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Sound Control: Sound control for WCD93xx codec
Fully GPL'ed version. Signed-off-by: faux123 <reioux@gmail.com> Conflicts: sound/soc/codecs/Kconfig sound/soc/codecs/Makefile Signed-off-by: flar2 <asegaert@gmail.com>
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faux123
followmsi
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4 changed files with 281 additions and 0 deletions
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@ -454,3 +454,9 @@ config SND_SOC_TPA2028D
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default n
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help
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Texas Instruments 3W Mono Class-D Audio Amplifier
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config SOUND_CONTROL_HAX_GPL
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tristate "wcd93xx sound control hax"
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default y
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help
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FauxSound WCD93xx chipset sound control hacks
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@ -213,3 +213,6 @@ obj-$(CONFIG_SND_SOC_MSM_STUB) += snd-soc-msm-stub.o
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obj-$(CONFIG_SND_SOC_MAX9877) += snd-soc-max9877.o
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obj-$(CONFIG_SND_SOC_TPA6130A2) += snd-soc-tpa6130a2.o
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obj-$(CONFIG_SND_SOC_TPA2028D) += tpa2028d.o
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# Hack
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obj-$(CONFIG_SOUND_CONTROL_HAX_GPL) += sound_control_gpl.o
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267
sound/soc/codecs/sound_control_gpl.c
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267
sound/soc/codecs/sound_control_gpl.c
Normal file
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@ -0,0 +1,267 @@
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/*
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* Author: Paul Reioux aka Faux123 <reioux@gmail.com>
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*
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* WCD93xx sound control module
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* Copyright 2013 Paul Reioux
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/module.h>
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#include <linux/kobject.h>
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#include <linux/sysfs.h>
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#include <linux/kallsyms.h>
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#include <sound/control.h>
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#include <sound/soc.h>
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extern struct snd_kcontrol_new *gpl_faux_snd_controls_ptr;
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#define SOUND_CONTROL_MAJOR_VERSION 2
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#define SOUND_CONTROL_MINOR_VERSION 0
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#define CAMCORDER_MIC_OFFSET 20
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#define HANDSET_MIC_OFFSET 21
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#define SPEAKER_OFFSET 10
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#define HEADPHONE_L_OFFSET 8
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#define HEADPHONE_R_OFFSET 9
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static ssize_t cam_mic_gain_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf)
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{
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struct soc_mixer_control *l_mixer_ptr;
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l_mixer_ptr =
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(struct soc_mixer_control *)gpl_faux_snd_controls_ptr[CAMCORDER_MIC_OFFSET].
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private_value;
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return sprintf(buf, "%d", l_mixer_ptr->max);
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}
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static ssize_t cam_mic_gain_store(struct kobject *kobj, struct kobj_attribute *attr, const char *buf, size_t count)
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{
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int l_max;
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int l_delta;
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struct soc_mixer_control *l_mixer_ptr;
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l_mixer_ptr =
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(struct soc_mixer_control *)gpl_faux_snd_controls_ptr[CAMCORDER_MIC_OFFSET].
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private_value;
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sscanf(buf, "%d", &l_max);
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// limit the max gain
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l_delta = l_max - l_mixer_ptr->platform_max;
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l_mixer_ptr->platform_max = l_max;
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l_mixer_ptr->max = l_max;
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l_mixer_ptr->min += l_delta;
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return (count);
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}
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static ssize_t mic_gain_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf)
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{
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struct soc_mixer_control *l_mixer_ptr;
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l_mixer_ptr =
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(struct soc_mixer_control *)gpl_faux_snd_controls_ptr[HANDSET_MIC_OFFSET].
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private_value;
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return sprintf(buf, "%d", l_mixer_ptr->max);
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}
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static ssize_t mic_gain_store(struct kobject *kobj, struct kobj_attribute *attr, const char *buf, size_t count)
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{
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int l_max;
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int l_delta;
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struct soc_mixer_control *l_mixer_ptr;
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l_mixer_ptr =
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(struct soc_mixer_control *)gpl_faux_snd_controls_ptr[HANDSET_MIC_OFFSET].
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private_value;
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sscanf(buf, "%d", &l_max);
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l_delta = l_max - l_mixer_ptr->platform_max;
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l_mixer_ptr->platform_max = l_max;
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l_mixer_ptr->max = l_max;
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l_mixer_ptr->min += l_delta;
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return (count);
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}
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static ssize_t speaker_gain_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf)
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{
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struct soc_mixer_control *l_mixer_ptr;
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l_mixer_ptr =
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(struct soc_mixer_control *)gpl_faux_snd_controls_ptr[SPEAKER_OFFSET].
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private_value;
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return sprintf(buf, "%d", l_mixer_ptr->max);
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}
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static ssize_t speaker_gain_store(struct kobject *kobj, struct kobj_attribute *attr, const char *buf, size_t count)
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{
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int l_max;
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int l_delta;
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struct soc_mixer_control *l_mixer_ptr;
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l_mixer_ptr =
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(struct soc_mixer_control *)gpl_faux_snd_controls_ptr[SPEAKER_OFFSET].
