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946 lines
24 KiB
946 lines
24 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Apple Onboard Audio driver for tas codec |
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* |
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* Copyright 2006 Johannes Berg <[email protected]> |
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* |
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* Open questions: |
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* - How to distinguish between 3004 and versions? |
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* |
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* FIXMEs: |
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* - This codec driver doesn't honour the 'connected' |
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* property of the aoa_codec struct, hence if |
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* it is used in machines where not everything is |
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* connected it will display wrong mixer elements. |
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* - Driver assumes that the microphone is always |
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* monaureal and connected to the right channel of |
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* the input. This should also be a codec-dependent |
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* flag, maybe the codec should have 3 different |
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* bits for the three different possibilities how |
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* it can be hooked up... |
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* But as long as I don't see any hardware hooked |
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* up that way... |
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* - As Apple notes in their code, the tas3004 seems |
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* to delay the right channel by one sample. You can |
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* see this when for example recording stereo in |
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* audacity, or recording the tas output via cable |
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* on another machine (use a sinus generator or so). |
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* I tried programming the BiQuads but couldn't |
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* make the delay work, maybe someone can read the |
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* datasheet and fix it. The relevant Apple comment |
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* is in AppleTAS3004Audio.cpp lines 1637 ff. Note |
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* that their comment describing how they program |
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* the filters sucks... |
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* |
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* Other things: |
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* - this should actually register *two* aoa_codec |
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* structs since it has two inputs. Then it must |
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* use the prepare callback to forbid running the |
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* secondary output on a different clock. |
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* Also, whatever bus knows how to do this must |
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* provide two soundbus_dev devices and the fabric |
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* must be able to link them correctly. |
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* |
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* I don't even know if Apple ever uses the second |
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* port on the tas3004 though, I don't think their |
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* i2s controllers can even do it. OTOH, they all |
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* derive the clocks from common clocks, so it |
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* might just be possible. The framework allows the |
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* codec to refine the transfer_info items in the |
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* usable callback, so we can simply remove the |
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* rates the second instance is not using when it |
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* actually is in use. |
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* Maybe we'll need to make the sound busses have |
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* a 'clock group id' value so the codec can |
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* determine if the two outputs can be driven at |
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* the same time. But that is likely overkill, up |
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* to the fabric to not link them up incorrectly, |
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* and up to the hardware designer to not wire |
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* them up in some weird unusable way. |
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*/ |
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#include <linux/i2c.h> |
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#include <asm/pmac_low_i2c.h> |
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#include <asm/prom.h> |
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#include <linux/delay.h> |
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#include <linux/module.h> |
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#include <linux/mutex.h> |
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#include <linux/slab.h> |
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|
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MODULE_AUTHOR("Johannes Berg <[email protected]>"); |
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MODULE_LICENSE("GPL"); |
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MODULE_DESCRIPTION("tas codec driver for snd-aoa"); |
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|
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#include "tas.h" |
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#include "tas-gain-table.h" |
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#include "tas-basstreble.h" |
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#include "../aoa.h" |
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#include "../soundbus/soundbus.h" |
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|
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#define PFX "snd-aoa-codec-tas: " |
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struct tas { |
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struct aoa_codec codec; |
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struct i2c_client *i2c; |
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u32 mute_l:1, mute_r:1 , |
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controls_created:1 , |
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drc_enabled:1, |
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hw_enabled:1; |
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u8 cached_volume_l, cached_volume_r; |
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u8 mixer_l[3], mixer_r[3]; |
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u8 bass, treble; |
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u8 acr; |
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int drc_range; |
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/* protects hardware access against concurrency from |
