| 1 | /* | 
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| 2 | * Copyright © 2018 Intel Corporation | 
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| 3 | * | 
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| 4 | * Permission is hereby granted, free of charge, to any person obtaining a | 
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| 5 | * copy of this software and associated documentation files (the "Software"), | 
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| 6 | * to deal in the Software without restriction, including without limitation | 
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| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | 
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| 8 | * and/or sell copies of the Software, and to permit persons to whom the | 
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| 9 | * Software is furnished to do so, subject to the following conditions: | 
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| 10 | * | 
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| 11 | * The above copyright notice and this permission notice (including the next | 
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| 12 | * paragraph) shall be included in all copies or substantial portions of the | 
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| 13 | * Software. | 
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| 14 | * | 
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| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | 
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| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | 
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| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL | 
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| 18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | 
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| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | 
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| 20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | 
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| 21 | * DEALINGS IN THE SOFTWARE. | 
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| 22 | * | 
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| 23 | * Authors: | 
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| 24 | *   Madhav Chauhan <madhav.chauhan@intel.com> | 
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| 25 | *   Jani Nikula <jani.nikula@intel.com> | 
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| 26 | */ | 
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| 27 |  | 
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| 28 | #include <linux/iopoll.h> | 
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| 29 |  | 
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| 30 | #include <drm/display/drm_dsc_helper.h> | 
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| 31 | #include <drm/drm_atomic_helper.h> | 
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| 32 | #include <drm/drm_fixed.h> | 
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| 33 | #include <drm/drm_mipi_dsi.h> | 
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| 34 | #include <drm/drm_print.h> | 
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| 35 | #include <drm/drm_probe_helper.h> | 
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| 36 |  | 
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| 37 | #include "i915_reg.h" | 
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| 38 | #include "i915_utils.h" | 
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| 39 | #include "icl_dsi.h" | 
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| 40 | #include "icl_dsi_regs.h" | 
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| 41 | #include "intel_atomic.h" | 
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| 42 | #include "intel_backlight.h" | 
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| 43 | #include "intel_backlight_regs.h" | 
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| 44 | #include "intel_combo_phy.h" | 
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| 45 | #include "intel_combo_phy_regs.h" | 
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| 46 | #include "intel_connector.h" | 
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| 47 | #include "intel_crtc.h" | 
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| 48 | #include "intel_ddi.h" | 
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| 49 | #include "intel_de.h" | 
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| 50 | #include "intel_display_regs.h" | 
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| 51 | #include "intel_dsi.h" | 
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| 52 | #include "intel_dsi_vbt.h" | 
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| 53 | #include "intel_panel.h" | 
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| 54 | #include "intel_pfit.h" | 
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| 55 | #include "intel_vdsc.h" | 
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| 56 | #include "intel_vdsc_regs.h" | 
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| 57 | #include "skl_scaler.h" | 
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| 58 | #include "skl_universal_plane.h" | 
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| 59 |  | 
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| 60 | static int (struct intel_display *display, | 
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| 61 | enum transcoder dsi_trans) | 
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| 62 | { | 
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| 63 | return (intel_de_read(display, DSI_CMD_TXCTL(dsi_trans)) & FREE_HEADER_CREDIT_MASK) | 
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| 64 | >> FREE_HEADER_CREDIT_SHIFT; | 
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| 65 | } | 
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| 66 |  | 
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| 67 | static int payload_credits_available(struct intel_display *display, | 
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| 68 | enum transcoder dsi_trans) | 
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| 69 | { | 
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| 70 | return (intel_de_read(display, DSI_CMD_TXCTL(dsi_trans)) & FREE_PLOAD_CREDIT_MASK) | 
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| 71 | >> FREE_PLOAD_CREDIT_SHIFT; | 
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| 72 | } | 
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| 73 |  | 
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| 74 | static bool (struct intel_display *display, | 
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| 75 | enum transcoder dsi_trans, int hdr_credit) | 
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| 76 | { | 
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| 77 | int ret, available; | 
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| 78 |  | 
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| 79 | ret = poll_timeout_us(available = header_credits_available(display, dsi_trans), | 
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| 80 | available >= hdr_credit, | 
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| 81 | 10, 100, false); | 
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| 82 | if (ret) { | 
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| 83 | drm_err(display->drm, "DSI header credits not released\n"); | 
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| 84 | return false; | 
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| 85 | } | 
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| 86 |  | 
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| 87 | return true; | 
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| 88 | } | 
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| 89 |  | 
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| 90 | static bool wait_for_payload_credits(struct intel_display *display, | 
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| 91 | enum transcoder dsi_trans, int payld_credit) | 
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| 92 | { | 
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| 93 | int ret, available; | 
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| 94 |  | 
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| 95 | ret = poll_timeout_us(available = payload_credits_available(display, dsi_trans), | 
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| 96 | available >= payld_credit, | 
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| 97 | 10, 100, false); | 
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| 98 | if (ret) { | 
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| 99 | drm_err(display->drm, "DSI payload credits not released\n"); | 
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| 100 | return false; | 
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| 101 | } | 
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| 102 |  | 
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| 103 | return true; | 
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| 104 | } | 
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| 105 |  | 
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| 106 | static enum transcoder dsi_port_to_transcoder(enum port port) | 
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| 107 | { | 
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| 108 | if (port == PORT_A) | 
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| 109 | return TRANSCODER_DSI_0; | 
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| 110 | else | 
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| 111 | return TRANSCODER_DSI_1; | 
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| 112 | } | 
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| 113 |  | 
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| 114 | static void wait_for_cmds_dispatched_to_panel(struct intel_encoder *encoder) | 
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| 115 | { | 
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| 116 | struct intel_display *display = to_intel_display(encoder); | 
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| 117 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
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| 118 | struct mipi_dsi_device *dsi; | 
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| 119 | enum port port; | 
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| 120 | enum transcoder dsi_trans; | 
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| 121 | int ret; | 
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| 122 |  | 
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| 123 | /* wait for header/payload credits to be released */ | 
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| 124 | for_each_dsi_port(port, intel_dsi->ports) { | 
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| 125 | dsi_trans = dsi_port_to_transcoder(port); | 
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| 126 | wait_for_header_credits(display, dsi_trans, MAX_HEADER_CREDIT); | 
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| 127 | wait_for_payload_credits(display, dsi_trans, MAX_PLOAD_CREDIT); | 
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| 128 | } | 
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| 129 |  | 
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| 130 | /* send nop DCS command */ | 
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| 131 | for_each_dsi_port(port, intel_dsi->ports) { | 
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| 132 | dsi = intel_dsi->dsi_hosts[port]->device; | 
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| 133 | dsi->mode_flags |= MIPI_DSI_MODE_LPM; | 
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| 134 | dsi->channel = 0; | 
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| 135 | ret = mipi_dsi_dcs_nop(dsi); | 
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| 136 | if (ret < 0) | 
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| 137 | drm_err(display->drm, | 
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| 138 | "error sending DCS NOP command\n"); | 
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| 139 | } | 
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| 140 |  | 
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| 141 | /* wait for header credits to be released */ | 
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| 142 | for_each_dsi_port(port, intel_dsi->ports) { | 
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| 143 | dsi_trans = dsi_port_to_transcoder(port); | 
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| 144 | wait_for_header_credits(display, dsi_trans, MAX_HEADER_CREDIT); | 
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| 145 | } | 
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| 146 |  | 
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| 147 | /* wait for LP TX in progress bit to be cleared */ | 
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| 148 | for_each_dsi_port(port, intel_dsi->ports) { | 
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| 149 | dsi_trans = dsi_port_to_transcoder(port); | 
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| 150 |  | 
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| 151 | ret = intel_de_wait_custom(display, DSI_LP_MSG(dsi_trans), | 
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| 152 | LPTX_IN_PROGRESS, value: 0, | 
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| 153 | fast_timeout_us: 20, slow_timeout_ms: 0, NULL); | 
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| 154 | if (ret) | 
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| 155 | drm_err(display->drm, "LPTX bit not cleared\n"); | 
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| 156 | } | 
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| 157 | } | 
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| 158 |  | 
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| 159 | static int dsi_send_pkt_payld(struct intel_dsi_host *host, | 
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| 160 | const struct mipi_dsi_packet *packet) | 
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| 161 | { | 
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| 162 | struct intel_dsi *intel_dsi = host->intel_dsi; | 
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| 163 | struct intel_display *display = to_intel_display(&intel_dsi->base); | 
