Commit Graph

32 Commits

Author SHA1 Message Date
Laurent Pinchart af504e5d39 ARM: OMAP: I2C: Fix omap_register_i2c_bus() return value on success
Commit 4d17aeb1c5 ("OMAP: I2C: split
device registration and convert OMAP2+ to omap_device") makes
omap2_i2c_add_bus() return a pointer to an omap_device instead on
success instead of 0.

This breaks the omap_register_i2c_bus() ABI and results in the igep0020
board code detecting an I2C bus registration error when there is none.

Fix the problem by using PTR_RET() instead of PTR_ERR() in
omap2_i2c_add_bus().

Reported-by: Alexander Kinzer <a.kinzer@plusoptix.de>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
[tony@atomide.com: updated to return pdev instead of od]
Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-11-04 17:41:07 -07:00
Linus Torvalds 81a3c10ce8 Merge branch 'next/cleanup2' of git://git.linaro.org/people/arnd/arm-soc
* 'next/cleanup2' of git://git.linaro.org/people/arnd/arm-soc: (31 commits)
  ARM: OMAP: Warn if omap_ioremap is called before SoC detection
  ARM: OMAP: Move set_globals initialization to happen in init_early
  ARM: OMAP: Map SRAM later on with ioremap_exec()
  ARM: OMAP: Remove calls to SRAM allocations for framebuffer
  ARM: OMAP: Avoid cpu_is_omapxxxx usage until map_io is done
  ARM: OMAP1: Use generic map_io, init_early and init_irq
  arm/dts: OMAP3+: Add mpu, dsp and iva nodes
  arm/dts: OMAP4: Add a main ocp entry bound to l3-noc driver
  ARM: OMAP2+: l3-noc: Add support for device-tree
  ARM: OMAP2+: board-generic: Add i2c static init
  ARM: OMAP2+: board-generic: Add DT support to generic board
  arm/dts: Add support for OMAP3 Beagle board
  arm/dts: Add initial device tree support for OMAP3 SoC
  arm/dts: Add support for OMAP4 SDP board
  arm/dts: Add support for OMAP4 PandaBoard
  arm/dts: Add initial device tree support for OMAP4 SoC
  ARM: OMAP: omap_device: Add a method to build an omap_device from a DT node
  ARM: OMAP: omap_device: Add omap_device_[alloc|delete] for DT integration
  of: Add helpers to get one string in multiple strings property
  ARM: OMAP2+: devices: Remove all omap_device_pm_latency structures
  ...

Fix up trivial header file conflicts in arch/arm/mach-omap2/board-generic.c
2011-11-01 20:58:25 -07:00
Linus Torvalds 952414505f Merge branch 'next/cleanup' of git://git.linaro.org/people/arnd/arm-soc
* 'next/cleanup' of git://git.linaro.org/people/arnd/arm-soc: (125 commits)
  ARM: mach-mxs: fix machines' initializers order
  mmc: mxcmmc: explicitly includes mach/hardware.h
  arm/imx: explicitly includes mach/hardware.h in pm-imx27.c
  arm/imx: remove mx27_setup_weimcs() from mx27.h
  arm/imx: explicitly includes mach/hardware.h in mach-kzm_arm11_01.c
  arm/imx: remove mx31_setup_weimcs() from mx31.h
  ARM: tegra: devices.c should include devices.h
  ARM: tegra: cpu-tegra: unexport two functions
  ARM: tegra: cpu-tegra: sparse type fix
  ARM: tegra: dma: staticify some tables and functions
  ARM: tegra: tegra2_clocks: don't export some tables
  ARM: tegra: tegra_powergate_is_powered should be static
  ARM: tegra: tegra_rtc_read_ms should be static
  ARM: tegra: tegra_init_cache should be static
  ARM: tegra: pcie: 0 -> NULL changes
  ARM: tegra: pcie: include board.h
  ARM: tegra: pcie: don't cast __iomem pointers
  ARM: tegra: tegra2_clocks: 0 -> NULL changes
  ARM: tegra: tegra2_clocks: don't cast __iomem pointers
  ARM: tegra: timer: don't cast __iomem pointers
  ...

