diff options
Diffstat (limited to 'drivers/media/video/tda9875.c')
| -rw-r--r-- | drivers/media/video/tda9875.c | 167 |
1 files changed, 112 insertions, 55 deletions
diff --git a/drivers/media/video/tda9875.c b/drivers/media/video/tda9875.c index d11044170872..3c0557130a70 100644 --- a/drivers/media/video/tda9875.c +++ b/drivers/media/video/tda9875.c @@ -7,6 +7,7 @@ * * Copyright (c) 2000 Guillaume Delvit based on Gerd Knorr source and * Eric Sandeen + * Copyright (c) 2006 Mauro Carvalho Chehab <mchehab@infradead.org> * This code is placed under the terms of the GNU General Public License * Based on tda9855.c by Steve VanDeBogart (vandebo@uclink.berkeley.edu) * Which was based on tda8425.c by Greg Alexander (c) 1998 @@ -268,87 +269,143 @@ static int tda9875_detach(struct i2c_client *client) return 0; } -static int tda9875_command(struct i2c_client *client, - unsigned int cmd, void *arg) +static int tda9875_get_ctrl(struct i2c_client *client, + struct v4l2_control *ctrl) { struct tda9875 *t = i2c_get_clientdata(client); - dprintk("In tda9875_command...\n"); + switch (ctrl->id) { + case V4L2_CID_AUDIO_VOLUME: + { + int left = (t->lvol+84)*606; + int right = (t->rvol+84)*606; - switch (cmd) { - /* --- v4l ioctls --- */ - /* take care: bttv does userspace copying, we'll get a - kernel pointer here... */ - case VIDIOCGAUDIO: + ctrl->value=max(left,right); + return 0; + } + case V4L2_CID_AUDIO_BALANCE: { - struct video_audio *va = arg; - int left,right; + int left = (t->lvol+84)*606; + int right = (t->rvol+84)*606; + int volume = max(left,right); + int balance = (32768*min(left,right))/ + (volume ? volume : 1); + ctrl->value=(left<right)? + (65535-balance) : balance; + return 0; + } + case V4L2_CID_AUDIO_BASS: + ctrl->value = (t->bass+12)*2427; /* min -12 max +15 */ + return 0; + case V4L2_CID_AUDIO_TREBLE: + ctrl->value = (t->treble+12)*2730;/* min -12 max +12 */ + return 0; + } + return -EINVAL; +} - dprintk("VIDIOCGAUDIO\n"); +static int tda9875_set_ctrl(struct i2c_client *client, + struct v4l2_control *ctrl) +{ + struct tda9875 *t = i2c_get_clientdata(client); + int chvol=0, volume, balance, left, right; - va->flags |= VIDEO_AUDIO_VOLUME | - VIDEO_AUDIO_BASS | - VIDEO_AUDIO_TREBLE; + switch (ctrl->id) { + case V4L2_CID_AUDIO_VOLUME: + left = (t->lvol+84)*606; + right = (t->rvol+84)*606; + + volume = max(left,right); + balance = (32768*min(left,right))/ + (volume ? volume : 1); + balance =(left<right)? + (65535-balance) : balance; + + volume = ctrl->value; - /* min is -84 max is 24 */ + chvol=1; + break; + case V4L2_CID_AUDIO_BALANCE: left = (t->lvol+84)*606; right = (t->rvol+84)*606; - va->volume=max(left,right); - va->balance=(32768*min(left,right))/ - (va->volume ? va->volume : 1); - va->balance=(left<right)? - (65535-va->balance) : va->balance; - va->bass = (t->bass+12)*2427; /* min -12 max +15 */ - va->treble = (t->treble+12)*2730;/* min -12 max +12 */ - va->mode |= VIDEO_SOUND_MONO; - - break; /* VIDIOCGAUDIO case */ + + volume=max(left,right); + + balance = ctrl->value; + + chvol=1; + break; + case V4L2_CID_AUDIO_BASS: + t->bass = ((ctrl->value/2400)-12) & 0xff; + if (t->bass > 15) + t->bass = 15; + if (t->bass < -12) + t->bass = -12 & 0xff; + break; + case V4L2_CID_AUDIO_TREBLE: + t->treble = ((ctrl->value/2700)-12) & 0xff; + if (t->treble > 12) + t->treble = 12; + if (t->treble < -12) + t->treble = -12 & 0xff; + break; + default: + return -EINVAL; } - case VIDIOCSAUDIO: - { - struct video_audio *va = arg; - int left,right; - - dprintk("VIDEOCSAUDIO...\n"); - left = (min(65536 - va->balance,32768) * - va->volume) / 32768; - right = (min(va->balance,(__u16)32768) * - va->volume) / 32768; + if (chvol) { + left = (min(65536 - balance,32768) * + volume) / 32768; + right = (min(balance,32768) * + volume) / 32768; t->lvol = ((left/606)-84) & 0xff; if (t->lvol > 24) - t->lvol = 24; + t->lvol = 24; if (t->lvol < -84) - t->lvol = -84 & 0xff; + t->lvol = -84 & 0xff; t->rvol = ((right/606)-84) & 0xff; if (t->rvol > 24) - t->rvol = 24; + t->rvol = 24; if (t->rvol < -84) - t->rvol = -84 & 0xff; - - t->bass = ((va->bass/2400)-12) & 0xff; - if (t->bass > 15) - t->bass = 15; - if (t->bass < -12) - t->bass = -12 & 0xff; - - t->treble = ((va->treble/2700)-12) & 0xff; - if (t->treble > 12) - t->treble = 12; - if (t->treble < -12) - t->treble = -12 & 0xff; + t->rvol = -84 & 0xff; + } +//printk("tda9875 bal:%04x vol:%04x bass:%04x treble:%04x\n",va->balance,va->volume,va->bass,va->treble); + tda9875_set(client); -//printk("tda9875 bal:%04x vol:%04x bass:%04x treble:%04x\n",va->balance,va->volume,va->bass,va->treble); + return 0; +} - tda9875_set(client); +static int tda9875_command(struct i2c_client *client, + unsigned int cmd, void *arg) +{ + dprintk("In tda9875_command...\n"); - break; + switch (cmd) { + /* --- v4l ioctls --- */ + /* take care: bttv does userspace copying, we'll get a + kernel pointer here... */ + case VIDIOC_QUERYCTRL: + { + struct v4l2_queryctrl *qc = arg; + + switch (qc->id) { + case V4L2_CID_AUDIO_VOLUME: + case V4L2_CID_AUDIO_BASS: + case V4L2_CID_AUDIO_TREBLE: + default: + return -EINVAL; + } + return v4l2_ctrl_query_fill_std(qc); + } + case VIDIOC_S_CTRL: + return tda9875_set_ctrl(client, arg); - } /* end of VIDEOCSAUDIO case */ + case VIDIOC_G_CTRL: + return tda9875_get_ctrl(client, arg); default: /* Not VIDEOCGAUDIO or VIDEOCSAUDIO */ |