If enable auto-freq, raplace min_freq with status-rate, so the target
rate ranges from status rate to max_freq.
If disabe auto-freq, raplace min_freq and max_freq with statusrate,
so the target rate will be status rate.
Change-Id: Id40c3b859d14fd154735af18e642804fc2895b87
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
Because ddr freq scanning may get clk mutex than get drm general
mutex to get lcdc_type. But when drm status change, drm may get drm
general mutex first and than get clk mutex. This may cause deadlock.
So when get lcdc type we change to use drm_modeset mutex to avoid
deadlock.
Change-Id: I64d4c236b682d7bd5bdc95264ff2711ebcec2cad
Signed-off-by: Tang Yun ping <typ@rock-chips.com>
drivers/devfreq/rockchip_dmc.c:665:2-3: Unneeded semicolon
drivers/devfreq/rockchip_dmc.c:676:2-3: Unneeded semicolon
drivers/devfreq/rockchip_dmc.c:686:2-3: Unneeded semicolon
drivers/devfreq/rockchip_dmc.c:697:2-3: Unneeded semicolon
drivers/devfreq/rockchip_dmc.c:707:2-3: Unneeded semicolon
drivers/devfreq/rockchip_dmc.c:766:2-3: Unneeded semicolon
drivers/devfreq/rockchip_dmc.c:776:2-3: Unneeded semicolon
drivers/devfreq/rockchip_dmc.c:1397:2-3: Unneeded semicolon
drivers/devfreq/rockchip_dmc.c:1022:3-4: Unneeded semicolon
drivers/devfreq/rockchip_dmc.c:662:5-11: inconsistent IS_ERR and PTR_ERR on line 664.
drivers/devfreq/rockchip_dmc.c:683:5-11: inconsistent IS_ERR and PTR_ERR on line 685.
drivers/devfreq/rockchip_dmc.c:704:5-11: inconsistent IS_ERR and PTR_ERR on line 706.
drivers/devfreq/rockchip_dmc.c:773:5-11: inconsistent IS_ERR and PTR_ERR on line 775.
Change-Id: I95f2f66649ead3d0c0f59ae713d9272863eb9f63
Signed-off-by: Huang, Tao <huangtao@rock-chips.com>
This makes ddr possible to enter auto self-refresh mode
when early suspend.
Change-Id: I0cd214bcb9c8e82aeea3f335a77be21feb356e2d
Signed-off-by: Tang Yun ping <typ@rock-chips.com>
This makes it possible to enter ddr self-refresh mode
when early suspend.
Change-Id: Ib72f391af00674a3c3ab32bbbd4e4a857d3354e8
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
This registers a reboot notifier, it will change ddr frequency to a
specified value when reboot system.
This registers a fb notifier, it will change ddr frequency to a specified
value and enable ddr self-reflash mode when early suspend.
This adds a new sysfs node system_status, so that different system status
can change ddr frequency through the node.
Change-Id: Ib5d7d5bd8ee82c29f6f260a3d2ffcb829dde2003
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
1. add unify params for ddr frequency scanning.
2. add dram side and phy side odt disable frequency configurate
independent.
Change-Id: Ied97dbee8d30a1a6e95d4c252986121092c484d8
Signed-off-by: Tang Yun ping <typ@rock-chips.com>
We weren't giving enough time for DMC to change frequencies
when the CPU was running slow.
Change-Id: I84e1a4ad7b5ccddafb0016f3d5d6eef147a58591
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
To protect against races with concurrent CPU online/offline, call
get_online_cpus() before change frequency.
Change-Id: I5b97cd7eff6a1c4828ab30bc165fb2aa8b460bb3
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
It never has the mutex_lock counterpart before goto.
Change-Id: I937e79bc65433cb1c173fe0cb221e7d69586046c
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
It may disable vop_crtc when scaling frequency, in this case,
devfreq thread will wait for vop line flag indefinitely, the
system will crash.
Change-Id: I7043b285c329ff23e2fc9c5b5f3a165c37ef6378
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
This adds the necessary data for handling dmcfreq on the rk3288.
