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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},
};
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