diff options
Diffstat (limited to 'sound/soc')
| -rw-r--r-- | sound/soc/codecs/wm8903.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/sound/soc/codecs/wm8903.c b/sound/soc/codecs/wm8903.c index b4f2c906b2f3..adfbefaaab21 100644 --- a/sound/soc/codecs/wm8903.c +++ b/sound/soc/codecs/wm8903.c @@ -2070,6 +2070,49 @@ static int wm8903_set_pdata_irq_trigger(struct i2c_client *i2c, return 0; } +static int wm8903_set_pdata_from_of(struct i2c_client *i2c, + struct wm8903_platform_data *pdata) +{ + const struct device_node *np = i2c->dev.of_node; + u32 val32; + int i; + + if (of_property_read_u32(np, "micdet-cfg", &val32) >= 0) + pdata->micdet_cfg = val32; + + if (of_property_read_u32(np, "micdet-delay", &val32) >= 0) + pdata->micdet_delay = val32; + + if (of_property_read_u32_array(np, "gpio-cfg", pdata->gpio_cfg, + ARRAY_SIZE(pdata->gpio_cfg)) >= 0) { + /* + * In device tree: 0 means "write 0", + * 0xffffffff means "don't touch". + * + * In platform data: 0 means "don't touch", + * 0x8000 means "write 0". + * + * Note: WM8903_GPIO_CONFIG_ZERO == 0x8000. + * + * Convert from DT to pdata representation here, + * so no other code needs to change. + */ + for (i = 0; i < ARRAY_SIZE(pdata->gpio_cfg); i++) { + if (pdata->gpio_cfg[i] == 0) { + pdata->gpio_cfg[i] = WM8903_GPIO_CONFIG_ZERO; + } else if (pdata->gpio_cfg[i] == 0xffffffff) { + pdata->gpio_cfg[i] = 0; + } else if (pdata->gpio_cfg[i] > 0x7fff) { + dev_err(&i2c->dev, "Invalid gpio-cfg[%d] %x\n", + i, pdata->gpio_cfg[i]); + return -EINVAL; + } + } + } + + return 0; +} + static __devinit int wm8903_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { @@ -2111,6 +2154,12 @@ static __devinit int wm8903_i2c_probe(struct i2c_client *i2c, if (ret != 0) return ret; } + + if (i2c->dev.of_node) { + ret = wm8903_set_pdata_from_of(i2c, wm8903->pdata); + if (ret != 0) + return ret; + } } ret = regmap_read(wm8903->regmap, WM8903_SW_RESET_AND_ID, &val); |