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 --- * Change of_property_ APIs to device_property_ APIs --- Documentation/devicetree/bindings/sound/rt5645.txt | 68 ++++++++++++++++++++++ sound/soc/codecs/rt5645.c | 16 +++++ 2 files changed, 84 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..f21e9af --- /dev/null +++ b/Documentation/devicetree/bindings/sound/rt5645.txt @@ -0,0 +1,68 @@ +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,dmic1-data-pin + 0: dmic1 is not used + 1: using IN2P pin as dmic1 data pin + 2: using GPIO6 pin as dmic1 data pin + 3: using GPIO10 pin as dmic1 data pin + 4: using GPIO12 pin as dmic1 data pin + +- realtek,dmic2-data-pin + 0: dmic2 is not used + 1: using IN2N pin as dmic2 data pin + 2: using GPIO5 pin as dmic2 data pin + 3: using GPIO11 pin as dmic2 data pin + +-- 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>; + rt5645-gpios = <&gpio 19 0>; + interrupt-parent = <&gpio>; + interrupts = <7 IRQ_TYPE_EDGE_FALLING>; + realtek,dmic-en = "true"; + realtek,en-jd-func = "true"; + realtek,jd-mode = <3>; +}; \ No newline at end of file diff --git a/sound/soc/codecs/rt5645.c b/sound/soc/codecs/rt5645.c index 0cb4942..76b1efd 100644 --- a/sound/soc/codecs/rt5645.c +++ b/sound/soc/codecs/rt5645.c @@ -3225,6 +3225,20 @@ static struct dmi_system_id dmi_platform_intel_braswell[] = { { } };
+static int rt5645_parse_dt(struct rt5645_priv *rt5645, struct device_node *np) +{ + rt5645->pdata.in2_diff = device_property_read_bool(np, + "realtek,in2-differential"); + device_property_read_u32(np, + "realtek,dmic1-data-pin", &rt5645->pdata.dmic1_data_pin); + device_property_read_u32(np, + "realtek,dmic2-data-pin", &rt5645->pdata.dmic2_data_pin); + device_property_read_u32(np, + "realtek,jd-mode", &rt5645->pdata.jd_mode); + + return 0; +} + static int rt5645_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { @@ -3244,6 +3258,8 @@ static int rt5645_i2c_probe(struct i2c_client *i2c,
if (pdata) { rt5645->pdata = *pdata; + } else if (i2c->dev.of_node) { + rt5645_parse_dt(rt5645, i2c->dev.of_node); } else { if (dmi_check_system(dmi_platform_intel_braswell)) { rt5645->pdata = *rt5645_pdata;