From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
There's no good reason to keep around this PLL index == PLL ID
footgun. Get rid of it.
state->shared_dpll[] is now indexed by pll->index, which happens
to match the index for i915->shared_dplls[] but that detail
is inconsequential now. Everything else is all about PLL IDs now.
v2: Add pll->index to mimic drm_crtc & co.
Remove the comment saying ID should match the index
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_dpll_mgr.c | 67 +++++++++++--------
drivers/gpu/drm/i915/display/intel_dpll_mgr.h | 8 ++-
.../gpu/drm/i915/display/intel_pch_refclk.c | 5 +-
3 files changed, 48 insertions(+), 32 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
index b63600d8ebeb..78c63a2532c1 100644
--- a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
+++ b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
@@ -110,13 +110,13 @@ static void
intel_atomic_duplicate_dpll_state(struct drm_i915_private *dev_priv,
struct intel_shared_dpll_state *shared_dpll)
{
- enum intel_dpll_id i;
+ int i;
/* Copy shared dpll state */
for (i = 0; i < dev_priv->display.dpll.num_shared_dpll; i++) {
struct intel_shared_dpll *pll = &dev_priv->display.dpll.shared_dplls[i];
- shared_dpll[i] = pll->state;
+ shared_dpll[pll->index] = pll->state;
}
}
@@ -149,7 +149,17 @@ struct intel_shared_dpll *
intel_get_shared_dpll_by_id(struct drm_i915_private *dev_priv,
enum intel_dpll_id id)
{
- return &dev_priv->display.dpll.shared_dplls[id];
+ int i;
+
+ for (i = 0; i < dev_priv->display.dpll.num_shared_dpll; i++) {
+ struct intel_shared_dpll *pll = &dev_priv->display.dpll.shared_dplls[i];
+
+ if (pll->info->id == id)
+ return pll;
+ }
+
+ MISSING_CASE(id);
+ return NULL;
}
/* For ILK+ */
@@ -305,32 +315,36 @@ intel_find_shared_dpll(struct intel_atomic_state *state,
unsigned long dpll_mask)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
- struct intel_shared_dpll *pll, *unused_pll = NULL;
struct intel_shared_dpll_state *shared_dpll;
- enum intel_dpll_id i;
+ struct intel_shared_dpll *unused_pll = NULL;
+ enum intel_dpll_id id;
shared_dpll = intel_atomic_get_shared_dpll_state(&state->base);
drm_WARN_ON(&dev_priv->drm, dpll_mask & ~(BIT(I915_NUM_PLLS) - 1));
- for_each_set_bit(i, &dpll_mask, I915_NUM_PLLS) {
- pll = &dev_priv->display.dpll.shared_dplls[i];
+ for_each_set_bit(id, &dpll_mask, I915_NUM_PLLS) {
+ struct intel_shared_dpll *pll;
+
+ pll = intel_get_shared_dpll_by_id(dev_priv, id);
+ if (!pll)
+ continue;
/* Only want to check enabled timings first */
- if (shared_dpll[i].pipe_mask == 0) {
+ if (shared_dpll[pll->index].pipe_mask == 0) {
if (!unused_pll)
unused_pll = pll;
continue;
}
if (memcmp(pll_state,
- &shared_dpll[i].hw_state,
+ &shared_dpll[pll->index].hw_state,
sizeof(*pll_state)) == 0) {
drm_dbg_kms(&dev_priv->drm,
"[CRTC:%d:%s] sharing existing %s (pipe mask 0x%x, active 0x%x)\n",
crtc->base.base.id, crtc->base.name,
pll->info->name,
- shared_dpll[i].pipe_mask,
+ shared_dpll[pll->index].pipe_mask,
pll->active_mask);
return pll;
}
@@ -355,16 +369,15 @@ intel_reference_shared_dpll(struct intel_atomic_state *state,
{
struct drm_i915_private *i915 = to_i915(state->base.dev);
struct intel_shared_dpll_state *shared_dpll;
- const enum intel_dpll_id id = pll->info->id;
shared_dpll = intel_atomic_get_shared_dpll_state(&state->base);
- if (shared_dpll[id].pipe_mask == 0)
- shared_dpll[id].hw_state = *pll_state;
+ if (shared_dpll[pll->index].pipe_mask == 0)
+ shared_dpll[pll->index].hw_state = *pll_state;
- drm_WARN_ON(&i915->drm, (shared_dpll[id].pipe_mask & BIT(crtc->pipe)) != 0);
+ drm_WARN_ON(&i915->drm, (shared_dpll[pll->index].pipe_mask & BIT(crtc->pipe)) != 0);
- shared_dpll[id].pipe_mask |= BIT(crtc->pipe);
+ shared_dpll[pll->index].pipe_mask |= BIT(crtc->pipe);
drm_dbg_kms(&i915->drm, "[CRTC:%d:%s] reserving %s\n",
crtc->base.base.id, crtc->base.name, pll->info->name);