Fix up trivial conflicts in
  arch/arm/mach-omap2/Makefile,
  arch/arm/mach-u300/{Makefile.boot,core.c}
  arch/arm/plat-{mxc,omap}/devices.c
2011-11-01 20:11:00 -07:00
Andy Green 8e286f5a21 I2C: OMAP1: set i2c unit feature implementation flags in platform data
Most of the OMAP1 implementation flags are set statically, with the
exception that omap7xx has its data bus wired up differently.

Cc: patches@linaro.org
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andy Green <andy.green@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-10-29 09:37:08 +01:00
Andy Green 029a1e73cd I2C: OMAP2+: Pass flags up to omap i2c platform_data as well
This is how the driver can find the flags for its implementation
functionality in its platform_data

Cc: patches@linaro.org
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andy Green <andy.green@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-10-29 09:37:08 +01:00
Andy Green d177e5ddb8 I2C: OMAP2+: Pass hwmod rev knowledge via platform_data when i2c bus added
Mark each OMAP I2C bus with the hwmod's knowledge of which I2C
IP version is in the chip we're running on.

Cc: patches@linaro.org
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andy Green <andy.green@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-10-29 09:37:07 +01:00
Andy Green 67b90c6720 I2C: OMAP1: set IP revision in platform data
All OMAP1 are using "IP revision 1" in terms of register
layout.  We set this information in omap1_i2c_add_bus() so
we don't have to use cpu_is_xxx() any more in the omap i2c
driver.

Cc: patches@linaro.org
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andy Green <andy.green@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-10-29 09:37:07 +01:00
Benoit Cousson f718e2c034 ARM: OMAP2+: devices: Remove all omap_device_pm_latency structures
Remove all these duplicated structures since a default one is now
available.

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-10-04 09:52:23 -07:00
Kevin Hilman 3528c58eb9 OMAP: omap_device: when building return platform_device instead of omap_device
All of the device init and device driver interaction with omap_device
is done using platform_device pointers.  To make this more explicit,
have omap_device return a platform_device pointer instead of an
omap_device pointer.

All current users of the omap_device pointer were only using it to get
at the platform_device pointer or struct device pointer, so fixing all
of the users was trivial.

This also makes it more difficult for device init code to directly
access members of struct omap_device, and allows for easier changing
of omap_device internals.

Cc: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-09-15 16:35:46 -07:00
Felipe Balbi 790a26f65b arm: omap: i2c: fix compile warning
Fix the following compile warning:
arch/arm/plat-omap/i2c.c:120:13: warning:
'omap_pm_set_max_mpu_wakeup_lat_compat' defined but not used
arch/arm/plat-omap/i2c.c:125:38: warning: 'omap_i2c_latency'
defined but not used

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-01-27 16:39:41 -08:00
Benoit Cousson f7bb0d9ab2 I2C: i2c-omap: Change device name: i2c_omap -> omap_i2c
The convention for omap device naming is omap_XXX.

Rename the device and driver name in order to stick
to this naming convention.

Change device name in clock nodes as well.

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Rajendra Nayak <rnayak@ti.com>
Cc: Ben Dooks <ben-i2c@fluff.org>
Acked-by: Paul Walmsley <paul@pwsan.com>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-12-20 17:53:04 -08:00
Tony Lindgren be40f7a3d7 omap: Fix undefined reference to omap2_i2c_mux_pins
In some cases we can get error function `omap2_i2c_add_bus':
arch/arm/plat-omap/i2c.c:136: undefined reference to `omap2_i2c_mux_pins'
arch/arm/plat-omap/i2c.c:141: undefined reference to `omap_hwmod_lookup'
arch/arm/plat-omap/i2c.c:157: undefined reference to `omap_device_build'

Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-12-07 16:25:40 -08:00
Paul Walmsley 00b4ade1f1 OMAP1: I2C: fix device initialization
Commit 4d17aeb1c5 ("OMAP: I2C: split
device registration and convert OMAP2+ to omap_device") broke I2C on
OMAP1.  The following messages appear at boot:

i2c_omap i2c_omap.1: failure requesting irq 0
i2c_omap: probe of i2c_omap.1 failed with error -22

Investigation revealed that a chunk of code is missing from the
original plat-omap/i2c.c file which configured the IRQ and base address
for the I2C block on OMAP1.  Upon adding this back, the OMAP1 I2C block
seems to initialize correctly.

