76 lines
1.7 KiB
C
76 lines
1.7 KiB
C
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/*
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* This file is part of wl18xx
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*
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* Copyright (C) 2011 Texas Instruments
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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*/
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#include "../wlcore/wlcore.h"
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#include "../wlcore/io.h"
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#include "io.h"
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int wl18xx_top_reg_write(struct wl1271 *wl, int addr, u16 val)
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{
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u32 tmp;
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int ret;
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if (WARN_ON(addr % 2))
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return -EINVAL;
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if ((addr % 4) == 0) {
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ret = wlcore_read32(wl, addr, &tmp);
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if (ret < 0)
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goto out;
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tmp = (tmp & 0xffff0000) | val;
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ret = wlcore_write32(wl, addr, tmp);
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} else {
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ret = wlcore_read32(wl, addr - 2, &tmp);
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if (ret < 0)
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goto out;
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tmp = (tmp & 0xffff) | (val << 16);
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ret = wlcore_write32(wl, addr - 2, tmp);
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}
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out:
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return ret;
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}
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int wl18xx_top_reg_read(struct wl1271 *wl, int addr, u16 *out)
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{
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u32 val = 0;
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int ret;
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if (WARN_ON(addr % 2))
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return -EINVAL;
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if ((addr % 4) == 0) {
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/* address is 4-bytes aligned */
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ret = wlcore_read32(wl, addr, &val);
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if (ret >= 0 && out)
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*out = val & 0xffff;
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} else {
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ret = wlcore_read32(wl, addr - 2, &val);
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if (ret >= 0 && out)
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*out = (val & 0xffff0000) >> 16;
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}
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return ret;
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}
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