+++ /dev/null
-/*
- * Apple Onboard Audio driver for tas codec
- *
- * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
- *
- * GPL v2, can be found in COPYING.
- *
- * Open questions:
- * - How to distinguish between 3004 and versions?
- *
- * FIXMEs:
- * - This codec driver doesn't honour the 'connected'
- * property of the aoa_codec struct, hence if
- * it is used in machines where not everything is
- * connected it will display wrong mixer elements.
- * - Driver assumes that the microphone is always
- * monaureal and connected to the right channel of
- * the input. This should also be a codec-dependent
- * flag, maybe the codec should have 3 different
- * bits for the three different possibilities how
- * it can be hooked up...
- * But as long as I don't see any hardware hooked
- * up that way...
- * - As Apple notes in their code, the tas3004 seems
- * to delay the right channel by one sample. You can
- * see this when for example recording stereo in
- * audacity, or recording the tas output via cable
- * on another machine (use a sinus generator or so).
- * I tried programming the BiQuads but couldn't
- * make the delay work, maybe someone can read the
- * datasheet and fix it. The relevant Apple comment
- * is in AppleTAS3004Audio.cpp lines 1637 ff. Note
- * that their comment describing how they program
- * the filters sucks...
- *
- * Other things:
- * - this should actually register *two* aoa_codec
- * structs since it has two inputs. Then it must
- * use the prepare callback to forbid running the
- * secondary output on a different clock.
- * Also, whatever bus knows how to do this must
- * provide two soundbus_dev devices and the fabric
- * must be able to link them correctly.
- *
- * I don't even know if Apple ever uses the second
- * port on the tas3004 though, I don't think their
- * i2s controllers can even do it. OTOH, they all
- * derive the clocks from common clocks, so it
- * might just be possible. The framework allows the
- * codec to refine the transfer_info items in the
- * usable callback, so we can simply remove the
- * rates the second instance is not using when it
- * actually is in use.
- * Maybe we'll need to make the sound busses have
- * a 'clock group id' value so the codec can
- * determine if the two outputs can be driven at
- * the same time. But that is likely overkill, up
- * to the fabric to not link them up incorrectly,
- * and up to the hardware designer to not wire
- * them up in some weird unusable way.
- */
-#include <stddef.h>
-#include <linux/i2c.h>
-#include <asm/pmac_low_i2c.h>
-#include <asm/prom.h>
-#include <linux/delay.h>
-#include <linux/module.h>
-#include <linux/mutex.h>
-
-MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>");
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("tas codec driver for snd-aoa");
-
-#include "snd-aoa-codec-tas.h"
-#include "snd-aoa-codec-tas-gain-table.h"
-#include "snd-aoa-codec-tas-basstreble.h"
-#include "../aoa.h"
-#include "../soundbus/soundbus.h"
-
-#define PFX "snd-aoa-codec-tas: "
-
-
-struct tas {
- struct aoa_codec codec;
- struct i2c_client i2c;
- u32 mute_l:1, mute_r:1 ,
- controls_created:1 ,
- drc_enabled:1,
- hw_enabled:1;
- u8 cached_volume_l, cached_volume_r;
- u8 mixer_l[3], mixer_r[3];
- u8 bass, treble;
- u8 acr;
- int drc_range;
- /* protects hardware access against concurrency from
- * userspace when hitting controls and during
- * codec init/suspend/resume */
- struct mutex mtx;
-};
-
-static int tas_reset_init(struct tas *tas);
-
