Nicolin Chen | 8de2ae2 | 2013-06-11 02:43:30 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2013 Freescale Semiconductor, Inc. |
| 3 | * |
| 4 | * Based on imx-sgtl5000.c |
| 5 | * Copyright 2012 Freescale Semiconductor, Inc. |
| 6 | * Copyright 2012 Linaro Ltd. |
| 7 | * |
| 8 | * The code contained herein is licensed under the GNU General Public |
| 9 | * License. You may obtain a copy of the GNU General Public License |
| 10 | * Version 2 or later at the following locations: |
| 11 | * |
| 12 | * http://www.opensource.org/licenses/gpl-license.html |
| 13 | * http://www.gnu.org/copyleft/gpl.html |
| 14 | */ |
| 15 | |
| 16 | #include <linux/module.h> |
| 17 | #include <linux/of_platform.h> |
Wolfram Sang | 687b81d | 2013-07-11 12:56:15 +0100 | [diff] [blame] | 18 | #include <linux/i2c.h> |
Nicolin Chen | 8de2ae2 | 2013-06-11 02:43:30 +0800 | [diff] [blame] | 19 | #include <linux/slab.h> |
| 20 | #include <linux/clk.h> |
| 21 | #include <sound/soc.h> |
| 22 | #include <sound/pcm_params.h> |
| 23 | #include <sound/soc-dapm.h> |
| 24 | #include <linux/pinctrl/consumer.h> |
| 25 | |
| 26 | #include "../codecs/wm8962.h" |
| 27 | #include "imx-audmux.h" |
| 28 | |
| 29 | #define DAI_NAME_SIZE 32 |
| 30 | |
| 31 | struct imx_wm8962_data { |
| 32 | struct snd_soc_dai_link dai; |
| 33 | struct snd_soc_card card; |
| 34 | char codec_dai_name[DAI_NAME_SIZE]; |
| 35 | char platform_name[DAI_NAME_SIZE]; |
| 36 | struct clk *codec_clk; |
| 37 | unsigned int clk_frequency; |
| 38 | }; |
| 39 | |
| 40 | struct imx_priv { |
| 41 | struct platform_device *pdev; |
| 42 | }; |
| 43 | static struct imx_priv card_priv; |
| 44 | |
| 45 | static const struct snd_soc_dapm_widget imx_wm8962_dapm_widgets[] = { |
| 46 | SND_SOC_DAPM_HP("Headphone Jack", NULL), |
| 47 | SND_SOC_DAPM_SPK("Ext Spk", NULL), |
| 48 | SND_SOC_DAPM_MIC("AMIC", NULL), |
| 49 | SND_SOC_DAPM_MIC("DMIC", NULL), |
| 50 | }; |
| 51 | |
| 52 | static int sample_rate = 44100; |
| 53 | static snd_pcm_format_t sample_format = SNDRV_PCM_FORMAT_S16_LE; |
| 54 | |
| 55 | static int imx_hifi_hw_params(struct snd_pcm_substream *substream, |
| 56 | struct snd_pcm_hw_params *params) |
| 57 | { |
| 58 | sample_rate = params_rate(params); |
| 59 | sample_format = params_format(params); |
| 60 | |
| 61 | return 0; |
| 62 | } |
| 63 | |
| 64 | static struct snd_soc_ops imx_hifi_ops = { |
| 65 | .hw_params = imx_hifi_hw_params, |
| 66 | }; |
| 67 | |
| 68 | static int imx_wm8962_set_bias_level(struct snd_soc_card *card, |
| 69 | struct snd_soc_dapm_context *dapm, |
| 70 | enum snd_soc_bias_level level) |
| 71 | { |
Mengdong Lin | 5015920 | 2015-11-18 02:34:01 -0500 | [diff] [blame] | 72 | struct snd_soc_pcm_runtime *rtd; |
| 73 | struct snd_soc_dai *codec_dai; |
