diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_crt.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_crt.c | 231 |
1 files changed, 216 insertions, 15 deletions
diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c index 19148c3df63..6de97fc6602 100644 --- a/drivers/gpu/drm/i915/intel_crt.c +++ b/drivers/gpu/drm/i915/intel_crt.c @@ -37,9 +37,14 @@ static void intel_crt_dpms(struct drm_encoder *encoder, int mode) { struct drm_device *dev = encoder->dev; struct drm_i915_private *dev_priv = dev->dev_private; - u32 temp; + u32 temp, reg; - temp = I915_READ(ADPA); + if (IS_IGDNG(dev)) + reg = PCH_ADPA; + else + reg = ADPA; + + temp = I915_READ(reg); temp &= ~(ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE); temp |= ADPA_DAC_ENABLE; @@ -58,7 +63,7 @@ static void intel_crt_dpms(struct drm_encoder *encoder, int mode) break; } - I915_WRITE(ADPA, temp); + I915_WRITE(reg, temp); } static int intel_crt_mode_valid(struct drm_connector *connector, @@ -101,17 +106,23 @@ static void intel_crt_mode_set(struct drm_encoder *encoder, struct drm_i915_private *dev_priv = dev->dev_private; int dpll_md_reg; u32 adpa, dpll_md; + u32 adpa_reg; if (intel_crtc->pipe == 0) dpll_md_reg = DPLL_A_MD; else dpll_md_reg = DPLL_B_MD; + if (IS_IGDNG(dev)) + adpa_reg = PCH_ADPA; + else + adpa_reg = ADPA; + /* * Disable separate mode multiplier used when cloning SDVO to CRT * XXX this needs to be adjusted when we really are cloning */ - if (IS_I965G(dev)) { + if (IS_I965G(dev) && !IS_IGDNG(dev)) { dpll_md = I915_READ(dpll_md_reg); I915_WRITE(dpll_md_reg, dpll_md & ~DPLL_MD_UDI_MULTIPLIER_MASK); @@ -125,13 +136,53 @@ static void intel_crt_mode_set(struct drm_encoder *encoder, if (intel_crtc->pipe == 0) { adpa |= ADPA_PIPE_A_SELECT; - I915_WRITE(BCLRPAT_A, 0); + if (!IS_IGDNG(dev)) + I915_WRITE(BCLRPAT_A, 0); } else { adpa |= ADPA_PIPE_B_SELECT; - I915_WRITE(BCLRPAT_B, 0); + if (!IS_IGDNG(dev)) + I915_WRITE(BCLRPAT_B, 0); } - I915_WRITE(ADPA, adpa); + I915_WRITE(adpa_reg, adpa); +} + +static bool intel_igdng_crt_detect_hotplug(struct drm_connector *connector) +{ + struct drm_device *dev = connector->dev; + struct drm_i915_private *dev_priv = dev->dev_private; + u32 adpa, temp; + bool ret; + + temp = adpa = I915_READ(PCH_ADPA); + + adpa &= ~ADPA_CRT_HOTPLUG_MASK; + + adpa |= (ADPA_CRT_HOTPLUG_PERIOD_128 | + ADPA_CRT_HOTPLUG_WARMUP_10MS | + ADPA_CRT_HOTPLUG_SAMPLE_4S | + ADPA_CRT_HOTPLUG_VOLTAGE_50 | /* default */ + ADPA_CRT_HOTPLUG_VOLREF_325MV | + ADPA_CRT_HOTPLUG_ENABLE | + ADPA_CRT_HOTPLUG_FORCE_TRIGGER); + + DRM_DEBUG("pch crt adpa 0x%x", adpa); + I915_WRITE(PCH_ADPA, adpa); + + /* This might not be needed as not specified in spec...