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| author | Samuel Ortiz <sameo@linux.intel.com> | 2012-05-29 21:34:08 +0200 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2012-06-04 21:34:32 +0200 |
| commit | 34a85bfcfb84fe673833290ee071de0a10dd1cac (patch) | |
| tree | df9ea2214670c454e21154b199010febc9e561f5 | |
| parent | 9f2f8ba172d9a7f7f600ced18b05f6fd52b83396 (diff) | |
| download | linux-34a85bfcfb84fe673833290ee071de0a10dd1cac.tar.gz linux-34a85bfcfb84fe673833290ee071de0a10dd1cac.tar.bz2 linux-34a85bfcfb84fe673833290ee071de0a10dd1cac.zip | |
NFC: Configure pn533 RF timings
Those define the ATR_RES response timeout after which the pn533 considers the
target to be mute.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
| -rw-r--r-- | drivers/nfc/pn533.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/nfc/pn533.c b/drivers/nfc/pn533.c index 2a7e4e8e4f11..d9763440b8e9 100644 --- a/drivers/nfc/pn533.c +++ b/drivers/nfc/pn533.c @@ -104,8 +104,14 @@ struct pn533_fw_version { }; /* PN533_CMD_RF_CONFIGURATION */ +#define PN533_CFGITEM_TIMING 0x02 #define PN533_CFGITEM_MAX_RETRIES 0x05 +#define PN533_CONFIG_TIMING_102 0xb +#define PN533_CONFIG_TIMING_204 0xc +#define PN533_CONFIG_TIMING_409 0xd +#define PN533_CONFIG_TIMING_819 0xe + #define PN533_CONFIG_MAX_RETRIES_NO_RETRY 0x00 #define PN533_CONFIG_MAX_RETRIES_ENDLESS 0xFF @@ -115,6 +121,12 @@ struct pn533_config_max_retries { u8 mx_rty_passive_act; } __packed; +struct pn533_config_timing { + u8 rfu; + u8 atr_res_timeout; + u8 dep_timeout; +} __packed; + /* PN533_CMD_IN_LIST_PASSIVE_TARGET */ /* felica commands opcode */ @@ -2004,6 +2016,7 @@ static int pn533_probe(struct usb_interface *interface, struct usb_host_interface *iface_desc; struct usb_endpoint_descriptor *endpoint; struct pn533_config_max_retries max_retries; + struct pn533_config_timing timing; int in_endpoint = 0; int out_endpoint = 0; int rc = -ENOMEM; @@ -2115,6 +2128,18 @@ static int pn533_probe(struct usb_interface *interface, goto unregister_nfc_dev; } + timing.rfu = PN533_CONFIG_TIMING_102; + timing.atr_res_timeout = PN533_CONFIG_TIMING_204; + timing.dep_timeout = PN533_CONFIG_TIMING_409; + + rc = pn533_set_configuration(dev, PN533_CFGITEM_TIMING, + (u8 *) &timing, sizeof(timing)); + if (rc) { + nfc_dev_err(&dev->interface->dev, + "Error on setting RF timings"); + goto unregister_nfc_dev; + } + return 0; unregister_nfc_dev: |