| /* |
| * Copyright © 2012 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: |
| * Eugeni Dodonov <eugeni.dodonov@intel.com> |
| * |
| */ |
| |
| #include "i915_drv.h" |
| #include "intel_drv.h" |
| |
| /* HDMI/DVI modes ignore everything but the last 2 items. So we share |
| * them for both DP and FDI transports, allowing those ports to |
| * automatically adapt to HDMI connections as well |
| */ |
| static const u32 hsw_ddi_translations_dp[] = { |
| 0x00FFFFFF, 0x0006000E, /* DP parameters */ |
| 0x00D75FFF, 0x0005000A, |
| 0x00C30FFF, 0x00040006, |
| 0x80AAAFFF, 0x000B0000, |
| 0x00FFFFFF, 0x0005000A, |
| 0x00D75FFF, 0x000C0004, |
| 0x80C30FFF, 0x000B0000, |
| 0x00FFFFFF, 0x00040006, |
| 0x80D75FFF, 0x000B0000, |
| 0x00FFFFFF, 0x00040006 /* HDMI parameters */ |
| }; |
| |
| static const u32 hsw_ddi_translations_fdi[] = { |
| 0x00FFFFFF, 0x0007000E, /* FDI parameters */ |
| 0x00D75FFF, 0x000F000A, |
| 0x00C30FFF, 0x00060006, |
| 0x00AAAFFF, 0x001E0000, |
| 0x00FFFFFF, 0x000F000A, |
| 0x00D75FFF, 0x00160004, |
| 0x00C30FFF, 0x001E0000, |
| 0x00FFFFFF, 0x00060006, |
| 0x00D75FFF, 0x001E0000, |
| 0x00FFFFFF, 0x00040006 /* HDMI parameters */ |
| }; |
| |
| static enum port intel_ddi_get_encoder_port(struct intel_encoder *intel_encoder) |
| { |
| int type = intel_encoder->type; |
| |
| if (type == INTEL_OUTPUT_HDMI) { |
| struct intel_hdmi *intel_hdmi = |
| enc_to_intel_hdmi(&intel_encoder->base); |
| return intel_hdmi->ddi_port; |
| } else if (type == INTEL_OUTPUT_ANALOG) { |
| return PORT_E; |
| } else { |
| DRM_ERROR("Invalid DDI encoder type %d\n", type); |
| BUG(); |
| } |
| } |
| |
| /* On Haswell, DDI port buffers must be programmed with correct values |
| * in advance. The buffer values are different for FDI and DP modes, |
| * but the HDMI/DVI fields are shared among those. So we program the DDI |
| * in either FDI or DP modes only, as HDMI connections will work with both |
| * of those |
| */ |
| void intel_prepare_ddi_buffers(struct drm_device *dev, enum port port, bool use_fdi_mode) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| u32 reg; |
| int i; |
| const u32 *ddi_translations = ((use_fdi_mode) ? |
| hsw_ddi_translations_fdi : |
| hsw_ddi_translations_dp); |
| |
| DRM_DEBUG_DRIVER("Initializing DDI buffers for port %c in %s mode\n", |
| port_name(port), |
| use_fdi_mode ? "FDI" : "DP"); |
| |
| WARN((use_fdi_mode && (port != PORT_E)), |
| "Programming port %c in FDI mode, this probably will not work.\n", |
| port_name(port)); |
| |
| for (i=0, reg=DDI_BUF_TRANS(port); i < ARRAY_SIZE(hsw_ddi_translations_fdi); i++) { |
| I915_WRITE(reg, ddi_translations[i]); |
| reg += 4; |
| } |
| } |
| |
| /* Program DDI buffers translations for DP. By default, program ports A-D in DP |
| * mode and port E for FDI. |
| */ |
| void intel_prepare_ddi(struct drm_device *dev) |
