| Date: | 2011-10-03 00:13:25 (12 years 2 months ago) |
|---|---|
| Author: | Maarten ter Huurne |
| Commit: | 144e9c2530f863e32a3538b06c63484401bbe314 |
| Message: | media: radio: RDA5807: Mute at startup; power down when muted. This way the radio does not draw power when it is not in use. |
| Files: |
drivers/media/radio/radio-rda5807.c (5 diffs) |
Change Details
| drivers/media/radio/radio-rda5807.c | ||
|---|---|---|
| 166 | 166 | |
| 167 | 167 | static int rda5807_set_enable(struct rda5807_driver *radio, int enabled) |
| 168 | 168 | { |
| 169 | // TODO: What should control power up/down? | |
| 170 | // Mute would be a candidate. | |
| 171 | 169 | u16 val = enabled ? RDA5807_MASK_CTRL_ENABLE : 0; |
| 170 | dev_info(&radio->i2c_client->dev, "set enabled to %d\n", enabled); | |
| 172 | 171 | return rda5807_update_reg(radio, RDA5807_REG_CTRL, |
| 173 | 172 | RDA5807_MASK_CTRL_ENABLE, val); |
| 174 | 173 | } |
| ... | ... | |
| 176 | 175 | static int rda5807_set_mute(struct rda5807_driver *radio, int muted) |
| 177 | 176 | { |
| 178 | 177 | u16 val = muted ? 0 : RDA5807_MASK_CTRL_DMUTE /* disable mute */; |
| 178 | dev_info(&radio->i2c_client->dev, "set mute to %d\n", muted); | |
| 179 | 179 | return rda5807_update_reg(radio, RDA5807_REG_CTRL, |
| 180 | 180 | RDA5807_MASK_CTRL_DMUTE, val); |
| 181 | 181 | } |
| ... | ... | |
| 237 | 237 | struct rda5807_driver *radio = ctrl_to_radio(ctrl); |
| 238 | 238 | |
| 239 | 239 | switch (ctrl->id) { |
| 240 | case V4L2_CID_AUDIO_MUTE: | |
| 241 | return rda5807_set_mute(radio, ctrl->val); | |
| 240 | case V4L2_CID_AUDIO_MUTE: { | |
| 241 | /* Disable the radio while muted, to save power. | |
| 242 | * TODO: We can't seek while the radio is disabled; | |
| 243 | * is that a problem? | |
| 244 | */ | |
| 245 | int err1 = rda5807_set_enable(radio, !ctrl->val); | |
| 246 | int err2 = rda5807_set_mute(radio, ctrl->val); | |
| 247 | return err1 ? err1 : err2; | |
| 248 | } | |
| 242 | 249 | case V4L2_CID_AUDIO_VOLUME: |
| 243 | 250 | return rda5807_set_volume(radio, ctrl->val); |
| 244 | 251 | case V4L2_CID_TUNE_PREEMPHASIS: |
| ... | ... | |
| 369 | 376 | /* Initialize controls. */ |
| 370 | 377 | v4l2_ctrl_handler_init(&radio->ctrl_handler, 3); |
| 371 | 378 | v4l2_ctrl_new_std(&radio->ctrl_handler, &rda5807_ctrl_ops, |
| 372 | V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0); | |
| 379 | V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1); | |
| 373 | 380 | v4l2_ctrl_new_std(&radio->ctrl_handler, &rda5807_ctrl_ops, |
| 374 | 381 | V4L2_CID_AUDIO_VOLUME, 0, 15, 1, 8); |
| 375 | 382 | v4l2_ctrl_new_std_menu(&radio->ctrl_handler, &rda5807_ctrl_ops, |
| ... | ... | |
| 409 | 416 | " (%d)\n", err); |
| 410 | 417 | goto err_video_unreg; |
| 411 | 418 | } |
| 412 | // TODO: Disable on startup and enable on demand. | |
| 413 | rda5807_set_enable(radio, 1); | |
| 414 | 419 | |
| 415 | 420 | return 0; |
| 416 | 421 | |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9
