2 * file: include/asm-blackfin/mach-bf548/bfin_serial_5xx.h
8 * blackfin serial driver head file
14 * bugs: enter bugs at http://blackfin.uclinux.org/
16 * this program is free software; you can redistribute it and/or modify
17 * it under the terms of the gnu general public license as published by
18 * the free software foundation; either version 2, or (at your option)
21 * this program is distributed in the hope that it will be useful,
22 * but without any warranty; without even the implied warranty of
23 * merchantability or fitness for a particular purpose. see the
24 * gnu general public license for more details.
26 * you should have received a copy of the gnu general public license
27 * along with this program; see the file copying.
28 * if not, write to the free software foundation,
29 * 59 temple place - suite 330, boston, ma 02111-1307, usa.
32 #include <linux/serial.h>
34 #include <asm/portmux.h>
36 #define UART_GET_CHAR(uart) bfin_read16(((uart)->port.membase + OFFSET_RBR))
37 #define UART_GET_DLL(uart) bfin_read16(((uart)->port.membase + OFFSET_DLL))
38 #define UART_GET_DLH(uart) bfin_read16(((uart)->port.membase + OFFSET_DLH))
39 #define UART_GET_IER(uart) bfin_read16(((uart)->port.membase + OFFSET_IER_SET))
40 #define UART_GET_LCR(uart) bfin_read16(((uart)->port.membase + OFFSET_LCR))
41 #define UART_GET_LSR(uart) bfin_read16(((uart)->port.membase + OFFSET_LSR))
42 #define UART_GET_GCTL(uart) bfin_read16(((uart)->port.membase + OFFSET_GCTL))
43 #define UART_GET_MSR(uart) bfin_read16(((uart)->port.membase + OFFSET_MSR))
44 #define UART_GET_MCR(uart) bfin_read16(((uart)->port.membase + OFFSET_MCR))
46 #define UART_PUT_CHAR(uart,v) bfin_write16(((uart)->port.membase + OFFSET_THR),v)
47 #define UART_PUT_DLL(uart,v) bfin_write16(((uart)->port.membase + OFFSET_DLL),v)
48 #define UART_SET_IER(uart,v) bfin_write16(((uart)->port.membase + OFFSET_IER_SET),v)
49 #define UART_CLEAR_IER(uart,v) bfin_write16(((uart)->port.membase + OFFSET_IER_CLEAR),v)
50 #define UART_PUT_DLH(uart,v) bfin_write16(((uart)->port.membase + OFFSET_DLH),v)
51 #define UART_PUT_LSR(uart,v) bfin_write16(((uart)->port.membase + OFFSET_LSR),v)
52 #define UART_PUT_LCR(uart,v) bfin_write16(((uart)->port.membase + OFFSET_LCR),v)
53 #define UART_CLEAR_LSR(uart) bfin_write16(((uart)->port.membase + OFFSET_LSR), -1)
54 #define UART_PUT_GCTL(uart,v) bfin_write16(((uart)->port.membase + OFFSET_GCTL),v)
55 #define UART_PUT_MCR(uart,v) bfin_write16(((uart)->port.membase + OFFSET_MCR),v)
56 #define UART_CLEAR_SCTS(uart) bfin_write16(((uart)->port.membase + OFFSET_MSR),SCTS)
58 #define UART_SET_DLAB(uart) /* MMRs not muxed on BF54x */
59 #define UART_CLEAR_DLAB(uart) /* MMRs not muxed on BF54x */
61 #define UART_GET_CTS(x) (UART_GET_MSR(x) & CTS)
62 #define UART_DISABLE_RTS(x) UART_PUT_MCR(x, UART_GET_MCR(x) & ~(ARTS|MRTS))
63 #define UART_ENABLE_RTS(x) UART_PUT_MCR(x, UART_GET_MCR(x) | MRTS | ARTS)
64 #define UART_ENABLE_INTS(x, v) UART_SET_IER(x, v)
65 #define UART_DISABLE_INTS(x) UART_CLEAR_IER(x, 0xF)
67 #if defined(CONFIG_BFIN_UART0_CTSRTS) || defined(CONFIG_BFIN_UART1_CTSRTS) || \
68 defined(CONFIG_BFIN_UART2_CTSRTS) || defined(CONFIG_BFIN_UART3_CTSRTS)
69 # define CONFIG_SERIAL_BFIN_HARD_CTSRTS
72 #define BFIN_UART_TX_FIFO_SIZE 2
75 * The pin configuration is different from schematic
77 struct bfin_serial_port {
78 struct uart_port port;
79 unsigned int old_status;
81 #ifdef CONFIG_SERIAL_BFIN_DMA
84 struct circ_buf rx_dma_buf;
85 struct timer_list rx_dma_timer;
87 unsigned int tx_dma_channel;
88 unsigned int rx_dma_channel;
89 struct work_struct tx_dma_workqueue;
91 #ifdef CONFIG_SERIAL_BFIN_HARD_CTSRTS
98 struct bfin_serial_res {
99 unsigned long uart_base_addr;
102 #ifdef CONFIG_SERIAL_BFIN_DMA
103 unsigned int uart_tx_dma_channel;
104 unsigned int uart_rx_dma_channel;
106 #ifdef CONFIG_SERIAL_BFIN_HARD_CTSRTS
112 struct bfin_serial_res bfin_serial_resource[] = {
113 #ifdef CONFIG_SERIAL_BFIN_UART0
118 #ifdef CONFIG_SERIAL_BFIN_DMA
122 #ifdef CONFIG_SERIAL_BFIN_HARD_CTSRTS
128 #ifdef CONFIG_SERIAL_BFIN_UART1
133 #ifdef CONFIG_SERIAL_BFIN_DMA
137 #ifdef CONFIG_SERIAL_BFIN_HARD_CTSRTS
143 #ifdef CONFIG_SERIAL_BFIN_UART2
148 #ifdef CONFIG_SERIAL_BFIN_DMA
152 #ifdef CONFIG_SERIAL_BFIN_HARD_CTSRTS
158 #ifdef CONFIG_SERIAL_BFIN_UART3
163 #ifdef CONFIG_SERIAL_BFIN_DMA
167 #ifdef CONFIG_SERIAL_BFIN_HARD_CTSRTS
175 #define DRIVER_NAME "bfin-uart"