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* m68k: Mac II ADB fixesFinn Thain2007-05-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix a crash caused by requests placed in the queue with the completed flag already set. This lead to some ADB_SYNC requests returning early and their request structs being popped off the stack while still queued. Stack corruption ensued or an invalid request callback pointer was invoked or both. Eliminate macii_retransmit() and its buggy implementation of macii_write(). Have macii_queue_poll() fully initialise the request queues. Fix a bug in macii_queue_poll() where the last_req pointer was not being set. This caused some requests to leave the queue before being completed (and would also corrupt the stack under certain conditions). Fix a race in macii_start that could set the state machine to "reading" while current_req was null. No longer send poll commands with the ADBREQ_REPLY flag -- doing that caused the replies to be stored in the request buffer where they were forgotten about. Don't autopoll by continuously sending new Talk commands. Get the controller to do that for us. This reduces the ADB interrupt rate on an idle bus to about 5 per second. Only autopoll the devices that were probed. Explicitly clear the interrupt flag when polling. Use disable_irq rather than local_irq_save when polling. Remove excess local_irq_save/restore pairs. Improve bus timeout and service request detection. Remove unused code (last_reply, adb_dir etc) and unneeded code (prefix_len, first_byte etc). Change TIP and TACK to their correct names on this ADB controller (ST_EVEN and ST_ODD). Add some commentry. Add a generous quantity of sanity checks (BUG_ONs). Let m68k macs use the adb_sync boot param too. Tested on Mac II, Mac IIci, Quadra 650, Quadra 700 etc. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* m68k: Mac DP8390 updateFinn Thain2007-05-04
| | | | | | | | | Fix the support for C/NET nubus ethernet cards etc. Sync up the DP8390 driver with the latest code in the mac68k repo. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* NuBus header updateFinn Thain2007-05-04
| | | | | | | | | Sync the nubus defines with the latest code in the mac68k repo. Some of these are needed for DP8390 driver update in the next patch. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* m68k: Amiga A2065 and Ariadne TX statisticsGeert Uytterhoeven2007-05-04
| | | | | | | | Add missing code to the Amiga A2065 and Ariadne drivers to update net_device_stats.tx_bytes. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* m68k: pmu_queue_request() declaration conflictFinn Thain2007-05-04
| | | | | | | | | Fixes a "static qualifier follows non-static qualifier" error from gcc 4. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* m68k: Atari SCSI workqueue updatesGeert Uytterhoeven2007-05-04
| | | | | | | Workqueue updates for the Atari SCSI driver Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* hilkbd: Kill compiler warning and fix comment dyslexiaGeert Uytterhoeven2007-05-04
| | | | | | | hilkbd: Kill compiler warning and fix comment dyslexia Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* m68k: Mac89x0 Ethernet netif updatesMatthias Urlichs2007-05-04
| | | | | | | | | Macintosh CS89x0 Ethernet: Netif updates Addition of netif_stop_queue() before transmission by Michael Schmitz skb_copy_{from,to}_linear_data() conversion by Geert Uytterhoeven Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* m68k: Atari fb revivalMichael Schmitz2007-05-04
| | | | | | | | | | | Update the atari fb to 2.6 by Michael Schmitz, Reformatting and rewrite of bit plane functions by Roman Zippel, A few more fixes by Geert Uytterhoeven. Signed-off-by: Michael Schmitz <schmitz@debian.org> Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* m68k: Atari keyboard and mouse support.Michael Schmitz2007-05-04
| | | | | | | | | | Atari keyboard and mouse support. (reformating and Kconfig fixes by Roman Zippel) Signed-off-by: Michael Schmitz <schmitz@debian.org> Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* m68k: Atari SCSI driver compile fixesRoman Zippel2007-05-04
| | | | | | | | Atari SCSI driver compile fixes Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* m68k: Reformat the Atari SCSI driverRoman Zippel2007-05-04
| | | | | | | | Reformat the Atari SCSI driver Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* m68k: Atari SCSI revivalMichael Schmitz2007-05-04
| | | | | | | | | | | | | | SCSI should be working on a TT (but someone should really try!) but causes trouble on a Falcon (as in: it ate a filesystem of mine) at least when used concurrently with IDE. I have the notion it's because locking of the ST-DMA interrupt by IDE is broken in 2.6 (the IDE driver always complains about trying to release an already-released ST-DMA). Needs more work, but that's on the IDE or m68k interrupt side rather than SCSI. Signed-off-by: Michael Schmitz <schmitz@debian.org> Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6Linus Torvalds2007-05-04
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6: (44 commits) i2c-s3c2410: Fix bug in releasing driver i2c-s3c2410: Fix I2C SDA to SCL setup time i2c: New i2c-tiny-usb bus driver i2c: Documentation update i2c: SPIN_LOCK_UNLOCKED cleanup i2c: Obsolete i2c-ixp2000, i2c-ixp4xx and scx200_i2c i2c: New Simtec I2C bus driver i2c: Bitbanging I2C bus driver using the GPIO API Use menuconfig objects - I2C i2c: Restore i2c_smbus_read_block_data i2c-pxa: Clean transaction stop i2c-algo-bit: Improve debugging i2c-algo-bit: Implement a 50/50 SCL duty cycle i2c-omap: Switch to static adapter numbering i2c: Blackfin Two Wire Interface driver i2c-algo-sgi: Comment and whitespace cleanups i2c: Make i2c_del_driver a void function i2c: Move i2c-isa-only exported symbol declarations i2c: Document i2c_new_device() i2c: Add i2c_new_probed_device() ... Fixed trivial conflict in Documentation/feature-removal-schedule.txt manually. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * i2c-s3c2410: Fix bug in releasing driverBen Dooks2007-05-01
