Vasanthakumar Thiagarajan wrote:
Signed-off-by: Vasanthakumar Thiagarajan <vasanth@xxxxxxxxxxx>
---
drivers/net/wireless/ath9k/ath9k.h | 16 ++--
drivers/net/wireless/ath9k/core.h | 28 +++++++
drivers/net/wireless/ath9k/hw.c | 33 +--------
drivers/net/wireless/ath9k/main.c | 138 +++++++++++++++++++++++++++++++++++-
drivers/net/wireless/ath9k/reg.h | 6 --
5 files changed, 175 insertions(+), 46 deletions(-)
diff --git a/drivers/net/wireless/ath9k/ath9k.h b/drivers/net/wireless/ath9k/ath9k.h
index 841893b..020b97f 100644
--- a/drivers/net/wireless/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath9k/ath9k.h
@@ -757,14 +757,11 @@ struct ath9k_node_stats {
#define ATH9K_RSSI_EP_MULTIPLIER (1<<7)
-enum ath9k_gpio_output_mux_type {
- ATH9K_GPIO_OUTPUT_MUX_AS_OUTPUT,
- ATH9K_GPIO_OUTPUT_MUX_AS_PCIE_ATTENTION_LED,
- ATH9K_GPIO_OUTPUT_MUX_AS_PCIE_POWER_LED,
- ATH9K_GPIO_OUTPUT_MUX_AS_MAC_NETWORK_LED,
- ATH9K_GPIO_OUTPUT_MUX_AS_MAC_POWER_LED,
- ATH9K_GPIO_OUTPUT_MUX_NUM_ENTRIES
-};
+#define AR_GPIO_OUTPUT_MUX_AS_OUTPUT 0
+#define AR_GPIO_OUTPUT_MUX_AS_PCIE_ATTENTION_LED 1
+#define AR_GPIO_OUTPUT_MUX_AS_PCIE_POWER_LED 2
+#define AR_GPIO_OUTPUT_MUX_AS_MAC_NETWORK_LED 5
+#define AR_GPIO_OUTPUT_MUX_AS_MAC_POWER_LED 6
enum {
ATH9K_RESET_POWER_ON,
@@ -1008,4 +1005,7 @@ void ath9k_hw_get_channel_centers(struct ath_hal *ah,
bool ath9k_get_channel_edges(struct ath_hal *ah,
u16 flags, u16 *low,
u16 *high);
+void ath9k_hw_cfg_output(struct ath_hal *ah, u32 gpio,
+ u32 ah_signal_type);
+void ath9k_hw_set_gpio(struct ath_hal *ah, u32 gpio, u32 value);
#endif
diff --git a/drivers/net/wireless/ath9k/core.h b/drivers/net/wireless/ath9k/core.h
index de1d12f..a4dc58d 100644
--- a/drivers/net/wireless/ath9k/core.h
+++ b/drivers/net/wireless/ath9k/core.h
@@ -39,6 +39,7 @@
#include <linux/scatterlist.h>
#include <asm/page.h>
#include <net/mac80211.h>
+#include <linux/leds.h>
#include "ath9k.h"
#include "rc.h"
@@ -803,6 +804,26 @@ void ath_slow_ant_div(struct ath_antdiv *antdiv,
void ath_setdefantenna(void *sc, u32 antenna);
/********************/
+/* LED Control */
+/********************/
+
+#define ATH_LED_PIN 1
+
+enum ath_led_type {
+ ATH_LED_RADIO,
+ ATH_LED_ASSOC,
+ ATH_LED_TX,
+ ATH_LED_RX
+};
+
+struct ath_led {
+ struct ath_softc *sc;
+ struct led_classdev led_cdev;
+ enum ath_led_type led_type;
+ bool registered;
+};
+
+/********************/
/* Main driver core */
/********************/
@@ -884,6 +905,7 @@ struct ath_ht_info {
#define SC_OP_PREAMBLE_SHORT BIT(7)
#define SC_OP_PROTECT_ENABLE BIT(8)
#define SC_OP_RXFLUSH BIT(9)
+#define SC_OP_LED_ASSOCIATED BIT(10)
struct ath_softc {
struct ieee80211_hw *hw;
@@ -988,6 +1010,12 @@ struct ath_softc {
spinlock_t sc_txbuflock;
spinlock_t sc_resetlock;
spinlock_t node_lock;
+
+ /* LEDs */
+ struct ath_led radio_led;
+ struct ath_led assoc_led;
+ struct ath_led tx_led;
+ struct ath_led rx_led;
};
int ath_init(u16 devid, struct ath_softc *sc);
diff --git a/drivers/net/wireless/ath9k/hw.c b/drivers/net/wireless/ath9k/hw.c
index 41d613b..ff5eedc 100644
--- a/drivers/net/wireless/ath9k/hw.c
+++ b/drivers/net/wireless/ath9k/hw.c
