linux/drivers/gpu
Manasi Navare 19b904f8df drm/i915/icl: Add Combo PHY DDI Buffer translation tables for Icelake.
These tables are used on voltage vswing sequence initialization on
Icelake.

The swing_sel on the spec's table is defined in a 4 bits binary like
1010.  However the register bits are split in upper 1 bit swing_sel
and lower 3 bits swing sel.

In this table here we store this value as a single value in hex like
it is mentioned in the Bspec and split it to the upper and lower bit
values only while programming the registers.

For instance: b1010 is written as 0xA and then while writing to the
register, the upper 1 bit is obtained by (0xA & 0x8) and shifting by
appropriate bits while lower 3 bits are obtained by (0xA & 0x7) and
shifting by appropriate bits.

Some of the columns need to be updated after the spec is updated.

v5 (from Paulo):
* Checkpatch fixes.
v4 (from Paulo):
* Fix minor typo
* Coding style conformance
v3:
* Get rid of HDMI/DVI tables, same as DP (Paulo)
* Use combo_phy in ddi buf trans table defs (Paulo)
v2:
* Added DW4_scaling_hex column to the translation tables (Rodrigo)

Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180323172419.24911-3-paulo.r.zanoni@intel.com
2018-03-23 14:55:23 -07:00
..
drm drm/i915/icl: Add Combo PHY DDI Buffer translation tables for Icelake. 2018-03-23 14:55:23 -07:00
host1x gpu: host1x: Use IOMMU groups 2017-12-21 14:52:36 +01:00
ipu-v3 gpu: ipu-v3: allow to build with COMPILE_TEST 2017-12-19 12:49:11 +01:00
vga vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
Makefile