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* Merge master.kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvbLinus Torvalds2006-06-2755-49/+13314
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvb: (26 commits) V4L/DVB (4263): Fix warning when compiling on 64 bit machines V4L/DVB (4261): Included required header for in-kernel compilation V4L/DVB (4260): Stradis.c: make 2 functions static V4L/DVB (4259): Pass an explicit log prefix to cx2341x_log_status V4L/DVB (4257): Fix 64-bit compile warnings. V4L/DVB (4255): Tda9887 default TOP value is 0x10 V4L/DVB (4254): Remove obsoleted tuner_debug option. V4L/DVB (4253): IVTV VBI format description too long. V4L/DVB (4252): Remove duplicate 'tda9887' in info messages. V4L/DVB (4245): Reduce the amount of pvrusb2-sourced noise going into the system log V4L/DVB (4244): Implement use of cx2341x module in pvrusb2 driver V4L/DVB (4243): Exploit new V4L control features in pvrusb2 V4L/DVB (4242): Don't suspend encoder when changing its attributes (in pvrusb2) V4L/DVB (4241): Fix faulty encoder error recovery in pvrusb2 V4L/DVB (4240): Various V4L control enhancements in pvrusb2 V4L/DVB (4239): Handle boolean controls in pvrusb2 V4L/DVB (4238): Make sure flags field is initialized when quering a control in pvrusb2 V4L/DVB (4237): Move LOG_STATUS bracketing to a different part of the pvrusb2 driver V4L/DVB (4236): Rearrange things in pvrusb2 driver in preparation for using cx2341x module V4L/DVB (4235): Increase the maximum number of controls that pvrusb2-sysfs.c can handle. ...
| * V4L/DVB (4263): Fix warning when compiling on 64 bit machinesMauro Carvalho Chehab2006-06-271-3/+3
| | | | | | | | Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4261): Included required header for in-kernel compilationMauro Carvalho Chehab2006-06-271-0/+1
| | | | | | | | Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4260): Stradis.c: make 2 functions staticAdrian Bunk2006-06-271-2/+2
| | | | | | | | | | | | | | This patch makes two needlessly global functions static. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4259): Pass an explicit log prefix to cx2341x_log_statusHans Verkuil2006-06-273-21/+26
| | | | | | | | | | | | | | | | A card number is not unique enough. Instead, let the caller specify the prefix of the status messages. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4257): Fix 64-bit compile warnings.Hans Verkuil2006-06-272-3/+3
| | | | | | | | | | Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4255): Tda9887 default TOP value is 0x10Hans Verkuil2006-06-271-14/+13
| | | | | | | | | | | | | | | | | | For most tuners the default TOP value is 0x10, regardless of TV norm. So revert earlier change that sets the TOP value to 0x14 for PAL/SECAM. This is incorrect. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4254): Remove obsoleted tuner_debug option.Hans Verkuil2006-06-271-8/+0
| | | | | | | | | | Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4253): IVTV VBI format description too long.Hans Verkuil2006-06-271-1/+1
| | | | | | | | | | | | | | Format description was cut off. It's been shortened. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4252): Remove duplicate 'tda9887' in info messages.Hans Verkuil2006-06-271-2/+2
| | | | | | | | | | | | | | | | | | Remove the duplicate '(tda9887)' in these messages: tda9887 8-0043 (tda9887): tda988[5/6/7] found @ 0x43 (tuner) The same string is already printed as the prefix in this line. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4245): Reduce the amount of pvrusb2-sourced noise going into the ↵Mike Isely2006-06-273-14/+6
| | | | | | | | | | | | | | system log Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4244): Implement use of cx2341x module in pvrusb2 driverMike Isely2006-06-276-295/+304
| | | | | | | | | | Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4243): Exploit new V4L control features in pvrusb2Mike Isely2006-06-272-2/+76
| | | | | | | | | | Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4242): Don't suspend encoder when changing its attributes (in pvrusb2)Mike Isely2006-06-271-11/+1
| | | | | | | | | | Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4241): Fix faulty encoder error recovery in pvrusb2Mike Isely2006-06-271-3/+4
| | | | | | | | | | Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4240): Various V4L control enhancements in pvrusb2Mike Isely2006-06-276-3/+71
| | | | | | | | | | Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4239): Handle boolean controls in pvrusb2Mike Isely2006-06-275-12/+83
| | | | | | | | | | Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4238): Make sure flags field is initialized when quering a control ↵Mike Isely2006-06-271-0/+1
| | | | | | | | | | | | | | in pvrusb2 Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4237): Move LOG_STATUS bracketing to a different part of the ↵Mike Isely2006-06-272-4/+3
| | | | | | | | | | | | | | pvrusb2 driver Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4236): Rearrange things in pvrusb2 driver in preparation for using ↵Mike Isely2006-06-273-70/+83
| | | | | | | | | | | | | | cx2341x module Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4235): Increase the maximum number of controls that pvrusb2-sysfs.c ↵Mike Isely2006-06-271-0/+52
| | | | | | | | | | | | | | can handle. Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4234): Clean up long-standing video format handling mess in ↵Mike Isely2006-06-271-24/+11
| | | | | | | | | | | | | | pvrusb2-v4l2.c Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4233): Don't print empty enum values in pvrusb2-sysfs.cMike Isely2006-06-271-0/+1
| | | | | | | | | | Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4232): Rearrange things in pvrusb2-encoder in preparation for use ↵Mike Isely2006-06-271-86/+138
| | | | | | | | | | | | | | of cx2341x module Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4231): Include some extra headers that we need.Mike Isely2006-06-272-1/+3
| | | | | | | | | | Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4229): Cx88-blackbird: implement VIDIOC_LOG_STATUSMichael Krufky2006-06-271-0/+8
| | | | | | | | | | | | | | | | implemented VIDIOC_LOG_STATUS in the cx88-blackbird driver to show the status of i2c clients and the cx23416 mpeg encoder. Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4228a): pvrusb2 to kernel 2.6.18Mike Isely2006-06-2748-0/+12948
| | | | | | | | | | | | | | | | | | | | | | | | | | Implement V4L2 driver for the Hauppauge PVR USB2 TV tuner. The Hauppauge PVR USB2 is a USB connected TV tuner with an embedded cx23416 hardware MPEG2 encoder. There are two major variants of this device; this driver handles both. Any V4L2 application which understands MPEG2 video stream data should be able to work with this device. Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* | [PATCH] i4l fix DLE masking in isdn_tty_try_readKarsten Keil2006-06-271-1/+1
| | | | | | | | | | | | | | | | | | DLE masking was non-functional since the new tty handling. Found by Peter Evertz <leo2@pec.homeip.net> Signed-off-by: Karsten Keil <kkeil@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] drivers/message/i2o/iop.c: unexport i2o_msg_nop()Adrian Bunk2006-06-271-1/+0
| | | | | | | | | | | | | | | | | | It's available in a header as a static inline - there's no need to export it. Signed-off-by: Adrian Bunk <bunk@stusta.de> Cc: Markus Lidel <Markus.Lidel@shadowconnect.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] drivers/char/ipmi/ipmi_msghandler.c: make proc_ipmi_root staticAdrian Bunk2006-06-271-2/+1
| | | | | | | | | | | | | | | | | | | | | | Make struct proc_ipmi_root static. Besides this, tremove removes an unused #ifdef CONFIG_PROC_FS from include/linux/ipmi.h. Acked-by: Corey Minyard <minyard@acm.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] Remove redundant NULL checks before [kv]free - in drivers/Jesper Juhl2006-06-278-38/+19
| | | | | | | | | | | | | | | | | | Remove redundant NULL chck before kfree + tiny CodingStyle cleanup for drivers/ Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] sched: mc/smt power savings sched policySiddha, Suresh B2006-06-271-1/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sysfs entries 'sched_mc_power_savings' and 'sched_smt_power_savings' in /sys/devices/system/cpu/ control the MC/SMT power savings policy for the scheduler. Based on the values (1-enable, 0-disable) for these controls, sched groups cpu power will be determined for different domains. When power savings policy is enabled and under light load conditions, scheduler will minimize the physical packages/cpu cores carrying the load and thus conserving power(with a perf impact based on the workload characteristics... see OLS 2005 CMP kernel scheduler paper for more details..) Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Con Kolivas <kernel@kolivas.org> Cc: "Chen, Kenneth W" <kenneth.w.chen@intel.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] chardev: GPIO for SCx200 & PC-8736x: add proper Kconfig, Makefile ↵Jim Cromie2006-06-272-1/+26
