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media: cec: move cec autorepeat handling to rc-core

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CEC autorepeat is different than other protocols. Autorepeat is triggered
by the first repeated user control pressed CEC message, rather than a
fixed REP_DELAY.

This change also does away with the KEY_UP event directly after the first
KEY_DOWN event, which was used to stop autorepeat from starting.

See commit a9a249a2c9 ("media: cec: fix remote control passthrough")
for the original change.

Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Sean Young 2017-11-23 17:37:10 -05:00 committed by Mauro Carvalho Chehab
parent 6d4a36d183
commit 57c642cb45
5 changed files with 56 additions and 69 deletions
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56
drivers/media/cec/cec-adap.c
View file

@ -1788,9 +1788,6 @@ static int cec_receive_notify(struct cec_adapter *adap, struct cec_msg *msg,
int la_idx = cec_log_addr2idx(adap, dest_laddr);
bool from_unregistered = init_laddr == 0xf;
struct cec_msg tx_cec_msg = { };
#ifdef CONFIG_MEDIA_CEC_RC
int scancode;
#endif
dprintk(2, "%s: %*ph\n", __func__, msg->len, msg->msg);
@ -1886,9 +1883,11 @@ static int cec_receive_notify(struct cec_adapter *adap, struct cec_msg *msg,
*/
case 0x60:
if (msg->len == 2)
scancode = msg->msg[2];
rc_keydown(adap->rc, RC_PROTO_CEC,
msg->msg[2], 0);
else
scancode = msg->msg[2] << 8 | msg->msg[3];
rc_keydown(adap->rc, RC_PROTO_CEC,
msg->msg[2] << 8 | msg->msg[3], 0);
break;
/*
* Other function messages that are not handled.
@ -1901,54 +1900,11 @@ static int cec_receive_notify(struct cec_adapter *adap, struct cec_msg *msg,
*/
case 0x56: case 0x57:
case 0x67: case 0x68: case 0x69: case 0x6a:
scancode = -1;
break;
default:
scancode = msg->msg[2];
rc_keydown(adap->rc, RC_PROTO_CEC, msg->msg[2], 0);
break;
}
/* Was repeating, but keypress timed out */
if (adap->rc_repeating && !adap->rc->keypressed) {
adap->rc_repeating = false;
adap->rc_last_scancode = -1;
}
/* Different keypress from last time, ends repeat mode */
if (adap->rc_last_scancode != scancode) {
rc_keyup(adap->rc);
adap->rc_repeating = false;
}
/* We can't handle this scancode */
if (scancode < 0) {
adap->rc_last_scancode = scancode;
break;
}
/* Send key press */
rc_keydown(adap->rc, RC_PROTO_CEC, scancode, 0);
/* When in repeating mode, we're done */
if (adap->rc_repeating)
break;
/*
* We are not repeating, but the new scancode is
* the same as the last one, and this second key press is
* within 550 ms (the 'Follower Safety Timeout') from the
* previous key press, so we now enable the repeating mode.
*/
if (adap->rc_last_scancode == scancode &&
msg->rx_ts - adap->rc_last_keypress < 550 * NSEC_PER_MSEC) {
adap->rc_repeating = true;
break;
}
/*
* Not in repeating mode, so avoid triggering repeat mode
* by calling keyup.
*/
rc_keyup(adap->rc);
adap->rc_last_scancode = scancode;
adap->rc_last_keypress = msg->rx_ts;
#endif
break;
@ -1958,8 +1914,6 @@ static int cec_receive_notify(struct cec_adapter *adap, struct cec_msg *msg,
break;
#ifdef CONFIG_MEDIA_CEC_RC
rc_keyup(adap->rc);
adap->rc_repeating = false;
adap->rc_last_scancode = -1;
#endif
break;

12
drivers/media/cec/cec-core.c
View file

@ -286,7 +286,6 @@ struct cec_adapter *cec_allocate_adapter(const struct cec_adap_ops *ops,
adap->rc->priv = adap;
adap->rc->map_name = RC_MAP_CEC;
adap->rc->timeout = MS_TO_NS(100);
adap->rc_last_scancode = -1;
#endif
return adap;
}
@ -318,17 +317,6 @@ int cec_register_adapter(struct cec_adapter *adap,
adap->rc = NULL;
return res;
}
/*
* The REP_DELAY for CEC is really the time between the initial
* 'User Control Pressed' message and the second. The first
* keypress is always seen as non-repeating, the second
* (provided it has the same UI Command) will start the 'Press
* and Hold' (aka repeat) behavior. By setting REP_DELAY to the
* same value as REP_PERIOD the expected CEC behavior is
* reproduced.
*/
adap->rc->input_dev->rep[REP_DELAY] =
adap->rc->input_dev->rep[REP_PERIOD];
}
#endif

