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.
21 #include <linux/kernel.h>
34 #include <wlc_mac80211.h>
36 #include <wlc_phy_hal.h>
37 #include <wl_export.h>
38 #include <wlc_antsel.h>
39 #include <wlc_phy_shim.h>
42 #define WLC_ANTSEL_11N_0(ant) ((((ant) & ANT_SELCFG_MASK) >> 4) & 0xf)
43 #define WLC_ANTSEL_11N_1(ant) (((ant) & ANT_SELCFG_MASK) & 0xf)
44 #define WLC_ANTIDX_11N(ant) (((WLC_ANTSEL_11N_0(ant)) << 2) + (WLC_ANTSEL_11N_1(ant)))
45 #define WLC_ANT_ISAUTO_11N(ant) (((ant) & ANT_SELCFG_AUTO) == ANT_SELCFG_AUTO)
46 #define WLC_ANTSEL_11N(ant) ((ant) & ANT_SELCFG_MASK)
49 /* defines for no boardlevel antenna diversity */
50 #define ANT_SELCFG_DEF_2x2 0x01 /* default antenna configuration */
52 /* 2x3 antdiv defines and tables for GPIO communication */
53 #define ANT_SELCFG_NUM_2x3 3
54 #define ANT_SELCFG_DEF_2x3 0x01 /* default antenna configuration */
56 /* 2x4 antdiv rev4 defines and tables for GPIO communication */
57 #define ANT_SELCFG_NUM_2x4 4
58 #define ANT_SELCFG_DEF_2x4 0x02 /* default antenna configuration */
60 /* static functions */
61 static int wlc_antsel_cfgupd(antsel_info_t *asi, wlc_antselcfg_t *antsel);
62 static u8 wlc_antsel_id2antcfg(antsel_info_t *asi, u8 id);
63 static u16 wlc_antsel_antcfg2antsel(antsel_info_t *asi, u8 ant_cfg);
64 static void wlc_antsel_init_cfg(antsel_info_t *asi, wlc_antselcfg_t *antsel,
67 const u16 mimo_2x4_div_antselpat_tbl[] = {
68 0, 0, 0x9, 0xa, /* ant0: 0 ant1: 2,3 */
69 0, 0, 0x5, 0x6, /* ant0: 1 ant1: 2,3 */
70 0, 0, 0, 0, /* n.a. */
74 const u8 mimo_2x4_div_antselid_tbl[16] = {
75 0, 0, 0, 0, 0, 2, 3, 0,
76 0, 0, 1, 0, 0, 0, 0, 0 /* pat to antselid */
79 const u16 mimo_2x3_div_antselpat_tbl[] = {
80 16, 0, 1, 16, /* ant0: 0 ant1: 1,2 */
81 16, 16, 16, 16, /* n.a. */
82 16, 2, 16, 16, /* ant0: 2 ant1: 1 */
83 16, 16, 16, 16 /* n.a. */
86 const u8 mimo_2x3_div_antselid_tbl[16] = {
87 0, 1, 2, 0, 0, 0, 0, 0,
88 0, 0, 0, 0, 0, 0, 0, 0 /* pat to antselid */
91 antsel_info_t *wlc_antsel_attach(wlc_info_t *wlc, osl_t *osh,
93 wlc_hw_info_t *wlc_hw) {
96 asi = kzalloc(sizeof(antsel_info_t), GFP_ATOMIC);
98 WL_ERROR(("wl%d: wlc_antsel_attach: out of mem\n", pub->unit));
104 asi->antsel_type = ANTSEL_NA;
105 asi->antsel_avail = false;
106 asi->antsel_antswitch = (u8) getintvar(asi->pub->vars, "antswitch");
108 if ((asi->pub->sromrev >= 4) && (asi->antsel_antswitch != 0)) {
109 switch (asi->antsel_antswitch) {
110 case ANTSWITCH_TYPE_1:
111 case ANTSWITCH_TYPE_2:
112 case ANTSWITCH_TYPE_3:
113 /* 4321/2 board with 2x3 switch logic */
114 asi->antsel_type = ANTSEL_2x3;
115 /* Antenna selection availability */
116 if (((u16) getintvar(asi->pub->vars, "aa2g") == 7) ||
117 ((u16) getintvar(asi->pub->vars, "aa5g") == 7)) {