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* userspace when hitting controls and during |
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* codec init/suspend/resume */ |
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struct mutex mtx; |
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}; |
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|
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static int tas_reset_init(struct tas *tas); |
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|
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static struct tas *codec_to_tas(struct aoa_codec *codec) |
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{ |
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return container_of(codec, struct tas, codec); |
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} |
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|
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static inline int tas_write_reg(struct tas *tas, u8 reg, u8 len, u8 *data) |
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{ |
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if (len == 1) |
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return i2c_smbus_write_byte_data(tas->i2c, reg, *data); |
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else |
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return i2c_smbus_write_i2c_block_data(tas->i2c, reg, len, data); |
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} |
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|
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static void tas3004_set_drc(struct tas *tas) |
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{ |
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unsigned char val[6]; |
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|
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if (tas->drc_enabled) |
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val[0] = 0x50; /* 3:1 above threshold */ |
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else |
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val[0] = 0x51; /* disabled */ |
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val[1] = 0x02; /* 1:1 below threshold */ |
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if (tas->drc_range > 0xef) |
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val[2] = 0xef; |
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else if (tas->drc_range < 0) |
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val[2] = 0x00; |
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else |
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val[2] = tas->drc_range; |
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val[3] = 0xb0; |
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val[4] = 0x60; |
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val[5] = 0xa0; |
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tas_write_reg(tas, TAS_REG_DRC, 6, val); |
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} |
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static void tas_set_treble(struct tas *tas) |
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{ |
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u8 tmp; |
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|
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tmp = tas3004_treble(tas->treble); |
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tas_write_reg(tas, TAS_REG_TREBLE, 1, &tmp); |
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} |
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static void tas_set_bass(struct tas *tas) |
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{ |
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u8 tmp; |
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|
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tmp = tas3004_bass(tas->bass); |
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tas_write_reg(tas, TAS_REG_BASS, 1, &tmp); |
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} |
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static void tas_set_volume(struct tas *tas) |
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{ |
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u8 block[6]; |
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int tmp; |
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u8 left, right; |
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left = tas->cached_volume_l; |
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right = tas->cached_volume_r; |
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if (left > 177) left = 177; |
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if (right > 177) right = 177; |
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if (tas->mute_l) left = 0; |
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if (tas->mute_r) right = 0; |
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|
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/* analysing the volume and mixer tables shows |
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* that they are similar enough when we shift |
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* the mixer table down by 4 bits. The error |
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* is miniscule, in just one item the error |
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* is 1, at a value of 0x07f17b (mixer table |
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* value is 0x07f17a) */ |
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tmp = tas_gaintable[left]; |
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block[0] = tmp>>20; |
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block[1] = tmp>>12; |
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block[2] = tmp>>4; |
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tmp = tas_gaintable[right]; |
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block[3] = tmp>>20; |
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block[4] = tmp>>12; |
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block[5] = tmp>>4; |
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tas_write_reg(tas, TAS_REG_VOL, 6, block); |
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} |
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static void tas_set_mixer(struct tas *tas) |
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{ |
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u8 block[9]; |
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int tmp, i; |
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u8 val; |
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for (i=0;i<3;i++) { |
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val = tas->mixer_l[i]; |
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if (val > 177) val = 177; |
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tmp = tas_gaintable[val]; |
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block[3*i+0] = tmp>>16; |
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block[3*i+1] = tmp>>8; |
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block[3*i+2] = tmp; |
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} |
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tas_write_reg(tas, TAS_REG_LMIX, 9, block); |
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for (i=0;i<3;i++) { |
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val = tas->mixer_r[i]; |
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if (val > 177) val = 177; |
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tmp = tas_gaintable[val]; |
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block[3*i+0] = tmp>>16; |
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block[3*i+1] = tmp>>8; |
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block[3*i+2] = tmp; |
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} |
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tas_write_reg(tas, TAS_REG_RMIX, 9, block); |
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} |
