diff options
Diffstat (limited to 'drivers/media/video/cx18/cx18-alsa-mixer.c')
| -rw-r--r-- | drivers/media/video/cx18/cx18-alsa-mixer.c | 175 |
1 files changed, 0 insertions, 175 deletions
diff --git a/drivers/media/video/cx18/cx18-alsa-mixer.c b/drivers/media/video/cx18/cx18-alsa-mixer.c deleted file mode 100644 index 341bddc00b77..000000000000 --- a/drivers/media/video/cx18/cx18-alsa-mixer.c +++ /dev/null @@ -1,175 +0,0 @@ -/* - * ALSA mixer controls for the - * ALSA interface to cx18 PCM capture streams - * - * Copyright (C) 2009 Andy Walls <awalls@md.metrocast.net> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - * 02111-1307 USA - */ - -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/device.h> -#include <linux/spinlock.h> -#include <linux/videodev2.h> - -#include <media/v4l2-device.h> - -#include <sound/core.h> -#include <sound/control.h> -#include <sound/tlv.h> - -#include "cx18-alsa.h" -#include "cx18-driver.h" - -/* - * Note the cx18-av-core volume scale is funny, due to the alignment of the - * scale with another chip's range: - * - * v4l2_control value /512 indicated dB actual dB reg 0x8d4 - * 0x0000 - 0x01ff 0 -119 -96 228 - * 0x0200 - 0x02ff 1 -118 -96 228 - * ... - * 0x2c00 - 0x2dff 22 -97 -96 228 - * 0x2e00 - 0x2fff 23 -96 -96 228 - * 0x3000 - 0x31ff 24 -95 -95 226 - * ... - * 0xee00 - 0xefff 119 0 0 36 - * ... - * 0xfe00 - 0xffff 127 +8 +8 20 - */ -static inline int dB_to_cx18_av_vol(int dB) -{ - if (dB < -96) - dB = -96; - else if (dB > 8) - dB = 8; - return (dB + 119) << 9; -} - -static inline int cx18_av_vol_to_dB(int v) -{ - if (v < (23 << 9)) - v = (23 << 9); - else if (v > (127 << 9)) - v = (127 << 9); - return (v >> 9) - 119; -} - -static int snd_cx18_mixer_tv_vol_info(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_info *uinfo) -{ - uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; - uinfo->count = 1; - /* We're already translating values, just keep this control in dB */ - uinfo->value.integer.min = -96; - uinfo->value.integer.max = 8; - uinfo->value.integer.step = 1; - return 0; -} - -static int snd_cx18_mixer_tv_vol_get(struct snd_kcontrol *kctl, - struct snd_ctl_elem_value *uctl) -{ - struct snd_cx18_card *cxsc = snd_kcontrol_chip(kctl); - struct cx18 *cx = to_cx18(cxsc->v4l2_dev); - struct v4l2_control vctrl; - int ret; - - vctrl.id = V4L2_CID_AUDIO_VOLUME; - vctrl.value = dB_to_cx18_av_vol(uctl->value.integer.value[0]); - - snd_cx18_lock(cxsc); - ret = v4l2_subdev_call(cx->sd_av, core, g_ctrl, &vctrl); - snd_cx18_unlock(cxsc); - - if (!ret) - uctl->value.integer.value[0] = cx18_av_vol_to_dB(vctrl.value); - return ret; -} - -static int snd_cx18_mixer_tv_vol_put(struct snd_kcontrol *kctl, - struct snd_ctl_elem_value *uctl) -{ - struct snd_cx18_card *cxsc = snd_kcontrol_chip(kctl); - struct cx18 *cx = to_cx18(cxsc->v4l2_dev); - struct v4l2_control vctrl; - int ret; - - vctrl.id = V4L2_CID_AUDIO_VOLUME; - vctrl.value = dB_to_cx18_av_vol(uctl->value.integer.value[0]); - - snd_cx18_lock(cxsc); - - /* Fetch current state */ - ret = v4l2_subdev_call(cx->sd_av, core, g_ctrl, &vctrl); - - if (ret || - (cx18_av_vol_to_dB(vctrl.value) != uctl->value.integer.value[0])) { - - /* Set, if needed */ - vctrl.value = dB_to_cx18_av_vol(uctl->value.integer.value[0]); - ret = v4l2_subdev_call(cx->sd_av, core, s_ctrl, &vctrl); - if (!ret) - ret = 1; /* Indicate control was changed w/o error */ - } - snd_cx18_unlock(cxsc); - - return ret; -} - - -/* This is a bit of overkill, the slider is already in dB internally */ -static DECLARE_TLV_DB_SCALE(snd_cx18_mixer_tv_vol_db_scale, -9600, 100, 0); - -static struct snd_kcontrol_new snd_cx18_mixer_tv_vol __initdata = { - .iface = SNDRV_CTL_ELEM_IFACE_MIXER, - .name = "Analog TV Capture Volume", - .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | - SNDRV_CTL_ELEM_ACCESS_TLV_READ, - .info = snd_cx18_mixer_tv_volume_info, - .get = snd_cx18_mixer_tv_volume_get, - .put = snd_cx18_mixer_tv_volume_put, - .tlv.p = snd_cx18_mixer_tv_vol_db_scale -}; - -/* FIXME - add mute switch and balance, bass, treble sliders: - V4L2_CID_AUDIO_MUTE - - V4L2_CID_AUDIO_BALANCE - - V4L2_CID_AUDIO_BASS - V4L2_CID_AUDIO_TREBLE -*/ - -/* FIXME - add stereo, lang1, lang2, mono menu */ -/* FIXME - add CS5345 I2S volume for HVR-1600 */ - -int __init snd_cx18_mixer_create(struct snd_cx18_card *cxsc) -{ - struct v4l2_device *v4l2_dev = cxsc->v4l2_dev; - struct snd_card *sc = cxsc->sc; - int ret; - - strlcpy(sc->mixername, "CX23418 Mixer", sizeof(sc->mixername)); - - ret = snd_ctl_add(sc, snd_ctl_new1(snd_cx18_mixer_tv_vol, cxsc)); - if (ret) { - CX18_ALSA_WARN("%s: failed to add %s control, err %d\n", - __func__, snd_cx18_mixer_tv_vol.name, ret); - } - return ret; -} |