Ajay Singh Parmar | 769215f | 2017-03-19 22:35:13 -0700 | [diff] [blame] | 1 | /* |
Narender Ankam | b6e39e5 | 2019-12-25 21:48:19 +0530 | [diff] [blame] | 2 | * Copyright (c) 2012-2019, The Linux Foundation. All rights reserved. |
Ajay Singh Parmar | 769215f | 2017-03-19 22:35:13 -0700 | [diff] [blame] | 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License version 2 and |
| 6 | * only version 2 as published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | */ |
| 14 | |
| 15 | #define pr_fmt(fmt) "[drm-dp] %s: " fmt, __func__ |
| 16 | |
| 17 | #include <linux/of_gpio.h> |
Tatenda Chipeperekwa | 8a77c8a | 2018-01-30 14:50:11 -0800 | [diff] [blame] | 18 | #include <linux/of_platform.h> |
Ajay Singh Parmar | 769215f | 2017-03-19 22:35:13 -0700 | [diff] [blame] | 19 | |
| 20 | #include "dp_parser.h" |
| 21 | |
| 22 | static void dp_parser_unmap_io_resources(struct dp_parser *parser) |
| 23 | { |
Samantha Tran | b6a5cd8 | 2018-02-01 14:47:16 -0800 | [diff] [blame] | 24 | int i = 0; |
Ajay Singh Parmar | 769215f | 2017-03-19 22:35:13 -0700 | [diff] [blame] | 25 | struct dp_io *io = &parser->io; |
| 26 | |
Samantha Tran | b6a5cd8 | 2018-02-01 14:47:16 -0800 | [diff] [blame] | 27 | for (i = 0; i < io->len; i++) |
| 28 | msm_dss_iounmap(&io->data[i].io); |
Ajay Singh Parmar | 769215f | 2017-03-19 22:35:13 -0700 | [diff] [blame] | 29 | } |
| 30 | |
Samantha Tran | b6a5cd8 | 2018-02-01 14:47:16 -0800 | [diff] [blame] | 31 | static int dp_parser_reg(struct dp_parser *parser) |
Ajay Singh Parmar | 769215f | 2017-03-19 22:35:13 -0700 | [diff] [blame] | 32 | { |
Samantha Tran | b6a5cd8 | 2018-02-01 14:47:16 -0800 | [diff] [blame] | 33 | int rc = 0, i = 0; |
| 34 | u32 reg_count; |
Ajay Singh Parmar | 769215f | 2017-03-19 22:35:13 -0700 | [diff] [blame] | 35 | struct platform_device *pdev = parser->pdev; |
Ajay Singh Parmar | 769215f | 2017-03-19 22:35:13 -0700 | [diff] [blame] | 36 | struct dp_io *io = &parser->io; |
Samantha Tran | b6a5cd8 | 2018-02-01 14:47:16 -0800 | [diff] [blame] | 37 | struct device *dev = &pdev->dev; |
Ajay Singh Parmar | 769215f | 2017-03-19 22:35:13 -0700 | [diff] [blame] | 38 | |
Samantha Tran | b6a5cd8 | 2018-02-01 14:47:16 -0800 | [diff] [blame] | 39 | reg_count = of_property_count_strings(dev->of_node, "reg-names"); |
| 40 | if (reg_count <= 0) { |
| 41 | pr_err("no reg defined\n"); |
| 42 | return -EINVAL; |
Ajay Singh Parmar | 769215f | 2017-03-19 22:35:13 -0700 | [diff] [blame] | 43 | } |
| 44 | |
Samantha Tran | b6a5cd8 | 2018-02-01 14:47:16 -0800 | [diff] [blame] | 45 | io->len = reg_count; |
| 46 | io->data = devm_kzalloc(dev, sizeof(struct dp_io_data) * reg_count, |
| 47 | GFP_KERNEL); |
| 48 | if (!io->data) |
| 49 | return -ENOMEM; |
| 50 | |
| 51 | for (i = 0; i < reg_count; i++) { |
| 52 | of_property_read_string_index(dev->of_node, |
| 53 | "reg-names", i, &io->data[i].name); |
| 54 | rc = msm_dss_ioremap_byname(pdev, &io->data[i].io, |
| 55 | io->data[i].name); |
| 56 | if (rc) { |
| 57 | pr_err("unable to remap %s resources\n", |
| 58 | io->data[i].name); |
| 59 | goto err; |
| 60 | } |
Samantha Tran | 45c3e5c | 2017-10-19 12:51:09 -0700 | [diff] [blame] | 61 | } |
| 62 | |
Ajay Singh Parmar | 769215f | 2017-03-19 22:35:13 -0700 | [diff] [blame] | 63 | return 0; |
| 64 | err: |
| 65 | dp_parser_unmap_io_resources(parser); |
| 66 | return rc; |
