1269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls/* 2269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * ALSA mixer controls for the 3269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * ALSA interface to ivtv PCM capture streams 4269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * 5269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * Copyright (C) 2009,2012 Andy Walls <awalls@md.metrocast.net> 6269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * 7269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * This program is free software; you can redistribute it and/or modify 8269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * it under the terms of the GNU General Public License as published by 9269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * the Free Software Foundation; either version 2 of the License, or 10269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * (at your option) any later version. 11269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * 12269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * This program is distributed in the hope that it will be useful, 13269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * but WITHOUT ANY WARRANTY; without even the implied warranty of 14269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * GNU General Public License for more details. 16269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * 17269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * You should have received a copy of the GNU General Public License 18269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * along with this program; if not, write to the Free Software 19269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 20269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * 02111-1307 USA 21269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls */ 22269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls 23269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls#include <linux/init.h> 24269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls#include <linux/kernel.h> 25269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls#include <linux/device.h> 26269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls#include <linux/spinlock.h> 27269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls#include <linux/videodev2.h> 28269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls 29269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls#include <media/v4l2-device.h> 30269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls 31269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls#include <sound/core.h> 32269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls#include <sound/control.h> 33269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls#include <sound/tlv.h> 34269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls 35269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls#include "ivtv-alsa.h" 36269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls#include "ivtv-driver.h" 37269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls 38269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls/* 39269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * Note the cx25840-core volume scale is funny, due to the alignment of the 40269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * scale with another chip's range: 41269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * 42269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * v4l2_control value /512 indicated dB actual dB reg 0x8d4 43269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * 0x0000 - 0x01ff 0 -119 -96 228 44269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * 0x0200 - 0x02ff 1 -118 -96 228 45269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * ... 46269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * 0x2c00 - 0x2dff 22 -97 -96 228 47269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * 0x2e00 - 0x2fff 23 -96 -96 228 48269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * 0x3000 - 0x31ff 24 -95 -95 226 49269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * ... 50269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * 0xee00 - 0xefff 119 0 0 36 51269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * ... 52269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls * 0xfe00 - 0xffff 127 +8 +8 20 53269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls */ 54269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Wallsstatic inline int dB_to_cx25840_vol(int dB) 55269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls{ 56269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls if (dB < -96) 57269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls dB = -96; 58269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls else if (dB > 8) 59269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls dB = 8; 60269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls return (dB + 119) << 9; 61269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls} 62269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls 63269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Wallsstatic inline int cx25840_vol_to_dB(int v) 64269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls{ 65269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls if (v < (23 << 9)) 66269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls v = (23 << 9); 67269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls else if (v > (127 << 9)) 68269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls v = (127 << 9); 69269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls return (v >> 9) - 119; 70269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls} 71269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls 72269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Wallsstatic int snd_ivtv_mixer_tv_vol_info(struct snd_kcontrol *kcontrol, 73269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls struct snd_ctl_elem_info *uinfo) 74269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls{ 75269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 76269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls uinfo->count = 1; 77269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls /* We're already translating values, just keep this control in dB */ 78269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls uinfo->value.integer.min = -96; 79269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls uinfo->value.integer.max = 8; 80269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls uinfo->value.integer.step = 1; 81269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls return 0; 82269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls} 83269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls 84269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Wallsstatic int snd_ivtv_mixer_tv_vol_get(struct snd_kcontrol *kctl, 85269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls struct snd_ctl_elem_value *uctl) 86269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls{ 87269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls struct snd_ivtv_card *itvsc = snd_kcontrol_chip(kctl); 88269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls struct ivtv *itv = to_ivtv(itvsc->v4l2_dev); 89269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls struct v4l2_control