Commit Graph

184899 Commits

Author SHA1 Message Date
Mark Brown
9a7f6a4c6e regulator: Assume regulators are enabled if they don't report anything
If a regulator driver does not provide a way to query if the driver is
enabled then assume that it is enabled.  This is very likely to reflect
the actual state is more useful for callers than reporting an error.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-03-03 14:49:26 +00:00
Mark Brown
17133dc824 regulator: Convert fixed voltage regulator to use enable_time()
It had an open coded version in enable().

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-03-03 14:49:25 +00:00
Mark Brown
69dc16c325 regulator: Add WM8994 regulator support
The WM8994 contains two LDOs with mixed hardware/software control to
minimise the number of external supplies required while delivering
optimal voltages to minimise power consumption.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-03-03 14:49:25 +00:00
Haojian Zhuang
a71b797fdc regulator: enable max8649 regulator driver
Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-03-03 14:49:24 +00:00
Alex Chiang
79ac9bc320 regulator: trivial: fix typos in user-visible Kconfig text
Fix Kconfig text for some Wolfson Micro devices.

Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Alex Chiang <achiang@hp.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-03-03 14:49:24 +00:00
Alberto Panizzo
f4b97b36b7 regulator: mc13783: consider Power Gates as digital regulators.
GPO regulators are digital outputs that can be enabled or disabled by a
dedicated bit in mc13783 POWERMISC register.
In this family can be count in also Power Gates (PWGT1 and 2): enabled by
a dedicated pin a Power Gate is an hardware driven supply where the output
(PWGTnDRV) follow this law:

 Bit PWGTxSPIEN | Pin PWGTxEN | PWGTxDRV |  Read Back
   0 = default  |             |          | PWGTxSPIEN
 ---------------+-------------+----------+------------
       1        |      x      |   Low    |     0
       0        |      0      |   High   |     1
       0        |      1      |   Low    |     0

As read back value of control bit reflects the PWGTxDRV state (not the
control value previously written) and mc13783 POWERMISC register contain
only regulator related bits, a dedicated function to manage these bits is
created here with the aim of tracing the real value of PWGTxSPIEN bits
and reproduce it on next writes.

All POWERMISC users _must_ use the new function to not accidentally
disable Power Gates supplies.

v2 changes:
-Better utilization of abstraction layers.
-Voltage query support. GPO's and PWGTxDRV are fixed voltage regulator
 with voltage value of 3.1V and 5.5V respectively.

Signed-off-by: Alberto Panizzo <maramaopercheseimorto@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-03-03 14:49:23 +00:00
Adrian Hunter
eda79a3041 regulator: Add 'start-up time' to fixed voltage regulators
Add a field to specify a delay for the start-up time of
a fixed voltage regulator.

Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-03-03 14:49:23 +00:00
Mark Brown
75c8ac22e4 regulator: Implement enable_time() for WM835x ISINKs
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-03-03 14:49:23 +00:00
Mark Brown
31aae2beeb regulator: Allow regulators to specify the time taken to ramp on enable
Regulators may sometimes take longer to enable than the control operation
used to do so, either because the regulator has ramp rate control used to
limit inrush current or because the control operation is very fast (GPIO
being the most common example of this).  In order to ensure that consumers
do not rely on the regulator before it is enabled provide an enable_time()
operation and have the core delay for that time before returning to the
caller.

This is implemented as a function since the ramp rate may be specified in
voltage per unit time and therefore the time depend on the configuration.
In future it would be desirable to allow the bulk operations to run the
delays for multiple enables in parallel but this is not currently supported.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-03-03 14:49:23 +00:00
Mark Brown
84b6826306 regulator: Add notifier event on regulator disable
The intended use case is for drivers which disable regulators to save
power but need to do some work to restore the hardware state when
restarting.  If the supplies are not actually disabled due to board
limits or sharing with other active devices this notifier allows the
driver to avoid unneeded reinitialisation, particularly when used with
runtime PM.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-03-03 14:49:23 +00:00
Tobias Klauser
6faa7e0a4b regulator/lp3971: Storage class should be before const qualifier
The C99 specification states in section 6.11.5:

