Register thermal zones as hwmon sensors to let userspace read
temperatures using standard hwmon interface.
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20230613091317.1691247-1-wenst@chromium.org
Add MT8195 AP Domain support to LVTS Driver.
Take the opportunity to update the comments to show calibration data
information related to the new domain.
[dlezcano]: Massaged a bit the changelog
Signed-off-by: Balsam CHIHI <bchihi@baylibre.com>
Tested-by: Chen-Yu Tsai <wenst@chromium.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20230307154524.118541-3-bchihi@baylibre.com
The binary representation for sensor 1 interrupt status was incorrectly
assembled, when compared to the full table given in the same comment
section. The conversion into hex was also incorrect, leading to
incorrect interrupt status bitmask for sensor 1. This would cause the
driver to incorrectly identify changes for sensor 1, when in fact it
was sensor 0, or a sensor access time out.
Fix the binary and hex representations in the comments, and the actual
bitmask macro.
Fixes: f5f633b182 ("thermal/drivers/mediatek: Add the Low Voltage Thermal Sensor driver")
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20230328031017.1360976-1-wenst@chromium.org
Replace the accesses to 'tz->type' by its accessor version in order to
self-encapsulate the thermal_zone_device structure.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Ido Schimmel <idosch@nvidia.com> #mlxsw
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> #MediaTek LVTS
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Some drivers are directly using the thermal zone's 'device' structure
field.
Use the driver device pointer instead of the thermal zone device when
it is available.
Remove the traces when they are duplicate with the traces in the core
code.
Cc: Jean Delvare <jdelvare@suse.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Balsam CHIHI <bchihi@baylibre.com> #Mediatek LVTS
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> #MediaTek LVTS
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The thermal zone device structure is exposed to the different drivers
and obviously they access the internals while that should be
restricted to the core thermal code.
In order to self-encapsulate the thermal core code, we need to prevent
the drivers accessing directly the thermal zone structure and provide
accessor functions to deal with.
Use the devdata accessor introduced in the previous patch.
No functional changes intended.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> #R-Car
Acked-by: Mark Brown <broonie@kernel.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> #MediaTek auxadc and lvts
Reviewed-by: Balsam CHIHI <bchihi@baylibre.com> #Mediatek lvts
Reviewed-by: Adam Ward <DLG-Adam.Ward.opensource@dm.renesas.com> #da9062
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com> #spread
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com> #sun8i_thermal
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com> #Broadcom
Reviewed-by: Dhruva Gole <d-gole@ti.com> # K3 bandgap
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Heiko Stuebner <heiko@sntech.de> #rockchip
Reviewed-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com> #uniphier
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The Low Voltage Thermal Sensor (LVTS) is a multiple sensors, multi
controllers contained in a thermal domain.
A thermal domains can be the MCU or the AP.
Each thermal domains contain up to seven controllers, each thermal
controller handle up to four thermal sensors.
The LVTS has two Finite State Machines (FSM), one to handle the
functionin temperatures range like hot or cold temperature and another
one to handle monitoring trip point. The FSM notifies via interrupts
when a trip point is crossed.
The interrupt is managed at the thermal controller level, so when an
interrupt occurs, the driver has to find out which sensor triggered
such an interrupt.
The sampling of the thermal can be filtered or immediate. For the
former, the LVTS measures several points and applies a low pass
filter.
Signed-off-by: Balsam CHIHI <bchihi@baylibre.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
On MT8195 Tomato Chromebook:
Tested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230209105628.50294-5-bchihi@baylibre.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
