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2007-05-26[ARM] 4403/1: Make the PXA-I2C driver work with lockdep validatorEnrico Scholz1-14/+9
Using lockdep validator causes warnings like INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. [<c00241a0>] (dump_stack+0x0/0x14) from [<c00520f8>] (__lock_acquire+0x150/0xc40) [<c0051fa8>] (__lock_acquire+0x0/0xc40) from [<c00530a0>] (lock_acquire+0x5c/0x70) [<c0053044>] (lock_acquire+0x0/0x70) from [<c01d9e44>] (_spin_lock_irq+0x48/0x58) r7:c07e5144 r6:00000000 r5:c015fb94 r4:c07e50b8 [<c01d9dfc>] (_spin_lock_irq+0x0/0x58) from [<c015fb94>] (i2c_pxa_xfer+0x110/0x2e0) r5:c07e50b8 r4:0000001f This is caused by memcpy'ing a statical initialized spin-lock. This patch removes a static pxa_i2c structure which was used only as a source for this memcpy() operation. Instead of, members and the spinlock will be initialized manually. Signed-off-by: Enrico Scholz <enrico.scholz@sigma-chemnitz.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-05-22i2c-s3c2410: Fix build warningArnaud Patard1-1/+2
Fix for the following build warning: CC drivers/i2c/busses/i2c-s3c2410.o drivers/i2c/busses/i2c-s3c2410.c: In function 's3c24xx_i2c_probe': drivers/i2c/busses/i2c-s3c2410.c:839: warning: format '%ld' expects type 'long int', but argument 4 has type 'resource_size_t' Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-22i2c-tiny-usb: Fix truncated adapter nameJean Delvare1-1/+1
Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Till Harbaum <lists@harbaum.org>
2007-05-22i2c: Legacy i2c drivers shouldn't issue ueventsDavid Brownell1-2/+3
Prevent legacy drivers from issuing uevents for device creation/removal, so that userspace can't cause modprobing loops for them. This became a problem for some legacy PC drivers. I can't easily see it becoming an issue with I2C legacy drivers, but consistency-in-paranoia seems likely to be a good thing here. For usable i2c-level driver model uevents, just switch to a new-style driver. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-10Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6Linus Torvalds1-0/+1
* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: [S390] update default configuration. [S390] Kconfig: no wireless on s390. [S390] Kconfig: use common Kconfig files for s390. [S390] Kconfig: common config options for s390. [S390] Kconfig: unwanted menus for s390. [S390] Kconfig: menus with depends on HAS_IOMEM. [S390] Kconfig: refine depends statements. [S390] Avoid compile warning. [S390] qdio: re-add lost perf_stats.tl_runs change in qdio_handle_pci [S390] Avoid sparse warnings. [S390] dasd: Fix modular build. [S390] monreader inlining cleanup. [S390] cio: Make some structures and a function static. [S390] cio: Get rid of _ccw_device_get_device_number(). [S390] fix subsystem removal fallout
2007-05-10i2c-at91: compile fix (IS_ERR)Alexey Dobriyan1-0/+1
CC drivers/i2c/busses/i2c-at91.o drivers/i2c/busses/i2c-at91.c: In function 'at91_i2c_probe': drivers/i2c/busses/i2c-at91.c:213: warning: implicit declaration of function 'IS_ERR' Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: David Brownell <david-b@pacbell.net> Acked-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-10i2c-at91 supports new-style i2c driversDavid Brownell1-1/+5
Make i2c-at91 register as i2c adapter zero (none of these chips seem to have more than one TWI controllers) to let it kick in any board-specific device declarations; also make it hotplug/coldplug. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Jean Delvare <khali@linux-fr.org> Cc: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-10arm: fix i2c-pxa buildRussell King1-1/+1
