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/drivers/net/wireless/zd1211rw/zd_rf.c

https://bitbucket.org/cyanogenmod/android_kernel_asus_tf300t
C | 182 lines | 136 code | 24 blank | 22 comment | 14 complexity | 0f5c744334e9731cab596afa7765a068 MD5 | raw file
Possible License(s): LGPL-2.0, AGPL-1.0, GPL-2.0
  1/* ZD1211 USB-WLAN driver for Linux
  2 *
  3 * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
  4 * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
  5 *
  6 * This program is free software; you can redistribute it and/or modify
  7 * it under the terms of the GNU General Public License as published by
  8 * the Free Software Foundation; either version 2 of the License, or
  9 * (at your option) any later version.
 10 *
 11 * This program is distributed in the hope that it will be useful,
 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 14 * GNU General Public License for more details.
 15 *
 16 * You should have received a copy of the GNU General Public License
 17 * along with this program; if not, write to the Free Software
 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 19 */
 20
 21#include <linux/errno.h>
 22#include <linux/string.h>
 23
 24#include "zd_def.h"
 25#include "zd_rf.h"
 26#include "zd_mac.h"
 27#include "zd_chip.h"
 28
 29static const char * const rfs[] = {
 30	[0]		= "unknown RF0",
 31	[1]		= "unknown RF1",
 32	[UW2451_RF]	= "UW2451_RF",
 33	[UCHIP_RF]	= "UCHIP_RF",
 34	[AL2230_RF]	= "AL2230_RF",
 35	[AL7230B_RF]	= "AL7230B_RF",
 36	[THETA_RF]	= "THETA_RF",
 37	[AL2210_RF]	= "AL2210_RF",
 38	[MAXIM_NEW_RF]	= "MAXIM_NEW_RF",
 39	[UW2453_RF]	= "UW2453_RF",
 40	[AL2230S_RF]	= "AL2230S_RF",
 41	[RALINK_RF]	= "RALINK_RF",
 42	[INTERSIL_RF]	= "INTERSIL_RF",
 43	[RF2959_RF]	= "RF2959_RF",
 44	[MAXIM_NEW2_RF]	= "MAXIM_NEW2_RF",
 45	[PHILIPS_RF]	= "PHILIPS_RF",
 46};
 47
 48const char *zd_rf_name(u8 type)
 49{
 50	if (type & 0xf0)
 51		type = 0;
 52	return rfs[type];
 53}
 54
 55void zd_rf_init(struct zd_rf *rf)
 56{
 57	memset(rf, 0, sizeof(*rf));
 58
 59	/* default to update channel integration, as almost all RF's do want
 60	 * this */
 61	rf->update_channel_int = 1;
 62}
 63
 64void zd_rf_clear(struct zd_rf *rf)
 65{
 66	if (rf->clear)
 67		rf->clear(rf);
 68	ZD_MEMCLEAR(rf, sizeof(*rf));
 69}
 70
 71int zd_rf_init_hw(struct zd_rf *rf, u8 type)
 72{
 73	int r = 0;
 74	int t;
 75	struct zd_chip *chip = zd_rf_to_chip(rf);
 76
 77	ZD_ASSERT(mutex_is_locked(&chip->mutex));
 78	switch (type) {
 79	case RF2959_RF:
 80		r = zd_rf_init_rf2959(rf);
 81		break;
 82	case AL2230_RF:
 83	case AL2230S_RF:
 84		r = zd_rf_init_al2230(rf);
 85		break;
 86	case AL7230B_RF:
 87		r = zd_rf_init_al7230b(rf);
 88		break;
 89	case MAXIM_NEW_RF:
 90	case UW2453_RF:
 91		r = zd_rf_init_uw2453(rf);
 92		break;
 93	default:
 94		dev_err(zd_chip_dev(chip),
 95			"RF %s %#x is not supported\n", zd_rf_name(type), type);
 96		rf->type = 0;
 97		return -ENODEV;
 98	}
 99
100	if (r)
101		return r;
102
103	rf->type = type;
104
105	r = zd_chip_lock_phy_regs(chip);
106	if (r)
107		return r;
108	t = rf->init_hw(rf);
109	r = zd_chip_unlock_phy_regs(chip);
110	if (t)
111		r = t;
112	return r;
113}
114
115int zd_rf_scnprint_id(struct zd_rf *rf, char *buffer, size_t size)
116{
117	return scnprintf(buffer, size, "%s", zd_rf_name(rf->type));
118}
119
120int zd_rf_set_channel(struct zd_rf *rf, u8 channel)
121{
122	int r;
123
124	ZD_ASSERT(mutex_is_locked(&zd_rf_to_chip(rf)->mutex));
125	if (channel < MIN_CHANNEL24)
126		return -EINVAL;
127	if (channel > MAX_CHANNEL24)
128		return -EINVAL;
129	dev_dbg_f(zd_chip_dev(zd_rf_to_chip(rf)), "channel: %d\n", channel);
130
131	r = rf->set_channel(rf, channel);
132	if (r >= 0)
133		rf->channel = channel;
134	return r;
135}
136
137int zd_switch_radio_on(struct zd_rf *rf)
138{
139	int r, t;
140	struct zd_chip *chip = zd_rf_to_chip(rf);
141
142	ZD_ASSERT(mutex_is_locked(&chip->mutex));
143	r = zd_chip_lock_phy_regs(chip);
144	if (r)
145		return r;
146	t = rf->switch_radio_on(rf);
147	r = zd_chip_unlock_phy_regs(chip);
148	if (t)
149		r = t;
150	return r;
151}
152
153int zd_switch_radio_off(struct zd_rf *rf)
154{
155	int r, t;
156	struct zd_chip *chip = zd_rf_to_chip(rf);
157
158	/* TODO: move phy regs handling to zd_chip */
159	ZD_ASSERT(mutex_is_locked(&chip->mutex));
160	r = zd_chip_lock_phy_regs(chip);
161	if (r)
162		return r;
163	t = rf->switch_radio_off(rf);
164	r = zd_chip_unlock_phy_regs(chip);
165	if (t)
166		r = t;
167	return r;
168}
169
170int zd_rf_patch_6m_band_edge(struct zd_rf *rf, u8 channel)
171{
172	if (!rf->patch_6m_band_edge)
173		return 0;
174
175	return rf->patch_6m_band_edge(rf, channel);
176}
177
178int zd_rf_generic_patch_6m(struct zd_rf *rf, u8 channel)
179{
180	return zd_chip_generic_patch_6m_band(zd_rf_to_chip(rf), channel);
181}
182