Meng Wang | 43bbb87 | 2018-12-10 12:32:05 +0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-only |
Mangesh Kunchamwar | cdd68db | 2019-01-10 16:21:00 +0530 | [diff] [blame] | 2 | /* Copyright (c) 2015-2019, The Linux Foundation. All rights reserved. |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 3 | */ |
| 4 | |
| 5 | #include <linux/kernel.h> |
| 6 | #include <linux/init.h> |
| 7 | #include <linux/err.h> |
| 8 | #include <linux/module.h> |
| 9 | #include <linux/of.h> |
| 10 | #include <linux/clk.h> |
| 11 | #include <linux/clk-provider.h> |
| 12 | #include "../../../drivers/clk/qcom/common.h" |
Meng Wang | 15c825d | 2018-09-06 10:49:18 +0800 | [diff] [blame] | 13 | #include <linux/pinctrl/consumer.h> |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 14 | #include <linux/platform_device.h> |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 15 | #include <dt-bindings/clock/qcom,audio-ext-clk.h> |
Laxminath Kasam | 605b42f | 2017-08-01 22:02:15 +0530 | [diff] [blame] | 16 | #include <dsp/q6afe-v2.h> |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 17 | #include "audio-ext-clk-up.h" |
| 18 | |
Vidyakumar Athota | ecc4eda | 2017-12-13 16:24:10 -0800 | [diff] [blame] | 19 | enum { |
| 20 | AUDIO_EXT_CLK_PMI, |
| 21 | AUDIO_EXT_CLK_LNBB2, |
| 22 | AUDIO_EXT_CLK_LPASS, |
Laxminath Kasam | d712cc7 | 2018-07-17 23:43:21 +0530 | [diff] [blame] | 23 | AUDIO_EXT_CLK_LPASS2, |
| 24 | AUDIO_EXT_CLK_LPASS3, |
Aditya Bavanari | 7259ca6 | 2018-07-30 12:03:03 +0530 | [diff] [blame] | 25 | AUDIO_EXT_CLK_LPASS4, |
| 26 | AUDIO_EXT_CLK_LPASS5, |
| 27 | AUDIO_EXT_CLK_LPASS6, |
| 28 | AUDIO_EXT_CLK_LPASS7, |
Mangesh Kunchamwar | cdd68db | 2019-01-10 16:21:00 +0530 | [diff] [blame] | 29 | AUDIO_EXT_CLK_LPASS_CORE_HW_VOTE, |
Sudheer Papothi | a1351b9 | 2019-03-07 18:52:08 +0530 | [diff] [blame] | 30 | AUDIO_EXT_CLK_LPASS8, |
Laxminath Kasam | d712cc7 | 2018-07-17 23:43:21 +0530 | [diff] [blame] | 31 | AUDIO_EXT_CLK_LPASS_MAX, |
Rohit kumar | 68725bb | 2018-11-23 16:52:58 +0530 | [diff] [blame] | 32 | AUDIO_EXT_CLK_EXTERNAL_PLL = AUDIO_EXT_CLK_LPASS_MAX, |
| 33 | AUDIO_EXT_CLK_MAX, |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 34 | }; |
| 35 | |
| 36 | struct pinctrl_info { |
| 37 | struct pinctrl *pinctrl; |
| 38 | struct pinctrl_state *sleep; |
| 39 | struct pinctrl_state *active; |
| 40 | char __iomem *base; |
| 41 | }; |
| 42 | |
Vidyakumar Athota | ecc4eda | 2017-12-13 16:24:10 -0800 | [diff] [blame] | 43 | struct audio_ext_clk { |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 44 | struct pinctrl_info pnctrl_info; |
| 45 | struct clk_fixed_factor fact; |
| 46 | }; |
| 47 | |
Vidyakumar Athota | ecc4eda | 2017-12-13 16:24:10 -0800 | [diff] [blame] | 48 | struct audio_ext_clk_priv { |
| 49 | struct device *dev; |
| 50 | int clk_src; |
| 51 | struct afe_clk_set clk_cfg; |
| 52 | struct audio_ext_clk audio_clk; |
Surendar Karka | 0a915f8 | 2018-07-09 20:30:03 +0530 | [diff] [blame] | 53 | const char *clk_name; |
Mangesh Kunchamwar | cdd68db | 2019-01-10 16:21:00 +0530 | [diff] [blame] | 54 | uint32_t lpass_core_hwvote_client_handle; |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 55 | }; |
| 56 | |
