aboutsummaryrefslogtreecommitdiffstats
path: root/Documentation/mca.txt (unfollow)
AgeCommit message (Collapse)AuthorFilesLines
2008-01-27i2c: Change prototypes of refcounting functionsJean Delvare3-27/+26
Use more standard prototypes for i2c_use_client() and i2c_release_client(). The former now returns a pointer to the client, and the latter no longer returns anything. This matches what all other subsystems do. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: David Brownell <david-b@pacbell.net>
2008-01-27i2c: Use the driver model reference countingJean Delvare3-48/+2
Don't implement our own reference counting mechanism for i2c clients when the driver model already has one. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: David Brownell <david-b@pacbell.net>
2008-01-27i2c: Deprecate drivers for I2C buses on video adaptersJean Delvare2-4/+20
The framebuffer drivers for these pieces of hardware include support for the DDC/I2C buses, so there is no need for separate drivers. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-01-27i2c: Don't uselessly set i2c_adapter.retriesJean Delvare5-6/+0
I2C adapter drivers are supposed to handle retries on nack by themselves if they do, so there's no point in setting .retries if they don't. As this retry mechanism is going away (at least in its current form), clean this up now so that we don't get build failures later. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-01-27i2c: Kill rogue driver IDsJean Delvare3-7/+0
I2C driver IDs are optional, so if you don't need one, just omit it. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-01-27i2c: normal_i2c can be made const (remaining drivers)Jean Delvare13-18/+20
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-01-27i2c: normal_i2c can be made const (rtc drivers)Jean Delvare6-6/+6
Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Alessandro Zummo <alessandro.zummo@towertech.it>
2008-01-27i2c: Constify client address dataMark M. Hoffman3-60/+46
This patch allows much of the I2C client address data to move from initdata into text. Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-01-27i2c-algo-pcf: Delete broken 10-bit address supportJean Delvare1-72/+13
The 10-bit address support in i2c-algo-pcf is so heavily broken that it can't have ever been used. Nobody ever complained, so I'll take it that nobody needs it. Let's just delete it. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-01-27i2c-algo-bit: Fix NAK/ARB commentsDavid Brownell1-4/+20
Update comments and logging on return path for byte writes. NAK is an error, to be reported or optionally ignored. Timeouts are always errors. Lost arbitration is not currently handled, so don't even list it as an option in the error message. Don't return bogus EFAULT code for inappropriate NAK; EIO is better, there is no bad userspace address in question. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-01-27i2c-algo-bit: Whitespace fixes (+ NAK/ARB comments)David Brownell1-97/+105
Fix *LOTS* of whitespace goofs and checkpatch.pl warnings, strangely parenthesized ternary expressions, and other CodingStyle glitches. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-01-27i2c-pxa: Remove hardcoded #ifdef and use cpu_is_pxa27xeric miao1-29/+29
remove #ifdef CONFIG_PXA27x .. #endif and use cpu_is_pxaXXXX() macros so that a single binary can support PXA25x/PXA27x/PXA3xx at run-time. Signed-off-by: eric miao <eric.miao@marvell.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-01-27i2c: some overdue driver removalAdrian Bunk6-213/+0
This patch contains the overdue removal of three I2C drivers. [JD: In fact only i2c-ixp4xx can be removed at the moment, the other two platforms don't implement the generic GPIO layer yet.] Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-01-27ixp4xx-i2c-gpioMichael-Luke Jones5-31/+38
Migrate all ixp4xx devices to the bitbanging I2C bus driver utilizing the arch-neutral GPIO API (linux/i2c-gpio.h). Tested by the nslu2-linux and openwrt projects in public firmware releases. Signed-off-by: Michael-Luke Jones <mlj28@cam.ac.uk> Acked-by: Rod Whitby <rod@whitby.id.au> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-01-27i2c: the scheduled I2C RTC driver removalAdrian Bunk11-1252/+0
This patch contains the scheduled removal of legacy I2C RTC drivers with replacement drivers. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-01-27i2c-stub: Use a single array for byte and word operationsJean Delvare2-10/+8
This mimics the behavior of actual SMBus chips better. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Mark M. Hoffman <mhoffman@lightlink.com>
2008-01-27i2c-stub: Mention the existence of an helper scriptJean Delvare1-0/+3
There's a new script named i2c-stub-from-dump that can be very helpful when working with the i2c-stub driver. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-01-27i2c/tsl2550: Add power management addedRodolfo Giometti1-0/+21
