2009-04-15 20:33:57

by Larry Finger

[permalink] [raw]
Subject: [RFT/RFC V3] rtl8187: Implement TX/RX blink for LED

The following patch implements some control over the LED on RTL8187B and
RTL8187L devices. Triggers are registered for TX and RX. Whenever the
trigger event occurs, the LED is turned off for 1/20 second, then turned
back on.

Note: For those RTL8187X devices that are built into the computer and have
a LED that is expected to be controlled with a radio switch, this patch will
not operate that LED. That will take a separate patch to be prepared later.

Please test and comment.

The behavior described above is found for my Level One RTL8187B. Prior to this
patch, the LED was on continuously. On a Netgear WG111V2 RTL8187L, the LED
blinks erratically. Before the patch, the LED was off.

If you test, please report the status of the LED before and after applying the
patch. In addition, find the line that looks like "rtl8187: Customer ID 0x00" in
the dmesg output and report it. I also need to know if you have a B or L model.

Signed-off-by: Larry Finger <[email protected]>
---

V2 fixed a locking problem that caused the RTL8187L to fail.

V3 removes the code that turned the LED on at device startup, and turns
it off when the driver is unloaded.


Index: wireless-testing/drivers/net/wireless/Kconfig
===================================================================
--- wireless-testing.orig/drivers/net/wireless/Kconfig
+++ wireless-testing/drivers/net/wireless/Kconfig
@@ -433,6 +433,13 @@ config RTL8187

Thanks to Realtek for their support!

+# If possible, automatically enable LEDs for RTL8187.
+
+config RTL8187_LEDS
+ bool
+ depends on RTL8187 && MAC80211_LEDS && (LEDS_CLASS = y || LEDS_CLASS = RTL8187)
+ default y
+
config ADM8211
tristate "ADMtek ADM8211 support"
depends on MAC80211 && PCI && WLAN_80211 && EXPERIMENTAL
Index: wireless-testing/drivers/net/wireless/rtl818x/rtl8187_dev.c
===================================================================
--- wireless-testing.orig/drivers/net/wireless/rtl818x/rtl8187_dev.c
+++ wireless-testing/drivers/net/wireless/rtl818x/rtl8187_dev.c
@@ -29,6 +29,9 @@

#include "rtl8187.h"
#include "rtl8187_rtl8225.h"
+#ifdef CONFIG_RTL8187_LEDS
+#include "rtl8187_leds.h"
+#endif

MODULE_AUTHOR("Michael Wu <[email protected]>");
MODULE_AUTHOR("Andrea Merello <[email protected]>");
@@ -729,10 +732,10 @@ static const u8 rtl8187b_reg_table[][3]
{0x85, 0x24, 0}, {0x88, 0x54, 0}, {0x8B, 0xB8, 0}, {0x8C, 0x07, 0},
{0x8D, 0x00, 0}, {0x94, 0x1B, 0}, {0x95, 0x12, 0}, {0x96, 0x00, 0},
{0x97, 0x06, 0}, {0x9D, 0x1A, 0}, {0x9F, 0x10, 0}, {0xB4, 0x22, 0},
- {0xBE, 0x80, 0}, {0xDB, 0x00, 0}, {0xEE, 0x00, 0}, {0x91, 0x03, 0},
+ {0xBE, 0x80, 0}, {0xDB, 0x00, 0}, {0xEE, 0x00, 0}, {0x4C, 0x00, 2},

- {0x4C, 0x00, 2}, {0x9F, 0x00, 3}, {0x8C, 0x01, 0}, {0x8D, 0x10, 0},
- {0x8E, 0x08, 0}, {0x8F, 0x00, 0}
+ {0x9F, 0x00, 3}, {0x8C, 0x01, 0}, {0x8D, 0x10, 0}, {0x8E, 0x08, 0},
+ {0x8F, 0x00, 0}
};

static int rtl8187b_init_hw(struct ieee80211_hw *dev)
@@ -1004,6 +1007,8 @@ static void rtl8187_stop(struct ieee8021
reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
+ rtl818x_iowrite8(priv, &priv->map->GPIO, 0x01);
+ rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0x01);

while ((skb = skb_dequeue(&priv->b_tx_status.queue)))
dev_kfree_skb_any(skb);
@@ -1501,6 +1506,12 @@ static int __devinit rtl8187_probe(struc
wiphy_name(dev->wiphy), dev->wiphy->perm_addr,
chip_name, priv->asic_rev, priv->rf->name);

