linux-toradex.git/drivers/tty/serial/ucc_uart.c, branch v5.15-rc3

firmware: replace HOTPLUG with UEVENT in FW_ACTION defines

2021-05-13T14:14:45+00:00

With commit 312c004d36ce ("[PATCH] driver core: replace "hotplug" by
"uevent"") already in the tree over a decade, update the name of
FW_ACTION defines to follow semantics, and reflect what the defines are
really meant for, i.e. whether or not generate user space event.

Acked-by: Lee Jones 
Signed-off-by: Shawn Guo 
Link: https://lore.kernel.org/r/20210425020024.28057-1-shawn.guo@linaro.org
Signed-off-by: Greg Kroah-Hartman

tty: serial: ucc_uart: replace qe_io{read,write}* wrappers by generic io{read,write}*

2021-04-06T20:40:42+00:00

Commit 6ac9b61786cc ("soc: fsl: qe: introduce qe_io{read,write}*
wrappers") added specific I/O accessors for qe because at that
time ioread/iowrite functions were sub-optimal on powerpc/32
compared to the architecture specific in_/out_ IO accessors.

But as ioread/iowrite accessors are now equivalent since
commit 894fa235eb4c ("powerpc: inline iomap accessors"),
use them in order to allow removal of the qe specific ones.

Signed-off-by: Christophe Leroy 
Acked-by: Greg Kroah-Hartman 
Signed-off-by: Li Yang

serial: ucc_uart: make qe_uart_set_mctrl() static

2020-09-16T11:14:58+00:00

This eliminates the following sparse warning:

drivers/tty/serial/ucc_uart.c:286:6: warning: symbol 'qe_uart_set_mctrl'
was not declared. Should it be static?

Reported-by: Hulk Robot 
Acked-by: Jiri Slaby 
Signed-off-by: Jason Yan 
Link: https://lore.kernel.org/r/20200912033834.143166-1-yanaijie@huawei.com
Signed-off-by: Greg Kroah-Hartman

Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

2020-02-08T22:04:19+00:00

Pull ARM SoC-related driver updates from Olof Johansson:
 "Various driver updates for platforms:

   - Nvidia: Fuse support for Tegra194, continued memory controller
     pieces for Tegra30

   - NXP/FSL: Refactorings of QuickEngine drivers to support
     ARM/ARM64/PPC

   - NXP/FSL: i.MX8MP SoC driver pieces

   - TI Keystone: ring accelerator driver

   - Qualcomm: SCM driver cleanup/refactoring + support for new SoCs.

   - Xilinx ZynqMP: feature checking interface for firmware. Mailbox
     communication for power management

   - Overall support patch set for cpuidle on more complex hierarchies
     (PSCI-based)

  and misc cleanups, refactorings of Marvell, TI, other platforms"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (166 commits)
  drivers: soc: xilinx: Use mailbox IPI callback
  dt-bindings: power: reset: xilinx: Add bindings for ipi mailbox
  drivers: soc: ti: knav_qmss_queue: Pass lockdep expression to RCU lists
  MAINTAINERS: Add brcmstb PCIe controller entry
  soc/tegra: fuse: Unmap registers once they are not needed anymore
  soc/tegra: fuse: Correct straps' address for older Tegra124 device trees
  soc/tegra: fuse: Warn if straps are not ready
  soc/tegra: fuse: Cache values of straps and Chip ID registers
  memory: tegra30-emc: Correct error message for timed out auto calibration
  memory: tegra30-emc: Firm up hardware programming sequence
  memory: tegra30-emc: Firm up suspend/resume sequence
  soc/tegra: regulators: Do nothing if voltage is unchanged
  memory: tegra: Correct reset value of xusb_hostr
  soc/tegra: fuse: Add APB DMA dependency for Tegra20
  bus: tegra-aconnect: Remove PM_CLK dependency
  dt-bindings: mediatek: add MT6765 power dt-bindings
  soc: mediatek: cmdq: delete not used define
  memory: tegra: Add support for the Tegra194 memory controller
  memory: tegra: Only include support for enabled SoCs
  memory: tegra: Support DVFS on Tegra186 and later
  ...

serial: ucc_uart: remove redundant assignment to pointer bdp

2020-01-06T19:22:32+00:00

The variable bdp is being initialized with a value that is never
read and it is being updated later with a new value. The initialization
is redundant and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King 
Acked-by: Timur Tabi 
Link: https://lore.kernel.org/r/20191220001000.39859-1-colin.king@canonical.com
Signed-off-by: Greg Kroah-Hartman

tty/serial: ucc_uart: Remove ifdef SUPPORT_SYSRQ

2019-12-18T14:05:08+00:00

ucc_uart doesn't seem to support console over itself, so maybe it can
be deleted with uart_handle_sysrq_char() from the file.

Cc: Timur Tabi 
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Dmitry Safonov 
Link: https://lore.kernel.org/r/20191213000657.931618-50-dima@arista.com
Signed-off-by: Greg Kroah-Hartman

serial: ucc_uart: access __be32 field using be32_to_cpu

2019-12-09T19:54:35+00:00

The buf member of struct qe_bd is a __be32, so to make this work on
little-endian hosts, use be32_to_cpu when reading it.

Reviewed-by: Timur Tabi 
Acked-by: Timur Tabi 
Signed-off-by: Rasmus Villemoes 
Signed-off-by: Li Yang

serial: ucc_uart: limit brg-frequency workaround to PPC32

2019-12-09T19:54:35+00:00

According to Timur Tabi

    This bug in older U-Boots is definitely PowerPC-specific

So before allowing this driver to be built for platforms other than
PPC32, make sure that we don't accept malformed device trees on those
other platforms.

Suggested-by: Timur Tabi 
Reviewed-by: Timur Tabi 
Acked-by: Timur Tabi 
Signed-off-by: Rasmus Villemoes 
Signed-off-by: Li Yang

serial: ucc_uart: use of_property_read_u32() in ucc_uart_probe()

2019-12-09T19:54:35+00:00

For this to work correctly on little-endian hosts, don't access the
device-tree properties directly in native endianness, but use the
of_property_read_u32() helper.

Reviewed-by: Timur Tabi 
Acked-by: Timur Tabi 
Signed-off-by: Rasmus Villemoes 
Signed-off-by: Li Yang

serial: ucc_uart: stub out soft_uart_init for !CONFIG_PPC32

2019-12-09T19:54:35+00:00

The Soft UART hack is only needed for some PPC-based SOCs. To allow
building this driver for non-PPC, guard soft_uart_init() and its
helpers by CONFIG_PPC32, and use a no-op soft_uart_init() otherwise.

Reviewed-by: Timur Tabi 
Acked-by: Timur Tabi 
Signed-off-by: Rasmus Villemoes 
Signed-off-by: Li Yang