Change-Id: I042222f899d03ec1832ac47b48db8c6c46c3b0d3
Signed-off-by: Tang Yun ping <typ@rock-chips.com>
This adds the necessary data for handling dfi on the rk3288.
Access the dfi via registers provided by GRF (general register
files) module.
Change-Id: Ic7241af3c20a269ab362055dea04d260e01c50de
Signed-off-by: Tang Yun ping <typ@rock-chips.com>
As dmc may also assess register PMU_BUS_IDLE_REQ, we should prevent
pd driver and dmc driver assessing this register at the same time.
Change-Id: I546033536c87dcf497774cbc6c8f36a3e651ff07
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
In order to scaling frequency more timely, reduce the polling_ms.
Change-Id: Icbee5552396fa0552fb514d92ea77687228c3e28
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
This adds the necessary data for handling dmcfreq on the rk3368.
Change-Id: Ie202cbaa3b27e52b22a5efc57c6e108fbd03a20a
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
It will be easy to compatible with more rockchip platforms,
if move the initialized code of dram into a separated function.
Change-Id: Iad8738b2c0995712723a8e3e84f12ae6b9b2aa91
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
In future it will be modified to support more rockchip platforms.
Change-Id: I5cd7ce555eefe08b12fbfcda8ef445c4b169e8c6
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
In order to get correct results from sysfs, e.g.:
cat /sys/class/devfreq/dmc/min_freq
cat /sys/class/devfreq/dmc/max_freq
Change-Id: Id5921fdbacd0977c0b5378ccf0de068f0195b557
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
The function doesn't get something from dts, it is more appropriate to
rename of_get_opp_table to rk3399_dmcfreq_init_freq_table.
Change-Id: I8c4994d45ff4d0654d034483e091bbb225a1ea61
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
This adds the necessary data for handling dfi on the rk3368.
Access the dfi via registers provided by GRF (general register
files) module.
Change-Id: I96c2b4dcd34d90731b749ebdbe6922f01559d8e6
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
This patch uses the resource-managed to add the devfreq device.
This function will make it easy to handle the devfreq device.
- struct devfreq *devm_devfreq_add_device(struct device *dev,
struct devfreq_dev_profile *profile,
const char *governor_name,
void *data);
Conflicts:
drivers/devfreq/rk3399_dmc.c
Change-Id: I2ba2779a1b944931dc240f0593824f0316d11985
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
(cherry picked from commit 927b75a628)
If the driver is built as a module, autoload won't work because the module
alias information is not filled. So user-space can't match the registered
device with the corresponding module.
Export the module alias information using the MODULE_DEVICE_TABLE() macro.
Before this patch:
$ modinfo drivers/devfreq/rk3399_dmc.ko | grep alias
$
After this patch:
$ modinfo drivers/devfreq/rk3399_dmc.ko | grep alias
alias: of:N*T*Crockchip,rk3399-dmcC*
alias: of:N*T*Crockchip,rk3399-dmc
Change-Id: I4bffd86067bb487619ce8365532123938a0ca964
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
(cherry picked from commit 2f3f1a261c)
Current code uses devm_regulator_get() in .probe so a regulator_put() will
be automatically called when unload the module. Remove the explictly
regulator_put() call and then we can also remove rk3399_dmcfreq_remove().
Change-Id: I56a62a76f06403aff9ad0478e7701862084a90b3
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
(cherry picked from commit da4a64481b)
If the regulator is shared between several devices then the lowest
request voltage that meets the system constraints will be used.
Change-Id: I9645f3f81004c7203769a92367513d9d177504b2
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
If there is only one opp whose frequency is equal to the initial value
in opp table list, the DDR voltage domain will keep the initial voltage,
it may be too large.
Change-Id: I9e75d54bdc7d909baa72667821ff30beb4d62e27
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
We have already wait dcf done in ATF, so don't need wait dcf irq
in kernel, besides, clear dcf irq in kernel will import competiton
between kernel and ATF, only handle dcf irq in ATF is a better way.
BUG=chrome-os-partner:54651
TEST=Boot from kevin
Change-Id: Ibfc460bebb86eb72a218fbf39176d30320da2c57
Signed-off-by: Lin Huang <hl@rock-chips.com>
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
Calculate current load with busytime / totaltime from status,
also show the current frequency.
