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path: root/drivers/tty/serial/8250
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2019-09-04serial: 8250_pci: Add support for Sunix serial boardsKai-Heng Feng2-17/+84
Add support to Sunix serial boards with up to 16 ports. Sunix board need its own setup callback instead of using Timedia's, to properly support more than 4 ports. Cc: Morris Ku <morris_ku@sunix.com> Cc: Debbie Liu <debbie_liu@sunix.com> Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com> Link: https://lore.kernel.org/r/20190809190130.30773-1-kai.heng.feng@canonical.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-04serial: 8250_lpss: Enable HS UART on Elkhart LakeAndy Shevchenko1-0/+18
Intel Elkhart Lake may use High Speed UART from OSE IP block. This is different to what we have in main LPSS, though compatible with older version of it, which is handled by this driver. Enable OSE HS UART on Intel Elkhart Lake by adding PCI IDs. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Link: https://lore.kernel.org/r/20190806094322.64987-9-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-04serial: 8250_lpss: Get rid of custom LPSS_DEVICE() macroAndy Shevchenko1-10/+8
Since PCI core provides a generic PCI_DEVICE_DATA() macro, replace LPSS_DEVICE() with former one. No functional change intended. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Link: https://lore.kernel.org/r/20190806094322.64987-8-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-04serial: 8250_lpss: register DMA IRQ and pool with instance IDAndy Shevchenko1-0/+1
It is really useful not only for debugging to have an DMA IRQ line and pool being mapped to the corresponding IP by using its instance ID. Provide PCI device and function as instance ID for Intel Quark UART DMA. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Link: https://lore.kernel.org/r/20190806094322.64987-7-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-04serial: 8250_lpss: add fractional divisor supportAndy Shevchenko1-5/+2
For Synopsys DesignWare 8250 uart which version >= 4.00a, there's a valid divisor latch fraction register. Now the preparation is done, it's easy to add the feature support. This patch firstly tries to get the fractional divisor width during probe, then setups specific get_divisor() and set_divisor() hook. Among other changes the FIFO size is now retrieved from the hardware. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Link: https://lore.kernel.org/r/20190806094322.64987-6-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-04serial: 8250_lpss: switch to use 8250_dwlib libraryAndy Shevchenko2-9/+14
Since we have a common library module for Synopsys DesignWare UART, let us use it. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Link: https://lore.kernel.org/r/20190806094322.64987-5-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-04serial: 8250_dw: switch to use 8250_dwlib libraryAndy Shevchenko2-135/+28
Since we have a common library module for Synopsys DesignWare UART, let us use it. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Link: https://lore.kernel.org/r/20190806094322.64987-4-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-04serial: 8250_dw: split Synopsys DesignWare 8250 common functionsAndy Shevchenko4-0/+149
We would like to use same functions in the couple of drivers for Synopsys DesignWare 8250 UART. Split them from 8250_dw into new brand library module which users will select explicitly. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Link: https://lore.kernel.org/r/20190806094322.64987-3-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-04serial: 8250_dw: use pointer to uart local variableAndy Shevchenko1-4/+4
The use of pointer will simplify enabling runtime PM for the driver. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Link: https://lore.kernel.org/r/20190806094322.64987-2-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-04serial: 8250_dw: Use a unified new dev variable in removeAndy Shevchenko1-3/+4
The commit 2cb78eab2376 ("serial: 8250_dw: Use a unified new dev variable in probe") introduced a local dev variable in ->probe(). Do the same in ->remove() in order to prepare for sequential patches. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Kefeng Wang <wangkefeng.wang@huawei.com> Link: https://lore.kernel.org/r/20190806094322.64987-1-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-04serial: 8250_exar: Replace msleep(1) with usleep_range()Andy Shevchenko1-1/+1
