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https://github.com/torvalds/linux
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[media] tda7432: convert to the control framework
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil
Mauro Carvalho Chehab
parent
ee70e3d803
commit
5d478e0de8
1 changed files with 120 additions and 176 deletions
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@ -35,6 +35,7 @@
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#include <media/v4l2-device.h>
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#include <media/v4l2-ioctl.h>
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#include <media/v4l2-ctrls.h>
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#include <media/i2c-addr.h>
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#ifndef VIDEO_AUDIO_BALANCE
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@ -60,13 +61,17 @@ MODULE_PARM_DESC(maxvol, "Set maximium volume to +20dB(0) else +0dB(1). Default
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struct tda7432 {
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struct v4l2_subdev sd;
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int addr;
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int input;
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int volume;
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int muted;
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int bass, treble;
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int lf, lr, rf, rr;
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int loud;
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struct v4l2_ctrl_handler hdl;
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struct {
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/* bass/treble cluster */
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struct v4l2_ctrl *bass;
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struct v4l2_ctrl *treble;
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};
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struct {
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/* mute/balance cluster */
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struct v4l2_ctrl *mute;
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struct v4l2_ctrl *balance;
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};
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};
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static inline struct tda7432 *to_state(struct v4l2_subdev *sd)
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@ -74,6 +79,11 @@ static inline struct tda7432 *to_state(struct v4l2_subdev *sd)
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return container_of(sd, struct tda7432, sd);
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}
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static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
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{
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return &container_of(ctrl->handler, struct tda7432, hdl)->sd;
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}
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/* The TDA7432 is made by STS-Thompson
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* http://www.st.com
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* http://us.st.com/stonline/books/pdf/docs/4056.pdf
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@ -227,24 +237,22 @@ static int tda7432_write(struct v4l2_subdev *sd, int subaddr, int val)
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static int tda7432_set(struct v4l2_subdev *sd)
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{
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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struct tda7432 *t = to_state(sd);
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unsigned char buf[16];
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v4l2_dbg(1, debug, sd,
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"tda7432: 7432_set(0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x)\n",
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t->input, t->volume, t->bass, t->treble, t->lf, t->lr,
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t->rf, t->rr, t->loud);
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buf[0] = TDA7432_IN;
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buf[1] = t->input;
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buf[2] = t->volume;
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buf[3] = t->bass;
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buf[4] = t->treble;
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buf[5] = t->lf;
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buf[6] = t->lr;
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buf[7] = t->rf;
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buf[8] = t->rr;
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buf[9] = t->loud;
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if (10 != i2c_master_send(client, buf, 10)) {
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buf[1] = TDA7432_STEREO_IN | /* Main (stereo) input */
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TDA7432_BASS_SYM | /* Symmetric bass cut */
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TDA7432_BASS_NORM; /* Normal bass range */
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buf[2] = 0x3b;
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if (loudness) /* Turn loudness on? */
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buf[2] |= TDA7432_LD_ON;
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buf[3] = TDA7432_TREBLE_0DB | (TDA7432_BASS_0DB << 4);
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buf[4] = TDA7432_ATTEN_0DB;
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buf[5] = TDA7432_ATTEN_0DB;
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buf[6] = TDA7432_ATTEN_0DB;
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buf[7] = TDA7432_ATTEN_0DB;
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buf[8] = loudness;
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if (9 != i2c_master_send(client, buf, 9)) {
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v4l2_err(sd, "I/O error, trying tda7432_set\n");
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return -1;
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}
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@ -252,174 +260,86 @@ static int tda7432_set(struct v4l2_subdev *sd)
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return 0;
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}
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static void do_tda7432_init(struct v4l2_subdev *sd)
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static int tda7432_log_status(struct v4l2_subdev *sd)
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{
