[PATCH v5 0/4] drm/xe/hwmon: Expose new temperature attributes

[Karthik Poosa <karthik.poosa@intel.com>]

Expose tempX_emergency and tempX_crit for package and vram,
representing shutdown and critical temperature thresholds.
These values are read via pcode thermal mailbox commands.

These are read using pcode thermal mailbox commands

v2:
 - Expose memory controller, pcie and individual vram
   temperatures also.
 - Addressed some of review comments of v1 from KVP.

v3:
 - Combine patches 1,2,3 into patch 1.
 - Combine patches 4,5 to patch 2.
 - Addressed review comments from v2.
 - Update kernel version in Xe hwmon documentation.

v4:
 - Address review comments of v3.
 - Update kernel version to 7.0 in Xe hwmon documentation.

v5:
- Address review comments in v4 from Raag.
- Group new temperature attributes with existing temperature attributes as
  per channel index in Xe hwmon documentation.
- Minor aesthetic refinements.
- Minor code improvements.
- Use DIV_ROUND_UP to calculate dwords needed for temperature limits.
- Use TEMP_MASK instead of TEMP_MASK_MAILBOX.
- Add PCIE_SENSOR_MASK which uses REG_FIELD_GET as replacement of
  PCIE_SENSOR_SHIFT.
- Improve VRAM label handling to eliminate temp variable by introducing a
  dedicated array vram_label in xe_hwmon_thermal_info.
- Change the label from vram_X to vram_ch_X.
- Remove a magic numbers.

Karthik Poosa (4):
  drm/xe/hwmon: Expose temperature limits
  drm/xe/hwmon: Expose memory controller temperature
  drm/xe/hwmon: Expose GPU pcie temperature
  drm/xe/hwmon: Expose individual vram channel temperature

 .../ABI/testing/sysfs-driver-intel-xe-hwmon   | 110 +++++++
 drivers/gpu/drm/xe/regs/xe_pcode_regs.h       |   3 +
 drivers/gpu/drm/xe/xe_device_types.h          |   2 +
 drivers/gpu/drm/xe/xe_hwmon.c                 | 281 +++++++++++++++++-
 drivers/gpu/drm/xe/xe_pci.c                   |   3 +
 drivers/gpu/drm/xe/xe_pci_types.h             |   1 +
 drivers/gpu/drm/xe/xe_pcode_api.h             |   5 +
 7 files changed, 396 insertions(+), 9 deletions(-)

-- 
2.25.1