Vidyakumar Athota | ecc4eda | 2017-12-13 16:24:10 -0800 | [diff] [blame] | 57 | static inline struct audio_ext_clk_priv *to_audio_clk(struct clk_hw *hw) |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 58 | { |
Vidyakumar Athota | ecc4eda | 2017-12-13 16:24:10 -0800 | [diff] [blame] | 59 | return container_of(hw, struct audio_ext_clk_priv, audio_clk.fact.hw); |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 60 | } |
| 61 | |
| 62 | static int audio_ext_clk_prepare(struct clk_hw *hw) |
| 63 | { |
Vidyakumar Athota | ecc4eda | 2017-12-13 16:24:10 -0800 | [diff] [blame] | 64 | struct audio_ext_clk_priv *clk_priv = to_audio_clk(hw); |
| 65 | struct pinctrl_info *pnctrl_info = &clk_priv->audio_clk.pnctrl_info; |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 66 | int ret; |
| 67 | |
Laxminath Kasam | d712cc7 | 2018-07-17 23:43:21 +0530 | [diff] [blame] | 68 | if ((clk_priv->clk_src >= AUDIO_EXT_CLK_LPASS) && |
| 69 | (clk_priv->clk_src < AUDIO_EXT_CLK_LPASS_MAX)) { |
Vidyakumar Athota | ecc4eda | 2017-12-13 16:24:10 -0800 | [diff] [blame] | 70 | clk_priv->clk_cfg.enable = 1; |
| 71 | ret = afe_set_lpass_clk_cfg(IDX_RSVD_3, &clk_priv->clk_cfg); |
| 72 | if (ret < 0) { |
| 73 | pr_err("%s afe_set_digital_codec_core_clock failed\n", |
| 74 | __func__); |
| 75 | return ret; |
| 76 | } |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 77 | } |
| 78 | |
| 79 | if (pnctrl_info->pinctrl) { |
| 80 | ret = pinctrl_select_state(pnctrl_info->pinctrl, |
| 81 | pnctrl_info->active); |
| 82 | if (ret) { |
| 83 | pr_err("%s: active state select failed with %d\n", |
| 84 | __func__, ret); |
| 85 | return -EIO; |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | if (pnctrl_info->base) |
| 90 | iowrite32(1, pnctrl_info->base); |
| 91 | return 0; |
| 92 | } |
| 93 | |
Vidyakumar Athota | ecc4eda | 2017-12-13 16:24:10 -0800 | [diff] [blame] | 94 | static void audio_ext_clk_unprepare(struct clk_hw *hw) |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 95 | { |
Vidyakumar Athota | ecc4eda | 2017-12-13 16:24:10 -0800 | [diff] [blame] | 96 | struct audio_ext_clk_priv *clk_priv = to_audio_clk(hw); |
| 97 | struct pinctrl_info *pnctrl_info = &clk_priv->audio_clk.pnctrl_info; |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 98 | int ret; |
| 99 | |
| 100 | if (pnctrl_info->pinctrl) { |
| 101 | ret = pinctrl_select_state(pnctrl_info->pinctrl, |
| 102 | pnctrl_info->sleep); |
| 103 | if (ret) { |
| 104 | pr_err("%s: active state select failed with %d\n", |
| 105 | __func__, ret); |
| 106 | return; |
| 107 | } |
| 108 | } |
| 109 | |
Laxminath Kasam | d712cc7 | 2018-07-17 23:43:21 +0530 | [diff] [blame] | 110 | if ((clk_priv->clk_src >= AUDIO_EXT_CLK_LPASS) && |
| 111 | (clk_priv->clk_src < AUDIO_EXT_CLK_LPASS_MAX)) { |
Vidyakumar Athota | ecc4eda | 2017-12-13 16:24:10 -0800 | [diff] [blame] | 112 | clk_priv->clk_cfg.enable = 0; |
| 113 | ret = afe_set_lpass_clk_cfg(IDX_RSVD_3, &clk_priv->clk_cfg); |
| 114 | if (ret < 0) |
| 115 | pr_err("%s: afe_set_lpass_clk_cfg failed, ret = %d\n", |
| 116 | __func__, ret); |
| 117 | } |
| 118 | |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 119 | if (pnctrl_info->base) |
| 120 | iowrite32(0, pnctrl_info->base); |
