Commit | Line | Data |
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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
b5ccc57b AS |
2 | /* |
3 | * OLPC XO-1 additional sound features | |
4 | * | |
5 | * Copyright © 2006 Jaya Kumar <jayakumar.lkml@gmail.com> | |
6 | * Copyright © 2007-2008 Andres Salomon <dilinger@debian.org> | |
b5ccc57b | 7 | */ |
57d4bf6d JK |
8 | #include <sound/core.h> |
9 | #include <sound/info.h> | |
10 | #include <sound/control.h> | |
11 | #include <sound/ac97_codec.h> | |
3c554946 | 12 | #include <linux/gpio.h> |
c8974be5 JC |
13 | |
14 | #include <asm/olpc.h> | |
57d4bf6d JK |
15 | #include "cs5535audio.h" |
16 | ||
3c554946 AS |
17 | #define DRV_NAME "cs5535audio-olpc" |
18 | ||
d6276b78 AS |
19 | /* |
20 | * OLPC has an additional feature on top of the regular AD1888 codec features. | |
21 | * It has an Analog Input mode that is switched into (after disabling the | |
22 | * High Pass Filter) via GPIO. It is supported on B2 and later models. | |
23 | */ | |
24 | void olpc_analog_input(struct snd_ac97 *ac97, int on) | |
25 | { | |
26 | int err; | |
27 | ||
0fb497f5 AS |
28 | if (!machine_is_olpc()) |
29 | return; | |
30 | ||
d6276b78 AS |
31 | /* update the High Pass Filter (via AC97_AD_TEST2) */ |
32 | err = snd_ac97_update_bits(ac97, AC97_AD_TEST2, | |
33 | 1 << AC97_AD_HPFD_SHIFT, on << AC97_AD_HPFD_SHIFT); | |
34 | if (err < 0) { | |
00980aa9 TI |
35 | dev_err(ac97->bus->card->dev, |
36 | "setting High Pass Filter - %d\n", err); | |
d6276b78 AS |
37 | return; |
38 | } | |
39 | ||
40 | /* set Analog Input through GPIO */ | |
3c554946 | 41 | gpio_set_value(OLPC_GPIO_MIC_AC, on); |
d6276b78 | 42 | } |
57d4bf6d | 43 | |
bf1e5278 AS |
44 | /* |
45 | * OLPC XO-1's V_REFOUT is a mic bias enable. | |
46 | */ | |
47 | void olpc_mic_bias(struct snd_ac97 *ac97, int on) | |
48 | { | |
49 | int err; | |
50 | ||
0fb497f5 AS |
51 | if (!machine_is_olpc()) |
52 | return; | |
53 | ||
bf1e5278 AS |
54 | on = on ? 0 : 1; |
55 | err = snd_ac97_update_bits(ac97, AC97_AD_MISC, | |
56 | 1 << AC97_AD_VREFD_SHIFT, on << AC97_AD_VREFD_SHIFT); | |
57 | if (err < 0) | |
00980aa9 | 58 | dev_err(ac97->bus->card->dev, "setting MIC Bias - %d\n", err); |
bf1e5278 AS |
59 | } |
60 | ||
466ae305 AS |
61 | static int olpc_dc_info(struct snd_kcontrol *kctl, |
62 | struct snd_ctl_elem_info *uinfo) | |
57d4bf6d JK |
63 | { |
64 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
65 | uinfo->count = 1; | |
66 | uinfo->value.integer.min = 0; | |
67 | uinfo->value.integer.max = 1; | |
68 | return 0; | |
69 | } | |
70 | ||
466ae305 | 71 | static int olpc_dc_get(struct snd_kcontrol *kctl, struct snd_ctl_elem_value *v) |
57d4bf6d | 72 | { |
3c554946 | 73 | v->value.integer.value[0] = gpio_get_value(OLPC_GPIO_MIC_AC); |
57d4bf6d JK |
74 | return 0; |
75 | } | |
76 | ||
466ae305 | 77 | static int olpc_dc_put(struct snd_kcontrol *kctl, struct snd_ctl_elem_value *v) |
57d4bf6d | 78 | { |
466ae305 | 79 | struct cs5535audio *cs5535au = snd_kcontrol_chip(kctl); |
57d4bf6d | 80 | |
466ae305 | 81 | olpc_analog_input(cs5535au->ac97, v->value.integer.value[0]); |
57d4bf6d JK |
82 | return 1; |
83 | } | |
84 | ||
bf1e5278 AS |
85 | static int olpc_mic_info(struct snd_kcontrol *kctl, |
86 | struct snd_ctl_elem_info *uinfo) | |
87 | { | |
88 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
89 | uinfo->count = 1; | |
90 | uinfo->value.integer.min = 0; | |
91 | uinfo->value.integer.max = 1; | |
92 | return 0; | |
93 | } | |
94 | ||
