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
33#define DEBUG 0
34
35ANDROID_SINGLETON_STATIC_INSTANCE(qdutils::MDPVersion);
36namespace qdutils {
37
38#define TOKEN_PARAMS_DELIM  "="
39
40#ifndef MDSS_MDP_HW_REV_100
41#define MDSS_MDP_HW_REV_100 0x10000000 //8974 v1
42#endif
43#ifndef MDSS_MDP_HW_REV_101
44#define MDSS_MDP_HW_REV_101 0x10010000 //8x26
45#endif
46#ifndef MDSS_MDP_HW_REV_102
47#define MDSS_MDP_HW_REV_102 0x10020000 //8974 v2
48#endif
49#ifndef MDSS_MDP_HW_REV_103
50#define MDSS_MDP_HW_REV_103 0x10030000 //8084
51#endif
52#ifndef MDSS_MDP_HW_REV_104
53#define MDSS_MDP_HW_REV_104 0x10040000 //Next version
54#endif
55#ifndef MDSS_MDP_HW_REV_105
56#define MDSS_MDP_HW_REV_105 0x10050000 //Next version
57#endif
58#ifndef MDSS_MDP_HW_REV_106
59#define MDSS_MDP_HW_REV_106 0x10060000 //8x16
60#endif
61#ifndef MDSS_MDP_HW_REV_107
62#define MDSS_MDP_HW_REV_107 0x10070000 //Next version
63#endif
64#ifndef MDSS_MDP_HW_REV_200
65#define MDSS_MDP_HW_REV_200 0x20000000 //8092
66#endif
67#ifndef MDSS_MDP_HW_REV_206
68#define MDSS_MDP_HW_REV_206 0x20060000 //Future
69#endif
70
71MDPVersion::MDPVersion()
72{
73    mMDPVersion = MDSS_V5;
74    mMdpRev = 0;
75    mRGBPipes = 0;
76    mVGPipes = 0;
77    mDMAPipes = 0;
78    mFeatures = 0;
79    mMDPUpscale = 0;
80    mMDPDownscale = 0;
81    mMacroTileEnabled = false;
82    mLowBw = 0;
83    mHighBw = 0;
84    mSourceSplit = false;
85    mSourceSplitAlways = false;
86    mRGBHasNoScalar = false;
87
88    updatePanelInfo();
89
90    if(!updateSysFsInfo()) {
91        ALOGE("Unable to read display sysfs node");
92    }
93    if (mMdpRev == MDP_V3_0_4){
94        mMDPVersion = MDP_V3_0_4;
95    }
96
97    mHasOverlay = false;
98    if((mMDPVersion >= MDP_V4_0) ||
99       (mMDPVersion == MDP_V_UNKNOWN) ||
100       (mMDPVersion == MDP_V3_0_4))
101        mHasOverlay = true;
102    if(!updateSplitInfo()) {
103        ALOGE("Unable to read display split node");
104    }
105}
106
107MDPVersion::~MDPVersion() {
108    close(mFd);
109}
110
111int MDPVersion::tokenizeParams(char *inputParams, const char *delim,
112                                char* tokenStr[], int *idx) {
113    char *tmp_token = NULL;
114    char *temp_ptr;
115    int index = 0;
116    if (!inputParams) {
117        return -1;
118    }
119    tmp_token = strtok_r(inputParams, delim, &temp_ptr);
120    while (tmp_token != NULL) {
121        tokenStr[index++] = tmp_token;
122        tmp_token = strtok_r(NULL, " ", &temp_ptr);
123    }
124    *idx = index;
125    return 0;
126}
127// This function reads the sysfs node to read the primary panel type
128// and updates information accordingly
129void  MDPVersion::updatePanelInfo() {
130    FILE *displayDeviceFP = NULL;
131    FILE *panelInfoNodeFP = NULL;
132    const int MAX_FRAME_BUFFER_NAME_SIZE = 128;
133    char fbType[MAX_FRAME_BUFFER_NAME_SIZE];
134    char panelInfo[MAX_FRAME_BUFFER_NAME_SIZE];
135    const char *strCmdPanel = "mipi dsi cmd panel";
136    const char *strVideoPanel = "mipi dsi video panel";
137    const char *strLVDSPanel = "lvds panel";
138    const char *strEDPPanel = "edp panel";
139
140    displayDeviceFP = fopen("/sys/class/graphics/fb0/msm_fb_type", "r");
141    if(displayDeviceFP){
142        fread(fbType, sizeof(char), MAX_FRAME_BUFFER_NAME_SIZE,
143                displayDeviceFP);
144        if(strncmp(fbType, strCmdPanel, strlen(strCmdPanel)) == 0) {
