret; |
| 315 | } |
| 316 | ctrl_pdata->ctrl_state &= ~CTRL_STATE_PANEL_INIT; |
| 317 | } |
| 318 | |
| 319 | return ret; |
| 320 | } |
| 321 | |
| 322 | |
| 323 | static int mdss_spi_panel_event_handler(struct mdss_panel_data *pdata, |
| 324 | int event, void *arg) |
| 325 | { |
| 326 | int rc = 0; |
| 327 | struct spi_panel_data *ctrl_pdata = NULL; |
| 328 | int power_state; |
| 329 | |
| 330 | if (pdata == NULL) { |
| 331 | pr_err("%s: Invalid input data\n", __func__); |
| 332 | return -EINVAL; |
| 333 | } |
| 334 | ctrl_pdata = container_of(pdata, struct spi_panel_data, |
| 335 | panel_data); |
| 336 | |
| 337 | switch (event) { |
| 338 | case MDSS_EVENT_LINK_READY: |
| 339 | rc = mdss_spi_panel_power_ctrl(pdata, MDSS_PANEL_POWER_ON); |
| 340 | if (rc) { |
| 341 | pr_err("%s:Panel power on failed. rc=%d\n", |
| 342 | __func__, rc); |
| 343 | return rc; |
| 344 | } |
| 345 | mdss_spi_panel_pinctrl_set_state(ctrl_pdata, true); |
| 346 | mdss_spi_panel_reset(pdata, 1); |
| 347 | break; |
| 348 | case MDSS_EVENT_UNBLANK: |
| 349 | rc = mdss_spi_panel_unblank(pdata); |
| 350 | break; |
| 351 | case MDSS_EVENT_PANEL_ON: |
| 352 | ctrl_pdata->ctrl_state |= CTRL_STATE_MDP_ACTIVE; |
| 353 | break; |
| 354 | case MDSS_EVENT_BLANK: |
| 355 | power_state = (int) (unsigned long) arg; |
| 356 | break; |
| 357 | case MDSS_EVENT_PANEL_OFF: |
| 358 | power_state = (int) (unsigned long) arg; |
| 359 | ctrl_pdata->ctrl_state &= ~CTRL_STATE_MDP_ACTIVE; |
| 360 | rc = mdss_spi_panel_blank(pdata, power_state); |
| 361 | rc = mdss_spi_panel_power_ctrl(pdata, power_state); |
| 362 | break; |
| 363 | default: |
| 364 | pr_debug("%s: unhandled event=%d\n", __func__, event); |
| 365 | break; |
| 366 | } |
| 367 | pr_debug("%s-:event=%d, rc=%d\n", __func__, event, rc); |
| 368 | return rc; |
| 369 | } |
| 370 | |
| 371 | int is_spi_panel_continuous_splash_on(struct mdss_panel_data *pdata) |
| 372 | { |
| 373 | int i = 0, voltage = 0; |
| 374 | struct mdss_vreg *vreg; |
| 375 | int num_vreg; |
| 376 | struct spi_panel_data *ctrl_pdata = NULL; |
| 377 | |
| 378 | ctrl_pdata = container_of(pdata, struct spi_panel_data, |
| 379 | panel_data); |
| 380 | vreg = ctrl_pdata->panel_power_data.vreg_config; |
| 381 | num_vreg = ctrl_pdata->panel_power_data.num_vreg; |
| 382 | |
| 383 | for (i = 0; i < num_vreg; i++) { |
| 384 | if (regulator_is_enabled(vreg[i].vreg) <= 0) |
| 385 | return false; |
| 386 | voltage = regulator_get_voltage(vreg[i].vreg); |
| 387 | if (!(voltage >= vreg[i].min_voltage && |
| 388 | voltage <= vreg[i].max_voltage)) |
| 389 | return false; |
| 390 | } |
| 391 | |
| 392 | return true; |
| 393 | } |
| 394 | |
| 395 | static void enable_spi_panel_te_irq(struct spi_panel_data *ctrl_pdata, |
| 396 | bool enable) |
| 397 | { |
| 398 | static bool is_enabled = true; |
| 399 | |
| 400 | if (is_enabled == enable) |
| 401 | return; |
| 402 | |
| 403 | if (!gpio_is_valid(ctrl_pdata->disp_te_gpio)) { |
| 404 | pr_err("%s:%d,SPI panel TE GPIO not configured\n", |
| 405 | __func__, __LINE__); |
| 406 | return; |
| 407 | } |
| 408 | |
| 409 | if (enable) |
| 410 | enable_irq(gpio_to_irq(ctrl_pdata->disp_te_gpio)); |
| 411 | else |
| 412 | disable_irq(gpio_to_irq(ctrl_pdata->disp_te_gpio)); |
| 413 | |
| 414 | is_enabled = enable; |
| 415 | } |
| 416 | |
| 417 | int mdss_spi_panel_kickoff(struct mdss_panel_data *pdata, |
| 418 | char *buf, int len, int dma_stride) |
| 419 | { |
| 420 | struct spi_panel_data *ctrl_pdata = NULL; |
| 421 | char *tx_buf; |
| 422 | int rc = 0; |
| 423 | int panel_yres; |
| 424 | int panel_xres; |
| 425 | int padding_length = 0; |
| 426 | int actual_stride = 0; |
| 427 | int byte_per_pixel = 0; |
| 428 | int scan_count = 0; |
| 429 | |
| 430 | if (pdata == NULL) { |
| 431 | pr_err("%s: Invalid input data\n", __func__); |
| 432 | return -EINVAL; |
| 433 | } |
| 434 | |
| 435 | ctrl_pdata = container_of(pdata, struct spi_panel_data, |
| 436 | panel_data); |
| 437 | |
| 438 | tx_buf = ctrl_pdata->tx_buf; |
| 439 | panel_xres = ctrl_pdata->panel_data.panel_info.xres; |
| 440 | panel_yres = ctrl_pdata->panel_data.panel_info.yres; |
| 441 | |
| 442 | byte_per_pixel = ctrl_pdata->panel_data.panel_info.bpp / 8; |
| 443 | actual_stride = panel_xres * byte_per_pixel; |
| 444 | padding_length = dma_stride - actual_stride; |
| 445 | |
| 446 | /* remove the padding and copy to continuous buffer */ |
| 447 | while (scan_count < panel_yres) { |
| 448 | memcpy((tx_buf + scan_count * actual_stride), |
| 449 | (buf + scan_count * (actual_stride + padding_length)), |
| 450 | actual_stride); |
| 451 | scan_count++; |
| 452 | } |
| 453 | |
| 454 | enable_spi_panel_te_irq(ctrl_pdata, true); |
| 455 | |
| 456 | mutex_lock(&ctrl_pdata->spi_tx_mutex); |
| 457 | reinit_completion(&ctrl_pdata->spi_panel_te); |
| 458 | |
| 459 | rc = wait_for_completion_timeout(&ctrl_pdata->spi_panel_te, |
| 460 | msecs_to_jiffies(SPI_PANEL_TE_TIMEOUT)); |
| 461 | |
| 462 | if (rc == 0) |
| 463 | pr_err("wait panel TE time out\n"); |
| 464 | |
| 465 | rc = mdss_spi_tx_pixel(tx_buf, ctrl_pdata->byte_pre_frame); |
| 466 | mutex_unlock(&ctrl_pdata->spi_tx_mutex); |
| 467 | |
| 468 | return rc; |
| 469 | } |
| 470 | |
| 471 | static int mdss_spi_read_panel_data(struct mdss_panel_data *pdata, |
| 472 | u8 reg_addr, u8 *data, u8 len) |
| 473 | { |
| 474 | int rc = 0; |
| 475 | struct spi_panel_data *ctrl_pdata = NULL; |
| 476 | |
| 477 | ctrl_pdata = container_of(pdata, struct spi_panel_data, |
| 478 | panel_data); |
| 479 | |
| 480 | mutex_lock(&ctrl_pdata->spi_tx_mutex); |
| 481 | gpio_direction_output(ctrl_pdata->disp_dc_gpio, 0); |
| 482 | rc = mdss_spi_read_data(reg_addr, data, len); |
| 483 | gpio_direction_output(ctrl_pdata->disp_dc_gpio, 1); |
| 484 | mutex_unlock(&ctrl_pdata->spi_tx_mutex); |
| 485 | |
| 486 | return rc; |
| 487 | } |
| 488 | |
| 489 | static int mdss_spi_panel_on(struct mdss_panel_data *pdata) |
| 490 | { |
| 491 | struct spi_panel_data *ctrl = NULL; |
| 492 | struct mdss_panel_info *pinfo; |
| 493 | int i; |
| 494 | |
| 495 | if (pdata == NULL) { |