-static struct tas *codec_to_tas(struct aoa_codec *codec)
-{
- return container_of(codec, struct tas, codec);
-}
-
-static inline int tas_write_reg(struct tas *tas, u8 reg, u8 len, u8 *data)
-{
- if (len == 1)
- return i2c_smbus_write_byte_data(&tas->i2c, reg, *data);
- else
- return i2c_smbus_write_i2c_block_data(&tas->i2c, reg, len, data);
-}
-
-static void tas3004_set_drc(struct tas *tas)
-{
- unsigned char val[6];
-
- if (tas->drc_enabled)
- val[0] = 0x50; /* 3:1 above threshold */
- else
- val[0] = 0x51; /* disabled */
- val[1] = 0x02; /* 1:1 below threshold */
- if (tas->drc_range > 0xef)
- val[2] = 0xef;
- else if (tas->drc_range < 0)
- val[2] = 0x00;
- else
- val[2] = tas->drc_range;
- val[3] = 0xb0;
- val[4] = 0x60;
- val[5] = 0xa0;
-
- tas_write_reg(tas, TAS_REG_DRC, 6, val);
-}
-
-static void tas_set_treble(struct tas *tas)
-{
- u8 tmp;
-
- tmp = tas3004_treble(tas->treble);
- tas_write_reg(tas, TAS_REG_TREBLE, 1, &tmp);
-}
-
-static void tas_set_bass(struct tas *tas)
-{
- u8 tmp;
-
- tmp = tas3004_bass(tas->bass);
- tas_write_reg(tas, TAS_REG_BASS, 1, &tmp);
-}
-
-static void tas_set_volume(struct tas *tas)
-{
- u8 block[6];
- int tmp;
- u8 left, right;
-
- left = tas->cached_volume_l;
- right = tas->cached_volume_r;
-
- if (left > 177) left = 177;
- if (right > 177) right = 177;
-
- if (tas->mute_l) left = 0;
- if (tas->mute_r) right = 0;
-
- /* analysing the volume and mixer tables shows
- * that they are similar enough when we shift
- * the mixer table down by 4 bits. The error
- * is miniscule, in just one item the error
- * is 1, at a value of 0x07f17b (mixer table
- * value is 0x07f17a) */
- tmp = tas_gaintable[left];
- block[0] = tmp>>20;
- block[1] = tmp>>12;
- block[2] = tmp>>4;
- tmp = tas_gaintable[right];
- block[3] = tmp>>20;
- block[4] = tmp>>12;
- block[5] = tmp>>4;
- tas_write_reg(tas, TAS_REG_VOL, 6, block);
-}
-
-static void tas_set_mixer(struct tas *tas)
-{
- u8 block[9];
- int tmp, i;
- u8 val;
-
- for (i=0;i<3;i++) {
- val = tas->mixer_l[i];
- if (val > 177) val = 177;
- tmp = tas_gaintable[val];
- block[3*i+0] = tmp>>16;
- block[3*i+1] = tmp>>8;
- block[3*i+2] = tmp;
- }
- tas_write_reg(tas, TAS_REG_LMIX, 9, block);
-
- for (i=0;i<3;i++) {
- val = tas->mixer_r[i];
- if (val > 177) val = 177;
- tmp = tas_gaintable[val];
- block[3*i+0] = tmp>>16;
- block[3*i+1] = tmp>>8;
- block[3*i+2] = tmp;
- }
- tas_write_reg(tas, TAS_REG_RMIX, 9, block);
-}
-
-/* alsa stuff */
-
-static int tas_dev_register(struct snd_device *dev)
-{
- return 0;
-}
-
-static struct snd_device_ops ops = {
- .dev_register = tas_dev_register,
-};
-
-static int tas_snd_vol_info(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_info *uinfo)
-{
- uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
- uinfo->count = 2;
- uinfo->value.integer.min = 0;
- uinfo->value.integer.max = 177;
- return 0;
-}
-
-static int tas_snd_vol_get(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- struct tas *tas = snd_kcontrol_chip(kcontrol);
-
- mutex_lock(&tas->mtx);
- ucontrol->value.integer.value[0] = tas->cached_volume_l;
- ucontrol->value.integer.value[1] = tas->cached_volume_r;
- mutex_unlock(&tas->mtx);
- return 0;
-}
-
-static int tas_snd_vol_put(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- struct tas *tas = snd_kcontrol_chip(kcontrol);
-
- if (ucontrol->value.integer.value[0] < 0 ||
- ucontrol->value.integer.value[0] > 177)
- return -EINVAL;
- if (ucontrol->value.integer.value[1] < 0 ||
- ucontrol->value.integer.value[1] > 177)
- return -EINVAL;
