591 строка
22 KiB
C
591 строка
22 KiB
C
/* $Id: sh-sci.h,v 1.4 2004/02/19 16:43:56 lethal Exp $
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*
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* linux/drivers/serial/sh-sci.h
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*
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* SuperH on-chip serial module support. (SCI with no FIFO / with FIFO)
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* Copyright (C) 1999, 2000 Niibe Yutaka
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* Copyright (C) 2000 Greg Banks
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* Copyright (C) 2002, 2003 Paul Mundt
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* Modified to support multiple serial ports. Stuart Menefy (May 2000).
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* Modified to support SH7300(SH-Mobile) SCIF. Takashi Kusuda (Jun 2003).
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* Modified to support H8/300 Series Yoshinori Sato (Feb 2004).
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*/
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#include <linux/serial_core.h>
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#if defined(__H8300H__) || defined(__H8300S__)
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#include <asm/gpio.h>
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#if defined(CONFIG_H83007) || defined(CONFIG_H83068)
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#include <asm/regs306x.h>
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#endif
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#if defined(CONFIG_H8S2678)
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#include <asm/regs267x.h>
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#endif
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#endif
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/* Offsets into the sci_port->irqs array */
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#define SCIx_ERI_IRQ 0
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#define SCIx_RXI_IRQ 1
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#define SCIx_TXI_IRQ 2
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/* ERI, RXI, TXI, BRI */
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#define SCI_IRQS { 23, 24, 25, 0 }
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#define SH3_SCIF_IRQS { 56, 57, 59, 58 }
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#define SH3_IRDA_IRQS { 52, 53, 55, 54 }
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#define SH4_SCIF_IRQS { 40, 41, 43, 42 }
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#define STB1_SCIF1_IRQS {23, 24, 26, 25 }
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#define SH7760_SCIF0_IRQS { 52, 53, 55, 54 }
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#define SH7760_SCIF1_IRQS { 72, 73, 75, 74 }
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#define SH7760_SCIF2_IRQS { 76, 77, 79, 78 }
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#define SH7300_SCIF0_IRQS {80, 80, 80, 80 }
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#define SH73180_SCIF_IRQS {80, 81, 83, 82 }
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#define H8300H_SCI_IRQS0 {52, 53, 54, 0 }
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#define H8300H_SCI_IRQS1 {56, 57, 58, 0 }
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#define H8300H_SCI_IRQS2 {60, 61, 62, 0 }
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#define H8S_SCI_IRQS0 {88, 89, 90, 0 }
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#define H8S_SCI_IRQS1 {92, 93, 94, 0 }
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#define H8S_SCI_IRQS2 {96, 97, 98, 0 }
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#define SH5_SCIF_IRQS {39, 40, 42, 0 }
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#define SH7770_SCIF0_IRQS {61, 61, 61, 61 }
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#define SH7770_SCIF1_IRQS {62, 62, 62, 62 }
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#define SH7770_SCIF2_IRQS {63, 63, 63, 63 }
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#define SH7780_SCIF0_IRQS {40, 41, 43, 42 }
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#define SH7780_SCIF1_IRQS {76, 77, 79, 78 }
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#if defined(CONFIG_CPU_SUBTYPE_SH7708)
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# define SCSPTR 0xffffff7c /* 8 bit */
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# define SCSCR_INIT(port) 0x30 /* TIE=0,RIE=0,TE=1,RE=1 */
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# define SCI_ONLY
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#elif defined(CONFIG_CPU_SUBTYPE_SH7707) || defined(CONFIG_CPU_SUBTYPE_SH7709)
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# define SCPCR 0xA4000116 /* 16 bit SCI and SCIF */
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# define SCPDR 0xA4000136 /* 8 bit SCI and SCIF */
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# define SCSCR_INIT(port) 0x30 /* TIE=0,RIE=0,TE=1,RE=1 */
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# define SCI_AND_SCIF
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#elif defined(CONFIG_CPU_SUBTYPE_SH7705)
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# define SCIF0 0xA4400000
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# define SCIF2 0xA4410000
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# define SCSMR_Ir 0xA44A0000
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# define IRDA_SCIF SCIF0
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# define SCPCR 0xA4000116
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# define SCPDR 0xA4000136
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/* Set the clock source,
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* SCIF2 (0xA4410000) -> External clock, SCK pin used as clock input
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* SCIF0 (0xA4400000) -> Internal clock, SCK pin as serial clock output
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*/
