xref: /linux/drivers/net/wireless/realtek/rtlwifi/rtl8192se/rf.c (revision cbecf716ca618fd44feda6bd9a64a8179d031fc5)
1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2009-2012  Realtek Corporation.*/
3 
4 #include "../wifi.h"
5 #include "reg.h"
6 #include "def.h"
7 #include "phy.h"
8 #include "rf.h"
9 #include "dm.h"
10 
11 
_rtl92s_get_powerbase(struct ieee80211_hw * hw,u8 * p_pwrlevel,u8 chnl,u32 * ofdmbase,u32 * mcsbase,u8 * p_final_pwridx)12 static void _rtl92s_get_powerbase(struct ieee80211_hw *hw, u8 *p_pwrlevel,
13 				  u8 chnl, u32 *ofdmbase, u32 *mcsbase,
14 				  u8 *p_final_pwridx)
15 {
16 	struct rtl_priv *rtlpriv = rtl_priv(hw);
17 	struct rtl_phy *rtlphy = &(rtlpriv->phy);
18 	struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
19 	u32 pwrbase0, pwrbase1;
20 	u8 legacy_pwrdiff = 0, ht20_pwrdiff = 0;
21 	u8 i, pwrlevel[4];
22 
23 	for (i = 0; i < 2; i++)
24 		pwrlevel[i] = p_pwrlevel[i];
25 
26 	/* We only care about the path A for legacy. */
27 	if (rtlefuse->eeprom_version < 2) {
28 		pwrbase0 = pwrlevel[0] + (rtlefuse->legacy_ht_txpowerdiff & 0xf);
29 	} else {
30 		legacy_pwrdiff = rtlefuse->txpwr_legacyhtdiff
31 						[RF90_PATH_A][chnl - 1];
32 
33 		/* For legacy OFDM, tx pwr always > HT OFDM pwr.
34 		 * We do not care Path B
35 		 * legacy OFDM pwr diff. NO BB register
36 		 * to notify HW. */
37 		pwrbase0 = pwrlevel[0] + legacy_pwrdiff;
38 	}
39 
40 	pwrbase0 = (pwrbase0 << 24) | (pwrbase0 << 16) | (pwrbase0 << 8) |
41 		    pwrbase0;
42 	*ofdmbase = pwrbase0;
43 
44 	/* MCS rates */
45 	if (rtlefuse->eeprom_version >= 2) {
46 		/* Check HT20 to HT40 diff	*/
47 		if (rtlphy->current_chan_bw == HT_CHANNEL_WIDTH_20) {
48 			for (i = 0; i < 2; i++) {
49 				/* rf-A, rf-B */
50 				/* HT 20<->40 pwr diff */
51 				ht20_pwrdiff = rtlefuse->txpwr_ht20diff
52 							[i][chnl - 1];
53 
54 				if (ht20_pwrdiff < 8) /* 0~+7 */
55 					pwrlevel[i] += ht20_pwrdiff;
56 				else /* index8-15=-8~-1 */
57 					pwrlevel[i] -= (16 - ht20_pwrdiff);
58 			}
59 		}
60 	}
61 
62 	/* use index of rf-A */
63 	pwrbase1 = pwrlevel[0];
64 	pwrbase1 = (pwrbase1 << 24) | (pwrbase1 << 16) | (pwrbase1 << 8) |
65 				pwrbase1;
66 	*mcsbase = pwrbase1;
67 
68 	/* The following is for Antenna
69 	 * diff from Ant-B to Ant-A */
70 	p_final_pwridx[0] = pwrlevel[0];
71 	p_final_pwridx[1] = pwrlevel[1];
72 
73 	switch (rtlefuse->eeprom_regulatory) {
74 	case 3:
75 		/* The following is for calculation
76 		 * of the power diff for Ant-B to Ant-A. */
77 		if (rtlphy->current_chan_bw == HT_CHANNEL_WIDTH_20_40) {
78 			p_final_pwridx[0] += rtlefuse->pwrgroup_ht40
79 						[RF90_PATH_A][
80 						chnl - 1];
81 			p_final_pwridx[1] += rtlefuse->pwrgroup_ht40
82 						[RF90_PATH_B][
83 						chnl - 1];
84 		} else {
85 			p_final_pwridx[0] += rtlefuse->pwrgroup_ht20
86 						[RF90_PATH_A][
87 						chnl - 1];
88 			p_final_pwridx[1] += rtlefuse->pwrgroup_ht20
89 						[RF90_PATH_B][
