diff options
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/i2c/tvaudio.c | 65 |
1 files changed, 27 insertions, 38 deletions
diff --git a/drivers/media/i2c/tvaudio.c b/drivers/media/i2c/tvaudio.c index 3b24d3fc1866..d5cd2eb95558 100644 --- a/drivers/media/i2c/tvaudio.c +++ b/drivers/media/i2c/tvaudio.c @@ -93,8 +93,8 @@ struct CHIPDESC { /* which register has which value */ int leftreg,rightreg,treblereg,bassreg; - /* initialize with (defaults to 65535/65535/32768/32768 */ - int leftinit,rightinit,trebleinit,bassinit; + /* initialize with (defaults to 65535/32768/32768 */ + int volinit, trebleinit, bassinit; /* functions to convert the values (v4l -> chip) */ getvalue volfunc,treblefunc,bassfunc; @@ -122,7 +122,7 @@ struct CHIPSTATE { audiocmd shadow; /* current settings */ - __u16 left, right, treble, bass, muted; + u16 volume, balance, treble, bass, muted; int prevmode; int radio; int input; @@ -1523,8 +1523,7 @@ static struct CHIPDESC chiplist[] = { .rightreg = TDA9875_MVR, .bassreg = TDA9875_MBA, .treblereg = TDA9875_MTR, - .leftinit = 58880, - .rightinit = 58880, + .volinit = 58880, }, { .name = "tda9850", @@ -1694,20 +1693,13 @@ static int tvaudio_g_ctrl(struct v4l2_subdev *sd, case V4L2_CID_AUDIO_VOLUME: if (!(desc->flags & CHIP_HAS_VOLUME)) break; - ctrl->value = max(chip->left,chip->right); + ctrl->value = chip->volume; return 0; case V4L2_CID_AUDIO_BALANCE: - { - int volume; if (!(desc->flags & CHIP_HAS_VOLUME)) break; - volume = max(chip->left,chip->right); - if (volume) - ctrl->value=(32768*min(chip->left,chip->right))/volume; - else - ctrl->value=32768; + ctrl->value = chip->balance; return 0; - } case V4L2_CID_AUDIO_BASS: if (!(desc->flags & CHIP_HAS_BASSTREBLE)) break; @@ -1744,41 +1736,38 @@ static int tvaudio_s_ctrl(struct v4l2_subdev *sd, return 0; case V4L2_CID_AUDIO_VOLUME: { - int volume,balance; + u32 volume, balance; + u32 left, right; if (!(desc->flags & CHIP_HAS_VOLUME)) break; - volume = max(chip->left,chip->right); - if (volume) - balance=(32768*min(chip->left,chip->right))/volume; - else - balance=32768; - - volume=ctrl->value; - chip->left = (min(65536 - balance,32768) * volume) / 32768; - chip->right = (min(balance,volume *(__u16)32768)) / 32768; - - chip_write(chip,desc->leftreg,desc->volfunc(chip->left)); - chip_write(chip,desc->rightreg,desc->volfunc(chip->right)); + volume = ctrl->value; + chip->volume = volume; + balance = chip->balance; + left = (min(65536U - balance, 32768U) * volume) / 32768U; + right = (min(balance, 32768U) * volume) / 32768U; + chip_write(chip, desc->leftreg, desc->volfunc(left)); + chip_write(chip, desc->rightreg, desc->volfunc(right)); return 0; } case V4L2_CID_AUDIO_BALANCE: { - int volume, balance; + u32 volume, balance; + u32 left, right; if (!(desc->flags & CHIP_HAS_VOLUME)) break; - volume = max(chip->left, chip->right); balance = ctrl->value; - chip->left = (min(65536 - balance, 32768) * volume) / 32768; - chip->right = (min(balance, volume * (__u16)32768)) / 32768; - - chip_write(chip, desc->leftreg, desc->volfunc(chip->left)); - chip_write(chip, desc->rightreg, desc->volfunc(chip->right)); + chip->balance = balance; + volume = chip->volume; + left = (min(65536U - balance, 32768U) * volume) / 32768U; + right = (min(balance, 32768U) * volume) / 32768U; + chip_write(chip, desc->leftreg, desc->volfunc(left)); + chip_write(chip, desc->rightreg, desc->volfunc(right)); return 0; } case V4L2_CID_AUDIO_BASS: @@ -2043,12 +2032,12 @@ static int tvaudio_probe(struct i2c_client *client, const struct i2c_device_id * v4l2_info(sd, "volume callback undefined!\n"); desc->flags &= ~CHIP_HAS_VOLUME; } else { - chip->left = desc->leftinit ? desc->leftinit : 65535; - chip->right = desc->rightinit ? desc->rightinit : 65535; + chip->volume = desc->volinit ? desc->volinit : 65535; + chip->balance = 32768; chip_write(chip, desc->leftreg, - desc->volfunc(chip->left)); + desc->volfunc(chip->volume)); chip_write(chip, desc->rightreg, - desc->volfunc(chip->right)); + desc->volfunc(chip->volume)); } } if (desc->flags & CHIP_HAS_BASSTREBLE) { |