| 67 | } |
| 68 | |
Padmanabhan Komanduru | 20a21db | 2017-07-10 16:58:59 +0530 | [diff] [blame] | 69 | static const char *dp_get_phy_aux_config_property(u32 cfg_type) |
| 70 | { |
| 71 | switch (cfg_type) { |
| 72 | case PHY_AUX_CFG0: |
| 73 | return "qcom,aux-cfg0-settings"; |
| 74 | case PHY_AUX_CFG1: |
| 75 | return "qcom,aux-cfg1-settings"; |
| 76 | case PHY_AUX_CFG2: |
| 77 | return "qcom,aux-cfg2-settings"; |
| 78 | case PHY_AUX_CFG3: |
| 79 | return "qcom,aux-cfg3-settings"; |
| 80 | case PHY_AUX_CFG4: |
| 81 | return "qcom,aux-cfg4-settings"; |
| 82 | case PHY_AUX_CFG5: |
| 83 | return "qcom,aux-cfg5-settings"; |
| 84 | case PHY_AUX_CFG6: |
| 85 | return "qcom,aux-cfg6-settings"; |
| 86 | case PHY_AUX_CFG7: |
| 87 | return "qcom,aux-cfg7-settings"; |
| 88 | case PHY_AUX_CFG8: |
| 89 | return "qcom,aux-cfg8-settings"; |
| 90 | case PHY_AUX_CFG9: |
| 91 | return "qcom,aux-cfg9-settings"; |
| 92 | default: |
| 93 | return "unknown"; |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | static void dp_parser_phy_aux_cfg_reset(struct dp_parser *parser) |
| 98 | { |
| 99 | int i = 0; |
| 100 | |
| 101 | for (i = 0; i < PHY_AUX_CFG_MAX; i++) |
| 102 | parser->aux_cfg[i] = (const struct dp_aux_cfg){ 0 }; |
| 103 | } |
| 104 | |
Ajay Singh Parmar | 769215f | 2017-03-19 22:35:13 -0700 | [diff] [blame] | 105 | static int dp_parser_aux(struct dp_parser *parser) |
| 106 | { |
Ajay Singh Parmar | 769215f | 2017-03-19 22:35:13 -0700 | [diff] [blame] | 107 | struct device_node *of_node = parser->pdev->dev.of_node; |
Padmanabhan Komanduru | 20a21db | 2017-07-10 16:58:59 +0530 | [diff] [blame] | 108 | int len = 0, i = 0, j = 0, config_count = 0; |
Ajay Singh Parmar | 769215f | 2017-03-19 22:35:13 -0700 | [diff] [blame] | 109 | const char *data; |
Padmanabhan Komanduru | 20a21db | 2017-07-10 16:58:59 +0530 | [diff] [blame] | 110 | int const minimum_config_count = 1; |
Ajay Singh Parmar | 769215f | 2017-03-19 22:35:13 -0700 | [diff] [blame] | 111 | |
Padmanabhan Komanduru | 20a21db | 2017-07-10 16:58:59 +0530 | [diff] [blame] | 112 | for (i = 0; i < PHY_AUX_CFG_MAX; i++) { |
| 113 | const char *property = dp_get_phy_aux_config_property(i); |
| 114 | |
| 115 | data = of_get_property(of_node, property, &len); |
| 116 | if (!data) { |
| 117 | pr_err("Unable to read %s\n", property); |
| 118 | goto error; |
| 119 | } |
| 120 | |
| 121 | config_count = len - 1; |
| 122 | if ((config_count < minimum_config_count) || |
| 123 | (config_count > DP_AUX_CFG_MAX_VALUE_CNT)) { |
| 124 | pr_err("Invalid config count (%d) configs for %s\n", |
| 125 | config_count, property); |
| 126 | goto error; |
| 127 | } |
| 128 | |
| 129 | parser->aux_cfg[i].offset = data[0]; |
| 130 | parser->aux_cfg[i].cfg_cnt = config_count; |
| 131 | pr_debug("%s offset=0x%x, cfg_cnt=%d\n", |
| 132 | property, |
| 133 | parser->aux_cfg[i].offset, |
| 134 | parser->aux_cfg[i].cfg_cnt); |
| 135 | for (j = 1; j < len; j++) { |
| 136 | parser->aux_cfg[i].lut[j - 1] = data[j]; |
| 137 | pr_debug("%s lut[%d]=0x%x\n", |
| 138 | property, |
| 139 | i, |
| 140 | parser->aux_cfg[i].lut[j - 1]); |
| 141 | } |
Ajay Singh Parmar | 769215f | 2017-03-19 22:35:13 -0700 | [diff] [blame] | 142 | } |
Padmanabhan Komanduru | 20a21db | 2017-07-10 16:58:59 +0530 | [diff] [blame] | 143 | return 0; |
Ajay Singh Parmar | 769215f | 2017-03-19 22:35:13 -0700 | [diff] [blame] | 144 | |
