Banajit Goswami | de8271c | 2017-01-18 00:28:59 -0800 | [diff] [blame^] | 1 | /* Copyright (c) 2015-2016, 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 | #include <linux/kernel.h> |
| 14 | #include <linux/init.h> |
| 15 | #include <linux/err.h> |
| 16 | #include <linux/module.h> |
| 17 | #include <linux/of.h> |
| 18 | #include <linux/clk.h> |
| 19 | #include <linux/clk-provider.h> |
| 20 | #include "../../../drivers/clk/qcom/common.h" |
| 21 | #include <linux/platform_device.h> |
| 22 | #include <linux/gpio.h> |
| 23 | #include <linux/of_gpio.h> |
| 24 | #include <dt-bindings/clock/audio-ext-clk.h> |
| 25 | #include <sound/q6afe-v2.h> |
| 26 | |
| 27 | enum audio_clk_mux { |
| 28 | AP_CLK2, |
| 29 | LPASS_MCLK, |
| 30 | LPASS_MCLK2, |
| 31 | }; |
| 32 | |
| 33 | struct pinctrl_info { |
| 34 | struct pinctrl *pinctrl; |
| 35 | struct pinctrl_state *sleep; |
| 36 | struct pinctrl_state *active; |
| 37 | }; |
| 38 | |
| 39 | struct audio_ext_ap_clk { |
| 40 | bool enabled; |
| 41 | int gpio; |
| 42 | struct clk_fixed_factor fact; |
| 43 | }; |
| 44 | |
| 45 | struct audio_ext_pmi_clk { |
| 46 | int gpio; |
| 47 | struct clk_fixed_factor fact; |
| 48 | }; |
| 49 | |
| 50 | struct audio_ext_ap_clk2 { |
| 51 | bool enabled; |
| 52 | struct pinctrl_info pnctrl_info; |
| 53 | struct clk_fixed_factor fact; |
| 54 | }; |
| 55 | |
| 56 | struct audio_ext_lpass_mclk { |
| 57 | struct pinctrl_info pnctrl_info; |
| 58 | struct clk_fixed_factor fact; |
| 59 | }; |
| 60 | |
| 61 | static struct afe_clk_set clk2_config = { |
| 62 | Q6AFE_LPASS_CLK_CONFIG_API_VERSION, |
| 63 | Q6AFE_LPASS_CLK_ID_SPEAKER_I2S_OSR, |
| 64 | Q6AFE_LPASS_IBIT_CLK_11_P2896_MHZ, |
| 65 | Q6AFE_LPASS_CLK_ATTRIBUTE_COUPLE_NO, |
| 66 | Q6AFE_LPASS_CLK_ROOT_DEFAULT, |
| 67 | 0, |
| 68 | }; |
| 69 | |
| 70 | static struct afe_clk_set lpass_default = { |
| 71 | Q6AFE_LPASS_CLK_CONFIG_API_VERSION, |
| 72 | Q6AFE_LPASS_CLK_ID_SPEAKER_I2S_OSR, |
| 73 | Q6AFE_LPASS_IBIT_CLK_11_P2896_MHZ, |
| 74 | Q6AFE_LPASS_CLK_ATTRIBUTE_COUPLE_NO, |
| 75 | Q6AFE_LPASS_CLK_ROOT_DEFAULT, |
| 76 | 0, |
| 77 | }; |
| 78 | |
| 79 | static struct afe_clk_set lpass_mclk = { |
| 80 | Q6AFE_LPASS_CLK_CONFIG_API_VERSION, |
| 81 | Q6AFE_LPASS_CLK_ID_MCLK_1, |
| 82 | Q6AFE_LPASS_OSR_CLK_11_P2896_MHZ, |
| 83 | Q6AFE_LPASS_CLK_ATTRIBUTE_COUPLE_NO, |
| 84 | Q6AFE_LPASS_CLK_ROOT_DEFAULT, |
| 85 | 0, |
| 86 | }; |
| 87 | |
| 88 | static inline struct audio_ext_ap_clk *to_audio_ap_clk(struct clk_hw *hw) |
| 89 | { |
| 90 | return container_of(hw, struct audio_ext_ap_clk, fact.hw); |
| 91 | } |
| 92 | |
| 93 | static int audio_ext_clk_prepare(struct clk_hw *hw) |
