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[PATCH v4 2/9] NFC: trf7970a: Don't de-assert EN2 unless it was asserted

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When the trf7970a part has the bug related to 'en2-rf-quirk',
the GPIO connected to the EN2 pin will not be asserted by the
driver when powering up so it shouldn't be de-asserted when
powering down.

Signed-off-by: Mark Greer <mgreer@xxxxxxxxxxxxxxx>
---
Note: I would rather use a single 'if' statement with '&&' but I
did it this way to match what is in the trf7970a_power_up() routine.
Either way, it is overwritten by a patch later in this series.

 drivers/nfc/trf7970a.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/nfc/trf7970a.c b/drivers/nfc/trf7970a.c
index 2d1c8ca6e679..1a87525a88cd 100644
--- a/drivers/nfc/trf7970a.c
+++ b/drivers/nfc/trf7970a.c
@@ -1940,8 +1940,10 @@ static int trf7970a_power_down(struct trf7970a *trf)
 	}
 
 	gpio_set_value(trf->en_gpio, 0);
-	if (gpio_is_valid(trf->en2_gpio))
-		gpio_set_value(trf->en2_gpio, 0);
+
+	if (!(trf->quirks & TRF7970A_QUIRK_EN2_MUST_STAY_LOW))
+		if (gpio_is_valid(trf->en2_gpio))
+			gpio_set_value(trf->en2_gpio, 0);
 
 	ret = regulator_disable(trf->regulator);
 	if (ret)
-- 
2.12.0




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