| 121 | } |
| 122 | |
Surendar Karka | 0a915f8 | 2018-07-09 20:30:03 +0530 | [diff] [blame] | 123 | static u8 audio_ext_clk_get_parent(struct clk_hw *hw) |
| 124 | { |
| 125 | struct audio_ext_clk_priv *clk_priv = to_audio_clk(hw); |
| 126 | int num_parents = clk_hw_get_num_parents(hw); |
| 127 | const char * const *parent_names = hw->init->parent_names; |
| 128 | u8 i = 0, ret = hw->init->num_parents + 1; |
| 129 | |
| 130 | if ((clk_priv->clk_src == AUDIO_EXT_CLK_PMI) && clk_priv->clk_name) { |
| 131 | for (i = 0; i < num_parents; i++) { |
| 132 | if (!strcmp(parent_names[i], clk_priv->clk_name)) |
| 133 | ret = i; |
| 134 | } |
| 135 | pr_debug("%s: parent index = %u\n", __func__, ret); |
| 136 | return ret; |
| 137 | } else |
| 138 | return 0; |
| 139 | } |
| 140 | |
Mangesh Kunchamwar | cdd68db | 2019-01-10 16:21:00 +0530 | [diff] [blame] | 141 | static int lpass_hw_vote_prepare(struct clk_hw *hw) |
Mangesh Kunchamwar | 912a96a | 2018-11-13 16:04:53 +0530 | [diff] [blame] | 142 | { |
| 143 | struct audio_ext_clk_priv *clk_priv = to_audio_clk(hw); |
| 144 | int ret; |
| 145 | |
Mangesh Kunchamwar | cdd68db | 2019-01-10 16:21:00 +0530 | [diff] [blame] | 146 | if (clk_priv->clk_src == AUDIO_EXT_CLK_LPASS_CORE_HW_VOTE) { |
| 147 | ret = afe_vote_lpass_core_hw(AFE_LPASS_CORE_HW_MACRO_BLOCK, |
| 148 | "LPASS_HW_MACRO", |
| 149 | &clk_priv->lpass_core_hwvote_client_handle); |
| 150 | if (ret < 0) { |
| 151 | pr_err("%s lpass core hw vote failed %d\n", |
| 152 | __func__, ret); |
| 153 | return ret; |
Mangesh Kunchamwar | 912a96a | 2018-11-13 16:04:53 +0530 | [diff] [blame] | 154 | } |
| 155 | } |
| 156 | |
| 157 | return 0; |
| 158 | } |
| 159 | |
Mangesh Kunchamwar | cdd68db | 2019-01-10 16:21:00 +0530 | [diff] [blame] | 160 | static void lpass_hw_vote_unprepare(struct clk_hw *hw) |
Mangesh Kunchamwar | 912a96a | 2018-11-13 16:04:53 +0530 | [diff] [blame] | 161 | { |
| 162 | struct audio_ext_clk_priv *clk_priv = to_audio_clk(hw); |
| 163 | int ret = 0; |
| 164 | |
Mangesh Kunchamwar | cdd68db | 2019-01-10 16:21:00 +0530 | [diff] [blame] | 165 | if (clk_priv->clk_src == AUDIO_EXT_CLK_LPASS_CORE_HW_VOTE) { |
| 166 | ret = afe_unvote_lpass_core_hw( |
| 167 | AFE_LPASS_CORE_HW_MACRO_BLOCK, |
| 168 | clk_priv->lpass_core_hwvote_client_handle); |
| 169 | if (ret < 0) { |
| 170 | pr_err("%s lpass core hw vote failed %d\n", |
| 171 | __func__, ret); |
Mangesh Kunchamwar | 912a96a | 2018-11-13 16:04:53 +0530 | [diff] [blame] | 172 | } |
| 173 | } |
| 174 | } |
| 175 | |
Vidyakumar Athota | ecc4eda | 2017-12-13 16:24:10 -0800 | [diff] [blame] | 176 | static const struct clk_ops audio_ext_clk_ops = { |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 177 | .prepare = audio_ext_clk_prepare, |
| 178 | .unprepare = audio_ext_clk_unprepare, |
Surendar Karka | 0a915f8 | 2018-07-09 20:30:03 +0530 | [diff] [blame] | 179 | .get_parent = audio_ext_clk_get_parent, |
| 180 | }; |
| 181 | |
Mangesh Kunchamwar | cdd68db | 2019-01-10 16:21:00 +0530 | [diff] [blame] | 182 | static const struct clk_ops lpass_hw_vote_ops = { |
| 183 | .prepare = lpass_hw_vote_prepare, |
| 184 | .unprepare = lpass_hw_vote_unprepare, |
