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| author | Paul Parsons <lost.distance@yahoo.com> | 2012-04-11 00:35:34 +0100 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2012-05-01 12:00:22 +0200 |
| commit | 2fe372fc2a037c8de0c721b45cd0e4e9c8d8c25e (patch) | |
| tree | 26a25dcc10e86203adf981c280ed325b606c8921 /drivers/mfd | |
| parent | 1baf665b8167c0ab1240e76b1eae647d5ab60b23 (diff) | |
| download | blackbird-obmc-linux-2fe372fc2a037c8de0c721b45cd0e4e9c8d8c25e.tar.gz blackbird-obmc-linux-2fe372fc2a037c8de0c721b45cd0e4e9c8d8c25e.zip | |
mfd: Avoid unbalanced asic3 irq wakeup enables/disables
The mfd/asic3 driver does not currently define a irq_set_wake() handler.
Consequently any attempt to configure the 3 ASIC3 GPIO buttons - RECORD,
CALENDAR, HOME - as wakeup sources results in Unbalanced IRQ warnings
when the system is woken from sleep mode:
WARNING: at kernel/irq/manage.c:520 irq_set_irq_wake+0xc4/0xf8()
Unbalanced IRQ 342 wake disable
...
WARNING: at kernel/irq/manage.c:520 irq_set_irq_wake+0xc4/0xf8()
Unbalanced IRQ 337 wake disable
...
WARNING: at kernel/irq/manage.c:520 irq_set_irq_wake+0xc4/0xf8()
Unbalanced IRQ 339 wake disable
...
This patch adds a irq_set_wake() handler to the mfd/asic3 driver.
Signed-off-by: Paul Parsons <lost.distance@yahoo.com>
Cc: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd')
| -rw-r--r-- | drivers/mfd/asic3.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/mfd/asic3.c b/drivers/mfd/asic3.c index 4c3ec8113e7e..9d4a492e4295 100644 --- a/drivers/mfd/asic3.c +++ b/drivers/mfd/asic3.c @@ -353,12 +353,28 @@ static int asic3_gpio_irq_type(struct irq_data *data, unsigned int type) return 0; } +static int asic3_gpio_irq_set_wake(struct irq_data *data, unsigned int on) +{ + struct asic3 *asic = irq_data_get_irq_chip_data(data); + u32 bank, index; + u16 bit; + + bank = asic3_irq_to_bank(asic, data->irq); + index = asic3_irq_to_index(asic, data->irq); + bit = 1<<index; + + asic3_set_register(asic, bank + ASIC3_GPIO_SLEEP_MASK, bit, !on); + + return 0; +} + static struct irq_chip asic3_gpio_irq_chip = { .name = "ASIC3-GPIO", .irq_ack = asic3_mask_gpio_irq, .irq_mask = asic3_mask_gpio_irq, .irq_unmask = asic3_unmask_gpio_irq, .irq_set_type = asic3_gpio_irq_type, + .irq_set_wake = asic3_gpio_irq_set_wake, }; static struct irq_chip asic3_irq_chip = { |
