2 * Copyright (c) 2010 Broadcom Corporation
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19 #include <linux/kernel.h>
20 #include <linux/module.h>
21 #include <linux/pci.h>
36 #include "phy/wlc_phy_hal.h"
38 #include "wlc_channel.h"
40 #include "wl_export.h"
41 #include "wlc_phy_shim.h"
42 #include "wlc_antsel.h"
45 #define WLC_ANTSEL_11N_0(ant) ((((ant) & ANT_SELCFG_MASK) >> 4) & 0xf)
46 #define WLC_ANTSEL_11N_1(ant) (((ant) & ANT_SELCFG_MASK) & 0xf)
47 #define WLC_ANTIDX_11N(ant) (((WLC_ANTSEL_11N_0(ant)) << 2) + (WLC_ANTSEL_11N_1(ant)))
48 #define WLC_ANT_ISAUTO_11N(ant) (((ant) & ANT_SELCFG_AUTO) == ANT_SELCFG_AUTO)
49 #define WLC_ANTSEL_11N(ant) ((ant) & ANT_SELCFG_MASK)
52 /* defines for no boardlevel antenna diversity */
53 #define ANT_SELCFG_DEF_2x2 0x01 /* default antenna configuration */
55 /* 2x3 antdiv defines and tables for GPIO communication */
56 #define ANT_SELCFG_NUM_2x3 3
57 #define ANT_SELCFG_DEF_2x3 0x01 /* default antenna configuration */
59 /* 2x4 antdiv rev4 defines and tables for GPIO communication */
60 #define ANT_SELCFG_NUM_2x4 4
61 #define ANT_SELCFG_DEF_2x4 0x02 /* default antenna configuration */
63 /* static functions */
64 static int wlc_antsel_cfgupd(struct antsel_info *asi, wlc_antselcfg_t *antsel);
65 static u8 wlc_antsel_id2antcfg(struct antsel_info *asi, u8 id);
66 static u16 wlc_antsel_antcfg2antsel(struct antsel_info *asi, u8 ant_cfg);
67 static void wlc_antsel_init_cfg(struct antsel_info *asi,
68 wlc_antselcfg_t *antsel,
71 const u16 mimo_2x4_div_antselpat_tbl[] = {
72 0, 0, 0x9, 0xa, /* ant0: 0 ant1: 2,3 */
73 0, 0, 0x5, 0x6, /* ant0: 1 ant1: 2,3 */
74 0, 0, 0, 0, /* n.a. */
78 const u8 mimo_2x4_div_antselid_tbl[16] = {
79 0, 0, 0, 0, 0, 2, 3, 0,
80 0, 0, 1, 0, 0, 0, 0, 0 /* pat to antselid */
83 const u16 mimo_2x3_div_antselpat_tbl[] = {
84 16, 0, 1, 16, /* ant0: 0 ant1: 1,2 */
85 16, 16, 16, 16, /* n.a. */
86 16, 2, 16, 16, /* ant0: 2 ant1: 1 */
87 16, 16, 16, 16 /* n.a. */
90 const u8 mimo_2x3_div_antselid_tbl[16] = {
91 0, 1, 2, 0, 0, 0, 0, 0,
92 0, 0, 0, 0, 0, 0, 0, 0 /* pat to antselid */
95 struct antsel_info *wlc_antsel_attach(struct wlc_info *wlc)
97 struct antsel_info *asi;
99 asi = kzalloc(sizeof(struct antsel_info), GFP_ATOMIC);
101 wiphy_err(wlc->wiphy, "wl%d: wlc_antsel_attach: out of mem\n",
108 asi->antsel_type = ANTSEL_NA;
109 asi->antsel_avail = false;
110 asi->antsel_antswitch = (u8) getintvar(asi->pub->vars, "antswitch");
112 if ((asi->pub->sromrev >= 4) && (asi->antsel_antswitch != 0)) {
113 switch (asi->antsel_antswitch) {
114 case ANTSWITCH_TYPE_1:
115 case ANTSWITCH_TYPE_2:
116 case ANTSWITCH_TYPE_3:
117 /* 4321/2 board with 2x3 switch logic */
118 asi->antsel_type = ANTSEL_2x3;
119 /* Antenna selection availability */
120 if (((u16) getintvar(asi->pub->vars, "aa2g") == 7) ||
