diff options
| author | Matt Roper <matthew.d.roper@intel.com> | 2020-07-16 15:05:50 -0700 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2020-08-17 16:16:07 -0400 |
| commit | ddff9a602e5e65e99ca6516151ee775560156697 (patch) | |
| tree | e83990d7dee445d88b9846afee469495470aa3c0 /drivers/gpu/drm/i915/i915_reg.h | |
| parent | e66f609baeee0d8354d3e1aa7d171a54ce72cb34 (diff) | |
drm/i915/rkl: Handle HTI
If HTI (also sometimes called HDPORT) is enabled at startup, it may be
using some of the PHYs and DPLLs making them unavailable for general
usage. Let's read out the HDPORT_STATE register and avoid making use of
resources that HTI is already using.
v2:
- Fix minor checkpatch warnings
v3:
- Just readout HDPORT_STATE register once during init and then parse it
later as needed.
- Add a 'has_hti' device info flag to track whether we should readout
HDPORT_STATE or not. We can skip the platform/flag tests later since
the hti_state in dev_priv will remain 0 for platforms it does not
apply to.
- Move PLL masking into icl_get_combo_phy_dpll() since at the moment
RKL is the only platform that has HTI. (Jose)
Bspec: 49189
Bspec: 53707
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200716220551.2730644-5-matthew.d.roper@intel.com
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_reg.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index bfdb6d23b5d8..89a9f2d8110e 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -2921,6 +2921,12 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg) #define MBUS_BBOX_CTL_S1 _MMIO(0x45040) #define MBUS_BBOX_CTL_S2 _MMIO(0x45044) +#define HDPORT_STATE _MMIO(0x45050) +#define HDPORT_DPLL_USED_MASK REG_GENMASK(14, 12) +#define HDPORT_PHY_USED_DP(phy) REG_BIT(2 * (phy) + 2) +#define HDPORT_PHY_USED_HDMI(phy) REG_BIT(2 * (phy) + 1) +#define HDPORT_ENABLED REG_BIT(0) + /* Make render/texture TLB fetches lower priorty than associated data * fetches. This is not turned on by default */ |