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Diffstat (limited to 'sound/soc/pxa/zylonite.c')
-rw-r--r--sound/soc/pxa/zylonite.c184
1 files changed, 124 insertions, 60 deletions
diff --git a/sound/soc/pxa/zylonite.c b/sound/soc/pxa/zylonite.c
index f8e9ecd589d..23bf991e95d 100644
--- a/sound/soc/pxa/zylonite.c
+++ b/sound/soc/pxa/zylonite.c
@@ -14,18 +14,28 @@
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/device.h>
+#include <linux/clk.h>
#include <linux/i2c.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
-#include <sound/soc-dapm.h>
#include "../codecs/wm9713.h"
-#include "pxa2xx-pcm.h"
#include "pxa2xx-ac97.h"
#include "pxa-ssp.h"
+/*
+ * There is a physical switch SW15 on the board which changes the MCLK
+ * for the WM9713 between the standard AC97 master clock and the
+ * output of the CLK_POUT signal from the PXA.
+ */
+static int clk_pout;
+module_param(clk_pout, int, 0);
+MODULE_PARM_DESC(clk_pout, "Use CLK_POUT as WM9713 MCLK (SW15 on board).");
+
+static struct clk *pout;
+
static struct snd_soc_card zylonite;
static const struct snd_soc_dapm_widget zylonite_dapm_widgets[] = {
@@ -59,23 +69,12 @@ static const struct snd_soc_dapm_route audio_map[] = {
{ "Multiactor", NULL, "SPKR" },
};
-static int zylonite_wm9713_init(struct snd_soc_codec *codec)
+static int zylonite_wm9713_init(struct snd_soc_pcm_runtime *rtd)
{
- /* Currently we only support use of the AC97 clock here. If
- * CLK_POUT is selected by SW15 then the clock API will need
- * to be used to request and enable it here.
- */
-
- snd_soc_dapm_new_controls(codec, zylonite_dapm_widgets,
- ARRAY_SIZE(zylonite_dapm_widgets));
-
- snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
+ if (clk_pout)
+ snd_soc_dai_set_pll(rtd->codec_dai, 0, 0,
+ clk_get_rate(pout), 0);
- /* Static setup for now */
- snd_soc_dapm_enable_pin(codec, "Headphone");
- snd_soc_dapm_enable_pin(codec, "Headset Earpiece");
-
- snd_soc_dapm_sync(codec);
return 0;
}
@@ -83,63 +82,61 @@ static int zylonite_voice_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
- struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
+ struct snd_soc_dai *codec_dai = rtd->codec_dai;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
unsigned int pll_out = 0;
- unsigned int acds = 0;
unsigned int wm9713_div = 0;
int ret = 0;
+ int rate = params_rate(params);
+ int width = snd_pcm_format_physical_width(params_format(params));
- switch (params_rate(params)) {
+ /* Only support ratios that we can generate neatly from the AC97
+ * based master clock - in particular, this excludes 44.1kHz.
+ * In most applications the voice DAC will be used for telephony
+ * data so multiples of 8kHz will be the common case.
+ */
+ switch (rate) {
case 8000:
wm9713_div = 12;
- pll_out = 2048000;
break;
case 16000:
wm9713_div = 6;
- pll_out = 4096000;
break;
case 48000:
- default:
wm9713_div = 2;
- pll_out = 12288000;
- acds = 1;
break;
+ default:
+ /* Don't support OSS emulation */
+ return -EINVAL;
}
- ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
- SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
- if (ret < 0)
- return ret;
-
- ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
- SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
- if (ret < 0)
- return ret;
+ /* Add 1 to the width for the leading clock cycle */
+ pll_out = rate * (width + 1) * 8;
- ret = snd_soc_dai_set_tdm_slot(cpu_dai,
- params_channels(params),
- params_channels(params));
+ ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_AUDIO, 0, 1);
if (ret < 0)
return ret;
- ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, pll_out);
+ ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, 0, pll_out);
if (ret < 0)
return ret;
- ret = snd_soc_dai_set_clkdiv(cpu_dai, PXA_SSP_AUDIO_DIV_ACDS, acds);
+ if (clk_pout)
+ ret = snd_soc_dai_set_clkdiv(codec_dai, WM9713_PCMCLK_PLL_DIV,
+ WM9713_PCMDIV(wm9713_div));
+ else
+ ret = snd_soc_dai_set_clkdiv(codec_dai, WM9713_PCMCLK_DIV,
+ WM9713_PCMDIV(wm9713_div));
if (ret < 0)
return ret;
- ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_AUDIO, 0, 1);
+ ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
+ SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
if (ret < 0)
return ret;
- /* Note that if the PLL is in use the WM9713_PCMCLK_PLL_DIV needs
- * to be set instead.