121 ((u16) getintvar(asi->pub->vars, "aa5g") == 7)) {
122 asi->antsel_avail = true;
124 if (((u16) getintvar(asi->pub->vars, "aa2g") ==
126 || ((u16) getintvar(asi->pub->vars, "aa5g")
128 asi->antsel_avail = false;
130 asi->antsel_avail = false;
131 wiphy_err(wlc->wiphy, "wlc_antsel_attach: 2o3 "
132 "board cfg invalid\n");
138 } else if ((asi->pub->sromrev == 4) &&
139 ((u16) getintvar(asi->pub->vars, "aa2g") == 7) &&
140 ((u16) getintvar(asi->pub->vars, "aa5g") == 0)) {
141 /* hack to match old 4321CB2 cards with 2of3 antenna switch */
142 asi->antsel_type = ANTSEL_2x3;
143 asi->antsel_avail = true;
144 } else if (asi->pub->boardflags2 & BFL2_2X4_DIV) {
145 asi->antsel_type = ANTSEL_2x4;
146 asi->antsel_avail = true;
149 /* Set the antenna selection type for the low driver */
150 wlc_bmac_antsel_type_set(wlc->hw, asi->antsel_type);
152 /* Init (auto/manual) antenna selection */
153 wlc_antsel_init_cfg(asi, &asi->antcfg_11n, true);
154 wlc_antsel_init_cfg(asi, &asi->antcfg_cur, true);
159 void wlc_antsel_detach(struct antsel_info *asi)
164 void wlc_antsel_init(struct antsel_info *asi)
166 if ((asi->antsel_type == ANTSEL_2x3) ||
167 (asi->antsel_type == ANTSEL_2x4))
168 wlc_antsel_cfgupd(asi, &asi->antcfg_11n);
171 /* boardlevel antenna selection: init antenna selection structure */
173 wlc_antsel_init_cfg(struct antsel_info *asi, wlc_antselcfg_t *antsel,
176 if (asi->antsel_type == ANTSEL_2x3) {
177 u8 antcfg_def = ANT_SELCFG_DEF_2x3 |
178 ((asi->antsel_avail && auto_sel) ? ANT_SELCFG_AUTO : 0);
179 antsel->ant_config[ANT_SELCFG_TX_DEF] = antcfg_def;
180 antsel->ant_config[ANT_SELCFG_TX_UNICAST] = antcfg_def;
181 antsel->ant_config[ANT_SELCFG_RX_DEF] = antcfg_def;
182 antsel->ant_config[ANT_SELCFG_RX_UNICAST] = antcfg_def;
183 antsel->num_antcfg = ANT_SELCFG_NUM_2x3;
185 } else if (asi->antsel_type == ANTSEL_2x4) {
187 antsel->ant_config[ANT_SELCFG_TX_DEF] = ANT_SELCFG_DEF_2x4;
188 antsel->ant_config[ANT_SELCFG_TX_UNICAST] = ANT_SELCFG_DEF_2x4;
189 antsel->ant_config[ANT_SELCFG_RX_DEF] = ANT_SELCFG_DEF_2x4;
190 antsel->ant_config[ANT_SELCFG_RX_UNICAST] = ANT_SELCFG_DEF_2x4;
191 antsel->num_antcfg = ANT_SELCFG_NUM_2x4;
193 } else { /* no antenna selection available */
195 antsel->ant_config[ANT_SELCFG_TX_DEF] = ANT_SELCFG_DEF_2x2;
196 antsel->ant_config[ANT_SELCFG_TX_UNICAST] = ANT_SELCFG_DEF_2x2;
197 antsel->ant_config[ANT_SELCFG_RX_DEF] = ANT_SELCFG_DEF_2x2;
198 antsel->ant_config[ANT_SELCFG_RX_UNICAST] = ANT_SELCFG_DEF_2x2;
199 antsel->num_antcfg = 0;
204 wlc_antsel_antcfg_get(struct antsel_info *asi, bool usedef, bool sel,
205 u8 antselid, u8 fbantselid, u8 *antcfg,
210 /* if use default, assign it and return */
212 *antcfg = asi->antcfg_11n.ant_config[ANT_SELCFG_TX_DEF];
