[PATCH v5 00/17] net: qualcomm: add QCA7000 UART driver

Stefan Wahren
2017-05-10T08:53:11Z

The Qualcomm QCA7000 HomePlug GreenPHY supports two interfaces:
UART and SPI. This patch series adds the missing support for UART.

This driver based on the Qualcomm code [1], but contains some changes:
* use random MAC address per default
* use net_device_stats from device
* share frame decoding between SPI and UART driver
* improve error handling
* reimplement tty_wakeup with work queue (based on slcan)
* use new serial device bus instead of ldisc

The patches 1 - 3 are just for clean up and are not related to
the UART support. Patches 4 - 15 prepare the existing QCA7000
code for UART support. Patch 16 is a improvement for serial device
bus. Patch 17 contains the new driver.

Cherry picking of the dt-bindings and serdev patch is okay. The
UART driver functionally (not compile) depends on this unmerged
patch [2].

The code itself has been tested on a Freescale i.MX28 board and
a Raspberry Pi Zero.

Changes in v5:
* rebase to current linux-next
* fix alignment issues in rx path
* fix buffer overrun with big ethernet frames
* fix init of UART decoding fsm
* add device UART settings to Kconfig help
* add current-speed to slave-device binding
* merge SPI and UART binding document
* rename qca_common to qca_7k_common
* drop patch for retrieving UART settings
* several cleanups

Changes in v4:
* rebase to current linux-next
* use parameter -M for git format-patch
* change order of local variables where possible
* implement basic serdev support (without hardware flow control)

Changes in v3:
* rebase to current net-next

Changes in v2:
* fix build issue by using netif_trans_update() and dev_trans_start()

[1] - https://github.com/IoE/qca7000
[2] - http://marc.info/?l=linux-serial&m=149338017301309&w=2

Stefan Wahren (17):
net: qualcomm: remove unnecessary includes
net: qca_framing: use u16 for frame offset
net: qca_7k: Use BIT macro
net: qualcomm: use net_device_ops instead of direct call
net: qualcomm: Improve readability of length defines
net: qca_spi: remove QCASPI_MTU
net: qualcomm: move qcaspi_tx_cmd to qca_spi.c
net: qca_spi: Clarify MODULE_DESCRIPTION
net: qualcomm: rename qca_framing.c to qca_7k_common.c
net: qualcomm: prepare frame decoding for UART driver
net: qualcomm: make qca_7k_common a separate kernel module
dt-bindings: qca7000-spi: Rework binding
dt-bindings: qca7000: rename binding
dt-bindings: slave-device: add current-speed property
dt-bindings: qca7000: append UART interface to binding
tty: serdev-ttyport: return actual baudrate from ttyport_set_baudrate
net: qualcomm: add QCA7000 UART driver

.../devicetree/bindings/net/qca-qca7000-spi.txt | 47 ---
.../devicetree/bindings/net/qca-qca7000.txt | 88 +++++
.../devicetree/bindings/serial/slave-device.txt | 9 +
drivers/net/ethernet/qualcomm/Kconfig | 24 +-
drivers/net/ethernet/qualcomm/Makefile | 7 +-
drivers/net/ethernet/qualcomm/qca_7k.c | 28 --
drivers/net/ethernet/qualcomm/qca_7k.h | 15 +-
.../qualcomm/{qca_framing.c => qca_7k_common.c} | 26 +-
.../qualcomm/{qca_framing.h => qca_7k_common.h} | 24 +-
drivers/net/ethernet/qualcomm/qca_debug.c | 5 +-
drivers/net/ethernet/qualcomm/qca_spi.c | 47 ++-
drivers/net/ethernet/qualcomm/qca_spi.h | 5 +-
drivers/net/ethernet/qualcomm/qca_uart.c | 423 +++++++++++++++++++++
drivers/tty/serdev/serdev-ttyport.c | 2 +-
14 files changed, 630 insertions(+), 120 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/net/qca-qca7000-spi.txt
create mode 100644 Documentation/devicetree/bindings/net/qca-qca7000.txt
rename drivers/net/ethernet/qualcomm/{qca_framing.c => qca_7k_common.c} (85%)
rename drivers/net/ethernet/qualcomm/{qca_framing.h => qca_7k_common.h} (86%)
create mode 100644 drivers/net/ethernet/qualcomm/qca_uart.c

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2.1.4