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asoc: swr-haptics: add control to set VMAX

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Add control to set VMAX to adjust different vibrator
setting from userspace.

Change-Id: I7300e4f0ae57e403c8fc79db38598946289effb6
Signed-off-by: Meng Wang <mengw@codeaurora.org>
This commit is contained in:
Meng Wang 2020-10-15 15:14:40 +08:00
commit f0304a3ebe
1 changed files with 48 additions and 1 deletions
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49
asoc/codecs/swr-haptics.c
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@ -1,6 +1,6 @@
// 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);