49
drivers/media/rc/rc-main.c
View file

@ -597,6 +597,7 @@ static void ir_do_keyup(struct rc_dev *dev, bool sync)
return;
IR_dprintk(1, "keyup key 0x%04x\n", dev->last_keycode);
del_timer_sync(&dev->timer_repeat);
input_report_key(dev->input_dev, dev->last_keycode, 0);
led_trigger_event(led_feedback, LED_OFF);
if (sync)
@ -650,6 +651,31 @@ static void ir_timer_keyup(struct timer_list *t)
spin_unlock_irqrestore(&dev->keylock, flags);
}
/**
* ir_timer_repeat() - generates a repeat event after a timeout
*
* @t: a pointer to the struct timer_list
*
* This routine will generate a soft repeat event every REP_PERIOD
* milliseconds.
*/
static void ir_timer_repeat(struct timer_list *t)
{
struct rc_dev *dev = from_timer(dev, t, timer_repeat);
struct input_dev *input = dev->input_dev;
unsigned long flags;
spin_lock_irqsave(&dev->keylock, flags);
if (dev->keypressed) {
input_event(input, EV_KEY, dev->last_keycode, 2);
input_sync(input);
if (input->rep[REP_PERIOD])
mod_timer(&dev->timer_repeat, jiffies +
msecs_to_jiffies(input->rep[REP_PERIOD]));
}
spin_unlock_irqrestore(&dev->keylock, flags);
}
/**
* rc_repeat() - signals that a key is still pressed
* @dev: the struct rc_dev descriptor of the device
@ -732,6 +758,22 @@ static void ir_do_keydown(struct rc_dev *dev, enum rc_proto protocol,
led_trigger_event(led_feedback, LED_FULL);
}
/*
* For CEC, start sending repeat messages as soon as the first
* repeated message is sent, as long as REP_DELAY = 0 and REP_PERIOD
* is non-zero. Otherwise, the input layer will generate repeat
* messages.
*/
if (!new_event && keycode != KEY_RESERVED &&
dev->allowed_protocols == RC_PROTO_BIT_CEC &&
!timer_pending(&dev->timer_repeat) &&
dev->input_dev->rep[REP_PERIOD] &&
!dev->input_dev->rep[REP_DELAY]) {
input_event(dev->input_dev, EV_KEY, keycode, 2);
mod_timer(&dev->timer_repeat, jiffies +
msecs_to_jiffies(dev->input_dev->rep[REP_PERIOD]));
}
input_sync(dev->input_dev);
}
@ -1599,6 +1641,7 @@ struct rc_dev *rc_allocate_device(enum rc_driver_type type)
input_set_drvdata(dev->input_dev, dev);
timer_setup(&dev->timer_keyup, ir_timer_keyup, 0);
timer_setup(&dev->timer_repeat, ir_timer_repeat, 0);
spin_lock_init(&dev->rc_map.lock);
spin_lock_init(&dev->keylock);
@ -1732,7 +1775,10 @@ static int rc_setup_rx_device(struct rc_dev *dev)
* to avoid wrong repetition of the keycodes. Note that this must be
* set after the call to input_register_device().
*/
dev->input_dev->rep[REP_DELAY] = 500;
if (dev->allowed_protocols == RC_PROTO_BIT_CEC)
dev->input_dev->rep[REP_DELAY] = 0;
else
dev->input_dev->rep[REP_DELAY] = 500;
/*
* As a repeat event on protocols like RC-5 and NEC take as long as
@ -1884,6 +1930,7 @@ void rc_unregister_device(struct rc_dev *dev)
return;
del_timer_sync(&dev->timer_keyup);
del_timer_sync(&dev->timer_repeat);
if (dev->driver_type == RC_DRIVER_IR_RAW)
ir_raw_event_unregister(dev);

5
include/media/cec.h
View file

@ -192,11 +192,6 @@ struct cec_adapter {
u32 tx_timeouts;
#ifdef CONFIG_MEDIA_CEC_RC
bool rc_repeating;
int rc_last_scancode;
u64 rc_last_keypress;
#endif
#ifdef CONFIG_CEC_NOTIFIER
struct cec_notifier *notifier;
#endif

3
include/media/rc-core.h
View file

@ -134,6 +134,8 @@ struct lirc_fh {
* @keypressed: whether a key is currently pressed
* @keyup_jiffies: time (in jiffies) when the current keypress should be released
* @timer_keyup: timer for releasing a keypress
* @timer_repeat: timer for autorepeat events. This is needed for CEC, which
* has non-standard repeats.
* @last_keycode: keycode of last keypress
* @last_protocol: protocol of last keypress
* @last_scancode: scancode of last keypress
@ -202,6 +204,7 @@ struct rc_dev {
bool keypressed;
unsigned long keyup_jiffies;
struct timer_list timer_keyup;
struct timer_list timer_repeat;
u32 last_keycode;
enum rc_proto last_protocol;
u32 last_scancode;