Mangesh Kunchamwar | 912a96a | 2018-11-13 16:04:53 +0530 | [diff] [blame] | 185 | }; |
| 186 | |
Surendar Karka | 0a915f8 | 2018-07-09 20:30:03 +0530 | [diff] [blame] | 187 | static const char * const audio_ext_pmi_div_clk[] = { |
| 188 | "qpnp_clkdiv_1", |
| 189 | "pms405_div_clk1", |
| 190 | "pm6150_div_clk1", |
Aditya Bavanari | 94eb98b | 2019-01-25 21:55:05 +0530 | [diff] [blame] | 191 | "pm6125_div_clk1", |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 192 | }; |
| 193 | |
Sudheer Papothi | 9b51e3e | 2018-07-21 05:20:10 +0530 | [diff] [blame] | 194 | static int audio_ext_clk_dummy_prepare(struct clk_hw *hw) |
| 195 | { |
| 196 | return 0; |
| 197 | } |
| 198 | |
| 199 | static void audio_ext_clk_dummy_unprepare(struct clk_hw *hw) |
| 200 | { |
| 201 | |
| 202 | } |
| 203 | |
| 204 | static const struct clk_ops audio_ext_clk_dummy_ops = { |
| 205 | .prepare = audio_ext_clk_dummy_prepare, |
| 206 | .unprepare = audio_ext_clk_dummy_unprepare, |
| 207 | }; |
| 208 | |
Vidyakumar Athota | ecc4eda | 2017-12-13 16:24:10 -0800 | [diff] [blame] | 209 | static struct audio_ext_clk audio_clk_array[] = { |
| 210 | { |
| 211 | .pnctrl_info = {NULL}, |
| 212 | .fact = { |
| 213 | .mult = 1, |
| 214 | .div = 1, |
| 215 | .hw.init = &(struct clk_init_data){ |
| 216 | .name = "audio_ext_pmi_clk", |
Surendar Karka | 0a915f8 | 2018-07-09 20:30:03 +0530 | [diff] [blame] | 217 | .parent_names = audio_ext_pmi_div_clk, |
| 218 | .num_parents = |
| 219 | ARRAY_SIZE(audio_ext_pmi_div_clk), |
Vidyakumar Athota | ecc4eda | 2017-12-13 16:24:10 -0800 | [diff] [blame] | 220 | .ops = &audio_ext_clk_ops, |
| 221 | }, |
| 222 | }, |
| 223 | }, |
| 224 | { |
| 225 | .pnctrl_info = {NULL}, |
| 226 | .fact = { |
| 227 | .mult = 1, |
| 228 | .div = 1, |
| 229 | .hw.init = &(struct clk_init_data){ |
| 230 | .name = "audio_ext_pmi_lnbb_clk", |
| 231 | .parent_names = (const char *[]) |
| 232 | { "ln_bb_clk2" }, |
| 233 | .num_parents = 1, |
Sudheer Papothi | 9b51e3e | 2018-07-21 05:20:10 +0530 | [diff] [blame] | 234 | .ops = &audio_ext_clk_dummy_ops, |
Vidyakumar Athota | ecc4eda | 2017-12-13 16:24:10 -0800 | [diff] [blame] | 235 | }, |
| 236 | }, |
| 237 | }, |
| 238 | { |
| 239 | .pnctrl_info = {NULL}, |
| 240 | .fact = { |
| 241 | .mult = 1, |
| 242 | .div = 1, |
| 243 | .hw.init = &(struct clk_init_data){ |
| 244 | .name = "audio_lpass_mclk", |
| 245 | .ops = &audio_ext_clk_ops, |
| 246 | }, |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 247 | }, |
| 248 | }, |
Laxminath Kasam | d712cc7 | 2018-07-17 23:43:21 +0530 | [diff] [blame] | 249 | { |
| 250 | .pnctrl_info = {NULL}, |
| 251 | .fact = { |
| 252 | .mult = 1, |
| 253 | .div = 1, |
| 254 | .hw.init = &(struct clk_init_data){ |
| 255 | .name = "audio_lpass_mclk2", |
| 256 | .ops = &audio_ext_clk_ops, |
| 257 | }, |
| 258 | }, |
| 259 | }, |
| 260 | { |
| 261 | .pnctrl_info = {NULL}, |
| 262 | .fact = { |
| 263 | .mult = 1, |
| 264 | .div = 1, |
| 265 | .hw.init = &(struct clk_init_data){ |
| 266 | .name = "audio_lpass_mclk3", |
| 267 | .ops = &audio_ext_clk_ops, |
| 268 | }, |
| 269 | }, |
| 270 | }, |
Aditya Bavanari | 7259ca6 | 2018-07-30 12:03:03 +0530 | [diff] [blame] | 271 | { |
| 272 | .pnctrl_info = {NULL}, |