+#ifdef CONFIG_RTL8187_LEDS
+ eeprom_93cx6_read(&eeprom, 0x3F, &reg);
+ reg &= 0xFF;
+ rtl8187_leds_init(dev, reg);
+#endif
+
return 0;

err_free_dev:
@@ -1518,6 +1529,9 @@ static void __devexit rtl8187_disconnect
if (!dev)
return;

+#ifdef CONFIG_RTL8187_LEDS
+ rtl8187_leds_exit(dev);
+#endif
ieee80211_unregister_hw(dev);

priv = dev->priv;
Index: wireless-testing/drivers/net/wireless/rtl818x/Makefile
===================================================================
--- wireless-testing.orig/drivers/net/wireless/rtl818x/Makefile
+++ wireless-testing/drivers/net/wireless/rtl818x/Makefile
@@ -1,5 +1,5 @@
rtl8180-objs := rtl8180_dev.o rtl8180_rtl8225.o rtl8180_sa2400.o rtl8180_max2820.o rtl8180_grf5101.o
-rtl8187-objs := rtl8187_dev.o rtl8187_rtl8225.o
+rtl8187-objs := rtl8187_dev.o rtl8187_rtl8225.o rtl8187_leds.o

obj-$(CONFIG_RTL8180) += rtl8180.o
obj-$(CONFIG_RTL8187) += rtl8187.o
Index: wireless-testing/drivers/net/wireless/rtl818x/rtl8187_leds.c
===================================================================
--- /dev/null
+++ wireless-testing/drivers/net/wireless/rtl818x/rtl8187_leds.c
@@ -0,0 +1,209 @@
+/*
+ * Linux LED driver for RTL8187
+ *
+ * Copyright 2009 Larry Finger <[email protected]>
+ *
+ * Based on the LED handling in the r8187 driver, which is:
+ * Copyright (c) Realtek Semiconductor Corp. All rights reserved.
+ *
+ * Thanks to Realtek for their support!
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifdef CONFIG_RTL8187_LEDS
+
+#include <net/mac80211.h>
+#include <linux/usb.h>
+#include <linux/eeprom_93cx6.h>
+
+#include "rtl8187.h"
+#include "rtl8187_leds.h"
+
+static void led_turn_on(struct work_struct *work)
+{
+ /* As this routine does read/write operations on the hardware, it must
+ * be run from a work queue.
+ */
+ u8 reg;
+ struct rtl8187_priv *priv = container_of(work, struct rtl8187_priv,
+ led_on.work);
+ struct rtl8187_led *led = &priv->led_tx;
+
+ /* Don't change the LED, when the device is down. */
+ if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
+ return ;
+
+ mutex_lock(&priv->conf_mutex);
+ switch (led->ledpin) {
+ case LED_PIN_GPIO0:
+ rtl818x_iowrite8(priv, &priv->map->GPIO, 0x01);
+ rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0x00);
+ break;
+ case LED_PIN_LED0:
+ reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~(1 << 4);
+ rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
+ break;
+ case LED_PIN_LED1:
+ reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~(1 << 5);
+ rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
+ break;
+ case LED_PIN_HW:
+ default:
+ break;
+ }
+ mutex_unlock(&priv->conf_mutex);
+}
+
+static void led_turn_off(struct work_struct *work)
+{
+ /* As this routine does read/write operations on the hardware, it must
+ * be run from a work queue.
+ */
+ u8 reg;
+ struct rtl8187_priv *priv = container_of(work, struct rtl8187_priv,
