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serial: sh-sci: Generalize overrun handling.

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This consolidates all of the broken out overrun handling and ensures that
we have sensible defaults per-port type, in addition to making sure that
overruns are flagged appropriately in the error mask for parts that
haven't explicitly disabled support for it.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt
2011-06-08 18:19:37 +09:00
parent b030340161
commit debf950716
3 changed files with 77 additions and 56 deletions
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52
drivers/tty/serial/sh-sci.h
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@@ -19,11 +19,9 @@
defined(CONFIG_ARCH_SH7372)
# define PORT_PTCR 0xA405011EUL
# define PORT_PVCR 0xA4050122UL
# define SCIF_ORER 0x0200 /* overrun error bit */
#elif defined(CONFIG_SH_RTS7751R2D)
# define SCSPTR1 0xFFE0001C /* 8 bit SCIF */
# define SCSPTR2 0xFFE80020 /* 16 bit SCIF */
# define SCIF_ORER 0x0001 /* overrun error bit */
#elif defined(CONFIG_CPU_SUBTYPE_SH7750) || \
defined(CONFIG_CPU_SUBTYPE_SH7750R) || \
defined(CONFIG_CPU_SUBTYPE_SH7750S) || \
@@ -32,15 +30,12 @@
defined(CONFIG_CPU_SUBTYPE_SH7751R)
# define SCSPTR1 0xffe0001c /* 8 bit SCI */
# define SCSPTR2 0xFFE80020 /* 16 bit SCIF */
# define SCIF_ORER 0x0001 /* overrun error bit */
#elif defined(CONFIG_CPU_SUBTYPE_SH7760)
# define SCSPTR0 0xfe600024 /* 16 bit SCIF */
# define SCSPTR1 0xfe610024 /* 16 bit SCIF */
# define SCSPTR2 0xfe620024 /* 16 bit SCIF */
# define SCIF_ORER 0x0001 /* overrun error bit */
#elif defined(CONFIG_CPU_SUBTYPE_SH7710) || defined(CONFIG_CPU_SUBTYPE_SH7712)
# define SCSPTR0 0xA4400000 /* 16 bit SCIF */
# define SCIF_ORER 0x0001 /* overrun error bit */
# define PACR 0xa4050100
# define PBCR 0xa4050102
#elif defined(CONFIG_CPU_SUBTYPE_SH7343)
@@ -48,35 +43,24 @@
#elif defined(CONFIG_CPU_SUBTYPE_SH7722)
# define PWDR 0xA4050166
# define PSCR 0xA405011E
# define SCIF_ORER 0x0001 /* overrun error bit */
#elif defined(CONFIG_CPU_SUBTYPE_SH7366)
# define SCPDR0 0xA405013E /* 16 bit SCIF0 PSDR */
# define SCSPTR0 SCPDR0
# define SCIF_ORER 0x0001 /* overrun error bit */
#elif defined(CONFIG_CPU_SUBTYPE_SH7723)
# define SCSPTR0 0xa4050160
# define SCIF_ORER 0x0001 /* overrun error bit */
#elif defined(CONFIG_CPU_SUBTYPE_SH7724)
# define SCIF_ORER 0x0001 /* overrun error bit */
#elif defined(CONFIG_CPU_SUBTYPE_SH4_202)
# define SCSPTR2 0xffe80020 /* 16 bit SCIF */
# define SCIF_ORER 0x0001 /* overrun error bit */
#elif defined(CONFIG_CPU_SUBTYPE_SH7757)
# define SCSPTR0 0xfe4b0020
# define SCIF_ORER 0x0001
#elif defined(CONFIG_CPU_SUBTYPE_SH7763)
# define SCSPTR0 0xffe00024 /* 16 bit SCIF */
# define SCIF_ORER 0x0001 /* overrun error bit */
#elif defined(CONFIG_CPU_SUBTYPE_SH7770)
# define SCSPTR0 0xff923020 /* 16 bit SCIF */
# define SCIF_ORER 0x0001 /* overrun error bit */
#elif defined(CONFIG_CPU_SUBTYPE_SH7780)
# define SCSPTR0 0xffe00024 /* 16 bit SCIF */
# define SCIF_ORER 0x0001 /* Overrun error bit */
#elif defined(CONFIG_CPU_SUBTYPE_SH7785) || \
defined(CONFIG_CPU_SUBTYPE_SH7786)
