This patch adds softreset controller for STiH416 SOC, soft reset
controller is based on system configuration registers which are mapped
via regmap. This reset controller does not have any feedback or
acknowledgement. With this patch a new device "st,stih416-softreset" is
registered with system configuration registers based reset controller
that controls the softreset state of the hardware such as Ethernet, IRB.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Now that we have the main cpuidle function in idle.c, move some code from
the idle mainloop to this function for the sake of clarity.
That removes if then else indentation difficult to follow when looking at the
code. This patch does not change the current behavior.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: tglx@linutronix.de
Cc: rjw@rjwysocki.net
Cc: preeti@linux.vnet.ibm.com
Link: http://lkml.kernel.org/r/1393832934-11625-3-git-send-email-daniel.lezcano@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The cpuidle_idle_call does nothing more than calling the three individuals
function and is no longer used by any arch specific code but only in the
cpuidle framework code.
We can move this function into the idle task code to ensure better
proximity to the scheduler code.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: rjw@rjwysocki.net
Cc: preeti@linux.vnet.ibm.com
Link: http://lkml.kernel.org/r/1393832934-11625-2-git-send-email-daniel.lezcano@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
In order to allow better integration between the cpuidle framework and the
scheduler, reducing the distance between these two sub-components will
facilitate this integration by moving part of the cpuidle code in the idle
task file and, because idle.c is in the sched directory, we have access to
the scheduler's private structures.
This patch splits the cpuidle_idle_call main entry function into 3 calls
to a newly added API:
1. select the idle state
2. enter the idle state
3. reflect the idle state
The cpuidle_idle_call calls these three functions to implement the main
idle entry function.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: rjw@rjwysocki.net
Cc: preeti@linux.vnet.ibm.com
Link: http://lkml.kernel.org/r/1393832934-11625-1-git-send-email-daniel.lezcano@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Start the channel tear down only if the channel is busy, else just
bail out. In some cases its seen that by the time the tear down is
initiated the cppi completes the DMA, especially in ISOCH transfers.
Signed-off-by: George Cherian <george.cherian@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Reprogramming the DMA after tear down is initiated leads to warning.
This is mainly seen with ISOCH since we do a delayed completion for
ISOCH transfers. In ISOCH transfers dma_completion should not reprogram
if the channel tear down is initiated.
Signed-off-by: George Cherian <george.cherian@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This patch adds softreset controller for STiH415 SOC, soft reset
controller is based on system configuration registers which are mapped
via regmap. This reset controller does not have any feedback or
acknowledgement. With this patch a new device "st,stih415-softreset" is
registered with system configuration registers based reset controller
that controls the softreset state of the hardware such as Ethernet, IRB.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
This patch adds a reset controller platform driver for the STiH416
SoC. This initial version provides a compatible driver for the
"st,stih416-powerdown" device, which registers a system configuration
register based reset controller that controls the powerdown state of
hardware such as the on-chip USB host controllers.
Signed-off-by: Stephen Gallimore <stephen.gallimore@st.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
This patch adds a reset controller platform driver for the STiH415
SoC. This initial version provides a compatible driver for the
"st,stih415-powerdown" device, which registers a system configuration
register based reset controller that controls the powerdown state of
hardware such as the on-chip USB host controllers.
Signed-off-by: Stephen Gallimore <stephen.gallimore@st.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
This patch adds a reset controller implementation for STMicroelectronics
STi family SoCs; it allows a group of related reset like controls found
in multiple system configuration registers to be represented by a single
controller device. System configuration registers are accessed through
the regmap framework and the mfd/syscon driver.
The implementation optionally supports waiting for the reset action to
be acknowledged in a separate status register and supports both
active high and active low reset lines. These properties are common across
all the reset channels in a specific reset controller instance, hence
all channels in a paritcular controller are expected to behave in the
same way.
Signed-off-by: Stephen Gallimore <stephen.gallimore@st.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
There are two troubles there:
1) the bit error measure were not accumulating;
2) it was missing the bit count.
Fix them.
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
drivers/media/dvb-frontends/drx39xyj/drxj.c: In function 'ctrl_get_qam_sig_quality':
drivers/media/dvb-frontends/drx39xyj/drxj.c:9468:6: warning: variable 'ber_cnt' set but not used [-Wunused-but-set-variable]
u32 ber_cnt = 0; /* BER count */
^
By reading the comment, it is said that BER should be calculated as:
qam_pre_rs_ber = frac_times1e6( ber_cnt, rs_bit_cnt );
Also, it makes sense to take the mantissa into account, so fix the
code to do what's commented.
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Now that everything is set, let's enable DVBv5 stats, for
applications that support it.
DVBv3 apps will still work.
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Instead of just assuming that the min resolution is 1E-6,
pass both bit error and bit counts for userspace to calculate
BER. The same applies for PER, for 8VSB. It is not clear how
to get the packet count for QAM. So, for now, don't expose PER
for QAM.
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Convert the stats internally to use DVBv5. For now, it will keep
showing everything via DVBv3 API only, as the .len value were
not initialized.
That allows testing if the new stats code didn't break anything.
A latter patch will add the final bits for the DVBv5 stats to
fully work.
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
We'll need to use this function. Restore it from the
git history.
This function will be used on the next patch.
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
State is already used on other places for the state struct.
Don't use it here, to avoid troubles with latter patches.