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|
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/* alsa stuff */ |
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static int tas_dev_register(struct snd_device *dev) |
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{ |
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return 0; |
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} |
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static const struct snd_device_ops ops = { |
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.dev_register = tas_dev_register, |
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}; |
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static int tas_snd_vol_info(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_info *uinfo) |
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{ |
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uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
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uinfo->count = 2; |
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uinfo->value.integer.min = 0; |
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uinfo->value.integer.max = 177; |
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return 0; |
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} |
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static int tas_snd_vol_get(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_value *ucontrol) |
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{ |
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struct tas *tas = snd_kcontrol_chip(kcontrol); |
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mutex_lock(&tas->mtx); |
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ucontrol->value.integer.value[0] = tas->cached_volume_l; |
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ucontrol->value.integer.value[1] = tas->cached_volume_r; |
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mutex_unlock(&tas->mtx); |
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return 0; |
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} |
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static int tas_snd_vol_put(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_value *ucontrol) |
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{ |
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struct tas *tas = snd_kcontrol_chip(kcontrol); |
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if (ucontrol->value.integer.value[0] < 0 || |
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ucontrol->value.integer.value[0] > 177) |
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return -EINVAL; |
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if (ucontrol->value.integer.value[1] < 0 || |
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ucontrol->value.integer.value[1] > 177) |
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return -EINVAL; |
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mutex_lock(&tas->mtx); |
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if (tas->cached_volume_l == ucontrol->value.integer.value[0] |
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&& tas->cached_volume_r == ucontrol->value.integer.value[1]) { |
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mutex_unlock(&tas->mtx); |
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return 0; |
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} |
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tas->cached_volume_l = ucontrol->value.integer.value[0]; |
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tas->cached_volume_r = ucontrol->value.integer.value[1]; |
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if (tas->hw_enabled) |
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tas_set_volume(tas); |
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mutex_unlock(&tas->mtx); |
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return 1; |
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} |
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static const struct snd_kcontrol_new volume_control = { |
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.iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
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.name = "Master Playback Volume", |
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.access = SNDRV_CTL_ELEM_ACCESS_READWRITE, |
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.info = tas_snd_vol_info, |
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.get = tas_snd_vol_get, |
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.put = tas_snd_vol_put, |
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}; |
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#define tas_snd_mute_info snd_ctl_boolean_stereo_info |
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static int tas_snd_mute_get(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_value *ucontrol) |
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{ |
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struct tas *tas = snd_kcontrol_chip(kcontrol); |
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mutex_lock(&tas->mtx); |
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ucontrol->value.integer.value[0] = !tas->mute_l; |
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ucontrol->value.integer.value[1] = !tas->mute_r; |
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mutex_unlock(&tas->mtx); |
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return 0; |
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} |
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static int tas_snd_mute_put(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_value *ucontrol) |
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{ |
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struct tas *tas = snd_kcontrol_chip(kcontrol); |
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mutex_lock(&tas->mtx); |
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if (tas->mute_l == !ucontrol->value.integer.value[0] |
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&& tas->mute_r == !ucontrol->value.integer.value[1]) { |
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mutex_unlock(&tas->mtx); |
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return 0; |
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} |
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tas->mute_l = !ucontrol->value.integer.value[0]; |
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tas->mute_r = !ucontrol->value.integer.value[1]; |
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if (tas->hw_enabled) |
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tas_set_volume(tas); |
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mutex_unlock(&tas->mtx); |
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return 1; |
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} |
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static const struct snd_kcontrol_new mute_control = { |
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.iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
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.name = "Master Playback Switch", |
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.access = SNDRV_CTL_ELEM_ACCESS_READWRITE, |
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.info = tas_snd_mute_info, |
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.get = tas_snd_mute_get, |
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.put = tas_snd_mute_put, |
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}; |
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static int tas_snd_mixer_info(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_info *uinfo) |
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{ |
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uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
