Commit Graph

77508 Commits

Author SHA1 Message Date
Russell King
d0d42df2a4 Merge branches 'at91', 'ep93xx', 'iop', 'kprobes', 'ks8695', 'misc', 'msm', 's3c2410', 'sa1100' and 'vfp' into devel
* at91: (24 commits)
  [ARM] 4615/4: sam926[13]ek buttons updated
  [ARM] 4765/1: [AT91] AT91CAP9A-DK board support
  [ARM] 4764/1: [AT91] AT91CAP9 core support
  [ARM] 4738/1: at91sam9261: Remove udc pullup enabling in board initialisation
  [ARM] 4761/1: [AT91] Board-support for NEW_LEDs
  [ARM] 4760/1: [AT91] SPI CS0 errata on AT91RM9200
  [ARM] 4759/1: [AT91] Buttons on CSB300
  [ARM] 4758/1: [AT91] LEDs
  [ARM] 4757/1: [AT91] UART initialization
  [ARM] 4756/1: [AT91] Makefile cleanup
  [ARM] 4755/1: [AT91] NAND update
  [ARM] 4754/1: [AT91] SSC library support
  [ARM] 4753/1: [AT91] Use DMA_BIT_MASK
  [ARM] 4752/1: [AT91] RTT, RTC and WDT peripherals on SAM9
  [ARM] 4751/1: [AT91] ISI peripheral on SAM9263
  [ARM] 4750/1: [AT91] STN LCD displays on SAM9261
  [ARM] 4734/1: at91sam9263ek: include IRQ for Ethernet PHY
  [ARM] 4646/1: AT91: configurable HZ, default to 128
  [ARM] 4688/1: at91: speed-up irq processing
  [ARM] 4657/1: AT91: Header definition update
  ...

* ep93xx:
  [ARM] 4671/1: ep93xx: remove obsolete gpio_line_* operations
  [ARM] 4670/1: ep93xx: implement IRQT_BOTHEDGE gpio irq sense type
  [ARM] 4669/1: ep93xx: simplify GPIO code and cleanups
  [ARM] 4668/1: ep93xx: implement new GPIO API

* iop:
  [ARM] 4770/1: GLAN Tank: correct physmap_flash_data width field
  [ARM] 4732/1: GLAN Tank: register rtc-rs5c372 i2c device
  [ARM] 4708/1: iop: update defconfigs for 2.6.24

* kprobes:
  ARM kprobes: let's enable it
  ARM kprobes: special hook for the kprobes breakpoint handler
  ARM kprobes: prevent some functions involved with kprobes from being probed
  ARM kprobes: don't let a single-stepped stmdb corrupt the exception stack
  ARM kprobes: add the kprobes hook to the page fault handler
  ARM kprobes: core code
  ARM kprobes: instruction single-stepping support

* ks8695:
  [ARM] 4603/1: KS8695: debugfs interface to view pin state
  [ARM] 4601/1: KS8695: PCI support

* misc:
  [ARM] remove duplicate includes
  [ARM] CONFIG_DEBUG_STACK_USAGE
  [ARM] 4689/1: small comment wrap fix
  [ARM] 4687/1: Trivial arch/arm/kernel/entry-common.S comment fix
  [ARM] 4666/1: ixp4xx: fix sparse warnings in include/asm-arm/arch-ixp4xx/io.h
  [ARM] remove reference to non-existent MTD_OBSOLETE_CHIPS
  [SERIAL] 21285: Report baud rate back via termios
  [ARM] Remove pointless casts from void pointers,
  [ARM] Misc minor interrupt handler cleanups
  [ARM] Remove at91_lcdc.h
  [ARM] ARRAY_SIZE() cleanup
  [ARM] Update mach-types

* msm:
  [ARM] msm: dma support for MSM7X00A
  [ARM] msm: board file for MACH_HALIBUT (QCT MSM7200A)
  [ARM] msm: irq and timer support for ARCH_MSM7X00A
  [ARM] msm: core platform support for ARCH_MSM7X00A

