Current File : //usr/src/kernels/3.10.0-957.21.3.el7.centos.plus.x86_64/include/linux/platform_data/msm_serial_hs.h
/*
* Copyright (C) 2008 Google, Inc.
* Author: Nick Pelly <npelly@google.com>
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that 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.
*/
#ifndef __ASM_ARCH_MSM_SERIAL_HS_H
#define __ASM_ARCH_MSM_SERIAL_HS_H
#include <linux/serial_core.h>
/* API to request the uart clock off or on for low power management
* Clients should call request_clock_off() when no uart data is expected,
* and must call request_clock_on() before any further uart data can be
* received. */
extern void msm_hs_request_clock_off(struct uart_port *uport);
extern void msm_hs_request_clock_on(struct uart_port *uport);
/**
* struct msm_serial_hs_platform_data
* @rx_wakeup_irq: Rx activity irq
* @rx_to_inject: extra character to be inserted to Rx tty on wakeup
* @inject_rx: 1 = insert rx_to_inject. 0 = do not insert extra character
* @exit_lpm_cb: function called before every Tx transaction
*
* This is an optional structure required for UART Rx GPIO IRQ based
* wakeup from low power state. UART wakeup can be triggered by RX activity
* (using a wakeup GPIO on the UART RX pin). This should only be used if
* there is not a wakeup GPIO on the UART CTS, and the first RX byte is
* known (eg., with the Bluetooth Texas Instruments HCILL protocol),
* since the first RX byte will always be lost. RTS will be asserted even
* while the UART is clocked off in this mode of operation.
*/
struct msm_serial_hs_platform_data {
int rx_wakeup_irq;
unsigned char inject_rx_on_wakeup;
char rx_to_inject;
void (*exit_lpm_cb)(struct uart_port *);
};
#endif
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