We continue to allow the AB8500 CODEC to be registered via the AB8500 Multi Functional Device API, only this time we extract its configuration from the Device Tree binary.
CC: alsa-devel@alsa-project.org Signed-off-by: Lee Jones lee.jones@linaro.org --- include/linux/mfd/abx500/ab8500-codec.h | 6 ++- sound/soc/codecs/ab8500-codec.c | 81 +++++++++++++++++++++++++++++++ 2 files changed, 85 insertions(+), 2 deletions(-)
diff --git a/include/linux/mfd/abx500/ab8500-codec.h b/include/linux/mfd/abx500/ab8500-codec.h index dc65292..d707941 100644 --- a/include/linux/mfd/abx500/ab8500-codec.h +++ b/include/linux/mfd/abx500/ab8500-codec.h @@ -23,7 +23,8 @@ enum amic_type { /* Mic-biases */ enum amic_micbias { AMIC_MICBIAS_VAMIC1, - AMIC_MICBIAS_VAMIC2 + AMIC_MICBIAS_VAMIC2, + AMIC_MICBIAS_UNKNOWN };
/* Bias-voltage */ @@ -31,7 +32,8 @@ enum ear_cm_voltage { EAR_CMV_0_95V, EAR_CMV_1_10V, EAR_CMV_1_27V, - EAR_CMV_1_58V + EAR_CMV_1_58V, + EAR_CMV_UNKNOWN };
/* Analog microphone settings */ diff --git a/sound/soc/codecs/ab8500-codec.c b/sound/soc/codecs/ab8500-codec.c index 23b4018..fa80961 100644 --- a/sound/soc/codecs/ab8500-codec.c +++ b/sound/soc/codecs/ab8500-codec.c @@ -34,6 +34,7 @@ #include <linux/mfd/abx500/ab8500-sysctrl.h> #include <linux/mfd/abx500/ab8500-codec.h> #include <linux/regulator/consumer.h> +#include <linux/of.h>
#include <sound/core.h> #include <sound/pcm.h> @@ -2394,9 +2395,65 @@ struct snd_soc_dai_driver ab8500_codec_dai[] = { } };
+static void ab8500_codec_of_probe(struct device *dev, struct device_node *np, + struct ab8500_codec_platform_data *codec) +{ + u32 value; + + if (of_get_property(np, "stericsson,amic1-type-single-ended", NULL)) + codec->amics.mic1_type = AMIC_TYPE_SINGLE_ENDED; + else + codec->amics.mic1_type = AMIC_TYPE_DIFFERENTIAL; + + if (of_get_property(np, "stericsson,amic2-type-single-ended", NULL)) + codec->amics.mic2_type = AMIC_TYPE_SINGLE_ENDED; + else + codec->amics.mic2_type = AMIC_TYPE_DIFFERENTIAL; + + /* Has a non-standard Vamic been requested? */ + if (of_get_property(np, "stericsson,amic1a-bias-vamic2", NULL)) + codec->amics.mic1a_micbias = AMIC_MICBIAS_VAMIC2; + else + codec->amics.mic1a_micbias = AMIC_MICBIAS_VAMIC1; + + if (of_get_property(np, "stericsson,amic1b-bias-vamic2", NULL)) + codec->amics.mic1b_micbias = AMIC_MICBIAS_VAMIC2; + else + codec->amics.mic1b_micbias = AMIC_MICBIAS_VAMIC1; + + if (of_get_property(np, "stericsson,amic2-bias-vamic1", NULL)) + codec->amics.mic2_micbias = AMIC_MICBIAS_VAMIC1; + else + codec->amics.mic2_micbias = AMIC_MICBIAS_VAMIC2; + + if (!of_property_read_u32(np, "stericsson,earpeice-cmv", &value)) { + switch (value) { + case 950 : + codec->ear_cmv = EAR_CMV_0_95V; + break; + case 1100 : + codec->ear_cmv = EAR_CMV_1_10V; + break; + case 1270 : + codec->ear_cmv = EAR_CMV_1_27V; + break; + case 1580 : + codec->ear_cmv = EAR_CMV_1_58V; + break; + default : + codec->ear_cmv = EAR_CMV_UNKNOWN; + dev_err(dev, "Unsuitable earpiece voltage found in DT\n"); + } + } else { + dev_warn(dev, "No earpiece voltage found in DT - using default\n"); + codec->ear_cmv = EAR_CMV_0_95V; + } +} + static int ab8500_codec_probe(struct snd_soc_codec *codec) { struct device *dev = codec->dev; + struct device_node *np = dev->of_node; struct ab8500_codec_drvdata *drvdata = dev_get_drvdata(dev); struct ab8500_platform_data *pdata; struct filter_control *fc; @@ -2407,6 +2464,30 @@ static int ab8500_codec_probe(struct snd_soc_codec *codec) /* Setup AB8500 according to board-settings */ pdata = (struct ab8500_platform_data *)dev_get_platdata(dev->parent);
+ if (np) { + if (!pdata) + pdata = devm_kzalloc(dev, + sizeof(struct ab8500_platform_data), + GFP_KERNEL); + + if (!pdata->codec) + pdata->codec + = devm_kzalloc(dev, + sizeof(struct ab8500_codec_platform_data), + GFP_KERNEL); + + if (!(pdata && pdata->codec)) + return -ENOMEM; + + ab8500_codec_of_probe(dev, np, pdata->codec); + + } else { + if (!(pdata && pdata->codec)) { + dev_err(dev, "No codec platform data or DT found\n"); + return -EINVAL; + } + } + /* Inform SoC Core that we have our own I/O arrangements. */ codec->control_data = (void *)true;