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# define SCSCR_INIT(port) (port->mapbase == SCIF2) ? 0xF3 : 0xF0
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# define SCIF_ONLY
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#elif defined(CONFIG_SH_RTS7751R2D)
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# define SCSPTR2 0xFFE80020 /* 16 bit SCIF */
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# define SCIF_ORER 0x0001 /* overrun error bit */
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# define SCSCR_INIT(port) 0x3a /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
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# define SCIF_ONLY
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#elif defined(CONFIG_CPU_SUBTYPE_SH7750) || defined(CONFIG_CPU_SUBTYPE_SH7751)
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# define SCSPTR1 0xffe0001c /* 8 bit SCI */
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# define SCSPTR2 0xFFE80020 /* 16 bit SCIF */
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# define SCIF_ORER 0x0001 /* overrun error bit */
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# define SCSCR_INIT(port) (((port)->type == PORT_SCI) ? \
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0x30 /* TIE=0,RIE=0,TE=1,RE=1 */ : \
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0x38 /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */ )
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# define SCI_AND_SCIF
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#elif defined(CONFIG_CPU_SUBTYPE_SH7760)
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# define SCSPTR0 0xfe600024 /* 16 bit SCIF */
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# define SCSPTR1 0xfe610024 /* 16 bit SCIF */
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# define SCSPTR2 0xfe620024 /* 16 bit SCIF */
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# define SCIF_ORER 0x0001 /* overrun error bit */
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# define SCSCR_INIT(port) 0x38 /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
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# define SCIF_ONLY
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#elif defined(CONFIG_CPU_SUBTYPE_SH7300)
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# define SCPCR 0xA4050116 /* 16 bit SCIF */
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# define SCPDR 0xA4050136 /* 16 bit SCIF */
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# define SCSCR_INIT(port) 0x0030 /* TIE=0,RIE=0,TE=1,RE=1 */
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# define SCIF_ONLY
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#elif defined(CONFIG_CPU_SUBTYPE_SH73180)
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# define SCPDR 0xA4050138 /* 16 bit SCIF */
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# define SCSPTR2 SCPDR
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# define SCIF_ORER 0x0001 /* overrun error bit */
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# define SCSCR_INIT(port) 0x0038 /* TIE=0,RIE=0,TE=1,RE=1 */
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# define SCIF_ONLY
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#elif defined(CONFIG_CPU_SUBTYPE_SH4_202)
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# define SCSPTR2 0xffe80020 /* 16 bit SCIF */
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# define SCIF_ORER 0x0001 /* overrun error bit */
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# define SCSCR_INIT(port) 0x38 /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
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# define SCIF_ONLY
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#elif defined(CONFIG_CPU_SUBTYPE_ST40STB1)
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# define SCSPTR1 0xffe00020 /* 16 bit SCIF */
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# define SCSPTR2 0xffe80020 /* 16 bit SCIF */
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# define SCIF_ORER 0x0001 /* overrun error bit */
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# define SCSCR_INIT(port) 0x38 /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
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# define SCIF_ONLY
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#elif defined(CONFIG_CPU_SUBTYPE_SH5_101) || defined(CONFIG_CPU_SUBTYPE_SH5_103)
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# include <asm/hardware.h>
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# define SCIF_BASE_ADDR 0x01030000
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# define SCIF_ADDR_SH5 PHYS_PERIPHERAL_BLOCK+SCIF_BASE_ADDR
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# define SCIF_PTR2_OFFS 0x0000020
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# define SCIF_LSR2_OFFS 0x0000024
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# define SCSPTR2 ((port->mapbase)+SCIF_PTR2_OFFS) /* 16 bit SCIF */
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# define SCLSR2 ((port->mapbase)+SCIF_LSR2_OFFS) /* 16 bit SCIF */
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# define SCSCR_INIT(port) 0x38 /* TIE=0,RIE=0,
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TE=1,RE=1,REIE=1 */
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# define SCIF_ONLY
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#elif defined(CONFIG_H83007) || defined(CONFIG_H83068)
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# define SCSCR_INIT(port) 0x30 /* TIE=0,RIE=0,TE=1,RE=1 */
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# define SCI_ONLY
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# define H8300_SCI_DR(ch) *(volatile char *)(P1DR + h8300_sci_pins[ch].port)
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#elif defined(CONFIG_H8S2678)
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# define SCSCR_INIT(port) 0x30 /* TIE=0,RIE=0,TE=1,RE=1 */
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# define SCI_ONLY
