/* * Copyright © 2006-2007 Intel Corporation * Copyright (c) 2006 Dave Airlie * * 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 * Dave Airlie * Jesse Barnes */ #include #include #include #include #include #include #include #include #include "intel_drv.h" #include #include "i915_drv.h" #include /* Private structure for the integrated LVDS support */ struct intel_lvds_pps { /* 100us units */ int t1_t2; int t3; int t4; int t5; int tx; int divider; int port; bool powerdown_on_reset; }; struct intel_lvds_encoder { struct intel_encoder base; bool is_dual_link; i915_reg_t reg; u32 a3_power; struct intel_lvds_pps init_pps; u32 init_lvds_val; struct intel_connector *attached_connector; }; static struct intel_lvds_encoder *to_lvds_encoder(struct drm_encoder *encoder) { return container_of(encoder, struct intel_lvds_encoder, base.base); } bool intel_lvds_port_enabled(struct drm_i915_private *dev_priv, i915_reg_t lvds_reg, enum pipe *pipe) { u32 val; val = I915_READ(lvds_reg); /* asserts want to know the pipe even if the port is disabled */ if (HAS_PCH_CPT(dev_priv)) *pipe = (val & LVDS_PIPE_SEL_MASK_CPT) >> LVDS_PIPE_SEL_SHIFT_CPT; else *pipe = (val & LVDS_PIPE_SEL_MASK) >> LVDS_PIPE_SEL_SHIFT; return val & LVDS_PORT_EN; } static bool intel_lvds_get_hw_state(struct intel_encoder *encoder, enum pipe *pipe) { struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(&encoder->base); intel_wakeref_t wakeref; bool ret; wakeref = intel_display_power_get_if_enabled(dev_priv, encoder->power_domain); if (!wakeref) return false; ret = intel_lvds_port_enabled(dev_priv, lvds_encoder->reg, pipe); intel_display_power_put(dev_priv, encoder->power_domain, wakeref); return ret; } static void intel_lvds_get_config(struct intel_encoder *encoder, struct intel_crtc_state *pipe_config) { struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(&encoder->base); u32 tmp, flags = 0; pipe_config->output_types |= BIT(INTEL_OUTPUT_LVDS); tmp = I915_READ(lvds_encoder->reg); if (tmp & LVDS_HSYNC_POLARITY) flags |= DRM_MODE_FLAG_NHSYNC; else flags |= DRM_MODE_FLAG_PHSYNC; if (tmp & LVDS_VSYNC_POLARITY) flags |= DRM_MODE_FLAG_NVSYNC; else flags |= DRM_MODE_FLAG_PVSYNC; pipe_config->base.adjusted_mode.flags |= flags; if (INTEL_GEN(dev_priv) < 5) pipe_config->gmch_pfit.lvds_border_bits = tmp & LVDS_BORDER_ENABLE; /* gen2/3 store dither state in pfit control, needs to match */ if (INTEL_GEN(dev_priv) < 4) { tmp = I915_READ(PFIT_CONTROL); pipe_config->gmch_pfit.control |= tmp & PANEL_8TO6_DITHER_ENABLE; } pipe_config->base.adjusted_mode.crtc_clock = pipe_config->port_clock; } static void intel_lvds_pps_get_hw_state(struct drm_i915_private *dev_priv, struct intel_lvds_pps *pps) { u32 val; pps->powerdown_on_reset = I915_READ(PP_CONTROL(0)) & PANEL_POWER_RESET; val = I915_READ(PP_ON_DELAYS(0)); pps->port = REG_FIELD_GET(PANEL_PORT_SELECT_MASK, val); pps->t1_t2 = REG_FIELD_GET(PANEL_POWER_UP_DELAY_MASK, val); pps->t5 = REG_FIELD_GET(PANEL_LIGHT_ON_DELAY_MASK, val); val = I915_READ(PP_OFF_DELAYS(0)); pps->t3 = REG_FIELD_GET(PANEL_POWER_DOWN_DELAY_MASK, val); pps->tx = REG_FIELD_GET(PANEL_LIGHT_OFF_DELAY_MASK, val); val = I915_READ(PP_DIVISOR(0)); pps->divider = REG_FIELD_GET(PP_REFERENCE_DIVIDER_MASK, val); val = REG_FIELD_GET(PANEL_POWER_CYCLE_DELAY_MASK, val); /* * Remove the BSpec specified +1 (100ms) offset that accounts for a * too short power-cycle delay due to the asynchronous programming of * the register. */ if (val) val--; /* Convert from 100ms to 100us units */ pps->t4 = val * 1000; if (INTEL_GEN(dev_priv) <= 4 && pps->t1_t2 == 0 && pps->t5 == 0 && pps->t3 == 0 && pps->tx == 0) { DRM_DEBUG_KMS("Panel power timings uninitialized, " "setting