| 273 | .fact = { |
| 274 | .mult = 1, |
| 275 | .div = 1, |
| 276 | .hw.init = &(struct clk_init_data){ |
| 277 | .name = "audio_lpass_mclk4", |
| 278 | .ops = &audio_ext_clk_ops, |
| 279 | }, |
| 280 | }, |
| 281 | }, |
| 282 | { |
| 283 | .pnctrl_info = {NULL}, |
| 284 | .fact = { |
| 285 | .mult = 1, |
| 286 | .div = 1, |
| 287 | .hw.init = &(struct clk_init_data){ |
| 288 | .name = "audio_lpass_mclk5", |
| 289 | .ops = &audio_ext_clk_ops, |
| 290 | }, |
| 291 | }, |
| 292 | }, |
| 293 | { |
| 294 | .pnctrl_info = {NULL}, |
| 295 | .fact = { |
| 296 | .mult = 1, |
| 297 | .div = 1, |
| 298 | .hw.init = &(struct clk_init_data){ |
| 299 | .name = "audio_lpass_mclk6", |
| 300 | .ops = &audio_ext_clk_ops, |
| 301 | }, |
| 302 | }, |
| 303 | }, |
| 304 | { |
| 305 | .pnctrl_info = {NULL}, |
| 306 | .fact = { |
| 307 | .mult = 1, |
| 308 | .div = 1, |
| 309 | .hw.init = &(struct clk_init_data){ |
| 310 | .name = "audio_lpass_mclk7", |
| 311 | .ops = &audio_ext_clk_ops, |
| 312 | }, |
| 313 | }, |
| 314 | }, |
Mangesh Kunchamwar | 912a96a | 2018-11-13 16:04:53 +0530 | [diff] [blame] | 315 | { |
| 316 | .pnctrl_info = {NULL}, |
| 317 | .fact = { |
| 318 | .hw.init = &(struct clk_init_data){ |
Mangesh Kunchamwar | cdd68db | 2019-01-10 16:21:00 +0530 | [diff] [blame] | 319 | .name = "lpass_hw_vote_clk", |
| 320 | .ops = &lpass_hw_vote_ops, |
Mangesh Kunchamwar | 912a96a | 2018-11-13 16:04:53 +0530 | [diff] [blame] | 321 | }, |
| 322 | }, |
| 323 | }, |
Rohit kumar | 68725bb | 2018-11-23 16:52:58 +0530 | [diff] [blame] | 324 | { |
| 325 | .pnctrl_info = {NULL}, |
| 326 | .fact = { |
| 327 | .mult = 1, |
| 328 | .div = 1, |
| 329 | .hw.init = &(struct clk_init_data){ |
Sudheer Papothi | a1351b9 | 2019-03-07 18:52:08 +0530 | [diff] [blame] | 330 | .name = "audio_lpass_mclk8", |
| 331 | .ops = &audio_ext_clk_ops, |
| 332 | }, |
| 333 | }, |
| 334 | }, |
| 335 | { |
| 336 | .pnctrl_info = {NULL}, |
| 337 | .fact = { |
| 338 | .mult = 1, |
| 339 | .div = 1, |
| 340 | .hw.init = &(struct clk_init_data){ |
Rohit kumar | 68725bb | 2018-11-23 16:52:58 +0530 | [diff] [blame] | 341 | .name = "audio_external_pll_clk", |
| 342 | .ops = &audio_ext_clk_ops, |
| 343 | }, |
| 344 | }, |
| 345 | }, |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 346 | }; |
| 347 | |
Vidyakumar Athota | ecc4eda | 2017-12-13 16:24:10 -0800 | [diff] [blame] | 348 | static int audio_get_pinctrl(struct platform_device *pdev) |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 349 | { |
| 350 | struct device *dev = &pdev->dev; |
Vidyakumar Athota | ecc4eda | 2017-12-13 16:24:10 -0800 | [diff] [blame] | 351 | struct audio_ext_clk_priv *clk_priv = platform_get_drvdata(pdev); |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 352 | struct pinctrl_info *pnctrl_info; |
| 353 | struct pinctrl *pinctrl; |
| 354 | int ret; |
| 355 | u32 reg; |
| 356 | |
Vidyakumar Athota | ecc4eda | 2017-12-13 16:24:10 -0800 | [diff] [blame] | 357 | pnctrl_info = &clk_priv->audio_clk.pnctrl_info; |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 358 | if (pnctrl_info->pinctrl) { |
Vidyakumar Athota | ecc4eda | 2017-12-13 16:24:10 -0800 | [diff] [blame] | 359 | dev_err(dev, "%s: already requested before\n", |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 360 | __func__); |
