aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/serial/8250.c
Commit message (Collapse)AuthorAgeFilesLines
* [SERIAL] Remove _INLINE_Russell King2006-01-041-4/+4
| | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [SERIAL] Move interrupt-time spinlocking inside serial8250_handle_port()Russell King2006-01-041-7/+8
| | | | | | | | All call sites for serial8250_handle_port() acquired the port spinlock and released it afterwards. This is a needless duplication of code. Move the spinlocking inside serial8250_handle_port(). Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [SERIAL] Use uart_match_port() to find a matching port in find_port()Russell King2006-01-041-3/+1
| | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [Serial] Don't miss modem status changesRussell King2006-01-041-17/+16
| | | | | | | | | | Reading the MSR register on 8250-compatible UARTs results in any modem status interrupts being cleared. To avoid missing any status changes, arrange for get_mctrl() to read the current status via check_modem_status(), which will process any pending state changes for us. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [SERIAL] mark several serial tables constArjan van de Ven2005-11-281-1/+1
| | | | | | | | | This patch marks a few serial data structures const, moving them to .rodata where they won't false-share cachelines with things that get written to. Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [SERIAL] don't disable xscale serial ports after autoconfigLennert Buytenhek2005-11-121-1/+4
| | | | | | | | | | | | | | | | | | xscale-type UARTs have an extra bit (UUE) in the IER register that has to be written as 1 to enable the UART. At the end of autoconfig() in drivers/serial/8250.c, the IER register is unconditionally written as zero, which turns off the UART, and makes any subsequent printch() hang the box. Since other 8250-type UARTs don't have this enable bit and are thus always 'enabled' in this sense, it can't hurt to enable xscale-type serial ports all the time as well. The attached patch changes the autoconfig() exit path to see if the port has an UUE enable bit, and if yes, to write UUE=1 instead of just putting a zero into IER, using the same test as is used at the beginning of serial8250_console_write(). Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [DRIVER MODEL] Convert platform drivers to use struct platform_driverRussell King2005-11-091-15/+16
| | | | | | | | | This allows us to eliminate the casts in the drivers, and eventually remove the use of the device_driver function pointer methods for platform device drivers. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] serial console: touch NMI watchdogAndrew Morton2005-11-071-0/+3
| | | | | | | | Large console spews from IRQ or local_irq_disable() sections can cause the NMI watchdog to go off. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [SERIAL] Support Au1x00 8250 UARTs using the generic 8250 driver.Pantelis Antoniou2005-11-061-3/+70
| | | | | | | | The offsets of the registers are in a different place, and some parts cannot handle a full set of modem control signals. Signed-off-by: Pantelis Antoniou <pantelis@embeddedalley.ocm> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* Create platform_device.h to contain all the platform device details.Russell King2005-10-291-1/+1
| | | | | | | | Convert everyone who uses platform_bus_type to include linux/platform_device.h. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] DRIVER MODEL: Get rid of the obsolete tri-level suspend/resume callbacksRussell King2005-10-281-8/+2
| | | | | | | | | | | | | | | | In PM v1, all devices were called at SUSPEND_DISABLE level. Then all devices were called at SUSPEND_SAVE_STATE level, and finally SUSPEND_POWER_DOWN level. However, with PM v2, to maintain compatibility for platform devices, I arranged for the PM v2 suspend/resume callbacks to call the old PM v1 suspend/resume callbacks three times with each level in order so that existing drivers continued to work. Since this is obsolete infrastructure which is no longer necessary, we can remove it. Here's an (untested) patch to do exactly that. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [SERIAL] Spelling fix in 8250.cRussell King2005-09-091-1/+1
| | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [SERIAL] Use an enum for serial8250 platform device IDsRussell King2005-09-081-1/+1
| | | | | | | | Rather than hard-coding the platform device IDs, enumerate them. We don't particularly care about the actual ID we get, just as long as they're unique. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 2866/1: add i.MX set_mctrl / get_mctrl functionsSascha Hauer2005-08-311-79/+0
| | | | | | | | | | Patch from Sascha Hauer This patch adds support for setting and getting RTS / CTS via set_mtctrl / get_mctrl functions. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [SERIAL] Clean up and fix tty transmission start/stopingRussell King2005-08-311-3/+7
