#include <net/mac80211.h> #include <linux/bcma/bcma_driver_chipcommon.h> #include <linux/gpio.h> #include "mac80211_if.h" #include "pub.h" #include "main.h" #include "led.h" /* number of leds */ #define BRCMS_LED_NO 4 /* behavior mask */ #define BRCMS_LED_BEH_MASK 0x7f /* activelow (polarity) bit */ #define BRCMS_LED_AL_MASK 0x80 /* radio enabled */ #define BRCMS_LED_RADIO 3 static void brcms_radio_led_ctrl(struct brcms_info *wl, bool state) { if (wl->radio_led.gpio == -1) return; if (wl->radio_led.active_low) state = !state; if (state) gpio_set_value(wl->radio_led.gpio, 1); else gpio_set_value(wl->radio_led.gpio, 0); } /* Callback from the LED subsystem. */ static void brcms_led_brightness_set(struct led_classdev *led_dev, enum led_brightness brightness) { struct brcms_info *wl = container_of(led_dev, struct brcms_info, led_dev); brcms_radio_led_ctrl(wl, brightness); } void brcms_led_unregister(struct brcms_info *wl) { if (wl->led_dev.dev) led_classdev_unregister(&wl->led_dev); if (wl->radio_led.gpio != -1) gpio_free(wl->radio_led.gpio); } int brcms_led_register(struct brcms_info *wl) { int i, err; struct brcms_led *radio_led = &wl->radio_led; /* get CC core */ struct bcma_drv_cc *cc_drv = &wl->wlc->hw->d11core->bus->drv_cc; struct gpio_chip *bcma_gpio = &cc_drv->gpio; struct ssb_sprom *sprom = &wl->wlc->hw->d11core->bus->sprom; u8 *leds[] = { &sprom->gpio0, &sprom->gpio1, &sprom->gpio2, &sprom->gpio3 }; unsigned gpio = -1; bool active_low = false; /* none by default */ radio_led->gpio = -1; radio_led->active_low = false; if (!bcma_gpio || !gpio_is_valid(bcma_gpio->base)) return -ENODEV; /* find radio enabled LED */ for (i = 0; i < BRCMS_LED_NO; i++) { u8 led = *leds[i]; if ((led & BRCMS_LED_BEH_MASK) == BRCMS_LED_RADIO) { gpio = bcma_gpio->base + i; if (led & BRCMS_LED_AL_MASK) active_low = true; break; } } if (gpio == -1 || !gpio_is_valid(gpio)) return -ENODEV; /* request and configure LED gpio */ err = gpio_request_one(gpio, active_low ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW, "radio on"); if (err) { wiphy_err(wl->wiphy, "requesting led gpio %d failed (err: %d)\n", gpio, err); return err; } err = gpio_direction_output(gpio, 1); if (err) { wiphy_err(wl->wiphy, "cannot set led gpio %d to output (err: %d)\n", gpio, err); return err; } snprintf(wl->radio_led.name, sizeof(wl->radio_led.name), "brcmsmac-%s:radio", wiphy_name(wl->wiphy)); wl->led_dev.name = wl->radio_led.name; wl->led_dev.default_trigger = ieee80211_get_radio_led_name(wl->pub->ieee_hw); wl->led_dev.brightness_set = brcms_led_brightness_set; err = led_classdev_register(wiphy_dev(wl->wiphy), &wl->led_dev); if (err) { wiphy_err(wl->wiphy, "cannot register led device: %s (err: %d)\n", wl->radio_led.name, err); return err; } wiphy_info(wl->wiphy, "registered radio enabled led device: %s gpio: %d\n", wl->radio_led.name, gpio); radio_led->gpio = gpio; radio_led->active_low = active_low; return 0; }