/* For ILK+ */
static void assert_pch_pll(struct drm_i915_private *dev_priv,
- enum pipe pipe, bool state)
+ struct intel_crtc *intel_crtc, bool state)
{
int reg;
u32 val;
bool cur_state;
+ if (!intel_crtc->pch_pll) {
+ WARN(1, "asserting PCH PLL enabled with no PLL\n");
+ return;
+ }
+
if (HAS_PCH_CPT(dev_priv->dev)) {
u32 pch_dpll;
pch_dpll = I915_READ(PCH_DPLL_SEL);
/* Make sure the selected PLL is enabled to the transcoder */
- WARN(!((pch_dpll >> (4 * pipe)) & 8),
- "transcoder %d PLL not enabled\n", pipe);
-
- /* Convert the transcoder pipe number to a pll pipe number */
- pipe = (pch_dpll >> (4 * pipe)) & 1;
+ WARN(!((pch_dpll >> (4 * intel_crtc->pipe)) & 8),
+ "transcoder %d PLL not enabled\n", intel_crtc->pipe);
}
- reg = PCH_DPLL(pipe);
+ reg = intel_crtc->pch_pll->pll_reg;
val = I915_READ(reg);
cur_state = !!(val & DPLL_VCO_ENABLE);
WARN(cur_state != state,
* The PCH PLL needs to be enabled before the PCH transcoder, since it
* drives the transcoder clock.
*/
-static void intel_enable_pch_pll(struct drm_i915_private *dev_priv,
- enum pipe pipe)
+static void intel_enable_pch_pll(struct intel_crtc *intel_crtc)
{
+ struct drm_i915_private *dev_priv = intel_crtc->base.dev->dev_private;
+ struct intel_pch_pll *pll = intel_crtc->pch_pll;
int reg;
u32 val;
- if (pipe > 1)
- return;
-
/* PCH only available on ILK+ */
BUG_ON(dev_priv->info->gen < 5);
+ BUG_ON(pll == NULL);
+ BUG_ON(pll->refcount == 0);
+
+ DRM_DEBUG_KMS("enable PCH PLL %x (active %d, on? %d)for crtc %d\n",
+ pll->pll_reg, pll->active, pll->on,
+ intel_crtc->base.base.id);
/* PCH refclock must be enabled first */
assert_pch_refclk_enabled(dev_priv);
- reg = PCH_DPLL(pipe);
+ if (pll->active++ && pll->on) {
+ assert_pch_pll_enabled(dev_priv, intel_crtc);
+ return;
+ }
+
+ DRM_DEBUG_KMS("enabling PCH PLL %x\n", pll->pll_reg);
+
+ reg = pll->pll_reg;
val = I915_READ(reg);
val |= DPLL_VCO_ENABLE;
I915_WRITE(reg, val);
POSTING_READ(reg);
udelay(200);
+
+ pll->on = true;
}
-static void intel_disable_pch_pll(struct drm_i915_private *dev_priv,
- enum pipe pipe)
+static void intel_disable_pch_pll(struct intel_crtc *intel_crtc)
{
+ struct drm_i915_private *dev_priv = intel_crtc->base.dev->dev_private;
+ struct intel_pch_pll *pll = intel_crtc->pch_pll;
int reg;
- u32 val, pll_mask = TRANSC_DPLL_ENABLE | TRANSC_DPLLB_SEL,
- pll_sel = TRANSC_DPLL_ENABLE;
-
- if (pipe > 1)
- return;
+ u32 val;
/* PCH only available on ILK+ */
BUG_ON(dev_priv->info->gen < 5);
+ if (pll == NULL)
+ return;
- /* Make sure transcoder isn't still depending on us */
- assert_transcoder_disabled(dev_priv, pipe);
-
- if (pipe == 0)
- pll_sel |= TRANSC_DPLLA_SEL;
- else if (pipe == 1)
- pll_sel |= TRANSC_DPLLB_SEL;
+ BUG_ON(pll->refcount == 0);
+ DRM_DEBUG_KMS("disable PCH PLL %x (active %d, on? %d) for crtc %d\n",
+ pll->pll_reg, pll->active, pll->on,
+ intel_crtc->base.base.id);
- if ((I915_READ(PCH_DPLL_SEL) & pll_mask) == pll_sel)