| 361 | return -EINVAL; |
| 362 | } |
| 363 | |
| 364 | pinctrl = devm_pinctrl_get(dev); |
| 365 | if (IS_ERR_OR_NULL(pinctrl)) { |
Vidyakumar Athota | ecc4eda | 2017-12-13 16:24:10 -0800 | [diff] [blame] | 366 | dev_err(dev, "%s: Unable to get pinctrl handle\n", |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 367 | __func__); |
| 368 | return -EINVAL; |
| 369 | } |
| 370 | pnctrl_info->pinctrl = pinctrl; |
| 371 | /* get all state handles from Device Tree */ |
| 372 | pnctrl_info->sleep = pinctrl_lookup_state(pinctrl, "sleep"); |
| 373 | if (IS_ERR(pnctrl_info->sleep)) { |
| 374 | dev_err(dev, "%s: could not get sleep pinstate\n", |
| 375 | __func__); |
| 376 | goto err; |
| 377 | } |
| 378 | pnctrl_info->active = pinctrl_lookup_state(pinctrl, "active"); |
| 379 | if (IS_ERR(pnctrl_info->active)) { |
| 380 | dev_err(dev, "%s: could not get active pinstate\n", |
| 381 | __func__); |
| 382 | goto err; |
| 383 | } |
| 384 | /* Reset the TLMM pins to a default state */ |
| 385 | ret = pinctrl_select_state(pnctrl_info->pinctrl, |
| 386 | pnctrl_info->sleep); |
| 387 | if (ret) { |
| 388 | dev_err(dev, "%s: Disable TLMM pins failed with %d\n", |
| 389 | __func__, ret); |
| 390 | goto err; |
| 391 | } |
| 392 | |
| 393 | ret = of_property_read_u32(dev->of_node, "qcom,mclk-clk-reg", ®); |
| 394 | if (ret < 0) { |
| 395 | dev_dbg(dev, "%s: miss mclk reg\n", __func__); |
| 396 | } else { |
| 397 | pnctrl_info->base = ioremap(reg, sizeof(u32)); |
| 398 | if (pnctrl_info->base == NULL) { |
| 399 | dev_err(dev, "%s ioremap failed\n", __func__); |
| 400 | goto err; |
| 401 | } |
| 402 | } |
| 403 | |
| 404 | return 0; |
| 405 | |
| 406 | err: |
| 407 | devm_pinctrl_put(pnctrl_info->pinctrl); |
| 408 | return -EINVAL; |
| 409 | } |
| 410 | |
Vidyakumar Athota | ecc4eda | 2017-12-13 16:24:10 -0800 | [diff] [blame] | 411 | static int audio_put_pinctrl(struct platform_device *pdev) |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 412 | { |
Vidyakumar Athota | ecc4eda | 2017-12-13 16:24:10 -0800 | [diff] [blame] | 413 | struct audio_ext_clk_priv *clk_priv = platform_get_drvdata(pdev); |
| 414 | struct pinctrl_info *pnctrl_info = NULL; |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 415 | |
Vidyakumar Athota | ecc4eda | 2017-12-13 16:24:10 -0800 | [diff] [blame] | 416 | pnctrl_info = &clk_priv->audio_clk.pnctrl_info; |
| 417 | if (pnctrl_info && pnctrl_info->pinctrl) { |
| 418 | devm_pinctrl_put(pnctrl_info->pinctrl); |
| 419 | pnctrl_info->pinctrl = NULL; |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 420 | } |
| 421 | |
| 422 | return 0; |
Vidyakumar Athota | ecc4eda | 2017-12-13 16:24:10 -0800 | [diff] [blame] | 423 | } |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 424 | |
Vidyakumar Athota | ecc4eda | 2017-12-13 16:24:10 -0800 | [diff] [blame] | 425 | static int audio_get_clk_data(struct platform_device *pdev) |
| 426 | { |
| 427 | int ret; |
| 428 | struct clk *audio_clk; |
| 429 | struct clk_hw *clkhw; |
| 430 | struct clk_onecell_data *clk_data; |
| 431 | struct audio_ext_clk_priv *clk_priv = platform_get_drvdata(pdev); |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 432 | |
