aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--drivers/gpu/drm/i915/i915_drv.h2
-rw-r--r--drivers/gpu/drm/i915/intel_display.c109
-rw-r--r--drivers/gpu/drm/i915/intel_dpll_mgr.c9
-rw-r--r--drivers/gpu/drm/i915/intel_drv.h4
4 files changed, 104 insertions, 20 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 17fe272e9ef8..edef5e28df7b 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1815,7 +1815,7 @@ struct drm_i915_private {
int num_fence_regs; /* 8 on pre-965, 16 otherwise */
unsigned int fsb_freq, mem_freq, is_ddr3;
- unsigned int skl_boot_cdclk;
+ unsigned int skl_vco_freq;
unsigned int cdclk_freq, max_cdclk_freq, atomic_cdclk_freq;
unsigned int max_dotclk_freq;
unsigned int rawclk_freq;
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 9e7bc1dc4cb1..964e9644b8fc 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5460,7 +5460,7 @@ static const struct skl_cdclk_entry {
{ .freq = 675000, .vco = 8100 },
};
-static unsigned int skl_cdclk_get_vco(unsigned int freq)
+unsigned int skl_cdclk_get_vco(unsigned int freq)
{
unsigned int i;
@@ -5618,17 +5618,21 @@ void skl_uninit_cdclk(struct drm_i915_private *dev_priv)
void skl_init_cdclk(struct drm_i915_private *dev_priv)
{
- unsigned int vco;
+ unsigned int cdclk;
/* DPLL0 not enabled (happens on early BIOS versions) */
if (!(I915_READ(LCPLL1_CTL) & LCPLL_PLL_ENABLE)) {
/* enable DPLL0 */
- vco = skl_cdclk_get_vco(dev_priv->skl_boot_cdclk);
- skl_dpll0_enable(dev_priv, vco);
+ if (dev_priv->skl_vco_freq != 8640)
+ dev_priv->skl_vco_freq = 8100;
+ skl_dpll0_enable(dev_priv, dev_priv->skl_vco_freq);
+ cdclk = ((dev_priv->skl_vco_freq == 8100) ? 337500 : 308570);
+ } else {
+ cdclk = dev_priv->cdclk_freq;
}
- /* set CDCLK to the frequency the BIOS chose */
- skl_set_cdclk(dev_priv, dev_priv->skl_boot_cdclk);
+ /* set CDCLK to the lowest frequency, Modeset follows */
+ skl_set_cdclk(dev_priv, cdclk);
/* enable DBUF power */
I915_WRITE(DBUF_CTL, I915_READ(DBUF_CTL) | DBUF_POWER_REQUEST);
@@ -5644,7 +5648,7 @@ int skl_sanitize_cdclk(struct drm_i915_private *dev_priv)
{
uint32_t lcpll1 = I915_READ(LCPLL1_CTL);
uint32_t cdctl = I915_READ(CDCLK_CTL);
- int freq = dev_priv->skl_boot_cdclk;
+ int freq = dev_priv->cdclk_freq;
/*
* check if the pre-os intialized the display
@@ -5668,11 +5672,7 @@ int skl_sanitize_cdclk(struct drm_i915_private *dev_priv)
/* All well; nothing to sanitize */
return false;
sanitize:
- /*
- * As of now initialize with max cdclk till
- * we get dynamic cdclk support
- * */
- dev_priv->skl_boot_cdclk = dev_priv->max_cdclk_freq;
+
skl_init_cdclk(dev_priv);
/* we did have to sanitize */
@@ -9645,6 +9645,73 @@ static void broadwell_modeset_commit_cdclk(struct drm_atomic_state *old_state)
broadwell_set_cdclk(dev, req_cdclk);
}
+static int skl_modeset_calc_cdclk(struct drm_atomic_state *state)
+{
+ struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
+ struct drm_i915_private *dev_priv = to_i915(state->dev);
+ const int max_pixclk = ilk_max_pixel_rate(state);
+ int cdclk;
+
+ /*
+ * FIXME should also account for plane ratio
+ * once 64bpp pixel formats are supported.