| | | | | | | | | | | | | | | | | | | | | | entries Replace the temp makefile hacks with proper CONFIG entries, which are also added to Kconfig. Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] chardev: GPIO for SCx200 & PC-8736x: display pin values in/out in ↵Jim Cromie2006-06-271-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | gpio_dump Add current pin settings to gpio_dump() output. This adds the last 'word' to the syslog lines, which displays the input and output values that the pin is set to. pc8736x_gpio.0: io00: 0x0044 TS OD PUE EDGE LO DEBOUNCE io:1/1 The 2 values may differ for a number of reasons: 1- the pin output circuitry is diaabled, (as the above 'TS' indicates) 2- it needs a pullup resistor to drive the attached circuit, 3- the external circuit needs a pullup so the open-drain has something to pull-down 4- the pin is wired to Vcc or Ground It might be appropriate to add a WARN for 2,3,4, since they could damage the chip and/or circuit, esp if misconfig goes unnoticed. Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] gpio-patchset-fixups: include linux/io.hJim Cromie2006-06-271-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Hmm. Im somewhat ambivalent about this patch, since with it, driver wont build for vanilla 17 or older. Its also only 1/2 of your suggestion - when I tried it, I was building against vanilla 17, and asm/uaccess.h cause compilation failure. Looking back, Im perplexed as to why linux/io.h didnt cause same failure ?!? use linux/io.h rather than asm/io.h Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] chardev: GPIO for SCx200 & PC-8736x: replace spinlocks w mutexesJim Cromie2006-06-271-4/+4
| | | | | | | | | | | | | | | | | | | | Replace spinlocks guarding gpio config ops with mutexes. This is a me-too patch, and is justifiable insofar as mutexes have stricter semantics and better debugging support, so are preferred where they are applicable. Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] chardev: GPIO for SCx200 & PC-8736x: fix gpio_current, use shadow regsJim Cromie2006-06-271-4/+23
| | | | | | | | | | | | | | | | | | | | | | Add a working gpio_current() to pc8736x_gpio.c (the previous implementation just threw a dev_warn), and fix gpio_change() to use gpio_current() rather than the incorrect (and temporary) gpio_get(). Initialize shadow-regs so this all works. Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] chardev: GPIO for SCx200 & PC-8736x: use dev_dbg in common moduleJim Cromie2006-06-273-30/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use of dev_dbg() and friends is considered good practice. dev_dbg() needs a struct device *devp, but nsc_gpio is only a helper module, so it doesnt have/need its own. To provide devp to the user-modules (scx200 & pc8736x _gpio), we add it to the vtable, and set it during init. Also squeeze nsc_gpio_dump()'s format a little. [ 199.259879] pc8736x_gpio.0: io09: 0x0044 TS OD PUE EDGE LO DEBOUNCE Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] chardev: GPIO for SCx200 & PC-8736x: add platform_device for use w ↵Jim Cromie2006-06-271-38/+64
| | | | | | | | | | | | | | | | | | | | | | | | | | | | dev_dbg Adds platform-device to (just introduced) driver, and uses it to replace many printks with dev_dbg() etc. This could trivially be merged into previous patch, but this way matches better with the corresponding patch that does the same change to scx200_gpio. Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] chardev: GPIO for SCx200 & PC-8736x: add new pc8736x_gpio moduleJim Cromie2006-06-273-2/+297
| | | | | | | | | | | | | | | | | | | | Add the brand new pc8736x_gpio driver. This is mostly based upon scx200_gpio.c, but the platform_dev is treated separately, since its fairly big too. Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] chardev: GPIO for SCx200 & PC-8736x: migrate gpio_dump to common moduleJim Cromie2006-06-272-3/+17
