Here is the "big" set of tty/serial driver updates for 6.12-rc1.
Nothing major in here, just nice forward progress in the slow cleanup of
the serial apis, and lots of other driver updates and fixes.
Included in here are:
- serial api updates from Jiri to make things more uniform and sane
- 8250_platform driver cleanups
- samsung serial driver fixes and updates
- qcom-geni serial driver fixes from Johan for the bizarre UART engine
that that chip seems to have. Hopefully it's in a better state now,
but hardware designers still seem to come up with more ways to make
broken UARTS 40+ years after this all should have finished.
- sc16is7xx driver updates
- omap 8250 driver updates
- 8250_bcm2835aux driver updates
- a few new serial driver bindings added
- other serial minor driver updates
All of these have been in linux-next for a long time with no reported
problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty / serial driver updates from Greg KH:
"Here is the "big" set of tty/serial driver updates for 6.12-rc1.
Nothing major in here, just nice forward progress in the slow cleanup
of the serial apis, and lots of other driver updates and fixes.
Included in here are:
- serial api updates from Jiri to make things more uniform and sane
- 8250_platform driver cleanups
- samsung serial driver fixes and updates
- qcom-geni serial driver fixes from Johan for the bizarre UART
engine that that chip seems to have. Hopefully it's in a better
state now, but hardware designers still seem to come up with more
ways to make broken UARTS 40+ years after this all should have
finished.
- sc16is7xx driver updates
- omap 8250 driver updates
- 8250_bcm2835aux driver updates
- a few new serial driver bindings added
- other serial minor driver updates
All of these have been in linux-next for a long time with no reported
problems"
* tag 'tty-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (65 commits)
tty: serial: samsung: Fix serial rx on Apple A7-A9
tty: serial: samsung: Fix A7-A11 serial earlycon SError
tty: serial: samsung: Use bit manipulation macros for APPLE_S5L_*
tty: rp2: Fix reset with non forgiving PCIe host bridges
serial: 8250_aspeed_vuart: Enable module autoloading
serial: qcom-geni: fix polled console corruption
serial: qcom-geni: disable interrupts during console writes
serial: qcom-geni: fix console corruption
serial: qcom-geni: introduce qcom_geni_serial_poll_bitfield()
serial: qcom-geni: fix arg types for qcom_geni_serial_poll_bit()
soc: qcom: geni-se: add GP_LENGTH/IRQ_EN_SET/IRQ_EN_CLEAR registers
serial: qcom-geni: fix false console tx restart
serial: qcom-geni: fix fifo polling timeout
tty: hvc: convert comma to semicolon
mxser: convert comma to semicolon
serial: 8250_bcm2835aux: Fix clock imbalance in PM resume
serial: sc16is7xx: convert bitmask definitions to use BIT() macro
serial: sc16is7xx: fix copy-paste errors in EFR_SWFLOWx_BIT constants
serial: sc16is7xx: remove SC16IS7XX_MSR_DELTA_MASK
serial: xilinx_uartps: Make cdns_rs485_supported static
...
Add MODULE_DEVICE_TABLE(), so modules could be properly autoloaded based
on the alias from of_device_id table.
Signed-off-by: Liao Chen <liaochen4@huawei.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Link: https://lore.kernel.org/r/20240903131503.961178-1-liaochen4@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Introduce uart_port_set_cons() as a wrapper to set @cons of a
uart_port. The wrapper sets @cons under the port lock in order
to prevent @cons from disappearing while another context is
holding the port lock. This is necessary for a follow-up
commit relating to the port lock wrappers, which rely on @cons
not changing between lock and unlock.
Signed-off-by: John Ogness <john.ogness@linutronix.de>
Tested-by: Théo Lebrun <theo.lebrun@bootlin.com> # EyeQ5, AMBA-PL011
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20240820063001.36405-12-john.ogness@linutronix.de
Signed-off-by: Petr Mladek <pmladek@suse.com>
This reverts commit 68e6939ea9.
Kevin reported that this causes a crash during suspend on platforms that
dont use PM domains.