From commit 7d054817b780e664bed6701b2aa637718e1905b7: > According to the PXA27x developer's manual, we shall do so. We shall also at least compile test our changes. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Jean Delvare <khali@linux-fr.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-10[S390] Kconfig: menus with depends on HAS_IOMEM.Martin Schwidefsky1-0/+1
Add "depends on HAS_IOMEM" to a number of menus to make them disappear for s390 which does not have I/O memory. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-05-09PM: Separate hibernation code from suspend codeRafael J. Wysocki1-1/+1
[ With Johannes Berg <johannes@sipsolutions.net> ] Separate the hibernation (aka suspend to disk code) from the other suspend code. In particular: * Remove the definitions related to hibernation from include/linux/pm.h * Introduce struct hibernation_ops and a new hibernate() function to hibernate the system, defined in include/linux/suspend.h * Separate suspend code in kernel/power/main.c from hibernation-related code in kernel/power/disk.c and kernel/power/user.c (with the help of hibernation_ops) * Switch ACPI (the only user of pm_ops.pm_disk_mode) to hibernation_ops Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Cc: Greg KH <greg@kroah.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: Nigel Cunningham <nigel@nigel.suspend2.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08header cleaning: don't include smp_lock.h when not usedRandy Dunlap2-2/+0
Remove includes of <linux/smp_lock.h> where it is not used/needed. Suggested by Al Viro. Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc, sparc64, and arm (all 59 defconfigs). Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08layered parport code uses parport->devDavid Brownell1-0/+1
Update some of the layered parport_driver code to use parport->dev: - i2c-parport (parent of i2c_adapter) - spi_butterfly (parent of spi_master, allowing cruft removal) - lp (creating class_device) - ppdev (parent of parportN device) - tipar (creating class_device) There are still drivers that should be updated, like some of the input drivers; but they won't be any worse off than they are today. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Greg KH <greg@kroah.com> Cc: Jean Delvare <khali@linux-fr.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-07remove software_suspend()Johannes Berg1-1/+3
Remove software_suspend() and all its users since pm_suspend(PM_SUSPEND_DISK) should be equivalent and there's no point in having two interfaces for the same thing. The patch also changes the valid_state function to return 0 (false) for PM_SUSPEND_DISK when SOFTWARE_SUSPEND is not configured instead of accepting it and having the whole thing fail later. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Acked-by: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-06Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds1-8/+10
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (82 commits) [ARM] Add comments marking in-use ptrace numbers [ARM] Move syscall saving out of the way of utrace [ARM] 4360/1: S3C24XX: regs-udc.h remove unused macro [ARM] 4358/1: S3C24XX: mach-qt2410.c: remove linux/mmc/protocol.h header [ARM] mm 10: allow memory type to be specified with ioremap [ARM] mm 9: add additional device memory types [ARM] mm 8: define mem_types table L1 bit 4 to be for ARMv6 [ARM] iop: add missing parens in macro [ARM] mm 7: remove duplicated __ioremap() prototypes ARM: OMAP: fix OMAP1 mpuio suspend/resume oops ARM: OMAP: MPUIO wake updates ARM: OMAP: speed up gpio irq handling ARM: OMAP: plat-omap changes for 2430 SDP ARM: OMAP: gpio object shrinkage, cleanup ARM: OMAP: /sys/kernel/debug/omap_gpio ARM: OMAP: Implement workaround for GPIO wakeup bug in OMAP2420 silicon ARM: OMAP: Enable 24xx GPIO autoidling [ARM] 4318/2: DSM-G600 Board Support [ARM] 4227/1: minor head.S fixups [ARM] 4328/1: Move i.MX UART regs to driver ...
