include/sound/control.h

1 /* SPDX-License-Identifier: GPL-2.0-or-later */
14 #define snd_kcontrol_chip(kcontrol) ((kcontrol)->private_data)
29 	((info)->access & SNDRV_CTL_ELEM_ACCESS_SKIP_CHECK)
35 /* kernel only - LED bits */
37 #define SNDRV_CTL_ELEM_ACCESS_LED_MASK		(7<<25) /* kernel three bits - LED group */
38 #define SNDRV_CTL_ELEM_ACCESS_SPK_LED		(1<<25) /* kernel speaker (output) LED flag */
39 #define SNDRV_CTL_ELEM_ACCESS_MIC_LED		(2<<25) /* kernel microphone (input) LED flag */
44 	SNDRV_CTL_TLV_OP_CMD = -1,
149  * snd_ctl_find_id_mixer - find the control instance with the given name string
190 	unsigned int ioff = id->numid - kctl->id.numid;  in snd_ctl_get_ioffnum()
191 	return array_index_nospec(ioff, kctl->count);  in snd_ctl_get_ioffnum()
196 	unsigned int ioff = id->index - kctl->id.index;  in snd_ctl_get_ioffidx()
197 	return array_index_nospec(ioff, kctl->count);  in snd_ctl_get_ioffidx()
202 	if (id->numid) {  in snd_ctl_get_ioff()
213 	*dst_id = src_kctl->id;  in snd_ctl_build_ioff()
214 	dst_id->index += offset;  in snd_ctl_build_ioff()
215 	dst_id->numid += offset;  in snd_ctl_build_ioff()
230  * virtual master control
234 int _snd_ctl_add_follower(struct snd_kcontrol *master,
241  * snd_ctl_add_follower - Add a virtual follower control
242  * @master: vmaster element
245  * Add a virtual follower control to the given master element created via
255  * master can only attenuate the volume without gain
260 snd_ctl_add_follower(struct snd_kcontrol *master, struct snd_kcontrol *follower)  in snd_ctl_add_follower()  argument
262 	return _snd_ctl_add_follower(master, follower, 0);  in snd_ctl_add_follower()
265 int snd_ctl_add_followers(struct snd_card *card, struct snd_kcontrol *master,
269  * snd_ctl_add_follower_uncached - Add a virtual follower control
270  * @master: vmaster element
273  * Add a virtual follower control to the given master.
276  * at each time queried from the master.
280  * this function should be used to keep the value always up-to-date.
285 snd_ctl_add_follower_uncached(struct snd_kcontrol *master,  in snd_ctl_add_follower_uncached()  argument
288 	return _snd_ctl_add_follower(master, follower, SND_CTL_FOLLOWER_NEED_UPDATE);  in snd_ctl_add_follower_uncached()
305 #define SND_CTL_LAYER_MODULE_LED	"snd-ctl-led"
314  * Helper functions for jack-detection controls