14273a380SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only
2e705c121SKalle Valo /******************************************************************************
3e705c121SKalle Valo *
4e705c121SKalle Valo * Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved.
579b6c8feSLuca Coelho * Copyright (C) 2019 Intel Corporation
6e705c121SKalle Valo *****************************************************************************/
7e705c121SKalle Valo
8e705c121SKalle Valo
9e705c121SKalle Valo #include <linux/kernel.h>
10e705c121SKalle Valo #include <linux/module.h>
11e705c121SKalle Valo #include <linux/delay.h>
12e705c121SKalle Valo #include <linux/skbuff.h>
13e705c121SKalle Valo #include <linux/netdevice.h>
14e705c121SKalle Valo #include <net/mac80211.h>
15e705c121SKalle Valo #include <linux/etherdevice.h>
16e705c121SKalle Valo #include <asm/unaligned.h>
17e705c121SKalle Valo #include "iwl-io.h"
18e705c121SKalle Valo #include "iwl-trans.h"
19e705c121SKalle Valo #include "iwl-modparams.h"
20e705c121SKalle Valo #include "dev.h"
21e705c121SKalle Valo #include "agn.h"
22e705c121SKalle Valo
23e705c121SKalle Valo /* Throughput OFF time(ms) ON time (ms)
24e705c121SKalle Valo * >300 25 25
25e705c121SKalle Valo * >200 to 300 40 40
26e705c121SKalle Valo * >100 to 200 55 55
27e705c121SKalle Valo * >70 to 100 65 65
28e705c121SKalle Valo * >50 to 70 75 75
29e705c121SKalle Valo * >20 to 50 85 85
30e705c121SKalle Valo * >10 to 20 95 95
31e705c121SKalle Valo * >5 to 10 110 110
32e705c121SKalle Valo * >1 to 5 130 130
33e705c121SKalle Valo * >0 to 1 167 167
34e705c121SKalle Valo * <=0 SOLID ON
35e705c121SKalle Valo */
36e705c121SKalle Valo static const struct ieee80211_tpt_blink iwl_blink[] = {
37e705c121SKalle Valo { .throughput = 0, .blink_time = 334 },
38e705c121SKalle Valo { .throughput = 1 * 1024 - 1, .blink_time = 260 },
39e705c121SKalle Valo { .throughput = 5 * 1024 - 1, .blink_time = 220 },
40e705c121SKalle Valo { .throughput = 10 * 1024 - 1, .blink_time = 190 },
41e705c121SKalle Valo { .throughput = 20 * 1024 - 1, .blink_time = 170 },
42e705c121SKalle Valo { .throughput = 50 * 1024 - 1, .blink_time = 150 },
43e705c121SKalle Valo { .throughput = 70 * 1024 - 1, .blink_time = 130 },
44e705c121SKalle Valo { .throughput = 100 * 1024 - 1, .blink_time = 110 },
45e705c121SKalle Valo { .throughput = 200 * 1024 - 1, .blink_time = 80 },
46e705c121SKalle Valo { .throughput = 300 * 1024 - 1, .blink_time = 50 },
47e705c121SKalle Valo };
48e705c121SKalle Valo
49e705c121SKalle Valo /* Set led register off */
iwlagn_led_enable(struct iwl_priv * priv)50e705c121SKalle Valo void iwlagn_led_enable(struct iwl_priv *priv)
51e705c121SKalle Valo {
52e705c121SKalle Valo iwl_write32(priv->trans, CSR_LED_REG, CSR_LED_REG_TURN_ON);
53e705c121SKalle Valo }
54e705c121SKalle Valo
55e705c121SKalle Valo /*
56e705c121SKalle Valo * Adjust led blink rate to compensate on a MAC Clock difference on every HW
57e705c121SKalle Valo * Led blink rate analysis showed an average deviation of 20% on 5000 series
58e705c121SKalle Valo * and up.
