kernel/drivers/tty/serial/of_serial.c, branch linux-4.1.y

serial: of-serial: Remove device_type = "serial" registration

2015-04-28T12:27:38Z

Do not probe all serial drivers by of_serial.c which are using device_type = "serial"; property. Only drivers which have valid compatible strings listed in the driver should be probed. When PORT_UNKNOWN is setup probe will fail anyway. Arnd quotation about driver historical background: "when I wrote that driver initially, the idea was that it would get used as a stub to hook up all other serial drivers but after that, the common code learned to create platform devices from DT" This patch fix the problem with on the system with xilinx_uartps and 16550a where of_serial failed to register for xilinx_uartps and because of irq_dispose_mapping() removed irq_desc. Then when xilinx_uartps was asking for irq with request_irq() EINVAL is returned. Signed-off-by: Michal Simek CC: Acked-by: Arnd Bergmann Signed-off-by: Greg Kroah-Hartman

Merge tag 'devicetree-for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

2015-04-24T15:46:18Z

Pull second batch of devicetree updates from Rob Herring: "As Grant mentioned in the first devicetree pull request, here is the 2nd batch of DT changes for 4.1. The main remaining item here is the endianness bindings and related 8250 driver support. - DT endianness specification bindings - big-endian 8250 serial support - DT overlay unittest updates - various DT doc updates - compile fixes for OF_IRQ=n" * tag 'devicetree-for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: frv: add io{read,write}{16,32}be functions mn10300: add io{read,write}{16,32}be functions Documentation: DT bindings: add doc for Altera's SoCFPGA platform of: base: improve of_get_next_child() kernel-doc Doc: dt: arch_timer: discourage clock-frequency use of: unittest: overlay: Keep track of created overlays of/fdt: fix allocation size for device node path serial: of_serial: Support big-endian register accesses serial: 8250: Add support for big-endian MMIO accesses of: Document {little,big,native}-endian bindings of/fdt: Add endianness helper function for early init code of: Add helper function to check MMIO register endianness of/fdt: Remove "reg" data prints from early_init_dt_scan_memory of: add vendor prefix for Artesyn of: Add dummy of_irq_to_resource_table() for IRQ_OF=n of: OF_IRQ should depend on IRQ_DOMAIN

serial: of_serial: Support big-endian register accesses

2015-04-15T00:35:45Z

If the device node has a "big-endian" property and 32-bit registers, tell the serial driver to use UPIO_MEM32BE instead of UPIO_MEM32. Signed-off-by: Kevin Cernekee Acked-by: Greg Kroah-Hartman Signed-off-by: Rob Herring

serial: of: set port iomem size from devicetree

2015-03-26T21:50:33Z

Make the 8250 driver reserve exactly the mmio region specified in the devicetree. This prevents conflicts between UPIO_AU type UARTs and other devices mapped closer than the default size of 0x1000 (or 0x100 for RT2880). Signed-off-by: Mans Rullgard Signed-off-by: Greg Kroah-Hartman

tty: constify of_device_id array

2015-03-26T21:49:10Z

of_device_id is always used as const. (See driver.of_match_table and open firmware functions) Signed-off-by: Fabian Frederick Acked-by: Peter Korsgaard Acked-by: Timur Tabi Acked-by: Patrice Chotard Signed-off-by: Greg Kroah-Hartman

Revert "tty/serial: of_serial: add DT alias ID handling"

2015-03-07T02:06:51Z

This reverts commit 6d01bb9dc82a60580f749062a48cb47cd5caca07. The exact same code was added in commit 3239fd31d4 (serial: of-serial: fetch line number from DT) a few lined above. Doing this once should be enough. Cc: Rob Herring Signed-off-by: Baruch Siach Signed-off-by: Greg Kroah-Hartman

serial: of-serial: fetch line number from DT

2015-02-03T23:52:13Z

The general agreed way to specify a fixed line number for a serial console is to provide a "serial" alias in the devicetree. Start parsing this property in of_serial. Signed-off-by: Lucas Stach Acked-by: Olof Johansson Signed-off-by: Greg Kroah-Hartman

tty/serial: of_serial: add support for PXA/MMP uarts

2015-02-02T18:11:28Z

Add mrvl,pxa-uart and mrvl,mmp-uart compatible strings for the of_serial driver. These are 8250 variants which have a port type of PORT_XSCALE. There is also the serial driver pxa.c with these compatible strings already. However, it can be replaced with the common 8250 driver. It has some issues like it cannot coexist with the 8250 driver due to tty name collision. That also means adding these compatible strings here should not case a problem. Signed-off-by: Rob Herring Cc: Greg Kroah-Hartman Cc: Jiri Slaby Cc: linux-serial@vger.kernel.org Signed-off-by: Greg Kroah-Hartman

tty/serial: of_serial: add DT alias ID handling

2015-02-02T18:11:27Z

Add support for alias parsing from the DT. This allows for consistent tty numbering. Signed-off-by: Rob Herring Cc: Greg Kroah-Hartman Cc: Jiri Slaby Cc: linux-serial@vger.kernel.org Signed-off-by: Greg Kroah-Hartman

Merge tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

2014-12-15T00:10:09Z

Pull driver core update from Greg KH: "Here's the set of driver core patches for 3.19-rc1. They are dominated by the removal of the .owner field in platform drivers. They touch a lot of files, but they are "simple" changes, just removing a line in a structure. Other than that, a few minor driver core and debugfs changes. There are some ath9k patches coming in through this tree that have been acked by the wireless maintainers as they relied on the debugfs changes. Everything has been in linux-next for a while" * tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits) Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries" fs: debugfs: add forward declaration for struct device type firmware class: Deletion of an unnecessary check before the function call "vunmap" firmware loader: fix hung task warning dump devcoredump: provide a one-way disable function device: Add dev__once variants ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries ath: use seq_file api for ath9k debugfs files debugfs: add helper function to create device related seq_file drivers/base: cacheinfo: remove noisy error boot message Revert "core: platform: add warning if driver has no owner" drivers: base: support cpu cache information interface to userspace via sysfs drivers: base: add cpu_device_create to support per-cpu devices topology: replace custom attribute macros with standard DEVICE_ATTR* cpumask: factor out show_cpumap into separate helper function driver core: Fix unbalanced device reference in drivers_probe driver core: fix race with userland in device_add() sysfs/kernfs: make read requests on pre-alloc files use the buffer. sysfs/kernfs: allow attributes to request write buffer be pre-allocated. fs: sysfs: return EGBIG on write if offset is larger than file size ...