+ BUG_ON(pll->active == 0);
+ if (--pll->active) {
+ assert_pch_pll_enabled(dev_priv, intel_crtc);
return;
+ }
+
+ DRM_DEBUG_KMS("disabling PCH PLL %x\n", pll->pll_reg);
+
+ /* Make sure transcoder isn't still depending on us */
+ assert_transcoder_disabled(dev_priv, intel_crtc->pipe);
- reg = PCH_DPLL(pipe);
+ reg = pll->pll_reg;
val = I915_READ(reg);
val &= ~DPLL_VCO_ENABLE;
I915_WRITE(reg, val);
POSTING_READ(reg);
udelay(200);
+
+ pll->on = false;
}
static void intel_enable_transcoder(struct drm_i915_private *dev_priv,
BUG_ON(dev_priv->info->gen < 5);
/* Make sure PCH DPLL is enabled */
- assert_pch_pll_enabled(dev_priv, pipe);
+ assert_pch_pll_enabled(dev_priv, to_intel_crtc(crtc));
/* FDI must be feeding us bits for PCH ports */
assert_fdi_tx_enabled(dev_priv, pipe);
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
- u32 reg, temp, transc_sel;
+ u32 reg, temp;
/* For PCH output, training FDI link */
dev_priv->display.fdi_link_train(crtc);
- intel_enable_pch_pll(dev_priv, pipe);
+ intel_enable_pch_pll(intel_crtc);
if (HAS_PCH_CPT(dev)) {
- transc_sel = intel_crtc->use_pll_a ? TRANSC_DPLLA_SEL :
- TRANSC_DPLLB_SEL;
+ u32 sel;
- /* Be sure PCH DPLL SEL is set */
temp = I915_READ(PCH_DPLL_SEL);
- if (pipe == 0) {
- temp &= ~(TRANSA_DPLLB_SEL);
- temp |= (TRANSA_DPLL_ENABLE | TRANSA_DPLLA_SEL);
- } else if (pipe == 1) {
- temp &= ~(TRANSB_DPLLB_SEL);
- temp |= (TRANSB_DPLL_ENABLE | TRANSB_DPLLB_SEL);
- } else if (pipe == 2) {
- temp &= ~(TRANSC_DPLLB_SEL);
- temp |= (TRANSC_DPLL_ENABLE | transc_sel);
+ switch (pipe) {
+ default:
+ case 0:
+ temp |= TRANSA_DPLL_ENABLE;
+ sel = TRANSA_DPLLB_SEL;
+ break;
+ case 1:
+ temp |= TRANSB_DPLL_ENABLE;
+ sel = TRANSB_DPLLB_SEL;
+ break;
+ case 2:
+ temp |= TRANSC_DPLL_ENABLE;
+ sel = TRANSC_DPLLB_SEL;
+ break;
}
+ if (intel_crtc->pch_pll->pll_reg == _PCH_DPLL_B)
+ temp |= sel;
+ else
+ temp &= ~sel;
I915_WRITE(PCH_DPLL_SEL, temp);
}
intel_enable_transcoder(dev_priv, pipe);
}
+static void intel_put_pch_pll(struct intel_crtc *intel_crtc)
+{
+ struct intel_pch_pll *pll = intel_crtc->pch_pll;
+
+ if (pll == NULL)
+ return;
+
+ if (pll->refcount == 0) {
+ WARN(1, "bad PCH PLL refcount\n");
+ return;
+ }
+
+ --pll->refcount;
+ intel_crtc->pch_pll = NULL;
+}
+
+static struct intel_pch_pll *intel_get_pch_pll(struct intel_crtc *intel_crtc, u32 dpll, u32 fp)
+{
+ struct drm_i915_private *dev_priv = intel_crtc->base.dev->dev_private;
+ struct intel_pch_pll *pll;
+ int i;
+
+ pll = intel_crtc->pch_pll;
+ if (pll) {
+ DRM_DEBUG_KMS("CRTC:%d reusing existing PCH PLL %x\n",
+ intel_crtc->base.base.id, pll->pll_reg);
+ goto prepare;
+ }
+
+ for (i = 0; i < dev_priv->num_pch_pll; i++) {
+ pll = &dev_priv->pch_plls[i];
+
+ /* Only want to check enabled timings first */
+ if (pll->refcount == 0)
+ continue;
+
+ if (dpll == (I915_READ(pll->pll_reg) & 0x7fffffff) &&
+ fp == I915_READ(pll->fp0_reg)) {
