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 //8994
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_108
65#define MDSS_MDP_HW_REV_108 0x10080000 //8x39 & 8x36
66#endif
67#ifndef MDSS_MDP_HW_REV_109
68#define MDSS_MDP_HW_REV_109 0x10090000 //Next version
69#endif
70#ifndef MDSS_MDP_HW_REV_200
71#define MDSS_MDP_HW_REV_200 0x20000000 //8092
72#endif
73#ifndef MDSS_MDP_HW_REV_206
74#define MDSS_MDP_HW_REV_206 0x20060000 //Future
75#endif
76
77MDPVersion::MDPVersion()
78{
79    mMDPVersion = MDSS_V5;
80    mMdpRev = 0;
81    mRGBPipes = 0;
82    mVGPipes = 0;
83    mDMAPipes = 0;
84    mFeatures = 0;
85    mMDPUpscale = 0;
86    mMDPDownscale = 0;
87    mMacroTileEnabled = false;
88    mLowBw = 0;
89    mHighBw = 0;
90    mSourceSplit = false;
91    mSourceSplitAlways = false;
92    mRGBHasNoScalar = false;
93    mRotDownscale = false;
94
95    updatePanelInfo();
96
97    if(!updateSysFsInfo()) {
98        ALOGE("Unable to read display sysfs node");
99    }
100    if (mMdpRev == MDP_V3_0_4){
101        mMDPVersion = MDP_V3_0_4;
102    }
103
104    mHasOverlay = false;
105    if((mMDPVersion >= MDP_V4_0) ||
106       (mMDPVersion == MDP_V_UNKNOWN) ||
107       (mMDPVersion == MDP_V3_0_4))
108        mHasOverlay = true;
109    if(!updateSplitInfo()) {
110        ALOGE("Unable to read display split node");
111    }
112}
113
114MDPVersion::~MDPVersion() {
115    close(mFd);
116}
117
118int MDPVersion::tokenizeParams(char *inputParams, const char *delim,
119                                char* tokenStr[], int *idx) {
120    char *tmp_token = NULL;
121    char *temp_ptr;
122    int index = 0;
123    if (!inputParams) {
124        return -1;
125    }
126    tmp_token = strtok_r(inputParams, delim, &temp_ptr);
127    while (tmp_token != NULL) {
128        tokenStr[index++] = tmp_token;
129        tmp_token = strtok_r(NULL, " ", &temp_ptr);
130    }
131    *idx = index;
132    return 0;
133}
134// This function reads the sysfs node to read the primary panel type
135// and updates information accordingly
136void  MDPVersion::updatePanelInfo() {
137    FILE *displayDeviceFP = NULL;
138    FILE *panelInfoNodeFP = NULL;
139    const int MAX_FRAME_BUFFER_NAME_SIZE = 128;
140    char fbType[MAX_FRAME_BUFFER_NAME_SIZE];
141    const char *strCmdPanel = "mipi dsi cmd panel";
142    const char *strVideoPanel = "mipi dsi video panel";
143    const char *strLVDSPanel = "lvds panel";
144    const char *strEDPPanel = "edp panel";
145
146    displayDeviceFP = fopen("/sys/class/graphics/fb0/msm_fb_type", "r");
147    if(displayDeviceFP){
148        fread(fbType, sizeof(char), MAX_FRAME_BUFFER_NAME_SIZE,
149                displayDeviceFP);
150        if(strncmp(fbType, strCmdPanel, strlen(strCmdPanel)) == 0) {
151            mPanelInfo.mType = MIPI_CMD_PANEL;
152        }
153        else if(strncmp(fbType, strVideoPanel, strlen(strVideoPanel)) == 0) {
154            mPanelInfo.mType = MIPI_VIDEO_PANEL;
155        }
156        else if(strncmp(fbType, strLVDSPanel, strlen(strLVDSPanel)) == 0) {
157            mPanelInfo.mType = LVDS_PANEL;
158        }
159        else if(strncmp(fbType, strEDPPanel, strlen(strEDPPanel)) == 0) {
160            mPanelInfo.mType = EDP_PANEL;
161        }
162        fclose(displayDeviceFP);
163    } else {
164        ALOGE("Unable to read Primary Panel Information");
165    }
166
167    panelInfoNodeFP = fopen("/sys/class/graphics/fb0/msm_fb_panel_info", "r");
168    if(panelInfoNodeFP){
169        size_t len = PAGE_SIZE;
170        ssize_t read;
171        char *readLine = (char *) malloc (len);
172        while((read = getline((char **)&readLine, &len,
173                              panelInfoNodeFP)) != -1) {
174            int token_ct=0;
175            char *tokens[10];
176            memset(tokens, 0, sizeof(tokens));
177
178            if(!tokenizeParams(readLine, TOKEN_PARAMS_DELIM, tokens,