| 94 | { |
| 95 | struct audio_ext_ap_clk *audio_clk = to_audio_ap_clk(hw); |
| 96 | |
| 97 | pr_debug("%s: gpio: %d\n", __func__, audio_clk->gpio); |
| 98 | if (gpio_is_valid(audio_clk->gpio)) |
| 99 | return gpio_direction_output(audio_clk->gpio, 1); |
| 100 | return 0; |
| 101 | } |
| 102 | |
| 103 | static void audio_ext_clk_unprepare(struct clk_hw *hw) |
| 104 | { |
| 105 | struct audio_ext_ap_clk *audio_clk = to_audio_ap_clk(hw); |
| 106 | |
| 107 | pr_debug("%s: gpio: %d\n", __func__, audio_clk->gpio); |
| 108 | if (gpio_is_valid(audio_clk->gpio)) |
| 109 | gpio_direction_output(audio_clk->gpio, 0); |
| 110 | } |
| 111 | |
| 112 | static inline struct audio_ext_ap_clk2 *to_audio_ap_clk2(struct clk_hw *hw) |
| 113 | { |
| 114 | return container_of(hw, struct audio_ext_ap_clk2, fact.hw); |
| 115 | } |
| 116 | |
| 117 | static int audio_ext_clk2_prepare(struct clk_hw *hw) |
| 118 | { |
| 119 | struct audio_ext_ap_clk2 *audio_clk2 = to_audio_ap_clk2(hw); |
| 120 | struct pinctrl_info *pnctrl_info = &audio_clk2->pnctrl_info; |
| 121 | int ret; |
| 122 | |
| 123 | |
| 124 | if (!pnctrl_info->pinctrl || !pnctrl_info->active) |
| 125 | return 0; |
| 126 | |
| 127 | ret = pinctrl_select_state(pnctrl_info->pinctrl, |
| 128 | pnctrl_info->active); |
| 129 | if (ret) { |
| 130 | pr_err("%s: active state select failed with %d\n", |
| 131 | __func__, ret); |
| 132 | return -EIO; |
| 133 | } |
| 134 | |
| 135 | clk2_config.enable = 1; |
| 136 | ret = afe_set_lpass_clk_cfg(IDX_RSVD_3, &clk2_config); |
| 137 | if (ret < 0) { |
| 138 | pr_err("%s: failed to set clock, ret = %d\n", __func__, ret); |
| 139 | return -EINVAL; |
| 140 | } |
| 141 | |
| 142 | return 0; |
| 143 | } |
| 144 | |
| 145 | static void audio_ext_clk2_unprepare(struct clk_hw *hw) |
| 146 | { |
| 147 | struct audio_ext_ap_clk2 *audio_clk2 = to_audio_ap_clk2(hw); |
| 148 | struct pinctrl_info *pnctrl_info = &audio_clk2->pnctrl_info; |
| 149 | int ret; |
| 150 | |
| 151 | if (!pnctrl_info->pinctrl || !pnctrl_info->sleep) |
| 152 | return; |
| 153 | |
| 154 | ret = pinctrl_select_state(pnctrl_info->pinctrl, |
| 155 | pnctrl_info->sleep); |
| 156 | if (ret) |
| 157 | pr_err("%s: sleep state select failed with %d\n", |
| 158 | __func__, ret); |
| 159 | |
| 160 | clk2_config.enable = 0; |
| 161 | ret = afe_set_lpass_clk_cfg(IDX_RSVD_3, &clk2_config); |
| 162 | if (ret < 0) |
| 163 | pr_err("%s: failed to reset clock, ret = %d\n", __func__, ret); |
| 164 | } |
| 165 | |
| 166 | static inline struct audio_ext_lpass_mclk *to_audio_lpass_mclk( |
| 167 | struct clk_hw *hw) |
| 168 | { |