Padmanabhan Komanduru | 20a21db | 2017-07-10 16:58:59 +0530 | [diff] [blame] | 145 | error: |
| 146 | dp_parser_phy_aux_cfg_reset(parser); |
| 147 | return -EINVAL; |
Ajay Singh Parmar | 769215f | 2017-03-19 22:35:13 -0700 | [diff] [blame] | 148 | } |
| 149 | |
| 150 | static int dp_parser_misc(struct dp_parser *parser) |
| 151 | { |
| 152 | int rc = 0; |
| 153 | struct device_node *of_node = parser->pdev->dev.of_node; |
| 154 | |
| 155 | rc = of_property_read_u32(of_node, |
| 156 | "qcom,max-pclk-frequency-khz", &parser->max_pclk_khz); |
| 157 | if (rc) |
| 158 | parser->max_pclk_khz = DP_MAX_PIXEL_CLK_KHZ; |
| 159 | |
Narender Ankam | b6e39e5 | 2019-12-25 21:48:19 +0530 | [diff] [blame] | 160 | parser->yuv_support = of_property_read_bool(of_node, |
| 161 | "qcom,yuv-support"); |
| 162 | |
Narender Ankam | 96d7054 | 2019-12-12 14:42:59 +0530 | [diff] [blame^] | 163 | parser->display_type = of_get_property(of_node, |
| 164 | "qcom,display-type", NULL); |
| 165 | if (!parser->display_type) |
| 166 | parser->display_type = "unknown"; |
| 167 | |
Ajay Singh Parmar | 769215f | 2017-03-19 22:35:13 -0700 | [diff] [blame] | 168 | return 0; |
| 169 | } |
| 170 | |
Tatenda Chipeperekwa | 8a77c8a | 2018-01-30 14:50:11 -0800 | [diff] [blame] | 171 | static int dp_parser_msm_hdcp_dev(struct dp_parser *parser) |
| 172 | { |
| 173 | struct device_node *node; |
| 174 | struct platform_device *pdev; |
| 175 | |
| 176 | node = of_find_compatible_node(NULL, NULL, "qcom,msm-hdcp"); |
| 177 | if (!node) { |
| 178 | // This is a non-fatal error, module initialization can proceed |
| 179 | pr_warn("couldn't find msm-hdcp node\n"); |
| 180 | return 0; |
| 181 | } |
| 182 | |
| 183 | pdev = of_find_device_by_node(node); |
| 184 | if (!pdev) { |
| 185 | // This is a non-fatal error, module initialization can proceed |
| 186 | pr_warn("couldn't find msm-hdcp pdev\n"); |
| 187 | return 0; |
| 188 | } |
| 189 | |
| 190 | parser->msm_hdcp_dev = &pdev->dev; |
| 191 | |
| 192 | return 0; |
| 193 | } |
| 194 | |
Ajay Singh Parmar | 769215f | 2017-03-19 22:35:13 -0700 | [diff] [blame] | 195 | static int dp_parser_pinctrl(struct dp_parser *parser) |
| 196 | { |
| 197 | int rc = 0; |
| 198 | struct dp_pinctrl *pinctrl = &parser->pinctrl; |
| 199 | |
| 200 | pinctrl->pin = devm_pinctrl_get(&parser->pdev->dev); |
| 201 | |
| 202 | if (IS_ERR_OR_NULL(pinctrl->pin)) { |
| 203 | rc = PTR_ERR(pinctrl->pin); |
| 204 | pr_err("failed to get pinctrl, rc=%d\n", rc); |
| 205 | goto error; |
| 206 | } |
| 207 | |
| 208 | pinctrl->state_active = pinctrl_lookup_state(pinctrl->pin, |
| 209 | "mdss_dp_active"); |
| 210 | if (IS_ERR_OR_NULL(pinctrl->state_active)) { |
| 211 | rc = PTR_ERR(pinctrl->state_active); |
| 212 | pr_err("failed to get pinctrl active state, rc=%d\n", rc); |
| 213 | goto error; |
| 214 | } |
| 215 | |
| 216 | pinctrl->state_suspend = pinctrl_lookup_state(pinctrl->pin, |
| 217 | "mdss_dp_sleep"); |
| 218 | if (IS_ERR_OR_NULL(pinctrl->state_suspend)) { |
| 219 | rc = PTR_ERR(pinctrl->state_suspend); |
| 220 | pr_err("failed to get pinctrl suspend state, rc=%d\n", rc); |
| 221 | goto error; |
| 222 | } |
| 223 | error: |
| 224 | return rc; |
| 225 | } |
| 226 | |
| 227 | static int dp_parser_gpio(struct dp_parser *parser) |
| 228 | { |
| 229 | int i = 0; |
| 230 | struct device *dev = &parser->pdev->dev; |
