bfin_sir.h

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/*
 * Blackfin Infra-red Driver
 *
 * Copyright 2006-2009 Analog Devices Inc.
 *
 * Enter bugs at http://blackfin.uclinux.org/
 *
 * Licensed under the GPL-2 or later.
 *
 */

#include <linux/serial.h>
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <linux/slab.h>

#include <net/irda/irda.h>
#include <net/irda/wrapper.h>
#include <net/irda/irda_device.h>

#include <asm/irq.h>
#include <asm/cacheflush.h>
#include <asm/dma.h>
#include <asm/portmux.h>
#undef DRIVER_NAME

#ifdef CONFIG_SIR_BFIN_DMA
struct dma_rx_buf {
    char *buf;
    int head;
    int tail;
};
#endif

struct bfin_sir_port {
    unsigned char __iomem   *membase;
    unsigned int            irq;
    unsigned int            lsr;
    unsigned long           clk;
    struct net_device       *dev;
#ifdef CONFIG_SIR_BFIN_DMA
    int                     tx_done;
    struct dma_rx_buf       rx_dma_buf;
    struct timer_list       rx_dma_timer;
    int                     rx_dma_nrows;
#endif
    unsigned int            tx_dma_channel;
    unsigned int            rx_dma_channel;
};

struct bfin_sir_port_res {
    unsigned long   base_addr;
    int             irq;
    unsigned int    rx_dma_channel;
    unsigned int    tx_dma_channel;
};

struct bfin_sir_self {
    struct bfin_sir_port    *sir_port;
    spinlock_t              lock;
    unsigned int            open;
    int                     speed;
    int                     newspeed;

    struct sk_buff          *txskb;
    struct sk_buff          *rxskb;
    struct net_device_stats stats;
    struct device           *dev;
    struct irlap_cb         *irlap;
    struct qos_info         qos;

    iobuff_t                tx_buff;
    iobuff_t                rx_buff;

    struct work_struct      work;
    int                     mtt;
};

#define DRIVER_NAME "bfin_sir"

#define port_membase(port)     (((struct bfin_sir_port *)(port))->membase)
#define get_lsr_cache(port)    (((struct bfin_sir_port *)(port))->lsr)
#define put_lsr_cache(port, v) (((struct bfin_sir_port *)(port))->lsr = (v))
#include <asm/bfin_serial.h>

static const unsigned short per[][4] = {
    /* rx pin      tx pin     NULL  uart_number */
    {P_UART0_RX, P_UART0_TX,    0,    0},
    {P_UART1_RX, P_UART1_TX,    0,    1},
    {P_UART2_RX, P_UART2_TX,    0,    2},
    {P_UART3_RX, P_UART3_TX,    0,    3},
};