145            mPanelInfo.mType = MIPI_CMD_PANEL;
146        }
147        else if(strncmp(fbType, strVideoPanel, strlen(strVideoPanel)) == 0) {
148            mPanelInfo.mType = MIPI_VIDEO_PANEL;
149        }
150        else if(strncmp(fbType, strLVDSPanel, strlen(strLVDSPanel)) == 0) {
151            mPanelInfo.mType = LVDS_PANEL;
152        }
153        else if(strncmp(fbType, strEDPPanel, strlen(strEDPPanel)) == 0) {
154            mPanelInfo.mType = EDP_PANEL;
155        }
156        fclose(displayDeviceFP);
157    } else {
158        ALOGE("Unable to read Primary Panel Information");
159    }
160
161    panelInfoNodeFP = fopen("/sys/class/graphics/fb0/msm_fb_panel_info", "r");
162    if(panelInfoNodeFP){
163        size_t len = PAGE_SIZE;
164        ssize_t read;
165        char *readLine = (char *) malloc (len);
166        while((read = getline((char **)&readLine, &len,
167                              panelInfoNodeFP)) != -1) {
168            int token_ct=0;
169            char *tokens[10];
170            memset(tokens, 0, sizeof(tokens));
171
172            if(!tokenizeParams(readLine, TOKEN_PARAMS_DELIM, tokens,
173                               &token_ct)) {
174                if(!strncmp(tokens[0], "pu_en", strlen("pu_en"))) {
175                    mPanelInfo.mPartialUpdateEnable = atoi(tokens[1]);
176                    ALOGI("PartialUpdate status: %s",
177                          mPanelInfo.mPartialUpdateEnable? "Enabled" :
178                          "Disabled");
179                }
180                if(!strncmp(tokens[0], "xstart", strlen("xstart"))) {
181                    mPanelInfo.mLeftAlign = atoi(tokens[1]);
182                    ALOGI("Left Align: %d", mPanelInfo.mLeftAlign);
183                }
184                if(!strncmp(tokens[0], "walign", strlen("walign"))) {
185                    mPanelInfo.mWidthAlign = atoi(tokens[1]);
186                    ALOGI("Width Align: %d", mPanelInfo.mWidthAlign);
187                }
188                if(!strncmp(tokens[0], "ystart", strlen("ystart"))) {
189                    mPanelInfo.mTopAlign = atoi(tokens[1]);
190                    ALOGI("Top Align: %d", mPanelInfo.mTopAlign);
191                }
192                if(!strncmp(tokens[0], "halign", strlen("halign"))) {
193                    mPanelInfo.mHeightAlign = atoi(tokens[1]);
194                    ALOGI("Height Align: %d", mPanelInfo.mHeightAlign);
195                }
196                if(!strncmp(tokens[0], "min_w", strlen("min_w"))) {
197                    mPanelInfo.mMinROIWidth = atoi(tokens[1]);
198                    ALOGI("Min ROI Width: %d", mPanelInfo.mMinROIWidth);
199                }
200                if(!strncmp(tokens[0], "min_h", strlen("min_h"))) {
201                    mPanelInfo.mMinROIHeight = atoi(tokens[1]);
202                    ALOGI("Min ROI Height: %d", mPanelInfo.mMinROIHeight);
203                }
204                if(!strncmp(tokens[0], "roi_merge", strlen("roi_merge"))) {
205                    mPanelInfo.mNeedsROIMerge = atoi(tokens[1]);
206                    ALOGI("Needs ROI Merge: %d", mPanelInfo.mNeedsROIMerge);
207                }
208            }
209        }
210        fclose(panelInfoNodeFP);
211    } else {
212        ALOGE("Failed to open msm_fb_panel_info node");
213    }
214}
215
216// This function reads the sysfs node to read MDP capabilities
217// and parses and updates information accordingly.
218bool MDPVersion::updateSysFsInfo() {
219    FILE *sysfsFd;
220    size_t len = PAGE_SIZE;
221    ssize_t read;
222    char *line = NULL;
223    char sysfsPath[255];
224    memset(sysfsPath, 0, sizeof(sysfsPath));
225    snprintf(sysfsPath , sizeof(sysfsPath),
226            "/sys/class/graphics/fb0/mdp/caps");
227    char property[PROPERTY_VALUE_MAX];
228    bool enableMacroTile = false;
229
230    if((property_get("persist.hwc.macro_tile_enable", property, NULL) > 0) &&
231       (!strncmp(property, "1", PROPERTY_VALUE_MAX ) ||
232        (!strncasecmp(property,"true", PROPERTY_VALUE_MAX )))) {
233        enableMacroTile = true;
234    }
235
236    sysfsFd = fopen(sysfsPath, "rb");
237
238    if (sysfsFd == NULL) {
239        ALOGE("%s: sysFsFile file '%s' not found",
240                __FUNCTION__, sysfsPath);
241        return false;
242    } else {
243        line = (char *) malloc(len);
244        while((read = getline(&line, &len, sysfsFd)) != -1) {
245            int index=0;
246            char *tokens[10];
247            memset(tokens, 0, sizeof(tokens));
248
249            // parse the line and update information accordingly
250            if(!tokenizeParams(line, TOKEN_PARAMS_DELIM, tokens, &index)) {
251                if(!strncmp(tokens[0], "hw_rev", strlen("hw_rev"))) {
252                    mMdpRev = atoi(tokens[1]);
253                }
254                else if(!strncmp(tokens[0], "rgb_pipes", strlen("rgb_pipes"))) {
255                    mRGBPipes = (uint8_t)atoi(tokens[1]);
256                }
257                else if(!strncmp(tokens[0], "vig_pipes", strlen("vig_pipes"))) {
258                    mVGPipes = (uint8_t)atoi(tokens[1]);
259                }
260                else if(!strncmp(tokens[0], "dma_pipes", strlen("dma_pipes"))) {
261                    mDMAPipes = (uint8_t)atoi(tokens[1]);
262                }
263                else if(!strncmp(tokens[0], "max_downscale_ratio",
264                                strlen("max_downscale_ratio"))) {
265                    mMDPDownscale = atoi(tokens[1]);
266                }
267                else if(!strncmp(tokens[0], "max_upscale_ratio",
268                                strlen("max_upscale_ratio"))) {
269                    mMDPUpscale = atoi(tokens[1]);
270                } else if(!strncmp(tokens[0], "max_bandwidth_low",
271                        strlen("max_bandwidth_low"))) {
272                    mLowBw = atol(tokens[1]);
273                } else if(!strncmp(tokens[0], "max_bandwidth_high",
274                        strlen("max_bandwidth_high"))) {
275                    mHighBw = atol(tokens[1]);
276                } else if(!strncmp(tokens[0], "features", strlen("features"))) {
277                    for(int i=1; i<index;i++) {
278                        if(!strncmp(tokens[i], "bwc", strlen("bwc"))) {
279                           mFeatures |= MDP_BWC_EN;
280                        }
281                        else if(!strncmp(tokens[i], "decimation",
282                                    strlen("decimation"))) {
283                           mFeatures |= MDP_DECIMATION_EN;
284                        }
285                        else if(!strncmp(tokens[i], "tile_format",
286                                    strlen("tile_format"))) {
287                           if(enableMacroTile)
288                               mMacroTileEnabled = true;
289                        } else if(!strncmp(tokens[i], "src_split",
290                                    strlen("src_split"))) {
291                            mSourceSplit = true;
292                        }
293                        else if(!strncmp(tokens[i], "non_scalar_rgb",
294                                    strlen("non_scalar_rgb"))) {
295                            mRGBHasNoScalar = true;
296                        }
297                    }
298                }
299            }
300        }
301        free(line);
302        fclose(sysfsFd);
303    }
304
305    if(mSourceSplit) {
306        memset(sysfsPath, 0, sizeof(sysfsPath));
307        snprintf(sysfsPath , sizeof(sysfsPath),
308                "/sys/class/graphics/fb0/msm_fb_src_split_info");
309
310        sysfsFd = fopen(sysfsPath, "rb");
311        if (sysfsFd == NULL) {
312            ALOGE("%s: Opening file %s failed with error %s", __FUNCTION__,
313                    sysfsPath, strerror(errno));
314            return false;
315        } else {
316            line = (char *) malloc(len);
317            if((read = getline(&line, &len, sysfsFd)) != -1) {
318                if(!strncmp(line, "src_split_always",
319                        strlen("src_split_always"))) {
320                    mSourceSplitAlways = true;
321                }
322            }
323            free(line);
324            fclose(sysfsFd);
325        }
326    }
327
328    ALOGD_IF(DEBUG, "%s: mMDPVersion: %d mMdpRev: %x mRGBPipes:%d,"
329                    "mVGPipes:%d", __FUNCTION__, mMDPVersion, mMdpRev,
330                    mRGBPipes, mVGPipes);
331    ALOGD_IF(DEBUG, "%s:mDMAPipes:%d \t mMDPDownscale:%d, mFeatures:%d",
332                     __FUNCTION__,  mDMAPipes, mMDPDownscale, mFeatures);
333    ALOGD_IF(DEBUG, "%s:mLowBw: %lu mHighBw: %lu", __FUNCTION__,  mLowBw,
334            mHighBw);
335
336    return true;
337}
338
339// This function reads the sysfs node to read MDP capabilities
340// and parses and updates information accordingly.
