/* * Copyright 2006 Dave Airlie <airlied@linux.ie> * Copyright © 2006-2007 Intel Corporation * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. * * Authors: * Eric Anholt <eric@anholt.net> */ #include <linux/i2c.h> #include <linux/slab.h> #include "drmP.h" #include "drm.h" #include "drm_crtc.h" #include "intel_drv.h" #include "i915_drm.h" #include "i915_drv.h" #include "dvo.h" #define SIL164_ADDR 0x38 #define CH7xxx_ADDR 0x76 #define TFP410_ADDR 0x38 static const struct intel_dvo_device intel_dvo_devices[] = { { .type = INTEL_DVO_CHIP_TMDS, .name = "sil164", .dvo_reg = DVOC, .slave_addr = SIL164_ADDR, .dev_ops = &sil164_ops, }, { .type = INTEL_DVO_CHIP_TMDS, .name = "ch7xxx", .dvo_reg = DVOC, .slave_addr = CH7xxx_ADDR, .dev_ops = &ch7xxx_ops, }, { .type = INTEL_DVO_CHIP_LVDS, .name = "ivch", .dvo_reg = DVOA, .slave_addr = 0x02, /* Might also be 0x44, 0x84, 0xc4 */ .dev_ops = &ivch_ops, }, { .type = INTEL_DVO_CHIP_TMDS, .name = "tfp410", .dvo_reg = DVOC, .slave_addr = TFP410_ADDR, .dev_ops = &tfp410_ops, }, { .type = INTEL_DVO_CHIP_LVDS, .name = "ch7017", .dvo_reg = DVOC, .slave_addr = 0x75, .gpio = GMBUS_PORT_DPB, .dev_ops = &ch7017_ops, } }; struct intel_dvo { struct intel_encoder base; struct intel_dvo_device dev; struct drm_display_mode *panel_fixed_mode; bool panel_wants_dither; }; static struct intel_dvo *enc_to_intel_dvo(struct drm_encoder *encoder) { return container_of(encoder, struct intel_dvo, base.base); } static struct intel_dvo *intel_attached_dvo(struct drm_connector *connector) { return container_of(intel_attached_encoder(connector), struct intel_dvo, base); } static void intel_dvo_dpms(struct drm_encoder *encoder, int mode) { struct drm_i915_private *dev_priv = encoder->dev->dev_private; struct intel_dvo *intel_dvo = enc_to_intel_dvo(encoder); u32 dvo_reg = intel_dvo->dev.dvo_reg; u32 temp = I915_READ(dvo_reg); if (mode == DRM_MODE_DPMS_ON) { I915_WRITE(dvo_reg, temp | DVO_ENABLE); I915_READ(dvo_reg); intel_dvo->dev.dev_ops->dpms(&intel_dvo->dev, mode); } else { intel_dvo->dev.dev_ops->dpms(&intel_dvo->dev, mode); I915_WRITE(dvo_reg, temp & ~DVO_ENABLE); I915_READ(dvo_reg); } } static int intel_dvo_mode_valid(struct drm_connector *connector, struct drm_display_mode *mode) { struct intel_dvo *intel_dvo = intel_attached_dvo(connector); if (mode->flags & DRM_MODE_FLAG_DBLSCAN) return MODE_NO_DBLESCAN; /* XXX: Validate clock range */ if (intel_dvo->panel_fixed_mode) { if (mode->hdisplay > intel_dvo->panel_fixed_mode->hdisplay) return MODE_PANEL; if (mode->vdisplay > intel_dvo->panel_fixed_mode->vdisplay) return MODE_PANEL; } return intel_dvo->dev.dev_ops->mode_valid(&intel_dvo->dev, mode); } static bool intel_dvo_mode_fixup(struct drm_encoder *encoder, const struct drm_display_mode *mode, struct drm_display_mode *adjusted_mode) { struct intel_dvo *intel_dvo = enc_to_intel_dvo(encoder); /* If we have timings from the BIOS for the panel, put them in * to the adjusted mode. The CRTC will be set up for this mode, * with the panel scaling set up to source from the H/VDisplay * of the original mode. */ if (intel_dvo->panel_fixed_mode != NULL) { #define C(x) adjusted_mode->x = intel_dvo->panel_fixed_mode->x C(hdisplay); C(hsync_start); C(hsync_end); C(htotal); C(vdisplay); C(vsync_start); C(vsync_end); C(vtotal); C(clock); #undef C } if (intel_dvo->dev.dev_ops->mode_fixup) return intel_dvo->dev.dev_ops->mode_fixup(&intel_dvo->dev, mode, adjusted_mode); return true; } static void intel_dvo_mode_set(struct drm_encoder *encoder, 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 intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc); struct intel_dvo *intel_dvo = enc_to_intel_dvo(encoder); int pipe = intel_crtc->pipe; u32 dvo_val; u32 dvo_reg = intel_dvo->dev.dvo_reg, dvo_srcdim_reg; int dpll_reg = DPLL(pipe); switch (dvo_reg) { case DVOA: default: dvo_srcdim_reg = DVOA_SRCDIM; break; case DVOB: dvo_srcdim_reg = DVOB_SRCDIM; break; case DVOC: dvo_srcdim_reg = DVOC_SRCDIM; break; } intel_dvo->dev.dev_ops->mode_set(&intel_dvo->dev, mode, adjusted_mode); /* Save the data order, since I don't know what it should be set to. */ dvo_val = I915_READ(dvo_reg) & (DVO_PRESERVE_MASK | DVO_DATA_ORDER_GBRG); dvo_val |= DVO_DATA_ORDER_FP | DVO_BORDER_ENABLE | DVO_BLANK_ACTIVE_HIGH; if (pipe == 1) dvo_val |= DVO_PIPE_B_SELECT; dvo_val |= DVO_PIPE_STALL; if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) dvo_val |= DVO_HSYNC_ACTIVE_HIGH; if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) dvo_val |= DVO_VSYNC_ACTIVE_HIGH; I915_WRITE(dpll_reg, I915_READ(dpll_reg) | DPLL_DVO_HIGH_SPEED); /*I915_WRITE(DVOB_SRCDIM, (adjusted_mode->hdisplay << DVO_SRCDIM_HORIZONTAL_SHIFT) | (adjusted_mode->VDisplay << DVO_SRCDIM_VERTICAL_SHIFT));*/ I915_WRITE(dvo_srcdim_reg, (adjusted_mode->hdisplay << DVO_SRCDIM_HORIZONTAL_SHIFT) | (adjusted_mode->vdisplay << DVO_SRCDIM_VERTICAL_SHIFT)); /*I915_WRITE(DVOB, dvo_val);*/ I915_WRITE(dvo_reg, dvo_val); } /** * Detect the output connection on our DVO device. * * Unimplemented. */ static enum drm_connector_status intel_dvo_detect(struct drm_connector *connector, bool force) { struct intel_dvo *intel_dvo = intel_attached_dvo(connector); return intel_dvo->dev.dev_ops->detect(&intel_dvo->dev); } static int intel_dvo_get_modes(struct drm_connector *connector) { struct intel_dvo *intel_dvo = intel_attached_dvo(connector); struct drm_i915_private *dev_priv = connector->dev->dev_private; /* We should probably have an i2c driver get_modes function for those * devices which will have a fixed set of modes determined by the chip * (TV-out, for example), but for now with just TMDS and LVDS, * that's not the case. */ intel_ddc_get_modes(connector, intel_gmbus_get_adapter(dev_priv, GMBUS_PORT_DPC)); if (!list_empty(&connector->probed_modes)) return 1; if (intel_dvo->panel_fixed_mode != NULL) { struct drm_display_mode *mode; mode = drm_mode_duplicate(connector->dev, intel_dvo->panel_fixed_mode); if (mode) { drm_mode_probed_add(connector, mode); return 1; } } return 0; } static void intel_dvo_destroy(struct drm_connector *connector) { drm_sysfs_connector_remove(connector); drm_connector_cleanup(connector); kfree(connector); } static const struct drm_encoder_helper_funcs intel_dvo_helper_funcs = { .dpms = intel_dvo_dpms, .mode_fixup = intel_dvo_mode_fixup, .prepare = intel_encoder_prepare, .mode_set = intel_dvo_mode_set, .commit = intel_encoder_commit, }; static const struct drm_connector_funcs intel_dvo_connector_funcs = { .dpms = drm_helper_connector_dpms, .detect = intel_dvo_detect, .destroy = intel_dvo_destroy, .fill_modes = drm_helper_probe_single_connector_modes, }; static const struct drm_connector_helper_funcs intel_dvo_connector_helper_funcs = { .mode_valid = intel_dvo_mode_valid, .get_modes = intel_dvo_get_modes, .best_encoder = intel_best_encoder, }; static void intel_dvo_enc_destroy(struct drm_encoder *encoder) { struct intel_dvo *intel_dvo = enc_to_intel_dvo(encoder); if (intel_dvo->dev.dev_ops->destroy) intel_dvo->dev.dev_ops->destroy(&intel_dvo->dev); kfree(intel_dvo->panel_fixed_mode); intel_encoder_destroy(encoder); } static const struct drm_encoder_funcs intel_dvo_enc_funcs = { .destroy = intel_dvo_enc_destroy, }; /** * Attempts to get a fixed panel timing for LVDS (currently only the i830). * * Other chips with DVO LVDS will need to extend this to deal with the LVDS * chip being on DVOB/C and having multiple pipes. */ static struct drm_display_mode * intel_dvo_get_current_mode(struct drm_connector *connector) { struct drm_device *dev = connector->dev; struct drm_i915_private *dev_priv = dev->dev_private; struct intel_dvo *intel_dvo = intel_attached_dvo(connector); uint32_t dvo_val = I915_READ(intel_dvo->dev.dvo_reg); struct drm_display_mode *mode = NULL; /* If the DVO port is active, that'll be the LVDS, so we can pull out * its timings to get how the BIOS set up the panel. */ if (dvo_val & DVO_ENABLE) { struct drm_crtc *crtc; int pipe = (dvo_val & DVO_PIPE_B_SELECT) ? 