1 /* 2 * (C) Copyright 2008 Michal Simek <monstr@monstr.eu> 3 * Clean driver and add xilinx constant from header file 4 * 5 * (C) Copyright 2004 Atmark Techno, Inc. 6 * Yasushi SHOJI <yashi@atmark-techno.com> 7 * 8 * See file CREDITS for list of people who contributed to this 9 * project. 10 * 11 * This program is free software; you can redistribute it and/or 12 * modify it under the terms of the GNU General Public License as 13 * published by the Free Software Foundation; either version 2 of 14 * the License, or (at your option) any later version. 15 * 16 * This program is distributed in the hope that it will be useful, 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19 * GNU General Public License for more details. 20 * 21 * You should have received a copy of the GNU General Public License 22 * along with this program; if not, write to the Free Software 23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 24 * MA 02111-1307 USA 25 */ 26 27 #include <config.h> 28 #include <asm/io.h> 29 30 #define RX_FIFO_OFFSET 0 /* receive FIFO, read only */ 31 #define TX_FIFO_OFFSET 4 /* transmit FIFO, write only */ 32 #define STATUS_REG_OFFSET 8 /* status register, read only */ 33 34 #define SR_TX_FIFO_FULL 0x08 /* transmit FIFO full */ 35 #define SR_RX_FIFO_VALID_DATA 0x01 /* data in receive FIFO */ 36 #define SR_RX_FIFO_FULL 0x02 /* receive FIFO full */ 37 38 #define UARTLITE_STATUS (CONFIG_SERIAL_BASE + STATUS_REG_OFFSET) 39 #define UARTLITE_TX_FIFO (CONFIG_SERIAL_BASE + TX_FIFO_OFFSET) 40 #define UARTLITE_RX_FIFO (CONFIG_SERIAL_BASE + RX_FIFO_OFFSET) 41 42 int serial_init(void) 43 { 44 /* FIXME: Nothing for now. We should initialize fifo, etc */ 45 return 0; 46 } 47 48 void serial_setbrg(void) 49 { 50 /* FIXME: what's this for? */ 51 } 52 53 void serial_putc(const char c) 54 { 55 if (c == '\n') 56 serial_putc('\r'); 57 <<<<<<< .merge_file_kaofiJ 58 while (in_be32((void *)UARTLITE_STATUS) & SR_TX_FIFO_FULL); 59 out_be32((void *)UARTLITE_TX_FIFO, (unsigned char) (c & 0xff)); 60 ======= 61 while (in_be32((u32 *) UARTLITE_STATUS) & SR_TX_FIFO_FULL); 62 out_be32((u32 *) UARTLITE_TX_FIFO, (unsigned char) (c & 0xff)); 63 >>>>>>> .merge_file_zSz9BG 64 } 65 66 void serial_puts(const char * s) 67 { 68 while (*s) { 69 serial_putc(*s++); 70 } 71 } 72 73 int serial_getc(void) 74 { 75 <<<<<<< .merge_file_kaofiJ 76 while (!(in_be32((void *)UARTLITE_STATUS) & SR_RX_FIFO_VALID_DATA)); 77 return in_be32((void *)UARTLITE_RX_FIFO) & 0xff; 78 ======= 79 while (!(in_be32((u32 *) UARTLITE_STATUS) & SR_RX_FIFO_VALID_DATA)); 80 return in_be32((u32 *) UARTLITE_RX_FIFO) & 0xff; 81 >>>>>>> .merge_file_zSz9BG 82 } 83 84 int serial_tstc(void) 85 { 86 <<<<<<< .merge_file_kaofiJ 87 return (in_be32((void *)UARTLITE_STATUS) & SR_RX_FIFO_VALID_DATA); 88 ======= 89 return (in_be32((u32 *) UARTLITE_STATUS) & SR_RX_FIFO_VALID_DATA); 90 >>>>>>> .merge_file_zSz9BG 91 } 92