X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=drivers%2Fserial%2Fserial_xuartlite.c;h=988438e75471a37f2643328c910ff13b0fe753e5;hb=122d805fd4bd478bb83536348291d34ae648364b;hp=2dc6bd1bc85f849330e16d1826383e96f29fb96f;hpb=49a23e4a414ef9cfb92b1de193d7fa700fb55bf1;p=u-boot diff --git a/drivers/serial/serial_xuartlite.c b/drivers/serial/serial_xuartlite.c index 2dc6bd1bc8..988438e754 100644 --- a/drivers/serial/serial_xuartlite.c +++ b/drivers/serial/serial_xuartlite.c @@ -5,23 +5,7 @@ * (C) Copyright 2004 Atmark Techno, Inc. * Yasushi SHOJI * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA + * SPDX-License-Identifier: GPL-2.0+ */ #include @@ -34,13 +18,17 @@ #define SR_RX_FIFO_VALID_DATA 0x01 /* data in receive FIFO */ #define SR_RX_FIFO_FULL 0x02 /* receive FIFO full */ +#define ULITE_CONTROL_RST_TX 0x01 +#define ULITE_CONTROL_RST_RX 0x02 + struct uartlite { unsigned int rx_fifo; unsigned int tx_fifo; unsigned int status; + unsigned int control; }; -static const struct uartlite *userial_ports[4] = { +static struct uartlite *userial_ports[4] = { #ifdef XILINX_UARTLITE_BASEADDR [0] = (struct uartlite *)XILINX_UARTLITE_BASEADDR, #endif @@ -55,7 +43,7 @@ static const struct uartlite *userial_ports[4] = { #endif }; -void uartlite_serial_putc(const char c, const int port) +static void uartlite_serial_putc(const char c, const int port) { struct uartlite *regs = userial_ports[port]; @@ -67,13 +55,13 @@ void uartlite_serial_putc(const char c, const int port) out_be32(®s->tx_fifo, c & 0xff); } -void uartlite_serial_puts(const char *s, const int port) +static void uartlite_serial_puts(const char *s, const int port) { while (*s) uartlite_serial_putc(*s++, port); } -int uartlite_serial_getc(const int port) +static int uartlite_serial_getc(const int port) { struct uartlite *regs = userial_ports[port]; @@ -82,71 +70,53 @@ int uartlite_serial_getc(const int port) return in_be32(®s->rx_fifo) & 0xff; } -int uartlite_serial_tstc(const int port) +static int uartlite_serial_tstc(const int port) { struct uartlite *regs = userial_ports[port]; return in_be32(®s->status) & SR_RX_FIFO_VALID_DATA; } -#if !defined(CONFIG_SERIAL_MULTI) -int serial_init(void) -{ - /* FIXME: Nothing for now. We should initialize fifo, etc */ - return 0; -} - -void serial_setbrg(void) +static int uartlite_serial_init(const int port) { - /* FIXME: what's this for? */ -} - -void serial_putc(const char c) -{ - uartlite_serial_putc(c, 0); -} - -void serial_puts(const char *s) -{ - uartlite_serial_puts(s, 0); -} + struct uartlite *regs = userial_ports[port]; -int serial_getc(void) -{ - return uartlite_serial_getc(0); -} + if (regs) { + out_be32(®s->control, 0); + out_be32(®s->control, + ULITE_CONTROL_RST_RX | ULITE_CONTROL_RST_TX); + in_be32(®s->control); + return 0; + } -int serial_tstc(void) -{ - return uartlite_serial_tstc(0); + return -1; } -#endif -#if defined(CONFIG_SERIAL_MULTI) /* Multi serial device functions */ #define DECLARE_ESERIAL_FUNCTIONS(port) \ - int userial##port##_init(void) \ - { return(0); } \ - void userial##port##_setbrg(void) {} \ - int userial##port##_getc(void) \ + static int userial##port##_init(void) \ + { return uartlite_serial_init(port); } \ + static void userial##port##_setbrg(void) {} \ + static int userial##port##_getc(void) \ { return uartlite_serial_getc(port); } \ - int userial##port##_tstc(void) \ + static int userial##port##_tstc(void) \ { return uartlite_serial_tstc(port); } \ - void userial##port##_putc(const char c) \ + static void userial##port##_putc(const char c) \ { uartlite_serial_putc(c, port); } \ - void userial##port##_puts(const char *s) \ + static void userial##port##_puts(const char *s) \ { uartlite_serial_puts(s, port); } /* Serial device descriptor */ -#define INIT_ESERIAL_STRUCTURE(port, name) {\ - name,\ - userial##port##_init,\ - NULL,\ - userial##port##_setbrg,\ - userial##port##_getc,\ - userial##port##_tstc,\ - userial##port##_putc,\ - userial##port##_puts, } +#define INIT_ESERIAL_STRUCTURE(port, __name) { \ + .name = __name, \ + .start = userial##port##_init, \ + .stop = NULL, \ + .setbrg = userial##port##_setbrg, \ + .getc = userial##port##_getc, \ + .tstc = userial##port##_tstc, \ + .putc = userial##port##_putc, \ + .puts = userial##port##_puts, \ +} DECLARE_ESERIAL_FUNCTIONS(0); struct serial_device uartlite_serial0_device = @@ -163,17 +133,30 @@ struct serial_device uartlite_serial3_device = __weak struct serial_device *default_serial_console(void) { -# ifdef XILINX_UARTLITE_BASEADDR - return &uartlite_serial0_device; -# endif /* XILINX_UARTLITE_BASEADDR */ -# ifdef XILINX_UARTLITE_BASEADDR1 - return &uartlite_serial1_device; -# endif /* XILINX_UARTLITE_BASEADDR1 */ -# ifdef XILINX_UARTLITE_BASEADDR2 - return &uartlite_serial2_device; -# endif /* XILINX_UARTLITE_BASEADDR2 */ -# ifdef XILINX_UARTLITE_BASEADDR3 - return &uartlite_serial3_device; -# endif /* XILINX_UARTLITE_BASEADDR3 */ + if (userial_ports[0]) + return &uartlite_serial0_device; + if (userial_ports[1]) + return &uartlite_serial1_device; + if (userial_ports[2]) + return &uartlite_serial2_device; + if (userial_ports[3]) + return &uartlite_serial3_device; + + return NULL; +} + +void uartlite_serial_initialize(void) +{ +#ifdef XILINX_UARTLITE_BASEADDR + serial_register(&uartlite_serial0_device); +#endif /* XILINX_UARTLITE_BASEADDR */ +#ifdef XILINX_UARTLITE_BASEADDR1 + serial_register(&uartlite_serial1_device); +#endif /* XILINX_UARTLITE_BASEADDR1 */ +#ifdef XILINX_UARTLITE_BASEADDR2 + serial_register(&uartlite_serial2_device); +#endif /* XILINX_UARTLITE_BASEADDR2 */ +#ifdef XILINX_UARTLITE_BASEADDR3 + serial_register(&uartlite_serial3_device); +#endif /* XILINX_UARTLITE_BASEADDR3 */ } -#endif /* CONFIG_SERIAL_MULTI */