[PATCH -next v2 2/2] ASoC: tlv320adc3xxx: Fix build error for implicit function declaration

[Hui Tang <tanghui20@xxxxxxxxxx>]

sound/soc/codecs/tlv320adc3xxx.c: In function ‘adc3xxx_i2c_probe’:
sound/soc/codecs/tlv320adc3xxx.c:1359:21: error: implicit declaration of function ‘devm_gpiod_get’; did you mean ‘devm_gpio_free’? [-Werror=implicit-function-declaration]
  adc3xxx->rst_pin = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
                     ^~~~~~~~~~~~~~
                     devm_gpio_free
  CC [M]  drivers/gpu/drm/nouveau/nvkm/engine/disp/sorgt215.o
  LD [M]  sound/soc/codecs/snd-soc-ak4671.o
  LD [M]  sound/soc/codecs/snd-soc-arizona.o
  LD [M]  sound/soc/codecs/snd-soc-cros-ec-codec.o
  LD [M]  sound/soc/codecs/snd-soc-ak4641.o
  LD [M]  sound/soc/codecs/snd-soc-alc5632.o
sound/soc/codecs/tlv320adc3xxx.c:1359:50: error: ‘GPIOD_OUT_LOW’ undeclared (first use in this function); did you mean ‘GPIOF_INIT_LOW’?
  adc3xxx->rst_pin = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
                                                  ^~~~~~~~~~~~~
                                                  GPIOF_INIT_LOW
sound/soc/codecs/tlv320adc3xxx.c:1359:50: note: each undeclared identifier is reported only once for each function it appears in
  LD [M]  sound/soc/codecs/snd-soc-cs35l32.o
sound/soc/codecs/tlv320adc3xxx.c:1408:2: error: implicit declaration of function ‘gpiod_set_value_cansleep’; did you mean ‘gpio_set_value_cansleep’? [-Werror=implicit-function-declaration]
  gpiod_set_value_cansleep(adc3xxx->rst_pin, 1);
  ^~~~~~~~~~~~~~~~~~~~~~~~
  gpio_set_value_cansleep
  LD [M]  sound/soc/codecs/snd-soc-cs35l41-lib.o
  LD [M]  sound/soc/codecs/snd-soc-cs35l36.o
  LD [M]  sound/soc/codecs/snd-soc-cs35l34.o
  LD [M]  sound/soc/codecs/snd-soc-cs35l41.o
  CC [M]  drivers/gpu/drm/nouveau/nvkm/engine/disp/sormcp89.o
cc1: all warnings being treated as errors

Fixes: e9a3b57efd28 ("ASoC: codec: tlv320adc3xxx: New codec driver")
Signed-off-by: Hui Tang <tanghui20@xxxxxxxxxx>
---
Changes in v2:
* Add missing header files instead of adding dependencies
* Calling 'gpiochip_remove' depends on 'CONFIG_GPIOLIB' enabled

 sound/soc/codecs/tlv320adc3xxx.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sound/soc/codecs/tlv320adc3xxx.c b/sound/soc/codecs/tlv320adc3xxx.c
index a5e9f80cfa32..80b8115e6053 100644
--- a/sound/soc/codecs/tlv320adc3xxx.c
+++ b/sound/soc/codecs/tlv320adc3xxx.c
@@ -14,6 +14,7 @@
 
 #include <dt-bindings/sound/tlv320adc3xxx.h>
 #include <linux/clk.h>
+#include <linux/gpio/consumer.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/io.h>
@@ -1025,7 +1026,9 @@ static const struct gpio_chip adc3xxx_gpio_chip = {
 
 static void adc3xxx_free_gpio(struct adc3xxx *adc3xxx)
 {
+#ifdef CONFIG_GPIOLIB
 	gpiochip_remove(&adc3xxx->gpio_chip);
+#endif
 }
 
 static void adc3xxx_init_gpio(struct adc3xxx *adc3xxx)
-- 
2.17.1