Nicolin Chen | 8de2ae2 | 2013-06-11 02:43:30 +0800 | [diff] [blame] | 74 | struct imx_priv *priv = &card_priv; |
Shawn Guo | 47cf84e | 2014-02-08 13:20:35 +0800 | [diff] [blame] | 75 | struct imx_wm8962_data *data = snd_soc_card_get_drvdata(card); |
Nicolin Chen | 8de2ae2 | 2013-06-11 02:43:30 +0800 | [diff] [blame] | 76 | struct device *dev = &priv->pdev->dev; |
| 77 | unsigned int pll_out; |
| 78 | int ret; |
| 79 | |
Mengdong Lin | 5015920 | 2015-11-18 02:34:01 -0500 | [diff] [blame] | 80 | rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name); |
| 81 | codec_dai = rtd->codec_dai; |
Nicolin Chen | 8de2ae2 | 2013-06-11 02:43:30 +0800 | [diff] [blame] | 82 | if (dapm->dev != codec_dai->dev) |
| 83 | return 0; |
| 84 | |
| 85 | switch (level) { |
| 86 | case SND_SOC_BIAS_PREPARE: |
| 87 | if (dapm->bias_level == SND_SOC_BIAS_STANDBY) { |
| 88 | if (sample_format == SNDRV_PCM_FORMAT_S24_LE) |
| 89 | pll_out = sample_rate * 384; |
| 90 | else |
| 91 | pll_out = sample_rate * 256; |
| 92 | |
| 93 | ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL, |
| 94 | WM8962_FLL_MCLK, data->clk_frequency, |
| 95 | pll_out); |
| 96 | if (ret < 0) { |
| 97 | dev_err(dev, "failed to start FLL: %d\n", ret); |
| 98 | return ret; |
| 99 | } |
| 100 | |
| 101 | ret = snd_soc_dai_set_sysclk(codec_dai, |
| 102 | WM8962_SYSCLK_FLL, pll_out, |
| 103 | SND_SOC_CLOCK_IN); |
| 104 | if (ret < 0) { |
| 105 | dev_err(dev, "failed to set SYSCLK: %d\n", ret); |
| 106 | return ret; |
| 107 | } |
| 108 | } |
| 109 | break; |
| 110 | |
| 111 | case SND_SOC_BIAS_STANDBY: |
| 112 | if (dapm->bias_level == SND_SOC_BIAS_PREPARE) { |
| 113 | ret = snd_soc_dai_set_sysclk(codec_dai, |
| 114 | WM8962_SYSCLK_MCLK, data->clk_frequency, |
| 115 | SND_SOC_CLOCK_IN); |
| 116 | if (ret < 0) { |
| 117 | dev_err(dev, |
| 118 | "failed to switch away from FLL: %d\n", |
| 119 | ret); |
| 120 | return ret; |
| 121 | } |
| 122 | |
| 123 | ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL, |
| 124 | 0, 0, 0); |
| 125 | if (ret < 0) { |
| 126 | dev_err(dev, "failed to stop FLL: %d\n", ret); |
| 127 | return ret; |
| 128 | } |
| 129 | } |
| 130 | break; |
| 131 | |
| 132 | default: |
| 133 | break; |
| 134 | } |
| 135 | |
Nicolin Chen | 8de2ae2 | 2013-06-11 02:43:30 +0800 | [diff] [blame] | 136 | return 0; |
| 137 | } |
| 138 | |
| 139 | static int imx_wm8962_late_probe(struct snd_soc_card *card) |
| 140 | { |
Mengdong Lin | 5015920 | 2015-11-18 02:34:01 -0500 | [diff] [blame] | 141 | struct snd_soc_pcm_runtime *rtd; |
| 142 | struct snd_soc_dai *codec_dai; |
Nicolin Chen | 8de2ae2 | 2013-06-11 02:43:30 +0800 | [diff] [blame] | 143 | struct imx_priv *priv = &card_priv; |
Shawn Guo | 47cf84e | 2014-02-08 13:20:35 +0800 | [diff] [blame] | 144 | struct imx_wm8962_data *data = snd_soc_card_get_drvdata(card); |
