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1// SPDX-License-Identifier: GPL-2.0-only
2/******************************************************************************
3 *
4 * Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved.
5 * Copyright (C) 2019 Intel Corporation
6 *****************************************************************************/
7
8
9#include <linux/kernel.h>
10#include <linux/module.h>
11#include <linux/delay.h>
12#include <linux/skbuff.h>
13#include <linux/netdevice.h>
14#include <net/mac80211.h>
15#include <linux/etherdevice.h>
16#include <asm/unaligned.h>
17#include "iwl-io.h"
18#include "iwl-trans.h"
19#include "iwl-modparams.h"
20#include "dev.h"
21#include "agn.h"
22
23/* Throughput OFF time(ms) ON time (ms)
24 * >300 25 25
25 * >200 to 300 40 40
26 * >100 to 200 55 55
27 * >70 to 100 65 65
28 * >50 to 70 75 75
29 * >20 to 50 85 85
30 * >10 to 20 95 95
31 * >5 to 10 110 110
32 * >1 to 5 130 130
33 * >0 to 1 167 167
34 * <=0 SOLID ON
35 */
36static const struct ieee80211_tpt_blink iwl_blink[] = {
37 { .throughput = 0, .blink_time = 334 },
38 { .throughput = 1 * 1024 - 1, .blink_time = 260 },
39 { .throughput = 5 * 1024 - 1, .blink_time = 220 },
40 { .throughput = 10 * 1024 - 1, .blink_time = 190 },
41 { .throughput = 20 * 1024 - 1, .blink_time = 170 },
42 { .throughput = 50 * 1024 - 1, .blink_time = 150 },
43 { .throughput = 70 * 1024 - 1, .blink_time = 130 },
44 { .throughput = 100 * 1024 - 1, .blink_time = 110 },
45 { .throughput = 200 * 1024 - 1, .blink_time = 80 },
46 { .throughput = 300 * 1024 - 1, .blink_time = 50 },
47};
48
49/* Set led register off */
50void iwlagn_led_enable(struct iwl_priv *priv)
51{
52 iwl_write32(priv->trans, CSR_LED_REG, CSR_LED_REG_TURN_ON);
53}
54
55/*
56 * Adjust led blink rate to compensate on a MAC Clock difference on every HW
57 * Led blink rate analysis showed an average deviation of 20% on 5000 series
58 * and up.
59 * Need to compensate on the led on/off time per HW according to the deviation
60 * to achieve the desired led frequency
61 * The calculation is: (100-averageDeviation)/100 * blinkTime
62 * For code efficiency the calculation will be:
63 * compensation = (100 - averageDeviation) * 64 / 100
64 * NewBlinkTime = (compensation * BlinkTime) / 64
65 */
66static inline u8 iwl_blink_compensation(struct iwl_priv *priv,
67 u8 time, u16 compensation)
68{
69 if (!compensation) {
70 IWL_ERR(priv, "undefined blink compensation: "
71 "use pre-defined blinking time\n");
72 return time;
73 }
74
75 return (u8)((time * compensation) >> 6);
76}
77
78static int iwl_send_led_cmd(struct iwl_priv *priv, struct iwl_led_cmd *led_cmd)
79{
80 struct iwl_host_cmd cmd = {
81 .id = REPLY_LEDS_CMD,
82 .len = { sizeof(struct iwl_led_cmd), },
83 .data = { led_cmd, },
84 .flags = CMD_ASYNC,
85 };
86 u32 reg;
87
88 reg = iwl_read32(priv->trans, CSR_LED_REG);
89 if (reg != (reg & CSR_LED_BSM_CTRL_MSK))
90 iwl_write32(priv->trans, CSR_LED_REG,
91 reg & CSR_LED_BSM_CTRL_MSK);
92
93 return iwl_dvm_send_cmd(priv, &cmd);
94}
95
96/* Set led pattern command */
97static int iwl_led_cmd(struct iwl_priv *priv,
98 unsigned long on,
99 unsigned long off)
100{
101 struct iwl_led_cmd led_cmd = {
102 .id = IWL_LED_LINK,
103 .interval = IWL_DEF_LED_INTRVL
104 };
105 int ret;
106
107 if (!test_bit(STATUS_READY, &priv->status))
108 return -EBUSY;
109
110 if (priv->blink_on == on && priv->blink_off == off)
111 return 0;
112
113 if (off == 0) {
114 /* led is SOLID_ON */
115 on = IWL_LED_SOLID;
116 }
117
118 led_cmd.on = iwl_blink_compensation(priv, on,
119 priv->trans->trans_cfg->base_params->led_compensation);
120 led_cmd.off = iwl_blink_compensation(priv, off,
121 priv->trans->trans_cfg->base_params->led_compensation);
122
123 ret = iwl_send_led_cmd(priv, &led_cmd);
124 if (!ret) {
125 priv->blink_on = on;
126 priv->blink_off = off;
127 }
128 return ret;
129}
130