2007-05-04Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6Linus Torvalds3-3/+0
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6: (59 commits) PCI: Free resource files in error path of pci_create_sysfs_dev_files() pci-quirks: disable MSI on RS400-200 and RS480 PCI hotplug: Use menuconfig objects PCI: ZT5550 CPCI Hotplug driver fix PCI: rpaphp: Remove semaphores PCI: rpaphp: Ensure more pcibios_add/pcibios_remove symmetry PCI: rpaphp: Use pcibios_remove_pci_devices() symmetrically PCI: rpaphp: Document is_php_dn() PCI: rpaphp: Document find_php_slot() PCI: rpaphp: Rename rpaphp_register_pci_slot() to rpaphp_enable_slot() PCI: rpaphp: refactor tail call to rpaphp_register_slot() PCI: rpaphp: remove rpaphp_set_attention_status() PCI: rpaphp: remove print_slot_pci_funcs() PCI: rpaphp: Remove setup_pci_slot() PCI: rpaphp: remove a call that does nothing but a pointer lookup PCI: rpaphp: Remove another wrappered function PCI: rpaphp: Remve another call that is a wrapper PCI: rpaphp: remove a function that does nothing but wrap debug printks PCI: rpaphp: Remove un-needed goto PCI: rpaphp: Fix a memleak; slot->location string was never freed ...
2007-05-02PCI: Cleanup the includes of <linux/pci.h>Jean Delvare3-3/+0
I noticed that many source files include <linux/pci.h> while they do not appear to need it. Here is an attempt to clean it all up. In order to find all possibly affected files, I searched for all files including <linux/pci.h> but without any other occurence of "pci" or "PCI". I removed the include statement from all of these, then I compiled an allmodconfig kernel on both i386 and x86_64 and fixed the false positives manually. My tests covered 66% of the affected files, so there could be false positives remaining. Untested files are: arch/alpha/kernel/err_common.c arch/alpha/kernel/err_ev6.c arch/alpha/kernel/err_ev7.c arch/ia64/sn/kernel/huberror.c arch/ia64/sn/kernel/xpnet.c arch/m68knommu/kernel/dma.c arch/mips/lib/iomap.c arch/powerpc/platforms/pseries/ras.c arch/ppc/8260_io/enet.c arch/ppc/8260_io/fcc_enet.c arch/ppc/8xx_io/enet.c arch/ppc/syslib/ppc4xx_sgdma.c arch/sh64/mach-cayman/iomap.c arch/xtensa/kernel/xtensa_ksyms.c arch/xtensa/platform-iss/setup.c drivers/i2c/busses/i2c-at91.c drivers/i2c/busses/i2c-mpc.c drivers/media/video/saa711x.c drivers/misc/hdpuftrs/hdpu_cpustate.c drivers/misc/hdpuftrs/hdpu_nexus.c drivers/net/au1000_eth.c drivers/net/fec_8xx/fec_main.c drivers/net/fec_8xx/fec_mii.c drivers/net/fs_enet/fs_enet-main.c drivers/net/fs_enet/mac-fcc.c drivers/net/fs_enet/mac-fec.c drivers/net/fs_enet/mac-scc.c drivers/net/fs_enet/mii-bitbang.c drivers/net/fs_enet/mii-fec.c drivers/net/ibm_emac/ibm_emac_core.c drivers/net/lasi_82596.c drivers/parisc/hppb.c drivers/sbus/sbus.c drivers/video/g364fb.c drivers/video/platinumfb.c drivers/video/stifb.c drivers/video/valkyriefb.c include/asm-arm/arch-ixp4xx/dma.h sound/oss/au1550_ac97.c I would welcome test reports for these files. I am fine with removing the untested files from the patch if the general opinion is that these changes aren't safe. The tested part would still be nice to have. Note that this patch depends on another header fixup patch I submitted to LKML yesterday: [PATCH] scatterlist.h needs types.h http://lkml.org/lkml/2007/3/01/141 Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-01i2c-s3c2410: Fix bug in releasing driverBen Dooks1-36/+34
When compiled as a module, the i2c-s3c2410 driver does not free either the IRQ or the i2c adapter it attached to the system. As part of this fix, move to the usual kernel style of freeing items as part of the probe error path making the remove process easier. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c-s3c2410: Fix I2C SDA to SCL setup timeBen Dooks1-6/+20
Fix the setup time for SDA to SCL due to the way the S3C24XX I2C controller works. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c: New i2c-tiny-usb bus driverTill Harbaum3-0/+289
Add a driver for the i2c-tiny-usb interface. This is a simple do-it-yourself USB to I2C interface targeted at experimental and home use. See the i2c-tiny-usb homepage for hardware details: http://www.harbaum.org/till/i2c_tiny_usb Signed-off-by: Till Harbaum <till@harbaum.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c: SPIN_LOCK_UNLOCKED cleanupMilind Arun Choudhary2-2/+2
SPIN_LOCK_UNLOCKED cleanup, use __SPIN_LOCK_UNLOCKED instead. Signed-off-by: Milind Arun Choudhary <milindchoudhary@gmail.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c: Obsolete i2c-ixp2000, i2c-ixp4xx and scx200_i2cJean Delvare1-3/+12
