2 * Copyright 2013 Freescale Semiconductor, Inc.
4 * Based on imx-sgtl5000.c
5 * Copyright 2012 Freescale Semiconductor, Inc.
6 * Copyright 2012 Linaro Ltd.
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:
12 * http://www.opensource.org/licenses/gpl-license.html
13 * http://www.gnu.org/copyleft/gpl.html
16 #include <linux/module.h>
17 #include <linux/of_platform.h>
18 #include <linux/i2c.h>
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>
26 #include "../codecs/wm8962.h"
27 #include "imx-audmux.h"
29 #define DAI_NAME_SIZE 32
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
;
41 struct platform_device
*pdev
;
43 static struct imx_priv card_priv
;
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
),
52 static int sample_rate
= 44100;
53 static snd_pcm_format_t sample_format
= SNDRV_PCM_FORMAT_S16_LE
;
55 static int imx_hifi_hw_params(struct snd_pcm_substream
*substream
,
56 struct snd_pcm_hw_params
*params
)
58 sample_rate
= params_rate(params
);
59 sample_format
= params_format(params
);
64 static struct snd_soc_ops imx_hifi_ops
= {
65 .hw_params
= imx_hifi_hw_params
,
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
)
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
= snd_soc_card_get_drvdata(card
);
75 struct device
*dev
= &priv
->pdev
->dev
;
79 if (dapm
->dev
!= codec_dai
->dev
)
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;
88 pll_out
= sample_rate
* 256;
90 ret
= snd_soc_dai_set_pll(codec_dai
, WM8962_FLL
,
91 WM8962_FLL_MCLK
, data
->clk_frequency
,
94 dev_err(dev
, "failed to start FLL: %d\n", ret
);
98 ret
= snd_soc_dai_set_sysclk(codec_dai
,
99 WM8962_SYSCLK_FLL
, pll_out
,
102 dev_err(dev
, "failed to set SYSCLK: %d\n", ret
);
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
,
115 "failed to switch away from FLL: %d\n",
120 ret
= snd_soc_dai_set_pll(codec_dai
, WM8962_FLL
,
123 dev_err(dev
, "failed to stop FLL: %d\n", ret
);
136 static int imx_wm8962_late_probe(struct snd_soc_card
*card
)
138 struct snd_soc_dai
*codec_dai
= card
->rtd
[0].codec_dai
;
139 struct imx_priv
*priv
= &card_priv
;
140 struct imx_wm8962_data
*data
= snd_soc_card_get_drvdata(card
);
141 struct device
*dev
= &priv
->pdev
->dev
;
144 ret
= snd_soc_dai_set_sysclk(codec_dai
, WM8962_SYSCLK_MCLK
,
145 data
->clk_frequency
, SND_SOC_CLOCK_IN
);
147 dev_err(dev
, "failed to set sysclk in %s\n", __func__
);
152 static int imx_wm8962_probe(struct platform_device
*pdev
)
154 struct device_node
*np
= pdev
->dev
.of_node
;
155 struct device_node
*ssi_np
, *codec_np
;
156 struct platform_device
*ssi_pdev
;
157 struct imx_priv
*priv
= &card_priv
;
158 struct i2c_client
*codec_dev
;
159 struct imx_wm8962_data
*data
;
160 int int_port
, ext_port
;
165 ret
= of_property_read_u32(np
, "mux-int-port", &int_port
);
167 dev_err(&pdev
->dev
, "mux-int-port missing or invalid\n");
170 ret
= of_property_read_u32(np
, "mux-ext-port", &ext_port
);
172 dev_err(&pdev
->dev
, "mux-ext-port missing or invalid\n");
177 * The port numbering in the hardware manual starts at 1, while
178 * the audmux API expects it starts at 0.
