[linux-2.6-block.git] / include / asm-blackfin / mach-bf533 / bfin_sir.h

/*
 * Blackfin Infra-red Driver
 *
 * Copyright 2006-2008 Analog Devices Inc.
 *
 * Enter bugs at http://blackfin.uclinux.org/
 *
 * Licensed under the GPL-2 or later.
 *
 */

#include <linux/serial.h>
#include <asm/dma.h>
#include <asm/portmux.h>

#define SIR_UART_GET_CHAR(port)   bfin_read16((port)->membase + OFFSET_RBR)
#define SIR_UART_GET_DLL(port)    bfin_read16((port)->membase + OFFSET_DLL)
#define SIR_UART_GET_IER(port)    bfin_read16((port)->membase + OFFSET_IER)
#define SIR_UART_GET_DLH(port)    bfin_read16((port)->membase + OFFSET_DLH)
#define SIR_UART_GET_IIR(port)    bfin_read16((port)->membase + OFFSET_IIR)
#define SIR_UART_GET_LCR(port)    bfin_read16((port)->membase + OFFSET_LCR)
#define SIR_UART_GET_GCTL(port)   bfin_read16((port)->membase + OFFSET_GCTL)

#define SIR_UART_PUT_CHAR(port, v) bfin_write16(((port)->membase + OFFSET_THR), v)
#define SIR_UART_PUT_DLL(port, v)  bfin_write16(((port)->membase + OFFSET_DLL), v)
#define SIR_UART_PUT_IER(port, v)  bfin_write16(((port)->membase + OFFSET_IER), v)
#define SIR_UART_PUT_DLH(port, v)  bfin_write16(((port)->membase + OFFSET_DLH), v)
#define SIR_UART_PUT_LCR(port, v)  bfin_write16(((port)->membase + OFFSET_LCR), v)
#define SIR_UART_PUT_GCTL(port, v) bfin_write16(((port)->membase + OFFSET_GCTL), v)

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

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 /* CONFIG_SIR_BFIN_DMA */
	unsigned int            tx_dma_channel;
	unsigned int            rx_dma_channel;
};

struct bfin_sir_port sir_ports[BFIN_UART_NR_PORTS];

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

struct bfin_sir_port_res bfin_sir_port_resource[] = {
#ifdef CONFIG_BFIN_SIR0
	{
	0xFFC00400,
	IRQ_UART_RX,
	CH_UART_RX,
	CH_UART_TX,
	},
#endif
};

int nr_sirs = ARRAY_SIZE(bfin_sir_port_resource);

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;
};

static inline unsigned int SIR_UART_GET_LSR(struct bfin_sir_port *port)
{
	unsigned int lsr = bfin_read16(port->membase + OFFSET_LSR);
	port->lsr |= (lsr & (BI|FE|PE|OE));
	return lsr | port->lsr;
}

static inline void SIR_UART_CLEAR_LSR(struct bfin_sir_port *port)
{
	port->lsr = 0;
	bfin_read16(port->membase + OFFSET_LSR);
}

#define DRIVER_NAME "bfin_sir"

static int bfin_sir_hw_init(void)
{
	int ret = -ENODEV;
#ifdef CONFIG_BFIN_SIR0
	ret = peripheral_request(P_UART0_TX, DRIVER_NAME);
	if (ret)
		return ret;
	ret = peripheral_request(P_UART0_RX, DRIVER_NAME);
	if (ret)
		return ret;
#endif
	return ret;
}
Commit	Line	Data
5be36d22 GY	1	/*
	2	* Blackfin Infra-red Driver
	3	*
	4	* Copyright 2006-2008 Analog Devices Inc.
	5	*
	6	* Enter bugs at http://blackfin.uclinux.org/
	7	*
	8	* Licensed under the GPL-2 or later.
	9	*
	10	*/
	11
	12	#include <linux/serial.h>
	13	#include <asm/dma.h>
	14	#include <asm/portmux.h>
	15
	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)
	23
	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)
	30
	31	#ifdef CONFIG_SIR_BFIN_DMA
	32	struct dma_rx_buf {
	33	char *buf;
	34	int head;
	35	int tail;
	36	};
	37	#endif /* CONFIG_SIR_BFIN_DMA */
	38
	39	struct bfin_sir_port {
	40	unsigned char __iomem *membase;
	41	unsigned int irq;
	42	unsigned int lsr;
	43	unsigned long clk;
	44	struct net_device *dev;
	45	#ifdef CONFIG_SIR_BFIN_DMA
	46	int tx_done;
	47	struct dma_rx_buf rx_dma_buf;
	48	struct timer_list rx_dma_timer;
	49	int rx_dma_nrows;
	50	#endif /* CONFIG_SIR_BFIN_DMA */
	51	unsigned int tx_dma_channel;
	52	unsigned int rx_dma_channel;
	53	};
	54
	55	struct bfin_sir_port sir_ports[BFIN_UART_NR_PORTS];
	56
	57	struct bfin_sir_port_res {
	58	unsigned long base_addr;
	59	int irq;
	60	unsigned int rx_dma_channel;
	61	unsigned int tx_dma_channel;
	62	};
	63
	64	struct bfin_sir_port_res bfin_sir_port_resource[] = {
65	#ifdef CONFIG_BFIN_SIR0
66	{
67	0xFFC00400,
68	IRQ_UART_RX,
69	CH_UART_RX,
70	CH_UART_TX,
71	},
72	#endif
73	};
74
75	int nr_sirs = ARRAY_SIZE(bfin_sir_port_resource);
76
77	struct bfin_sir_self {
78	struct bfin_sir_port *sir_port;
79	spinlock_t lock;
80	unsigned int open;
81	int speed;
82	int newspeed;
83
84	struct sk_buff *txskb;
85	struct sk_buff *rxskb;
86	struct net_device_stats stats;
87	struct device *dev;
88	struct irlap_cb *irlap;
89	struct qos_info qos;
90
91	iobuff_t tx_buff;
92	iobuff_t rx_buff;
93
94	struct work_struct work;
95	int mtt;
96	};
97
98	static inline unsigned int SIR_UART_GET_LSR(struct bfin_sir_port *port)
99	{
100	unsigned int lsr = bfin_read16(port->membase + OFFSET_LSR);
101	port->lsr \|= (lsr & (BI\|FE\|PE\|OE));
102	return lsr \| port->lsr;
103	}
104
105	static inline void SIR_UART_CLEAR_LSR(struct bfin_sir_port *port)
106	{
107	port->lsr = 0;
108	bfin_read16(port->membase + OFFSET_LSR);
109	}
110
111	#define DRIVER_NAME "bfin_sir"
112
aa3348f4	113	static int bfin_sir_hw_init(void)
5be36d22	114	{
aa3348f4	115	int ret = -ENODEV;
5be36d22	116	#ifdef CONFIG_BFIN_SIR0
aa3348f4 GY	117	ret = peripheral_request(P_UART0_TX, DRIVER_NAME);
	118	if (ret)
	119	return ret;
	120	ret = peripheral_request(P_UART0_RX, DRIVER_NAME);
	121	if (ret)
	122	return ret;
5be36d22	123	#endif
aa3348f4	124	return ret;
5be36d22	125	}