i2c-designware: Don't use the IC_CLR_INTR register to clear interrupts

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We're strongly discouraged from using the IC_CLR_INTR register because
it clears all software-clearable interrupts asserted at the moment.

  stat = readl(IC_INTR_STAT);
    :
    :  <=== Interrupts asserted during this period will be lost
    :
  readl(IC_CLR_INTR);

Instead, use the separately-prepared IC_CLR_* registers.

At the same time, this patch adds all remaining interrupt definitions
available in the DesignWare I2C hardware.

Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

...

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Shinya Kuribayashi 2009-11-06 21:44:37 +09:00 • committed by Ben Dooks

parent ed5e1dd5f2

commit e28000a38d

1 changed files with 79 additions and 5 deletions

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drivers/i2c/busses/i2c-designware.c

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