13 Commits

Author SHA1 Message Date
Enric Balletbo i Serra
c5b5101aeb Revert "thermal: mediatek: fix register index error"
[ Upstream commit a8f62f183021be389561570ab5f8c701a5e70298 ]

This reverts commit eb9aecd90d1a39601e91cd08b90d5fee51d321a6

The above patch is supposed to fix a register index error on mt2701. It
is not clear if the problem solved is a hang or just an invalid value
returned, my guess is the second. The patch introduces, though, a new
hang on MT8173 device making them unusable. So, seems reasonable, revert
the patch because introduces a worst issue.

The reason I send a revert instead of trying to fix the issue for MT8173
is because the information needed to fix the issue is in the datasheet
and is not public. So I am not really able to fix it.

Fixes the following bug when CONFIG_MTK_THERMAL is set on MT8173
devices.

[    2.222488] Unable to handle kernel paging request at virtual address ffff8000125f5001
[    2.230421] Mem abort info:
[    2.233207]   ESR = 0x96000021
[    2.236261]   EC = 0x25: DABT (current EL), IL = 32 bits
[    2.241571]   SET = 0, FnV = 0
[    2.244623]   EA = 0, S1PTW = 0
[    2.247762] Data abort info:
[    2.250640]   ISV = 0, ISS = 0x00000021
[    2.254473]   CM = 0, WnR = 0
[    2.257544] swapper pgtable: 4k pages, 48-bit VAs, pgdp=0000000041850000
[    2.264251] [ffff8000125f5001] pgd=000000013ffff003, pud=000000013fffe003, pmd=000000013fff9003, pte=006800001100b707
[    2.274867] Internal error: Oops: 96000021 [#1] PREEMPT SMP
[    2.280432] Modules linked in:
[    2.283483] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.7.0-rc6+ #162
[    2.289914] Hardware name: Google Elm (DT)
[    2.294003] pstate: 20000005 (nzCv daif -PAN -UAO)
[    2.298792] pc : mtk_read_temp+0xb8/0x1c8
[    2.302793] lr : mtk_read_temp+0x7c/0x1c8
[    2.306794] sp : ffff80001003b930
[    2.310100] x29: ffff80001003b930 x28: 0000000000000000
[    2.315404] x27: 0000000000000002 x26: ffff0000f9550b10
[    2.320709] x25: ffff0000f9550a80 x24: 0000000000000090
[    2.326014] x23: ffff80001003ba24 x22: 00000000610344c0
[    2.331318] x21: 0000000000002710 x20: 00000000000001f4
[    2.336622] x19: 0000000000030d40 x18: ffff800011742ec0
[    2.341926] x17: 0000000000000001 x16: 0000000000000001
[    2.347230] x15: ffffffffffffffff x14: ffffff0000000000
[    2.352535] x13: ffffffffffffffff x12: 0000000000000028
[    2.357839] x11: 0000000000000003 x10: ffff800011295ec8
[    2.363143] x9 : 000000000000291b x8 : 0000000000000002
[    2.368447] x7 : 00000000000000a8 x6 : 0000000000000004
[    2.373751] x5 : 0000000000000000 x4 : ffff800011295cb0
[    2.379055] x3 : 0000000000000002 x2 : ffff8000125f5001
[    2.384359] x1 : 0000000000000001 x0 : ffff0000f9550a80
[    2.389665] Call trace:
[    2.392105]  mtk_read_temp+0xb8/0x1c8
[    2.395760]  of_thermal_get_temp+0x2c/0x40
[    2.399849]  thermal_zone_get_temp+0x78/0x160
[    2.404198]  thermal_zone_device_update.part.0+0x3c/0x1f8
[    2.409589]  thermal_zone_device_update+0x34/0x48
[    2.414286]  of_thermal_set_mode+0x58/0x88
[    2.418375]  thermal_zone_of_sensor_register+0x1a8/0x1d8
[    2.423679]  devm_thermal_zone_of_sensor_register+0x64/0xb0
[    2.429242]  mtk_thermal_probe+0x690/0x7d0
[    2.433333]  platform_drv_probe+0x5c/0xb0
[    2.437335]  really_probe+0xe4/0x448
[    2.440901]  driver_probe_device+0xe8/0x140
[    2.445077]  device_driver_attach+0x7c/0x88
[    2.449252]  __driver_attach+0xac/0x178
[    2.453082]  bus_for_each_dev+0x78/0xc8
[    2.456909]  driver_attach+0x2c/0x38
[    2.460476]  bus_add_driver+0x14c/0x230
[    2.464304]  driver_register+0x6c/0x128
[    2.468131]  __platform_driver_register+0x50/0x60
[    2.472831]  mtk_thermal_driver_init+0x24/0x30
[    2.477268]  do_one_initcall+0x50/0x298
[    2.481098]  kernel_init_freeable+0x1ec/0x264
[    2.485450]  kernel_init+0x1c/0x110
[    2.488931]  ret_from_fork+0x10/0x1c
[    2.492502] Code: f9401081 f9400402 b8a67821 8b010042 (b9400042)
[    2.498599] ---[ end trace e43e3105ed27dc99 ]---
[    2.503367] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
[    2.511020] SMP: stopping secondary CPUs
[    2.514941] Kernel Offset: disabled
[    2.518421] CPU features: 0x090002,25006005
[    2.522595] Memory Limit: none
[    2.525644] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b ]--

Cc: Michael Kao <michael.kao@mediatek.com>
Fixes: eb9aecd90d1a ("thermal: mediatek: fix register index error")
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20200707103412.1010823-1-enric.balletbo@collabora.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-07-22 09:22:24 +02:00
Michael Kao
032c10fb50 thermal: mediatek: fix register index error
[ Upstream commit eb9aecd90d1a39601e91cd08b90d5fee51d321a6 ]

The index of msr and adcpnp should match the sensor
which belongs to the selected bank in the for loop.

