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iio: adc: cpcap: Remove hung interrupt quirk 

This is no longer needed as the real problem was interrupt flags
not getting passed properly from device tree to the cpcap-core.c
mfd driver. This got fixed with commit ac89473213 ("mfd: cpcap:
Fix interrupt to use level interrupt") So let's remove ADC
interrupt specific the quirk.

Cc: Marcel Partap <mpartap@gmx.net>
Cc: Michael Scott <michael.scott@linaro.org>
Reviewed-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Tony Lindgren 2017-05-22 17:51:46 -07:00 committed by Jonathan Cameron
parent 951d21de88
commit 9d965236fe
1 changed files with 1 additions and 23 deletions
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24
drivers/iio/adc/cpcap-adc.c
View File

@ -88,7 +88,7 @@
#define ST_ADC_CAL_BATTI_LOW_THRESHOLD 494
#define ST_ADC_CALIBRATE_DIFF_THRESHOLD 3
#define CPCAP_ADC_MAX_RETRIES 5 /* Calibration and quirk */
#define CPCAP_ADC_MAX_RETRIES 5 /* Calibration */
/**
* struct cpcap_adc_ato - timing settings for cpcap adc
@ -634,27 +634,6 @@ static void cpcap_adc_setup_bank(struct cpcap_adc *ddata,
}
}
/*
* Occasionally the ADC does not seem to start and there will be no
* interrupt. Let's re-init interrupt to prevent the ADC from hanging
* for the next request. It is unclear why this happens, but the next
* request will usually work after doing this.
*/
static void cpcap_adc_quirk_reset_lost_irq(struct cpcap_adc *ddata)
{
int error;
dev_info(ddata->dev, "lost ADC irq, attempting to reinit\n");
disable_irq(ddata->irq);
error = regmap_update_bits(ddata->reg, CPCAP_REG_ADCC2,
CPCAP_BIT_ADTRIG_DIS,
CPCAP_BIT_ADTRIG_DIS);
if (error)
dev_warn(ddata->dev, "%s reset failed: %i\n",
__func__, error);
enable_irq(ddata->irq);
}
static int cpcap_adc_start_bank(struct cpcap_adc *ddata,
struct cpcap_adc_request *req)
{
@ -672,7 +651,6 @@ static int cpcap_adc_start_bank(struct cpcap_adc *ddata,
return 0;
if (error == 0) {
cpcap_adc_quirk_reset_lost_irq(ddata);
error = -ETIMEDOUT;
continue;
}