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
As reported when compiled with W=1:
drivers/media/dvb-frontends/drx39xyj/drxj.c: In function ‘ctrl_set_channel’:
drivers/media/dvb-frontends/drx39xyj/drxj.c:10340:26: warning: variable ‘common_attr’ set but not used [-Wunused-but-set-variable]
struct drx_common_attr *common_attr = NULL;
^
drivers/media/dvb-frontends/drx39xyj/drxj.c:10336:6: warning: variable ‘intermediate_freq’ set but not used [-Wunused-but-set-variable]
s32 intermediate_freq = 0;
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This function is currently not used. However, it was meant to
be called at device release. So, add it there.
While here, remove the bad check, as reported by Dan, as
smatch warning:
drivers/media/dvb-frontends/drx39xyj/drxj.c:20041 drxj_close() warn: variable dereferenced before check 'demod' (see line 20036)
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
There are large chunks of code at drx-j that aren't used. Most
of them are due to analog TV support. Well, just enabling them
won't make analog support work, as devices with DRX and analog
support requires an extra chip (avf4910).
We don't have drivers for it, nor the current device that uses
this frontend has support for analog TV.
So, let's just get rid of this code. If latter needed, this
patch can easily be reverted from git history.
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
As reported by the kbuild test robot <fengguang.wu@intel.com>:
drivers/built-in.o: In function `em28xx_dvb_init':
em28xx-dvb.c:(.text+0x876f2c): undefined reference to `drx39xxj_attach'
That happens when CONFIG_VIDEO_EM28XX_DVB is selected, and neither
CONFIG_MEDIA_SUBDRV_AUTOSELECT or DVB_DRX39XYJ is selected.
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Prevent tracing of preempt_disable/enable() in sched_clock_cpu().
When CONFIG_DEBUG_PREEMPT is enabled, preempt_disable/enable() are
traced and this causes trace_clock() users (and probably others) to
go into an infinite recursion. Systems with a stable sched_clock()
are not affected.
This problem is similar to that fixed by upstream commit 95ef1e5292
("KVM guest: prevent tracing recursion with kvmclock").
Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/1394083528.4524.3.camel@nexus
Signed-off-by: Ingo Molnar <mingo@kernel.org>
We must use smp_call_function_single(.wait=1) for the
irq_cpu_stop_queue_work() to ensure the queueing is actually done under
stop_cpus_lock. Without this we could have dropped the lock by the time
we do the queueing and get the race we tried to fix.
Fixes: 7053ea1a34 ("stop_machine: Fix race between stop_two_cpus() and stop_cpus()")
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/20140228123905.GK3104@twins.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Deny the use of SCHED_DEADLINE policy to unprivileged users.
Even if root users can set the policy for normal users, we
don't want the latter to be able to change their parameters
(safest behavior).
Signed-off-by: Juri Lelli <juri.lelli@gmail.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1393844961-18097-1-git-send-email-juri.lelli@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The requested gpio pin must has the func_pin_mux field set
to GPIO function by BIOS/FW in advanced. Else, the gpio pin
request would fail. This is to ensure that we do not expose
any gpio pins which shall be used for alternate functions,
for eg: wakeup pin, I/O interfaces for LPSS, etc.
Signed-off-by: Chew, Kean Ho <kean.ho.chew@intel.com>
Signed-off-by: Chew, Chiau Ee <chiau.ee.chew@intel.com>
Reviewed-by: Darren Hart <dvhart@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This patch adds missing #gpio-cells and also adds a
usage example for leds.
Reported-by: Alexander Holler <holler@ahsoftware.de>
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
IBSS mode requires the changing of supported rate. Do this
by reassociate the peer. The investigation shows that if move
from legacy to HT, the rate control won't work after changing
the supported rate. But once changing the supported rate to HT,
user can assign the TxRate in HT mode.
Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
drive_dev3_pins in pinctrl-tegra114.c wasn't used; delete it.
pinctrl-tegra124.c had quite a few typos. Fix those.
pinctrl-tegra124.c had a few mismatches between the *_groups[] ararys
and the function lists in tegra124_groups[]. Fix those.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The driver missed an of_xlate function to translate gpio numbers
as found in the DT to the correct chip and number.
While there I've set #gpio_cells to a fixed value of 2.
I've used gpio-pxa.c as template for those changes and tested my changes
successfully on a da850 board using entries for gpio-leds in a DT. So I didn't
reinvent the wheel but just copied and tested stuff.
Thanks to Grygorii Strashko for the hint to the existing code in gpio-pxa.
Signed-off-by: Alexander Holler <holler@ahsoftware.de>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This patch adds IRB support to STiH416 platforms.
Tested on B2000 and B2020 development board
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
This patch adds IRB support to STiH415 platforms.
Tested on B2000 and B2020 development boards.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
This patch adds support to STiH416 SOC, which has two ethernet
snps,dwmac controllers version 3.710. With this patch B2000 and B2020
boards can boot with ethernet in MII and RGMII modes.
Tested on both B2020 and B2000.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
This patch adds support to STiH415 SOC, which has two ethernet
snps,dwmac controllers version 3.610. With this patch B2000 and B2020
boards can boot with ethernet in MII and RGMII modes.
Tested on both B2020 and B2000.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
This patch adds soft reset controller support for STiH415 and adds new
softreset lines required for other device tree nodes in the header file.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
This patch adds a reset controller node to the SOC device tree and also
adds new header files with reset lines required for other device tree
nodes.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
This patch adds soft reset controller support for STiH415 and adds new
softreset lines required for other device tree nodes in the header file.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
This patch adds a reset controller node to the SOC device tree and also
adds new header files with reset lines required for other device tree
nodes.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
