[Intel-gfx] [PATCH 15/15] drm/i915: Split PNV version of crtc_compute_clock()
Ander Conselvan de Oliveira
ander.conselvan.de.oliveira at intel.com
Mon Mar 21 16:00:16 UTC 2016
Split a pnv_crtc_compute_clock(), so the differences between platforms
become more obvious.
With this, there are no more users of intel_limit() or the ->find_dpll()
hook, so get rid of them.
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira at intel.com>
---
drivers/gpu/drm/i915/i915_drv.h | 18 -----
drivers/gpu/drm/i915/intel_display.c | 134 +++++++++++++++++++++--------------
2 files changed, 79 insertions(+), 73 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index efca534..83ee8d7 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -575,24 +575,6 @@ struct dpll;
struct drm_i915_display_funcs {
int (*get_display_clock_speed)(struct drm_device *dev);
int (*get_fifo_size)(struct drm_device *dev, int plane);
- /**
- * find_dpll() - Find the best values for the PLL
- * @limit: limits for the PLL
- * @crtc: current CRTC
- * @target: target frequency in kHz
- * @refclk: reference clock frequency in kHz
- * @match_clock: if provided, @best_clock P divider must
- * match the P divider from @match_clock
- * used for LVDS downclocking
- * @best_clock: best PLL values found
- *
- * Returns true on success, false on failure.
- */
- bool (*find_dpll)(const struct intel_limit *limit,
- struct intel_crtc_state *crtc_state,
- int target, int refclk,
- struct dpll *match_clock,
- struct dpll *best_clock);
int (*compute_pipe_wm)(struct intel_crtc_state *cstate);
int (*compute_intermediate_wm)(struct drm_device *dev,
struct intel_crtc *intel_crtc,
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 552fd4c..4d7c29a 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -566,33 +566,6 @@ static bool intel_pipe_will_have_type(const struct intel_crtc_state *crtc_state,
return false;
}
-static const intel_limit_t *
-intel_limit(struct intel_crtc_state *crtc_state, int refclk)
-{
- struct drm_device *dev = crtc_state->base.crtc->dev;
- const intel_limit_t *limit;
-
- if (IS_BROXTON(dev) || IS_CHERRYVIEW(dev) || IS_VALLEYVIEW(dev) ||
- HAS_PCH_SPLIT(dev) || IS_G4X(dev) || IS_GEN2(dev))
- limit = NULL;
-
- if (IS_PINEVIEW(dev)) {
- if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS))
- limit = &intel_limits_pineview_lvds;
- else
- limit = &intel_limits_pineview_sdvo;
- } else if (!IS_GEN2(dev)) {
- if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS))
- limit = &intel_limits_i9xx_lvds;
- else
- limit = &intel_limits_i9xx_sdvo;
- }
-
- WARN_ON(limit == NULL);
-
- return limit;
-}
-
/*
* Platform specific helpers to calculate the port PLL loopback- (clock.m),
* and post-divider (clock.p) values, pre- (clock.vco) and post-divided fast
@@ -723,6 +696,16 @@ i9xx_select_p2_div(const intel_limit_t *limit,
}
}
+/*
+ * Returns a set of divisors for the desired target clock with the given
+ * refclk, or FALSE. The returned values represent the clock equation:
+ * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
+ *
+ * Target and reference clocks are specified in kHz.
+ *
+ * If match_clock is provided, then best_clock P divider must match the P
+ * divider from @match_clock used for LVDS downclocking.
+ */
static bool
i9xx_find_best_dpll(const intel_limit_t *limit,
struct intel_crtc_state *crtc_state,
@@ -770,6 +753,16 @@ i9xx_find_best_dpll(const intel_limit_t *limit,
return (err != target);
}
+/*
+ * Returns a set of divisors for the desired target clock with the given
+ * refclk, or FALSE. The returned values represent the clock equation:
+ * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
+ *
+ * Target and reference clocks are specified in kHz.
+ *
+ * If match_clock is provided, then best_clock P divider must match the P
+ * divider from @match_clock used for LVDS downclocking.
+ */
static bool
pnv_find_best_dpll(const intel_limit_t *limit,
struct intel_crtc_state *crtc_state,
@@ -819,6 +812,11 @@ pnv_find_best_dpll(const intel_limit_t *limit,
* Returns a set of divisors for the desired target clock with the given
* refclk, or FALSE. The returned values represent the clock equation:
* reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
+ *
+ * Target and reference clocks are specified in kHz.
