2 * Blackfin Infra-red Driver
4 * Copyright 2006-2008 Analog Devices Inc.
6 * Enter bugs at http://blackfin.uclinux.org/
8 * Licensed under the GPL-2 or later.
12 #include <linux/serial.h>
14 #include <asm/portmux.h>
16 #define SIR_UART_GET_CHAR(port) bfin_read16((port)->membase + OFFSET_RBR)
17 #define SIR_UART_GET_DLL(port) bfin_read16((port)->membase + OFFSET_DLL)
18 #define SIR_UART_GET_IER(port) bfin_read16((port)->membase + OFFSET_IER)
19 #define SIR_UART_GET_DLH(port) bfin_read16((port)->membase + OFFSET_DLH)
20 #define SIR_UART_GET_IIR(port) bfin_read16((port)->membase + OFFSET_IIR)
21 #define SIR_UART_GET_LCR(port) bfin_read16((port)->membase + OFFSET_LCR)
22 #define SIR_UART_GET_GCTL(port) bfin_read16((port)->membase + OFFSET_GCTL)
24 #define SIR_UART_PUT_CHAR(port, v) bfin_write16(((port)->membase + OFFSET_THR), v)
25 #define SIR_UART_PUT_DLL(port, v) bfin_write16(((port)->membase + OFFSET_DLL), v)
26 #define SIR_UART_PUT_IER(port, v) bfin_write16(((port)->membase + OFFSET_IER), v)
27 #define SIR_UART_PUT_DLH(port, v) bfin_write16(((port)->membase + OFFSET_DLH), v)
28 #define SIR_UART_PUT_LCR(port, v) bfin_write16(((port)->membase + OFFSET_LCR), v)
29 #define SIR_UART_PUT_GCTL(port, v) bfin_write16(((port)->membase + OFFSET_GCTL), v)
31 #ifdef CONFIG_SIR_BFIN_DMA
37 #endif /* CONFIG_SIR_BFIN_DMA */
39 struct bfin_sir_port {
40 unsigned char __iomem *membase;
44 struct net_device *dev;
45 #ifdef CONFIG_SIR_BFIN_DMA
47 struct dma_rx_buf rx_dma_buf;
48 struct timer_list rx_dma_timer;
50 #endif /* CONFIG_SIR_BFIN_DMA */
51 unsigned int tx_dma_channel;
52 unsigned int rx_dma_channel;
55 struct bfin_sir_port sir_ports[BFIN_UART_NR_PORTS];
57 struct bfin_sir_port_res {
58 unsigned long base_addr;
60 unsigned int rx_dma_channel;
61 unsigned int tx_dma_channel;
64 struct bfin_sir_port_res bfin_sir_port_resource[] = {
65 #ifdef CONFIG_BFIN_SIR0
73 #ifdef CONFIG_BFIN_SIR1
83 int nr_sirs = ARRAY_SIZE(bfin_sir_port_resource);
85 struct bfin_sir_self {
86 struct bfin_sir_port *sir_port;
92 struct sk_buff *txskb;
93 struct sk_buff *rxskb;
94 struct net_device_stats stats;
96 struct irlap_cb *irlap;
102 struct work_struct work;
106 static inline unsigned int SIR_UART_GET_LSR(struct bfin_sir_port *port)
108 unsigned int lsr = bfin_read16(port->membase + OFFSET_LSR);
109 port->lsr |= (lsr & (BI|FE|PE|OE));
110 return lsr | port->lsr;
113 static inline void SIR_UART_CLEAR_LSR(struct bfin_sir_port *port)
116 bfin_read16(port->membase + OFFSET_LSR);
119 #define DRIVER_NAME "bfin_sir"
121 static int bfin_sir_hw_init(void)
124 #ifdef CONFIG_BFIN_SIR0
125 ret = peripheral_request(P_UART0_TX, DRIVER_NAME);
128 ret = peripheral_request(P_UART0_RX, DRIVER_NAME);
133 #ifdef CONFIG_BFIN_SIR1
134 ret = peripheral_request(P_UART1_TX, DRIVER_NAME);
137 ret = peripheral_request(P_UART1_RX, DRIVER_NAME);