Link: https://lore.kernel.org/r/7ha5hgpchq.fsf@baylibre.com
Cc: Thomas Richard <thomas.richard@bootlin.com>
Fixes: 68e6939ea9 ("serial: 8250_omap: Set the console genpd always on if no console suspend")
Cc: stable <stable@kernel.org>
Reported-by: Kevin Hilman <khilman@kernel.org>
Signed-off-by: Griffin Kroah-Hartman <griffin@kroah.com>
Link: https://lore.kernel.org/r/20240814111747.82371-1-griffin@kroah.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The definition of the PM operations opens code the existing macro,
replace it with the DEFINE_SIMPLE_DEV_PM_OPS() for setting the driver's
PM routines.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20240813081954.1408792-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Unify comment style and fix indentation in some cases.
While at it, add that it supports ACPI enumerated non-PNP devices.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20240812154901.1068407-8-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Make it clear that it supports two cases, pure platform device and ACPI.
With this in mind, split serial8250_probe() to two functions and rename
the ACPI case accordingly.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20240812154901.1068407-7-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tidy up ACPI ID table:
- remove explicit driver_data initializer
- drop comma in the terminator entry
- use C comment style
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20240812154901.1068407-5-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
UPF_IOREMAP is for serial core to map the resource on behalf of the
driver. No need to perform this explicitly in the driver.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20240812154901.1068407-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If the wakeup-source property is present, enable wakeup from this
device.
Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Tested-by: Kevin Hilman <khilman@baylibre.com>
Link: https://lore.kernel.org/r/20240807141227.1093006-6-msp@baylibre.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The driver sets wakeup enable by default. But not all UARTs are meant to
be wakeup enabled. Change the default to be wakeup capable but not
enabled. The user can enable wakeup when needed.
Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Acked-by: Kevin Hilman <khilman@baylibre.com>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Tested-by: Kevin Hilman <khilman@baylibre.com>
Link: https://lore.kernel.org/r/20240807141227.1093006-5-msp@baylibre.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If devm_request_irq fails, the code does not cleanup many things that
were setup before. Instead of directly returning ret we should jump to
err.
Fixes: fef4f60031 ("serial: 8250: omap: Fix life cycle issues for interrupt handlers")
Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Tested-by: Kevin Hilman <khilman@baylibre.com>
Link: https://lore.kernel.org/r/20240807141227.1093006-4-msp@baylibre.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This field seems to be unused for quite some time already. Remove it.
Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Tested-by: Kevin Hilman <khilman@baylibre.com>
Link: https://lore.kernel.org/r/20240807141227.1093006-3-msp@baylibre.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
quot_frac is unused in serial8250_do_set_divisor() since commit
b2b4b8ed3c (serial: 8250_exar: Move custom divisor support out from
8250_port). So no point to pass it.
Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
Cc: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20240805102046.307511-5-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The first element in uart_8250_port is a structure, so initializing
it to 0 causes a warning on newer compilers:
drivers/tty/serial/8250/8250_platform.c: In function 'serial8250_platform_probe':
drivers/tty/serial/8250/8250_platform.c:111:40: error: excess elements in struct initializer [-Werror]
111 | struct uart_8250_port uart = { 0 };
Use the modern empty {} initializer instead that works on all
supported compilers.
Fixes: d9e5a0ce2f ("serial: 8250_platform: Enable generic 16550A platform devices")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Link: https://lore.kernel.org/r/20240807075751.2206508-2-arnd@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The acpi_platform_serial_table[] array is defined globally without
an #ifdef check for CONFIG_ACPI, so ACPI_PTR() makes no sense
here:
drivers/tty/serial/8250/8250_platform.c:271:36: error: 'acpi_platform_serial_table' defined but not used [-Werror=unused-const-variable=]
271 | static const struct acpi_device_id acpi_platform_serial_table[] = {
Fixes: d9e5a0ce2f ("serial: 8250_platform: Enable generic 16550A platform devices")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
Link: https://lore.kernel.org/r/20240807075751.2206508-1-arnd@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Currently, 8250_platform driver is used only for devices with fixed
serial ports (plat_serial8250_port). Extend this driver for any generic
16550A platform devices which can be probed using standard hardware
discovery mechanisms like ACPI.
