diff options
| author | José Roberto de Souza <jose.souza@intel.com> | 2021-07-01 00:05:22 +0300 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2021-07-06 22:10:58 +0300 |
| commit | 995e9bcb42f99b68a45400f51bbbf41bb871ba2f (patch) | |
| tree | 5611e3007d476cf1e8f14a1bfa75b63d20beb1c7 /drivers | |
| parent | 07b72960d2b4a087ff2445e286159e69742069cc (diff) | |
| download | linux-995e9bcb42f99b68a45400f51bbbf41bb871ba2f.tar.xz | |
drm/i915/display/dg1: Correctly map DPLLs during state readout
_DG1_DPCLKA0_CFGCR0 maps between DPLL 0 and 1 with one bit for phy A
and B while _DG1_DPCLKA1_CFGCR0 maps between DPLL 2 and 3 with one
bit for phy C and D.
Reusing _cnl_ddi_get_pll() don't take that into cosideration returing
DPLL 0 and 1 for phy C and D.
That is a regression introduced in the refactor done in
commit 351221ffc5e5 ("drm/i915: Move DDI clock readout to
encoder->get_config()").
While at it also dropping the macros previously used, not reusing it
to improve readability.
BSpec: 50286
Fixes: 351221ffc5e5 ("drm/i915: Move DDI clock readout to encoder->get_config()")
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210630210522.162674-1-jose.souza@intel.com
(cherry picked from commit 3352d86dcd3336a117630f0c1cfbc6bb8c93e1cf)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_ddi.c | 19 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 3 |
2 files changed, 16 insertions, 6 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index 390869bd6b63..be716b56e8e0 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -1791,10 +1791,23 @@ static struct intel_shared_dpll *dg1_ddi_get_pll(struct intel_encoder *encoder) { struct drm_i915_private *i915 = to_i915(encoder->base.dev); enum phy phy = intel_port_to_phy(i915, encoder->port); + enum intel_dpll_id id; + u32 val; - return _cnl_ddi_get_pll(i915, DG1_DPCLKA_CFGCR0(phy), - DG1_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy), - DG1_DPCLKA_CFGCR0_DDI_CLK_SEL_SHIFT(phy)); + val = intel_de_read(i915, DG1_DPCLKA_CFGCR0(phy)); + val &= DG1_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy); + val >>= DG1_DPCLKA_CFGCR0_DDI_CLK_SEL_SHIFT(phy); + id = val; + + /* + * _DG1_DPCLKA0_CFGCR0 maps between DPLL 0 and 1 with one bit for phy A + * and B while _DG1_DPCLKA1_CFGCR0 maps between DPLL 2 and 3 with one + * bit for phy C and D. + */ + if (phy >= PHY_C) + id += DPLL_ID_DG1_DPLL2; + + return intel_get_shared_dpll_by_id(i915, id); } static void icl_ddi_combo_enable_clock(struct intel_encoder *encoder, diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index e915ec034c98..94fde5ca26ae 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -10513,7 +10513,6 @@ enum skl_power_gate { #define _DG1_DPCLKA1_CFGCR0 0x16C280 #define _DG1_DPCLKA_PHY_IDX(phy) ((phy) % 2) #define _DG1_DPCLKA_PLL_IDX(pll) ((pll) % 2) -#define _DG1_PHY_DPLL_MAP(phy) ((phy) >= PHY_C ? DPLL_ID_DG1_DPLL2 : DPLL_ID_DG1_DPLL0) #define DG1_DPCLKA_CFGCR0(phy) _MMIO_PHY((phy) / 2, \ _DG1_DPCLKA_CFGCR0, \ _DG1_DPCLKA1_CFGCR0) @@ -10521,8 +10520,6 @@ enum skl_power_gate { #define DG1_DPCLKA_CFGCR0_DDI_CLK_SEL_SHIFT(phy) (_DG1_DPCLKA_PHY_IDX(phy) * 2) #define DG1_DPCLKA_CFGCR0_DDI_CLK_SEL(pll, phy) (_DG1_DPCLKA_PLL_IDX(pll) << DG1_DPCLKA_CFGCR0_DDI_CLK_SEL_SHIFT(phy)) #define DG1_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy) (0x3 << DG1_DPCLKA_CFGCR0_DDI_CLK_SEL_SHIFT(phy)) -#define DG1_DPCLKA_CFGCR0_DDI_CLK_SEL_DPLL_MAP(clk_sel, phy) \ - (((clk_sel) >> DG1_DPCLKA_CFGCR0_DDI_CLK_SEL_SHIFT(phy)) + _DG1_PHY_DPLL_MAP(phy)) /* ADLS Clocks */ #define _ADLS_DPCLKA_CFGCR0 0x164280 |