aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/iwlwifi/iwl-led.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-led.c')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-led.c253
1 files changed, 128 insertions, 125 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-led.c b/drivers/net/wireless/iwlwifi/iwl-led.c
index db5bfcb036ca..7c23beb49d7c 100644
--- a/drivers/net/wireless/iwlwifi/iwl-led.c
+++ b/drivers/net/wireless/iwlwifi/iwl-led.c
@@ -1,6 +1,6 @@
1/****************************************************************************** 1/******************************************************************************
2 * 2 *
3 * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved. 3 * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
4 * 4 *
5 * This program is free software; you can redistribute it and/or modify it 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 6 * under the terms of version 2 of the GNU General Public License as
@@ -45,39 +45,45 @@
45/* default: IWL_LED_BLINK(0) using blinking index table */ 45/* default: IWL_LED_BLINK(0) using blinking index table */
46static int led_mode; 46static int led_mode;
47module_param(led_mode, int, S_IRUGO); 47module_param(led_mode, int, S_IRUGO);
48MODULE_PARM_DESC(led_mode, "led mode: 0=blinking, 1=On(RF On)/Off(RF Off), " 48MODULE_PARM_DESC(led_mode, "0=system default, "
49 "(default 0)"); 49 "1=On(RF On)/Off(RF Off), 2=blinking");
50 50
51 51/* Throughput OFF time(ms) ON time (ms)
52static const struct { 52 * >300 25 25
53 u16 tpt; /* Mb/s */ 53 * >200 to 300 40 40
54 u8 on_time; 54 * >100 to 200 55 55
55 u8 off_time; 55 * >70 to 100 65 65
56} blink_tbl[] = 56 * >50 to 70 75 75
57{ 57 * >20 to 50 85 85
58 {300, 25, 25}, 58 * >10 to 20 95 95
59 {200, 40, 40}, 59 * >5 to 10 110 110
60 {100, 55, 55}, 60 * >1 to 5 130 130
61 {70, 65, 65}, 61 * >0 to 1 167 167
62 {50, 75, 75}, 62 * <=0 SOLID ON
63 {20, 85, 85}, 63 */
64 {10, 95, 95}, 64static const struct ieee80211_tpt_blink iwl_blink[] = {
65 {5, 110, 110}, 65 { .throughput = 0, .blink_time = 334 },
66 {1, 130, 130}, 66 { .throughput = 1 * 1024 - 1, .blink_time = 260 },
67 {0, 167, 167}, 67 { .throughput = 5 * 1024 - 1, .blink_time = 220 },
68 /* SOLID_ON */ 68 { .throughput = 10 * 1024 - 1, .blink_time = 190 },
69 {-1, IWL_LED_SOLID, 0} 69 { .throughput = 20 * 1024 - 1, .blink_time = 170 },
70 { .throughput = 50 * 1024 - 1, .blink_time = 150 },
71 { .throughput = 70 * 1024 - 1, .blink_time = 130 },
72 { .throughput = 100 * 1024 - 1, .blink_time = 110 },
73 { .throughput = 200 * 1024 - 1, .blink_time = 80 },
74 { .throughput = 300 * 1024 - 1, .blink_time = 50 },
70}; 75};
71 76
72#define IWL_1MB_RATE (128 * 1024) 77/* Set led register off */
73#define IWL_LED_THRESHOLD (16) 78void iwlagn_led_enable(struct iwl_priv *priv)
74#define IWL_MAX_BLINK_TBL (ARRAY_SIZE(blink_tbl) - 1) /* exclude SOLID_ON */ 79{
75#define IWL_SOLID_BLINK_IDX (ARRAY_SIZE(blink_tbl) - 1) 80 iwl_write32(priv, CSR_LED_REG, CSR_LED_REG_TRUN_ON);
81}
76 82
77/* 83/*
78 * Adjust led blink rate to compensate on a MAC Clock difference on every HW 84 * Adjust led blink rate to compensate on a MAC Clock difference on every HW
79 * Led blink rate analysis showed an average deviation of 0% on 3945, 85 * Led blink rate analysis showed an average deviation of 20% on 5000 series
80 * 5% on 4965 HW and 20% on 5000 series and up. 86 * and up.