| 169 | return container_of(hw, struct audio_ext_lpass_mclk, fact.hw); |
| 170 | } |
| 171 | |
| 172 | static int audio_ext_lpass_mclk_prepare(struct clk_hw *hw) |
| 173 | { |
| 174 | struct audio_ext_lpass_mclk *audio_lpass_mclk = to_audio_lpass_mclk(hw); |
| 175 | struct pinctrl_info *pnctrl_info = &audio_lpass_mclk->pnctrl_info; |
| 176 | int ret; |
| 177 | |
| 178 | if (pnctrl_info->pinctrl) { |
| 179 | ret = pinctrl_select_state(pnctrl_info->pinctrl, |
| 180 | pnctrl_info->active); |
| 181 | if (ret) { |
| 182 | pr_err("%s: active state select failed with %d\n", |
| 183 | __func__, ret); |
| 184 | return -EIO; |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | lpass_mclk.enable = 1; |
| 189 | ret = afe_set_lpass_clock_v2(AFE_PORT_ID_PRIMARY_MI2S_RX, |
| 190 | &lpass_mclk); |
| 191 | if (ret < 0) { |
| 192 | pr_err("%s afe_set_digital_codec_core_clock failed\n", |
| 193 | __func__); |
| 194 | return ret; |
| 195 | } |
| 196 | |
| 197 | return 0; |
| 198 | } |
| 199 | |
| 200 | static void audio_ext_lpass_mclk_unprepare(struct clk_hw *hw) |
| 201 | { |
| 202 | struct audio_ext_lpass_mclk *audio_lpass_mclk = to_audio_lpass_mclk(hw); |
| 203 | struct pinctrl_info *pnctrl_info = &audio_lpass_mclk->pnctrl_info; |
| 204 | int ret; |
| 205 | |
| 206 | if (pnctrl_info->pinctrl) { |
| 207 | ret = pinctrl_select_state(pnctrl_info->pinctrl, |
| 208 | pnctrl_info->sleep); |
| 209 | if (ret) { |
| 210 | pr_err("%s: active state select failed with %d\n", |
| 211 | __func__, ret); |
| 212 | return; |
| 213 | } |
| 214 | } |
| 215 | |
| 216 | lpass_mclk.enable = 0; |
| 217 | ret = afe_set_lpass_clock_v2(AFE_PORT_ID_PRIMARY_MI2S_RX, |
| 218 | &lpass_mclk); |
| 219 | if (ret < 0) |
| 220 | pr_err("%s: afe_set_digital_codec_core_clock failed, ret = %d\n", |
| 221 | __func__, ret); |
| 222 | } |
| 223 | |
| 224 | static int audio_ext_lpass_mclk2_prepare(struct clk_hw *hw) |
| 225 | { |
| 226 | struct audio_ext_lpass_mclk *audio_lpass_mclk2 = |
| 227 | to_audio_lpass_mclk(hw); |
| 228 | struct pinctrl_info *pnctrl_info = &audio_lpass_mclk2->pnctrl_info; |
| 229 | int ret; |
| 230 | |
| 231 | if (pnctrl_info->pinctrl) { |
| 232 | ret = pinctrl_select_state(pnctrl_info->pinctrl, |
| 233 | pnctrl_info->active); |
| 234 | if (ret) { |
| 235 | pr_err("%s: active state select failed with %d\n", |
| 236 | __func__, ret); |
| 237 | return -EIO; |
| 238 | } |
| 239 | } |
| 240 | |
| 241 | lpass_default.enable = 1; |
| 242 | ret = afe_set_lpass_clk_cfg(IDX_RSVD_3, &lpass_default); |
| 243 | if (ret < 0) { |
| 244 | pr_err("%s: failed to set clock, ret = %d\n", __func__, ret); |
| 245 | return -EINVAL; |
| 246 | } |
| 247 | |