This is required in particular for RISC-V which has non-PNP generic
16550A compatible UART that needs to be enumerated as ACPI platform
device.
Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
Link: https://lore.kernel.org/r/20240730051218.767580-1-sunilvl@ventanamicro.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This adds suspend/resume support for the 8250_bcm2835aux
driver to provide power management support on attached
devices.
Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
Link: https://lore.kernel.org/r/20240728130029.78279-7-wahrenst@gmx.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
After commit 3a50365d8c ("serial: 8250: Add OF support for Xscale
variant"), 8250_of can support the xscale variant. Now, let's add
the earlycon support for xscale too.
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Link: https://lore.kernel.org/r/20240711160720.3488-3-jszhang@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There are two other drivers that bind to "mrvl,mmp-uart": the 8250_of
and the 8250_pxa. The previous one is generic and the latter is binded
to ARCH_PXA || ARCH_MMP. Now we may have pxa programming compatible
HW to support, making use of the generic 8250_of seems a good idea.
However, there's no earlycon support if we go with this solution. So
move the mmp|pxa-uart earlycon code to core 8250_early.c.
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Link: https://lore.kernel.org/r/20240711160720.3488-2-jszhang@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Previously 8250_dma used a circular xmit->buf as DMA output buffer. This
causes messages that wrap around in the circular buffer to be
transmitted using 2 DMA transfers. Depending on baud rate and processor
load this can cause an interchar gap in the middle of the message. On
the receiving end the gap may cause a short receive timeout, possibly
long enough to terminate a DMA transfer, but too short to restart a
receive DMA transfer in time thus causing a receive buffer overrun.
This is especially a problem for devices with high speed UARTs (HSU)
where even deep 64 byte FIFO's are not sufficient to handle interrupt
latency.
The circular buffer has now been replaced by kfifo which requires a SG
list with a single entry, which still causes 2 dma transfers when a wrap
around occurs. Fix this by allowing up to 2 entries in the sgl.
Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Ferry Toth <ftoth@exalondelft.nl>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20240716214055.102269-1-ftoth@exalondelft.nl
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Here is a small set of tty and serial driver updates for 6.11-rc1. Not
much happened this cycle, unlike the previous kernel release which had
lots of "excitement" in this part of the kernel. Included in here are
the following changes:
- dt binding updates for new platforms
- 8250 driver updates
- various small serial driver fixes and updates
- printk/console naming and matching attempt #2 (was reverted for
6.10-final, should be good to go this time around, acked by the
relevant maintainers).
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty / serial updates from Greg KH:
"Here is a small set of tty and serial driver updates for 6.11-rc1. Not
much happened this cycle, unlike the previous kernel release which had
lots of "excitement" in this part of the kernel. Included in here are
the following changes:
- dt binding updates for new platforms
- 8250 driver updates
- various small serial driver fixes and updates
- printk/console naming and matching attempt #2 (was reverted for
6.10-final, should be good to go this time around, acked by the
relevant maintainers).
All of these have been in linux-next for a while with no reported
issues"
* tag 'tty-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (22 commits)
Documentation: kernel-parameters: Add DEVNAME:0.0 format for serial ports
serial: core: Add serial_base_match_and_update_preferred_console()
printk: Add match_devname_and_update_preferred_console()
serial: sc16is7xx: hardware reset chip if reset-gpios is defined in DT
dt-bindings: serial: sc16is7xx: add reset-gpios
dt-bindings: serial: vt8500-uart: convert to json-schema
serial: 8250_platform: Explicitly show we initialise ISA ports only once
tty: add missing MODULE_DESCRIPTION() macros
dt-bindings: serial: mediatek,uart: add MT7988
serial: sh-sci: Add support for RZ/V2H(P) SoC
dt-bindings: serial: Add documentation for Renesas RZ/V2H(P) (R9A09G057) SCIF support
dt-bindings: serial: renesas,scif: Make 'interrupt-names' property as required
dt-bindings: serial: renesas,scif: Validate 'interrupts' and 'interrupt-names'
dt-bindings: serial: renesas,scif: Move ref for serial.yaml at the end
riscv: dts: starfive: jh7110: Add the core reset and jh7110 compatible for uarts
serial: 8250_dw: Use reset array API to get resets
dt-bindings: serial: snps-dw-apb-uart: Add one more reset signal for StarFive JH7110 SoC
serial: 8250: Extract platform driver
serial: 8250: Extract RSA bits
serial: imx: stop casting struct uart_port to struct imx_port
...