-
- mutex_lock(&tas->mtx);
- if (tas->cached_volume_l == ucontrol->value.integer.value[0]
- && tas->cached_volume_r == ucontrol->value.integer.value[1]) {
- mutex_unlock(&tas->mtx);
- return 0;
- }
-
- tas->cached_volume_l = ucontrol->value.integer.value[0];
- tas->cached_volume_r = ucontrol->value.integer.value[1];
- if (tas->hw_enabled)
- tas_set_volume(tas);
- mutex_unlock(&tas->mtx);
- return 1;
-}
-
-static struct snd_kcontrol_new volume_control = {
- .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
- .name = "Master Playback Volume",
- .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
- .info = tas_snd_vol_info,
- .get = tas_snd_vol_get,
- .put = tas_snd_vol_put,
-};
-
-#define tas_snd_mute_info snd_ctl_boolean_stereo_info
-
-static int tas_snd_mute_get(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- struct tas *tas = snd_kcontrol_chip(kcontrol);
-
- mutex_lock(&tas->mtx);
- ucontrol->value.integer.value[0] = !tas->mute_l;
- ucontrol->value.integer.value[1] = !tas->mute_r;
- mutex_unlock(&tas->mtx);
- return 0;
-}
-
-static int tas_snd_mute_put(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- struct tas *tas = snd_kcontrol_chip(kcontrol);
-
- mutex_lock(&tas->mtx);
- if (tas->mute_l == !ucontrol->value.integer.value[0]
- && tas->mute_r == !ucontrol->value.integer.value[1]) {
- mutex_unlock(&tas->mtx);
- return 0;
- }
-
- tas->mute_l = !ucontrol->value.integer.value[0];
- tas->mute_r = !ucontrol->value.integer.value[1];
- if (tas->hw_enabled)
- tas_set_volume(tas);
- mutex_unlock(&tas->mtx);
- return 1;
-}
-
-static struct snd_kcontrol_new mute_control = {
- .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
- .name = "Master Playback Switch",
- .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
- .info = tas_snd_mute_info,
- .get = tas_snd_mute_get,
- .put = tas_snd_mute_put,
-};
-
-static int tas_snd_mixer_info(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_info *uinfo)
-{
- uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
- uinfo->count = 2;
- uinfo->value.integer.min = 0;
- uinfo->value.integer.max = 177;
- return 0;
-}
-
-static int tas_snd_mixer_get(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- struct tas *tas = snd_kcontrol_chip(kcontrol);
- int idx = kcontrol->private_value;
-
- mutex_lock(&tas->mtx);
- ucontrol->value.integer.value[0] = tas->mixer_l[idx];
- ucontrol->value.integer.value[1] = tas->mixer_r[idx];
- mutex_unlock(&tas->mtx);
-
- return 0;
-}
-
-static int tas_snd_mixer_put(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- struct tas *tas = snd_kcontrol_chip(kcontrol);
- int idx = kcontrol->private_value;
-
- mutex_lock(&tas->mtx);
- if (tas->mixer_l[idx] == ucontrol->value.integer.value[0]
- && tas->mixer_r[idx] == ucontrol->value.integer.value[1]) {
- mutex_unlock(&tas->mtx);
- return 0;
- }
-
- tas->mixer_l[idx] = ucontrol->value.integer.value[0];
- tas->mixer_r[idx] = ucontrol->value.integer.value[1];
-
- if (tas->hw_enabled)
- tas_set_mixer(tas);
- mutex_unlock(&tas->mtx);
- return 1;
-}
-
-#define MIXER_CONTROL(n,descr,idx) \
-static struct snd_kcontrol_new n##_control = { \
- .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
- .name = descr " Playback Volume", \
- .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, \
- .info = tas_snd_mixer_info, \
- .get = tas_snd_mixer_get, \
- .put = tas_snd_mixer_put, \
- .private_value = idx, \
-}
-
-MIXER_CONTROL(pcm1, "PCM", 0);
-MIXER_CONTROL(monitor, "Monitor", 2);
-