The placement of a storage-class specifier other than at the beginning
of the declaration specifiers in a declaration is an obsolescent
feature.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-03-03 14:49:22 +00:00
Alberto Panizzo
1bd588fd9d regulator: add voltage selection capability to mc13783 regulators v2 .
This patch, complete the mc13783 regulator subsystem driver with
voltage selecting capability.
Main Switches (SW1AB, SW2AB) are not supported yet.

version 2 diffs:
- delete the "Switchers PLL" enable and multiplication factor value
  selecting capability because it is not a voltage or current regulator.
  This will be a part of Main switcher supporting task.
- Correct many coding style problems pointed me out.

Signed-off-by: Alberto Panizzo <maramaopercheseimorto@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-03-03 14:49:22 +00:00
Linus Torvalds
3a5b27bf6f Merge branch 'for-linus' of git://gitorious.org/linux-omap-dss2/linux
* 'for-linus' of git://gitorious.org/linux-omap-dss2/linux: (49 commits)
  OMAP: DSS2: Taal: Fix TE when resuming
  OMAP: DSS2: Taal: Fix ESD check
  OMAP: DSS2: OMAPFB: Constify some function parameters
  OMAP: DSS2: OMAPFB: install omapfb.h
  OMAP: DSS2: DSI: add error prints
  OMAP: DSS2: TPO-TD03MTEA1: fix function names
  OMAP: DSS2: DSI: add dsi_vc_dcs_read_2() helper
  OMAP: DSS2: OMAPFB: Remove FB_OMAP2_FORCE_AUTO_UPDATE
  OMAP: DSS2: DSI: remove external TE support
  OMAP: DSS2: move timing functions
  OMAP: DSS2: move set/get_wss()
  OMAP: DSS2: move enable/disable/suspend/resume
  OMAP: DSS2: move update() and sync()
  OMAP: DSS2: move set/get_update_mode()
  OMAP: DSS2: move enable/get_te()
  OMAP: DSS2: move get_recommended_bpp()
  OMAP: DSS2: move get_resolution()
  OMAP: DSS2: move enable/disable_channel to overlay manager
  OMAP: DSS2: move wait_vsync()
  OMAP: DSS2: move get/set_rotate()
  ...
2010-03-02 10:41:26 -08:00
Linus Torvalds
5057bfaff8 Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6
* 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: (214 commits)
  omap2: Initialize Menelaus and MMC for N8X0
  AM3517 EVM: correct typo - tca6416 mispelt as tca6516
  AM3517 EVM: Enable I2C support
  AM35x: Enable OMAP_MUX in defconfig
  AM35x: Add missing GPIO mux config for EHCI port
  Zoom3: Defconfig update
  omap: i2c: Fix muxing for command line enabled bus
  OMAP4: clock: Remove clock hacks from timer-gp.c
  OMAP4: clock: Add dummy clock nodes for interface clocks
  OMAP4: clock: Rename leaf clock nodes to end with a _ick or _fck
  OMAP2+ clock: revise omap2_clk_{disable,enable}()
  OMAP2/3 clock: combine OMAP2 & 3 boot-time MPU rate change code
  OMAP clockdomain: if no autodeps exist, don't try to add or remove them
  OMAP hwmod: add hwmod class support
  OMAP hwmod: convert header files with static allocations into C files
  OMAP hwmod: convert hwmod to use hardware clock names rather than clkdev dev+con
  OMAP clock: add omap_clk_get_by_name() for use by OMAP hwmod core code
  OMAP3: clock: add capability to change rate of dpll4_m5_ck_3630
  OMAP4 clock: drop the ALWAYS_ENABLED clock flag
  OMAP clock: drop RATE_FIXED clock flag
  ...
2010-03-02 10:34:25 -08:00
Linus Torvalds
6c0ad5dfd3 Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  Revert "blkdev: fix merge_bvec_fn return value checks"
2010-03-02 10:33:36 -08:00
Jens Axboe
9599945bac Revert "blkdev: fix merge_bvec_fn return value checks"
This reverts commit 9f7cdbc33f.