As explained in Documentation/timers/timers-howto.rst the small amount of milliseconds sometimes produces much longer delays. Replace msleep(1) with usleep_range(1000, 1100). Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20190805142535.21948-2-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-04serial: 8250_exar: Consolidate callback assignments in default_setup()Andy Shevchenko1-22/+21
For better maintenance consolidate port callbacks in default_setup(). Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20190805142535.21948-1-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-04serial: 8250: Don't check for mctrl_gpio_init() returning -ENOSYSFrieder Schrempf1-4/+2
Now that the mctrl_gpio code returns NULL instead of ERR_PTR(-ENOSYS) if CONFIG_GPIOLIB is disabled, we can safely remove this check. Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de> Acked-by: Uwe Kleine-Knig <u.kleine-koenig@pengutronix.de> Link: https://lore.kernel.org/r/20190802100349.8659-4-frieder.schrempf@kontron.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-04serial: 8250_exar: Absorb remaining 8250_port INT0 supportAaron Sierra2-17/+16
Move INT0 clearing out of common, per-port serial8250_do_startup() into PCI device probe/resume. As described in commit 2c0ac5b48a35 ("serial: exar: Fix stuck MSIs"), the purpose of clearing INT0 is to prevent the PCI interrupt line from becoming stuck asserted, "which is fatal with edge-triggered MSIs". Like the clearing via interrupt handler that moved from common code in commit c7e1b4059075 ("tty: serial: exar: Relocate sleep wake-up handling"), this clearing at startup can be better handled at the PCI device level. Cc: Jan Kiszka <jan.kiszka@siemens.com> Cc: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk> Signed-off-by: Aaron Sierra <asierra@xes-inc.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20190801185956.3222-1-asierra@xes-inc.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-04serial: 8250_exar: Clear buffer before shutdownRobert Middleton1-0/+23
When closing and shutting down the exar serial port, if the chip has not finished sending all of the data in its buffer, the remaining bytes will be lost. Hold off on the shutdown until the bytes have all been sent. Signed-off-by: Robert Middleton <robert.middleton@rm5248.com> Link: https://lore.kernel.org/r/20190801145640.26080-1-robert.middleton@rm5248.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-04serial: 8250_exar: Move custom divisor support out from 8250_portAndy Shevchenko2-26/+28
There are Exar custom divisor support in 8250_port which belongs to 8250_exar module. Move it out to the correct module and do not contaminate generic code with it. Cc: Aaron Sierra <asierra@xes-inc.com> Cc: Jan Kiszka <jan.kiszka@siemens.com> Cc: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20190731170558.52897-3-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-04serial: 8250_exar: Extract PM routine from 8250_portAndy Shevchenko2-14/+16
There are Exar quirks in 8250_port which belong to 8250_exar module. Extract PM routine to the correct module and do not contaminate generic code with it. Cc: Aaron Sierra <asierra@xes-inc.com> Cc: Jan Kiszka <jan.kiszka@siemens.com> Cc: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20190731170558.52897-2-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-04serial: 8250_exar: No need to autoconfigure Exar portsAndy Shevchenko2-36/+17
Since we have a separate driver there is no need to autoconfigure ports, we already know what they are. Drop autoconfiguration in 8250_port and move type detection to 8250_exar. Cc: Aaron Sierra <asierra@xes-inc.com> Cc: Jan Kiszka <jan.kiszka@siemens.com> Cc: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20190731170558.52897-1-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-04tty: Remove dev_err() usage after platform_get_irq()Stephen Boyd3-9/+3
We don't need dev_err() messages when platform_get_irq() fails now that platform_get_irq() prints an error message itself when something goes wrong. Let's remove these prints with a simple semantic patch. // <smpl> @@ expression ret; struct platform_device *E; @@ ret = ( platform_get_irq(E, ...) | platform_get_irq_byname(E, ...) ); if ( \( ret < 0 \| ret <= 0 \) ) { ( -if (ret != -EPROBE_DEFER) -{ ... -dev_err(...); -... } | ... -dev_err(...); ) ... } // </smpl> While we're here, remove braces on if statements that only have one statement (manually). Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jslaby@suse.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Stephen Boyd <swboyd@chromium.org> Link: https://lore.kernel.org/r/20190730181557.90391-45-swboyd@chromium.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-04serial: 8250_pnp: Move to struct dev_pm_opsAndy Shevchenko1-11/+9