The new generic i2c-gpio driver should be used instead. The obsolete drivers will be removed in September 2007. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Deepak Saxena <dsaxena@plexity.net> Cc: Jordan Crouse <jordan.crouse@amd.com>
2007-05-01i2c: New Simtec I2C bus driverBen Dooks3-0/+199
Platform driver for the Simtec CPLD based simple I2C logic. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c: Bitbanging I2C bus driver using the GPIO APIHaavard Skinnemoen3-0/+224
This is a very simple bitbanging I2C bus driver utilizing the new arch-neutral GPIO API. Useful for chips that don't have a built-in I2C controller, additional I2C busses, or testing purposes. To use, include something similar to the following in the board-specific setup code: #include <linux/i2c-gpio.h> static struct i2c_gpio_platform_data i2c_gpio_data = { .sda_pin = GPIO_PIN_FOO, .scl_pin = GPIO_PIN_BAR, }; static struct platform_device i2c_gpio_device = { .name = "i2c-gpio", .id = 0, .dev = { .platform_data = &i2c_gpio_data, }, }; Register this platform_device, set up the I2C pins as GPIO if required and you're ready to go. This will use default values for udelay and timeout, and will work with GPIO hardware that does not support open drain mode, but allows sensing of the SDA and SCL lines even when they are being driven. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01Use menuconfig objects - I2CJan Engelhardt4-75/+60
Allow the whole I2C menu to be disabled at once without diving into the submenus for deselecting all options (should the user desire so). Signed-off-by: Jan Engelhardt <jengelh@gmx.de> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c: Restore i2c_smbus_read_block_dataJean Delvare1-0/+16
Add back the i2c_smbus_read_block_data helper function, it is needed by the upcoming lm93 hardware monitoring driver and possibly others. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c-pxa: Clean transaction stopJean Delvare1-0/+13
It was reported to me that the i2c-pxa driver was not able to process more that 50 transactions per second. Investigation revealed that the I2C unit was busy for 20 ms after every transaction. The reason seems to be that we forget to clear the STOP and ACKNACK bits at the end of the transaction. According to the PXA27x developer's manual, we shall do so. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Lennert Buytenhek <kernel@wantstofly.org> Cc: Nicolas Pitre <nico@cam.org>
2007-05-01i2c-algo-bit: Improve debuggingJean Delvare1-90/+95
Improve the debugging features of the i2c-algo-bit driver: * Make it possible to compile the driver without debugging support at all, making it much smaller. * Use dev_dbg() for debugging messages where possible, and dev_err() for error messages. * Remove redundant debugging messages. These changes allowed for minor code cleanups, which are included as well. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c-algo-bit: Implement a 50/50 SCL duty cycleJean Delvare1-20/+22
The original i2c-algo-bit implementation uses a 33/66 SCL duty cycle when bits are being written on the bus. While the I2C specification doesn't forbid it, this prevents us from driving the I2C bus to its max speed, limiting us to 66 kbps max on standard I2C busses. Implementing a 50/50 duty cycle instead lets us max out the bandwidth up to the theoretical max of 100 kbps on standard I2C busses. This is particularly important when large amounts of data need to be transfered over the bus, as is the case with some TV adapters when the firmware is being uploaded. In fact this change even allows, at least in theory, fast-mode I2C support at 125, 166 and 250 kbps. There's no way to reach the theoretical max of 400 kbps with this implementation. But I don't think we want to put efforts in that direction anyway: software-driven I2C is very CPU-intensive and bad for latency. Other timing changes: * Don't set SDA high explicitly on error, we're going to issue a stop condition before we leave anyway. * If an error occurs when sending the slave address, yield the CPU before retrying, and remove the additional delay after the new start condition. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c-omap: Switch to static adapter numberingDavid Brownell1-1/+2
Update the OMAP I2C driver to use i2c_add_numbered_adapter(), so that later patches can convert boards to using new-style drivers. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c: Blackfin Two Wire Interface driverBryan Wu3-0/+661