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uinfo->count = 2; |
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uinfo->value.integer.min = 0; |
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uinfo->value.integer.max = 177; |
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return 0; |
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} |
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static int tas_snd_mixer_get(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_value *ucontrol) |
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{ |
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struct tas *tas = snd_kcontrol_chip(kcontrol); |
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int idx = kcontrol->private_value; |
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mutex_lock(&tas->mtx); |
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ucontrol->value.integer.value[0] = tas->mixer_l[idx]; |
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ucontrol->value.integer.value[1] = tas->mixer_r[idx]; |
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mutex_unlock(&tas->mtx); |
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return 0; |
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} |
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static int tas_snd_mixer_put(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_value *ucontrol) |
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{ |
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struct tas *tas = snd_kcontrol_chip(kcontrol); |
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int idx = kcontrol->private_value; |
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mutex_lock(&tas->mtx); |
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if (tas->mixer_l[idx] == ucontrol->value.integer.value[0] |
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&& tas->mixer_r[idx] == ucontrol->value.integer.value[1]) { |
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mutex_unlock(&tas->mtx); |
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return 0; |
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} |
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tas->mixer_l[idx] = ucontrol->value.integer.value[0]; |
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tas->mixer_r[idx] = ucontrol->value.integer.value[1]; |
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if (tas->hw_enabled) |
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tas_set_mixer(tas); |
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mutex_unlock(&tas->mtx); |
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return 1; |
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} |
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#define MIXER_CONTROL(n,descr,idx) \ |
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static const struct snd_kcontrol_new n##_control = { \ |
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.iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ |
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.name = descr " Playback Volume", \ |
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.access = SNDRV_CTL_ELEM_ACCESS_READWRITE, \ |
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.info = tas_snd_mixer_info, \ |
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.get = tas_snd_mixer_get, \ |
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.put = tas_snd_mixer_put, \ |
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.private_value = idx, \ |
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} |
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MIXER_CONTROL(pcm1, "PCM", 0); |
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MIXER_CONTROL(monitor, "Monitor", 2); |
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static int tas_snd_drc_range_info(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_info *uinfo) |
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{ |
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uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
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uinfo->count = 1; |
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uinfo->value.integer.min = 0; |
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uinfo->value.integer.max = TAS3004_DRC_MAX; |
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return 0; |
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} |
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|
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static int tas_snd_drc_range_get(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_value *ucontrol) |
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{ |
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struct tas *tas = snd_kcontrol_chip(kcontrol); |
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|
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mutex_lock(&tas->mtx); |
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ucontrol->value.integer.value[0] = tas->drc_range; |
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mutex_unlock(&tas->mtx); |
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return 0; |
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} |
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static int tas_snd_drc_range_put(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_value *ucontrol) |
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{ |
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struct tas *tas = snd_kcontrol_chip(kcontrol); |
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|
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if (ucontrol->value.integer.value[0] < 0 || |
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ucontrol->value.integer.value[0] > TAS3004_DRC_MAX) |
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return -EINVAL; |
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|
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mutex_lock(&tas->mtx); |
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if (tas->drc_range == ucontrol->value.integer.value[0]) { |
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mutex_unlock(&tas->mtx); |
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return 0; |
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} |
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|
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tas->drc_range = ucontrol->value.integer.value[0]; |
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if (tas->hw_enabled) |
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tas3004_set_drc(tas); |
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mutex_unlock(&tas->mtx); |
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return 1; |
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} |
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|
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static const struct snd_kcontrol_new drc_range_control = { |
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.iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
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.name = "DRC Range", |
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.access = SNDRV_CTL_ELEM_ACCESS_READWRITE, |
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.info = tas_snd_drc_range_info, |
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.get = tas_snd_drc_range_get, |
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.put = tas_snd_drc_range_put, |
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}; |
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|
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#define tas_snd_drc_switch_info snd_ctl_boolean_mono_info |
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|
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static int tas_snd_drc_switch_get(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_value *ucontrol) |
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{ |
