diff options
| author | ximingc <ximingc@nvidia.com> | 2014-01-23 11:25:50 +0800 |
|---|---|---|
| committer | Gerrit Code Review <gerrit2@nvidia.com> | 2014-01-26 23:11:04 -0800 |
| commit | a61fb8cd8298a8bf3e73da5bba8dacc07752c984 (patch) | |
| tree | 5499a263f8a02a1456629e2a2176e9df29cc3d0e | |
| parent | 85653b40549f57dbf60371e7b3d5f761f2579403 (diff) | |
gpio:tegra:Add sleep gpio function
Some GPIO pins need re-configure when system enters LP0
Bug 1439735
Change-Id: I3d9c864b5c099ab834543e2f3c905cab8a957372
Signed-off-by: ximingc <ximingc@nvidia.com>
| -rw-r--r-- | drivers/gpio/gpio-tegra.c | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c index d2626edcd941..6840caae921d 100644 --- a/drivers/gpio/gpio-tegra.c +++ b/drivers/gpio/gpio-tegra.c @@ -6,7 +6,7 @@ * Author: * Erik Gilling <konkers@google.com> * - * Copyright (c) 2011-2012, NVIDIA CORPORATION. All rights reserved. + * Copyright (c) 2011-2014, NVIDIA CORPORATION. All rights reserved. * * This software is licensed under the terms of the GNU General Public * License version 2, as published by the Free Software Foundation, and @@ -355,7 +355,30 @@ static void tegra_gpio_irq_handler(unsigned int irq, struct irq_desc *desc) } +static void tegra_gpio_config_table(struct gpio_init_pin_info *config, int len) +{ + int i; + struct gpio_init_pin_info *pins_info; + pins_info = config; + + for (i = 0; i < len; ++i) { + tegra_gpio_init_configure(pins_info->gpio_nr, + pins_info->is_input, pins_info->value); + pins_info++; + } +} + #ifdef CONFIG_PM_SLEEP + +static struct gpio_init_pin_info *sleep_gpio; +static int sleep_gpio_size; + +void tegra11x_set_sleep_gpio(struct gpio_init_pin_info *config, int size) +{ + sleep_gpio = config; + sleep_gpio_size = size; +} + void tegra_gpio_resume(void) { unsigned long flags; @@ -402,6 +425,11 @@ int tegra_gpio_suspend(void) tegra_gpio_writel(bank->wake_enb[p], GPIO_INT_ENB(gpio)); } } + + /* change to sleep gpio settings */ + if (sleep_gpio && sleep_gpio_size > 0) + tegra_gpio_config_table(sleep_gpio, sleep_gpio_size); + local_irq_restore(flags); return 0; |