118 asi->antsel_avail = true;
120 if (((u16) getintvar(asi->pub->vars, "aa2g") ==
122 || ((u16) getintvar(asi->pub->vars, "aa5g")
124 asi->antsel_avail = false;
126 asi->antsel_avail = false;
127 WL_ERROR(("wlc_antsel_attach: 2o3 board cfg invalid\n"));
134 } else if ((asi->pub->sromrev == 4) &&
135 ((u16) getintvar(asi->pub->vars, "aa2g") == 7) &&
136 ((u16) getintvar(asi->pub->vars, "aa5g") == 0)) {
137 /* hack to match old 4321CB2 cards with 2of3 antenna switch */
138 asi->antsel_type = ANTSEL_2x3;
139 asi->antsel_avail = true;
140 } else if (asi->pub->boardflags2 & BFL2_2X4_DIV) {
141 asi->antsel_type = ANTSEL_2x4;
142 asi->antsel_avail = true;
145 /* Set the antenna selection type for the low driver */
146 wlc_bmac_antsel_type_set(wlc_hw, asi->antsel_type);
148 /* Init (auto/manual) antenna selection */
149 wlc_antsel_init_cfg(asi, &asi->antcfg_11n, true);
150 wlc_antsel_init_cfg(asi, &asi->antcfg_cur, true);
155 void wlc_antsel_detach(antsel_info_t *asi)
163 void wlc_antsel_init(antsel_info_t *asi)
165 if ((asi->antsel_type == ANTSEL_2x3) ||
166 (asi->antsel_type == ANTSEL_2x4))
167 wlc_antsel_cfgupd(asi, &asi->antcfg_11n);
170 /* boardlevel antenna selection: init antenna selection structure */
172 wlc_antsel_init_cfg(antsel_info_t *asi, wlc_antselcfg_t *antsel,
175 if (asi->antsel_type == ANTSEL_2x3) {
176 u8 antcfg_def = ANT_SELCFG_DEF_2x3 |
177 ((asi->antsel_avail && auto_sel) ? ANT_SELCFG_AUTO : 0);
178 antsel->ant_config[ANT_SELCFG_TX_DEF] = antcfg_def;
179 antsel->ant_config[ANT_SELCFG_TX_UNICAST] = antcfg_def;
180 antsel->ant_config[ANT_SELCFG_RX_DEF] = antcfg_def;
181 antsel->ant_config[ANT_SELCFG_RX_UNICAST] = antcfg_def;
182 antsel->num_antcfg = ANT_SELCFG_NUM_2x3;
184 } else if (asi->antsel_type == ANTSEL_2x4) {
186 antsel->ant_config[ANT_SELCFG_TX_DEF] = ANT_SELCFG_DEF_2x4;
187 antsel->ant_config[ANT_SELCFG_TX_UNICAST] = ANT_SELCFG_DEF_2x4;
188 antsel->ant_config[ANT_SELCFG_RX_DEF] = ANT_SELCFG_DEF_2x4;
189 antsel->ant_config[ANT_SELCFG_RX_UNICAST] = ANT_SELCFG_DEF_2x4;
190 antsel->num_antcfg = ANT_SELCFG_NUM_2x4;
192 } else { /* no antenna selection available */
194 antsel->ant_config[ANT_SELCFG_TX_DEF] = ANT_SELCFG_DEF_2x2;
195 antsel->ant_config[ANT_SELCFG_TX_UNICAST] = ANT_SELCFG_DEF_2x2;
196 antsel->ant_config[ANT_SELCFG_RX_DEF] = ANT_SELCFG_DEF_2x2;
197 antsel->ant_config[ANT_SELCFG_RX_UNICAST] = ANT_SELCFG_DEF_2x2;
198 antsel->num_antcfg = 0;
203 wlc_antsel_antcfg_get(antsel_info_t *asi, bool usedef, bool sel,
204 u8 antselid, u8 fbantselid, u8 *antcfg,
209 /* if use default, assign it and return */
211 *antcfg = asi->antcfg_11n.ant_config[ANT_SELCFG_TX_DEF];
217 *antcfg = asi->antcfg_11n.ant_config[ANT_SELCFG_TX_UNICAST];
221 ant = asi->antcfg_11n.ant_config[ANT_SELCFG_TX_UNICAST];