Change-Id: Ic310035db9c5478aa3d0b1e526b47c451fe09d23
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
Get opp table from device node for rk3399 dmc table.
Change-Id: I689078d60ebdadf0954b60de70d05bc56a8d6597
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
Base on dfi result, we do ddr frequency scaling, register
dmc driver to devfreq framework, and use simple-ondemand
policy.
Change-Id: I4cc6bd9218f6fe0ae09d79c23516c6dbdaa59af2
Signed-off-by: Lin Huang <hl@rock-chips.com>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
on rk3399 platform, there is dfi conroller can monitor
ddr load, base on this result, we can do ddr freqency
scaling.
Change-Id: I85efe7f626e636606508fdd171b14275591c0612
Signed-off-by: Lin Huang <hl@rock-chips.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
This patch sends the DEVFREQ_POSTCHANGE notification when
devfreq->profile->targer() is failed. The PRECHANGE/POSTCHANGE
should be paired.
Fixes: 0fe3a66410 (PM / devfreq: Add new DEVFREQ_TRANSITION_NOTIFIER notifier)
Change-Id: I571fcc0ba95da6f7533d20818dfbd5f628c2f3ee
Reported-by: Lin Huang <hl@rock-chips.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
(cherry picked from commit 0d37189e80)
This patch adds the new DEVFREQ_TRANSITION_NOTIFIER notifier to send
the notification when the frequency of device is changed.
This notifier has two state as following:
- DEVFREQ_PRECHANGE : Notify it before chaning the frequency of device
- DEVFREQ_POSTCHANGE : Notify it after changed the frequency of device
And this patch adds the resourced-managed function to release the resource
automatically when error happen.
Change-Id: Id92ce7b9b2fba0e8776b1bc6980996b16a2902f3
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
[m.reichl and linux.amoon: Tested it on exynos4412-odroidu3 board]
Tested-by: Markus Reichl <m.reichl@fivetechno.de>
Tested-by: Anand Moon <linux.amoon@gmail.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Acked-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
(cherry picked from commit 0fe3a66410)
This patch adds the new devfreq_get_devfreq_by_phandle() OF helper function
which can find the instance of devfreq device by using phandle ("devfreq").
Change-Id: I0d0ed78930811e896215c2b7a9125cad69310407
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
[m.reichl and linux.amoon: Tested it on exynos4412-odroidu3 board]
Tested-by: Markus Reichl <m.reichl@fivetechno.de>
Tested-by: Anand Moon <linux.amoon@gmail.com>
Acked-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
(cherry picked from commit 8f510aeb22)
When device_register() fails, kfree(devfreq) is called already in
devfreq_dev_release(), hence there is no need to call kfree(devfreq)
in err_dev again.
Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Writing the currently set governor into sysfs currently
seems to fail.
Fix this by setting the return code to zero before
leaving governor_store().
Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
1.add the function of configure ddr timing such us sr_idle, pd_idle, odt
disable frequency, dll bypass frequency, odt strength, driver strength in dts.
2.make sure commit 8be554a502 ("rk3368 dts: add ddr timing node in
rk3368.dtsi" add ddr timing node in dts that user can configure ddr timing in
dts file.) was merged.
3.bl30 must update to rk3368bl30_v2.11.bin.
Change-Id: Ie8ae559c8128eb01788271a4333c465e21954ab1
Signed-off-by: Tang Yun ping <typ@rock-chips.com>
time_in_state in struct devfreq is defined as unsigned long, so
devm_kzalloc should use sizeof(unsigned long) as argument instead
of sizeof(unsigned int), otherwise it will cause unexpected result
in 64bit system.
Signed-off-by: Xiaolong Ye <yexl@marvell.com>
Signed-off-by: Kevin Liu <kliu5@marvell.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
The thermal infrastructure should use the devfreq cooling device, which
uses the OPP library to disable OPPs as necessary.
Fix a couple of typos in the same comment while we are at it.
Signed-off-by: Javi Merino <javi.merino@arm.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
The return value of get_dev_status() can be reused. Cache it so that
other parts of the kernel can reuse it instead of having to call the
same function again.
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Javi Merino <javi.merino@arm.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
