ASoC: tas2781-i2c: Drop weird GPIO code

[ Upstream commit c2c0b67dca3cb3b3cea0dd60075a1c5ba77e2fcd ]

The tas2781-i2c driver gets an IRQ from either ACPI or device tree,
then proceeds to check if the IRQ has a corresponding GPIO and in
case it does enforce the GPIO as input and set a label on it.

This is abuse of the API:

- First we cannot guarantee that the numberspaces of the GPIOs and
  the IRQs are the same, i.e that an IRQ number corresponds to
  a GPIO number like that.

- Second, GPIO chips and IRQ chips should be treated as orthogonal
  APIs, the irqchip needs to ascertain that the backing GPIO line
  is set to input etc just using the irqchip.

- Third it is using the legacy <linux/gpio.h> API which should not
  be used in new code yet this was added just a year ago.

Delete the offending code.

If this creates problems the GPIO and irqchip maintainers can help
to fix the issues.

It *should* not create any problems, because the irq isn't
used anywhere in the driver, it's just obtained and then
left unused.

Fixes: ef3bcde75d06 ("ASoC: tas2781: Add tas2781 driver")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patch.msgid.link/20240807-asoc-tas-gpios-v2-1-bd0f2705d58b@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

1 files changed, 1 insertions, 6 deletions

diff --git a/include/sound/tas2781.h b/include/sound/tas2781.h
index be6f70dd54f9..f97f386e5a55 100644
--- a/include/sound/tas2781.h
+++ b/include/sound/tas2781.h
@@ -78,11 +78,6 @@ struct tasdevice {
 	bool is_loaderr;
 };
 
-struct tasdevice_irqinfo {
-	int irq_gpio;
-	int irq;
-};
-
 struct calidata {
 	unsigned char *data;
 	unsigned long total_sz;
@@ -90,7 +85,6 @@ struct calidata {
 
 struct tasdevice_priv {
 	struct tasdevice tasdevice[TASDEVICE_MAX_CHANNELS];
-	struct tasdevice_irqinfo irq_info;
 	struct tasdevice_rca rcabin;
 	struct calidata cali_data;
 	struct tasdevice_fw *fmw;
@@ -111,6 +105,7 @@ struct tasdevice_priv {
 	unsigned int chip_id;
 	unsigned int sysclk;
 
+	int irq;
 	int cur_prog;
 	int cur_conf;
 	int fw_state;