Merge "asoc: swr-haptics: add control to set VMAX" (fc2cd3b0) · Commits · e / devices / android_kernel_fairphone_FP5

asoc/codecs/swr-haptics.c

+48 −1

Original line number	Diff line number	Diff line
		// SPDX-License-Identifier: GPL-2.0-only
		/*
		* Copyright (c) 2020, The Linux Foundation. All rights reserved.
		* Copyright (c) 2020-2021, The Linux Foundation. All rights reserved.
		*/

		#include <linux/device.h>
		@@ -81,6 +81,7 @@ struct swr_haptics_dev {
		struct regulator *hpwr_vreg;
		u32 hpwr_voltage_mv;
		bool hpwr_vreg_enabled;
		u8 vmax;
		};

		static bool swr_hap_volatile_register(struct device *dev, unsigned int reg)
		@@ -218,6 +219,15 @@ static int hap_enable_swr_dac_port(struct snd_soc_dapm_widget *w,

		switch (event) {
		case SND_SOC_DAPM_PRE_PMU:
		rc = regmap_write(swr_hap->regmap, SWR_VMAX_REG, swr_hap->vmax);
		if (rc) {
		dev_err(swr_hap->dev, "%s: SWR_VMAX update failed, rc=%d\n",
		__func__, rc);
		return rc;
		}
		regmap_read(swr_hap->regmap, SWR_VMAX_REG, &val);
		regmap_read(swr_hap->regmap, SWR_READ_DATA_REG, &val);
		dev_dbg(swr_hap->dev, "%s: swr_vmax is set to 0x%x\n", __func__, val);
		swr_device_wakeup_vote(swr_hap->swr_slave);
		swr_connect_port(swr_hap->swr_slave, &port_id, num_port,
		&ch_mask, &ch_rate, &num_ch, &port_type);
		@@ -275,6 +285,39 @@ static int hap_enable_swr_dac_port(struct snd_soc_dapm_widget *w,
		return 0;
		}

		static int haptics_vmax_get(struct snd_kcontrol *kcontrol,
		struct snd_ctl_elem_value *ucontrol)
		{
		struct snd_soc_component *component =
		snd_soc_kcontrol_component(kcontrol);
		struct swr_haptics_dev *swr_hap =
		snd_soc_component_get_drvdata(component);

		pr_debug("%s: vmax %u\n", __func__, swr_hap->vmax);
		ucontrol->value.integer.value[0] = swr_hap->vmax;

		return 0;
		}

		static int haptics_vmax_put(struct snd_kcontrol *kcontrol,
		struct snd_ctl_elem_value *ucontrol)
		{
		struct snd_soc_component *component =
		snd_soc_kcontrol_component(kcontrol);
		struct swr_haptics_dev *swr_hap =
		snd_soc_component_get_drvdata(component);

		swr_hap->vmax = ucontrol->value.integer.value[0];
		pr_debug("%s: vmax %u\n", __func__, swr_hap->vmax);

		return 0;
		}

		static const struct snd_kcontrol_new haptics_snd_controls[] = {
		SOC_SINGLE_EXT("Haptics Amplitude Step", SND_SOC_NOPM, 0, 100, 0,
		haptics_vmax_get, haptics_vmax_put),
		};

		static const struct snd_soc_dapm_widget haptics_comp_dapm_widgets[] = {
		SND_SOC_DAPM_INPUT("HAP_IN"),
		SND_SOC_DAPM_MIXER_E("SWR DAC_Port", SND_SOC_NOPM, 0, 0,
		@@ -321,6 +364,8 @@ static const struct snd_soc_component_driver swr_haptics_component = {
		.name = "swr-haptics",
		.probe = haptics_comp_probe,
		.remove = haptics_comp_remove,
		.controls = haptics_snd_controls,
		.num_controls = ARRAY_SIZE(haptics_snd_controls),
		.dapm_widgets = haptics_comp_dapm_widgets,
		.num_dapm_widgets = ARRAY_SIZE(haptics_comp_dapm_widgets),
		.dapm_routes = haptics_comp_dapm_route,
		@@ -388,6 +433,8 @@ static int swr_haptics_probe(struct swr_device *sdev)
		if (!swr_hap)
		return -ENOMEM;

		/* VMAX default to 5V */
		swr_hap->vmax = 100;
		swr_hap->swr_slave = sdev;
		swr_hap->dev = &sdev->dev;
		swr_set_dev_data(sdev, swr_hap);