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# define H8300_SCI_DR(ch) *(volatile char *)(P1DR + h8300_sci_pins[ch].port)
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#elif defined(CONFIG_CPU_SUBTYPE_SH7770)
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# define SCSPTR0 0xff923020 /* 16 bit SCIF */
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# define SCSPTR1 0xff924020 /* 16 bit SCIF */
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# define SCSPTR2 0xff925020 /* 16 bit SCIF */
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# define SCIF_ORER 0x0001 /* overrun error bit */
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# define SCSCR_INIT(port) 0x3c /* TIE=0,RIE=0,TE=1,RE=1,REIE=1,cke=2 */
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# define SCIF_ONLY
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#elif defined(CONFIG_CPU_SUBTYPE_SH7780)
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# define SCSPTR0 0xffe00024 /* 16 bit SCIF */
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# define SCSPTR1 0xffe10024 /* 16 bit SCIF */
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# define SCIF_OPER 0x0001 /* Overrun error bit */
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# define SCSCR_INIT(port) 0x3a /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
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# define SCIF_ONLY
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#else
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# error CPU subtype not defined
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#endif
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/* SCSCR */
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#define SCI_CTRL_FLAGS_TIE 0x80 /* all */
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#define SCI_CTRL_FLAGS_RIE 0x40 /* all */
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#define SCI_CTRL_FLAGS_TE 0x20 /* all */
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#define SCI_CTRL_FLAGS_RE 0x10 /* all */
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#if defined(CONFIG_CPU_SUBTYPE_SH7750) || defined(CONFIG_CPU_SUBTYPE_SH7751) || defined(CONFIG_CPU_SUBTYPE_SH7780)
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#define SCI_CTRL_FLAGS_REIE 0x08 /* 7750 SCIF */
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#else
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#define SCI_CTRL_FLAGS_REIE 0
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#endif
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/* SCI_CTRL_FLAGS_MPIE 0x08 * 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
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/* SCI_CTRL_FLAGS_TEIE 0x04 * 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
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/* SCI_CTRL_FLAGS_CKE1 0x02 * all */
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/* SCI_CTRL_FLAGS_CKE0 0x01 * 7707 SCI/SCIF, 7708 SCI, 7709 SCI/SCIF, 7750 SCI */
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/* SCxSR SCI */
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#define SCI_TDRE 0x80 /* 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
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#define SCI_RDRF 0x40 /* 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
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#define SCI_ORER 0x20 /* 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
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#define SCI_FER 0x10 /* 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
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#define SCI_PER 0x08 /* 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
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#define SCI_TEND 0x04 /* 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
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/* SCI_MPB 0x02 * 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
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/* SCI_MPBT 0x01 * 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
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#define SCI_ERRORS ( SCI_PER | SCI_FER | SCI_ORER)
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/* SCxSR SCIF */
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#define SCIF_ER 0x0080 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
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#define SCIF_TEND 0x0040 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
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#define SCIF_TDFE 0x0020 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
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#define SCIF_BRK 0x0010 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
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#define SCIF_FER 0x0008 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
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#define SCIF_PER 0x0004 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
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#define SCIF_RDF 0x0002 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
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#define SCIF_DR 0x0001 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
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#if defined(CONFIG_CPU_SUBTYPE_SH7300) || defined(CONFIG_CPU_SUBTYPE_SH7705)
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#define SCIF_ORER 0x0200
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#define SCIF_ERRORS ( SCIF_PER | SCIF_FER | SCIF_ER | SCIF_BRK | SCIF_ORER)
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#define SCIF_RFDC_MASK 0x007f
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#define SCIF_TXROOM_MAX 64
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#else
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#define SCIF_ERRORS ( SCIF_PER | SCIF_FER | SCIF_ER | SCIF_BRK)
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#define SCIF_RFDC_MASK 0x001f
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#define SCIF_TXROOM_MAX 16
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#endif
