diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_ddi.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ddi.c | 755 |
1 files changed, 755 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c new file mode 100644 index 000000000000..46d1e886c692 --- /dev/null +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -0,0 +1,755 @@ +/* + * 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 */ +}; + +/* 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); + I915_WRITE(PIPE_CLK_SEL(pipe), + PIPE_CLK_SEL_PORT(PORT_E)); + + 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); + + /* 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); + + /* Enable PIPE_DDI_FUNC_CTL for the pipe to work in FDI mode */ + temp = I915_READ(DDI_FUNC_CTL(pipe)); + temp &= ~PIPE_DDI_PORT_MASK; + temp |= PIPE_DDI_SELECT_PORT(PORT_E) | + PIPE_DDI_MODE_SELECT_FDI | + PIPE_DDI_FUNC_ENABLE | + PIPE_DDI_PORT_WIDTH_X2; + I915_WRITE(DDI_FUNC_CTL(pipe), + temp); + 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)); + 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 */ +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}, + {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}, + {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}, + {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, valid=0; + u32 temp, 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) { + p = wrpll_tmds_clock_table[i].p; + n2 = wrpll_tmds_clock_table[i].n2; + r2 = wrpll_tmds_clock_table[i].r2; + + DRM_DEBUG_KMS("WR PLL clock: found settings for %dKHz refresh rate: p=%d, n2=%d, r2=%d\n", + crtc->mode.clock, + p, n2, r2); + + valid = 1; + break; + } + } + + if (!valid) { + DRM_ERROR("Unable to find WR PLL clock settings for %dKHz refresh rate\n", + crtc->mode.clock); + return; + } + + /* Enable LCPLL if disabled */ + temp = I915_READ(LCPLL_CTL); + if (temp & LCPLL_PLL_DISABLE) + I915_WRITE(LCPLL_CTL, + temp & ~LCPLL_PLL_DISABLE); + + /* 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); + I915_WRITE(PIPE_CLK_SEL(pipe), + PIPE_CLK_SEL_PORT(port)); + + 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 not yet supported on DDI\n", + pipe_name(intel_crtc->pipe)); + } + + /* Enable PIPE_DDI_FUNC_CTL for the pipe to work in HDMI mode */ + temp = I915_READ(DDI_FUNC_CTL(pipe)); + temp &= ~PIPE_DDI_PORT_MASK; + temp &= ~PIPE_DDI_BPC_12; + temp |= PIPE_DDI_SELECT_PORT(port) | + PIPE_DDI_MODE_SELECT_HDMI | + ((intel_crtc->bpp > 24) ? + PIPE_DDI_BPC_12 : + PIPE_DDI_BPC_8) | + PIPE_DDI_FUNC_ENABLE; + + I915_WRITE(DDI_FUNC_CTL(pipe), temp); + + intel_hdmi_set_avi_infoframe(encoder, adjusted_mode); + intel_hdmi_set_spd_infoframe(encoder); +} + +void intel_ddi_dpms(struct drm_encoder *encoder, int mode) +{ + struct drm_device *dev = encoder->dev; + struct drm_i915_private *dev_priv = dev->dev_private; + struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder); + int port = intel_hdmi->ddi_port; + u32 temp; + + temp = I915_READ(DDI_BUF_CTL(port)); + + if (mode != DRM_MODE_DPMS_ON) { + temp &= ~DDI_BUF_CTL_ENABLE; + } else { + 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); +} |