drivers/serial/serial_pl01x_internal.h

   1 /*
   2  * (C) Copyright 2003, 2004
   3  * ARM Ltd.
   4  * Philippe Robin, <philippe.robin@arm.com>
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 /*
  10  * ARM PrimeCell UART's (PL010 & PL011)
  11  * ------------------------------------
  12  *
  13  *  Definitions common to both PL010 & PL011
  14  *
  15  */
  16
  17 #ifndef __ASSEMBLY__
  18 /*
  19  * We can use a combined structure for PL010 and PL011, because they overlap
  20  * only in common registers.
  21  */
  22 struct pl01x_regs {
  23         u32     dr;             /* 0x00 Data register */
  24         u32     ecr;            /* 0x04 Error clear register (Write) */
  25         u32     pl010_lcrh;     /* 0x08 Line control register, high byte */
  26         u32     pl010_lcrm;     /* 0x0C Line control register, middle byte */
  27         u32     pl010_lcrl;     /* 0x10 Line control register, low byte */
  28         u32     pl010_cr;       /* 0x14 Control register */
  29         u32     fr;             /* 0x18 Flag register (Read only) */
  30 #ifdef CONFIG_PL011_SERIAL_RLCR
  31         u32     pl011_rlcr;     /* 0x1c Receive line control register */
  32 #else
  33         u32     reserved;
  34 #endif
  35         u32     ilpr;           /* 0x20 IrDA low-power counter register */
  36         u32     pl011_ibrd;     /* 0x24 Integer baud rate register */
  37         u32     pl011_fbrd;     /* 0x28 Fractional baud rate register */
  38         u32     pl011_lcrh;     /* 0x2C Line control register */
  39         u32     pl011_cr;       /* 0x30 Control register */
  40 };
  41 #endif
  42
  43 #define UART_PL01x_RSR_OE               0x08
  44 #define UART_PL01x_RSR_BE               0x04
  45 #define UART_PL01x_RSR_PE               0x02
  46 #define UART_PL01x_RSR_FE               0x01
  47
  48 #define UART_PL01x_FR_TXFE              0x80
  49 #define UART_PL01x_FR_RXFF              0x40
  50 #define UART_PL01x_FR_TXFF              0x20
  51 #define UART_PL01x_FR_RXFE              0x10
  52 #define UART_PL01x_FR_BUSY              0x08
  53 #define UART_PL01x_FR_TMSK              (UART_PL01x_FR_TXFF + UART_PL01x_FR_BUSY)
  54
  55 /*
  56  *  PL010 definitions
  57  *
  58  */
  59 #define UART_PL010_CR_LPE               (1 << 7)
  60 #define UART_PL010_CR_RTIE              (1 << 6)
  61 #define UART_PL010_CR_TIE               (1 << 5)
  62 #define UART_PL010_CR_RIE               (1 << 4)
  63 #define UART_PL010_CR_MSIE              (1 << 3)
  64 #define UART_PL010_CR_IIRLP             (1 << 2)
  65 #define UART_PL010_CR_SIREN             (1 << 1)
  66 #define UART_PL010_CR_UARTEN            (1 << 0)
  67
  68 #define UART_PL010_LCRH_WLEN_8          (3 << 5)
  69 #define UART_PL010_LCRH_WLEN_7          (2 << 5)
  70 #define UART_PL010_LCRH_WLEN_6          (1 << 5)
  71 #define UART_PL010_LCRH_WLEN_5          (0 << 5)
  72 #define UART_PL010_LCRH_FEN             (1 << 4)
  73 #define UART_PL010_LCRH_STP2            (1 << 3)
  74 #define UART_PL010_LCRH_EPS             (1 << 2)
  75 #define UART_PL010_LCRH_PEN             (1 << 1)
  76 #define UART_PL010_LCRH_BRK             (1 << 0)
  77
  78
  79 #define UART_PL010_BAUD_460800            1
  80 #define UART_PL010_BAUD_230400            3
  81 #define UART_PL010_BAUD_115200            7
  82 #define UART_PL010_BAUD_57600             15
  83 #define UART_PL010_BAUD_38400             23
  84 #define UART_PL010_BAUD_19200             47
  85 #define UART_PL010_BAUD_14400             63
  86 #define UART_PL010_BAUD_9600              95
  87 #define UART_PL010_BAUD_4800              191
  88 #define UART_PL010_BAUD_2400              383
  89 #define UART_PL010_BAUD_1200              767
  90 /*
  91  *  PL011 definitions
  92  *
  93  */
  94 #define UART_PL011_LCRH_SPS             (1 << 7)
  95 #define UART_PL011_LCRH_WLEN_8          (3 << 5)
  96 #define UART_PL011_LCRH_WLEN_7          (2 << 5)
  97 #define UART_PL011_LCRH_WLEN_6          (1 << 5)
  98 #define UART_PL011_LCRH_WLEN_5          (0 << 5)
  99 #define UART_PL011_LCRH_FEN             (1 << 4)
 100 #define UART_PL011_LCRH_STP2            (1 << 3)
 101 #define UART_PL011_LCRH_EPS             (1 << 2)
 102 #define UART_PL011_LCRH_PEN             (1 << 1)
 103 #define UART_PL011_LCRH_BRK             (1 << 0)
 104
 105 #define UART_PL011_CR_CTSEN             (1 << 15)
 106 #define UART_PL011_CR_RTSEN             (1 << 14)
 107 #define UART_PL011_CR_OUT2              (1 << 13)
 108 #define UART_PL011_CR_OUT1              (1 << 12)
 109 #define UART_PL011_CR_RTS               (1 << 11)
 110 #define UART_PL011_CR_DTR               (1 << 10)
 111 #define UART_PL011_CR_RXE               (1 << 9)
 112 #define UART_PL011_CR_TXE               (1 << 8)
 113 #define UART_PL011_CR_LPE               (1 << 7)
 114 #define UART_PL011_CR_IIRLP             (1 << 2)
 115 #define UART_PL011_CR_SIREN             (1 << 1)
 116 #define UART_PL011_CR_UARTEN            (1 << 0)
 117
 118 #define UART_PL011_IMSC_OEIM            (1 << 10)
 119 #define UART_PL011_IMSC_BEIM            (1 << 9)
 120 #define UART_PL011_IMSC_PEIM            (1 << 8)
 121 #define UART_PL011_IMSC_FEIM            (1 << 7)
 122 #define UART_PL011_IMSC_RTIM            (1 << 6)
 123 #define UART_PL011_IMSC_TXIM            (1 << 5)
 124 #define UART_PL011_IMSC_RXIM            (1 << 4)
 125 #define UART_PL011_IMSC_DSRMIM          (1 << 3)
 126 #define UART_PL011_IMSC_DCDMIM          (1 << 2)
 127 #define UART_PL011_IMSC_CTSMIM          (1 << 1)
 128 #define UART_PL011_IMSC_RIMIM           (1 << 0)