int pipe = intel_crtc->pipe;
u32 reg, temp, i;
- /* Configure CPU PLL, wait for warmup */
- I915_WRITE(SPLL_CTL,
- SPLL_PLL_ENABLE |
- SPLL_PLL_FREQ_1350MHz |
- SPLL_PLL_SCC);
-
- /* Use SPLL to drive the output when in FDI mode */
- I915_WRITE(PORT_CLK_SEL(PORT_E),
- PORT_CLK_SEL_SPLL);
-
- udelay(20);
-
/* Start the training iterating through available voltages and emphasis */
for (i=0; i < ARRAY_SIZE(hsw_ddi_buf_ctl_values); i++) {
/* Configure DP_TP_CTL with auto-training */
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
- struct drm_device *dev = encoder->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_crtc *crtc = encoder->crtc;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
int port = intel_hdmi->ddi_port;
int pipe = intel_crtc->pipe;
- int p, n2, r2;
- u32 i;
/* On Haswell, we need to enable the clocks and prepare DDI function to
* work in HDMI mode for this pipe.
*/
DRM_DEBUG_KMS("Preparing HDMI DDI mode for Haswell on port %c, pipe %c\n", port_name(port), pipe_name(pipe));
- for (i = 0; i < ARRAY_SIZE(wrpll_tmds_clock_table); i++)
- if (crtc->mode.clock <= wrpll_tmds_clock_table[i].clock)
- break;
-
- if (i == ARRAY_SIZE(wrpll_tmds_clock_table))
- i--;
-
- p = wrpll_tmds_clock_table[i].p;
- n2 = wrpll_tmds_clock_table[i].n2;
- r2 = wrpll_tmds_clock_table[i].r2;
-
- if (wrpll_tmds_clock_table[i].clock != crtc->mode.clock)
- DRM_INFO("WR PLL: using settings for %dKHz on %dKHz mode\n",
- wrpll_tmds_clock_table[i].clock, crtc->mode.clock);
-
- DRM_DEBUG_KMS("WR PLL: %dKHz refresh rate with p=%d, n2=%d r2=%d\n",
- crtc->mode.clock, p, n2, r2);
-
- /* Configure WR PLL 1, program the correct divider values for
- * the desired frequency and wait for warmup */
- I915_WRITE(WRPLL_CTL1,
- WRPLL_PLL_ENABLE |
- WRPLL_PLL_SELECT_LCPLL_2700 |
- WRPLL_DIVIDER_REFERENCE(r2) |
- WRPLL_DIVIDER_FEEDBACK(n2) |
- WRPLL_DIVIDER_POST(p));
-
- udelay(20);
-
- /* Use WRPLL1 clock to drive the output to the port, and tell the pipe to use
- * this port for connection.
- */
- I915_WRITE(PORT_CLK_SEL(port),
- PORT_CLK_SEL_WRPLL1);
-
- udelay(20);
-
if (intel_hdmi->has_audio) {
/* Proper support for digital audio needs a new logic and a new set
* of registers, so we leave it for future patch bombing.
