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iio: adc: ad_sigma_delta: Add optional irq selection

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Add optional irq_num attribute to ad_sigma_delta_info structure for
selecting the used interrupt line for ADC's conversion completion.

Signed-off-by: Dumitru Ceclan <mitrutzceclan@gmail.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20240228110622.25114-2-mitrutzceclan@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Dumitru Ceclan 2024-02-28 13:06:19 +02:00 committed by Jonathan Cameron
parent 3d50d03f21
commit 7b0c9f8fa3
2 changed files with 17 additions and 9 deletions
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23
drivers/iio/adc/ad_sigma_delta.c
View file

@ -222,11 +222,11 @@ int ad_sd_calibrate(struct ad_sigma_delta *sigma_delta,
goto out;
sigma_delta->irq_dis = false;
enable_irq(sigma_delta->spi->irq);
enable_irq(sigma_delta->irq_line);
timeout = wait_for_completion_timeout(&sigma_delta->completion, 2 * HZ);
if (timeout == 0) {
sigma_delta->irq_dis = true;
disable_irq_nosync(sigma_delta->spi->irq);
disable_irq_nosync(sigma_delta->irq_line);
ret = -EIO;
} else {
ret = 0;
@ -295,7 +295,7 @@ int ad_sigma_delta_single_conversion(struct iio_dev *indio_dev,
ad_sigma_delta_set_mode(sigma_delta, AD_SD_MODE_SINGLE);
sigma_delta->irq_dis = false;
enable_irq(sigma_delta->spi->irq);
enable_irq(sigma_delta->irq_line);
ret = wait_for_completion_interruptible_timeout(
&sigma_delta->completion, HZ);
@ -315,7 +315,7 @@ int ad_sigma_delta_single_conversion(struct iio_dev *indio_dev,
out:
if (!sigma_delta->irq_dis) {
disable_irq_nosync(sigma_delta->spi->irq);
disable_irq_nosync(sigma_delta->irq_line);
sigma_delta->irq_dis = true;
}
@ -396,7 +396,7 @@ static int ad_sd_buffer_postenable(struct iio_dev *indio_dev)
goto err_unlock;
sigma_delta->irq_dis = false;
enable_irq(sigma_delta->spi->irq);
enable_irq(sigma_delta->irq_line);
return 0;
@ -414,7 +414,7 @@ static int ad_sd_buffer_postdisable(struct iio_dev *indio_dev)
wait_for_completion_timeout(&sigma_delta->completion, HZ);
if (!sigma_delta->irq_dis) {
disable_irq_nosync(sigma_delta->spi->irq);
disable_irq_nosync(sigma_delta->irq_line);
sigma_delta->irq_dis = true;
}
@ -516,7 +516,7 @@ static irqreturn_t ad_sd_trigger_handler(int irq, void *p)
irq_handled:
iio_trigger_notify_done(indio_dev->trig);
sigma_delta->irq_dis = false;
enable_irq(sigma_delta->spi->irq);
enable_irq(sigma_delta->irq_line);
return IRQ_HANDLED;
}
@ -587,13 +587,13 @@ static int devm_ad_sd_probe_trigger(struct device *dev, struct iio_dev *indio_de
sigma_delta->irq_dis = true;
/* the IRQ core clears IRQ_DISABLE_UNLAZY flag when freeing an IRQ */
irq_set_status_flags(sigma_delta->spi->irq, IRQ_DISABLE_UNLAZY);
irq_set_status_flags(sigma_delta->irq_line, IRQ_DISABLE_UNLAZY);
/* Allow overwriting the flags from firmware */
if (!irq_flags)
irq_flags = sigma_delta->info->irq_flags;
ret = devm_request_irq(dev, sigma_delta->spi->irq,
ret = devm_request_irq(dev, sigma_delta->irq_line,
ad_sd_data_rdy_trig_poll,
irq_flags | IRQF_NO_AUTOEN,
indio_dev->name,
@ -673,6 +673,11 @@ int ad_sd_init(struct ad_sigma_delta *sigma_delta, struct iio_dev *indio_dev,
}
}
if (info->irq_line)
sigma_delta->irq_line = info->irq_line;
else
sigma_delta->irq_line = spi->irq;
iio_device_set_drvdata(indio_dev, sigma_delta);
return 0;

3
include/linux/iio/adc/ad_sigma_delta.h
View file

@ -48,6 +48,7 @@ struct iio_dev;
* be used.
* @irq_flags: flags for the interrupt used by the triggered buffer
* @num_slots: Number of sequencer slots
* @irq_line: IRQ for reading conversions. If 0, spi->irq will be used
*/
struct ad_sigma_delta_info {
int (*set_channel)(struct ad_sigma_delta *, unsigned int channel);
@ -62,6 +63,7 @@ struct ad_sigma_delta_info {
unsigned int data_reg;
unsigned long irq_flags;
unsigned int num_slots;
int irq_line;
};
/**
@ -89,6 +91,7 @@ struct ad_sigma_delta {
unsigned int active_slots;
unsigned int current_slot;
unsigned int num_slots;
int irq_line;
bool status_appended;
/* map slots to channels in order to know what to expect from devices */
unsigned int *slots;