aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/serial
Commit message (Collapse)AuthorAgeFilesLines
* Merge branch 'merge' of ↵Linus Torvalds2009-04-072-7/+22
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (28 commits) powerpc: Fix oops when loading modules powerpc: Wire up preadv and pwritev powerpc/ftrace: Fix printf format warning powerpc/ftrace: Fix #if that should be #ifdef powerpc: Fix ptrace compat wrapper for FPU register access powerpc: Print information about mapping hw irqs to virtual irqs powerpc: Correct dependency of KEXEC powerpc: Disable VSX or current process in giveup_fpu/altivec powerpc/pseries: Enable relay in pseries_defconfig powerpc/pseries: Fix ibm,client-architecture comment powerpc/pseries: Scan for all events in rtasd powerpc/pseries: Add dispatch dispersion statistics powerpc: Clean up some prom printouts powerpc: Print progress of ibm,client-architecture method powerpc: Remove duplicated #include's powerpc/pmac: Fix internal modem IRQ on Wallstreet PowerBook powerpc/wdrtas: Update wdrtas_get_interval to use rtas_data_buf fsl-diu-fb: Pass the proper device for dma mapping routines powerpc/pq2fads: Update device tree for use with device-tree-aware u-boot. cpm_uart: Disable CPM udbg when re-initing CPM uart, even if not the console. ...
| * powerpc/pmac: Fix internal modem IRQ on Wallstreet PowerBookBenjamin Herrenschmidt2009-04-071-0/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The (relatively) new pmac_zilog driver doesn't use the pre-munged IRQ numbers from the macio_dev unlike other macio things, it directly maps it off the OF device-tree. It does that because it can be initialized much earlier than the registration of the macio devices, in order to get a serial console early. Unfortunately, that means that it "misses" some fixups done by the macio layer to work around missing interrupt descriptions in the device-tree of the Wallstreet machines. This patch brings the necessary workaround into the pmac_zilog driver itself to bring it back to working condition. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * Merge branch 'next' of ↵Paul Mackerras2009-04-071-7/+7
| |\ | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/galak/powerpc into merge
| | * cpm_uart: Disable CPM udbg when re-initing CPM uart, even if not the console.Scott Wood2009-04-061-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously, if udbg was using the CPM uart, and the normal CPM uart driver was enabled, but the console was directed elsewhere, udbg would not be stopped prior to initialization. This resulted in udbg hanging forever waiting for the CPM to process a descriptor. Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| | * cpm_uart: Initialize port.dev before it's used.Scott Wood2009-04-061-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | Previously, this caused NULL to sometimes be passed as a device to the DMA code. With recent DMA changes, that now causes a BUG(). Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* | | 8250: Fix warningAlan Cox2009-04-061-1/+2
| | | | | | | | | | | | | | | | | | | | | The 8430 patch was short a const so caused a warning. Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | icom: remove unused variablesBreno Leitao2009-04-061-12/+2
| | | | | | | | | | | | | | | | | | | | | Signed-off-by: Breno Leitao <leitao@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | jsm: Fix the return variable and removing the unused retval.Breno Leitao2009-04-061-4/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As it was, the retval was never returned, so its assignments were silly. Just consolidate everything to rc, and remove the unused retval variable. Signed-off-by: Breno Leitao <leitao@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alan Cox <alan@etchedpixels.co.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | jsm: define init function as __devinitBreno Leitao2009-04-062-3/+3
| | | | | | | | | | | | | | | | | | | | | Signed-off-by: Breno Leitao <leitao@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | ucc: Fix leaky error pathAlan Cox2009-04-061-0/+1
| | | | | | | | | | | | | | | | | | | | | Found by Daniel Marjamäki using cppcheck Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | blackfin: Subtract ANOMALY_05000230 on quotGraf Yang2009-04-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | Fix bug - up arrow key works abnormal for bf561 ezkit board Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | Fix DMA rx ring buffer handlingSonic Zhang2009-04-061-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | Reported-by: Qian Zhang <zhangq@sansitech.com> Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | blackfin: Fix tty compile error in PIO modeSonic Zhang2009-04-061-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes this compile issue: drivers/serial/bfin_5xx.c: In function bfin_serial_rx_chars: drivers/serial/bfin_5xx.c:178: error: struct uart_info has no member named tty Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | blackfin: Use unsigned long for flags with irq functionsMike Frysinger2009-04-061-2/+3
