#include <linux/module.h>
#include <linux/init.h>
+#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <sound/core.h>
}
EXPORT_SYMBOL_GPL(adau17x1_has_dsp);
+static int adau17x1_set_dai_pll(struct snd_soc_dai *dai, int pll_id,
+ int source, unsigned int freq_in, unsigned int freq_out)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ struct adau *adau = snd_soc_codec_get_drvdata(codec);
+ int ret;
+
+ if (freq_in < 8000000 || freq_in > 27000000)
+ return -EINVAL;
+
+ ret = adau_calc_pll_cfg(freq_in, freq_out, adau->pll_regs);
+ if (ret < 0)
+ return ret;
+
+ /* The PLL register is 6 bytes long and can only be written at once. */
+ ret = regmap_raw_write(adau->regmap, ADAU17X1_PLL_CONTROL,
+ adau->pll_regs, ARRAY_SIZE(adau->pll_regs));
+ if (ret)
+ return ret;
+
+ adau->pll_freq = freq_out;
+
+ return 0;
+}
+
+static int adau17x1_set_dai_sysclk(struct snd_soc_dai *dai,
+ int clk_id, unsigned int freq, int dir)
+{
+ struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(dai->codec);
+ struct adau *adau = snd_soc_codec_get_drvdata(dai->codec);
+ bool is_pll;
+ bool was_pll;
+
+ switch (clk_id) {
+ case ADAU17X1_CLK_SRC_MCLK:
+ is_pll = false;
+ break;
+ case ADAU17X1_CLK_SRC_PLL_AUTO:
+ if (!adau->mclk)
+ return -EINVAL;
+ /* Fall-through */
+ case ADAU17X1_CLK_SRC_PLL:
+ is_pll = true;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (adau->clk_src) {
+ case ADAU17X1_CLK_SRC_MCLK:
+ was_pll = false;
+ break;
+ case ADAU17X1_CLK_SRC_PLL:
+ case ADAU17X1_CLK_SRC_PLL_AUTO:
+ was_pll = true;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ adau->sysclk = freq;
+
+ if (is_pll != was_pll) {
+ if (is_pll) {
+ snd_soc_dapm_add_routes(dapm,
+ &adau17x1_dapm_pll_route, 1);
+ } else {
+ snd_soc_dapm_del_routes(dapm,
+ &adau17x1_dapm_pll_route, 1);
+ }
+ }
+
+ adau->clk_src = clk_id;
+
+ return 0;
+}
+
+static int adau17x1_auto_pll(struct snd_soc_dai *dai,
+ struct snd_pcm_hw_params *params)
+{
+ struct adau *adau = snd_soc_dai_get_drvdata(dai);
+ unsigned int pll_rate;
+
+ switch (params_rate(params)) {
+ case 48000:
+ case 8000:
+ case 12000:
+ case 16000:
+ case 24000:
+ case 32000:
+ case 96000:
+ pll_rate = 48000 * 1024;
+ break;
+ case 44100:
+ case 7350:
+ case 11025:
+ case 14700:
+ case 22050:
+ case 29400:
+ case 88200:
+ pll_rate = 44100 * 1024;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return adau17x1_set_dai_pll(dai, ADAU17X1_PLL, ADAU17X1_PLL_SRC_MCLK,
+ clk_get_rate(adau->mclk), pll_rate);
+}
+
static int adau17x1_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
{
unsigned int freq;
int ret;
- if (adau->clk_src == ADAU17X1_CLK_SRC_PLL)
+ switch (adau->clk_src) {
+ case ADAU17X1_CLK_SRC_PLL_AUTO:
+ ret = adau17x1_auto_pll(dai, params);
+ if (ret)
+ return ret;
+ /* Fall-through */
+ case ADAU17X1_CLK_SRC_PLL:
freq = adau->pll_freq;
- else
+ break;
+ default:
freq = adau->sysclk;
+ break;
+ }
if (freq % params_rate(params) != 0)
return -EINVAL;
ADAU17X1_SERIAL_PORT1_DELAY_MASK, val);
}
