1 /******************************************************************************
3 * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
18 * The full GNU General Public License is included in this distribution in the
19 * file called LICENSE.
21 * Contact Information:
22 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25 *****************************************************************************/
28 #include <linux/kernel.h>
29 #include <linux/module.h>
30 #include <linux/version.h>
31 #include <linux/init.h>
32 #include <linux/pci.h>
33 #include <linux/dma-mapping.h>
34 #include <linux/delay.h>
35 #include <linux/skbuff.h>
36 #include <linux/netdevice.h>
37 #include <linux/wireless.h>
38 #include <net/mac80211.h>
39 #include <linux/etherdevice.h>
40 #include <asm/unaligned.h>
43 #include "iwl-helpers.h"
45 #define IWL_1MB_RATE (128 * 1024)
46 #define IWL_LED_THRESHOLD (16)
47 #define IWL_MAX_BLINK_TBL (10)
67 static int iwl3945_led_cmd_callback(struct iwl3945_priv
*priv
,
68 struct iwl3945_cmd
*cmd
,
75 /* Send led command */
76 static int iwl_send_led_cmd(struct iwl3945_priv
*priv
,
77 struct iwl3945_led_cmd
*led_cmd
)
79 struct iwl3945_host_cmd cmd
= {
81 .len
= sizeof(struct iwl3945_led_cmd
),
83 .meta
.flags
= CMD_ASYNC
,
84 .meta
.u
.callback
= iwl3945_led_cmd_callback
87 return iwl3945_send_cmd(priv
, &cmd
);
91 /* Set led on command */
92 static int iwl3945_led_on(struct iwl3945_priv
*priv
, int led_id
)
94 struct iwl3945_led_cmd led_cmd
= {
98 .interval
= IWL_DEF_LED_INTRVL
100 return iwl_send_led_cmd(priv
, &led_cmd
);
103 /* Set led on command */
104 static int iwl3945_led_pattern(struct iwl3945_priv
*priv
, int led_id
,
105 enum led_brightness brightness
)
107 struct iwl3945_led_cmd led_cmd
= {
111 .interval
= IWL_DEF_LED_INTRVL
113 if (brightness
== LED_FULL
) {
114 led_cmd
.on
= IWL_LED_SOLID
;
117 return iwl_send_led_cmd(priv
, &led_cmd
);
120 /* Set led register off */
121 static int iwl3945_led_on_reg(struct iwl3945_priv
*priv
, int led_id
)
123 IWL_DEBUG_LED("led on %d\n", led_id
);
124 return iwl3945_led_on(priv
, led_id
);
127 /* Set led off command */
128 static int iwl3945_led_off(struct iwl3945_priv
*priv
, int led_id
)
130 struct iwl3945_led_cmd led_cmd
= {
134 .interval
= IWL_DEF_LED_INTRVL
136 IWL_DEBUG_LED("led off %d\n", led_id
);
137 return iwl_send_led_cmd(priv
, &led_cmd
);
140 /* Set led register off */
141 static int iwl3945_led_off_reg(struct iwl3945_priv
*priv
, int led_id
)
143 iwl3945_led_off(priv
, led_id
);
147 /* Set led blink command */
148 static int iwl3945_led_not_solid(struct iwl3945_priv
*priv
, int led_id
,
151 struct iwl3945_led_cmd led_cmd
= {
155 .interval
= IWL_DEF_LED_INTRVL
158 return iwl_send_led_cmd(priv
, &led_cmd
);
163 * brightness call back function for Tx/Rx LED
165 static int iwl3945_led_associated(struct iwl3945_priv
*priv
, int led_id
)
167 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
) ||
168 !test_bit(STATUS_READY
, &priv
->status
))
