26 Sep, 2014
1 commit
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http://www.ti.com/lit/pdf/SWCZ010:
Glitch on SDA-SCL not managed correctly by the I2C IPImpact:
The standard specifies that the I2C transfer should restart on a start
event in all cases. The current design does not support two consecutive
Start conditions. This can cause the first real access after such a
glitch to be corrupted.Description:
An unexpected glitch on SDA and SCL can generate a wrong start event.
In the current design, the SCL line must toggle two times to detect a
new start event and completely restart the I2C access; hence the real
start event is not detected in the case of a single SCL toggle.Workaround:
Repeat I2C access.A simpler workaround is to make a dummy transfer just before the first
access to the tps65910 chip. This can be done unconditionally.Signed-off-by: Arnout Vandecappelle (Essensium/Mind)
Acked-by: Mark Brown
Signed-off-by: Lee Jones
09 Jul, 2014
1 commit
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Extinguishes:
../drivers/mfd/tps65910.c: In function ‘tps65910_parse_dt’:
../drivers/mfd/tps65910.c:404:14:
warning: cast from pointer to integer of different sizeSigned-off-by: Lee Jones
03 Jun, 2014
1 commit
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Make of_device_id array const, because all OF functions
handle it as const.Signed-off-by: Jingoo Han
Signed-off-by: Lee Jones
19 Mar, 2014
2 commits
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The tps65910_i2c_probe() allocates regmap_irq_chip in
tps65910_irq_init() but it does not clean this up in case of
mfd_add_devices() failure.Signed-off-by: Krzysztof Kozlowski
Signed-off-by: Lee Jones -
Fixes: 4aab3fadad32 ("mfd: tps65910: Move interrupt implementation code to mfd file")
tps65910_irq_init() sets 'tps65910->chip_irq' before calling
regmap_add_irq_chip(). If the regmap_add_irq_chip() call fails in
memory allocation of regmap_irq_chip_data members then:1. The 'tps65910->chip_irq' will still hold some value
2. 'tps65910->irq_data' will be pointing to already freed memory
(because regmap_add_irq_chip() will free it on error)This results in invalid memory access during driver remove because the
tps65910_irq_exit() tests whether 'tps65910->chip_irq' is not zero.Cc:
Signed-off-by: Krzysztof Kozlowski
Signed-off-by: Lee Jones
06 Jan, 2014
1 commit
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As of commit 03e361b25ee8dfb1fd9b890072c23c4aae01c6c7 ("mfd: Stop setting
refcounting pointers in original mfd_cell arrays"), the "cell" parameter of
mfd_add_devices() is "const" again. Hence make all cell data passed to
mfd_add_devices() const where possible.Signed-off-by: Geert Uytterhoeven
Signed-off-by: Lee Jones
25 Oct, 2013
1 commit
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mfd-lee-3.13-1
MFD patches due for v3.13.
24 Oct, 2013
1 commit
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Driver throw the warning message if dt node does not
have the info for VMBCH-Threshold and VMBCH2-Threshold.
These properties are optional property and hence it
is not mandatory to have these on DT node and in this case
it should not throw the warning message.
It creates noise from driver as follows:
[ 0.384605] tps65910 4-002d: VMBCH-Threshold not specified
[ 0.384616] tps65910 4-002d: VMBCH2-Threshold not specifiedRemoving the warning message from driver.
Signed-off-by: Laxman Dewangan
Signed-off-by: Samuel Ortiz
23 Oct, 2013
1 commit
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'of_match_ptr' is defined in linux/of.h. Include it explicitly to
avoid breakage in the future.Signed-off-by: Sachin Kamat
Signed-off-by: Lee Jones
17 Dec, 2012
1 commit
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Pull MFS update from Samuel Ortiz:
"This is the MFD patch set for the 3.8 merge window.We have several new drivers, most of the time coming with their sub
devices drivers:- Austria Microsystem's AS3711
- Nano River's viperboard
- TI's TPS80031, AM335x TS/ADC,
- Realtek's MMC/memstick card reader
- Nokia's retuWe also got some notable cleanups and improvements:
- tps6586x got converted to IRQ domains.