131static void iwl_led_brightness_set(struct led_classdev *led_cdev,
132 enum led_brightness brightness)
133{
134 struct iwl_priv *priv = container_of(led_cdev, struct iwl_priv, led);
135 unsigned long on = 0;
136 unsigned long off = 0;
137
138 if (brightness > 0)
139 on = IWL_LED_SOLID;
140 else
141 off = IWL_LED_SOLID;
142
143 iwl_led_cmd(priv, on, off);
144}
145
146static int iwl_led_blink_set(struct led_classdev *led_cdev,
147 unsigned long *delay_on,
148 unsigned long *delay_off)
149{
150 struct iwl_priv *priv = container_of(led_cdev, struct iwl_priv, led);
151
152 return iwl_led_cmd(priv, *delay_on, *delay_off);
153}
154
155void iwl_leds_init(struct iwl_priv *priv)
156{
157 int mode = iwlwifi_mod_params.led_mode;
158 int ret;
159
160 if (mode == IWL_LED_DISABLE) {
161 IWL_INFO(priv, "Led disabled\n");
162 return;
163 }
164 if (mode == IWL_LED_DEFAULT)
165 mode = priv->cfg->led_mode;
166
167 priv->led.name = kasprintf(GFP_KERNEL, "%s-led",
168 wiphy_name(priv->hw->wiphy));
169 if (!priv->led.name)
170 return;
171
172 priv->led.brightness_set = iwl_led_brightness_set;
173 priv->led.blink_set = iwl_led_blink_set;
174 priv->led.max_brightness = 1;
175
176 switch (mode) {
177 case IWL_LED_DEFAULT:
178 WARN_ON(1);
179 break;
180 case IWL_LED_BLINK:
181 priv->led.default_trigger =
182 ieee80211_create_tpt_led_trigger(priv->hw,
183 IEEE80211_TPT_LEDTRIG_FL_CONNECTED,
184 iwl_blink, ARRAY_SIZE(iwl_blink));
185 break;
186 case IWL_LED_RF_STATE:
187 priv->led.default_trigger =
188 ieee80211_get_radio_led_name(priv->hw);
189 break;
190 }
191
192 ret = led_classdev_register(priv->trans->dev, &priv->led);
193 if (ret) {
194 kfree(priv->led.name);
195 return;
196 }
197
198 priv->led_registered = true;
199}
200
201void iwl_leds_exit(struct iwl_priv *priv)
202{
203 if (!priv->led_registered)
204 return;
205
206 led_classdev_unregister(&priv->led);
207 kfree(priv->led.name);
208}
1/******************************************************************************
2 *
3 * Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
17 *
18 * The full GNU General Public License is included in this distribution in the
19 * file called LICENSE.
20 *
21 * Contact Information:
22 * Intel Linux Wireless <linuxwifi@intel.com>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
24 *
25 *****************************************************************************/
26
27
28#include <linux/kernel.h>
29#include <linux/module.h>
30#include <linux/delay.h>
31#include <linux/skbuff.h>
32#include <linux/netdevice.h>
33#include <net/mac80211.h>
34#include <linux/etherdevice.h>
35#include <asm/unaligned.h>
36#include "iwl-io.h"
37#include "iwl-trans.h"
38#include "iwl-modparams.h"
39#include "dev.h"
40#include "agn.h"
41
42/* Throughput OFF time(ms) ON time (ms)
43 * >300 25 25
44 * >200 to 300 40 40
45 * >100 to 200 55 55
46 * >70 to 100 65 65
47 * >50 to 70 75 75
48 * >20 to 50 85 85
49 * >10 to 20 95 95
50 * >5 to 10 110 110
51 * >1 to 5 130 130
52 * >0 to 1 167 167
53 * <=0 SOLID ON
54 */
55static const struct ieee80211_tpt_blink iwl_blink[] = {
56 { .throughput = 0, .blink_time = 334 },
57 { .throughput = 1 * 1024 - 1, .blink_time = 260 },
58 { .throughput = 5 * 1024 - 1, .blink_time = 220 },
59 { .throughput = 10 * 1024 - 1, .blink_time = 190 },
60 { .throughput = 20 * 1024 - 1, .blink_time = 170 },
61 { .throughput = 50 * 1024 - 1, .blink_time = 150 },
62 { .throughput = 70 * 1024 - 1, .blink_time = 130 },
63 { .throughput = 100 * 1024 - 1, .blink_time = 110 },
64 { .throughput = 200 * 1024 - 1, .blink_time = 80 },
65 { .throughput = 300 * 1024 - 1, .blink_time = 50 },
66};
67
68/* Set led register off */
69void iwlagn_led_enable(struct iwl_priv *priv)
70{
71 iwl_write32(priv->trans, CSR_LED_REG, CSR_LED_REG_TURN_ON);
72}
73
74/*
75 * Adjust led blink rate to compensate on a MAC Clock difference on every HW
76 * Led blink rate analysis showed an average deviation of 20% on 5000 series
77 * and up.
