NFC: trf7970a: trf7970a_init() turns off the RF transmitter
When trf7970a_init() initializes the trf7970a it
implicitly turns off the RF transmitter. Track
this by clearing the TRF7970A_CHIP_STATUS_RF_ON
bit in the cached trf->chip_status_ctrl.
Signed-off-by: Mark A. Greer <mgreer@animalcreek.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/drivers/nfc/trf7970a.c b/drivers/nfc/trf7970a.c
index 429146b..ab6e276 100644
--- a/drivers/nfc/trf7970a.c
+++ b/drivers/nfc/trf7970a.c
@@ -826,6 +826,8 @@
usleep_range(1000, 2000);
+ trf->chip_status_ctrl &= ~TRF7970A_CHIP_STATUS_RF_ON;
+
ret = trf7970a_write(trf, TRF7970A_MODULATOR_SYS_CLK_CTRL, 0);
if (ret)
goto err_out;