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mediatek
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drivers
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uart
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uart.h

uart.h 3.1 KB
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  1. /*
    2. 

  2.  * Copyright (c) 2020-2022, MediaTek Inc. All rights reserved.
    3. 

  3.  *
    4. 

  4.  * SPDX-License-Identifier: BSD-3-Clause
    5. 

  5.  */
    6. 

  6. 

  7. #ifndef UART_H
    8. 

  8. #define UART_H
    9. 

  9. 

  10. #include <platform_def.h>
    11. 

  11. 

  12. /* UART HW information */
    13. 

  13. #define HW_SUPPORT_UART_PORTS	2
    14. 

  14. #define DRV_SUPPORT_UART_PORTS	2
    15. 

  15. 

  16. /* console UART clock cg */
    17. 

  17. #define UART_CLOCK_GATE_SET		(INFRACFG_AO_BASE + 0x80)
    18. 

  18. #define UART_CLOCK_GATE_CLR		(INFRACFG_AO_BASE + 0x84)
    19. 

  19. #define UART_CLOCK_GATE_STA		(INFRACFG_AO_BASE + 0x90)
    20. 

  20. #define UART0_CLOCK_GATE_BIT		(1U<<22)
    21. 

  21. #define UART1_CLOCK_GATE_BIT		(1U<<23)
    22. 

  22. 

  23. /* UART registers */
    24. 

  24. #define UART_RBR(_baseaddr)			(_baseaddr + 0x0)
    25. 

  25. #define UART_THR(_baseaddr)			(_baseaddr + 0x0)
    26. 

  26. #define UART_IER(_baseaddr)			(_baseaddr + 0x4)
    27. 

  27. #define UART_IIR(_baseaddr)			(_baseaddr + 0x8)
    28. 

  28. #define UART_FCR(_baseaddr)			(_baseaddr + 0x8)
    29. 

  29. #define UART_LCR(_baseaddr)			(_baseaddr + 0xc)
    30. 

  30. #define UART_MCR(_baseaddr)			(_baseaddr + 0x10)
    31. 

  31. #define UART_LSR(_baseaddr)			(_baseaddr + 0x14)
    32. 

  32. #define UART_MSR(_baseaddr)			(_baseaddr + 0x18)
    33. 

  33. #define UART_SCR(_baseaddr)			(_baseaddr + 0x1c)
    34. 

  34. #define UART_DLL(_baseaddr)			(_baseaddr + 0x0)
    35. 

  35. #define UART_DLH(_baseaddr)			(_baseaddr + 0x4)
    36. 

  36. #define UART_EFR(_baseaddr)			(_baseaddr + 0x8)
    37. 

  37. #define UART_XON1(_baseaddr)			(_baseaddr + 0x10)
    38. 

  38. #define UART_XON2(_baseaddr)			(_baseaddr + 0x14)
    39. 

  39. #define UART_XOFF1(_baseaddr)			(_baseaddr + 0x18)
    40. 

  40. #define UART_XOFF2(_baseaddr)			(_baseaddr + 0x1c)
    41. 

  41. #define UART_AUTOBAUD(_baseaddr)		(_baseaddr + 0x20)
    42. 

  42. #define UART_HIGHSPEED(_baseaddr)		(_baseaddr + 0x24)
    43. 

  43. #define UART_SAMPLE_COUNT(_baseaddr)		(_baseaddr + 0x28)
    44. 

  44. #define UART_SAMPLE_POINT(_baseaddr)		(_baseaddr + 0x2c)
    45. 

  45. #define UART_AUTOBAUD_REG(_baseaddr)		(_baseaddr + 0x30)
    46. 

  46. #define UART_RATE_FIX_REG(_baseaddr)		(_baseaddr + 0x34)
    47. 

  47. #define UART_AUTO_BAUDSAMPLE(_baseaddr)		(_baseaddr + 0x38)
    48. 

  48. #define UART_GUARD(_baseaddr)			(_baseaddr + 0x3c)
    49. 

  49. #define UART_ESCAPE_DAT(_baseaddr)		(_baseaddr + 0x40)
    50. 

  50. #define UART_ESCAPE_EN(_baseaddr)		(_baseaddr + 0x44)
    51. 

  51. #define UART_SLEEP_EN(_baseaddr)		(_baseaddr + 0x48)
    52. 

  52. #define UART_DMA_EN(_baseaddr)			(_baseaddr + 0x4c)
    53. 

  53. #define UART_RXTRI_AD(_baseaddr)		(_baseaddr + 0x50)
    54. 

  54. #define UART_FRACDIV_L(_baseaddr)		(_baseaddr + 0x54)
    55. 

  55. #define UART_FRACDIV_M(_baseaddr)		(_baseaddr + 0x58)
    56. 

  56. #define UART_FCR_RD(_baseaddr)			(_baseaddr + 0x5C)
    57. 

  57. #define UART_USB_RX_SEL(_baseaddr)		(_baseaddr + 0xB0)
    58. 

  58. #define UART_SLEEP_REQ(_baseaddr)		(_baseaddr + 0xB4)
    59. 

  59. #define UART_SLEEP_ACK(_baseaddr)		(_baseaddr + 0xB8)
    60. 

  60. #define UART_SPM_SEL(_baseaddr)			(_baseaddr + 0xBC)
    61. 

  61. #define UART_LCR_DLAB				0x0080
    62. 

  62. #define UART_LCR_MODE_B				0x00bf
    63. 

  63. 

  64. enum uart_port_ID {
    65. 

  65. 	UART_PORT0 = 0,
    66. 

  66. 	UART_PORT1
    67. 

  67. };
    68. 

  68. 

  69. struct mt_uart_register {
    70. 

  70. 	uint32_t dll;
    71. 

  71. 	uint32_t dlh;
    72. 

  72. 	uint32_t ier;
    73. 

  73. 	uint32_t lcr;
    74. 

  74. 	uint32_t mcr;
    75. 

  75. 	uint32_t fcr;
    76. 

  76. 	uint32_t lsr;
    77. 

  77. 	uint32_t scr;
    78. 

  78. 	uint32_t efr;
    79. 

  79. 	uint32_t highspeed;
    80. 

  80. 	uint32_t sample_count;
    81. 

  81. 	uint32_t sample_point;
    82. 

  82. 	uint32_t fracdiv_l;
    83. 

  83. 	uint32_t fracdiv_m;
    84. 

  84. 	uint32_t escape_en;
    85. 

  85. 	uint32_t guard;
    86. 

  86. 	uint32_t rx_sel;
    87. 

  87. };
    88. 

  88. 

  89. struct mt_uart {
    90. 

  90. 	unsigned long base;
    91. 

  91. 	struct mt_uart_register registers;
    92. 

  92. };
    93. 

  93. 

  94. /* external API */
    95. 

  95. void mt_uart_save(void);
    96. 

  96. void mt_uart_restore(void);
    97. 

  97. void mt_console_uart_cg(int on);
    98. 

  98. uint32_t mt_console_uart_cg_status(void);
    99. 

  99. 

  100. #endif /* __UART_H__ */
    101.