1 : 0; crtc = intel_get_crtc_for_pipe(dev, pipe); if (crtc) { mode = intel_crtc_mode_get(dev, crtc); if (mode) { mode->type |= DRM_MODE_TYPE_PREFERRED; if (dvo_val & DVO_HSYNC_ACTIVE_HIGH) mode->flags |= DRM_MODE_FLAG_PHSYNC; if (dvo_val & DVO_VSYNC_ACTIVE_HIGH) mode->flags |= DRM_MODE_FLAG_PVSYNC; } } } return mode; } void intel_dvo_init(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; struct intel_encoder *intel_encoder; struct intel_dvo *intel_dvo; struct intel_connector *intel_connector; int i; int encoder_type = DRM_MODE_ENCODER_NONE; intel_dvo = kzalloc(sizeof(struct intel_dvo), GFP_KERNEL); if (!intel_dvo) return; intel_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL); if (!intel_connector) { kfree(intel_dvo); return; } intel_encoder = &intel_dvo->base; drm_encoder_init(dev, &intel_encoder->base, &intel_dvo_enc_funcs, encoder_type); /* Now, try to find a controller */ for (i = 0; i < ARRAY_SIZE(intel_dvo_devices); i++) { struct drm_connector *connector = &intel_connector->base; const struct intel_dvo_device *dvo = &intel_dvo_devices[i]; struct i2c_adapter *i2c; int gpio; /* Allow the I2C driver info to specify the GPIO to be used in * special cases, but otherwise default to what's defined * in the spec. */ if (intel_gmbus_is_port_valid(dvo->gpio)) gpio = dvo->gpio; else if (dvo->type == INTEL_DVO_CHIP_LVDS) gpio = GMBUS_PORT_SSC; else gpio = GMBUS_PORT_DPB; /* Set up the I2C bus necessary for the chip we're probing. * It appears that everything is on GPIOE except for panels * on i830 laptops, which are on GPIOB (DVOA). */ i2c = intel_gmbus_get_adapter(dev_priv, gpio); intel_dvo->dev = *dvo; if (!dvo->dev_ops->init(&intel_dvo->dev, i2c)) continue; intel_encoder->type = INTEL_OUTPUT_DVO; intel_encoder->crtc_mask = (1 << 0) | (1 << 1); switch (dvo->type) { case INTEL_DVO_CHIP_TMDS: intel_encoder->clone_mask = (1 << INTEL_DVO_TMDS_CLONE_BIT) | (1 << INTEL_ANALOG_CLONE_BIT); drm_connector_init(dev, connector, &intel_dvo_connector_funcs, DRM_MODE_CONNECTOR_DVII); encoder_type = DRM_MODE_ENCODER_TMDS; break; case INTEL_DVO_CHIP_LVDS: intel_encoder->clone_mask = (1 << INTEL_DVO_LVDS_CLONE_BIT); drm_connector_init(dev, connector, &intel_dvo_connector_funcs, DRM_MODE_CONNECTOR_LVDS); encoder_type = DRM_MODE_ENCODER_LVDS; break; } drm_connector_helper_add(connector, &intel_dvo_connector_helper_funcs); connector->display_info.subpixel_order = SubPixelHorizontalRGB; connector->interlace_allowed = false; connector->doublescan_allowed = false; drm_encoder_helper_add(&intel_encoder->base, &intel_dvo_helper_funcs); intel_connector_attach_encoder(intel_connector, intel_encoder); if (dvo->type == INTEL_DVO_CHIP_LVDS) { /* For our LVDS chipsets, we should hopefully be able * to dig the fixed panel mode out of the BIOS data. * However, it's in a different format from the BIOS * data on chipsets with integrated LVDS (stored in AIM * headers, likely), so for now, just get the current * mode being output through DVO. */ intel_dvo->panel_fixed_mode = intel_dvo_get_current_mode(connector); intel_dvo->panel_wants_dither = true; } drm_sysfs_connector_add(connector); return; } drm_encoder_cleanup(&intel_encoder->base); kfree(intel_dvo); kfree(intel_connector); }