It's causing oopses om dm setups, so revert it until we investigate.

Reported-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Tested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2010-03-02 19:17:34 +01:00
Linus Torvalds
b7f3a209e9 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next-2.6:
  sparc: Support show_unhandled_signals.
  sparc: use __ratelimit
  sunxvr500: Additional PCI id for sunxvr500 driver
  sparc: use asm-generic/scatterlist.h
  sparc64: If 'slot-names' property exist, create sysfs PCI slot information.
  sparc: remove trailing space in messages
  sparc: remove redundant return statements
2010-03-02 07:56:44 -08:00
Linus Torvalds
6d6b89bd2e Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1341 commits)
  virtio_net: remove forgotten assignment
  be2net: fix tx completion polling
  sis190: fix cable detect via link status poll
  net: fix protocol sk_buff field
  bridge: Fix build error when IGMP_SNOOPING is not enabled
  bnx2x: Tx barriers and locks
  scm: Only support SCM_RIGHTS on unix domain sockets.
  vhost-net: restart tx poll on sk_sndbuf full
  vhost: fix get_user_pages_fast error handling
  vhost: initialize log eventfd context pointer
  vhost: logging thinko fix
  wireless: convert to use netdev_for_each_mc_addr
  ethtool: do not set some flags, if others failed
  ipoib: returned back addrlen check for mc addresses
  netlink: Adding inode field to /proc/net/netlink
  axnet_cs: add new id
  bridge: Make IGMP snooping depend upon BRIDGE.
  bridge: Add multicast count/interval sysfs entries
  bridge: Add hash elasticity/max sysfs entries
  bridge: Add multicast_snooping sysfs toggle
  ...

Trivial conflicts in Documentation/feature-removal-schedule.txt
2010-03-02 07:55:08 -08:00
Tomi Valkeinen
21df20fcfb OMAP: DSS2: Taal: Fix TE when resuming
TE was not initialized properly on power on, which broke TE when resuming
from suspend.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
2010-03-02 17:24:18 +02:00
Jiri Pirko
2507c05ff5 virtio_net: remove forgotten assignment
This is no longer needed. I missed to remove this in
567ec874d1 ("net: convert multiple
drivers to use netdev_for_each_mc_addr, part6")

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-02 03:57:33 -08:00
Sathya Perla
f31e50a802 be2net: fix tx completion polling
In tx/mcc polling, napi_complete() is being incorrectly called
before reaping tx completions. This can cause tx compl processing
to be scheduled on another cpu concurrently which can result in a panic.
This if fixed by calling napi complete() after tx/mcc compl processing
but before re-enabling interrupts (via a cq notify).

Signed-off-by: Sathya Perla <sathyap@serverengines.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-02 03:56:39 -08:00
Herton Ronaldo Krzesinski
b88aafd365 sis190: fix cable detect via link status poll
Some sis190 devices don't report LinkChange, so do polling for
link status.

Fixes http://bugzilla.kernel.org/show_bug.cgi?id=11926

Signed-off-by: Herton Ronaldo Krzesinski <herton@mandriva.com.br>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-02 03:44:41 -08:00
Eric Dumazet
4ab408dea0 net: fix protocol sk_buff field
Commit e992cd9b72 (kmemcheck: make bitfield annotations truly no-ops
when disabled) allows us to revert a workaround we did in the past to
not add holes in sk_buff structure.

This patch partially reverts commit 14d18a81b5
(net: fix kmemcheck annotations) so that sparse doesnt complain:

include/linux/skbuff.h:357:41: error: invalid bitfield specifier for
type restricted __be16.