90 						chnl - 1];
91 		}
92 		break;
93 	default:
94 		break;
95 	}
96 
97 	if (rtlphy->current_chan_bw == HT_CHANNEL_WIDTH_20_40) {
98 		rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD,
99 			"40MHz finalpwr_idx (A / B) = 0x%x / 0x%x\n",
100 			p_final_pwridx[0], p_final_pwridx[1]);
101 	} else {
102 		rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD,
103 			"20MHz finalpwr_idx (A / B) = 0x%x / 0x%x\n",
104 			p_final_pwridx[0], p_final_pwridx[1]);
105 	}
106 }
107 
_rtl92s_set_antennadiff(struct ieee80211_hw * hw,u8 * p_final_pwridx)108 static void _rtl92s_set_antennadiff(struct ieee80211_hw *hw,
109 				    u8 *p_final_pwridx)
110 {
111 	struct rtl_priv *rtlpriv = rtl_priv(hw);
112 	struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
113 	struct rtl_phy *rtlphy = &(rtlpriv->phy);
114 	s8 ant_pwr_diff = 0;
115 	u32	u4reg_val = 0;
116 
117 	if (rtlphy->rf_type == RF_2T2R) {
118 		ant_pwr_diff = p_final_pwridx[1] - p_final_pwridx[0];
119 
120 		/* range is from 7~-8,
121 		 * index = 0x0~0xf */
122 		if (ant_pwr_diff > 7)
123 			ant_pwr_diff = 7;
124 		if (ant_pwr_diff < -8)
125 			ant_pwr_diff = -8;
126 
127 		rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD,
128 			"Antenna Diff from RF-B to RF-A = %d (0x%x)\n",
129 			ant_pwr_diff, ant_pwr_diff & 0xf);
130 
131 		ant_pwr_diff &= 0xf;
132 	}
133 
134 	/* Antenna TX power difference */
135 	rtlefuse->antenna_txpwdiff[2] = 0;/* RF-D, don't care */
136 	rtlefuse->antenna_txpwdiff[1] = 0;/* RF-C, don't care */
137 	rtlefuse->antenna_txpwdiff[0] = (u8)(ant_pwr_diff);	/* RF-B */
138 
139 	u4reg_val = rtlefuse->antenna_txpwdiff[2] << 8 |
140 				rtlefuse->antenna_txpwdiff[1] << 4 |
141 				rtlefuse->antenna_txpwdiff[0];
142 
143 	rtl_set_bbreg(hw, RFPGA0_TXGAINSTAGE, (BXBTXAGC | BXCTXAGC | BXDTXAGC),
144 		      u4reg_val);
145 
146 	rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD, "Write BCD-Diff(0x%x) = 0x%x\n",
147 		RFPGA0_TXGAINSTAGE, u4reg_val);
148 }
149 
_rtl92s_get_txpower_writeval_byregulatory(struct ieee80211_hw * hw,u8 chnl,u8 index,u32 pwrbase0,u32 pwrbase1,u32 * p_outwrite_val)150 static void _rtl92s_get_txpower_writeval_byregulatory(struct ieee80211_hw *hw,
151 						      u8 chnl, u8 index,
152 						      u32 pwrbase0,
153 						      u32 pwrbase1,
154 						      u32 *p_outwrite_val)
155 {
156 	struct rtl_priv *rtlpriv = rtl_priv(hw);
157 	struct rtl_phy *rtlphy = &(rtlpriv->phy);
158 	struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
159 	u8 i, chnlgroup, pwrdiff_limit[4];
160 	u32 writeval, customer_limit;
161 
162 	/* Index 0 & 1= legacy OFDM, 2-5=HT_MCS rate */
163 	switch (rtlefuse->eeprom_regulatory) {
164 	case 0:
165 		/* Realtek better performance increase power diff
166 		 * defined by Realtek for large power */
167 		chnlgroup = 0;
168 
169 		writeval = rtlphy->mcs_offset[chnlgroup][index] +
170 				((index < 2) ? pwrbase0 : pwrbase1);
171 
