From a08e54549e743ea3704da939f92caf3eaa8471d3 Mon Sep 17 00:00:00 2001 From: "Mark A. Greer" Date: Tue, 2 Sep 2014 15:12:23 -0700 Subject: 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 Signed-off-by: Samuel Ortiz --- drivers/nfc/trf7970a.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) (limited to 'drivers/nfc/trf7970a.c') 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; -- cgit v1.2.3