| | | | | | | | | | | | | | | | | | | | Since the meaning of config-bits is the same for scx200 and pc8736x _gpios, we can share a function to deliver this to user. Since it is called via the vtable, its also completely replaceable. For now, we keep using printk... Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] chardev: GPIO for SCx200 & PC-8736x: migrate file-ops to common moduleJim Cromie2006-06-272-90/+95
| | | | | | | | | | | | | | | | | | | | | | Now that the read(), write() file-ops are dispatching gpio-ops via the vtable, they are generic, and can be moved 'verbatim' to the nsc_gpio common-support module. After the move, various symbols are renamed to update 'scx200_' to 'nsc_', and headers are adjusted accordingly. Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] chardev: GPIO for SCx200 & PC-8736x: add empty common-moduleJim Cromie2006-06-272-1/+46
| | | | | | | | | | | | | | | | | | Add the nsc_gpio common-support module as an empty shell. Next patch starts the migration of the common gpio support routines. Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] chardev: GPIO for SCx200 & PC-8736x: dispatch via vtableJim Cromie2006-06-271-10/+14
| | | | | | | | | | | | | | | | Now actually call the gpio operations thru the vtable. Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] chardev: GPIO for SCx200 & PC-8736x: add gpio-ops vtableJim Cromie2006-06-271-0/+13
| | | | | | | | | | | | | | | | Abstract the gpio operations into a new nsc_gpio_ops vtable. Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] chardev: GPIO for SCx200 & PC-8736x: add 'v' command to device-fileJim Cromie2006-06-271-0/+16
| | | | | | | | | | | | | | | | | | | | | | | | Add a new driver command: 'v' which calls gpio_dump() on the pin. The output goes to the log, like all other INFO messages in the original driver. Giving the user control over the feedback they 'need' is construed to be a user-friendly feature, and allows us (later) to dial down many INFO messages to DEBUG log-level. Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] chardev: GPIO for SCx200 & PC-8736x: add platforn_device for use w ↵Jim Cromie2006-06-271-17/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | dev_dbg Add a platform-device to scx200_gpio, and use its struct device dev member (ie: devp) in dev_dbg() once. There are 2 alternatives here (Im soliciting guidance/commentary): - use isa_device, if/when its added to the kernel. - alter scx200.c to EXPORT_GPL its private devp so that both scx200_gpio, and the (to be added) nsc_gpio module can use it. Since the available devp is in 'grandparent', this seems like too much 'action at a distance'. Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] chardev: GPIO for SCx200 & PC-8736x: modernize driver init to 2.6 apiJim Cromie2006-06-271-12/+41
| | | | | | | | | | | | | | | | | | | | Adopt many modern 2.6 coding practices, ala LDD3, chapter 3. Changes are limited to initialization calls from module init, ie: cdev_init, cdev_add, *_chrdev_region, mkdev. Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] chardev: GPIO for SCx200 & PC-8736x: whitespace pre-cleanJim Cromie2006-06-271-17/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | GPIO SUPPORT FOR SCx200 & PC8736x The patch-set reworks the 2.4 vintage scx200_gpio driver for modern 2.6, and refactors GPIO support to reuse it in a new driver for the GPIO on PC-8736x chips. Its handy for the Soekris.com net-4801, which has both chips. These patches have been seen recently on Kernel-Mentors, and then Kernel-Newbies ML, where Jesper Juhl kindly reviewed it. His feedback has been incorporated. Thanks Jesper ! Its also gone to soekris-tech@soekris.com for possible testing by linux folks, I've gotten 1 promise so far. Theyre mostly BSD folk over there, but we'll see.. Device-file & Sysfs The driver preserves the existing device-file interface, including the write/cmd set, but adds v to 'view' the pin-settings & configs by inducing, via gpio_dump(), a dev_info() call. Its a fairly crappy way to get status, but it sticks to the syslog approach, conservatively. Allowing users to voluntarily trigger logging is good, it gives them a familiar way to confirm their app's control & use of the pins, and I've thus reduced the pin-mode-updates from dev_info to dev_dbg. I've recently bolted on a proto sysfs interface for both new drivers. Im not including those patches here; they (the patch + doc-pre-patch) are still quite raw (and unreviewed on KNML), and since they 'invent' a convention for GPIO, a proper vetting is