Signed-off-by: Rodolfo Giometti <giometti@linux.it> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-01-27i2c: Add support for the PCF8575 chipBart Van Assche4-1/+302
Signed-off-by: Bart Van Assche <bart.vanassche@gmail.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-01-27i2c-ibm_iic: Whitespace cleanupStefan Roese2-99/+99
Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-01-27i2c-pasemi: use i2c_add_numbered_adapter()Olof Johansson1-1/+2
Use numbered adapter registration to always have the same hardware bus show up at the same number. PWRficient 1682M has three buses, they are all on the same PCI device but different functions. So do the simple thing and register them based on function number. Future products, if having a different number of busses, are expected to have similar behaviour w.r.t. device/function layout. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-01-27i2c-nforce2: The nForce2 can do block transactionsJean Delvare1-0/+1
My guess is that all the chips supported by this driver support block transactions and reset, but for now we play it safe and only list the ones for which this was actually tested. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Oleg Ryjkov <olegr@olegr.ca>
2008-01-27printk: revert ktime_get() timestampsIngo Molnar1-3/+1
revert 19ef9309273d26cb005cb23e6a370353dca91099. Kevin Winchester reported a lockup during X startup an bisected it to this commit. Reported-by: Kevin Winchester <kjwinchester@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-01-26ide: remove REQ_TYPE_ATA_CMDBartlomiej Zolnierkiewicz3-113/+11
Based on the earlier work by Tejun Heo. All users are gone so we can finally remove it. Cc: Tejun Heo <htejun@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: switch ide_cmd_ioctl() to use REQ_TYPE_ATA_TASKFILE requestsBartlomiej Zolnierkiewicz2-34/+33
Based on the earlier work by Tejun Heo. There should be no functionality changes caused by this patch. Cc: Tejun Heo <htejun@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: switch set_xfer_rate() to use REQ_TYPE_ATA_TASKFILE requestsBartlomiej Zolnierkiewicz3-12/+11
Based on the earlier work by Tejun Heo. Switch set_xfer_rate() to use REQ_TYPE_ATA_TASKFILE requests and make ide_wait_cmd() static. There should be no functionality changes caused by this patch. Cc: Tejun Heo <htejun@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: fix final status check in drive_cmd_intr()Bartlomiej Zolnierkiewicz1-2/+2
Don't check for READY_STAT bit being set for PIO-in protocol (makes the final status check in drive_cmd_intr() match the one in task_in_intr()). Also fix function name reported by ide_error() call while at it. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: check BUSY and ERROR status bits before reading data in drive_cmd_intr()Bartlomiej Zolnierkiewicz1-3/+8
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: don't enable local IRQs for PIO-in in driver_cmd_intr() (take 2)Bartlomiej Zolnierkiewicz1-6/+9
Don't enable local IRQs for PIO-in protocol in driver_cmd_intr(). While at it: * Remove redundant rq->cmd_type check. * Read status register after enabling local IRQs for no-data protocol. v2: * Re-add DRQ=1 check lost in v1 (noticed by Sergei). Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: convert "empty" REQ_TYPE_ATA_CMD requests to use REQ_TYPE_ATA_TASKFILEBartlomiej Zolnierkiewicz3-3/+5
Based on the previous work by Tejun Heo. There should be no functionality changes caused by this patch. Cc: Tejun Heo <htejun@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: initialize rq->cmd_type in ide_init_drive_cmd() callersBartlomiej Zolnierkiewicz3-1/+7
* Initialize rq->cmd_type in ide_wait_cmd(), ide_cmd_ioctl() and set_pio_mode() (other callers were aleady over-riding rq->cmd_type). * Remove no longer needed rq->cmd_type setup from ide_init_drive_cmd(). Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: use wait_drive_not_busy() in drive_cmd_intr() (take 2)Bartlomiej Zolnierkiewicz3-6/+5
Use wait_drive_not_busy() in drive_cmd_intr(). v2: * Fix wait_drive_not_busy() comment (noticed by Sergei). Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: kill DATA_READY defineBartlomiej Zolnierkiewicz2-3/+2
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: task_end_request() fixTejun Heo3-14/+7
task_end_request() modified to always call ide_end_drive_cmd() for taskfile requests. Previously, ide_end_drive_cmd() was called only when IDE_TFLAG_FLAGGED was set. Also, ide_dma_intr() is modified to use task_end_request(). Enables TASKFILE ioctls to get valid register outputs on successful completion. Bart: - ported it over recent IDE changes Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: use rq->nr_sectors in task_end_request()Bartlomiej Zolnierkiewicz1-2/+2