- tps65910 and tps65090 moved to the regmap IRQ API.
- STMPE is now Device Tree aware.
- A general twl6040 and twl-core cleanup, with moves to the regmap
I/O and IRQ APIs and a conversion to the recently added PWM
framework.
- sta2x11 gained regmap support.Then the rest is mostly tiny cleanups and fixes, among which we have
Mark's wm5xxx and wm8xxx patchset."Far amount of annoying but largely trivial conflicts. Many due to
__devinit/exit removal, others due to one or two of the new drivers also
having come in through another tree.* tag 'mfd-3.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: (119 commits)
mfd: tps6507x: Convert to devm_kzalloc
mfd: stmpe: Update DT support for stmpe driver
mfd: wm5102: Add readback of DSP status 3 register
mfd: arizona: Log if we fail to create the primary IRQ domain
mfd: tps80031: MFD_TPS80031 needs to select REGMAP_IRQ
mfd: tps80031: Add terminating entry for tps80031_id_table
mfd: sta2x11: Fix potential NULL pointer dereference in __sta2x11_mfd_mask()
mfd: wm5102: Add tuning for revision B
mfd: arizona: Defer patch initialistation until after first device boot
mfd: tps65910: Fix wrong ack_base register
mfd: tps65910: Remove unused data
mfd: stmpe: Get rid of irq_invert_polarity
mfd: ab8500-core: Fix invalid free of devm_ allocated data
mfd: wm5102: Mark DSP memory regions as volatile
mfd: wm5102: Correct default for LDO1_CONTROL_2
mfd: arizona: Register haptics devices
mfd: wm8994: Make current device behaviour the default
mfd: tps65090: MFD_TPS65090 needs to select REGMAP_IRQ
mfd: Fix stmpe.c build when OF is not enabled
mfd: jz4740-adc: Use devm_kzalloc
...
30 Nov, 2012
2 commits
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The interrupt status registers of TPS65910/1 should be cleared
when the associated interrupt event occurs.
This work is done in the regmap irq thread - using 'ack_base' register.
The ACK registers should be fixed as status register, not mask registers.This patch fixes the infinite interrupt event problem by clearing
interrupt status registers.Tested on the AM3517 Craneboard.
Signed-off-by: Milo(Woogyom) Kim
Acked-by: Laxman Dewangan
Signed-off-by: Samuel Ortiz -
The 'io_mutex' is not used anywhere.
The regmap API supports the mutex internally, so no additional mutex
is required.And 'domain' private data is unnecessary because the irq domain is
already registered by using regmap_add_irq_chip().Signed-off-by: Milo(Woogyom) Kim
Acked-by: Laxman Dewangan
Signed-off-by: Samuel Ortiz
29 Nov, 2012
3 commits
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CONFIG_HOTPLUG is going away as an option so __devexit is no
longer needed.Signed-off-by: Bill Pemberton
Cc: Srinidhi Kasagar
Cc: Peter Tyser
Cc: Daniel Walker
Cc: Bryan Huntsman
Acked-by: David Brown
Acked-by: Linus Walleij
Acked-by: Mark Brown
Signed-off-by: Greg Kroah-Hartman -
CONFIG_HOTPLUG is going away as an option so __devinit is no longer
needed.Signed-off-by: Bill Pemberton
Cc: Srinidhi Kasagar
Cc: Peter Tyser
Cc: Daniel Walker
Cc: Bryan Huntsman
Acked-by: David Brown
Acked-by: Mark Brown
Signed-off-by: Greg Kroah-Hartman -
CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer
needed.Signed-off-by: Bill Pemberton
Cc: Srinidhi Kasagar
Cc: Peter Tyser
Cc: Daniel Walker
Cc: Bryan Huntsman
Acked-by: David Brown
Acked-by: Linus Walleij
Acked-by: Mark Brown
Signed-off-by: Greg Kroah-Hartman
20 Nov, 2012
3 commits
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When adding the sub device "tps65910-rtc", is it passed the
IO resource IRQ for the interrupt number. This interrupt needs
to map in the device irq domain. Pass the irq domain of device
in mfd_add_devices() so that proper irq mapping can be done when
adding the sub device RTC.Signed-off-by: Laxman Dewangan
Reviewed-by: Mark Brown
Signed-off-by: Samuel Ortiz -
In place of implementing the irq support in separate file,
moving implementation to main mfd file.