182 ret
= imx_audmux_v2_configure_port(int_port
,
183 IMX_AUDMUX_V2_PTCR_SYN
|
184 IMX_AUDMUX_V2_PTCR_TFSEL(ext_port
) |
185 IMX_AUDMUX_V2_PTCR_TCSEL(ext_port
) |
186 IMX_AUDMUX_V2_PTCR_TFSDIR
|
187 IMX_AUDMUX_V2_PTCR_TCLKDIR
,
188 IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port
));
190 dev_err(&pdev
->dev
, "audmux internal port setup failed\n");
193 imx_audmux_v2_configure_port(ext_port
,
194 IMX_AUDMUX_V2_PTCR_SYN
,
195 IMX_AUDMUX_V2_PDCR_RXDSEL(int_port
));
197 dev_err(&pdev
->dev
, "audmux external port setup failed\n");
201 ssi_np
= of_parse_phandle(pdev
->dev
.of_node
, "ssi-controller", 0);
202 codec_np
= of_parse_phandle(pdev
->dev
.of_node
, "audio-codec", 0);
203 if (!ssi_np
|| !codec_np
) {
204 dev_err(&pdev
->dev
, "phandle missing or invalid\n");
209 ssi_pdev
= of_find_device_by_node(ssi_np
);
211 dev_err(&pdev
->dev
, "failed to find SSI platform device\n");
215 codec_dev
= of_find_i2c_device_by_node(codec_np
);
216 if (!codec_dev
|| !codec_dev
->dev
.driver
) {
217 dev_err(&pdev
->dev
, "failed to find codec platform device\n");
222 data
= devm_kzalloc(&pdev
->dev
, sizeof(*data
), GFP_KERNEL
);
228 data
->codec_clk
= devm_clk_get(&codec_dev
->dev
, NULL
);
229 if (IS_ERR(data
->codec_clk
)) {
230 ret
= PTR_ERR(data
->codec_clk
);
231 dev_err(&codec_dev
->dev
, "failed to get codec clk: %d\n", ret
);
235 data
->clk_frequency
= clk_get_rate(data
->codec_clk
);
236 ret
= clk_prepare_enable(data
->codec_clk
);
238 dev_err(&codec_dev
->dev
, "failed to enable codec clk: %d\n", ret
);
242 data
->dai
.name
= "HiFi";
243 data
->dai
.stream_name
= "HiFi";
244 data
->dai
.codec_dai_name
= "wm8962";
245 data
->dai
.codec_of_node
= codec_np
;
246 data
->dai
.cpu_dai_name
= dev_name(&ssi_pdev
->dev
);
247 data
->dai
.platform_of_node
= ssi_np
;
248 data
->dai
.ops
= &imx_hifi_ops
;
249 data
->dai
.dai_fmt
= SND_SOC_DAIFMT_I2S
| SND_SOC_DAIFMT_NB_NF
|
250 SND_SOC_DAIFMT_CBM_CFM
;
252 data
->card
.dev
= &pdev
->dev
;
253 ret
= snd_soc_of_parse_card_name(&data
->card
, "model");
256 ret
= snd_soc_of_parse_audio_routing(&data
->card
, "audio-routing");
259 data
->card
.num_links
= 1;
260 data
->card
.dai_link
= &data
->dai
;
261 data
->card
.dapm_widgets
= imx_wm8962_dapm_widgets
;
262 data
->card
.num_dapm_widgets
= ARRAY_SIZE(imx_wm8962_dapm_widgets
);
264 data
->card
.late_probe
= imx_wm8962_late_probe
;
265 data
->card
.set_bias_level
= imx_wm8962_set_bias_level
;
267 platform_set_drvdata(pdev
, &data
->card
);
268 snd_soc_card_set_drvdata(&data
->card
, data
);
270 ret
= devm_snd_soc_register_card(&pdev
->dev
, &data
->card
);
272 dev_err(&pdev
->dev
, "snd_soc_register_card failed (%d)\n", ret
);
277 of_node_put(codec_np
);
282 clk_disable_unprepare(data
->codec_clk
);
287 of_node_put(codec_np
);
292 static int imx_wm8962_remove(struct platform_device
*pdev
)
294 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
295 struct imx_wm8962_data
*data
= snd_soc_card_get_drvdata(card
);
297 if (!IS_ERR(data
->codec_clk
))
298 clk_disable_unprepare(data
->codec_clk
);
303 static const struct of_device_id imx_wm8962_dt_ids
[] = {
304 { .compatible
= "fsl,imx-audio-wm8962", },
307 MODULE_DEVICE_TABLE(of
, imx_wm8962_dt_ids
);
309 static struct platform_driver imx_wm8962_driver
= {
311 .name
= "imx-wm8962",
312 .owner
= THIS_MODULE
,
313 .pm
= &snd_soc_pm_ops
,
314 .of_match_table
= imx_wm8962_dt_ids
,
316 .probe
= imx_wm8962_probe
,
317 .remove
= imx_wm8962_remove
,
319 module_platform_driver(imx_wm8962_driver
);
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");