78 * Need to compensate on the led on/off time per HW according to the deviation
79 * to achieve the desired led frequency
80 * The calculation is: (100-averageDeviation)/100 * blinkTime
81 * For code efficiency the calculation will be:
82 * compensation = (100 - averageDeviation) * 64 / 100
83 * NewBlinkTime = (compensation * BlinkTime) / 64
84 */
85static inline u8 iwl_blink_compensation(struct iwl_priv *priv,
86 u8 time, u16 compensation)
87{
88 if (!compensation) {
89 IWL_ERR(priv, "undefined blink compensation: "
90 "use pre-defined blinking time\n");
91 return time;
92 }
93
94 return (u8)((time * compensation) >> 6);
95}
96
97static int iwl_send_led_cmd(struct iwl_priv *priv, struct iwl_led_cmd *led_cmd)
98{
99 struct iwl_host_cmd cmd = {
100 .id = REPLY_LEDS_CMD,
101 .len = { sizeof(struct iwl_led_cmd), },
102 .data = { led_cmd, },
103 .flags = CMD_ASYNC,
104 };
105 u32 reg;
106
107 reg = iwl_read32(priv->trans, CSR_LED_REG);
108 if (reg != (reg & CSR_LED_BSM_CTRL_MSK))
109 iwl_write32(priv->trans, CSR_LED_REG,
110 reg & CSR_LED_BSM_CTRL_MSK);
111
112 return iwl_dvm_send_cmd(priv, &cmd);
113}
114
115/* Set led pattern command */
116static int iwl_led_cmd(struct iwl_priv *priv,
117 unsigned long on,
118 unsigned long off)
119{
120 struct iwl_led_cmd led_cmd = {
121 .id = IWL_LED_LINK,
122 .interval = IWL_DEF_LED_INTRVL
123 };
124 int ret;
125
126 if (!test_bit(STATUS_READY, &priv->status))
127 return -EBUSY;
128
129 if (priv->blink_on == on && priv->blink_off == off)
130 return 0;
131
132 if (off == 0) {
133 /* led is SOLID_ON */
134 on = IWL_LED_SOLID;
135 }
136
137 led_cmd.on = iwl_blink_compensation(priv, on,
138 priv->cfg->base_params->led_compensation);
139 led_cmd.off = iwl_blink_compensation(priv, off,
140 priv->cfg->base_params->led_compensation);
141
142 ret = iwl_send_led_cmd(priv, &led_cmd);
143 if (!ret) {
144 priv->blink_on = on;
145 priv->blink_off = off;
146 }
147 return ret;
148}
149
150static void iwl_led_brightness_set(struct led_classdev *led_cdev,
151 enum led_brightness brightness)
152{
153 struct iwl_priv *priv = container_of(led_cdev, struct iwl_priv, led);
154 unsigned long on = 0;
155 unsigned long off = 0;
156
157 if (brightness > 0)
158 on = IWL_LED_SOLID;
159 else
160 off = IWL_LED_SOLID;
161
162 iwl_led_cmd(priv, on, off);
163}
164
165static int iwl_led_blink_set(struct led_classdev *led_cdev,
166 unsigned long *delay_on,
167 unsigned long *delay_off)
168{
169 struct iwl_priv *priv = container_of(led_cdev, struct iwl_priv, led);
170
171 return iwl_led_cmd(priv, *delay_on, *delay_off);
172}
173
174void iwl_leds_init(struct iwl_priv *priv)
175{
176 int mode = iwlwifi_mod_params.led_mode;
177 int ret;
178
179 if (mode == IWL_LED_DISABLE) {
180 IWL_INFO(priv, "Led disabled\n");
181 return;
182 }
183 if (mode == IWL_LED_DEFAULT)
184 mode = priv->cfg->led_mode;
185
186 priv->led.name = kasprintf(GFP_KERNEL, "%s-led",
187 wiphy_name(priv->hw->wiphy));
188 priv->led.brightness_set = iwl_led_brightness_set;
189 priv->led.blink_set = iwl_led_blink_set;
190 priv->led.max_brightness = 1;
191
192 switch (mode) {
193 case IWL_LED_DEFAULT:
194 WARN_ON(1);
195 break;
196 case IWL_LED_BLINK:
197 priv->led.default_trigger =
198 ieee80211_create_tpt_led_trigger(priv->hw,
199 IEEE80211_TPT_LEDTRIG_FL_CONNECTED,
200 iwl_blink, ARRAY_SIZE(iwl_blink));
201 break;
202 case IWL_LED_RF_STATE:
203 priv->led.default_trigger =
204 ieee80211_get_radio_led_name(priv->hw);
205 break;
206 }
207
208 ret = led_classdev_register(priv->trans->dev, &priv->led);
209 if (ret) {
210 kfree(priv->led.name);
211 return;
212 }
213
214 priv->led_registered = true;
215}
216
217void iwl_leds_exit(struct iwl_priv *priv)
218{
219 if (!priv->led_registered)
220 return;
221
222 led_classdev_unregister(&priv->led);
223 kfree(priv->led.name);
224}