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#if defined(SCI_ONLY)
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# define SCxSR_TEND(port) SCI_TEND
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# define SCxSR_ERRORS(port) SCI_ERRORS
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# define SCxSR_RDxF(port) SCI_RDRF
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# define SCxSR_TDxE(port) SCI_TDRE
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# define SCxSR_ORER(port) SCI_ORER
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# define SCxSR_FER(port) SCI_FER
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# define SCxSR_PER(port) SCI_PER
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# define SCxSR_BRK(port) 0x00
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# define SCxSR_RDxF_CLEAR(port) 0xbc
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# define SCxSR_ERROR_CLEAR(port) 0xc4
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# define SCxSR_TDxE_CLEAR(port) 0x78
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# define SCxSR_BREAK_CLEAR(port) 0xc4
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#elif defined(SCIF_ONLY)
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# define SCxSR_TEND(port) SCIF_TEND
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# define SCxSR_ERRORS(port) SCIF_ERRORS
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# define SCxSR_RDxF(port) SCIF_RDF
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# define SCxSR_TDxE(port) SCIF_TDFE
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#if defined(CONFIG_CPU_SUBTYPE_SH7300) || defined(CONFIG_CPU_SUBTYPE_SH7705)
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# define SCxSR_ORER(port) SCIF_ORER
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#else
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# define SCxSR_ORER(port) 0x0000
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#endif
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# define SCxSR_FER(port) SCIF_FER
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# define SCxSR_PER(port) SCIF_PER
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# define SCxSR_BRK(port) SCIF_BRK
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#if defined(CONFIG_CPU_SUBTYPE_SH7300) || defined(CONFIG_CPU_SUBTYPE_SH7705)
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# define SCxSR_RDxF_CLEAR(port) (sci_in(port,SCxSR)&0xfffc)
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# define SCxSR_ERROR_CLEAR(port) (sci_in(port,SCxSR)&0xfd73)
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# define SCxSR_TDxE_CLEAR(port) (sci_in(port,SCxSR)&0xffdf)
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# define SCxSR_BREAK_CLEAR(port) (sci_in(port,SCxSR)&0xffe3)
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#else
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/* SH7705 can also use this, clearing is same between 7705 and 7709 and 7300 */
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# define SCxSR_RDxF_CLEAR(port) 0x00fc
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# define SCxSR_ERROR_CLEAR(port) 0x0073
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# define SCxSR_TDxE_CLEAR(port) 0x00df
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# define SCxSR_BREAK_CLEAR(port) 0x00e3
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#endif
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#else
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# define SCxSR_TEND(port) (((port)->type == PORT_SCI) ? SCI_TEND : SCIF_TEND)
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# define SCxSR_ERRORS(port) (((port)->type == PORT_SCI) ? SCI_ERRORS : SCIF_ERRORS)
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# define SCxSR_RDxF(port) (((port)->type == PORT_SCI) ? SCI_RDRF : SCIF_RDF)
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# define SCxSR_TDxE(port) (((port)->type == PORT_SCI) ? SCI_TDRE : SCIF_TDFE)
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# define SCxSR_ORER(port) (((port)->type == PORT_SCI) ? SCI_ORER : 0x0000)
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# define SCxSR_FER(port) (((port)->type == PORT_SCI) ? SCI_FER : SCIF_FER)
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# define SCxSR_PER(port) (((port)->type == PORT_SCI) ? SCI_PER : SCIF_PER)
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# define SCxSR_BRK(port) (((port)->type == PORT_SCI) ? 0x00 : SCIF_BRK)
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# define SCxSR_RDxF_CLEAR(port) (((port)->type == PORT_SCI) ? 0xbc : 0x00fc)
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# define SCxSR_ERROR_CLEAR(port) (((port)->type == PORT_SCI) ? 0xc4 : 0x0073)
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# define SCxSR_TDxE_CLEAR(port) (((port)->type == PORT_SCI) ? 0x78 : 0x00df)
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# define SCxSR_BREAK_CLEAR(port) (((port)->type == PORT_SCI) ? 0xc4 : 0x00e3)
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#endif
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/* SCFCR */
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#define SCFCR_RFRST 0x0002
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#define SCFCR_TFRST 0x0004
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#define SCFCR_TCRST 0x4000
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#define SCFCR_MCE 0x0008
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#define SCI_MAJOR 204
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#define SCI_MINOR_START 8
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/* Generic serial flags */
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#define SCI_RX_THROTTLE 0x0000001
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#define SCI_MAGIC 0xbabeface
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/*
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* Events are used to schedule things to happen at timer-interrupt
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* time, instead of at rs interrupt time.