| 248 | return 0; |
| 249 | } |
| 250 | |
| 251 | static void audio_ext_lpass_mclk2_unprepare(struct clk_hw *hw) |
| 252 | { |
| 253 | struct audio_ext_lpass_mclk *audio_lpass_mclk2 = |
| 254 | to_audio_lpass_mclk(hw); |
| 255 | struct pinctrl_info *pnctrl_info = &audio_lpass_mclk2->pnctrl_info; |
| 256 | int ret; |
| 257 | |
| 258 | if (pnctrl_info->pinctrl) { |
| 259 | ret = pinctrl_select_state(pnctrl_info->pinctrl, |
| 260 | pnctrl_info->sleep); |
| 261 | if (ret) |
| 262 | pr_err("%s: sleep state select failed with %d\n", |
| 263 | __func__, ret); |
| 264 | } |
| 265 | |
| 266 | lpass_default.enable = 0; |
| 267 | ret = afe_set_lpass_clk_cfg(IDX_RSVD_3, &lpass_default); |
| 268 | if (ret < 0) |
| 269 | pr_err("%s: failed to reset clock, ret = %d\n", __func__, ret); |
| 270 | } |
| 271 | |
| 272 | static const struct clk_ops audio_ext_ap_clk_ops = { |
| 273 | .prepare = audio_ext_clk_prepare, |
| 274 | .unprepare = audio_ext_clk_unprepare, |
| 275 | }; |
| 276 | |
| 277 | static const struct clk_ops audio_ext_ap_clk2_ops = { |
| 278 | .prepare = audio_ext_clk2_prepare, |
| 279 | .unprepare = audio_ext_clk2_unprepare, |
| 280 | }; |
| 281 | |
| 282 | static const struct clk_ops audio_ext_lpass_mclk_ops = { |
| 283 | .prepare = audio_ext_lpass_mclk_prepare, |
| 284 | .unprepare = audio_ext_lpass_mclk_unprepare, |
| 285 | }; |
| 286 | |
| 287 | static const struct clk_ops audio_ext_lpass_mclk2_ops = { |
| 288 | .prepare = audio_ext_lpass_mclk2_prepare, |
| 289 | .unprepare = audio_ext_lpass_mclk2_unprepare, |
| 290 | }; |
| 291 | |
| 292 | static struct audio_ext_pmi_clk audio_pmi_clk = { |
| 293 | .gpio = -EINVAL, |
| 294 | .fact = { |
| 295 | .mult = 1, |
| 296 | .div = 1, |
| 297 | .hw.init = &(struct clk_init_data){ |
| 298 | .name = "audio_ext_pmi_clk", |
| 299 | .ops = &clk_dummy_ops, |
| 300 | }, |
| 301 | }, |
| 302 | }; |
| 303 | |
| 304 | static struct audio_ext_pmi_clk audio_pmi_lnbb_clk = { |
| 305 | .gpio = -EINVAL, |
| 306 | .fact = { |
| 307 | .mult = 1, |
| 308 | .div = 1, |
| 309 | .hw.init = &(struct clk_init_data){ |
| 310 | .name = "audio_ext_pmi_lnbb_clk", |
| 311 | .ops = &clk_dummy_ops, |
| 312 | }, |
| 313 | }, |
| 314 | }; |
| 315 | |
| 316 | static struct audio_ext_ap_clk audio_ap_clk = { |
| 317 | .gpio = -EINVAL, |
| 318 | .fact = { |
| 319 | .mult = 1, |
| 320 | .div = 1, |
| 321 | .hw.init = &(struct clk_init_data){ |
| 322 | .name = "audio_ap_clk", |
| 323 | .ops = &audio_ext_ap_clk_ops, |
| 324 | }, |
| 325 | }, |
| 326 | }; |
| 327 | |
| 328 | static struct audio_ext_ap_clk2 audio_ap_clk2 = { |
| 329 | .enabled = false, |
| 330 | .pnctrl_info = {NULL}, |