The established way to provide PM callbacks is through struct dev_pm_ops which is more generic. Convert driver to use it instead of legacy approach. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20190726172817.73253-1-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-04serial/8250: Add support for NI-Serial PXI/PXIe+485 devicesJe Yen Tam1-4/+288
Add support for NI-Serial PXIe-RS232, PXI-RS485 and PXIe-RS485 devices. Signed-off-by: Je Yen Tam <je.yen.tam@ni.com> Link: https://lore.kernel.org/r/20190726074012.2590-1-je.yen.tam@ni.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-048250_lpss: check null return when calling pci_ioremap_barNavid Emamdoost1-2/+8
pci_ioremap_bar may return null. This is eventually de-referenced at drivers/dma/dw/core.c:1154 and drivers/dma/dw/core.c:1168. A null check is needed to prevent null de-reference. I am adding the check and in case of failure. Thanks to Andy Shevchenko for the hint on the necessity of pci_iounmap when exiting. Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20190719174848.24216-1-navid.emamdoost@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-04serial: 8250_exar: Use struct_size() helperAndy Shevchenko1-3/+1
One of the more common cases of allocation size calculations is finding the size of a structure that has a zero-sized array at the end, along with memory for some number of elements for that array. Make use of the struct_size() helper instead of an open-coded version in order to avoid any potential type mistakes. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20190721150135.82065-1-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-04serial: 8250: Use dev_get_drvdata where possibleChuhong Yuan2-4/+2
Instead of using to_pci_dev + pci_get_drvdata, use dev_get_drvdata to make code simpler. Signed-off-by: Chuhong Yuan <hslester96@gmail.com> Link: https://lore.kernel.org/r/20190724131758.1764-1-hslester96@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-04serial: 8250_omap: Fix idling for unloaded serdev driversTony Lindgren1-1/+10
For many years omap variants have been setting the runtime PM autosuspend delay to -1 to prevent unsafe policy with lossy first character on wake-up. The user must specifically enable the timeout for UARTs if desired. We must not enable the workaround for serdev devices though. It leads into UARTs not idling if no serdev devices are loaded and there is no sysfs entry to configure the UART in that case. And this means that my PM may not work unless the serdev modules are loaded. We can detect a serdev device being configured based on a dts child node, and we can simply skip the workround in that case. And the serdev driver can idle the port during runtime when suitable if an out-of-band wake-up GPIO line exists for example. Let's also add some comments to the workaround while at it. Cc: Johan Hovold <johan@kernel.org> Signed-off-by: Tony Lindgren <tony@atomide.com> Link: https://lore.kernel.org/r/20190723115400.46432-1-tony@atomide.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-03serial: 8250: 8250_core: Fix missing unlock on error in ↵Wei Yongjun1-2/+5
serial8250_register_8250_port() Add the missing unlock before return from function serial8250_register_8250_port() in the error handling case. Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Link: https://lore.kernel.org/r/20190703055908.141294-1-weiyongjun1@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-21Revert "serial: 8250: Don't service RX FIFO if interrupts are disabled"Oliver Barta1-2/+1
This reverts commit 2e9fe539108320820016f78ca7704a7342788380. Reading LSR unconditionally but processing the error flags only if UART_IIR_RDI bit was set before in IIR may lead to a loss of transmission error information on UARTs where the transmission error flags are cleared by a read of LSR. Information are lost in case an error is detected right before the read of LSR while processing e.g. an UART_IIR_THRI interrupt. Signed-off-by: Oliver Barta <o.barta89@gmail.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Fixes: 2e9fe5391083 ("serial: 8250: Don't service RX FIFO if interrupts are disabled") Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-21tty/serial/8250: use mctrl_gpio helpersYegor Yefremov5-15/+61