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: remove needless ->cursg clearing from task_end_request()Bartlomiej Zolnierkiewicz1-2/+0
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: set IDE_TFLAG_IN_* flags before queuing/executing commandBartlomiej Zolnierkiewicz5-23/+26
* Add IDE_TFLAG_{HOB,TF,DEVICE} defines. * Set IDE_TFLAG_IN_* flags in {do_rw,ide_no_data,ide_raw}_taskfile() users. * Remove no longer needed ->tf_flags setup from ide_end_drive_cmd(). There should be no functionality changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide-tape: fix handling of non-special requests in ->end_request methodBartlomiej Zolnierkiewicz1-0/+5
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: fix final status check in task_in_intr()Bartlomiej Zolnierkiewicz1-1/+1
Check for DRQ bit being cleared on the final status check. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: clear HOB bit for REQ_TYPE_ATA_CMD requests in ide_end_drive_cmd()Bartlomiej Zolnierkiewicz1-0/+2
ide_dump_status() may set HOB bit before ide_end_drive_cmd() is called. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: fix ->io_32bit race in ide_taskfile_ioctl()Tejun Heo2-5/+14
In ide_taskfile_ioctl(), there was a race condition involving drive->io_32bit. It was cleared and restored during ioctl requests but there was no synchronization with other requests. So, other requests could execute with the altered ->io_32bit setting or updated drive->io_32bit could be overwritten by ide_taskfile_ioctl(). This patch adds IDE_TFLAG_IO_16BIT flag to indicate to ide_pio_datablock() that 16-bit I/O is needed regardless of drive->io_32bit settting. Bart: - ported it over recent IDE changes Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26cmd64x: remove /proc/ide/cmd64xBartlomiej Zolnierkiewicz1-113/+1
This belongs to user-space (and only if really needed). text data bss dec hex filename 3874 180 28 4082 ff2 drivers/ide/pci/cmd64x.o.before 2231 180 0 2411 96b drivers/ide/pci/cmd64x.o.after Additionaly to being bloat the code reported incorrect UDMA modes for the reserved values of UDIDETCR0/1 registers. Also while at it remove unused CNTRL_DIS_RA0/1 defines. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: remove broken disk byte-swapping supportBartlomiej Zolnierkiewicz5-41/+3
Remove broken disk byte-swapping support: - it can cause a data corruption on SMP (or if using PREEMPT on UP) - all data coming from disk are byte-swapped by taskfile_*_data() which results in incorrect identify data being reported by /proc/ide/ and IOCTLs - "hdx=bswap/byteswap" kernel parameter has been broken on m68k host drivers (including Atari/Q40 ones) since 2.5.x days (because of 'hwif' zero-ing) - byte-swapping is limited to PIO transfers (for working with TiVo disks on x86 machines using user-space solutions or dm-byteswap should result in much better performance because DMA can be used) For previous discussions please see: http://www.ussg.iu.edu/hypermail/linux/kernel/0201.0/0768.html http://lkml.org/lkml/2004/2/28/111 [ I have dm-byteswap device mapper target if somebody is interested (patch is for 2.6.4 though but I'll dust it off if needed). ] Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: add ide_busy_sleep() helperBartlomiej Zolnierkiewicz1-22/+21
Add ide_busy_sleep() helper and use it in do_probe(), enable_nest() and probe_hwif(). As a nice side-effect this fixes a minor bug in do_probe() (the code was reading status register without any delay). Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: make CONFIG_IDEPCI_PCIBUS_ORDER visible and deprecate itBartlomiej Zolnierkiewicz1-1/+13
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: move CONFIG_IDEPCI_PCIBUS_ORDER code to ide-scan-pci.cBartlomiej Zolnierkiewicz2-103/+110
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: print banner message once per controller in m68k host driversBartlomiej Zolnierkiewicz5-35/+22
* Print banner message once per controller in m68k host drivers. * Change printk() level to KERN_INFO in buddha, falconide and gayle. * Add banner message to q40ide. This is basically a preparation for the future IDE layer changes. Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: add ide_set_irq() inline helperBartlomiej Zolnierkiewicz5-22/+17
There should be no functionality changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide-pmac: use custom hwif->sg_max_nents only if DMA support is enabledBartlomiej Zolnierkiewicz1-2/+2
Move setting hwif->sg_max_nents from pmac_ide_setup_device() to pmac_ide_setup_dma(). Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26rapide: remove write-only hwif->hwif_dataBartlomiej Zolnierkiewicz1-2/+0
Cc: Russell King <rmk@arm.linux.org.uk> Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.