81 * Need to compensate on the led on/off time per HW according to the deviation 87 * Need to compensate on the led on/off time per HW according to the deviation
82 * to achieve the desired led frequency 88 * to achieve the desired led frequency
83 * The calculation is: (100-averageDeviation)/100 * blinkTime 89 * The calculation is: (100-averageDeviation)/100 * blinkTime
@@ -97,129 +103,126 @@ static inline u8 iwl_blink_compensation(struct iwl_priv *priv,
97 return (u8)((time * compensation) >> 6); 103 return (u8)((time * compensation) >> 6);
98} 104}
99 105
106static int iwl_send_led_cmd(struct iwl_priv *priv, struct iwl_led_cmd *led_cmd)
107{
108 struct iwl_host_cmd cmd = {
109 .id = REPLY_LEDS_CMD,
110 .len = { sizeof(struct iwl_led_cmd), },
111 .data = { led_cmd, },
112 .flags = CMD_ASYNC,
113 .callback = NULL,
114 };
115 u32 reg;
116
117 reg = iwl_read32(priv, CSR_LED_REG);
118 if (reg != (reg & CSR_LED_BSM_CTRL_MSK))
119 iwl_write32(priv, CSR_LED_REG, reg & CSR_LED_BSM_CTRL_MSK);
120
121 return iwl_send_cmd(priv, &cmd);
122}
123
100/* Set led pattern command */ 124/* Set led pattern command */
101static int iwl_led_pattern(struct iwl_priv *priv, unsigned int idx) 125static int iwl_led_cmd(struct iwl_priv *priv,
126 unsigned long on,
127 unsigned long off)
102{ 128{
103 struct iwl_led_cmd led_cmd = { 129 struct iwl_led_cmd led_cmd = {
104 .id = IWL_LED_LINK, 130 .id = IWL_LED_LINK,
105 .interval = IWL_DEF_LED_INTRVL 131 .interval = IWL_DEF_LED_INTRVL
106 }; 132 };
133 int ret;
107 134
108 BUG_ON(idx > IWL_MAX_BLINK_TBL); 135 if (!test_bit(STATUS_READY, &priv->status))
136 return -EBUSY;
109 137
110 IWL_DEBUG_LED(priv, "Led blink time compensation= %u\n", 138 if (priv->blink_on == on && priv->blink_off == off)
111 priv->cfg->led_compensation); 139 return 0;
112 led_cmd.on =
113 iwl_blink_compensation(priv, blink_tbl[idx].on_time,
114 priv->cfg->led_compensation);
115 led_cmd.off =
116 iwl_blink_compensation(priv, blink_tbl[idx].off_time,
117 priv->cfg->led_compensation);
118 140
119 return priv->cfg->ops->led->cmd(priv, &led_cmd); 141 if (off == 0) {
120} 142 /* led is SOLID_ON */
143 on = IWL_LED_SOLID;
144 }
121 145
122int iwl_led_start(struct iwl_priv *priv) 146 IWL_DEBUG_LED(priv, "Led blink time compensation=%u\n",
123{ 147 priv->cfg->base_params->led_compensation);
124 return priv->cfg->ops->led->on(priv); 148 led_cmd.on = iwl_blink_compensation(priv, on,
149 priv->cfg->base_params->led_compensation);
150 led_cmd.off = iwl_blink_compensation(priv, off,
151 priv->cfg->base_params->led_compensation);
152
153 ret = iwl_send_led_cmd(priv, &led_cmd);
154 if (!ret) {
155 priv->blink_on = on;
156 priv->blink_off = off;
157 }
158 return ret;
125} 159}
126EXPORT_SYMBOL(iwl_led_start);
127 160
128int iwl_led_associate(struct iwl_priv *priv) 161static void iwl_led_brightness_set(struct led_classdev *led_cdev,
162 enum led_brightness brightness)
129{ 163{
130 IWL_DEBUG_LED(priv, "Associated\n"); 164 struct iwl_priv *priv = container_of(led_cdev, struct iwl_priv, led);
131 if (led_mode == IWL_LED_BLINK) 165 unsigned long on = 0;
132 priv->allow_blinking = 1;
133 priv->last_blink_time = jiffies;
134 166
135 return 0; 167 if (brightness > 0)
136} 168 on = IWL_LED_SOLID;
137 169
138int iwl_led_disassociate(struct iwl_priv *priv) 170 iwl_led_cmd(priv, on, 0);
139{
140 priv->allow_blinking = 0;
141
142 return 0;
143} 171}
144 172
145/* 173static int iwl_led_blink_set(struct led_classdev *led_cdev,