| 331 | .fact = { |
| 332 | .mult = 1, |
| 333 | .div = 1, |
| 334 | .hw.init = &(struct clk_init_data){ |
| 335 | .name = "audio_ap_clk2", |
| 336 | .ops = &audio_ext_ap_clk2_ops, |
| 337 | }, |
| 338 | }, |
| 339 | }; |
| 340 | |
| 341 | static struct audio_ext_lpass_mclk audio_lpass_mclk = { |
| 342 | .pnctrl_info = {NULL}, |
| 343 | .fact = { |
| 344 | .mult = 1, |
| 345 | .div = 1, |
| 346 | .hw.init = &(struct clk_init_data){ |
| 347 | .name = "audio_lpass_mclk", |
| 348 | .ops = &audio_ext_lpass_mclk_ops, |
| 349 | }, |
| 350 | }, |
| 351 | }; |
| 352 | |
| 353 | static struct audio_ext_lpass_mclk audio_lpass_mclk2 = { |
| 354 | .pnctrl_info = {NULL}, |
| 355 | .fact = { |
| 356 | .mult = 1, |
| 357 | .div = 1, |
| 358 | .hw.init = &(struct clk_init_data){ |
| 359 | .name = "audio_lpass_mclk2", |
| 360 | .ops = &audio_ext_lpass_mclk2_ops, |
| 361 | }, |
| 362 | }, |
| 363 | }; |
| 364 | |
| 365 | static struct clk_hw *audio_msm_hws[] = { |
| 366 | &audio_pmi_clk.fact.hw, |
| 367 | &audio_pmi_lnbb_clk.fact.hw, |
| 368 | &audio_ap_clk.fact.hw, |
| 369 | &audio_ap_clk2.fact.hw, |
| 370 | &audio_lpass_mclk.fact.hw, |
| 371 | &audio_lpass_mclk2.fact.hw, |
| 372 | }; |
| 373 | |
| 374 | static int audio_get_pinctrl(struct platform_device *pdev, |
| 375 | enum audio_clk_mux mux) |
| 376 | { |
| 377 | struct pinctrl_info *pnctrl_info; |
| 378 | struct pinctrl *pinctrl; |
| 379 | int ret; |
| 380 | |
| 381 | switch (mux) { |
| 382 | case AP_CLK2: |
| 383 | pnctrl_info = &audio_ap_clk2.pnctrl_info; |
| 384 | break; |
| 385 | case LPASS_MCLK: |
| 386 | pnctrl_info = &audio_lpass_mclk.pnctrl_info; |
| 387 | break; |
| 388 | case LPASS_MCLK2: |
| 389 | pnctrl_info = &audio_lpass_mclk2.pnctrl_info; |
| 390 | break; |
| 391 | default: |
| 392 | dev_err(&pdev->dev, "%s Not a valid MUX ID: %d\n", |
| 393 | __func__, mux); |
| 394 | return -EINVAL; |
| 395 | } |
| 396 | pnctrl_info = &audio_ap_clk2.pnctrl_info; |
| 397 | |
| 398 | if (pnctrl_info->pinctrl) { |
| 399 | dev_dbg(&pdev->dev, "%s: already requested before\n", |
| 400 | __func__); |
| 401 | return -EINVAL; |
| 402 | } |
| 403 | |
| 404 | pinctrl = devm_pinctrl_get(&pdev->dev); |
| 405 | if (IS_ERR_OR_NULL(pinctrl)) { |
| 406 | dev_dbg(&pdev->dev, "%s: Unable to get pinctrl handle\n", |
| 407 | __func__); |
| 408 | return -EINVAL; |
| 409 | } |
| 410 | pnctrl_info->pinctrl = pinctrl; |
| 411 | /* get all state handles from Device Tree */ |
| 412 | pnctrl_info->sleep = pinctrl_lookup_state(pinctrl, "sleep"); |
| 413 | if (IS_ERR(pnctrl_info->sleep)) { |
| 414 | dev_err(&pdev->dev, "%s: could not get sleep pinstate\n", |