- */
- ret = snd_soc_dai_set_clkdiv(codec_dai, WM9713_PCMCLK_DIV,
- WM9713_PCMDIV(wm9713_div));
+ ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
+ SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
if (ret < 0)
return ret;
@@ -154,35 +151,104 @@ static struct snd_soc_dai_link zylonite_dai[] = {
{
.name = "AC97",
.stream_name = "AC97 HiFi",
- .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI],
- .codec_dai = &wm9713_dai[WM9713_DAI_AC97_HIFI],
+ .codec_name = "wm9713-codec",
+ .platform_name = "pxa-pcm-audio",
+ .cpu_dai_name = "pxa2xx-ac97",
+ .codec_dai_name = "wm9713-hifi",
.init = zylonite_wm9713_init,
},
{
.name = "AC97 Aux",
.stream_name = "AC97 Aux",
- .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX],
- .codec_dai = &wm9713_dai[WM9713_DAI_AC97_AUX],
+ .codec_name = "wm9713-codec",
+ .platform_name = "pxa-pcm-audio",
+ .cpu_dai_name = "pxa2xx-ac97-aux",
+ .codec_dai_name = "wm9713-aux",
},
{
.name = "WM9713 Voice",
.stream_name = "WM9713 Voice",
- .cpu_dai = &pxa_ssp_dai[PXA_DAI_SSP3],
- .codec_dai = &wm9713_dai[WM9713_DAI_PCM_VOICE],
+ .codec_name = "wm9713-codec",
+ .platform_name = "pxa-pcm-audio",
+ .cpu_dai_name = "pxa-ssp-dai.2",
+ .codec_dai_name = "wm9713-voice",
.ops = &zylonite_voice_ops,
},
};
+static int zylonite_probe(struct snd_soc_card *card)
+{
+ int ret;
+
+ if (clk_pout) {
+ pout = clk_get(NULL, "CLK_POUT");
+ if (IS_ERR(pout)) {
+ dev_err(card->dev, "Unable to obtain CLK_POUT: %ld\n",
+ PTR_ERR(pout));
+ return PTR_ERR(pout);
+ }
+
+ ret = clk_enable(pout);
+ if (ret != 0) {
+ dev_err(card->dev, "Unable to enable CLK_POUT: %d\n",
+ ret);
+ clk_put(pout);
+ return ret;
+ }
+
+ dev_dbg(card->dev, "MCLK enabled at %luHz\n",
+ clk_get_rate(pout));
+ }
+
+ return 0;
+}
+
+static int zylonite_remove(struct snd_soc_card *card)
+{
+ if (clk_pout) {
+ clk_disable(pout);
+ clk_put(pout);
+ }
+
+ return 0;
+}
+
+static int zylonite_suspend_post(struct snd_soc_card *card)
+{
+ if (clk_pout)
+ clk_disable(pout);
+
+ return 0;
+}
+
+static int zylonite_resume_pre(struct snd_soc_card *card)
+{
+ int ret = 0;
+
+ if (clk_pout) {
+ ret = clk_enable(pout);
+ if (ret != 0)
+ dev_err(card->dev, "Unable to enable CLK_POUT: %d\n",
+ ret);
+ }
+
+ return ret;
+}
+
static struct snd_soc_card zylonite = {
.name = "Zylonite",
- .platform = &pxa2xx_soc_platform,
+ .owner = THIS_MODULE,
+ .probe = &zylonite_probe,
+ .remove = &zylonite_remove,
+ .suspend_post = &zylonite_suspend_post,
+ .resume_pre = &zylonite_resume_pre,
.dai_link = zylonite_dai,
.num_links = ARRAY_SIZE(zylonite_dai),
-};
-static struct snd_soc_device zylonite_snd_ac97_devdata = {
- .card = &zylonite,
- .codec_dev = &soc_codec_dev_wm9713,
+ .dapm_widgets = zylonite_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(zylonite_dapm_widgets),
+ .dapm_routes = audio_map,
+ .num_dapm_routes = ARRAY_SIZE(audio_map),
};
static struct platform_device *zylonite_snd_ac97_device;
@@ -195,9 +261,7 @@ static int __init zylonite_init(void)
if (!zylonite_snd_ac97_device)
return -ENOMEM;
- platform_set_drvdata(zylonite_snd_ac97_device,
- &zylonite_snd_ac97_devdata);
- zylonite_snd_ac97_devdata.dev = &zylonite_snd_ac97_device->dev;
+ platform_set_drvdata(zylonite_snd_ac97_device, &zylonite);
ret = platform_device_add(zylonite_snd_ac97_device);
if (ret != 0)
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-10 19:24:44 +0000