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*/
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#define SCI_EVENT_WRITE_WAKEUP 0
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struct sci_port {
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struct uart_port port;
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int type;
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unsigned char irqs[4]; /* ERI, RXI, TXI, BRI */
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void (*init_pins)(struct uart_port *port, unsigned int cflag);
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int break_flag;
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struct timer_list break_timer;
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};
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#define SCI_IN(size, offset) \
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unsigned int addr = port->mapbase + (offset); \
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if ((size) == 8) { \
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return ctrl_inb(addr); \
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} else { \
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return ctrl_inw(addr); \
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}
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#define SCI_OUT(size, offset, value) \
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unsigned int addr = port->mapbase + (offset); \
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if ((size) == 8) { \
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ctrl_outb(value, addr); \
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} else { \
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ctrl_outw(value, addr); \
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}
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#define CPU_SCIx_FNS(name, sci_offset, sci_size, scif_offset, scif_size)\
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static inline unsigned int sci_##name##_in(struct uart_port *port) \
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{ \
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if (port->type == PORT_SCI) { \
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SCI_IN(sci_size, sci_offset) \
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} else { \
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SCI_IN(scif_size, scif_offset); \
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} \
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} \
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static inline void sci_##name##_out(struct uart_port *port, unsigned int value) \
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{ \
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if (port->type == PORT_SCI) { \
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SCI_OUT(sci_size, sci_offset, value) \
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} else { \
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SCI_OUT(scif_size, scif_offset, value); \
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} \
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}
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#define CPU_SCIF_FNS(name, scif_offset, scif_size) \
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static inline unsigned int sci_##name##_in(struct uart_port *port) \
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{ \
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SCI_IN(scif_size, scif_offset); \
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} \
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static inline void sci_##name##_out(struct uart_port *port, unsigned int value) \
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{ \
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SCI_OUT(scif_size, scif_offset, value); \
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}
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#define CPU_SCI_FNS(name, sci_offset, sci_size) \
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static inline unsigned int sci_##name##_in(struct uart_port* port) \
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{ \
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SCI_IN(sci_size, sci_offset); \
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} \
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static inline void sci_##name##_out(struct uart_port* port, unsigned int value) \
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{ \
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SCI_OUT(sci_size, sci_offset, value); \
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}
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#ifdef CONFIG_CPU_SH3
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#if defined(CONFIG_CPU_SUBTYPE_SH7300) || defined(CONFIG_CPU_SUBTYPE_SH7705)
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#define SCIF_FNS(name, scif_offset, scif_size) \
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CPU_SCIF_FNS(name, scif_offset, scif_size)
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#else
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#define SCIx_FNS(name, sh3_sci_offset, sh3_sci_size, sh4_sci_offset, sh4_sci_size, \
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sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size, \
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h8_sci_offset, h8_sci_size) \
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CPU_SCIx_FNS(name, sh3_sci_offset, sh3_sci_size, sh3_scif_offset, sh3_scif_size)
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#define SCIF_FNS(name, sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size) \
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CPU_SCIF_FNS(name, sh3_scif_offset, sh3_scif_size)
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#endif
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#elif defined(__H8300H__) || defined(__H8300S__)
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#define SCIx_FNS(name, sh3_sci_offset, sh3_sci_size, sh4_sci_offset, sh4_sci_size, \
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sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size, \
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h8_sci_offset, h8_sci_size) \
