| bc6b8275924b8af3d10ac35df0579d94fa169680 |
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13-Sep-2014 |
Christophe Ricard <christophe.ricard@gmail.com> |
NFC: st21nfcb: remove error output
In case we are not able to read out the NDLC/NCI header, we do not
consider this as an issue and we will give a later chance.
The NDLC layer will handle errors thanks to its internal timers.
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
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| 4294e32040b5142824f420d4a3ae604b92f1d1b5 |
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13-Sep-2014 |
Christophe Ricard <christophe.ricard@gmail.com> |
NFC: st21nfcb: Fix improper management of -EREMOTEIO error code.
On st21nfcb the irq line might be kept to active state because of other
interfaces activity. This may generate i2c read tentative resulting in
i2c NACK.
This fix will currently let NDLC upper layer to decide when it is relevent
to signal to the physical layer when the chip as muted.
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
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| 890c165261f92e23005d84762acc98892acaa504 |
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03-Sep-2014 |
Christophe Ricard <christophe.ricard@gmail.com> |
NFC: st21nfcb: Remove useless headers
Remove some headers as they are:
- not relevent for st21nfcb.
- called multiple times for no reason: example st21nfcb.h already include
ndlc.h.
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
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| ac633ba6acb94a11b09a7ec417c72f65c6308b7a |
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03-Sep-2014 |
Christophe Ricard <christophe.ricard@gmail.com> |
NFC: st21nfcb: Fix logic when running into i2c read retry
When retrying to read the NCI header, the CLF might not be
available the first time. However it may not be successful
the second time and this may cause an error in the function.
Enforce the retrieve data length is as expected.
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
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| 2c376a9e3c973e7923daba78aa16c768503cdef3 |
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28-Jul-2014 |
Christophe Ricard <christophe.ricard@gmail.com> |
NFC: st21nfcb: Remove useless new line in nfc_err call
Remove a uselss new line in nfc_err call.
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
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| d363d7d0a5755b347de42c28aeab23ecfdcd2348 |
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28-Jul-2014 |
Christophe Ricard <christophe.ricard@gmail.com> |
NFC: st21nfcb: Remove double assignment of .owner in struct device_driver
The .owner member of struct device_driver is assigned THIS_MODULE twice.
Introduced by:
commit 35630df68d6030daf12dde12ed07bbe26324e6ac
NFC: st21nfcb: Add driver for STMicroelectronics ST21NFCB NFC chip
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
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| 56ee645e304c9b86b48768de8e52babd5b6e1d8a |
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28-Jul-2014 |
Christophe Ricard <christophe.ricard@gmail.com> |
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>
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| 361325e21d3a06a31ab53baf452c0946743b7abb |
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28-Jul-2014 |
Christophe Ricard <christophe.ricard@gmail.com> |
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>
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| fb92ff78f85b6c1a6f1277f7dd04a3762ba725ef |
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25-May-2014 |
Christophe Ricard <christophe.ricard@gmail.com> |
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>
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| 35630df68d6030daf12dde12ed07bbe26324e6ac |
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25-May-2014 |
Christophe Ricard <christophe.ricard@gmail.com> |
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>
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