projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 57d4bf6d JK |
1 | #include <sound/driver.h> |
| 2 | #include <sound/core.h> | |
| 3 | #include <sound/info.h> | |
| 4 | #include <sound/control.h> | |
| 5 | #include <sound/ac97_codec.h> | |
| c8974be5 JC |
6 | |
| 7 | #include <asm/olpc.h> | |
| 57d4bf6d JK |
8 | #include "cs5535audio.h" |
| 9 | ||
| d6276b78 AS |
10 | /* |
| 11 | * OLPC has an additional feature on top of the regular AD1888 codec features. | |
| 12 | * It has an Analog Input mode that is switched into (after disabling the | |
| 13 | * High Pass Filter) via GPIO. It is supported on B2 and later models. | |
| 14 | */ | |
| 15 | void olpc_analog_input(struct snd_ac97 *ac97, int on) | |
| 16 | { | |
| 17 | int err; | |
| 18 | ||
| 19 | /* update the High Pass Filter (via AC97_AD_TEST2) */ | |
| 20 | err = snd_ac97_update_bits(ac97, AC97_AD_TEST2, | |
| 21 | 1 << AC97_AD_HPFD_SHIFT, on << AC97_AD_HPFD_SHIFT); | |
| 22 | if (err < 0) { | |
| 23 | snd_printk(KERN_ERR "setting High Pass Filter - %d\n", err); | |
| 24 | return; | |
| 25 | } | |
| 26 | ||
| 27 | /* set Analog Input through GPIO */ | |
| 28 | if (on) | |
| 29 | geode_gpio_set(OLPC_GPIO_MIC_AC, GPIO_OUTPUT_VAL); | |
| 30 | else | |
| 31 | geode_gpio_clear(OLPC_GPIO_MIC_AC, GPIO_OUTPUT_VAL); | |
| 32 | } | |
| 57d4bf6d | 33 | |
| 466ae305 AS |
34 | static int olpc_dc_info(struct snd_kcontrol *kctl, |
| 35 | struct snd_ctl_elem_info *uinfo) | |
| 57d4bf6d JK |
36 | { |
| 37 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
| 38 | uinfo->count = 1; | |
| 39 | uinfo->value.integer.min = 0; | |
| 40 | uinfo->value.integer.max = 1; | |
| 41 | return 0; | |
| 42 | } | |
| 43 | ||
| 466ae305 | 44 | static int olpc_dc_get(struct snd_kcontrol *kctl, struct snd_ctl_elem_value *v) |
| 57d4bf6d | 45 | { |
| 189d34e7 AS |
46 | v->value.integer.value[0] = geode_gpio_isset(OLPC_GPIO_MIC_AC, |
| 47 | GPIO_OUTPUT_VAL); | |
| 57d4bf6d JK |
48 | return 0; |
| 49 | } | |
| 50 | ||
| 466ae305 | 51 | static int olpc_dc_put(struct snd_kcontrol *kctl, struct snd_ctl_elem_value *v) |
| 57d4bf6d | 52 | { |
| 466ae305 | 53 | struct cs5535audio *cs5535au = snd_kcontrol_chip(kctl); |
| 57d4bf6d | 54 | |
| 466ae305 | 55 | olpc_analog_input(cs5535au->ac97, v->value.integer.value[0]); |
| 57d4bf6d JK |
56 | return 1; |
| 57 | } | |
| 58 | ||
| 59 | static struct snd_kcontrol_new snd_cs5535audio_controls __devinitdata = | |
| 60 | { | |
| 61 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
| 466ae305 AS |
62 | .name = "DC Mode Enable", |
| 63 | .info = olpc_dc_info, | |
| 64 | .get = olpc_dc_get, | |
| 65 | .put = olpc_dc_put, | |
| 57d4bf6d JK |
66 | .private_value = 0 |
| 67 | }; | |
| 68 | ||
| 3556d184 AS |
69 | void __devinit olpc_prequirks(struct snd_card *card, |
| 70 | struct snd_ac97_template *ac97) | |
| 71 | { | |
| 72 | if (!machine_is_olpc()) | |
| 73 | return; | |
| 74 | ||
| 75 | /* invert EAPD if on an OLPC B3 or higher */ | |
| 76 | if (olpc_board_at_least(olpc_board_pre(0xb3))) | |
| 77 | ac97->scaps |= AC97_SCAP_INV_EAPD; | |
| 78 | } | |
| 79 | ||
| 57d4bf6d JK |
80 | int __devinit olpc_quirks(struct snd_card *card, struct snd_ac97 *ac97) |
| 81 | { | |
| 466ae305 AS |
82 | struct snd_ctl_elem_id elem; |
| 83 | ||
| c8974be5 JC |
84 | if (!machine_is_olpc()) |
| 85 | return 0; | |
| 86 | ||
| 466ae305 AS |
87 | /* drop the original AD1888 HPF control */ |
| 88 | memset(&elem, 0, sizeof(elem)); | |
| 89 | elem.iface = SNDRV_CTL_ELEM_IFACE_MIXER; | |
| 90 | strncpy(elem.name, "High Pass Filter Enable", sizeof(elem.name)); | |
| 91 | snd_ctl_remove_id(card, &elem); | |
| 92 | ||
| 93 | /* add the override for OLPC's HPF */ | |
| 57d4bf6d JK |
94 | return snd_ctl_add(card, snd_ctl_new1(&snd_cs5535audio_controls, |
| 95 | ac97->private_data)); | |
| 96 | } | |
| 97 |