*/ + udelay(1000); + + /* Check the status to see if both blue and green are on now */ + adpa = I915_READ(PCH_ADPA); + if ((adpa & ADPA_CRT_HOTPLUG_MONITOR_MASK) == + ADPA_CRT_HOTPLUG_MONITOR_COLOR) + ret = true; + else + ret = false; + + /* restore origin register */ + I915_WRITE(PCH_ADPA, temp); + return ret; } /** @@ -148,6 +199,10 @@ static bool intel_crt_detect_hotplug(struct drm_connector *connector) struct drm_i915_private *dev_priv = dev->dev_private; u32 hotplug_en; int i, tries = 0; + + if (IS_IGDNG(dev)) + return intel_igdng_crt_detect_hotplug(connector); + /* * On 4 series desktop, CRT detect sequence need to be done twice * to get a reliable result. @@ -198,9 +253,142 @@ static bool intel_crt_detect_ddc(struct drm_connector *connector) return intel_ddc_probe(intel_output); } +static enum drm_connector_status +intel_crt_load_detect(struct drm_crtc *crtc, struct intel_output *intel_output) +{ + struct drm_encoder *encoder = &intel_output->enc; + struct drm_device *dev = encoder->dev; + struct drm_i915_private *dev_priv = dev->dev_private; + struct intel_crtc *intel_crtc = to_intel_crtc(crtc); + uint32_t pipe = intel_crtc->pipe; + uint32_t save_bclrpat; + uint32_t save_vtotal; + uint32_t vtotal, vactive; + uint32_t vsample; + uint32_t vblank, vblank_start, vblank_end; + uint32_t dsl; + uint32_t bclrpat_reg; + uint32_t vtotal_reg; + uint32_t vblank_reg; + uint32_t vsync_reg; + uint32_t pipeconf_reg; + uint32_t pipe_dsl_reg; + uint8_t st00; + enum drm_connector_status status; + + if (pipe == 0) { + bclrpat_reg = BCLRPAT_A; + vtotal_reg = VTOTAL_A; + vblank_reg = VBLANK_A; + vsync_reg = VSYNC_A; + pipeconf_reg = PIPEACONF; + pipe_dsl_reg = PIPEADSL; + } else { + bclrpat_reg = BCLRPAT_B; + vtotal_reg = VTOTAL_B; + vblank_reg = VBLANK_B; + vsync_reg = VSYNC_B; + pipeconf_reg = PIPEBCONF; + pipe_dsl_reg = PIPEBDSL; + } + + save_bclrpat = I915_READ(bclrpat_reg); + save_vtotal = I915_READ(vtotal_reg); + vblank = I915_READ(vblank_reg); + + vtotal = ((save_vtotal >> 16) & 0xfff) + 1; + vactive = (save_vtotal & 0x7ff) + 1; + + vblank_start = (vblank & 0xfff) + 1; + vblank_end = ((vblank >> 16) & 0xfff) + 1; + + /* Set the border color to purple. */ + I915_WRITE(bclrpat_reg, 0x500050); + + if (IS_I9XX(dev)) { + uint32_t pipeconf = I915_READ(pipeconf_reg); + I915_WRITE(pipeconf_reg, pipeconf | PIPECONF_FORCE_BORDER); + /* Wait for next Vblank to substitue + * border color for Color info */ + intel_wait_for_vblank(dev); + st00 = I915_READ8(VGA_MSR_WRITE); + status = ((st00 & (1 << 4)) != 0) ? + connector_status_connected : + connector_status_disconnected; + + I915_WRITE(pipeconf_reg, pipeconf); + } else { + bool restore_vblank = false; + int count, detect; + + /* + * If there isn't any border, add some. + * Yes, this will flicker + */ + if (vblank_start <= vactive && vblank_end >= vtotal) { + uint32_t vsync = I915_READ(vsync_reg); + uint32_t vsync_start = (vsync & 0xffff) + 1; + + vblank_start = vsync_start; + I915_WRITE(vblank_reg, + (vblank_start - 1) | + ((vblank_end - 1) << 16)); + restore_vblank = true; + } + /* sample in the vertical border, selecting the larger one */ + if (vblank_start - vactive >= vtotal - vblank_end) + vsample = (vblank_start + vactive) >> 1; + else + vsample = (vtotal + vblank_end) >> 1; + + /* + * Wait for the border to be displayed + */ + while (I915_READ(pipe_dsl_reg) >= vactive) + ; + while ((dsl = I915_READ(pipe_dsl_reg)) <= vsample) + ; + /* + * Watch ST00 for an entire scanline + */ + detect = 0; + count = 0; + do { + count++; + /* Read the ST00 VGA