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struct tas *tas = snd_kcontrol_chip(kcontrol); |
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|
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mutex_lock(&tas->mtx); |
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ucontrol->value.integer.value[0] = tas->drc_enabled; |
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mutex_unlock(&tas->mtx); |
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return 0; |
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} |
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|
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static int tas_snd_drc_switch_put(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_value *ucontrol) |
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{ |
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struct tas *tas = snd_kcontrol_chip(kcontrol); |
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|
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mutex_lock(&tas->mtx); |
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if (tas->drc_enabled == ucontrol->value.integer.value[0]) { |
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mutex_unlock(&tas->mtx); |
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return 0; |
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} |
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|
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tas->drc_enabled = !!ucontrol->value.integer.value[0]; |
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if (tas->hw_enabled) |
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tas3004_set_drc(tas); |
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mutex_unlock(&tas->mtx); |
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return 1; |
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} |
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|
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static const struct snd_kcontrol_new drc_switch_control = { |
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.iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
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.name = "DRC Range Switch", |
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.access = SNDRV_CTL_ELEM_ACCESS_READWRITE, |
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.info = tas_snd_drc_switch_info, |
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.get = tas_snd_drc_switch_get, |
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.put = tas_snd_drc_switch_put, |
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}; |
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|
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static int tas_snd_capture_source_info(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_info *uinfo) |
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{ |
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static const char * const texts[] = { "Line-In", "Microphone" }; |
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|
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return snd_ctl_enum_info(uinfo, 1, 2, texts); |
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} |
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|
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static int tas_snd_capture_source_get(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_value *ucontrol) |
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{ |
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struct tas *tas = snd_kcontrol_chip(kcontrol); |
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|
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mutex_lock(&tas->mtx); |
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ucontrol->value.enumerated.item[0] = !!(tas->acr & TAS_ACR_INPUT_B); |
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mutex_unlock(&tas->mtx); |
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return 0; |
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} |
|
|
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static int tas_snd_capture_source_put(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_value *ucontrol) |
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{ |
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struct tas *tas = snd_kcontrol_chip(kcontrol); |
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int oldacr; |
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|
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if (ucontrol->value.enumerated.item[0] > 1) |
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return -EINVAL; |
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mutex_lock(&tas->mtx); |
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oldacr = tas->acr; |
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|
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/* |
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* Despite what the data sheet says in one place, the |
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* TAS_ACR_B_MONAUREAL bit forces mono output even when |
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* input A (line in) is selected. |
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*/ |
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tas->acr &= ~(TAS_ACR_INPUT_B | TAS_ACR_B_MONAUREAL); |
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if (ucontrol->value.enumerated.item[0]) |
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tas->acr |= TAS_ACR_INPUT_B | TAS_ACR_B_MONAUREAL | |
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TAS_ACR_B_MON_SEL_RIGHT; |
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if (oldacr == tas->acr) { |
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mutex_unlock(&tas->mtx); |
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return 0; |
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} |
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if (tas->hw_enabled) |
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tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr); |
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mutex_unlock(&tas->mtx); |
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return 1; |
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} |
|
|
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static const struct snd_kcontrol_new capture_source_control = { |
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.iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
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/* If we name this 'Input Source', it properly shows up in |
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* alsamixer as a selection, * but it's shown under the |
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* 'Playback' category. |
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* If I name it 'Capture Source', it shows up in strange |
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* 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 const 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 const 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_CODEC, 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_i2c_probe(struct i2c_client *client, |
|
const struct i2c_device_id *id) |
|
{ |
|
struct device_node *node = client->dev.of_node; |
|
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; |
|
|
|
strscpy(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 %pOF\n", |
|
(unsigned int)client->addr, node); |
|
return 0; |
|
fail: |
|
mutex_destroy(&tas->mtx); |
|
kfree(tas); |
|
return -EINVAL; |
|
} |
|
|
|
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[] = { |
|
{ "MAC,tas3004", 0 }, |
|
{ } |
|
}; |
|
MODULE_DEVICE_TABLE(i2c,tas_i2c_id); |
|
|
|
static struct i2c_driver tas_driver = { |
|
.driver = { |
|
.name = "aoa_codec_tas", |
|
}, |
|
.probe = tas_i2c_probe, |
|
.remove = tas_i2c_remove, |
|
.id_table = tas_i2c_id, |
|
}; |
|
|
|
module_i2c_driver(tas_driver);
|
|
|