95 | static int olpc_mic_get(struct snd_kcontrol *kctl, struct snd_ctl_elem_value *v) | |
96 | { | |
97 | struct cs5535audio *cs5535au = snd_kcontrol_chip(kctl); | |
98 | struct snd_ac97 *ac97 = cs5535au->ac97; | |
99 | int i; | |
100 | ||
101 | i = (snd_ac97_read(ac97, AC97_AD_MISC) >> AC97_AD_VREFD_SHIFT) & 0x1; | |
102 | v->value.integer.value[0] = i ? 0 : 1; | |
103 | return 0; | |
104 | } | |
105 | ||
106 | static int olpc_mic_put(struct snd_kcontrol *kctl, struct snd_ctl_elem_value *v) | |
107 | { | |
108 | struct cs5535audio *cs5535au = snd_kcontrol_chip(kctl); | |
109 | ||
110 | olpc_mic_bias(cs5535au->ac97, v->value.integer.value[0]); | |
111 | return 1; | |
112 | } | |
113 | ||
b4e5e707 | 114 | static const struct snd_kcontrol_new olpc_cs5535audio_ctls[] = { |
57d4bf6d JK |
115 | { |
116 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
466ae305 AS |
117 | .name = "DC Mode Enable", |
118 | .info = olpc_dc_info, | |
119 | .get = olpc_dc_get, | |
120 | .put = olpc_dc_put, | |
b5ccc57b | 121 | .private_value = 0, |
bf1e5278 AS |
122 | }, |
123 | { | |
124 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
125 | .name = "MIC Bias Enable", | |
126 | .info = olpc_mic_info, | |
127 | .get = olpc_mic_get, | |
128 | .put = olpc_mic_put, | |
129 | .private_value = 0, | |
130 | }, | |
57d4bf6d JK |
131 | }; |
132 | ||
e23e7a14 BP |
133 | void olpc_prequirks(struct snd_card *card, |
134 | struct snd_ac97_template *ac97) | |
3556d184 AS |
135 | { |
136 | if (!machine_is_olpc()) | |
137 | return; | |
138 | ||
139 | /* invert EAPD if on an OLPC B3 or higher */ | |
140 | if (olpc_board_at_least(olpc_board_pre(0xb3))) | |
141 | ac97->scaps |= AC97_SCAP_INV_EAPD; | |
142 | } | |
143 | ||
e23e7a14 | 144 | int olpc_quirks(struct snd_card *card, struct snd_ac97 *ac97) |
57d4bf6d | 145 | { |
466ae305 | 146 | struct snd_ctl_elem_id elem; |
bf1e5278 | 147 | int i, err; |
466ae305 | 148 | |
c8974be5 JC |
149 | if (!machine_is_olpc()) |
150 | return 0; | |
151 | ||
3c554946 | 152 | if (gpio_request(OLPC_GPIO_MIC_AC, DRV_NAME)) { |
00980aa9 | 153 | dev_err(card->dev, "unable to allocate MIC GPIO\n"); |
3c554946 AS |
154 | return -EIO; |
155 | } | |
156 | gpio_direction_output(OLPC_GPIO_MIC_AC, 0); | |
157 | ||
466ae305 AS |
158 | /* drop the original AD1888 HPF control */ |
159 | memset(&elem, 0, sizeof(elem)); | |
160 | elem.iface = SNDRV_CTL_ELEM_IFACE_MIXER; | |
75b1a8f9 | 161 | strscpy(elem.name, "High Pass Filter Enable", sizeof(elem.name)); |
466ae305 AS |
162 | snd_ctl_remove_id(card, &elem); |
163 | ||
bf1e5278 AS |
164 | /* drop the original V_REFOUT control */ |
165 | memset(&elem, 0, sizeof(elem)); | |
166 | elem.iface = SNDRV_CTL_ELEM_IFACE_MIXER; | |
75b1a8f9 | 167 | strscpy(elem.name, "V_REFOUT Enable", sizeof(elem.name)); |
bf1e5278 AS |
168 | snd_ctl_remove_id(card, &elem); |
169 | ||
170 | /* add the OLPC-specific controls */ | |
171 | for (i = 0; i < ARRAY_SIZE(olpc_cs5535audio_ctls); i++) { | |
172 | err = snd_ctl_add(card, snd_ctl_new1(&olpc_cs5535audio_ctls[i], | |
173 | ac97->private_data)); | |
5eba4c64 | 174 | if (err < 0) |
bf1e5278 AS |
175 | return err; |
176 | } | |
177 | ||
c8f0eeeb AS |
178 | /* turn off the mic by default */ |
179 | olpc_mic_bias(ac97, 0); | |
bf1e5278 | 180 | return 0; |
57d4bf6d | 181 | } |
3c554946 | 182 | |
e23e7a14 | 183 | void olpc_quirks_cleanup(void) |
3c554946 | 184 | { |
5eba4c64 TI |
185 | if (machine_is_olpc()) |
186 | gpio_free(OLPC_GPIO_MIC_AC); | |
3c554946 | 187 | } |