+ led_on.work);
+ struct rtl8187_led *led = &priv->led_tx;
+
+ /* Don't change the LED, when the device is down. */
+ if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
+ return ;
+
+ mutex_lock(&priv->conf_mutex);
+ switch (led->ledpin) {
+ case LED_PIN_GPIO0:
+ rtl818x_iowrite8(priv, &priv->map->GPIO, 0x01);
+ rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0x01);
+ break;
+ case LED_PIN_LED0:
+ reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) | (1 << 4);
+ rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
+ break;
+ case LED_PIN_LED1:
+ reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) | (1 << 5);
+ rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
+ break;
+ case LED_PIN_HW:
+ default:
+ break;
+ }
+ mutex_unlock(&priv->conf_mutex);
+}
+
+/* Callback from the LED subsystem. */
+static void rtl8187_led_brightness_set(struct led_classdev *led_dev,
+ enum led_brightness brightness)
+{
+ struct rtl8187_led *led = container_of(led_dev, struct rtl8187_led,
+ led_dev);
+ struct ieee80211_hw *hw = led->dev;
+ struct rtl8187_priv *priv = hw->priv;
+
+ if (brightness == LED_OFF) {
+ queue_delayed_work(hw->workqueue, &priv->led_off, 0);
+ /* The LED is off for 1/20 sec so that it just blinks. */
+ queue_delayed_work(priv->dev->workqueue, &priv->led_on, HZ / 20);
+ } else
+ queue_delayed_work(hw->workqueue, &priv->led_on, 0);
+}
+
+static int rtl8187_register_led(struct ieee80211_hw *dev,
+ struct rtl8187_led *led, const char *name,
+ const char *default_trigger, u8 ledpin)
+{
+ int err;
+ struct rtl8187_priv *priv = dev->priv;
+
+ if (led->dev)
+ return -EEXIST;
+ if (!default_trigger)
+ return -EINVAL;
+ led->dev = dev;
+ led->ledpin = ledpin;
+ strncpy(led->name, name, sizeof(led->name));
+
+ led->led_dev.name = led->name;
+ led->led_dev.default_trigger = default_trigger;
+ led->led_dev.brightness_set = rtl8187_led_brightness_set;
+
+ err = led_classdev_register(&priv->udev->dev, &led->led_dev);
+ if (err) {
+ printk(KERN_INFO "LEDs: Failed to register %s\n", name);
+ led->dev = NULL;
+ return err;
+ }
+ return 0;
+}
+
+static void rtl8187_unregister_led(struct rtl8187_led *led)
+{
+ led_classdev_unregister(&led->led_dev);
+ led->dev = NULL;
+}
+
+void rtl8187_leds_init(struct ieee80211_hw *dev, u16 custid)
+{
+ struct rtl8187_priv *priv = dev->priv;
+ char name[RTL8187_LED_MAX_NAME_LEN + 1];
+ u8 ledpin;
+ int err;
+
+ /* According to the vendor driver, the LED operation depends on the
+ * customer ID encoded in the EEPROM
+ */
+ printk(KERN_INFO "rtl8187: Customer ID is 0x%02X\n", custid);
+ switch (custid) {
+ case EEPROM_CID_RSVD0:
+ case EEPROM_CID_RSVD1:
+ case EEPROM_CID_SERCOMM_PS:
+ case EEPROM_CID_QMI:
+ case EEPROM_CID_DELL:
+ case EEPROM_CID_TOSHIBA:
+ ledpin = LED_PIN_GPIO0;
+ break;
+ case EEPROM_CID_ALPHA0:
+ ledpin = LED_PIN_LED0;
+ break;