| | | | | | | | | | | | | | | | | | | | | Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | blackfin: BF538/9 serial uart supportMichael Hennerich2009-04-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | Enable third UART on BF538/9 Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | 8250_pci: add support for National Instruments legacy 8420 RS232 boardsWill Page2009-04-061-0/+218
| | | | | | | | | | | | | | | | | | | | | Signed-off-by: Will Page <will.page@ni.com> Signed-off-by: Shawn Bohrer <shawn.bohrer@ni.com> Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | 8250_pci: add support for National Instruments 843x RS232 devicesShawn Bohrer2009-04-061-0/+193
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This implements basic support for all 843x RS232 devices, but does not add DMA support. This means that sustained data transfers at high baud rates may not be possible on multiple ports simultaneously. Signed-off-by: Shawn Bohrer <shawn.bohrer@ni.com> Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | serial: Update PNP IDsMatthew Garrett2009-04-061-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add new Wacom device IDs to the 8250_pnp serial driver, to support autoconfig on some newer tablet PCs. Also add a comment to clarify that the FUJ02E6 device is a custom protocol, not a Wacom tablet. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alan Cox <alan@etchedpixels.co.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | 8250_pnp.c: add another Wacom tabletDanny Kukawka2009-04-061-0/+1
|/ / | | | | | | | | | | | | | | Add another serial Wacom tablet with pnp_id: WACF009. Signed-off-by: Danny Kukawka <dkukawka@suse.de> Signed-off-by: Alan Cox <alan@etchedpixels.co.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'avr32-arch' of ↵Linus Torvalds2009-04-051-1/+8
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6 * 'avr32-arch' of git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6: avr32: add hardware handshake support to atmel_serial avr32: add RTS/CTS/CLK pin selection for the USARTs Add RTC support for Merisc boards avr32: at32ap700x: setup DMA for AC97C in the machine code avr32: at32ap700x: setup DMA for ABDAC in the machine code Add Merisc board support avr32: use gpio_is_valid() to check USBA vbus_pin I/O line atmel-usba-udc: use gpio_is_valid() to check vbus_pin I/O line avr32: fix timing LCD parameters for EVKLCD10X boards avr32: use GPIO line PB15 on EVKLCD10x boards for backlight avr32: configure MCI detect and write protect pins for EVKLCD10x boards avr32: set pin mask to alternative 18 bpp for EVKLCD10x boards avr32: add pin mask for 18-bit color on the LCD controller avr32: fix 15-bit LCDC pin mask to use MSB lines
| * | avr32: add hardware handshake support to atmel_serialPeter Ma2009-04-011-1/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adds Hardware Handshake (aka RTS/CTS flow-control) support to atmel_serial driver, as a termios flag. For this to actually work, the platform code needs to configure the RTS and CTS pins for use by the USART. This has been done for AVR32 as a separate patch. Signed-off-by: Peter Ma <pma@mediamatech.com> Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
* | | Merge branch 'for-linus' of ↵Linus Torvalds2009-04-031-1/+1
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (28 commits) trivial: Update my email address trivial: NULL noise: drivers/mtd/tests/mtd_*test.c trivial: NULL noise: drivers/media/dvb/frontends/drx397xD_fw.h trivial: Fix misspelling of "Celsius". trivial: remove unused variable 'path' in alloc_file() trivial: fix a pdlfush -> pdflush typo in comment trivial: jbd header comment typo fix for JBD_PARANOID_IOFAIL trivial: wusb: Storage class should be before const qualifier trivial: drivers/char/bsr.c: Storage class should be before const qualifier trivial: h8300: Storage class should be before const qualifier trivial: fix where cgroup documentation is not correctly referred to trivial: Give the right path in Documentation example trivial: MTD: remove EOL from MODULE_DESCRIPTION trivial: Fix typo in bio_split()'s documentation trivial: PWM: fix of #endif comment trivial: fix typos/grammar errors in Kconfig texts trivial: Fix misspelling of firmware trivial: cgroups: documentation typo and spelling corrections trivial: Update contact info for Jochen Hein trivial: fix typo "resgister" -> "register" ...