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| 164 | enum transcoder dsi_trans = dsi_port_to_transcoder(port: host->port); | 
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| 165 | const u8 *data = packet->payload; | 
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| 166 | u32 len = packet->payload_length; | 
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| 167 | int i, j; | 
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| 168 |  | 
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| 169 | /* payload queue can accept *256 bytes*, check limit */ | 
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| 170 | if (len > MAX_PLOAD_CREDIT * 4) { | 
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| 171 | drm_err(display->drm, "payload size exceeds max queue limit\n"); | 
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| 172 | return -EINVAL; | 
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| 173 | } | 
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| 174 |  | 
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| 175 | for (i = 0; i < len; i += 4) { | 
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| 176 | u32 tmp = 0; | 
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| 177 |  | 
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| 178 | if (!wait_for_payload_credits(display, dsi_trans, payld_credit: 1)) | 
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| 179 | return -EBUSY; | 
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| 180 |  | 
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| 181 | for (j = 0; j < min_t(u32, len - i, 4); j++) | 
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| 182 | tmp |= *data++ << 8 * j; | 
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| 183 |  | 
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| 184 | intel_de_write(display, DSI_CMD_TXPYLD(dsi_trans), val: tmp); | 
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| 185 | } | 
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| 186 |  | 
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| 187 | return 0; | 
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| 188 | } | 
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| 189 |  | 
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| 190 | static int dsi_send_pkt_hdr(struct intel_dsi_host *host, | 
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| 191 | const struct mipi_dsi_packet *packet, | 
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| 192 | bool enable_lpdt) | 
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| 193 | { | 
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| 194 | struct intel_dsi *intel_dsi = host->intel_dsi; | 
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| 195 | struct intel_display *display = to_intel_display(&intel_dsi->base); | 
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| 196 | enum transcoder dsi_trans = dsi_port_to_transcoder(port: host->port); | 
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| 197 | u32 tmp; | 
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| 198 |  | 
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| 199 | if (!wait_for_header_credits(display, dsi_trans, hdr_credit: 1)) | 
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| 200 | return -EBUSY; | 
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| 201 |  | 
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| 202 | tmp = intel_de_read(display, DSI_CMD_TXHDR(dsi_trans)); | 
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| 203 |  | 
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| 204 | if (packet->payload) | 
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| 205 | tmp |= PAYLOAD_PRESENT; | 
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| 206 | else | 
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| 207 | tmp &= ~PAYLOAD_PRESENT; | 
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| 208 |  | 
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| 209 | tmp &= ~(VBLANK_FENCE | LP_DATA_TRANSFER | PIPELINE_FLUSH); | 
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| 210 |  | 
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| 211 | if (enable_lpdt) | 
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| 212 | tmp |= LP_DATA_TRANSFER; | 
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| 213 | else | 
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| 214 | tmp |= PIPELINE_FLUSH; | 
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| 215 |  | 
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| 216 | tmp &= ~(PARAM_WC_MASK | VC_MASK | DT_MASK); | 
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| 217 | tmp |= ((packet->header[0] & VC_MASK) << VC_SHIFT); | 
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| 218 | tmp |= ((packet->header[0] & DT_MASK) << DT_SHIFT); | 
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| 219 | tmp |= (packet->header[1] << PARAM_WC_LOWER_SHIFT); | 
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| 220 | tmp |= (packet->header[2] << PARAM_WC_UPPER_SHIFT); | 
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| 221 | intel_de_write(display, DSI_CMD_TXHDR(dsi_trans), val: tmp); | 
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| 222 |  | 
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| 223 | return 0; | 
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| 224 | } | 
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| 225 |  | 
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| 226 | void icl_dsi_frame_update(struct intel_crtc_state *crtc_state) | 
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| 227 | { | 
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| 228 | struct intel_display *display = to_intel_display(crtc_state); | 
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| 229 | u32 mode_flags; | 
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| 230 | enum port port; | 
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| 231 |  | 
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| 232 | mode_flags = crtc_state->mode_flags; | 
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| 233 |  | 
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| 234 | /* | 
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| 235 | * case 1 also covers dual link | 
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| 236 | * In case of dual link, frame update should be set on | 
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| 237 | * DSI_0 | 
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| 238 | */ | 
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| 239 | if (mode_flags & I915_MODE_FLAG_DSI_USE_TE0) | 
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| 240 | port = PORT_A; | 
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| 241 | else if (mode_flags & I915_MODE_FLAG_DSI_USE_TE1) | 
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| 242 | port = PORT_B; | 
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| 243 | else | 
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| 244 | return; | 
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| 245 |  | 
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| 246 | intel_de_rmw(display, DSI_CMD_FRMCTL(port), clear: 0, | 
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| 247 | DSI_FRAME_UPDATE_REQUEST); | 
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| 248 | } | 
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| 249 |  | 
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| 250 | static void dsi_program_swing_and_deemphasis(struct intel_encoder *encoder) | 
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| 251 | { | 
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| 252 | struct intel_display *display = to_intel_display(encoder); | 
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| 253 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
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| 254 | enum phy phy; | 
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| 255 | u32 tmp, mask, val; | 
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| 256 | int lane; | 
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| 257 |  | 
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| 258 | for_each_dsi_phy(phy, intel_dsi->phys) { | 
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| 259 | /* | 
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| 260 | * Program voltage swing and pre-emphasis level values as per | 
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| 261 | * table in BSPEC under DDI buffer programming. | 
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| 262 | */ | 
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| 263 | mask = SCALING_MODE_SEL_MASK | RTERM_SELECT_MASK; | 
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| 264 | val = SCALING_MODE_SEL(0x2) | TAP2_DISABLE | TAP3_DISABLE | | 
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| 265 | RTERM_SELECT(0x6); | 
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| 266 | tmp = intel_de_read(display, ICL_PORT_TX_DW5_LN(0, phy)); | 
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| 267 | tmp &= ~mask; | 
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| 268 | tmp |= val; | 
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| 269 | intel_de_write(display, ICL_PORT_TX_DW5_GRP(phy), val: tmp); | 
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| 270 | intel_de_rmw(display, ICL_PORT_TX_DW5_AUX(phy), clear: mask, set: val); | 
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| 271 |  | 
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| 272 | mask = SWING_SEL_LOWER_MASK | SWING_SEL_UPPER_MASK | | 
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| 273 | RCOMP_SCALAR_MASK; | 
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| 274 | val = SWING_SEL_UPPER(0x2) | SWING_SEL_LOWER(0x2) | | 
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| 275 | RCOMP_SCALAR(0x98); | 
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| 276 | tmp = intel_de_read(display, ICL_PORT_TX_DW2_LN(0, phy)); | 
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| 277 | tmp &= ~mask; | 
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| 278 | tmp |= val; | 
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| 279 | intel_de_write(display, ICL_PORT_TX_DW2_GRP(phy), val: tmp); | 
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| 280 | intel_de_rmw(display, ICL_PORT_TX_DW2_AUX(phy), clear: mask, set: val); | 
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| 281 |  | 
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| 282 | mask = POST_CURSOR_1_MASK | POST_CURSOR_2_MASK | | 
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| 283 | CURSOR_COEFF_MASK; | 
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| 284 | val = POST_CURSOR_1(0x0) | POST_CURSOR_2(0x0) | | 
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| 285 | CURSOR_COEFF(0x3f); | 
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| 286 | intel_de_rmw(display, ICL_PORT_TX_DW4_AUX(phy), clear: mask, set: val); | 
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| 287 |  | 
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| 288 | /* Bspec: must not use GRP register for write */ | 
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| 289 | for (lane = 0; lane <= 3; lane++) | 
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| 290 | intel_de_rmw(display, ICL_PORT_TX_DW4_LN(lane, phy), | 
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| 291 | clear: mask, set: val); | 
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| 292 | } | 
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| 293 | } | 
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| 294 |  | 
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| 295 | static void configure_dual_link_mode(struct intel_encoder *encoder, | 
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| 296 | const struct intel_crtc_state *pipe_config) | 
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| 297 | { | 
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| 298 | struct intel_display *display = to_intel_display(encoder); | 
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| 299 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
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| 300 | i915_reg_t dss_ctl1_reg, dss_ctl2_reg; | 
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| 301 | u32 dss_ctl1; | 
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| 302 |  | 
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| 303 | /* FIXME: Move all DSS handling to intel_vdsc.c */ | 
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| 304 | if (DISPLAY_VER(display) >= 12) { | 
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| 305 | struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc); | 
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| 306 |  | 
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| 307 | dss_ctl1_reg = ICL_PIPE_DSS_CTL1(crtc->pipe); | 
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| 308 | dss_ctl2_reg = ICL_PIPE_DSS_CTL2(crtc->pipe); | 
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| 309 | } else { | 
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| 310 | dss_ctl1_reg = DSS_CTL1; | 
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| 311 | dss_ctl2_reg = DSS_CTL2; | 
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| 312 | } | 
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| 313 |  | 
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| 314 | dss_ctl1 = intel_de_read(display, reg: dss_ctl1_reg); | 
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| 315 | dss_ctl1 |= SPLITTER_ENABLE; | 
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| 316 | dss_ctl1 &= ~OVERLAP_PIXELS_MASK; | 
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| 317 | dss_ctl1 |= OVERLAP_PIXELS(intel_dsi->pixel_overlap); | 
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| 318 |  | 
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| 319 | if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK) { | 
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| 320 | const struct drm_display_mode *adjusted_mode = | 
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| 321 | &pipe_config->hw.adjusted_mode; | 
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| 322 | u16 hactive = adjusted_mode->crtc_hdisplay; | 
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| 323 | u16 dl_buffer_depth; | 
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| 324 |  | 
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| 325 | dss_ctl1 &= ~DUAL_LINK_MODE_INTERLEAVE; | 
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| 326 | dl_buffer_depth = hactive / 2 + intel_dsi->pixel_overlap; | 
