projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 55046237 MR |
1 | /* |
| 2 | * Copyright (C) 2008 Google, Inc. | |
| 3 | * Author: Nick Pelly <npelly@google.com> | |
| 4 | * | |
| 5 | * This software is licensed under the terms of the GNU General Public | |
| 6 | * License version 2, as published by the Free Software Foundation, and | |
| 7 | * may be copied, distributed, and modified under those terms. | |
| 8 | * | |
| 9 | * This program is distributed in the hope that it will be useful, | |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 | * GNU General Public License for more details. | |
| 13 | */ | |
| 14 | ||
| 15 | #ifndef __ASM_ARCH_MSM_SERIAL_HS_H | |
| 16 | #define __ASM_ARCH_MSM_SERIAL_HS_H | |
| 17 | ||
| 18 | #include <linux/serial_core.h> | |
| 19 | ||
| 20 | /* API to request the uart clock off or on for low power management | |
| 21 | * Clients should call request_clock_off() when no uart data is expected, | |
| 22 | * and must call request_clock_on() before any further uart data can be | |
| 23 | * received. */ | |
| 24 | extern void msm_hs_request_clock_off(struct uart_port *uport); | |
| 25 | extern void msm_hs_request_clock_on(struct uart_port *uport); | |
| 26 | ||
| 27 | /** | |
| 28 | * struct msm_serial_hs_platform_data | |
| 29 | * @rx_wakeup_irq: Rx activity irq | |
| 30 | * @rx_to_inject: extra character to be inserted to Rx tty on wakeup | |
| 31 | * @inject_rx: 1 = insert rx_to_inject. 0 = do not insert extra character | |
| 32 | * @exit_lpm_cb: function called before every Tx transaction | |
| 33 | * | |
| 34 | * This is an optional structure required for UART Rx GPIO IRQ based | |
| 35 | * wakeup from low power state. UART wakeup can be triggered by RX activity | |
| 36 | * (using a wakeup GPIO on the UART RX pin). This should only be used if | |
| 37 | * there is not a wakeup GPIO on the UART CTS, and the first RX byte is | |
| 38 | * known (eg., with the Bluetooth Texas Instruments HCILL protocol), | |
| 39 | * since the first RX byte will always be lost. RTS will be asserted even | |
| 40 | * while the UART is clocked off in this mode of operation. | |
| 41 | */ | |
| 42 | struct msm_serial_hs_platform_data { | |
| 43 | int rx_wakeup_irq; | |
| 44 | unsigned char inject_rx_on_wakeup; | |
| 45 | char rx_to_inject; | |
| 46 | void (*exit_lpm_cb)(struct uart_port *); | |
| 47 | }; | |
| 48 | ||
| 49 | #endif |