Nicolin Chen | 8de2ae2 | 2013-06-11 02:43:30 +0800 | [diff] [blame] | 145 | struct device *dev = &priv->pdev->dev; |
| 146 | int ret; |
| 147 | |
Mengdong Lin | 5015920 | 2015-11-18 02:34:01 -0500 | [diff] [blame] | 148 | rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name); |
| 149 | codec_dai = rtd->codec_dai; |
Nicolin Chen | 8de2ae2 | 2013-06-11 02:43:30 +0800 | [diff] [blame] | 150 | ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK, |
| 151 | data->clk_frequency, SND_SOC_CLOCK_IN); |
| 152 | if (ret < 0) |
| 153 | dev_err(dev, "failed to set sysclk in %s\n", __func__); |
| 154 | |
| 155 | return ret; |
| 156 | } |
| 157 | |
| 158 | static int imx_wm8962_probe(struct platform_device *pdev) |
| 159 | { |
| 160 | struct device_node *np = pdev->dev.of_node; |
| 161 | struct device_node *ssi_np, *codec_np; |
| 162 | struct platform_device *ssi_pdev; |
| 163 | struct imx_priv *priv = &card_priv; |
| 164 | struct i2c_client *codec_dev; |
| 165 | struct imx_wm8962_data *data; |
| 166 | int int_port, ext_port; |
| 167 | int ret; |
| 168 | |
| 169 | priv->pdev = pdev; |
| 170 | |
| 171 | ret = of_property_read_u32(np, "mux-int-port", &int_port); |
| 172 | if (ret) { |
| 173 | dev_err(&pdev->dev, "mux-int-port missing or invalid\n"); |
| 174 | return ret; |
| 175 | } |
| 176 | ret = of_property_read_u32(np, "mux-ext-port", &ext_port); |
| 177 | if (ret) { |
| 178 | dev_err(&pdev->dev, "mux-ext-port missing or invalid\n"); |
| 179 | return ret; |
| 180 | } |
| 181 | |
| 182 | /* |
| 183 | * The port numbering in the hardware manual starts at 1, while |
| 184 | * the audmux API expects it starts at 0. |
| 185 | */ |
| 186 | int_port--; |
| 187 | ext_port--; |
| 188 | ret = imx_audmux_v2_configure_port(int_port, |
| 189 | IMX_AUDMUX_V2_PTCR_SYN | |
| 190 | IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) | |
| 191 | IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) | |
| 192 | IMX_AUDMUX_V2_PTCR_TFSDIR | |
| 193 | IMX_AUDMUX_V2_PTCR_TCLKDIR, |
| 194 | IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port)); |
| 195 | if (ret) { |
| 196 | dev_err(&pdev->dev, "audmux internal port setup failed\n"); |
| 197 | return ret; |
| 198 | } |
Dan Carpenter | 474ff0a | 2015-06-10 18:37:23 +0300 | [diff] [blame] | 199 | ret = imx_audmux_v2_configure_port(ext_port, |
Nicolin Chen | 8de2ae2 | 2013-06-11 02:43:30 +0800 | [diff] [blame] | 200 | IMX_AUDMUX_V2_PTCR_SYN, |
| 201 | IMX_AUDMUX_V2_PDCR_RXDSEL(int_port)); |
| 202 | if (ret) { |
| 203 | dev_err(&pdev->dev, "audmux external port setup failed\n"); |
| 204 | return ret; |
| 205 | } |
| 206 | |
| 207 | ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0); |
| 208 | codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0); |