* s3c2410: (33 commits)
  [ARM] 4795/1: S3C244X: Add armclk and setparent call
  [ARM] 4794/1: S3C24XX: Comonise S3C2440 and S3C2442 clock code
  [ARM] 4793/1: S3C24XX: Add IRQ->GPIO pin mapping function
  [ARM] 4792/1: S3C24XX: Remove warnings from debug-macro.S
  [ARM] 4791/1: S3C2412: Make fclk a parent of msysclk
  [ARM] 4790/1: S3C2412: Fix parent selection for msysclk.
  [ARM] 4789/1: S3C2412: Add missing CLKDIVN register values
  [ARM] 4788/1: S3C24XX: Fix paramet to s3c2410_dma_ctrl if S3C2410_DMAF_AUTOSTART used.
  [ARM] 4787/1: S3C24XX: s3c2410_dma_request() should return the allocated channel number
  [ARM] 4786/1: S3C2412: Add SPI FIFO controll constants
  [ARM] 4785/1: S3C24XX: Add _SHIFT definitions for S3C2410_BANKCON registers
  [ARM] 4784/1: S3C24XX: Fix GPIO restore glitches
  [ARM] 4783/1: S3C24XX: Add s3c2410_gpio_getpull()
  [ARM] 4782/1: S3C24XX: Define FIQ_START for any FIQ users
  [ARM] 4781/1: S3C24XX: DMA suspend and resume support
  [ARM] 4780/1: S3C2412: Allow for seperate DMA channels for TX and RX
  [ARM] 4779/1: S3C2412: Add s3c2412_gpio_set_sleepcfg() call
  [ARM] 4778/1: S3C2412: Add armclk and init from DVS state
  [ARM] 4777/1: S3C24XX: Ensure clk_set_rate() checks the set_rate method for the clk
  [ARM] 4775/1: s3c2410: fix compilation error if only s3c2442 cpu is selected
  ...

* sa1100:
  [ARM] sa1100: add clock source support

* vfp:
  [ARM] 4584/2: ARMv7: Add Advanced SIMD (NEON) extension support
  [ARM] 4583/1: ARMv7: Add VFPv3 support
  [ARM] 4582/2: Add support for the common VFP subarchitecture
2008-01-28 13:21:21 +00:00
Ben Dooks
06dbbd69f9 [ARM] 4795/1: S3C244X: Add armclk and setparent call
Add armclk to the supported clocks on the S3C2440 and S3C2442 to
better represent the DVS state which controls whether FCLK or HCLK
is fed to the ARM core.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:52 +00:00
Ben Dooks
3a38e4be76 [ARM] 4794/1: S3C24XX: Comonise S3C2440 and S3C2442 clock code
Merge together the bits of the S3C2440 and S3C2442 clock code
that can be.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:52 +00:00
Ben Dooks
c27cb681ac [ARM] 4793/1: S3C24XX: Add IRQ->GPIO pin mapping function
Add the reverse of s3c2410_gpio_getirq to convert
a IRQ  number into a GPIO pin number.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:52 +00:00
Ben Dooks
9b8c008840 [ARM] 4792/1: S3C24XX: Remove warnings from debug-macro.S
Remove warnings left in include/asm-arm/arch-s3c2410/debug-macro.S
whilst these where being experimented with.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:52 +00:00
Ben Dooks
ddd870bdb7 [ARM] 4791/1: S3C2412: Make fclk a parent of msysclk
In the S3C2412 fclk is derived from msysclk, not straight from
the MPLL output. Set clk_f.parent appropriately.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:52 +00:00
Ben Dooks
cca851d7b4 [ARM] 4790/1: S3C2412: Fix parent selection for msysclk.
The msysclk clock was checking for the wrong PLL for the
parent in s3c2412_setparent_msysclk(), trying the UPLL instead
of the MPLL output.

Also ensure the mpll and fclks are at the same rate at init time.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:52 +00:00
Ben Dooks
e95f52cd3b [ARM] 4789/1: S3C2412: Add missing CLKDIVN register values
Add S3C2412_CLKDIVN_DVSEN and S3C2412_CLKDIVN_HALFHCLK definitions to
the S3C2412_CLKDIVN set.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:52 +00:00
Ben Dooks
046c9d321f [ARM] 4788/1: S3C24XX: Fix paramet to s3c2410_dma_ctrl if S3C2410_DMAF_AUTOSTART used.
Fix the channel parameter to s3c2410_dma_ctrl() in s3c2410_dma_enqueue()
if the S3C2410_DMAF_AUTOSTART is set on the channel.

Spotted by Steven Ryu at Samsung.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:51 +00:00
Ben Dooks
a07c438faf [ARM] 4787/1: S3C24XX: s3c2410_dma_request() should return the allocated channel number
The s3c2410_dma_request() function should return the channel allocated
instead of zero for success.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:51 +00:00
Ben Dooks
db9b85c527 [ARM] 4786/1: S3C2412: Add SPI FIFO controll constants
Add control constants for the S3C2412 SPI unit FIFO.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:51 +00:00
Ben Dooks
e5812bf668 [ARM] 4785/1: S3C24XX: Add _SHIFT definitions for S3C2410_BANKCON registers
Add definitions to allow easier decomposotion of the contents of
the S3C2410_BANKON registers

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:51 +00:00
Ben Dooks
62feee648c [ARM] 4784/1: S3C24XX: Fix GPIO restore glitches
The core resume code may have caused glitches in the GPIO when
restoring the GPIO state due to the order in which the GPIO registers
were being written.

