/* * 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 #include "i915_drv.h" #include "i915_reg.h" #include "intel_atomic.h" #include "intel_backlight.h" #include "intel_connector.h" #include "intel_de.h" #include "intel_display_types.h" #include "intel_dpll.h" #include "intel_fdi.h" #include "intel_gmbus.h" #include "intel_lvds.h" #include "intel_lvds_regs.h" #include "intel_panel.h" #include "intel_pps_regs.h" /* 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 intel_encoder *encoder) { return container_of(encoder, struct intel_lvds_encoder, base); } bool intel_lvds_port_enabled(struct drm_i915_private *i915, i915_reg_t lvds_reg, enum pipe *pipe) { u32 val; val = intel_de_read(i915, lvds_reg); /* asserts want to know the pipe even if the port is disabled */ if (HAS_PCH_CPT(i915)) *pipe = REG_FIELD_GET(LVDS_PIPE_SEL_MASK_CPT, val); else *pipe = REG_FIELD_GET(LVDS_PIPE_SEL_MASK, val); return val & LVDS_PORT_EN; } static bool intel_lvds_get_hw_state(struct intel_encoder *encoder, enum pipe *pipe) { struct drm_i915_private *i915 = to_i915(encoder->base.dev); struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(encoder); intel_wakeref_t wakeref; bool ret; wakeref = intel_display_power_get_if_enabled(i915, encoder->power_domain); if (!wakeref) return false; ret = intel_lvds_port_enabled(i915, lvds_encoder->reg, pipe); intel_display_power_put(i915, encoder->power_domain, wakeref); return ret; } static void intel_lvds_get_config(struct intel_encoder *encoder, struct intel_crtc_state *crtc_state) { struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(encoder); u32 tmp, flags = 0; crtc_state->output_types |= BIT(INTEL_OUTPUT_LVDS); tmp = intel_de_read(dev_priv, 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; crtc_state->hw.adjusted_mode.flags |= flags; if (DISPLAY_VER(dev_priv) < 5) crtc_state->gmch_pfit.lvds_border_bits = tmp & LVDS_BORDER_ENABLE; /* gen2/3 store dither state in pfit control, needs to match */ if (DISPLAY_VER(dev_priv) < 4) { tmp = intel_de_read(dev_priv, PFIT_CONTROL); crtc_state->gmch_pfit.control |= tmp & PFIT_PANEL_8TO6_DITHER_ENABLE; } crtc_state->hw.adjusted_mode.crtc_clock = crtc_state->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 = intel_de_read(dev_priv, PP_CONTROL(0)) & PANEL_POWER_RESET; val = intel_de_read(dev_priv, 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 = intel_de_read(dev_priv, 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 = intel_de_read(dev_priv, 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 (DISPLAY_VER(dev_priv) <= 4 && pps->t1_t2 == 0 && pps->t5 == 0 && pps->t3 == 0 && pps->tx == 0) { drm_dbg_kms(&dev_priv->drm, "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_dbg(&dev_priv->drm, "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 = intel_de_read(dev_priv, PP_CONTROL(0)); drm_WARN_ON(&dev_priv->drm, (val & PANEL_UNLOCK_MASK) != PANEL_UNLOCK_REGS); if (pps->powerdown_on_reset) val |= PANEL_POWER_RESET; intel_de_write(dev_priv, PP_CONTROL(0), val); intel_de_write(dev_priv, 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)); intel_de_write(dev_priv, PP_OFF_DELAYS(0), REG_FIELD_PREP(PANEL_POWER_DOWN_DELAY_MASK, pps->t3) | REG_FIELD_PREP(PANEL_LIGHT_OFF_DELAY_MASK, pps->tx)); intel_de_write(dev_priv, 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_atomic_state *state, struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state, const struct drm_connector_state *conn_state) { struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(encoder); struct drm_i915_private *i915 = to_i915(encoder->base.dev); struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); const struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode; enum pipe pipe = crtc->pipe; u32 temp; if (HAS_PCH_SPLIT(i915)) { assert_fdi_rx_pll_disabled(i915, pipe); assert_shared_dpll_disabled(i915, crtc_state->shared_dpll); } else { assert_pll_disabled(i915, pipe); } intel_lvds_pps_init_hw(i915, &lvds_encoder->init_pps); temp = lvds_encoder->init_lvds_val; temp |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP; if (HAS_PCH_CPT(i915)) { 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 |= crtc_state->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 TRANSCONF reg. */ if (DISPLAY_VER(i915) == 4) { /* * Bspec wording suggests that LVDS port dithering only exists * for 18bpp panels. */ if (crtc_state->dither && crtc_state->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; intel_de_write(i915, lvds_encoder->reg, temp); } /* * Sets the power state for the panel. */ static void intel_enable_lvds(struct intel_atomic_state *state, struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state, const struct drm_connector_state *conn_state) { struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(encoder); struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); intel_de_rmw(dev_priv, lvds_encoder->reg, 0, LVDS_PORT_EN); intel_de_rmw(dev_priv, PP_CONTROL(0), 0, PANEL_POWER_ON); intel_de_posting_read(dev_priv, lvds_encoder->reg); if (intel_de_wait_for_set(dev_priv, PP_STATUS(0), PP_ON, 5000)) drm_err(&dev_priv->drm, "timed out waiting for panel to power on\n"); intel_backlight_enable(crtc_state, conn_state); } static void intel_disable_lvds(struct intel_atomic_state *state, 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); struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); intel_de_rmw(dev_priv, PP_CONTROL(0), PANEL_POWER_ON, 0); if (intel_de_wait_for_clear(dev_priv, PP_STATUS(0), PP_ON, 1000)) drm_err(&dev_priv->drm, "timed out waiting for panel to power off\n"); intel_de_rmw(dev_priv, lvds_encoder->reg, LVDS_PORT_EN, 0); intel_de_posting_read(dev_priv, lvds_encoder->reg); } static void gmch_disable_lvds(struct intel_atomic_state *state, struct intel_encoder *encoder, const struct intel_crtc_state *old_crtc_state, const struct drm_connector_state *old_conn_state) { intel_backlight_disable(old_conn_state); intel_disable_lvds(state, encoder, old_crtc_state, old_conn_state); } static void pch_disable_lvds(struct intel_atomic_state *state, struct intel_encoder *encoder, const struct intel_crtc_state *old_crtc_state, const struct drm_connector_state *old_conn_state) { intel_backlight_disable(old_conn_state); } static void pch_post_disable_lvds(struct intel_atomic_state *state, struct intel_encoder *encoder, const struct intel_crtc_state *old_crtc_state, const struct drm_connector_state *old_conn_state) { intel_disable_lvds(state, encoder, old_crtc_state, old_conn_state); } static void intel_lvds_shutdown(struct intel_encoder *encoder) { struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); if (intel_de_wait_for_clear(dev_priv, PP_STATUS(0), PP_CYCLE_DELAY_ACTIVE, 5000)) drm_err(&dev_priv->drm, "timed out waiting for panel power cycle delay\n"); } static enum drm_mode_status intel_lvds_mode_valid(struct drm_connector *_connector, struct drm_display_mode *mode) { struct intel_connector *connector = to_intel_connector(_connector); const struct drm_display_mode *fixed_mode = intel_panel_fixed_mode(connector, mode); int max_pixclk = to_i915(connector->base.dev)->max_dotclk_freq; enum drm_mode_status status; if (mode->flags & DRM_MODE_FLAG_DBLSCAN) return MODE_NO_DBLESCAN; status = intel_panel_mode_valid(connector, mode); if (status != MODE_OK) return status; if (fixed_mode->clock > max_pixclk) return MODE_CLOCK_HIGH; return MODE_OK; } static int intel_lvds_compute_config(struct intel_encoder *encoder, struct intel_crtc_state *crtc_state, struct drm_connector_state *conn_state) { struct drm_i915_private *i915 = to_i915(encoder->base.dev); struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(encoder); struct