| { |
| int port; |
| |
| if (IS_HASWELL(dev)) { |
| for (port = PORT_A; port < PORT_E; port++) |
| intel_prepare_ddi_buffers(dev, port, false); |
| |
| /* DDI E is the suggested one to work in FDI mode, so program is as such by |
| * default. It will have to be re-programmed in case a digital DP output |
| * will be detected on it |
| */ |
| intel_prepare_ddi_buffers(dev, PORT_E, true); |
| } |
| } |
| |
| static const long hsw_ddi_buf_ctl_values[] = { |
| DDI_BUF_EMP_400MV_0DB_HSW, |
| DDI_BUF_EMP_400MV_3_5DB_HSW, |
| DDI_BUF_EMP_400MV_6DB_HSW, |
| DDI_BUF_EMP_400MV_9_5DB_HSW, |
| DDI_BUF_EMP_600MV_0DB_HSW, |
| DDI_BUF_EMP_600MV_3_5DB_HSW, |
| DDI_BUF_EMP_600MV_6DB_HSW, |
| DDI_BUF_EMP_800MV_0DB_HSW, |
| DDI_BUF_EMP_800MV_3_5DB_HSW |
| }; |
| |
| |
| /* Starting with Haswell, different DDI ports can work in FDI mode for |
| * connection to the PCH-located connectors. For this, it is necessary to train |
| * both the DDI port and PCH receiver for the desired DDI buffer settings. |
| * |
| * The recommended port to work in FDI mode is DDI E, which we use here. Also, |
| * please note that when FDI mode is active on DDI E, it shares 2 lines with |
| * DDI A (which is used for eDP) |
| */ |
| |
| void hsw_fdi_link_train(struct drm_crtc *crtc) |
| { |
| struct drm_device *dev = crtc->dev; |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
| int pipe = intel_crtc->pipe; |
| u32 reg, temp, i; |
| |
| /* Configure CPU PLL, wait for warmup */ |
| I915_WRITE(SPLL_CTL, |
| SPLL_PLL_ENABLE | |
| SPLL_PLL_FREQ_1350MHz | |
| SPLL_PLL_SCC); |
| |
| /* Use SPLL to drive the output when in FDI mode */ |
| I915_WRITE(PORT_CLK_SEL(PORT_E), |
| PORT_CLK_SEL_SPLL); |
| |
| udelay(20); |
| |
| /* Start the training iterating through available voltages and emphasis */ |
| for (i=0; i < ARRAY_SIZE(hsw_ddi_buf_ctl_values); i++) { |
| /* Configure DP_TP_CTL with auto-training */ |
| I915_WRITE(DP_TP_CTL(PORT_E), |
| DP_TP_CTL_FDI_AUTOTRAIN | |
| DP_TP_CTL_ENHANCED_FRAME_ENABLE | |
| DP_TP_CTL_LINK_TRAIN_PAT1 | |
| DP_TP_CTL_ENABLE); |
| |
| /* Configure and enable DDI_BUF_CTL for DDI E with next voltage */ |
| temp = I915_READ(DDI_BUF_CTL(PORT_E)); |
| temp = (temp & ~DDI_BUF_EMP_MASK); |
| I915_WRITE(DDI_BUF_CTL(PORT_E), |
| temp | |
| DDI_BUF_CTL_ENABLE | |
| DDI_PORT_WIDTH_X2 | |
| hsw_ddi_buf_ctl_values[i]); |
| |
| udelay(600); |
| |
| /* We need to program FDI_RX_MISC with the default TP1 to TP2 |
| * values before enabling the receiver, and configure the delay |
| * for the FDI timing generator to 90h. Luckily, all the other |
| * bits are supposed to be zeroed, so we can write those values |
| * directly. |
| */ |
| I915_WRITE(FDI_RX_MISC(pipe), FDI_RX_TP1_TO_TP2_48 | |
| FDI_RX_FDI_DELAY_90); |
| |
| /* Enable CPU FDI Receiver with auto-training */ |
| reg = FDI_RX_CTL(pipe); |
| I915_WRITE(reg, |