+ DRM_DEBUG_KMS("CRTC:%d sharing existing PCH PLL %x (refcount %d, ative %d)\n",
+ intel_crtc->base.base.id,
+ pll->pll_reg, pll->refcount, pll->active);
+
+ goto found;
+ }
+ }
+
+ /* Ok no matching timings, maybe there's a free one? */
+ for (i = 0; i < dev_priv->num_pch_pll; i++) {
+ pll = &dev_priv->pch_plls[i];
+ if (pll->refcount == 0) {
+ DRM_DEBUG_KMS("CRTC:%d allocated PCH PLL %x\n",
+ intel_crtc->base.base.id, pll->pll_reg);
+ goto found;
+ }
+ }
+
+ return NULL;
+
+found:
+ intel_crtc->pch_pll = pll;
+ pll->refcount++;
+ DRM_DEBUG_DRIVER("using pll %d for pipe %d\n", i, intel_crtc->pipe);
+prepare: /* separate function? */
+ DRM_DEBUG_DRIVER("switching PLL %x off\n", pll->pll_reg);
+ I915_WRITE(pll->fp0_reg, fp);
+ I915_WRITE(pll->pll_reg, dpll & ~DPLL_VCO_ENABLE);
+
+ POSTING_READ(pll->pll_reg);
+ udelay(150);
+ pll->on = false;
+ return pll;
+}
+
void intel_cpt_verify_modeset(struct drm_device *dev, int pipe)
{
struct drm_i915_private *dev_priv = dev->dev_private;
}
/* disable PCH DPLL */
- if (!intel_crtc->no_pll)
- intel_disable_pch_pll(dev_priv, pipe);
+ intel_disable_pch_pll(intel_crtc);
/* Switch from PCDclk to Rawclk */
reg = FDI_RX_CTL(pipe);
}
}
+static void ironlake_crtc_off(struct drm_crtc *crtc)
+{
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ intel_put_pch_pll(intel_crtc);
+}
+
static void intel_crtc_dpms_overlay(struct intel_crtc *intel_crtc, bool enable)
{
if (!enable && intel_crtc->overlay) {
}
}
+static void i9xx_crtc_off(struct drm_crtc *crtc)
+{
+}
+
/**
* Sets the power management mode of the pipe and plane.
*/
{
struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF);
+ dev_priv->display.off(crtc);
+
assert_plane_disabled(dev->dev_private, to_intel_crtc(crtc)->plane);
assert_pipe_disabled(dev->dev_private, to_intel_crtc(crtc)->pipe);
DRM_DEBUG_KMS("Mode for pipe %d:\n", pipe);
drm_mode_debug_printmodeline(mode);
- /* PCH eDP needs FDI, but CPU eDP does not */
- if (!intel_crtc->no_pll) {
- if (!is_cpu_edp) {
- I915_WRITE(PCH_FP0(pipe), fp);
- I915_WRITE(PCH_DPLL(pipe), dpll & ~DPLL_VCO_ENABLE);
+ /* CPU eDP is the only output that doesn't need a PCH PLL of its own */
+ if (!is_cpu_edp) {
+ struct intel_pch_pll *pll;
- POSTING_READ(PCH_DPLL(pipe));
- udelay(150);
- }
- } else {
- if (dpll == (I915_READ(PCH_DPLL(0)) & 0x7fffffff) &&
- fp == I915_READ(PCH_FP0(0))) {
- intel_crtc->use_pll_a = true;
- DRM_DEBUG_KMS("using pipe a dpll\n");
- } else if (dpll == (I915_READ(PCH_DPLL(1)) & 0x7fffffff) &&
- fp == I915_READ(PCH_FP0(1))) {
- intel_crtc->use_pll_a = false;
- DRM_DEBUG_KMS("using pipe b dpll\n");
- } else {
- DRM_DEBUG_KMS("no matching PLL configuration for pipe 2\n");
+ pll = intel_get_pch_pll(intel_crtc, dpll, fp);
+ if (pll == NULL) {
+ DRM_DEBUG_DRIVER("failed to find PLL for pipe %d\n",
+ pipe);
return -EINVAL;
}
- }
+ } else
+ intel_put_pch_pll(intel_crtc);
/* The LVDS pin pair needs to be on before the DPLLs are enabled.
