[mirror_ubuntu-zesty-kernel.git] / include / linux / serial_sci.h

#ifndef __LINUX_SERIAL_SCI_H
#define __LINUX_SERIAL_SCI_H

#include <linux/serial_core.h>
#include <linux/sh_dma.h>

/*
 * Generic header for SuperH SCI(F) (used by sh/sh64/h8300 and related parts)
 */

#define SCIx_NOT_SUPPORTED	(-1)

enum {
	SCBRR_ALGO_1,		/* ((clk + 16 * bps) / (16 * bps) - 1) */
	SCBRR_ALGO_2,		/* ((clk + 16 * bps) / (32 * bps) - 1) */
	SCBRR_ALGO_3,		/* (((clk * 2) + 16 * bps) / (16 * bps) - 1) */
	SCBRR_ALGO_4,		/* (((clk * 2) + 16 * bps) / (32 * bps) - 1) */
	SCBRR_ALGO_5,		/* (((clk * 1000 / 32) / bps) - 1) */
};

#define SCSCR_TIE	(1 << 7)
#define SCSCR_RIE	(1 << 6)
#define SCSCR_TE	(1 << 5)
#define SCSCR_RE	(1 << 4)
#define SCSCR_REIE	(1 << 3)	/* not supported by all parts */
#define SCSCR_TOIE	(1 << 2)	/* not supported by all parts */
#define SCSCR_CKE1	(1 << 1)
#define SCSCR_CKE0	(1 << 0)

/* SCxSR SCI */
#define SCI_TDRE  0x80
#define SCI_RDRF  0x40
#define SCI_ORER  0x20
#define SCI_FER   0x10
#define SCI_PER   0x08
#define SCI_TEND  0x04

#define SCI_DEFAULT_ERROR_MASK (SCI_PER | SCI_FER)

/* SCxSR SCIF */
#define SCIF_ER    0x0080
#define SCIF_TEND  0x0040
#define SCIF_TDFE  0x0020
#define SCIF_BRK   0x0010
#define SCIF_FER   0x0008
#define SCIF_PER   0x0004
#define SCIF_RDF   0x0002
#define SCIF_DR    0x0001

#define SCIF_DEFAULT_ERROR_MASK (SCIF_PER | SCIF_FER | SCIF_ER | SCIF_BRK)

/* Offsets into the sci_port->irqs array */
enum {
	SCIx_ERI_IRQ,
	SCIx_RXI_IRQ,
	SCIx_TXI_IRQ,
	SCIx_BRI_IRQ,
	SCIx_NR_IRQS,
};

#define SCIx_IRQ_MUXED(irq)		\
{					\
	[SCIx_ERI_IRQ]	= (irq),	\
	[SCIx_RXI_IRQ]	= (irq),	\
	[SCIx_TXI_IRQ]	= (irq),	\
	[SCIx_BRI_IRQ]	= (irq),	\
}

struct device;

/*
 * Platform device specific platform_data struct
 */
struct plat_sci_port {
	unsigned long	mapbase;		/* resource base */
	unsigned int	irqs[SCIx_NR_IRQS];	/* ERI, RXI, TXI, BRI */
	unsigned int	type;			/* SCI / SCIF / IRDA */
	upf_t		flags;			/* UPF_* flags */

	unsigned int	scbrr_algo_id;		/* SCBRR calculation algo */
	unsigned int	scscr;			/* SCSCR initialization */

	/*
	 * Platform overrides if necessary, defaults otherwise.
	 */
	int		overrun_bit;
	unsigned int	error_mask;

	int		port_reg;

	struct device	*dma_dev;

	unsigned int	dma_slave_tx;
	unsigned int	dma_slave_rx;
};