| 496 | pr_err("%s: Invalid input data\n", __func__); |
| 497 | return -EINVAL; |
| 498 | } |
| 499 | pinfo = &pdata->panel_info; |
| 500 | ctrl = container_of(pdata, struct spi_panel_data, |
| 501 | panel_data); |
| 502 | |
| 503 | for (i = 0; i < ctrl->on_cmds.cmd_cnt; i++) { |
| 504 | /* pull down dc gpio indicate this is command */ |
| 505 | gpio_direction_output(ctrl->disp_dc_gpio, 0); |
| 506 | mdss_spi_tx_command(ctrl->on_cmds.cmds[i].command); |
| 507 | gpio_direction_output((ctrl->disp_dc_gpio), 1); |
| 508 | |
| 509 | if (ctrl->on_cmds.cmds[i].dchdr.dlen > 1) { |
| 510 | mdss_spi_tx_parameter(ctrl->on_cmds.cmds[i].parameter, |
| 511 | ctrl->on_cmds.cmds[i].dchdr.dlen-1); |
| 512 | } |
| 513 | if (ctrl->on_cmds.cmds[i].dchdr.wait != 0) |
| 514 | msleep(ctrl->on_cmds.cmds[i].dchdr.wait); |
| 515 | } |
| 516 | |
| 517 | pinfo->blank_state = MDSS_PANEL_BLANK_UNBLANK; |
| 518 | |
| 519 | pr_debug("%s:-\n", __func__); |
| 520 | |
| 521 | return 0; |
| 522 | } |
| 523 | |
| 524 | |
| 525 | static int mdss_spi_panel_off(struct mdss_panel_data *pdata) |
| 526 | { |
| 527 | struct spi_panel_data *ctrl = NULL; |
| 528 | struct mdss_panel_info *pinfo; |
| 529 | int i; |
| 530 | |
| 531 | if (pdata == NULL) { |
| 532 | pr_err("%s: Invalid input data\n", __func__); |
| 533 | return -EINVAL; |
| 534 | } |
| 535 | |
| 536 | pinfo = &pdata->panel_info; |
| 537 | ctrl = container_of(pdata, struct spi_panel_data, |
| 538 | panel_data); |
| 539 | |
| 540 | for (i = 0; i < ctrl->off_cmds.cmd_cnt; i++) { |
| 541 | /* pull down dc gpio indicate this is command */ |
| 542 | gpio_direction_output(ctrl->disp_dc_gpio, 0); |
| 543 | mdss_spi_tx_command(ctrl->off_cmds.cmds[i].command); |
| 544 | gpio_direction_output((ctrl->disp_dc_gpio), 1); |
| 545 | |
| 546 | if (ctrl->off_cmds.cmds[i].dchdr.dlen > 1) { |
| 547 | mdss_spi_tx_parameter(ctrl->off_cmds.cmds[i].parameter, |
| 548 | ctrl->off_cmds.cmds[i].dchdr.dlen-1); |
| 549 | } |
| 550 | |
| 551 | if (ctrl->off_cmds.cmds[i].dchdr.wait != 0) |
| 552 | msleep(ctrl->off_cmds.cmds[i].dchdr.wait); |
| 553 | } |
| 554 | |
| 555 | pinfo->blank_state = MDSS_PANEL_BLANK_BLANK; |
| 556 | |
| 557 | pr_debug("%s:-\n", __func__); |
| 558 | return 0; |
| 559 | } |
| 560 | |
| 561 | static void mdss_spi_put_dt_vreg_data(struct device *dev, |
| 562 | struct mdss_module_power *module_power) |
| 563 | { |
| 564 | if (!module_power) { |
| 565 | pr_err("%s: invalid input\n", __func__); |
| 566 | return; |
| 567 | } |
| 568 | |
| 569 | if (module_power->vreg_config) { |
| 570 | devm_kfree(dev, module_power->vreg_config); |
| 571 | module_power->vreg_config = NULL; |
| 572 | } |
| 573 | module_power->num_vreg = 0; |
| 574 | } |
| 575 | |
| 576 | |
| 577 | static int mdss_spi_get_panel_vreg_data(struct device *dev, |
| 578 | struct mdss_module_power *mp) |
| 579 | { |
| 580 | int i = 0, rc = 0; |
| 581 | u32 tmp = 0; |
| 582 | struct device_node *of_node = NULL, *supply_node = NULL; |
| 583 | struct device_node *supply_root_node = NULL; |
| 584 | |
| 585 | if (!dev || !mp) { |
| 586 | pr_err("%s: invalid input\n", __func__); |
| 587 | rc = -EINVAL; |
| 588 | return rc; |
| 589 | } |
| 590 | |
| 591 | of_node = dev->of_node; |
| 592 | |
| 593 | mp->num_vreg = 0; |
| 594 | |
| 595 | supply_root_node = of_get_child_by_name(of_node, |
| 596 | "qcom,panel-supply-entries"); |
| 597 | |
| 598 | for_each_available_child_of_node(supply_root_node, supply_node) { |
| 599 | mp->num_vreg++; |
| 600 | } |
| 601 | if (mp->num_vreg == 0) { |
| 602 | pr_debug("%s: no vreg\n", __func__); |
| 603 | goto novreg; |
| 604 | } else { |
| 605 | pr_debug("%s: vreg found. count=%d\n", __func__, mp->num_vreg); |
| 606 | } |
| 607 | |
| 608 | mp->vreg_config = kcalloc(mp->num_vreg, sizeof(struct mdss_vreg), |
| 609 | GFP_KERNEL); |
| 610 | |
| 611 | if (mp->vreg_config != NULL) { |
| 612 | for_each_available_child_of_node(supply_root_node, |
| 613 | supply_node) { |
| 614 | const char *st = NULL; |
| 615 | /* vreg-name */ |
| 616 | rc = of_property_read_string(supply_node, |
| 617 | "qcom,supply-name", &st); |
| 618 | if (rc) { |
| 619 | pr_err("%s: error reading name. rc=%d\n", |
| 620 | __func__, rc); |
| 621 | goto error; |
| 622 | } |
| 623 | snprintf(mp->vreg_config[i].vreg_name, |
| 624 | ARRAY_SIZE((mp->vreg_config[i].vreg_name)), |
| 625 | "%s", st); |
| 626 | /* vreg-min-voltage */ |
| 627 | rc = of_property_read_u32(supply_node, |
| 628 | "qcom,supply-min-voltage", &tmp); |
| 629 | if (rc) { |
| 630 | pr_err("%s: error reading min volt. rc=%d\n", |
| 631 | __func__, rc); |
| 632 | goto error; |
| 633 | } |
| 634 | mp->vreg_config[i].min_voltage = tmp; |
| 635 | |
| 636 | /* vreg-max-voltage */ |
| 637 | rc = of_property_read_u32(supply_node, |
| 638 | "qcom,supply-max-voltage", &tmp); |
| 639 | if (rc) { |
| 640 | pr_err("%s: error reading max volt. rc=%d\n", |
| 641 | __func__, rc); |
| 642 | goto error; |
| 643 | } |
| 644 | mp->vreg_config[i].max_voltage = tmp; |
| 645 | |
| 646 | /* enable-load */ |
| 647 | rc = of_property_read_u32(supply_node, |
| 648 | "qcom,supply-enable-load", &tmp); |
| 649 | if (rc) { |
| 650 | pr_err("%s: error read enable load. rc=%d\n", |
| 651 | __func__, rc); |
| 652 | goto error; |
| 653 | } |
| 654 | mp->vreg_config[i].load[DSS_REG_MODE_ENABLE] = tmp; |
| 655 | |
| 656 | /* disable-load */ |
| 657 | rc = of_property_read_u32(supply_node, |
| 658 | "qcom,supply-disable-load", &tmp); |
| 659 | if (rc) { |
| 660 | pr_err("%s: error read disable load. rc=%d\n", |
| 661 | __func__, rc); |
| 662 | goto error; |
| 663 | } |
| 664 | mp->vreg_config[i].load[DSS_REG_MODE_DISABLE] = tmp; |
| 665 | |
| 666 | /* pre-sleep */ |
| 667 | rc = of_property_read_u32(supply_node, |
| 668 | "qcom,supply-pre-on-sleep", &tmp); |
| 669 | if (rc) { |
| 670 | pr_debug("%s: error read pre on value\n", |
| 671 | __func__); |
| 672 | rc = 0; |
| 673 | } else { |
| 674 | mp->vreg_config[i].pre_on_sleep = tmp; |
| 675 | } |
| 676 | |
| 677 | rc = of_property_read_u32(supply_node, |
| 678 | "qcom,supply-pre-off-sleep", &tmp); |
