| Date: | 2012-08-25 19:52:49 (11 years 3 months ago) |
|---|---|
| Author: | Marcos Paulo de Souza |
| Commit: | cc31bcc0f9a139c0d51e7ec33e426c819fe3671b |
| Message: | media: radio: RDA5807: Sleep 0.5s after chip enable As suggested by the programming guide, this 0.5s sleep ensures that the chip is ready for the tuning process. Suggested-by: Maarten ter Huurne <maarten@treewalker.org> Signed-off-by: Marcos Paulo de Souza <marcos.souza.org@gmail.com> |
| Files: |
drivers/media/radio/radio-rda5807.c (2 diffs) |
Change Details
| drivers/media/radio/radio-rda5807.c | ||
|---|---|---|
| 33 | 33 | |
| 34 | 34 | #include <asm/byteorder.h> |
| 35 | 35 | #include <linux/bitops.h> |
| 36 | #include <linux/delay.h> | |
| 36 | 37 | #include <linux/module.h> |
| 37 | 38 | #include <linux/i2c.h> |
| 38 | 39 | #include <linux/kernel.h> |
| ... | ... | |
| 177 | 178 | if (err < 0) |
| 178 | 179 | return err; |
| 179 | 180 | /* Tuning is lost when the chip is disabled, so re-tune when enabled. */ |
| 180 | if (enabled) | |
| 181 | return rda5807_update_reg(radio, RDA5807_REG_CHAN, | |
| 181 | if (enabled) { | |
| 182 | err = rda5807_update_reg(radio, RDA5807_REG_CHAN, | |
| 182 | 183 | RDA5807_MASK_CHAN_TUNE, |
| 183 | 184 | RDA5807_MASK_CHAN_TUNE); |
| 184 | else | |
| 185 | return 0; | |
| 185 | ||
| 186 | /* following the rda5807 programming guide, we | |
| 187 | * need to wait for 0.5 seconds before tune */ | |
| 188 | if (!err) | |
| 189 | msleep(500); | |
| 190 | } | |
| 191 | ||
| 192 | return err; | |
| 186 | 193 | } |
| 187 | 194 | |
| 188 | 195 | static int rda5807_set_mute(struct rda5807_driver *radio, int muted) |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
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