| * | | trivial: fix typos/grammar errors in Kconfig textsMatt LaPlante2009-03-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | | | Merge branch 'for-linus' of ↵Linus Torvalds2009-04-031-1/+1
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: (41 commits) m68knommu: improve compile arch switch settings m68knommu: fix 5407 ColdFire UART vector setup m68knommu: fix 5307 ColdFire UART vector setup m68knommu: fix 5249 ColdFire UART vector setup m68knommu: fix 5249 ColdFire UART setup m68knommu: fix end of uart table marker m68knommu: switch to using generic_handle_irq() m68k: merge the mmu and non-mmu versions of tlbflush.h m68knommu: introduce basic clk infrastructure m68k: merge the mmu and non-mmu versions of module.h m68knommu: add missing interrupt line definition for UART 2 m68k: merge the mmu and non-mmu versions of mmu_context.h m68k: merge the mmu and non-mmu versions of current.h m68k: merge the mmu and non-mmu versions of div64.h m68k: merge the mmu and non-mmu versions of bugs.h m68k: merge the mmu and non-mmu versions of bug.h m68k: use the mmu version of cache.h for m68knommu as well m68k: use the mmu version of bootinfo.h for m68knommu as well m68k: merge the mmu and non-mmu versions of fb.h m68k: merge the mmu and non-mmu versions of segment.h ...
| * | | | m68knommu: Fix support for console port other than ttyS0 on mcf.cLen Sorensen2009-03-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Due to a case of backwards logic, mfc.c always makes the console port be ttyS0 even when you ask for another port. This patch fixes this issue. Only when the requested port is NOT in the range 0 to MAXPORTS-1 do we force it to be treated as if port 0 was requested. Forcing the port to 0 when it is in fact in the range 0 to MAXPORTS is not helpful. Tested with working console on ttyS2 on a 5271evb. Signed-off-by: Len Sorensen <lsorense@csclub.uwaterloo.ca> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
* | | | | serial: fixup /proc/tty/driver/serial after proc_fops conversionAlexey Dobriyan2009-04-011-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "struct tty_driver *" lies in m->private not in v which is SEQ_TOKEN_START which is 1 which is enough to trigger NULL dereference next line: BUG: unable to handle kernel NULL pointer dereference at 000000ad IP: [<c040d689>] uart_proc_show+0xe/0x2b0 Noticed by Linus. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | proc tty: switch serial_core to ->proc_fopsAlexey Dobriyan2009-04-011-40/+36
| |_|_|/ |/| | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | Merge commit 'origin/master' into nextBenjamin Herrenschmidt2009-03-309-34/+37
|\ \ \ \ | | |/ / | |/| | | | | | | | | | | | | | Manual merge of: arch/powerpc/include/asm/elf.h drivers/i2c/busses/i2c-mpc.c
| * | | Merge branch 'origin' into develRussell King2009-03-283-9/+22
| |\ \ \ | | | |/ | | |/| | | | | | | | | Conflicts: sound/soc/pxa/pxa2xx-i2s.c
| | * | Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6Linus Torvalds2009-03-261-2/+2
| | |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (61 commits) Dynamic debug: fix pr_fmt() build error Dynamic debug: allow simple quoting of words dynamic debug: update docs dynamic debug: combine dprintk and dynamic printk sysfs: fix some bin_vm_ops errors kobject: don't block for each kobject_uevent sysfs: only allow one scheduled removal callback per kobj Driver core: Fix device_move() vs. dpm list ordering, v2 Driver core: some cleanup on drivers/base/sys.c Driver core: implement uevent suppress in kobject vcs: hook sysfs devices into object lifetime instead of "binding" driver core: fix passing platform_data driver core: move platform_data into platform_device sysfs: don't block indefinitely for unmapped files. driver core: move knode_bus into private structure driver core: move knode_driver into private structure driver core: move klist_children into private structure driver core: create a private portion of struct device driver core: remove polling for driver_probe_done(v5) sysfs: reference sysfs_dirent from sysfs inodes ... Fixed conflicts in drivers/sh/maple/maple.c manually
| | | * | serial: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-03-241-2/+2
| | | |/ | | | | | | | | | | | | | | | | | | | | Cc: davem@davemloft.net Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
| | * | Merge branch 'master' of ↵Paul Mundt2009-03-104-0/+58
| | |\ \ | | | |/ | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