@@ -2800,32 +2800,11 @@ static void ath9k_hw_gpio_cfg_output_mux(struct ath_hal *ah,
}
}
-static bool ath9k_hw_cfg_output(struct ath_hal *ah, u32 gpio,
- enum ath9k_gpio_output_mux_type
- halSignalType)
+void ath9k_hw_cfg_output(struct ath_hal *ah, u32 gpio,
+ u32 ah_signal_type)
{
- u32 ah_signal_type;
u32 gpio_shift;
- static u32 MuxSignalConversionTable[] = {
-
- AR_GPIO_OUTPUT_MUX_AS_OUTPUT,
-
- AR_GPIO_OUTPUT_MUX_AS_PCIE_ATTENTION_LED,
-
- AR_GPIO_OUTPUT_MUX_AS_PCIE_POWER_LED,
-
- AR_GPIO_OUTPUT_MUX_AS_MAC_NETWORK_LED,
-
- AR_GPIO_OUTPUT_MUX_AS_MAC_POWER_LED,
- };
-
- if ((halSignalType >= 0)
- && (halSignalType < ARRAY_SIZE(MuxSignalConversionTable)))
- ah_signal_type = MuxSignalConversionTable[halSignalType];
- else
- return false;
-
ath9k_hw_gpio_cfg_output_mux(ah, gpio, ah_signal_type);
gpio_shift = 2 * gpio;
@@ -2834,16 +2813,12 @@ static bool ath9k_hw_cfg_output(struct ath_hal *ah, u32 gpio,
AR_GPIO_OE_OUT,
(AR_GPIO_OE_OUT_DRV_ALL << gpio_shift),
(AR_GPIO_OE_OUT_DRV << gpio_shift));
-
- return true;
}
-static bool ath9k_hw_set_gpio(struct ath_hal *ah, u32 gpio,
- u32 val)
+void ath9k_hw_set_gpio(struct ath_hal *ah, u32 gpio, u32 val)
{
REG_RMW(ah, AR_GPIO_IN_OUT, ((val & 1) << gpio),
AR_GPIO_BIT(gpio));
- return true;
}
static u32 ath9k_hw_gpio_get(struct ath_hal *ah, u32 gpio)
@@ -5919,7 +5894,7 @@ bool ath9k_hw_reset(struct ath_hal *ah,
else
ath9k_hw_set_gpio(ah, 9, 1);
}
- ath9k_hw_cfg_output(ah, 9, ATH9K_GPIO_OUTPUT_MUX_AS_OUTPUT);
+ ath9k_hw_cfg_output(ah, 9, AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
}
ecode = ath9k_hw_process_ini(ah, chan, macmode);
diff --git a/drivers/net/wireless/ath9k/main.c b/drivers/net/wireless/ath9k/main.c
index dca00c3..4424af2 100644
--- a/drivers/net/wireless/ath9k/main.c
+++ b/drivers/net/wireless/ath9k/main.c
@@ -1172,12 +1172,130 @@ enum ath9k_ht_macmode ath_cwm_macmode(struct ath_softc *sc)
return sc->sc_ht_info.tx_chan_width;
}
+/********************************/
+/* LED functions */
+/********************************/
+
+static void ath_led_brightness(struct led_classdev *led_cdev,
+ enum led_brightness brightness)
+{
+ struct ath_led *led = container_of(led_cdev, struct ath_led, led_cdev);
+ struct ath_softc *sc = led->sc;
+
+ switch (brightness) {
+ case LED_OFF:
+ if (led->led_type == ATH_LED_ASSOC ||
+ led->led_type == ATH_LED_RADIO)
+ sc->sc_flags &= ~SC_OP_LED_ASSOCIATED;
+ ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN,
+ (led->led_type == ATH_LED_RADIO) ? 1 :
+ !!(sc->sc_flags & SC_OP_LED_ASSOCIATED));
+ break;
+ case LED_FULL:
+ if (led->led_type == ATH_LED_ASSOC)
+ sc->sc_flags |= SC_OP_LED_ASSOCIATED;
+ ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 0);
+ break;
+ default:
+ break;
+ }
+}
+
+static int ath_register_led(struct ath_softc *sc, struct ath_led *led,
+ char *trigger, const char *name)
+{
+ int ret;
+
+ led->sc = sc;
+ led->led_cdev.name = name;
If i'm not mistaken, this has a similar problem as was recently fixed in
iwlwifi.
See the thread
"[PATCH] iwlwifi: Don't use buffer allocated on the stack for led names"
by Sven Wegener from 1/8/8
name is a stack pointer allocated in the calling function.
