1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
/*
* Freescale STMP37XX/STMP378X Application UART driver
*
* Author: dmitry pervushin <dimka@embeddedalley.com>
*
* Copyright 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved.
* Copyright 2008 Embedded Alley Solutions, Inc All Rights Reserved.
*/
/*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
#ifndef __STMP_APPUART_H
#define __STMP_APPUART_H
#define RX_BUFFER_SIZE 4
#define TX_BUFFER_SIZE 0xFFF0
#include <mach/dma.h>
/* #define RX_CHAIN 2 */
struct stmp_appuart_port {
int keep_irq;
int irq[3];
void __iomem *mem;
u32 memsize;
int dma_rx, dma_tx;
struct clk *clk;
struct device *dev;
struct uart_port port;
unsigned tx_buffer_index;
struct stmp3xxx_dma_descriptor tx_desc;
#ifndef RX_CHAIN
struct stmp3xxx_dma_descriptor rx_desc;
#else
struct stmp3xxx_dma_descriptor rxd[RX_CHAIN];
struct stmp37xx_circ_dma_chain rx_chain;
#endif
u32 ctrl;
u8 running;
spinlock_t lock; /* protects irq handler */
};
#ifdef CONFIG_CPU_FREQ
static int stmp_appuart_updateclk(struct device *dev, void *clkdata);
static int stmp_appuart_notifier(struct notifier_block *self,
unsigned long phase, void *p);
#endif /* CONFIG_CPU_FREQ */
static int __init stmp_appuart_probe(struct platform_device *device);
static int stmp_appuart_remove(struct platform_device *device);
static int stmp_appuart_suspend(struct platform_device *device,
pm_message_t state);
static int stmp_appuart_resume(struct platform_device *device);
static int __init stmp_appuart_init(void);
static void __exit stmp_appuart_exit(void);
static int stmp_appuart_request_port(struct uart_port *u);
static void stmp_appuart_release_port(struct uart_port *u);
static int stmp_appuart_verify_port(struct uart_port *u,
struct serial_struct *);
static void stmp_appuart_config_port(struct uart_port *u, int flags);
static const char *stmp_appuart_type(struct uart_port *u);
static void stmp_appuart_settermios(struct uart_port *u,
struct ktermios *nw, struct ktermios *old);
static void stmp_appuart_shutdown(struct uart_port *u);
static int stmp_appuart_startup(struct uart_port *u);
static u32 stmp_appuart_get_mctrl(struct uart_port *u);
static void stmp_appuart_set_mctrl(struct uart_port *u, unsigned mctrl);
static void stmp_appuart_enable_ms(struct uart_port *port);
static void stmp_appuart_break_ctl(struct uart_port *port, int ctl);
static unsigned int stmp_appuart_tx_empty(struct uart_port *u);
static void stmp_appuart_stop_rx(struct uart_port *u);
static void stmp_appuart_start_tx(struct uart_port *u);
static void stmp_appuart_stop_tx(struct uart_port *u);
static int stmp_appuart_copy_tx(struct uart_port *u, u8 *target, int size);
#endif
|
