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path: root/drivers/gpu/drm/i915/intel_ddi.c
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Diffstat (limited to 'drivers/gpu/drm/i915/intel_ddi.c')
-rw-r--r--drivers/gpu/drm/i915/intel_ddi.c144
1 files changed, 100 insertions, 44 deletions
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 933c74859172..bfe375466a0e 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -250,7 +250,7 @@ void intel_ddi_init(struct drm_device *dev, enum port port)
case PORT_B:
case PORT_C:
case PORT_D:
- intel_hdmi_init(dev, DDI_BUF_CTL(port));
+ intel_hdmi_init(dev, DDI_BUF_CTL(port), port);
break;
default:
DRM_DEBUG_DRIVER("No handlers defined for port %d, skipping DDI initialization\n",
@@ -267,7 +267,8 @@ struct wrpll_tmds_clock {
u16 r2; /* Reference divider */
};
-/* Table of matching values for WRPLL clocks programming for each frequency */
+/* Table of matching values for WRPLL clocks programming for each frequency.
+ * The code assumes this table is sorted. */
static const struct wrpll_tmds_clock wrpll_tmds_clock_table[] = {
{19750, 38, 25, 18},
{20000, 48, 32, 18},
@@ -277,7 +278,6 @@ static const struct wrpll_tmds_clock wrpll_tmds_clock_table[] = {
{23000, 36, 23, 15},
{23500, 40, 40, 23},
{23750, 26, 16, 14},
- {23750, 26, 16, 14},
{24000, 36, 24, 15},
{25000, 36, 25, 15},
{25175, 26, 40, 33},
@@ -437,7 +437,6 @@ static const struct wrpll_tmds_clock wrpll_tmds_clock_table[] = {
{108000, 8, 24, 15},
{108108, 8, 173, 108},
{109000, 6, 23, 19},
- {109000, 6, 23, 19},
{110000, 6, 22, 18},
{110013, 6, 22, 18},
{110250, 8, 49, 30},
@@ -614,7 +613,6 @@ static const struct wrpll_tmds_clock wrpll_tmds_clock_table[] = {
{218250, 4, 42, 26},
{218750, 4, 34, 21},
{219000, 4, 47, 29},
- {219000, 4, 47, 29},
{220000, 4, 44, 27},
{220640, 4, 49, 30},
{220750, 4, 36, 22},
@@ -658,7 +656,7 @@ void intel_ddi_mode_set(struct drm_encoder *encoder,
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, valid=0;
+ int p, n2, r2;
u32 temp, i;
/* On Haswell, we need to enable the clocks and prepare DDI function to
@@ -666,26 +664,23 @@ void intel_ddi_mode_set(struct drm_encoder *encoder,
*/
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) {
- p = wrpll_tmds_clock_table[i].p;
- n2 = wrpll_tmds_clock_table[i].n2;
- r2 = wrpll_tmds_clock_table[i].r2;
+ for (i = 0; i < ARRAY_SIZE(wrpll_tmds_clock_table); i++)
+ if (crtc->mode.clock <= wrpll_tmds_clock_table[i].clock)
+ break;
- DRM_DEBUG_KMS("WR PLL clock: found settings for %dKHz refresh rate: p=%d, n2=%d, r2=%d\n",
- crtc->mode.clock,
- p, n2, r2);
+ if (i == ARRAY_SIZE(wrpll_tmds_clock_table))
+ i--;
- valid = 1;
- break;
- }
- }
+ p = wrpll_tmds_clock_table[i].p;
+ n2 = wrpll_tmds_clock_table[i].n2;
+ r2 = wrpll_tmds_clock_table[i].r2;
- if (!valid) {
- DRM_ERROR("Unable to find WR PLL clock settings for %dKHz refresh rate\n",
- crtc->mode.clock);
- return;
- }
+ 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);
/* Enable LCPLL if disabled */
temp = I915_READ(LCPLL_CTL);
@@ -718,46 +713,107 @@ void intel_ddi_mode_set(struct drm_encoder *encoder,
/* Proper support for digital audio needs a new logic and a new set
* of registers, so we leave it for future patch bombing.
