diff options
author | Fabio Estevam <fabio.estevam@freescale.com> | 2012-10-04 00:15:04 -0300 |
---|---|---|
committer | Samuel Ortiz <sameo@linux.intel.com> | 2012-11-20 12:21:10 +0100 |
commit | ffe20b6854db455a0c40e5fe1f9db2cfc9a62c6a (patch) | |
tree | 3d0c670bdb93327618e2dda4c47717e010d697a5 | |
parent | 17143e38afd60128332067ff91af080ddc764780 (diff) | |
download | op-kernel-dev-ffe20b6854db455a0c40e5fe1f9db2cfc9a62c6a.zip op-kernel-dev-ffe20b6854db455a0c40e5fe1f9db2cfc9a62c6a.tar.gz |
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>
-rw-r--r-- | drivers/mfd/da9052-core.c | 34 |
1 files changed, 19 insertions, 15 deletions
diff --git a/drivers/mfd/da9052-core.c b/drivers/mfd/da9052-core.c index a0a62b2..c96cdbc 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); } |