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CPU_SCI_FNS(name, h8_sci_offset, h8_sci_size)
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#define SCIF_FNS(name, sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size)
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#else
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#define SCIx_FNS(name, sh3_sci_offset, sh3_sci_size, sh4_sci_offset, sh4_sci_size, \
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sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size, \
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h8_sci_offset, h8_sci_size) \
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CPU_SCIx_FNS(name, sh4_sci_offset, sh4_sci_size, sh4_scif_offset, sh4_scif_size)
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#define SCIF_FNS(name, sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size) \
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CPU_SCIF_FNS(name, sh4_scif_offset, sh4_scif_size)
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#endif
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#if defined(CONFIG_CPU_SUBTYPE_SH7300) || defined(CONFIG_CPU_SUBTYPE_SH7705)
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SCIF_FNS(SCSMR, 0x00, 16)
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SCIF_FNS(SCBRR, 0x04, 8)
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SCIF_FNS(SCSCR, 0x08, 16)
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SCIF_FNS(SCTDSR, 0x0c, 8)
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SCIF_FNS(SCFER, 0x10, 16)
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SCIF_FNS(SCxSR, 0x14, 16)
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SCIF_FNS(SCFCR, 0x18, 16)
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SCIF_FNS(SCFDR, 0x1c, 16)
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SCIF_FNS(SCxTDR, 0x20, 8)
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SCIF_FNS(SCxRDR, 0x24, 8)
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SCIF_FNS(SCLSR, 0x24, 16)
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#else
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/* reg SCI/SH3 SCI/SH4 SCIF/SH3 SCIF/SH4 SCI/H8*/
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/* name off sz off sz off sz off sz off sz*/
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SCIx_FNS(SCSMR, 0x00, 8, 0x00, 8, 0x00, 8, 0x00, 16, 0x00, 8)
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SCIx_FNS(SCBRR, 0x02, 8, 0x04, 8, 0x02, 8, 0x04, 8, 0x01, 8)
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SCIx_FNS(SCSCR, 0x04, 8, 0x08, 8, 0x04, 8, 0x08, 16, 0x02, 8)
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SCIx_FNS(SCxTDR, 0x06, 8, 0x0c, 8, 0x06, 8, 0x0C, 8, 0x03, 8)
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SCIx_FNS(SCxSR, 0x08, 8, 0x10, 8, 0x08, 16, 0x10, 16, 0x04, 8)
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SCIx_FNS(SCxRDR, 0x0a, 8, 0x14, 8, 0x0A, 8, 0x14, 8, 0x05, 8)
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SCIF_FNS(SCFCR, 0x0c, 8, 0x18, 16)
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#if defined(CONFIG_CPU_SUBTYPE_SH7760) || defined(CONFIG_CPU_SUBTYPE_SH7780)
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SCIF_FNS(SCTFDR, 0x0e, 16, 0x1C, 16)
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SCIF_FNS(SCRFDR, 0x0e, 16, 0x20, 16)
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SCIF_FNS(SCSPTR, 0, 0, 0x24, 16)
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SCIF_FNS(SCLSR, 0, 0, 0x28, 16)
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#else
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SCIF_FNS(SCFDR, 0x0e, 16, 0x1C, 16)
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SCIF_FNS(SCSPTR, 0, 0, 0x20, 16)
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SCIF_FNS(SCLSR, 0, 0, 0x24, 16)
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#endif
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#endif
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#define sci_in(port, reg) sci_##reg##_in(port)
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#define sci_out(port, reg, value) sci_##reg##_out(port, value)
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/* H8/300 series SCI pins assignment */
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#if defined(__H8300H__) || defined(__H8300S__)
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static const struct __attribute__((packed)) {
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int port; /* GPIO port no */
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unsigned short rx,tx; /* GPIO bit no */
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} h8300_sci_pins[] = {
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#if defined(CONFIG_H83007) || defined(CONFIG_H83068)
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{ /* SCI0 */
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.port = H8300_GPIO_P9,
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.rx = H8300_GPIO_B2,
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.tx = H8300_GPIO_B0,
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},
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{ /* SCI1 */
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.port = H8300_GPIO_P9,
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.rx = H8300_GPIO_B3,
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.tx = H8300_GPIO_B1,
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},
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{ /* SCI2 */
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.port = H8300_GPIO_PB,
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.rx = H8300_GPIO_B7,
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.tx = H8300_GPIO_B6,
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}
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#elif defined(CONFIG_H8S2678)
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{ /* SCI0 */
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.port = H8300_GPIO_P3,
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.rx = H8300_GPIO_B2,
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.tx = H8300_GPIO_B0,
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},
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{ /* SCI1 */
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.port = H8300_GPIO_P3,