| I915_READ(reg) | |
| FDI_LINK_TRAIN_AUTO | |
| FDI_RX_ENABLE | |
| FDI_LINK_TRAIN_PATTERN_1_CPT | |
| FDI_RX_ENHANCE_FRAME_ENABLE | |
| FDI_PORT_WIDTH_2X_LPT | |
| FDI_RX_PLL_ENABLE); |
| POSTING_READ(reg); |
| udelay(100); |
| |
| temp = I915_READ(DP_TP_STATUS(PORT_E)); |
| if (temp & DP_TP_STATUS_AUTOTRAIN_DONE) { |
| DRM_DEBUG_DRIVER("BUF_CTL training done on %d step\n", i); |
| |
| /* Enable normal pixel sending for FDI */ |
| I915_WRITE(DP_TP_CTL(PORT_E), |
| DP_TP_CTL_FDI_AUTOTRAIN | |
| DP_TP_CTL_LINK_TRAIN_NORMAL | |
| DP_TP_CTL_ENHANCED_FRAME_ENABLE | |
| DP_TP_CTL_ENABLE); |
| |
| break; |
| } else { |
| DRM_ERROR("Error training BUF_CTL %d\n", i); |
| |
| /* Disable DP_TP_CTL and FDI_RX_CTL) and retry */ |
| I915_WRITE(DP_TP_CTL(PORT_E), |
| I915_READ(DP_TP_CTL(PORT_E)) & |
| ~DP_TP_CTL_ENABLE); |
| I915_WRITE(FDI_RX_CTL(pipe), |
| I915_READ(FDI_RX_CTL(pipe)) & |
| ~FDI_RX_PLL_ENABLE); |
| continue; |
| } |
| } |
| |
| DRM_DEBUG_KMS("FDI train done.\n"); |
| } |
| |
| /* For DDI connections, it is possible to support different outputs over the |
| * same DDI port, such as HDMI or DP or even VGA via FDI. So we don't know by |
| * the time the output is detected what exactly is on the other end of it. This |
| * function aims at providing support for this detection and proper output |
| * configuration. |
| */ |
| void intel_ddi_init(struct drm_device *dev, enum port port) |
| { |
| /* For now, we don't do any proper output detection and assume that we |
| * handle HDMI only */ |
| |
| switch(port){ |
| case PORT_A: |
| /* We don't handle eDP and DP yet */ |
| DRM_DEBUG_DRIVER("Found digital output on DDI port A\n"); |
| break; |
| /* Assume that the ports B, C and D are working in HDMI mode for now */ |
| case PORT_B: |
| case PORT_C: |
| case PORT_D: |
| intel_hdmi_init(dev, DDI_BUF_CTL(port), port); |
| break; |
| default: |
| DRM_DEBUG_DRIVER("No handlers defined for port %d, skipping DDI initialization\n", |
| port); |
| break; |
| } |
| } |
| |
| /* WRPLL clock dividers */ |
| struct wrpll_tmds_clock { |
| u32 clock; |
| u16 p; /* Post divider */ |
| u16 n2; /* Feedback divider */ |
| u16 r2; /* Reference divider */ |
| }; |
| |
| /* 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}, |
| {21000, 36, 21, 15}, |
| {21912, 42, 29, 17}, |
| {22000, 36, 22, 15}, |
| {23000, 36, 23, 15}, |
| {23500, 40, 40, 23}, |
| {23750, 26, 16, 14}, |
| {24000, 36, 24, 15}, |
| {25000, 36, 25, 15}, |
| {25175, 26, 40, 33}, |
| {25200, 30, 21, 15}, |
| {26000, 36, 26, 15}, |
| {27000, 30, 21, 14}, |
| {27027, 18, 100, 111}, |
| {27500, 30, 29, 19}, |
| {28000, 34, 30, 17}, |
| {28320, 26, 30, 22}, |
| {28322, 32, 42, 25}, |
| {28750, 24, 23, 18}, |
| {29000, 30, 29, 18}, |
| {29750, 32, 30, 17}, |
| {30000, 30, 25, 15}, |
| {30750, 30, 41, 24}, |
| {31000, 30, 31, 18}, |