| | | | | | | | | | | | | | | | | | | | | | | | 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>
| * i2c-s3c2410: Fix I2C SDA to SCL setup timeBen Dooks2007-05-01
| | | | | | | | | | | | | | | | 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>
| * i2c: New i2c-tiny-usb bus driverTill Harbaum2007-05-01
| | | | | | | | | | | | | | | | | | | | 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>
| * i2c: SPIN_LOCK_UNLOCKED cleanupMilind Arun Choudhary2007-05-01
| | | | | | | | | | | | | | 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>
| * i2c: Obsolete i2c-ixp2000, i2c-ixp4xx and scx200_i2cJean Delvare2007-05-01
| | | | | | | | | | | | | | | | | | 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>
| * i2c: New Simtec I2C bus driverBen Dooks2007-05-01
| | | | | | | | | | | | | | 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>
| * i2c: Bitbanging I2C bus driver using the GPIO APIHaavard Skinnemoen2007-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * Use menuconfig objects - I2CJan Engelhardt2007-05-01
| | | | | | | | | | | | | | | | 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>
| * i2c: Restore i2c_smbus_read_block_dataJean Delvare2007-05-01
| | | | | | | | | | | | | | 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>
| * i2c-pxa: Clean transaction stopJean Delvare2007-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * i2c-algo-bit: Improve debuggingJean Delvare2007-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * i2c-algo-bit: Implement a 50/50 SCL duty cycleJean Delvare2007-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * i2c-omap: Switch to static adapter numberingDavid Brownell2007-05-01
| | | | | | | | | | | | | | | | 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>
| * i2c: Blackfin Two Wire Interface driverBryan Wu2007-05-01
| | | | | | | | | | | | | | | | | | | | | | 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>
| * i2c-algo-sgi: Comment and whitespace cleanupsLadislav Michl2007-05-01
| | | | | | | | | | Signed-off-by: Ladislav Michl <ladis@linux-mips.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
| * i2c: Make i2c_del_driver a void functionJean Delvare2007-05-01
| | | | | | | | | | | | | | | | | | 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>
| * i2c: Move i2c-isa-only exported symbol declarationsJean Delvare2007-05-01
| | | | | | | | | | | | | | | | 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>
| * i2c: Add i2c_new_probed_device()Jean Delvare2007-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * i2c-algo-bit: Add i2c_bit_add_numbered_busJean Delvare2007-05-01
| | | | | | | | | | | | | | | | 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>
| * i2c: i2c EXPORT_SYMBOL cleanupDavid Brownell2007-05-01
| | | | | | | | | | | | | | | | 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>
| * i2c: Add i2c_add_numbered_adapter()David Brownell2007-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * i2c: Add i2c_board_info and i2c_new_device()David Brownell2007-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * i2c: i2c stack can remove()David Brownell2007-05-01
| | | | | | | | | | | | | | | | | | | | | | 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>
| * i2c: i2c stack can probe()David Brownell2007-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * i2c-pca-isa: Port to the new device driver modelJean Delvare2007-05-01
| | | | | | | | | | | | | | | | 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>
| * i2c-elektor: Port to the new device driver modelJean Delvare2007-05-01
| | | | | | | | | | | | | | | | 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>
| * i2c-parport-light: Port to the new device driver modelJean Delvare2007-05-01
| | | | | | | | | | | | | | 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>
| * i2c-parport: Fix a minor race on driver unloadJean Delvare2007-05-01
| | | | | | | | | | | | | | | | | | | | 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>
| * scx200_acb: Fix PCI device reference countJean Delvare2007-05-01
| | | | | | | | | | | | | | | | | | 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>
| * i2c: Cleanup the includes of <linux/i2c.h>Jean Delvare2007-05-01
| | | | | | | | | | | | | | Clean up the includes of <linux/i2c.h>. Only include this header file when we actually need it. Signed-off-by: Jean Delvare <khali@linux-fr.org>
| * i2c-nforce2: Add support for the MCP61 and MCP65Jean Delvare2007-05-01
| | | | | | | | | | Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Hans-Frieder Vogt <hfvogt@gmx.net>
| * i2c-parport: Optimize binary sizeJean Delvare2007-05-01
| | | | | | | | | | | | | | | | 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>
| * i2c-algo-bit: Emulate SMBus block readJean Delvare2007-05-01
| | | | | | | | | | | | | | | | | | 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>
| * i2c: Emulate SMBus block read over I2CJean Delvare2007-05-01
| | | | | | | | | | | | | | | | | | | | 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>
| * i2c-algo-bit: Always send a stop condition before leavingJean Delvare2007-05-01
| | | | | | | | | | | | | | | | | | | | 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>
| * i2c: Rename dev_to_i2c_adapter()David Brownell2007-05-01
| | | | | | | | | | | | | | | | | | Rename dev_to_i2c_adapter() as to_i2c_adapter(), since the previous syntax was a surprising and needless difference from normal naming conventions in Linux. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
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