diff options
Diffstat (limited to 'arch/x86/cpu/sc520/sc520_ssi.c')
-rw-r--r-- | arch/x86/cpu/sc520/sc520_ssi.c | 93 |
1 files changed, 0 insertions, 93 deletions
diff --git a/arch/x86/cpu/sc520/sc520_ssi.c b/arch/x86/cpu/sc520/sc520_ssi.c deleted file mode 100644 index cc601e5..0000000 --- a/arch/x86/cpu/sc520/sc520_ssi.c +++ /dev/null @@ -1,93 +0,0 @@ -/* - * (C) Copyright 2002 - * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se> - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - -#include <common.h> -#include <asm/io.h> -#include <asm/arch/ssi.h> -#include <asm/arch/sc520.h> - -int ssi_set_interface(int freq, int lsb_first, int inv_clock, int inv_phase) -{ - u8 temp = 0; - - if (freq >= 8192) - temp |= CTL_CLK_SEL_4; - else if (freq >= 4096) - temp |= CTL_CLK_SEL_8; - else if (freq >= 2048) - temp |= CTL_CLK_SEL_16; - else if (freq >= 1024) - temp |= CTL_CLK_SEL_32; - else if (freq >= 512) - temp |= CTL_CLK_SEL_64; - else if (freq >= 256) - temp |= CTL_CLK_SEL_128; - else if (freq >= 128) - temp |= CTL_CLK_SEL_256; - else - temp |= CTL_CLK_SEL_512; - - if (!lsb_first) - temp |= MSBF_ENB; - - if (inv_clock) - temp |= CLK_INV_ENB; - - if (inv_phase) - temp |= PHS_INV_ENB; - - writeb(temp, &sc520_mmcr->ssictl); - - return 0; -} - -u8 ssi_txrx_byte(u8 data) -{ - writeb(data, &sc520_mmcr->ssixmit); - while (readb(&sc520_mmcr->ssista) & SSISTA_BSY) - ; - writeb(SSICMD_CMD_SEL_XMITRCV, &sc520_mmcr->ssicmd); - while (readb(&sc520_mmcr->ssista) & SSISTA_BSY) - ; - - return readb(&sc520_mmcr->ssircv); -} - -void ssi_tx_byte(u8 data) -{ - writeb(data, &sc520_mmcr->ssixmit); - while (readb(&sc520_mmcr->ssista) & SSISTA_BSY) - ; - writeb(SSICMD_CMD_SEL_XMIT, &sc520_mmcr->ssicmd); -} - -u8 ssi_rx_byte(void) -{ - while (readb(&sc520_mmcr->ssista) & SSISTA_BSY) - ; - writeb(SSICMD_CMD_SEL_RCV, &sc520_mmcr->ssicmd); - while (readb(&sc520_mmcr->ssista) & SSISTA_BSY) - ; - - return readb(&sc520_mmcr->ssircv); -} |