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| 327 |  | 
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| 328 | if (dl_buffer_depth > MAX_DL_BUFFER_TARGET_DEPTH) | 
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| 329 | drm_err(display->drm, | 
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| 330 | "DL buffer depth exceed max value\n"); | 
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| 331 |  | 
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| 332 | dss_ctl1 &= ~LEFT_DL_BUF_TARGET_DEPTH_MASK; | 
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| 333 | dss_ctl1 |= LEFT_DL_BUF_TARGET_DEPTH(dl_buffer_depth); | 
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| 334 | intel_de_rmw(display, reg: dss_ctl2_reg, RIGHT_DL_BUF_TARGET_DEPTH_MASK, | 
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| 335 | RIGHT_DL_BUF_TARGET_DEPTH(dl_buffer_depth)); | 
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| 336 | } else { | 
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| 337 | /* Interleave */ | 
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| 338 | dss_ctl1 |= DUAL_LINK_MODE_INTERLEAVE; | 
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| 339 | } | 
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| 340 |  | 
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| 341 | intel_de_write(display, reg: dss_ctl1_reg, val: dss_ctl1); | 
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| 342 | } | 
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| 343 |  | 
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| 344 | /* aka DSI 8X clock */ | 
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| 345 | static int afe_clk(struct intel_encoder *encoder, | 
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| 346 | const struct intel_crtc_state *crtc_state) | 
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| 347 | { | 
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| 348 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
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| 349 | int bpp; | 
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| 350 |  | 
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| 351 | if (crtc_state->dsc.compression_enable) | 
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| 352 | bpp = fxp_q4_to_int(val_q4: crtc_state->dsc.compressed_bpp_x16); | 
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| 353 | else | 
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| 354 | bpp = mipi_dsi_pixel_format_to_bpp(fmt: intel_dsi->pixel_format); | 
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| 355 |  | 
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| 356 | return DIV_ROUND_CLOSEST(intel_dsi->pclk * bpp, intel_dsi->lane_count); | 
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| 357 | } | 
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| 358 |  | 
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| 359 | static void gen11_dsi_program_esc_clk_div(struct intel_encoder *encoder, | 
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| 360 | const struct intel_crtc_state *crtc_state) | 
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| 361 | { | 
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| 362 | struct intel_display *display = to_intel_display(encoder); | 
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| 363 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
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| 364 | enum port port; | 
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| 365 | int afe_clk_khz; | 
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| 366 | int theo_word_clk, act_word_clk; | 
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| 367 | u32 esc_clk_div_m, esc_clk_div_m_phy; | 
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| 368 |  | 
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| 369 | afe_clk_khz = afe_clk(encoder, crtc_state); | 
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| 370 |  | 
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| 371 | if (display->platform.alderlake_s || display->platform.alderlake_p) { | 
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| 372 | theo_word_clk = DIV_ROUND_UP(afe_clk_khz, 8 * DSI_MAX_ESC_CLK); | 
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| 373 | act_word_clk = max(3, theo_word_clk + (theo_word_clk + 1) % 2); | 
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| 374 | esc_clk_div_m = act_word_clk * 8; | 
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| 375 | esc_clk_div_m_phy = (act_word_clk - 1) / 2; | 
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| 376 | } else { | 
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| 377 | esc_clk_div_m = DIV_ROUND_UP(afe_clk_khz, DSI_MAX_ESC_CLK); | 
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| 378 | } | 
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| 379 |  | 
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| 380 | for_each_dsi_port(port, intel_dsi->ports) { | 
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| 381 | intel_de_write(display, ICL_DSI_ESC_CLK_DIV(port), | 
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| 382 | val: esc_clk_div_m & ICL_ESC_CLK_DIV_MASK); | 
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| 383 | intel_de_posting_read(display, ICL_DSI_ESC_CLK_DIV(port)); | 
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| 384 | } | 
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| 385 |  | 
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| 386 | for_each_dsi_port(port, intel_dsi->ports) { | 
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| 387 | intel_de_write(display, ICL_DPHY_ESC_CLK_DIV(port), | 
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| 388 | val: esc_clk_div_m & ICL_ESC_CLK_DIV_MASK); | 
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| 389 | intel_de_posting_read(display, ICL_DPHY_ESC_CLK_DIV(port)); | 
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| 390 | } | 
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| 391 |  | 
|---|
| 392 | if (display->platform.alderlake_s || display->platform.alderlake_p) { | 
|---|
| 393 | for_each_dsi_port(port, intel_dsi->ports) { | 
|---|
| 394 | intel_de_write(display, ADL_MIPIO_DW(port, 8), | 
|---|
| 395 | val: esc_clk_div_m_phy & TX_ESC_CLK_DIV_PHY); | 
|---|
| 396 | intel_de_posting_read(display, ADL_MIPIO_DW(port, 8)); | 
|---|
| 397 | } | 
|---|
| 398 | } | 
|---|
| 399 | } | 
|---|
| 400 |  | 
|---|
| 401 | static void get_dsi_io_power_domains(struct intel_dsi *intel_dsi) | 
|---|
| 402 | { | 
|---|
| 403 | struct intel_display *display = to_intel_display(&intel_dsi->base); | 
|---|
| 404 | enum port port; | 
|---|
| 405 |  | 
|---|
| 406 | for_each_dsi_port(port, intel_dsi->ports) { | 
|---|
| 407 | drm_WARN_ON(display->drm, intel_dsi->io_wakeref[port]); | 
|---|
| 408 | intel_dsi->io_wakeref[port] = | 
|---|
| 409 | intel_display_power_get(display, | 
|---|
| 410 | domain: port == PORT_A ? | 
|---|
| 411 | POWER_DOMAIN_PORT_DDI_IO_A : | 
|---|
| 412 | POWER_DOMAIN_PORT_DDI_IO_B); | 
|---|
| 413 | } | 
|---|
| 414 | } | 
|---|
| 415 |  | 
|---|
| 416 | static void gen11_dsi_enable_io_power(struct intel_encoder *encoder) | 
|---|
| 417 | { | 
|---|
| 418 | struct intel_display *display = to_intel_display(encoder); | 
|---|
| 419 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
|---|
| 420 | enum port port; | 
|---|
| 421 |  | 
|---|
| 422 | for_each_dsi_port(port, intel_dsi->ports) | 
|---|
| 423 | intel_de_rmw(display, ICL_DSI_IO_MODECTL(port), | 
|---|
| 424 | clear: 0, COMBO_PHY_MODE_DSI); | 
|---|
| 425 |  | 
|---|
| 426 | get_dsi_io_power_domains(intel_dsi); | 
|---|
| 427 | } | 
|---|
| 428 |  | 
|---|
| 429 | static void gen11_dsi_power_up_lanes(struct intel_encoder *encoder) | 
|---|
| 430 | { | 
|---|
| 431 | struct intel_display *display = to_intel_display(encoder); | 
|---|
| 432 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
|---|
| 433 | enum phy phy; | 
|---|
| 434 |  | 
|---|
| 435 | for_each_dsi_phy(phy, intel_dsi->phys) | 
|---|
| 436 | intel_combo_phy_power_up_lanes(display, phy, is_dsi: true, | 
|---|
| 437 | lane_count: intel_dsi->lane_count, lane_reversal: false); | 
|---|
| 438 | } | 
|---|
| 439 |  | 
|---|
| 440 | static void gen11_dsi_config_phy_lanes_sequence(struct intel_encoder *encoder) | 
|---|
| 441 | { | 
|---|
| 442 | struct intel_display *display = to_intel_display(encoder); | 
|---|
| 443 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
|---|
| 444 | enum phy phy; | 
|---|
| 445 | u32 tmp; | 
|---|
| 446 | int lane; | 
|---|
| 447 |  | 
|---|
| 448 | /* Step 4b(i) set loadgen select for transmit and aux lanes */ | 
|---|
| 449 | for_each_dsi_phy(phy, intel_dsi->phys) { | 
|---|
| 450 | intel_de_rmw(display, ICL_PORT_TX_DW4_AUX(phy), | 
|---|
| 451 | LOADGEN_SELECT, set: 0); | 
|---|
| 452 | for (lane = 0; lane <= 3; lane++) | 
|---|
| 453 | intel_de_rmw(display, ICL_PORT_TX_DW4_LN(lane, phy), | 
|---|
| 454 | LOADGEN_SELECT, set: lane != 2 ? LOADGEN_SELECT : 0); | 
|---|
| 455 | } | 
|---|
| 456 |  | 
|---|
| 457 | /* Step 4b(ii) set latency optimization for transmit and aux lanes */ | 
|---|
| 458 | for_each_dsi_phy(phy, intel_dsi->phys) { | 
|---|
| 459 | intel_de_rmw(display, ICL_PORT_TX_DW2_AUX(phy), | 
|---|
| 460 | FRC_LATENCY_OPTIM_MASK, FRC_LATENCY_OPTIM_VAL(0x5)); | 
|---|
| 461 | tmp = intel_de_read(display, ICL_PORT_TX_DW2_LN(0, phy)); | 
|---|
| 462 | tmp &= ~FRC_LATENCY_OPTIM_MASK; | 
|---|
| 463 | tmp |= FRC_LATENCY_OPTIM_VAL(0x5); | 
|---|
| 464 | intel_de_write(display, ICL_PORT_TX_DW2_GRP(phy), val: tmp); | 
|---|
| 465 |  | 
|---|
| 466 | /* For EHL, TGL, set latency optimization for PCS_DW1 lanes */ | 
|---|
| 467 | if (display->platform.jasperlake || display->platform.elkhartlake || | 
|---|
| 468 | (DISPLAY_VER(display) >= 12)) { | 
|---|
| 469 | intel_de_rmw(display, ICL_PORT_PCS_DW1_AUX(phy), | 
|---|
| 470 | LATENCY_OPTIM_MASK, LATENCY_OPTIM_VAL(0)); | 
|---|
| 471 |  | 
|---|
| 472 | tmp = intel_de_read(display, | 
|---|
| 473 | ICL_PORT_PCS_DW1_LN(0, phy)); | 
|---|
| 474 | tmp &= ~LATENCY_OPTIM_MASK; | 
|---|
| 475 | tmp |= LATENCY_OPTIM_VAL(0x1); | 
|---|
| 476 | intel_de_write(display, ICL_PORT_PCS_DW1_GRP(phy), | 
|---|
| 477 | val: tmp); | 
|---|
| 478 | } | 
|---|
| 479 | } | 
|---|
| 480 |  | 
|---|
| 481 | } | 
|---|
| 482 |  | 
|---|
| 483 | static void gen11_dsi_voltage_swing_program_seq(struct intel_encoder *encoder) | 
|---|
| 484 | { | 
|---|
| 485 | struct intel_display *display = to_intel_display(encoder); | 
|---|
| 486 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
|---|
| 487 | u32 tmp; | 
|---|
| 488 | enum phy phy; | 
|---|
| 489 |  | 
|---|
| 490 | /* clear common keeper enable bit */ | 
|---|
| 491 | for_each_dsi_phy(phy, intel_dsi->phys) { | 
|---|
| 492 | tmp = intel_de_read(display, ICL_PORT_PCS_DW1_LN(0, phy)); | 
|---|
| 493 | tmp &= ~COMMON_KEEPER_EN; | 
|---|
| 494 | intel_de_write(display, ICL_PORT_PCS_DW1_GRP(phy), val: tmp); | 
|---|
| 495 | intel_de_rmw(display, ICL_PORT_PCS_DW1_AUX(phy), COMMON_KEEPER_EN, set: 0); | 
|---|
| 496 | } | 
|---|
| 497 |  | 
|---|
| 498 | /* | 
|---|
| 499 | * Set SUS Clock Config bitfield to 11b | 
|---|
| 500 | * Note: loadgen select program is done | 
|---|
| 501 | * as part of lane phy sequence configuration | 
|---|
| 502 | */ | 
|---|
| 503 | for_each_dsi_phy(phy, intel_dsi->phys) | 
|---|
| 504 | intel_de_rmw(display, ICL_PORT_CL_DW5(phy), clear: 0, | 
|---|
| 505 | SUS_CLOCK_CONFIG); | 
|---|
| 506 |  | 
|---|
| 507 | /* Clear training enable to change swing values */ | 
|---|
| 508 | for_each_dsi_phy(phy, intel_dsi->phys) { | 
|---|
| 509 | tmp = intel_de_read(display, ICL_PORT_TX_DW5_LN(0, phy)); | 
|---|
| 510 | tmp &= ~TX_TRAINING_EN; | 
|---|
| 511 | intel_de_write(display, ICL_PORT_TX_DW5_GRP(phy), val: tmp); | 
|---|
| 512 | intel_de_rmw(display, ICL_PORT_TX_DW5_AUX(phy), TX_TRAINING_EN, set: 0); | 
|---|
| 513 | } | 
|---|
| 514 |  | 
|---|
| 515 | /* Program swing and de-emphasis */ | 
|---|
| 516 | dsi_program_swing_and_deemphasis(encoder); | 
|---|
| 517 |  | 
|---|
| 518 | /* Set training enable to trigger update */ | 
|---|
| 519 | for_each_dsi_phy(phy, intel_dsi->phys) { | 
|---|
| 520 | tmp = intel_de_read(display, ICL_PORT_TX_DW5_LN(0, phy)); | 
|---|
| 521 | tmp |= TX_TRAINING_EN; | 
|---|
| 522 | intel_de_write(display, ICL_PORT_TX_DW5_GRP(phy), val: tmp); | 
|---|
| 523 | intel_de_rmw(display, ICL_PORT_TX_DW5_AUX(phy), clear: 0, TX_TRAINING_EN); | 
|---|
| 524 | } | 
|---|
| 525 | } | 
|---|
| 526 |  | 
|---|
| 527 | static void gen11_dsi_enable_ddi_buffer(struct intel_encoder *encoder) | 
|---|
| 528 | { | 
|---|
| 529 | struct intel_display *display = to_intel_display(encoder); | 
|---|
| 530 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
|---|
| 531 | enum port port; | 
|---|
| 532 | int ret; | 
|---|
| 533 |  | 
|---|
| 534 | for_each_dsi_port(port, intel_dsi->ports) { | 
|---|
| 535 | intel_de_rmw(display, DDI_BUF_CTL(port), clear: 0, DDI_BUF_CTL_ENABLE); | 
|---|
| 536 |  | 
|---|
| 537 | ret = intel_de_wait_custom(display, DDI_BUF_CTL(port), | 
|---|
| 538 | DDI_BUF_IS_IDLE, value: 0, | 
|---|
| 539 | fast_timeout_us: 500, slow_timeout_ms: 0, NULL); | 
|---|
| 540 | if (ret) | 
|---|
| 541 | drm_err(display->drm, "DDI port:%c buffer idle\n", | 
|---|
| 542 | port_name(port)); | 
|---|
| 543 | } | 
|---|
| 544 | } | 
|---|
| 545 |  | 
|---|
| 546 | static void | 
|---|
| 547 | gen11_dsi_setup_dphy_timings(struct intel_encoder *encoder, | 
|---|
| 548 | const struct intel_crtc_state *crtc_state) | 
|---|
| 549 | { | 
|---|
| 550 | struct intel_display *display = to_intel_display(encoder); | 
|---|
| 551 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
|---|
| 552 | enum port port; | 
|---|
| 553 | enum phy phy; | 
|---|
| 554 |  | 
|---|
| 555 | /* Program DPHY clock lanes timings */ | 
|---|
| 556 | for_each_dsi_port(port, intel_dsi->ports) | 
|---|
| 557 | intel_de_write(display, DPHY_CLK_TIMING_PARAM(port), | 
|---|
| 558 | val: intel_dsi->dphy_reg); | 
|---|
| 559 |  | 
|---|
| 560 | /* Program DPHY data lanes timings */ | 
|---|
| 561 | for_each_dsi_port(port, intel_dsi->ports) | 
|---|
| 562 | intel_de_write(display, DPHY_DATA_TIMING_PARAM(port), | 
|---|
| 563 | val: intel_dsi->dphy_data_lane_reg); | 
|---|
| 564 |  | 
|---|
| 565 | /* | 
|---|
| 566 | * If DSI link operating at or below an 800 MHz, | 
|---|
| 567 | * TA_SURE should be override and programmed to | 
|---|
| 568 | * a value '0' inside TA_PARAM_REGISTERS otherwise | 
|---|
| 569 | * leave all fields at HW default values. | 
|---|
| 570 | */ | 
|---|
| 571 | if (DISPLAY_VER(display) == 11) { | 
|---|
| 572 | if (afe_clk(encoder, crtc_state) <= 800000) { | 
|---|
| 573 | for_each_dsi_port(port, intel_dsi->ports) | 
|---|
| 574 | intel_de_rmw(display, DPHY_TA_TIMING_PARAM(port), | 