intel_connector *connector = lvds_encoder->attached_connector; struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode; struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); unsigned int lvds_bpp; int ret; /* Should never happen!! */ if (DISPLAY_VER(i915) < 4 && crtc->pipe == 0) { drm_err(&i915->drm, "Can't support LVDS on pipe A\n"); return -EINVAL; } if (HAS_PCH_SPLIT(i915)) { crtc_state->has_pch_encoder = true; if (!intel_fdi_compute_pipe_bpp(crtc_state)) return -EINVAL; } if (lvds_encoder->a3_power == LVDS_A3_POWER_UP) lvds_bpp = 8*3; else lvds_bpp = 6*3; /* TODO: Check crtc_state->max_link_bpp_x16 instead of bw_constrained */ if (lvds_bpp != crtc_state->pipe_bpp && !crtc_state->bw_constrained) { drm_dbg_kms(&i915->drm, "forcing display bpp (was %d) to LVDS (%d)\n", crtc_state->pipe_bpp, lvds_bpp); crtc_state->pipe_bpp = lvds_bpp; } crtc_state->sink_format = INTEL_OUTPUT_FORMAT_RGB; crtc_state->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. */ ret = intel_panel_compute_config(connector, adjusted_mode); if (ret) return ret; if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN) return -EINVAL; ret = intel_panel_fitting(crtc_state, conn_state); if (ret) return ret; /* * 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; } /* * 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 *connector = to_intel_connector(_connector); const struct drm_edid *fixed_edid = connector->panel.fixed_edid; /* Use panel fixed edid if we have one */ if (!IS_ERR_OR_NULL(fixed_edid)) { drm_edid_connector_update(&connector->base, fixed_edid); return drm_edid_connector_add_modes(&connector->base); } return intel_panel_get_modes(connector); } 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_panel_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 *i915) { struct intel_encoder *encoder; for_each_intel_encoder(&i915->drm, encoder) { if (encoder->type == INTEL_OUTPUT_LVDS) return encoder; } return NULL; } bool intel_is_dual_link_lvds(struct drm_i915_private *i915) { struct intel_encoder *encoder = intel_get_lvds_encoder(i915); return encoder && to_lvds_encoder(encoder)->is_dual_link; } static bool compute_is_dual_link_lvds(struct intel_lvds_encoder *lvds_encoder) { struct drm_i915_private *i915 = to_i915(lvds_encoder->base.base.dev); struct intel_connector *connector = lvds_encoder->attached_connector; const struct drm_display_mode *fixed_mode = intel_panel_preferred_fixed_mode(connector); unsigned int val; /* use the module option value if specified */ if (i915->params.lvds_channel_mode > 0) return i915->params.lvds_channel_mode == 2; /* single channel LVDS is limited to 112 MHz */ if (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 = intel_de_read(i915, lvds_encoder->reg); if (HAS_PCH_CPT(i915)) val &= ~(LVDS_DETECTED | LVDS_PIPE_SEL_MASK_CPT); else val &= ~(LVDS_DETECTED | LVDS_PIPE_SEL_MASK); if (val == 0) val = connector->panel.vbt.bios_lvds_val; return (val & LVDS_CLKB_POWER_MASK) == LVDS_CLKB_POWER_UP; } static void intel_lvds_add_properties(struct drm_connector *connector) { intel_attach_scaling_mode_property(connector); } /** * intel_lvds_init - setup LVDS connectors on this device * @i915: 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 *i915) { struct intel_lvds_encoder *lvds_encoder; struct intel_connector *connector; const struct drm_edid *drm_edid; struct intel_encoder *encoder; i915_reg_t lvds_reg; u32 lvds; u8 ddc_pin; /* Skip init on machines we know falsely report LVDS */ if (dmi_check_system(intel_no_lvds)) { drm_WARN(&i915->drm, !i915->display.vbt.int_lvds_support, "Useless DMI match. Internal LVDS support disabled by VBT\n"); return; } if (!i915->display.vbt.int_lvds_support) { drm_dbg_kms(&i915->drm, "Internal LVDS support disabled by VBT\n"); return; } if (HAS_PCH_SPLIT(i915)) lvds_reg = PCH_LVDS; else lvds_reg = LVDS; lvds = intel_de_read(i915, lvds_reg); if (HAS_PCH_SPLIT(i915)) { if ((lvds & LVDS_DETECTED) == 0) return; } ddc_pin = GMBUS_PIN_PANEL; if (!intel_bios_is_lvds_present(i915, &ddc_pin)) { if ((lvds & LVDS_PORT_EN) == 0) { drm_dbg_kms(&i915->drm, "LVDS is not present in VBT\n"); return; } drm_dbg_kms(&i915->drm, "LVDS is not present in VBT, but enabled anyway\n"); } lvds_encoder = kzalloc(sizeof(*lvds_encoder), GFP_KERNEL); if (!lvds_encoder) return; connector = intel_connector_alloc(); if (!connector) { kfree(lvds_encoder); return; } lvds_encoder->attached_connector = connector; encoder = &lvds_encoder->base; drm_connector_init_with_ddc(&i915->drm, &connector->base, &intel_lvds_connector_funcs, DRM_MODE_CONNECTOR_LVDS, intel_gmbus_get_adapter(i915, ddc_pin)); drm_encoder_init(&i915->drm, &encoder->base, &intel_lvds_enc_funcs, DRM_MODE_ENCODER_LVDS, "LVDS"); encoder->enable = intel_enable_lvds; encoder->pre_enable = intel_pre_enable_lvds; encoder->compute_config = intel_lvds_compute_config; if (HAS_PCH_SPLIT(i915)) { encoder->disable = pch_disable_lvds; encoder->post_disable = pch_post_disable_lvds; } else { encoder->disable = gmch_disable_lvds; } encoder->get_hw_state = intel_lvds_get_hw_state; encoder->get_config = intel_lvds_get_config; encoder->update_pipe = intel_backlight_update; encoder->shutdown = intel_lvds_shutdown; connector->get_hw_state = intel_connector_get_hw_state; intel_connector_attach_encoder(connector, encoder); encoder->type = INTEL_OUTPUT_LVDS; encoder->power_domain = POWER_DOMAIN_PORT_OTHER; encoder->port = PORT_NONE; encoder->cloneable = 0; if (DISPLAY_VER(i915) < 4) encoder->pipe_mask = BIT(PIPE_B); else encoder->pipe_mask = ~0; drm_connector_helper_add(&connector->base, &intel_lvds_connector_helper_funcs); connector->base.display_info.subpixel_order = SubPixelHorizontalRGB; lvds_encoder->reg = lvds_reg; intel_lvds_add_properties(&connector->base); intel_lvds_pps_get_hw_state(i915, &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(&i915->drm.mode_config.mutex); if (vga_switcheroo_handler_flags() & VGA_SWITCHEROO_CAN_SWITCH_DDC) drm_edid = drm_edid_read_switcheroo(&connector->base, connector->base.ddc); else drm_edid = drm_edid_read_ddc(&connector->base, connector->base.ddc); if (drm_edid) { if (drm_edid_connector_update(&connector->base, drm_edid) || !drm_edid_connector_add_modes(&connector->base)) { drm_edid_connector_update(&connector->base, NULL); drm_edid_free(drm_edid); drm_edid = ERR_PTR(-EINVAL); } } else { drm_edid = ERR_PTR(-ENOENT); } intel_bios_init_panel_late(i915, &connector->panel, NULL, IS_ERR(drm_edid) ? NULL : drm_edid); /* Try EDID first */ intel_panel_add_edid_fixed_modes(connector, true); /* Failed to get EDID, what about VBT? */ if (!intel_panel_preferred_fixed_mode(connector)) intel_panel_add_vbt_lfp_fixed_mode(connector); /* * If we didn't get a fixed mode from EDID or VBT, try checking * if the panel is already turned on. If so, assume that * whatever is currently programmed is the correct mode. */ if (!intel_panel_preferred_fixed_mode(connector)) intel_panel_add_encoder_fixed_mode(connector, encoder); mutex_unlock(&i915->drm.mode_config.mutex); /* If we still don't have a mode after all that, give up. */ if (!intel_panel_preferred_fixed_mode(connector)) goto failed; intel_panel_init(connector, drm_edid); intel_backlight_setup(connector, INVALID_PIPE); lvds_encoder->is_dual_link = compute_is_dual_link_lvds(lvds_encoder); drm_dbg_kms(&i915->drm, "detected %s-link lvds configuration\n", lvds_encoder->is_dual_link ? "dual" : "single"); lvds_encoder->a3_power = lvds & LVDS_A3_POWER_MASK; return; failed: drm_dbg_kms(&i915->drm, "No LVDS modes found, disabling.\n"); drm_connector_cleanup(&connector->base); drm_encoder_cleanup(&encoder->base); kfree(lvds_encoder); intel_connector_free(connector); return; }