-static int tas_snd_drc_range_info(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_info *uinfo)
-{
- uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
- uinfo->count = 1;
- uinfo->value.integer.min = 0;
- uinfo->value.integer.max = TAS3004_DRC_MAX;
- return 0;
-}
-
-static int tas_snd_drc_range_get(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- struct tas *tas = snd_kcontrol_chip(kcontrol);
-
- mutex_lock(&tas->mtx);
- ucontrol->value.integer.value[0] = tas->drc_range;
- mutex_unlock(&tas->mtx);
- return 0;
-}
-
-static int tas_snd_drc_range_put(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- struct tas *tas = snd_kcontrol_chip(kcontrol);
-
- if (ucontrol->value.integer.value[0] < 0 ||
- ucontrol->value.integer.value[0] > TAS3004_DRC_MAX)
- return -EINVAL;
-
- mutex_lock(&tas->mtx);
- if (tas->drc_range == ucontrol->value.integer.value[0]) {
- mutex_unlock(&tas->mtx);
- return 0;
- }
-
- tas->drc_range = ucontrol->value.integer.value[0];
- if (tas->hw_enabled)
- tas3004_set_drc(tas);
- mutex_unlock(&tas->mtx);
- return 1;
-}
-
-static struct snd_kcontrol_new drc_range_control = {
- .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
- .name = "DRC Range",
- .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
- .info = tas_snd_drc_range_info,
- .get = tas_snd_drc_range_get,
- .put = tas_snd_drc_range_put,
-};
-
-#define tas_snd_drc_switch_info snd_ctl_boolean_mono_info
-
-static int tas_snd_drc_switch_get(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- struct tas *tas = snd_kcontrol_chip(kcontrol);
-
- mutex_lock(&tas->mtx);
- ucontrol->value.integer.value[0] = tas->drc_enabled;
- mutex_unlock(&tas->mtx);
- return 0;
-}
-
-static int tas_snd_drc_switch_put(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- struct tas *tas = snd_kcontrol_chip(kcontrol);
-
- mutex_lock(&tas->mtx);
- if (tas->drc_enabled == ucontrol->value.integer.value[0]) {
- mutex_unlock(&tas->mtx);
- return 0;
- }
-
- tas->drc_enabled = !!ucontrol->value.integer.value[0];
- if (tas->hw_enabled)
- tas3004_set_drc(tas);
- mutex_unlock(&tas->mtx);
- return 1;
-}
-
-static struct snd_kcontrol_new drc_switch_control = {
- .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
- .name = "DRC Range Switch",
- .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
- .info = tas_snd_drc_switch_info,
- .get = tas_snd_drc_switch_get,
- .put = tas_snd_drc_switch_put,
-};
-
-static int tas_snd_capture_source_info(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_info *uinfo)
-{
- static char *texts[] = { "Line-In", "Microphone" };
-
- uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
- uinfo->count = 1;
- uinfo->value.enumerated.items = 2;
- if (uinfo->value.enumerated.item > 1)
- uinfo->value.enumerated.item = 1;
- strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
- return 0;
-}
-
-static int tas_snd_capture_source_get(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- struct tas *tas = snd_kcontrol_chip(kcontrol);
-
- mutex_lock(&tas->mtx);
- ucontrol->value.enumerated.item[0] = !!(tas->acr & TAS_ACR_INPUT_B);
- mutex_unlock(&tas->mtx);
- return 0;
-}
-
-static int tas_snd_capture_source_put(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- struct tas *tas = snd_kcontrol_chip(kcontrol);
- int oldacr;
-
- if (ucontrol->value.enumerated.item[0] > 1)
- return -EINVAL;
- mutex_lock(&tas->mtx);
- oldacr = tas->acr;
-
- /*
- * Despite what the data sheet says in one place, the
- * TAS_ACR_B_MONAUREAL bit forces mono output even when
- * input A (line in) is selected.