The irq files only contains the table and init steps only
and does not need extra file to have this only for this
purpose.Signed-off-by: Laxman Dewangan
Reviewed-by: Mark Brown
Signed-off-by: Samuel Ortiz -
Add sub devices of tps65910 after all initialization like interrupt,
clock etc. is done. This will make sure that require data gets
initialized properly before sub devices probe's get called.Signed-off-by: Laxman Dewangan
Reviewed-by: Mark Brown
Signed-off-by: Samuel Ortiz
29 Sep, 2012
1 commit
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Add RTC alarm interrupt details to TPS65910 MFD device list, to support
RTC alarm events.Signed-off-by: Venu Byravarasu
Signed-off-by: Samuel Ortiz
14 Sep, 2012
2 commits
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Add DT property "ti,system-power-controller" telling whether or not this
pmic is in charge of controlling the system power, so the power off
routine can be hooked up to system call "pm_power_off".Based on the work by:
Dan WillemsenSigned-off-by: Bill Huang
Tested-by: Stephen Warren
Signed-off-by: Samuel Ortiz -
Currently the MFD core supports remapping MFD cell interrupts using an
irqdomain but only if the MFD is being instantiated using device tree
and only if the device tree bindings use the pattern of registering IPs
in the device tree with compatible properties. This will be actively
harmful for drivers which support non-DT platforms and use this pattern
for their DT bindings as it will mean that the core will silently change
remapping behaviour and it is also limiting for drivers which don't do
DT with this particular pattern. There is also a potential fragility if
there are interrupts not associated with MFD cells and all the cells are
omitted from the device tree for some reason.Instead change the code to take an IRQ domain as an optional argument,
allowing drivers to take the decision about the parent domain for their
interrupts. The one current user of this feature is ab8500-core, it has
the domain lookup pushed out into the driver.Signed-off-by: Mark Brown
Signed-off-by: Samuel Ortiz
16 Jul, 2012
1 commit
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Replace tps65910_misc_init with a dedicated init function for the
32-kHz-crystal input, and make the code more readable.Signed-off-by: Johan Hovold
Signed-off-by: Samuel Ortiz
09 Jul, 2012
2 commits
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Add device-tree entry to enable external 32-kHz crystal oscillator
input.Compile-only tested.
Signed-off-by: Johan Hovold
Signed-off-by: Samuel Ortiz -
Add flag to platform data to enable external 32-kHz crystal oscillator
(or square wave) input.The tps6591x can use either an internal 32-kHz RC oscillator or an
external crystal (or square wave) to generate the 32-kHz clock.The default setting depends on the selected boot mode. In boot mode 00
the internal RC oscillator is used at power-on, but the external crystal
oscillator (or square wave) can be enabled by clearing the ck32k_ctrl
flag in the device control register.Note that there is no way to switch from the external crystal oscillator
to the internal RC oscillator.Signed-off-by: Johan Hovold
Signed-off-by: Samuel Ortiz
23 May, 2012
2 commits
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Remove the parsing of device node information for sub devices
from core file.
The sub devices will parse the information as per the sub-devices
specific information.Signed-off-by: Laxman Dewangan
Signed-off-by: Samuel Ortiz -
Save the allocated memory to store the parsed device node information
to the global device structure so that sub devices can directly use this
pointer.