|---|
| 575 | TA_SURE_MASK, | 
|---|
| 576 | TA_SURE_OVERRIDE | TA_SURE(0)); | 
|---|
| 577 | } | 
|---|
| 578 | } | 
|---|
| 579 |  | 
|---|
| 580 | if (display->platform.jasperlake || display->platform.elkhartlake) { | 
|---|
| 581 | for_each_dsi_phy(phy, intel_dsi->phys) | 
|---|
| 582 | intel_de_rmw(display, ICL_DPHY_CHKN(phy), | 
|---|
| 583 | clear: 0, ICL_DPHY_CHKN_AFE_OVER_PPI_STRAP); | 
|---|
| 584 | } | 
|---|
| 585 | } | 
|---|
| 586 |  | 
|---|
| 587 | static void | 
|---|
| 588 | gen11_dsi_setup_timings(struct intel_encoder *encoder, | 
|---|
| 589 | const struct intel_crtc_state *crtc_state) | 
|---|
| 590 | { | 
|---|
| 591 | struct intel_display *display = to_intel_display(encoder); | 
|---|
| 592 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
|---|
| 593 | enum port port; | 
|---|
| 594 |  | 
|---|
| 595 | /* Program T-INIT master registers */ | 
|---|
| 596 | for_each_dsi_port(port, intel_dsi->ports) | 
|---|
| 597 | intel_de_rmw(display, ICL_DSI_T_INIT_MASTER(port), | 
|---|
| 598 | DSI_T_INIT_MASTER_MASK, set: intel_dsi->init_count); | 
|---|
| 599 |  | 
|---|
| 600 | /* shadow register inside display core */ | 
|---|
| 601 | for_each_dsi_port(port, intel_dsi->ports) | 
|---|
| 602 | intel_de_write(display, DSI_CLK_TIMING_PARAM(port), | 
|---|
| 603 | val: intel_dsi->dphy_reg); | 
|---|
| 604 |  | 
|---|
| 605 | /* shadow register inside display core */ | 
|---|
| 606 | for_each_dsi_port(port, intel_dsi->ports) | 
|---|
| 607 | intel_de_write(display, DSI_DATA_TIMING_PARAM(port), | 
|---|
| 608 | val: intel_dsi->dphy_data_lane_reg); | 
|---|
| 609 |  | 
|---|
| 610 | /* shadow register inside display core */ | 
|---|
| 611 | if (DISPLAY_VER(display) == 11) { | 
|---|
| 612 | if (afe_clk(encoder, crtc_state) <= 800000) { | 
|---|
| 613 | for_each_dsi_port(port, intel_dsi->ports) { | 
|---|
| 614 | intel_de_rmw(display, DSI_TA_TIMING_PARAM(port), | 
|---|
| 615 | TA_SURE_MASK, | 
|---|
| 616 | TA_SURE_OVERRIDE | TA_SURE(0)); | 
|---|
| 617 | } | 
|---|
| 618 | } | 
|---|
| 619 | } | 
|---|
| 620 | } | 
|---|
| 621 |  | 
|---|
| 622 | static void gen11_dsi_gate_clocks(struct intel_encoder *encoder) | 
|---|
| 623 | { | 
|---|
| 624 | struct intel_display *display = to_intel_display(encoder); | 
|---|
| 625 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
|---|
| 626 | u32 tmp; | 
|---|
| 627 | enum phy phy; | 
|---|
| 628 |  | 
|---|
| 629 | mutex_lock(lock: &display->dpll.lock); | 
|---|
| 630 | tmp = intel_de_read(display, ICL_DPCLKA_CFGCR0); | 
|---|
| 631 | for_each_dsi_phy(phy, intel_dsi->phys) | 
|---|
| 632 | tmp |= ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy); | 
|---|
| 633 |  | 
|---|
| 634 | intel_de_write(display, ICL_DPCLKA_CFGCR0, val: tmp); | 
|---|
| 635 | mutex_unlock(lock: &display->dpll.lock); | 
|---|
| 636 | } | 
|---|
| 637 |  | 
|---|
| 638 | static void gen11_dsi_ungate_clocks(struct intel_encoder *encoder) | 
|---|
| 639 | { | 
|---|
| 640 | struct intel_display *display = to_intel_display(encoder); | 
|---|
| 641 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
|---|
| 642 | u32 tmp; | 
|---|
| 643 | enum phy phy; | 
|---|
| 644 |  | 
|---|
| 645 | mutex_lock(lock: &display->dpll.lock); | 
|---|
| 646 | tmp = intel_de_read(display, ICL_DPCLKA_CFGCR0); | 
|---|
| 647 | for_each_dsi_phy(phy, intel_dsi->phys) | 
|---|
| 648 | tmp &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy); | 
|---|
| 649 |  | 
|---|
| 650 | intel_de_write(display, ICL_DPCLKA_CFGCR0, val: tmp); | 
|---|
| 651 | mutex_unlock(lock: &display->dpll.lock); | 
|---|
| 652 | } | 
|---|
| 653 |  | 
|---|
| 654 | static bool gen11_dsi_is_clock_enabled(struct intel_encoder *encoder) | 
|---|
| 655 | { | 
|---|
| 656 | struct intel_display *display = to_intel_display(encoder); | 
|---|
| 657 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
|---|
| 658 | bool clock_enabled = false; | 
|---|
| 659 | enum phy phy; | 
|---|
| 660 | u32 tmp; | 
|---|
| 661 |  | 
|---|
| 662 | tmp = intel_de_read(display, ICL_DPCLKA_CFGCR0); | 
|---|
| 663 |  | 
|---|
| 664 | for_each_dsi_phy(phy, intel_dsi->phys) { | 
|---|
| 665 | if (!(tmp & ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy))) | 
|---|
| 666 | clock_enabled = true; | 
|---|
| 667 | } | 
|---|
| 668 |  | 
|---|
| 669 | return clock_enabled; | 
|---|
| 670 | } | 
|---|
| 671 |  | 
|---|
| 672 | static void gen11_dsi_map_pll(struct intel_encoder *encoder, | 
|---|
| 673 | const struct intel_crtc_state *crtc_state) | 
|---|
| 674 | { | 
|---|
| 675 | struct intel_display *display = to_intel_display(encoder); | 
|---|
| 676 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
|---|
| 677 | struct intel_dpll *pll = crtc_state->intel_dpll; | 
|---|
| 678 | enum phy phy; | 
|---|
| 679 | u32 val; | 
|---|
| 680 |  | 
|---|
| 681 | mutex_lock(lock: &display->dpll.lock); | 
|---|
| 682 |  | 
|---|
| 683 | val = intel_de_read(display, ICL_DPCLKA_CFGCR0); | 
|---|
| 684 | for_each_dsi_phy(phy, intel_dsi->phys) { | 
|---|
| 685 | val &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy); | 
|---|
| 686 | val |= ICL_DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, phy); | 
|---|
| 687 | } | 
|---|
| 688 | intel_de_write(display, ICL_DPCLKA_CFGCR0, val); | 
|---|
| 689 |  | 
|---|
| 690 | for_each_dsi_phy(phy, intel_dsi->phys) { | 
|---|
| 691 | val &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy); | 
|---|
| 692 | } | 
|---|
| 693 | intel_de_write(display, ICL_DPCLKA_CFGCR0, val); | 
|---|
| 694 |  | 
|---|
| 695 | intel_de_posting_read(display, ICL_DPCLKA_CFGCR0); | 
|---|
| 696 |  | 
|---|
| 697 | mutex_unlock(lock: &display->dpll.lock); | 
|---|
| 698 | } | 
|---|
| 699 |  | 
|---|
| 700 | static void | 
|---|
| 701 | gen11_dsi_configure_transcoder(struct intel_encoder *encoder, | 
|---|
| 702 | const struct intel_crtc_state *pipe_config) | 
|---|
| 703 | { | 
|---|
| 704 | struct intel_display *display = to_intel_display(encoder); | 
|---|
| 705 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
|---|
| 706 | struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc); | 
|---|
| 707 | enum pipe pipe = crtc->pipe; | 
|---|
| 708 | u32 tmp; | 
|---|
| 709 | enum port port; | 
|---|
| 710 | enum transcoder dsi_trans; | 
|---|
| 711 |  | 
|---|
| 712 | for_each_dsi_port(port, intel_dsi->ports) { | 
|---|
| 713 | dsi_trans = dsi_port_to_transcoder(port); | 
|---|
| 714 | tmp = intel_de_read(display, DSI_TRANS_FUNC_CONF(dsi_trans)); | 
|---|
| 715 |  | 
|---|
| 716 | if (intel_dsi->eotp_pkt) | 
|---|
| 717 | tmp &= ~EOTP_DISABLED; | 
|---|
| 718 | else | 
|---|
| 719 | tmp |= EOTP_DISABLED; | 
|---|
| 720 |  | 
|---|
| 721 | /* enable link calibration if freq > 1.5Gbps */ | 
|---|
| 722 | if (afe_clk(encoder, crtc_state: pipe_config) >= 1500 * 1000) { | 
|---|
| 723 | tmp &= ~LINK_CALIBRATION_MASK; | 
|---|
| 724 | tmp |= CALIBRATION_ENABLED_INITIAL_ONLY; | 
|---|
| 725 | } | 
|---|
| 726 |  | 
|---|
| 727 | /* configure continuous clock */ | 
|---|
| 728 | tmp &= ~CONTINUOUS_CLK_MASK; | 
|---|
| 729 | if (intel_dsi->clock_stop) | 
|---|
| 730 | tmp |= CLK_ENTER_LP_AFTER_DATA; | 
|---|
| 731 | else | 
|---|
| 732 | tmp |= CLK_HS_CONTINUOUS; | 
|---|
| 733 |  | 
|---|
| 734 | /* configure buffer threshold limit to minimum */ | 
|---|
| 735 | tmp &= ~PIX_BUF_THRESHOLD_MASK; | 
|---|
| 736 | tmp |= PIX_BUF_THRESHOLD_1_4; | 
|---|
| 737 |  | 
|---|
| 738 | /* set virtual channel to '0' */ | 
|---|
| 739 | tmp &= ~PIX_VIRT_CHAN_MASK; | 
|---|
| 740 | tmp |= PIX_VIRT_CHAN(0); | 
|---|
| 741 |  | 
|---|
| 742 | /* program BGR transmission */ | 
|---|
| 743 | if (intel_dsi->bgr_enabled) | 
|---|
| 744 | tmp |= BGR_TRANSMISSION; | 
|---|
| 745 |  | 
|---|
| 746 | /* select pixel format */ | 
|---|
| 747 | tmp &= ~PIX_FMT_MASK; | 
|---|
| 748 | if (pipe_config->dsc.compression_enable) { | 
|---|
| 749 | tmp |= PIX_FMT_COMPRESSED; | 
|---|
| 750 | } else { | 
|---|
| 751 | switch (intel_dsi->pixel_format) { | 
|---|
| 752 | default: | 
|---|
| 753 | MISSING_CASE(intel_dsi->pixel_format); | 
|---|
| 754 | fallthrough; | 
|---|
| 755 | case MIPI_DSI_FMT_RGB565: | 
|---|
| 756 | tmp |= PIX_FMT_RGB565; | 
|---|
| 757 | break; | 
|---|
| 758 | case MIPI_DSI_FMT_RGB666_PACKED: | 
|---|
| 759 | tmp |= PIX_FMT_RGB666_PACKED; | 
|---|
| 760 | break; | 
|---|
| 761 | case MIPI_DSI_FMT_RGB666: | 
|---|
| 762 | tmp |= PIX_FMT_RGB666_LOOSE; | 
|---|
| 763 | break; | 
|---|
| 764 | case MIPI_DSI_FMT_RGB888: | 
|---|
| 765 | tmp |= PIX_FMT_RGB888; | 
|---|
| 766 | break; | 
|---|
| 767 | } | 
|---|
| 768 | } | 
|---|
| 769 |  | 
|---|
| 770 | if (DISPLAY_VER(display) >= 12) { | 
|---|
| 771 | if (is_vid_mode(intel_dsi)) | 
|---|
| 772 | tmp |= BLANKING_PACKET_ENABLE; | 
|---|
| 773 | } | 
|---|
| 774 |  | 
|---|
| 775 | /* program DSI operation mode */ | 
|---|
| 776 | if (is_vid_mode(intel_dsi)) { | 
|---|
| 777 | tmp &= ~OP_MODE_MASK; | 
|---|
| 778 | switch (intel_dsi->video_mode) { | 
|---|
| 779 | default: | 
|---|
| 780 | MISSING_CASE(intel_dsi->video_mode); | 
|---|
| 781 | fallthrough; | 
|---|
| 782 | case NON_BURST_SYNC_EVENTS: | 
|---|
| 783 | tmp |= VIDEO_MODE_SYNC_EVENT; | 
|---|
| 784 | break; | 
|---|
| 785 | case NON_BURST_SYNC_PULSE: | 
|---|
| 786 | tmp |= VIDEO_MODE_SYNC_PULSE; | 
|---|
| 787 | break; | 
|---|
| 788 | } | 
|---|
| 789 | } else { | 
|---|
| 790 | /* | 
|---|
| 791 | * FIXME: Retrieve this info from VBT. | 
|---|
| 792 | * As per the spec when dsi transcoder is operating | 
|---|
| 793 | * in TE GATE mode, TE comes from GPIO | 
|---|
| 794 | * which is UTIL PIN for DSI 0. | 
|---|
| 795 | * Also this GPIO would not be used for other | 
|---|
| 796 | * purposes is an assumption. | 
|---|
| 797 | */ | 
|---|
| 798 | tmp &= ~OP_MODE_MASK; | 
|---|
| 799 | tmp |= CMD_MODE_TE_GATE; | 
|---|
| 800 | tmp |= TE_SOURCE_GPIO; | 
|---|
| 801 | } | 
|---|
| 802 |  | 
|---|
| 803 | intel_de_write(display, DSI_TRANS_FUNC_CONF(dsi_trans), val: tmp); | 
|---|
| 804 | } | 
|---|
| 805 |  | 
|---|
| 806 | /* enable port sync mode if dual link */ | 
|---|
| 807 | if (intel_dsi->dual_link) { | 
|---|
| 808 | for_each_dsi_port(port, intel_dsi->ports) { | 
|---|
| 809 | dsi_trans = dsi_port_to_transcoder(port); | 
|---|
| 810 | intel_de_rmw(display, | 
|---|
| 811 | TRANS_DDI_FUNC_CTL2(display, dsi_trans), | 
|---|
| 812 | clear: 0, PORT_SYNC_MODE_ENABLE); | 
|---|
| 813 | } | 
|---|
| 814 |  | 
|---|
| 815 | /* configure stream splitting */ | 
|---|
| 816 | configure_dual_link_mode(encoder, pipe_config); | 
|---|
| 817 | } | 
|---|
| 818 |  | 
|---|
| 819 | for_each_dsi_port(port, intel_dsi->ports) { | 
|---|
| 820 | dsi_trans = dsi_port_to_transcoder(port); | 
|---|
| 821 |  | 
|---|
| 822 | /* select data lane width */ | 
|---|
| 823 | tmp = intel_de_read(display, | 
|---|
| 824 | TRANS_DDI_FUNC_CTL(display, dsi_trans)); | 
|---|
| 825 | tmp &= ~TRANS_DDI_PORT_WIDTH_MASK; | 
|---|
| 826 | tmp |= TRANS_DDI_PORT_WIDTH(intel_dsi->lane_count); | 
|---|
| 827 |  | 
|---|
| 828 | /* select input pipe */ | 
|---|
| 829 | tmp &= ~TRANS_DDI_EDP_INPUT_MASK; | 
|---|
| 830 | switch (pipe) { | 
|---|
| 831 | default: | 
|---|
| 832 | MISSING_CASE(pipe); | 
|---|
| 833 | fallthrough; | 
|---|
| 834 | case PIPE_A: | 
|---|
| 835 | tmp |= TRANS_DDI_EDP_INPUT_A_ON; | 
|---|
| 836 | break; | 
|---|
| 837 | case PIPE_B: | 
|---|
| 838 | tmp |= TRANS_DDI_EDP_INPUT_B_ONOFF; | 
|---|
| 839 | break; | 
|---|
| 840 | case PIPE_C: | 
|---|
| 841 | tmp |= TRANS_DDI_EDP_INPUT_C_ONOFF; | 
|---|
| 842 | break; | 
|---|
| 843 | case PIPE_D: | 
|---|
| 844 | tmp |= TRANS_DDI_EDP_INPUT_D_ONOFF; | 
|---|
| 845 | break; | 
|---|
| 846 | } | 
|---|
| 847 |  | 
|---|
| 848 | /* enable DDI buffer */ | 
|---|
| 849 | tmp |= TRANS_DDI_FUNC_ENABLE; | 
|---|
| 850 | intel_de_write(display, | 
|---|
| 851 | TRANS_DDI_FUNC_CTL(display, dsi_trans), val: tmp); | 
|---|
| 852 | } | 
|---|
| 853 |  | 
|---|
| 854 | /* wait for link ready */ | 
|---|
| 855 | for_each_dsi_port(port, intel_dsi->ports) { | 
|---|
| 856 | int ret; | 
|---|
| 857 |  | 
|---|
| 858 | dsi_trans = dsi_port_to_transcoder(port); | 
|---|
| 859 |  | 
|---|
| 860 | ret = intel_de_wait_custom(display, DSI_TRANS_FUNC_CONF(dsi_trans), | 
|---|
| 861 | LINK_READY, LINK_READY, | 
|---|
| 862 | fast_timeout_us: 2500, slow_timeout_ms: 0, NULL); | 
|---|
| 863 | if (ret) | 
|---|
| 864 | drm_err(display->drm, "DSI link not ready\n"); | 
|---|
| 865 | } | 
|---|
| 866 | } | 
|---|
| 867 |  | 
|---|
| 868 | static void | 
|---|
| 869 | gen11_dsi_set_transcoder_timings(struct intel_encoder *encoder, | 
|---|
| 870 | const struct intel_crtc_state *crtc_state) | 
|---|
| 871 | { | 
|---|
| 872 | struct intel_display *display = to_intel_display(encoder); | 
|---|
| 873 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
|---|
| 874 | const struct drm_display_mode *adjusted_mode = | 
|---|
| 875 | &crtc_state->hw.adjusted_mode; | 
|---|
| 876 | enum port port; | 
|---|
| 877 | enum transcoder dsi_trans; | 
|---|
| 878 | /* horizontal timings */ | 
|---|
| 879 | u16 htotal, hactive, hsync_start, hsync_end, hsync_size; | 
|---|
| 880 | u16 hback_porch; | 
|---|
| 881 | /* vertical timings */ | 
|---|
| 882 | u16 vtotal, vactive, vsync_start, vsync_end, vsync_shift; | 
|---|
| 883 | int mul = 1, div = 1; | 
|---|
| 884 |  | 
|---|
| 885 | /* | 
|---|
| 886 | * Adjust horizontal timings (htotal, hsync_start, hsync_end) to account | 
|---|
| 887 | * for slower link speed if DSC is enabled. | 
|---|
| 888 | * | 
|---|
| 889 | * The compression frequency ratio is the ratio between compressed and | 
|---|
| 890 | * non-compressed link speeds, and simplifies down to the ratio between | 
|---|
| 891 | * compressed and non-compressed bpp. | 
|---|
| 892 | */ | 
|---|
| 893 | if (crtc_state->dsc.compression_enable) { | 
|---|
| 894 | mul = fxp_q4_to_int(val_q4: crtc_state->dsc.compressed_bpp_x16); | 
|---|
| 895 | div = mipi_dsi_pixel_format_to_bpp(fmt: intel_dsi->pixel_format); | 
|---|
| 896 | } | 
|---|
| 897 |  | 
|---|
| 898 | hactive = adjusted_mode->crtc_hdisplay; | 
|---|
| 899 |  | 
|---|
| 900 | if (is_vid_mode(intel_dsi)) | 
|---|
| 901 | htotal = DIV_ROUND_UP(adjusted_mode->crtc_htotal * mul, div); | 
|---|
| 902 | else | 
|---|
| 903 | htotal = DIV_ROUND_UP((hactive + 160) * mul, div); | 
|---|
| 904 |  | 
|---|
| 905 | hsync_start = DIV_ROUND_UP(adjusted_mode->crtc_hsync_start * mul, div); | 
|---|
| 906 | hsync_end = DIV_ROUND_UP(adjusted_mode->crtc_hsync_end * mul, div); | 
|---|
| 907 | hsync_size  = hsync_end - hsync_start; | 
|---|
| 908 | hback_porch = (adjusted_mode->crtc_htotal - | 
|---|
| 909 | adjusted_mode->crtc_hsync_end); | 
|---|
| 910 | vactive = adjusted_mode->crtc_vdisplay; | 
|---|
| 911 |  | 
|---|
| 912 | if (is_vid_mode(intel_dsi)) { | 
|---|
| 913 | vtotal = adjusted_mode->crtc_vtotal; | 
|---|
| 914 | } else { | 
|---|
| 915 | int bpp, line_time_us, byte_clk_period_ns; | 
|---|
| 916 |  | 
|---|
| 917 | if (crtc_state->dsc.compression_enable) | 
