| Vishal Bhoj | 82c8071 | 2015-12-15 21:13:33 +0530 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved. |
| 3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions are met: |
| 6 | * |
| 7 | * Redistributions of source code must retain the above copyright notice, this |
| 8 | * list of conditions and the following disclaimer. |
| 9 | * |
| 10 | * Redistributions in binary form must reproduce the above copyright notice, |
| 11 | * this list of conditions and the following disclaimer in the documentation |
| 12 | * and/or other materials provided with the distribution. |
| 13 | * |
| 14 | * Neither the name of ARM nor the names of its contributors may be used |
| 15 | * to endorse or promote products derived from this software without specific |
| 16 | * prior written permission. |
| 17 | * |
| 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| 22 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 23 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 24 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 25 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 26 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 27 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 28 | * POSSIBILITY OF SUCH DAMAGE. |
| 29 | */ |
| 30 | |
| 31 | #ifndef __PL011_H__ |
| 32 | #define __PL011_H__ |
| 33 | |
| 34 | /* PL011 Registers */ |
| 35 | #define UARTDR 0x000 |
| 36 | #define UARTRSR 0x004 |
| 37 | #define UARTECR 0x004 |
| 38 | #define UARTFR 0x018 |
| 39 | #define UARTILPR 0x020 |
| 40 | #define UARTIBRD 0x024 |
| 41 | #define UARTFBRD 0x028 |
| 42 | #define UARTLCR_H 0x02C |
| 43 | #define UARTCR 0x030 |
| 44 | #define UARTIFLS 0x034 |
| 45 | #define UARTIMSC 0x038 |
| 46 | #define UARTRIS 0x03C |
| 47 | #define UARTMIS 0x040 |
| 48 | #define UARTICR 0x044 |
| 49 | #define UARTDMACR 0x048 |
| 50 | |
| 51 | /* Data status bits */ |
| 52 | #define UART_DATA_ERROR_MASK 0x0F00 |
| 53 | |
| 54 | /* Status reg bits */ |
| 55 | #define UART_STATUS_ERROR_MASK 0x0F |
| 56 | |
| 57 | /* Flag reg bits */ |
| 58 | #define PL011_UARTFR_RI (1 << 8) /* Ring indicator */ |
| 59 | #define PL011_UARTFR_TXFE (1 << 7) /* Transmit FIFO empty */ |
| 60 | #define PL011_UARTFR_RXFF (1 << 6) /* Receive FIFO full */ |
| 61 | #define PL011_UARTFR_TXFF (1 << 5) /* Transmit FIFO full */ |
| 62 | #define PL011_UARTFR_RXFE (1 << 4) /* Receive FIFO empty */ |
| 63 | #define PL011_UARTFR_BUSY (1 << 3) /* UART busy */ |
| 64 | #define PL011_UARTFR_DCD (1 << 2) /* Data carrier detect */ |
| 65 | #define PL011_UARTFR_DSR (1 << 1) /* Data set ready */ |
| 66 | #define PL011_UARTFR_CTS (1 << 0) /* Clear to send */ |
| 67 | |
| 68 | #define PL011_UARTFR_TXFF_BIT 5 /* Transmit FIFO full bit in UARTFR register */ |
| 69 | #define PL011_UARTFR_RXFE_BIT 4 /* Receive FIFO empty bit in UARTFR register */ |
| 70 | |
| 71 | /* Control reg bits */ |
| 72 | #define PL011_UARTCR_CTSEN (1 << 15) /* CTS hardware flow control enable */ |
| 73 | #define PL011_UARTCR_RTSEN (1 << 14) /* RTS hardware flow control enable */ |
| 74 | #define PL011_UARTCR_RTS (1 << 11) /* Request to send */ |
| 75 | #define PL011_UARTCR_DTR (1 << 10) /* Data transmit ready. */ |
| 76 | #define PL011_UARTCR_RXE (1 << 9) /* Receive enable */ |
| 77 | #define PL011_UARTCR_TXE (1 << 8) /* Transmit enable */ |
| 78 | #define PL011_UARTCR_LBE (1 << 7) /* Loopback enable */ |
| 79 | #define PL011_UARTCR_UARTEN (1 << 0) /* UART Enable */ |
| 80 | |
| 81 | #if !defined(PL011_LINE_CONTROL) |
| 82 | /* FIFO Enabled / No Parity / 8 Data bit / One Stop Bit */ |
| 83 | #define PL011_LINE_CONTROL (PL011_UARTLCR_H_FEN | PL011_UARTLCR_H_WLEN_8) |
| 84 | #endif |
| 85 | |
| 86 | /* Line Control Register Bits */ |
| 87 | #define PL011_UARTLCR_H_SPS (1 << 7) /* Stick parity select */ |
| 88 | #define PL011_UARTLCR_H_WLEN_8 (3 << 5) |
| 89 | #define PL011_UARTLCR_H_WLEN_7 (2 << 5) |
| 90 | #define PL011_UARTLCR_H_WLEN_6 (1 << 5) |
| 91 | #define PL011_UARTLCR_H_WLEN_5 (0 << 5) |
| 92 | #define PL011_UARTLCR_H_FEN (1 << 4) /* FIFOs Enable */ |
| 93 | #define PL011_UARTLCR_H_STP2 (1 << 3) /* Two stop bits select */ |
| 94 | #define PL011_UARTLCR_H_EPS (1 << 2) /* Even parity select */ |
| 95 | #define PL011_UARTLCR_H_PEN (1 << 1) /* Parity Enable */ |
| 96 | #define PL011_UARTLCR_H_BRK (1 << 0) /* Send break */ |
| 97 | |
| 98 | #endif /* __PL011_H__ */ |