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authorFabio Estevam <fabio.estevam@freescale.com>2012-10-04 00:15:04 -0300
committerSamuel Ortiz <sameo@linux.intel.com>2012-11-20 12:21:10 +0100
commitffe20b6854db455a0c40e5fe1f9db2cfc9a62c6a (patch)
tree3d0c670bdb93327618e2dda4c47717e010d697a5 /drivers/mfd/da9052-core.c
parent17143e38afd60128332067ff91af080ddc764780 (diff)
downloadlinux-ffe20b6854db455a0c40e5fe1f9db2cfc9a62c6a.tar.bz2
mfd: da9052-core: Use regmap_irq_get_virq() and fix the probe
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() without da9052->irq_base. The recommended approach though is to use regmap_get_virq() to acquire the interrupt number and this allows to get rid of da9052->irq_base. 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.estevam@freescale.com> Reviwed-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd/da9052-core.c')
-rw-r--r--drivers/mfd/da9052-core.c34
1 files changed, 19 insertions, 15 deletions
diff --git a/drivers/mfd/da9052-core.c b/drivers/mfd/da9052-core.c
index a0a62b24621b..c96cdbc0daff 100644
--- a/drivers/mfd/da9052-core.c
+++ b/drivers/mfd/da9052-core.c
@@ -769,10 +769,15 @@ struct regmap_config da9052_regmap_config = {
};
EXPORT_SYMBOL_GPL(da9052_regmap_config);
+static int da9052_map_irq(struct da9052 *da9052, int irq)
+{
+ return regmap_irq_get_virq(da9052->irq_data, irq);
+}
+
int __devinit da9052_device_init(struct da9052 *da9052, u8 chip_id)
{
struct da9052_pdata *pdata = da9052->dev->platform_data;
- int ret;
+ int ret, i;
mutex_init(&da9052->auxadc_lock);
init_completion(&da9052->done);
@@ -782,35 +787,34 @@ 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);
-
- ret = request_threaded_irq(DA9052_IRQ_ADC_EOM, NULL, da9052_auxadc_irq,
+ i = da9052_map_irq(da9052, DA9052_IRQ_ADC_EOM);
+ ret = request_threaded_irq(i, 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_map_irq(da9052, DA9052_IRQ_ADC_EOM), da9052);
+ regmap_del_irq_chip(da9052->chip_irq, da9052->irq_data);
mfd_remove_devices(da9052->dev);
regmap_err:
return ret;
@@ -818,7 +822,7 @@ regmap_err:
void da9052_device_exit(struct da9052 *da9052)
{
- free_irq(DA9052_IRQ_ADC_EOM, da9052);
+ free_irq(da9052_map_irq(da9052, DA9052_IRQ_ADC_EOM), da9052);
regmap_del_irq_chip(da9052->chip_irq, da9052->irq_data);
mfd_remove_devices(da9052->dev);
}