- */
- tas->acr &= ~(TAS_ACR_INPUT_B | TAS_ACR_B_MONAUREAL);
- if (ucontrol->value.enumerated.item[0])
- tas->acr |= TAS_ACR_INPUT_B | TAS_ACR_B_MONAUREAL |
- TAS_ACR_B_MON_SEL_RIGHT;
- if (oldacr == tas->acr) {
- mutex_unlock(&tas->mtx);
- return 0;
- }
- if (tas->hw_enabled)
- tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr);
- mutex_unlock(&tas->mtx);
- return 1;
-}
-
-static struct snd_kcontrol_new capture_source_control = {
- .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
- /* If we name this 'Input Source', it properly shows up in
- * alsamixer as a selection, * but it's shown under the
- * 'Playback' category.
- * If I name it 'Capture Source', it shows up in strange
- * ways (two bools of which one can be selected at a
- * time) but at least it's shown in the 'Capture'
- * category.
- * I was told that this was due to backward compatibility,
- * but I don't understand then why the mangling is *not*
- * done when I name it "Input Source".....
- */
- .name = "Capture Source",
- .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
- .info = tas_snd_capture_source_info,
- .get = tas_snd_capture_source_get,
- .put = tas_snd_capture_source_put,
-};
-
-static int tas_snd_treble_info(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_info *uinfo)
-{
- uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
- uinfo->count = 1;
- uinfo->value.integer.min = TAS3004_TREBLE_MIN;
- uinfo->value.integer.max = TAS3004_TREBLE_MAX;
- return 0;
-}
-
-static int tas_snd_treble_get(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- struct tas *tas = snd_kcontrol_chip(kcontrol);
-
- mutex_lock(&tas->mtx);
- ucontrol->value.integer.value[0] = tas->treble;
- mutex_unlock(&tas->mtx);
- return 0;
-}
-
-static int tas_snd_treble_put(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- struct tas *tas = snd_kcontrol_chip(kcontrol);
-
- if (ucontrol->value.integer.value[0] < TAS3004_TREBLE_MIN ||
- ucontrol->value.integer.value[0] > TAS3004_TREBLE_MAX)
- return -EINVAL;
- mutex_lock(&tas->mtx);
- if (tas->treble == ucontrol->value.integer.value[0]) {
- mutex_unlock(&tas->mtx);
- return 0;
- }
-
- tas->treble = ucontrol->value.integer.value[0];
- if (tas->hw_enabled)
- tas_set_treble(tas);
- mutex_unlock(&tas->mtx);
- return 1;
-}
-
-static struct snd_kcontrol_new treble_control = {
- .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
- .name = "Treble",
- .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
- .info = tas_snd_treble_info,
- .get = tas_snd_treble_get,
- .put = tas_snd_treble_put,
-};
-
-static int tas_snd_bass_info(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_info *uinfo)
-{
- uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
- uinfo->count = 1;
- uinfo->value.integer.min = TAS3004_BASS_MIN;
- uinfo->value.integer.max = TAS3004_BASS_MAX;
- return 0;
-}
-
-static int tas_snd_bass_get(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- struct tas *tas = snd_kcontrol_chip(kcontrol);
-
- mutex_lock(&tas->mtx);
- ucontrol->value.integer.value[0] = tas->bass;
- mutex_unlock(&tas->mtx);
- return 0;
-}
-
-static int tas_snd_bass_put(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- struct tas *tas = snd_kcontrol_chip(kcontrol);
-
- if (ucontrol->value.integer.value[0] < TAS3004_BASS_MIN ||
- ucontrol->value.integer.value[0] > TAS3004_BASS_MAX)
- return -EINVAL;
- mutex_lock(&tas->mtx);
- if (tas->bass == ucontrol->value.integer.value[0]) {
- mutex_unlock(&tas->mtx);
- return 0;
- }
-
- tas->bass = ucontrol->value.integer.value[0];
- if (tas->hw_enabled)
- tas_set_bass(tas);
- mutex_unlock(&tas->mtx);
- return 1;
-}
-
