LXR uboot/drivers/serial/serial_pl01x

   1/* SPDX-License-Identifier: GPL-2.0+ */
   2/*
   3 * (C) Copyright 2003, 2004
   4 * ARM Ltd.
   5 * Philippe Robin, <philippe.robin@arm.com>
   6 */
   7
   8/*
   9 * ARM PrimeCell UART's (PL010 & PL011)
  10 * ------------------------------------
  11 *
  12 *  Definitions common to both PL010 & PL011
  13 *
  14 */
  15
  16#ifndef __ASSEMBLY__
  17/*
  18 * We can use a combined structure for PL010 and PL011, because they overlap
  19 * only in common registers.
  20 */
  21struct pl01x_regs {
  22        u32     dr;             /* 0x00 Data register */
  23        u32     ecr;            /* 0x04 Error clear register (Write) */
  24        u32     pl010_lcrh;     /* 0x08 Line control register, high byte */
  25        u32     pl010_lcrm;     /* 0x0C Line control register, middle byte */
  26        u32     pl010_lcrl;     /* 0x10 Line control register, low byte */
  27        u32     pl010_cr;       /* 0x14 Control register */
  28        u32     fr;             /* 0x18 Flag register (Read only) */
  29#ifdef CONFIG_PL011_SERIAL_RLCR
  30        u32     pl011_rlcr;     /* 0x1c Receive line control register */
  31#else
  32        u32     reserved;
  33#endif
  34        u32     ilpr;           /* 0x20 IrDA low-power counter register */
  35        u32     pl011_ibrd;     /* 0x24 Integer baud rate register */
  36        u32     pl011_fbrd;     /* 0x28 Fractional baud rate register */
  37        u32     pl011_lcrh;     /* 0x2C Line control register */
  38        u32     pl011_cr;       /* 0x30 Control register */
  39};
  40
  41#ifdef CONFIG_DM_SERIAL
  42
  43int pl01x_serial_of_to_plat(struct udevice *dev);
  44int pl01x_serial_probe(struct udevice *dev);
  45
  46/* Needed for external pl01x_serial_ops drivers */
  47int pl01x_serial_putc(struct udevice *dev, const char ch);
  48int pl01x_serial_pending(struct udevice *dev, bool input);
  49int pl01x_serial_getc(struct udevice *dev);
  50int pl01x_serial_setbrg(struct udevice *dev, int baudrate);
  51
  52struct pl01x_priv {
  53        struct pl01x_regs *regs;
  54        enum pl01x_type type;
  55};
  56
  57#endif /* CONFIG_DM_SERIAL */
  58#endif /* !__ASSEMBLY__ */
  59
  60#define UART_PL01x_RSR_OE               0x08
  61#define UART_PL01x_RSR_BE               0x04
  62#define UART_PL01x_RSR_PE               0x02
  63#define UART_PL01x_RSR_FE               0x01
  64
  65#define UART_PL01x_FR_TXFE              0x80
  66#define UART_PL01x_FR_RXFF              0x40
  67#define UART_PL01x_FR_TXFF              0x20
  68#define UART_PL01x_FR_RXFE              0x10
  69#define UART_PL01x_FR_BUSY              0x08
  70#define UART_PL01x_FR_TMSK              (UART_PL01x_FR_TXFF + UART_PL01x_FR_BUSY)
  71
  72/*
  73 *  PL010 definitions
  74 *
  75 */
  76#define UART_PL010_CR_LPE               (1 << 7)
  77#define UART_PL010_CR_RTIE              (1 << 6)
  78#define UART_PL010_CR_TIE               (1 << 5)
  79#define UART_PL010_CR_RIE               (1 << 4)
  80#define UART_PL010_CR_MSIE              (1 << 3)
  81#define UART_PL010_CR_IIRLP             (1 << 2)
  82#define UART_PL010_CR_SIREN             (1 << 1)
  83#define UART_PL010_CR_UARTEN            (1 << 0)
  84
  85#define UART_PL010_LCRH_WLEN_8          (3 << 5)
  86#define UART_PL010_LCRH_WLEN_7          (2 << 5)
  87#define UART_PL010_LCRH_WLEN_6          (1 << 5)
  88#define UART_PL010_LCRH_WLEN_5          (0 << 5)
  89#define UART_PL010_LCRH_FEN             (1 << 4)
  90#define UART_PL010_LCRH_STP2            (1 << 3)
  91#define UART_PL010_LCRH_EPS             (1 << 2)
  92#define UART_PL010_LCRH_PEN             (1 << 1)
  93#define UART_PL010_LCRH_BRK             (1 << 0)
  94
  95
  96#define UART_PL010_BAUD_460800            1
  97#define UART_PL010_BAUD_230400            3
  98#define UART_PL010_BAUD_115200            7
  99#define UART_PL010_BAUD_57600             15
 100#define UART_PL010_BAUD_38400             23
 101#define UART_PL010_BAUD_19200             47
 102#define UART_PL010_BAUD_14400             63
 103#define UART_PL010_BAUD_9600              95
 104#define UART_PL010_BAUD_4800              191
 105#define UART_PL010_BAUD_2400              383
 106#define UART_PL010_BAUD_1200              767
 107/*
 108 *  PL011 definitions
 109 *
 110 */
 111#define UART_PL011_LCRH_SPS             (1 << 7)
 112#define UART_PL011_LCRH_WLEN_8          (3 << 5)
 113#define UART_PL011_LCRH_WLEN_7          (2 << 5)
 114#define UART_PL011_LCRH_WLEN_6          (1 << 5)
 115#define UART_PL011_LCRH_WLEN_5          (0 << 5)
 116#define UART_PL011_LCRH_FEN             (1 << 4)
 117#define UART_PL011_LCRH_STP2            (1 << 3)
 118#define UART_PL011_LCRH_EPS             (1 << 2)
 119#define UART_PL011_LCRH_PEN             (1 << 1)
 120#define UART_PL011_LCRH_BRK             (1 << 0)
 121
 122#define UART_PL011_CR_CTSEN             (1 << 15)
 123#define UART_PL011_CR_RTSEN             (1 << 14)
 124#define UART_PL011_CR_OUT2              (1 << 13)
 125#define UART_PL011_CR_OUT1              (1 << 12)
 126#define UART_PL011_CR_RTS               (1 << 11)
 127#define UART_PL011_CR_DTR               (1 << 10)
 128#define UART_PL011_CR_RXE               (1 << 9)
 129#define UART_PL011_CR_TXE               (1 << 8)
 130#define UART_PL011_CR_LPE               (1 << 7)
 131#define UART_PL011_CR_IIRLP             (1 << 2)
 132#define UART_PL011_CR_SIREN             (1 << 1)
 133#define UART_PL011_CR_UARTEN            (1 << 0)
 134
 135#define UART_PL011_IMSC_OEIM            (1 << 10)
 136#define UART_PL011_IMSC_BEIM            (1 << 9)
 137#define UART_PL011_IMSC_PEIM            (1 << 8)
 138#define UART_PL011_IMSC_FEIM            (1 << 7)
 139#define UART_PL011_IMSC_RTIM            (1 << 6)
 140#define UART_PL011_IMSC_TXIM            (1 << 5)
 141#define UART_PL011_IMSC_RXIM            (1 << 4)
 142#define UART_PL011_IMSC_DSRMIM          (1 << 3)
 143#define UART_PL011_IMSC_DCDMIM          (1 << 2)
 144#define UART_PL011_IMSC_CTSMIM          (1 << 1)
 145#define UART_PL011_IMSC_RIMIM           (1 << 0)
 146