@@ -12,8 +12,9 @@ config BRCMSMAC
select CORDIC
---help---
This module adds support for PCIe wireless adapters based on Broadcom
- IEEE802.11n SoftMAC chipsets. If you choose to build a module, it'll
- be called brcmsmac.ko.
+ IEEE802.11n SoftMAC chipsets. It also has WLAN led support, which will
+ be available if you select BCMA_DRIVER_GPIO. If you choose to build a
+ module, the driver will be called brcmsmac.ko.
config BRCMFMAC
tristate "Broadcom IEEE802.11n embedded FullMAC WLAN driver"
@@ -43,6 +43,10 @@ BRCMSMAC_OFILES := \
brcms_trace_events.o \
debug.o
+ifdef CONFIG_BCMA_DRIVER_GPIO
+BRCMSMAC_OFILES += led.o
+endif
+
MODULEPFX := brcmsmac
obj-$(CONFIG_BRCMSMAC) += $(MODULEPFX).o
new file mode 100644
@@ -0,0 +1,127 @@
+#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;
+}
+
new file mode 100644
@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2012 Broadcom Corporation
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef _BRCM_LED_H_
+#define _BRCM_LED_H_
+struct brcms_led {
+ char name[32];
+ unsigned gpio;
+ bool active_low;
+};
+
+#ifdef CONFIG_BCMA_DRIVER_GPIO
+void brcms_led_unregister(struct brcms_info *wl);
+int brcms_led_register(struct brcms_info *wl);
+#else
+static inline void brcms_led_unregister(struct brcms_info *wl) {};
+static inline int brcms_led_register(struct brcms_info *wl)
+{
+ return -ENOTSUPP;
+};
+#endif
+
+#endif /* _BRCM_LED_H_ */
@@ -34,6 +34,7 @@
#include "mac80211_if.h"
#include "main.h"
#include "debug.h"
+#include "led.h"
#define N_TX_QUEUES 4 /* #tx queues on mac80211<->driver interface */
#define BRCMS_FLUSH_TIMEOUT 500 /* msec */
@@ -904,6 +905,7 @@ static void brcms_remove(struct bcma_device *pdev)
struct brcms_info *wl = hw->priv;
if (wl->wlc) {
+ brcms_led_unregister(wl);
wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
ieee80211_unregister_hw(hw);
@@ -1151,6 +1153,8 @@ static int brcms_bcma_probe(struct bcma_device *pdev)
pr_err("%s: brcms_attach failed!\n", __func__);
return -ENODEV;
}
+ brcms_led_register(wl);
+
return 0;
}
@@ -20,8 +20,10 @@
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/workqueue.h>
+#include <linux/leds.h>
#include "ucode_loader.h"
+#include "led.h"
/*
* Starting index for 5G rates in the
* legacy rate table.
@@ -81,6 +83,8 @@ struct brcms_info {
struct wiphy *wiphy;
struct brcms_ucode ucode;
bool mute_tx;
+ struct brcms_led radio_led;
+ struct led_classdev led_dev;
};
/* misc callbacks */