The i2c linux driver for blackfin architecture which supports blackfin on-chip TWI controller i2c operation. Signed-off-by: Bryan Wu <bryan.wu@analog.com> Reviewed-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c-algo-sgi: Comment and whitespace cleanupsLadislav Michl1-4/+5
Signed-off-by: Ladislav Michl <ladis@linux-mips.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c: Make i2c_del_driver a void functionJean Delvare1-9/+3
Make i2c_del_driver a void function, like all other driver removal functions. It always returned 0 even when errors occured, and nobody ever actually checked the return value anyway. And we cannot fail a module removal anyway. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c: Move i2c-isa-only exported symbol declarationsJean Delvare1-0/+4
Move the declaration of i2c-isa-only exported symbols to i2c-isa itself, that's the best way to ensure nobody will attempt to use them. Hopefully we'll get rid of the exports themselves soon anyway. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c: Add i2c_new_probed_device()Jean Delvare1-0/+63
Add a new helper function to instantiate an i2c device. It is meant as a replacement for i2c_new_device() when you don't know for sure at which address your I2C/SMBus device lives. This happens frequently on TV adapters for example, you know there is a tuner chip on the bus, but depending on the exact board model and revision, it can live at different addresses. So, the new i2c_new_probed_device() function will probe the bus according to a list of addresses, and as soon as one of these addresses responds, it will call i2c_new_device() on that one address. This function will make it possible to port the old i2c drivers to the new model quickly. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c-algo-bit: Add i2c_bit_add_numbered_busJean Delvare1-1/+24
Add i2c_bit_add_numbered_bus(), which is equivalent to i2c_bit_add_bus except that it calls i2c_add_numbered_adapter() at the end instead of i2c_add_adapter(). Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c: i2c EXPORT_SYMBOL cleanupDavid Brownell1-36/+28
Make i2c-core.c obey Documentation/CodingStyle better by snugging the EXPORT_SYMBOL declarations next to the relevant definitions. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c: Add i2c_add_numbered_adapter()David Brownell1-26/+100
This adds a call, i2c_add_numbered_adapter(), registering an I2C adapter with a specific bus number and then creating I2C device nodes for any pre-declared devices on that bus. It builds on previous patches adding I2C probe() and remove() support, and that pre-declaration of devices. This completes the core support for "new style" I2C device drivers. Those follow the standard driver model for binding devices to drivers (using probe and remove methods) rather than a legacy model (where the driver tries to autoconfigure each bus, and registers devices itself). Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c: Add i2c_board_info and i2c_new_device()David Brownell5-4/+213
This provides partial support for new-style I2C driver binding. It builds on "struct i2c_board_info" declarations that identify I2C devices on a given board. This is needed on systems with I2C devices that can't be fully probed and/or autoconfigured, such as many embedded Linux configurations where the way a given I2C device is wired may affect how it must be used. There are two models for declaring such devices: * LATE -- using a public function i2c_new_device(). This lets modules declare I2C devices found *AFTER* a given I2C adapter becomes available. For example, a PCI card could create adapters giving access to utility chips on that card, and this would be used to associate those chips with those adapters. * EARLY -- from arch_initcall() level code, using a non-exported function i2c_register_board_info(). This copies the declarations *BEFORE* such an i2c_adapter becomes available, arranging that i2c_new_device() will be called later when i2c-core registers the relevant i2c_adapter. For example, arch/.../.../board-*.c files would declare the I2C devices along with their platform data, and I2C devices would behave much like PNPACPI devices. (That is, both enumerate from board-specific tables.) To match the exported i2c_new_device(), the previously-private function i2c_unregister_device() is now exported. Pending later patches using these new APIs, this is effectively a NOP. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c: i2c stack can remove()David Brownell1-4/+61
