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Commit 2c28ca7a authored by Aravind Kumar's avatar Aravind Kumar
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ASoC: support external codec for 8916 



8916 supports external audio codec (tapan) over I2C\I2S.
Add suport for tapan audio codec and also add pinctrl support
for codec reset GPIO.

Change-Id: I3f2820139c644bd993c17e12e27f7a54f58f692e
Signed-off-by: default avatarAravind Kumar <akumark@codeaurora.org>
parent 6212b769

Documentation/devicetree/bindings/sound/qcom-audio-dev.txt

+16 −0
Original line number Diff line number Diff line
@@ -524,6 +524,7 @@ normally open. 
switch type on target typically the switch type will be normally open or

normally close, value for this property 0 for normally close and 1 for

normally open.

- qcom,audio-routing : A list of the connections between audio components.

- pinctrl-names : Pincntrl entries to configure the PDM gpio lines and

		  cross connection switch gpio accordingly

- pinctrl-0 : This explains the active state of the PDM gpio lines
@@ -532,6 +533,14 @@ normally open. 
	      gpio lines

- pinctrl-3 : This explains the suspend state of the cross connection

              gpio lines

- qcom,tapan-mclk-clk-freq : Tapan mclk Freq in Hz.

- qcom,prim-auxpcm-gpio-clk  : GPIO on which Primary AUXPCM clk signal is coming.

- qcom,prim-auxpcm-gpio-sync : GPIO on which Primary AUXPCM SYNC signal is coming.

- qcom,prim-auxpcm-gpio-din  : GPIO on which Primary AUXPCM DIN signal is coming.

- qcom,prim-auxpcm-gpio-dout : GPIO on which Primary AUXPCM DOUT signal is coming.

- qcom,prim-auxpcm-gpio-set : set of GPIO lines used for Primary AUXPCM port

- qcom,tapan-codec-9302: Indicates that this device node is for WCD9302 audio

			    codec.



Optional Properties:

- qcom,us-euro-gpios : GPIO on which gnd/mic swap signal is coming.
@@ -564,6 +573,13 @@ Example: 
		pinctrl-1 = <&cdc_pdm_lines_sus>;

		pinctrl-2 = <&cross_conn_det_act>;

		pinctrl-3 = <&cross_conn_det_sus>;

		qcom,tapan-mclk-clk-freq = <9600000>;

		qcom,prim-auxpcm-gpio-clk  = <&msm_gpio 63 0>;

		qcom,prim-auxpcm-gpio-sync = <&msm_gpio 64 0>;

		qcom,prim-auxpcm-gpio-din  = <&msm_gpio 65 0>;

		qcom,prim-auxpcm-gpio-dout = <&msm_gpio 66 0>;

		qcom,prim-auxpcm-gpio-set = "prim-gpio-prim";

		qcom,tapan-codec-9302;

	};



* MSM8974 ASoC Machine driver

drivers/mfd/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -99,6 +99,8 @@ obj-$(CONFIG_WCD9306_CODEC) += wcd9xxx-core.o wcd9xxx-irq.o\ 
						wcd9xxx-slimslave.o wcd9xxx-core-resource.o

obj-$(CONFIG_WCD9330_CODEC)	+= wcd9xxx-core.o wcd9xxx-irq.o wcd9xxx-slimslave.o\

						wcd9xxx-core-resource.o

obj-$(CONFIG_SND_SOC_MSM8X16_WCD)	+= wcd9xxx-core.o wcd9xxx-irq.o\

						wcd9xxx-slimslave.o wcd9xxx-core-resource.o



ifeq ($(CONFIG_SA1100_ASSABET),y)

obj-$(CONFIG_MCP_UCB1200)	+= ucb1x00-assabet.o

drivers/mfd/wcd9xxx-core.c

+73 −7
Original line number Diff line number Diff line
@@ -64,6 +64,40 @@ struct wcd9xxx_i2c { 
	int mod_id;

};



struct pinctrl_info {

	struct pinctrl *pinctrl;

	struct pinctrl_state *extncodec_sus;

	struct pinctrl_state *extncodec_act;

};



static struct pinctrl_info pinctrl_info;



static int extcodec_get_pinctrl(struct device *dev)

{

	struct pinctrl *pinctrl;



	pinctrl = pinctrl_get(dev);

	if (IS_ERR(pinctrl)) {

		pr_err("%s: Unable to get pinctrl handle\n", __func__);

		return -EINVAL;

	}

	pinctrl_info.pinctrl = pinctrl;

	/* get all the states handles from Device Tree */

	pinctrl_info.extncodec_sus = pinctrl_lookup_state(pinctrl, "suspend");

	if (IS_ERR(pinctrl_info.extncodec_sus)) {

		pr_err("%s: Unable to get pinctrl disable state handle, err: %ld\n",

				__func__, PTR_ERR(pinctrl_info.extncodec_sus));

		return -EINVAL;