|---|
| 918 | bpp = fxp_q4_to_int(val_q4: crtc_state->dsc.compressed_bpp_x16); | 
|---|
| 919 | else | 
|---|
| 920 | bpp = mipi_dsi_pixel_format_to_bpp(fmt: intel_dsi->pixel_format); | 
|---|
| 921 |  | 
|---|
| 922 | byte_clk_period_ns = 1000000 / afe_clk(encoder, crtc_state); | 
|---|
| 923 | line_time_us = (htotal * (bpp / 8) * byte_clk_period_ns) / (1000 * intel_dsi->lane_count); | 
|---|
| 924 | vtotal = vactive + DIV_ROUND_UP(400, line_time_us); | 
|---|
| 925 | } | 
|---|
| 926 | vsync_start = adjusted_mode->crtc_vsync_start; | 
|---|
| 927 | vsync_end = adjusted_mode->crtc_vsync_end; | 
|---|
| 928 | vsync_shift = hsync_start - htotal / 2; | 
|---|
| 929 |  | 
|---|
| 930 | if (intel_dsi->dual_link) { | 
|---|
| 931 | hactive /= 2; | 
|---|
| 932 | if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK) | 
|---|
| 933 | hactive += intel_dsi->pixel_overlap; | 
|---|
| 934 | htotal /= 2; | 
|---|
| 935 | } | 
|---|
| 936 |  | 
|---|
| 937 | /* minimum hactive as per bspec: 256 pixels */ | 
|---|
| 938 | if (adjusted_mode->crtc_hdisplay < 256) | 
|---|
| 939 | drm_err(display->drm, "hactive is less then 256 pixels\n"); | 
|---|
| 940 |  | 
|---|
| 941 | /* if RGB666 format, then hactive must be multiple of 4 pixels */ | 
|---|
| 942 | if (intel_dsi->pixel_format == MIPI_DSI_FMT_RGB666 && hactive % 4 != 0) | 
|---|
| 943 | drm_err(display->drm, | 
|---|
| 944 | "hactive pixels are not multiple of 4\n"); | 
|---|
| 945 |  | 
|---|
| 946 | /* program TRANS_HTOTAL register */ | 
|---|
| 947 | for_each_dsi_port(port, intel_dsi->ports) { | 
|---|
| 948 | dsi_trans = dsi_port_to_transcoder(port); | 
|---|
| 949 | intel_de_write(display, TRANS_HTOTAL(display, dsi_trans), | 
|---|
| 950 | HACTIVE(hactive - 1) | HTOTAL(htotal - 1)); | 
|---|
| 951 | } | 
|---|
| 952 |  | 
|---|
| 953 | /* TRANS_HSYNC register to be programmed only for video mode */ | 
|---|
| 954 | if (is_vid_mode(intel_dsi)) { | 
|---|
| 955 | if (intel_dsi->video_mode == NON_BURST_SYNC_PULSE) { | 
|---|
| 956 | /* BSPEC: hsync size should be atleast 16 pixels */ | 
|---|
| 957 | if (hsync_size < 16) | 
|---|
| 958 | drm_err(display->drm, | 
|---|
| 959 | "hsync size < 16 pixels\n"); | 
|---|
| 960 | } | 
|---|
| 961 |  | 
|---|
| 962 | if (hback_porch < 16) | 
|---|
| 963 | drm_err(display->drm, "hback porch < 16 pixels\n"); | 
|---|
| 964 |  | 
|---|
| 965 | if (intel_dsi->dual_link) { | 
|---|
| 966 | hsync_start /= 2; | 
|---|
| 967 | hsync_end /= 2; | 
|---|
| 968 | } | 
|---|
| 969 |  | 
|---|
| 970 | for_each_dsi_port(port, intel_dsi->ports) { | 
|---|
| 971 | dsi_trans = dsi_port_to_transcoder(port); | 
|---|
| 972 | intel_de_write(display, | 
|---|
| 973 | TRANS_HSYNC(display, dsi_trans), | 
|---|
| 974 | HSYNC_START(hsync_start - 1) | HSYNC_END(hsync_end - 1)); | 
|---|
| 975 | } | 
|---|
| 976 | } | 
|---|
| 977 |  | 
|---|
| 978 | /* program TRANS_VTOTAL register */ | 
|---|
| 979 | for_each_dsi_port(port, intel_dsi->ports) { | 
|---|
| 980 | dsi_trans = dsi_port_to_transcoder(port); | 
|---|
| 981 | /* | 
|---|
| 982 | * FIXME: Programming this by assuming progressive mode, since | 
|---|
| 983 | * non-interlaced info from VBT is not saved inside | 
|---|
| 984 | * struct drm_display_mode. | 
|---|
| 985 | * For interlace mode: program required pixel minus 2 | 
|---|
| 986 | */ | 
|---|
| 987 | intel_de_write(display, TRANS_VTOTAL(display, dsi_trans), | 
|---|
| 988 | VACTIVE(vactive - 1) | VTOTAL(vtotal - 1)); | 
|---|
| 989 | } | 
|---|
| 990 |  | 
|---|
| 991 | if (vsync_end < vsync_start || vsync_end > vtotal) | 
|---|
| 992 | drm_err(display->drm, "Invalid vsync_end value\n"); | 
|---|
| 993 |  | 
|---|
| 994 | if (vsync_start < vactive) | 
|---|
| 995 | drm_err(display->drm, "vsync_start less than vactive\n"); | 
|---|
| 996 |  | 
|---|
| 997 | /* program TRANS_VSYNC register for video mode only */ | 
|---|
| 998 | if (is_vid_mode(intel_dsi)) { | 
|---|
| 999 | for_each_dsi_port(port, intel_dsi->ports) { | 
|---|
| 1000 | dsi_trans = dsi_port_to_transcoder(port); | 
|---|
| 1001 | intel_de_write(display, | 
|---|
| 1002 | TRANS_VSYNC(display, dsi_trans), | 
|---|
| 1003 | VSYNC_START(vsync_start - 1) | VSYNC_END(vsync_end - 1)); | 
|---|
| 1004 | } | 
|---|
| 1005 | } | 
|---|
| 1006 |  | 
|---|
| 1007 | /* | 
|---|
| 1008 | * FIXME: It has to be programmed only for video modes and interlaced | 
|---|
| 1009 | * modes. Put the check condition here once interlaced | 
|---|
| 1010 | * info available as described above. | 
|---|
| 1011 | * program TRANS_VSYNCSHIFT register | 
|---|
| 1012 | */ | 
|---|
| 1013 | if (is_vid_mode(intel_dsi)) { | 
|---|
| 1014 | for_each_dsi_port(port, intel_dsi->ports) { | 
|---|
| 1015 | dsi_trans = dsi_port_to_transcoder(port); | 
|---|
| 1016 | intel_de_write(display, | 
|---|
| 1017 | TRANS_VSYNCSHIFT(display, dsi_trans), | 
|---|
| 1018 | val: vsync_shift); | 
|---|
| 1019 | } | 
|---|
| 1020 | } | 
|---|
| 1021 |  | 
|---|
| 1022 | /* | 
|---|
| 1023 | * program TRANS_VBLANK register, should be same as vtotal programmed | 
|---|
| 1024 | * | 
|---|
| 1025 | * FIXME get rid of these local hacks and do it right, | 
|---|
| 1026 | * this will not handle eg. delayed vblank correctly. | 
|---|
| 1027 | */ | 
|---|
| 1028 | if (DISPLAY_VER(display) >= 12) { | 
|---|
| 1029 | for_each_dsi_port(port, intel_dsi->ports) { | 
|---|
| 1030 | dsi_trans = dsi_port_to_transcoder(port); | 
|---|
| 1031 | intel_de_write(display, | 
|---|
| 1032 | TRANS_VBLANK(display, dsi_trans), | 
|---|
| 1033 | VBLANK_START(vactive - 1) | VBLANK_END(vtotal - 1)); | 
|---|
| 1034 | } | 
|---|
| 1035 | } | 
|---|
| 1036 | } | 
|---|
| 1037 |  | 
|---|
| 1038 | static void gen11_dsi_enable_transcoder(struct intel_encoder *encoder) | 
|---|
| 1039 | { | 
|---|
| 1040 | struct intel_display *display = to_intel_display(encoder); | 
|---|
| 1041 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
|---|
| 1042 | enum port port; | 
|---|
| 1043 | enum transcoder dsi_trans; | 
|---|
| 1044 |  | 
|---|
| 1045 | for_each_dsi_port(port, intel_dsi->ports) { | 
|---|
| 1046 | dsi_trans = dsi_port_to_transcoder(port); | 
|---|
| 1047 | intel_de_rmw(display, TRANSCONF(display, dsi_trans), clear: 0, | 
|---|
| 1048 | TRANSCONF_ENABLE); | 
|---|
| 1049 |  | 
|---|
| 1050 | /* wait for transcoder to be enabled */ | 
|---|
| 1051 | if (intel_de_wait_for_set(display, TRANSCONF(display, dsi_trans), | 
|---|
| 1052 | TRANSCONF_STATE_ENABLE, timeout_ms: 10)) | 
|---|
| 1053 | drm_err(display->drm, | 
|---|
| 1054 | "DSI transcoder not enabled\n"); | 
|---|
| 1055 | } | 
|---|
| 1056 | } | 
|---|
| 1057 |  | 
|---|
| 1058 | static void gen11_dsi_setup_timeouts(struct intel_encoder *encoder, | 
|---|
| 1059 | const struct intel_crtc_state *crtc_state) | 
|---|
| 1060 | { | 
|---|
| 1061 | struct intel_display *display = to_intel_display(encoder); | 
|---|
| 1062 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
|---|
| 1063 | enum port port; | 
|---|
| 1064 | enum transcoder dsi_trans; | 
|---|
| 1065 | u32 hs_tx_timeout, lp_rx_timeout, ta_timeout, divisor, mul; | 
|---|
| 1066 |  | 
|---|
| 1067 | /* | 
|---|
| 1068 | * escape clock count calculation: | 
|---|
| 1069 | * BYTE_CLK_COUNT = TIME_NS/(8 * UI) | 
|---|
| 1070 | * UI (nsec) = (10^6)/Bitrate | 
|---|
| 1071 | * TIME_NS = (BYTE_CLK_COUNT * 8 * 10^6)/ Bitrate | 
|---|
| 1072 | * ESCAPE_CLK_COUNT  = TIME_NS/ESC_CLK_NS | 
|---|
| 1073 | */ | 
|---|
| 1074 | divisor = intel_dsi_tlpx_ns(intel_dsi) * afe_clk(encoder, crtc_state) * 1000; | 
|---|
| 1075 | mul = 8 * 1000000; | 
|---|
| 1076 | hs_tx_timeout = DIV_ROUND_UP(intel_dsi->hs_tx_timeout * mul, | 
|---|
| 1077 | divisor); | 
|---|
| 1078 | lp_rx_timeout = DIV_ROUND_UP(intel_dsi->lp_rx_timeout * mul, divisor); | 
|---|
| 1079 | ta_timeout = DIV_ROUND_UP(intel_dsi->turn_arnd_val * mul, divisor); | 
|---|
| 1080 |  | 
|---|
| 1081 | for_each_dsi_port(port, intel_dsi->ports) { | 
|---|
| 1082 | dsi_trans = dsi_port_to_transcoder(port); | 
|---|
| 1083 |  | 
|---|
| 1084 | /* program hst_tx_timeout */ | 
|---|
| 1085 | intel_de_rmw(display, DSI_HSTX_TO(dsi_trans), | 
|---|
| 1086 | HSTX_TIMEOUT_VALUE_MASK, | 
|---|
| 1087 | HSTX_TIMEOUT_VALUE(hs_tx_timeout)); | 
|---|
| 1088 |  | 
|---|
| 1089 | /* FIXME: DSI_CALIB_TO */ | 
|---|
| 1090 |  | 
|---|
| 1091 | /* program lp_rx_host timeout */ | 
|---|
| 1092 | intel_de_rmw(display, DSI_LPRX_HOST_TO(dsi_trans), | 
|---|
| 1093 | LPRX_TIMEOUT_VALUE_MASK, | 
|---|
| 1094 | LPRX_TIMEOUT_VALUE(lp_rx_timeout)); | 
|---|
| 1095 |  | 
|---|
| 1096 | /* FIXME: DSI_PWAIT_TO */ | 
|---|
| 1097 |  | 
|---|
| 1098 | /* program turn around timeout */ | 
|---|
| 1099 | intel_de_rmw(display, DSI_TA_TO(dsi_trans), | 
|---|
| 1100 | TA_TIMEOUT_VALUE_MASK, | 
|---|
| 1101 | TA_TIMEOUT_VALUE(ta_timeout)); | 
|---|
| 1102 | } | 
|---|
| 1103 | } | 
|---|
| 1104 |  | 
|---|
| 1105 | static void gen11_dsi_config_util_pin(struct intel_encoder *encoder, | 
|---|
| 1106 | bool enable) | 
|---|
| 1107 | { | 
|---|
| 1108 | struct intel_display *display = to_intel_display(encoder); | 
|---|
| 1109 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
|---|
| 1110 | u32 tmp; | 
|---|
| 1111 |  | 
|---|
| 1112 | /* | 
|---|
| 1113 | * used as TE i/p for DSI0, | 
|---|
| 1114 | * for dual link/DSI1 TE is from slave DSI1 | 
|---|
| 1115 | * through GPIO. | 
|---|
| 1116 | */ | 
|---|
| 1117 | if (is_vid_mode(intel_dsi) || (intel_dsi->ports & BIT(PORT_B))) | 
|---|
| 1118 | return; | 
|---|
| 1119 |  | 
|---|
| 1120 | tmp = intel_de_read(display, UTIL_PIN_CTL); | 
|---|
| 1121 |  | 
|---|
| 1122 | if (enable) { | 
|---|
| 1123 | tmp |= UTIL_PIN_DIRECTION_INPUT; | 
|---|
| 1124 | tmp |= UTIL_PIN_ENABLE; | 
|---|
| 1125 | } else { | 
|---|
| 1126 | tmp &= ~UTIL_PIN_ENABLE; | 
|---|
| 1127 | } | 
|---|
| 1128 | intel_de_write(display, UTIL_PIN_CTL, val: tmp); | 
|---|
| 1129 | } | 
|---|
| 1130 |  | 
|---|
| 1131 | static void | 
|---|
| 1132 | gen11_dsi_enable_port_and_phy(struct intel_encoder *encoder, | 
|---|
| 1133 | const struct intel_crtc_state *crtc_state) | 
|---|
| 1134 | { | 
|---|
| 1135 | /* step 4a: power up all lanes of the DDI used by DSI */ | 
|---|
| 1136 | gen11_dsi_power_up_lanes(encoder); | 
|---|
| 1137 |  | 
|---|
| 1138 | /* step 4b: configure lane sequencing of the Combo-PHY transmitters */ | 
|---|
| 1139 | gen11_dsi_config_phy_lanes_sequence(encoder); | 
|---|
| 1140 |  | 
|---|
| 1141 | /* step 4c: configure voltage swing and skew */ | 
|---|
| 1142 | gen11_dsi_voltage_swing_program_seq(encoder); | 
|---|
| 1143 |  | 
|---|
| 1144 | /* setup D-PHY timings */ | 
|---|
| 1145 | gen11_dsi_setup_dphy_timings(encoder, crtc_state); | 
|---|
| 1146 |  | 
|---|
| 1147 | /* enable DDI buffer */ | 
|---|
| 1148 | gen11_dsi_enable_ddi_buffer(encoder); | 
|---|
| 1149 |  | 
|---|
| 1150 | gen11_dsi_gate_clocks(encoder); | 
|---|
| 1151 |  | 
|---|
| 1152 | gen11_dsi_setup_timings(encoder, crtc_state); | 
|---|
| 1153 |  | 
|---|
| 1154 | /* Since transcoder is configured to take events from GPIO */ | 
|---|
| 1155 | gen11_dsi_config_util_pin(encoder, enable: true); | 
|---|
| 1156 |  | 
|---|
| 1157 | /* step 4h: setup DSI protocol timeouts */ | 
|---|
| 1158 | gen11_dsi_setup_timeouts(encoder, crtc_state); | 
|---|
| 1159 |  | 
|---|
| 1160 | /* Step (4h, 4i, 4j, 4k): Configure transcoder */ | 
|---|
| 1161 | gen11_dsi_configure_transcoder(encoder, pipe_config: crtc_state); | 
|---|
| 1162 | } | 
|---|
| 1163 |  | 
|---|
| 1164 | static void gen11_dsi_powerup_panel(struct intel_encoder *encoder) | 
|---|
| 1165 | { | 
|---|
| 1166 | struct intel_display *display = to_intel_display(encoder); | 
|---|
| 1167 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
|---|
| 1168 | struct mipi_dsi_device *dsi; | 
|---|
| 1169 | enum port port; | 
|---|
| 1170 | enum transcoder dsi_trans; | 
|---|
| 1171 | u32 tmp; | 
|---|
| 1172 | int ret; | 
|---|
| 1173 |  | 
|---|
| 1174 | /* set maximum return packet size */ | 
|---|
| 1175 | for_each_dsi_port(port, intel_dsi->ports) { | 
|---|
| 1176 | dsi_trans = dsi_port_to_transcoder(port); | 
|---|
| 1177 |  | 
|---|
| 1178 | /* | 
|---|
| 1179 | * FIXME: This uses the number of DW's currently in the payload | 
|---|
| 1180 | * receive queue. This is probably not what we want here. | 
|---|
| 1181 | */ | 
|---|
| 1182 | tmp = intel_de_read(display, DSI_CMD_RXCTL(dsi_trans)); | 
|---|
| 1183 | tmp &= NUMBER_RX_PLOAD_DW_MASK; | 
|---|
| 1184 | /* multiply "Number Rx Payload DW" by 4 to get max value */ | 
|---|
| 1185 | tmp = tmp * 4; | 
|---|
| 1186 | dsi = intel_dsi->dsi_hosts[port]->device; | 
|---|
| 1187 | ret = mipi_dsi_set_maximum_return_packet_size(dsi, value: tmp); | 
|---|
| 1188 | if (ret < 0) | 
|---|
| 1189 | drm_err(display->drm, | 
|---|
| 1190 | "error setting max return pkt size%d\n", tmp); | 
|---|
| 1191 | } | 
|---|
| 1192 |  | 
|---|
| 1193 | intel_dsi_vbt_exec_sequence(intel_dsi, seq_id: MIPI_SEQ_INIT_OTP); | 
|---|
| 1194 |  | 
|---|
| 1195 | /* ensure all panel commands dispatched before enabling transcoder */ | 
|---|
| 1196 | wait_for_cmds_dispatched_to_panel(encoder); | 
|---|
| 1197 | } | 
|---|
| 1198 |  | 
|---|
| 1199 | static void gen11_dsi_pre_pll_enable(struct intel_atomic_state *state, | 
|---|
| 1200 | struct intel_encoder *encoder, | 
|---|
| 1201 | const struct intel_crtc_state *crtc_state, | 
|---|
| 1202 | const struct drm_connector_state *conn_state) | 
|---|
| 1203 | { | 
|---|
| 1204 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
|---|
| 1205 |  | 
|---|
| 1206 | intel_dsi_wait_panel_power_cycle(intel_dsi); | 
|---|
| 1207 |  | 
|---|
| 1208 | intel_dsi_vbt_exec_sequence(intel_dsi, seq_id: MIPI_SEQ_POWER_ON); | 
|---|
| 1209 | msleep(msecs: intel_dsi->panel_on_delay); | 
|---|
| 1210 | intel_dsi_vbt_exec_sequence(intel_dsi, seq_id: MIPI_SEQ_DEASSERT_RESET); | 
|---|
| 1211 |  | 
|---|
| 1212 | /* step2: enable IO power */ | 
|---|
| 1213 | gen11_dsi_enable_io_power(encoder); | 
|---|
| 1214 |  | 
|---|
| 1215 | /* step3: enable DSI PLL */ | 
|---|
| 1216 | gen11_dsi_program_esc_clk_div(encoder, crtc_state); | 
|---|
| 1217 | } | 
|---|
| 1218 |  | 
|---|
| 1219 | static void gen11_dsi_pre_enable(struct intel_atomic_state *state, | 
|---|
| 1220 | struct intel_encoder *encoder, | 
|---|
| 1221 | const struct intel_crtc_state *pipe_config, | 
|---|
| 1222 | const struct drm_connector_state *conn_state) | 
|---|
| 1223 | { | 
|---|
| 1224 | /* step3b */ | 
|---|
| 1225 | gen11_dsi_map_pll(encoder, crtc_state: pipe_config); | 
|---|
| 1226 |  | 
|---|
| 1227 | /* step4: enable DSI port and DPHY */ | 
|---|
| 1228 | gen11_dsi_enable_port_and_phy(encoder, crtc_state: pipe_config); | 
|---|
| 1229 |  | 
|---|
| 1230 | /* step5: program and powerup panel */ | 
|---|
| 1231 | gen11_dsi_powerup_panel(encoder); | 
|---|
| 1232 |  | 
|---|
| 1233 | intel_dsc_dsi_pps_write(encoder, crtc_state: pipe_config); | 
|---|
| 1234 |  | 
|---|
| 1235 | /* step6c: configure transcoder timings */ | 
|---|