This patch permits the usage for GPIOs to control the CTS/RTS/DTR/DSR/DCD/RI signals. Changed by Stefan: Only call mctrl_gpio_init(), if the device has no ACPI companion device to not break existing ACPI based systems. Also only use the mctrl_gpio_ functions when "gpios" is available. Use MSR / MCR <-> TIOCM wrapper functions. Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com> Signed-off-by: Stefan Roese <sr@denx.de> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Tested-by: Yegor Yefremov <yegorslists@googlemail.com> Cc: Mika Westerberg <mika.westerberg@linux.intel.com> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Giulio Benetti <giulio.benetti@micronovasrl.com> Cc: Yegor Yefremov <yegorslists@googlemail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-18serial: 8250: pericom_do_set_divisor can be statickbuild test robot1-1/+1
Fixes: 6bf4e42f1d19 ("serial: 8250: Add support for higher baud rates to Pericom chips") Signed-off-by: kbuild test robot <lkp@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-18serial: 8250: Add MSR/MCR TIOCM conversion wrapper functionsStefan Roese2-22/+57
This patch adds wrapper functions to convert MSR <-> TIOCM and also MCR <-> TIOCM. These functions are used now in serial8250_do_set_mctrl() and serial8250_do_get_mctrl(). Signed-off-by: Stefan Roese <sr@denx.de> Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Yegor Yefremov <yegorslists@googlemail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Giulio Benetti <giulio.benetti@micronovasrl.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-18serial: 8250: factor out serial8250_{set,clear}_THRI() helpersAndy Shevchenko4-27/+26
Factor out similar code pieces that set or clear UART_IER_THRI bit to serial8250_{set,clear}_THRI() helpers. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-18serial: 8250: Add support for higher baud rates to Pericom chipsJay Dolan1-18/+79
The Pericom chips can achieve additional baud rates by programming the sample clock register. The baud rates can be described as 921600 * 16 / (16 - scr) for scr values 5 to 15. The divisor is set to 1 for these baud rates. Adds new quirk for Pericom chips other than the four port chips to use the Signed-off-by: Jay Dolan <jay.dolan@accesio.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-10serial: 8250: Fix TX interrupt handling conditionRautkoski Kimmo EXT1-1/+2
Interrupt handler checked THRE bit (transmitter holding register empty) in LSR to detect if TX fifo is empty. In case when there is only receive interrupts the TX handling got called because THRE bit in LSR is set when there is no transmission (FIFO empty). TX handling caused TX stop, which in RS-485 half-duplex mode actually resets receiver FIFO. This is not desired during reception because of possible data loss. The fix is to check if THRI is set in IER in addition of the TX fifo status. THRI in IER is set when TX is started and cleared when TX is stopped. This ensures that TX handling is only called when there is really transmission on going and an interrupt for THRE and not when there are only RX interrupts. Signed-off-by: Kimmo Rautkoski <ext-kimmo.rautkoski@vaisala.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-10tty: serial: 8250-of: Do not warn on deferred probeThierry Reding1-2/+3
Deferred probe is an expected return value for clk_get() on many platforms. The driver deals with it properly, so there's no need to output a warning that may potentially confuse users. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-10uart: mediatek: support Rx in-band wakeupClaire Chang1-0/+24
In order to support Rx in-band wakeup, we need to enable irq wake on an edge sensitive interrupt of Rx pin before suspend and disable it when resuming. This interrupt is used only as wake source to resume the system when suspended. Note that the sent character will be lost as the controller is actually suspended. We use this to support wakeup on bluetooth. Bluetooth will repeatedly send 0xFD to wakeup host. Once host detects Rx falling, an interrupt is triggered, and the system leaves sleep state. Then, the bluetooth driver will send 0xFC to bluetooth and bluetooth can start to send normal HCI packets. Signed-off-by: Claire Chang <tientzu@chromium.org> Reviewed-by: Nicolas Boichat <drinkcat@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-10serial: 8250-mtk: modify uart DMA rxLong Cheng1-29/+20
Modify uart rx and complete for DMA Signed-off-by: Long Cheng <long.cheng@mediatek.com> Reviewed-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21tty: serial: 8250: Fix type field in format stringHao Lee1-2/+2