59e705c121SKalle Valo * Need to compensate on the led on/off time per HW according to the deviation
60e705c121SKalle Valo * to achieve the desired led frequency
61e705c121SKalle Valo * The calculation is: (100-averageDeviation)/100 * blinkTime
62e705c121SKalle Valo * For code efficiency the calculation will be:
63e705c121SKalle Valo * compensation = (100 - averageDeviation) * 64 / 100
64e705c121SKalle Valo * NewBlinkTime = (compensation * BlinkTime) / 64
65e705c121SKalle Valo */
iwl_blink_compensation(struct iwl_priv * priv,u8 time,u16 compensation)66e705c121SKalle Valo static inline u8 iwl_blink_compensation(struct iwl_priv *priv,
67e705c121SKalle Valo u8 time, u16 compensation)
68e705c121SKalle Valo {
69e705c121SKalle Valo if (!compensation) {
70e705c121SKalle Valo IWL_ERR(priv, "undefined blink compensation: "
71e705c121SKalle Valo "use pre-defined blinking time\n");
72e705c121SKalle Valo return time;
73e705c121SKalle Valo }
74e705c121SKalle Valo
75e705c121SKalle Valo return (u8)((time * compensation) >> 6);
76e705c121SKalle Valo }
77e705c121SKalle Valo
iwl_send_led_cmd(struct iwl_priv * priv,struct iwl_led_cmd * led_cmd)78e705c121SKalle Valo static int iwl_send_led_cmd(struct iwl_priv *priv, struct iwl_led_cmd *led_cmd)
79e705c121SKalle Valo {
80e705c121SKalle Valo struct iwl_host_cmd cmd = {
81e705c121SKalle Valo .id = REPLY_LEDS_CMD,
82e705c121SKalle Valo .len = { sizeof(struct iwl_led_cmd), },
83e705c121SKalle Valo .data = { led_cmd, },
84e705c121SKalle Valo .flags = CMD_ASYNC,
85e705c121SKalle Valo };
86e705c121SKalle Valo u32 reg;
87e705c121SKalle Valo
88e705c121SKalle Valo reg = iwl_read32(priv->trans, CSR_LED_REG);
89e705c121SKalle Valo if (reg != (reg & CSR_LED_BSM_CTRL_MSK))
90e705c121SKalle Valo iwl_write32(priv->trans, CSR_LED_REG,
91e705c121SKalle Valo reg & CSR_LED_BSM_CTRL_MSK);
92e705c121SKalle Valo
93e705c121SKalle Valo return iwl_dvm_send_cmd(priv, &cmd);
94e705c121SKalle Valo }
95e705c121SKalle Valo
96e705c121SKalle Valo /* Set led pattern command */
iwl_led_cmd(struct iwl_priv * priv,unsigned long on,unsigned long off)97e705c121SKalle Valo static int iwl_led_cmd(struct iwl_priv *priv,
98e705c121SKalle Valo unsigned long on,
99e705c121SKalle Valo unsigned long off)
100e705c121SKalle Valo {
101e705c121SKalle Valo struct iwl_led_cmd led_cmd = {
102e705c121SKalle Valo .id = IWL_LED_LINK,
103e705c121SKalle Valo .interval = IWL_DEF_LED_INTRVL
104e705c121SKalle Valo };
105e705c121SKalle Valo int ret;
106e705c121SKalle Valo
107e705c121SKalle Valo if (!test_bit(STATUS_READY, &priv->status))
108e705c121SKalle Valo return -EBUSY;
109e705c121SKalle Valo
110e705c121SKalle Valo if (priv->blink_on == on && priv->blink_off == off)
111e705c121SKalle Valo return 0;
112e705c121SKalle Valo
113e705c121SKalle Valo if (off == 0) {
114e705c121SKalle Valo /* led is SOLID_ON */
115e705c121SKalle Valo on = IWL_LED_SOLID;
116e705c121SKalle Valo }
117e705c121SKalle Valo
118e705c121SKalle Valo led_cmd.on = iwl_blink_compensation(priv, on,
1197d34a7d7SLuca Coelho priv->trans->trans_cfg->base_params->led_compensation);
120e705c121SKalle Valo led_cmd.off = iwl_blink_compensation(priv, off,
1217d34a7d7SLuca Coelho priv->trans->trans_cfg->base_params->led_compensation);
122e705c121SKalle Valo
123e705c121SKalle Valo ret = iwl_send_led_cmd(priv, &led_cmd);
124e705c121SKalle Valo if (!ret) {
125e705c121SKalle Valo priv->blink_on = on;
126e705c121SKalle Valo priv->blink_off = off;
127e705c121SKalle Valo }
128e705c121SKalle Valo return ret;
129e705c121SKalle Valo }
130e705c121SKalle Valo
