mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
bcb63314e2
Drop the FSF's postal address from the source code files that typically
contain mostly the license text. Of the 628 removed instances, 578 are
outdated.
The patch has been created with the following command without manual edits:
git grep -l "675 Mass Ave\|59 Temple Place\|51 Franklin St" -- \
drivers/media/ include/media|while read i; do i=$i perl -e '
open(F,"< $ENV{i}");
$a=join("", <F>);
$a =~ s/[ \t]*\*\n.*You should.*\n.*along with.*\n.*(\n.*USA.*$)?\n//m
&& $a =~ s/(^.*)Or, (point your browser to) /$1To obtain the license, $2\n$1/m;
close(F);
open(F, "> $ENV{i}");
print F $a;
close(F);'; done
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
171 lines
4.5 KiB
C
171 lines
4.5 KiB
C
/*
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* ALSA mixer controls for the
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* ALSA interface to cx18 PCM capture streams
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*
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* Copyright (C) 2009 Andy Walls <awalls@md.metrocast.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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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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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/device.h>
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#include <linux/spinlock.h>
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#include <linux/videodev2.h>
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#include <media/v4l2-device.h>
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#include <sound/core.h>
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#include <sound/control.h>
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#include <sound/tlv.h>
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#include "cx18-alsa.h"
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#include "cx18-driver.h"
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/*
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* Note the cx18-av-core volume scale is funny, due to the alignment of the
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* scale with another chip's range:
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*
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* v4l2_control value /512 indicated dB actual dB reg 0x8d4
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* 0x0000 - 0x01ff 0 -119 -96 228
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* 0x0200 - 0x02ff 1 -118 -96 228
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* ...
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* 0x2c00 - 0x2dff 22 -97 -96 228
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* 0x2e00 - 0x2fff 23 -96 -96 228
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* 0x3000 - 0x31ff 24 -95 -95 226
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* ...
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* 0xee00 - 0xefff 119 0 0 36
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* ...
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* 0xfe00 - 0xffff 127 +8 +8 20
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*/
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static inline int dB_to_cx18_av_vol(int dB)
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{
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if (dB < -96)
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dB = -96;
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else if (dB > 8)
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dB = 8;
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return (dB + 119) << 9;
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}
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static inline int cx18_av_vol_to_dB(int v)
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{
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if (v < (23 << 9))
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v = (23 << 9);
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else if (v > (127 << 9))
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v = (127 << 9);
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return (v >> 9) - 119;
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}
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static int snd_cx18_mixer_tv_vol_info(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_info *uinfo)
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{
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uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
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uinfo->count = 1;
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/* We're already translating values, just keep this control in dB */
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uinfo->value.integer.min = -96;
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uinfo->value.integer.max = 8;
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uinfo->value.integer.step = 1;
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return 0;
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}
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static int snd_cx18_mixer_tv_vol_get(struct snd_kcontrol *kctl,
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struct snd_ctl_elem_value *uctl)
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{
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struct snd_cx18_card *cxsc = snd_kcontrol_chip(kctl);
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struct cx18 *cx = to_cx18(cxsc->v4l2_dev);
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struct v4l2_control vctrl;
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int ret;
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vctrl.id = V4L2_CID_AUDIO_VOLUME;
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vctrl.value = dB_to_cx18_av_vol(uctl->value.integer.value[0]);
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snd_cx18_lock(cxsc);
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ret = v4l2_g_ctrl(cx->sd_av->ctrl_handler, &vctrl);
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snd_cx18_unlock(cxsc);
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if (!ret)
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uctl->value.integer.value[0] = cx18_av_vol_to_dB(vctrl.value);
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return ret;
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}
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static int snd_cx18_mixer_tv_vol_put(struct snd_kcontrol *kctl,
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struct snd_ctl_elem_value *uctl)
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{
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struct snd_cx18_card *cxsc = snd_kcontrol_chip(kctl);
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struct cx18 *cx = to_cx18(cxsc->v4l2_dev);
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struct v4l2_control vctrl;
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int ret;
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vctrl.id = V4L2_CID_AUDIO_VOLUME;
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vctrl.value = dB_to_cx18_av_vol(uctl->value.integer.value[0]);
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snd_cx18_lock(cxsc);
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/* Fetch current state */
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ret = v4l2_g_ctrl(cx->sd_av->ctrl_handler, &vctrl);
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if (ret ||
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(cx18_av_vol_to_dB(vctrl.value) != uctl->value.integer.value[0])) {
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/* Set, if needed */
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vctrl.value = dB_to_cx18_av_vol(uctl->value.integer.value[0]);
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ret = v4l2_s_ctrl(cx->sd_av->ctrl_handler, &vctrl);
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if (!ret)
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ret = 1; /* Indicate control was changed w/o error */
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}
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snd_cx18_unlock(cxsc);
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return ret;
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}
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/* This is a bit of overkill, the slider is already in dB internally */
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static DECLARE_TLV_DB_SCALE(snd_cx18_mixer_tv_vol_db_scale, -9600, 100, 0);
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static struct snd_kcontrol_new snd_cx18_mixer_tv_vol __initdata = {
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.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
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.name = "Analog TV Capture Volume",
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.access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
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SNDRV_CTL_ELEM_ACCESS_TLV_READ,
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.info = snd_cx18_mixer_tv_volume_info,
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.get = snd_cx18_mixer_tv_volume_get,
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.put = snd_cx18_mixer_tv_volume_put,
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.tlv.p = snd_cx18_mixer_tv_vol_db_scale
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};
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/* FIXME - add mute switch and balance, bass, treble sliders:
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V4L2_CID_AUDIO_MUTE
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V4L2_CID_AUDIO_BALANCE
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V4L2_CID_AUDIO_BASS
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V4L2_CID_AUDIO_TREBLE
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*/
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/* FIXME - add stereo, lang1, lang2, mono menu */
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/* FIXME - add CS5345 I2S volume for HVR-1600 */
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int __init snd_cx18_mixer_create(struct snd_cx18_card *cxsc)
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{
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struct v4l2_device *v4l2_dev = cxsc->v4l2_dev;
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struct snd_card *sc = cxsc->sc;
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int ret;
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strlcpy(sc->mixername, "CX23418 Mixer", sizeof(sc->mixername));
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ret = snd_ctl_add(sc, snd_ctl_new1(snd_cx18_mixer_tv_vol, cxsc));
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if (ret) {
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CX18_ALSA_WARN("%s: failed to add %s control, err %d\n",
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__func__, snd_cx18_mixer_tv_vol.name, ret);
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}
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return ret;
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}
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