This patch adds snd_soc_of_parse_audio_simple_widgets() and supports below style of widgets name on DT.

"wname-prefix[ individual name]" "wname-prefix" includes: "Mic", "Line", "Hp", "Spk"...

For instance: simple-audio-widgets = "Mic Jack", "Line In Jack", "Hp Jack", "Spk Ext", "Line Out Jack";

Signed-off-by: Xiubo Li Li.Xiubo@freescale.com --- include/sound/soc.h | 2 ++ sound/soc/soc-core.c | 62 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 64 insertions(+)

diff --git a/include/sound/soc.h b/include/sound/soc.h index 03ce45b..b2b5900 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -1172,6 +1172,8 @@ void snd_soc_util_exit(void);

int snd_soc_of_parse_card_name(struct snd_soc_card *card, const char *propname); +int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card *card, + const char *propname); int snd_soc_of_parse_audio_routing(struct snd_soc_card *card, const char *propname); unsigned int snd_soc_of_parse_daifmt(struct device_node *np, diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 3a128f0..36cadd3 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -4417,6 +4417,68 @@ int snd_soc_of_parse_card_name(struct snd_soc_card *card, } EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);

+static struct snd_soc_dapm_widget simple_widgets[] = { + SND_SOC_DAPM_MIC("Mic", NULL), + SND_SOC_DAPM_LINE("Line", NULL), + SND_SOC_DAPM_HP("Hp", NULL), + SND_SOC_DAPM_SPK("Spk", NULL), +}; + +int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card *card, + const char *propname) +{ + struct device_node *np = card->dev->of_node; + struct snd_soc_dapm_widget *widgets; + const char *wname; + int i, j, cnt, ret; + + cnt = of_property_count_strings(np, propname); + if (cnt <= 0) { + dev_err(card->dev, + "ASoC: Property '%s' does not exist or " + "length is zero\n", propname); + return -EINVAL; + } + + widgets = devm_kcalloc(card->dev, cnt, sizeof(*widgets), GFP_KERNEL); + if (!widgets) { + dev_err(card->dev, + "ASoC: Could not allocate DAPM widgets table\n"); + return -ENOMEM; + } + + for (i = 0; i < cnt; i++) { + ret = of_property_read_string_index(np, propname, i, &wname); + if (ret) { + dev_err(card->dev, + "ASoC: Property '%s' index %d could not be read: %d\n", + propname, i, ret); + return -EINVAL; + } + + for (j = 0; j < ARRAY_SIZE(simple_widgets); j++) { + if (!strncmp(wname, simple_widgets[j].name, + strlen(simple_widgets[j].name))) { + widgets[i] = simple_widgets[j]; + break; + } + } + + if (j >= ARRAY_SIZE(simple_widgets)) { + dev_err(card->dev, + "ASoC: DAPM widget : '%s' is not supported\n", + wname); + return -EINVAL; + } + } + + card->dapm_widgets = widgets; + card->num_dapm_widgets = cnt; + + return 0; +} +EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets); + int snd_soc_of_parse_audio_routing(struct snd_soc_card *card, const char *propname) {