| 415 | __func__); |
| 416 | goto err; |
| 417 | } |
| 418 | pnctrl_info->active = pinctrl_lookup_state(pinctrl, "active"); |
| 419 | if (IS_ERR(pnctrl_info->active)) { |
| 420 | dev_err(&pdev->dev, "%s: could not get active pinstate\n", |
| 421 | __func__); |
| 422 | goto err; |
| 423 | } |
| 424 | /* Reset the TLMM pins to a default state */ |
| 425 | ret = pinctrl_select_state(pnctrl_info->pinctrl, |
| 426 | pnctrl_info->sleep); |
| 427 | if (ret) { |
| 428 | dev_err(&pdev->dev, "%s: Disable TLMM pins failed with %d\n", |
| 429 | __func__, ret); |
| 430 | goto err; |
| 431 | } |
| 432 | return 0; |
| 433 | |
| 434 | err: |
| 435 | devm_pinctrl_put(pnctrl_info->pinctrl); |
| 436 | return -EINVAL; |
| 437 | } |
| 438 | |
| 439 | static int audio_ref_clk_probe(struct platform_device *pdev) |
| 440 | { |
| 441 | int clk_gpio; |
| 442 | int ret; |
| 443 | u32 mclk_freq; |
| 444 | struct clk *audio_clk; |
| 445 | struct device *dev = &pdev->dev; |
| 446 | int i; |
| 447 | struct clk_onecell_data *clk_data; |
| 448 | |
| 449 | ret = of_property_read_u32(pdev->dev.of_node, |
| 450 | "qcom,codec-mclk-clk-freq", |
| 451 | &mclk_freq); |
| 452 | if (!ret) { |
| 453 | lpass_mclk.clk_freq_in_hz = mclk_freq; |
| 454 | |
| 455 | ret = audio_get_pinctrl(pdev, LPASS_MCLK); |
| 456 | if (ret) |
| 457 | dev_err(&pdev->dev, "%s: Parsing pinctrl %s failed\n", |
| 458 | __func__, "LPASS_MCLK"); |
| 459 | ret = audio_get_pinctrl(pdev, LPASS_MCLK2); |
| 460 | if (ret) |
| 461 | dev_dbg(&pdev->dev, "%s: Parsing pinctrl %s failed\n", |
| 462 | __func__, "LPASS_MCLK2"); |
| 463 | } |
| 464 | |
| 465 | clk_gpio = of_get_named_gpio(pdev->dev.of_node, |
| 466 | "qcom,audio-ref-clk-gpio", 0); |
| 467 | if (clk_gpio > 0) { |
| 468 | ret = gpio_request(clk_gpio, "EXT_CLK"); |
| 469 | if (ret) { |
| 470 | dev_err(&pdev->dev, |
| 471 | "Request ext clk gpio failed %d, err:%d\n", |
| 472 | clk_gpio, ret); |
| 473 | goto err; |
| 474 | } |
| 475 | if (of_property_read_bool(pdev->dev.of_node, |
| 476 | "qcom,node_has_rpm_clock")) { |
| 477 | audio_pmi_clk.gpio = clk_gpio; |
| 478 | } else |
| 479 | audio_ap_clk.gpio = clk_gpio; |
| 480 | |
| 481 | } |
| 482 | |
| 483 | ret = audio_get_pinctrl(pdev, AP_CLK2); |
| 484 | if (ret) |
| 485 | dev_dbg(&pdev->dev, "%s: Parsing pinctrl failed\n", |
| 486 | __func__); |
| 487 | |
| 488 | clk_data = devm_kzalloc(&pdev->dev, sizeof(*clk_data), GFP_KERNEL); |
| 489 | if (!clk_data) |
| 490 | goto err_gpio; |
| 491 | |
| 492 | clk_data->clk_num = ARRAY_SIZE(audio_msm_hws); |
| 493 | clk_data->clks = devm_kzalloc(&pdev->dev, |
| 494 | clk_data->clk_num * sizeof(struct clk *), |
