Modify the RT5645 driver to parse platform data from device tree. Write a DT binding document to describe those properties.
Signed-off-by: Bard Liao bardliao@realtek.com --- Documentation/devicetree/bindings/sound/rt5645.txt | 69 ++++++++++++++++++++++ sound/soc/codecs/rt5645.c | 39 ++++++++++++ 2 files changed, 108 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/rt5645.txt
diff --git a/Documentation/devicetree/bindings/sound/rt5645.txt b/Documentation/devicetree/bindings/sound/rt5645.txt new file mode 100644 index 0000000..47ce7ca --- /dev/null +++ b/Documentation/devicetree/bindings/sound/rt5645.txt @@ -0,0 +1,69 @@ +RT5650/RT5645 audio CODEC + +This device supports I2C only. + +Required properties: + +- compatible : One of "realtek,rt5645" or "realtek,rt5650". + +- reg : The I2C address of the device. + +- interrupts : The CODEC's interrupt output. + +Optional properties: + +- realtek,in2-differential + Boolean. Indicate MIC2 input are differential, rather than single-ended. + +- realtek,dmic-en : Boolean. Indicate DMIC is used. + +- realtek,dmic1-data-pin +- realtek,dmic2-data-pin + Indicate which pin is used for each DMIC. + +- realtek,hp-det-gpio : The GPIO that indicate a JD event is triggered. + +- realtek,gpio-hp_det-active_high + Boolean. Indicate if hp-det-gpio is active high or not. + +- realtek,en-jd-func + Boolean. Indicate if codec IRQ is used or not. It is usually used for JD + and/or headset button detection. + +-- realtek,jd-mode : The JD mode of rt5645/rt5650 + 0 : rt5645/rt5650 JD function is not used + 1 : Mode-0 (VDD=3.3V), two port jack detection + 2 : Mode-1 (VDD=3.3V), one port jack detection + 3 : Mode-2 (VDD=1.8V), one port jack detection + +Pins on the device (for linking into audio routes) for RT5645/RT5650: + + * DMIC L1 + * DMIC R1 + * DMIC L2 + * DMIC R2 + * IN1P + * IN1N + * IN2P + * IN2N + * Haptic Generator + * HPOL + * HPOR + * LOUTL + * LOUTR + * PDM1L + * PDM1R + * SPOL + * SPOR + +Example: + +codec: rt5650@1a { + compatible = "realtek,rt5650"; + reg = <0x1a>; + interrupt-parent = <&gpio>; + interrupts = <7 IRQ_TYPE_EDGE_FALLING>; + realtek,dmic-en = "true"; + realtek,en-jd-func = "true"; + realtek,jd-mode = <3>; +}; diff --git a/sound/soc/codecs/rt5645.c b/sound/soc/codecs/rt5645.c index 2ba761b..fa19ad4 100644 --- a/sound/soc/codecs/rt5645.c +++ b/sound/soc/codecs/rt5645.c @@ -3133,6 +3133,41 @@ static struct dmi_system_id dmi_platform_intel_braswell[] __initdata = { { } };
+static int rt5645_parse_dt(struct rt5645_priv *rt5645, struct device_node *np) +{ + rt5645->pdata.in2_diff = of_property_read_bool(np, + "realtek,in2-differential"); + rt5645->pdata.dmic_en = of_property_read_bool(np, + "realtek,dmic-en"); + of_property_read_u32(np, + "realtek,dmic1-data-pin", &rt5645->pdata.dmic1_data_pin); + of_property_read_u32(np, + "realtek,dmic2-data-pin", &rt5645->pdata.dmic2_data_pin); + rt5645->pdata.hp_det_gpio = of_get_named_gpio(np, + "realtek,hp-det-gpio", 0); + rt5645->pdata.gpio_hp_det_active_high = of_property_read_bool(np, + "realtek,gpio-hp_det-active_high"); + rt5645->pdata.en_jd_func = of_property_read_bool(np, + "realtek,en-jd-func"); + of_property_read_u32(np, + "realtek,jd-mode", &rt5645->pdata.jd_mode); + /* + * HP_DET_GPIO is optional (it may be statically tied on the board). + * -ENOENT means that the property doesn't exist, i.e. there is no + * GPIO, so is not an error. Any other error code means the property + * exists, but could not be parsed. + */ + + if (!rt5645->pdata.hp_det_gpio) + rt5645->pdata.hp_det_gpio = -EINVAL; + + if (!gpio_is_valid(rt5645->pdata.hp_det_gpio) && + (rt5645->pdata.hp_det_gpio != -ENOENT)) + return rt5645->pdata.hp_det_gpio; + + return 0; +} + static int rt5645_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { @@ -3152,6 +3187,10 @@ static int rt5645_i2c_probe(struct i2c_client *i2c,
if (pdata) { rt5645->pdata = *pdata; + } else if (i2c->dev.of_node) { + ret = rt5645_parse_dt(rt5645, i2c->dev.of_node); + if (ret) + return ret; } else { if (dmi_check_system(dmi_platform_intel_braswell)) { rt5645->pdata = *rt5645_pdata;