Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * OPL4 mixer functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * Copyright (c) 2003 by Clemens Ladisch <clemens@ladisch.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #include "opl4_local.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #include <sound/control.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) static int snd_opl4_ctl_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 	uinfo->count = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 	uinfo->value.integer.min = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 	uinfo->value.integer.max = 7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) static int snd_opl4_ctl_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	struct snd_opl4 *opl4 = snd_kcontrol_chip(kcontrol);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	u8 reg = kcontrol->private_value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	u8 value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	spin_lock_irqsave(&opl4->reg_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	value = snd_opl4_read(opl4, reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	spin_unlock_irqrestore(&opl4->reg_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	ucontrol->value.integer.value[0] = 7 - (value & 7);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	ucontrol->value.integer.value[1] = 7 - ((value >> 3) & 7);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) static int snd_opl4_ctl_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	struct snd_opl4 *opl4 = snd_kcontrol_chip(kcontrol);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	u8 reg = kcontrol->private_value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	u8 value, old_value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	value = (7 - (ucontrol->value.integer.value[0] & 7)) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 		((7 - (ucontrol->value.integer.value[1] & 7)) << 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	spin_lock_irqsave(&opl4->reg_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	old_value = snd_opl4_read(opl4, reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	snd_opl4_write(opl4, reg, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	spin_unlock_irqrestore(&opl4->reg_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	return value != old_value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) static const struct snd_kcontrol_new snd_opl4_controls[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 		.name = "FM Playback Volume",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 		.info = snd_opl4_ctl_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 		.get = snd_opl4_ctl_get,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 		.put = snd_opl4_ctl_put,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 		.private_value = OPL4_REG_MIX_CONTROL_FM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 		.name = "Wavetable Playback Volume",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 		.info = snd_opl4_ctl_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 		.get = snd_opl4_ctl_get,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 		.put = snd_opl4_ctl_put,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 		.private_value = OPL4_REG_MIX_CONTROL_PCM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) int snd_opl4_create_mixer(struct snd_opl4 *opl4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 	struct snd_card *card = opl4->card;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 	int i, err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 	strcat(card->mixername, ",OPL4");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) 	for (i = 0; i < 2; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 		err = snd_ctl_add(card, snd_ctl_new1(&snd_opl4_controls[i], opl4));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) 		if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) 			return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) }