return ret;
}
+void intel_ddi_put_crtc_pll(struct drm_crtc *crtc)
+{
+ struct drm_i915_private *dev_priv = crtc->dev->dev_private;
+ struct intel_ddi_plls *plls = &dev_priv->ddi_plls;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ uint32_t val;
+
+ switch (intel_crtc->ddi_pll_sel) {
+ case PORT_CLK_SEL_SPLL:
+ plls->spll_refcount--;
+ if (plls->spll_refcount == 0) {
+ DRM_DEBUG_KMS("Disabling SPLL\n");
+ val = I915_READ(SPLL_CTL);
+ WARN_ON(!(val & SPLL_PLL_ENABLE));
+ I915_WRITE(SPLL_CTL, val & ~SPLL_PLL_ENABLE);
+ POSTING_READ(SPLL_CTL);
+ }
+ break;
+ case PORT_CLK_SEL_WRPLL1:
+ plls->wrpll1_refcount--;
+ if (plls->wrpll1_refcount == 0) {
+ DRM_DEBUG_KMS("Disabling WRPLL 1\n");
+ val = I915_READ(WRPLL_CTL1);
+ WARN_ON(!(val & WRPLL_PLL_ENABLE));
+ I915_WRITE(WRPLL_CTL1, val & ~WRPLL_PLL_ENABLE);
+ POSTING_READ(WRPLL_CTL1);
+ }
+ break;
+ case PORT_CLK_SEL_WRPLL2:
+ plls->wrpll2_refcount--;
+ if (plls->wrpll2_refcount == 0) {
+ DRM_DEBUG_KMS("Disabling WRPLL 2\n");
+ val = I915_READ(WRPLL_CTL2);
+ WARN_ON(!(val & WRPLL_PLL_ENABLE));
+ I915_WRITE(WRPLL_CTL2, val & ~WRPLL_PLL_ENABLE);
+ POSTING_READ(WRPLL_CTL2);
+ }
+ break;
+ }
+
+ WARN(plls->spll_refcount < 0, "Invalid SPLL refcount\n");
+ WARN(plls->wrpll1_refcount < 0, "Invalid WRPLL1 refcount\n");
+ WARN(plls->wrpll2_refcount < 0, "Invalid WRPLL2 refcount\n");
+
+ intel_crtc->ddi_pll_sel = PORT_CLK_SEL_NONE;
+}
+
+static void intel_ddi_calculate_wrpll(int clock, int *p, int *n2, int *r2)
+{
+ u32 i;
+
+ for (i = 0; i < ARRAY_SIZE(wrpll_tmds_clock_table); i++)
+ if (clock <= wrpll_tmds_clock_table[i].clock)
+ break;
+
+ if (i == ARRAY_SIZE(wrpll_tmds_clock_table))
+ i--;
+
+ *p = wrpll_tmds_clock_table[i].p;
+ *n2 = wrpll_tmds_clock_table[i].n2;
+ *r2 = wrpll_tmds_clock_table[i].r2;
+
+ if (wrpll_tmds_clock_table[i].clock != clock)
+ DRM_INFO("WRPLL: using settings for %dKHz on %dKHz mode\n",
+ wrpll_tmds_clock_table[i].clock, clock);
+
+ DRM_DEBUG_KMS("WRPLL: %dKHz refresh rate with p=%d, n2=%d r2=%d\n",
+ clock, *p, *n2, *r2);
+}
+
+bool intel_ddi_pll_mode_set(struct drm_crtc *crtc, int clock)
+{
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc);
+ struct drm_i915_private *dev_priv = crtc->dev->dev_private;
+ struct intel_ddi_plls *plls = &dev_priv->ddi_plls;
+ int type = intel_encoder->type;
+ enum pipe pipe = intel_crtc->pipe;
+ uint32_t reg, val;
+
+ /* TODO: reuse PLLs when possible (compare values) */
+
+ intel_ddi_put_crtc_pll(crtc);
+
+ if (type == INTEL_OUTPUT_HDMI) {
+ int p, n2, r2;
+
+ if (plls->wrpll1_refcount == 0) {
+ DRM_DEBUG_KMS("Using WRPLL 1 on pipe %c\n",
+ pipe_name(pipe));
+ plls->wrpll1_refcount++;
+ reg = WRPLL_CTL1;
+ intel_crtc->ddi_pll_sel = PORT_CLK_SEL_WRPLL1;
+ } else if (plls->wrpll2_refcount == 0) {
+ DRM_DEBUG_KMS("Using WRPLL 2 on pipe %c\n",
+ pipe_name(pipe));
+ plls->wrpll2_refcount++;
+ reg = WRPLL_CTL2;
+ intel_crtc->ddi_pll_sel = PORT_CLK_SEL_WRPLL2;
+ } else {
+ DRM_ERROR("No WRPLLs available!\n");
+ return false;
+ }
+
+ WARN(I915_READ(reg) & WRPLL_PLL_ENABLE,
