public-mirrors/linux
1
0
Fork 0
mirror of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-08-04 08:17:46 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

drm/i915/icl: Fix the DP Max Voltage for ICL

Browse source 
On clock recovery this function is called to find out
the max voltage swing level that we could go.

However gen 9 functions use the old buffer translation tables
to figure that out. ICL uses different set of tables for eDP
and DP for both Combo and MG PHY ports. This patch adds the hook
for ICL for getting this information from appropriate buf trans tables.

v5 (from Paulo):
* New rebase after changes to earlier patches.
v4:
* Rebase.
v3:
* Follow the coding conventions here
(https://cgit.freedesktop.org/drm-intel/tree/Documentation/process/codin
g-style.rst#n191) (Paulo)
v2:
* Rebase after patch that adds voltage check inside buf trans
function (Rodrigo)

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@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/20180328215803.13835-9-paulo.r.zanoni@intel.com
This commit is contained in:
Manasi Navare 2018-03-28 14:58:03 -07:00 • committed by Paulo Zanoni
parent fb5c8e9d43
commit 36cf89f53b
1 changed files with 7 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
drivers/gpu/drm/i915/intel_ddi.c
View file

@ -2064,7 +2064,13 @@ u8 intel_ddi_dp_voltage_max(struct intel_encoder *encoder)
enum port port = encoder->port;
int n_entries;
if (IS_CANNONLAKE(dev_priv)) {
if (IS_ICELAKE(dev_priv)) {
if (port == PORT_A || port == PORT_B)
icl_get_combo_buf_trans(dev_priv, port, encoder->type,
&n_entries);
else
n_entries = ARRAY_SIZE(icl_mg_phy_ddi_translations);
} else if (IS_CANNONLAKE(dev_priv)) {
if (encoder->type == INTEL_OUTPUT_EDP)
cnl_get_buf_trans_edp(dev_priv, &n_entries);
else