218 *antcfg = asi->antcfg_11n.ant_config[ANT_SELCFG_TX_UNICAST];
222 ant = asi->antcfg_11n.ant_config[ANT_SELCFG_TX_UNICAST];
223 if ((ant & ANT_SELCFG_AUTO) == ANT_SELCFG_AUTO) {
224 *antcfg = wlc_antsel_id2antcfg(asi, antselid);
225 *fbantcfg = wlc_antsel_id2antcfg(asi, fbantselid);
228 asi->antcfg_11n.ant_config[ANT_SELCFG_TX_UNICAST];
235 /* boardlevel antenna selection: convert mimo_antsel (ucode interface) to id */
236 u8 wlc_antsel_antsel2id(struct antsel_info *asi, u16 antsel)
240 if (asi->antsel_type == ANTSEL_2x4) {
241 /* 2x4 antenna diversity board, 4 cfgs: 0-2 0-3 1-2 1-3 */
242 antselid = mimo_2x4_div_antselid_tbl[(antsel & 0xf)];
245 } else if (asi->antsel_type == ANTSEL_2x3) {
246 /* 2x3 antenna selection, 3 cfgs: 0-1 0-2 2-1 */
247 antselid = mimo_2x3_div_antselid_tbl[(antsel & 0xf)];
254 /* boardlevel antenna selection: convert id to ant_cfg */
255 static u8 wlc_antsel_id2antcfg(struct antsel_info *asi, u8 id)
257 u8 antcfg = ANT_SELCFG_DEF_2x2;
259 if (asi->antsel_type == ANTSEL_2x4) {
260 /* 2x4 antenna diversity board, 4 cfgs: 0-2 0-3 1-2 1-3 */
261 antcfg = (((id & 0x2) << 3) | ((id & 0x1) + 2));
264 } else if (asi->antsel_type == ANTSEL_2x3) {
265 /* 2x3 antenna selection, 3 cfgs: 0-1 0-2 2-1 */
266 antcfg = (((id & 0x02) << 4) | ((id & 0x1) + 1));
273 /* boardlevel antenna selection: convert ant_cfg to mimo_antsel (ucode interface) */
274 static u16 wlc_antsel_antcfg2antsel(struct antsel_info *asi, u8 ant_cfg)
276 u8 idx = WLC_ANTIDX_11N(WLC_ANTSEL_11N(ant_cfg));
279 if (asi->antsel_type == ANTSEL_2x4) {
280 /* 2x4 antenna diversity board, 4 cfgs: 0-2 0-3 1-2 1-3 */
281 mimo_antsel = (mimo_2x4_div_antselpat_tbl[idx] & 0xf);
284 } else if (asi->antsel_type == ANTSEL_2x3) {
285 /* 2x3 antenna selection, 3 cfgs: 0-1 0-2 2-1 */
286 mimo_antsel = (mimo_2x3_div_antselpat_tbl[idx] & 0xf);
293 /* boardlevel antenna selection: ucode interface control */
294 static int wlc_antsel_cfgupd(struct antsel_info *asi, wlc_antselcfg_t *antsel)
296 struct wlc_info *wlc = asi->wlc;
300 /* 1) Update TX antconfig for all frames that are not unicast data
303 ant_cfg = antsel->ant_config[ANT_SELCFG_TX_DEF];
304 mimo_antsel = wlc_antsel_antcfg2antsel(asi, ant_cfg);
305 wlc_write_shm(wlc, M_MIMO_ANTSEL_TXDFLT, mimo_antsel);
306 /* Update driver stats for currently selected default tx/rx antenna config */
307 asi->antcfg_cur.ant_config[ANT_SELCFG_TX_DEF] = ant_cfg;
309 /* 2) Update RX antconfig for all frames that are not unicast data
312 ant_cfg = antsel->ant_config[ANT_SELCFG_RX_DEF];
313 mimo_antsel = wlc_antsel_antcfg2antsel(asi, ant_cfg);
314 wlc_write_shm(wlc, M_MIMO_ANTSEL_RXDFLT, mimo_antsel);
315 /* Update driver stats for currently selected default tx/rx antenna config */
316 asi->antcfg_cur.ant_config[ANT_SELCFG_RX_DEF] = ant_cfg;