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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> | |
687b81d0 | 18 | #include <linux/i2c.h> |
8de2ae2a NC |
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 | { | |
72 | struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai; | |
73 | struct imx_priv *priv = &card_priv; | |
74 | struct imx_wm8962_data *data = platform_get_drvdata(priv->pdev); | |
75 | struct device *dev = &priv->pdev->dev; | |
76 | unsigned int pll_out; | |
77 | int ret; | |
78 | ||
79 | if (dapm->dev != codec_dai->dev) | |
80 | return 0; | |
81 | ||
82 | switch (level) { | |
83 | case SND_SOC_BIAS_PREPARE: | |
84 | if (dapm->bias_level == SND_SOC_BIAS_STANDBY) { | |
85 | if (sample_format == SNDRV_PCM_FORMAT_S24_LE) | |
86 | pll_out = sample_rate * 384; | |
87 | else | |
88 | pll_out = sample_rate * 256; | |
89 | ||
90 | ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL, | |
91 | WM8962_FLL_MCLK, data->clk_frequency, | |
92 | pll_out); | |
93 | if (ret < 0) { | |
94 | dev_err(dev, "failed to start FLL: %d\n", ret); | |
95 | return ret; | |
96 | } | |
97 | ||
98 | ret = snd_soc_dai_set_sysclk(codec_dai, | |
99 | WM8962_SYSCLK_FLL, pll_out, | |
100 | SND_SOC_CLOCK_IN); | |
101 | if (ret < 0) { | |
102 | dev_err(dev, "failed to set SYSCLK: %d\n", ret); | |
103 | return ret; | |
104 | } | |
105 | } | |
106 | break; | |
107 | ||
108 | case SND_SOC_BIAS_STANDBY: | |
109 | if (dapm->bias_level == SND_SOC_BIAS_PREPARE) { | |
110 | ret = snd_soc_dai_set_sysclk(codec_dai, | |
111 | WM8962_SYSCLK_MCLK, data->clk_frequency, | |
112 | SND_SOC_CLOCK_IN); | |
113 | if (ret < 0) { | |
114 | dev_err(dev, | |
115 | "failed to switch away from FLL: %d\n", | |
116 | ret); | |
117 | return ret; | |
118 | } | |
119 | ||
120 | ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL, | |
121 | 0, 0, 0); | |
122 | if (ret < 0) { | |
123 | dev_err(dev, "failed to stop FLL: %d\n", ret); | |
124 | return ret; | |
125 | } | |
126 | } | |
127 | break; | |
128 | ||
129 | default: | |
130 | break; | |
131 | } | |
132 | ||
133 | dapm->bias_level = level; | |
134 | ||
135 | return 0; | |
136 | } | |
137 | ||
138 | static int imx_wm8962_late_probe(struct snd_soc_card *card) | |
139 | { | |
140 | struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai; | |
141 | struct imx_priv *priv = &card_priv; | |
142 | struct imx_wm8962_data *data = platform_get_drvdata(priv->pdev); | |
143 | struct device *dev = &priv->pdev->dev; | |
144 | int ret; | |
145 | ||
146 | ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK, | |
147 | data->clk_frequency, SND_SOC_CLOCK_IN); | |
148 | if (ret < 0) | |
149 | dev_err(dev, "failed to set sysclk in %s\n", __func__); | |
150 | ||
151 | return ret; | |
152 | } | |
153 | ||
154 | static int imx_wm8962_probe(struct platform_device *pdev) | |
155 | { | |
156 | struct device_node *np = pdev->dev.of_node; | |
157 | struct device_node *ssi_np, *codec_np; | |
158 | struct platform_device *ssi_pdev; | |
159 | struct imx_priv *priv = &card_priv; | |
160 | struct i2c_client *codec_dev; | |
161 | struct imx_wm8962_data *data; | |
162 | int int_port, ext_port; | |
163 | int ret; | |
164 | ||
165 | priv->pdev = pdev; | |
166 | ||
167 | ret = of_property_read_u32(np, "mux-int-port", &int_port); | |
168 | if (ret) { | |
169 | dev_err(&pdev->dev, "mux-int-port missing or invalid\n"); | |
170 | return ret; | |
171 | } | |
172 | ret = of_property_read_u32(np, "mux-ext-port", &ext_port); | |
173 | if (ret) { | |
174 | dev_err(&pdev->dev, "mux-ext-port missing or invalid\n"); | |
175 | return ret; | |
176 | } | |
177 | ||
178 | /* | |
179 | * The port numbering in the hardware manual starts at 1, while | |
180 | * the audmux API expects it starts at 0. | |
181 | */ | |
182 | int_port--; | |
183 | ext_port--; | |
184 | ret = imx_audmux_v2_configure_port(int_port, | |
185 | IMX_AUDMUX_V2_PTCR_SYN | | |
186 | IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) | | |
187 | IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) | | |
188 | IMX_AUDMUX_V2_PTCR_TFSDIR | | |
189 | IMX_AUDMUX_V2_PTCR_TCLKDIR, | |
190 | IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port)); | |
191 | if (ret) { | |
192 | dev_err(&pdev->dev, "audmux internal port setup failed\n"); | |
193 | return ret; | |
194 | } | |
195 | imx_audmux_v2_configure_port(ext_port, | |
196 | IMX_AUDMUX_V2_PTCR_SYN, | |
197 | IMX_AUDMUX_V2_PDCR_RXDSEL(int_port)); | |
