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99edb3d1 | 1 | /* |
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2 | * Driver for Samsung SoC onboard UARTs. |
3 | * | |
ccae941e | 4 | * Ben Dooks, Copyright (c) 2003-2008 Simtec Electronics |
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5 | * http://armlinux.simtec.co.uk/ |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | ||
12 | struct s3c24xx_uart_info { | |
13 | char *name; | |
14 | unsigned int type; | |
15 | unsigned int fifosize; | |
16 | unsigned long rx_fifomask; | |
17 | unsigned long rx_fifoshift; | |
18 | unsigned long rx_fifofull; | |
19 | unsigned long tx_fifomask; | |
20 | unsigned long tx_fifoshift; | |
21 | unsigned long tx_fifofull; | |
22 | ||
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23 | /* uart port features */ |
24 | ||
25 | unsigned int has_divslot:1; | |
26 | ||
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27 | /* clock source control */ |
28 | ||
29 | int (*get_clksrc)(struct uart_port *, struct s3c24xx_uart_clksrc *clk); | |
30 | int (*set_clksrc)(struct uart_port *, struct s3c24xx_uart_clksrc *clk); | |
31 | ||
32 | /* uart controls */ | |
33 | int (*reset_port)(struct uart_port *, struct s3c2410_uartcfg *); | |
34 | }; | |
35 | ||
36 | struct s3c24xx_uart_port { | |
37 | unsigned char rx_claimed; | |
38 | unsigned char tx_claimed; | |
30555476 BD |
39 | unsigned int pm_level; |
40 | unsigned long baudclk_rate; | |
b497549a | 41 | |
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42 | unsigned int rx_irq; |
43 | unsigned int tx_irq; | |
44 | ||
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45 | struct s3c24xx_uart_info *info; |
46 | struct s3c24xx_uart_clksrc *clksrc; | |
47 | struct clk *clk; | |
48 | struct clk *baudclk; | |
49 | struct uart_port port; | |
30555476 | 50 | |
4d84e970 TA |
51 | /* reference to platform data */ |
52 | struct s3c2410_uartcfg *cfg; | |
53 | ||
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54 | #ifdef CONFIG_CPU_FREQ |
55 | struct notifier_block freq_transition; | |
56 | #endif | |
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57 | }; |
58 | ||
59 | /* conversion functions */ | |
60 | ||
61 | #define s3c24xx_dev_to_port(__dev) (struct uart_port *)dev_get_drvdata(__dev) | |
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62 | |
63 | /* register access controls */ | |
64 | ||
65 | #define portaddr(port, reg) ((port)->membase + (reg)) | |
88bb4ea1 | 66 | #define portaddrl(port, reg) ((unsigned long *)((port)->membase + (reg))) |
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67 | |
68 | #define rd_regb(port, reg) (__raw_readb(portaddr(port, reg))) | |
69 | #define rd_regl(port, reg) (__raw_readl(portaddr(port, reg))) | |
70 | ||
71 | #define wr_regb(port, reg, val) __raw_writeb(val, portaddr(port, reg)) | |
72 | #define wr_regl(port, reg, val) __raw_writel(val, portaddr(port, reg)) | |
73 | ||
74 | extern int s3c24xx_serial_probe(struct platform_device *dev, | |
75 | struct s3c24xx_uart_info *uart); | |
76 | ||
90ceb964 | 77 | extern int __devexit s3c24xx_serial_remove(struct platform_device *dev); |
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78 | |
79 | extern int s3c24xx_serial_initconsole(struct platform_driver *drv, | |
51fe5222 | 80 | struct s3c24xx_uart_info **uart); |
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81 | |
82 | extern int s3c24xx_serial_init(struct platform_driver *drv, | |
83 | struct s3c24xx_uart_info *info); | |
84 | ||
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85 | #ifdef CONFIG_SERIAL_SAMSUNG_DEBUG |
86 | ||
87 | extern void printascii(const char *); | |
88 | ||
89 | static void dbg(const char *fmt, ...) | |
90 | { | |
91 | va_list va; | |
92 | char buff[256]; | |
93 | ||
94 | va_start(va, fmt); | |
95 | vsprintf(buff, fmt, va); | |
96 | va_end(va); | |
97 | ||
98 | printascii(buff); | |
99 | } | |
100 | ||
101 | #else | |
102 | #define dbg(x...) do { } while (0) | |
103 | #endif |