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NFC: add rx delay sysfs parameter for nfcsim workqueue

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added the rx delay parameter as a device tunable parameter.

Signed-off-by: Saurabh Sengar <saurabh.truth@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Saurabh Sengar 2015-12-21 00:29:30 +05:30 committed by Samuel Ortiz
parent c6b5df0daf
commit a440f1aa74
1 changed files with 7 additions and 3 deletions
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10
drivers/nfc/nfcsim.c
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@ -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: