1/*
2 * Copyright (c) 2012-2014, The Linux Foundation. All rights reserved.
3
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *   * Redistributions of source code must retain the above copyright
8 *     notice, this list of conditions and the following disclaimer.
9 *   * Redistributions in binary form must reproduce the above
10 *     copyright notice, this list of conditions and the following
11 *     disclaimer in the documentation and/or other materials provided
12 *     with the distribution.
13 *   * Neither the name of The Linux Foundation nor the names of its
14 *     contributors may be used to endorse or promote products derived
15 *     from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
24 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
26 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29#include <cutils/log.h>
30#include <linux/msm_mdp.h>
31#include "mdp_version.h"
32#include "qd_utils.h"
33
34#define DEBUG 0
35
36ANDROID_SINGLETON_STATIC_INSTANCE(qdutils::MDPVersion);
37namespace qdutils {
38
39#define TOKEN_PARAMS_DELIM  "="
40
41// chip variants have same major number and minor numbers usually vary
42// for e.g., MDSS_MDP_HW_REV_101 is 0x10010000
43//                                    1001       -  major number
44//                                        0000   -  minor number
45// 8x26 v1 minor number is 0000
46//      v2 minor number is 0001 etc..
47#ifndef MDSS_MDP_HW_REV_100
48#define MDSS_MDP_HW_REV_100 0x10000000 //8974 v1
49#endif
50#ifndef MDSS_MDP_HW_REV_101
51#define MDSS_MDP_HW_REV_101 0x10010000 //8x26
52#endif
53#ifndef MDSS_MDP_HW_REV_102
54#define MDSS_MDP_HW_REV_102 0x10020000 //8974 v2
55#endif
56#ifndef MDSS_MDP_HW_REV_103
57#define MDSS_MDP_HW_REV_103 0x10030000 //8084
58#endif
59#ifndef MDSS_MDP_HW_REV_104
60#define MDSS_MDP_HW_REV_104 0x10040000 //Next version
61#endif
62#ifndef MDSS_MDP_HW_REV_105
63#define MDSS_MDP_HW_REV_105 0x10050000 //8994
64#endif
65#ifndef MDSS_MDP_HW_REV_106
66#define MDSS_MDP_HW_REV_106 0x10060000 //8x16
67#endif
68#ifndef MDSS_MDP_HW_REV_107
69#define MDSS_MDP_HW_REV_107 0x10070000 //Next version
70#endif
71#ifndef MDSS_MDP_HW_REV_108
72#define MDSS_MDP_HW_REV_108 0x10080000 //8x39 & 8x36
73#endif
74#ifndef MDSS_MDP_HW_REV_109
75#define MDSS_MDP_HW_REV_109 0x10090000 //Next version
76#endif
77#ifndef MDSS_MDP_HW_REV_200
78#define MDSS_MDP_HW_REV_200 0x20000000 //8092
79#endif
80#ifndef MDSS_MDP_HW_REV_206
81#define MDSS_MDP_HW_REV_206 0x20060000 //Future
82#endif
83
84MDPVersion::MDPVersion()
85{
86    mMDPVersion = MDSS_V5;
87    mMdpRev = 0;
88    mRGBPipes = 0;
89    mVGPipes = 0;
90    mDMAPipes = 0;
91    mFeatures = 0;
92    mMDPUpscale = 1;
93    mMDPDownscale = 1;
94    mMacroTileEnabled = false;
95    mLowBw = 0;
96    mHighBw = 0;
97    mSourceSplit = false;
98    mSourceSplitAlways = false;
99    mRGBHasNoScalar = false;
100    mRotDownscale = false;
101
102    // this is the default limit of mixer unless driver reports it.
103    // For resolutions beyond this, we use dual/split overlay pipes.
104    mMaxMixerWidth = 2048;
105
106    updatePanelInfo();
107
108    if(!updateSysFsInfo()) {
109        ALOGE("Unable to read display sysfs node");
110    }
111    if (mMdpRev == MDP_V3_0_4){
112        mMDPVersion = MDP_V3_0_4;
113    }
114    else if (mMdpRev == MDP_V3_0_5){
115        mMDPVersion = MDP_V3_0_5;
116    }
117
118    mHasOverlay = false;
119    if((mMDPVersion >= MDP_V4_0) ||
120       (mMDPVersion == MDP_V_UNKNOWN) ||
121       (mMDPVersion == MDP_V3_0_4) ||
122       (mMDPVersion == MDP_V3_0_5))
123        mHasOverlay = true;
124    if(!updateSplitInfo()) {
125        ALOGE("Unable to read display split node");
126    }
127}
128
129MDPVersion::~MDPVersion() {
130    close(mFd);
131}
132
133int MDPVersion::tokenizeParams(char *inputParams, const char *delim,
134                                char* tokenStr[], int *idx) {
135    char *tmp_token = NULL;
136    char *temp_ptr;
137    int index = 0;
138    if (!inputParams) {
139        return -1;
140    }
141    tmp_token = strtok_r(inputParams, delim, &temp_ptr);
142    while (tmp_token != NULL) {
143        tokenStr[index++] = tmp_token;
144        tmp_token = strtok_r(NULL, " ", &temp_ptr);
145    }
146    *idx = index;
147    return 0;
148}
149// This function reads the sysfs node to read the primary panel type
150// and updates information accordingly
151void  MDPVersion::updatePanelInfo() {
152    FILE *displayDeviceFP = NULL;
153    FILE *panelInfoNodeFP = NULL;
154    char fbType[MAX_FRAME_BUFFER_NAME_SIZE];
155    const char *strCmdPanel = "mipi dsi cmd panel";
156    const char *strVideoPanel = "mipi dsi video panel";
157    const char *strLVDSPanel = "lvds panel";
158    const char *strEDPPanel = "edp panel";
159
160    displayDeviceFP = fopen("/sys/class/graphics/fb0/msm_fb_type", "r");
161    if(displayDeviceFP){
162        fread(fbType, sizeof(char), MAX_FRAME_BUFFER_NAME_SIZE,
163                displayDeviceFP);
164        if(strncmp(fbType, strCmdPanel, strlen(strCmdPanel)) == 0) {
165            mPanelInfo.mType = MIPI_CMD_PANEL;
166        }
167        else if(strncmp(fbType, strVideoPanel, strlen(strVideoPanel)) == 0) {
168            mPanelInfo.mType = MIPI_VIDEO_PANEL;
169        }
170        else if(strncmp(fbType, strLVDSPanel, strlen(strLVDSPanel)) == 0) {
171            mPanelInfo.mType = LVDS_PANEL;
172        }
173        else if(strncmp(fbType, strEDPPanel, strlen(strEDPPanel)) == 0) {
174            mPanelInfo.mType = EDP_PANEL;
175        }
176        fclose(displayDeviceFP);
177    } else {
178        ALOGE("Unable to read Primary Panel Information");
179    }
180
181    panelInfoNodeFP = fopen("/sys/class/graphics/fb0/msm_fb_panel_info", "r");
182    if(panelInfoNodeFP){
183        size_t len = PAGE_SIZE;
184        ssize_t read;
185        char *readLine = (char *) malloc (len);
186        char property[PROPERTY_VALUE_MAX];
187        while((read = getline((char **)&readLine, &len,
188                              panelInfoNodeFP)) != -1) {
189            int token_ct=0;
190            char *tokens[10];
191            memset(tokens, 0, sizeof(tokens));
192
193            if(!tokenizeParams(readLine, TOKEN_PARAMS_DELIM, tokens,
194                               &token_ct)) {
195                if(!strncmp(tokens[0], "pu_en", strlen("pu_en"))) {
196                    mPanelInfo.mPartialUpdateEnable = atoi(tokens[1]);
197                    ALOGI("PartialUpdate status: %s",
198                          mPanelInfo.mPartialUpdateEnable? "Enabled" :
199                          "Disabled");
200                }
201                if(!strncmp(tokens[0], "xstart", strlen("xstart"))) {
202                    mPanelInfo.mLeftAlign = atoi(tokens[1]);
203                    ALOGI("Left Align: %d", mPanelInfo.mLeftAlign);
204                }
205                if(!strncmp(tokens[0], "walign", strlen("walign"))) {
206                    mPanelInfo.mWidthAlign = atoi(tokens[1]);
207                    ALOGI("Width Align: %d", mPanelInfo.mWidthAlign);
208                }
209                if(!strncmp(tokens[0], "ystart", strlen("ystart"))) {
210                    mPanelInfo.mTopAlign = atoi(tokens[1]);
211                    ALOGI("Top Align: %d", mPanelInfo.mTopAlign);
212                }
213                if(!strncmp(tokens[0], "halign", strlen("halign"))) {
214                    mPanelInfo.mHeightAlign = atoi(tokens[1]);
215                    ALOGI("Height Align: %d", mPanelInfo.mHeightAlign);
216                }
217                if(!strncmp(tokens[0], "min_w", strlen("min_w"))) {
218                    mPanelInfo.mMinROIWidth = atoi(tokens[1]);
219                    ALOGI("Min ROI Width: %d", mPanelInfo.mMinROIWidth);
220                }
221                if(!strncmp(tokens[0], "min_h", strlen("min_h"))) {
222                    mPanelInfo.mMinROIHeight = atoi(tokens[1]);
223                    ALOGI("Min ROI Height: %d", mPanelInfo.mMinROIHeight);
224                }
225                if(!strncmp(tokens[0], "roi_merge", strlen("roi_merge"))) {
226                    mPanelInfo.mNeedsROIMerge = atoi(tokens[1]);
227                    ALOGI("Needs ROI Merge: %d", mPanelInfo.mNeedsROIMerge);
228                }
229                if(!strncmp(tokens[0], "dyn_fps_en", strlen("dyn_fps_en"))) {
230                    mPanelInfo.mDynFpsSupported = atoi(tokens[1]);
231                    ALOGI("Dynamic Fps: %s", mPanelInfo.mDynFpsSupported ?
232                                            "Enabled" : "Disabled");
233                }
234                if(!strncmp(tokens[0], "min_fps", strlen("min_fps"))) {
235                    mPanelInfo.mMinFps = atoi(tokens[1]);
236                    ALOGI("Min Panel fps: %d", mPanelInfo.mMinFps);
237                }
238                if(!strncmp(tokens[0], "max_fps", strlen("max_fps"))) {
239                    mPanelInfo.mMaxFps = atoi(tokens[1]);
240                    ALOGI("Max Panel fps: %d", mPanelInfo.mMaxFps);
241                }
242            }
243        }
244        if((property_get("persist.hwc.pubypass", property, 0) > 0) &&
245            (!strncmp(property, "1", PROPERTY_VALUE_MAX ) ||
246            (!strncasecmp(property,"true", PROPERTY_VALUE_MAX )))) {
247                mPanelInfo.mPartialUpdateEnable = 0;
248                ALOGI("PartialUpdate disabled by property");
249        }
250        fclose(panelInfoNodeFP);
251    } else {
252        ALOGE("Failed to open msm_fb_panel_info node");
253    }
254}
255
256// This function reads the sysfs node to read MDP capabilities
257// and parses and updates information accordingly.
258bool MDPVersion::updateSysFsInfo() {
259    FILE *sysfsFd;
260    size_t len = PAGE_SIZE;
261    ssize_t read;
262    char *line = NULL;
263    char sysfsPath[255];
264    memset(sysfsPath, 0, sizeof(sysfsPath));
265    snprintf(sysfsPath , sizeof(sysfsPath),
266            "/sys/class/graphics/fb0/mdp/caps");
267    char property[PROPERTY_VALUE_MAX];
268    bool enableMacroTile = false;
269
270    if((property_get("persist.hwc.macro_tile_enable", property, NULL) > 0) &&
271       (!strncmp(property, "1", PROPERTY_VALUE_MAX ) ||
272        (!strncasecmp(property,"true", PROPERTY_VALUE_MAX )))) {
273        enableMacroTile = true;
274    }
275
276    sysfsFd = fopen(sysfsPath, "rb");
277
278    if (sysfsFd == NULL) {
279        ALOGE("%s: sysFsFile file '%s' not found",
280                __FUNCTION__, sysfsPath);
281        return false;
282    } else {
283        line = (char *) malloc(len);
284        while((read = getline(&line, &len, sysfsFd)) != -1) {
285            int index=0;
286            char *tokens[10];
287            memset(tokens, 0, sizeof(tokens));
288
289            // parse the line and update information accordingly
290            if(!tokenizeParams(line, TOKEN_PARAMS_DELIM, tokens, &index)) {
291                if(!strncmp(tokens[0], "hw_rev", strlen("hw_rev"))) {
292                    mMdpRev = atoi(tokens[1]);
293                }
294                else if(!strncmp(tokens[0], "rgb_pipes", strlen("rgb_pipes"))) {
295                    mRGBPipes = (uint8_t)atoi(tokens[1]);
296                }
297                else if(!strncmp(tokens[0], "vig_pipes", strlen("vig_pipes"))) {
298                    mVGPipes = (uint8_t)atoi(tokens[1]);
299                }
300                else if(!strncmp(tokens[0], "dma_pipes", strlen("dma_pipes"))) {
301                    mDMAPipes = (uint8_t)atoi(tokens[1]);
302                }
303                else if(!strncmp(tokens[0], "max_downscale_ratio",
304                                strlen("max_downscale_ratio"))) {
305                    mMDPDownscale = atoi(tokens[1]);
306                }
307                else if(!strncmp(tokens[0], "max_upscale_ratio",
308                                strlen("max_upscale_ratio"))) {
309                    mMDPUpscale = atoi(tokens[1]);
310                } else if(!strncmp(tokens[0], "max_bandwidth_low",
311                        strlen("max_bandwidth_low"))) {
312                    mLowBw = atol(tokens[1]);
313                } else if(!strncmp(tokens[0], "max_bandwidth_high",
314                        strlen("max_bandwidth_high"))) {
315                    mHighBw = atol(tokens[1]);
316                } else if(!strncmp(tokens[0], "max_mixer_width",
317                        strlen("max_mixer_width"))) {
318                    mMaxMixerWidth = atoi(tokens[1]);
319                } else if(!strncmp(tokens[0], "features", strlen("features"))) {
320                    for(int i=1; i<index;i++) {
321                        if(!strncmp(tokens[i], "bwc", strlen("bwc"))) {
322                           mFeatures |= MDP_BWC_EN;
323                        } else if(!strncmp(tokens[i], "decimation",
324                                    strlen("decimation"))) {
325                           mFeatures |= MDP_DECIMATION_EN;
326                        } else if(!strncmp(tokens[i], "tile_format",
327                                    strlen("tile_format"))) {
328                           if(enableMacroTile)
329                               mMacroTileEnabled = true;
330                        } else if(!strncmp(tokens[i], "src_split",
331                                    strlen("src_split"))) {
332                            mSourceSplit = true;
333                        } else if(!strncmp(tokens[i], "non_scalar_rgb",
334                                    strlen("non_scalar_rgb"))) {
335                            mRGBHasNoScalar = true;
336                        } else if(!strncmp(tokens[i], "rotator_downscale",
337                                    strlen("rotator_downscale"))) {
338                            mRotDownscale = true;
339                        }
340                    }
341                }
342            }
343        }
344        free(line);
345        fclose(sysfsFd);
346    }
347
348    if(mMDPVersion >= qdutils::MDP_V4_2 and mMDPVersion < qdutils::MDSS_V5) {
349        mRotDownscale = true;
350    }
351
352    if(mSourceSplit) {
353        memset(sysfsPath, 0, sizeof(sysfsPath));
354        snprintf(sysfsPath , sizeof(sysfsPath),
355                "/sys/class/graphics/fb0/msm_fb_src_split_info");
356
357        sysfsFd = fopen(sysfsPath, "rb");
358        if (sysfsFd == NULL) {
359            ALOGE("%s: Opening file %s failed with error %s", __FUNCTION__,
360                    sysfsPath, strerror(errno));
361            return false;
362        } else {
363            line = (char *) malloc(len);
364            if((read = getline(&line, &len, sysfsFd)) != -1) {
365                if(!strncmp(line, "src_split_always",
366                        strlen("src_split_always"))) {
367                    mSourceSplitAlways = true;
368                }
369            }
370            free(line);
371            fclose(sysfsFd);
372        }
373    }
374
375    ALOGD_IF(DEBUG, "%s: mMDPVersion: %d mMdpRev: %x mRGBPipes:%d,"
376                    "mVGPipes:%d", __FUNCTION__, mMDPVersion, mMdpRev,
377                    mRGBPipes, mVGPipes);
378    ALOGD_IF(DEBUG, "%s:mDMAPipes:%d \t mMDPDownscale:%d, mFeatures:%d",
379                     __FUNCTION__,  mDMAPipes, mMDPDownscale, mFeatures);
380    ALOGD_IF(DEBUG, "%s:mLowBw: %lu mHighBw: %lu", __FUNCTION__,  mLowBw,
381            mHighBw);
382
383    return true;
384}
385
386// This function reads the sysfs node to read MDP capabilities
387// and parses and updates information accordingly.
388bool MDPVersion::updateSplitInfo() {
389    if(mMDPVersion >= MDSS_V5) {
390        char split[64] = {0};
391        FILE* fp = fopen("/sys/class/graphics/fb0/msm_fb_split", "r");
392        if(fp){
393            //Format "left right" space as delimiter
394            if(fread(split, sizeof(char), 64, fp)) {
395                split[sizeof(split) - 1] = '\0';
396                mSplit.mLeft = atoi(split);
397                ALOGI_IF(mSplit.mLeft, "Left Split=%d", mSplit.mLeft);
398                char *rght = strpbrk(split, " ");
399                if(rght)
400                    mSplit.mRight = atoi(rght + 1);
401                ALOGI_IF(mSplit.mRight, "Right Split=%d", mSplit.mRight);
402            }
403        } else {
404            ALOGE("Failed to open mdss_fb_split node");
405            return false;
406        }
407        if(fp)
408            fclose(fp);
409    }
410    return true;
411}
412
413
414bool MDPVersion::hasMinCropWidthLimitation() const {
415    return mMdpRev <= MDSS_MDP_HW_REV_102;
416}
417
418bool MDPVersion::supportsDecimation() {
419    return mFeatures & MDP_DECIMATION_EN;
420}
421
422uint32_t MDPVersion::getMaxMDPDownscale() {
423    return mMDPDownscale;
424}
425
426uint32_t MDPVersion::getMaxMDPUpscale() {
427    return mMDPUpscale;
428}
429
430bool MDPVersion::supportsBWC() {
431    // BWC - Bandwidth Compression
432    return (mFeatures & MDP_BWC_EN);
433}
434
435bool MDPVersion::supportsMacroTile() {
436    // MACRO TILE support
437    return mMacroTileEnabled;
438}
439
440bool MDPVersion::isSrcSplit() const {
441    return mSourceSplit;
442}
443
444bool MDPVersion::isSrcSplitAlways() const {
445    return mSourceSplitAlways;
446}
447
448bool MDPVersion::isRGBScalarSupported() const {
449    return (!mRGBHasNoScalar);
450}
451
452bool MDPVersion::is8x26() {
453    return (mMdpRev >= MDSS_MDP_HW_REV_101 and
454            mMdpRev < MDSS_MDP_HW_REV_102);
455}
456
457bool MDPVersion::is8x74v2() {
458    return (mMdpRev >= MDSS_MDP_HW_REV_102 and
459            mMdpRev < MDSS_MDP_HW_REV_103);
460}
461
462bool MDPVersion::is8084() {
463    return (mMdpRev >= MDSS_MDP_HW_REV_103 and
464            mMdpRev < MDSS_MDP_HW_REV_104);
465}
466
467bool MDPVersion::is8092() {
468    return (mMdpRev >= MDSS_MDP_HW_REV_200 and
469            mMdpRev < MDSS_MDP_HW_REV_206);
470}
471
472bool MDPVersion::is8994() {
473    return (mMdpRev >= MDSS_MDP_HW_REV_105 and
474            mMdpRev < MDSS_MDP_HW_REV_106);
475}
476
477bool MDPVersion::is8x16() {
478    return (mMdpRev >= MDSS_MDP_HW_REV_106 and
479            mMdpRev < MDSS_MDP_HW_REV_107);
480}
481
482bool MDPVersion::is8x39() {
483    return (mMdpRev >= MDSS_MDP_HW_REV_108 and
484            mMdpRev < MDSS_MDP_HW_REV_109);
485}
486
487
488}; //namespace qdutils
489
490