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mfd: Convert WM835x IRQ handling to use a data table

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Rather than open coding individual IRQs in each function which
manipulates them store data for IRQs in a table which is then
referenced in the users.

This is a substantial code shrink and should be a performance win in
cases where only a single IRQ goes off at once since instead of
reading four of the second level IRQ registers for each interrupt
we read only the sub-registers which have had an interrupt flagged.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Mark Brown 2009-10-12 16:15:10 +01:00 committed by Samuel Ortiz
parent e0a3389ab9
commit 0c7229f93a
2 changed files with 387 additions and 648 deletions
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1017
drivers/mfd/wm8350-irq.c
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18
include/linux/mfd/wm8350/gpio.h
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@ -172,6 +172,24 @@
#define WM8350_GPIO_DEBOUNCE_OFF 0
#define WM8350_GPIO_DEBOUNCE_ON 1
/*
* R30 (0x1E) - GPIO Interrupt Status
*/
#define WM8350_GP12_EINT 0x1000
#define WM8350_GP11_EINT 0x0800
#define WM8350_GP10_EINT 0x0400
#define WM8350_GP9_EINT 0x0200
#define WM8350_GP8_EINT 0x0100
#define WM8350_GP7_EINT 0x0080
#define WM8350_GP6_EINT 0x0040
#define WM8350_GP5_EINT 0x0020
#define WM8350_GP4_EINT 0x0010
#define WM8350_GP3_EINT 0x0008
#define WM8350_GP2_EINT 0x0004
#define WM8350_GP1_EINT 0x0002
#define WM8350_GP0_EINT 0x0001
/*
* R128 (0x80) - GPIO Debounce
*/