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| System | : | Linux MiraNet 3.0.0-14-generic-pae #23-Ubuntu SMP Mon Nov 21 22:07:10 UTC 2011 i686 |
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/
usr/
src/
linux-headers-3.0.0-14/
arch/
arm/
plat-omap/
include/
plat/
- drwxr-xr-x
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Viewing file:  omap-serial.h (2.72 KB) -rw-r--r--Select action/file-type:  ( +) |  ( +) |  ( +) | Code ( +) | Session ( +) |  ( +) | SDB ( +) |  ( +) |  ( +) |  ( +) |  ( +) |  ( +) |
/*
* Driver for OMAP-UART controller.
* Based on drivers/serial/8250.c
*
* Copyright (C) 2010 Texas Instruments.
*
* Authors:
* Govindraj R <govindraj.raja@ti.com>
* Thara Gopinath <thara@ti.com>
*
* 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.
*/
#ifndef __OMAP_SERIAL_H__
#define __OMAP_SERIAL_H__
#include <linux/serial_core.h>
#include <linux/platform_device.h>
#include <plat/mux.h>
#define DRIVER_NAME "omap_uart"
/*
* Use tty device name as ttyO, [O -> OMAP]
* in bootargs we specify as console=ttyO0 if uart1
* is used as console uart.
*/
#define OMAP_SERIAL_NAME "ttyO"
#define OMAP_MODE13X_SPEED 230400
/* WER = 0x7F
* Enable module level wakeup in WER reg
*/
#define OMAP_UART_WER_MOD_WKUP 0X7F
/* Enable XON/XOFF flow control on output */
#define OMAP_UART_SW_TX 0x04
/* Enable XON/XOFF flow control on input */
#define OMAP_UART_SW_RX 0x04
#define OMAP_UART_SYSC_RESET 0X07
#define OMAP_UART_TCR_TRIG 0X0F
#define OMAP_UART_SW_CLR 0XF0
#define OMAP_UART_FIFO_CLR 0X06
#define OMAP_UART_DMA_CH_FREE -1
#define RX_TIMEOUT (3 * HZ)
#define OMAP_MAX_HSUART_PORTS 4
#define MSR_SAVE_FLAGS UART_MSR_ANY_DELTA
struct omap_uart_port_info {
bool dma_enabled; /* To specify DMA Mode */
unsigned int uartclk; /* UART clock rate */
void __iomem *membase; /* ioremap cookie or NULL */
resource_size_t mapbase; /* resource base */
unsigned long irqflags; /* request_irq flags */
upf_t flags; /* UPF_* flags */
};
struct uart_omap_dma {
u8 uart_dma_tx;
u8 uart_dma_rx;
int rx_dma_channel;
int tx_dma_channel;
dma_addr_t rx_buf_dma_phys;
dma_addr_t tx_buf_dma_phys;
unsigned int uart_base;
/*
* Buffer for rx dma.It is not required for tx because the buffer
* comes from port structure.
*/
unsigned char *rx_buf;
unsigned int prev_rx_dma_pos;
int tx_buf_size;
int tx_dma_used;
int rx_dma_used;
spinlock_t tx_lock;
spinlock_t rx_lock;
/* timer to poll activity on rx dma */
struct timer_list rx_timer;
int rx_buf_size;
int rx_timeout;
};
struct uart_omap_port {
struct uart_port port;
struct uart_omap_dma uart_dma;
struct platform_device *pdev;
unsigned char ier;
unsigned char lcr;
unsigned char mcr;
unsigned char fcr;
unsigned char efr;
int use_dma;
/*
* Some bits in registers are cleared on a read, so they must
* be saved whenever the register is read but the bits will not
* be immediately processed.
*/
unsigned int lsr_break_flag;
unsigned char msr_saved_flags;
char name[20];
unsigned long port_activity;
};
#endif /* __OMAP_SERIAL_H__ */
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