diff options
author | Michael Hennerich <michael.hennerich@analog.com> | 2010-03-10 14:26:06 +0000 |
---|---|---|
committer | Mike Frysinger <vapier@gentoo.org> | 2010-05-21 09:40:16 -0400 |
commit | bb84dbf69b0730fcc78c275f900ed74b2b8453a5 (patch) | |
tree | c6389f2a68b1f511f685ef5069a4704614ed11c2 /arch/blackfin/kernel | |
parent | 85eb0e4b15efc8034cbae193c99536dae7896701 (diff) |
Blackfin: punt Blackfin-specific GPIO wakeup API
This patch removes a custom GPIO wakeup API which allowed GPIOs to act
as wakeup sources, which are not configured as Interrupts.
This API is a leftover from the time before irq_wake was established.
From now on people must use enable_irq_wake(GPIO_IRQx) and the GPIO in
question needs to be configured as Interrupt.
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch/blackfin/kernel')
-rw-r--r-- | arch/blackfin/kernel/bfin_gpio.c | 131 |
1 files changed, 12 insertions, 119 deletions
diff --git a/arch/blackfin/kernel/bfin_gpio.c b/arch/blackfin/kernel/bfin_gpio.c index e35e20f00d9..42833ee2b30 100644 --- a/arch/blackfin/kernel/bfin_gpio.c +++ b/arch/blackfin/kernel/bfin_gpio.c @@ -475,9 +475,7 @@ GET_GPIO_P(maskb) #ifdef CONFIG_PM - static unsigned short wakeup_map[GPIO_BANK_NUM]; -static unsigned char wakeup_flags_map[MAX_BLACKFIN_GPIOS]; static const unsigned int sic_iwr_irqs[] = { #if defined(BF533_FAMILY) @@ -514,112 +512,26 @@ static const unsigned int sic_iwr_irqs[] = { ************************************************************* * MODIFICATION HISTORY : **************************************************************/ -int gpio_pm_wakeup_request(unsigned gpio, unsigned char type) -{ - unsigned long flags; - - if ((check_gpio(gpio) < 0) || !type) - return -EINVAL; - - local_irq_save_hw(flags); - wakeup_map[gpio_bank(gpio)] |= gpio_bit(gpio); - wakeup_flags_map[gpio] = type; - local_irq_restore_hw(flags); - - return 0; -} -EXPORT_SYMBOL(gpio_pm_wakeup_request); - -void gpio_pm_wakeup_free(unsigned gpio) +int gpio_pm_wakeup_ctrl(unsigned gpio, unsigned ctrl) { unsigned long flags; if (check_gpio(gpio) < 0) - return; + return -EINVAL; local_irq_save_hw(flags); - - wakeup_map[gpio_bank(gpio)] &= ~gpio_bit(gpio); - - local_irq_restore_hw(flags); -} -EXPORT_SYMBOL(gpio_pm_wakeup_free); - -static int bfin_gpio_wakeup_type(unsigned gpio, unsigned char type) -{ - port_setup(gpio, GPIO_USAGE); - set_gpio_dir(gpio, 0); - set_gpio_inen(gpio, 1); - - if (type & (PM_WAKE_RISING | PM_WAKE_FALLING)) - set_gpio_edge(gpio, 1); - else - set_gpio_edge(gpio, 0); - - if ((type & (PM_WAKE_BOTH_EDGES)) == (PM_WAKE_BOTH_EDGES)) - set_gpio_both(gpio, 1); + if (ctrl) + wakeup_map[gpio_bank(gpio)] |= gpio_bit(gpio); else - set_gpio_both(gpio, 0); - - if ((type & (PM_WAKE_FALLING | PM_WAKE_LOW))) - set_gpio_polar(gpio, 1); - else - set_gpio_polar(gpio, 0); + wakeup_map[gpio_bank(gpio)] &= ~gpio_bit(gpio); - SSYNC(); - - return 0; -} - -u32 bfin_pm_standby_setup(void) -{ - u16 bank, mask, i, gpio; - - for (i = 0; i < MAX_BLACKFIN_GPIOS; i += GPIO_BANKSIZE) { - mask = wakeup_map[gpio_bank(i)]; - bank = gpio_bank(i); - - gpio_bank_saved[bank].maskb = gpio_array[bank]->maskb; - gpio_array[bank]->maskb = 0; - - if (mask) { -#if defined(CONFIG_BF52x) || defined(BF537_FAMILY) || defined(CONFIG_BF51x) - gpio_bank_saved[bank].fer = *port_fer[bank]; -#endif - gpio_bank_saved[bank].inen = gpio_array[bank]->inen; - gpio_bank_saved[bank].polar = gpio_array[bank]->polar; - gpio_bank_saved[bank].dir = gpio_array[bank]->dir; - gpio_bank_saved[bank].edge = gpio_array[bank]->edge; - gpio_bank_saved[bank].both = gpio_array[bank]->both; - gpio_bank_saved[bank].reserved = - reserved_gpio_map[bank]; - - gpio = i; - - while (mask) { - if ((mask & 1) && (wakeup_flags_map[gpio] != - PM_WAKE_IGNORE)) { - reserved_gpio_map[gpio_bank(gpio)] |= - gpio_bit(gpio); - bfin_gpio_wakeup_type(gpio, - wakeup_flags_map[gpio]); - set_gpio_data(gpio, 0); /*Clear*/ - } - gpio++; - mask >>= 1; - } - - bfin_internal_set_wake(sic_iwr_irqs[bank], 1); - gpio_array[bank]->maskb_set = wakeup_map[gpio_bank(i)]; - } - } - - AWA_DUMMY_READ(maskb_set); + set_gpio_maskb(gpio, ctrl); + local_irq_restore_hw(flags); return 0; } -void bfin_pm_standby_restore(void) +int bfin_pm_standby_ctrl(unsigned ctrl) { u16 bank, mask, i; @@ -627,24 +539,10 @@ void bfin_pm_standby_restore(void) mask = wakeup_map[gpio_bank(i)]; bank = gpio_bank(i); - if (mask) { -#if defined(CONFIG_BF52x) || defined(BF537_FAMILY) || defined(CONFIG_BF51x) - *port_fer[bank] = gpio_bank_saved[bank].fer; -#endif - gpio_array[bank]->inen = gpio_bank_saved[bank].inen; - gpio_array[bank]->dir = gpio_bank_saved[bank].dir; - gpio_array[bank]->polar = gpio_bank_saved[bank].polar; - gpio_array[bank]->edge = gpio_bank_saved[bank].edge; - gpio_array[bank]->both = gpio_bank_saved[bank].both; - - reserved_gpio_map[bank] = - gpio_bank_saved[bank].reserved; - bfin_internal_set_wake(sic_iwr_irqs[bank], 0); - } - - gpio_array[bank]->maskb = gpio_bank_saved[bank].maskb; + if (mask) + bfin_internal_set_wake(sic_iwr_irqs[bank], ctrl); } - AWA_DUMMY_READ(maskb); + return 0; } void bfin_gpio_pm_hibernate_suspend(void) @@ -708,16 +606,11 @@ void bfin_gpio_pm_hibernate_restore(void) #else /* CONFIG_BF54x */ #ifdef CONFIG_PM -u32 bfin_pm_standby_setup(void) +int bfin_pm_standby_ctrl(unsigned ctrl) { return 0; } -void bfin_pm_standby_restore(void) -{ - -} - void bfin_gpio_pm_hibernate_suspend(void) { int i, bank; |