| 495 | GFP_KERNEL); |
| 496 | if (!clk_data->clks) |
| 497 | goto err_clk; |
| 498 | |
| 499 | for (i = 0; i < ARRAY_SIZE(audio_msm_hws); i++) { |
| 500 | audio_clk = devm_clk_register(dev, audio_msm_hws[i]); |
| 501 | if (IS_ERR(audio_clk)) { |
| 502 | dev_err(&pdev->dev, |
| 503 | "%s: audio ref clock i = %d register failed\n", |
| 504 | __func__, i); |
| 505 | return PTR_ERR(audio_clk); |
| 506 | } |
| 507 | clk_data->clks[i] = audio_clk; |
| 508 | } |
| 509 | |
| 510 | ret = of_clk_add_provider(pdev->dev.of_node, |
| 511 | of_clk_src_onecell_get, clk_data); |
| 512 | if (ret) { |
| 513 | dev_err(&pdev->dev, "%s: audio ref clock register failed\n", |
| 514 | __func__); |
| 515 | goto err_gpio; |
| 516 | } |
| 517 | |
| 518 | return 0; |
| 519 | |
| 520 | err_clk: |
| 521 | if (clk_data) |
| 522 | devm_kfree(&pdev->dev, clk_data->clks); |
| 523 | devm_kfree(&pdev->dev, clk_data); |
| 524 | err_gpio: |
| 525 | gpio_free(clk_gpio); |
| 526 | |
| 527 | err: |
| 528 | return ret; |
| 529 | } |
| 530 | |
| 531 | static int audio_ref_clk_remove(struct platform_device *pdev) |
| 532 | { |
| 533 | struct pinctrl_info *pnctrl_info = &audio_ap_clk2.pnctrl_info; |
| 534 | |
| 535 | if (audio_pmi_clk.gpio > 0) |
| 536 | gpio_free(audio_pmi_clk.gpio); |
| 537 | else if (audio_ap_clk.gpio > 0) |
| 538 | gpio_free(audio_ap_clk.gpio); |
| 539 | |
| 540 | if (pnctrl_info->pinctrl) { |
| 541 | devm_pinctrl_put(pnctrl_info->pinctrl); |
| 542 | pnctrl_info->pinctrl = NULL; |
| 543 | } |
| 544 | |
| 545 | return 0; |
| 546 | } |
| 547 | |
| 548 | static const struct of_device_id audio_ref_clk_match[] = { |
| 549 | {.compatible = "qcom,audio-ref-clk"}, |
| 550 | {} |
| 551 | }; |
| 552 | MODULE_DEVICE_TABLE(of, audio_ref_clk_match); |
| 553 | |
| 554 | static struct platform_driver audio_ref_clk_driver = { |
| 555 | .driver = { |
| 556 | .name = "audio-ref-clk", |
| 557 | .owner = THIS_MODULE, |
| 558 | .of_match_table = audio_ref_clk_match, |
| 559 | }, |
| 560 | .probe = audio_ref_clk_probe, |
| 561 | .remove = audio_ref_clk_remove, |
| 562 | }; |
| 563 | |
| 564 | static int __init audio_ref_clk_platform_init(void) |
| 565 | { |
| 566 | return platform_driver_register(&audio_ref_clk_driver); |
| 567 | } |
| 568 | module_init(audio_ref_clk_platform_init); |
| 569 | |
| 570 | static void __exit audio_ref_clk_platform_exit(void) |
| 571 | { |
| 572 | platform_driver_unregister(&audio_ref_clk_driver); |
| 573 | } |
| 574 | module_exit(audio_ref_clk_platform_exit); |
| 575 | |
| 576 | MODULE_DESCRIPTION("Audio Ref Up Clock module platform driver"); |
| 577 | MODULE_LICENSE("GPL v2"); |