+ led->led_cdev.default_trigger = trigger;
+ led->led_cdev.brightness_set = ath_led_brightness;
+
+ ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &led->led_cdev);
+ if (ret)
+ DPRINTF(sc, ATH_DBG_FATAL, "Failed to register led:%s", name);
+ else
+ led->registered = 1;
+ return ret;
+}
+
+static void ath_unregister_led(struct ath_led *led)
+{
+ if (led->registered) {
+ led_classdev_unregister(&led->led_cdev);
+ led->registered = 0;
+ }
+}
+
+static void ath_deinit_leds(struct ath_softc *sc)
+{
+ ath_unregister_led(&sc->assoc_led);
+ sc->sc_flags &= ~SC_OP_LED_ASSOCIATED;
+ ath_unregister_led(&sc->tx_led);
+ ath_unregister_led(&sc->rx_led);
+ ath_unregister_led(&sc->radio_led);
+ ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
+}
+
+static void ath_init_leds(struct ath_softc *sc)
+{
+ char *trigger;
+ char name[32];
+ int ret;
+
+ /* Configure gpio 1 for output */
+ ath9k_hw_cfg_output(sc->sc_ah, ATH_LED_PIN,
+ AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
+ /* LED off, active low */
+ ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
+
+ trigger = ieee80211_get_radio_led_name(sc->hw);
+ snprintf(name, sizeof(name), "ath9k-%s:radio",
+ wiphy_name(sc->hw->wiphy));
+ ret = ath_register_led(sc, &sc->radio_led, trigger, name);
+ sc->radio_led.led_type = ATH_LED_RADIO;
+ if (ret)
+ goto fail;
+
+ trigger = ieee80211_get_assoc_led_name(sc->hw);
+ snprintf(name, sizeof(name), "ath9k-%s:assoc",
+ wiphy_name(sc->hw->wiphy));
+ ret = ath_register_led(sc, &sc->assoc_led, trigger, name);
+ sc->assoc_led.led_type = ATH_LED_ASSOC;
+ if (ret)
+ goto fail;
+
+ trigger = ieee80211_get_tx_led_name(sc->hw);
+ snprintf(name, sizeof(name), "ath9k-%s:tx",
+ wiphy_name(sc->hw->wiphy));
+ ret = ath_register_led(sc, &sc->tx_led, trigger, name);
+ sc->tx_led.led_type = ATH_LED_TX;
+ if (ret)
+ goto fail;
+
+ trigger = ieee80211_get_rx_led_name(sc->hw);
+ snprintf(name, sizeof(name), "ath9k-%s:rx",
+ wiphy_name(sc->hw->wiphy));
+ ret = ath_register_led(sc, &sc->rx_led, trigger, name);
+ sc->rx_led.led_type = ATH_LED_RX;
+ if (ret)
+ goto fail;
+
+ return;
+
+fail:
+ ath_deinit_leds(sc);
+}
+
static int ath_detach(struct ath_softc *sc)
{
struct ieee80211_hw *hw = sc->hw;
DPRINTF(sc, ATH_DBG_CONFIG, "%s: Detach ATH hw\n", __func__);
+ /* Deinit LED control */
+ ath_deinit_leds(sc);
+
/* Unregister hw */
ieee80211_unregister_hw(hw);
@@ -1271,18 +1389,21 @@ static int ath_attach(u16 devid,
goto bad;
}
+ /* Initialize LED control */
+ ath_init_leds(sc);
+
/* initialize tx/rx engine */
error = ath_tx_init(sc, ATH_TXBUF);
if (error != 0)
- goto bad1;
+ goto detach;
error = ath_rx_init(sc, ATH_RXBUF);
if (error != 0)
- goto bad1;
+ goto detach;
return 0;
-bad1:
+detach:
ath_detach(sc);
bad:
return error;
@@ -1427,6 +1548,10 @@ static void ath_pci_remove(struct pci_dev *pdev)
static int ath_pci_suspend(struct pci_dev *pdev, pm_message_t state)
{
+ struct ieee80211_hw *hw = pci_get_drvdata(pdev);
+ struct ath_softc *sc = hw->priv;
+
+ ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
pci_save_state(pdev);
pci_disable_device(pdev);
pci_set_power_state(pdev, 3);
@@ -1436,6 +1561,8 @@ static int ath_pci_suspend(struct pci_dev *pdev, pm_message_t state)
static int ath_pci_resume(struct pci_dev *pdev)
{
+ struct ieee80211_hw *hw = pci_get_drvdata(pdev);
+ struct ath_softc *sc = hw->priv;
u32 val;
int err;
@@ -1452,6 +1579,11 @@ static int ath_pci_resume(struct pci_dev *pdev)
if ((val & 0x0000ff00) != 0)
pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
+ /* Enable LED */
+ ath9k_hw_cfg_output(sc->sc_ah, ATH_LED_PIN,
+ AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
+ ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
+
return 0;
}
diff --git a/drivers/net/wireless/ath9k/reg.h b/drivers/net/wireless/ath9k/reg.h
index 42b0890..60617ae 100644
--- a/drivers/net/wireless/ath9k/reg.h
+++ b/drivers/net/wireless/ath9k/reg.h
@@ -899,12 +899,6 @@ enum {
#define AR_GPIO_OUTPUT_MUX2 0x4064
#define AR_GPIO_OUTPUT_MUX3 0x4068
-#define AR_GPIO_OUTPUT_MUX_AS_OUTPUT 0
-#define AR_GPIO_OUTPUT_MUX_AS_PCIE_ATTENTION_LED 1
-#define AR_GPIO_OUTPUT_MUX_AS_PCIE_POWER_LED 2
-#define AR_GPIO_OUTPUT_MUX_AS_MAC_NETWORK_LED 5
-#define AR_GPIO_OUTPUT_MUX_AS_MAC_POWER_LED 6
-
#define AR_INPUT_STATE 0x406c
#define AR_EEPROM_STATUS_DATA 0x407c
--
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