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struct tda7432 *t = to_state(sd);
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struct tda7432 *state = to_state(sd);
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v4l2_dbg(2, debug, sd, "In tda7432_init\n");
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t->input = TDA7432_STEREO_IN | /* Main (stereo) input */
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TDA7432_BASS_SYM | /* Symmetric bass cut */
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TDA7432_BASS_NORM; /* Normal bass range */
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t->volume = 0x3b ; /* -27dB Volume */
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if (loudness) /* Turn loudness on? */
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t->volume |= TDA7432_LD_ON;
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t->muted = 1;
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t->treble = TDA7432_TREBLE_0DB; /* 0dB Treble */
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t->bass = TDA7432_BASS_0DB; /* 0dB Bass */
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t->lf = TDA7432_ATTEN_0DB; /* 0dB attenuation */
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t->lr = TDA7432_ATTEN_0DB; /* 0dB attenuation */
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t->rf = TDA7432_ATTEN_0DB; /* 0dB attenuation */
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t->rr = TDA7432_ATTEN_0DB; /* 0dB attenuation */
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t->loud = loudness; /* insmod parameter */
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tda7432_set(sd);
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}
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static int tda7432_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
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{
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struct tda7432 *t = to_state(sd);
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switch (ctrl->id) {
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case V4L2_CID_AUDIO_MUTE:
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ctrl->value=t->muted;
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return 0;
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case V4L2_CID_AUDIO_VOLUME:
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if (!maxvol){ /* max +20db */
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ctrl->value = ( 0x6f - (t->volume & 0x7F) ) * 630;
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} else { /* max 0db */
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ctrl->value = ( 0x6f - (t->volume & 0x7F) ) * 829;
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}
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return 0;
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case V4L2_CID_AUDIO_BALANCE:
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{
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if ( (t->lf) < (t->rf) )
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/* right is attenuated, balance shifted left */
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ctrl->value = (32768 - 1057*(t->rf));
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else
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/* left is attenuated, balance shifted right */
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ctrl->value = (32768 + 1057*(t->lf));
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return 0;
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}
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case V4L2_CID_AUDIO_BASS:
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{
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/* Bass/treble 4 bits each */
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int bass=t->bass;
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if(bass >= 0x8)
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bass = ~(bass - 0x8) & 0xf;
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ctrl->value = (bass << 12)+(bass << 8)+(bass << 4)+(bass);
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return 0;
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}
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case V4L2_CID_AUDIO_TREBLE:
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{
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int treble=t->treble;
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if(treble >= 0x8)
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treble = ~(treble - 0x8) & 0xf;
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ctrl->value = (treble << 12)+(treble << 8)+(treble << 4)+(treble);
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return 0;
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}
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}
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return -EINVAL;
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}
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static int tda7432_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
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{
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struct tda7432 *t = to_state(sd);
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switch (ctrl->id) {
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case V4L2_CID_AUDIO_MUTE:
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t->muted=ctrl->value;
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break;
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case V4L2_CID_AUDIO_VOLUME:
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if(!maxvol){ /* max +20db */
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t->volume = 0x6f - ((ctrl->value)/630);
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} else { /* max 0db */
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t->volume = 0x6f - ((ctrl->value)/829);
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}
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if (loudness) /* Turn on the loudness bit */
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t->volume |= TDA7432_LD_ON;
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tda7432_write(sd, TDA7432_VL, t->volume);
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return 0;
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case V4L2_CID_AUDIO_BALANCE:
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if (ctrl->value < 32768) {
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/* shifted to left, attenuate right */
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t->rr = (32768 - ctrl->value)/1057;
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t->rf = t->rr;
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t->lr = TDA7432_ATTEN_0DB;
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t->lf = TDA7432_ATTEN_0DB;
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} else if(ctrl->value > 32769) {