+ case EEPROM_CID_HW:
+ ledpin = LED_PIN_HW;
+ break;
+ default:
+ ledpin = LED_PIN_GPIO0;
+ }
+
+ INIT_DELAYED_WORK(&priv->led_on, led_turn_on);
+ INIT_DELAYED_WORK(&priv->led_off, led_turn_off);
+
+ snprintf(name, sizeof(name),
+ "rtl8187-%s::tx", wiphy_name(dev->wiphy));
+ err = rtl8187_register_led(dev, &priv->led_tx, name,
+ ieee80211_get_tx_led_name(dev), ledpin);
+ if (err)
+ goto error;
+ snprintf(name, sizeof(name),
+ "rtl8187-%s::rx", wiphy_name(dev->wiphy));
+ err = rtl8187_register_led(dev, &priv->led_rx, name,
+ ieee80211_get_rx_led_name(dev), ledpin);
+ if (!err)
+ return;
+ /* registration of RX LED failed - unregister TX */
+ rtl8187_unregister_led(&priv->led_tx);
+error:
+ /* If registration of either failed, cancel delayed work */
+ cancel_delayed_work_sync(&priv->led_off);
+ cancel_delayed_work_sync(&priv->led_on);
+}
+
+void rtl8187_leds_exit(struct ieee80211_hw *dev)
+{
+ struct rtl8187_priv *priv = dev->priv;
+
+ cancel_delayed_work_sync(&priv->led_off);
+ cancel_delayed_work_sync(&priv->led_on);
+ rtl8187_unregister_led(&priv->led_tx);
+ rtl8187_unregister_led(&priv->led_rx);
+}
+#endif /* def CONFIG_RTL8187_LED */
+
Index: wireless-testing/drivers/net/wireless/rtl818x/rtl8187_leds.h
===================================================================
--- /dev/null
+++ wireless-testing/drivers/net/wireless/rtl818x/rtl8187_leds.h
@@ -0,0 +1,57 @@
+/*
+ * Definitions for RTL8187 leds
+ *
+ * Copyright 2009 Larry Finger <[email protected]>
+ *
+ * Based on the LED handling in the r8187 driver, which is:
+ * Copyright (c) Realtek Semiconductor Corp. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef RTL8187_LED_H
+#define RTL8187_LED_H
+
+#ifdef CONFIG_RTL8187_LEDS
+
+#define RTL8187_LED_MAX_NAME_LEN 21
+
+#include <linux/leds.h>
+#include <linux/types.h>
+
+enum {
+ LED_PIN_LED0,
+ LED_PIN_LED1,
+ LED_PIN_GPIO0,
+ LED_PIN_HW
+};
+
+enum {
+ EEPROM_CID_RSVD0 = 0x00,
+ EEPROM_CID_RSVD1 = 0xFF,
+ EEPROM_CID_ALPHA0 = 0x01,
+ EEPROM_CID_SERCOMM_PS = 0x02,
+ EEPROM_CID_HW = 0x03,
+ EEPROM_CID_TOSHIBA = 0x04,
+ EEPROM_CID_QMI = 0x07,
+ EEPROM_CID_DELL = 0x08
+};
+
+struct rtl8187_led {
+ struct ieee80211_hw *dev;
+ /* The LED class device */
+ struct led_classdev led_dev;
+ /* The pin/method used to control the led */
+ u8 ledpin;
+ /* The unique name string for this LED device. */
+ char name[RTL8187_LED_MAX_NAME_LEN + 1];
+};
+
+void rtl8187_leds_init(struct ieee80211_hw *dev, u16 code);
+void rtl8187_leds_exit(struct ieee80211_hw *dev);
+
+#endif /* def CONFIG_RTL8187_LED */
+
+#endif /* RTL8187_LED_H */
Index: wireless-testing/drivers/net/wireless/rtl818x/rtl8187.h
===================================================================
--- wireless-testing.orig/drivers/net/wireless/rtl818x/rtl8187.h
+++ wireless-testing/drivers/net/wireless/rtl818x/rtl8187.h
@@ -16,6 +16,7 @@
#define RTL8187_H