needed. Since this patchset is much bigger than my previous ones, Id like to keep things simpler, and address it 1st, before bolting on more stuff. The driver-split The Geode CPU and the PC-87366 Super-IO chip have GPIO units which share a common pin-architecture (same pin features, with same bits controlling), but with different addressing mechanics and port organizations. The vintage driver expresses the pin capabilities with pin-mode commands [OoPpTt],etc that change the pin configurations, and since the 2 chips share pin-arch, we can reuse the read(), write() commands, once the implementation is suitably adjusted. The patchset adds a vtable: struct nsc_gpio_ops, to abstract the existing gpio operations, then adjusts fileops.write() code to invoke operations via that vtable. Driver specific open()s set private_data to the vtable so its available for use by write(). The vtable gets the gpio_dump() too, since its user-friendly, and (could be construed as) part of the current device-file interface. To support use of dev_dbg() in write() & _dump(), the vtable gets a dev ptr too, set by both scx200 & pc8736x _gpio drivers. heres how the pins are presented in syslog: [ 1890.176223] scx200_gpio.0: io00: 0x0044 TS OD PUE EDGE LO DEBOUNCE [ 1890.287223] scx200_gpio.0: io01: 0x0003 OE PP PUD EDGE LO nsc_gpio.c: new file is new home of several file-ops methods, which are modified to get their vtable from filp->private_data, and use it where needed. scx200_gpio.c: keeps some of its existing gpio routines, but now wires them up via the vtable (they're invoked by nsc_gpio.c:nsc_gpio_write() thru this vtable). A driver-spcific open() initializes filp->private_data with the vtable. Once the split is clean, and the scx200_gpio driver is working, we copy and modify the function and variable names, and rework the access-method bodies for the different addressing scheme. Heres a working overview of the patchset: # series file for GPIO # Spring Cleaning gpio-scx/patch.preclean # scripts/Lindent fixes, editor-ctrl comments # API Modernization gpio-scx/patch.api26 # what I learned from LDD3 gpio-scx/patch.platform-dev-2 # get pdev, support for dev_dbg() gpio-scx/patch.unsigned-minor # fix to match std practice # Debuggability gpio-scx/patch.dump-diet # shrink gpio_dump() gpio-scx/patch.viewpins # add new 'command' to call dump() gpio-scx/patch.init-refactor # pull shadow-register init to sub # Access-Abstraction (add vtable) gpio-scx/patch.access-vtable # introduce nsg_gpio_ops vtable, w dump gpio-scx/patch.vtable-calls # add & use the vtable in scx200_gpio gpio-scx/patch.nscgpio-shell # add empty driver for common-fops # move code under abstraction gpio-scx/patch.migrate-fops # move file-ops methods from scx200_gpio gpio-scx/patch.common-dump # mv scx200.c:scx200_gpio_dump() to nsc_gpio.c gpio-scx/patch.add-pc8736x-gpio # add new driver, like old, w chip adapt # gpio-scx/patch.add-DEBUG # enable all dev_dbg()s # Cleanups # finish printk -> dev_dbg() etc gpio-scx/patch.pdev-pc8736x # new drvr needs pdev too, gpio-scx/patch.devdbg-nscgpio # add device to 'vtable', use in dev_dbg() # gpio-scx/patch.pin-config-view # another 'c' 'command' # gpio-scx/quiet-getset # take out excess dbg stuff (pretty quiet now) gpio-scx/patch.shadow-current # imitate scx200_gpio's shadow regs in pc87* # post KMentors-post patches .. gpio-scx/patch.mutexes # use mutexes for config-locks gpio-scx/patch.viewpins-values # extend dump to obsolete separate 'c' cmd gpio-scx/patch.kconfig # add stuff for kbuild # TBC # combine api26 with pdev, which is just one step. # merge c&v commands to single do-all-fn # delay viewpins, dump-diet should also un-ifdef it too. diff.sys-gpio-rollup-1 This patch: Removed editor format-control comments, and used scripts/Lindent to clean up whitespace, then deleted the bogus chunks :-( Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] cpu hotplug: make cpu_notifier related notifier blocks __cpuinit onlyChandra Seetharaman2006-06-272-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | Make notifier_blocks associated with cpu_notifier as __cpuinitdata. __cpuinitdata makes sure that the data is init time only unless CONFIG_HOTPLUG_CPU is defined. Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Cc: Ashok Raj <ashok.raj@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
generated by cgit v1.1 at 2025-08-13 10:40:53 +0000