diff options
| author | Mark A. Greer <mgreer@animalcreek.com> | 2014-09-02 15:12:23 -0700 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2014-09-07 23:13:43 +0200 |
| commit | a08e54549e743ea3704da939f92caf3eaa8471d3 (patch) | |
| tree | 519f1465b5ae0711bcd3e6056c172a145afe6f51 /drivers/nfc | |
| parent | 6c08df422ede7db94776b8099a5f43597629234c (diff) | |
NFC: trf7970a: Initialize when enabling RF
Currently, the trf7970a is reset & initialized only
when the pm_runtime resume hook is called. Instead,
initialize it every time the RF is enabled to ensure
that the trf7970a is quiesced and in a known state
before being set up for another RF technology.
Signed-off-by: Mark A. Greer <mgreer@animalcreek.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/nfc')
| -rw-r--r-- | drivers/nfc/trf7970a.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/nfc/trf7970a.c b/drivers/nfc/trf7970a.c index 9c0549d4f276..ce9686c44350 100644 --- a/drivers/nfc/trf7970a.c +++ b/drivers/nfc/trf7970a.c @@ -823,10 +823,18 @@ static void trf7970a_switch_rf_off(struct trf7970a *trf) static void trf7970a_switch_rf_on(struct trf7970a *trf) { + int ret; + dev_dbg(trf->dev, "Switching rf on\n"); pm_runtime_get_sync(trf->dev); + ret = trf7970a_init(trf); + if (ret) { + dev_err(trf->dev, "%s - Can't initialize: %d\n", __func__, ret); + return; + } + trf->state = TRF7970A_ST_IDLE; } @@ -1473,12 +1481,6 @@ static int trf7970a_pm_runtime_resume(struct device *dev) usleep_range(20000, 21000); - ret = trf7970a_init(trf); - if (ret) { - dev_err(dev, "%s - Can't initialize: %d\n", __func__, ret); - return ret; - } - pm_runtime_mark_last_busy(dev); return 0; |