Vidyakumar Athota | ecc4eda | 2017-12-13 16:24:10 -0800 | [diff] [blame] | 433 | clk_data = devm_kzalloc(&pdev->dev, sizeof(*clk_data), GFP_KERNEL); |
| 434 | if (!clk_data) |
| 435 | return -ENOMEM; |
| 436 | |
| 437 | clk_data->clk_num = 1; |
| 438 | clk_data->clks = devm_kzalloc(&pdev->dev, |
| 439 | sizeof(struct clk *), |
| 440 | GFP_KERNEL); |
| 441 | if (!clk_data->clks) |
| 442 | return -ENOMEM; |
| 443 | |
| 444 | clkhw = &clk_priv->audio_clk.fact.hw; |
| 445 | audio_clk = devm_clk_register(&pdev->dev, clkhw); |
| 446 | if (IS_ERR(audio_clk)) { |
| 447 | dev_err(&pdev->dev, |
| 448 | "%s: clock register failed for clk_src = %d\\n", |
| 449 | __func__, clk_priv->clk_src); |
| 450 | ret = PTR_ERR(audio_clk); |
| 451 | return ret; |
| 452 | } |
| 453 | clk_data->clks[0] = audio_clk; |
| 454 | |
| 455 | ret = of_clk_add_provider(pdev->dev.of_node, |
| 456 | of_clk_src_onecell_get, clk_data); |
| 457 | if (ret) |
| 458 | dev_err(&pdev->dev, "%s: clock add failed for clk_src = %d\n", |
| 459 | __func__, clk_priv->clk_src); |
| 460 | |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 461 | return ret; |
| 462 | } |
| 463 | |
Vidyakumar Athota | ecc4eda | 2017-12-13 16:24:10 -0800 | [diff] [blame] | 464 | static int audio_ref_clk_probe(struct platform_device *pdev) |
| 465 | { |
| 466 | int ret; |
| 467 | struct audio_ext_clk_priv *clk_priv; |
Laxminath Kasam | 43c1a13 | 2018-06-15 13:18:07 +0530 | [diff] [blame] | 468 | u32 clk_freq = 0, clk_id = 0, clk_src = 0, use_pinctrl = 0; |
Vidyakumar Athota | ecc4eda | 2017-12-13 16:24:10 -0800 | [diff] [blame] | 469 | |
| 470 | clk_priv = devm_kzalloc(&pdev->dev, sizeof(*clk_priv), GFP_KERNEL); |
| 471 | if (!clk_priv) |
| 472 | return -ENOMEM; |
| 473 | |
| 474 | ret = of_property_read_u32(pdev->dev.of_node, |
| 475 | "qcom,codec-ext-clk-src", |
| 476 | &clk_src); |
| 477 | if (ret) { |
| 478 | dev_err(&pdev->dev, "%s: could not get clk source, ret = %d\n", |
| 479 | __func__, ret); |
| 480 | return ret; |
| 481 | } |
| 482 | |
| 483 | if (clk_src >= AUDIO_EXT_CLK_MAX) { |
| 484 | dev_err(&pdev->dev, "%s: Invalid clk source = %d\n", |
| 485 | __func__, clk_src); |
| 486 | return -EINVAL; |
| 487 | } |
Surendar Karka | 0a915f8 | 2018-07-09 20:30:03 +0530 | [diff] [blame] | 488 | clk_priv->clk_name = NULL; |
Vidyakumar Athota | ecc4eda | 2017-12-13 16:24:10 -0800 | [diff] [blame] | 489 | clk_priv->clk_src = clk_src; |
| 490 | memcpy(&clk_priv->audio_clk, &audio_clk_array[clk_src], |
| 491 | sizeof(struct audio_ext_clk)); |
| 492 | |
| 493 | /* Init lpass clk default values */ |
| 494 | clk_priv->clk_cfg.clk_set_minor_version = |
| 495 | Q6AFE_LPASS_CLK_CONFIG_API_VERSION; |
| 496 | clk_priv->clk_cfg.clk_id = Q6AFE_LPASS_CLK_ID_SPEAKER_I2S_OSR; |
| 497 | clk_priv->clk_cfg.clk_freq_in_hz = Q6AFE_LPASS_OSR_CLK_9_P600_MHZ; |
| 498 | clk_priv->clk_cfg.clk_attri = Q6AFE_LPASS_CLK_ATTRIBUTE_COUPLE_NO; |
| 499 | |
| 500 | ret = of_property_read_u32(pdev->dev.of_node, |
| 501 | "qcom,codec-lpass-ext-clk-freq", |
| 502 | &clk_freq); |
| 503 | if (!ret) |
| 504 | clk_priv->clk_cfg.clk_freq_in_hz = clk_freq; |
| 505 | |