vctrl; 90269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls int ret; 91269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls 92269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls vctrl.id = V4L2_CID_AUDIO_VOLUME; 93269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls vctrl.value = dB_to_cx25840_vol(uctl->value.integer.value[0]); 94269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls 95269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls snd_ivtv_lock(itvsc); 96269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls ret = v4l2_subdev_call(itv->sd_audio, core, g_ctrl, &vctrl); 97269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls snd_ivtv_unlock(itvsc); 98269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls 99269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls if (!ret) 100269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls uctl->value.integer.value[0] = cx25840_vol_to_dB(vctrl.value); 101269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls return ret; 102269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls} 103269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls 104269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Wallsstatic int snd_ivtv_mixer_tv_vol_put(struct snd_kcontrol *kctl, 105269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls struct snd_ctl_elem_value *uctl) 106269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls{ 107269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls struct snd_ivtv_card *itvsc = snd_kcontrol_chip(kctl); 108269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls struct ivtv *itv = to_ivtv(itvsc->v4l2_dev); 109269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls struct v4l2_control vctrl; 110269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls int ret; 111269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls 112269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls vctrl.id = V4L2_CID_AUDIO_VOLUME; 113269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls vctrl.value = dB_to_cx25840_vol(uctl->value.integer.value[0]); 114269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls 115269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls snd_ivtv_lock(itvsc); 116269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls 117269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls /* Fetch current state */ 118269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls ret = v4l2_subdev_call(itv->sd_audio, core, g_ctrl, &vctrl); 119269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls 120269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls if (ret || 121269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls (cx25840_vol_to_dB(vctrl.value) != uctl->value.integer.value[0])) { 122269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls 123269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls /* Set, if needed */ 124269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls vctrl.value = dB_to_cx25840_vol(uctl->value.integer.value[0]); 125269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls ret = v4l2_subdev_call(itv->sd_audio, core, s_ctrl, &vctrl); 126269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls if (!ret) 127269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls ret = 1; /* Indicate control was changed w/o error */ 128269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls } 129269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls snd_ivtv_unlock(itvsc); 130269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls 131269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls return ret; 132269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls} 133269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls 134269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls 135269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls/* This is a bit of overkill, the slider is already in dB internally */ 136269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Wallsstatic DECLARE_TLV_DB_SCALE(snd_ivtv_mixer_tv_vol_db_scale, -9600, 100, 0); 137269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls 138269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Wallsstatic struct snd_kcontrol_new snd_ivtv_mixer_tv_vol __initdata = { 139269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 140269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls .name = "Analog TV Capture Volume", 141269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | 142269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls SNDRV_CTL_ELEM_ACCESS_TLV_READ, 143269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls .info = snd_ivtv_mixer_tv_volume_info, 144269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls .get = snd_ivtv_mixer_tv_volume_get, 145269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls .put = snd_ivtv_mixer_tv_volume_put, 146269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls .tlv.p = snd_ivtv_mixer_tv_vol_db_scale 147269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls}; 148269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls 149269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls/* FIXME - add mute switch and balance, bass, treble sliders: 150269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls V4L2_CID_AUDIO_MUTE 151269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls 152269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls V4L2_CID_AUDIO_BALANCE 153269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls 154269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls V4L2_CID_AUDIO_BASS 155269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls V4L2_CID_AUDIO_TREBLE 156269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls*/ 157269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls 158269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls/* FIXME - add stereo, lang1, lang2, mono menu */ 159269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls/* FIXME - add I2S volume */ 160269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls 161269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Wallsint __init snd_ivtv_mixer_create(struct snd_ivtv_card *itvsc) 162269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls{ 163269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls struct v4l2_device *v4l2_dev = itvsc->v4l2_dev; 164269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls struct snd_card *sc = itvsc->sc; 165269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls int ret; 166269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls 167269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls strlcpy(sc->mixername, "CX2341[56] Mixer", sizeof(sc->mixername)); 168269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls 169269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls ret = snd_ctl_add(sc, snd_ctl_new1(snd_ivtv_mixer_tv_vol, itvsc)); 170269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls if (ret) { 171269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls IVTV_ALSA_WARN("%s: failed to add %s control, err %d\n", 172269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls __func__, snd_ivtv_mixer_tv_vol.name, ret); 173269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls } 174269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls return ret; 175269c11fbac4f7b4ed58e77f3049b64b55a342234Andy Walls} 176