| 209 | if (!ssi_np || !codec_np) { |
| 210 | dev_err(&pdev->dev, "phandle missing or invalid\n"); |
| 211 | ret = -EINVAL; |
| 212 | goto fail; |
| 213 | } |
| 214 | |
| 215 | ssi_pdev = of_find_device_by_node(ssi_np); |
| 216 | if (!ssi_pdev) { |
| 217 | dev_err(&pdev->dev, "failed to find SSI platform device\n"); |
| 218 | ret = -EINVAL; |
| 219 | goto fail; |
| 220 | } |
| 221 | codec_dev = of_find_i2c_device_by_node(codec_np); |
Lars-Peter Clausen | 40df249 | 2013-09-29 10:51:05 +0200 | [diff] [blame] | 222 | if (!codec_dev || !codec_dev->dev.driver) { |
Nicolin Chen | 8de2ae2 | 2013-06-11 02:43:30 +0800 | [diff] [blame] | 223 | dev_err(&pdev->dev, "failed to find codec platform device\n"); |
Fabio Estevam | d8a14e3 | 2013-07-18 15:07:48 -0300 | [diff] [blame] | 224 | ret = -EINVAL; |
| 225 | goto fail; |
Nicolin Chen | 8de2ae2 | 2013-06-11 02:43:30 +0800 | [diff] [blame] | 226 | } |
| 227 | |
| 228 | data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); |
| 229 | if (!data) { |
| 230 | ret = -ENOMEM; |
| 231 | goto fail; |
| 232 | } |
| 233 | |
| 234 | data->codec_clk = devm_clk_get(&codec_dev->dev, NULL); |
| 235 | if (IS_ERR(data->codec_clk)) { |
| 236 | ret = PTR_ERR(data->codec_clk); |
| 237 | dev_err(&codec_dev->dev, "failed to get codec clk: %d\n", ret); |
| 238 | goto fail; |
| 239 | } |
| 240 | |
| 241 | data->clk_frequency = clk_get_rate(data->codec_clk); |
| 242 | ret = clk_prepare_enable(data->codec_clk); |
| 243 | if (ret) { |
| 244 | dev_err(&codec_dev->dev, "failed to enable codec clk: %d\n", ret); |
| 245 | goto fail; |
| 246 | } |
| 247 | |
| 248 | data->dai.name = "HiFi"; |
| 249 | data->dai.stream_name = "HiFi"; |
| 250 | data->dai.codec_dai_name = "wm8962"; |
| 251 | data->dai.codec_of_node = codec_np; |
| 252 | data->dai.cpu_dai_name = dev_name(&ssi_pdev->dev); |
| 253 | data->dai.platform_of_node = ssi_np; |
| 254 | data->dai.ops = &imx_hifi_ops; |
| 255 | data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
| 256 | SND_SOC_DAIFMT_CBM_CFM; |
| 257 | |
| 258 | data->card.dev = &pdev->dev; |
| 259 | ret = snd_soc_of_parse_card_name(&data->card, "model"); |
| 260 | if (ret) |
| 261 | goto clk_fail; |
| 262 | ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing"); |
| 263 | if (ret) |
| 264 | goto clk_fail; |
| 265 | data->card.num_links = 1; |
Fabio Estevam | 0984f34 | 2015-01-14 11:56:22 -0200 | [diff] [blame] | 266 | data->card.owner = THIS_MODULE; |
Nicolin Chen | 8de2ae2 | 2013-06-11 02:43:30 +0800 | [diff] [blame] | 267 | data->card.dai_link = &data->dai; |
| 268 | data->card.dapm_widgets = imx_wm8962_dapm_widgets; |
| 269 | data->card.num_dapm_widgets = ARRAY_SIZE(imx_wm8962_dapm_widgets); |
| 270 | |
| 271 | data->card.late_probe = imx_wm8962_late_probe; |