| {31500, 30, 28, 16}, |
| {32000, 30, 32, 18}, |
| {32500, 28, 32, 19}, |
| {33000, 24, 22, 15}, |
| {34000, 28, 30, 17}, |
| {35000, 26, 32, 19}, |
| {35500, 24, 30, 19}, |
| {36000, 26, 26, 15}, |
| {36750, 26, 46, 26}, |
| {37000, 24, 23, 14}, |
| {37762, 22, 40, 26}, |
| {37800, 20, 21, 15}, |
| {38000, 24, 27, 16}, |
| {38250, 24, 34, 20}, |
| {39000, 24, 26, 15}, |
| {40000, 24, 32, 18}, |
| {40500, 20, 21, 14}, |
| {40541, 22, 147, 89}, |
| {40750, 18, 19, 14}, |
| {41000, 16, 17, 14}, |
| {41500, 22, 44, 26}, |
| {41540, 22, 44, 26}, |
| {42000, 18, 21, 15}, |
| {42500, 22, 45, 26}, |
| {43000, 20, 43, 27}, |
| {43163, 20, 24, 15}, |
| {44000, 18, 22, 15}, |
| {44900, 20, 108, 65}, |
| {45000, 20, 25, 15}, |
| {45250, 20, 52, 31}, |
| {46000, 18, 23, 15}, |
| {46750, 20, 45, 26}, |
| {47000, 20, 40, 23}, |
| {48000, 18, 24, 15}, |
| {49000, 18, 49, 30}, |
| {49500, 16, 22, 15}, |
| {50000, 18, 25, 15}, |
| {50500, 18, 32, 19}, |
| {51000, 18, 34, 20}, |
| {52000, 18, 26, 15}, |
| {52406, 14, 34, 25}, |
| {53000, 16, 22, 14}, |
| {54000, 16, 24, 15}, |
| {54054, 16, 173, 108}, |
| {54500, 14, 24, 17}, |
| {55000, 12, 22, 18}, |
| {56000, 14, 45, 31}, |
| {56250, 16, 25, 15}, |
| {56750, 14, 25, 17}, |
| {57000, 16, 27, 16}, |
| {58000, 16, 43, 25}, |
| {58250, 16, 38, 22}, |
| {58750, 16, 40, 23}, |
| {59000, 14, 26, 17}, |
| {59341, 14, 40, 26}, |
| {59400, 16, 44, 25}, |
| {60000, 16, 32, 18}, |
| {60500, 12, 39, 29}, |
| {61000, 14, 49, 31}, |
| {62000, 14, 37, 23}, |
| {62250, 14, 42, 26}, |
| {63000, 12, 21, 15}, |
| {63500, 14, 28, 17}, |
| {64000, 12, 27, 19}, |
| {65000, 14, 32, 19}, |
| {65250, 12, 29, 20}, |
| {65500, 12, 32, 22}, |
| {66000, 12, 22, 15}, |
| {66667, 14, 38, 22}, |
| {66750, 10, 21, 17}, |
| {67000, 14, 33, 19}, |
| {67750, 14, 58, 33}, |
| {68000, 14, 30, 17}, |
| {68179, 14, 46, 26}, |
| {68250, 14, 46, 26}, |
| {69000, 12, 23, 15}, |
| {70000, 12, 28, 18}, |
| {71000, 12, 30, 19}, |
| {72000, 12, 24, 15}, |
| {73000, 10, 23, 17}, |
| {74000, 12, 23, 14}, |
| {74176, 8, 100, 91}, |
| {74250, 10, 22, 16}, |
| {74481, 12, 43, 26}, |
| {74500, 10, 29, 21}, |
| {75000, 12, 25, 15}, |
| {75250, 10, 39, 28}, |
| {76000, 12, 27, 16}, |
| {77000, 12, 53, 31}, |
| {78000, 12, 26, 15}, |
| {78750, 12, 28, 16}, |
| {79000, 10, 38, 26}, |
| {79500, 10, 28, 19}, |
| {80000, 12, 32, 18}, |
| {81000, 10, 21, 14}, |
| {81081, 6, 100, 111}, |
| {81624, 8, 29, 24}, |
| {82000, 8, 17, 14}, |
| {83000, 10, 40, 26}, |
| {83950, 10, 28, 18}, |
| {84000, 10, 28, 18}, |
| {84750, 6, 16, 17}, |
| {85000, 6, 17, 18}, |
| {85250, 10, 30, 19}, |
| {85750, 10, 27, 17}, |
| {86000, 10, 43, 27}, |
| {87000, 10, 29, 18}, |
| {88000, 10, 44, 27}, |
| {88500, 10, 41, 25}, |
| {89000, 10, 28, 17}, |
| {89012, 6, 90, 91}, |
| {89100, 10, 33, 20}, |
| {90000, 10, 25, 15}, |