Errata i2310[0] says, Erroneous timeout can be triggered,
if this Erroneous interrupt is not cleared then it may leads
to storm of interrupts.
Commit 9d141c1e61 ("serial: 8250_omap: Implementation of Errata i2310")
which added the workaround but missed ensuring RX FIFO is really empty
before applying the errata workaround as recommended in the errata text.
Fix this by adding back check for UART_OMAP_RX_LVL to be 0 for
workaround to take effect.
[0] https://www.ti.com/lit/pdf/sprz536 page 23
Fixes: 9d141c1e61 ("serial: 8250_omap: Implementation of Errata i2310")
Cc: stable@vger.kernel.org
Reported-by: Vignesh Raghavendra <vigneshr@ti.com>
Closes: https://lore.kernel.org/all/e96d0c55-0b12-4cbf-9d23-48963543de49@ti.com/
Signed-off-by: Udit Kumar <u-kumar1@ti.com>
Link: https://lore.kernel.org/r/20240625160725.2102194-1-u-kumar1@ti.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge 6.10-rc6 into tty-next
This resolves the merge issues in the 8250 code due to some reverts in
6.10-rc6 in the console changes.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This reverts commit a8b04cfe7d.
Let's roll back all of the serial core and printk console changes that
went into 6.10-rc1 as there still are problems with them that need to be
sorted out.
Link: https://lore.kernel.org/r/ZnpRozsdw6zbjqze@tlindgre-MOBL1
Reported-by: Petr Mladek <pmladek@suse.com>
Reported-by: Tony Lindgren <tony@atomide.com>
Cc: Jiri Slaby <jirislaby@kernel.org>
Cc: John Ogness <john.ogness@linutronix.de>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Normally, the number of ports is indicated by the third digit of the
device ID on Moxa PCI serial boards. For example, `0x1121` indicates a
device with 2 ports.
However, `CP116E_A_A` and `CP116E_A_B` are exceptions; they have 8
ports, but the third digit of the device ID is `6`.
This patch introduces a function to retrieve the number of ports on Moxa
PCI serial boards, addressing the issue described above.
Fixes: 37058fd5d2 ("tty: serial: 8250: Add support for MOXA Mini PCIe boards")
Cc: stable <stable@kernel.org>
Signed-off-by: Crescent Hsieh <crescentcy.hsieh@moxa.com>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Link: https://lore.kernel.org/r/20240617063058.18866-1-crescentcy.hsieh@moxa.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
serial8250_isa_init_ports() uses home grown approach to make itself
a singleton. Instead, explicitly show that we initialise ISA ports
once by providing a helper function which calls the original function
via DO_ONCE() macro.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20240606184841.3102545-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/tty/serial/8250/8250_base.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/tty/serial/8250/8250_pxa.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/tty/serial/8250/serial_cs.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/tty/serial/esp32_uart.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/tty/serial/esp32_acm.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/tty/serial/owl-uart.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/tty/n_hdlc.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/tty/n_gsm.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/tty/ttynull.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/tty/goldfish.o
Add all missing invocations of the MODULE_DESCRIPTION() macro.
Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://lore.kernel.org/r/20240607-md-drivers-tty-v1-1-50a7efb8bed8@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Some SoCs like StarFive JH7110 require two or more resets.
So change to use the reset array API to get resets.
