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Blackfin: fix bugs in GPIO resume code 

Change the bfin_gpio_pm_hibernate_restore() function to:
1) AND restored DATA with DIR (not OR) to get correct final state
2) Restore DATA before setting DIR to avoid glitches

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Michael Hennerich 2009-07-08 12:04:43 +00:00 committed by Mike Frysinger
parent 4c94c3e09a
commit c03c2a8734
1 changed files with 2 additions and 4 deletions
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6
arch/blackfin/kernel/bfin_gpio.c
View File

@ -686,14 +686,12 @@ void bfin_gpio_pm_hibernate_restore(void)
*port_fer[bank] = gpio_bank_saved[bank].fer; *port_fer[bank] = gpio_bank_saved[bank].fer;
#endif #endif
gpio_array[bank]->inen = gpio_bank_saved[bank].inen; gpio_array[bank]->inen = gpio_bank_saved[bank].inen;
gpio_array[bank]->data_set = gpio_bank_saved[bank].data
& gpio_bank_saved[bank].dir;
gpio_array[bank]->dir = gpio_bank_saved[bank].dir; gpio_array[bank]->dir = gpio_bank_saved[bank].dir;
gpio_array[bank]->polar = gpio_bank_saved[bank].polar; gpio_array[bank]->polar = gpio_bank_saved[bank].polar;
gpio_array[bank]->edge = gpio_bank_saved[bank].edge; gpio_array[bank]->edge = gpio_bank_saved[bank].edge;
gpio_array[bank]->both = gpio_bank_saved[bank].both; gpio_array[bank]->both = gpio_bank_saved[bank].both;
gpio_array[bank]->data_set = gpio_bank_saved[bank].data
| gpio_bank_saved[bank].dir;
gpio_array[bank]->maska = gpio_bank_saved[bank].maska; gpio_array[bank]->maska = gpio_bank_saved[bank].maska;
} }
AWA_DUMMY_READ(maska); AWA_DUMMY_READ(maska);