| | | | | | | | | | | | | | | | | | | | | | | The start_tx and stop_tx methods were passed a flag to indicate whether the start/stop was from the tty start/stop callbacks, and some drivers used this flag to decide whether to ask the UART to immediately stop transmission (where the UART supports such a feature.) There are other cases when we wish this to occur - when CTS is lowered, or if we change from soft to hard flow control and CTS is inactive. In these cases, this flag was false, and we would allow the transmitter to drain before stopping. There is really only one case where we want to let the transmitter drain before disabling, and that's when we run out of characters to send. Hence, re-jig the start_tx and stop_tx methods to eliminate this flag, and introduce new functions for the special "disable and allow transmitter to drain" case. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [PATCH] Serial: Fix small CONFIG_SERIAL_8250_NR_UARTSRussell King2005-06-301-1/+2
| | | | | | | | | If CONFIG_SERIAL_8250_NR_UARTS is smaller than the array size in asm/serial.h, we trampled on memory which wasn't ours. Take our big boots away by limiting the number of ports initialised to the smaller of ...NR_UARTS and the array size. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [PATCH] Serial: Split 8250 port table (part 2)Russell King2005-06-291-1/+1
| | | | | | | | | | | | Remove legacy ISA serial ports for Accent, Boca, Fourport, Hub6 and MCA from the architecture specific serial.h include. The only ports which remain in asm-*/serial.h are the platform specific entries. These should really be converted by platform maintainers to use a platform device, such as can be found in arch/arm/mach-footbridge/isa.c Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [PATCH] Serial: Disable OX950 transmitter for flow controlRussell King2005-06-291-12/+16
| | | | | | | | | Disable the transmitter whenever we want to prevent characters being transmitted by flow control. However, if we run out of characters to send and want to only disable the TX interrupt, allow that scenario. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [PATCH] Serial: Adjust serial lockingRussell King2005-06-291-3/+0
| | | | | | | | This patch changes the way serial ports are locked when getting modem status. This change is necessary because we will need to atomically read the modem status and take action depending on the CTS status. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [PATCH] Serial: Split 8250 port tableRussell King2005-06-271-16/+9
| | | | | | | | | | | | | | Add separate files for the different 8250 ISA-based serial boards. Looking across all the various architectures, it seems reasonable that we can key the availability of the configuration options for these beasts to the bus-related symbols (iow, CONFIG_ISA). We also standardise the base baud/uart clock rate for these boards - I'm sure that isn't architecture specific, but is solely dependent on the crystal fitted on the board (which should be the same no matter what type of machine its fitted into.) Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [PATCH] Serial: Eliminate magic numbersRussell King2005-06-241-5/+5
| | | | | | | | Use the existing macros instead. Signed-off-by: Yoichi Yuasa <yuasa@hh.iij4u.or.jp> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [PATCH] Serial: Bugs are not capabilitiesRussell King2005-06-231-4/+4
| | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [PATCH] Serial: Mobility's 16550A ports need a helping handRussell King2005-06-231-0/+31
| | | | | | | | The Mobility 16550A serial ports don't behave the same as standard 16550A ports, and need a helping hand to get them going once the transmitter has drained and been disabled. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [PATCH] Serial: Convert 8250 revision-based bug fixes to bug bitmaskRussell King2005-06-231-10/+13
| | | | | | | | | For some 8250 port types, we used to check the type of the port, and then determine whether the chip revision means the device is buggy. Instead, introduce a bit array, and set the appropriate bit(s) when we discover a buggy device. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* When we detect that a 16550 was in fact part of a NatSemi SuperIO chipDavid Woodhouse2005-05-211-5/+12
| | | | | | | | | | with high-speed mode enabled, we switch it to high-speed mode so that baud_base becomes 921600. However, we also need to multiply the baud divisor by 8 at the same time, in case it's already in use as a console. Signed-off-by: David Woodhouse Acked-by: Tom Rini Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [PATCH] Serial: Add uart_insert_char()Russell King2005-05-091-12/+3
| | | | | | | | Add uart_insert_char(), which handles inserting characters into the flip buffer. This helper function handles the correct semantics for handling overrun in addition to inserting normal characters. Signed-off-by: Russell King <rmk@arm.linux.org.uk>
* [PATCH] make lots of things staticAdrian Bunk2005-05-011-1/+1
| | | | | | | | Another large rollup of various patches from Adrian which make things static where they were needlessly exported. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] serial: fix comments in 8250.cRussell King2005-04-161-3/+11
| | | | | | | | | | | | | | Fix the formatting of some comments in 8250.c, and add a note that the register_serial / unregister_serial shouldn't be used in new code. We do this here in preference to adding to linux/serial.h, since that is used by a number of non-8250 drivers which pretend to be 8250. It is not known whether it would be appropriate to do so. Signed-off-by: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Linux-2.6.12-rc2Linus Torvalds2005-04-161-0/+2632
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
generated by cgit v1.1 at 2024-12-26 20:45:48 +0000