diff options
| author | José Roberto de Souza <jose.souza@intel.com> | 2018-09-18 13:47:10 -0700 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2018-09-26 17:06:09 -0700 |
| commit | 6edafc4eb3e4ae26b1b5dbc0cabfc82d96d6b9bb (patch) | |
| tree | 4841906900c7ce3945472880e2c95237fa4abd9b /drivers/gpu/drm/i915/intel_runtime_pm.c | |
| parent | 7c86828d564574759c20793ced59df2a60950c1d (diff) | |
drm/i915: Unset reset pch handshake when PCH is not present in one place
Right now RESET_PCH_HANDSHAKE_ENABLE is enabled all the times inside
of intel_power_domains_init_hw() and if PCH is NOP it is unsed in
i915_gem_init_hw().
So making skl_pch_reset_handshake() handle both cases and calling
it for the missing gens in intel_power_domains_init_hw().
Ivybridge have a different register and bits but with the same
objective so moving it too.
v2(Rodrigo):
- handling IVYBRIDGE case inside intel_pch_reset_handshake()
v4(Rodrigo and Ville):
- moving the enable/disable decision to callers
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180918204714.27306-2-jose.souza@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_runtime_pm.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_runtime_pm.c | 28 |
1 files changed, 20 insertions, 8 deletions
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c index d051b0d440c4..3cf8533e0834 100644 --- a/drivers/gpu/drm/i915/intel_runtime_pm.c +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c @@ -3243,14 +3243,25 @@ static void icl_mbus_init(struct drm_i915_private *dev_priv) static void intel_pch_reset_handshake(struct drm_i915_private *dev_priv, bool enable) { - u32 val = I915_READ(HSW_NDE_RSTWRN_OPT); + i915_reg_t reg; + u32 reset_bits, val; + + if (IS_IVYBRIDGE(dev_priv)) { + reg = GEN7_MSG_CTL; + reset_bits = WAIT_FOR_PCH_FLR_ACK | WAIT_FOR_PCH_RESET_ACK; + } else { + reg = HSW_NDE_RSTWRN_OPT; + reset_bits = RESET_PCH_HANDSHAKE_ENABLE; + } + + val = I915_READ(reg); if (enable) - val |= RESET_PCH_HANDSHAKE_ENABLE; + val |= reset_bits; else - val &= ~RESET_PCH_HANDSHAKE_ENABLE; + val &= ~reset_bits; - I915_WRITE(HSW_NDE_RSTWRN_OPT, val); + I915_WRITE(reg, val); } static void skl_display_core_init(struct drm_i915_private *dev_priv, @@ -3262,7 +3273,7 @@ static void skl_display_core_init(struct drm_i915_private *dev_priv, gen9_set_dc_state(dev_priv, DC_STATE_DISABLE); /* enable PCH reset handshake */ - intel_pch_reset_handshake(dev_priv, true); + intel_pch_reset_handshake(dev_priv, !HAS_PCH_NOP(dev_priv)); /* enable PG1 and Misc I/O */ mutex_lock(&power_domains->lock); @@ -3448,7 +3459,7 @@ static void cnl_display_core_init(struct drm_i915_private *dev_priv, bool resume gen9_set_dc_state(dev_priv, DC_STATE_DISABLE); /* 1. Enable PCH Reset Handshake */ - intel_pch_reset_handshake(dev_priv, true); + intel_pch_reset_handshake(dev_priv, !HAS_PCH_NOP(dev_priv)); /* 2. Enable Comp */ val = I915_READ(CHICKEN_MISC_2); @@ -3531,7 +3542,7 @@ static void icl_display_core_init(struct drm_i915_private *dev_priv, gen9_set_dc_state(dev_priv, DC_STATE_DISABLE); /* 1. Enable PCH reset handshake. */ - intel_pch_reset_handshake(dev_priv, true); + intel_pch_reset_handshake(dev_priv, !HAS_PCH_NOP(dev_priv)); for (port = PORT_A; port <= PORT_B; port++) { /* 2. Enable DDI combo PHY comp. */ @@ -3763,7 +3774,8 @@ void intel_power_domains_init_hw(struct drm_i915_private *dev_priv, bool resume) mutex_lock(&power_domains->lock); vlv_cmnlane_wa(dev_priv); mutex_unlock(&power_domains->lock); - } + } else if (IS_IVYBRIDGE(dev_priv) || INTEL_GEN(dev_priv) >= 7) + intel_pch_reset_handshake(dev_priv, !HAS_PCH_NOP(dev_priv)); /* * Keep all power wells enabled for any dependent HW access during |