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>
Link: https://lore.kernel.org/r/20240604084729.57239-3-hal.feng@starfivetech.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'v6.10-rc4' into tty-next
We need the tty/serial fixes in here as well
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The FIFO is 64 bytes, but the FCR is configured to fire the TX interrupt
when the FIFO is half empty (bit 3 = 0). Thus, we should only write 32
bytes when a TX interrupt occurs.
This fixes a problem observed on the PXA168 that dropped a bunch of TX
bytes during large transmissions.
Fixes: ab28f51c77 ("serial: rewrite pxa2xx-uart to use 8250_core")
Signed-off-by: Doug Brown <doug@schmorgal.com>
Link: https://lore.kernel.org/r/20240519191929.122202-1-doug@schmorgal.com
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This reverts commit d9666dfb31.
The container of the struct dw8250_port_data is private to the actual
driver. In particular, 8250_lpss and 8250_dw use different data types
that are assigned to the UART port private_data. Hence, it must not
be used outside the specific driver.
Fix the mistake made in the past by moving the respective definitions
to the specific driver.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20240514190730.2787071-3-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The container of the struct dw8250_port_data is private to the actual
driver. In particular, 8250_lpss and 8250_dw use different data types
that are assigned to the UART port private_data. Hence, it must not
be used outside the specific driver.
Currently the only cpr_val is required by the common code, make it
be available via struct dw8250_port_data.
This fixes the UART breakage on Intel Galileo boards.
Fixes: 593dea000b ("serial: 8250: dw: Allow to use a fallback CPR value if not synthesized")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20240514190730.2787071-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Extract platform driver to a separate module for better maintenance
and to reduce churn on 8250_core part changes when it's solely related
to the former. No functional changes intended.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Sunil V L <sunilvl@ventanamicro.com>
Tested-by: Sunil V L <sunilvl@ventanamicro.com>
Link: https://lore.kernel.org/r/20240506140308.4040735-3-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Extract RSA bits to a separate module for better maintenance
and to reduce a churn on 8250_core part changes when it's solely
related to the former. No functional changes intended.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20240506140308.4040735-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Here are some small TTY and Serial driver fixes that missed the
6.9-final merge window, but have been in my tree for weeks (my fault,
travel caused me to miss this.)
These fixes include:
- more n_gsm fixes for reported problems
- 8520_mtk driver fix
- 8250_bcm7271 driver fix
- sc16is7xx driver fix
All of these have been in linux-next for weeks without any reported
problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-6.10-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial fixes from Greg KH:
"Here are some small TTY and Serial driver fixes that missed the
6.9-final merge window, but have been in my tree for weeks (my fault,
travel caused me to miss this)
These fixes include:
- more n_gsm fixes for reported problems
- 8520_mtk driver fix
- 8250_bcm7271 driver fix
- sc16is7xx driver fix
All of these have been in linux-next for weeks without any reported
problems"
* tag 'tty-6.10-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
serial: sc16is7xx: fix bug in sc16is7xx_set_baud() when using prescaler
serial: 8250_bcm7271: use default_mux_rate if possible
serial: 8520_mtk: Set RTS on shutdown for Rx in-band wakeup
tty: n_gsm: fix missing receive state reset after mode switch
tty: n_gsm: fix possible out-of-bounds in gsm0_receive()
Here is the big set of tty/serial driver changes for 6.10-rc1. Included
in here are:
- Usual good set of api cleanups and evolution by Jiri Slaby to make
the serial interfaces move out of the 1990's by using kfifos instead
of hand-rolling their own logic.
- 8250_exar driver updates
- max3100 driver updates
- sc16is7xx driver updates
- exar driver updates
- sh-sci driver updates
- tty ldisc api addition to help refuse bindings
- other smaller serial driver updates
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty / serial updates from Greg KH:
"Here is the big set of tty/serial driver changes for 6.10-rc1.
Included in here are:
- Usual good set of api cleanups and evolution by Jiri Slaby to make
the serial interfaces move out of the 1990's by using kfifos
instead of hand-rolling their own logic.