-static int adau17x1_set_dai_pll(struct snd_soc_dai *dai, int pll_id,
- int source, unsigned int freq_in, unsigned int freq_out)
-{
- struct snd_soc_codec *codec = dai->codec;
- struct adau *adau = snd_soc_codec_get_drvdata(codec);
- int ret;
-
- if (freq_in < 8000000 || freq_in > 27000000)
- return -EINVAL;
-
- ret = adau_calc_pll_cfg(freq_in, freq_out, adau->pll_regs);
- if (ret < 0)
- return ret;
-
- /* The PLL register is 6 bytes long and can only be written at once. */
- ret = regmap_raw_write(adau->regmap, ADAU17X1_PLL_CONTROL,
- adau->pll_regs, ARRAY_SIZE(adau->pll_regs));
- if (ret)
- return ret;
-
- adau->pll_freq = freq_out;
-
- return 0;
-}
-
-static int adau17x1_set_dai_sysclk(struct snd_soc_dai *dai,
- int clk_id, unsigned int freq, int dir)
-{
- struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(dai->codec);
- struct adau *adau = snd_soc_codec_get_drvdata(dai->codec);
-
- switch (clk_id) {
- case ADAU17X1_CLK_SRC_MCLK:
- case ADAU17X1_CLK_SRC_PLL:
- break;
- default:
- return -EINVAL;
- }
-
- adau->sysclk = freq;
-
- if (adau->clk_src != clk_id) {
- if (clk_id == ADAU17X1_CLK_SRC_PLL) {
- snd_soc_dapm_add_routes(dapm,
- &adau17x1_dapm_pll_route, 1);
- } else {
- snd_soc_dapm_del_routes(dapm,
- &adau17x1_dapm_pll_route, 1);
- }
- }
-
- adau->clk_src = clk_id;
-
- return 0;
-}
-
static int adau17x1_set_dai_fmt(struct snd_soc_dai *dai,
unsigned int fmt)
{
ret = snd_soc_dapm_add_routes(dapm, adau17x1_no_dsp_dapm_routes,
ARRAY_SIZE(adau17x1_no_dsp_dapm_routes));
}
+
+ if (adau->clk_src != ADAU17X1_CLK_SRC_MCLK)
+ snd_soc_dapm_add_routes(dapm, &adau17x1_dapm_pll_route, 1);
+
return ret;
}
EXPORT_SYMBOL_GPL(adau17x1_add_routes);
const char *firmware_name)
{
struct adau *adau;
+ int ret;
if (IS_ERR(regmap))
return PTR_ERR(regmap);
if (!adau)
return -ENOMEM;
+ adau->mclk = devm_clk_get(dev, "mclk");
+ if (IS_ERR(adau->mclk)) {
+ if (PTR_ERR(adau->mclk) != -ENOENT)
+ return PTR_ERR(adau->mclk);
+ /* Clock is optional (for the driver) */
+ adau->mclk = NULL;
+ } else if (adau->mclk) {
+ adau->clk_src = ADAU17X1_CLK_SRC_PLL_AUTO;
+
+ /*
+ * Any valid PLL output rate will work at this point, use one
+ * that is likely to be chosen later as well. The register will
+ * be written when the PLL is powered up for the first time.
+ */
+ ret = adau_calc_pll_cfg(clk_get_rate(adau->mclk), 48000 * 1024,
+ adau->pll_regs);
+ if (ret < 0)
+ return ret;
+
+ ret = clk_prepare_enable(adau->mclk);
+ if (ret)
+ return ret;
+ }
+
adau->regmap = regmap;
adau->switch_mode = switch_mode;
adau->type = type;
}
EXPORT_SYMBOL_GPL(adau17x1_probe);
+void adau17x1_remove(struct device *dev)
+{
+ struct adau *adau = dev_get_drvdata(dev);
+
+ snd_soc_unregister_codec(dev);
+ if (adau->mclk)
+ clk_disable_unprepare(adau->mclk);
+}
+EXPORT_SYMBOL_GPL(adau17x1_remove);
+
MODULE_DESCRIPTION("ASoC ADAU1X61/ADAU1X81 common code");
MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
MODULE_LICENSE("GPL");
git.samba.org / sfrench / cifs-2.6.git / commitdiff