| 231 | struct device_node *of_node = dev->of_node; |
| 232 | struct dss_module_power *mp = &parser->mp[DP_CORE_PM]; |
| 233 | static const char * const dp_gpios[] = { |
| 234 | "qcom,aux-en-gpio", |
| 235 | "qcom,aux-sel-gpio", |
| 236 | "qcom,usbplug-cc-gpio", |
| 237 | }; |
| 238 | |
| 239 | mp->gpio_config = devm_kzalloc(dev, |
| 240 | sizeof(struct dss_gpio) * ARRAY_SIZE(dp_gpios), GFP_KERNEL); |
Samantha Tran | f4259fd | 2017-09-28 16:42:12 -0700 | [diff] [blame] | 241 | if (!mp->gpio_config) |
| 242 | return -ENOMEM; |
| 243 | |
Ajay Singh Parmar | 769215f | 2017-03-19 22:35:13 -0700 | [diff] [blame] | 244 | mp->num_gpio = ARRAY_SIZE(dp_gpios); |
| 245 | |
| 246 | for (i = 0; i < ARRAY_SIZE(dp_gpios); i++) { |
| 247 | mp->gpio_config[i].gpio = of_get_named_gpio(of_node, |
| 248 | dp_gpios[i], 0); |
| 249 | |
| 250 | if (!gpio_is_valid(mp->gpio_config[i].gpio)) { |
| 251 | pr_err("%s gpio not specified\n", dp_gpios[i]); |
| 252 | return -EINVAL; |
| 253 | } |
| 254 | |
| 255 | strlcpy(mp->gpio_config[i].gpio_name, dp_gpios[i], |
| 256 | sizeof(mp->gpio_config[i].gpio_name)); |
| 257 | |
| 258 | mp->gpio_config[i].value = 0; |
| 259 | } |
| 260 | |
| 261 | return 0; |
| 262 | } |
| 263 | |
| 264 | static const char *dp_parser_supply_node_name(enum dp_pm_type module) |
| 265 | { |
| 266 | switch (module) { |
| 267 | case DP_CORE_PM: return "qcom,core-supply-entries"; |
| 268 | case DP_CTRL_PM: return "qcom,ctrl-supply-entries"; |
| 269 | case DP_PHY_PM: return "qcom,phy-supply-entries"; |
| 270 | default: return "???"; |
| 271 | } |
| 272 | } |
| 273 | |
| 274 | static int dp_parser_get_vreg(struct dp_parser *parser, |
| 275 | enum dp_pm_type module) |
| 276 | { |
| 277 | int i = 0, rc = 0; |
| 278 | u32 tmp = 0; |
| 279 | const char *pm_supply_name = NULL; |
| 280 | struct device_node *supply_node = NULL; |
| 281 | struct device_node *of_node = parser->pdev->dev.of_node; |
| 282 | struct device_node *supply_root_node = NULL; |
| 283 | struct dss_module_power *mp = &parser->mp[module]; |
| 284 | |
| 285 | mp->num_vreg = 0; |
| 286 | pm_supply_name = dp_parser_supply_node_name(module); |
| 287 | supply_root_node = of_get_child_by_name(of_node, pm_supply_name); |
| 288 | if (!supply_root_node) { |
| 289 | pr_err("no supply entry present: %s\n", pm_supply_name); |
| 290 | goto novreg; |
| 291 | } |
| 292 | |
| 293 | mp->num_vreg = of_get_available_child_count(supply_root_node); |
| 294 | |
| 295 | if (mp->num_vreg == 0) { |
| 296 | pr_debug("no vreg\n"); |
| 297 | goto novreg; |
| 298 | } else { |
| 299 | pr_debug("vreg found. count=%d\n", mp->num_vreg); |
| 300 | } |
| 301 | |
| 302 | mp->vreg_config = devm_kzalloc(&parser->pdev->dev, |
| 303 | sizeof(struct dss_vreg) * mp->num_vreg, GFP_KERNEL); |
| 304 | if (!mp->vreg_config) { |
| 305 | rc = -ENOMEM; |
| 306 | goto error; |
| 307 | } |
| 308 | |
| 309 | for_each_child_of_node(supply_root_node, supply_node) { |
| 310 | const char *st = NULL; |
| 311 | /* vreg-name */ |
| 312 | rc = of_property_read_string(supply_node, |
| 313 | "qcom,supply-name", &st); |
| 314 | if (rc) { |
| 315 | pr_err("error reading name. rc=%d\n", |
| 316 | rc); |
| 317 | goto error; |
| 318 | } |
| 319 | snprintf(mp->vreg_config[i].vreg_name, |
| 320 | ARRAY_SIZE((mp->vreg_config[i].vreg_name)), "%s", st); |
| 321 | /* vreg-min-voltage */ |