| 679 | if (rc) { |
| 680 | pr_debug("%s: error read pre off value\n", |
| 681 | __func__); |
| 682 | rc = 0; |
| 683 | } else { |
| 684 | mp->vreg_config[i].pre_off_sleep = tmp; |
| 685 | } |
| 686 | |
| 687 | /* post-sleep */ |
| 688 | rc = of_property_read_u32(supply_node, |
| 689 | "qcom,supply-post-on-sleep", &tmp); |
| 690 | if (rc) { |
| 691 | pr_debug("%s: error read post on value\n", |
| 692 | __func__); |
| 693 | rc = 0; |
| 694 | } else { |
| 695 | mp->vreg_config[i].post_on_sleep = tmp; |
| 696 | } |
| 697 | |
| 698 | rc = of_property_read_u32(supply_node, |
| 699 | "qcom,supply-post-off-sleep", &tmp); |
| 700 | if (rc) { |
| 701 | pr_debug("%s: error read post off value\n", |
| 702 | __func__); |
| 703 | rc = 0; |
| 704 | } else { |
| 705 | mp->vreg_config[i].post_off_sleep = tmp; |
| 706 | } |
| 707 | |
| 708 | ++i; |
| 709 | } |
| 710 | } |
| 711 | return rc; |
| 712 | error: |
| 713 | kfree(mp->vreg_config); |
| 714 | mp->vreg_config = NULL; |
| 715 | |
| 716 | novreg: |
| 717 | mp->num_vreg = 0; |
| 718 | |
| 719 | return rc; |
| 720 | |
| 721 | } |
| 722 | |
| 723 | static int mdss_spi_panel_parse_cmds(struct device_node *np, |
| 724 | struct spi_panel_cmds *pcmds, char *cmd_key) |
| 725 | { |
| 726 | const char *data; |
| 727 | int blen = 0, len; |
| 728 | char *buf, *bp; |
| 729 | struct spi_ctrl_hdr *dchdr; |
| 730 | int i, cnt; |
| 731 | |
| 732 | data = of_get_property(np, cmd_key, &blen); |
| 733 | if (!data) { |
| 734 | pr_err("%s: failed, key=%s\n", __func__, cmd_key); |
| 735 | return -ENOMEM; |
| 736 | } |
| 737 | |
| 738 | buf = kcalloc(blen, sizeof(char), GFP_KERNEL); |
| 739 | if (!buf) |
| 740 | return -ENOMEM; |
| 741 | |
| 742 | memcpy(buf, data, blen); |
| 743 | |
| 744 | /* scan dcs commands */ |
| 745 | bp = buf; |
| 746 | len = blen; |
| 747 | cnt = 0; |
| 748 | while (len >= sizeof(*dchdr)) { |
| 749 | dchdr = (struct spi_ctrl_hdr *)bp; |
| 750 | if (dchdr->dlen > len) { |
| 751 | pr_err("%s: dtsi parse error, len=%d", |
| 752 | __func__, dchdr->dlen); |
| 753 | goto exit_free; |
| 754 | } |
| 755 | bp += sizeof(*dchdr); |
| 756 | len -= sizeof(*dchdr); |
| 757 | bp += dchdr->dlen; |
| 758 | len -= dchdr->dlen; |
| 759 | cnt++; |
| 760 | } |
| 761 | |
| 762 | if (len != 0) { |
| 763 | pr_err("%s: dcs_cmd=%x len=%d error", |
| 764 | __func__, buf[0], len); |
| 765 | goto exit_free; |
| 766 | } |
| 767 | |
| 768 | pcmds->cmds = kcalloc(cnt, sizeof(struct spi_cmd_desc), |
| 769 | GFP_KERNEL); |
| 770 | if (!pcmds->cmds) |
| 771 | goto exit_free; |
| 772 | |
| 773 | pcmds->cmd_cnt = cnt; |
| 774 | pcmds->buf = buf; |
| 775 | pcmds->blen = blen; |
| 776 | |
| 777 | bp = buf; |
| 778 | len = blen; |
| 779 | for (i = 0; i < cnt; i++) { |
| 780 | dchdr = (struct spi_ctrl_hdr *)bp; |
| 781 | len -= sizeof(*dchdr); |
| 782 | bp += sizeof(*dchdr); |
| 783 | pcmds->cmds[i].dchdr = *dchdr; |
| 784 | pcmds->cmds[i].command = bp; |
| 785 | pcmds->cmds[i].parameter = bp + sizeof(char); |
| 786 | bp += dchdr->dlen; |
| 787 | len -= dchdr->dlen; |
| 788 | } |
| 789 | |
| 790 | pr_debug("%s: dcs_cmd=%x, len=%d, cmd_cnt=%d\n", __func__, |
| 791 | pcmds->buf[0], pcmds->blen, pcmds->cmd_cnt); |
| 792 | |
| 793 | return 0; |
| 794 | |
| 795 | exit_free: |
| 796 | kfree(buf); |
| 797 | return -ENOMEM; |
| 798 | } |
| 799 | static int mdss_spi_panel_parse_reset_seq(struct device_node *np, |
| 800 | u32 rst_seq[MDSS_SPI_RST_SEQ_LEN], u32 *rst_len, |
| 801 | const char *name) |
| 802 | { |
| 803 | int num = 0, i; |
| 804 | int rc; |
| 805 | struct property *data; |
| 806 | u32 tmp[MDSS_SPI_RST_SEQ_LEN]; |
| 807 | |
| 808 | *rst_len = 0; |
| 809 | data = of_find_property(np, name, &num); |
| 810 | num /= sizeof(u32); |
| 811 | if (!data || !num || num > MDSS_SPI_RST_SEQ_LEN || num % 2) { |
| 812 | pr_err("%s:%d, error reading %s, length found = %d\n", |
| 813 | __func__, __LINE__, name, num); |
| 814 | } else { |
| 815 | rc = of_property_read_u32_array(np, name, tmp, num); |
| 816 | if (rc) |
| 817 | pr_err("%s:%d, error reading %s, rc = %d\n", |
| 818 | __func__, __LINE__, name, rc); |
| 819 | else { |
| 820 | for (i = 0; i < num; ++i) |
| 821 | rst_seq[i] = tmp[i]; |
| 822 | *rst_len = num; |
| 823 | } |
| 824 | } |
| 825 | return 0; |
| 826 | } |
| 827 | |
| 828 | static bool mdss_send_panel_cmd_for_esd(struct spi_panel_data *ctrl_pdata) |
| 829 | { |
| 830 | |
| 831 | if (ctrl_pdata == NULL) { |
| 832 | pr_err("%s: Invalid input data\n", __func__); |
| 833 | return false; |
| 834 | } |
| 835 | |
| 836 | mutex_lock(&ctrl_pdata->spi_tx_mutex); |
| 837 | mdss_spi_panel_on(&ctrl_pdata->panel_data); |
| 838 | mutex_unlock(&ctrl_pdata->spi_tx_mutex); |
| 839 | |
| 840 | return true; |
| 841 | } |
| 842 | |
| 843 | static bool mdss_spi_reg_status_check(struct spi_panel_data *ctrl_pdata) |
| 844 | { |
| 845 | int ret = 0; |
| 846 | int i = 0; |
| 847 | |
| 848 | if (ctrl_pdata == NULL) { |
| 849 | pr_err("%s: Invalid input data\n", __func__); |
| 850 | return false; |
| 851 | } |
| 852 | |
| 853 | pr_debug("%s: Checking Register status\n", __func__); |
| 854 | |
| 855 | ret = mdss_spi_read_panel_data(&ctrl_pdata->panel_data, |
| 856 | ctrl_pdata->panel_status_reg, |
| 857 | ctrl_pdata->act_status_value, |
| 858 | ctrl_pdata->status_cmds_rlen); |
| 859 | if (ret < 0) { |
| 860 | pr_err("%s: Read status register returned error\n", __func__); |
| 861 | } else { |
| 862 | for (i = 0; i < ctrl_pdata->status_cmds_rlen; i++) { |
| 863 | pr_debug("act_value[%d] = %x, exp_value[%d] = %x\n", |
| 864 | i, ctrl_pdata->act_status_value[i], |
| 865 | i, ctrl_pdata->exp_status_value[i]); |
| 866 | if (ctrl_pdata->act_status_value[i] != |
| 867 | ctrl_pdata->exp_status_value[i]) |
| 868 | return false; |
| 869 | } |
| 870 | } |
| 871 | |
| 872 | return true; |
| 873 | } |
| 874 | |
| 875 | static void mdss_spi_parse_esd_params(struct device_node *np, |
| 876 | struct spi_panel_data *ctrl) |
| 877 | { |
| 878 | u32 tmp; |
| 879 | int rc; |
| 880 | struct property *data; |
| 881 | const char *string; |
| 882 | struct mdss_panel_info *pinfo = &ctrl->panel_data.panel_info; |