172 		rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD,
173 			"RTK better performance, writeval = 0x%x\n", writeval);
174 		break;
175 	case 1:
176 		/* Realtek regulatory increase power diff defined
177 		 * by Realtek for regulatory */
178 		if (rtlphy->current_chan_bw == HT_CHANNEL_WIDTH_20_40) {
179 			writeval = ((index < 2) ? pwrbase0 : pwrbase1);
180 
181 			rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD,
182 				"Realtek regulatory, 40MHz, writeval = 0x%x\n",
183 				writeval);
184 		} else {
185 			chnlgroup = 0;
186 
187 			if (rtlphy->pwrgroup_cnt >= 3) {
188 				if (chnl <= 3)
189 					chnlgroup = 0;
190 				else if (chnl >= 4 && chnl <= 8)
191 					chnlgroup = 1;
192 				else if (chnl > 8)
193 					chnlgroup = 2;
194 				if (rtlphy->pwrgroup_cnt == 4)
195 					chnlgroup++;
196 			}
197 
198 			writeval = rtlphy->mcs_offset[chnlgroup][index]
199 					+ ((index < 2) ?
200 					pwrbase0 : pwrbase1);
201 
202 			rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD,
203 				"Realtek regulatory, 20MHz, writeval = 0x%x\n",
204 				writeval);
205 		}
206 		break;
207 	case 2:
208 		/* Better regulatory don't increase any power diff */
209 		writeval = ((index < 2) ? pwrbase0 : pwrbase1);
210 		rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD,
211 			"Better regulatory, writeval = 0x%x\n", writeval);
212 		break;
213 	case 3:
214 		/* Customer defined power diff. increase power diff
215 		  defined by customer. */
216 		chnlgroup = 0;
217 
218 		if (rtlphy->current_chan_bw == HT_CHANNEL_WIDTH_20_40) {
219 			rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD,
220 				"customer's limit, 40MHz = 0x%x\n",
221 				rtlefuse->pwrgroup_ht40
222 				[RF90_PATH_A][chnl - 1]);
223 		} else {
224 			rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD,
225 				"customer's limit, 20MHz = 0x%x\n",
226 				rtlefuse->pwrgroup_ht20
227 				[RF90_PATH_A][chnl - 1]);
228 		}
229 
230 		for (i = 0; i < 4; i++) {
231 			pwrdiff_limit[i] = (u8)((rtlphy->mcs_offset
232 				[chnlgroup][index] & (0x7f << (i * 8)))
233 				>> (i * 8));
234 
235 			if (rtlphy->current_chan_bw ==
236 			    HT_CHANNEL_WIDTH_20_40) {
237 				if (pwrdiff_limit[i] >
238 				    rtlefuse->pwrgroup_ht40
239 				    [RF90_PATH_A][chnl - 1]) {
240 					pwrdiff_limit[i] =
241 					  rtlefuse->pwrgroup_ht40
242 					  [RF90_PATH_A][chnl - 1];
243 				}
244 			} else {
245 				if (pwrdiff_limit[i] >
246 				    rtlefuse->pwrgroup_ht20
247 				    [RF90_PATH_A][chnl - 1]) {
248 					pwrdiff_limit[i] =
249 					    rtlefuse->pwrgroup_ht20
250 					    [RF90_PATH_A][chnl - 1];
251 				}
252 			}
253 		}
254 
255 		customer_limit = (pwrdiff_limit[3] << 24) |
256 				(pwrdiff_limit[2] << 16) |
257 				(pwrdiff_limit[1] << 8) |
258 				(pwrdiff_limit[0]);
259 		rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD,
260 			"Customer's limit = 0x%x\n", customer_limit);
261 
262 		writeval = customer_limit + ((index < 2) ?
