summaryrefslogtreecommitdiff
path: root/drivers/staging/vt6656/rf.c
blob: 464602c747270d6a308dc915f9cbf970067e7303 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
 * All rights reserved.
 *
 * Purpose: rf function code
 *
 * Author: Jerry Chen
 *
 * Date: Feb. 19, 2004
 *
 * Functions:
 *	vnt_rf_write_embedded	- Embedded write RF register via MAC
 *
 * Revision History:
 *	RF_VT3226: RobertYu:20051111, VT3226C0 and before
 *	RF_VT3226D0: RobertYu:20051228
 *	RF_VT3342A0: RobertYu:20060609
 *
 */

#include <linux/errno.h>
#include "mac.h"
#include "rf.h"
#include "baseband.h"
#include "usbpipe.h"

#define CB_AL2230_INIT_SEQ    15
#define CB_AL7230_INIT_SEQ    16
#define CB_VT3226_INIT_SEQ    11
#define CB_VT3342_INIT_SEQ    13

static u8 al2230_init_table[CB_AL2230_INIT_SEQ][3] = {
	{0x03, 0xf7, 0x90},
	{0x03, 0x33, 0x31},
	{0x01, 0xb8, 0x02},
	{0x00, 0xff, 0xf3},
	{0x00, 0x05, 0xa4},
	{0x0f, 0x4d, 0xc5},
	{0x08, 0x05, 0xb6},
	{0x01, 0x47, 0xc7},
	{0x00, 0x06, 0x88},
	{0x04, 0x03, 0xb9},
	{0x00, 0xdb, 0xba},
	{0x00, 0x09, 0x9b},
	{0x0b, 0xdf, 0xfc},
	{0x00, 0x00, 0x0d},
	{0x00, 0x58, 0x0f}
};

static u8 al2230_channel_table0[CB_MAX_CHANNEL_24G][3] = {
	{0x03, 0xf7, 0x90},
	{0x03, 0xf7, 0x90},
	{0x03, 0xe7, 0x90},
	{0x03, 0xe7, 0x90},
	{0x03, 0xf7, 0xa0},
	{0x03, 0xf7, 0xa0},
	{0x03, 0xe7, 0xa0},
	{0x03, 0xe7, 0xa0},
	{0x03, 0xf7, 0xb0},
	{0x03, 0xf7, 0xb0},
	{0x03, 0xe7, 0xb0},
	{0x03, 0xe7, 0xb0},
	{0x03, 0xf7, 0xc0},
	{0x03, 0xe7, 0xc0}
};

static u8 al2230_channel_table1[CB_MAX_CHANNEL_24G][3] = {
	{0x03, 0x33, 0x31},
	{0x0b, 0x33, 0x31},
	{0x03, 0x33, 0x31},
	{0x0b, 0x33, 0x31},
	{0x03, 0x33, 0x31},
	{0x0b, 0x33, 0x31},
	{0x03, 0x33, 0x31},
	{0x0b, 0x33, 0x31},
	{0x03, 0x33, 0x31},
	{0x0b, 0x33, 0x31},
	{0x03, 0x33, 0x31},
	{0x0b, 0x33, 0x31},
	{0x03, 0x33, 0x31},
	{0x06, 0x66, 0x61}
};

static u8 vt3226_init_table[CB_VT3226_INIT_SEQ][3] = {
	{0x03, 0xff, 0x80},
	{0x02, 0x82, 0xa1},
	{0x03, 0xc6, 0xa2},
	{0x01, 0x97, 0x93},
	{0x03, 0x66, 0x64},
	{0x00, 0x61, 0xa5},
	{0x01, 0x7b, 0xd6},
	{0x00, 0x80, 0x17},
	{0x03, 0xf8, 0x08},
	{0x00, 0x02, 0x39},
	{0x02, 0x00, 0x2a}
};

static u8 vt3226d0_init_table[CB_VT3226_INIT_SEQ][3] = {
	{0x03, 0xff, 0x80},
	{0x03, 0x02, 0x21},
	{0x03, 0xc6, 0xa2},
	{0x01, 0x97, 0x93},
	{0x03, 0x66, 0x64},
	{0x00, 0x71, 0xa5},
	{0x01, 0x15, 0xc6},
	{0x01, 0x2e, 0x07},
	{0x00, 0x58, 0x08},
	{0x00, 0x02, 0x79},
	{0x02, 0x01, 0xaa}
};

static u8 vt3226_channel_table0[CB_MAX_CHANNEL_24G][3] = {
	{0x01, 0x97, 0x83},
	{0x01, 0x97, 0x83},
	{0x01, 0x97, 0x93},
	{0x01, 0x97, 0x93},
	{0x01, 0x97, 0x93},
	{0x01, 0x97, 0x93},
	{0x01, 0x97, 0xa3},
	{0x01, 0x97, 0xa3},
	{0x01, 0x97, 0xa3},
	{0x01, 0x97, 0xa3},
	{0x01, 0x97, 0xb3},
	{0x01, 0x97, 0xb3},
	{0x01, 0x97, 0xb3},
	{0x03, 0x37, 0xc3}
};