172 /* start counting Tx/Rx bytes */
173 if (!priv
->last_blink_time
&& priv
->allow_blinking
)
174 priv
->last_blink_time
= jiffies
;
179 * brightness call back for association and radio
181 static void iwl3945_led_brightness_set(struct led_classdev
*led_cdev
,
182 enum led_brightness brightness
)
184 struct iwl3945_led
*led
= container_of(led_cdev
,
185 struct iwl3945_led
, led_dev
);
186 struct iwl3945_priv
*priv
= led
->priv
;
188 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
191 switch (brightness
) {
193 if (led
->type
== IWL_LED_TRG_ASSOC
) {
194 priv
->allow_blinking
= 1;
195 IWL_DEBUG_LED("MAC is associated\n");
198 led
->led_on(priv
, IWL_LED_LINK
);
201 if (led
->type
== IWL_LED_TRG_ASSOC
) {
202 priv
->allow_blinking
= 0;
203 IWL_DEBUG_LED("MAC is disassociated\n");
206 led
->led_off(priv
, IWL_LED_LINK
);
209 if (led
->led_pattern
)
210 led
->led_pattern(priv
, IWL_LED_LINK
, brightness
);
218 * Register led class with the system
220 static int iwl3945_led_register_led(struct iwl3945_priv
*priv
,
221 struct iwl3945_led
*led
,
222 enum led_type type
, u8 set_led
,
223 const char *name
, char *trigger
)
225 struct device
*device
= wiphy_dev(priv
->hw
->wiphy
);
228 led
->led_dev
.name
= name
;
229 led
->led_dev
.brightness_set
= iwl3945_led_brightness_set
;
230 led
->led_dev
.default_trigger
= trigger
;
235 ret
= led_classdev_register(device
, &led
->led_dev
);
237 IWL_ERROR("Error: failed to register led handler.\n");
243 if (set_led
&& led
->led_on
)
244 led
->led_on(priv
, IWL_LED_LINK
);
250 * calculate blink rate according to last 2 sec Tx/Rx activities
252 static inline u8
get_blink_rate(struct iwl3945_priv
*priv
)
257 if (priv
->rxtxpackets
< IWL_LED_THRESHOLD
)
260 for (index
= 0; index
< IWL_MAX_BLINK_TBL
; index
++) {
261 if (priv
->rxtxpackets
> (blink_tbl
[index
].brightness
*
266 /* if 0 frame is transfered */
267 if ((index
== IWL_MAX_BLINK_TBL
) || !priv
->allow_blinking
)
268 blink_rate
= IWL_LED_SOLID
;
270 blink_rate
= blink_tbl
[index
].on_time
;
275 static inline int is_rf_kill(struct iwl3945_priv
*priv
)
277 return test_bit(STATUS_RF_KILL_HW
, &priv
->status
) ||
278 test_bit(STATUS_RF_KILL_SW
, &priv
->status
);
282 * this function called from handler. Since setting Led command can
283 * happen very frequent we postpone led command to be called from
284 * REPLY handler so we know ucode is up
286 void iwl3945_led_background(struct iwl3945_priv
*priv
)
290 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
291 priv
->last_blink_time
= 0;
294 if (is_rf_kill(priv
)) {
295 priv
->last_blink_time
= 0;
299 if (!priv
->allow_blinking
) {
300 priv
->last_blink_time
= 0;
301 if (priv
->last_blink_rate
!= IWL_LED_SOLID
) {
302 priv
->last_blink_rate
= IWL_LED_SOLID
;
303 iwl3945_led_on(priv
, IWL_LED_LINK
);
307 if (!priv
->last_blink_time
||
308 !time_after(jiffies
, priv
->last_blink_time
+
309 msecs_to_jiffies(1000)))
312 blink_rate
= get_blink_rate(priv
);
314 /* call only if blink rate change */