| 322 | rc = of_property_read_u32(supply_node, |
| 323 | "qcom,supply-min-voltage", &tmp); |
| 324 | if (rc) { |
| 325 | pr_err("error reading min volt. rc=%d\n", |
| 326 | rc); |
| 327 | goto error; |
| 328 | } |
| 329 | mp->vreg_config[i].min_voltage = tmp; |
| 330 | |
| 331 | /* vreg-max-voltage */ |
| 332 | rc = of_property_read_u32(supply_node, |
| 333 | "qcom,supply-max-voltage", &tmp); |
| 334 | if (rc) { |
| 335 | pr_err("error reading max volt. rc=%d\n", |
| 336 | rc); |
| 337 | goto error; |
| 338 | } |
| 339 | mp->vreg_config[i].max_voltage = tmp; |
| 340 | |
| 341 | /* enable-load */ |
| 342 | rc = of_property_read_u32(supply_node, |
| 343 | "qcom,supply-enable-load", &tmp); |
| 344 | if (rc) { |
| 345 | pr_err("error reading enable load. rc=%d\n", |
| 346 | rc); |
| 347 | goto error; |
| 348 | } |
| 349 | mp->vreg_config[i].enable_load = tmp; |
| 350 | |
| 351 | /* disable-load */ |
| 352 | rc = of_property_read_u32(supply_node, |
| 353 | "qcom,supply-disable-load", &tmp); |
| 354 | if (rc) { |
| 355 | pr_err("error reading disable load. rc=%d\n", |
| 356 | rc); |
| 357 | goto error; |
| 358 | } |
| 359 | mp->vreg_config[i].disable_load = tmp; |
| 360 | |
| 361 | pr_debug("%s min=%d, max=%d, enable=%d, disable=%d\n", |
| 362 | mp->vreg_config[i].vreg_name, |
| 363 | mp->vreg_config[i].min_voltage, |
| 364 | mp->vreg_config[i].max_voltage, |
| 365 | mp->vreg_config[i].enable_load, |
| 366 | mp->vreg_config[i].disable_load |
| 367 | ); |
| 368 | ++i; |
| 369 | } |
| 370 | |
| 371 | return rc; |
| 372 | |
| 373 | error: |
| 374 | if (mp->vreg_config) { |
| 375 | devm_kfree(&parser->pdev->dev, mp->vreg_config); |
| 376 | mp->vreg_config = NULL; |
| 377 | } |
| 378 | novreg: |
| 379 | mp->num_vreg = 0; |
| 380 | |
| 381 | return rc; |
| 382 | } |
| 383 | |
| 384 | static void dp_parser_put_vreg_data(struct device *dev, |
| 385 | struct dss_module_power *mp) |
| 386 | { |
| 387 | if (!mp) { |
| 388 | DEV_ERR("invalid input\n"); |
| 389 | return; |
| 390 | } |
| 391 | |
| 392 | if (mp->vreg_config) { |
| 393 | devm_kfree(dev, mp->vreg_config); |
| 394 | mp->vreg_config = NULL; |
| 395 | } |
| 396 | mp->num_vreg = 0; |
| 397 | } |
| 398 | |
| 399 | static int dp_parser_regulator(struct dp_parser *parser) |
| 400 | { |
| 401 | int i, rc = 0; |
| 402 | struct platform_device *pdev = parser->pdev; |
| 403 | |
| 404 | /* Parse the regulator information */ |
| 405 | for (i = DP_CORE_PM; i < DP_MAX_PM; i++) { |
| 406 | rc = dp_parser_get_vreg(parser, i); |
| 407 | if (rc) { |
| 408 | pr_err("get_dt_vreg_data failed for %s. rc=%d\n", |
| 409 | dp_parser_pm_name(i), rc); |
| 410 | i--; |
| 411 | for (; i >= DP_CORE_PM; i--) |
| 412 | dp_parser_put_vreg_data(&pdev->dev, |
| 413 | &parser->mp[i]); |
| 414 | break; |
| 415 | } |
| 416 | } |
| 417 | |
| 418 | return rc; |
| 419 | } |
| 420 | |
| 421 | static bool dp_parser_check_prefix(const char *clk_prefix, const char *clk_name) |
| 422 | { |
| 423 | return !!strnstr(clk_name, clk_prefix, strlen(clk_name)); |
| 424 | } |
| 425 | |
| 426 | static void dp_parser_put_clk_data(struct device *dev, |
| 427 | struct dss_module_power *mp) |
| 428 | { |
| 429 | if (!mp) { |
| 430 | DEV_ERR("%s: invalid input\n", __func__); |
| 431 | return; |
| 432 | } |
| 433 | |
| 434 | if (mp->clk_config) { |
| 435 | devm_kfree(dev, mp->clk_config); |