222 if ((ant & ANT_SELCFG_AUTO) == ANT_SELCFG_AUTO) {
223 *antcfg = wlc_antsel_id2antcfg(asi, antselid);
224 *fbantcfg = wlc_antsel_id2antcfg(asi, fbantselid);
227 asi->antcfg_11n.ant_config[ANT_SELCFG_TX_UNICAST];
234 /* boardlevel antenna selection: convert mimo_antsel (ucode interface) to id */
235 u8 wlc_antsel_antsel2id(antsel_info_t *asi, u16 antsel)
239 if (asi->antsel_type == ANTSEL_2x4) {
240 /* 2x4 antenna diversity board, 4 cfgs: 0-2 0-3 1-2 1-3 */
241 antselid = mimo_2x4_div_antselid_tbl[(antsel & 0xf)];
244 } else if (asi->antsel_type == ANTSEL_2x3) {
245 /* 2x3 antenna selection, 3 cfgs: 0-1 0-2 2-1 */
246 antselid = mimo_2x3_div_antselid_tbl[(antsel & 0xf)];
253 /* boardlevel antenna selection: convert id to ant_cfg */
254 static u8 wlc_antsel_id2antcfg(antsel_info_t *asi, u8 id)
256 u8 antcfg = ANT_SELCFG_DEF_2x2;
258 if (asi->antsel_type == ANTSEL_2x4) {
259 /* 2x4 antenna diversity board, 4 cfgs: 0-2 0-3 1-2 1-3 */
260 antcfg = (((id & 0x2) << 3) | ((id & 0x1) + 2));
263 } else if (asi->antsel_type == ANTSEL_2x3) {
264 /* 2x3 antenna selection, 3 cfgs: 0-1 0-2 2-1 */
265 antcfg = (((id & 0x02) << 4) | ((id & 0x1) + 1));
272 /* boardlevel antenna selection: convert ant_cfg to mimo_antsel (ucode interface) */
273 static u16 wlc_antsel_antcfg2antsel(antsel_info_t *asi, u8 ant_cfg)
275 u8 idx = WLC_ANTIDX_11N(WLC_ANTSEL_11N(ant_cfg));
278 if (asi->antsel_type == ANTSEL_2x4) {
279 /* 2x4 antenna diversity board, 4 cfgs: 0-2 0-3 1-2 1-3 */
280 mimo_antsel = (mimo_2x4_div_antselpat_tbl[idx] & 0xf);
283 } else if (asi->antsel_type == ANTSEL_2x3) {
284 /* 2x3 antenna selection, 3 cfgs: 0-1 0-2 2-1 */
285 mimo_antsel = (mimo_2x3_div_antselpat_tbl[idx] & 0xf);
292 /* boardlevel antenna selection: ucode interface control */
293 static int wlc_antsel_cfgupd(antsel_info_t *asi, wlc_antselcfg_t *antsel)
295 wlc_info_t *wlc = asi->wlc;
299 ASSERT(asi->antsel_type != ANTSEL_NA);
301 /* 1) Update TX antconfig for all frames that are not unicast data
304 ant_cfg = antsel->ant_config[ANT_SELCFG_TX_DEF];
305 mimo_antsel = wlc_antsel_antcfg2antsel(asi, ant_cfg);
306 wlc_write_shm(wlc, M_MIMO_ANTSEL_TXDFLT, mimo_antsel);
307 /* Update driver stats for currently selected default tx/rx antenna config */
308 asi->antcfg_cur.ant_config[ANT_SELCFG_TX_DEF] = ant_cfg;
310 /* 2) Update RX antconfig for all frames that are not unicast data
313 ant_cfg = antsel->ant_config[ANT_SELCFG_RX_DEF];
314 mimo_antsel = wlc_antsel_antcfg2antsel(asi, ant_cfg);
315 wlc_write_shm(wlc, M_MIMO_ANTSEL_RXDFLT, mimo_antsel);
316 /* Update driver stats for currently selected default tx/rx antenna config */
317 asi->antcfg_cur.ant_config[ANT_SELCFG_RX_DEF] = ant_cfg;
322 #endif /* WLANTSEL */