#include "rtl818x.h"
+#include "rtl8187_leds.h"

#define RTL8187_EEPROM_TXPWR_BASE 0x05
#define RTL8187_EEPROM_MAC_ADDR 0x07
@@ -102,6 +103,12 @@ struct rtl8187_priv {
struct usb_anchor anchored;
struct delayed_work work;
struct ieee80211_hw *dev;
+#ifdef CONFIG_RTL8187_LEDS
+ struct rtl8187_led led_tx;
+ struct rtl8187_led led_rx;
+ struct delayed_work led_on;
+ struct delayed_work led_off;
+#endif
u16 txpwr_base;
u8 asic_rev;
u8 is_rtl8187b;


2009-04-16 15:10:19

by Larry Finger

[permalink] [raw]
Subject: Re: [RFT/RFC V3] rtl8187: Implement TX/RX blink for LED

Herton Ronaldo Krzesinski wrote:
> Em Quarta-feira 15 Abril 2009, =E0s 17:33:40, Larry Finger escreveu:
>> The following patch implements some control over the LED on RTL8187B=
and
>> RTL8187L devices. Triggers are registered for TX and RX. Whenever th=
e
>> trigger event occurs, the LED is turned off for 1/20 second, then tu=
rned
>> back on.
>>
>> Note: For those RTL8187X devices that are built into the computer an=
d have
>> a LED that is expected to be controlled with a radio switch, this pa=
tch
>> will not operate that LED. That will take a separate patch to be pre=
pared
>> later.
>>
>> Please test and comment.
>=20
> It didn't work for me, I need to fix this typo in V3 patch:
>=20
> ./drivers/net/wireless/rtl818x/rtl8187_leds.c
> --- ./drivers/net/wireless/rtl818x/rtl8187_leds.c.orig 2009-04-15=20
> 18:47:24.000000000 -0300
> +++ ./drivers/net/wireless/rtl818x/rtl8187_leds.c 2009-04-16=20
> 11:32:11.000000000 -0300
> @@ -64,7 +64,7 @@ static void led_turn_off(struct work_str
> */
> u8 reg;
> struct rtl8187_priv *priv =3D container_of(work, struct rtl8187_pri=
v,
> - led_on.work);
> + led_off.work);
> struct rtl8187_led *led =3D &priv->led_tx;
> =20
> /* Don't change the LED, when the device is down. */

Thanks for catching this. That was a copy-and-paste gone wrong.


> Also, it doens't turn on led on interface up, probably because we don=
't have a=20
> 'radio' led and now removed led on from init_regs, may be we could do=
this:
>=20
> @@ -186,8 +187,10 @@ void rtl8187_leds_init(struct ieee80211_
> "rtl8187-%s::rx", wiphy_name(dev->wiphy));
> err =3D rtl8187_register_led(dev, &priv->led_rx, name,
> ieee80211_get_rx_led_name(dev), ledpin);
> - if (!err)
> + if (!err) {
> + queue_delayed_work(priv->dev->workqueue, &priv->led_on, 0);
> return;
> + }

I had thought of this as a feature in that the LED comes on when the fi=
rst
transmit occurs, but it is more instructive to have it on as soon as th=
e LED
system is ready.

> /* registration of RX LED failed - unregister TX */
> rtl8187_unregister_led(&priv->led_tx);
> error:
>=20
>=20
> For the led off/stop code you added on rtl8187_stop, may be we would =
want to=20
> protect:
> rtl818x_iowrite8(priv, &priv->map->GPIO, 0x01);
> rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0x01);
> inside an ifdef CONFIG_RTL8187_LEDS, but it will not work also for ot=
her led=20
> hardware (the ones which don't use GPIO/GP_ENABLE to set leds. we cou=
ld do=20
> this instead on rtl8187_leds_exit:
>=20
> @@ -200,6 +203,7 @@ void rtl8187_leds_exit(struct ieee80211_
> {
> struct rtl8187_priv *priv =3D dev->priv;
> =20
> + queue_delayed_work(priv->dev->workqueue, &priv->led_off, 0);
> cancel_delayed_work_sync(&priv->led_off);
> cancel_delayed_work_sync(&priv->led_on);
> rtl8187_unregister_led(&priv->led_tx);
>=20
> but then it will not turn off led on interface stop, just on module r=
emoval...

If we are turning the LED on in rtl8187_leds_init(), it should be off i=
n
rtl8187_leds_exit(). I'll rework for V4.

Thanks for the review.

Larry

Subject: Re: [RFT/RFC V3] rtl8187: Implement TX/RX blink for LED

Em Quarta-feira 15 Abril 2009, =E0s 17:33:40, Larry Finger escreveu:
> The following patch implements some control over the LED on RTL8187B =
and
> RTL8187L devices. Triggers are registered for TX and RX. Whenever the
> trigger event occurs, the LED is turned off for 1/20 second, then tur=
ned
> back on.
>
> Note: For those RTL8187X devices that are built into the computer and=
have
> a LED that is expected to be controlled with a radio switch, this pat=
ch
> will not operate that LED. That will take a separate patch to be prep=
ared
> later.
>
> Please test and comment.