+ *
+ * If match_clock is provided, then best_clock P divider must match the P
+ * divider from @match_clock used for LVDS downclocking.
*/
static bool
g4x_find_best_dpll(const intel_limit_t *limit,
@@ -7904,43 +7902,67 @@ static int g4x_crtc_compute_clock(struct intel_crtc *crtc,
return 0;
}
+static int pnv_crtc_compute_clock(struct intel_crtc *crtc,
+ struct intel_crtc_state *crtc_state)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ const intel_limit_t *limit;
+ int refclk = 96000;
+
+ memset(&crtc_state->dpll_hw_state, 0,
+ sizeof(crtc_state->dpll_hw_state));
+
+ if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
+ if (intel_panel_use_ssc(dev_priv)) {
+ refclk = dev_priv->vbt.lvds_ssc_freq;
+ DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", refclk);
+ }
+
+ limit = &intel_limits_pineview_lvds;
+ } else {
+ limit = &intel_limits_pineview_sdvo;
+ }
+
+ if (!crtc_state->clock_set &&
+ !pnv_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
+ refclk, NULL, &crtc_state->dpll)) {
+ DRM_ERROR("Couldn't find PLL settings for mode!\n");
+ return -EINVAL;
+ }
+
+ i9xx_compute_dpll(crtc, crtc_state, NULL);
+
+ return 0;
+}
+
static int i9xx_crtc_compute_clock(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- bool ok;
const intel_limit_t *limit;
int refclk = 96000;
memset(&crtc_state->dpll_hw_state, 0,
sizeof(crtc_state->dpll_hw_state));
- if (crtc_state->has_dsi_encoder)
- return 0;
+ if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
+ if (intel_panel_use_ssc(dev_priv)) {
+ refclk = dev_priv->vbt.lvds_ssc_freq;
+ DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", refclk);
+ }
- if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS) &&
- intel_panel_use_ssc(dev_priv)) {
- refclk = dev_priv->vbt.lvds_ssc_freq;
- DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", refclk);
+ limit = &intel_limits_i9xx_lvds;
+ } else {
+ limit = &intel_limits_i9xx_sdvo;
}
- if (!crtc_state->clock_set) {
- /*
- * Returns a set of divisors for the desired target clock with
- * the given refclk, or FALSE. The returned values represent
- * the clock equation: reflck * (5 * (m1 + 2) + (m2 + 2)) / (n +
- * 2) / p1 / p2.
- */
- limit = intel_limit(crtc_state, refclk);
- ok = dev_priv->display.find_dpll(limit, crtc_state,
- crtc_state->port_clock,
- refclk, NULL,
- &crtc_state->dpll);
- if (!ok) {
- DRM_ERROR("Couldn't find PLL settings for mode!\n");
- return -EINVAL;
- }
+ if (!crtc_state->clock_set &&
+ !i9xx_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
+ refclk, NULL, &crtc_state->dpll)) {
+ DRM_ERROR("Couldn't find PLL settings for mode!\n");
+ return -EINVAL;
}
i9xx_compute_dpll(crtc, crtc_state, NULL);
@@ -14925,11 +14947,6 @@ static const struct drm_mode_config_funcs intel_mode_funcs = {
*/
void intel_init_display_hooks(struct drm_i915_private *dev_priv)
{
- if (IS_PINEVIEW(dev_priv))
- dev_priv->display.find_dpll = pnv_find_best_dpll;
- else
- dev_priv->display.find_dpll = i9xx_find_best_dpll;
-
if (INTEL_INFO(dev_priv)->gen >= 9) {
dev_priv->display.get_pipe_config = haswell_get_pipe_config;
dev_priv->display.get_initial_plane_config =
@@ -14975,6 +14992,13 @@ void intel_init_display_hooks(struct drm_i915_private *dev_priv)
dev_priv->display.crtc_compute_clock = g4x_crtc_compute_clock;
dev_priv->display.crtc_enable = i9xx_crtc_enable;
dev_priv->display.crtc_disable = i9xx_crtc_disable;
+ } else if (IS_PINEVIEW(dev_priv)) {
+ dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
+ dev_priv->display.get_initial_plane_config =
+ i9xx_get_initial_plane_config;
+ dev_priv->display.crtc_compute_clock = pnv_crtc_compute_clock;
+ dev_priv->display.crtc_enable = i9xx_crtc_enable;
+ dev_priv->display.crtc_disable = i9xx_crtc_disable;
} else if (!IS_GEN2(dev_priv)) {
dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
dev_priv->display.get_initial_plane_config =
--
2.4.3
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