97 lines
2.3 KiB
C
97 lines
2.3 KiB
C
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/*
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* Blackfin Infra-red Driver
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*
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* Copyright 2006-2009 Analog Devices Inc.
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*
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* Enter bugs at http://blackfin.uclinux.org/
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*
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* Licensed under the GPL-2 or later.
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*
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*/
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#include <linux/serial.h>
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#include <linux/module.h>
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#include <linux/netdevice.h>
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#include <linux/interrupt.h>
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#include <linux/delay.h>
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#include <linux/platform_device.h>
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#include <linux/dma-mapping.h>
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#include <linux/slab.h>
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#include <net/irda/irda.h>
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#include <net/irda/wrapper.h>
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#include <net/irda/irda_device.h>
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#include <asm/irq.h>
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#include <asm/cacheflush.h>
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#include <asm/dma.h>
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#include <asm/portmux.h>
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#undef DRIVER_NAME
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#ifdef CONFIG_SIR_BFIN_DMA
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struct dma_rx_buf {
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char *buf;
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int head;
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int tail;
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};
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#endif
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struct bfin_sir_port {
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unsigned char __iomem *membase;
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unsigned int irq;
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unsigned int lsr;
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unsigned long clk;
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struct net_device *dev;
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#ifdef CONFIG_SIR_BFIN_DMA
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int tx_done;
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struct dma_rx_buf rx_dma_buf;
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struct timer_list rx_dma_timer;
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int rx_dma_nrows;
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#endif
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unsigned int tx_dma_channel;
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unsigned int rx_dma_channel;
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};
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struct bfin_sir_port_res {
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unsigned long base_addr;
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int irq;
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unsigned int rx_dma_channel;
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unsigned int tx_dma_channel;
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};
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struct bfin_sir_self {
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struct bfin_sir_port *sir_port;
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spinlock_t lock;
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unsigned int open;
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int speed;
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int newspeed;
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struct sk_buff *txskb;
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struct sk_buff *rxskb;
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struct net_device_stats stats;
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struct device *dev;
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struct irlap_cb *irlap;
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struct qos_info qos;
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iobuff_t tx_buff;
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iobuff_t rx_buff;
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struct work_struct work;
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int mtt;
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};
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#define DRIVER_NAME "bfin_sir"
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#define port_membase(port) (((struct bfin_sir_port *)(port))->membase)
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#define get_lsr_cache(port) (((struct bfin_sir_port *)(port))->lsr)
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#define put_lsr_cache(port, v) (((struct bfin_sir_port *)(port))->lsr = (v))
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#include <asm/bfin_serial.h>
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static const unsigned short per[][4] = {
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/* rx pin tx pin NULL uart_number */
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{P_UART0_RX, P_UART0_TX, 0, 0},
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{P_UART1_RX, P_UART1_TX, 0, 1},
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{P_UART2_RX, P_UART2_TX, 0, 2},
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{P_UART3_RX, P_UART3_TX, 0, 3},
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};
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