static u8 vt3226_channel_table1[CB_MAX_CHANNEL_24G][3] = {
	{0x02, 0x66, 0x64},
	{0x03, 0x66, 0x64},
	{0x00, 0x66, 0x64},
	{0x01, 0x66, 0x64},
	{0x02, 0x66, 0x64},
	{0x03, 0x66, 0x64},
	{0x00, 0x66, 0x64},
	{0x01, 0x66, 0x64},
	{0x02, 0x66, 0x64},
	{0x03, 0x66, 0x64},
	{0x00, 0x66, 0x64},
	{0x01, 0x66, 0x64},
	{0x02, 0x66, 0x64},
	{0x00, 0xcc, 0xc4}
};

static const u32 vt3226d0_lo_current_table[CB_MAX_CHANNEL_24G] = {
	0x0135c600,
	0x0135c600,
	0x0235c600,
	0x0235c600,
	0x0235c600,
	0x0335c600,
	0x0335c600,
	0x0335c600,
	0x0335c600,
	0x0335c600,
	0x0335c600,
	0x0335c600,
	0x0335c600,
	0x0135c600
};

enum {
	VNT_TABLE_INIT = 0,
	VNT_TABLE_INIT_2 = 0,
	VNT_TABLE_0 = 1,
	VNT_TABLE_1 = 2,
	VNT_TABLE_2 = 1
};

struct vnt_table_info {
	u8 *addr;
	int length;
};

static const struct vnt_table_info vnt_table_seq[][3] = {
	{	/* RF_AL2230, RF_AL2230S init table, channel table 0 and 1 */
		{&al2230_init_table[0][0], CB_AL2230_INIT_SEQ * 3},
		{&al2230_channel_table0[0][0], CB_MAX_CHANNEL_24G * 3},
		{&al2230_channel_table1[0][0], CB_MAX_CHANNEL_24G * 3}
	}, {	/* RF_VT3226 init table, channel table 0 and 1 */
		{&vt3226_init_table[0][0], CB_VT3226_INIT_SEQ * 3},
		{&vt3226_channel_table0[0][0], CB_MAX_CHANNEL_24G * 3},
		{&vt3226_channel_table1[0][0], CB_MAX_CHANNEL_24G * 3}
	}, {	/* RF_VT3226D0 init table, channel table 0 and 1 */
		{&vt3226d0_init_table[0][0], CB_VT3226_INIT_SEQ * 3},
		{&vt3226_channel_table0[0][0], CB_MAX_CHANNEL_24G * 3},
		{&vt3226_channel_table1[0][0], CB_MAX_CHANNEL_24G * 3}
	}
};

/*
 * Description: Write to IF/RF, by embedded programming
 */
int vnt_rf_write_embedded(struct vnt_private *priv, u32 data)
{
	u8 reg_data[4];

	data |= (VNT_RF_REG_LEN << 3) | IFREGCTL_REGW;

	reg_data[0] = (u8)data;
	reg_data[1] = (u8)(data >> 8);
	reg_data[2] = (u8)(data >> 16);
	reg_data[3] = (u8)(data >> 24);

	return vnt_control_out(priv, MESSAGE_TYPE_WRITE_IFRF, 0, 0,
			       ARRAY_SIZE(reg_data), reg_data);
}

static u8 vnt_rf_addpower(struct vnt_private *priv)
{
	int base;
	s32 rssi = -priv->current_rssi;

	if (!rssi)
		return 7;

	if (priv->rf_type == RF_VT3226D0)
		base = -60;
	else
		base = -70;

	if (rssi < base)
		return ((rssi - base + 1) / -5) * 2 + 5;

	return 0;
}

/* Set Tx power by power level and rate */
static int vnt_rf_set_txpower(struct vnt_private *priv, u8 power,
			      struct ieee80211_channel *ch)
{
	u32 power_setting = 0;
	int ret = 0;

	power += vnt_rf_addpower(priv);
	if (power > VNT_RF_MAX_POWER)
		power = VNT_RF_MAX_POWER;

	if (priv->power == power)
		return 0;

	priv->power = power;

	switch (priv->rf_type) {
	case RF_AL2230:
		power_setting = 0x0404090 | (power << 12);

		ret = vnt_rf_write_embedded(priv, power_setting);
		if (ret)
			return ret;

		if (ch->flags & IEEE80211_CHAN_NO_OFDM)
			ret = vnt_rf_write_embedded(priv, 0x0001b400);
		else
			ret = vnt_rf_write_embedded(priv, 0x0005a400);

		break;
	case RF_AL2230S:
		power_setting = 0x0404090 | (power << 12);

		ret = vnt_rf_write_embedded(priv, power_setting);
		if (ret)
			return ret;

		if (ch->flags & IEEE80211_CHAN_NO_OFDM) {
			ret = vnt_rf_write_embedded(priv, 0x040c1400);
			if (ret)
				return ret;

