diff options
Diffstat (limited to 'ANDROID_3.4.5/sound/aoa/codecs/tas.c')
| -rw-r--r-- | ANDROID_3.4.5/sound/aoa/codecs/tas.c | 1029 |
1 files changed, 0 insertions, 1029 deletions
diff --git a/ANDROID_3.4.5/sound/aoa/codecs/tas.c b/ANDROID_3.4.5/sound/aoa/codecs/tas.c deleted file mode 100644 index 8e63d1f3..00000000 --- a/ANDROID_3.4.5/sound/aoa/codecs/tas.c +++ /dev/null @@ -1,1029 +0,0 @@ -/* - * 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> -#include <linux/slab.h> - -MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>"); -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("tas codec driver for snd-aoa"); - -#include "tas.h" -#include "tas-gain-table.h" -#include "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 int tas_create(struct i2c_adapter *adapter, - struct device_node *node, - int addr) -{ - struct i2c_board_info info; - struct i2c_client *client; - - memset(&info, 0, sizeof(struct i2c_board_info)); - strlcpy(info.type, "aoa_codec_tas", I2C_NAME_SIZE); - info.addr = addr; - info.platform_data = node; - - client = i2c_new_device(adapter, &info); - if (!client) - return -ENODEV; - /* - * We know the driver is already loaded, so the device should be - * already bound. If not it means binding failed, and then there - * is no point in keeping the device instantiated. - */ - if (!client->driver) { - i2c_unregister_device(client); - return -ENODEV; - } - - /* - * Let i2c-core delete that device on driver removal. - * This is safe because i2c-core holds the core_lock mutex for us. - */ - list_add_tail(&client->detected, &client->driver->clients); - return 0; -} - -static int tas_i2c_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - struct device_node *node = client->dev.platform_data; - struct tas *tas; - - tas = kzalloc(sizeof(struct tas), GFP_KERNEL); - - if (!tas) - return -ENOMEM; - - mutex_init(&tas->mtx); - tas->i2c = client; - i2c_set_clientdata(client, tas); - - /* seems that half is a saner default */ - tas->drc_range = TAS3004_DRC_MAX / 2; - - 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 fail; - } - printk(KERN_DEBUG - "snd-aoa-codec-tas: tas found, addr 0x%02x on %s\n", - (unsigned int)client->addr, node->full_name); - return 0; - 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_remove(struct i2c_client *client) -{ - struct tas *tas = i2c_get_clientdata(client); - u8 tmp = TAS_ACR_ANALOG_PDOWN; - - 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 const struct i2c_device_id tas_i2c_id[] = { - { "aoa_codec_tas", 0 }, - { } -}; - -static struct i2c_driver tas_driver = { - .driver = { - .name = "aoa_codec_tas", - .owner = THIS_MODULE, - }, - .attach_adapter = tas_i2c_attach, - .probe = tas_i2c_probe, - .remove = tas_i2c_remove, - .id_table = tas_i2c_id, -}; - -module_i2c_driver(tas_driver); |