Commit graph

287,481 commits

Author SHA1 Message Date
Robert Jarzmik
e971affaf9 mtd: nand: pxa3xx-nand: prevent DFI bus lockup on removal
After the conversion of pxa architecture to common clock framework, the
NAND clock can be disabled on driver exit.

In this case, it happens that if the driver used the NAND and set the
DFI arbitration bit, the next access to a static memory controller area,
such as an ethernet card, will stall the system bus, and the core will
be stalled forever.

This is especially true on pxa31x SoCs, where the NDCR was augmented
with a new bit to prevent this lockups by giving full ownership of the
DFI arbiter to the SMC, in change SCr#6.

Fix this by clearing the DFI arbritration bit in driver exit. This
effectively prevents a lockup on zylonite when removing pxa3xx-nand
module, and using ethernet afterwards.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-09-28 17:32:19 -07:00
Chaehyun Lim
c22dbd4bb8 staging: wilc1000: remove CoreConfiguratorDeInit
This patch removes CoreConfiguratorDeInit function, which is not doing
anything else except printing a PRINT_D message and returning a
s32Error. It is also removed the codes that is calling this function.

Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29 02:31:19 +02:00
Javier Martinez Canillas
6a27224f96 staging: wicl1000: fix dereference after free in wilc_wlan_cleanup()
The wilc_wlan_cleanup() function iterates over the list of transmission
buffers freeing all of them and then iterates over the receive buffers
list to free all of them as well.

But on the receive loop a pointer to struct txq_entry_t is dereferenced
instead of the pointer to a struct rxq_entry_t. This not only causes a
dereference to a pointer already freed but also leaks the memory in the
struct rxq_entry_t buffer.

Also, the buffer is allocated when MEMORY_STATIC is not defined no when
MEMORY_DYNAMIC is defined. So use #ifndef MEMORY_STATIC instead as it's
done in the rest of the driver to avoid leaking the buffer memory.

Fixes: c5c77ba18e ("staging: wilc1000: Add SDIO/SPI 802.11 driver")
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29 02:31:19 +02:00
Chaehyun Lim
dddaba1a3b staging: wilc1000: host_int_init: remove unnecessary parentheses
This patch removes unnecessary parentheses found by checkpatch.pl

Unnecessary parentheses around pstrWFIDrv->hSemTestKeyBlock
Unnecessary parentheses around pstrWFIDrv->hSemTestDisconnectBlock
Unnecessary parentheses around pstrWFIDrv->hSemGetRSSI
Unnecessary parentheses around pstrWFIDrv->hSemGetLINKSPEED
Unnecessary parentheses around pstrWFIDrv->hSemGetCHNL
Unnecessary parentheses around pstrWFIDrv->hSemInactiveTime
Unnecessary parentheses around pstrWFIDrv->gtOsCfgValuesSem
Unnecessary parentheses around pstrWFIDrv->gtOsCfgValuesSem

Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29 02:29:53 +02:00
Chaehyun Lim
1d53eec391 staging: wilc1000: host_int_init: remove blank line before a close brace.
This patch removes blank line before a close brace.
CHECK: Blank lines aren't necessary before a close brace '}'

Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29 02:29:53 +02:00
Chaehyun Lim
5b09bd32a7 staging: wilc1000: host_int_init: replace s32Error with result
This patch replaces s32Error with result in host_int_init function to
avoid camelcase.

Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29 02:29:52 +02:00
Chaehyun Lim
3f4e0ce2b6 staging: wilc1000: host_int_init: remove commented code
This patch removes commented code in host_int_init function.

Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29 02:29:52 +02:00
Chaehyun Lim
9dfcff4a42 staging: wilc1000: host_int_init: remove multiple blank lines
This patch removes multiple blank lines in host_int_init function.

Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29 02:29:52 +02:00
Chaehyun Lim
1604296d20 staging: wilc1000: host_int_init: fix kzalloc error check
This patch fixes error check when kzalloc is failed.
NULL comparison style is changed to use ! operator and
PRINT_ER is also removed.

Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29 02:29:51 +02:00
Chaehyun Lim
27a82ebf92 staging: wilc1000: host_int_init: replace kmalloc with kzalloc
This patch replaces kmalloc with kzalloc in host_int_init.

Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29 02:29:51 +02:00
Chaehyun Lim
67ec31b8c2 staging: wilc1000: host_int_init: remove meaningless comment
This patch removes meaningless comment in host_int_init function.

Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29 02:29:51 +02:00
Chaehyun Lim
109c483127 staging: wilc1000: remove CoreConfiguratorInit
This patch removes CoreConfiguratorInit function, which is not doing
anything else except printing a PRINT_D message and returing a s32Error.
It is also removed the code that is calling this function.

Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29 02:29:51 +02:00
Chaehyun Lim
37316e8167 staging: wilc1000: make add_virtual_intf static
This patch makes add_virtual_intf static. This function is used only at
wilc_wfi_cfgoperation.c file.

Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29 02:29:50 +02:00
Chaehyun Lim
c156032daf staging: wilc1000: make mgmt_tx static
This patch makes mgmt_tx static. This function is used only at
wilc_wfi_cfgoperation.c file.

Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29 02:29:50 +02:00
Chaehyun Lim
85c587a548 staging: wilc1000: make mgmt_tx_cancel_wait static
This patch makes mgmt_tx_cancel_wait static. This function is used only
at wilc_wfi_cfgoperation.c file.

Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29 02:29:50 +02:00
Chaehyun Lim
956d721197 staging: wilc1000: make del_virtual_intf static
This patch makes del_virtual_intf static. This function is used only at
wilc_wfi_cfgoperation.c file.

Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29 02:29:50 +02:00
Chaehyun Lim
a8047e26c7 staging: wilc1000: rename WILC_WFI_set_cqm_rssi_config
This patch replaces WILC_WFI_set_cqm_rssi_config with
set_cqm_rssi_config to avoid CamelCase.

Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29 02:29:50 +02:00
Chaehyun Lim
cdc9cba5ff staging: wilc1000: remove useless comment
This patch removes useless comment.

Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29 02:29:50 +02:00
Chaehyun Lim
4653067955 staging: wilc1000: rename WILC_WFI_set_power_mgmt
This patch replaces WILC_WFI_set_power_mgmt with set_power_mgmt.
then makes set_power_mgmt static.

Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29 02:29:50 +02:00
Luis de Bethencourt
b33c35b11e mtd: mxc_nand: Fix module autoload for OF platform driver
This platform driver has a OF device ID table but the OF module
alias information is not created so module autoloading won't work.

Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-09-28 17:27:57 -07:00
Leo Kim
531c7ceb93 staging: wilc1000: wilc_wlan_if.h: align define, enum and structure
This patch fix alignment of defines and items in enum and structure.

Signed-off-by: Leo Kim <leo.kim@atmel.com>
Signed-off-by: Glen Lee <glen.lee@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29 02:27:02 +02:00
Leo Kim
d4cebe4d88 staging: wilc1000: wilc_wlan_if.h: remove warnings line over 80 characters
This patch removes the warnings reported by checkpatch.pl for line over 80
characters. And also align comments which is not over 80 but to align with them.

Signed-off-by: Leo Kim <leo.kim@atmel.com>
Signed-off-by: Glen Lee <glen.lee@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29 02:27:02 +02:00
Leo Kim
12dc9e4ea6 staging: wilc1000: wilc_wlan_if.h: remove warnings on the multiple blank lines
This patch removes the warnings reported by checkpatch.pl
for using multiple blank lines.

Signed-off-by: Leo Kim <leo.kim@atmel.com>
Signed-off-by: Glen Lee <glen.lee@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29 02:27:02 +02:00
Leo Kim
234837decb staging: wilc1000: Modify null check routine
This patch removes the potential faults which may happen when unexpectedly
getting access to invalid pointer. Return error when the invalid memory is
accessed.

Signed-off-by: Leo Kim <leo.kim@atmel.com>
Signed-off-by: Glen Lee <glen.lee@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29 02:27:01 +02:00
Peng Fan
2ce401d56b mtd: blktrans: fix multiplication overflow
In drivers/mtd/mtd_blkdevs.c:
406	set_capacity(gd, (new->size * tr->blksize) >> 9);
The type of new->size is unsigned long and the type of tr->blksize is int,
the result of 'new->size * tr->blksize' may exceed ULONG_MAX on 32bit
machines.

I use nand chip MT29F32G08CBADBWP which is 4GB and the parameters passed
to kernel is 'mtdparts=gpmi-nand:-(user)', the whole nand chip will be
treated as a 4GB mtd partition. new->size is 0x800000 and tr->blksize is
0x200, 'new->size * tr->blksize' however is 0. This is what we do not want
to see.

Using type cast u64 to fix the multiplication overflow issue.

Signed-off-by: Peng Fan <van.freenix@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-09-28 17:23:21 -07:00
duson
22ef28b43f Input: elan_i2c - add all valid ic type for i2c/smbus
Signed-off-by: Duson Lin <dusonlin@emc.com.tw>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-09-28 17:18:54 -07:00
Greg Kroah-Hartman
60f593977b Merge 4.3-rc3 into usb-next
We want the USB fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29 02:14:46 +02:00
Greg Kroah-Hartman
bcabc6f328 Merge 4.3-rc3 into staging-next
We want the staging fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29 01:52:40 +02:00
Andrew Morton
d3b367bc26 Input: zhenhua - ensure we have BITREVERSE
It uses bitrev8(), so it must ensure that lib/bitrev.o gets included in
vmlinux.