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.rx = H8300_GPIO_B3,
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.tx = H8300_GPIO_B1,
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},
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{ /* SCI2 */
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.port = H8300_GPIO_P5,
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.rx = H8300_GPIO_B1,
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.tx = H8300_GPIO_B0,
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}
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#endif
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};
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#endif
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#if defined(CONFIG_CPU_SUBTYPE_SH7708)
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static inline int sci_rxd_in(struct uart_port *port)
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{
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if (port->mapbase == 0xfffffe80)
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return ctrl_inb(SCSPTR)&0x01 ? 1 : 0; /* SCI */
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return 1;
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}
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#elif defined(CONFIG_CPU_SUBTYPE_SH7707) || defined(CONFIG_CPU_SUBTYPE_SH7709)
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static inline int sci_rxd_in(struct uart_port *port)
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{
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if (port->mapbase == 0xfffffe80)
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return ctrl_inb(SCPDR)&0x01 ? 1 : 0; /* SCI */
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if (port->mapbase == 0xa4000150)
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return ctrl_inb(SCPDR)&0x10 ? 1 : 0; /* SCIF */
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if (port->mapbase == 0xa4000140)
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return ctrl_inb(SCPDR)&0x04 ? 1 : 0; /* IRDA */
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return 1;
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}
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#elif defined(CONFIG_CPU_SUBTYPE_SH7705)
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static inline int sci_rxd_in(struct uart_port *port)
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{
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if (port->mapbase == SCIF0)
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return ctrl_inb(SCPDR)&0x04 ? 1 : 0; /* IRDA */
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if (port->mapbase == SCIF2)
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return ctrl_inb(SCPDR)&0x10 ? 1 : 0; /* SCIF */
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return 1;
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}
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#elif defined(CONFIG_CPU_SUBTYPE_SH7750) || \
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defined(CONFIG_CPU_SUBTYPE_SH7751) || \
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defined(CONFIG_CPU_SUBTYPE_SH4_202)
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static inline int sci_rxd_in(struct uart_port *port)
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{
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#ifndef SCIF_ONLY
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if (port->mapbase == 0xffe00000)
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return ctrl_inb(SCSPTR1)&0x01 ? 1 : 0; /* SCI */
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#endif
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#ifndef SCI_ONLY
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if (port->mapbase == 0xffe80000)
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return ctrl_inw(SCSPTR2)&0x0001 ? 1 : 0; /* SCIF */
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#endif
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return 1;
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}
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#elif defined(CONFIG_CPU_SUBTYPE_SH7760)
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static inline int sci_rxd_in(struct uart_port *port)
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{
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if (port->mapbase == 0xfe600000)
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return ctrl_inw(SCSPTR0) & 0x0001 ? 1 : 0; /* SCIF */
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if (port->mapbase == 0xfe610000)
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return ctrl_inw(SCSPTR1) & 0x0001 ? 1 : 0; /* SCIF */
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if (port->mapbase == 0xfe620000)
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return ctrl_inw(SCSPTR2) & 0x0001 ? 1 : 0; /* SCIF */
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}
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#elif defined(CONFIG_CPU_SUBTYPE_SH7300)
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static inline int sci_rxd_in(struct uart_port *port)
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{
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if (port->mapbase == 0xa4430000)
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return ctrl_inb(SCPDR)&0x01 ? 1 : 0; /* SCIF0 */
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return 1;
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}
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#elif defined(CONFIG_CPU_SUBTYPE_SH73180)
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static inline int sci_rxd_in(struct uart_port *port)
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{
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return ctrl_inb(SCPDR)&0x01 ? 1 : 0; /* SCIF0 */
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}
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#elif defined(CONFIG_CPU_SUBTYPE_ST40STB1)
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static inline int sci_rxd_in(struct uart_port *port)
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{
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if (port->mapbase == 0xffe00000)
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return ctrl_inw(SCSPTR1)&0x0001 ? 1 : 0; /* SCIF */
