Revision d2e3fce9ddafe689c6f7cb355f23560637e30b9d authored by Ville Syrjälä on 10 November 2020, 21:04:47 UTC, committed by Rodrigo Vivi on 19 November 2020, 06:52:25 UTC
EDID can declare the maximum supported bpc up to 16, and apparently there are displays that do so. Currently we assume 12 bpc is tha max. Fix the assumption and toss in a MISSING_CASE() for any other value we don't expect to see. This fixes modesets with a display with EDID max bpc > 12. Previously any modeset would just silently fail on platforms that didn't otherwise limit this via the max_bpc property. In particular we don't add the max_bpc property to HDMI ports on gmch platforms, and thus we would see the raw max_bpc coming from the EDID. I suppose we could already adjust this to also allow 16bpc, but seeing as no current platform supports that there is little point. Cc: stable@vger.kernel.org Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/2632 Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20201110210447.27454-1-ville.syrjala@linux.intel.com Reviewed-by: José Roberto de Souza <jose.souza@intel.com> (cherry picked from commit 2ca5a7b85b0c2b97ef08afbd7799b022e29f192e) Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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gsc-hwmon.rst
.. SPDX-License-Identifier: GPL-2.0
Kernel driver gsc-hwmon
=======================
Supported chips: Gateworks GSC
Datasheet: http://trac.gateworks.com/wiki/gsc
Author: Tim Harvey <tharvey@gateworks.com>
Description:
------------
This driver supports hardware monitoring for the temperature sensor,
various ADC's connected to the GSC, and optional FAN controller available
on some boards.
Voltage Monitoring
------------------
The voltage inputs are scaled either internally or by the driver depending
on the GSC version and firmware. The values returned by the driver do not need
further scaling. The voltage input labels provide the voltage rail name:
inX_input Measured voltage (mV).
inX_label Name of voltage rail.
Temperature Monitoring
----------------------
Temperatures are measured with 12-bit or 10-bit resolution and are scaled
either internally or by the driver depending on the GSC version and firmware.
The values returned by the driver reflect millidegree Celcius:
tempX_input Measured temperature.
tempX_label Name of temperature input.
PWM Output Control
------------------
The GSC features 1 PWM output that operates in automatic mode where the
PWM value will be scalled depending on 6 temperature boundaries.
The tempeature boundaries are read-write and in millidegree Celcius and the
read-only PWM values range from 0 (off) to 255 (full speed).
Fan speed will be set to minimum (off) when the temperature sensor reads
less than pwm1_auto_point1_temp and maximum when the temperature sensor
equals or exceeds pwm1_auto_point6_temp.
pwm1_auto_point[1-6]_pwm PWM value.
pwm1_auto_point[1-6]_temp Temperature boundary.
Computing file changes ...