-static struct snd_kcontrol_new bass_control = {
- .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
- .name = "Bass",
- .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
- .info = tas_snd_bass_info,
- .get = tas_snd_bass_get,
- .put = tas_snd_bass_put,
-};
-
-static struct transfer_info tas_transfers[] = {
- {
- /* input */
- .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S24_BE,
- .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
- .transfer_in = 1,
- },
- {
- /* output */
- .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S24_BE,
- .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
- .transfer_in = 0,
- },
- {}
-};
-
-static int tas_usable(struct codec_info_item *cii,
- struct transfer_info *ti,
- struct transfer_info *out)
-{
- return 1;
-}
-
-static int tas_reset_init(struct tas *tas)
-{
- u8 tmp;
-
- tas->codec.gpio->methods->all_amps_off(tas->codec.gpio);
- msleep(5);
- tas->codec.gpio->methods->set_hw_reset(tas->codec.gpio, 0);
- msleep(5);
- tas->codec.gpio->methods->set_hw_reset(tas->codec.gpio, 1);
- msleep(20);
- tas->codec.gpio->methods->set_hw_reset(tas->codec.gpio, 0);
- msleep(10);
- tas->codec.gpio->methods->all_amps_restore(tas->codec.gpio);
-
- tmp = TAS_MCS_SCLK64 | TAS_MCS_SPORT_MODE_I2S | TAS_MCS_SPORT_WL_24BIT;
- if (tas_write_reg(tas, TAS_REG_MCS, 1, &tmp))
- goto outerr;
-
- tas->acr |= TAS_ACR_ANALOG_PDOWN;
- if (tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr))
- goto outerr;
-
- tmp = 0;
- if (tas_write_reg(tas, TAS_REG_MCS2, 1, &tmp))
- goto outerr;
-
- tas3004_set_drc(tas);
-
- /* Set treble & bass to 0dB */
- tas->treble = TAS3004_TREBLE_ZERO;
- tas->bass = TAS3004_BASS_ZERO;
- tas_set_treble(tas);
- tas_set_bass(tas);
-
- tas->acr &= ~TAS_ACR_ANALOG_PDOWN;
- if (tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr))
- goto outerr;
-
- return 0;
- outerr:
- return -ENODEV;
-}
-
-static int tas_switch_clock(struct codec_info_item *cii, enum clock_switch clock)
-{
- struct tas *tas = cii->codec_data;
-
- switch(clock) {
- case CLOCK_SWITCH_PREPARE_SLAVE:
- /* Clocks are going away, mute mute mute */
- tas->codec.gpio->methods->all_amps_off(tas->codec.gpio);
- tas->hw_enabled = 0;
- break;
- case CLOCK_SWITCH_SLAVE:
- /* Clocks are back, re-init the codec */
- mutex_lock(&tas->mtx);
- tas_reset_init(tas);
- tas_set_volume(tas);
- tas_set_mixer(tas);
- tas->hw_enabled = 1;
- tas->codec.gpio->methods->all_amps_restore(tas->codec.gpio);
- mutex_unlock(&tas->mtx);
- break;
- default:
- /* doesn't happen as of now */
- return -EINVAL;
- }
- return 0;
-}
-
-#ifdef CONFIG_PM
-/* we are controlled via i2c and assume that is always up
- * If that wasn't the case, we'd have to suspend once
- * our i2c device is suspended, and then take note of that! */
-static int tas_suspend(struct tas *tas)
-{
- mutex_lock(&tas->mtx);
- tas->hw_enabled = 0;
- tas->acr |= TAS_ACR_ANALOG_PDOWN;
- tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr);
- mutex_unlock(&tas->mtx);
- return 0;
-}
-
-static int tas_resume(struct tas *tas)
-{
- /* reset codec */
- mutex_lock(&tas->mtx);
- tas_reset_init(tas);
- tas_set_volume(tas);
- tas_set_mixer(tas);
- tas->hw_enabled = 1;
- mutex_unlock(&tas->mtx);
- return 0;
-}
-
-static int _tas_suspend(struct codec_info_item *cii, pm_message_t state)
-{
- return tas_suspend(cii->codec_data);
-}
-
-static int _tas_resume(struct codec_info_item *cii)
-{
- return tas_resume(cii->codec_data);
-}
-#else /* CONFIG_PM */
-#define _tas_suspend NULL
-#define _tas_resume NULL
-#endif /* CONFIG_PM */
-
-static struct codec_info tas_codec_info = {
- .transfers = tas_transfers,
- /* in theory, we can drive it at 512 too...