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else
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return ctrl_inw(SCSPTR2)&0x0001 ? 1 : 0; /* SCIF */
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}
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#elif defined(CONFIG_CPU_SUBTYPE_SH5_101) || defined(CONFIG_CPU_SUBTYPE_SH5_103)
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static inline int sci_rxd_in(struct uart_port *port)
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{
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return sci_in(port, SCSPTR)&0x0001 ? 1 : 0; /* SCIF */
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}
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#elif defined(__H8300H__) || defined(__H8300S__)
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static inline int sci_rxd_in(struct uart_port *port)
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{
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int ch = (port->mapbase - SMR0) >> 3;
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return (H8300_SCI_DR(ch) & h8300_sci_pins[ch].rx) ? 1 : 0;
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}
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#elif defined(CONFIG_CPU_SUBTYPE_SH7770)
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static inline int sci_rxd_in(struct uart_port *port)
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{
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if (port->mapbase == 0xff923000)
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return ctrl_inw(SCSPTR0) & 0x0001 ? 1 : 0; /* SCIF */
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if (port->mapbase == 0xff924000)
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return ctrl_inw(SCSPTR1) & 0x0001 ? 1 : 0; /* SCIF */
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if (port->mapbase == 0xff925000)
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return ctrl_inw(SCSPTR2) & 0x0001 ? 1 : 0; /* SCIF */
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}
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#elif defined(CONFIG_CPU_SUBTYPE_SH7780)
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static inline int sci_rxd_in(struct uart_port *port)
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{
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if (port->mapbase == 0xffe00000)
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return ctrl_inw(SCSPTR0) & 0x0001 ? 1 : 0; /* SCIF */
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if (port->mapbase == 0xffe10000)
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return ctrl_inw(SCSPTR1) & 0x0001 ? 1 : 0; /* SCIF */
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}
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#endif
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/*
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* Values for the BitRate Register (SCBRR)
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*
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* The values are actually divisors for a frequency which can
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* be internal to the SH3 (14.7456MHz) or derived from an external
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* clock source. This driver assumes the internal clock is used;
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* to support using an external clock source, config options or
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* possibly command-line options would need to be added.
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*
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|
* Also, to support speeds below 2400 (why?) the lower 2 bits of
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* the SCSMR register would also need to be set to non-zero values.
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*
|
|
* -- Greg Banks 27Feb2000
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|
*
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|
* Answer: The SCBRR register is only eight bits, and the value in
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* it gets larger with lower baud rates. At around 2400 (depending on
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* the peripherial module clock) you run out of bits. However the
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* lower two bits of SCSMR allow the module clock to be divided down,
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* scaling the value which is needed in SCBRR.
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*
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* -- Stuart Menefy - 23 May 2000
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*
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* I meant, why would anyone bother with bitrates below 2400.
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*
|
|
* -- Greg Banks - 7Jul2000
|
|
*
|
|
* You "speedist"! How will I use my 110bps ASR-33 teletype with paper
|
|
* tape reader as a console!
|
|
*
|
|
* -- Mitch Davis - 15 Jul 2000
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|
*/
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#if defined(CONFIG_CPU_SUBTYPE_SH7300) || defined(CONFIG_CPU_SUBTYPE_SH7780)
|
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#define SCBRR_VALUE(bps, clk) ((clk+16*bps)/(16*bps)-1)
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#elif defined(CONFIG_CPU_SUBTYPE_SH7705)
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#define SCBRR_VALUE(bps, clk) (((clk*2)+16*bps)/(32*bps)-1)
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#elif defined(__H8300H__) || defined(__H8300S__)
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#define SCBRR_VALUE(bps) (((CONFIG_CPU_CLOCK*1000/32)/bps)-1)
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#elif defined(CONFIG_SUPERH64)
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#define SCBRR_VALUE(bps) ((current_cpu_data.module_clock+16*bps)/(32*bps)-1)
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#else /* Generic SH */
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#define SCBRR_VALUE(bps, clk) ((clk+16*bps)/(32*bps)-1)
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#endif
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