146 * calculate blink rate according to last second Tx/Rx activities 174 unsigned long *delay_on,
147 */ 175 unsigned long *delay_off)
148static int iwl_get_blink_rate(struct iwl_priv *priv)
149{ 176{
150 int i; 177 struct iwl_priv *priv = container_of(led_cdev, struct iwl_priv, led);
151 /* count both tx and rx traffic to be able to 178
152 * handle traffic in either direction 179 return iwl_led_cmd(priv, *delay_on, *delay_off);
153 */
154 u64 current_tpt = priv->tx_stats.data_bytes +
155 priv->rx_stats.data_bytes;
156 s64 tpt = current_tpt - priv->led_tpt;
157
158 if (tpt < 0) /* wraparound */
159 tpt = -tpt;
160
161 IWL_DEBUG_LED(priv, "tpt %lld current_tpt %llu\n",
162 (long long)tpt,
163 (unsigned long long)current_tpt);
164 priv->led_tpt = current_tpt;
165
166 if (!priv->allow_blinking)
167 i = IWL_MAX_BLINK_TBL;
168 else
169 for (i = 0; i < IWL_MAX_BLINK_TBL; i++)
170 if (tpt > (blink_tbl[i].tpt * IWL_1MB_RATE))
171 break;
172
173 IWL_DEBUG_LED(priv, "LED BLINK IDX=%d\n", i);
174 return i;
175} 180}
176 181
177/* 182void iwl_leds_init(struct iwl_priv *priv)
178 * this function called from handler. Since setting Led command can
179 * happen very frequent we postpone led command to be called from
180 * REPLY handler so we know ucode is up
181 */
182void iwl_leds_background(struct iwl_priv *priv)
183{ 183{
184 u8 blink_idx; 184 int mode = led_mode;
185 185 int ret;
186 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) { 186
187 priv->last_blink_time = 0; 187 if (mode == IWL_LED_DEFAULT)
188 return; 188 mode = priv->cfg->led_mode;
189 } 189
190 if (iwl_is_rfkill(priv)) { 190 priv->led.name = kasprintf(GFP_KERNEL, "%s-led",
191 priv->last_blink_time = 0; 191 wiphy_name(priv->hw->wiphy));
192 return; 192 priv->led.brightness_set = iwl_led_brightness_set;
193 priv->led.blink_set = iwl_led_blink_set;
194 priv->led.max_brightness = 1;
195
196 switch (mode) {
197 case IWL_LED_DEFAULT:
198 WARN_ON(1);
199 break;
200 case IWL_LED_BLINK:
201 priv->led.default_trigger =
202 ieee80211_create_tpt_led_trigger(priv->hw,
203 IEEE80211_TPT_LEDTRIG_FL_CONNECTED,
204 iwl_blink, ARRAY_SIZE(iwl_blink));
205 break;
206 case IWL_LED_RF_STATE:
207 priv->led.default_trigger =
208 ieee80211_get_radio_led_name(priv->hw);
209 break;
193 } 210 }
194 211
195 if (!priv->allow_blinking) { 212 ret = led_classdev_register(&priv->pci_dev->dev, &priv->led);
196 priv->last_blink_time = 0; 213 if (ret) {
197 if (priv->last_blink_rate != IWL_SOLID_BLINK_IDX) { 214 kfree(priv->led.name);
198 priv->last_blink_rate = IWL_SOLID_BLINK_IDX;
199 iwl_led_pattern(priv, IWL_SOLID_BLINK_IDX);
200 }
201 return; 215 return;
202 } 216 }
203 if (!priv->last_blink_time ||
204 !time_after(jiffies, priv->last_blink_time +
205 msecs_to_jiffies(1000)))
206 return;
207
208 blink_idx = iwl_get_blink_rate(priv);
209 217
210 /* call only if blink rate change */ 218 priv->led_registered = true;
211 if (blink_idx != priv->last_blink_rate)
212 iwl_led_pattern(priv, blink_idx);
213
214 priv->last_blink_time = jiffies;
215 priv->last_blink_rate = blink_idx;
216} 219}
217EXPORT_SYMBOL(iwl_leds_background);
218 220
219void iwl_leds_init(struct iwl_priv *priv) 221void iwl_leds_exit(struct iwl_priv *priv)
220{ 222{
221 priv->last_blink_rate = 0; 223 if (!priv->led_registered)
222 priv->last_blink_time = 0; 224 return;
223 priv->allow_blinking = 0; 225
226 led_classdev_unregister(&priv->led);
227 kfree(priv->led.name);
224} 228}
225EXPORT_SYMBOL(iwl_leds_init);
generated by cgit v1.2.2 (git 2.25.0) at 2025-04-10 03:33:12 -0400