Reported-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-02 03:05:05 -08:00
Sridhar Samudrala
85b3526932 bridge: Fix build error when IGMP_SNOOPING is not enabled
Fix the following build error when IGMP_SNOOPING is not enabled.
In file included from net/bridge/br.c:24:
net/bridge/br_private.h: In function 'br_multicast_is_router':
net/bridge/br_private.h:361: error: 'struct net_bridge' has no member named 'multicast_router'
net/bridge/br_private.h:362: error: 'struct net_bridge' has no member named 'multicast_router'
net/bridge/br_private.h:363: error: 'struct net_bridge' has no member named 'multicast_router_timer'

Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-02 03:05:04 -08:00
Tony Lindgren
d702d12167 Merge with mainline to remove plat-omap/Kconfig conflict
Conflicts:
	arch/arm/plat-omap/Kconfig
2010-03-01 14:19:05 -08:00
Linus Torvalds
13dda80e48 Merge branch 'davinci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci
* 'davinci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci: (40 commits)
  DaVinci DM365: Adding support for SPI EEPROM
  DaVinci DM365: Adding DM365 SPI support
  DaVinci DM355: Modifications to DM355 SPI support
  DaVinci: SPI: Adding header file for SPI support.
  davinci: dm646x: CDCE clocks: davinci_clk converted to clk_lookup
  davinci: clkdev cleanup: remove clk_lookup wrapper, use clkdev_add_table()
  DaVinci: DM365: Voice codec support for the DM365 SoC
  davinci: clock: let clk->set_rate function sleep
  Add SDA and SCL pin numbers to i2c platform data
  davinci: da8xx/omap-l1xx: Add EDMA platform data for da850/omap-l138
  davinci: build list of unused EDMA events dynamically
  davinci: Fix edma_alloc_channel api for EDMA_CHANNEL_ANY case
  davinci: Keep count of channel controllers on a platform
  davinci: Correct return value of edma_alloc_channel api
  davinci: add CDCE949 support on DM6467 EVM
  davinci: add support for CDCE949 clock synthesizer
  davinci: da850/omap-l138 EVM: register for suspend support
  davinci: da850/omap-l138: add support for SoC suspend
  davinci: add power management support
  DaVinci: DM365: Changing default queue for DM365.
  ...
2010-03-01 13:05:40 -08:00
Linus Torvalds
379e3a820d Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: (38 commits)
  sata_via: Delay on vt6420 when starting ATAPI DMA write
  ata: Detect Delkin Devices compact flash
  pata_efar: Enable parallel scanning
  pata_atiixp: enable parallel scan
  [libata] pata_atiixp: add locking for parallel scanning
  [libata] pata_efar: add locking for parallel scanning
  libata: Pass host flags into the pci helper
  [libata] pata_marvell: CONFIG_AHCI is really CONFIG_SATA_AHCI
  libata: Allow pata_legacy to be built on non-ISA but PCI systems
  pata_pdc202xx_old: fix UDMA mode for PDC2026x chipsets
  pata_pdc202xx_old: fix UDMA mode for Promise UDMA33 cards
  [libata] pata_at91: fix backslash-continued string
  pata_via: store UDMA masks in via_isa_bridges table
  pata_via: fix address setup timings underlocking
  pata_serverworks: fix error message
  pata_serverworks: fix PIO setup for the second channel
  pata_efar: fix secondary port support
  pata_cypress: fix PIO timings underclocking
  pata_cs5535: use correct values for PIO1 and PIO2 data timings
  pata_cmd64x: remove unused definitions
  ...
2010-03-01 13:04:58 -08:00
Bart Hartgers
a55ab496ea sata_via: Delay on vt6420 when starting ATAPI DMA write
When writing a disc on certain lite-on dvd-writers (also rebadged
as optiarc/LG/...) connected to a vt6420, the ATAPI CDB ends
up in the datastream and on the disc, causing silent corruption.
Delaying between sending the CDB and starting DMA seems to
prevent this.

I do not know if there are burners that do not suffer from
this, but the patch should be safe for those as well.

There are many reports of this issue, but AFAICT no solution was
found before. For example:
http://lkml.indiana.edu/hypermail/linux/kernel/0802.3/0561.html

Signed-off-by: Bart Hartgers <bart.hartgers@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-03-01 15:19:21 -05:00
Ben Gardner
4b7d1c0509 ata: Detect Delkin Devices compact flash
I have a Delkin Devices compact flash card that isn't being recognized using the
SATA/PATA drivers.
The card is recognized and works with the deprecated ATA drivers.