- * but so far the framework doesn't allow
- * for that and I don't see much point in it. */
- .sysclock_factor = 256,
- /* same here, could be 32 for just one 16 bit format */
- .bus_factor = 64,
- .owner = THIS_MODULE,
- .usable = tas_usable,
- .switch_clock = tas_switch_clock,
- .suspend = _tas_suspend,
- .resume = _tas_resume,
-};
-
-static int tas_init_codec(struct aoa_codec *codec)
-{
- struct tas *tas = codec_to_tas(codec);
- int err;
-
- if (!tas->codec.gpio || !tas->codec.gpio->methods) {
- printk(KERN_ERR PFX "gpios not assigned!!\n");
- return -EINVAL;
- }
-
- mutex_lock(&tas->mtx);
- if (tas_reset_init(tas)) {
- printk(KERN_ERR PFX "tas failed to initialise\n");
- mutex_unlock(&tas->mtx);
- return -ENXIO;
- }
- tas->hw_enabled = 1;
- mutex_unlock(&tas->mtx);
-
- if (tas->codec.soundbus_dev->attach_codec(tas->codec.soundbus_dev,
- aoa_get_card(),
- &tas_codec_info, tas)) {
- printk(KERN_ERR PFX "error attaching tas to soundbus\n");
- return -ENODEV;
- }
-
- if (aoa_snd_device_new(SNDRV_DEV_LOWLEVEL, tas, &ops)) {
- printk(KERN_ERR PFX "failed to create tas snd device!\n");
- return -ENODEV;
- }
- err = aoa_snd_ctl_add(snd_ctl_new1(&volume_control, tas));
- if (err)
- goto error;
-
- err = aoa_snd_ctl_add(snd_ctl_new1(&mute_control, tas));
- if (err)
- goto error;
-
- err = aoa_snd_ctl_add(snd_ctl_new1(&pcm1_control, tas));
- if (err)
- goto error;
-
- err = aoa_snd_ctl_add(snd_ctl_new1(&monitor_control, tas));
- if (err)
- goto error;
-
- err = aoa_snd_ctl_add(snd_ctl_new1(&capture_source_control, tas));
- if (err)
- goto error;
-
- err = aoa_snd_ctl_add(snd_ctl_new1(&drc_range_control, tas));
- if (err)
- goto error;
-
- err = aoa_snd_ctl_add(snd_ctl_new1(&drc_switch_control, tas));
- if (err)
- goto error;
-
- err = aoa_snd_ctl_add(snd_ctl_new1(&treble_control, tas));
- if (err)
- goto error;
-
- err = aoa_snd_ctl_add(snd_ctl_new1(&bass_control, tas));
- if (err)
- goto error;
-
- return 0;
- error:
- tas->codec.soundbus_dev->detach_codec(tas->codec.soundbus_dev, tas);
- snd_device_free(aoa_get_card(), tas);
- return err;
-}
-
-static void tas_exit_codec(struct aoa_codec *codec)
-{
- struct tas *tas = codec_to_tas(codec);
-
- if (!tas->codec.soundbus_dev)
- return;
- tas->codec.soundbus_dev->detach_codec(tas->codec.soundbus_dev, tas);
-}
-
-
-static struct i2c_driver tas_driver;
-
-static int tas_create(struct i2c_adapter *adapter,
- struct device_node *node,
- int addr)
-{
- struct tas *tas;
-
- tas = kzalloc(sizeof(struct tas), GFP_KERNEL);
-
- if (!tas)
- return -ENOMEM;
-
- mutex_init(&tas->mtx);
- tas->i2c.driver = &tas_driver;
- tas->i2c.adapter = adapter;
- tas->i2c.addr = addr;
- /* seems that half is a saner default */
- tas->drc_range = TAS3004_DRC_MAX / 2;