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-09-28 16:42:34 -07:00
Sudip Mukherjee
b83b14598f Input: omap4-keypad - fix memory leak
If omap4_keypad_parse_dt() fails we returned the error code but we
missed releasing keypad_data.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-09-28 16:41:07 -07:00
Suzuki K. Poulose
a73b4db2a2 arm-cci500: Don't enable PMU driver by default
Disable building CCI-500 PMU driver by default.

Reported-by: Russell King <linux@arm.linux.org.uk>
Cc: Punit Agrawal <punit.agrawal@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: arm@kernel.org
Signed-off-by: Suzuki K. Poulose <suzuki.poulose@arm.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2015-09-28 16:31:17 -07:00
Luis de Bethencourt
7446076e81 mtd: mpc5121_nfc: Fix module autoload for OF platform driver
This platform driver has a OF device ID table but the OF module
alias information is not created so module autoloading won't work.

Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-09-28 16:19:51 -07:00
Luis de Bethencourt
3f7f7a5f3f mtd: fsl_ifc_nand: Fix module autoload for OF platform driver
This platform driver has a OF device ID table but the OF module
alias information is not created so module autoloading won't work.

Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-09-28 16:19:50 -07:00
Luis de Bethencourt
030a70b9af mtd: fsl_elbc_nand: Fix module autoload for OF platform driver
This platform driver has a OF device ID table but the OF module
alias information is not created so module autoloading won't work.

Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-09-28 16:19:49 -07:00
Luis de Bethencourt
98d1a5eea3 mtd: orion_nand: Fix module autoload for OF platform driver
This platform driver has a OF device ID table but the OF module
alias information is not created so module autoloading won't work.

Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-09-28 16:19:34 -07:00
Sudip Mukherjee
2260c419b5 Input: db9 - use parallel port device model
Modify db9 driver to use the new Parallel Port device model.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Tested-By: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-09-28 16:12:17 -07:00
Sudip Mukherjee
d79bdc7f00 Input: omap4-keypad - fix memory leak
If omap4_keypad_parse_dt() fails we returned the error code but we
missed releasing keypad_data.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-09-28 16:05:45 -07:00
Felipe Balbi
70f3a9caa1 usb: dwc3: gadget: remove unnecessary _irqsave()
We *know* our threads executes with our IRQs
disabled. We really don't need to use the _irqsave()
variant of spin_lock().

Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-09-28 15:19:31 -05:00
Felipe Balbi
e6e709b7ab usb: dwc3: gadget: use Update Transfer from Xfer In Progress
Instead of limiting __dwc3_gadget_kick_transfer() to
Xfer Complete, we can try to issue Update Transfer
command from Xfer In Progress too.

Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-09-28 15:19:31 -05:00
Felipe Balbi
6bb4fe12ea usb: dwc3: gadget: use update transfer command
If we get a Xfer Not Ready event with reason
"Transfer Active" it means endpoint is still
transferring data and we can use that to issue
update transfer for this particular endpoint
in case we have pending requests in our queue.

Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-09-28 15:19:31 -05:00
Felipe Balbi
8a1a9c9e45 usb: dwc3: gadget: start transfer on XFER_COMPLETE
if by the time we get to XFER_COMPLETE we have
pending requests to be processed, instead of waiting
for a following XFER_NOT_READY, let's start the request
right away and, maybe, save the time of a few NAKs
due to lack of started transfers.

Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-09-28 14:17:26 -05:00
Andreas Dannenberg
9b1cf1e44d power: bq24257: Streamline input current limit setup
The maximum amount of input current the charger should draw is dependent
on the power supply and should only be (re-)configured when the power
supply gets connected and disconnected. However the driver was also
lowering the bq24257's input current limit setting to 500mA when the
battery was removed and restored the previous setting according to the
power supply capabilities when the battery was reconnected although
these events are not impacting the amount of power that can be drawn
from the supply. Furthermore, a re-configuration of the input current
limit to 500mA when the battery gets disconnected is actually dangerous
if the limit was set higher previously and the system draws more than
500mA in which case the system voltage would be reduced in order to
maintain 500mA which could result in the system getting too low of a
supply to maintain operation. Last but not least the mechanism itself
used for battery re-connection detection did not work in corner cases
such as when the device's input current loop becomes active and the
bq24257 device clears its battery fault error resulting in incorrectly
reporting that the battery got reconnected.