| 883 | |
| 884 | pinfo->esd_check_enabled = of_property_read_bool(np, |
| 885 | "qcom,esd-check-enabled"); |
| 886 | |
| 887 | if (!pinfo->esd_check_enabled) |
| 888 | return; |
| 889 | |
| 890 | ctrl->status_mode = SPI_ESD_MAX; |
| 891 | |
| 892 | rc = of_property_read_string(np, |
| 893 | "qcom,mdss-spi-panel-status-check-mode", &string); |
| 894 | if (!rc) { |
| 895 | if (!strcmp(string, "reg_read")) { |
| 896 | ctrl->status_mode = SPI_ESD_REG; |
| 897 | ctrl->check_status = |
| 898 | mdss_spi_reg_status_check; |
| 899 | } else if (!strcmp(string, "send_init_command")) { |
| 900 | ctrl->status_mode = SPI_SEND_PANEL_COMMAND; |
| 901 | ctrl->check_status = |
| 902 | mdss_send_panel_cmd_for_esd; |
| 903 | return; |
| 904 | } else { |
| 905 | pr_err("No valid panel-status-check-mode string\n"); |
| 906 | pinfo->esd_check_enabled = false; |
| 907 | return; |
| 908 | } |
| 909 | } |
| 910 | |
| 911 | rc = of_property_read_u8(np, "qcom,mdss-spi-panel-status-reg", |
| 912 | &ctrl->panel_status_reg); |
| 913 | if (rc) { |
| 914 | pr_warn("%s:%d, Read status reg failed, disable ESD check\n", |
| 915 | __func__, __LINE__); |
| 916 | pinfo->esd_check_enabled = false; |
| 917 | return; |
| 918 | } |
| 919 | |
| 920 | rc = of_property_read_u32(np, "qcom,mdss-spi-panel-status-read-length", |
| 921 | &tmp); |
| 922 | if (rc) { |
| 923 | pr_warn("%s:%d, Read reg length failed, disable ESD check\n", |
| 924 | __func__, __LINE__); |
| 925 | pinfo->esd_check_enabled = false; |
| 926 | return; |
| 927 | } |
| 928 | |
| 929 | ctrl->status_cmds_rlen = (!rc ? tmp : 1); |
| 930 | |
| 931 | ctrl->exp_status_value = kzalloc(sizeof(u8) * |
| 932 | (ctrl->status_cmds_rlen + 1), GFP_KERNEL); |
| 933 | ctrl->act_status_value = kzalloc(sizeof(u8) * |
| 934 | (ctrl->status_cmds_rlen + 1), GFP_KERNEL); |
| 935 | |
| 936 | if (!ctrl->exp_status_value || !ctrl->act_status_value) { |
| 937 | pr_err("%s: Error allocating memory for status buffer\n", |
| 938 | __func__); |
| 939 | pinfo->esd_check_enabled = false; |
| 940 | return; |
| 941 | } |
| 942 | |
| 943 | data = of_find_property(np, "qcom,mdss-spi-panel-status-value", &tmp); |
| 944 | tmp /= sizeof(u8); |
| 945 | if (!data || (tmp != ctrl->status_cmds_rlen)) { |
| 946 | pr_err("%s: Panel status values not found\n", __func__); |
| 947 | pinfo->esd_check_enabled = false; |
| 948 | memset(ctrl->exp_status_value, 0, ctrl->status_cmds_rlen); |
| 949 | } else { |
| 950 | rc = of_property_read_u8_array(np, |
| 951 | "qcom,mdss-spi-panel-status-value", |
| 952 | ctrl->exp_status_value, tmp); |
| 953 | if (rc) { |
| 954 | pr_err("%s: Error reading panel status values\n", |
| 955 | __func__); |
| 956 | pinfo->esd_check_enabled = false; |
| 957 | memset(ctrl->exp_status_value, 0, |
| 958 | ctrl->status_cmds_rlen); |
| 959 | } |
| 960 | } |
| 961 | } |
| 962 | |
| 963 | static int mdss_spi_panel_parse_dt(struct device_node *np, |
| 964 | struct spi_panel_data *ctrl_pdata) |
| 965 | { |
| 966 | u32 tmp; |
| 967 | int rc; |
| 968 | const char *data; |
| 969 | struct mdss_panel_info *pinfo = &(ctrl_pdata->panel_data.panel_info); |
| 970 | |
| 971 | pinfo->cont_splash_enabled = of_property_read_bool(np, |
| 972 | "qcom,cont-splash-enabled"); |
| 973 | |
| 974 | rc = of_property_read_u32(np, "qcom,mdss-spi-panel-width", &tmp); |
| 975 | if (rc) { |
| 976 | pr_err("%s: panel width not specified\n", __func__); |
| 977 | return -EINVAL; |
| 978 | } |
| 979 | pinfo->xres = (!rc ? tmp : 240); |
| 980 | |
| 981 | rc = of_property_read_u32(np, "qcom,mdss-spi-panel-height", &tmp); |
| 982 | if (rc) { |
| 983 | pr_err("%s:panel height not specified\n", __func__); |
| 984 | return -EINVAL; |
| 985 | } |
| 986 | pinfo->yres = (!rc ? tmp : 320); |
| 987 | |
| 988 | rc = of_property_read_u32(np, |
| 989 | "qcom,mdss-pan-physical-width-dimension", &tmp); |
| 990 | pinfo->physical_width = (!rc ? tmp : 0); |
| 991 | rc = of_property_read_u32(np, |
| 992 | "qcom,mdss-pan-physical-height-dimension", &tmp); |
| 993 | pinfo->physical_height = (!rc ? tmp : 0); |
| 994 | rc = of_property_read_u32(np, "qcom,mdss-spi-panel-framerate", &tmp); |
| 995 | pinfo->spi.frame_rate = (!rc ? tmp : 30); |
| 996 | rc = of_property_read_u32(np, "qcom,mdss-spi-h-front-porch", &tmp); |
| 997 | pinfo->lcdc.h_front_porch = (!rc ? tmp : 6); |
| 998 | rc = of_property_read_u32(np, "qcom,mdss-spi-h-back-porch", &tmp); |
| 999 | pinfo->lcdc.h_back_porch = (!rc ? tmp : 6); |
| 1000 | rc = of_property_read_u32(np, "qcom,mdss-spi-h-pulse-width", &tmp); |
| 1001 | pinfo->lcdc.h_pulse_width = (!rc ? tmp : 2); |
| 1002 | rc = of_property_read_u32(np, "qcom,mdss-spi-h-sync-skew", &tmp); |
| 1003 | pinfo->lcdc.hsync_skew = (!rc ? tmp : 0); |
| 1004 | rc = of_property_read_u32(np, "qcom,mdss-spi-v-back-porch", &tmp); |
| 1005 | pinfo->lcdc.v_back_porch = (!rc ? tmp : 6); |
| 1006 | rc = of_property_read_u32(np, "qcom,mdss-spi-v-front-porch", &tmp); |
| 1007 | pinfo->lcdc.v_front_porch = (!rc ? tmp : 6); |
| 1008 | rc = of_property_read_u32(np, "qcom,mdss-spi-v-pulse-width", &tmp); |
| 1009 | pinfo->lcdc.v_pulse_width = (!rc ? tmp : 2); |
| 1010 | |
| 1011 | |
| 1012 | rc = of_property_read_u32(np, "qcom,mdss-spi-bpp", &tmp); |
| 1013 | if (rc) { |
| 1014 | pr_err("%s: bpp not specified\n", __func__); |
| 1015 | return -EINVAL; |
| 1016 | } |
| 1017 | pinfo->bpp = (!rc ? tmp : 16); |
| 1018 | |
| 1019 | pinfo->pdest = DISPLAY_1; |
| 1020 | |
| 1021 | ctrl_pdata->bklt_ctrl = SPI_UNKNOWN_CTRL; |
| 1022 | data = of_get_property(np, "qcom,mdss-spi-bl-pmic-control-type", NULL); |
| 1023 | if (data) { |
| 1024 | if (!strcmp(data, "bl_ctrl_wled")) { |
| 1025 | led_trigger_register_simple("bkl-trigger", |
| 1026 | &bl_led_trigger); |
| 1027 | pr_debug("%s: SUCCESS-> WLED TRIGGER register\n", |
| 1028 | __func__); |
| 1029 | ctrl_pdata->bklt_ctrl = SPI_BL_WLED; |
| 1030 | } else if (!strcmp(data, "bl_gpio_pulse")) { |
| 1031 | led_trigger_register_simple("gpio-bklt-trigger", |
| 1032 | &bl_led_trigger); |
| 1033 | pr_debug("%s: SUCCESS-> GPIO PULSE TRIGGER register\n", |