Thanks to Cory Maccarrone <darkstar6262@gmail.com> for reporting the bug,
and apologies for the breakage.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Tested-by: Cory Maccarrone <darkstar6262@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-12-07 14:39:02 -08:00
Paul Walmsley 4d17aeb1c5 OMAP: I2C: split device registration and convert OMAP2+ to omap_device
Split the OMAP1 and OMAP2+ platform_device build and register code.
Convert the OMAP2+ variant to use omap_device.

This patch was developed in collaboration with Rajendra Nayak
<rnayak@ti.com>.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-11-09 09:31:10 -08:00
Paul Walmsley 564889c1c0 OMAP: PM constraints: add return values; add requesting device param to omap_pm_set_max_dev_wakeup_lat()
Add return values to the PM constraint functions.  This allows the PM
core to provide feedback to the caller if a constraint is not
possible.  Update the one upstream user of omap_pm_set_max_mpu_wakeup_lat()
to add a compatibility wrapper, needed until the driver is changed.

Update some of the documentation to conform more closely to kerneldoc style.

Add an additional device parameter to omap_pm_set_max_dev_wakeup_lat()
to identify the device requesting the constraint.  This is so repeated calls
to omap_pm_set_max_dev_wakeup_lat() with the same requesting device can
override the device's previously-set constraint.  Also, it allows the PM
core to make a decision as to whether or not the constraint should be
satisfied, based on the caller's identity.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
2010-07-26 16:34:34 -06:00
Tony Lindgren 6daa642d9b omap4: Add support for i2c init
Add support for i2c init for omap4.

This patch is based on and earlier patch by
Santosh Shilimkar <santosh.shilimkar@ti.com>.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-05-20 11:36:43 -07:00
Tony Lindgren b32dd41ed6 omap: Fix i2c platform init code for omap4
Add separate omap_i2c_add_bus functions for mach-omap1
and mach-omap2. Make the mach-omap2 init set the interrupt
dynamically to support.

This is needed to add support for omap4 in a way that
works with multi-omap builds. This will eventually get
fixed in a generic way with the omap hwmods.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-05-20 11:36:43 -07:00
Kalle Jokiniemi 20c9d2c4ab i2c-omap: add mpu wake up latency constraint in i2c
While waiting for completion of the i2c transfer, the
MPU could hit OFF mode and cause several msecs of
delay that made i2c transfers fail more often. The
extra delays and subsequent re-trys cause i2c clocks
to be active more often. This has also an negative
effect on power consumption.

Created a mechanism for passing and using the
constraint setting function in driver code. The used
mpu wake up latency constraints are now set individually
per bus, and they are calculated based on clock rate
and fifo size.

Thanks to Jarkko Nikula, Moiz Sonasath, Paul Walmsley,
and Nishanth Menon for tuning out the details of
this patch.

Updates by Kevin as requested by Tony:

- Remove omap_set_i2c_constraint_func() in favor of conditionally
  adding the flag in omap_i2c_add_bus() in order to keep all the OMAP
  conditional checking in a single location.
- Update set_mpu_wkup_lat prototypes to match OMAP PM layer so
  OMAP PM function can be used directly in pdata.

Cc: Moiz Sonasath <m-sonasath@ti.com>
Cc: Jarkko Nikula <jhnikula@gmail.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Nishanth Menon <nm@ti.com>
Signed-off-by: Kalle Jokiniemi <kalle.jokiniemi@digia.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-20 00:18:59 +01:00
Jarkko Nikula 9833eff3d7 omap: i2c: Fix muxing for command line enabled bus
The commit b63128e812 broke the pin muxing
for I2C busses that are enabled from the kernel command line.