#endif /* __LINUX_SERIAL_SCI_H */
Commit	Line	Data
96de1a8f PM	1	#ifndef __LINUX_SERIAL_SCI_H
96de1a8f PM	2	#define __LINUX_SERIAL_SCI_H
ecd95616 PM	3
ecd95616 PM	4	#include <linux/serial_core.h>
14baf9d7	5	#include <linux/sh_dma.h>
ecd95616 PM	6
ecd95616 PM	7	/*
96de1a8f	8	* Generic header for SuperH SCI(F) (used by sh/sh64/h8300 and related parts)
ecd95616 PM	9	*/
ecd95616 PM	10
debf9507 PM	11	#define SCIx_NOT_SUPPORTED (-1)
debf9507 PM	12
26c92f37 PM	13	enum {
	14	SCBRR_ALGO_1, /* ((clk + 16 * bps) / (16 * bps) - 1) */
	15	SCBRR_ALGO_2, /* ((clk + 16 * bps) / (32 * bps) - 1) */
	16	SCBRR_ALGO_3, /* (((clk * 2) + 16 * bps) / (16 * bps) - 1) */
	17	SCBRR_ALGO_4, /* (((clk * 2) + 16 * bps) / (32 * bps) - 1) */
	18	SCBRR_ALGO_5, /* (((clk * 1000 / 32) / bps) - 1) */
	19	};
	20
00b9de9c PM	21	#define SCSCR_TIE (1 << 7)
	22	#define SCSCR_RIE (1 << 6)
	23	#define SCSCR_TE (1 << 5)
	24	#define SCSCR_RE (1 << 4)
f43dc23d	25	#define SCSCR_REIE (1 << 3) /* not supported by all parts */
00b9de9c PM	26	#define SCSCR_TOIE (1 << 2) /* not supported by all parts */
	27	#define SCSCR_CKE1 (1 << 1)
	28	#define SCSCR_CKE0 (1 << 0)
	29
debf9507 PM	30	/* SCxSR SCI */
	31	#define SCI_TDRE 0x80
	32	#define SCI_RDRF 0x40
	33	#define SCI_ORER 0x20
	34	#define SCI_FER 0x10
	35	#define SCI_PER 0x08
	36	#define SCI_TEND 0x04
	37
	38	#define SCI_DEFAULT_ERROR_MASK (SCI_PER \| SCI_FER)
	39
	40	/* SCxSR SCIF */
	41	#define SCIF_ER 0x0080
	42	#define SCIF_TEND 0x0040
	43	#define SCIF_TDFE 0x0020
	44	#define SCIF_BRK 0x0010
	45	#define SCIF_FER 0x0008
	46	#define SCIF_PER 0x0004
	47	#define SCIF_RDF 0x0002
	48	#define SCIF_DR 0x0001
	49
	50	#define SCIF_DEFAULT_ERROR_MASK (SCIF_PER \| SCIF_FER \| SCIF_ER \| SCIF_BRK)
	51
ecd95616 PM	52	/* Offsets into the sci_port->irqs array */
	53	enum {
	54	SCIx_ERI_IRQ,
	55	SCIx_RXI_IRQ,
	56	SCIx_TXI_IRQ,
	57	SCIx_BRI_IRQ,
	58	SCIx_NR_IRQS,
	59	};
	60
22cc8378 PM	61	#define SCIx_IRQ_MUXED(irq) \
	62	{ \
	63	[SCIx_ERI_IRQ] = (irq), \
	64	[SCIx_RXI_IRQ] = (irq), \
	65	[SCIx_TXI_IRQ] = (irq), \
	66	[SCIx_BRI_IRQ] = (irq), \
	67	}
	68
73a19e4c GL	69	struct device;
73a19e4c GL	70
ecd95616 PM	71	/*
	72	* Platform device specific platform_data struct
	73	*/
	74	struct plat_sci_port {
ecd95616 PM	75	unsigned long mapbase; /* resource base */
	76	unsigned int irqs[SCIx_NR_IRQS]; /* ERI, RXI, TXI, BRI */
	77	unsigned int type; /* SCI / SCIF / IRDA */
	78	upf_t flags; /* UPF_* flags */
00b9de9c	79
26c92f37	80	unsigned int scbrr_algo_id; /* SCBRR calculation algo */
00b9de9c	81	unsigned int scscr; /* SCSCR initialization */
f43dc23d	82
debf9507 PM	83	/*
	84	* Platform overrides if necessary, defaults otherwise.
	85	*/
	86	int overrun_bit;
	87	unsigned int error_mask;
	88
514820eb PM	89	int port_reg;
514820eb PM	90
73a19e4c	91	struct device *dma_dev;
f43dc23d	92
27bd1075 PM	93	unsigned int dma_slave_tx;
27bd1075 PM	94	unsigned int dma_slave_rx;
ecd95616 PM	95	};
ecd95616 PM	96
96de1a8f	97	#endif /* __LINUX_SERIAL_SCI_H */