| 1034 | __func__); |
| 1035 | ctrl_pdata->bklt_ctrl = SPI_BL_WLED; |
| 1036 | } else if (!strcmp(data, "bl_ctrl_pwm")) { |
| 1037 | ctrl_pdata->bklt_ctrl = SPI_BL_PWM; |
| 1038 | ctrl_pdata->pwm_pmi = of_property_read_bool(np, |
| 1039 | "qcom,mdss-spi-bl-pwm-pmi"); |
| 1040 | rc = of_property_read_u32(np, |
| 1041 | "qcom,mdss-spi-bl-pmic-pwm-frequency", &tmp); |
| 1042 | if (rc) { |
| 1043 | pr_err("%s: Error, panel pwm_period\n", |
| 1044 | __func__); |
| 1045 | return -EINVAL; |
| 1046 | } |
| 1047 | ctrl_pdata->pwm_period = tmp; |
| 1048 | if (ctrl_pdata->pwm_pmi) { |
| 1049 | ctrl_pdata->pwm_bl = of_pwm_get(np, NULL); |
| 1050 | if (IS_ERR(ctrl_pdata->pwm_bl)) { |
| 1051 | pr_err("%s: Error, pwm device\n", |
| 1052 | __func__); |
| 1053 | ctrl_pdata->pwm_bl = NULL; |
| 1054 | return -EINVAL; |
| 1055 | } |
| 1056 | } else { |
| 1057 | rc = of_property_read_u32(np, |
| 1058 | "qcom,mdss-spi-bl-pmic-bank-select", |
| 1059 | &tmp); |
| 1060 | if (rc) { |
| 1061 | pr_err("%s: Error, lpg channel\n", |
| 1062 | __func__); |
| 1063 | return -EINVAL; |
| 1064 | } |
| 1065 | ctrl_pdata->pwm_lpg_chan = tmp; |
| 1066 | tmp = of_get_named_gpio(np, |
| 1067 | "qcom,mdss-spi-pwm-gpio", 0); |
| 1068 | ctrl_pdata->pwm_pmic_gpio = tmp; |
| 1069 | pr_debug("%s: Configured PWM bklt ctrl\n", |
| 1070 | __func__); |
| 1071 | } |
| 1072 | } |
| 1073 | } |
| 1074 | rc = of_property_read_u32(np, "qcom,mdss-brightness-max-level", &tmp); |
| 1075 | pinfo->brightness_max = (!rc ? tmp : MDSS_MAX_BL_BRIGHTNESS); |
| 1076 | rc = of_property_read_u32(np, "qcom,mdss-spi-bl-min-level", &tmp); |
| 1077 | pinfo->bl_min = (!rc ? tmp : 0); |
| 1078 | rc = of_property_read_u32(np, "qcom,mdss-spi-bl-max-level", &tmp); |
| 1079 | pinfo->bl_max = (!rc ? tmp : 255); |
| 1080 | ctrl_pdata->bklt_max = pinfo->bl_max; |
| 1081 | |
| 1082 | |
| 1083 | mdss_spi_panel_parse_reset_seq(np, pinfo->rst_seq, |
| 1084 | &(pinfo->rst_seq_len), |
| 1085 | "qcom,mdss-spi-reset-sequence"); |
| 1086 | |
| 1087 | mdss_spi_panel_parse_cmds(np, &ctrl_pdata->on_cmds, |
| 1088 | "qcom,mdss-spi-on-command"); |
| 1089 | |
| 1090 | mdss_spi_panel_parse_cmds(np, &ctrl_pdata->off_cmds, |
| 1091 | "qcom,mdss-spi-off-command"); |
| 1092 | |
| 1093 | mdss_spi_parse_esd_params(np, ctrl_pdata); |
| 1094 | |
| 1095 | |
| 1096 | return 0; |
| 1097 | } |
| 1098 | |
| 1099 | static void mdss_spi_panel_pwm_cfg(struct spi_panel_data *ctrl) |
| 1100 | { |
| 1101 | if (ctrl->pwm_pmi) |
| 1102 | return; |
| 1103 | |
| 1104 | ctrl->pwm_bl = pwm_request(ctrl->pwm_lpg_chan, "lcd-bklt"); |
| 1105 | if (ctrl->pwm_bl == NULL || IS_ERR(ctrl->pwm_bl)) { |
| 1106 | pr_err("%s: Error: lpg_chan=%d pwm request failed", |
| 1107 | __func__, ctrl->pwm_lpg_chan); |
| 1108 | } |
| 1109 | ctrl->pwm_enabled = 0; |
| 1110 | } |
| 1111 | |
| 1112 | static void mdss_spi_panel_bklt_pwm(struct spi_panel_data *ctrl, int level) |
| 1113 | { |
| 1114 | int ret; |
| 1115 | u32 duty; |
| 1116 | u32 period_ns; |
| 1117 | |
| 1118 | if (ctrl->pwm_bl == NULL) { |
| 1119 | pr_err("%s: no PWM\n", __func__); |
| 1120 | return; |
| 1121 | } |
| 1122 | |
| 1123 | if (level == 0) { |
| 1124 | if (ctrl->pwm_enabled) { |
Raghavendra Ambadas | 70867fe | 2020-03-19 13:24:54 +0530 | [diff] [blame] | 1125 | ret = pwm_config(ctrl->pwm_bl, 0, |
| 1126 | ctrl->pwm_period * NSEC_PER_USEC); |
Arun kumar | db96281 | 2018-05-30 16:31:52 +0530 | [diff] [blame] | 1127 | if (ret) |
Raghavendra Ambadas | 70867fe | 2020-03-19 13:24:54 +0530 | [diff] [blame] | 1128 | pr_err("%s: pwm_config() failed err=%d.\n", |
Arun kumar | db96281 | 2018-05-30 16:31:52 +0530 | [diff] [blame] | 1129 | __func__, ret); |
| 1130 | pwm_disable(ctrl->pwm_bl); |
| 1131 | } |
| 1132 | ctrl->pwm_enabled = 0; |
| 1133 | return; |
| 1134 | } |
| 1135 | |
| 1136 | duty = level * ctrl->pwm_period; |
| 1137 | duty /= ctrl->bklt_max; |
| 1138 | |
| 1139 | pr_debug("%s: bklt_ctrl=%d pwm_period=%d pwm_gpio=%d pwm_lpg_chan=%d\n", |
| 1140 | __func__, ctrl->bklt_ctrl, ctrl->pwm_period, |
| 1141 | ctrl->pwm_pmic_gpio, ctrl->pwm_lpg_chan); |
| 1142 | |
| 1143 | if (ctrl->pwm_period >= USEC_PER_SEC) { |
| 1144 | ret = pwm_config_us(ctrl->pwm_bl, duty, ctrl->pwm_period); |
| 1145 | if (ret) { |
| 1146 | pr_err("%s: pwm_config_us() failed err=%d\n", |
| 1147 | __func__, ret); |
| 1148 | return; |
| 1149 | } |
| 1150 | } else { |
| 1151 | period_ns = ctrl->pwm_period * NSEC_PER_USEC; |
| 1152 | ret = pwm_config(ctrl->pwm_bl, |
| 1153 | level * period_ns / ctrl->bklt_max, |
| 1154 | period_ns); |
| 1155 | if (ret) { |
| 1156 | pr_err("%s: pwm_config() failed err=%d\n", |
| 1157 | __func__, ret); |
| 1158 | return; |
| 1159 | } |
| 1160 | } |
| 1161 | |
| 1162 | if (!ctrl->pwm_enabled) { |
| 1163 | ret = pwm_enable(ctrl->pwm_bl); |
| 1164 | if (ret) |
| 1165 | pr_err("%s: pwm_enable() failed err=%d\n", __func__, |
| 1166 | ret); |
| 1167 | ctrl->pwm_enabled = 1; |
| 1168 | } |
| 1169 | } |
| 1170 | |
| 1171 | static void mdss_spi_panel_bl_ctrl(struct mdss_panel_data *pdata, |
| 1172 | u32 bl_level) |
| 1173 | { |
Krishna Manikandan | 695632e | 2020-03-04 20:50:28 +0530 | [diff] [blame] | 1174 | /* Allow panel backlight update if secure UI is enabled */ |
| 1175 | if (bl_level && !mdp3_res->secure_update_bl) { |
Arun kumar | db96281 | 2018-05-30 16:31:52 +0530 | [diff] [blame] | 1176 | mdp3_res->bklt_level = bl_level; |
| 1177 | mdp3_res->bklt_update = true; |
| 1178 | } else { |
| 1179 | mdss_spi_panel_bl_ctrl_update(pdata, bl_level); |
| 1180 | } |
| 1181 | } |
| 1182 | |
| 1183 | #if defined(CONFIG_FB_MSM_MDSS_SPI_PANEL) && defined(CONFIG_SPI_QUP) |
| 1184 | void mdss_spi_panel_bl_ctrl_update(struct mdss_panel_data *pdata, |
| 1185 | u32 bl_level) |
| 1186 | { |
| 1187 | struct spi_panel_data *ctrl_pdata = NULL; |
| 1188 | |
| 1189 | if (pdata == NULL) { |
| 1190 | pr_err("%s: Invalid input data\n", __func__); |
| 1191 | return; |
| 1192 | } |
| 1193 | |
| 1194 | ctrl_pdata = container_of(pdata, struct spi_panel_data, |
| 1195 | panel_data); |
| 1196 | |
| 1197 | if ((bl_level < pdata->panel_info.bl_min) && (bl_level != 0)) |