198 | if (ret) { | |
199 | dev_err(&pdev->dev, "audmux external port setup failed\n"); | |
200 | return ret; | |
201 | } | |
202 | ||
203 | ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0); | |
204 | codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0); | |
205 | if (!ssi_np || !codec_np) { | |
206 | dev_err(&pdev->dev, "phandle missing or invalid\n"); | |
207 | ret = -EINVAL; | |
208 | goto fail; | |
209 | } | |
210 | ||
211 | ssi_pdev = of_find_device_by_node(ssi_np); | |
212 | if (!ssi_pdev) { | |
213 | dev_err(&pdev->dev, "failed to find SSI platform device\n"); | |
214 | ret = -EINVAL; | |
215 | goto fail; | |
216 | } | |
217 | codec_dev = of_find_i2c_device_by_node(codec_np); | |
218 | if (!codec_dev || !codec_dev->driver) { | |
219 | dev_err(&pdev->dev, "failed to find codec platform device\n"); | |
d8a14e30 FE |
220 | ret = -EINVAL; |
221 | goto fail; | |
8de2ae2a NC |
222 | } |
223 | ||
224 | data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); | |
225 | if (!data) { | |
226 | ret = -ENOMEM; | |
227 | goto fail; | |
228 | } | |
229 | ||
230 | data->codec_clk = devm_clk_get(&codec_dev->dev, NULL); | |
231 | if (IS_ERR(data->codec_clk)) { | |
232 | ret = PTR_ERR(data->codec_clk); | |
233 | dev_err(&codec_dev->dev, "failed to get codec clk: %d\n", ret); | |
234 | goto fail; | |
235 | } | |
236 | ||
237 | data->clk_frequency = clk_get_rate(data->codec_clk); | |
238 | ret = clk_prepare_enable(data->codec_clk); | |
239 | if (ret) { | |
240 | dev_err(&codec_dev->dev, "failed to enable codec clk: %d\n", ret); | |
241 | goto fail; | |
242 | } | |
243 | ||
244 | data->dai.name = "HiFi"; | |
245 | data->dai.stream_name = "HiFi"; | |
246 | data->dai.codec_dai_name = "wm8962"; | |
247 | data->dai.codec_of_node = codec_np; | |
248 | data->dai.cpu_dai_name = dev_name(&ssi_pdev->dev); | |
249 | data->dai.platform_of_node = ssi_np; | |
250 | data->dai.ops = &imx_hifi_ops; | |
251 | data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | | |
252 | SND_SOC_DAIFMT_CBM_CFM; | |
253 | ||
254 | data->card.dev = &pdev->dev; | |
255 | ret = snd_soc_of_parse_card_name(&data->card, "model"); | |
256 | if (ret) | |
257 | goto clk_fail; | |
258 | ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing"); | |
259 | if (ret) | |
260 | goto clk_fail; | |
261 | data->card.num_links = 1; | |
262 | data->card.dai_link = &data->dai; | |
263 | data->card.dapm_widgets = imx_wm8962_dapm_widgets; | |
264 | data->card.num_dapm_widgets = ARRAY_SIZE(imx_wm8962_dapm_widgets); | |
265 | ||
266 | data->card.late_probe = imx_wm8962_late_probe; | |
267 | data->card.set_bias_level = imx_wm8962_set_bias_level; | |
268 | ||
269 | ret = snd_soc_register_card(&data->card); | |
270 | if (ret) { | |
271 | dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret); | |
272 | goto clk_fail; | |
273 | } | |
274 | ||
275 | platform_set_drvdata(pdev, data); | |
276 | of_node_put(ssi_np); | |
277 | of_node_put(codec_np); | |
278 | ||
279 | return 0; | |
280 | ||
281 | clk_fail: | |
282 | if (!IS_ERR(data->codec_clk)) | |
283 | clk_disable_unprepare(data->codec_clk); | |
284 | fail: | |
285 | if (ssi_np) | |
286 | of_node_put(ssi_np); | |
287 | if (codec_np) | |
288 | of_node_put(codec_np); | |
289 | ||
290 | return ret; | |
291 | } | |
292 | ||
293 | static int imx_wm8962_remove(struct platform_device *pdev) | |
294 | { | |
295 | struct imx_wm8962_data *data = platform_get_drvdata(pdev); | |
296 | ||
297 | if (!IS_ERR(data->codec_clk)) | |
298 | clk_disable_unprepare(data->codec_clk); | |
299 | snd_soc_unregister_card(&data->card); | |
300 | ||
301 | return 0; | |
302 | } | |
303 | ||
304 | static const struct of_device_id imx_wm8962_dt_ids[] = { | |
305 | { .compatible = "fsl,imx-audio-wm8962", }, | |
306 | { /* sentinel */ } | |
307 | }; | |
308 | MODULE_DEVICE_TABLE(of, imx_wm8962_dt_ids); | |
309 | ||
310 | static struct platform_driver imx_wm8962_driver = { | |
311 | .driver = { | |
312 | .name = "imx-wm8962", | |
313 | .owner = THIS_MODULE, | |
314 | .of_match_table = imx_wm8962_dt_ids, | |
315 | }, | |
316 | .probe = imx_wm8962_probe, | |
317 | .remove = imx_wm8962_remove, | |
318 | }; | |
319 | module_platform_driver(imx_wm8962_driver); | |
320 | ||
321 | MODULE_AUTHOR("Freescale Semiconductor, Inc."); | |
322 | MODULE_DESCRIPTION("Freescale i.MX WM8962 ASoC machine driver"); | |
323 | MODULE_LICENSE("GPL v2"); | |
324 | MODULE_ALIAS("platform:imx-wm8962"); |