315 if (blink_rate
!= priv
->last_blink_rate
) {
316 if (blink_rate
!= IWL_LED_SOLID
) {
317 priv
->last_blink_time
= jiffies
+
318 msecs_to_jiffies(1000);
319 iwl3945_led_not_solid(priv
, IWL_LED_LINK
, blink_rate
);
321 priv
->last_blink_time
= 0;
322 iwl3945_led_on(priv
, IWL_LED_LINK
);
326 priv
->last_blink_rate
= blink_rate
;
327 priv
->rxtxpackets
= 0;
331 /* Register all led handler */
332 int iwl3945_led_register(struct iwl3945_priv
*priv
)
338 priv
->last_blink_rate
= 0;
339 priv
->rxtxpackets
= 0;
340 priv
->last_blink_time
= 0;
341 priv
->allow_blinking
= 0;
343 trigger
= ieee80211_get_radio_led_name(priv
->hw
);
344 snprintf(name
, sizeof(name
), "iwl-%s:radio",
345 wiphy_name(priv
->hw
->wiphy
));
347 priv
->led
[IWL_LED_TRG_RADIO
].led_on
= iwl3945_led_on_reg
;
348 priv
->led
[IWL_LED_TRG_RADIO
].led_off
= iwl3945_led_off_reg
;
349 priv
->led
[IWL_LED_TRG_RADIO
].led_pattern
= NULL
;
351 ret
= iwl3945_led_register_led(priv
,
352 &priv
->led
[IWL_LED_TRG_RADIO
],
353 IWL_LED_TRG_RADIO
, 1,
358 trigger
= ieee80211_get_assoc_led_name(priv
->hw
);
359 snprintf(name
, sizeof(name
), "iwl-%s:assoc",
360 wiphy_name(priv
->hw
->wiphy
));
362 ret
= iwl3945_led_register_led(priv
,
363 &priv
->led
[IWL_LED_TRG_ASSOC
],
364 IWL_LED_TRG_ASSOC
, 0,
366 /* for assoc always turn led on */
367 priv
->led
[IWL_LED_TRG_ASSOC
].led_on
= iwl3945_led_on_reg
;
368 priv
->led
[IWL_LED_TRG_ASSOC
].led_off
= iwl3945_led_on_reg
;
369 priv
->led
[IWL_LED_TRG_ASSOC
].led_pattern
= NULL
;
374 trigger
= ieee80211_get_rx_led_name(priv
->hw
);
375 snprintf(name
, sizeof(name
), "iwl-%s:RX",
376 wiphy_name(priv
->hw
->wiphy
));
379 ret
= iwl3945_led_register_led(priv
,
380 &priv
->led
[IWL_LED_TRG_RX
],
384 priv
->led
[IWL_LED_TRG_RX
].led_on
= iwl3945_led_associated
;
385 priv
->led
[IWL_LED_TRG_RX
].led_off
= iwl3945_led_associated
;
386 priv
->led
[IWL_LED_TRG_RX
].led_pattern
= iwl3945_led_pattern
;
391 trigger
= ieee80211_get_tx_led_name(priv
->hw
);
392 snprintf(name
, sizeof(name
), "iwl-%s:TX",
393 wiphy_name(priv
->hw
->wiphy
));
394 ret
= iwl3945_led_register_led(priv
,
395 &priv
->led
[IWL_LED_TRG_TX
],
398 priv
->led
[IWL_LED_TRG_TX
].led_on
= iwl3945_led_associated
;
399 priv
->led
[IWL_LED_TRG_TX
].led_off
= iwl3945_led_associated
;
400 priv
->led
[IWL_LED_TRG_TX
].led_pattern
= iwl3945_led_pattern
;
408 iwl3945_led_unregister(priv
);
413 /* unregister led class */
414 static void iwl3945_led_unregister_led(struct iwl3945_led
*led
, u8 set_led
)
416 if (!led
->registered
)
419 led_classdev_unregister(&led
->led_dev
);
422 led
->led_dev
.brightness_set(&led
->led_dev
, LED_OFF
);
426 /* Unregister all led handlers */
427 void iwl3945_led_unregister(struct iwl3945_priv
*priv
)
429 iwl3945_led_unregister_led(&priv
->led
[IWL_LED_TRG_ASSOC
], 0);
430 iwl3945_led_unregister_led(&priv
->led
[IWL_LED_TRG_RX
], 0);
431 iwl3945_led_unregister_led(&priv
->led
[IWL_LED_TRG_TX
], 0);
432 iwl3945_led_unregister_led(&priv
->led
[IWL_LED_TRG_RADIO
], 1);