| 1198 | bl_level = pdata->panel_info.bl_min; |
| 1199 | |
| 1200 | switch (ctrl_pdata->bklt_ctrl) { |
| 1201 | case SPI_BL_WLED: |
| 1202 | led_trigger_event(bl_led_trigger, bl_level); |
| 1203 | break; |
| 1204 | case SPI_BL_PWM: |
| 1205 | mdss_spi_panel_bklt_pwm(ctrl_pdata, bl_level); |
| 1206 | break; |
| 1207 | default: |
| 1208 | pr_err("%s: Unknown bl_ctrl configuration %d\n", |
| 1209 | __func__, ctrl_pdata->bklt_ctrl); |
| 1210 | break; |
| 1211 | } |
| 1212 | } |
| 1213 | #endif |
| 1214 | |
| 1215 | static int mdss_spi_panel_init(struct device_node *node, |
| 1216 | struct spi_panel_data *ctrl_pdata, |
| 1217 | bool cmd_cfg_cont_splash) |
| 1218 | { |
| 1219 | int rc = 0; |
| 1220 | static const char *panel_name; |
| 1221 | struct mdss_panel_info *pinfo; |
| 1222 | |
| 1223 | if (!node || !ctrl_pdata) { |
| 1224 | pr_err("%s: Invalid arguments\n", __func__); |
| 1225 | return -ENODEV; |
| 1226 | } |
| 1227 | |
| 1228 | pinfo = &ctrl_pdata->panel_data.panel_info; |
| 1229 | |
| 1230 | pr_debug("%s:%d\n", __func__, __LINE__); |
| 1231 | pinfo->panel_name[0] = '\0'; |
| 1232 | panel_name = of_get_property(node, "qcom,mdss-spi-panel-name", NULL); |
| 1233 | if (!panel_name) { |
| 1234 | pr_info("%s:%d, Panel name not specified\n", |
| 1235 | __func__, __LINE__); |
| 1236 | } else { |
| 1237 | pr_debug("%s: Panel Name = %s\n", __func__, panel_name); |
| 1238 | strlcpy(&pinfo->panel_name[0], panel_name, MDSS_MAX_PANEL_LEN); |
| 1239 | } |
| 1240 | rc = mdss_spi_panel_parse_dt(node, ctrl_pdata); |
| 1241 | if (rc) { |
| 1242 | pr_err("%s:%d panel dt parse failed\n", __func__, __LINE__); |
| 1243 | return rc; |
| 1244 | } |
| 1245 | |
| 1246 | ctrl_pdata->byte_pre_frame = pinfo->xres * pinfo->yres * pinfo->bpp/8; |
| 1247 | |
| 1248 | ctrl_pdata->tx_buf = kmalloc(ctrl_pdata->byte_pre_frame, GFP_KERNEL); |
| 1249 | |
| 1250 | if (!cmd_cfg_cont_splash) |
| 1251 | pinfo->cont_splash_enabled = false; |
| 1252 | |
| 1253 | pr_info("%s: Continuous splash %s\n", __func__, |
| 1254 | pinfo->cont_splash_enabled ? "enabled" : "disabled"); |
| 1255 | |
| 1256 | pinfo->dynamic_switch_pending = false; |
| 1257 | pinfo->is_lpm_mode = false; |
| 1258 | pinfo->esd_rdy = false; |
| 1259 | |
| 1260 | ctrl_pdata->on = mdss_spi_panel_on; |
| 1261 | ctrl_pdata->off = mdss_spi_panel_off; |
| 1262 | ctrl_pdata->panel_data.set_backlight = mdss_spi_panel_bl_ctrl; |
| 1263 | |
| 1264 | return 0; |
| 1265 | } |
| 1266 | |
| 1267 | static int mdss_spi_get_panel_cfg(char *panel_cfg, |
| 1268 | struct spi_panel_data *ctrl_pdata) |
| 1269 | { |
| 1270 | int rc; |
| 1271 | struct mdss_panel_cfg *pan_cfg = NULL; |
| 1272 | |
| 1273 | if (!ctrl_pdata) |
| 1274 | return MDSS_PANEL_INTF_INVALID; |
| 1275 | |
| 1276 | pan_cfg = ctrl_pdata->mdss_util->panel_intf_type(MDSS_PANEL_INTF_SPI); |
| 1277 | if (IS_ERR(pan_cfg)) { |
| 1278 | return PTR_ERR(pan_cfg); |
| 1279 | } else if (!pan_cfg) { |
| 1280 | panel_cfg[0] = 0; |
| 1281 | return 0; |
| 1282 | } |
| 1283 | |
| 1284 | pr_debug("%s:%d: cfg:[%s]\n", __func__, __LINE__, |
| 1285 | pan_cfg->arg_cfg); |
| 1286 | ctrl_pdata->panel_data.panel_info.is_prim_panel = true; |
| 1287 | rc = strlcpy(panel_cfg, pan_cfg->arg_cfg, |
| 1288 | sizeof(pan_cfg->arg_cfg)); |
| 1289 | return rc; |
| 1290 | } |
| 1291 | |
| 1292 | static int mdss_spi_panel_regulator_init(struct platform_device *pdev) |
| 1293 | { |
| 1294 | int rc = 0; |
| 1295 | |
| 1296 | struct spi_panel_data *ctrl_pdata = NULL; |
| 1297 | |
| 1298 | if (!pdev) { |
| 1299 | pr_err("%s: invalid input\n", __func__); |
| 1300 | return -EINVAL; |
| 1301 | } |
| 1302 | |
| 1303 | ctrl_pdata = platform_get_drvdata(pdev); |
| 1304 | if (!ctrl_pdata) { |
| 1305 | pr_err("%s: invalid driver data\n", __func__); |
| 1306 | return -EINVAL; |
| 1307 | } |
| 1308 | |
| 1309 | rc = msm_mdss_config_vreg(&pdev->dev, |
| 1310 | ctrl_pdata->panel_power_data.vreg_config, |
| 1311 | ctrl_pdata->panel_power_data.num_vreg, 1); |
| 1312 | if (rc) |
| 1313 | pr_err("%s: failed to init vregs for %s\n", |
| 1314 | __func__, "PANEL_PM"); |
| 1315 | |
| 1316 | return rc; |
| 1317 | |
| 1318 | } |
| 1319 | |
| 1320 | static irqreturn_t spi_panel_te_handler(int irq, void *data) |
| 1321 | { |
| 1322 | struct spi_panel_data *ctrl_pdata = (struct spi_panel_data *)data; |
| 1323 | static int count = 2; |
| 1324 | |
| 1325 | if (!ctrl_pdata) { |
| 1326 | pr_err("%s: SPI display not available\n", __func__); |
| 1327 | return IRQ_HANDLED; |
| 1328 | } |
| 1329 | complete(&ctrl_pdata->spi_panel_te); |
| 1330 | |
| 1331 | if (ctrl_pdata->vsync_client.handler && !(--count)) { |
| 1332 | ctrl_pdata->vsync_client.handler(ctrl_pdata->vsync_client.arg); |
| 1333 | count = 2; |
| 1334 | } |
| 1335 | |
| 1336 | return IRQ_HANDLED; |
| 1337 | } |
| 1338 | |
| 1339 | void mdp3_spi_vsync_enable(struct mdss_panel_data *pdata, |
| 1340 | struct mdp3_notification *vsync_client) |
| 1341 | { |
| 1342 | int updated = 0; |
| 1343 | struct spi_panel_data *ctrl_pdata = NULL; |
| 1344 | |
| 1345 | if (pdata == NULL) { |
| 1346 | pr_err("%s: Invalid input data\n", __func__); |
| 1347 | return; |
| 1348 | } |
| 1349 | |
| 1350 | ctrl_pdata = container_of(pdata, struct spi_panel_data, |
| 1351 | panel_data); |
| 1352 | |
| 1353 | if (vsync_client) { |
| 1354 | if (ctrl_pdata->vsync_client.handler != vsync_client->handler) { |
| 1355 | ctrl_pdata->vsync_client = *vsync_client; |
| 1356 | updated = 1; |
| 1357 | } |
| 1358 | } else { |
| 1359 | if (ctrl_pdata->vsync_client.handler) { |
| 1360 | ctrl_pdata->vsync_client.handler = NULL; |
| 1361 | ctrl_pdata->vsync_client.arg = NULL; |
| 1362 | updated = 1; |
| 1363 | } |
| 1364 | } |
| 1365 | |
| 1366 | if (updated) { |
| 1367 | if (vsync_client && vsync_client->handler) |
| 1368 | enable_spi_panel_te_irq(ctrl_pdata, true); |
| 1369 | else |
| 1370 | enable_spi_panel_te_irq(ctrl_pdata, false); |
| 1371 | } |
| 1372 | } |
| 1373 | |
| 1374 | static struct device_node *mdss_spi_pref_prim_panel( |
| 1375 | struct platform_device *pdev) |
| 1376 | { |