+ */
+
+ if (intel_state->cdclk_pll_vco == 8640) {
+ /* vco 8640 */
+ if (max_pixclk > 540000)
+ cdclk = 617140;
+ else if (max_pixclk > 432000)
+ cdclk = 540000;
+ else if (max_pixclk > 308570)
+ cdclk = 432000;
+ else
+ cdclk = 308570;
+ } else {
+ /* VCO 8100 */
+ if (max_pixclk > 540000)
+ cdclk = 675000;
+ else if (max_pixclk > 450000)
+ cdclk = 540000;
+ else if (max_pixclk > 337500)
+ cdclk = 450000;
+ else
+ cdclk = 337500;
+ }
+
+ /*
+ * FIXME move the cdclk caclulation to
+ * compute_config() so we can fail gracegully.
+ */
+ if (cdclk > dev_priv->max_cdclk_freq) {
+ DRM_ERROR("requested cdclk (%d kHz) exceeds max (%d kHz)\n",
+ cdclk, dev_priv->max_cdclk_freq);
+ cdclk = dev_priv->max_cdclk_freq;
+ }
+
+ intel_state->cdclk = intel_state->dev_cdclk = cdclk;
+ if (!intel_state->active_crtcs)
+ intel_state->dev_cdclk = ((intel_state->cdclk_pll_vco == 8640) ?
+ 308570 : 337500);
+
+
+ return 0;
+}
+
+static void skl_modeset_commit_cdclk(struct drm_atomic_state *old_state)
+{
+ struct drm_device *dev = old_state->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ unsigned int req_cdclk = to_intel_atomic_state(old_state)->dev_cdclk;
+
+ /*
+ * FIXME disable/enable PLL should wrap set_cdclk()
+ */
+ skl_set_cdclk(dev_priv, req_cdclk);
+
+ dev_priv->skl_vco_freq = to_intel_atomic_state(old_state)->cdclk_pll_vco;
+}
+
static int haswell_crtc_compute_clock(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state)
{
@@ -12575,9 +12642,15 @@ static int intel_modeset_checks(struct drm_atomic_state *state)
* adjusted_mode bits in the crtc directly.
*/
if (dev_priv->display.modeset_calc_cdclk) {
+ if (!intel_state->cdclk_pll_vco)
+ intel_state->cdclk_pll_vco = dev_priv->skl_vco_freq;
+
ret = dev_priv->display.modeset_calc_cdclk(state);
+ if (ret < 0)
+ return ret;
- if (!ret && intel_state->dev_cdclk != dev_priv->cdclk_freq)
+ if (intel_state->dev_cdclk != dev_priv->cdclk_freq ||
+ intel_state->cdclk_pll_vco != dev_priv->skl_vco_freq)
ret = intel_modeset_all_pipes(state);
if (ret < 0)
@@ -13063,7 +13136,8 @@ static int intel_atomic_commit(struct drm_device *dev,
drm_atomic_helper_update_legacy_modeset_state(state->dev, state);
if (dev_priv->display.modeset_commit_cdclk &&
- intel_state->dev_cdclk != dev_priv->cdclk_freq)
+ (intel_state->dev_cdclk != dev_priv->cdclk_freq ||
+ intel_state->cdclk_pll_vco != dev_priv->skl_vco_freq))
dev_priv->display.modeset_commit_cdclk(state);
intel_modeset_verify_disabled(dev);
@@ -14449,6 +14523,11 @@ void intel_init_display_hooks(struct drm_i915_private *dev_priv)
broxton_modeset_commit_cdclk;
dev_priv->display.modeset_calc_cdclk =
broxton_modeset_calc_cdclk;
+ } else if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) {
+ dev_priv->display.modeset_commit_cdclk =
+ skl_modeset_commit_cdclk;
+ dev_priv->display.modeset_calc_cdclk =
+ skl_modeset_calc_cdclk;
}
}