- 8250_exar driver updates
- max3100 driver updates
- sc16is7xx driver updates
- exar driver updates
- sh-sci driver updates
- tty ldisc api addition to help refuse bindings
- other smaller serial driver updates
All of these have been in linux-next for a while with no reported
issues"
* tag 'tty-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (113 commits)
serial: Clear UPF_DEAD before calling tty_port_register_device_attr_serdev()
serial: imx: Raise TX trigger level to 8
serial: 8250_pnp: Simplify "line" related code
serial: sh-sci: simplify locking when re-issuing RXDMA fails
serial: sh-sci: let timeout timer only run when DMA is scheduled
serial: sh-sci: describe locking requirements for invalidating RXDMA
serial: sh-sci: protect invalidating RXDMA on shutdown
tty: add the option to have a tty reject a new ldisc
serial: core: Call device_set_awake_path() for console port
dt-bindings: serial: brcm,bcm2835-aux-uart: convert to dtschema
tty: serial: uartps: Add support for uartps controller reset
arm64: zynqmp: Add resets property for UART nodes
dt-bindings: serial: cdns,uart: Add optional reset property
serial: 8250_pnp: Switch to DEFINE_SIMPLE_DEV_PM_OPS()
serial: 8250_exar: Keep the includes sorted
serial: 8250_exar: Make type of bit the same in exar_ee_*_bit()
serial: 8250_exar: Use BIT() in exar_ee_read()
serial: 8250_exar: Switch to use dev_err_probe()
serial: 8250_exar: Return directly from switch-cases
serial: 8250_exar: Decrease indentation level
...
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Merge tag 'pci-v6.10-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull pci updates from Bjorn Helgaas:
"Enumeration:
- Skip E820 checks for MCFG ECAM regions for new (2016+) machines,
since there's no requirement to describe them in E820 and some
platforms require ECAM to work (Bjorn Helgaas)
- Rename PCI_IRQ_LEGACY to PCI_IRQ_INTX to be more specific (Damien
Le Moal)
- Remove last user and pci_enable_device_io() (Heiner Kallweit)
- Wait for Link Training==0 to avoid possible race (Ilpo Järvinen)
- Skip waiting for devices that have been disconnected while
suspended (Ilpo Järvinen)
- Clear Secondary Status errors after enumeration since Master Aborts
and Unsupported Request errors are an expected part of enumeration
(Vidya Sagar)
MSI:
- Remove unused IMS (Interrupt Message Store) support (Bjorn Helgaas)
Error handling:
- Mask Genesys GL975x SD host controller Replay Timer Timeout
correctable errors caused by a hardware defect; the errors cause
interrupts that prevent system suspend (Kai-Heng Feng)
- Fix EDR-related _DSM support, which previously evaluated revision 5
but assumed revision 6 behavior (Kuppuswamy Sathyanarayanan)
ASPM:
- Simplify link state definitions and mask calculation (Ilpo
Järvinen)
Power management:
- Avoid D3cold for HP Pavilion 17 PC/1972 PCIe Ports, where BIOS
apparently doesn't know how to put them back in D0 (Mario
Limonciello)
CXL:
- Support resetting CXL devices; special handling required because
CXL Ports mask Secondary Bus Reset by default (Dave Jiang)
DOE:
- Support DOE Discovery Version 2 (Alexey Kardashevskiy)
Endpoint framework:
- Set endpoint BAR to be 64-bit if the driver says that's all the
device supports, in addition to doing so if the size is >2GB
(Niklas Cassel)
- Simplify endpoint BAR allocation and setting interfaces (Niklas
Cassel)
Cadence PCIe controller driver:
- Drop DT binding redundant msi-parent and pci-bus.yaml (Krzysztof
Kozlowski)
Cadence PCIe endpoint driver:
- Configure endpoint BARs to be 64-bit based on the BAR type, not the
BAR value (Niklas Cassel)
Freescale Layerscape PCIe controller driver:
- Convert DT binding to YAML (Frank Li)
MediaTek MT7621 PCIe controller driver:
- Add DT binding missing 'reg' property for child Root Ports
(Krzysztof Kozlowski)
- Fix theoretical string truncation in PHY name (Sergio Paracuellos)
NVIDIA Tegra194 PCIe controller driver:
- Return success for endpoint probe instead of falling through to the
failure path (Vidya Sagar)
Renesas R-Car PCIe controller driver:
- Add DT binding missing IOMMU properties (Geert Uytterhoeven)
- Add DT binding R-Car V4H compatible for host and endpoint mode
(Yoshihiro Shimoda)
Rockchip PCIe controller driver:
- Configure endpoint BARs to be 64-bit based on the BAR type, not the
BAR value (Niklas Cassel)
- Add DT binding missing maxItems to ep-gpios (Krzysztof Kozlowski)
- Set the Subsystem Vendor ID, which was previously zero because it
was masked incorrectly (Rick Wertenbroek)
Synopsys DesignWare PCIe controller driver:
- Restructure DBI register access to accommodate devices where this
requires Refclk to be active (Manivannan Sadhasivam)
- Remove the deinit() callback, which was only need by the
pcie-rcar-gen4, and do it directly in that driver (Manivannan
Sadhasivam)
- Add dw_pcie_ep_cleanup() so drivers that support PERST# can clean
up things like eDMA (Manivannan Sadhasivam)
- Rename dw_pcie_ep_exit() to dw_pcie_ep_deinit() to make it parallel
to dw_pcie_ep_init() (Manivannan Sadhasivam)
- Rename dw_pcie_ep_init_complete() to dw_pcie_ep_init_registers() to
reflect the actual functionality (Manivannan Sadhasivam)
- Call dw_pcie_ep_init_registers() directly from all the glue
drivers, not just those that require active Refclk from the host
(Manivannan Sadhasivam)
- Remove the "core_init_notifier" flag, which was an obscure way for
glue drivers to indicate that they depend on Refclk from the host
(Manivannan Sadhasivam)
TI J721E PCIe driver:
- Add DT binding J784S4 SoC Device ID (Siddharth Vadapalli)
- Add DT binding J722S SoC support (Siddharth Vadapalli)
TI Keystone PCIe controller driver:
- Add DT binding missing num-viewport, phys and phy-name properties
(Jan Kiszka)
Miscellaneous:
- Constify and annotate with __ro_after_init (Heiner Kallweit)
- Convert DT bindings to YAML (Krzysztof Kozlowski)
- Check for kcalloc() failure in of_pci_prop_intr_map() (Duoming
Zhou)"
* tag 'pci-v6.10-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (97 commits)
PCI: Do not wait for disconnected devices when resuming
x86/pci: Skip early E820 check for ECAM region
PCI: Remove unused pci_enable_device_io()
ata: pata_cs5520: Remove unnecessary call to pci_enable_device_io()
PCI: Update pci_find_capability() stub return types
PCI: Remove PCI_IRQ_LEGACY
scsi: vmw_pvscsi: Do not use PCI_IRQ_LEGACY instead of PCI_IRQ_LEGACY
scsi: pmcraid: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY
scsi: mpt3sas: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY
scsi: megaraid_sas: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY
scsi: ipr: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY
scsi: hpsa: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY
scsi: arcmsr: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY
wifi: rtw89: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY
dt-bindings: PCI: rockchip,rk3399-pcie: Add missing maxItems to ep-gpios
Revert "genirq/msi: Provide constants for PCI/IMS support"
Revert "x86/apic/msi: Enable PCI/IMS"
Revert "iommu/vt-d: Enable PCI/IMS"
Revert "iommu/amd: Enable PCI/IMS"
Revert "PCI/MSI: Provide IMS (Interrupt Message Store) support"
...
I had investigated dropping support for alpha EV5 and earlier a while
ago after noticing that this is the only supported CPU family
in the kernel without native byte access and that Debian has already
dropped support for this generation last year [1] in order to
improve performance for the newer machines.