| 1236 | gen11_dsi_set_transcoder_timings(encoder, crtc_state: pipe_config); | 
|---|
| 1237 | } | 
|---|
| 1238 |  | 
|---|
| 1239 | /* | 
|---|
| 1240 | * Wa_1409054076:icl,jsl,ehl | 
|---|
| 1241 | * When pipe A is disabled and MIPI DSI is enabled on pipe B, | 
|---|
| 1242 | * the AMT KVMR feature will incorrectly see pipe A as enabled. | 
|---|
| 1243 | * Set 0x42080 bit 23=1 before enabling DSI on pipe B and leave | 
|---|
| 1244 | * it set while DSI is enabled on pipe B | 
|---|
| 1245 | */ | 
|---|
| 1246 | static void icl_apply_kvmr_pipe_a_wa(struct intel_encoder *encoder, | 
|---|
| 1247 | enum pipe pipe, bool enable) | 
|---|
| 1248 | { | 
|---|
| 1249 | struct intel_display *display = to_intel_display(encoder); | 
|---|
| 1250 |  | 
|---|
| 1251 | if (DISPLAY_VER(display) == 11 && pipe == PIPE_B) | 
|---|
| 1252 | intel_de_rmw(display, CHICKEN_PAR1_1, | 
|---|
| 1253 | IGNORE_KVMR_PIPE_A, | 
|---|
| 1254 | set: enable ? IGNORE_KVMR_PIPE_A : 0); | 
|---|
| 1255 | } | 
|---|
| 1256 |  | 
|---|
| 1257 | /* | 
|---|
| 1258 | * Wa_16012360555:adl-p | 
|---|
| 1259 | * SW will have to program the "LP to HS Wakeup Guardband" | 
|---|
| 1260 | * to account for the repeaters on the HS Request/Ready | 
|---|
| 1261 | * PPI signaling between the Display engine and the DPHY. | 
|---|
| 1262 | */ | 
|---|
| 1263 | static void adlp_set_lp_hs_wakeup_gb(struct intel_encoder *encoder) | 
|---|
| 1264 | { | 
|---|
| 1265 | struct intel_display *display = to_intel_display(encoder); | 
|---|
| 1266 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
|---|
| 1267 | enum port port; | 
|---|
| 1268 |  | 
|---|
| 1269 | if (DISPLAY_VER(display) == 13) { | 
|---|
| 1270 | for_each_dsi_port(port, intel_dsi->ports) | 
|---|
| 1271 | intel_de_rmw(display, TGL_DSI_CHKN_REG(port), | 
|---|
| 1272 | TGL_DSI_CHKN_LSHS_GB_MASK, | 
|---|
| 1273 | TGL_DSI_CHKN_LSHS_GB(4)); | 
|---|
| 1274 | } | 
|---|
| 1275 | } | 
|---|
| 1276 |  | 
|---|
| 1277 | static void gen11_dsi_enable(struct intel_atomic_state *state, | 
|---|
| 1278 | struct intel_encoder *encoder, | 
|---|
| 1279 | const struct intel_crtc_state *crtc_state, | 
|---|
| 1280 | const struct drm_connector_state *conn_state) | 
|---|
| 1281 | { | 
|---|
| 1282 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
|---|
| 1283 | struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); | 
|---|
| 1284 |  | 
|---|
| 1285 | /* Wa_1409054076:icl,jsl,ehl */ | 
|---|
| 1286 | icl_apply_kvmr_pipe_a_wa(encoder, pipe: crtc->pipe, enable: true); | 
|---|
| 1287 |  | 
|---|
| 1288 | /* Wa_16012360555:adl-p */ | 
|---|
| 1289 | adlp_set_lp_hs_wakeup_gb(encoder); | 
|---|
| 1290 |  | 
|---|
| 1291 | /* step6d: enable dsi transcoder */ | 
|---|
| 1292 | gen11_dsi_enable_transcoder(encoder); | 
|---|
| 1293 |  | 
|---|
| 1294 | intel_dsi_vbt_exec_sequence(intel_dsi, seq_id: MIPI_SEQ_DISPLAY_ON); | 
|---|
| 1295 |  | 
|---|
| 1296 | /* step7: enable backlight */ | 
|---|
| 1297 | intel_backlight_enable(crtc_state, conn_state); | 
|---|
| 1298 | intel_dsi_vbt_exec_sequence(intel_dsi, seq_id: MIPI_SEQ_BACKLIGHT_ON); | 
|---|
| 1299 |  | 
|---|
| 1300 | intel_panel_prepare(crtc_state, conn_state); | 
|---|
| 1301 |  | 
|---|
| 1302 | intel_crtc_vblank_on(crtc_state); | 
|---|
| 1303 | } | 
|---|
| 1304 |  | 
|---|
| 1305 | static void gen11_dsi_disable_transcoder(struct intel_encoder *encoder) | 
|---|
| 1306 | { | 
|---|
| 1307 | struct intel_display *display = to_intel_display(encoder); | 
|---|
| 1308 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
|---|
| 1309 | enum port port; | 
|---|
| 1310 | enum transcoder dsi_trans; | 
|---|
| 1311 |  | 
|---|
| 1312 | for_each_dsi_port(port, intel_dsi->ports) { | 
|---|
| 1313 | dsi_trans = dsi_port_to_transcoder(port); | 
|---|
| 1314 |  | 
|---|
| 1315 | /* disable transcoder */ | 
|---|
| 1316 | intel_de_rmw(display, TRANSCONF(display, dsi_trans), | 
|---|
| 1317 | TRANSCONF_ENABLE, set: 0); | 
|---|
| 1318 |  | 
|---|
| 1319 | /* wait for transcoder to be disabled */ | 
|---|
| 1320 | if (intel_de_wait_for_clear(display, TRANSCONF(display, dsi_trans), | 
|---|
| 1321 | TRANSCONF_STATE_ENABLE, timeout_ms: 50)) | 
|---|
| 1322 | drm_err(display->drm, | 
|---|
| 1323 | "DSI trancoder not disabled\n"); | 
|---|
| 1324 | } | 
|---|
| 1325 | } | 
|---|
| 1326 |  | 
|---|
| 1327 | static void gen11_dsi_powerdown_panel(struct intel_encoder *encoder) | 
|---|
| 1328 | { | 
|---|
| 1329 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
|---|
| 1330 |  | 
|---|
| 1331 | intel_dsi_vbt_exec_sequence(intel_dsi, seq_id: MIPI_SEQ_DISPLAY_OFF); | 
|---|
| 1332 |  | 
|---|
| 1333 | /* ensure cmds dispatched to panel */ | 
|---|
| 1334 | wait_for_cmds_dispatched_to_panel(encoder); | 
|---|
| 1335 | } | 
|---|
| 1336 |  | 
|---|
| 1337 | static void gen11_dsi_deconfigure_trancoder(struct intel_encoder *encoder) | 
|---|
| 1338 | { | 
|---|
| 1339 | struct intel_display *display = to_intel_display(encoder); | 
|---|
| 1340 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
|---|
| 1341 | enum port port; | 
|---|
| 1342 | enum transcoder dsi_trans; | 
|---|
| 1343 | u32 tmp; | 
|---|
| 1344 | int ret; | 
|---|
| 1345 |  | 
|---|
| 1346 | /* disable periodic update mode */ | 
|---|
| 1347 | if (is_cmd_mode(intel_dsi)) { | 
|---|
| 1348 | for_each_dsi_port(port, intel_dsi->ports) | 
|---|
| 1349 | intel_de_rmw(display, DSI_CMD_FRMCTL(port), | 
|---|
| 1350 | DSI_PERIODIC_FRAME_UPDATE_ENABLE, set: 0); | 
|---|
| 1351 | } | 
|---|
| 1352 |  | 
|---|
| 1353 | /* put dsi link in ULPS */ | 
|---|
| 1354 | for_each_dsi_port(port, intel_dsi->ports) { | 
|---|
| 1355 | dsi_trans = dsi_port_to_transcoder(port); | 
|---|
| 1356 | tmp = intel_de_read(display, DSI_LP_MSG(dsi_trans)); | 
|---|
| 1357 | tmp |= LINK_ENTER_ULPS; | 
|---|
| 1358 | tmp &= ~LINK_ULPS_TYPE_LP11; | 
|---|
| 1359 | intel_de_write(display, DSI_LP_MSG(dsi_trans), val: tmp); | 
|---|
| 1360 |  | 
|---|
| 1361 | ret = intel_de_wait_custom(display, DSI_LP_MSG(dsi_trans), | 
|---|
| 1362 | LINK_IN_ULPS, LINK_IN_ULPS, | 
|---|
| 1363 | fast_timeout_us: 10, slow_timeout_ms: 0, NULL); | 
|---|
| 1364 | if (ret) | 
|---|
| 1365 | drm_err(display->drm, "DSI link not in ULPS\n"); | 
|---|
| 1366 | } | 
|---|
| 1367 |  | 
|---|
| 1368 | /* disable ddi function */ | 
|---|
| 1369 | for_each_dsi_port(port, intel_dsi->ports) { | 
|---|
| 1370 | dsi_trans = dsi_port_to_transcoder(port); | 
|---|
| 1371 | intel_de_rmw(display, | 
|---|
| 1372 | TRANS_DDI_FUNC_CTL(display, dsi_trans), | 
|---|
| 1373 | TRANS_DDI_FUNC_ENABLE, set: 0); | 
|---|
| 1374 | } | 
|---|
| 1375 |  | 
|---|
| 1376 | /* disable port sync mode if dual link */ | 
|---|
| 1377 | if (intel_dsi->dual_link) { | 
|---|
| 1378 | for_each_dsi_port(port, intel_dsi->ports) { | 
|---|
| 1379 | dsi_trans = dsi_port_to_transcoder(port); | 
|---|
| 1380 | intel_de_rmw(display, | 
|---|
| 1381 | TRANS_DDI_FUNC_CTL2(display, dsi_trans), | 
|---|
| 1382 | PORT_SYNC_MODE_ENABLE, set: 0); | 
|---|
| 1383 | } | 
|---|
| 1384 | } | 
|---|
| 1385 | } | 
|---|
| 1386 |  | 
|---|
| 1387 | static void gen11_dsi_disable_port(struct intel_encoder *encoder) | 
|---|
| 1388 | { | 
|---|
| 1389 | struct intel_display *display = to_intel_display(encoder); | 
|---|
| 1390 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
|---|
| 1391 | enum port port; | 
|---|
| 1392 | int ret; | 
|---|
| 1393 |  | 
|---|
| 1394 | gen11_dsi_ungate_clocks(encoder); | 
|---|
| 1395 | for_each_dsi_port(port, intel_dsi->ports) { | 
|---|
| 1396 | intel_de_rmw(display, DDI_BUF_CTL(port), DDI_BUF_CTL_ENABLE, set: 0); | 
|---|
| 1397 |  | 
|---|
| 1398 | ret = intel_de_wait_custom(display, DDI_BUF_CTL(port), | 
|---|
| 1399 | DDI_BUF_IS_IDLE, DDI_BUF_IS_IDLE, | 
|---|
| 1400 | fast_timeout_us: 8, slow_timeout_ms: 0, NULL); | 
|---|
| 1401 |  | 
|---|
| 1402 | if (ret) | 
|---|
| 1403 | drm_err(display->drm, | 
|---|
| 1404 | "DDI port:%c buffer not idle\n", | 
|---|
| 1405 | port_name(port)); | 
|---|
| 1406 | } | 
|---|
| 1407 | gen11_dsi_gate_clocks(encoder); | 
|---|
| 1408 | } | 
|---|
| 1409 |  | 
|---|
| 1410 | static void gen11_dsi_disable_io_power(struct intel_encoder *encoder) | 
|---|
| 1411 | { | 
|---|
| 1412 | struct intel_display *display = to_intel_display(encoder); | 
|---|
| 1413 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
|---|
| 1414 | enum port port; | 
|---|
| 1415 |  | 
|---|
| 1416 | for_each_dsi_port(port, intel_dsi->ports) { | 
|---|
| 1417 | intel_wakeref_t wakeref; | 
|---|
| 1418 |  | 
|---|
| 1419 | wakeref = fetch_and_zero(&intel_dsi->io_wakeref[port]); | 
|---|
| 1420 | intel_display_power_put(display, | 
|---|
| 1421 | domain: port == PORT_A ? | 
|---|
| 1422 | POWER_DOMAIN_PORT_DDI_IO_A : | 
|---|
| 1423 | POWER_DOMAIN_PORT_DDI_IO_B, | 
|---|
| 1424 | wakeref); | 
|---|
| 1425 | } | 
|---|
| 1426 |  | 
|---|
| 1427 | /* set mode to DDI */ | 
|---|
| 1428 | for_each_dsi_port(port, intel_dsi->ports) | 
|---|
| 1429 | intel_de_rmw(display, ICL_DSI_IO_MODECTL(port), | 
|---|
| 1430 | COMBO_PHY_MODE_DSI, set: 0); | 
|---|
| 1431 | } | 
|---|
| 1432 |  | 
|---|
| 1433 | static void gen11_dsi_disable(struct intel_atomic_state *state, | 
|---|
| 1434 | struct intel_encoder *encoder, | 
|---|
| 1435 | const struct intel_crtc_state *old_crtc_state, | 
|---|
| 1436 | const struct drm_connector_state *old_conn_state) | 
|---|
| 1437 | { | 
|---|
| 1438 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
|---|
| 1439 |  | 
|---|
| 1440 | intel_panel_unprepare(old_conn_state); | 
|---|
| 1441 |  | 
|---|
| 1442 | /* step1: turn off backlight */ | 
|---|
| 1443 | intel_dsi_vbt_exec_sequence(intel_dsi, seq_id: MIPI_SEQ_BACKLIGHT_OFF); | 
|---|
| 1444 | intel_backlight_disable(old_conn_state); | 
|---|
| 1445 | } | 
|---|
| 1446 |  | 
|---|
| 1447 | static void gen11_dsi_post_disable(struct intel_atomic_state *state, | 
|---|
| 1448 | struct intel_encoder *encoder, | 
|---|
| 1449 | const struct intel_crtc_state *old_crtc_state, | 
|---|
| 1450 | const struct drm_connector_state *old_conn_state) | 
|---|
| 1451 | { | 
|---|
| 1452 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
|---|
| 1453 | struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc); | 
|---|
| 1454 |  | 
|---|
| 1455 | intel_crtc_vblank_off(crtc_state: old_crtc_state); | 
|---|
| 1456 |  | 
|---|
| 1457 | /* step2d,e: disable transcoder and wait */ | 
|---|
| 1458 | gen11_dsi_disable_transcoder(encoder); | 
|---|
| 1459 |  | 
|---|
| 1460 | /* Wa_1409054076:icl,jsl,ehl */ | 
|---|
| 1461 | icl_apply_kvmr_pipe_a_wa(encoder, pipe: crtc->pipe, enable: false); | 
|---|
| 1462 |  | 
|---|
| 1463 | /* step2f,g: powerdown panel */ | 
|---|
| 1464 | gen11_dsi_powerdown_panel(encoder); | 
|---|
| 1465 |  | 
|---|
| 1466 | /* step2h,i,j: deconfig trancoder */ | 
|---|
| 1467 | gen11_dsi_deconfigure_trancoder(encoder); | 
|---|
| 1468 |  | 
|---|
| 1469 | intel_dsc_disable(crtc_state: old_crtc_state); | 
|---|
| 1470 | skl_scaler_disable(old_crtc_state); | 
|---|
| 1471 |  | 
|---|
| 1472 | /* step3: disable port */ | 
|---|
| 1473 | gen11_dsi_disable_port(encoder); | 
|---|
| 1474 |  | 
|---|
| 1475 | gen11_dsi_config_util_pin(encoder, enable: false); | 
|---|
| 1476 |  | 
|---|
| 1477 | /* step4: disable IO power */ | 
|---|
| 1478 | gen11_dsi_disable_io_power(encoder); | 
|---|
| 1479 |  | 
|---|
| 1480 | intel_dsi_vbt_exec_sequence(intel_dsi, seq_id: MIPI_SEQ_ASSERT_RESET); | 
|---|
| 1481 |  | 
|---|
| 1482 | msleep(msecs: intel_dsi->panel_off_delay); | 
|---|
| 1483 | intel_dsi_vbt_exec_sequence(intel_dsi, seq_id: MIPI_SEQ_POWER_OFF); | 
|---|
| 1484 |  | 
|---|
| 1485 | intel_dsi->panel_power_off_time = ktime_get_boottime(); | 
|---|
| 1486 | } | 
|---|
| 1487 |  | 
|---|
| 1488 | static enum drm_mode_status gen11_dsi_mode_valid(struct drm_connector *connector, | 
|---|
| 1489 | const struct drm_display_mode *mode) | 
|---|
| 1490 | { | 
|---|
| 1491 | struct intel_display *display = to_intel_display(connector->dev); | 
|---|
| 1492 | enum drm_mode_status status; | 
|---|
| 1493 |  | 
|---|
| 1494 | status = intel_cpu_transcoder_mode_valid(display, mode); | 
|---|
| 1495 | if (status != MODE_OK) | 
|---|
| 1496 | return status; | 
|---|
| 1497 |  | 
|---|
| 1498 | /* FIXME: DSC? */ | 
|---|
| 1499 | return intel_dsi_mode_valid(connector, mode); | 
|---|
| 1500 | } | 
|---|
| 1501 |  | 
|---|
| 1502 | static void gen11_dsi_get_timings(struct intel_encoder *encoder, | 
|---|
| 1503 | struct intel_crtc_state *pipe_config) | 
|---|
| 1504 | { | 
|---|
| 1505 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
|---|
| 1506 | struct drm_display_mode *adjusted_mode = | 
|---|
| 1507 | &pipe_config->hw.adjusted_mode; | 
|---|
| 1508 |  | 
|---|
| 1509 | if (pipe_config->dsc.compressed_bpp_x16) { | 
|---|
| 1510 | int div = fxp_q4_to_int(val_q4: pipe_config->dsc.compressed_bpp_x16); | 
|---|
| 1511 | int mul = mipi_dsi_pixel_format_to_bpp(fmt: intel_dsi->pixel_format); | 
|---|
| 1512 |  | 
|---|
| 1513 | adjusted_mode->crtc_htotal = | 
|---|
| 1514 | DIV_ROUND_UP(adjusted_mode->crtc_htotal * mul, div); | 
|---|
| 1515 | adjusted_mode->crtc_hsync_start = | 
|---|
| 1516 | DIV_ROUND_UP(adjusted_mode->crtc_hsync_start * mul, div); | 
|---|
| 1517 | adjusted_mode->crtc_hsync_end = | 
|---|
| 1518 | DIV_ROUND_UP(adjusted_mode->crtc_hsync_end * mul, div); | 
|---|
| 1519 | } | 
|---|
| 1520 |  | 
|---|
| 1521 | if (intel_dsi->dual_link) { | 
|---|
| 1522 | adjusted_mode->crtc_hdisplay *= 2; | 
|---|
| 1523 | if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK) | 
|---|
| 1524 | adjusted_mode->crtc_hdisplay -= | 
|---|
| 1525 | intel_dsi->pixel_overlap; | 
|---|
| 1526 | adjusted_mode->crtc_htotal *= 2; | 
|---|
| 1527 | } | 
|---|
| 1528 | adjusted_mode->crtc_hblank_start = adjusted_mode->crtc_hdisplay; | 
|---|
| 1529 | adjusted_mode->crtc_hblank_end = adjusted_mode->crtc_htotal; | 
|---|
| 1530 |  | 
|---|
| 1531 | if (intel_dsi->operation_mode == INTEL_DSI_VIDEO_MODE) { | 
|---|
| 1532 | if (intel_dsi->dual_link) { | 
|---|
| 1533 | adjusted_mode->crtc_hsync_start *= 2; | 
|---|
| 1534 | adjusted_mode->crtc_hsync_end *= 2; | 
|---|
| 1535 | } | 
|---|
| 1536 | } | 
|---|
| 1537 | adjusted_mode->crtc_vblank_start = adjusted_mode->crtc_vdisplay; | 
|---|
| 1538 | adjusted_mode->crtc_vblank_end = adjusted_mode->crtc_vtotal; | 
|---|
| 1539 | } | 
|---|
| 1540 |  | 
|---|
| 1541 | static bool gen11_dsi_is_periodic_cmd_mode(struct intel_dsi *intel_dsi) | 
|---|
| 1542 | { | 
|---|
| 1543 | struct intel_display *display = to_intel_display(&intel_dsi->base); | 
|---|
| 1544 | enum transcoder dsi_trans; | 
|---|
| 1545 | u32 val; | 
|---|
| 1546 |  | 
|---|
| 1547 | if (intel_dsi->ports == BIT(PORT_B)) | 
|---|
| 1548 | dsi_trans = TRANSCODER_DSI_1; | 
|---|
| 1549 | else | 
|---|
| 1550 | dsi_trans = TRANSCODER_DSI_0; | 
|---|
| 1551 |  | 
|---|
| 1552 | val = intel_de_read(display, DSI_TRANS_FUNC_CONF(dsi_trans)); | 
|---|
| 1553 | return (val & DSI_PERIODIC_FRAME_UPDATE_ENABLE); | 
|---|
| 1554 | } | 
|---|
| 1555 |  | 
|---|