- strlcpy(tas->i2c.name, "tas audio codec", I2C_NAME_SIZE);
-
- if (i2c_attach_client(&tas->i2c)) {
- printk(KERN_ERR PFX "failed to attach to i2c\n");
- goto fail;
- }
-
- strlcpy(tas->codec.name, "tas", MAX_CODEC_NAME_LEN);
- tas->codec.owner = THIS_MODULE;
- tas->codec.init = tas_init_codec;
- tas->codec.exit = tas_exit_codec;
- tas->codec.node = of_node_get(node);
-
- if (aoa_codec_register(&tas->codec)) {
- goto detach;
- }
- printk(KERN_DEBUG
- "snd-aoa-codec-tas: tas found, addr 0x%02x on %s\n",
- addr, node->full_name);
- return 0;
- detach:
- i2c_detach_client(&tas->i2c);
- fail:
- mutex_destroy(&tas->mtx);
- kfree(tas);
- return -EINVAL;
-}
-
-static int tas_i2c_attach(struct i2c_adapter *adapter)
-{
- struct device_node *busnode, *dev = NULL;
- struct pmac_i2c_bus *bus;
-
- bus = pmac_i2c_adapter_to_bus(adapter);
- if (bus == NULL)
- return -ENODEV;
- busnode = pmac_i2c_get_bus_node(bus);
-
- while ((dev = of_get_next_child(busnode, dev)) != NULL) {
- if (of_device_is_compatible(dev, "tas3004")) {
- const u32 *addr;
- printk(KERN_DEBUG PFX "found tas3004\n");
- addr = of_get_property(dev, "reg", NULL);
- if (!addr)
- continue;
- return tas_create(adapter, dev, ((*addr) >> 1) & 0x7f);
- }
- /* older machines have no 'codec' node with a 'compatible'
- * property that says 'tas3004', they just have a 'deq'
- * node without any such property... */
- if (strcmp(dev->name, "deq") == 0) {
- const u32 *_addr;
- u32 addr;
- printk(KERN_DEBUG PFX "found 'deq' node\n");
- _addr = of_get_property(dev, "i2c-address", NULL);
- if (!_addr)
- continue;
- addr = ((*_addr) >> 1) & 0x7f;
- /* now, if the address doesn't match any of the two
- * that a tas3004 can have, we cannot handle this.
- * I doubt it ever happens but hey. */
- if (addr != 0x34 && addr != 0x35)
- continue;
- return tas_create(adapter, dev, addr);
- }
- }
- return -ENODEV;
-}
-
-static int tas_i2c_detach(struct i2c_client *client)
-{
- struct tas *tas = container_of(client, struct tas, i2c);
- int err;
- u8 tmp = TAS_ACR_ANALOG_PDOWN;
-
- if ((err = i2c_detach_client(client)))
- return err;
- aoa_codec_unregister(&tas->codec);
- of_node_put(tas->codec.node);
-
- /* power down codec chip */
- tas_write_reg(tas, TAS_REG_ACR, 1, &tmp);
-
- mutex_destroy(&tas->mtx);
- kfree(tas);
- return 0;
-}
-
-static struct i2c_driver tas_driver = {
- .driver = {
- .name = "aoa_codec_tas",
- .owner = THIS_MODULE,
- },
- .attach_adapter = tas_i2c_attach,
- .detach_client = tas_i2c_detach,
-};
-
-static int __init tas_init(void)
-{
- return i2c_add_driver(&tas_driver);
-}
-
-static void __exit tas_exit(void)
-{
- i2c_del_driver(&tas_driver);
-}
-
-module_init(tas_init);
-module_exit(tas_exit);
git.openpandora.org / pandora-kernel.git / blobdiff