| 436 | mp->clk_config = NULL; |
| 437 | } |
| 438 | |
| 439 | mp->num_clk = 0; |
| 440 | } |
| 441 | |
Tatenda Chipeperekwa | 2bc4487 | 2017-10-18 18:26:56 -0700 | [diff] [blame] | 442 | static void dp_parser_put_gpio_data(struct device *dev, |
| 443 | struct dss_module_power *mp) |
| 444 | { |
| 445 | if (!mp) { |
| 446 | DEV_ERR("%s: invalid input\n", __func__); |
| 447 | return; |
| 448 | } |
| 449 | |
| 450 | if (mp->gpio_config) { |
| 451 | devm_kfree(dev, mp->gpio_config); |
| 452 | mp->gpio_config = NULL; |
| 453 | } |
| 454 | |
| 455 | mp->num_gpio = 0; |
| 456 | } |
| 457 | |
Ajay Singh Parmar | 769215f | 2017-03-19 22:35:13 -0700 | [diff] [blame] | 458 | static int dp_parser_init_clk_data(struct dp_parser *parser) |
| 459 | { |
| 460 | int num_clk = 0, i = 0, rc = 0; |
| 461 | int core_clk_count = 0, ctrl_clk_count = 0; |
| 462 | const char *core_clk = "core"; |
| 463 | const char *ctrl_clk = "ctrl"; |
| 464 | const char *clk_name; |
| 465 | struct device *dev = &parser->pdev->dev; |
| 466 | struct dss_module_power *core_power = &parser->mp[DP_CORE_PM]; |
| 467 | struct dss_module_power *ctrl_power = &parser->mp[DP_CTRL_PM]; |
| 468 | |
| 469 | num_clk = of_property_count_strings(dev->of_node, "clock-names"); |
| 470 | if (num_clk <= 0) { |
| 471 | pr_err("no clocks are defined\n"); |
| 472 | rc = -EINVAL; |
| 473 | goto exit; |
| 474 | } |
| 475 | |
| 476 | for (i = 0; i < num_clk; i++) { |
| 477 | of_property_read_string_index(dev->of_node, |
| 478 | "clock-names", i, &clk_name); |
| 479 | |
| 480 | if (dp_parser_check_prefix(core_clk, clk_name)) |
| 481 | core_clk_count++; |
| 482 | |
| 483 | if (dp_parser_check_prefix(ctrl_clk, clk_name)) |
| 484 | ctrl_clk_count++; |
| 485 | } |
| 486 | |
| 487 | /* Initialize the CORE power module */ |
| 488 | if (core_clk_count <= 0) { |
| 489 | pr_err("no core clocks are defined\n"); |
| 490 | rc = -EINVAL; |
| 491 | goto exit; |
| 492 | } |
| 493 | |
| 494 | core_power->num_clk = core_clk_count; |
| 495 | core_power->clk_config = devm_kzalloc(dev, |
| 496 | sizeof(struct dss_clk) * core_power->num_clk, |
| 497 | GFP_KERNEL); |
| 498 | if (!core_power->clk_config) { |
| 499 | rc = -EINVAL; |
| 500 | goto exit; |
| 501 | } |
| 502 | |
| 503 | /* Initialize the CTRL power module */ |
| 504 | if (ctrl_clk_count <= 0) { |
| 505 | pr_err("no ctrl clocks are defined\n"); |
| 506 | rc = -EINVAL; |
| 507 | goto ctrl_clock_error; |
| 508 | } |
| 509 | |
| 510 | ctrl_power->num_clk = ctrl_clk_count; |
| 511 | ctrl_power->clk_config = devm_kzalloc(dev, |
| 512 | sizeof(struct dss_clk) * ctrl_power->num_clk, |
| 513 | GFP_KERNEL); |
| 514 | if (!ctrl_power->clk_config) { |
| 515 | ctrl_power->num_clk = 0; |
| 516 | rc = -EINVAL; |
| 517 | goto ctrl_clock_error; |
| 518 | } |
| 519 | |
| 520 | return rc; |
| 521 | |
| 522 | ctrl_clock_error: |
| 523 | dp_parser_put_clk_data(dev, core_power); |
| 524 | exit: |
| 525 | return rc; |
| 526 | } |
| 527 | |
| 528 | static int dp_parser_clock(struct dp_parser *parser) |
| 529 | { |
| 530 | int rc = 0, i = 0; |
| 531 | int num_clk = 0; |
| 532 | int core_clk_index = 0, ctrl_clk_index = 0; |
| 533 | int core_clk_count = 0, ctrl_clk_count = 0; |
| 534 | const char *clk_name; |
| 535 | const char *core_clk = "core"; |
| 536 | const char *ctrl_clk = "ctrl"; |
| 537 | struct device *dev = &parser->pdev->dev; |
