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* IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells2006-10-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
* V4L/DVB (4432): Fix Circular dependenciesManu Abraham2006-09-264-9/+24
| | | | | Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4424): Add missing dvb-pll Kconfig infrastructureAndrew de Quincey2006-09-261-7/+7
| | | | | Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4392): Fix dst_ca attachAndrew de Quincey2006-09-264-14/+7
| | | | | | | | | Move the call to dst_attach into the dst_attach function to eliminate problems caused with dvb_attach. Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net> Acked-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4391): Refactor dvb_detach calls into a single dvb_frontend_detach ↵Andrew de Quincey2006-09-261-6/+2
| | | | | | | | | | | function. Remove buggy dvb_detach() macro and replace with unified dvb_frontend_detach() call. Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net> Acked-by: Trent Piepho <xyzzy@speakeasy.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4387): Add Kconfig infrastructure for dvb_attachAndrew de Quincey2006-09-261-0/+2
| | | | | | | | | | Allow it to be en/disabled Disable it in < 2.6.17 due to symbol_xxx() bug Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net> Acked-by: Michael Krufky <mkrufky@linuxtv.org> Acked-by: Trent Piepho <xyzzy@speakeasy.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4386): Convert DVB devices to use dvb_attach()Andrew de Quincey2006-09-264-19/+27
| | | | | | | | | | Only devices using > 1 frontend were ported; ones which did not are left using static binding. Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net> Acked-by: Michael Krufky <mkrufky@linuxtv.org> Acked-by: Trent Piepho <xyzzy@speakeasy.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4608b): i2c deps fix on DVBAndrew de Quincey2006-09-101-0/+1
| | | | | | | Several DVB modules depends on I2C Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4431): Add several error checks to dstYeasah Pell2006-08-081-31/+27
| | | | | | Signed-off-by: Yeasah Pell <yeasah@shwide.com> Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* [PATCH] irq-flags: media: Use the new IRQF_ constantsThomas Gleixner2006-07-021-1/+1
| | | | | | | | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Fixes some sync issues between V4L/DVB development and GITMauro Carvalho Chehab2006-06-251-198/+7
| | | | | | | Some changes didn't went ok to -git, probably due to changes at merging patches. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4186): Add support for the DNTV Live! mini DVB-T card.Cameron Hutchinson2006-06-251-1/+3
| | | | | Signed-off-by: Cameron Hutchinson <camh@xdna.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4185): Conditionally enable 5 byte diseqc commandsYeasah Pell2006-06-251-2/+5
| | | | | | Signed-off-by: Yeasah Pell <yeasah@schwide.net> Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4184): Static variables mustn't be EXPORT_SYMBOL 'edAdrian Bunk2006-06-251-2/+0
| | | | | | Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4182): Comment out MMI functions for nowManu Abraham2006-06-251-0/+94
| | | | | Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4181): Fix CA Info and Application InfoHenrik Sjoberg2006-06-251-4/+92
| | | | | | Signed-off-by: Henrik Sjoberg <hsjo@epact.se> Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4180): Initial go at MMIManu Abraham2006-06-251-0/+95
| | | | | Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4179): VLF fixes for DCTManu Abraham2006-06-252-18/+23
| | | | | Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4178): Replace NEWTUNE with TS188Manu Abraham2006-06-252-14/+14
| | | | | Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4177): DCTNEW and ATSC fixesManu Abraham2006-06-252-30/+63
| | | | | Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4176): Bug-fix: Fix memory overflowSigmund Augdal Helberg2006-06-251-0/+5
| | | | | | | | | Do not overflow kernel memory when more than BT878_MAX devices are present. Signed-off-by: Sigmund Augdal Helberg <sigmund@snap.tv> Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4175): Fix a bug in tuner detectionManu Abraham2006-06-251-4/+11
| | | | | Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4174): Distinguish between STV0299 and MB86A15 based NIM'sManu Abraham2006-06-251-9/+72
| | | | | Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4173): Dprintk macro beautificationManu Abraham2006-06-251-14/+18
| | | | | Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4172): Remove spurious newlines in dprintk's. Add dst(card-num) as ↵Sigmund Augdal Helberg2006-06-251-22/+24
| | | | | | | | prefix in dprintk Signed-off-by: Sigmund Augdal Helberg <sigmund@snap.tv> Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4171): Fix Daughterboard detectionManu Abraham2006-06-252-28/+6
| | | | | Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4170): ATSC typecheck bugfixBryan Scott2006-06-251-3/+3
| | | | | | Signed-off-by: Bryan Scott <sirbryan@gmail.com> Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4169): Add more Firmware and Tuner namesManu Abraham2006-06-252-15/+107
| | | | | Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4168): ATSC tuner doesn't have variable length fieldManu Abraham2006-06-252-4/+11
| | | | | Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4167): Add Board NamesManu Abraham2006-06-252-5/+32
| | | | | Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4166): Fix string lengthManu Abraham2006-06-251-2/+2
| | | | | Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4165): Add in tuner namesManu Abraham2006-06-252-2/+37
| | | | | Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4164): Add DVB-S specific demod namesManu Abraham2006-06-252-16/+37
| | | | | Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4163): Initialize ATSC frontendManu Abraham2006-06-251-0/+4
| | | | | Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4162): Explicit defining of type is not necessary with MULTI_FEManu Abraham2006-06-251-20/+26
| | | | | Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4161): Utilize the device specific algorithm callbacksManu Abraham2006-06-251-0/+4
| | | | | Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4159): Implement tuning algorithm as a module parameterManu Abraham2006-06-251-5/+47
| | | | | Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4158): Make ASIC RESET ConditionalManu Abraham2006-06-251-7/+7
| | | | | Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4157): Add support for VP-3250 ATSC cardManu Abraham2006-06-251-2/+17
| | | | | Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4156): Add basic ATSC support to DSTManu Abraham2006-06-251-1/+30
| | | | | Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4028): Change dvb_frontend_ops to be a real field instead of a ↵Patrick Boettcher2006-06-253-27/+23
| | | | | | | | | | | | | | | | | | pointer field inside dvb_frontend The dvb_frontend_ops is a pointer inside dvb_frontend. That's why every demod-driver is having a field of dvb_frontend_ops in its private-state-struct and using the reference for filling the pointer-field in dvb_frontend. - It saves at least two lines of code per demod-driver, - reduces object size (one less dereference per frontend_ops-access), - be coherent with dvb_tuner_ops, - makes it a little bit easier for newbies to understand how it works and - avoids stupid mistakes because you would have to copy the dvb_frontend_ops always, before you could assign the static pointer directly, which was dangerous. Signed-off-by: Patrick Boettcher <pb@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (3973a): Return value is ssize_tMauro Carvalho Chehab2006-06-251-1/+1
| | | | | | This patch fix a difference between v4l/dvb tree and kernel tree. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (3893): Convert calls from _pllbuf() to _calc_reg()Andrew de Quincey2006-06-251-6/+6
| | | | | | | Johannes Stezenbach suggested this change - definite improvement. Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (3900): Rename fe_lgh06xf.h to lg_h06xf.hMichael Krufky2006-06-251-1/+1
| | | | | Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (3887): Convert bt8xx to refactored tuner codeAndrew de Quincey2006-06-251-27/+44
| | | | | | | | | | | Rename pll calls to appropriate tuner calls. Remove pll functions from demod structures. Hook tuner call into tuner_ops. Attach dvb-pll where possible. Add pll gate control calls where appropriate. Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (3841): Dvb-bt8xx: use fe_lgh06xf.hMichael Krufky2006-06-252-24/+2
| | | | | | | - removed duplicated tuning code for LG TDVS H064F Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (3765): Dvb-bt8xx: add support for DViCO FusionHDTV DVB-T Lite 2nd ↵Michael Krufky2006-06-252-0/+11
| | | | | | | | | | | | | | | revision This patch adds support for the new revision of the DViCO FusionHDTV DVB-T Lite, based on the zl10353 demod instead of mt352. Both mt352 and zl10353 revisions of this card have the same PCI subsystem ID. Acked-by: Chris Pascoe <c.pascoe@itee.uq.edu.au> Ack'd-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (3762): Add sysfs device links to dvb devicesAndrew de Quincey2006-06-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Currently in /sys/class/dvb/dvbX.demuxY/ we have: dev uevent With the patch, we have (for a PCI DVB device): dev device -> ../../../devices/pci0000:00/0000:00:1e.0/0000:03:0d.0 uevent So userspace tools can (finally) work out which physical device a DVB adapter refers to. Previously you had to kinda look through dmesg and hope that it hadn't been dumped out of the buffer. This makes debugging a lot easier if the system has been up for a long time! This is done by adding an extra 'struct device *' parameter to dvb_register_adapter(). It will work with any kind of standard linux 'device'. Additionally, if someone has an embedded system which does things differently, they can simply supply 'NULL' and the behaviour will be as before - the link will simply not appear. Ack'd-by: Manu Abraham <manu@linuxtv.org> Acked-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4040a): Fix the following section warnings:Jean Delvare2006-05-231-3/+3
| | | | | | | | | | reference to .init.text: from .text between 'dvb_bt8xx_probe' (at offset 0x122c) and 'dvb_bt8xx_remove' reference to .init.text: from .text between 'dvb_bt8xx_probe' (at offset 0x1267) and 'dvb_bt8xx_remove' Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (4037): Make the bridge devices that depend on I2C dependant on I2CManu Abraham2006-05-231-1/+1
| | | | | | | Ref: Bugzilla 6179, 6589 Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>