+ "WRPLL already enabled\n");
+
+ intel_ddi_calculate_wrpll(clock, &p, &n2, &r2);
+
+ val = WRPLL_PLL_ENABLE | WRPLL_PLL_SELECT_LCPLL_2700 |
+ WRPLL_DIVIDER_REFERENCE(r2) | WRPLL_DIVIDER_FEEDBACK(n2) |
+ WRPLL_DIVIDER_POST(p);
+
+ } else if (type == INTEL_OUTPUT_ANALOG) {
+ if (plls->spll_refcount == 0) {
+ DRM_DEBUG_KMS("Using SPLL on pipe %c\n",
+ pipe_name(pipe));
+ plls->spll_refcount++;
+ reg = SPLL_CTL;
+ intel_crtc->ddi_pll_sel = PORT_CLK_SEL_SPLL;
+ }
+
+ WARN(I915_READ(reg) & SPLL_PLL_ENABLE,
+ "SPLL already enabled\n");
+
+ val = SPLL_PLL_ENABLE | SPLL_PLL_FREQ_1350MHz | SPLL_PLL_SCC;
+
+ } else {
+ WARN(1, "Invalid DDI encoder type %d\n", type);
+ return false;
+ }
+
+ I915_WRITE(reg, val);
+ udelay(20);
+
+ return true;
+}
+
void intel_ddi_enable_pipe_func(struct drm_crtc *crtc)
{
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
return true;
}
+static uint32_t intel_ddi_get_crtc_pll(struct drm_i915_private *dev_priv,
+ enum pipe pipe)
+{
+ uint32_t temp, ret;
+ enum port port;
+ int i;
+
+ temp = I915_READ(DDI_FUNC_CTL(pipe));
+ temp &= PIPE_DDI_PORT_MASK;
+ for (i = PORT_A; i <= PORT_E; i++)
+ if (temp == PIPE_DDI_SELECT_PORT(i))
+ port = i;
+
+ ret = I915_READ(PORT_CLK_SEL(port));
+
+ DRM_DEBUG_KMS("Pipe %c connected to port %c using clock 0x%08x\n",
+ pipe_name(pipe), port_name(port), ret);
+
+ return ret;
+}
+
+void intel_ddi_setup_hw_pll_state(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ enum pipe pipe;
+ struct intel_crtc *intel_crtc;
+
+ for_each_pipe(pipe) {
+ intel_crtc =
+ to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
+
+ if (!intel_crtc->active)
+ continue;
+
+ intel_crtc->ddi_pll_sel = intel_ddi_get_crtc_pll(dev_priv,
+ pipe);
+
+ switch (intel_crtc->ddi_pll_sel) {
+ case PORT_CLK_SEL_SPLL:
+ dev_priv->ddi_plls.spll_refcount++;
+ break;
+ case PORT_CLK_SEL_WRPLL1:
+ dev_priv->ddi_plls.wrpll1_refcount++;
+ break;
+ case PORT_CLK_SEL_WRPLL2:
+ dev_priv->ddi_plls.wrpll2_refcount++;
+ break;
+ }
+ }
+}
+
void intel_ddi_enable_pipe_clock(struct intel_crtc *intel_crtc)
{
struct drm_crtc *crtc = &intel_crtc->base;
I915_WRITE(PIPE_CLK_SEL(intel_crtc->pipe), PIPE_CLK_SEL_DISABLED);
}
+void intel_ddi_pre_enable(struct intel_encoder *intel_encoder)
+{
+ struct drm_crtc *crtc = intel_encoder->base.crtc;
+ struct drm_i915_private *dev_priv = crtc->dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ enum port port = intel_ddi_get_encoder_port(intel_encoder);
+
+ WARN_ON(intel_crtc->ddi_pll_sel == PORT_CLK_SEL_NONE);
+
+ I915_WRITE(PORT_CLK_SEL(port), intel_crtc->ddi_pll_sel);
+}
+
+void intel_ddi_post_disable(struct intel_encoder *intel_encoder)
+{
+ struct drm_encoder *encoder = &intel_encoder->base;
+ struct drm_i915_private *dev_priv = encoder->dev->dev_private;
+ enum port port = intel_ddi_get_encoder_port(intel_encoder);
+
+ I915_WRITE(PORT_CLK_SEL(port), PORT_CLK_SEL_NONE);
+}
+
void intel_enable_ddi(struct intel_encoder *encoder)
{
struct drm_device *dev = encoder->base.dev;
projects / users / hch / configfs.git / commitdiff