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/* shifted to right, attenuate left */
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t->lf = (ctrl->value - 32768)/1057;
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t->lr = t->lf;
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t->rr = TDA7432_ATTEN_0DB;
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t->rf = TDA7432_ATTEN_0DB;
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} else {
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/* centered */
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t->rr = TDA7432_ATTEN_0DB;
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t->rf = TDA7432_ATTEN_0DB;
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t->lf = TDA7432_ATTEN_0DB;
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t->lr = TDA7432_ATTEN_0DB;
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}
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break;
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case V4L2_CID_AUDIO_BASS:
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t->bass = ctrl->value >> 12;
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if(t->bass>= 0x8)
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t->bass = (~t->bass & 0xf) + 0x8 ;
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tda7432_write(sd, TDA7432_TN, 0x10 | (t->bass << 4) | t->treble);
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return 0;
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case V4L2_CID_AUDIO_TREBLE:
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t->treble= ctrl->value >> 12;
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if(t->treble>= 0x8)
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t->treble = (~t->treble & 0xf) + 0x8 ;
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tda7432_write(sd, TDA7432_TN, 0x10 | (t->bass << 4) | t->treble);
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return 0;
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default:
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return -EINVAL;
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}
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/* Used for both mute and balance changes */
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if (t->muted)
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{
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/* Mute & update balance*/
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tda7432_write(sd, TDA7432_LF, t->lf | TDA7432_MUTE);
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tda7432_write(sd, TDA7432_LR, t->lr | TDA7432_MUTE);
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tda7432_write(sd, TDA7432_RF, t->rf | TDA7432_MUTE);
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tda7432_write(sd, TDA7432_RR, t->rr | TDA7432_MUTE);
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} else {
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tda7432_write(sd, TDA7432_LF, t->lf);
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tda7432_write(sd, TDA7432_LR, t->lr);
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tda7432_write(sd, TDA7432_RF, t->rf);
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tda7432_write(sd, TDA7432_RR, t->rr);
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}
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v4l2_ctrl_handler_log_status(&state->hdl, sd->name);
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return 0;
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}
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static int tda7432_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
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static int tda7432_s_ctrl(struct v4l2_ctrl *ctrl)
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{
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switch (qc->id) {
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case V4L2_CID_AUDIO_VOLUME:
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return v4l2_ctrl_query_fill(qc, 0, 65535, 65535 / 100, 58880);
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struct v4l2_subdev *sd = to_sd(ctrl);
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struct tda7432 *t = to_state(sd);
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u8 bass, treble, volume;
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u8 lf, lr, rf, rr;
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switch (ctrl->id) {
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case V4L2_CID_AUDIO_MUTE:
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return v4l2_ctrl_query_fill(qc, 0, 1, 1, 0);
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case V4L2_CID_AUDIO_BALANCE:
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if (t->balance->val < 0) {
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/* shifted to left, attenuate right */
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rr = rf = -t->balance->val;
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lr = lf = TDA7432_ATTEN_0DB;
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} else if (t->balance->val > 0) {
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/* shifted to right, attenuate left */
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rr = rf = TDA7432_ATTEN_0DB;
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lr = lf = t->balance->val;
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} else {
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/* centered */
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rr = rf = TDA7432_ATTEN_0DB;
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lr = lf = TDA7432_ATTEN_0DB;
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}
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if (t->mute->val) {
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lf |= TDA7432_MUTE;
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lr |= TDA7432_MUTE;
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lf |= TDA7432_MUTE;
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rr |= TDA7432_MUTE;
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}
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/* Mute & update balance*/
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tda7432_write(sd, TDA7432_LF, lf);
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tda7432_write(sd, TDA7432_LR, lr);
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tda7432_write(sd, TDA7432_RF, rf);
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tda7432_write(sd, TDA7432_RR, rr);
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return 0;
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case V4L2_CID_AUDIO_VOLUME:
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volume = 0x6f - ctrl->val;
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if (loudness) /* Turn on the loudness bit */
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volume |= TDA7432_LD_ON;