| {91000, 10, 32, 19}, |
| {92000, 10, 46, 27}, |
| {93000, 10, 31, 18}, |
| {94000, 10, 40, 23}, |
| {94500, 10, 28, 16}, |
| {95000, 10, 44, 25}, |
| {95654, 10, 39, 22}, |
| {95750, 10, 39, 22}, |
| {96000, 10, 32, 18}, |
| {97000, 8, 23, 16}, |
| {97750, 8, 42, 29}, |
| {98000, 8, 45, 31}, |
| {99000, 8, 22, 15}, |
| {99750, 8, 34, 23}, |
| {100000, 6, 20, 18}, |
| {100500, 6, 19, 17}, |
| {101000, 6, 37, 33}, |
| {101250, 8, 21, 14}, |
| {102000, 6, 17, 15}, |
| {102250, 6, 25, 22}, |
| {103000, 8, 29, 19}, |
| {104000, 8, 37, 24}, |
| {105000, 8, 28, 18}, |
| {106000, 8, 22, 14}, |
| {107000, 8, 46, 29}, |
| {107214, 8, 27, 17}, |
| {108000, 8, 24, 15}, |
| {108108, 8, 173, 108}, |
| {109000, 6, 23, 19}, |
| {110000, 6, 22, 18}, |
| {110013, 6, 22, 18}, |
| {110250, 8, 49, 30}, |
| {110500, 8, 36, 22}, |
| {111000, 8, 23, 14}, |
| {111264, 8, 150, 91}, |
| {111375, 8, 33, 20}, |
| {112000, 8, 63, 38}, |
| {112500, 8, 25, 15}, |
| {113100, 8, 57, 34}, |
| {113309, 8, 42, 25}, |
| {114000, 8, 27, 16}, |
| {115000, 6, 23, 18}, |
| {116000, 8, 43, 25}, |
| {117000, 8, 26, 15}, |
| {117500, 8, 40, 23}, |
| {118000, 6, 38, 29}, |
| {119000, 8, 30, 17}, |
| {119500, 8, 46, 26}, |
| {119651, 8, 39, 22}, |
| {120000, 8, 32, 18}, |
| {121000, 6, 39, 29}, |
| {121250, 6, 31, 23}, |
| {121750, 6, 23, 17}, |
| {122000, 6, 42, 31}, |
| {122614, 6, 30, 22}, |
| {123000, 6, 41, 30}, |
| {123379, 6, 37, 27}, |
| {124000, 6, 51, 37}, |
| {125000, 6, 25, 18}, |
| {125250, 4, 13, 14}, |
| {125750, 4, 27, 29}, |
| {126000, 6, 21, 15}, |
| {127000, 6, 24, 17}, |
| {127250, 6, 41, 29}, |
| {128000, 6, 27, 19}, |
| {129000, 6, 43, 30}, |
| {129859, 4, 25, 26}, |
| {130000, 6, 26, 18}, |
| {130250, 6, 42, 29}, |
| {131000, 6, 32, 22}, |
| {131500, 6, 38, 26}, |
| {131850, 6, 41, 28}, |
| {132000, 6, 22, 15}, |
| {132750, 6, 28, 19}, |
| {133000, 6, 34, 23}, |
| {133330, 6, 37, 25}, |
| {134000, 6, 61, 41}, |
| {135000, 6, 21, 14}, |
| {135250, 6, 167, 111}, |
| {136000, 6, 62, 41}, |
| {137000, 6, 35, 23}, |
| {138000, 6, 23, 15}, |
| {138500, 6, 40, 26}, |
| {138750, 6, 37, 24}, |
| {139000, 6, 34, 22}, |
| {139050, 6, 34, 22}, |
| {139054, 6, 34, 22}, |
| {140000, 6, 28, 18}, |
| {141000, 6, 36, 23}, |
| {141500, 6, 22, 14}, |
| {142000, 6, 30, 19}, |
| {143000, 6, 27, 17}, |
| {143472, 4, 17, 16}, |
| {144000, 6, 24, 15}, |
| {145000, 6, 29, 18}, |
| {146000, 6, 47, 29}, |
| {146250, 6, 26, 16}, |
| {147000, 6, 49, 30}, |
| {147891, 6, 23, 14}, |
| {148000, 6, 23, 14}, |
| {148250, 6, 28, 17}, |
| {148352, 4, 100, 91}, |
| {148500, 6, 33, 20}, |
| {149000, 6, 48, 29}, |
| {150000, 6, 25, 15}, |
| {151000, 4, 19, 17}, |
| {152000, 6, 27, 16}, |
| {152280, 6, 44, 26}, |
| {153000, 6, 34, 20}, |
| {154000, 6, 53, 31}, |
| {155000, 6, 31, 18}, |
| {155250, 6, 50, 29}, |
| {155750, 6, 45, 26}, |
| {156000, 6, 26, 15}, |