In this way, the sub devices does not require to re-allocate the
memory for storing the sub-devices specific device node information.Signed-off-by: Laxman Dewangan
Signed-off-by: Samuel Ortiz
20 May, 2012
6 commits
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The tps65910_parse_dt() prototype for !CONFIG_OF was not correct, leading to:
drivers/mfd/tps65910.c: In function ‘tps65910_i2c_probe’:
drivers/mfd/tps65910.c:218:3: error: too many arguments to function ‘tps65910_parse_dt’Signed-off-by: Samuel Ortiz
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As gpio support for tps65910 is on gpio driver, registering
gpio support as the mfd sub devices instead of calling gpio_init()
from the core probe.Signed-off-by: Laxman Dewangan
Signed-off-by: Samuel Ortiz -
Convert memory allocation and regmap initialization to
use devm_* functions.Signed-off-by: Laxman Dewangan
Reviewed-by: Mark Brown
Signed-off-by: Samuel Ortiz -
During regmap initialization, we do not provide the default value and
hence in place of caching register during regmap_init(), cache it
when actually we need it i.e. after reading of that register.Signed-off-by: Laxman Dewangan
Reviewed-by: Mark Brown
Signed-off-by: Samuel Ortiz -
Add device tree based initialization support for TI's tps65910 pmic.
Signed-off-by: Rhyland Klein
Signed-off-by: Samuel Ortiz -
This change removes the read/write callback functions in favor of common
regmap accessors inside the header file. This change also makes use of
regmap_read/write for single register access which maps better onto what this
driver actually needs.Signed-off-by: Rhyland Klein
Signed-off-by: Samuel Ortiz
07 May, 2012
1 commit
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A warning was being generated by the reference from tps65910_i2c_probe()
to tps65910_sleepinit() since the latter was annotated as __init but the
former was unannotated. Since these functions can only be called during
device init make them both __devinit, and while we're at it also annotate
tps65910_i2c_remove() __devexit for symmetry.Signed-off-by: Mark Brown
Signed-off-by: Samuel Ortiz
01 May, 2012
1 commit
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Adding support for device sleep through the external input control
signal "SLEEP".
Changing the SLEEP signal state can switch the device into SLEEP and
ACTIVE state.
Also adding sleep configuration for different resources so that they
should be keep on during sleep state of device.Signed-off-by: Laxman Dewangan
Signed-off-by: Samuel Ortiz
17 Mar, 2012
1 commit
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This was the copy-paste issue in reg cache support code where
variable name for regmap config was not really starting from
the device name, it was starting from some other device name.
Fixing this so that variable name contains actual device name.Signed-off-by: Laxman Dewangan
Signed-off-by: Samuel Ortiz
07 Mar, 2012
2 commits
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Using regmap apis for accessing the device registers and
using RBTREE caching mechanims for caching registers.Enabling caching of the registers which is used for voltage
controls. By doing this, the modify_bits operation is faster as
it does not involve the i2c register read from device, just read
from cache. This results faster set voltage operation.Signed-off-by: Laxman Dewangan
Reviewed-by: Mark Brown
Signed-off-by: Samuel Ortiz -
irq_base of the tps65910 irq platform data should be
initialized with the board provided irq_base data.Signed-off-by: Laxman Dewangan
Signed-off-by: Samuel Ortiz
09 Jan, 2012
1 commit
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TPS65910 can be used without interrupts.
Hence let probe succeed in case interrupt can't be
configured and let Kernel only to complain about itSigned-off-by: Afzal Mohammed
Signed-off-by: Samuel Ortiz
21 Dec, 2011
1 commit
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The function is not actually cleaing the bitmask.
Signed-off-by: Marcus Folkesson
Signed-off-by: Samuel Ortiz
01 Aug, 2011
1 commit
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In drivers/mfd/tps65910.c:tps65910_i2c_probe() there's potential for a
tiny optimization.We assign to init_data->irq and init_data->irq_base long before we
need them, and there are two potential exits from the function before
they are needed.Moving the assignments below these two potential exits means we
completely avoid doing them in these two (failure) cases.Signed-off-by: Jesper Juhl
Acked-by: Graeme Gregory
Signed-off-by: Samuel Ortiz