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private_value;
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sscanf(buf, "%d", &l_max);
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l_delta = l_max - l_mixer_ptr->platform_max;
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l_mixer_ptr->platform_max = l_max;
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l_mixer_ptr->max = l_max;
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l_mixer_ptr->min += l_delta;
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return (count);
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}
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static ssize_t headphone_gain_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf)
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{
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struct soc_mixer_control *l_mixer_ptr, *r_mixer_ptr;
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l_mixer_ptr =
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(struct soc_mixer_control *)gpl_faux_snd_controls_ptr[HEADPHONE_L_OFFSET].
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private_value;
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r_mixer_ptr =
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(struct soc_mixer_control *)gpl_faux_snd_controls_ptr[HEADPHONE_R_OFFSET].
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private_value;
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return sprintf(buf, "%d %d",
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l_mixer_ptr->max,
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r_mixer_ptr->max);
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}
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static ssize_t headphone_gain_store(struct kobject *kobj, struct kobj_attribute *attr, const char *buf, size_t count)
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{
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int l_max, r_max;
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int l_delta, r_delta;
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struct soc_mixer_control *l_mixer_ptr, *r_mixer_ptr;
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l_mixer_ptr =
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(struct soc_mixer_control *)gpl_faux_snd_controls_ptr[HEADPHONE_L_OFFSET].
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private_value;
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r_mixer_ptr =
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(struct soc_mixer_control *)gpl_faux_snd_controls_ptr[HEADPHONE_R_OFFSET].
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private_value;
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sscanf(buf, "%d %d", &l_max, &r_max);
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l_delta = l_max - l_mixer_ptr->platform_max;
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l_mixer_ptr->platform_max = l_max;
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l_mixer_ptr->max = l_max;
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l_mixer_ptr->min += l_delta;
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r_delta = r_max - r_mixer_ptr->platform_max;
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r_mixer_ptr->platform_max = r_max;
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r_mixer_ptr->max = r_max;
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r_mixer_ptr->min += r_delta;
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return count;
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}
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static ssize_t sound_control_version_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf)
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{
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return sprintf(buf, "version: %u.%u\n",
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SOUND_CONTROL_MAJOR_VERSION,
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SOUND_CONTROL_MINOR_VERSION);
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}
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static struct kobj_attribute cam_mic_gain_attribute =
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__ATTR(gpl_cam_mic_gain,
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0666,
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cam_mic_gain_show,
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cam_mic_gain_store);
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static struct kobj_attribute mic_gain_attribute =
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__ATTR(gpl_mic_gain,
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0666,
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mic_gain_show,
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mic_gain_store);
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static struct kobj_attribute speaker_gain_attribute =
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__ATTR(gpl_speaker_gain,
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0666,
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speaker_gain_show,
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speaker_gain_store);
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static struct kobj_attribute headphone_gain_attribute =
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__ATTR(gpl_headphone_gain,
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0666,
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headphone_gain_show,
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headphone_gain_store);
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static struct kobj_attribute sound_control_version_attribute =
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__ATTR(gpl_sound_control_version,
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0444,
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sound_control_version_show, NULL);
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static struct attribute *sound_control_attrs[] =
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{
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&cam_mic_gain_attribute.attr,
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&mic_gain_attribute.attr,
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&speaker_gain_attribute.attr,
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&headphone_gain_attribute.attr,
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&sound_control_version_attribute.attr,
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NULL,
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};
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static struct attribute_group sound_control_attr_group =
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{
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.attrs = sound_control_attrs,
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};
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static struct kobject *sound_control_kobj;
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static int sound_control_init(void)
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{
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int sysfs_result;
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if (gpl_faux_snd_controls_ptr == NULL) {
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pr_err("%s sound_controls_ptr is NULL!\n", __FUNCTION__);
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return -1;
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}
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sound_control_kobj =
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kobject_create_and_add("sound_control", kernel_kobj);
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if (!sound_control_kobj) {
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pr_err("%s sound_control_kobj create failed!\n",
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__FUNCTION__);
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return -ENOMEM;
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}
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sysfs_result = sysfs_create_group(sound_control_kobj,
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&sound_control_attr_group);
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if (sysfs_result) {
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pr_info("%s sysfs create failed!\n", __FUNCTION__);
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kobject_put(sound_control_kobj);
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}
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return sysfs_result;
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}
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static void sound_control_exit(void)
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{
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if (sound_control_kobj != NULL)
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kobject_put(sound_control_kobj);
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}
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module_init(sound_control_init);
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module_exit(sound_control_exit);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Paul Reioux <reioux@gmail.com>");
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MODULE_DESCRIPTION("Sound Control Module GPL Edition");
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@ -8408,6 +8408,11 @@ static const struct file_operations codec_mbhc_debug_ops = {
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};
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#endif
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#ifdef CONFIG_SOUND_CONTROL_HAX_GPL
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struct snd_kcontrol_new *gpl_faux_snd_controls_ptr =
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(struct snd_kcontrol_new *)tabla_snd_controls;
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#endif
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static int tabla_codec_probe(struct snd_soc_codec *codec)
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{
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struct wcd9xxx *control;
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