The dev_dbg statement should print the value of uart.port.mapbase instead of its address. Besides that, uart.port.irq and uart.port.iotype are all unsigned types, so using %u is more appropriate. Signed-off-by: Hao Lee <haolee.swjtu@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21serial: 8250_of: Use of_device_get_match_data()Andy Shevchenko1-6/+3
Use of_device_get_match_data() to simplify the code a bit. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Tested-by: John Garry <john.garry@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-09Merge tag 'dmaengine-5.2-rc1' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds1-2/+2
Pull dmaengine updates from Vinod Koul: - Updates to stm32 dma residue calculations - Interleave dma capability to axi-dmac and support for ZynqMP arch - Rework of channel assignment for rcar dma - Debugfs for pl330 driver - Support for Tegra186/Tegra194, refactoring for new chips and support for pause/resume - Updates to axi-dmac, bcm2835, fsl-edma, idma64, imx-sdma, rcar-dmac, stm32-dma etc - dev_get_drvdata() updates on few drivers * tag 'dmaengine-5.2-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (34 commits) dmaengine: tegra210-adma: restore channel status dmaengine: tegra210-dma: free dma controller in remove() dmaengine: tegra210-adma: add pause/resume support dmaengine: tegra210-adma: add support for Tegra186/Tegra194 Documentation: DT: Add compatibility binding for Tegra186 dmaengine: tegra210-adma: prepare for supporting newer Tegra chips dmaengine: at_xdmac: remove a stray bottom half unlock dmaengine: fsl-edma: Adjust indentation dmaengine: fsl-edma: Fix typo in Vybrid name dmaengine: stm32-dma: fix residue calculation in stm32-dma dmaengine: nbpfaxi: Use dev_get_drvdata() dmaengine: bcm-sba-raid: Use dev_get_drvdata() dmaengine: stm32-dma: Fix unsigned variable compared with zero dmaengine: stm32-dma: use platform_get_irq() dmaengine: rcar-dmac: Update copyright information dmaengine: imx-sdma: Only check ratio on parts that support 1:1 dmaengine: xgene-dma: fix spelling mistake "descripto" -> "descriptor" dmaengine: idma64: Move driver name to the header dmaengine: bcm2835: Drop duplicate capability setting. dmaengine: pl330: _stop: clear interrupt status ...
2019-04-25serial: 8250-mtk: modify baudrate settingLong Cheng1-0/+102
In termios function, add Fractional divider to adjust baudrate. Signed-off-by: Long Cheng <long.cheng@mediatek.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-04-25serial: 8250-mtk: add follow controlLong Cheng1-23/+37
Add SW and HW follow control function. Signed-off-by: Long Cheng <long.cheng@mediatek.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-04-25serial: 8250_exar: Adjust IOT2000 matchingSu Bao Cheng1-2/+5
Since there are more IOT2040 variants with identical hardware but different asset tags, the asset tag matching should be adjusted to support them. As only the IOT2040 variants have the Exar chip on board, matching on their board name is enough. In the future there will be no other devices with the "SIMATIC IOT2000" DMI board name but different hardware. Signed-off-by: Su Bao Cheng <baocheng.su@siemens.com> Reviewed-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-04-04tty: fix up a few remaining files without SPDX identifiersGreg Kroah-Hartman1-0/+1
There were a few straggling files under drivers/tty/ that did not have any SPDX identifier either because they entered the tree recently, or they somehow missed the mass-tagging of commit b24413180f56 ("License cleanup: add SPDX GPL-2.0 license identifier to files with no license") This commit follows the same rule as b24413180f56 ("License cleanup: add SPDX GPL-2.0 license identifier to files with no license") where files without any specified license in them fall under GPL-2.0 as the correct license for the individual file. Add that identifier to these remaining files so that we don't have to guess at the license of them in the future. Cc: Jiri Slaby <jslaby@suse.com> Cc: "David S. Miller" <davem@davemloft.net> Reviewed-by: Mukesh Ojha <mojha@codeaurora.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-04-04tty: add SPDX identifiers to Kconfig and MakefilesGreg Kroah-Hartman1-0/+1
There were a few Kconfig and Makefiles under drivers/tty/ that were missing a SPDX identifier. Fix that up so that automated tools can properly classify all kernel source files. Cc: Jiri Slaby <jslaby@suse.com> Cc: Jiri Kosina <jikos@kernel.org> Cc: Rob Herring <robh@kernel.org> Acked-by: David Sterba <dsterba@suse.com> Reviewed-by: Mukesh Ojha <mojha@codeaurora.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-03-27serial: 8250_fintek: Make fintek_8250_set_termios staticYueHaibing1-2/+3