	}

	pinctrl_info.extncodec_act = pinctrl_lookup_state(pinctrl, "active");

	if (IS_ERR(pinctrl_info.extncodec_act)) {

		pr_err("%s: Unable to get pinctrl disable state handle, err: %ld\n",

				__func__, PTR_ERR(pinctrl_info.extncodec_act));

		return -EINVAL;

	}

	return 0;

}



static int wcd9xxx_dt_parse_vreg_info(struct device *dev,

				      struct wcd9xxx_regulator *vreg,

				      const char *vreg_name, bool ondemand);
@@ -512,7 +546,8 @@ static int wcd9xxx_reset(struct wcd9xxx *wcd9xxx) 
{

	int ret;



	if (wcd9xxx->reset_gpio && wcd9xxx->slim_device_bootup) {

	if (wcd9xxx->reset_gpio && wcd9xxx->slim_device_bootup

			&& !wcd9xxx->use_pinctrl) {

		ret = gpio_request(wcd9xxx->reset_gpio, "CDC_RESET");

		if (ret) {

			pr_err("%s: Failed to request gpio %d\n", __func__,
@@ -522,19 +557,44 @@ static int wcd9xxx_reset(struct wcd9xxx *wcd9xxx) 
		}

	}

	if (wcd9xxx->reset_gpio) {

		if (wcd9xxx->use_pinctrl) {

			/* Reset the CDC PDM TLMM pins to a default state */

			ret = pinctrl_select_state(pinctrl_info.pinctrl,

				pinctrl_info.extncodec_act);

			if (ret != 0) {

				pr_err("%s: Failed to enable gpio pins; ret=%d\n",

						__func__, ret);

				return ret;

			}

			gpio_set_value_cansleep(wcd9xxx->reset_gpio, 0);

			msleep(20);

			gpio_set_value_cansleep(wcd9xxx->reset_gpio, 1);

			msleep(20);

			ret = pinctrl_select_state(pinctrl_info.pinctrl,

					pinctrl_info.extncodec_sus);

			if (ret != 0) {

				pr_err("%s: Failed to suspend reset pins, ret: %d\n",

						__func__, ret);

				return ret;

			}

		} else {

			gpio_direction_output(wcd9xxx->reset_gpio, 0);

			msleep(20);

			gpio_direction_output(wcd9xxx->reset_gpio, 1);

			msleep(20);

		}

	}

	return 0;

}



static void wcd9xxx_free_reset(struct wcd9xxx *wcd9xxx)

{

	if (wcd9xxx->reset_gpio) {

		if (!wcd9xxx->use_pinctrl) {

			gpio_free(wcd9xxx->reset_gpio);

			wcd9xxx->reset_gpio = 0;

		} else

			pinctrl_put(pinctrl_info.pinctrl);

	}

}
@@ -1235,6 +1295,12 @@ static int wcd9xxx_i2c_probe(struct i2c_client *client, 
			ret = -EINVAL;

			goto fail;

		}

		ret = extcodec_get_pinctrl(&client->dev);

		if (ret < 0)

			wcd9xxx->use_pinctrl = false;

		else

			wcd9xxx->use_pinctrl = true;



		if (i2c_check_functionality(client->adapter,

					    I2C_FUNC_I2C) == 0) {

			dev_dbg(&client->dev, "can't talk I2C?\n");

include/linux/mfd/wcd9xxx/core.h

+1 −0
Original line number Diff line number Diff line
@@ -209,6 +209,7 @@ struct wcd9xxx { 
	struct wcd9xxx_ch *rx_chs;

	struct wcd9xxx_ch *tx_chs;

	u32 mclk_rate;

	u16 use_pinctrl;



	const struct wcd9xxx_codec_type *codec_type;

};

sound/soc/codecs/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -73,6 +73,8 @@ snd-soc-wcd9330-objs := wcd9330.o wcd9330-tables.o 
snd-soc-wcd9xxx-objs := wcd9xxx-resmgr.o wcd9xxx-mbhc.o wcd9xxx-common.o

snd-soc-msm8x10-wcd-objs := msm8x10-wcd.o msm8x10-wcd-tables.o wcd9xxx-common.o

snd-soc-msm8x16-wcd-objs := msm8x16-wcd.o msm8x16-wcd-tables.o wcd-mbhc-v2.o

snd-soc-msm8x16-wcd-objs += wcd9xxx-common.o wcd9xxx-resmgr.o wcd9xxx-mbhc.o

snd-soc-msm8x16-wcd-objs += wcd9xxx-common.o wcd9306.o wcd9306-tables.o

snd-soc-wcd-cpe-objs := wcd_cpe_services.o wcd_cpe_core.o

snd-soc-wl1273-objs := wl1273.o

snd-soc-wm-adsp-objs := wm_adsp.o