status register */ + st00 = I915_READ8(VGA_MSR_WRITE); + if (st00 & (1 << 4)) + detect++; + } while ((I915_READ(pipe_dsl_reg) == dsl)); + + /* restore vblank if necessary */ + if (restore_vblank) + I915_WRITE(vblank_reg, vblank); + /* + * If more than 3/4 of the scanline detected a monitor, + * then it is assumed to be present. This works even on i830, + * where there isn't any way to force the border color across + * the screen + */ + status = detect * 4 > count * 3 ? + connector_status_connected : + connector_status_disconnected; + } + + /* Restore previous settings */ + I915_WRITE(bclrpat_reg, save_bclrpat); + + return status; +} + static enum drm_connector_status intel_crt_detect(struct drm_connector *connector) { struct drm_device *dev = connector->dev; + struct intel_output *intel_output = to_intel_output(connector); + struct drm_encoder *encoder = &intel_output->enc; + struct drm_crtc *crtc; + int dpms_mode; + enum drm_connector_status status; if (IS_I9XX(dev) && !IS_I915G(dev) && !IS_I915GM(dev)) { if (intel_crt_detect_hotplug(connector)) @@ -212,8 +400,20 @@ static enum drm_connector_status intel_crt_detect(struct drm_connector *connecto if (intel_crt_detect_ddc(connector)) return connector_status_connected; - /* TODO use load detect */ - return connector_status_unknown; + /* for pre-945g platforms use load detect */ + if (encoder->crtc && encoder->crtc->enabled) { + status = intel_crt_load_detect(encoder->crtc, intel_output); + } else { + crtc = intel_get_load_detect_pipe(intel_output, + NULL, &dpms_mode); + if (crtc) { + status = intel_crt_load_detect(crtc, intel_output); + intel_release_load_detect_pipe(intel_output, dpms_mode); + } else + status = connector_status_unknown; + } + + return status; } static void intel_crt_destroy(struct drm_connector *connector) @@ -236,11 +436,6 @@ static int intel_crt_set_property(struct drm_connector *connector, struct drm_property *property, uint64_t value) { - struct drm_device *dev = connector->dev; - - if (property == dev->mode_config.dpms_property && connector->encoder) - intel_crt_dpms(connector->encoder, (uint32_t)(value & 0xf)); - return 0; } @@ -257,6 +452,7 @@ static const struct drm_encoder_helper_funcs intel_crt_helper_funcs = { }; static const struct drm_connector_funcs intel_crt_connector_funcs = { + .dpms = drm_helper_connector_dpms, .detect = intel_crt_detect, .fill_modes = drm_helper_probe_single_connector_modes, .destroy = intel_crt_destroy, @@ -282,6 +478,7 @@ void intel_crt_init(struct drm_device *dev) { struct drm_connector *connector; struct intel_output *intel_output; + u32 i2c_reg; intel_output = kzalloc(sizeof(struct intel_output), GFP_KERNEL); if (!intel_output) @@ -298,7 +495,11 @@ void intel_crt_init(struct drm_device *dev) &intel_output->enc); /* Set up the DDC bus. */ - intel_output->ddc_bus = intel_i2c_create(dev, GPIOA, "CRTDDC_A"); + if (IS_IGDNG(dev)) + i2c_reg = PCH_GPIOA; + else + i2c_reg = GPIOA; + intel_output->ddc_bus = intel_i2c_create(dev, i2c_reg, "CRTDDC_A"); if (!intel_output->ddc_bus) { dev_printk(KERN_ERR, &dev->pdev->dev, "DDC bus registration " "failed.\n"); |