| {157000, 6, 61, 35}, |
| {157500, 6, 28, 16}, |
| {158000, 6, 65, 37}, |
| {158250, 6, 44, 25}, |
| {159000, 6, 53, 30}, |
| {159500, 6, 39, 22}, |
| {160000, 6, 32, 18}, |
| {161000, 4, 31, 26}, |
| {162000, 4, 18, 15}, |
| {162162, 4, 131, 109}, |
| {162500, 4, 53, 44}, |
| {163000, 4, 29, 24}, |
| {164000, 4, 17, 14}, |
| {165000, 4, 22, 18}, |
| {166000, 4, 32, 26}, |
| {167000, 4, 26, 21}, |
| {168000, 4, 46, 37}, |
| {169000, 4, 104, 83}, |
| {169128, 4, 64, 51}, |
| {169500, 4, 39, 31}, |
| {170000, 4, 34, 27}, |
| {171000, 4, 19, 15}, |
| {172000, 4, 51, 40}, |
| {172750, 4, 32, 25}, |
| {172800, 4, 32, 25}, |
| {173000, 4, 41, 32}, |
| {174000, 4, 49, 38}, |
| {174787, 4, 22, 17}, |
| {175000, 4, 35, 27}, |
| {176000, 4, 30, 23}, |
| {177000, 4, 38, 29}, |
| {178000, 4, 29, 22}, |
| {178500, 4, 37, 28}, |
| {179000, 4, 53, 40}, |
| {179500, 4, 73, 55}, |
| {180000, 4, 20, 15}, |
| {181000, 4, 55, 41}, |
| {182000, 4, 31, 23}, |
| {183000, 4, 42, 31}, |
| {184000, 4, 30, 22}, |
| {184750, 4, 26, 19}, |
| {185000, 4, 37, 27}, |
| {186000, 4, 51, 37}, |
| {187000, 4, 36, 26}, |
| {188000, 4, 32, 23}, |
| {189000, 4, 21, 15}, |
| {190000, 4, 38, 27}, |
| {190960, 4, 41, 29}, |
| {191000, 4, 41, 29}, |
| {192000, 4, 27, 19}, |
| {192250, 4, 37, 26}, |
| {193000, 4, 20, 14}, |
| {193250, 4, 53, 37}, |
| {194000, 4, 23, 16}, |
| {194208, 4, 23, 16}, |
| {195000, 4, 26, 18}, |
| {196000, 4, 45, 31}, |
| {197000, 4, 35, 24}, |
| {197750, 4, 41, 28}, |
| {198000, 4, 22, 15}, |
| {198500, 4, 25, 17}, |
| {199000, 4, 28, 19}, |
| {200000, 4, 37, 25}, |
| {201000, 4, 61, 41}, |
| {202000, 4, 112, 75}, |
| {202500, 4, 21, 14}, |
| {203000, 4, 146, 97}, |
| {204000, 4, 62, 41}, |
| {204750, 4, 44, 29}, |
| {205000, 4, 38, 25}, |
| {206000, 4, 29, 19}, |
| {207000, 4, 23, 15}, |
| {207500, 4, 40, 26}, |
| {208000, 4, 37, 24}, |
| {208900, 4, 48, 31}, |
| {209000, 4, 48, 31}, |
| {209250, 4, 31, 20}, |
| {210000, 4, 28, 18}, |
| {211000, 4, 25, 16}, |
| {212000, 4, 22, 14}, |
| {213000, 4, 30, 19}, |
| {213750, 4, 38, 24}, |
| {214000, 4, 46, 29}, |
| {214750, 4, 35, 22}, |
| {215000, 4, 43, 27}, |
| {216000, 4, 24, 15}, |
| {217000, 4, 37, 23}, |
| {218000, 4, 42, 26}, |
| {218250, 4, 42, 26}, |
| {218750, 4, 34, 21}, |
| {219000, 4, 47, 29}, |
| {220000, 4, 44, 27}, |
| {220640, 4, 49, 30}, |
| {220750, 4, 36, 22}, |
| {221000, 4, 36, 22}, |
| {222000, 4, 23, 14}, |
| {222525, 4, 28, 17}, |
| {222750, 4, 33, 20}, |
| {227000, 4, 37, 22}, |
| {230250, 4, 29, 17}, |
| {233500, 4, 38, 22}, |
| {235000, 4, 40, 23}, |
| {238000, 4, 30, 17}, |
| {241500, 2, 17, 19}, |
| {245250, 2, 20, 22}, |
| {247750, 2, 22, 24}, |
| {253250, 2, 15, 16}, |
| {256250, 2, 18, 19}, |
| {262500, 2, 31, 32}, |
| {267250, 2, 66, 67}, |
| {268500, 2, 94, 95}, |
| {270000, 2, 14, 14}, |
| {272500, 2, 77, 76}, |