Change the restore process take into account the state of the
GPIOs on resume and the state the system wants to restore them to.

See the code comments in the patch for more details of the process.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:51 +00:00
Ben Dooks
bb6d9b56c1 [ARM] 4783/1: S3C24XX: Add s3c2410_gpio_getpull()
Add the call s3c2410_gpio_getpull() to return the
current state of the pin's pull-up.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:51 +00:00
Ben Dooks
9f613be4a9 [ARM] 4782/1: S3C24XX: Define FIQ_START for any FIQ users
Ensure FIQ_START is defined to allow anyone to use FIQ code on
an S3C24XX based CPU.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:51 +00:00
Ben Dooks
c58f7a1d36 [ARM] 4781/1: S3C24XX: DMA suspend and resume support
If an DMA channel was active at suspend, then ensure that
it is correctly reconfigured when the system resumes.

Note, the previous policy was for each driver to handle their
own reconfiguration on resume. The policy has been changed to
make the individual driver's job easier.

Signed-off-by: Ben Dooks <ben-linux@flfuf.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:51 +00:00
Ben Dooks
c6709e8ef5 [ARM] 4780/1: S3C2412: Allow for seperate DMA channels for TX and RX
The current S3C24XX DMA code does not allow for an peripheral
that has one channel for RX and another for TX.

This patch adds a per-cpu dma operation to select the transmit
or receive channel, and adds support to the S3C2412 for the
seperate DMA channels for TX and RX.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:50 +00:00
Ben Dooks
67d729adc0 [ARM] 4779/1: S3C2412: Add s3c2412_gpio_set_sleepcfg() call
Add s3c2412_gpio_set_sleepcfg() to allow the setting of the sleep
configuration of the GPIO blocks.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:50 +00:00
Ben Dooks
bdbea34ddd [ARM] 4778/1: S3C2412: Add armclk and init from DVS state
Add armclk to the S3C2412 to indicate the current clock connected to
the ARM core.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:50 +00:00
Ben Dooks
57c1b0f8db [ARM] 4777/1: S3C24XX: Ensure clk_set_rate() checks the set_rate method for the clk
Add checks for clk_set_rate() and ensure that we do not allow set_rate
to be called for a clock that does not have it defined. Add default
methods for fclk, hclk, pclk and mpll.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:50 +00:00
Krzysztof Helt
f7275dac55 [ARM] 4775/1: s3c2410: fix compilation error if only s3c2442 cpu is selected
This patch fixes compilation error if only a machine with
s3c2442 cpu is selected but without s3c2440 cpu selected.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:50 +00:00
Ben Dooks
332349518f [ARM] 4731/1: S3C2412: Check for incomplete sleep
Check if the sleep command returns due to a pending interrupt
in the standby unit. If this happens, try and ack the IRQ
before re-trying the resume.

It is currently unclear whether the resume can be backed out
of at this stage as this could cause a problem with level
based interrupts.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:50 +00:00
Ben Dooks
0baada2742 [ARM] 4730/1: S3C2412: Ensure the PWRCFG has the right mode for RTC wake
Ensure that if the RTC IRQ is not selected for wake in the
base configuration, then the PWRCFG has the same value set
in it.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:50 +00:00
Ben Dooks
8e3007a0e8 [ARM] 4729/1: VR1000: Do not add IIS device on initialisation
The IIS device is being registered by the Simtec Audio
driver, and thus registering here causes an error due
to device tree naming collision.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:49 +00:00
Ben Dooks
b6a175a562 [ARM] 4728/1: BAST: Do not add IIS device on initialisation
The IIS device is being registered by the Simtec Audio
driver, and thus registering here causes an error due
to device tree naming collision.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:49 +00:00
Ben Dooks
0953612a47 [ARM] 4727/1: S3C2412: Remove unused GPESLPCON
S3C2412_GPESLPCON does not exist in the register
mappings, so remove it.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:49 +00:00
Ben Dooks
b708d7bf18 [ARM] 4726/1: S3C2412: IIS register definitions
The S3C2412 IIS engine differs from the previous
SoC in the range, so add a set of register definitions
in a seperate file for it.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:49 +00:00
Ben Dooks
d45c30cb4c [ARM] 4725/1: S3C2412: Fix IIS and SDI definitions in DMA map
The IIS and SDI register hw_addr definitions are
incorrect in the DMA map for the S3C2412.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:49 +00:00
Ben Dooks
71e5b2f154 [ARM] 4724/1: S3C2412: Select S3C2410 base GPIO implementation
The S3C2412 GPIO is similar enough to the S3C2410 that
it can use it as a base for GPIO functionality.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:49 +00:00
Ben Dooks
9cbae12cca [ARM] 4723/1: BAST: Fix LCD driver default display setting
We have a default display set to 4, when we only have
three registered displays. Fix this argument (a seperate
patch has been generated to ensure that the LCD driver
takes notice of this bug)