defaults\n"); /* Set T2 to 40ms and T5 to 200ms in 100 usec units */ pps->t1_t2 = 40 * 10; pps->t5 = 200 * 10; /* Set T3 to 35ms and Tx to 200ms in 100 usec units */ pps->t3 = 35 * 10; pps->tx = 200 * 10; } DRM_DEBUG_DRIVER("LVDS PPS:t1+t2 %d t3 %d t4 %d t5 %d tx %d " "divider %d port %d powerdown_on_reset %d\n", pps->t1_t2, pps->t3, pps->t4, pps->t5, pps->tx, pps->divider, pps->port, pps->powerdown_on_reset); } static void intel_lvds_pps_init_hw(struct drm_i915_private *dev_priv, struct intel_lvds_pps *pps) { u32 val; val = I915_READ(PP_CONTROL(0)); WARN_ON((val & PANEL_UNLOCK_MASK) != PANEL_UNLOCK_REGS); if (pps->powerdown_on_reset) val |= PANEL_POWER_RESET; I915_WRITE(PP_CONTROL(0), val); I915_WRITE(PP_ON_DELAYS(0), REG_FIELD_PREP(PANEL_PORT_SELECT_MASK, pps->port) | REG_FIELD_PREP(PANEL_POWER_UP_DELAY_MASK, pps->t1_t2) | REG_FIELD_PREP(PANEL_LIGHT_ON_DELAY_MASK, pps->t5)); I915_WRITE(PP_OFF_DELAYS(0), REG_FIELD_PREP(PANEL_POWER_DOWN_DELAY_MASK, pps->t3) | REG_FIELD_PREP(PANEL_LIGHT_OFF_DELAY_MASK, pps->tx)); I915_WRITE(PP_DIVISOR(0), REG_FIELD_PREP(PP_REFERENCE_DIVIDER_MASK, pps->divider) | REG_FIELD_PREP(PANEL_POWER_CYCLE_DELAY_MASK, DIV_ROUND_UP(pps->t4, 1000) + 1)); } static void intel_pre_enable_lvds(struct intel_encoder *encoder, const struct intel_crtc_state *pipe_config, const struct drm_connector_state *conn_state) { struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(&encoder->base); struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); struct intel_crtc *crtc = to_intel_crtc(pipe_config->base.crtc); const struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode; int pipe = crtc->pipe; u32 temp; if (HAS_PCH_SPLIT(dev_priv)) { assert_fdi_rx_pll_disabled(dev_priv, pipe); assert_shared_dpll_disabled(dev_priv, pipe_config->shared_dpll); } else { assert_pll_disabled(dev_priv, pipe); } intel_lvds_pps_init_hw(dev_priv, &lvds_encoder->init_pps); temp = lvds_encoder->init_lvds_val; temp |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP; if (HAS_PCH_CPT(dev_priv)) { temp &= ~LVDS_PIPE_SEL_MASK_CPT; temp |= LVDS_PIPE_SEL_CPT(pipe); } else { temp &= ~LVDS_PIPE_SEL_MASK; temp |= LVDS_PIPE_SEL(pipe); } /* set the corresponsding LVDS_BORDER bit */ temp &= ~LVDS_BORDER_ENABLE; temp |= pipe_config->gmch_pfit.lvds_border_bits; /* * Set the B0-B3 data pairs corresponding to whether we're going to * set the DPLLs for dual-channel mode or not. */ if (lvds_encoder->is_dual_link) temp |= LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP; else temp &= ~(LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP); /* * It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP) * appropriately here, but we need to look more thoroughly into how * panels behave in the two modes. For now, let's just maintain the * value we got from the BIOS. */ temp &= ~LVDS_A3_POWER_MASK; temp |= lvds_encoder->a3_power; /* * Set the dithering flag on LVDS as needed, note that there is no * special lvds dither control bit on pch-split platforms, dithering is * only controlled through the PIPECONF reg. */ if (IS_GEN(dev_priv, 4)) { /* * Bspec wording suggests that LVDS port dithering only exists * for 18bpp panels. */ if (pipe_config->dither && pipe_config->pipe_bpp == 18) temp |= LVDS_ENABLE_DITHER; else temp &= ~LVDS_ENABLE_DITHER; } temp &= ~(LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY); if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC) temp |= LVDS_HSYNC_POLARITY; if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC) temp |= LVDS_VSYNC_POLARITY; I915_WRITE(lvds_encoder->reg, temp); } /* * Sets the power state for the panel. */ static void intel_enable_lvds(struct intel_encoder *encoder, const struct