*/
- DRM_DEBUG_DRIVER("HDMI audio on pipe %c not yet supported on DDI\n",
+ DRM_DEBUG_DRIVER("HDMI audio on pipe %c on DDI\n",
pipe_name(intel_crtc->pipe));
+
+ /* write eld */
+ DRM_DEBUG_DRIVER("HDMI audio: write eld information\n");
+ intel_write_eld(encoder, adjusted_mode);
}
/* Enable PIPE_DDI_FUNC_CTL for the pipe to work in HDMI mode */
- temp = I915_READ(DDI_FUNC_CTL(pipe));
- temp &= ~PIPE_DDI_PORT_MASK;
- temp &= ~PIPE_DDI_BPC_12;
- temp |= PIPE_DDI_SELECT_PORT(port) |
- PIPE_DDI_MODE_SELECT_HDMI |
- ((intel_crtc->bpp > 24) ?
- PIPE_DDI_BPC_12 :
- PIPE_DDI_BPC_8) |
- PIPE_DDI_FUNC_ENABLE;
+ temp = PIPE_DDI_FUNC_ENABLE | PIPE_DDI_SELECT_PORT(port);
+
+ switch (intel_crtc->bpp) {
+ case 18:
+ temp |= PIPE_DDI_BPC_6;
+ break;
+ case 24:
+ temp |= PIPE_DDI_BPC_8;
+ break;
+ case 30:
+ temp |= PIPE_DDI_BPC_10;
+ break;
+ case 36:
+ temp |= PIPE_DDI_BPC_12;
+ break;
+ default:
+ WARN(1, "%d bpp unsupported by pipe DDI function\n",
+ intel_crtc->bpp);
+ }
+
+ if (intel_hdmi->has_hdmi_sink)
+ temp |= PIPE_DDI_MODE_SELECT_HDMI;
+ else
+ temp |= PIPE_DDI_MODE_SELECT_DVI;
+
+ if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
+ temp |= PIPE_DDI_PVSYNC;
+ if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
+ temp |= PIPE_DDI_PHSYNC;
I915_WRITE(DDI_FUNC_CTL(pipe), temp);
intel_hdmi->set_infoframes(encoder, adjusted_mode);
}
-void intel_ddi_dpms(struct drm_encoder *encoder, int mode)
+bool intel_ddi_get_hw_state(struct intel_encoder *encoder,
+ enum pipe *pipe)
{
- struct drm_device *dev = encoder->dev;
+ struct drm_device *dev = encoder->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
+ struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
+ u32 tmp;
+ int i;
+
+ tmp = I915_READ(DDI_BUF_CTL(intel_hdmi->ddi_port));
+
+ if (!(tmp & DDI_BUF_CTL_ENABLE))
+ return false;
+
+ for_each_pipe(i) {
+ tmp = I915_READ(DDI_FUNC_CTL(i));
+
+ if ((tmp & PIPE_DDI_PORT_MASK)
+ == PIPE_DDI_SELECT_PORT(intel_hdmi->ddi_port)) {
+ *pipe = i;
+ return true;
+ }
+ }
+
+ DRM_DEBUG_KMS("No pipe for ddi port %i found\n", intel_hdmi->ddi_port);
+
+ return true;
+}
+
+void intel_enable_ddi(struct intel_encoder *encoder)
+{
+ struct drm_device *dev = encoder->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
int port = intel_hdmi->ddi_port;
u32 temp;
temp = I915_READ(DDI_BUF_CTL(port));
-
- if (mode != DRM_MODE_DPMS_ON) {
- temp &= ~DDI_BUF_CTL_ENABLE;
- } else {
- temp |= DDI_BUF_CTL_ENABLE;
- }
+ temp |= DDI_BUF_CTL_ENABLE;
/* Enable DDI_BUF_CTL. In HDMI/DVI mode, the port width,
* and swing/emphasis values are ignored so nothing special needs
* to be done besides enabling the port.
*/
- I915_WRITE(DDI_BUF_CTL(port),
- temp);
+ I915_WRITE(DDI_BUF_CTL(port), temp);
+}
+
+void intel_disable_ddi(struct intel_encoder *encoder)
+{
+ struct drm_device *dev = encoder->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
+ int port = intel_hdmi->ddi_port;
+ u32 temp;
+
+ temp = I915_READ(DDI_BUF_CTL(port));
+ temp &= ~DDI_BUF_CTL_ENABLE;
+
+ I915_WRITE(DDI_BUF_CTL(port), temp);
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.