341bool MDPVersion::updateSplitInfo() {
342    if(mMDPVersion >= MDSS_V5) {
343        char split[64] = {0};
344        FILE* fp = fopen("/sys/class/graphics/fb0/msm_fb_split", "r");
345        if(fp){
346            //Format "left right" space as delimiter
347            if(fread(split, sizeof(char), 64, fp)) {
348                split[sizeof(split) - 1] = '\0';
349                mSplit.mLeft = atoi(split);
350                ALOGI_IF(mSplit.mLeft, "Left Split=%d", mSplit.mLeft);
351                char *rght = strpbrk(split, " ");
352                if(rght)
353                    mSplit.mRight = atoi(rght + 1);
354                ALOGI_IF(mSplit.mRight, "Right Split=%d", mSplit.mRight);
355            }
356        } else {
357            ALOGE("Failed to open mdss_fb_split node");
358            return false;
359        }
360        if(fp)
361            fclose(fp);
362    }
363    return true;
364}
365
366
367bool MDPVersion::hasMinCropWidthLimitation() const {
368    return mMdpRev <= MDSS_MDP_HW_REV_102;
369}
370
371bool MDPVersion::supportsDecimation() {
372    return mFeatures & MDP_DECIMATION_EN;
373}
374
375uint32_t MDPVersion::getMaxMDPDownscale() {
376    return mMDPDownscale;
377}
378
379uint32_t MDPVersion::getMaxMDPUpscale() {
380    return mMDPUpscale;
381}
382
383bool MDPVersion::supportsBWC() {
384    // BWC - Bandwidth Compression
385    return (mFeatures & MDP_BWC_EN);
386}
387
388bool MDPVersion::supportsMacroTile() {
389    // MACRO TILE support
390    return mMacroTileEnabled;
391}
392
393bool MDPVersion::isSrcSplit() const {
394    return mSourceSplit;
395}
396
397bool MDPVersion::isSrcSplitAlways() const {
398    return mSourceSplitAlways;
399}
400
401bool MDPVersion::isRGBScalarSupported() const {
402    return (!mRGBHasNoScalar);
403}
404
405bool MDPVersion::is8x26() {
406    return (mMdpRev >= MDSS_MDP_HW_REV_101 and
407            mMdpRev < MDSS_MDP_HW_REV_102);
408}
409
410bool MDPVersion::is8x74v2() {
411    return (mMdpRev >= MDSS_MDP_HW_REV_102 and
412            mMdpRev < MDSS_MDP_HW_REV_103);
413}
414
415bool MDPVersion::is8084() {
416    return (mMdpRev >= MDSS_MDP_HW_REV_103 and
417            mMdpRev < MDSS_MDP_HW_REV_104);
418}
419
420bool MDPVersion::is8092() {
421    return (mMdpRev >= MDSS_MDP_HW_REV_200 and
422            mMdpRev < MDSS_MDP_HW_REV_206);
423}
424
425bool MDPVersion::is8x16() {
426    return (mMdpRev >= MDSS_MDP_HW_REV_106 and
427            mMdpRev < MDSS_MDP_HW_REV_107);
428}
429
430}; //namespace qdutils
431
432