This patches removes the impact the battery removal/insertion has on the
input current limit configured for the bq24257 and simplifies the
associated handler routine.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-09-28 18:47:50 +02:00
Andreas Dannenberg
5ff8c89d11 power: bq24257: Remove IRQ config through stat-gpios
At the time the driver was written GpioInt resources in ACPI were not
passed to the driver in client->irq, as opposed to DT enumeration. To
accommodate this use case, a "stat-gpios" property was introduced to
allow configuring the IRQ.

However this issue with ACPI was fixed in commit "845c877 i2c / ACPI:
Assign IRQ for devices that have GpioInt automatically" and makes this
workaround no longer necessary, hence we can remove the support for the
"stat-gpios" property and the associated code from the bq24257 driver.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-09-28 18:36:35 +02:00
Felipe Balbi
9903b6bedd usb: gadget: pch-udc: fix lock
gadget methods should be called without
spinlocks held.

Reported-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-09-28 11:24:29 -05:00
Andrzej Hajda
2edd69a81d power: bq27xxx_battery: fix signedness bug in bq27xxx_battery_read_health()
We need flags to be signed for the error handling to work.

The problem has been detected using proposed semantic patch
scripts/coccinelle/tests/unsigned_lesser_than_zero.cocci [1].

[1]: http://permalink.gmane.org/gmane.linux.kernel/2038576

Fixes: 74aab849f3 ('power: bq27xxx_battery: Cleanup health checking')
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-By: Pali Rohár <pali.rohar@gmail.com>
Acked-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-09-28 18:07:48 +02:00
Toshi Kani
d0c9c93019 EDAC: Don't allow empty DIMM labels
Updating dimm_label to an empty string does not make much sense. Change
the sysfs dimm_label store operation to fail a request when an input
string is empty.

Suggested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Cc: elliott@hpe.com
Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/1443124767.25474.172.camel@hpe.com
Signed-off-by: Borislav Petkov <bp@suse.de>
2015-09-28 16:39:05 +02:00
Michel Thierry
dfc53c5e73 drm/i915: Consider HW CSB write pointer before resetting the sw read pointer
A previous commit resets the Context Status Buffer (CSB) read pointer in
ring init
    commit c0a03a2e4c ("drm/i915: Reset CSB read pointer in ring init")

This is generally correct, but this pointer is not reset after
suspend/resume in some platforms (cht). In this case, the driver should
read the register value instead of resetting the sw read counter to 0.
Otherwise we process old events, leading to unwanted pre-emptions or
something worse.

But in other platforms (bdw) and also during GPU reset or power up, the
CSBWP is reset to 0x7 (an invalid number), and in this case the read
pointer should be set to 5 (the interrupt code will increment this
counter one more time, and will start reading from CSB[0]).

v2: When the CSB registers are reset, the read pointer needs to be set
to 5, otherwise the first write (CSB[0]) won't be read (Mika).
Replace magic numbers with GEN8_CSB_ENTRIES (6) and GEN8_CSB_PTR_MASK
(0x07).

Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: stable@vger.kernel.org # v4.0+
Signed-off-by: Lei Shen <lei.shen@intel.com>
Signed-off-by: Deepak S <deepak.s@intel.com>
Signed-off-by: Michel Thierry <michel.thierry@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-09-28 17:23:19 +03:00
Prasanna Karthik
a913718812 Bluetooth: hci_qca: Changed unsigned long to bool
'retransmit' being set in HCI_IBS_TX_WAKING case, using bool would be
efficient. Initialize local bool to false.

Signed-off-by: Prasanna Karthik <mkarthi3@visteon.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-28 13:06:13 +02:00
Sudeep Holla
8def31034d cpufreq: arm_big_little: add SCPI interface driver
On some ARM based systems, a separate Cortex-M based System Control
Processor(SCP) provides the overall power, clock, reset and system
control including CPU DVFS. SCPI Message Protocol is used to
communicate with the SCPI.

This patch adds a interface driver for adding OPPs and registering
the arm_big_little cpufreq driver for such systems.

Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: linux-pm@vger.kernel.org
2015-09-28 11:53:38 +01:00
Sudeep Holla
9490f01e24 clk: scpi: add support for cpufreq virtual device
The clocks for the CPUs are provided by SCP and are managed by this
clock driver. So the cpufreq device needs to be added only after the
clock get registered and removed when this driver is unloaded.

This patch manages the cpufreq virtual device based on the clock
availability.

Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Cc: Mike Turquette <mturquette@baylibre.com>
Cc: Liviu Dudau <Liviu.Dudau@arm.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Jon Medhurst (Tixy) <tixy@linaro.org>
Cc: linux-clk@vger.kernel.org
2015-09-28 11:53:37 +01:00