intel_crtc_state *pipe_config, const struct drm_connector_state *conn_state) { struct drm_device *dev = encoder->base.dev; struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(&encoder->base); struct drm_i915_private *dev_priv = to_i915(dev); I915_WRITE(lvds_encoder->reg, I915_READ(lvds_encoder->reg) | LVDS_PORT_EN); I915_WRITE(PP_CONTROL(0), I915_READ(PP_CONTROL(0)) | PANEL_POWER_ON); POSTING_READ(lvds_encoder->reg); if (intel_wait_for_register(dev_priv, PP_STATUS(0), PP_ON, PP_ON, 5000)) DRM_ERROR("timed out waiting for panel to power on\n"); intel_panel_enable_backlight(pipe_config, conn_state); } static void intel_disable_lvds(struct intel_encoder *encoder, const struct intel_crtc_state *old_crtc_state, const struct drm_connector_state *old_conn_state) { struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(&encoder->base); struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); I915_WRITE(PP_CONTROL(0), I915_READ(PP_CONTROL(0)) & ~PANEL_POWER_ON); if (intel_wait_for_register(dev_priv, PP_STATUS(0), PP_ON, 0, 1000)) DRM_ERROR("timed out waiting for panel to power off\n"); I915_WRITE(lvds_encoder->reg, I915_READ(lvds_encoder->reg) & ~LVDS_PORT_EN); POSTING_READ(lvds_encoder->reg); } static void gmch_disable_lvds(struct intel_encoder *encoder, const struct intel_crtc_state *old_crtc_state, const struct drm_connector_state *old_conn_state) { intel_panel_disable_backlight(old_conn_state); intel_disable_lvds(encoder, old_crtc_state, old_conn_state); } static void pch_disable_lvds(struct intel_encoder *encoder, const struct intel_crtc_state *old_crtc_state, const struct drm_connector_state *old_conn_state) { intel_panel_disable_backlight(old_conn_state); } static void pch_post_disable_lvds(struct intel_encoder *encoder, const struct intel_crtc_state *old_crtc_state, const struct drm_connector_state *old_conn_state) { intel_disable_lvds(encoder, old_crtc_state, old_conn_state); } static enum drm_mode_status intel_lvds_mode_valid(struct drm_connector *connector, struct drm_display_mode *mode) { struct intel_connector *intel_connector = to_intel_connector(connector); struct drm_display_mode *fixed_mode = intel_connector->panel.fixed_mode; int max_pixclk = to_i915(connector->dev)->max_dotclk_freq; if (mode->flags & DRM_MODE_FLAG_DBLSCAN) return MODE_NO_DBLESCAN; if (mode->hdisplay > fixed_mode->hdisplay) return MODE_PANEL; if (mode->vdisplay > fixed_mode->vdisplay) return MODE_PANEL; if (fixed_mode->clock > max_pixclk) return MODE_CLOCK_HIGH; return MODE_OK; } static int intel_lvds_compute_config(struct intel_encoder *intel_encoder, struct intel_crtc_state *pipe_config, struct drm_connector_state *conn_state) { struct drm_i915_private *dev_priv = to_i915(intel_encoder->base.dev); struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(&intel_encoder->base); struct intel_connector *intel_connector = lvds_encoder->attached_connector; struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode; struct intel_crtc *intel_crtc = to_intel_crtc(pipe_config->base.crtc); unsigned int lvds_bpp; /* Should never happen!! */ if (INTEL_GEN(dev_priv) < 4 && intel_crtc->pipe == 0) { DRM_ERROR("Can't support LVDS on pipe A\n"); return -EINVAL; } if (lvds_encoder->a3_power == LVDS_A3_POWER_UP) lvds_bpp = 8*3; else lvds_bpp = 6*3; if (lvds_bpp != pipe_config->pipe_bpp && !pipe_config->bw_constrained) { DRM_DEBUG_KMS("forcing display bpp (was %d) to LVDS (%d)\n", pipe_config->pipe_bpp, lvds_bpp); pipe_config->pipe_bpp = lvds_bpp; } pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB; /* * 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. */ intel_fixed_panel_mode(intel_connector->panel.fixed_mode, adjusted_mode); if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN) return -EINVAL; if (HAS_PCH_SPLIT(dev_priv)) { pipe_config->has_pch_encoder = true; intel_pch_panel_fitting(intel_crtc, pipe_config, conn_state->scaling_mode); } else { intel_gmch_panel_fitting(intel_crtc, pipe_config, conn_state->scaling_mode); } /* * XXX: It would be nice to support lower refresh rates on the * panels to reduce power consumption, and perhaps match the * user's requested refresh rate. */ return 0; } static enum drm_connector_status intel_lvds_detect(struct drm_connector *connector, bool force) { return connector_status_connected; } /* * Return the list of DDC modes if available, or the BIOS fixed mode otherwise. */ static int intel_lvds_get_modes(struct drm_connector *connector) { struct intel_connector *intel_connector = to_intel_connector(connector); struct drm_device *dev = connector->dev; struct drm_display_mode *mode; /* use cached edid if we have one */ if (!IS_ERR_OR_NULL(intel_connector->edid)) return drm_add_edid_modes(connector, intel_connector->edid); mode = drm_mode_duplicate(dev, intel_connector->panel.fixed_mode); if (mode == NULL) return 0; drm_mode_probed_add(connector, mode); return 1; } static const struct drm_connector_helper_funcs intel_lvds_connector_helper_funcs = { .get_modes = intel_lvds_get_modes, .mode_valid = intel_lvds_mode_valid, .atomic_check = intel_digital_connector_atomic_check, }; static const struct drm_connector_funcs intel_lvds_connector_funcs = { .detect = intel_lvds_detect, .fill_modes = drm_helper_probe_single_connector_modes, .atomic_get_property = intel_digital_connector_atomic_get_property, .atomic_set_property = intel_digital_connector_atomic_set_property, .late_register = intel_connector_register, .early_unregister = intel_connector_unregister, .destroy = intel_connector_destroy, .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, .atomic_duplicate_state = intel_digital_connector_duplicate_state, }; static const struct drm_encoder_funcs intel_lvds_enc_funcs = { .destroy = intel_encoder_destroy, }; static int intel_no_lvds_dmi_callback(const struct dmi_system_id *id) { DRM_INFO("Skipping LVDS initialization for %s\n", id->ident); return 1; } /* These systems claim to have LVDS, but really don't */ static const struct dmi_system_id intel_no_lvds[] = { { .callback = intel_no_lvds_dmi_callback, .ident = "Apple Mac Mini (Core series)", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Apple"), DMI_MATCH(DMI_PRODUCT_NAME, "Macmini1,1"), }, }, { .callback = intel_no_lvds_dmi_callback, .ident = "Apple Mac Mini (Core 2 series)", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Apple"), DMI_MATCH(DMI_PRODUCT_NAME, "Macmini2,1"), }, }, { .callback = intel_no_lvds_dmi_callback, .ident = "MSI IM-945GSE-A", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "MSI"), DMI_MATCH(DMI_PRODUCT_NAME, "A9830IMS"), }, }, { .callback = intel_no_lvds_dmi_callback, .ident = "Dell Studio Hybrid", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "Studio Hybrid 140g"), }, }, { .callback = intel_no_lvds_dmi_callback, .ident = "Dell OptiPlex FX170", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex FX170"), }, }, { .callback = intel_no_lvds_dmi_callback, .ident = "AOpen Mini PC", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "AOpen"), DMI_MATCH(DMI_PRODUCT_NAME, "i965GMx-IF"), }, }, { .callback = intel_no_lvds_dmi_callback, .ident = "AOpen Mini PC MP915", .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"), DMI_MATCH(DMI_BOARD_NAME, "i915GMx-F"), }, }, { .callback = intel_no_lvds_dmi_callback, .ident = "AOpen i915GMm-HFS", .