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serial: sh: Add support R8A7790
This adds the preset value to register, and setup of baudrate. Signed-off-by: Kouei Abe <kouei.abe.cp@renesas.com> Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
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2 changed files with 14 additions and 0 deletions
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@ -1,5 +1,6 @@
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/*
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* SuperH SCIF device driver.
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* Copyright (C) 2013 Renesas Electronics Corporation
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* Copyright (C) 2007,2008,2010 Nobuhiro Iwamatsu
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* Copyright (C) 2002 - 2008 Paul Mundt
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*
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@ -224,6 +224,9 @@ struct uart_port {
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# define SCSPTR3 0xffc60020 /* 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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#elif defined(CONFIG_R8A7790)
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# define SCIF_ORER 0x0001
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# define SCSCR_INIT(port) 0x32 /* TIE=0,RIE=0,TE=1,RE=1,REIE=0, */
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#else
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# error CPU subtype not defined
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#endif
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@ -298,6 +301,9 @@ struct uart_port {
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/* SH7763 SCIF2 support */
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# define SCIF2_RFDC_MASK 0x001f
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# define SCIF2_TXROOM_MAX 16
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#elif defined(CONFIG_R8A7790)
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# define SCIF_ERRORS (SCIF_PER | SCIF_FER | SCIF_ER | SCIF_BRK)
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# define SCIF_RFDC_MASK 0x003f
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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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@ -579,6 +585,10 @@ SCIF_FNS(SCSPTR, 0, 0, 0, 0)
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#else
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SCIF_FNS(SCSPTR, 0, 0, 0x20, 16)
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#endif
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#if defined(CONFIG_R8A7790)
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SCIF_FNS(DL, 0, 0, 0x30, 16)
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SCIF_FNS(CKS, 0, 0, 0x34, 16)
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#endif
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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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@ -720,6 +730,9 @@ static inline int scbrr_calc(struct uart_port port, int bps, int clk)
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#define SCBRR_VALUE(bps, clk) scbrr_calc(sh_sci, bps, clk)
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#elif defined(__H8300H__) || defined(__H8300S__)
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#define SCBRR_VALUE(bps, clk) (((clk*1000/32)/bps)-1)
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#elif defined(CONFIG_R8A7790)
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#define SCBRR DL
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#define SCBRR_VALUE(bps, clk) (clk / bps / 16)
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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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