LXR uboot/drivers/serial/serial_pl01x

   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 */
  22struct 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)
 129