diff options
Diffstat (limited to 'sound/soc/codecs/cs35l56-shared.c')
| -rw-r--r-- | sound/soc/codecs/cs35l56-shared.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/sound/soc/codecs/cs35l56-shared.c b/sound/soc/codecs/cs35l56-shared.c index 69c951e30584..d3db89c93b33 100644 --- a/sound/soc/codecs/cs35l56-shared.c +++ b/sound/soc/codecs/cs35l56-shared.c @@ -5,6 +5,7 @@ // Copyright (C) 2023 Cirrus Logic, Inc. and // Cirrus Logic International Semiconductor Ltd. +#include <linux/gpio/consumer.h> #include <linux/regmap.h> #include <linux/regulator/consumer.h> #include <linux/types.h> @@ -695,6 +696,41 @@ int cs35l56_hw_init(struct cs35l56_base *cs35l56_base) } EXPORT_SYMBOL_NS_GPL(cs35l56_hw_init, SND_SOC_CS35L56_SHARED); +int cs35l56_get_speaker_id(struct cs35l56_base *cs35l56_base) +{ + struct gpio_descs *descs; + int speaker_id; + int i, ret; + + /* Read the speaker type qualifier from the motherboard GPIOs */ + descs = gpiod_get_array_optional(cs35l56_base->dev, "spk-id", GPIOD_IN); + if (!descs) { + return -ENOENT; + } else if (IS_ERR(descs)) { + ret = PTR_ERR(descs); + return dev_err_probe(cs35l56_base->dev, ret, "Failed to get spk-id-gpios\n"); + } + + speaker_id = 0; + for (i = 0; i < descs->ndescs; i++) { + ret = gpiod_get_value_cansleep(descs->desc[i]); + if (ret < 0) { + dev_err_probe(cs35l56_base->dev, ret, "Failed to read spk-id[%d]\n", i); + goto err; + } + + speaker_id |= (ret << i); + } + + dev_dbg(cs35l56_base->dev, "Speaker ID = %d\n", speaker_id); + ret = speaker_id; +err: + gpiod_put_array(descs); + + return ret; +} +EXPORT_SYMBOL_NS_GPL(cs35l56_get_speaker_id, SND_SOC_CS35L56_SHARED); + static const u32 cs35l56_bclk_valid_for_pll_freq_table[] = { [0x0C] = 128000, [0x0F] = 256000, |