| | * | sh: Add support for SH7786 CPU subtype.Kuninori Morimoto2009-03-032-5/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds preliminary support for the SH7786 CPU subtype. While this is a dual-core CPU, only UP is supported for now. L2 cache support is likewise not yet implemented. More information on this particular CPU subtype is available at: http://www.renesas.com/fmwk.jsp?cnt=sh7786_root.jsp&fp=/products/mpumcu/superh_family/sh7780_series/sh7786_group/ Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | serial: sh-sci: console drainageMagnus Damm2009-02-271-1/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Modify the serial console code to wait for the transmit FIFO, make sure all bits have been put on the wire before returning. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | Merge branch 'sh/stable-updates'Paul Mundt2009-02-122-1/+7
| | |\ \
| | * \ \ Merge branch 'sh/stable-updates'Paul Mundt2009-01-294-2/+19
| | |\ \ \
| | * | | | sh: use gpiolibMagnus Damm2009-01-271-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch updates the SuperH gpio code to make use of gpiolib. The gpiolib callbacks get() and set() are lockless, but we use our own spinlock for the other operations to make sure hardware register bitfield accesses stay atomic. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | | | [ARM] acorn,ebsa110,footbridge,integrator,sa1100: Convert asm/io.h to linux/io.hRussell King2009-03-253-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | | Merge branch 'devel' of ↵root2009-03-241-1/+1
| |\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6 into devel
| | * | | | | [ARM] pxa: allow reuse of serial driver for pxa168Eric Miao2009-03-231-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Eric Miao <eric.miao@marvell.com>
| * | | | | | Merge branch 'for-rmk' of git://git.pengutronix.de/git/imx/linux-2.6 into develRussell King2009-03-136-2/+60
| |\ \ \ \ \ \ | | |/ / / / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: arch/arm/mach-at91/gpio.c
| | * | | | | [ARM] MXC: remove _clk suffix from clock namesSascha Hauer2009-03-131-1/+1
| | | |_|_|/ | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The context makes it clear already that these are clocks, so there's no need for such a suffix. This patch only changes the clocks actually used in the tree. The remaining clocks are renamed in the subsequent architecture specific patches. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| * | | | | [ARM] pxa: remove machine class specific stuffs from serial driverEric Miao2009-03-091-20/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The only things prevent drivers/serial/pxa.c from being generic enough are: 1. IER_UUE which can be safely replaced by UART_IER_UUE as defined in serial_reg.h for PXA 2. __PREG() and FFUART/BTUART/STUART definitions to decide the UART port name And removed the un-necessary #include of <mach/...> and <asm/...> headers. Signed-off-by: Eric Miao <eric.miao@marvell.com>
* | | | | | Merge commit 'origin/master' into nextBenjamin Herrenschmidt2009-03-115-1/+59
|\ \ \ \ \ \ | | |/ / / / | |/| | | |
| * | | | | Merge branch 'sh/for-2.6.29' of ↵Linus Torvalds2009-02-271-1/+1
| |\ \ \ \ \ | | | |_|_|/ | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 * 'sh/for-2.6.29' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: sh: ap325rxa: Revert ov772x support. serial: sh-sci: fix overrun error handling for SH7785 SCIF. sh: Storage class should be before const qualifier
| | * | | | serial: sh-sci: fix overrun error handling for SH7785 SCIF.Kuninori Morimoto2009-02-121-1/+1
| | |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There was a typo for the overrun bit definition, causing it not to be handled correctly on SH7785, fix it up. Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | | 8250: fix boot hang with serial console when using with Serial Over Lan portMauro Carvalho Chehab2009-02-202-0/+51
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Intel 8257x Ethernet boards have a feature called Serial Over Lan. This feature works by emulating a serial port, and it is detected by kernel as a normal 8250 port. However, this emulation is not perfect, as also noticed on changeset 7500b1f602aad75901774a67a687ee985d85893f. Before this patch, the kernel were trying to check if the serial TX is capable of work using IRQ's. This were done with a code similar this: serial_outp(up, UART_IER, UART_IER_THRI); lsr = serial_in(up, UART_LSR); iir = serial_in(up, UART_IIR); serial_outp(up, UART_IER, 0); if (lsr & UART_LSR_TEMT && iir & UART_IIR_NO_INT) up->bugs |= UART_BUG_TXEN; This works fine for other 8250 ports, but, on 8250-emulated SoL port, the chip is a little lazy to down UART_IIR_NO_INT at UART_IIR register. Due to that, UART_BUG_TXEN