Fix sparse warning: drivers/tty/serial/8250/8250_fintek.c:306:6: warning: symbol 'fintek_8250_set_termios' was not declared. Should it be static? Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-03-21dmaengine: idma64: Use actual device for DMA transfersAndy Shevchenko1-2/+2
Intel IOMMU, when enabled, tries to find the domain of the device, assuming it's a PCI one, during DMA operations, such as mapping or unmapping. Since we are splitting the actual PCI device to couple of children via MFD framework (see drivers/mfd/intel-lpss.c for details), the DMA device appears to be a platform one, and thus not an actual one that performs DMA. In a such situation IOMMU can't find or allocate a proper domain for its operations. As a result, all DMA operations are failed. In order to fix this, supply parent of the platform device to the DMA engine framework and fix filter functions accordingly. We may rely on the fact that parent is a real PCI device, because no other configuration is present in the wild. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Mark Brown <broonie@kernel.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> [for tty parts] Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-03-14Merge tag 'dmaengine-5.1-rc1' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds1-1/+0
Pull dmaengine updates from Vinod Koul: - dmatest updates for modularizing common struct and code - remove SG support for VDMA xilinx IP and updates to driver - Update to dw driver to support Intel iDMA controllers multi-block support - tegra updates for proper reporting of residue - Add Snow Ridge ioatdma device id and support for IOATDMA v3.4 - struct_size() usage and useless LIST_HEAD cleanups in subsystem. - qDMA controller driver for Layerscape SoCs - stm32-dma PM Runtime support - And usual updates to imx-sdma, sprd, Documentation, fsl-edma, bcm2835, qcom_hidma etc * tag 'dmaengine-5.1-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (81 commits) dmaengine: imx-sdma: fix consistent dma test failures dmaengine: imx-sdma: add a test for imx8mq multi sdma devices dmaengine: imx-sdma: add clock ratio 1:1 check dmaengine: dmatest: move test data alloc & free into functions dmaengine: dmatest: add short-hand `buf_size` var in dmatest_func() dmaengine: dmatest: wrap src & dst data into a struct dmaengine: ioatdma: support latency tolerance report (LTR) for v3.4 dmaengine: ioatdma: add descriptor pre-fetch support for v3.4 dmaengine: ioatdma: disable DCA enabling on IOATDMA v3.4 dmaengine: ioatdma: Add Snow Ridge ioatdma device id dmaengine: sprd: Change channel id to slave id for DMA cell specifier dt-bindings: dmaengine: sprd: Change channel id to slave id for DMA cell specifier dmaengine: mv_xor: Use correct device for DMA API Documentation :dmaengine: clarify DMA desc. pointer after submission Documentation: dmaengine: fix dmatest.rst warning dmaengine: k3dma: Add support for dma-channel-mask dmaengine: k3dma: Delete axi_config dmaengine: k3dma: Upgrade k3dma driver to support hisi_asp_dma hardware Documentation: bindings: dma: Add binding for dma-channel-mask Documentation: bindings: k3dma: Extend the k3dma driver binding to support hisi-asp ...
2019-02-26serial: 8250_of: assume reg-shift of 2 for mrvl,mmp-uartLubomir Rintel1-0/+4
There are two other drivers that bind to mrvl,mmp-uart and both of them assume register shift of 2 bits. There are device trees that lack the property and rely on that assumption. If this driver wins the race to bind to those devices, it should behave the same as the older deprecated driver. Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-02-26serial: 8250_pxa: honor the port number from devicetreeLubomir Rintel1-0/+4
Like the other OF-enabled drivers, use the port number from the firmware if the devicetree specifies an alias: aliases { ... serial2 = &uart2; /* Should be ttyS2 */ } This is how the deprecated pxa.c driver behaved, switching to 8250_pxa messes up the numbering. Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-02-13serial: 8250_pci: Have ACCES cards that use the four port Pericom PI7C9X7954 ↵Jay Dolan1-0/+105
chip use the pci_pericom_setup() The four port Pericom chips have the fourth port at the wrong address. Make use of quirk to fix it. Fixes: c8d192428f52 ("serial: 8250: added acces i/o products quad and octal serial cards") Cc: stable <stable@vger.kernel.org> Signed-off-by: Jay Dolan <jay.dolan@accesio.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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