Fix this by defining the board registration function omap_register_i2c_bus
in common platform code as it was before but keep the muxing in architecture
dependent files.

Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-25 14:45:08 -08:00
Tony Lindgren a8eb7ca0cb omap3: Replace ARCH_OMAP34XX with ARCH_OMAP3
Replace ARCH_OMAP34XX with ARCH_OMAP3

Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-15 09:27:02 -08:00
Tony Lindgren 088ef950dc omap2: Convert ARCH_OMAP24XX to ARCH_OMAP2
Convert ARCH_OMAP24XX to ARCH_OMAP2

Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-15 09:27:01 -08:00
Tony Lindgren b63128e812 omap: Split i2c platform init for mach-omap1 and mach-omap2
Otherwise we cannot limit new mux code to mach-omap2.
The same signal names should eventually work for other
omaps under mach-omap2.

Note that these pins don't need to be OMAP_PIN_INPUT_PULLUP,
just OMAP_PIN_INPUT is enough.

Cc: Jarkko Nikula <jhnikula@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-12-11 16:16:32 -08:00
Tony Lindgren ce491cf854 omap: headers: Move remaining headers from include/mach to include/plat
Move the remaining headers under plat-omap/include/mach
to plat-omap/include/plat. Also search and replace the
files using these headers to include using the right path.

This was done with:

#!/bin/bash
mach_dir_old="arch/arm/plat-omap/include/mach"
plat_dir_new="arch/arm/plat-omap/include/plat"
headers=$(cd $mach_dir_old && ls *.h)
omap_dirs="arch/arm/*omap*/ \
drivers/video/omap \
sound/soc/omap"
other_files="drivers/leds/leds-ams-delta.c \
drivers/mfd/menelaus.c \
drivers/mfd/twl4030-core.c \
drivers/mtd/nand/ams-delta.c"

for header in $headers; do
	old="#include <mach\/$header"
	new="#include <plat\/$header"
	for dir in $omap_dirs; do
		find $dir -type f -name \*.[chS] | \
			xargs sed -i "s/$old/$new/"
	done
	find drivers/ -type f -name \*omap*.[chS] | \
		xargs sed -i "s/$old/$new/"
	for file in $other_files; do
		sed -i "s/$old/$new/" $file
	done
done

for header in $(ls $mach_dir_old/*.h); do
	git mv $header $plat_dir_new/
done

Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-20 09:40:47 -07:00
Jarkko Nikula ddf25dfe3a ARM: OMAP: Update contact address of I2C registration helper
This email address is going to expire soon so update it.

Signed-off-by: Jarkko Nikula <jarkko.nikula@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-05-25 11:08:43 -07:00
Jarkko Nikula 7954763bb9 ARM: OMAP: Add method to register additional I2C busses on the command line, v2
This patch extends command line option "i2c_bus=bus_id,clkrate" so that
it allow to register additional I2C busses that are not registered with
omap_register_i2c_bus from board initialization code.

Purpose of this is to register additional board busses which are routed
to external connectors only without any on board I2C devices.

Cc: linux-i2c@vger.kernel.org
Signed-off-by: Jarkko Nikula <jarkko.nikula@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-03-23 18:51:20 -07:00
Jarkko Nikula 3a853fb933 ARM: OMAP: Add command line option for I2C bus speed, v2
This patch adds a new command line option "i2c_bus=bus_id,clkrate" into
I2C bus registration helper. Purpose of the option is to override the
default board specific bus speed which is supplied by the
omap_register_i2c_bus.

The default bus speed is typically set to speed of slowest I2C chip on the
bus and overriding allow to use some experimental configurations or updated
chip versions without any kernel modifications.

