diff options
Diffstat (limited to 'arch/arm/mach-tegra/wakeups-t11x.c')
| -rw-r--r-- | arch/arm/mach-tegra/wakeups-t11x.c | 66 |
1 files changed, 61 insertions, 5 deletions
diff --git a/arch/arm/mach-tegra/wakeups-t11x.c b/arch/arm/mach-tegra/wakeups-t11x.c index 84f8b8afb037..43a0bdf150ab 100644 --- a/arch/arm/mach-tegra/wakeups-t11x.c +++ b/arch/arm/mach-tegra/wakeups-t11x.c @@ -1,15 +1,17 @@ /* * Copyright (c) 2012-2013, NVIDIA CORPORATION. All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. * - * This program is distributed in the hope that it will be useful, but WITHOUT + * This program is distributed in the hope it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/kernel.h> @@ -23,6 +25,17 @@ #include "board.h" #include "tegra-board-id.h" #include "gpio-names.h" +#include "pm-irq.h" + +/* Tegra USB1 wake source index */ +#define USB1_VBUS_WAKE 19 +#define USB1_ID_WAKE 21 +#define USB1_REM_WAKE 39 + +/* constants for USB1 wake sources - VBUS and ID */ +#define USB1_IF_USB_PHY_VBUS_SENSORS_0 0x408 +#define VBUS_WAKEUP_STS_BIT 10 +#define ID_STS_BIT 2 static int tegra_gpio_wakes[] = { TEGRA_GPIO_PO5, /* wake0 */ @@ -150,6 +163,49 @@ static int tegra_wake_event_irq[] = { static int last_gpio = -1; +/* USB1 VBUS and ID wake sources are handled as special case + * Note: SD card detect is an ANY wake source but is + * mostly a GPIO which can handle any edge wakeup. + */ +static u8 any_wake_t11x[] = { + /* DO NOT EDIT this list */ + [ANY_WAKE_INDEX_VBUS] = USB1_VBUS_WAKE, + [ANY_WAKE_INDEX_ID] = USB1_ID_WAKE, +}; + +void tegra_get_internal_any_wake_list(u8 *wake_count, u8 **any_wake, + u8 *remote_usb) +{ + *wake_count = ARRAY_SIZE(any_wake_t11x); + *any_wake = any_wake_t11x; + *remote_usb = USB1_REM_WAKE; +} + +/* Needed on dalmore today hence exposed this API */ +int get_vbus_id_cable_connect_state(bool *is_vbus_connected, + bool *is_id_connected) +{ + static void __iomem *usb1_base = IO_ADDRESS(TEGRA_USB_BASE); + u32 reg; + + reg = readl(usb1_base + USB1_IF_USB_PHY_VBUS_SENSORS_0); + + /* ID bit when 0 - ID cable connected */ + *is_id_connected = (reg & (1 << ID_STS_BIT)) ? false : true; + + /* + * VBUS_WAKEUP_STS_BIT is also set when ID is connected + * and we are supplying VBUS, hence below conditional assignment + */ + if (*is_id_connected) + *is_vbus_connected = false; + else + /* VBUS bit when 1 - VBUS cable connected */ + *is_vbus_connected = (reg & (1 << VBUS_WAKEUP_STS_BIT)) ? + true : false; + return 0; +} + int tegra_gpio_to_wake(int gpio) { int i; |