4 Commits

Author	SHA1	Message	Date
Christophe Ricard	56ee645e30	NFC: st21nfcb: Convert to use devm_gpio_request_one ... Simplify the code a bit as mention by Axel Lin in a previous patch for st21nfca. Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>	2014-09-07 23:56:47 +02:00
Christophe Ricard	361325e21d	NFC: st21nfcb: Fix scripts/checkpatch.pl error "code indent should use tabs where possible" ... Fixing scripts/checkpatch.pl error "code indent should use tabs where possible" in: - i2c.c in st21nfcb_nci_irq_thread_fn function. Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>	2014-09-07 23:56:47 +02:00
Christophe Ricard	fb92ff78f8	NFC: st21nfcb: few code clean up ... Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>	2014-07-23 00:49:37 +02:00
Christophe Ricard	35630df68d	NFC: st21nfcb: Add driver for STMicroelectronics ST21NFCB NFC chip ... Add driver for STMicroelectronics ST21NFCB NFC controller. ST21NFCB is using NCI protocol and a proprietary low level transport protocol called NDLC used on top. NDLC: The protocol defines 2 types of frame: - One type carrying NCI data (referred as DATAFRAME frames). - One type carrying protocol information used for flow control and error control mechanisms (referred as SUPERVISOR frames). After each frame transmission to the NFC controller, the device host SHALL waitfor an ACK (SUPERVISOR frame) reception before sending a new frame. The NFC controller MAY send a frame at anytime to the device host. The NFC controller MAY send a specific WAIT supervisor frame to indicate to device host that a NCI data packet has been received but that it could take significant time before the NFC controller sends an ACK and thus allows next data reception. Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>	2014-07-23 00:49:28 +02:00