| 1377 | struct device_node *spi_pan_node = NULL; |
| 1378 | |
| 1379 | pr_debug("%s:%d: Select primary panel from dt\n", |
| 1380 | __func__, __LINE__); |
| 1381 | spi_pan_node = of_parse_phandle(pdev->dev.of_node, |
| 1382 | "qcom,spi-pref-prim-pan", 0); |
| 1383 | if (!spi_pan_node) |
| 1384 | pr_err("%s:can't find panel phandle\n", __func__); |
| 1385 | |
| 1386 | return spi_pan_node; |
| 1387 | } |
| 1388 | |
| 1389 | static int spi_panel_device_register(struct device_node *pan_node, |
| 1390 | struct spi_panel_data *ctrl_pdata) |
| 1391 | { |
| 1392 | int rc; |
| 1393 | struct mdss_panel_info *pinfo = &(ctrl_pdata->panel_data.panel_info); |
| 1394 | struct device_node *spi_ctrl_np = NULL; |
| 1395 | struct platform_device *ctrl_pdev = NULL; |
| 1396 | |
| 1397 | pinfo->type = SPI_PANEL; |
| 1398 | |
| 1399 | spi_ctrl_np = of_parse_phandle(pan_node, |
| 1400 | "qcom,mdss-spi-panel-controller", 0); |
| 1401 | if (!spi_ctrl_np) { |
| 1402 | pr_err("%s: SPI controller node not initialized\n", __func__); |
| 1403 | return -EPROBE_DEFER; |
| 1404 | } |
| 1405 | |
| 1406 | ctrl_pdev = of_find_device_by_node(spi_ctrl_np); |
| 1407 | if (!ctrl_pdev) { |
| 1408 | of_node_put(spi_ctrl_np); |
| 1409 | pr_err("%s: SPI controller node not find\n", __func__); |
| 1410 | return -EPROBE_DEFER; |
| 1411 | } |
| 1412 | |
| 1413 | rc = mdss_spi_panel_regulator_init(ctrl_pdev); |
| 1414 | if (rc) { |
| 1415 | pr_err("%s: failed to init regulator, rc=%d\n", |
| 1416 | __func__, rc); |
| 1417 | return rc; |
| 1418 | } |
| 1419 | |
| 1420 | pinfo->panel_max_fps = mdss_panel_get_framerate(pinfo, |
| 1421 | FPS_RESOLUTION_HZ); |
| 1422 | pinfo->panel_max_vtotal = mdss_panel_get_vtotal(pinfo); |
| 1423 | |
| 1424 | ctrl_pdata->disp_te_gpio = of_get_named_gpio(ctrl_pdev->dev.of_node, |
| 1425 | "qcom,platform-te-gpio", 0); |
| 1426 | if (!gpio_is_valid(ctrl_pdata->disp_te_gpio)) |
| 1427 | pr_err("%s:%d, TE gpio not specified\n", |
| 1428 | __func__, __LINE__); |
| 1429 | |
| 1430 | ctrl_pdata->disp_dc_gpio = of_get_named_gpio(ctrl_pdev->dev.of_node, |
| 1431 | "qcom,platform-spi-dc-gpio", 0); |
| 1432 | if (!gpio_is_valid(ctrl_pdata->disp_dc_gpio)) |
| 1433 | pr_err("%s:%d, SPI DC gpio not specified\n", |
| 1434 | __func__, __LINE__); |
| 1435 | |
| 1436 | ctrl_pdata->rst_gpio = of_get_named_gpio(ctrl_pdev->dev.of_node, |
| 1437 | "qcom,platform-reset-gpio", 0); |
| 1438 | if (!gpio_is_valid(ctrl_pdata->rst_gpio)) |
| 1439 | pr_err("%s:%d, reset gpio not specified\n", |
| 1440 | __func__, __LINE__); |
| 1441 | |
| 1442 | ctrl_pdata->panel_data.event_handler = mdss_spi_panel_event_handler; |
| 1443 | |
| 1444 | if (ctrl_pdata->bklt_ctrl == SPI_BL_PWM) |
| 1445 | mdss_spi_panel_pwm_cfg(ctrl_pdata); |
| 1446 | |
| 1447 | ctrl_pdata->ctrl_state = CTRL_STATE_UNKNOWN; |
| 1448 | |
| 1449 | if (pinfo->cont_splash_enabled) { |
| 1450 | rc = mdss_spi_panel_power_ctrl(&(ctrl_pdata->panel_data), |
| 1451 | MDSS_PANEL_POWER_ON); |
| 1452 | if (rc) { |
| 1453 | pr_err("%s: Panel power on failed\n", __func__); |
| 1454 | return rc; |
| 1455 | } |
| 1456 | if (ctrl_pdata->bklt_ctrl == SPI_BL_PWM) |
| 1457 | ctrl_pdata->pwm_enabled = 1; |
| 1458 | pinfo->blank_state = MDSS_PANEL_BLANK_UNBLANK; |
| 1459 | ctrl_pdata->ctrl_state |= |
| 1460 | (CTRL_STATE_PANEL_INIT | CTRL_STATE_MDP_ACTIVE); |
| 1461 | } else { |
| 1462 | pinfo->panel_power_state = MDSS_PANEL_POWER_OFF; |
| 1463 | } |
| 1464 | |
| 1465 | rc = mdss_register_panel(ctrl_pdev, &(ctrl_pdata->panel_data)); |
| 1466 | if (rc) { |
| 1467 | pr_err("%s: unable to register SPI panel\n", __func__); |
| 1468 | return rc; |
| 1469 | } |
| 1470 | |
| 1471 | pr_debug("%s: Panel data initialized\n", __func__); |
| 1472 | return 0; |
| 1473 | } |
| 1474 | |
| 1475 | |
| 1476 | /** |
| 1477 | * mdss_spi_find_panel_of_node(): find device node of spi panel |
| 1478 | * @pdev: platform_device of the spi ctrl node |
| 1479 | * @panel_cfg: string containing intf specific config data |
| 1480 | * |
| 1481 | * Function finds the panel device node using the interface |
| 1482 | * specific configuration data. This configuration data is |
| 1483 | * could be derived from the result of bootloader's GCDB |
| 1484 | * panel detection mechanism. If such config data doesn't |
| 1485 | * exist then this panel returns the default panel configured |
| 1486 | * in the device tree. |
| 1487 | * |
| 1488 | * returns pointer to panel node on success, NULL on error. |
| 1489 | */ |
| 1490 | static struct device_node *mdss_spi_find_panel_of_node( |
| 1491 | struct platform_device *pdev, char *panel_cfg) |
| 1492 | { |
| 1493 | int len, i; |
| 1494 | int ctrl_id = pdev->id - 1; |
| 1495 | char panel_name[MDSS_MAX_PANEL_LEN] = ""; |
| 1496 | char ctrl_id_stream[3] = "0:"; |
| 1497 | char *stream = NULL, *pan = NULL; |
| 1498 | struct device_node *spi_pan_node = NULL, *mdss_node = NULL; |
| 1499 | |
| 1500 | len = strlen(panel_cfg); |
| 1501 | if (!len) { |
| 1502 | /* no panel cfg chg, parse dt */ |
| 1503 | pr_err("%s:%d: no cmd line cfg present\n", |
| 1504 | __func__, __LINE__); |
| 1505 | goto end; |
| 1506 | } else { |
| 1507 | if (ctrl_id == 1) |
| 1508 | strlcpy(ctrl_id_stream, "1:", 3); |
| 1509 | |
| 1510 | stream = strnstr(panel_cfg, ctrl_id_stream, len); |
| 1511 | if (!stream) { |
| 1512 | pr_err("controller config is not present\n"); |
| 1513 | goto end; |
| 1514 | } |
| 1515 | stream += 2; |
| 1516 | |
| 1517 | pan = strnchr(stream, strlen(stream), ':'); |
| 1518 | if (!pan) { |
| 1519 | strlcpy(panel_name, stream, MDSS_MAX_PANEL_LEN); |
| 1520 | } else { |
| 1521 | for (i = 0; (stream + i) < pan; i++) |
| 1522 | panel_name[i] = *(stream + i); |
| 1523 | panel_name[i] = 0; |
| 1524 | } |
| 1525 | |
| 1526 | pr_debug("%s:%d:%s:%s\n", __func__, __LINE__, |
| 1527 | panel_cfg, panel_name); |
| 1528 | |
| 1529 | mdss_node = of_parse_phandle(pdev->dev.of_node, |
| 1530 | "qcom,mdss-mdp", 0); |
| 1531 | if (!mdss_node) { |
| 1532 | pr_err("%s: %d: mdss_node null\n", |
| 1533 | __func__, __LINE__); |
| 1534 | return NULL; |
| 1535 | } |