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:49 +00:00
Ben Dooks
ff44b49b55 [ARM] 4722/1: S3C24XX: Improve output if watchdog reset fails
If the watchdog reset fails and we decided to take the jump
to zero approach, allow 50ms for the UARTS to drain the FIFOs
before calling into a bootloader that may flush the output.

Also reduece the waits and the timeout values as 5 seconds is
rather long.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:49 +00:00
Ben Dooks
d652074ebc [ARM] 4721/1: S3C24XX: Ensure watchdog clock is enbaled for hard reset
If the hard reset routine is using the watchdog, then
ensure that the clock for the watchdog has been enabled
before we try and issue a reset.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:48 +00:00
Ben Dooks
cf08167c82 [ARM] 4720/1: S3C2412: Add power configuration registers for battery flat behaviour.
Add the S3C2412_PWRCFG values for the action taken on detecting that
the battery is flat.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:48 +00:00
Ben Dooks
1fb4e5611a [ARM] 4719/1: S3C2412: Update SPI register definitions for the S3C2412
Add S3C2412 register definitions.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:48 +00:00
Dmitry Baryshkov
e01dbdb40e [ARM] 4776/1: Add HWUART clock to fix hwuart support
This adds back the registration of HWUART clock on pxa25x

Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 12:39:48 +00:00
Russell King
cd4c1eb510 [ARM] Fix class_device damage caused by 0c55445f20
Lots of compile errors in drivers/mfd/ucb1x00-assabet.c...

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 10:59:09 +00:00
Russell King
193c3cc125 [ARM] Fix timer damage from d3d74453c3
Move the xtime write mode seqlock into timer_tick(), so it only
surrounds the call to do_timer().

This avoids a deadlock in update_process_times() ...
hrtimer_get_softirq_time() which tries to get a read mode seqlock
on xtime, thereby preventing booting.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 10:17:12 +00:00
eric miao
6232be32af [ARM] 4763/1: pxa: fix pxa3xx_get_clk_frequency_khz() to return KHz
The original code incorrectly returns Hz instead of KHz.

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 10:14:53 +00:00
Linus Torvalds
91525300ba Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6: (54 commits)
  MAINTIANERS: just use Mike gmail e-mail for contact and pawn the serial driver off onto Sonic
  [Blackfin] arch: remove old I2C BF54x porting.
  [Blackfin] arch: Add the semtimedop syscall.  Upstream uClibc doesn't compile without it.
  [Blackfin] arch: fix bug kernel boot message: memory information is not reasonable
  [Blackfin] arch: use common flash driver to setup partitions rather than the bf5xx-flash driver
  [Blackfin] arch: Fix bug - kernel build with Debug option enabled fails to boot up
  [Blackfin] arch: Fix bug Only RTC interrupt can wake up deeper sleep core.
  [Blackfin] arch: Add proper SW System Reset delay sequence
  [Blackfin] arch: Update copyright date
  [Blackfin] arch: GPIO API cleanup and anomaly update
  [Blackfin] arch: Fix BUG gpio_direction_output API is not compatitable with GENERIC_GPIO API interface
  [Blackfin] arch: Initial checkin of the memory protection support.
  [Blackfin] arch: set_bfin_dma_config shouldnt set SYNC or RESTART by default - add argument or option
  [Blackfin] arch: Add some comments - fix semicolons
  [Blackfin] arch: move all code related to CPLB handling into a new subdirectory under kernel/
  [Blackfin] arch: print out list of modules if kernel is crashing and tell people if the kernel is tainted 
  [Blackfin] arch: enable generic GPIO based I2C driver in STAMP-BF533, EZKIT-BF533 and EZKIT-BF561 boards
  [Blackfin] arch: Don't oops_in_progress if single step is comming from the kernel
  [Blackfin] arch: Fix BUG - kernel sometimes would stuck with KEYBOARD_GPIO on
  [Blackfin] arch: update to latest anomaly sheets
  ...
2008-01-28 08:15:24 +11:00
David Brownell
eaf858a988 [ARM] 4615/4: sam926[13]ek buttons updated
From: Nicolas Ferre <nicolas.ferre@rfo.atmel.com>

On the at92sam9263ek board, tell the input subsystem about the buttons.
This patch is taken from Andrew Victor's at91 patchset, then updated to
match the latest kernel code and to use labels printed on the board.

