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Commit a440f1aa authored by Saurabh Sengar's avatar Saurabh Sengar Committed by Samuel Ortiz
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NFC: add rx delay sysfs parameter for nfcsim workqueue 



added the rx delay parameter as a device tunable parameter.

Signed-off-by: default avatarSaurabh Sengar <saurabh.truth@gmail.com>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent c6b5df0d

drivers/nfc/nfcsim.c

+7 −3
Original line number Original line Diff line number Diff line
@@ -32,6 +32,8 @@ 
#define NFCSIM_POLL_TARGET	2

#define NFCSIM_POLL_TARGET	2

#define NFCSIM_POLL_DUAL	(NFCSIM_POLL_INITIATOR | NFCSIM_POLL_TARGET)

#define NFCSIM_POLL_DUAL	(NFCSIM_POLL_INITIATOR | NFCSIM_POLL_TARGET)





#define RX_DEFAULT_DELAY	5



struct nfcsim {

struct nfcsim {

	struct nfc_dev *nfc_dev;

	struct nfc_dev *nfc_dev;
@@ -51,6 +53,8 @@ struct nfcsim { 




	u8 initiator;

	u8 initiator;





	u32 rx_delay;



	data_exchange_cb_t cb;

	data_exchange_cb_t cb;

	void *cb_context;

	void *cb_context;
@@ -320,10 +324,9 @@ static int nfcsim_tx(struct nfc_dev *nfc_dev, struct nfc_target *target, 
	 * If packet transmission occurs immediately between them, we have a

	 * If packet transmission occurs immediately between them, we have a

	 * non-stop flow of several tens of thousands SYMM packets per second

	 * non-stop flow of several tens of thousands SYMM packets per second

	 * and a burning cpu.

	 * and a burning cpu.

	 *

	 * TODO: Add support for a sysfs entry to control this delay.

	 */

	 */

	queue_delayed_work(wq, &peer->recv_work, msecs_to_jiffies(5));

	queue_delayed_work(wq, &peer->recv_work,

			msecs_to_jiffies(dev->rx_delay));





	mutex_unlock(&peer->lock);

	mutex_unlock(&peer->lock);
@@ -461,6 +464,7 @@ static struct nfcsim *nfcsim_init_dev(void) 
	if (rc)

	if (rc)

		goto free_nfc_dev;

		goto free_nfc_dev;





	dev->rx_delay = RX_DEFAULT_DELAY;

	return dev;

	return dev;





free_nfc_dev:

free_nfc_dev: