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Commit 26a6181f authored by Corentin Labbe's avatar Corentin Labbe Committed by Mauro Carvalho Chehab
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media: cx18: remove unused cx18-alsa-mixer 



cx18-alsa-mixer functions are not used since commit 4cb565cc
("V4L/DVB: cx18: make it so cx18-alsa-main.c compiles") 9 year later,
let's just remove them.

Signed-off-by: default avatarCorentin Labbe <clabbe@baylibre.com>
Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@s-opensource.com>
parent fc49d3d7

drivers/media/pci/cx18/cx18-alsa-main.c

+0 −1
Original line number Diff line number Diff line
@@ -32,7 +32,6 @@ 
#include "cx18-driver.h"

#include "cx18-version.h"

#include "cx18-alsa.h"

#include "cx18-alsa-mixer.h"

#include "cx18-alsa-pcm.h"



int cx18_alsa_debug;

drivers/media/pci/cx18/cx18-alsa-mixer.c

deleted100644 → 0
+0 −170
Original line number Diff line number Diff line 
/*

 *  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.

 */



#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_g_ctrl(cx->sd_av->ctrl_handler, &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_g_ctrl(cx->sd_av->ctrl_handler, &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_s_ctrl(cx->sd_av->ctrl_handler, &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;

}

drivers/media/pci/cx18/cx18-alsa-mixer.h

deleted100644 → 0
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Original line number Diff line number Diff line 
/*

 *  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.

 */



int __init snd_cx18_mixer_create(struct snd_cx18_card *cxsc);