cregit-Linux how code gets into the kernel

Release 4.7 drivers/tty/serial/sh-sci.h

Directory: drivers/tty/serial
#include <linux/bitops.h>
#include <linux/serial_core.h>
#include <linux/io.h>
#include <linux/gpio.h>


#define SCI_MAJOR		204

#define SCI_MINOR_START		8


/*
 * SCI register subset common for all port types.
 * Not all registers will exist on all parts.
 */
enum {
	
SCSMR,				/* Serial Mode Register */
	
SCBRR,				/* Bit Rate Register */
	
SCSCR,				/* Serial Control Register */
	
SCxSR,				/* Serial Status Register */
	
SCFCR,				/* FIFO Control Register */
	
SCFDR,				/* FIFO Data Count Register */
	
SCxTDR,				/* Transmit (FIFO) Data Register */
	
SCxRDR,				/* Receive (FIFO) Data Register */
	
SCLSR,				/* Line Status Register */
	
SCTFDR,				/* Transmit FIFO Data Count Register */
	
SCRFDR,				/* Receive FIFO Data Count Register */
	
SCSPTR,				/* Serial Port Register */
	
HSSRR,				/* Sampling Rate Register */
	
SCPCR,				/* Serial Port Control Register */
	
SCPDR,				/* Serial Port Data Register */
	
SCDL,				/* BRG Frequency Division Register */
	
SCCKS,				/* BRG Clock Select Register */

	
SCIx_NR_REGS,
};


/* SCSMR (Serial Mode Register) */

#define SCSMR_C_A	BIT(7)	
/* Communication Mode */

#define SCSMR_CSYNC	BIT(7)	
/*   - Clocked synchronous mode */

#define SCSMR_ASYNC	0	
/*   - Asynchronous mode */

#define SCSMR_CHR	BIT(6)	
/* 7-bit Character Length */

#define SCSMR_PE	BIT(5)	
/* Parity Enable */

#define SCSMR_ODD	BIT(4)	
/* Odd Parity */

#define SCSMR_STOP	BIT(3)	
/* Stop Bit Length */

#define SCSMR_CKS	0x0003	
/* Clock Select */

/* Serial Mode Register, SCIFA/SCIFB only bits */

#define SCSMR_CKEDG	BIT(12)	
/* Transmit/Receive Clock Edge Select */

#define SCSMR_SRC_MASK	0x0700	
/* Sampling Control */

#define SCSMR_SRC_16	0x0000	
/* Sampling rate 1/16 */

#define SCSMR_SRC_5	0x0100	
/* Sampling rate 1/5 */

#define SCSMR_SRC_7	0x0200	
/* Sampling rate 1/7 */

#define SCSMR_SRC_11	0x0300	
/* Sampling rate 1/11 */

#define SCSMR_SRC_13	0x0400	
/* Sampling rate 1/13 */

#define SCSMR_SRC_17	0x0500	
/* Sampling rate 1/17 */

#define SCSMR_SRC_19	0x0600	
/* Sampling rate 1/19 */

#define SCSMR_SRC_27	0x0700	
/* Sampling rate 1/27 */

/* Serial Control Register, SCIFA/SCIFB only bits */

#define SCSCR_TDRQE	BIT(15)	
/* Tx Data Transfer Request Enable */

#define SCSCR_RDRQE	BIT(14)	
/* Rx Data Transfer Request Enable */

/* SCxSR (Serial Status Register) on SCI */

#define SCI_TDRE	BIT(7)	
/* Transmit Data Register Empty */

#define SCI_RDRF	BIT(6)	
/* Receive Data Register Full */

#define SCI_ORER	BIT(5)	
/* Overrun Error */

#define SCI_FER		BIT(4)	
/* Framing Error */

#define SCI_PER		BIT(3)	
/* Parity Error */

#define SCI_TEND	BIT(2)	
/* Transmit End */

#define SCI_RESERVED	0x03	
/* All reserved bits */


#define SCI_DEFAULT_ERROR_MASK (SCI_PER | SCI_FER)


#define SCI_RDxF_CLEAR	(u32)(~(SCI_RESERVED | SCI_RDRF))

#define SCI_ERROR_CLEAR	(u32)(~(SCI_RESERVED | SCI_PER | SCI_FER | SCI_ORER))

#define SCI_TDxE_CLEAR	(u32)(~(SCI_RESERVED | SCI_TEND | SCI_TDRE))

#define SCI_BREAK_CLEAR	(u32)(~(SCI_RESERVED | SCI_PER | SCI_FER | SCI_ORER))

/* SCxSR (Serial Status Register) on SCIF, SCIFA, SCIFB, HSCIF */

#define SCIF_ER		BIT(7)	
/* Receive Error */

#define SCIF_TEND	BIT(6)	
/* Transmission End */

#define SCIF_TDFE	BIT(5)	
/* Transmit FIFO Data Empty */

#define SCIF_BRK	BIT(4)	
/* Break Detect */

#define SCIF_FER	BIT(3)	
/* Framing Error */

#define SCIF_PER	BIT(2)	
/* Parity Error */

#define SCIF_RDF	BIT(1)	
/* Receive FIFO Data Full */

#define SCIF_DR		BIT(0)	
/* Receive Data Ready */
/* SCIF only (optional) */

#define SCIF_PERC	0xf000	
/* Number of Parity Errors */

#define SCIF_FERC	0x0f00	
/* Number of Framing Errors */
/*SCIFA/SCIFB and SCIF on SH7705/SH7720/SH7721 only */