| 1556 | static void gen11_dsi_get_cmd_mode_config(struct intel_dsi *intel_dsi, | 
|---|
| 1557 | struct intel_crtc_state *pipe_config) | 
|---|
| 1558 | { | 
|---|
| 1559 | if (intel_dsi->ports == (BIT(PORT_B) | BIT(PORT_A))) | 
|---|
| 1560 | pipe_config->mode_flags |= I915_MODE_FLAG_DSI_USE_TE1 | | 
|---|
| 1561 | I915_MODE_FLAG_DSI_USE_TE0; | 
|---|
| 1562 | else if (intel_dsi->ports == BIT(PORT_B)) | 
|---|
| 1563 | pipe_config->mode_flags |= I915_MODE_FLAG_DSI_USE_TE1; | 
|---|
| 1564 | else | 
|---|
| 1565 | pipe_config->mode_flags |= I915_MODE_FLAG_DSI_USE_TE0; | 
|---|
| 1566 | } | 
|---|
| 1567 |  | 
|---|
| 1568 | static void gen11_dsi_get_config(struct intel_encoder *encoder, | 
|---|
| 1569 | struct intel_crtc_state *pipe_config) | 
|---|
| 1570 | { | 
|---|
| 1571 | struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc); | 
|---|
| 1572 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
|---|
| 1573 |  | 
|---|
| 1574 | intel_ddi_get_clock(encoder, crtc_state: pipe_config, pll: icl_ddi_combo_get_pll(encoder)); | 
|---|
| 1575 |  | 
|---|
| 1576 | pipe_config->hw.adjusted_mode.crtc_clock = intel_dsi->pclk; | 
|---|
| 1577 | if (intel_dsi->dual_link) | 
|---|
| 1578 | pipe_config->hw.adjusted_mode.crtc_clock *= 2; | 
|---|
| 1579 |  | 
|---|
| 1580 | gen11_dsi_get_timings(encoder, pipe_config); | 
|---|
| 1581 | pipe_config->output_types |= BIT(INTEL_OUTPUT_DSI); | 
|---|
| 1582 | pipe_config->pipe_bpp = bdw_get_pipe_misc_bpp(crtc); | 
|---|
| 1583 |  | 
|---|
| 1584 | /* Get the details on which TE should be enabled */ | 
|---|
| 1585 | if (is_cmd_mode(intel_dsi)) | 
|---|
| 1586 | gen11_dsi_get_cmd_mode_config(intel_dsi, pipe_config); | 
|---|
| 1587 |  | 
|---|
| 1588 | if (gen11_dsi_is_periodic_cmd_mode(intel_dsi)) | 
|---|
| 1589 | pipe_config->mode_flags |= I915_MODE_FLAG_DSI_PERIODIC_CMD_MODE; | 
|---|
| 1590 | } | 
|---|
| 1591 |  | 
|---|
| 1592 | static void gen11_dsi_sync_state(struct intel_encoder *encoder, | 
|---|
| 1593 | const struct intel_crtc_state *crtc_state) | 
|---|
| 1594 | { | 
|---|
| 1595 | struct intel_display *display = to_intel_display(encoder); | 
|---|
| 1596 | struct intel_crtc *intel_crtc; | 
|---|
| 1597 | enum pipe pipe; | 
|---|
| 1598 |  | 
|---|
| 1599 | if (!crtc_state) | 
|---|
| 1600 | return; | 
|---|
| 1601 |  | 
|---|
| 1602 | intel_crtc = to_intel_crtc(crtc_state->uapi.crtc); | 
|---|
| 1603 | pipe = intel_crtc->pipe; | 
|---|
| 1604 |  | 
|---|
| 1605 | /* wa verify 1409054076:icl,jsl,ehl */ | 
|---|
| 1606 | if (DISPLAY_VER(display) == 11 && pipe == PIPE_B && | 
|---|
| 1607 | !(intel_de_read(display, CHICKEN_PAR1_1) & IGNORE_KVMR_PIPE_A)) | 
|---|
| 1608 | drm_dbg_kms(display->drm, | 
|---|
| 1609 | "[ENCODER:%d:%s] BIOS left IGNORE_KVMR_PIPE_A cleared with pipe B enabled\n", | 
|---|
| 1610 | encoder->base.base.id, | 
|---|
| 1611 | encoder->base.name); | 
|---|
| 1612 | } | 
|---|
| 1613 |  | 
|---|
| 1614 | static int gen11_dsi_dsc_compute_config(struct intel_encoder *encoder, | 
|---|
| 1615 | struct intel_crtc_state *crtc_state) | 
|---|
| 1616 | { | 
|---|
| 1617 | struct intel_display *display = to_intel_display(encoder); | 
|---|
| 1618 | struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config; | 
|---|
| 1619 | int dsc_max_bpc = DISPLAY_VER(display) >= 12 ? 12 : 10; | 
|---|
| 1620 | bool use_dsc; | 
|---|
| 1621 | int ret; | 
|---|
| 1622 |  | 
|---|
| 1623 | use_dsc = intel_bios_get_dsc_params(encoder, crtc_state, dsc_max_bpc); | 
|---|
| 1624 | if (!use_dsc) | 
|---|
| 1625 | return 0; | 
|---|
| 1626 |  | 
|---|
| 1627 | if (crtc_state->pipe_bpp < 8 * 3) | 
|---|
| 1628 | return -EINVAL; | 
|---|
| 1629 |  | 
|---|
| 1630 | /* FIXME: split only when necessary */ | 
|---|
| 1631 | if (crtc_state->dsc.slice_count > 1) | 
|---|
| 1632 | crtc_state->dsc.num_streams = 2; | 
|---|
| 1633 | else | 
|---|
| 1634 | crtc_state->dsc.num_streams = 1; | 
|---|
| 1635 |  | 
|---|
| 1636 | /* FIXME: initialize from VBT */ | 
|---|
| 1637 | vdsc_cfg->rc_model_size = DSC_RC_MODEL_SIZE_CONST; | 
|---|
| 1638 |  | 
|---|
| 1639 | vdsc_cfg->pic_height = crtc_state->hw.adjusted_mode.crtc_vdisplay; | 
|---|
| 1640 |  | 
|---|
| 1641 | ret = intel_dsc_compute_params(pipe_config: crtc_state); | 
|---|
| 1642 | if (ret) | 
|---|
| 1643 | return ret; | 
|---|
| 1644 |  | 
|---|
| 1645 | /* DSI specific sanity checks on the common code */ | 
|---|
| 1646 | drm_WARN_ON(display->drm, vdsc_cfg->vbr_enable); | 
|---|
| 1647 | drm_WARN_ON(display->drm, vdsc_cfg->simple_422); | 
|---|
| 1648 | drm_WARN_ON(display->drm, | 
|---|
| 1649 | vdsc_cfg->pic_width % vdsc_cfg->slice_width); | 
|---|
| 1650 | drm_WARN_ON(display->drm, vdsc_cfg->slice_height < 8); | 
|---|
| 1651 | drm_WARN_ON(display->drm, | 
|---|
| 1652 | vdsc_cfg->pic_height % vdsc_cfg->slice_height); | 
|---|
| 1653 |  | 
|---|
| 1654 | ret = drm_dsc_compute_rc_parameters(vdsc_cfg); | 
|---|
| 1655 | if (ret) | 
|---|
| 1656 | return ret; | 
|---|
| 1657 |  | 
|---|
| 1658 | crtc_state->dsc.compression_enable = true; | 
|---|
| 1659 |  | 
|---|
| 1660 | return 0; | 
|---|
| 1661 | } | 
|---|
| 1662 |  | 
|---|
| 1663 | static int gen11_dsi_compute_config(struct intel_encoder *encoder, | 
|---|
| 1664 | struct intel_crtc_state *pipe_config, | 
|---|
| 1665 | struct drm_connector_state *conn_state) | 
|---|
| 1666 | { | 
|---|
| 1667 | struct intel_display *display = to_intel_display(encoder); | 
|---|
| 1668 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
|---|
| 1669 | struct intel_connector *intel_connector = intel_dsi->attached_connector; | 
|---|
| 1670 | struct drm_display_mode *adjusted_mode = | 
|---|
| 1671 | &pipe_config->hw.adjusted_mode; | 
|---|
| 1672 | int ret; | 
|---|
| 1673 |  | 
|---|
| 1674 | pipe_config->sink_format = INTEL_OUTPUT_FORMAT_RGB; | 
|---|
| 1675 | pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB; | 
|---|
| 1676 |  | 
|---|
| 1677 | ret = intel_panel_compute_config(connector: intel_connector, adjusted_mode); | 
|---|
| 1678 | if (ret) | 
|---|
| 1679 | return ret; | 
|---|
| 1680 |  | 
|---|
| 1681 | ret = intel_pfit_compute_config(crtc_state: pipe_config, conn_state); | 
|---|
| 1682 | if (ret) | 
|---|
| 1683 | return ret; | 
|---|
| 1684 |  | 
|---|
| 1685 | adjusted_mode->flags = 0; | 
|---|
| 1686 |  | 
|---|
| 1687 | /* Dual link goes to trancoder DSI'0' */ | 
|---|
| 1688 | if (intel_dsi->ports == BIT(PORT_B)) | 
|---|
| 1689 | pipe_config->cpu_transcoder = TRANSCODER_DSI_1; | 
|---|
| 1690 | else | 
|---|
| 1691 | pipe_config->cpu_transcoder = TRANSCODER_DSI_0; | 
|---|
| 1692 |  | 
|---|
| 1693 | if (intel_dsi->pixel_format == MIPI_DSI_FMT_RGB888) | 
|---|
| 1694 | pipe_config->pipe_bpp = 24; | 
|---|
| 1695 | else | 
|---|
| 1696 | pipe_config->pipe_bpp = 18; | 
|---|
| 1697 |  | 
|---|
| 1698 | pipe_config->clock_set = true; | 
|---|
| 1699 |  | 
|---|
| 1700 | if (gen11_dsi_dsc_compute_config(encoder, crtc_state: pipe_config)) | 
|---|
| 1701 | drm_dbg_kms(display->drm, "Attempting to use DSC failed\n"); | 
|---|
| 1702 |  | 
|---|
| 1703 | pipe_config->port_clock = afe_clk(encoder, crtc_state: pipe_config) / 5; | 
|---|
| 1704 |  | 
|---|
| 1705 | /* | 
|---|
| 1706 | * In case of TE GATE cmd mode, we | 
|---|
| 1707 | * receive TE from the slave if | 
|---|
| 1708 | * dual link is enabled | 
|---|
| 1709 | */ | 
|---|
| 1710 | if (is_cmd_mode(intel_dsi)) | 
|---|
| 1711 | gen11_dsi_get_cmd_mode_config(intel_dsi, pipe_config); | 
|---|
| 1712 |  | 
|---|
| 1713 | return 0; | 
|---|
| 1714 | } | 
|---|
| 1715 |  | 
|---|
| 1716 | static void gen11_dsi_get_power_domains(struct intel_encoder *encoder, | 
|---|
| 1717 | struct intel_crtc_state *crtc_state) | 
|---|
| 1718 | { | 
|---|
| 1719 | get_dsi_io_power_domains(intel_dsi: enc_to_intel_dsi(encoder)); | 
|---|
| 1720 | } | 
|---|
| 1721 |  | 
|---|
| 1722 | static bool gen11_dsi_get_hw_state(struct intel_encoder *encoder, | 
|---|
| 1723 | enum pipe *pipe) | 
|---|
| 1724 | { | 
|---|
| 1725 | struct intel_display *display = to_intel_display(encoder); | 
|---|
| 1726 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | 
|---|
| 1727 | enum transcoder dsi_trans; | 
|---|
| 1728 | intel_wakeref_t wakeref; | 
|---|
| 1729 | enum port port; | 
|---|
| 1730 | bool ret = false; | 
|---|
| 1731 | u32 tmp; | 
|---|
| 1732 |  | 
|---|
| 1733 | wakeref = intel_display_power_get_if_enabled(display, | 
|---|
| 1734 | domain: encoder->power_domain); | 
|---|
| 1735 | if (!wakeref) | 
|---|
| 1736 | return false; | 
|---|
| 1737 |  | 
|---|
| 1738 | for_each_dsi_port(port, intel_dsi->ports) { | 
|---|
| 1739 | dsi_trans = dsi_port_to_transcoder(port); | 
|---|
| 1740 | tmp = intel_de_read(display, | 
|---|
| 1741 | TRANS_DDI_FUNC_CTL(display, dsi_trans)); | 
|---|
| 1742 | switch (tmp & TRANS_DDI_EDP_INPUT_MASK) { | 
|---|
| 1743 | case TRANS_DDI_EDP_INPUT_A_ON: | 
|---|
| 1744 | *pipe = PIPE_A; | 
|---|
| 1745 | break; | 
|---|
| 1746 | case TRANS_DDI_EDP_INPUT_B_ONOFF: | 
|---|
| 1747 | *pipe = PIPE_B; | 
|---|
| 1748 | break; | 
|---|
| 1749 | case TRANS_DDI_EDP_INPUT_C_ONOFF: | 
|---|
| 1750 | *pipe = PIPE_C; | 
|---|
| 1751 | break; | 
|---|
| 1752 | case TRANS_DDI_EDP_INPUT_D_ONOFF: | 
|---|
| 1753 | *pipe = PIPE_D; | 
|---|
| 1754 | break; | 
|---|
| 1755 | default: | 
|---|
| 1756 | drm_err(display->drm, "Invalid PIPE input\n"); | 
|---|
| 1757 | goto out; | 
|---|
| 1758 | } | 
|---|
| 1759 |  | 
|---|
| 1760 | tmp = intel_de_read(display, TRANSCONF(display, dsi_trans)); | 
|---|
| 1761 | ret = tmp & TRANSCONF_ENABLE; | 
|---|
| 1762 | } | 
|---|
| 1763 | out: | 
|---|
| 1764 | intel_display_power_put(display, domain: encoder->power_domain, wakeref); | 
|---|
| 1765 | return ret; | 
|---|
| 1766 | } | 
|---|
| 1767 |  | 
|---|
| 1768 | static bool gen11_dsi_initial_fastset_check(struct intel_encoder *encoder, | 
|---|
| 1769 | struct intel_crtc_state *crtc_state) | 
|---|
| 1770 | { | 
|---|
| 1771 | if (crtc_state->dsc.compression_enable) { | 
|---|
| 1772 | drm_dbg_kms(encoder->base.dev, "Forcing full modeset due to DSC being enabled\n"); | 
|---|
| 1773 | crtc_state->uapi.mode_changed = true; | 
|---|
| 1774 |  | 
|---|
| 1775 | return false; | 
|---|
| 1776 | } | 
|---|
| 1777 |  | 
|---|
| 1778 | return true; | 
|---|
| 1779 | } | 
|---|
| 1780 |  | 
|---|
| 1781 | static void gen11_dsi_encoder_destroy(struct drm_encoder *encoder) | 
|---|
| 1782 | { | 
|---|
| 1783 | intel_encoder_destroy(encoder); | 
|---|
| 1784 | } | 
|---|
| 1785 |  | 
|---|
| 1786 | static const struct drm_encoder_funcs gen11_dsi_encoder_funcs = { | 
|---|
| 1787 | .destroy = gen11_dsi_encoder_destroy, | 
|---|
| 1788 | }; | 
|---|
| 1789 |  | 
|---|
| 1790 | static const struct drm_connector_funcs gen11_dsi_connector_funcs = { | 
|---|
| 1791 | .detect = intel_panel_detect, | 
|---|
| 1792 | .late_register = intel_connector_register, | 
|---|
| 1793 | .early_unregister = intel_connector_unregister, | 
|---|
| 1794 | .destroy = intel_connector_destroy, | 
|---|
| 1795 | .fill_modes = drm_helper_probe_single_connector_modes, | 
|---|
| 1796 | .atomic_get_property = intel_digital_connector_atomic_get_property, | 
|---|
| 1797 | .atomic_set_property = intel_digital_connector_atomic_set_property, | 
|---|
| 1798 | .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, | 
|---|
| 1799 | .atomic_duplicate_state = intel_digital_connector_duplicate_state, | 
|---|
| 1800 | }; | 
|---|
| 1801 |  | 
|---|
| 1802 | static const struct drm_connector_helper_funcs gen11_dsi_connector_helper_funcs = { | 
|---|
| 1803 | .get_modes = intel_dsi_get_modes, | 
|---|
| 1804 | .mode_valid = gen11_dsi_mode_valid, | 
|---|
| 1805 | .atomic_check = intel_digital_connector_atomic_check, | 
|---|
| 1806 | }; | 
|---|
| 1807 |  | 
|---|
| 1808 | static int gen11_dsi_host_attach(struct mipi_dsi_host *host, | 
|---|
| 1809 | struct mipi_dsi_device *dsi) | 
|---|
| 1810 | { | 
|---|
| 1811 | return 0; | 
|---|
| 1812 | } | 
|---|
| 1813 |  | 
|---|
| 1814 | static int gen11_dsi_host_detach(struct mipi_dsi_host *host, | 
|---|
| 1815 | struct mipi_dsi_device *dsi) | 
|---|
| 1816 | { | 
|---|
| 1817 | return 0; | 
|---|
| 1818 | } | 
|---|
| 1819 |  | 
|---|
| 1820 | static ssize_t gen11_dsi_host_transfer(struct mipi_dsi_host *host, | 
|---|
| 1821 | const struct mipi_dsi_msg *msg) | 
|---|
| 1822 | { | 
|---|
| 1823 | struct intel_dsi_host *intel_dsi_host = to_intel_dsi_host(h: host); | 
|---|
| 1824 | struct mipi_dsi_packet dsi_pkt; | 
|---|
| 1825 | ssize_t ret; | 
|---|
| 1826 | bool enable_lpdt = false; | 
|---|
| 1827 |  | 
|---|
| 1828 | ret = mipi_dsi_create_packet(packet: &dsi_pkt, msg); | 
|---|
| 1829 | if (ret < 0) | 
|---|
| 1830 | return ret; | 
|---|
| 1831 |  | 
|---|
| 1832 | if (msg->flags & MIPI_DSI_MSG_USE_LPM) | 
|---|
| 1833 | enable_lpdt = true; | 
|---|
| 1834 |  | 
|---|
| 1835 | /* only long packet contains payload */ | 
|---|
| 1836 | if (mipi_dsi_packet_format_is_long(type: msg->type)) { | 
|---|
| 1837 | ret = dsi_send_pkt_payld(host: intel_dsi_host, packet: &dsi_pkt); | 
|---|
| 1838 | if (ret < 0) | 
|---|
| 1839 | return ret; | 
|---|
| 1840 | } | 
|---|
| 1841 |  | 
|---|
| 1842 | /* send packet header */ | 
|---|
| 1843 | ret  = dsi_send_pkt_hdr(host: intel_dsi_host, packet: &dsi_pkt, enable_lpdt); | 
|---|
| 1844 | if (ret < 0) | 
|---|
| 1845 | return ret; | 
|---|
| 1846 |  | 
|---|
| 1847 | //TODO: add payload receive code if needed | 
|---|
| 1848 |  | 
|---|
| 1849 | ret = sizeof(dsi_pkt.header) + dsi_pkt.payload_length; | 
|---|
| 1850 |  | 
|---|
| 1851 | return ret; | 
|---|
| 1852 | } | 
|---|
| 1853 |  | 
|---|
| 1854 | static const struct mipi_dsi_host_ops gen11_dsi_host_ops = { | 
|---|
| 1855 | .attach = gen11_dsi_host_attach, | 
|---|
| 1856 | .detach = gen11_dsi_host_detach, | 
|---|
| 1857 | .transfer = gen11_dsi_host_transfer, | 
|---|
| 1858 | }; | 
|---|
| 1859 |  | 
|---|
| 1860 | static void icl_dphy_param_init(struct intel_dsi *intel_dsi) | 
|---|
| 1861 | { | 
|---|
| 1862 | struct intel_connector *connector = intel_dsi->attached_connector; | 
|---|
| 1863 | struct mipi_config *mipi_config = connector->panel.vbt.dsi.config; | 
|---|
| 1864 | u32 tlpx_ns; | 
|---|
| 1865 | u32 tclk_prepare_esc_clk, tclk_zero_esc_clk, tclk_pre_esc_clk; | 
|---|
| 1866 | u32 ths_prepare_esc_clk, ths_zero_esc_clk, ths_exit_esc_clk; | 
|---|
| 1867 |  | 
|---|
| 1868 | tlpx_ns = intel_dsi_tlpx_ns(intel_dsi); | 
|---|
| 1869 |  | 
|---|
| 1870 | /* | 
|---|
| 1871 | * The clock and data lane prepare timing parameters are in expressed in | 
|---|
| 1872 | * units of 1/4 escape clocks, and all the other timings parameters in | 
|---|
| 1873 | * escape clocks. | 
|---|
| 1874 | */ | 
|---|
| 1875 | tclk_prepare_esc_clk = DIV_ROUND_UP(mipi_config->tclk_prepare * 4, tlpx_ns); | 
|---|
| 1876 | tclk_prepare_esc_clk = min(tclk_prepare_esc_clk, 7); | 
|---|
| 1877 |  | 
|---|
| 1878 | tclk_zero_esc_clk = DIV_ROUND_UP(mipi_config->tclk_prepare_clkzero - | 
|---|
| 1879 | mipi_config->tclk_prepare, tlpx_ns); | 