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"), DMI_MATCH(DMI_BOARD_NAME, "i915GMm-HFS"), }, }, { .callback = intel_no_lvds_dmi_callback, .ident = "AOpen i45GMx-I", .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"), DMI_MATCH(DMI_BOARD_NAME, "i45GMx-I"), }, }, { .callback = intel_no_lvds_dmi_callback, .ident = "Aopen i945GTt-VFA", .matches = { DMI_MATCH(DMI_PRODUCT_VERSION, "AO00001JW"), }, }, { .callback = intel_no_lvds_dmi_callback, .ident = "Clientron U800", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Clientron"), DMI_MATCH(DMI_PRODUCT_NAME, "U800"), }, }, { .callback = intel_no_lvds_dmi_callback, .ident = "Clientron E830", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Clientron"), DMI_MATCH(DMI_PRODUCT_NAME, "E830"), }, }, { .callback = intel_no_lvds_dmi_callback, .ident = "Asus EeeBox PC EB1007", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer INC."), DMI_MATCH(DMI_PRODUCT_NAME, "EB1007"), }, }, { .callback = intel_no_lvds_dmi_callback, .ident = "Asus AT5NM10T-I", .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), DMI_MATCH(DMI_BOARD_NAME, "AT5NM10T-I"), }, }, { .callback = intel_no_lvds_dmi_callback, .ident = "Hewlett-Packard HP t5740", .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), DMI_MATCH(DMI_PRODUCT_NAME, " t5740"), }, }, { .callback = intel_no_lvds_dmi_callback, .ident = "Hewlett-Packard t5745", .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), DMI_MATCH(DMI_PRODUCT_NAME, "hp t5745"), }, }, { .callback = intel_no_lvds_dmi_callback, .ident = "Hewlett-Packard st5747", .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), DMI_MATCH(DMI_PRODUCT_NAME, "hp st5747"), }, }, { .callback = intel_no_lvds_dmi_callback, .ident = "MSI Wind Box DC500", .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "MICRO-STAR INTERNATIONAL CO., LTD"), DMI_MATCH(DMI_BOARD_NAME, "MS-7469"), }, }, { .callback = intel_no_lvds_dmi_callback, .ident = "Gigabyte GA-D525TUD", .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "Gigabyte Technology Co., Ltd."), DMI_MATCH(DMI_BOARD_NAME, "D525TUD"), }, }, { .callback = intel_no_lvds_dmi_callback, .ident = "Supermicro X7SPA-H", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Supermicro"), DMI_MATCH(DMI_PRODUCT_NAME, "X7SPA-H"), }, }, { .callback = intel_no_lvds_dmi_callback, .ident = "Fujitsu Esprimo Q900", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Q900"), }, }, { .callback = intel_no_lvds_dmi_callback, .ident = "Intel D410PT", .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "Intel"), DMI_MATCH(DMI_BOARD_NAME, "D410PT"), }, }, { .callback = intel_no_lvds_dmi_callback, .ident = "Intel D425KT", .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "Intel"), DMI_EXACT_MATCH(DMI_BOARD_NAME, "D425KT"), }, }, { .callback = intel_no_lvds_dmi_callback, .ident = "Intel D510MO", .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "Intel"), DMI_EXACT_MATCH(DMI_BOARD_NAME, "D510MO"), }, }, { .callback = intel_no_lvds_dmi_callback, .ident = "Intel D525MW", .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "Intel"), DMI_EXACT_MATCH(DMI_BOARD_NAME, "D525MW"), }, }, { .callback = intel_no_lvds_dmi_callback, .ident = "Radiant P845", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Radiant Systems Inc"), DMI_MATCH(DMI_PRODUCT_NAME, "P845"), }, }, { } /* terminating entry */ }; static int intel_dual_link_lvds_callback(const struct dmi_system_id *id) { DRM_INFO("Forcing lvds to dual link mode on %s\n", id->ident); return 1; } static const struct dmi_system_id intel_dual_link_lvds[] = { { .callback = intel_dual_link_lvds_callback, .ident = "Apple MacBook Pro 15\" (2010)", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro6,2"), }, }, { .callback = intel_dual_link_lvds_callback, .ident = "Apple