dc0996af4e
UART drivers. - uart_dev_mtk.[ch] are the old-style Mediatek/Ralink-specific UART driver as also found in sys/mips/rt305x/uart_dev_rt305x.c, with minor improvements and FDT attachment enabled for the appropriate SoCs. - uart_dev_mtk_ns8250.c is the new-style ns16550a-compatible UART driver found in newer Mediatek SoCs. It uses the uart_dev_ns8250.c driver indirectly and is basically just a wrapper around it and only overrides its probe method. The reason I am not using the uart_dev_ns8250.c driver directly is because I have some code that does UART clock detection before initializing the UART, so that we don't need to hard-code the UART clock frequency in the dts files for each board. Approved by: adrian (mentor) Sponsored by: Smartcom - Bulgaria AD Differential Revision: https://reviews.freebsd.org/D5840
127 lines
4.1 KiB
C
127 lines
4.1 KiB
C
/*-
|
|
* Copyright (c) 2010 Aleksandr Rybalko.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or
|
|
* without modification, are permitted provided that the following
|
|
* conditions are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above
|
|
* copyright notice, this list of conditions and the following
|
|
* disclaimer in the documentation and/or other materials provided
|
|
* with the distribution.
|
|
* 3. The names of the authors may not be used to endorse or promote
|
|
* products derived from this software without specific prior
|
|
* written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY
|
|
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
|
|
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
|
|
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
|
|
* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
|
|
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
|
|
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
|
|
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
|
|
* OF SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
#ifndef _MTKUART_H
|
|
#define _MTKUART_H
|
|
|
|
#undef uart_getreg
|
|
#undef uart_setreg
|
|
#define uart_getreg(bas, reg) \
|
|
bus_space_read_4((bas)->bst, (bas)->bsh, reg)
|
|
#define uart_setreg(bas, reg, value) \
|
|
bus_space_write_4((bas)->bst, (bas)->bsh, reg, value)
|
|
|
|
/* UART registers */
|
|
#define UART_RX_REG 0x00
|
|
#define UART_TX_REG 0x04
|
|
|
|
#define UART_IER_REG 0x08
|
|
#define UART_IER_EDSSI (1<<3) /* Only full UART */
|
|
#define UART_IER_ELSI (1<<2)
|
|
#define UART_IER_ETBEI (1<<1)
|
|
#define UART_IER_ERBFI (1<<0)
|
|
|
|
#define UART_IIR_REG 0x0c
|
|
#define UART_IIR_RXFIFO (1<<7)
|
|
#define UART_IIR_TXFIFO (1<<6)
|
|
#define UART_IIR_ID_MST 0
|
|
#define UART_IIR_ID_THRE 1
|
|
#define UART_IIR_ID_DR 2
|
|
#define UART_IIR_ID_LINESTATUS 3
|
|
#define UART_IIR_ID_DR2 6
|
|
#define UART_IIR_ID_SHIFT 1
|
|
#define UART_IIR_ID_MASK 0x0000000e
|
|
#define UART_IIR_INTP (1<<0)
|
|
|
|
#define UART_FCR_REG 0x10
|
|
#define UART_FCR_RXTGR_1 (0<<6)
|
|
#define UART_FCR_RXTGR_4 (1<<6)
|
|
#define UART_FCR_RXTGR_8 (2<<6)
|
|
#define UART_FCR_RXTGR_12 (3<<6)
|
|
#define UART_FCR_TXTGR_1 (0<<4)
|
|
#define UART_FCR_TXTGR_4 (1<<4)
|
|
#define UART_FCR_TXTGR_8 (2<<4)
|
|
#define UART_FCR_TXTGR_12 (3<<4)
|
|
#define UART_FCR_DMA (1<<3)
|
|
#define UART_FCR_TXRST (1<<2)
|
|
#define UART_FCR_RXRST (1<<1)
|
|
#define UART_FCR_FIFOEN (1<<0)
|
|
|
|
#define UART_LCR_REG 0x14
|
|
#define UART_LCR_DLAB (1<<7)
|
|
#define UART_LCR_BRK (1<<6)
|
|
#define UART_LCR_FPAR (1<<5)
|
|
#define UART_LCR_EVEN (1<<4)
|
|
#define UART_LCR_PEN (1<<3)
|
|
#define UART_LCR_STB_15 (1<<2)
|
|
#define UART_LCR_5B 0
|
|
#define UART_LCR_6B 1
|
|
#define UART_LCR_7B 2
|
|
#define UART_LCR_8B 3
|
|
|
|
#define UART_MCR_REG 0x18
|
|
#define UART_MCR_LOOP (1<<4)
|
|
#define UART_MCR_OUT2_L (1<<3) /* Only full UART */
|
|
#define UART_MCR_OUT1_L (1<<2) /* Only full UART */
|
|
#define UART_MCR_RTS_L (1<<1) /* Only full UART */
|
|
#define UART_MCR_DTR_L (1<<0) /* Only full UART */
|
|
|
|
#define UART_LSR_REG 0x1c
|
|
#define UART_LSR_ERINF (1<<7)
|
|
#define UART_LSR_TEMT (1<<6)
|
|
#define UART_LSR_THRE (1<<5)
|
|
#define UART_LSR_BI (1<<4)
|
|
#define UART_LSR_FE (1<<3)
|
|
#define UART_LSR_PE (1<<2)
|
|
#define UART_LSR_OE (1<<1)
|
|
#define UART_LSR_DR (1<<0)
|
|
|
|
#define UART_MSR_REG 0x20 /* Only full UART */
|
|
#define UART_MSR_DCD (1<<7) /* Only full UART */
|
|
#define UART_MSR_RI (1<<6) /* Only full UART */
|
|
#define UART_MSR_DSR (1<<5) /* Only full UART */
|
|
#define UART_MSR_CTS (1<<4) /* Only full UART */
|
|
#define UART_MSR_DDCD (1<<3) /* Only full UART */
|
|
#define UART_MSR_TERI (1<<2) /* Only full UART */
|
|
#define UART_MSR_DDSR (1<<1) /* Only full UART */
|
|
#define UART_MSR_DCTS (1<<0) /* Only full UART */
|
|
|
|
#define UART_CDDL_REG 0x28
|
|
#define UART_CDDLL_REG 0x2c
|
|
#define UART_CDDLH_REG 0x30
|
|
|
|
#define UART_IFCTL_REG 0x34
|
|
#define UART_IFCTL_IFCTL (1<<0)
|
|
|
|
int uart_cnattach(void);
|
|
#endif /* _MTKUART_H */
|