| 272 | data->card.set_bias_level = imx_wm8962_set_bias_level; |
| 273 | |
Shawn Guo | 47cf84e | 2014-02-08 13:20:35 +0800 | [diff] [blame] | 274 | platform_set_drvdata(pdev, &data->card); |
| 275 | snd_soc_card_set_drvdata(&data->card, data); |
| 276 | |
Sachin Kamat | eafbae2 | 2013-09-17 09:42:48 +0530 | [diff] [blame] | 277 | ret = devm_snd_soc_register_card(&pdev->dev, &data->card); |
Nicolin Chen | 8de2ae2 | 2013-06-11 02:43:30 +0800 | [diff] [blame] | 278 | if (ret) { |
| 279 | dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret); |
| 280 | goto clk_fail; |
| 281 | } |
| 282 | |
Nicolin Chen | 8de2ae2 | 2013-06-11 02:43:30 +0800 | [diff] [blame] | 283 | of_node_put(ssi_np); |
| 284 | of_node_put(codec_np); |
| 285 | |
| 286 | return 0; |
| 287 | |
| 288 | clk_fail: |
Dan Carpenter | ea8e5e5 | 2013-11-08 12:54:44 +0300 | [diff] [blame] | 289 | clk_disable_unprepare(data->codec_clk); |
Nicolin Chen | 8de2ae2 | 2013-06-11 02:43:30 +0800 | [diff] [blame] | 290 | fail: |
Fabio Estevam | 051c77e | 2014-10-07 15:13:24 -0300 | [diff] [blame] | 291 | of_node_put(ssi_np); |
| 292 | of_node_put(codec_np); |
Nicolin Chen | 8de2ae2 | 2013-06-11 02:43:30 +0800 | [diff] [blame] | 293 | |
| 294 | return ret; |
| 295 | } |
| 296 | |
| 297 | static int imx_wm8962_remove(struct platform_device *pdev) |
| 298 | { |
Shawn Guo | 47cf84e | 2014-02-08 13:20:35 +0800 | [diff] [blame] | 299 | struct snd_soc_card *card = platform_get_drvdata(pdev); |
| 300 | struct imx_wm8962_data *data = snd_soc_card_get_drvdata(card); |
Nicolin Chen | 8de2ae2 | 2013-06-11 02:43:30 +0800 | [diff] [blame] | 301 | |
| 302 | if (!IS_ERR(data->codec_clk)) |
| 303 | clk_disable_unprepare(data->codec_clk); |
Nicolin Chen | 8de2ae2 | 2013-06-11 02:43:30 +0800 | [diff] [blame] | 304 | |
| 305 | return 0; |
| 306 | } |
| 307 | |
| 308 | static const struct of_device_id imx_wm8962_dt_ids[] = { |
| 309 | { .compatible = "fsl,imx-audio-wm8962", }, |
| 310 | { /* sentinel */ } |
| 311 | }; |
| 312 | MODULE_DEVICE_TABLE(of, imx_wm8962_dt_ids); |
| 313 | |
| 314 | static struct platform_driver imx_wm8962_driver = { |
| 315 | .driver = { |
| 316 | .name = "imx-wm8962", |
Nicolin Chen | 1abe729 | 2013-10-24 18:15:29 +0800 | [diff] [blame] | 317 | .pm = &snd_soc_pm_ops, |
Nicolin Chen | 8de2ae2 | 2013-06-11 02:43:30 +0800 | [diff] [blame] | 318 | .of_match_table = imx_wm8962_dt_ids, |
| 319 | }, |
| 320 | .probe = imx_wm8962_probe, |
| 321 | .remove = imx_wm8962_remove, |
| 322 | }; |
| 323 | module_platform_driver(imx_wm8962_driver); |
| 324 | |
| 325 | MODULE_AUTHOR("Freescale Semiconductor, Inc."); |
| 326 | MODULE_DESCRIPTION("Freescale i.MX WM8962 ASoC machine driver"); |
| 327 | MODULE_LICENSE("GPL v2"); |
| 328 | MODULE_ALIAS("platform:imx-wm8962"); |