263 					     pwrbase0 : pwrbase1);
264 		rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD,
265 			"Customer, writeval = 0x%x\n", writeval);
266 		break;
267 	default:
268 		chnlgroup = 0;
269 		writeval = rtlphy->mcs_offset[chnlgroup][index] +
270 				((index < 2) ? pwrbase0 : pwrbase1);
271 		rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD,
272 			"RTK better performance, writeval = 0x%x\n", writeval);
273 		break;
274 	}
275 
276 	if (rtlpriv->dm.dynamic_txhighpower_lvl == TX_HIGH_PWR_LEVEL_LEVEL1)
277 		writeval = 0x10101010;
278 	else if (rtlpriv->dm.dynamic_txhighpower_lvl ==
279 		 TX_HIGH_PWR_LEVEL_LEVEL2)
280 		writeval = 0x0;
281 
282 	*p_outwrite_val = writeval;
283 
284 }
285 
_rtl92s_write_ofdm_powerreg(struct ieee80211_hw * hw,u8 index,u32 val)286 static void _rtl92s_write_ofdm_powerreg(struct ieee80211_hw *hw,
287 					u8 index, u32 val)
288 {
289 	struct rtl_priv *rtlpriv = rtl_priv(hw);
290 	struct rtl_phy *rtlphy = &(rtlpriv->phy);
291 	struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
292 	u16 regoffset[6] = {0xe00, 0xe04, 0xe10, 0xe14, 0xe18, 0xe1c};
293 	u8 i, rfa_pwr[4];
294 	u8 rfa_lower_bound = 0, rfa_upper_bound = 0, rf_pwr_diff = 0;
295 	u32 writeval = val;
296 
297 	/* If path A and Path B coexist, we must limit Path A tx power.
298 	 * Protect Path B pwr over or under flow. We need to calculate
299 	 * upper and lower bound of path A tx power. */
300 	if (rtlphy->rf_type == RF_2T2R) {
301 		rf_pwr_diff = rtlefuse->antenna_txpwdiff[0];
302 
303 		/* Diff=-8~-1 */
304 		if (rf_pwr_diff >= 8) {
305 			/* Prevent underflow!! */
306 			rfa_lower_bound = 0x10 - rf_pwr_diff;
307 		/* if (rf_pwr_diff >= 0) Diff = 0-7 */
308 		} else {
309 			rfa_upper_bound = RF6052_MAX_TX_PWR - rf_pwr_diff;
310 		}
311 	}
312 
313 	for (i = 0; i < 4; i++) {
314 		rfa_pwr[i] = (u8)((writeval & (0x7f << (i * 8))) >> (i * 8));
315 		if (rfa_pwr[i]  > RF6052_MAX_TX_PWR)
316 			rfa_pwr[i]  = RF6052_MAX_TX_PWR;
317 
318 		/* If path A and Path B coexist, we must limit Path A tx power.