The error I am seeing is:
ata1.00: failed to IDENTIFY (device reports invalid type, err_mask=0x0)

I tracked it down to ata_id_is_cfa() in include/linux/ata.h.
The Delkin card has id[0] set to 0x844a and id[83] set to 0.
This isn't what the kernel expects and is probably incorrect.

The simplest work-around is to add a check for 0x844a to ata_id_is_cfa().

Signed-off-by: Ben Gardner <gardner.ben@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-03-01 15:11:32 -05:00
Alan Cox
7e044a12c7 pata_efar: Enable parallel scanning
Again originally proposed by Bartlomiej but this does it by using the
generic helper logic instead.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-03-01 15:07:21 -05:00
Alan Cox
1d3a8118b0 pata_atiixp: enable parallel scan
This was originally proposed by Bartlomiej but as a device specific
expansion of the init_one function rather than making the helper more
generic.

Enable the parallel scan via the generic flags.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-03-01 15:07:01 -05:00
Bartlomiej Zolnierkiewicz
e99846f18f [libata] pata_atiixp: add locking for parallel scanning
This is similar change as commit 60c3be3 for ata_piix host driver
and while pata_atiixp doesn't enable parallel scan yet the race
could probably also be triggered by requesting re-scanning of both
ports at the same time using SCSI sysfs interface.

[Ported to current tree without other patch dependancies by Alan Cox]

Original is
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

This one is
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-03-01 15:06:28 -05:00
Bartlomiej Zolnierkiewicz
303f1a76ae [libata] pata_efar: add locking for parallel scanning
Add clearing of UDMA enable bit also for PIO modes and then add
extra locking for parallel scanning.

This is similar change as commit 60c3be3 for ata_piix host driver
and while pata_efar doesn't enable parallel scan yet the race could
probably also be triggered by requesting re-scanning of both ports
at the same time using SCSI sysfs interface.

[Ported to current kernel without other patch dependancies by
 Alan Cox]

Original is
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

This one is
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-03-01 15:04:58 -05:00
Alan Cox
16ea0fc98d libata: Pass host flags into the pci helper
This allows parallel scan and the like to be set without having to stop
using the existing full helper functions. This patch merely adds the argument
and fixes up the callers. It doesn't undo the special cases already in the
tree or add any new parallel callers.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-03-01 14:58:46 -05:00
Christoph Egger
cb6643e1c3 [libata] pata_marvell: CONFIG_AHCI is really CONFIG_SATA_AHCI
The marvell driver comtains a fallback to ahci for the sata ports
which is incorrectly checked as CONFIG_AHCI while the only AHCI config
item is actually called SATA_AHCI (which also sounds sensible
considering it's a fallback for the sata ports).

Signed-off-by: Christoph Egger <siccegge@stud.informatik.uni-erlangen.de>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-03-01 14:58:46 -05:00
Alan Cox
96780078f3 libata: Allow pata_legacy to be built on non-ISA but PCI systems
This is needed for some unsupported hardware setups on strange 64bit
mainboards where crazy stuff has been done like putting flash ata adapters
on the LPC bus, or where the real hardware is hidden/confused.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-03-01 14:58:46 -05:00
Bartlomiej Zolnierkiewicz
750e519da7 pata_pdc202xx_old: fix UDMA mode for PDC2026x chipsets
PDC2026x chipsets need the same treatment as PDC20246 one.

