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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 | // SPDX-License-Identifier: GPL-2.0-only /****************************************************************************** * * Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved. * Copyright (C) 2019 Intel Corporation *****************************************************************************/ #include <linux/kernel.h> #include <linux/module.h> #include <linux/delay.h> #include <linux/skbuff.h> #include <linux/netdevice.h> #include <net/mac80211.h> #include <linux/etherdevice.h> #include <asm/unaligned.h> #include "iwl-io.h" #include "iwl-trans.h" #include "iwl-modparams.h" #include "dev.h" #include "agn.h" /* Throughput OFF time(ms) ON time (ms) * >300 25 25 * >200 to 300 40 40 * >100 to 200 55 55 * >70 to 100 65 65 * >50 to 70 75 75 * >20 to 50 85 85 * >10 to 20 95 95 * >5 to 10 110 110 * >1 to 5 130 130 * >0 to 1 167 167 * <=0 SOLID ON */ static const struct ieee80211_tpt_blink iwl_blink[] = { { .throughput = 0, .blink_time = 334 }, { .throughput = 1 * 1024 - 1, .blink_time = 260 }, { .throughput = 5 * 1024 - 1, .blink_time = 220 }, { .throughput = 10 * 1024 - 1, .blink_time = 190 }, { .throughput = 20 * 1024 - 1, .blink_time = 170 }, { .throughput = 50 * 1024 - 1, .blink_time = 150 }, { .throughput = 70 * 1024 - 1, .blink_time = 130 }, { .throughput = 100 * 1024 - 1, .blink_time = 110 }, { .throughput = 200 * 1024 - 1, .blink_time = 80 }, { .throughput = 300 * 1024 - 1, .blink_time = 50 }, }; /* Set led register off */ void iwlagn_led_enable(struct iwl_priv *priv) { iwl_write32(priv->trans, CSR_LED_REG, CSR_LED_REG_TURN_ON); } /* * Adjust led blink rate to compensate on a MAC Clock difference on every HW * Led blink rate analysis showed an average deviation of 20% on 5000 series * and up. * Need to compensate on the led on/off time per HW according to the deviation * to achieve the desired led frequency * The calculation is: (100-averageDeviation)/100 * blinkTime * For code efficiency the calculation will be: * compensation = (100 - averageDeviation) * 64 / 100 * NewBlinkTime = (compensation * BlinkTime) / 64 */ static inline u8 iwl_blink_compensation(struct iwl_priv *priv, u8 time, u16 compensation) { if (!compensation) { IWL_ERR(priv, "undefined blink compensation: " "use pre-defined blinking time\n"); return time; } return (u8)((time * compensation) >> 6); } static int iwl_send_led_cmd(struct iwl_priv *priv, struct iwl_led_cmd *led_cmd) { struct iwl_host_cmd cmd = { .id = REPLY_LEDS_CMD, .len = { sizeof(struct iwl_led_cmd), }, .data = { led_cmd, }, .flags = CMD_ASYNC, }; u32 reg; reg = iwl_read32(priv->trans, CSR_LED_REG); if (reg != (reg & CSR_LED_BSM_CTRL_MSK)) iwl_write32(priv->trans, CSR_LED_REG, reg & CSR_LED_BSM_CTRL_MSK); return iwl_dvm_send_cmd(priv, &cmd); } /* Set led pattern command */ static int iwl_led_cmd(struct iwl_priv *priv, unsigned long on, unsigned long off) { struct iwl_led_cmd led_cmd = { .id = IWL_LED_LINK, .interval = IWL_DEF_LED_INTRVL }; int ret; if (!test_bit(STATUS_READY, &priv->status)) return -EBUSY; if (priv->blink_on == on && priv->blink_off == off) return 0; if (off == 0) { /* led is SOLID_ON */ on = IWL_LED_SOLID; } led_cmd.on = iwl_blink_compensation(priv, on, priv->trans->trans_cfg->base_params->led_compensation); led_cmd.off = iwl_blink_compensation(priv, off, priv->trans->trans_cfg->base_params->led_compensation); ret = iwl_send_led_cmd(priv, &led_cmd); if (!ret) { priv->blink_on = on; priv->blink_off = off; } return ret; } static void iwl_led_brightness_set(struct led_classdev *led_cdev, enum led_brightness brightness) { struct iwl_priv *priv = container_of(led_cdev, struct iwl_priv, led); unsigned long on = 0; unsigned long off = 0; if (brightness > 0) on = IWL_LED_SOLID; else off = IWL_LED_SOLID; iwl_led_cmd(priv, on, off); } static int iwl_led_blink_set(struct led_classdev *led_cdev, unsigned long *delay_on, unsigned long *delay_off) { struct iwl_priv *priv = container_of(led_cdev, struct iwl_priv, led); return iwl_led_cmd(priv, *delay_on, *delay_off); } void iwl_leds_init(struct iwl_priv *priv) { int mode = iwlwifi_mod_params.led_mode; int ret; if (mode == IWL_LED_DISABLE) { IWL_INFO(priv, "Led disabled\n"); return; } if (mode == IWL_LED_DEFAULT) mode = priv->cfg->led_mode; priv->led.name = kasprintf(GFP_KERNEL, "%s-led", wiphy_name(priv->hw->wiphy)); if (!priv->led.name) return; priv->led.brightness_set = iwl_led_brightness_set; priv->led.blink_set = iwl_led_blink_set; priv->led.max_brightness = 1; switch (mode) { case IWL_LED_DEFAULT: WARN_ON(1); break; case IWL_LED_BLINK: priv->led.default_trigger = ieee80211_create_tpt_led_trigger(priv->hw, IEEE80211_TPT_LEDTRIG_FL_CONNECTED, iwl_blink, ARRAY_SIZE(iwl_blink)); break; case IWL_LED_RF_STATE: priv->led.default_trigger = ieee80211_get_radio_led_name(priv->hw); break; } ret = led_classdev_register(priv->trans->dev, &priv->led); if (ret) { kfree(priv->led.name); return; } priv->led_registered = true; } void iwl_leds_exit(struct iwl_priv *priv) { if (!priv->led_registered) return; led_classdev_unregister(&priv->led); kfree(priv->led.name); } |