|---|
| 1880 | tclk_zero_esc_clk = min(tclk_zero_esc_clk, 15); | 
|---|
| 1881 |  | 
|---|
| 1882 | tclk_pre_esc_clk = DIV_ROUND_UP(mipi_config->tclk_pre, tlpx_ns); | 
|---|
| 1883 | tclk_pre_esc_clk = min(tclk_pre_esc_clk, 3); | 
|---|
| 1884 |  | 
|---|
| 1885 | ths_prepare_esc_clk = DIV_ROUND_UP(mipi_config->ths_prepare * 4, tlpx_ns); | 
|---|
| 1886 | ths_prepare_esc_clk = min(ths_prepare_esc_clk, 7); | 
|---|
| 1887 |  | 
|---|
| 1888 | ths_zero_esc_clk = DIV_ROUND_UP(mipi_config->ths_prepare_hszero - | 
|---|
| 1889 | mipi_config->ths_prepare, tlpx_ns); | 
|---|
| 1890 | ths_zero_esc_clk = min(ths_zero_esc_clk, 15); | 
|---|
| 1891 |  | 
|---|
| 1892 | ths_exit_esc_clk = DIV_ROUND_UP(mipi_config->ths_exit, tlpx_ns); | 
|---|
| 1893 | ths_exit_esc_clk = min(ths_exit_esc_clk, 7); | 
|---|
| 1894 |  | 
|---|
| 1895 | /* clock lane dphy timings */ | 
|---|
| 1896 | intel_dsi->dphy_reg = (CLK_PREPARE_OVERRIDE | | 
|---|
| 1897 | CLK_PREPARE(tclk_prepare_esc_clk) | | 
|---|
| 1898 | CLK_ZERO_OVERRIDE | | 
|---|
| 1899 | CLK_ZERO(tclk_zero_esc_clk) | | 
|---|
| 1900 | CLK_PRE_OVERRIDE | | 
|---|
| 1901 | CLK_PRE(tclk_pre_esc_clk)); | 
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| 1902 |  | 
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| 1903 | /* data lanes dphy timings */ | 
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| 1904 | intel_dsi->dphy_data_lane_reg = (HS_PREPARE_OVERRIDE | | 
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| 1905 | HS_PREPARE(ths_prepare_esc_clk) | | 
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| 1906 | HS_ZERO_OVERRIDE | | 
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| 1907 | HS_ZERO(ths_zero_esc_clk) | | 
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| 1908 | HS_EXIT_OVERRIDE | | 
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| 1909 | HS_EXIT(ths_exit_esc_clk)); | 
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| 1910 |  | 
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| 1911 | intel_dsi_log_params(intel_dsi); | 
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| 1912 | } | 
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| 1913 |  | 
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| 1914 | static void icl_dsi_add_properties(struct intel_connector *connector) | 
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| 1915 | { | 
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| 1916 | const struct drm_display_mode *fixed_mode = | 
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| 1917 | intel_panel_preferred_fixed_mode(connector); | 
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| 1918 |  | 
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| 1919 | intel_attach_scaling_mode_property(connector: &connector->base); | 
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| 1920 |  | 
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| 1921 | drm_connector_set_panel_orientation_with_quirk(connector: &connector->base, | 
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| 1922 | panel_orientation: intel_dsi_get_panel_orientation(connector), | 
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| 1923 | width: fixed_mode->hdisplay, | 
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| 1924 | height: fixed_mode->vdisplay); | 
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| 1925 | } | 
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| 1926 |  | 
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| 1927 | void icl_dsi_init(struct intel_display *display, | 
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| 1928 | const struct intel_bios_encoder_data *devdata) | 
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| 1929 | { | 
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| 1930 | struct intel_dsi *intel_dsi; | 
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| 1931 | struct intel_encoder *encoder; | 
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| 1932 | struct intel_connector *intel_connector; | 
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| 1933 | struct drm_connector *connector; | 
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| 1934 | enum port port; | 
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| 1935 |  | 
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| 1936 | port = intel_bios_encoder_port(devdata); | 
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| 1937 | if (port == PORT_NONE) | 
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| 1938 | return; | 
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| 1939 |  | 
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| 1940 | intel_dsi = kzalloc(sizeof(*intel_dsi), GFP_KERNEL); | 
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| 1941 | if (!intel_dsi) | 
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| 1942 | return; | 
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| 1943 |  | 
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| 1944 | intel_connector = intel_connector_alloc(); | 
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| 1945 | if (!intel_connector) { | 
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| 1946 | kfree(objp: intel_dsi); | 
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| 1947 | return; | 
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| 1948 | } | 
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| 1949 |  | 
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| 1950 | encoder = &intel_dsi->base; | 
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| 1951 | intel_dsi->attached_connector = intel_connector; | 
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| 1952 | connector = &intel_connector->base; | 
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| 1953 |  | 
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| 1954 | encoder->devdata = devdata; | 
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| 1955 |  | 
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| 1956 | /* register DSI encoder with DRM subsystem */ | 
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| 1957 | drm_encoder_init(dev: display->drm, encoder: &encoder->base, | 
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| 1958 | funcs: &gen11_dsi_encoder_funcs, | 
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| 1959 | DRM_MODE_ENCODER_DSI, name: "DSI %c", port_name(port)); | 
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| 1960 |  | 
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| 1961 | encoder->pre_pll_enable = gen11_dsi_pre_pll_enable; | 
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| 1962 | encoder->pre_enable = gen11_dsi_pre_enable; | 
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| 1963 | encoder->enable = gen11_dsi_enable; | 
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| 1964 | encoder->disable = gen11_dsi_disable; | 
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| 1965 | encoder->post_disable = gen11_dsi_post_disable; | 
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| 1966 | encoder->port = port; | 
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| 1967 | encoder->get_config = gen11_dsi_get_config; | 
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| 1968 | encoder->sync_state = gen11_dsi_sync_state; | 
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| 1969 | encoder->update_pipe = intel_backlight_update; | 
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| 1970 | encoder->compute_config = gen11_dsi_compute_config; | 
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| 1971 | encoder->get_hw_state = gen11_dsi_get_hw_state; | 
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| 1972 | encoder->initial_fastset_check = gen11_dsi_initial_fastset_check; | 
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| 1973 | encoder->type = INTEL_OUTPUT_DSI; | 
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| 1974 | encoder->cloneable = 0; | 
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| 1975 | encoder->pipe_mask = ~0; | 
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| 1976 | encoder->power_domain = POWER_DOMAIN_PORT_DSI; | 
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| 1977 | encoder->get_power_domains = gen11_dsi_get_power_domains; | 
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| 1978 | encoder->disable_clock = gen11_dsi_gate_clocks; | 
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| 1979 | encoder->is_clock_enabled = gen11_dsi_is_clock_enabled; | 
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| 1980 | encoder->shutdown = intel_dsi_shutdown; | 
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| 1981 |  | 
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| 1982 | /* register DSI connector with DRM subsystem */ | 
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| 1983 | drm_connector_init(dev: display->drm, connector, | 
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| 1984 | funcs: &gen11_dsi_connector_funcs, | 
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| 1985 | DRM_MODE_CONNECTOR_DSI); | 
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| 1986 | drm_connector_helper_add(connector, funcs: &gen11_dsi_connector_helper_funcs); | 
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| 1987 | connector->display_info.subpixel_order = SubPixelHorizontalRGB; | 
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| 1988 | intel_connector->get_hw_state = intel_connector_get_hw_state; | 
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| 1989 |  | 
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| 1990 | /* attach connector to encoder */ | 
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| 1991 | intel_connector_attach_encoder(connector: intel_connector, encoder); | 
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| 1992 |  | 
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| 1993 | intel_dsi->panel_power_off_time = ktime_get_boottime(); | 
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| 1994 |  | 
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| 1995 | intel_bios_init_panel_late(display, panel: &intel_connector->panel, devdata: encoder->devdata, NULL); | 
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| 1996 |  | 
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| 1997 | mutex_lock(lock: &display->drm->mode_config.mutex); | 
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| 1998 | intel_panel_add_vbt_lfp_fixed_mode(connector: intel_connector); | 
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| 1999 | mutex_unlock(lock: &display->drm->mode_config.mutex); | 
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| 2000 |  | 
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| 2001 | if (!intel_panel_preferred_fixed_mode(connector: intel_connector)) { | 
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| 2002 | drm_err(display->drm, "DSI fixed mode info missing\n"); | 
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| 2003 | goto err; | 
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| 2004 | } | 
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| 2005 |  | 
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| 2006 | intel_panel_init(connector: intel_connector, NULL); | 
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| 2007 |  | 
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| 2008 | intel_backlight_setup(connector: intel_connector, pipe: INVALID_PIPE); | 
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| 2009 |  | 
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| 2010 | if (intel_connector->panel.vbt.dsi.config->dual_link) | 
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| 2011 | intel_dsi->ports = BIT(PORT_A) | BIT(PORT_B); | 
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| 2012 | else | 
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| 2013 | intel_dsi->ports = BIT(port); | 
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| 2014 |  | 
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| 2015 | if (drm_WARN_ON(display->drm, intel_connector->panel.vbt.dsi.bl_ports & ~intel_dsi->ports)) | 
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| 2016 | intel_connector->panel.vbt.dsi.bl_ports &= intel_dsi->ports; | 
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| 2017 |  | 
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| 2018 | if (drm_WARN_ON(display->drm, intel_connector->panel.vbt.dsi.cabc_ports & ~intel_dsi->ports)) | 
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| 2019 | intel_connector->panel.vbt.dsi.cabc_ports &= intel_dsi->ports; | 
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| 2020 |  | 
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| 2021 | for_each_dsi_port(port, intel_dsi->ports) { | 
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| 2022 | struct intel_dsi_host *host; | 
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| 2023 |  | 
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| 2024 | host = intel_dsi_host_init(intel_dsi, funcs: &gen11_dsi_host_ops, port); | 
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| 2025 | if (!host) | 
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| 2026 | goto err; | 
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| 2027 |  | 
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| 2028 | intel_dsi->dsi_hosts[port] = host; | 
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| 2029 | } | 
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| 2030 |  | 
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| 2031 | if (!intel_dsi_vbt_init(intel_dsi, MIPI_DSI_GENERIC_PANEL_ID)) { | 
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| 2032 | drm_dbg_kms(display->drm, "no device found\n"); | 
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| 2033 | goto err; | 
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| 2034 | } | 
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| 2035 |  | 
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| 2036 | icl_dphy_param_init(intel_dsi); | 
|---|
| 2037 |  | 
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| 2038 | icl_dsi_add_properties(connector: intel_connector); | 
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| 2039 | return; | 
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| 2040 |  | 
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| 2041 | err: | 
|---|
| 2042 | drm_connector_cleanup(connector); | 
|---|
| 2043 | drm_encoder_cleanup(encoder: &encoder->base); | 
|---|
| 2044 | kfree(objp: intel_dsi); | 
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| 2045 | kfree(objp: intel_connector); | 
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| 2046 | } | 
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| 2047 |  | 
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