319 		 * Protect Path B pwr over or under flow. We need to calculate
320 		 * upper and lower bound of path A tx power. */
321 		if (rtlphy->rf_type == RF_2T2R) {
322 			/* Diff=-8~-1 */
323 			if (rf_pwr_diff >= 8) {
324 				/* Prevent underflow!! */
325 				if (rfa_pwr[i] < rfa_lower_bound)
326 					rfa_pwr[i] = rfa_lower_bound;
327 			/* Diff = 0-7 */
328 			} else if (rf_pwr_diff >= 1) {
329 				/* Prevent overflow */
330 				if (rfa_pwr[i] > rfa_upper_bound)
331 					rfa_pwr[i] = rfa_upper_bound;
332 			}
333 		}
334 
335 	}
336 
337 	writeval = (rfa_pwr[3] << 24) | (rfa_pwr[2] << 16) | (rfa_pwr[1] << 8) |
338 				rfa_pwr[0];
339 
340 	rtl_set_bbreg(hw, regoffset[index], 0x7f7f7f7f, writeval);
341 }
342 
rtl92s_phy_rf6052_set_ofdmtxpower(struct ieee80211_hw * hw,u8 * p_pwrlevel,u8 chnl)343 void rtl92s_phy_rf6052_set_ofdmtxpower(struct ieee80211_hw *hw,
344 				       u8 *p_pwrlevel, u8 chnl)
345 {
346 	u32 writeval, pwrbase0, pwrbase1;
347 	u8 index = 0;
348 	u8 finalpwr_idx[4];
349 
350 	_rtl92s_get_powerbase(hw, p_pwrlevel, chnl, &pwrbase0, &pwrbase1,
351 			&finalpwr_idx[0]);
352 	_rtl92s_set_antennadiff(hw, &finalpwr_idx[0]);
353 
354 	for (index = 0; index < 6; index++) {
355 		_rtl92s_get_txpower_writeval_byregulatory(hw, chnl, index,
356 				pwrbase0, pwrbase1, &writeval);
357 
358 		_rtl92s_write_ofdm_powerreg(hw, index, writeval);
359 	}
360 }
361 
rtl92s_phy_rf6052_set_ccktxpower(struct ieee80211_hw * hw,u8 pwrlevel)362 void rtl92s_phy_rf6052_set_ccktxpower(struct ieee80211_hw *hw, u8 pwrlevel)
363 {
364 	struct rtl_priv *rtlpriv = rtl_priv(hw);
365 	struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
366 	struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
367 	u32 txagc = 0;
368 	bool dont_inc_cck_or_turboscanoff = false;
369 
370 	if (((rtlefuse->eeprom_version >= 2) &&
371 	      (rtlefuse->txpwr_safetyflag == 1)) ||
372 	      ((rtlefuse->eeprom_version >= 2) &&
373 	      (rtlefuse->eeprom_regulatory != 0)))
374 		dont_inc_cck_or_turboscanoff = true;
375 
376 	if (mac->act_scanning) {
377 		txagc = 0x3f;
378 		if (dont_inc_cck_or_turboscanoff)
379 			txagc = pwrlevel;
380 	} else {
381 		txagc = pwrlevel;
382 
383 		if (rtlpriv->dm.dynamic_txhighpower_lvl ==
384 		    TX_HIGH_PWR_LEVEL_LEVEL1)
385 			txagc = 0x10;
386 		else if (rtlpriv->dm.dynamic_txhighpower_lvl ==
387 			TX_HIGH_PWR_LEVEL_LEVEL2)
388 			txagc = 0x0;
389 	}
390 
391 	if (txagc > RF6052_MAX_TX_PWR)
392 		txagc = RF6052_MAX_TX_PWR;
393 
394 	rtl_set_bbreg(hw, RTXAGC_CCK_MCS32, BTX_AGCRATECCK, txagc);
395 
396 }
397 
rtl92s_phy_rf6052_config(struct ieee80211_hw * hw)398 bool rtl92s_phy_rf6052_config(struct ieee80211_hw *hw)
399 {
400 	struct rtl_priv *rtlpriv = rtl_priv(hw);
401 	struct rtl_phy *rtlphy = &(rtlpriv->phy);
402 	u32 u4reg_val = 0;
403 	u8 rfpath;
404 	bool rtstatus = true;
405 	struct bb_reg_def *pphyreg;
406 
407 	/* Initialize RF */