* This is an exception to the general rule that mode_set doesn't turn
I915_WRITE(TRANSDPLINK_N1(pipe), 0);
}
- if (!intel_crtc->no_pll && (!edp_encoder || is_pch_edp)) {
- I915_WRITE(PCH_DPLL(pipe), dpll);
+ if (intel_crtc->pch_pll) {
+ I915_WRITE(intel_crtc->pch_pll->pll_reg, dpll);
/* Wait for the clocks to stabilize. */
- POSTING_READ(PCH_DPLL(pipe));
+ POSTING_READ(intel_crtc->pch_pll->pll_reg);
udelay(150);
/* The pixel multiplier can only be updated once the
*
* So write it again.
*/
- I915_WRITE(PCH_DPLL(pipe), dpll);
+ I915_WRITE(intel_crtc->pch_pll->pll_reg, dpll);
}
intel_crtc->lowfreq_avail = false;
- if (!intel_crtc->no_pll) {
+ if (intel_crtc->pch_pll) {
if (is_lvds && has_reduced_clock && i915_powersave) {
- I915_WRITE(PCH_FP1(pipe), fp2);
+ I915_WRITE(intel_crtc->pch_pll->fp1_reg, fp2);
intel_crtc->lowfreq_avail = true;
if (HAS_PIPE_CXSR(dev)) {
DRM_DEBUG_KMS("enabling CxSR downclocking\n");
pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
}
} else {
- I915_WRITE(PCH_FP1(pipe), fp);
+ I915_WRITE(intel_crtc->pch_pll->fp1_reg, fp);
if (HAS_PIPE_CXSR(dev)) {
DRM_DEBUG_KMS("disabling CxSR downclocking\n");
pipeconf &= ~PIPECONF_CXSR_DOWNCLOCK;
.page_flip = intel_crtc_page_flip,
};
+static void intel_pch_pll_init(struct drm_device *dev)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ int i;
+
+ if (dev_priv->num_pch_pll == 0) {
+ DRM_DEBUG_KMS("No PCH PLLs on this hardware, skipping initialisation\n");
+ return;
+ }
+
+ for (i = 0; i < dev_priv->num_pch_pll; i++) {
+ dev_priv->pch_plls[i].pll_reg = _PCH_DPLL(i);
+ dev_priv->pch_plls[i].fp0_reg = _PCH_FP0(i);
+ dev_priv->pch_plls[i].fp1_reg = _PCH_FP1(i);
+ }
+}
+
static void intel_crtc_init(struct drm_device *dev, int pipe)
{
drm_i915_private_t *dev_priv = dev->dev_private;
intel_crtc->bpp = 24; /* default for pre-Ironlake */
if (HAS_PCH_SPLIT(dev)) {
- if (pipe == 2 && IS_IVYBRIDGE(dev))
- intel_crtc->no_pll = true;
intel_helper_funcs.prepare = ironlake_crtc_prepare;
intel_helper_funcs.commit = ironlake_crtc_commit;
} else {
if (HAS_PCH_SPLIT(dev)) {
dev_priv->display.dpms = ironlake_crtc_dpms;
dev_priv->display.crtc_mode_set = ironlake_crtc_mode_set;
+ dev_priv->display.off = ironlake_crtc_off;
dev_priv->display.update_plane = ironlake_update_plane;
} else {
dev_priv->display.dpms = i9xx_crtc_dpms;
dev_priv->display.crtc_mode_set = i9xx_crtc_mode_set;
+ dev_priv->display.off = i9xx_crtc_off;
dev_priv->display.update_plane = i9xx_update_plane;
}
DRM_DEBUG_KMS("plane %d init failed: %d\n", i, ret);
}
+ intel_pch_pll_init(dev);
+
/* Just disable it once at startup */
i915_disable_vga(dev);
intel_setup_outputs(dev);
projects / openwrt / staging / blogic.git / commitdiff