iwl_led_brightness_set(struct led_classdev * led_cdev,enum led_brightness brightness)131e705c121SKalle Valo static void iwl_led_brightness_set(struct led_classdev *led_cdev,
132e705c121SKalle Valo enum led_brightness brightness)
133e705c121SKalle Valo {
134e705c121SKalle Valo struct iwl_priv *priv = container_of(led_cdev, struct iwl_priv, led);
135e705c121SKalle Valo unsigned long on = 0;
136bdf408ecSHubert Tarasiuk unsigned long off = 0;
137e705c121SKalle Valo
138e705c121SKalle Valo if (brightness > 0)
139e705c121SKalle Valo on = IWL_LED_SOLID;
140bdf408ecSHubert Tarasiuk else
141bdf408ecSHubert Tarasiuk off = IWL_LED_SOLID;
142e705c121SKalle Valo
143bdf408ecSHubert Tarasiuk iwl_led_cmd(priv, on, off);
144e705c121SKalle Valo }
145e705c121SKalle Valo
iwl_led_blink_set(struct led_classdev * led_cdev,unsigned long * delay_on,unsigned long * delay_off)146e705c121SKalle Valo static int iwl_led_blink_set(struct led_classdev *led_cdev,
147e705c121SKalle Valo unsigned long *delay_on,
148e705c121SKalle Valo unsigned long *delay_off)
149e705c121SKalle Valo {
150e705c121SKalle Valo struct iwl_priv *priv = container_of(led_cdev, struct iwl_priv, led);
151e705c121SKalle Valo
152e705c121SKalle Valo return iwl_led_cmd(priv, *delay_on, *delay_off);
153e705c121SKalle Valo }
154e705c121SKalle Valo
iwl_leds_init(struct iwl_priv * priv)155e705c121SKalle Valo void iwl_leds_init(struct iwl_priv *priv)
156e705c121SKalle Valo {
157e705c121SKalle Valo int mode = iwlwifi_mod_params.led_mode;
158e705c121SKalle Valo int ret;
159e705c121SKalle Valo
160e705c121SKalle Valo if (mode == IWL_LED_DISABLE) {
161e705c121SKalle Valo IWL_INFO(priv, "Led disabled\n");
162e705c121SKalle Valo return;
163e705c121SKalle Valo }
164e705c121SKalle Valo if (mode == IWL_LED_DEFAULT)
165e705c121SKalle Valo mode = priv->cfg->led_mode;
166e705c121SKalle Valo
167e705c121SKalle Valo priv->led.name = kasprintf(GFP_KERNEL, "%s-led",
168e705c121SKalle Valo wiphy_name(priv->hw->wiphy));
1695974fbb5SJohannes Berg if (!priv->led.name)
1705974fbb5SJohannes Berg return;
1715974fbb5SJohannes Berg
172e705c121SKalle Valo priv->led.brightness_set = iwl_led_brightness_set;
173e705c121SKalle Valo priv->led.blink_set = iwl_led_blink_set;
174e705c121SKalle Valo priv->led.max_brightness = 1;
175e705c121SKalle Valo
176e705c121SKalle Valo switch (mode) {
177e705c121SKalle Valo case IWL_LED_DEFAULT:
178e705c121SKalle Valo WARN_ON(1);
179e705c121SKalle Valo break;
180e705c121SKalle Valo case IWL_LED_BLINK:
181e705c121SKalle Valo priv->led.default_trigger =
182e705c121SKalle Valo ieee80211_create_tpt_led_trigger(priv->hw,
183e705c121SKalle Valo IEEE80211_TPT_LEDTRIG_FL_CONNECTED,
184e705c121SKalle Valo iwl_blink, ARRAY_SIZE(iwl_blink));
185e705c121SKalle Valo break;
186e705c121SKalle Valo case IWL_LED_RF_STATE:
187e705c121SKalle Valo priv->led.default_trigger =
188e705c121SKalle Valo ieee80211_get_radio_led_name(priv->hw);
189e705c121SKalle Valo break;
190e705c121SKalle Valo }
191e705c121SKalle Valo
192e705c121SKalle Valo ret = led_classdev_register(priv->trans->dev, &priv->led);
193e705c121SKalle Valo if (ret) {
194e705c121SKalle Valo kfree(priv->led.name);
195e705c121SKalle Valo return;
196e705c121SKalle Valo }
197e705c121SKalle Valo
198e705c121SKalle Valo priv->led_registered = true;
199e705c121SKalle Valo }
200e705c121SKalle Valo
iwl_leds_exit(struct iwl_priv * priv)201e705c121SKalle Valo void iwl_leds_exit(struct iwl_priv *priv)
202e705c121SKalle Valo {
203e705c121SKalle Valo if (!priv->led_registered)
204e705c121SKalle Valo return;
205e705c121SKalle Valo
206e705c121SKalle Valo led_classdev_unregister(&priv->led);
207e705c121SKalle Valo kfree(priv->led.name);
208e705c121SKalle Valo }
209