| 506 | ret = of_property_read_u32(pdev->dev.of_node, |
| 507 | "qcom,codec-lpass-clk-id", |
| 508 | &clk_id); |
| 509 | if (!ret) |
| 510 | clk_priv->clk_cfg.clk_id = clk_id; |
| 511 | |
| 512 | dev_dbg(&pdev->dev, "%s: ext-clk freq: %d, lpass clk_id: %d, clk_src: %d\n", |
| 513 | __func__, clk_priv->clk_cfg.clk_freq_in_hz, |
| 514 | clk_priv->clk_cfg.clk_id, clk_priv->clk_src); |
| 515 | platform_set_drvdata(pdev, clk_priv); |
| 516 | |
Surendar Karka | 0a915f8 | 2018-07-09 20:30:03 +0530 | [diff] [blame] | 517 | ret = of_property_read_string(pdev->dev.of_node, "pmic-clock-names", |
| 518 | &clk_priv->clk_name); |
| 519 | if (ret) |
| 520 | dev_dbg(&pdev->dev, "%s: could not find pmic clock names\n", |
| 521 | __func__); |
Laxminath Kasam | 43c1a13 | 2018-06-15 13:18:07 +0530 | [diff] [blame] | 522 | /* |
| 523 | * property qcom,use-pinctrl to be defined in DTSI to val 1 |
| 524 | * for clock nodes using pinctrl |
| 525 | */ |
| 526 | of_property_read_u32(pdev->dev.of_node, "qcom,use-pinctrl", |
| 527 | &use_pinctrl); |
| 528 | dev_dbg(&pdev->dev, "%s: use-pinctrl : %d\n", |
| 529 | __func__, use_pinctrl); |
| 530 | |
| 531 | if (use_pinctrl) { |
| 532 | ret = audio_get_pinctrl(pdev); |
| 533 | if (ret) { |
| 534 | dev_err(&pdev->dev, "%s: Parsing PMI pinctrl failed\n", |
| 535 | __func__); |
| 536 | return ret; |
| 537 | } |
Vidyakumar Athota | ecc4eda | 2017-12-13 16:24:10 -0800 | [diff] [blame] | 538 | } |
| 539 | |
| 540 | ret = audio_get_clk_data(pdev); |
| 541 | if (ret) { |
| 542 | dev_err(&pdev->dev, "%s: clk_init is failed\n", |
| 543 | __func__); |
| 544 | audio_put_pinctrl(pdev); |
| 545 | return ret; |
| 546 | } |
Vidyakumar Athota | ecc4eda | 2017-12-13 16:24:10 -0800 | [diff] [blame] | 547 | return 0; |
| 548 | } |
| 549 | |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 550 | static int audio_ref_clk_remove(struct platform_device *pdev) |
| 551 | { |
Vidyakumar Athota | ecc4eda | 2017-12-13 16:24:10 -0800 | [diff] [blame] | 552 | audio_put_pinctrl(pdev); |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 553 | |
| 554 | return 0; |
| 555 | } |
| 556 | |
| 557 | static const struct of_device_id audio_ref_clk_match[] = { |
| 558 | {.compatible = "qcom,audio-ref-clk"}, |
| 559 | {} |
| 560 | }; |
| 561 | MODULE_DEVICE_TABLE(of, audio_ref_clk_match); |
| 562 | |
| 563 | static struct platform_driver audio_ref_clk_driver = { |
| 564 | .driver = { |
| 565 | .name = "audio-ref-clk", |
| 566 | .owner = THIS_MODULE, |
| 567 | .of_match_table = audio_ref_clk_match, |
Xiaojun Sang | 53cd13a | 2018-06-29 15:14:37 +0800 | [diff] [blame^] | 568 | .suppress_bind_attrs = true, |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 569 | }, |
| 570 | .probe = audio_ref_clk_probe, |
| 571 | .remove = audio_ref_clk_remove, |
| 572 | }; |
| 573 | |
| 574 | int audio_ref_clk_platform_init(void) |
| 575 | { |
| 576 | return platform_driver_register(&audio_ref_clk_driver); |
| 577 | } |
| 578 | |
| 579 | void audio_ref_clk_platform_exit(void) |
| 580 | { |
| 581 | platform_driver_unregister(&audio_ref_clk_driver); |
| 582 | } |
| 583 | |
| 584 | MODULE_DESCRIPTION("Audio Ref Up Clock module platform driver"); |
| 585 | MODULE_LICENSE("GPL v2"); |