| 538 | struct dss_module_power *core_power = &parser->mp[DP_CORE_PM]; |
| 539 | struct dss_module_power *ctrl_power = &parser->mp[DP_CTRL_PM]; |
| 540 | |
| 541 | core_power = &parser->mp[DP_CORE_PM]; |
| 542 | ctrl_power = &parser->mp[DP_CTRL_PM]; |
| 543 | |
| 544 | rc = dp_parser_init_clk_data(parser); |
| 545 | if (rc) { |
| 546 | pr_err("failed to initialize power data\n"); |
| 547 | rc = -EINVAL; |
| 548 | goto exit; |
| 549 | } |
| 550 | |
| 551 | core_clk_count = core_power->num_clk; |
| 552 | ctrl_clk_count = ctrl_power->num_clk; |
| 553 | |
| 554 | num_clk = core_clk_count + ctrl_clk_count; |
| 555 | |
| 556 | for (i = 0; i < num_clk; i++) { |
| 557 | of_property_read_string_index(dev->of_node, "clock-names", |
| 558 | i, &clk_name); |
| 559 | |
| 560 | if (dp_parser_check_prefix(core_clk, clk_name) && |
| 561 | core_clk_index < core_clk_count) { |
| 562 | struct dss_clk *clk = |
| 563 | &core_power->clk_config[core_clk_index]; |
| 564 | strlcpy(clk->clk_name, clk_name, sizeof(clk->clk_name)); |
| 565 | clk->type = DSS_CLK_AHB; |
| 566 | core_clk_index++; |
| 567 | } else if (dp_parser_check_prefix(ctrl_clk, clk_name) && |
| 568 | ctrl_clk_index < ctrl_clk_count) { |
| 569 | struct dss_clk *clk = |
| 570 | &ctrl_power->clk_config[ctrl_clk_index]; |
| 571 | strlcpy(clk->clk_name, clk_name, sizeof(clk->clk_name)); |
| 572 | ctrl_clk_index++; |
| 573 | |
| 574 | if (!strcmp(clk_name, "ctrl_link_clk") || |
Tatenda Chipeperekwa | c44d51b | 2017-06-16 17:12:00 -0700 | [diff] [blame] | 575 | !strcmp(clk_name, "ctrl_pixel_clk")) |
Ajay Singh Parmar | 769215f | 2017-03-19 22:35:13 -0700 | [diff] [blame] | 576 | clk->type = DSS_CLK_PCLK; |
| 577 | else |
| 578 | clk->type = DSS_CLK_AHB; |
| 579 | } |
| 580 | } |
| 581 | |
| 582 | pr_debug("clock parsing successful\n"); |
| 583 | |
| 584 | exit: |
| 585 | return rc; |
| 586 | } |
| 587 | |
| 588 | static int dp_parser_parse(struct dp_parser *parser) |
| 589 | { |
| 590 | int rc = 0; |
| 591 | |
| 592 | if (!parser) { |
| 593 | pr_err("invalid input\n"); |
| 594 | rc = -EINVAL; |
| 595 | goto err; |
| 596 | } |
| 597 | |
Samantha Tran | b6a5cd8 | 2018-02-01 14:47:16 -0800 | [diff] [blame] | 598 | rc = dp_parser_reg(parser); |
Ajay Singh Parmar | 769215f | 2017-03-19 22:35:13 -0700 | [diff] [blame] | 599 | if (rc) |
| 600 | goto err; |
| 601 | |
| 602 | rc = dp_parser_aux(parser); |
| 603 | if (rc) |
| 604 | goto err; |
| 605 | |
| 606 | rc = dp_parser_misc(parser); |
| 607 | if (rc) |
| 608 | goto err; |
| 609 | |
| 610 | rc = dp_parser_clock(parser); |
| 611 | if (rc) |
| 612 | goto err; |
| 613 | |
| 614 | rc = dp_parser_regulator(parser); |
| 615 | if (rc) |
| 616 | goto err; |
| 617 | |
| 618 | rc = dp_parser_gpio(parser); |
| 619 | if (rc) |
| 620 | goto err; |
| 621 | |
| 622 | rc = dp_parser_pinctrl(parser); |
Tatenda Chipeperekwa | 8a77c8a | 2018-01-30 14:50:11 -0800 | [diff] [blame] | 623 | if (rc) |
| 624 | goto err; |
| 625 | |
| 626 | rc = dp_parser_msm_hdcp_dev(parser); |
Ajay Singh Parmar | 769215f | 2017-03-19 22:35:13 -0700 | [diff] [blame] | 627 | err: |
| 628 | return rc; |
| 629 | } |
| 630 | |
Samantha Tran | b6a5cd8 | 2018-02-01 14:47:16 -0800 | [diff] [blame] | 631 | static struct dp_io_data *dp_parser_get_io(struct dp_parser *dp_parser, |
| 632 | char *name) |
| 633 | { |
| 634 | int i = 0; |
| 635 | struct dp_io *io; |