Also update the at91sam9261ek buttons to cope with input changes.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-27 17:54:16 +00:00
Kalle Pokki
991dee591a i2c-bfin-twi: Register adapter with a specific bus number
All the users of this driver explicitly specify the I2C bus numbers
to be used in their platform data. Make the driver respect that.

Signed-off-by: Kalle Pokki <kalle.pokki@eke.fi>
Cc: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-01-27 18:14:52 +01:00
Manuel Lauss
8b798c4d16 i2c-au1550: Convert to platform driver
Convert the i2c-au1550 bus driver to platform driver, and
register a platform device for the Alchemy Db/Pb series of
boards.

Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-01-27 18:14:52 +01:00
Manuel Lauss
91f27958d6 i2c-au1550: properly terminate zero-byte transfers
Zero-bytes transfers would leave the bus transaction unfinished
(no i2c stop is sent), with the following transfer actually
sending the slave address to the previously addressed device,
resulting in weird device failures (e.g. reset minute register
values in my RTC).
This patch instructs the controller to send an I2C STOP right after
the slave address in case of a zero-byte transfer.

Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-01-27 18:14:52 +01:00
Jon Smirl
4bd28ebda2 mpc-i2c: Propagate error values properly
Propagate the error values returned by i2c_wait() instead of overriding
them with a meaningless -1.

Signed-off-by: Jon Smirl <jonsmirl@gmail.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-01-27 18:14:52 +01:00
David Brownell
e9f1373b64 i2c: Add i2c_new_dummy() utility
This adds a i2c_new_dummy() primitive to help work with devices
that consume multiple addresses, which include many I2C eeproms
and at least one RTC.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-01-27 18:14:52 +01:00
Jean Delvare
0b987dcd3a i2c: Drop legacy locking in i2c_new_probed_device
It is no longer required to hold adapter->clist_lock to call
i2c_check_addr.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: David Brownell <david-b@pacbell.net>
2008-01-27 18:14:52 +01:00
Jean Delvare
9ddced16bb i2c: Limit locking scope in i2c_detach_client
We only need to hold adapter->clist_lock when we touch the client list.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-01-27 18:14:51 +01:00
David Brownell
86ec5ec872 i2c-remove-redundant-i2c_client-list.patch
This goes on top of the patch removing most i2c_adapter.clients usage,
updating i2c_attach_client:

 - Don't call device_register() while holding clist_lock.  This
   removes a self-deadlock when on the i2c_driver.probe() path,
   for drivers that need to attach new devices (e.g. dummies).

 - Remove a redundant address check.  The driver model core does
   this as a consequence of guaranteeing unique names.

 - Move the "device registered" diagnostic so that it never lies;
   previously, on error paths it would falsely report success.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-01-27 18:14:51 +01:00
Jean Delvare
961f80f9c0 i2c: Drivers stop using the redundant client list
The redundant i2c client list maintained by i2c-core is going away
soon, so drivers should stop using it now. Instead, they can use the
standard iterator provided by the device driver model
(device_for_each_child).

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: David Brownell <david-b@pacbell.net>
Cc: Michael Hunold <michael@mihu.de>
2008-01-27 18:14:51 +01:00
David Brownell
9b766b814d i2c: Stop using the redundant client list
The i2c_adapter.clients list of i2c_client nodes duplicates driver
model state.  This patch starts removing that list, letting us remove
most existing users of those i2c-core lists.

 * The core I2C code now iterates over the driver model's list instead
   of the i2c-internal one in some places where it's safe:
      - Passing a command/ioctl to each client, a mechanims
        used almost exclusively by DVB adapters;
      - Device address checking, in both i2c-core and i2c-dev.

 * Provide i2c_verify_client() to use with driver model iterators.

 * Flag the relevant i2c_adapter and i2c_client fields as deprecated,
   to help prevent new users from appearing.

For the moment the list needs to stick around, since some issues show
up when deleting devices created by legacy I2C drivers.  (They don't
follow standard driver model rules.  Removing those devices can cause
self-deadlocks.)

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-01-27 18:14:51 +01:00