This topic came up again when Paul E. McKenney noticed that
parts of the RCU code already rely on byte access and do not
work on alpha EV5 reliably, so we decided on using my series to
avoid the problem entirely.
Al Viro did another series for alpha to address all the known build
issues. I rebased his patches without any further changes and included
it as a baseline for my work here to avoid conflicts and allow
backporting the fixes to stable kernels for the now removed hardware
support as well.
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Merge tag 'asm-generic-alpha' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
Pull alpha updates from Arnd Bergmann:
"I had investigated dropping support for alpha EV5 and earlier a while
ago after noticing that this is the only supported CPU family in the
kernel without native byte access and that Debian has already dropped
support for this generation last year [1] in order to improve
performance for the newer machines.
This topic came up again when Paul McKenney noticed that parts of the
RCU code already rely on byte access and do not work on alpha EV5
reliably, so we decided on using my series to avoid the problem
entirely.
Al Viro did another series for alpha to address all the known build
issues. I rebased his patches without any further changes and included
it as a baseline for my work here to avoid conflicts and allow
backporting the fixes to stable kernels for the now removed hardware
support as well"
[ I dearly loved alpha back in the days, but the lack of byte and word
operations was a horrible mistake and made everything worse -
including very much the crazy IO contortions that resulted from it.
It certainly wasn't the only mistake in the architecture, but it's the
first-order issue.
So while it's a bit sad to see the support for my first alpha go away,
if you want to run museum hardware, maybe you should use museum
kernels.. - Linus ]
* tag 'asm-generic-alpha' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
alpha: drop pre-EV56 support
alpha: cabriolet: remove EV5 CPU support
alpha: remove LCA and APECS based machines
alpha: sable: remove early machine support
alpha: remove DECpc AXP150 (Jensen) support
alpha: trim the unused stuff from asm-offsets.c
alpha: jensen, t2 - make __EXTERN_INLINE same as for the rest
alpha: core_lca: take the unused functions out
alpha: missing includes
alpha: sys_sio: fix misspelled ifdefs
alpha: don't make functions public without a reason
alpha: add clone3() support
alpha: fix modversions for strcpy() et.al.
alpha: sort scr_mem{cpy,move}w() out
8250_pnp sets drvdata to line + 1 if the probe is successful. The users
of drvdata are in remove, suspend and resume callbacks, none of which
will be called if probe failed. The line acquired from drvdata can
never be zero in those functions and the checks for that can be
removed.
Eliminate also +/-1 step because all users of line subtract 1 from the
value.
These might have been leftover from legacy PM callbacks that could
be called without probe being successful.
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20240506121202.11253-1-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There is a scenario when resuming from some power saving states
with no_console_suspend where console output can be generated
before the 8250_bcm7271 driver gets the opportunity to restore
the baud_mux_clk frequency. Since the baud_mux_clk is at its
default frequency at this time the output can be garbled until
the driver gets the opportunity to resume.
Since this is only an issue with console use of the serial port
during that window and the console isn't likely to use baud
rates that require alternate baud_mux_clk frequencies, allow the
driver to select the default_mux_rate if it is accurate enough.
Fixes: 41a469482d ("serial: 8250: Add new 8250-core based Broadcom STB driver")
Cc: stable@vger.kernel.org
Signed-off-by: Doug Berger <opendmb@gmail.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Tested-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://lore.kernel.org/r/20240424222559.1844045-1-opendmb@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When Rx in-band wakeup is enabled, set RTS to true in mtk8250_shutdown()
so the connected device can still send message and trigger IRQ when the
system is suspended.
Fixes: 18c9d4a3c2 ("serial: When UART is suspended, set RTS to false")
Cc: stable <stable@kernel.org>
Signed-off-by: Pin-yen Lin <treapking@chromium.org>
Link: https://lore.kernel.org/r/20240424130619.2924456-1-treapking@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The SIMPLE_DEV_PM_OPS() is deprecated, replace it with the
DEFINE_SIMPLE_DEV_PM_OPS() and use pm_sleep_ptr() for setting
the driver's PM routines.
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20240422083237.207447-1-andy.shevchenko@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