Fixes: b7cf0053738c ("thermal: Add Mediatek thermal driver for mt2701.")
Signed-off-by: Michael Kao <michael.kao@mediatek.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-01-27 14:46:17 +01:00
Louis Yu
6760f3f74e thermal: mediatek: minor mtk_thermal.c cleanups
Move independent thermal module reset in the beginning.

Signed-off-by: Louis Yu <louis.yu@mediatek.com>
Reviewed-by: Dawei Chien <dawei.chien@mediatek.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2017-08-31 21:13:53 +08:00
Louis Yu
0a06899334 thermal: mediatek: extend calibration data for mt2712 chip
This patch adds support for mt2712 chip thermal calibration data
and calculation, and is compatible with the existing chips.

Signed-off-by: Louis Yu <louis.yu@mediatek.com>
Reviewed-by: Dawei Chien <dawei.chien@mediatek.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2017-08-31 21:13:47 +08:00
Louis Yu
6cf7f002e7 thermal: mediatek: add Mediatek thermal driver for mt2712
This patch adds support for mt2712 chip to mtk_thermal,
and integrate mt2712 into the same mediatek thermal driver.
MT2712 has only 1 bank and 4 sensors.

Signed-off-by: Louis Yu <louis.yu@mediatek.com>
Reviewed-by: Dawei Chien <dawei.chien@mediatek.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2017-08-31 21:13:43 +08:00
Dawei Chien
05d7839aa2 thermal: mt8173: minor mtk_thermal.c cleanups
If thermal bank with 4 sensors, thermal driver should read TEMP_MSR3.

However, currently thermal driver would not read TEMP_MSR3 since mt8173
thermal driver only use 3 sensors on each thermal bank at the same time,
so this patch would not effect temperature.
Only if mt mt8173 thermal driver use 4 sensors on any thermal bank, would
read third sensor two times, and lose fourth sensor of vale.

cc: stable@vger.kernel.org
Fixes: b7cf0053738c ("thermal: Add Mediatek thermal driver for mt2701.")
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Dawei Chien <dawei.chien@mediatek.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
2017-04-23 09:01:42 -07:00
Vivek Gautam
992edf395b thermal: mtk_thermal: Staticise a number of data variables
Sparse throws following warnings:
drivers/thermal/mtk_thermal.c:186:11: warning: symbol 'mt8173_bank_data' was not declared. Should it be static?
drivers/thermal/mtk_thermal.c:193:11: warning: symbol 'mt8173_msr' was not declared. Should it be static?
drivers/thermal/mtk_thermal.c:197:11: warning: symbol 'mt8173_adcpnp' was not declared. Should it be static?
drivers/thermal/mtk_thermal.c:201:11: warning: symbol 'mt8173_mux_values' was not declared. Should it be static?
drivers/thermal/mtk_thermal.c:204:11: warning: symbol 'mt2701_bank_data' was not declared. Should it be static?
drivers/thermal/mtk_thermal.c:208:11: warning: symbol 'mt2701_msr' was not declared. Should it be static?
drivers/thermal/mtk_thermal.c:212:11: warning: symbol 'mt2701_adcpnp' was not declared. Should it be static?
drivers/thermal/mtk_thermal.c:216:11: warning: symbol 'mt2701_mux_values' was not declared. Should it be static?

Make these variables as static to fix these warnings.

Signed-off-by: Vivek Gautam <vivek.gautam@codeaurora.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
2017-02-18 17:44:29 -08:00
Axel Lin
1f6b0889d0 thermal: mtk_thermal: Check return value of devm_thermal_zone_of_sensor_register
devm_thermal_zone_of_sensor_register can fail, so check it's return value.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2016-09-27 14:02:16 +08:00
dawei.chien@mediatek.com
b7cf005373 thermal: Add Mediatek thermal driver for mt2701.
This patch adds support for mt2701 chip to mtk_thermal,
and integrate both mt8173 and mt2701 on the same driver.
MT8173 has four banks and five sensors, and MT2701 has
only one bank and three sensors.

Signed-off-by: Dawei Chien <dawei.chien@mediatek.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2016-09-27 14:02:16 +08:00
Eduardo Valentin
c417bdedb1 thermal: convert mtk_thermal to use devm_thermal_zone_of_sensor_register
This changes the driver to use the devm_ version
of thermal_zone_of_sensor_register and cleans
up the  local points and unregister calls.

Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
2016-05-17 07:28:26 -07:00
Randy Dunlap
9ebfb4e099 thermal: minor mtk_thermal.c cleanups
Trivial cleanups:
- delete one duplicate #include
- end email address with closing '>'

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Eduardo Valentin <edubezval@gmail.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Hanyi Wu <hanyi.wu@mediatek.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
2016-04-20 16:22:46 -07:00
Eduardo Valentin
eb4fc33eb2 thermal: small style cleanup in mtk_thermal
Remove all checkpatch.pl --strict errors, checks, and warnings.

Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
2016-02-18 07:45:37 -08:00
Sascha Hauer
a92db1c808 thermal: Add Mediatek thermal controller support
This adds support for the Mediatek thermal controller found on MT8173
and likely other SoCs.
The controller is a bit special. It does not have its own ADC, instead
it controls the on-SoC AUXADC via AHB bus accesses. For this reason
we need the physical address of the AUXADC. Also it controls a mux
using AHB bus accesses, so we need the APMIXEDSYS physical address aswell.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
2016-02-18 07:20:36 -08:00