diff options
| author | Mahesh Kumar <mahesh1.kumar@intel.com> | 2018-10-16 05:37:52 +0300 |
|---|---|---|
| committer | Joonas Lahtinen <joonas.lahtinen@linux.intel.com> | 2018-10-18 10:26:25 +0300 |
| commit | 83db37385306072eca403ed80c0a8cf7b0d39e05 (patch) | |
| tree | ab2e937cfbf3c7901ea6a12d76a20bc2cbff1ad6 /drivers/gpu/drm | |
| parent | a9b84b4492774668237b19aa65536e934df51567 (diff) | |
| download | linux-83db37385306072eca403ed80c0a8cf7b0d39e05.tar.xz | |
drm/i915/icl: Fix DDI/TC port clk_off bits
DDI/TC clock-off bits are not equally distanced. TC1-3 bits are
from offset 12 & TC4 is at offset 21.
Create a function to choose correct clk-off bit.
v2: Add fixes tag (Lucas)
Fixes: c27e917e2bda ("drm/i915/icl: add basic support for the ICL clocks")
Signed-off-by: Mahesh Kumar <mahesh1.kumar@intel.com>
Signed-off-by: Vandita Kulkarni <vandita.kulkarni@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181016023752.9285-1-lucas.demarchi@intel.com
(cherry picked from commit bb1c7edc6d4d5cc6917814d858d47b22d2e93cde)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ddi.c | 21 |
2 files changed, 21 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 4948b352bf4c..7c491ea3d052 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -9339,6 +9339,9 @@ enum skl_power_gate { #define DPCLKA_CFGCR0_ICL _MMIO(0x164280) #define DPCLKA_CFGCR0_DDI_CLK_OFF(port) (1 << ((port) == PORT_F ? 23 : \ (port) + 10)) +#define ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(port) (1 << ((port) + 10)) +#define ICL_DPCLKA_CFGCR0_TC_CLK_OFF(tc_port) (1 << ((tc_port) == PORT_TC4 ? \ + 21 : (tc_port) + 12)) #define DPCLKA_CFGCR0_DDI_CLK_SEL_SHIFT(port) ((port) == PORT_F ? 21 : \ (port) * 2) #define DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(port) (3 << DPCLKA_CFGCR0_DDI_CLK_SEL_SHIFT(port)) diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index aeb7d337f2dc..5186cd7075f9 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -2733,6 +2733,21 @@ uint32_t ddi_signal_levels(struct intel_dp *intel_dp) return DDI_BUF_TRANS_SELECT(level); } +static inline +uint32_t icl_dpclka_cfgcr0_clk_off(struct drm_i915_private *dev_priv, + enum port port) +{ + if (intel_port_is_combophy(dev_priv, port)) { + return ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(port); + } else if (intel_port_is_tc(dev_priv, port)) { + enum tc_port tc_port = intel_port_to_tc(dev_priv, port); + + return ICL_DPCLKA_CFGCR0_TC_CLK_OFF(tc_port); + } + + return 0; +} + void icl_map_plls_to_ports(struct drm_crtc *crtc, struct intel_crtc_state *crtc_state, struct drm_atomic_state *old_state) @@ -2756,7 +2771,7 @@ void icl_map_plls_to_ports(struct drm_crtc *crtc, mutex_lock(&dev_priv->dpll_lock); val = I915_READ(DPCLKA_CFGCR0_ICL); - WARN_ON((val & DPCLKA_CFGCR0_DDI_CLK_OFF(port)) == 0); + WARN_ON((val & icl_dpclka_cfgcr0_clk_off(dev_priv, port)) == 0); if (intel_port_is_combophy(dev_priv, port)) { val &= ~DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(port); @@ -2765,7 +2780,7 @@ void icl_map_plls_to_ports(struct drm_crtc *crtc, POSTING_READ(DPCLKA_CFGCR0_ICL); } - val &= ~DPCLKA_CFGCR0_DDI_CLK_OFF(port); + val &= ~icl_dpclka_cfgcr0_clk_off(dev_priv, port); I915_WRITE(DPCLKA_CFGCR0_ICL, val); mutex_unlock(&dev_priv->dpll_lock); @@ -2793,7 +2808,7 @@ void icl_unmap_plls_to_ports(struct drm_crtc *crtc, mutex_lock(&dev_priv->dpll_lock); I915_WRITE(DPCLKA_CFGCR0_ICL, I915_READ(DPCLKA_CFGCR0_ICL) | - DPCLKA_CFGCR0_DDI_CLK_OFF(port)); + icl_dpclka_cfgcr0_clk_off(dev_priv, port)); mutex_unlock(&dev_priv->dpll_lock); } } |