From: Fabio Estevam <fabio.este...@freescale.com>
On a mx53qsb dt-kernel the da9052-core driver fails to probe as follows:
da9052 1-0048: DA9052 ADC IRQ failed ret=-22
The reason for the error was due to passing only the offset as the interrupt
number in request_threaded_irq().
The recommended approach though is to use regmap_get_virq() to acquire the
interrupt number.
Fix it and allow the driver to probe successfully.
Also provide a few more error logs and change the irq string to "adc-irq", so
that it appears as a single word in 'cat /proc/interrupts'.
Signed-off-by: Fabio Estevam <fabio.este...@freescale.com>
---
Changes since v2:
- Use regmap_irq_get_virq() instead of relying on irq_base
Arnd/Mark,
I also plan to convert the other da9052 drivers to use regmap_irq_get_virq().
drivers/mfd/da9052-core.c | 31 ++++++++++++++++++-------------
include/linux/mfd/da9052/da9052.h | 1 +
2 files changed, 19 insertions(+), 13 deletions(-)
diff --git a/drivers/mfd/da9052-core.c b/drivers/mfd/da9052-core.c
index a0a62b2..79f9674 100644
--- a/drivers/mfd/da9052-core.c
+++ b/drivers/mfd/da9052-core.c
@@ -782,35 +782,40 @@ int __devinit da9052_device_init(struct da9052 *da9052,
u8 chip_id)
da9052->chip_id = chip_id;
- if (!pdata || !pdata->irq_base)
- da9052->irq_base = -1;
- else
- da9052->irq_base = pdata->irq_base;
-
ret = regmap_add_irq_chip(da9052->regmap, da9052->chip_irq,
IRQF_TRIGGER_LOW | IRQF_ONESHOT,
- da9052->irq_base, &da9052_regmap_irq_chip,
+ -1, &da9052_regmap_irq_chip,
&da9052->irq_data);
- if (ret < 0)
+ if (ret < 0) {
+ dev_err(da9052->dev, "regmap_add_irq_chip failed: %d\n", ret);
goto regmap_err;
+ }
- da9052->irq_base = regmap_irq_chip_get_base(da9052->irq_data);
+ da9052->irq = regmap_irq_get_virq(da9052->irq_data, DA9052_IRQ_ADC_EOM);
- ret = request_threaded_irq(DA9052_IRQ_ADC_EOM, NULL, da9052_auxadc_irq,
+ if (da9052->irq < 0) {
+ ret = da9052->irq;
+ dev_err(da9052->dev, "regmap_irq_get_virq failed: %d\n", ret);
+ goto regmap_err;
+ }
+
+ ret = request_threaded_irq(da9052->irq, NULL, da9052_auxadc_irq,
IRQF_TRIGGER_LOW | IRQF_ONESHOT,
- "adc irq", da9052);
+ "adc-irq", da9052);
if (ret != 0)
dev_err(da9052->dev, "DA9052 ADC IRQ failed ret=%d\n", ret);
ret = mfd_add_devices(da9052->dev, -1, da9052_subdev_info,
ARRAY_SIZE(da9052_subdev_info), NULL, 0, NULL);
- if (ret)
+ if (ret) {
+ dev_err(da9052->dev, "mfd_add_devices failed: %d\n", ret);
goto err;
+ }
return 0;
err:
- free_irq(DA9052_IRQ_ADC_EOM, da9052);
+ free_irq(da9052->irq, da9052);
mfd_remove_devices(da9052->dev);
regmap_err:
return ret;
@@ -818,7 +823,7 @@ regmap_err:
void da9052_device_exit(struct da9052 *da9052)
{
- free_irq(DA9052_IRQ_ADC_EOM, da9052);
+ free_irq(da9052->irq, da9052);
regmap_del_irq_chip(da9052->chip_irq, da9052->irq_data);
mfd_remove_devices(da9052->dev);
}
diff --git a/include/linux/mfd/da9052/da9052.h
b/include/linux/mfd/da9052/da9052.h
index 0507c4c..f0b259d 100644
--- a/include/linux/mfd/da9052/da9052.h
+++ b/include/linux/mfd/da9052/da9052.h
@@ -99,6 +99,7 @@ struct da9052 {
u8 chip_id;
int chip_irq;
+ int irq;
};
/* ADC API */
--
1.7.9.5
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