#define SCIFA_ORER	BIT(9)	
/* Overrun Error */


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


#define SCIF_RDxF_CLEAR		(u32)(~(SCIF_DR | SCIF_RDF))

#define SCIF_ERROR_CLEAR	(u32)(~(SCIF_PER | SCIF_FER | SCIF_ER))

#define SCIF_TDxE_CLEAR		(u32)(~(SCIF_TDFE))

#define SCIF_BREAK_CLEAR	(u32)(~(SCIF_PER | SCIF_FER | SCIF_BRK))

/* SCFCR (FIFO Control Register) */

#define SCFCR_MCE	BIT(3)	
/* Modem Control Enable */

#define SCFCR_TFRST	BIT(2)	
/* Transmit FIFO Data Register Reset */

#define SCFCR_RFRST	BIT(1)	
/* Receive FIFO Data Register Reset */

#define SCFCR_LOOP	BIT(0)	
/* Loopback Test */

/* SCLSR (Line Status Register) on (H)SCIF */

#define SCLSR_ORER	BIT(0)	
/* Overrun Error */

/* SCSPTR (Serial Port Register), optional */

#define SCSPTR_RTSIO	BIT(7)	
/* Serial Port RTS Pin Input/Output */

#define SCSPTR_RTSDT	BIT(6)	
/* Serial Port RTS Pin Data */

#define SCSPTR_CTSIO	BIT(5)	
/* Serial Port CTS Pin Input/Output */

#define SCSPTR_CTSDT	BIT(4)	
/* Serial Port CTS Pin Data */

#define SCSPTR_SPB2IO	BIT(1)	
/* Serial Port Break Input/Output */

#define SCSPTR_SPB2DT	BIT(0)	
/* Serial Port Break Data */

/* HSSRR HSCIF */

#define HSCIF_SRE	BIT(15)	
/* Sampling Rate Register Enable */

/* SCPCR (Serial Port Control Register), SCIFA/SCIFB only */

#define SCPCR_RTSC	BIT(4)	
/* Serial Port RTS Pin / Output Pin */

#define SCPCR_CTSC	BIT(3)	
/* Serial Port CTS Pin / Input Pin */

/* SCPDR (Serial Port Data Register), SCIFA/SCIFB only */

#define SCPDR_RTSD	BIT(4)	
/* Serial Port RTS Output Pin Data */

#define SCPDR_CTSD	BIT(3)	
/* Serial Port CTS Input Pin Data */

/*
 * BRG Clock Select Register (Some SCIF and HSCIF)
 * The Baud Rate Generator for external clock can provide a clock source for
 * the sampling clock. It outputs either its frequency divided clock, or the
 * (undivided) (H)SCK external clock.
 */

#define SCCKS_CKS	BIT(15)	
/* Select (H)SCK (1) or divided SC_CLK (0) */

#define SCCKS_XIN	BIT(14)	
/* SC_CLK uses bus clock (1) or SCIF_CLK (0) */


#define SCxSR_TEND(port)	(((port)->type == PORT_SCI) ? SCI_TEND   : SCIF_TEND)

#define SCxSR_RDxF(port)	(((port)->type == PORT_SCI) ? SCI_RDRF   : SCIF_RDF)

#define SCxSR_TDxE(port)	(((port)->type == PORT_SCI) ? SCI_TDRE   : SCIF_TDFE)

#define SCxSR_FER(port)		(((port)->type == PORT_SCI) ? SCI_FER    : SCIF_FER)

#define SCxSR_PER(port)		(((port)->type == PORT_SCI) ? SCI_PER    : SCIF_PER)

#define SCxSR_BRK(port)		(((port)->type == PORT_SCI) ? 0x00       : SCIF_BRK)


#define SCxSR_ERRORS(port)	(to_sci_port(port)->error_mask)


#define SCxSR_RDxF_CLEAR(port) \
	(((port)->type == PORT_SCI) ? SCI_RDxF_CLEAR : SCIF_RDxF_CLEAR)

#define SCxSR_ERROR_CLEAR(port) \
	(to_sci_port(port)->error_clear)

#define SCxSR_TDxE_CLEAR(port) \
	(((port)->type == PORT_SCI) ? SCI_TDxE_CLEAR : SCIF_TDxE_CLEAR)

#define SCxSR_BREAK_CLEAR(port) \
	(((port)->type == PORT_SCI) ? SCI_BREAK_CLEAR : SCIF_BREAK_CLEAR)

Overall Contributors
PersonTokensPropCommitsCommitProp
geert uytterhoevengeert uytterhoeven41083.33%1252.17%


paul mundtpaul mundt5711.59%417.39%


magnus dammmagnus damm91.83%313.04%


nobuhiro iwamatsunobuhiro iwamatsu81.63%14.35%


andrew mortonandrew morton51.02%14.35%


yoshihiro shimodayoshihiro shimoda20.41%14.35%


laurent pinchartlaurent pinchart10.20%14.35%


Total492100.00%23100.00%

  
Directory: drivers/tty/serial



Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
{% endraw %}