| {273750, 2, 57, 56}, |
| {280750, 2, 24, 23}, |
| {281250, 2, 23, 22}, |
| {286000, 2, 17, 16}, |
| {291750, 2, 26, 24}, |
| {296703, 2, 56, 51}, |
| {297000, 2, 22, 20}, |
| {298000, 2, 21, 19}, |
| }; |
| |
| void intel_ddi_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 drm_crtc *crtc = encoder->crtc; |
| struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
| 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; |
| u32 i; |
| |
| /* On Haswell, we need to enable the clocks and prepare DDI function to |
| * work in HDMI mode for this pipe. |
| */ |
| 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) |
| break; |
| |
| if (i == ARRAY_SIZE(wrpll_tmds_clock_table)) |
| i--; |
| |
| p = wrpll_tmds_clock_table[i].p; |
| n2 = wrpll_tmds_clock_table[i].n2; |
| r2 = wrpll_tmds_clock_table[i].r2; |
| |
| 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); |
| |
| /* Configure WR PLL 1, program the correct divider values for |
| * the desired frequency and wait for warmup */ |
| I915_WRITE(WRPLL_CTL1, |
| WRPLL_PLL_ENABLE | |
| WRPLL_PLL_SELECT_LCPLL_2700 | |
| WRPLL_DIVIDER_REFERENCE(r2) | |
| WRPLL_DIVIDER_FEEDBACK(n2) | |
| WRPLL_DIVIDER_POST(p)); |
| |
| udelay(20); |
| |
| /* Use WRPLL1 clock to drive the output to the port, and tell the pipe to use |
| * this port for connection. |
| */ |
| I915_WRITE(PORT_CLK_SEL(port), |
| PORT_CLK_SEL_WRPLL1); |
| |
| udelay(20); |
| |
| if (intel_hdmi->has_audio) { |
| /* 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 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); |
| } |
| |
| intel_hdmi->set_infoframes(encoder, adjusted_mode); |
| } |
| |
| static struct intel_encoder * |
| intel_ddi_get_crtc_encoder(struct drm_crtc *crtc) |
| { |
| struct drm_device *dev = crtc->dev; |
| struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
| struct intel_encoder *intel_encoder, *ret = NULL; |
| int num_encoders = 0; |
| |
| for_each_encoder_on_crtc(dev, crtc, intel_encoder) { |
| ret = intel_encoder; |
| num_encoders++; |
| } |
| |
| if (num_encoders != 1) |
| WARN(1, "%d encoders on crtc for pipe %d\n", num_encoders, |
| intel_crtc->pipe); |
| |
| BUG_ON(ret == NULL); |
| return ret; |
| } |
| |
| void intel_ddi_enable_pipe_func(struct drm_crtc *crtc) |
| { |
| struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
| struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc); |
| struct drm_i915_private *dev_priv = crtc->dev->dev_private; |
| enum pipe pipe = intel_crtc->pipe; |
| uint32_t temp; |
| |
| /* Enable PIPE_DDI_FUNC_CTL for the pipe to work in HDMI mode */ |
| temp = PIPE_DDI_FUNC_ENABLE; |
| |
| 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 (crtc->mode.flags & DRM_MODE_FLAG_PVSYNC) |
| temp |= PIPE_DDI_PVSYNC; |
| if (crtc->mode.flags & DRM_MODE_FLAG_PHSYNC) |
| temp |= PIPE_DDI_PHSYNC; |