408 	for (rfpath = 0; rfpath < rtlphy->num_total_rfpath; rfpath++) {
409 
410 		pphyreg = &rtlphy->phyreg_def[rfpath];
411 
412 		/* Store original RFENV control type */
413 		switch (rfpath) {
414 		case RF90_PATH_A:
415 		case RF90_PATH_C:
416 			u4reg_val = rtl92s_phy_query_bb_reg(hw,
417 							    pphyreg->rfintfs,
418 							    BRFSI_RFENV);
419 			break;
420 		case RF90_PATH_B:
421 		case RF90_PATH_D:
422 			u4reg_val = rtl92s_phy_query_bb_reg(hw,
423 							    pphyreg->rfintfs,
424 							    BRFSI_RFENV << 16);
425 			break;
426 		}
427 
428 		/* Set RF_ENV enable */
429 		rtl92s_phy_set_bb_reg(hw, pphyreg->rfintfe,
430 				      BRFSI_RFENV << 16, 0x1);
431 
432 		/* Set RF_ENV output high */
433 		rtl92s_phy_set_bb_reg(hw, pphyreg->rfintfo, BRFSI_RFENV, 0x1);
434 
435 		/* Set bit number of Address and Data for RF register */
436 		rtl92s_phy_set_bb_reg(hw, pphyreg->rfhssi_para2,
437 				B3WIRE_ADDRESSLENGTH, 0x0);
438 		rtl92s_phy_set_bb_reg(hw, pphyreg->rfhssi_para2,
439 				B3WIRE_DATALENGTH, 0x0);
440 
441 		/* Initialize RF fom connfiguration file */
442 		switch (rfpath) {
443 		case RF90_PATH_A:
444 			rtstatus = rtl92s_phy_config_rf(hw,
445 						(enum radio_path)rfpath);
446 			break;
447 		case RF90_PATH_B:
448 			rtstatus = rtl92s_phy_config_rf(hw,
449 						(enum radio_path)rfpath);
450 			break;
451 		case RF90_PATH_C:
452 			break;
453 		case RF90_PATH_D:
454 			break;
455 		}
456 
457 		/* Restore RFENV control type */
458 		switch (rfpath) {
459 		case RF90_PATH_A:
460 		case RF90_PATH_C:
461 			rtl92s_phy_set_bb_reg(hw, pphyreg->rfintfs, BRFSI_RFENV,
462 					      u4reg_val);
463 			break;
464 		case RF90_PATH_B:
465 		case RF90_PATH_D:
466 			rtl92s_phy_set_bb_reg(hw, pphyreg->rfintfs,
467 					      BRFSI_RFENV << 16,
468 					      u4reg_val);
469 			break;
470 		}
471 
472 		if (!rtstatus) {
473 			pr_err("Radio[%d] Fail!!\n", rfpath);
474 			goto fail;
475 		}
476 
477 	}
478 
479 	return rtstatus;
480 
481 fail:
482 	return rtstatus;
483 }
484 
rtl92s_phy_rf6052_set_bandwidth(struct ieee80211_hw * hw,u8 bandwidth)485 void rtl92s_phy_rf6052_set_bandwidth(struct ieee80211_hw *hw, u8 bandwidth)
486 {
487 	struct rtl_priv *rtlpriv = rtl_priv(hw);
488 	struct rtl_phy *rtlphy = &(rtlpriv->phy);
489 
490 	switch (bandwidth) {
491 	case HT_CHANNEL_WIDTH_20:
492 		rtlphy->rfreg_chnlval[0] = ((rtlphy->rfreg_chnlval[0] &
493 					   0xfffff3ff) | 0x0400);
494 		rtl_set_rfreg(hw, RF90_PATH_A, RF_CHNLBW, RFREG_OFFSET_MASK,
495 					rtlphy->rfreg_chnlval[0]);
496 		break;
497 	case HT_CHANNEL_WIDTH_20_40:
498 		rtlphy->rfreg_chnlval[0] = ((rtlphy->rfreg_chnlval[0] &
499 					    0xfffff3ff));
500 		rtl_set_rfreg(hw, RF90_PATH_A, RF_CHNLBW, RFREG_OFFSET_MASK,
501 					rtlphy->rfreg_chnlval[0]);
502 		break;
503 	default:
504 		pr_err("unknown bandwidth: %#X\n", bandwidth);
505 		break;
506 	}
507 }
508