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 ac89473213c6 ("mfd: cpcap:
Fix interrupt to use level interrupt") So let's remove ADC
interrupt specific the quirk.
Cc: Marcel Partap <mpartap@xxxxxxx>
Cc: Michael Scott <michael.scott@xxxxxxxxxx>
Reviewed-by: Sebastian Reichel <sre@xxxxxxxxxx>
Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
---
drivers/iio/adc/cpcap-adc.c | 24 +-----------------------
1 file changed, 1 insertion(+), 23 deletions(-)
diff --git a/drivers/iio/adc/cpcap-adc.c b/drivers/iio/adc/cpcap-adc.c
--- a/drivers/iio/adc/cpcap-adc.c
+++ b/drivers/iio/adc/cpcap-adc.c
@@ -89,7 +89,7 @@
#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
@@ -635,27 +635,6 @@ 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)
{
@@ -673,7 +652,6 @@ 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;
}
--
2.13.0
--
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