1 /* 2 * This file is part of wl18xx 3 * 4 * Copyright (C) 2011 Texas Instruments 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License 8 * version 2 as published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope that it will be useful, but 11 * WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 18 * 02110-1301 USA 19 * 20 */ 21 22 #include "../wlcore/wlcore.h" 23 #include "../wlcore/io.h" 24 25 #include "io.h" 26 27 int wl18xx_top_reg_write(struct wl1271 *wl, int addr, u16 val) 28 { 29 u32 tmp; 30 int ret; 31 32 if (WARN_ON(addr % 2)) 33 return -EINVAL; 34 35 if ((addr % 4) == 0) { 36 ret = wlcore_read32(wl, addr, &tmp); 37 if (ret < 0) 38 goto out; 39 40 tmp = (tmp & 0xffff0000) | val; 41 ret = wlcore_write32(wl, addr, tmp); 42 } else { 43 ret = wlcore_read32(wl, addr - 2, &tmp); 44 if (ret < 0) 45 goto out; 46 47 tmp = (tmp & 0xffff) | (val << 16); 48 ret = wlcore_write32(wl, addr - 2, tmp); 49 } 50 51 out: 52 return ret; 53 } 54 55 int wl18xx_top_reg_read(struct wl1271 *wl, int addr, u16 *out) 56 { 57 u32 val = 0; 58 int ret; 59 60 if (WARN_ON(addr % 2)) 61 return -EINVAL; 62 63 if ((addr % 4) == 0) { 64 /* address is 4-bytes aligned */ 65 ret = wlcore_read32(wl, addr, &val); 66 if (ret >= 0 && out) 67 *out = val & 0xffff; 68 } else { 69 ret = wlcore_read32(wl, addr - 2, &val); 70 if (ret >= 0 && out) 71 *out = (val & 0xffff0000) >> 16; 72 } 73 74 return ret; 75 } 76