@@ -15128,7 +15207,7 @@ static void intel_modeset_readout_hw_state(struct drm_device *dev)
if (crtc_state->base.active) {
dev_priv->active_crtcs |= 1 << crtc->pipe;
- if (IS_BROXTON(dev_priv) || IS_BROADWELL(dev_priv))
+ if (INTEL_GEN(dev_priv) >= 9 || IS_BROADWELL(dev_priv))
pixclk = ilk_pipe_pixel_rate(crtc_state);
else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
pixclk = crtc_state->base.adjusted_mode.crtc_clock;
diff --git a/drivers/gpu/drm/i915/intel_dpll_mgr.c b/drivers/gpu/drm/i915/intel_dpll_mgr.c
index c283ba4babe8..e99e306e8743 100644
--- a/drivers/gpu/drm/i915/intel_dpll_mgr.c
+++ b/drivers/gpu/drm/i915/intel_dpll_mgr.c
@@ -1194,6 +1194,7 @@ skl_get_dpll(struct intel_crtc *crtc, struct intel_crtc_state *crtc_state,
struct intel_shared_dpll *pll;
uint32_t ctrl1, cfgcr1, cfgcr2;
int clock = crtc_state->port_clock;
+ uint32_t vco = 8100;
/*
* See comment in intel_dpll_hw_state to understand why we always use 0
@@ -1236,17 +1237,17 @@ skl_get_dpll(struct intel_crtc *crtc, struct intel_crtc_state *crtc_state,
case 162000:
ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1620, 0);
break;
- /* TBD: For DP link rates 2.16 GHz and 4.32 GHz, VCO is 8640 which
- results in CDCLK change. Need to handle the change of CDCLK by
- disabling pipes and re-enabling them */
case 108000:
ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1080, 0);
+ vco = 8640;
break;
case 216000:
ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_2160, 0);
+ vco = 8640;
break;
}
+ to_intel_atomic_state(crtc_state->base.state)->cdclk_pll_vco = vco;
cfgcr1 = cfgcr2 = 0;
} else {
return NULL;
@@ -1639,7 +1640,7 @@ static void intel_ddi_pll_init(struct drm_device *dev)
int cdclk_freq;
cdclk_freq = dev_priv->display.get_display_clock_speed(dev);
- dev_priv->skl_boot_cdclk = cdclk_freq;
+ dev_priv->skl_vco_freq = skl_cdclk_get_vco(cdclk_freq);
if (skl_sanitize_cdclk(dev_priv))
DRM_DEBUG_KMS("Sanitized cdclk programmed by pre-os\n");
if (!(I915_READ(LCPLL1_CTL) & LCPLL_PLL_ENABLE))
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 0741b2d3aa65..8e8ce9884ce6 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -306,6 +306,9 @@ struct intel_atomic_state {
struct intel_flip_work *work[I915_MAX_PIPES];
+ /* SKL/KBL Only */
+ unsigned int cdclk_pll_vco;
+
struct intel_shared_dpll_config shared_dpll[I915_NUM_PLLS];
/*
@@ -1277,6 +1280,7 @@ void gen9_enable_dc5(struct drm_i915_private *dev_priv);
void skl_init_cdclk(struct drm_i915_private *dev_priv);
int skl_sanitize_cdclk(struct drm_i915_private *dev_priv);
void skl_uninit_cdclk(struct drm_i915_private *dev_priv);
+unsigned int skl_cdclk_get_vco(unsigned int freq);
void skl_enable_dc6(struct drm_i915_private *dev_priv);
void skl_disable_dc6(struct drm_i915_private *dev_priv);
void intel_dp_get_m_n(struct intel_crtc *crtc,
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.