# define SCSPTR0 0xffea0024 /* 16 bit SCIF */
# define SCIF_ORER 0x0001 /* Overrun error bit */
#elif defined(CONFIG_CPU_SUBTYPE_SH7201) || \
defined(CONFIG_CPU_SUBTYPE_SH7203) || \
defined(CONFIG_CPU_SUBTYPE_SH7206) || \
@@ -84,36 +68,12 @@
# define SCSPTR0 0xfffe8020 /* 16 bit SCIF */
#elif defined(CONFIG_CPU_SUBTYPE_SH7619)
# define SCSPTR0 0xf8400020 /* 16 bit SCIF */
# define SCIF_ORER 0x0001 /* overrun error bit */
#elif defined(CONFIG_CPU_SUBTYPE_SHX3)
# define SCSPTR0 0xffc30020 /* 16 bit SCIF */
# define SCIF_ORER 0x0001 /* Overrun error bit */
#else
# error CPU subtype not defined
#endif
/* SCxSR SCI */
#define SCI_TDRE 0x80 /* 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
#define SCI_RDRF 0x40 /* 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
#define SCI_ORER 0x20 /* 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
#define SCI_FER 0x10 /* 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
#define SCI_PER 0x08 /* 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
#define SCI_TEND 0x04 /* 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
/* SCI_MPB 0x02 * 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
/* SCI_MPBT 0x01 * 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
#define SCI_ERRORS ( SCI_PER | SCI_FER | SCI_ORER)
/* SCxSR SCIF */
#define SCIF_ER 0x0080 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
#define SCIF_TEND 0x0040 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
#define SCIF_TDFE 0x0020 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
#define SCIF_BRK 0x0010 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
#define SCIF_FER 0x0008 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
#define SCIF_PER 0x0004 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
#define SCIF_RDF 0x0002 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
#define SCIF_DR 0x0001 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
#if defined(CONFIG_CPU_SUBTYPE_SH7705) || \
defined(CONFIG_CPU_SUBTYPE_SH7720) || \
defined(CONFIG_CPU_SUBTYPE_SH7721) || \
@@ -121,35 +81,27 @@
defined(CONFIG_ARCH_SH7367) || \
defined(CONFIG_ARCH_SH7377) || \
defined(CONFIG_ARCH_SH7372)
# define SCIF_ORER 0x0200
# define SCIF_ERRORS ( SCIF_PER | SCIF_FER | SCIF_ER | SCIF_BRK | SCIF_ORER)
# define SCIF_RFDC_MASK 0x007f
# define SCIF_TXROOM_MAX 64
#elif defined(CONFIG_CPU_SUBTYPE_SH7763)
# define SCIF_ERRORS ( SCIF_PER | SCIF_FER | SCIF_ER | SCIF_BRK )
# define SCIF_RFDC_MASK 0x007f
# define SCIF_TXROOM_MAX 64
/* SH7763 SCIF2 support */
# define SCIF2_RFDC_MASK 0x001f
# define SCIF2_TXROOM_MAX 16
#else
# define SCIF_ERRORS ( SCIF_PER | SCIF_FER | SCIF_ER | SCIF_BRK)
# define SCIF_RFDC_MASK 0x001f
# define SCIF_TXROOM_MAX 16
#endif
#ifndef SCIF_ORER
#define SCIF_ORER 0x0000
#endif
#define SCxSR_TEND(port) (((port)->type == PORT_SCI) ? SCI_TEND : SCIF_TEND)
#define SCxSR_ERRORS(port) (((port)->type == PORT_SCI) ? SCI_ERRORS : SCIF_ERRORS)
#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_ORER(port) (((port)->type == PORT_SCI) ? SCI_ORER : SCIF_ORER)
#define SCxSR_ERRORS(port) (to_sci_port(port)->cfg->error_mask)
#if defined(CONFIG_CPU_SUBTYPE_SH7705) || \
defined(CONFIG_CPU_SUBTYPE_SH7720) || \