			ret = vnt_rf_write_embedded(priv, 0x00299b00);
		} else {
			ret = vnt_rf_write_embedded(priv, 0x0005a400);
			if (ret)
				return ret;

			ret = vnt_rf_write_embedded(priv, 0x00099b00);
		}

		break;

	case RF_VT3226:
		power_setting = ((0x3f - power) << 20) | (0x17 << 8);

		ret = vnt_rf_write_embedded(priv, power_setting);
		break;
	case RF_VT3226D0:
		if (ch->flags & IEEE80211_CHAN_NO_OFDM) {
			u16 hw_value = ch->hw_value;

			power_setting = ((0x3f - power) << 20) | (0xe07 << 8);

			ret = vnt_rf_write_embedded(priv, power_setting);
			if (ret)
				return ret;

			ret = vnt_rf_write_embedded(priv, 0x03c6a200);
			if (ret)
				return ret;

			dev_dbg(&priv->usb->dev,
				"%s 11b channel [%d]\n", __func__, hw_value);

			hw_value--;

			if (hw_value < ARRAY_SIZE(vt3226d0_lo_current_table)) {
				ret = vnt_rf_write_embedded(priv,
							    vt3226d0_lo_current_table[hw_value]);
				if (ret)
					return ret;
			}

			ret = vnt_rf_write_embedded(priv, 0x015C0800);
		} else {
			dev_dbg(&priv->usb->dev,
				"@@@@ %s> 11G mode\n", __func__);

			power_setting = ((0x3f - power) << 20) | (0x7 << 8);

			ret = vnt_rf_write_embedded(priv, power_setting);
			if (ret)
				return ret;

			ret = vnt_rf_write_embedded(priv, 0x00C6A200);
			if (ret)
				return ret;

			ret = vnt_rf_write_embedded(priv, 0x016BC600);
			if (ret)
				return ret;

			ret = vnt_rf_write_embedded(priv, 0x00900800);
		}

		break;

	default:
		break;
	}
	return ret;
}

/* Set Tx power by channel number type */
int vnt_rf_setpower(struct vnt_private *priv,
		    struct ieee80211_channel *ch)
{
	u16 channel;
	u8 power = priv->cck_pwr;

	if (!ch)
		return -EINVAL;

	/* set channel number to array number */
	channel = ch->hw_value - 1;

	if (ch->flags & IEEE80211_CHAN_NO_OFDM) {
		if (channel < ARRAY_SIZE(priv->cck_pwr_tbl))
			power = priv->cck_pwr_tbl[channel];
	} else if (ch->band == NL80211_BAND_5GHZ) {
		/* remove 14 channels to array size */
		channel -= 14;

		if (channel < ARRAY_SIZE(priv->ofdm_a_pwr_tbl))
			power = priv->ofdm_a_pwr_tbl[channel];
	} else {
		if (channel < ARRAY_SIZE(priv->ofdm_pwr_tbl))
			power = priv->ofdm_pwr_tbl[channel];
	}

	return vnt_rf_set_txpower(priv, power, ch);
}

/* Convert rssi to dbm */
void vnt_rf_rssi_to_dbm(struct vnt_private *priv, u8 rssi, long *dbm)
{
	u8 idx = ((rssi & 0xc0) >> 6) & 0x03;
	long b = rssi & 0x3f;
	long a = 0;
	u8 airoharf[4] = {0, 18, 0, 40};

	switch (priv->rf_type) {
	case RF_AL2230:
	case RF_AL2230S:
	case RF_VT3226:
	case RF_VT3226D0:
		a = airoharf[idx];
		break;
	default:
		break;
	}

	*dbm = -1 * (a + b * 2);
}

int vnt_rf_table_download(struct vnt_private *priv)
{
	int ret;
	int idx = -1;
	const struct vnt_table_info *table_seq;

	switch (priv->rf_type) {
	case RF_AL2230:
	case RF_AL2230S:
		idx = 0;
		break;
	case RF_VT3226:
		idx = 1;
		break;
	case RF_VT3226D0:
		idx = 2;
		break;
	}

	if (idx < 0)
		return 0;

	table_seq = &vnt_table_seq[idx][0];

	/* Init Table */
	ret = vnt_control_out(priv, MESSAGE_TYPE_WRITE, 0,
			      MESSAGE_REQUEST_RF_INIT,
			      table_seq[VNT_TABLE_INIT].length,
			      table_seq[VNT_TABLE_INIT].addr);
	if (ret)
		return ret;

	/* Channel Table 0 */
	ret = vnt_control_out_blocks(priv, VNT_REG_BLOCK_SIZE,
				     MESSAGE_REQUEST_RF_CH0,
				     table_seq[VNT_TABLE_0].length,
				     table_seq[VNT_TABLE_0].addr);
	if (ret)
		return ret;

	/* Channel Table 1 */
	ret = vnt_control_out_blocks(priv, VNT_REG_BLOCK_SIZE,
				     MESSAGE_REQUEST_RF_CH1,
				     table_seq[VNT_TABLE_1].length,
				     table_seq[VNT_TABLE_1].addr);

	return ret;
}