diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2022-11-22 14:08:18 +0200 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2022-11-23 16:05:54 +0200 |
| commit | bf590368e540f87983769e7b9d4a5275f1edb81d (patch) | |
| tree | 1e55855d79cfc48d49255321c65a8b544e69369e /drivers/gpu/drm/i915/display/dvo_sil164.c | |
| parent | 49908b743f6ede9157771130ef24bc13389c9f2c (diff) | |
drm/i915/dvo/sil164: Fix suspend/resume
Poke a few more bits into the SiI164 to make it
recover after S3. HEN/VEN are the important bits,
the rest PLL filter/HPD detection I just did
for good measure to match the BIOS programming.
Note that the spec recommended SCNT bit in REGC
isn't set by the BIOS at least for me, so I left
it out.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221122120825.26338-4-ville.syrjala@linux.intel.com
Acked-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/display/dvo_sil164.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/dvo_sil164.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/dvo_sil164.c b/drivers/gpu/drm/i915/display/dvo_sil164.c index 32dd3b969946..4acc8ce29c0b 100644 --- a/drivers/gpu/drm/i915/display/dvo_sil164.c +++ b/drivers/gpu/drm/i915/display/dvo_sil164.c @@ -58,6 +58,10 @@ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. #define SIL164_9_MDI (1<<0) #define SIL164_REGC 0x0c +#define SIL164_C_SCNT (1<<7) +#define SIL164_C_PLLF_MASK (0xf<<1) +#define SIL164_C_PLLF_REC (4<<1) +#define SIL164_C_PFEN (1<<0) struct sil164_priv { //I2CDevRec d; @@ -205,6 +209,13 @@ static void sil164_mode_set(struct intel_dvo_device *dvo, sil164_writeb(sil, 0x0c, 0x89); sil164_writeb(sil, 0x08, 0x31);*/ /* don't do much */ + + sil164_writeb(dvo, SIL164_REG8, + SIL164_8_VEN | SIL164_8_HEN); + sil164_writeb(dvo, SIL164_REG9, + SIL164_9_TSEL); + sil164_writeb(dvo, SIL164_REGC, + SIL164_C_PLLF_REC | SIL164_C_PFEN); } /* set the SIL164 power state */ |