| 636 | |
| 637 | if (!dp_parser) { |
| 638 | pr_err("invalid input\n"); |
| 639 | goto err; |
| 640 | } |
| 641 | |
| 642 | io = &dp_parser->io; |
| 643 | |
| 644 | for (i = 0; i < io->len; i++) { |
| 645 | struct dp_io_data *data = &io->data[i]; |
| 646 | |
| 647 | if (!strcmp(data->name, name)) |
| 648 | return data; |
| 649 | } |
| 650 | err: |
| 651 | return NULL; |
| 652 | } |
| 653 | |
| 654 | static void dp_parser_get_io_buf(struct dp_parser *dp_parser, char *name) |
| 655 | { |
| 656 | int i = 0; |
| 657 | struct dp_io *io; |
| 658 | |
| 659 | if (!dp_parser) { |
| 660 | pr_err("invalid input\n"); |
| 661 | return; |
| 662 | } |
| 663 | |
| 664 | io = &dp_parser->io; |
| 665 | |
| 666 | for (i = 0; i < io->len; i++) { |
| 667 | struct dp_io_data *data = &io->data[i]; |
| 668 | |
| 669 | if (!strcmp(data->name, name)) { |
| 670 | if (!data->buf) |
| 671 | data->buf = devm_kzalloc(&dp_parser->pdev->dev, |
| 672 | data->io.len, GFP_KERNEL); |
| 673 | } |
| 674 | } |
| 675 | } |
| 676 | |
| 677 | static void dp_parser_clear_io_buf(struct dp_parser *dp_parser) |
| 678 | { |
| 679 | int i = 0; |
| 680 | struct dp_io *io; |
| 681 | |
| 682 | if (!dp_parser) { |
| 683 | pr_err("invalid input\n"); |
| 684 | return; |
| 685 | } |
| 686 | |
| 687 | io = &dp_parser->io; |
| 688 | |
| 689 | for (i = 0; i < io->len; i++) { |
| 690 | struct dp_io_data *data = &io->data[i]; |
| 691 | |
| 692 | if (data->buf) |
| 693 | devm_kfree(&dp_parser->pdev->dev, data->buf); |
| 694 | |
| 695 | data->buf = NULL; |
| 696 | } |
| 697 | } |
| 698 | |
Ajay Singh Parmar | 769215f | 2017-03-19 22:35:13 -0700 | [diff] [blame] | 699 | struct dp_parser *dp_parser_get(struct platform_device *pdev) |
| 700 | { |
| 701 | struct dp_parser *parser; |
| 702 | |
| 703 | parser = devm_kzalloc(&pdev->dev, sizeof(*parser), GFP_KERNEL); |
| 704 | if (!parser) |
| 705 | return ERR_PTR(-ENOMEM); |
| 706 | |
| 707 | parser->parse = dp_parser_parse; |
Samantha Tran | b6a5cd8 | 2018-02-01 14:47:16 -0800 | [diff] [blame] | 708 | parser->get_io = dp_parser_get_io; |
| 709 | parser->get_io_buf = dp_parser_get_io_buf; |
| 710 | parser->clear_io_buf = dp_parser_clear_io_buf; |
Ajay Singh Parmar | 769215f | 2017-03-19 22:35:13 -0700 | [diff] [blame] | 711 | parser->pdev = pdev; |
| 712 | |
| 713 | return parser; |
| 714 | } |
| 715 | |
| 716 | void dp_parser_put(struct dp_parser *parser) |
| 717 | { |
| 718 | int i = 0; |
| 719 | struct dss_module_power *power = NULL; |
| 720 | |
| 721 | if (!parser) { |
| 722 | pr_err("invalid parser module\n"); |
| 723 | return; |
| 724 | } |
| 725 | |
| 726 | power = parser->mp; |
| 727 | |
| 728 | for (i = 0; i < DP_MAX_PM; i++) { |
Tatenda Chipeperekwa | 2bc4487 | 2017-10-18 18:26:56 -0700 | [diff] [blame] | 729 | dp_parser_put_clk_data(&parser->pdev->dev, &power[i]); |
| 730 | dp_parser_put_vreg_data(&parser->pdev->dev, &power[i]); |
| 731 | dp_parser_put_gpio_data(&parser->pdev->dev, &power[i]); |
Ajay Singh Parmar | 769215f | 2017-03-19 22:35:13 -0700 | [diff] [blame] | 732 | } |
| 733 | |
Samantha Tran | b6a5cd8 | 2018-02-01 14:47:16 -0800 | [diff] [blame] | 734 | dp_parser_clear_io_buf(parser); |
| 735 | devm_kfree(&parser->pdev->dev, parser->io.data); |
Ajay Singh Parmar | 769215f | 2017-03-19 22:35:13 -0700 | [diff] [blame] | 736 | devm_kfree(&parser->pdev->dev, parser); |
| 737 | } |