is sometimes enabled. However, as TX IRQ keeps working, and the TX polling is now enabled, the driver miss-interprets the IRQ received later, hanging up the machine until a key is pressed at the serial console. This is the 6 version of this patch. Previous versions were trying to introduce a large enough delay between serial_outp and serial_in(up, UART_IIR), but not taking forever. However, the needed delay couldn't be safely determined. At the experimental tests, a delay of 1us solves most of the cases, but still hangs sometimes. Increasing the delay to 5us was better, but still doesn't solve. A very high delay of 50 ms seemed to work every time. However, poking around with delays and pray for it to be enough doesn't seem to be a good approach, even for a quirk. So, instead of playing with random large arbitrary delays, let's just disable UART_BUG_TXEN for all SoL ports. [akpm@linux-foundation.org: fix warnings] Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | | | jsm: additional device supportAdam Lackorzynski2009-02-181-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I have a Digi Neo 8 PCI card (114f:00b1) Serial controller: Digi International Digi Neo 8 (rev 05) that works with the jsm driver after using the following patch. Signed-off-by: Adam Lackorzynski <adam@os.inf.tu-dresden.de> Cc: Scott H Kilau <Scott_Kilau@digi.com> Cc: Wendy Xiong <wendyx@us.ibm.com> Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | | | atmel_serial might lose modem status changeAtsushi Nemoto2009-02-181-0/+4
| |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I found a problem of handling of modem status of atmel_serial driver. With the commit 1ecc26 ("atmel_serial: split the interrupt handler"), handling of modem status signal was splitted into two parts. The atmel_tasklet_func() compares new status with irq_status_prev, but irq_status_prev is not correct if signal status was changed while the port is closed. Here is a sequence to cause problem: 1. Remote side sets CTS (and DSR). 2. Local side close the port. 3. Local side clears RTS and DTR. 4. Remote side clears CTS and DSR. 5. Local side reopen the port. hw_stopped becomes 1. 6. Local side sets RTS and DTR. 7. Remote side sets CTS and DSR. Then CTS change interrupt can be received, but since CTS bit in irq_status_prev and new status is same, uart_handle_cts_change() will not be called (so hw_stopped will not be cleared, i.e. cannot send any data). I suppose irq_status_prev should be initialized at somewhere in open sequence. Itai Levi pointed out that we need to initialize atmel_port->irq_status as well here. His analysis is as follows: > Regarding the second part of the patch (which resets irq_status_prev), > it turns out that both versions of the patch (mine and Atsushi's) > still leave enough room for faulty behavior when opening the port. > > This is because we are not resetting both irq_status_prev and > irq_status in atmel_startup() to CSR, which leads faulty behavior in > the following sequences: > > First case: > 1. closing the port while CTS line = 1 (TX not allowed) > 2. setting CTS line = 0 (TX allowed) > 3. opening the port > 4. transmitting one char > 5. Cannot transmit more chars, although CTS line is 0 > > Second case: > 1. closing the port while CTS line = 0 (TX allowed) > 2. setting CTS line = 1 (TX not allowed) > 3. opening the port > 4. receiving some chars > 5. Now we can transmit, although CTS line is 1 > > This reason for this is that the tasklet is scheduled as a result of > TX or RX interrupts (not a status change!), in steps 4 above. Inside > the tasklet, the atmel_port->irq_status (which holds the value from > the previous session) is compared to atmel_port->irq_status_prev. > Hence, a status-change of the CTS line is faultily detected. > > Both cases were verified on 9260 hardware. [haavard.skinnemoen@atmel.com: folded with patch from Itai Levi] Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Cc: Remy Bohmer <linux@bohmer.net> Cc: Marc Pignat <marc.pignat@hevs.ch> Cc: Itai Levi <itai.levi.devel@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | cpm_uart: fix non-console port startup bugXiaotian Feng2009-03-091-2/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After UART interrupt handler is installed and rx is enabled, if an rx interrupt comes before hardware init, rx->cur will be updated. Then the hardware init will reset BD and make rx->cur out of sync, move the hardware init code before request_irq. Signed-off-by: Xiaotian Feng <xiaotian.feng@windriver.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
generated by cgit v1.1 at 2024-12-27 12:02:40 +0000