More update for new style driver support: add a remove() method, and use it in the relevant code paths. Again, nothing will use this yet since there's nothing to create devices feeding this infrastructure. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c: i2c stack can probe()David Brownell1-42/+99
One of a series of I2C infrastructure updates to support enumeration using the standard Linux driver model. This patch updates probe() and associated hotplug/coldplug support, but not remove(). Nothing yet _uses_ it to create I2C devices, so those hotplug/coldplug mechanisms will be the only externally visible change. This patch will be an overall NOP since the I2C stack doesn't yet create clients/devices except as part of binding them to legacy drivers. Some code is moved earlier in the source code, helping group more of the per-device infrastructure in one place and simplifying handling per-device attributes. Terminology being adopted: "legacy drivers" create devices (i2c_client) themselves, while "new style" ones follow the driver model (the i2c_client is handed to the probe routine). It's an either/or thing; the two models don't mix, and drivers that try mixing them won't even be registered. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c-pca-isa: Port to the new device driver modelJean Delvare2-8/+29
Port the i2c-pca-isa driver to the new device driver model. I'm using Rene Herman's new isa bus type, as it fits the needs nicely. One benefit is that we can now give a proper parent to our i2c adapter. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c-elektor: Port to the new device driver modelJean Delvare1-12/+39
Port the i2c-elektor driver to the new device driver model. I'm using Rene Herman's new isa bus type, as it fits the needs nicely. One benefit is that we can now give a proper parent to our i2c adapter. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c-parport-light: Port to the new device driver modelJean Delvare1-27/+117
Also fix a small race on driver unload: we need to unregister the i2c adapter before we power it off. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c-parport: Fix a minor race on driver unloadJean Delvare1-4/+8
When unloading the driver, we really want to unregister the i2c adapter before we power it off, rather than the other way around. Also speed up the bus a bit when we can sense SCL. The slaves will stretch the line as needed. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01scx200_acb: Fix PCI device reference countJean Delvare1-0/+1
The scx200_acb driver supports two kind of devices, PCI ones and ISA ones. Even ISA ones are detected using the presence of a given PCI device, and we get a reference to it, but never put it back, so we have a leak. Fix it. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c-nforce2: Add support for the MCP61 and MCP65Jean Delvare1-0/+4
Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Hans-Frieder Vogt <hfvogt@gmx.net>
2007-05-01i2c-parport: Optimize binary sizeJean Delvare1-8/+5
Initialize the fields of the i2c_adapter structure individually, rather than copying a whole static template structure. This shaves off 474 bytes or 14% (on i386) from the binary size. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c-algo-bit: Emulate SMBus block readJean Delvare1-0/+17
Now that i2c-core lets the i2c bus drivers emulate the SMBus block read and SMBus block process call transaction types, let's implement that in the popular i2c bit-banging driver. This will also act as a reference implementation for other bus drivers which want to do the same. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c: Emulate SMBus block read over I2CJean Delvare1-8/+26
Let the I2C bus drivers emulate the SMBus Block Read and Block Process Call transactions if they wish. This requires to define a new message flag, which i2c-core will use to let the underlying I2C bus driver know that the first received byte will specify the length of the read message. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c-algo-bit: Always send a stop condition before leavingJean Delvare1-12/+15
The i2c-algo-bit driver doesn't behave well on read errors: it'll bail out without even sending a stop condition on the bus, so the bus will be stuck. So make sure that we always send a stop condition on the bus before we leave. The best way to make sure is to always send it at the end of function bit_xfer. Signed-off-by: Jean Delvare <khali@linux-fr.org>
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