| |
| if (intel_encoder->type == INTEL_OUTPUT_HDMI) { |
| struct intel_hdmi *intel_hdmi = |
| enc_to_intel_hdmi(&intel_encoder->base); |
| |
| if (intel_hdmi->has_hdmi_sink) |
| temp |= PIPE_DDI_MODE_SELECT_HDMI; |
| else |
| temp |= PIPE_DDI_MODE_SELECT_DVI; |
| |
| temp |= PIPE_DDI_SELECT_PORT(intel_hdmi->ddi_port); |
| } else if (intel_encoder->type == INTEL_OUTPUT_ANALOG) { |
| temp |= PIPE_DDI_MODE_SELECT_FDI; |
| temp |= PIPE_DDI_SELECT_PORT(PORT_E); |
| } else { |
| WARN(1, "Invalid encoder type %d for pipe %d\n", |
| intel_encoder->type, pipe); |
| } |
| |
| I915_WRITE(DDI_FUNC_CTL(pipe), temp); |
| } |
| |
| void intel_ddi_disable_pipe_func(struct drm_i915_private *dev_priv, |
| enum pipe pipe) |
| { |
| uint32_t reg = DDI_FUNC_CTL(pipe); |
| uint32_t val = I915_READ(reg); |
| |
| val &= ~(PIPE_DDI_FUNC_ENABLE | PIPE_DDI_PORT_MASK); |
| val |= PIPE_DDI_PORT_NONE; |
| I915_WRITE(reg, val); |
| } |
| |
| bool intel_ddi_get_hw_state(struct intel_encoder *encoder, |
| enum pipe *pipe) |
| { |
| 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); |
| 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_ddi_enable_pipe_clock(struct intel_crtc *intel_crtc) |
| { |
| struct drm_crtc *crtc = &intel_crtc->base; |
| struct drm_i915_private *dev_priv = crtc->dev->dev_private; |
| struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc); |
| enum port port = intel_ddi_get_encoder_port(intel_encoder); |
| |
| I915_WRITE(PIPE_CLK_SEL(intel_crtc->pipe), PIPE_CLK_SEL_PORT(port)); |
| } |
| |
| void intel_ddi_disable_pipe_clock(struct intel_crtc *intel_crtc) |
| { |
| struct drm_i915_private *dev_priv = intel_crtc->base.dev->dev_private; |
| |
| I915_WRITE(PIPE_CLK_SEL(intel_crtc->pipe), PIPE_CLK_SEL_DISABLED); |
| } |
| |
| 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)); |
| 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); |
| } |
| |
| 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); |
| } |
| |
| static int intel_ddi_get_cdclk_freq(struct drm_i915_private *dev_priv) |
| { |
| if (I915_READ(HSW_FUSE_STRAP) & HSW_CDCLK_LIMIT) |
| return 450; |
| else if ((I915_READ(LCPLL_CTL) & LCPLL_CLK_FREQ_MASK) == |
| LCPLL_CLK_FREQ_450) |
| return 450; |
| else |
| return 540; |
| } |
| |
| void intel_ddi_pll_init(struct drm_device *dev) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| uint32_t val = I915_READ(LCPLL_CTL); |
| |
| /* The LCPLL register should be turned on by the BIOS. For now let's |
| * just check its state and print errors in case something is wrong. |
| * Don't even try to turn it on. |
| */ |
| |
| DRM_DEBUG_KMS("CDCLK running at %dMHz\n", |
| intel_ddi_get_cdclk_freq(dev_priv)); |
| |
| if (val & LCPLL_CD_SOURCE_FCLK) |
| DRM_ERROR("CDCLK source is not LCPLL\n"); |
| |
| if (val & LCPLL_PLL_DISABLE) |
| DRM_ERROR("LCPLL is disabled\n"); |
| } |