MacBook Pro 15\" (2011)", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro8,2"), }, }, { .callback = intel_dual_link_lvds_callback, .ident = "Apple MacBook Pro 15\" (2012)", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro9,1"), }, }, { } /* terminating entry */ }; struct intel_encoder *intel_get_lvds_encoder(struct drm_i915_private *dev_priv) { struct intel_encoder *encoder; for_each_intel_encoder(&dev_priv->drm, encoder) { if (encoder->type == INTEL_OUTPUT_LVDS) return encoder; } return NULL; } bool intel_is_dual_link_lvds(struct drm_i915_private *dev_priv) { struct intel_encoder *encoder = intel_get_lvds_encoder(dev_priv); return encoder && to_lvds_encoder(&encoder->base)->is_dual_link; } static bool compute_is_dual_link_lvds(struct intel_lvds_encoder *lvds_encoder) { struct drm_device *dev = lvds_encoder->base.base.dev; unsigned int val; struct drm_i915_private *dev_priv = to_i915(dev); /* use the module option value if specified */ if (i915_modparams.lvds_channel_mode > 0) return i915_modparams.lvds_channel_mode == 2; /* single channel LVDS is limited to 112 MHz */ if (lvds_encoder->attached_connector->panel.fixed_mode->clock > 112999) return true; if (dmi_check_system(intel_dual_link_lvds)) return true; /* * BIOS should set the proper LVDS register value at boot, but * in reality, it doesn't set the value when the lid is closed; * we need to check "the value to be set" in VBT when LVDS * register is uninitialized. */ val = I915_READ(lvds_encoder->reg); if (HAS_PCH_CPT(dev_priv)) val &= ~(LVDS_DETECTED | LVDS_PIPE_SEL_MASK_CPT); else val &= ~(LVDS_DETECTED | LVDS_PIPE_SEL_MASK); if (val == 0) val = dev_priv->vbt.bios_lvds_val; return (val & LVDS_CLKB_POWER_MASK) == LVDS_CLKB_POWER_UP; } /** * intel_lvds_init - setup LVDS connectors on this device * @dev_priv: i915 device * * Create the connector, register the LVDS DDC bus, and try to figure out what * modes we can display on the LVDS panel (if present). */ void intel_lvds_init(struct drm_i915_private *dev_priv) { struct drm_device *dev = &dev_priv->drm; struct intel_lvds_encoder *lvds_encoder; struct intel_encoder *intel_encoder; struct intel_connector *intel_connector; struct drm_connector *connector; struct drm_encoder *encoder; struct drm_display_mode *fixed_mode = NULL; struct drm_display_mode *downclock_mode = NULL; struct edid *edid; i915_reg_t lvds_reg; u32 lvds; u8 pin; u32 allowed_scalers; /* Skip init on machines we know falsely report LVDS */ if (dmi_check_system(intel_no_lvds)) { WARN(!dev_priv->vbt.int_lvds_support, "Useless DMI match. Internal LVDS support disabled by VBT\n"); return; } if (!dev_priv->vbt.int_lvds_support) { DRM_DEBUG_KMS("Internal LVDS support disabled by VBT\n"); return; } if (HAS_PCH_SPLIT(dev_priv)) lvds_reg = PCH_LVDS; else lvds_reg = LVDS; lvds = I915_READ(lvds_reg); if (HAS_PCH_SPLIT(dev_priv)) { if ((lvds & LVDS_DETECTED) == 0) return; } pin = GMBUS_PIN_PANEL; if (!intel_bios_is_lvds_present(dev_priv, &pin)) { if ((lvds & LVDS_PORT_EN) == 0) { DRM_DEBUG_KMS("LVDS is not present in VBT\n"); return; } DRM_DEBUG_KMS("LVDS is not present in VBT, but enabled anyway\n"); } lvds_encoder = kzalloc(sizeof(*lvds_encoder), GFP_KERNEL); if (!lvds_encoder) return; intel_connector = intel_connector_alloc(); if (!intel_connector) { kfree(lvds_encoder); return; } lvds_encoder->attached_connector = intel_connector; intel_encoder = &lvds_encoder->base; encoder = &intel_encoder->base; connector = &intel_connector->base; drm_connector_init(dev, &intel_connector->base, &intel_lvds_connector_funcs, DRM_MODE_CONNECTOR_LVDS); drm_encoder_init(dev, &intel_encoder->base, &intel_lvds_enc_funcs, DRM_MODE_ENCODER_LVDS, "LVDS"); intel_encoder->enable = intel_enable_lvds; intel_encoder->pre_enable = intel_pre_enable_lvds; intel_encoder->compute_config = intel_lvds_compute_config; if (HAS_PCH_SPLIT(dev_priv)) { intel_encoder->disable = pch_disable_lvds; intel_encoder->post_disable = pch_post_disable_lvds; } else { intel_encoder->disable = gmch_disable_lvds; } intel_encoder->get_hw_state = intel_lvds_get_hw_state; intel_encoder->get_config = intel_lvds_get_config; intel_encoder->update_pipe = intel_panel_update_backlight; intel_connector->get_hw_state = intel_connector_get_hw_state; intel_connector_attach_encoder(intel_connector, intel_encoder); intel_encoder->type = INTEL_OUTPUT_LVDS; intel_encoder->power_domain = POWER_DOMAIN_PORT_OTHER; intel_encoder->port = PORT_NONE; intel_encoder->cloneable = 0; if (HAS_PCH_SPLIT(dev_priv)) intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2); else if (IS_GEN(dev_priv, 4)) intel_encoder->crtc_mask = (1 << 0) | (1 << 1); else intel_encoder->crtc_mask = (1 << 1); drm_connector_helper_add(connector, &intel_lvds_connector_helper_funcs); connector->display_info.subpixel_order = SubPixelHorizontalRGB; connector->interlace_allowed = false; connector->doublescan_allowed = false; lvds_encoder->reg = lvds_reg; /* create the scaling mode property */ allowed_scalers = BIT(DRM_MODE_SCALE_ASPECT); allowed_scalers |= BIT(DRM_MODE_SCALE_FULLSCREEN); allowed_scalers |= BIT(DRM_MODE_SCALE_CENTER); drm_connector_attach_scaling_mode_property(connector, allowed_scalers); connector->state->scaling_mode = DRM_MODE_SCALE_ASPECT; intel_lvds_pps_get_hw_state(dev_priv, &lvds_encoder->init_pps); lvds_encoder->init_lvds_val = lvds; /* * LVDS discovery: * 1) check for EDID on DDC * 2) check for VBT data * 3) check to see if LVDS is already on * if none of the above, no panel */ /* * Attempt to get the fixed panel mode from DDC. Assume that the * preferred mode is the right one. */ mutex_lock(&dev->mode_config.mutex); if (vga_switcheroo_handler_flags() & VGA_SWITCHEROO_CAN_SWITCH_DDC) edid = drm_get_edid_switcheroo(connector, intel_gmbus_get_adapter(dev_priv, pin)); else edid = drm_get_edid(connector, intel_gmbus_get_adapter(dev_priv, pin)); if (edid) { if (drm_add_edid_modes(connector, edid)) { drm_connector_update_edid_property(connector, edid); } else { kfree(edid); edid = ERR_PTR(-EINVAL); } } else { edid = ERR_PTR(-ENOENT); } intel_connector->edid = edid; fixed_mode = intel_panel_edid_fixed_mode(intel_connector); if (fixed_mode) goto out; /* Failed to get EDID, what about VBT? */ fixed_mode = intel_panel_vbt_fixed_mode(intel_connector); if (fixed_mode) goto out; /* * If we didn't get EDID, try checking if the panel is already turned * on. If so, assume that whatever is currently programmed is the * correct mode. */ fixed_mode = intel_encoder_current_mode(intel_encoder); if (fixed_mode) { DRM_DEBUG_KMS("using current (BIOS) mode: "); drm_mode_debug_printmodeline(fixed_mode); fixed_mode->type |= DRM_MODE_TYPE_PREFERRED; } /* If we still don't have a mode after all that, give up. */ if (!fixed_mode) goto failed; out: mutex_unlock(&dev->mode_config.mutex); intel_panel_init(&intel_connector->panel, fixed_mode, downclock_mode); intel_panel_setup_backlight(connector, INVALID_PIPE); lvds_encoder->is_dual_link = compute_is_dual_link_lvds(lvds_encoder); DRM_DEBUG_KMS("detected %s-link lvds configuration\n", lvds_encoder->is_dual_link ? "dual" : "single"); lvds_encoder->a3_power = lvds & LVDS_A3_POWER_MASK; return; failed: mutex_unlock(&dev->mode_config.mutex); DRM_DEBUG_KMS("No LVDS modes found, disabling.\n"); drm_connector_cleanup(connector); drm_encoder_cleanup(encoder); kfree(lvds_encoder); intel_connector_free(intel_connector); return; }