It didn't work for me, I need to fix this typo in V3 patch:

./drivers/net/wireless/rtl818x/rtl8187_leds.c
--- ./drivers/net/wireless/rtl818x/rtl8187_leds.c.orig 2009-04-15=20
18:47:24.000000000 -0300
+++ ./drivers/net/wireless/rtl818x/rtl8187_leds.c 2009-04-16=20
11:32:11.000000000 -0300
@@ -64,7 +64,7 @@ static void led_turn_off(struct work_str
*/
u8 reg;
struct rtl8187_priv *priv =3D container_of(work, struct rtl8187_priv,
- led_on.work);
+ led_off.work);
struct rtl8187_led *led =3D &priv->led_tx;
=20
/* Don't change the LED, when the device is down. */


Also, it doens't turn on led on interface up, probably because we don't=
have a=20
'radio' led and now removed led on from init_regs, may be we could do t=
his:

@@ -186,8 +187,10 @@ void rtl8187_leds_init(struct ieee80211_
"rtl8187-%s::rx", wiphy_name(dev->wiphy));
err =3D rtl8187_register_led(dev, &priv->led_rx, name,
ieee80211_get_rx_led_name(dev), ledpin);
- if (!err)
+ if (!err) {
+ queue_delayed_work(priv->dev->workqueue, &priv->led_on, 0);
return;
+ }
/* registration of RX LED failed - unregister TX */
rtl8187_unregister_led(&priv->led_tx);
error:


=46or the led off/stop code you added on rtl8187_stop, may be we would =
want to=20
protect:
rtl818x_iowrite8(priv, &priv->map->GPIO, 0x01);
rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0x01);
inside an ifdef CONFIG_RTL8187_LEDS, but it will not work also for othe=
r led=20
hardware (the ones which don't use GPIO/GP_ENABLE to set leds. we could=
do=20
this instead on rtl8187_leds_exit:

@@ -200,6 +203,7 @@ void rtl8187_leds_exit(struct ieee80211_
{
struct rtl8187_priv *priv =3D dev->priv;
=20
+ queue_delayed_work(priv->dev->workqueue, &priv->led_off, 0);
cancel_delayed_work_sync(&priv->led_off);
cancel_delayed_work_sync(&priv->led_on);
rtl8187_unregister_led(&priv->led_tx);

but then it will not turn off led on interface stop, just on module rem=
oval...

>
> The behavior described above is found for my Level One RTL8187B. Prio=
r to
> this patch, the LED was on continuously. On a Netgear WG111V2 RTL8187=
L, the
> LED blinks erratically. Before the patch, the LED was off.
>
> If you test, please report the status of the LED before and after app=
lying
> the patch. In addition, find the line that looks like "rtl8187: Custo=
mer ID
> 0x00" in the dmesg output and report it. I also need to know if you h=
ave a
> B or L model.
>
> Signed-off-by: Larry Finger <[email protected]>
> ---
>
> V2 fixed a locking problem that caused the RTL8187L to fail.
>
> V3 removes the code that turned the LED on at device startup, and tur=
ns
> it off when the driver is unloaded.
>
>
<snip>

--
[]'s
Herton

2009-04-16 02:39:33

by Hin-Tak Leung

[permalink] [raw]
Subject: Re: [RFT/RFC V3] rtl8187: Implement TX/RX blink for LED

On Wed, Apr 15, 2009 at 9:33 PM, Larry Finger <[email protected]> wrote:
> The following patch implements some control over the LED on RTL8187B and
> RTL8187L devices. Triggers are registered for TX and RX. Whenever the
> trigger event occurs, the LED is turned off for 1/20 second, then turned
> back on.
>
> Note: For those RTL8187X devices that are built into the computer and have
> a LED that is expected to be controlled with a radio switch, this patch will
> not operate that LED. That will take a separate patch to be prepared later.
>
> Please test and comment.
>
> The behavior described above is found for my Level One RTL8187B. Prior to this
> patch, the LED was on continuously. On a Netgear WG111V2 RTL8187L, the LED
> blinks erratically. Before the patch, the LED was off.
>
> If you test, please report the status of the LED before and after applying the
> patch. In addition, find the line that looks like "rtl8187: Customer ID 0x00" in
> the dmesg output and report it. I also need to know if you have a B or L model.
>
> Signed-off-by: Larry Finger <[email protected]>
Tested-by: Hin-Tak Leung <[email protected]>

Just checking it does nothing other than outputting these lines on my
hardware, as expected.
rtl8187: Customer ID is 0x04
Registered led device: rtl8187-phy0::tx
Registered led device: rtl8187-phy0::rx