Cc: linux-i2c@vger.kernel.org
Signed-off-by: Jarkko Nikula <jarkko.nikula@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-03-23 18:51:20 -07:00
Jarkko Nikula d4c58bf45a ARM: OMAP: Add documentation for function omap_register_i2c_bus
Signed-off-by: Jarkko Nikula <jarkko.nikula@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-03-23 18:51:19 -07:00
Russell King 80b02c172b [ARM] fix AT91, davinci, h720x, ks8695, msm, mx2, mx3, netx, omap1, omap2, pxa, s3c
arch/arm/mach-at91/at91cap9.c:337: error: 'NR_AIC_IRQS' undeclared here (not in a function)
arch/arm/mach-at91/at91rm9200.c:301: error: 'NR_AIC_IRQS' undeclared here (not in a function)
arch/arm/mach-at91/at91sam9260.c:351: error: 'NR_AIC_IRQS' undeclared here (not in a function)
arch/arm/mach-at91/at91sam9261.c:287: error: 'NR_AIC_IRQS' undeclared here (not in a function)
arch/arm/mach-at91/at91sam9263.c:312: error: 'NR_AIC_IRQS' undeclared here (not in a function)
arch/arm/mach-at91/at91sam9rl.c:304: error: 'NR_AIC_IRQS' undeclared here (not in a function)
arch/arm/mach-h720x/h7202-eval.c:38: error: implicit declaration of function 'IRQ_CHAINED_GPIOB'
arch/arm/mach-ks8695/devices.c:46: error: 'KS8695_IRQ_WAN_RX_STATUS' undeclared here (not in a function)
arch/arm/mach-msm/devices.c:28: error: 'INT_UART1' undeclared here (not in a function)
arch/arm/mach-mx2/devices.c:233: error: 'MXC_GPIO_IRQ_START' undeclared here (not in a function)
arch/arm/mach-mx3/devices.c:128: error: 'MXC_GPIO_IRQ_START' undeclared here (not in a function)
arch/arm/mach-omap1/mcbsp.c:140: error: 'INT_730_McBSP1RX' undeclared here (not in a function)
arch/arm/mach-omap1/mcbsp.c:165: error: 'INT_McBSP1RX' undeclared here (not in a function)
arch/arm/mach-omap1/mcbsp.c:200: error: 'INT_McBSP1RX' undeclared here (not in a function)
arch/arm/mach-omap2/board-apollon.c:286: error: implicit declaration of function 'omap_set_gpio_direction'
arch/arm/mach-omap2/mcbsp.c:154: error: 'INT_24XX_MCBSP1_IRQ_RX' undeclared here (not in a function)
arch/arm/mach-omap2/mcbsp.c:181: error: 'INT_24XX_MCBSP1_IRQ_RX' undeclared here (not in a function)
arch/arm/mach-pxa/e350.c:36: error: 'IRQ_BOARD_START' undeclared here (not in a function)
arch/arm/plat-s3c/dev-i2c0.c:32: error: 'IRQ_IIC' undeclared here (not in a function)
...

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-01-08 16:29:42 +00:00
Jarkko Nikula ad636ad84e ARM: OMAP3: Add OMAP34xx pin multiplexing into I2C bus registration helper
- Simplify function omap_i2c_mux_pins
- Add OMAP34xx pin multiplexing for busses 1 - 3

Signed-off-by: Jarkko Nikula <jarkko.nikula@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-12-10 17:36:52 -08:00
Russell King a09e64fbc0 [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach
This just leaves include/asm-arm/plat-* to deal with.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-08-07 09:55:48 +01:00
Russell King 0f8469a54f [ARM] Eliminate useless includes of asm/mach-types.h
There are 43 includes of asm/mach-types.h by files that don't
reference anything from that file.  Remove these unnecessary
includes.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-08-07 09:40:04 +01:00
Jarkko Nikula 85d05fb3fd ARM: OMAP: Add helper module for board specific I2C bus registration
This helper module simplifies I2C bus registration for different OMAP
platforms by doing registration in one place only and to allow board
specific bus configuration like clock rate and number of busses configured.

Helper should cover OMAP processors from first to third generation.

This patch just adds the feature and current implementation cleanup and
board file modifications will be done in following patches.

Signed-off-by: Jarkko Nikula <jarkko.nikula@nokia.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-02-08 10:38:00 -08:00