| 1536 | |
| 1537 | spi_pan_node = of_find_node_by_name(mdss_node, |
| 1538 | panel_name); |
| 1539 | if (!spi_pan_node) { |
| 1540 | pr_err("%s: invalid pan node, selecting prim panel\n", |
| 1541 | __func__); |
| 1542 | goto end; |
| 1543 | } |
| 1544 | return spi_pan_node; |
| 1545 | } |
| 1546 | end: |
| 1547 | if (strcmp(panel_name, NONE_PANEL)) |
| 1548 | spi_pan_node = mdss_spi_pref_prim_panel(pdev); |
| 1549 | of_node_put(mdss_node); |
| 1550 | return spi_pan_node; |
| 1551 | } |
| 1552 | |
| 1553 | |
| 1554 | static int mdss_spi_panel_probe(struct platform_device *pdev) |
| 1555 | { |
| 1556 | int rc = 0; |
| 1557 | struct spi_panel_data *ctrl_pdata; |
| 1558 | struct mdss_panel_cfg *pan_cfg = NULL; |
| 1559 | struct device_node *spi_pan_node = NULL; |
| 1560 | bool cmd_cfg_cont_splash = true; |
| 1561 | char panel_cfg[MDSS_MAX_PANEL_LEN]; |
| 1562 | struct mdss_util_intf *util; |
| 1563 | const char *ctrl_name; |
| 1564 | |
| 1565 | util = mdss_get_util_intf(); |
| 1566 | if (util == NULL) { |
| 1567 | pr_err("Failed to get mdss utility functions\n"); |
| 1568 | return -ENODEV; |
| 1569 | } |
| 1570 | |
| 1571 | if (!util->mdp_probe_done) { |
| 1572 | pr_err("%s: MDP not probed yet\n", __func__); |
| 1573 | return -EPROBE_DEFER; |
| 1574 | } |
| 1575 | |
| 1576 | if (!pdev->dev.of_node) { |
| 1577 | pr_err("SPI driver only supports device tree probe\n"); |
| 1578 | return -ENOTSUPP; |
| 1579 | } |
| 1580 | |
| 1581 | pan_cfg = util->panel_intf_type(MDSS_PANEL_INTF_DSI); |
| 1582 | if (IS_ERR(pan_cfg)) { |
| 1583 | pr_err("%s: return MDSS_PANEL_INTF_DSI\n", __func__); |
| 1584 | return PTR_ERR(pan_cfg); |
| 1585 | } else if (pan_cfg) { |
| 1586 | pr_err("%s: DSI is primary\n", __func__); |
| 1587 | return -ENODEV; |
| 1588 | } |
| 1589 | |
| 1590 | ctrl_pdata = platform_get_drvdata(pdev); |
| 1591 | if (!ctrl_pdata) { |
| 1592 | ctrl_pdata = devm_kzalloc(&pdev->dev, |
| 1593 | sizeof(struct spi_panel_data), |
| 1594 | GFP_KERNEL); |
| 1595 | if (!ctrl_pdata) { |
| 1596 | pr_err("%s: FAILED: cannot alloc spi panel\n", |
| 1597 | __func__); |
| 1598 | rc = -ENOMEM; |
| 1599 | goto error_no_mem; |
| 1600 | } |
| 1601 | platform_set_drvdata(pdev, ctrl_pdata); |
| 1602 | } |
| 1603 | |
| 1604 | ctrl_pdata->mdss_util = util; |
| 1605 | |
| 1606 | ctrl_name = of_get_property(pdev->dev.of_node, "label", NULL); |
| 1607 | if (!ctrl_name) |
| 1608 | pr_info("%s:%d, Ctrl name not specified\n", |
| 1609 | __func__, __LINE__); |
| 1610 | else |
| 1611 | pr_debug("%s: Ctrl name = %s\n", |
| 1612 | __func__, ctrl_name); |
| 1613 | |
| 1614 | |
| 1615 | rc = of_platform_populate(pdev->dev.of_node, |
| 1616 | NULL, NULL, &pdev->dev); |
| 1617 | if (rc) { |
| 1618 | dev_err(&pdev->dev, |
| 1619 | "%s: failed to add child nodes, rc=%d\n", |
| 1620 | __func__, rc); |
| 1621 | goto error_no_mem; |
| 1622 | } |
| 1623 | |
| 1624 | rc = mdss_spi_panel_pinctrl_init(pdev); |
| 1625 | if (rc) |
| 1626 | pr_warn("%s: failed to get pin resources\n", __func__); |
| 1627 | |
| 1628 | rc = mdss_spi_get_panel_vreg_data(&pdev->dev, |
| 1629 | &ctrl_pdata->panel_power_data); |
| 1630 | if (rc) { |
| 1631 | dev_err(&pdev->dev, |
| 1632 | "%s: failed to get panel vreg data, rc=%d\n", |
| 1633 | __func__, rc); |
| 1634 | goto error_vreg; |
| 1635 | } |
| 1636 | |
| 1637 | /* SPI panels can be different between controllers */ |
| 1638 | rc = mdss_spi_get_panel_cfg(panel_cfg, ctrl_pdata); |
| 1639 | if (!rc) |
| 1640 | /* spi panel cfg not present */ |
| 1641 | pr_warn("%s:%d:spi specific cfg not present\n", |
| 1642 | __func__, __LINE__); |
| 1643 | |
| 1644 | /* find panel device node */ |
| 1645 | spi_pan_node = mdss_spi_find_panel_of_node(pdev, panel_cfg); |
| 1646 | if (!spi_pan_node) { |
| 1647 | pr_err("%s: can't find panel node %s\n", __func__, panel_cfg); |
| 1648 | goto error_pan_node; |
| 1649 | } |
| 1650 | |
| 1651 | cmd_cfg_cont_splash = true; |
| 1652 | |
| 1653 | rc = mdss_spi_panel_init(spi_pan_node, ctrl_pdata, cmd_cfg_cont_splash); |
| 1654 | if (rc) { |
| 1655 | pr_err("%s: spi panel init failed\n", __func__); |
| 1656 | goto error_pan_node; |
| 1657 | } |
| 1658 | |
| 1659 | rc = spi_panel_device_register(spi_pan_node, ctrl_pdata); |
| 1660 | if (rc) { |
| 1661 | pr_err("%s: spi panel dev reg failed\n", __func__); |
| 1662 | goto error_pan_node; |
| 1663 | } |
| 1664 | |
| 1665 | ctrl_pdata->panel_data.event_handler = mdss_spi_panel_event_handler; |
| 1666 | |
| 1667 | |
| 1668 | init_completion(&ctrl_pdata->spi_panel_te); |
| 1669 | mutex_init(&ctrl_pdata->spi_tx_mutex); |
| 1670 | |
| 1671 | rc = devm_request_irq(&pdev->dev, |
| 1672 | gpio_to_irq(ctrl_pdata->disp_te_gpio), |
| 1673 | spi_panel_te_handler, IRQF_TRIGGER_RISING, |
| 1674 | "TE_GPIO", ctrl_pdata); |
| 1675 | if (rc) { |
| 1676 | pr_err("TE request_irq failed.\n"); |
| 1677 | return rc; |
| 1678 | } |
| 1679 | |
| 1680 | pr_debug("%s: spi panel initialized\n", __func__); |
| 1681 | return 0; |
| 1682 | |
| 1683 | error_pan_node: |
| 1684 | of_node_put(spi_pan_node); |
| 1685 | error_vreg: |
| 1686 | mdss_spi_put_dt_vreg_data(&pdev->dev, |
| 1687 | &ctrl_pdata->panel_power_data); |
| 1688 | error_no_mem: |
| 1689 | devm_kfree(&pdev->dev, ctrl_pdata); |
| 1690 | return rc; |
| 1691 | } |
| 1692 | |
| 1693 | |
| 1694 | static const struct of_device_id mdss_spi_panel_match[] = { |
| 1695 | { .compatible = "qcom,mdss-spi-display" }, |
| 1696 | {}, |
| 1697 | }; |
| 1698 | |
| 1699 | static struct platform_driver this_driver = { |
| 1700 | .probe = mdss_spi_panel_probe, |
| 1701 | .driver = { |
| 1702 | .name = "spi_panel", |
| 1703 | .owner = THIS_MODULE, |
| 1704 | .of_match_table = mdss_spi_panel_match, |
| 1705 | }, |
| 1706 | }; |
| 1707 | |
| 1708 | static int __init mdss_spi_display_init(void) |
| 1709 | { |
| 1710 | int ret; |
| 1711 | |
| 1712 | ret = platform_driver_register(&this_driver); |
| 1713 | return 0; |
| 1714 | } |
| 1715 | module_init(mdss_spi_display_init); |
| 1716 | |
| 1717 | MODULE_DEVICE_TABLE(of, mdss_spi_panel_match); |
| 1718 | MODULE_LICENSE("GPL v2"); |