/drivers/tty/serial/samsung.h

https://bitbucket.org/cyanogenmod/android_kernel_asus_tf300t · C Header · 100 lines · 59 code · 26 blank · 15 comment · 1 complexity · c46c3458fb3abb9dd251eb399f1240bd MD5 · raw file 

    

  1. /*
    2. 

  2.  * Driver for Samsung SoC onboard UARTs.
    3. 

  3.  *
    4. 

  4.  * Ben Dooks, Copyright (c) 2003-2008 Simtec Electronics
    5. 

  5.  *	http://armlinux.simtec.co.uk/
    6. 

  6.  *
    7. 

  7.  * This program is free software; you can redistribute it and/or modify
    8. 

  8.  * it under the terms of the GNU General Public License version 2 as
    9. 

  9.  * published by the Free Software Foundation.
    10. 

  10. */
    11. 

  11. 

  12. struct s3c24xx_uart_info {
    13. 

  13. 	char			*name;
    14. 

  14. 	unsigned int		type;
    15. 

  15. 	unsigned int		fifosize;
    16. 

  16. 	unsigned long		rx_fifomask;
    17. 

  17. 	unsigned long		rx_fifoshift;
    18. 

  18. 	unsigned long		rx_fifofull;
    19. 

  19. 	unsigned long		tx_fifomask;
    20. 

  20. 	unsigned long		tx_fifoshift;
    21. 

  21. 	unsigned long		tx_fifofull;
    22. 

  22. 

  23. 	/* uart port features */
    24. 

  24. 

  25. 	unsigned int		has_divslot:1;
    26. 

  26. 

  27. 	/* clock source control */
    28. 

  28. 

  29. 	int (*get_clksrc)(struct uart_port *, struct s3c24xx_uart_clksrc *clk);
    30. 

  30. 	int (*set_clksrc)(struct uart_port *, struct s3c24xx_uart_clksrc *clk);
    31. 

  31. 

  32. 	/* uart controls */
    33. 

  33. 	int (*reset_port)(struct uart_port *, struct s3c2410_uartcfg *);
    34. 

  34. };
    35. 

  35. 

  36. struct s3c24xx_uart_port {
    37. 

  37. 	unsigned char			rx_claimed;
    38. 

  38. 	unsigned char			tx_claimed;
    39. 

  39. 	unsigned int			pm_level;
    40. 

  40. 	unsigned long			baudclk_rate;
    41. 

  41. 

  42. 	unsigned int			rx_irq;
    43. 

  43. 	unsigned int			tx_irq;
    44. 

  44. 

  45. 	struct s3c24xx_uart_info	*info;
    46. 

  46. 	struct s3c24xx_uart_clksrc	*clksrc;
    47. 

  47. 	struct clk			*clk;
    48. 

  48. 	struct clk			*baudclk;
    49. 

  49. 	struct uart_port		port;
    50. 

  50. 

  51. #ifdef CONFIG_CPU_FREQ
    52. 

  52. 	struct notifier_block		freq_transition;
    53. 

  53. #endif
    54. 

  54. };
    55. 

  55. 

  56. /* conversion functions */
    57. 

  57. 

  58. #define s3c24xx_dev_to_port(__dev) (struct uart_port *)dev_get_drvdata(__dev)
    59. 

  59. #define s3c24xx_dev_to_cfg(__dev) (struct s3c2410_uartcfg *)((__dev)->platform_data)
    60. 

  60. 

  61. /* register access controls */
    62. 

  62. 

  63. #define portaddr(port, reg) ((port)->membase + (reg))
    64. 

  64. 

  65. #define rd_regb(port, reg) (__raw_readb(portaddr(port, reg)))
    66. 

  66. #define rd_regl(port, reg) (__raw_readl(portaddr(port, reg)))
    67. 

  67. 

  68. #define wr_regb(port, reg, val) __raw_writeb(val, portaddr(port, reg))
    69. 

  69. #define wr_regl(port, reg, val) __raw_writel(val, portaddr(port, reg))
    70. 

  70. 

  71. extern int s3c24xx_serial_probe(struct platform_device *dev,
    72. 

  72. 				struct s3c24xx_uart_info *uart);
    73. 

  73. 

  74. extern int __devexit s3c24xx_serial_remove(struct platform_device *dev);
    75. 

  75. 

  76. extern int s3c24xx_serial_initconsole(struct platform_driver *drv,
    77. 

  77. 				      struct s3c24xx_uart_info **uart);
    78. 

  78. 

  79. extern int s3c24xx_serial_init(struct platform_driver *drv,
    80. 

  80. 			       struct s3c24xx_uart_info *info);
    81. 

  81. 

  82. #ifdef CONFIG_SERIAL_SAMSUNG_DEBUG
    83. 

  83. 

  84. extern void printascii(const char *);
    85. 

  85. 

  86. static void dbg(const char *fmt, ...)
    87. 

  87. {
    88. 

  88. 	va_list va;
    89. 

  89. 	char buff[256];
    90. 

  90. 

  91. 	va_start(va, fmt);
    92. 

  92. 	vsprintf(buff, fmt, va);
    93. 

  93. 	va_end(va);
    94. 

  94. 

  95. 	printascii(buff);
    96. 

  96. }
    97. 

  97. 

  98. #else
    99. 

  99. #define dbg(x...) do { } while (0)
    100. 

  100. #endif
    101.