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tda7432_write(sd, TDA7432_VL, volume);
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return 0;
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case V4L2_CID_AUDIO_BASS:
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case V4L2_CID_AUDIO_TREBLE:
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return v4l2_ctrl_query_fill(qc, 0, 65535, 65535 / 100, 32768);
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bass = t->bass->val;
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treble = t->treble->val;
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if (bass >= 0x8)
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bass = 14 - (bass - 8);
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if (treble >= 0x8)
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treble = 14 - (treble - 8);
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tda7432_write(sd, TDA7432_TN, 0x10 | (bass << 4) | treble);
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return 0;
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}
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return -EINVAL;
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}
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/* ----------------------------------------------------------------------- */
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static const struct v4l2_subdev_core_ops tda7432_core_ops = {
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.queryctrl = tda7432_queryctrl,
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.g_ctrl = tda7432_g_ctrl,
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static const struct v4l2_ctrl_ops tda7432_ctrl_ops = {
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.s_ctrl = tda7432_s_ctrl,
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};
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static const struct v4l2_subdev_core_ops tda7432_core_ops = {
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.log_status = tda7432_log_status,
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.g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
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.try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
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.s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
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.g_ctrl = v4l2_subdev_g_ctrl,
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.s_ctrl = v4l2_subdev_s_ctrl,
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.queryctrl = v4l2_subdev_queryctrl,
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.querymenu = v4l2_subdev_querymenu,
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};
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static const struct v4l2_subdev_ops tda7432_ops = {
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.core = &tda7432_core_ops,
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};
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@ -444,6 +364,28 @@ static int tda7432_probe(struct i2c_client *client,
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return -ENOMEM;
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sd = &t->sd;
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v4l2_i2c_subdev_init(sd, client, &tda7432_ops);
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v4l2_ctrl_handler_init(&t->hdl, 5);
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v4l2_ctrl_new_std(&t->hdl, &tda7432_ctrl_ops,
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V4L2_CID_AUDIO_VOLUME, 0, maxvol ? 0x68 : 0x4f, 1, maxvol ? 0x5d : 0x47);
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t->mute = v4l2_ctrl_new_std(&t->hdl, &tda7432_ctrl_ops,
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V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
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t->balance = v4l2_ctrl_new_std(&t->hdl, &tda7432_ctrl_ops,
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V4L2_CID_AUDIO_BALANCE, -31, 31, 1, 0);
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t->bass = v4l2_ctrl_new_std(&t->hdl, &tda7432_ctrl_ops,
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V4L2_CID_AUDIO_BASS, 0, 14, 1, 7);
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t->treble = v4l2_ctrl_new_std(&t->hdl, &tda7432_ctrl_ops,
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V4L2_CID_AUDIO_TREBLE, 0, 14, 1, 7);
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sd->ctrl_handler = &t->hdl;
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if (t->hdl.error) {
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int err = t->hdl.error;
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v4l2_ctrl_handler_free(&t->hdl);
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kfree(t);
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return err;
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}
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v4l2_ctrl_cluster(2, &t->bass);
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v4l2_ctrl_cluster(2, &t->mute);
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v4l2_ctrl_handler_setup(&t->hdl);
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if (loudness < 0 || loudness > 15) {
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v4l2_warn(sd, "loudness parameter must be between 0 and 15\n");
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if (loudness < 0)
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@ -452,17 +394,19 @@ static int tda7432_probe(struct i2c_client *client,
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loudness = 15;
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}
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do_tda7432_init(sd);
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tda7432_set(sd);
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return 0;
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}
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static int tda7432_remove(struct i2c_client *client)
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{
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struct v4l2_subdev *sd = i2c_get_clientdata(client);
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struct tda7432 *t = to_state(sd);
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do_tda7432_init(sd);
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tda7432_set(sd);
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v4l2_device_unregister_subdev(sd);
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kfree(to_state(sd));
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v4l2_ctrl_handler_free(&t->hdl);
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kfree(t);
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return 0;
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}
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