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authorMark Brown <broonie@opensource.wolfsonmicro.com>2011-10-10 13:31:26 -0400
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-02-21 14:34:48 -0500
commit71d08516b80638a69d5efea4e8cb832c053f9dd9 (patch)
tree5f3c1497024c4669a1443fd30263ed81b591aa15 /sound/soc/soc-core.c
parent2b4bdee2920fb3894f9116f76343f8b31f9e4da8 (diff)
ASoC: core: Add SND_SOC_BYTES control for coefficient blocks
Allow devices to export blocks of registers to the application layer, intended for use for reading and writing coefficient data which can't usefully be worked with by the kernel at runtime (for example, due to requiring complex and expensive calculations or being the results of callibration procedures). Currently drivers are using platform data to provide configurations for coefficient blocks which isn't at all convenient for runtime management or configuration development. Currently only devices using regmap are supported, an error will be generated for any attempt to work with a byte control on a non-regmap device. There's no fundamental block to other devices so support could be added if required. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@ti.com>
Diffstat (limited to 'sound/soc/soc-core.c')
-rw-r--r--sound/soc/soc-core.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 3ca70594e242..a9786ab70504 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -2736,6 +2736,55 @@ int snd_soc_put_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2736} 2736}
2737EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r_sx); 2737EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r_sx);
2738 2738
2739int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
2740 struct snd_ctl_elem_info *uinfo)
2741{
2742 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2743 struct soc_bytes *params = (void *)kcontrol->private_value;
2744
2745 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
2746 uinfo->count = params->num_regs * codec->val_bytes;
2747
2748 return 0;
2749}
2750EXPORT_SYMBOL_GPL(snd_soc_bytes_info);
2751
2752int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
2753 struct snd_ctl_elem_value *ucontrol)
2754{
2755 struct soc_bytes *params = (void *)kcontrol->private_value;
2756 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2757 int ret;
2758
2759 if (codec->using_regmap)
2760 ret = regmap_raw_read(codec->control_data, params->base,
2761 ucontrol->value.bytes.data,
2762 params->num_regs * codec->val_bytes);
2763 else
2764 ret = -EINVAL;
2765
2766 return ret;
2767}
2768EXPORT_SYMBOL_GPL(snd_soc_bytes_get);
2769
2770int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
2771 struct snd_ctl_elem_value *ucontrol)
2772{
2773 struct soc_bytes *params = (void *)kcontrol->private_value;
2774 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2775 int ret;
2776
2777 if (codec->using_regmap)
2778 ret = regmap_raw_write(codec->control_data, params->base,
2779 ucontrol->value.bytes.data,
2780 params->num_regs * codec->val_bytes);
2781 else
2782 ret = -EINVAL;
2783
2784 return ret;
2785}
2786EXPORT_SYMBOL_GPL(snd_soc_bytes_put);
2787
2739/** 2788/**
2740 * snd_soc_dai_set_sysclk - configure DAI system or master clock. 2789 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2741 * @dai: DAI 2790 * @dai: DAI