This is completely untested but will hopefully fix UDMA issues
that people have been reporting against pata_pdc202xx_old for
the last couple of years.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-03-01 14:58:46 -05:00
Bartlomiej Zolnierkiewicz
a75032e877 pata_pdc202xx_old: fix UDMA mode for Promise UDMA33 cards
On Monday 04 January 2010 02:30:24 pm Russell King wrote:

> Found the problem - getting rid of the read of the alt status register
> after the command has been written fixes the UDMA CRC errors on write:
>
> @@ -676,7 +676,8 @@ void ata_sff_exec_command(struct ata_port *ap, const struct
> ata_taskfile *tf)
>         DPRINTK("ata%u: cmd 0x%X\n", ap->print_id, tf->command);
>
>         iowrite8(tf->command, ap->ioaddr.command_addr);
> -       ata_sff_pause(ap);
> +       ndelay(400);
> +//     ata_sff_pause(ap);
>  }
>  EXPORT_SYMBOL_GPL(ata_sff_exec_command);
>
>
> This rather makes sense.  The PDC20247 handles the UDMA part of the
> protocol.  It has no way to tell the PDC20246 to wait while it suspends
> UDMA, so that a normal register access can take place - the 246 ploughs
> on with the register access without any regard to the state of the 247.
>
> If the drive immediately starts the UDMA protocol after a write to the
> command register (as it probably will for the DMA WRITE command), then
> we'll be accessing the taskfile in the middle of the UDMA setup, which
> can't be good.  It's certainly a violation of the ATA specs.

Fix it by adding custom ->sff_exec_command method for UDMA33 chipsets.

Debugged-by: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-03-01 14:58:46 -05:00
Jeff Garzik
429e3861f9 [libata] pata_at91: fix backslash-continued string
Noticed and rough patch by Joe Perches.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-03-01 14:58:46 -05:00
Bartlomiej Zolnierkiewicz
460f531846 pata_via: store UDMA masks in via_isa_bridges table
* store UDMA masks in via_isa_bridges[] and while at it make "flags"
  field to be u8 instead of u16

* convert the driver to use UDMA masks from via_isa_bridges[]

* remove no longer needed VIA_UDMA* defines

Make some minor documentation and CodingStyle fixes while at it.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-03-01 14:58:46 -05:00
Bartlomiej Zolnierkiewicz
f777582f49 pata_via: fix address setup timings underlocking
Correct via_do_set_mode() documentation while at it.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-03-01 14:58:45 -05:00
Bartlomiej Zolnierkiewicz
cfcf9ee26a pata_serverworks: fix error message
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-03-01 14:58:45 -05:00
Bartlomiej Zolnierkiewicz
8490377acc pata_serverworks: fix PIO setup for the second channel
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-03-01 14:58:45 -05:00
Bartlomiej Zolnierkiewicz
73e2e3d0e9 pata_efar: fix secondary port support
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-03-01 14:58:45 -05:00
Bartlomiej Zolnierkiewicz
3403c24529 pata_cypress: fix PIO timings underclocking
Timing registers should be programmed with the desired number of clocks
minus one clock.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-03-01 14:58:45 -05:00
Bartlomiej Zolnierkiewicz
8ebf473860 pata_cs5535: use correct values for PIO1 and PIO2 data timings
There shouldn't be any problems with it as IDE cs5535 host driver
has been using those values for years and they match values given
in the (publicly available) datasheet.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-03-01 14:58:45 -05:00
Bartlomiej Zolnierkiewicz
c754d9b6e0 pata_cmd64x: remove unused definitions
s/ARTIM2/ARTTIM23/ in cmd648_bmdma_stop() while at it

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-03-01 14:58:45 -05:00
Bartlomiej Zolnierkiewicz
03a849e6dd pata_cmd64x: cmd648_bmdma_stop() fix
Clear the primary channel pending interrupt bit
instead of the reserved one.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-03-01 14:58:45 -05:00
Bartlomiej Zolnierkiewicz
d62f5576ef pata_cmd64x: fix handling of address setup timings
Account for the requirements of the DMA mode currently used
by the pair device.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-03-01 14:58:44 -05:00
Bartlomiej Zolnierkiewicz
a2bd62207a pata_cmd64x: fix PIO setup
Fix incorrect handling of recovery clocks value == 16 resulting
in overclocked recovery timings & potentially underclocked active
timings.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-03-01 14:58:44 -05:00