@@ -376,13 +389,12 @@ static void intel_unreference_shared_dpll(struct intel_atomic_state *state,
{
struct drm_i915_private *i915 = to_i915(state->base.dev);
struct intel_shared_dpll_state *shared_dpll;
- const enum intel_dpll_id id = pll->info->id;
shared_dpll = intel_atomic_get_shared_dpll_state(&state->base);
- drm_WARN_ON(&i915->drm, (shared_dpll[id].pipe_mask & BIT(crtc->pipe)) == 0);
+ drm_WARN_ON(&i915->drm, (shared_dpll[pll->index].pipe_mask & BIT(crtc->pipe)) == 0);
- shared_dpll[id].pipe_mask &= ~BIT(crtc->pipe);
+ shared_dpll[pll->index].pipe_mask &= ~BIT(crtc->pipe);
drm_dbg_kms(&i915->drm, "[CRTC:%d:%s] releasing %s\n",
crtc->base.base.id, crtc->base.name, pll->info->name);
@@ -419,16 +431,15 @@ void intel_shared_dpll_swap_state(struct intel_atomic_state *state)
{
struct drm_i915_private *dev_priv = to_i915(state->base.dev);
struct intel_shared_dpll_state *shared_dpll = state->shared_dpll;
- enum intel_dpll_id i;
+ int i;
if (!state->dpll_set)
return;
for (i = 0; i < dev_priv->display.dpll.num_shared_dpll; i++) {
- struct intel_shared_dpll *pll =
- &dev_priv->display.dpll.shared_dplls[i];
+ struct intel_shared_dpll *pll = &dev_priv->display.dpll.shared_dplls[i];
- swap(pll->state, shared_dpll[i]);
+ swap(pll->state, shared_dpll[pll->index]);
}
}
@@ -520,12 +531,12 @@ static int ibx_get_dpll(struct intel_atomic_state *state,
intel_atomic_get_new_crtc_state(state, crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
struct intel_shared_dpll *pll;
- enum intel_dpll_id i;
+ enum intel_dpll_id id;
if (HAS_PCH_IBX(dev_priv)) {
/* Ironlake PCH has a fixed PLL->PCH pipe mapping. */
- i = (enum intel_dpll_id) crtc->pipe;
- pll = &dev_priv->display.dpll.shared_dplls[i];
+ id = (enum intel_dpll_id) crtc->pipe;
+ pll = intel_get_shared_dpll_by_id(dev_priv, id);
drm_dbg_kms(&dev_priv->drm,
"[CRTC:%d:%s] using pre-allocated %s\n",
@@ -4199,10 +4210,8 @@ void intel_shared_dpll_init(struct drm_i915_private *dev_priv)
else if (HAS_PCH_IBX(dev_priv) || HAS_PCH_CPT(dev_priv))
dpll_mgr = &pch_pll_mgr;
- if (!dpll_mgr) {
- dev_priv->display.dpll.num_shared_dpll = 0;
+ if (!dpll_mgr)
return;
- }
dpll_info = dpll_mgr->dpll_info;
@@ -4211,8 +4220,8 @@ void intel_shared_dpll_init(struct drm_i915_private *dev_priv)
i >= ARRAY_SIZE(dev_priv->display.dpll.shared_dplls)))
break;
- drm_WARN_ON(&dev_priv->drm, i != dpll_info[i].id);
dev_priv->display.dpll.shared_dplls[i].info = &dpll_info[i];
+ dev_priv->display.dpll.shared_dplls[i].index = i;
}
dev_priv->display.dpll.mgr = dpll_mgr;
diff --git a/drivers/gpu/drm/i915/display/intel_dpll_mgr.h b/drivers/gpu/drm/i915/display/intel_dpll_mgr.h
index 3854f1b4299a..b8dce4e9ac54 100644
--- a/drivers/gpu/drm/i915/display/intel_dpll_mgr.h
+++ b/drivers/gpu/drm/i915/display/intel_dpll_mgr.h
@@ -269,8 +269,7 @@ struct dpll_info {
const struct intel_shared_dpll_funcs *funcs;
/**
- * @id: unique indentifier for this DPLL; should match the index in the
- * dev_priv->shared_dplls array
+ * @id: unique indentifier for this DPLL
*/
enum intel_dpll_id id;
@@ -297,6 +296,11 @@ struct intel_shared_dpll {
*/
struct intel_shared_dpll_state state;
+ /**
+ * @index: index for atomic state
+ */
+ u8 index;
+
/**
* @active_mask: mask of active pipes (i.e. DPMS on) using this DPLL
*/
diff --git a/drivers/gpu/drm/i915/display/intel_pch_refclk.c b/drivers/gpu/drm/i915/display/intel_pch_refclk.c
index a66097cdc1e0..4db4b8d57e21 100644
--- a/drivers/gpu/drm/i915/display/intel_pch_refclk.c
+++ b/drivers/gpu/drm/i915/display/intel_pch_refclk.c
@@ -533,7 +533,10 @@ static void ilk_init_pch_refclk(struct drm_i915_private *dev_priv)
/* Check if any DPLLs are using the SSC source */
for (i = 0; i < dev_priv->display.dpll.num_shared_dpll; i++) {
- u32 temp = intel_de_read(dev_priv, PCH_DPLL(i));
+ struct intel_shared_dpll *pll = &dev_priv->display.dpll.shared_dplls[i];
+ u32 temp;
+
+ temp = intel_de_read(dev_priv, PCH_DPLL(pll->info->id));
if (!(temp & DPLL_VCO_ENABLE))
continue;
--
2.35.1