179                               &token_ct)) {
180                if(!strncmp(tokens[0], "pu_en", strlen("pu_en"))) {
181                    mPanelInfo.mPartialUpdateEnable = atoi(tokens[1]);
182                    ALOGI("PartialUpdate status: %s",
183                          mPanelInfo.mPartialUpdateEnable? "Enabled" :
184                          "Disabled");
185                }
186                if(!strncmp(tokens[0], "xstart", strlen("xstart"))) {
187                    mPanelInfo.mLeftAlign = atoi(tokens[1]);
188                    ALOGI("Left Align: %d", mPanelInfo.mLeftAlign);
189                }
190                if(!strncmp(tokens[0], "walign", strlen("walign"))) {
191                    mPanelInfo.mWidthAlign = atoi(tokens[1]);
192                    ALOGI("Width Align: %d", mPanelInfo.mWidthAlign);
193                }
194                if(!strncmp(tokens[0], "ystart", strlen("ystart"))) {
195                    mPanelInfo.mTopAlign = atoi(tokens[1]);
196                    ALOGI("Top Align: %d", mPanelInfo.mTopAlign);
197                }
198                if(!strncmp(tokens[0], "halign", strlen("halign"))) {
199                    mPanelInfo.mHeightAlign = atoi(tokens[1]);
200                    ALOGI("Height Align: %d", mPanelInfo.mHeightAlign);
201                }
202                if(!strncmp(tokens[0], "min_w", strlen("min_w"))) {
203                    mPanelInfo.mMinROIWidth = atoi(tokens[1]);
204                    ALOGI("Min ROI Width: %d", mPanelInfo.mMinROIWidth);
205                }
206                if(!strncmp(tokens[0], "min_h", strlen("min_h"))) {
207                    mPanelInfo.mMinROIHeight = atoi(tokens[1]);
208                    ALOGI("Min ROI Height: %d", mPanelInfo.mMinROIHeight);
209                }
210                if(!strncmp(tokens[0], "roi_merge", strlen("roi_merge"))) {
211                    mPanelInfo.mNeedsROIMerge = atoi(tokens[1]);
212                    ALOGI("Needs ROI Merge: %d", mPanelInfo.mNeedsROIMerge);
213                }
214            }
215        }
216        fclose(panelInfoNodeFP);
217    } else {
218        ALOGE("Failed to open msm_fb_panel_info node");
219    }
220}
221
222// This function reads the sysfs node to read MDP capabilities
223// and parses and updates information accordingly.
224bool MDPVersion::updateSysFsInfo() {
225    FILE *sysfsFd;
226    size_t len = PAGE_SIZE;
227    ssize_t read;
228    char *line = NULL;
229    char sysfsPath[255];
230    memset(sysfsPath, 0, sizeof(sysfsPath));
231    snprintf(sysfsPath , sizeof(sysfsPath),
232            "/sys/class/graphics/fb0/mdp/caps");
233    char property[PROPERTY_VALUE_MAX];
234    bool enableMacroTile = false;
235
236    if((property_get("persist.hwc.macro_tile_enable", property, NULL) > 0) &&
237       (!strncmp(property, "1", PROPERTY_VALUE_MAX ) ||
238        (!strncasecmp(property,"true", PROPERTY_VALUE_MAX )))) {
239        enableMacroTile = true;
240    }
241
242    sysfsFd = fopen(sysfsPath, "rb");
243
244    if (sysfsFd == NULL) {
245        ALOGE("%s: sysFsFile file '%s' not found",
246                __FUNCTION__, sysfsPath);
247        return false;
248    } else {
249        line = (char *) malloc(len);
250        while((read = getline(&line, &len, sysfsFd)) != -1) {
251            int index=0;
252            char *tokens[10];
253            memset(tokens, 0, sizeof(tokens));
254
255            // parse the line and update information accordingly
256            if(!tokenizeParams(line, TOKEN_PARAMS_DELIM, tokens, &index)) {
257                if(!strncmp(tokens[0], "hw_rev", strlen("hw_rev"))) {
258                    mMdpRev = atoi(tokens[1]);
259                }
260                else if(!strncmp(tokens[0], "rgb_pipes", strlen("rgb_pipes"))) {
261                    mRGBPipes = (uint8_t)atoi(tokens[1]);
262                }
263                else if(!strncmp(tokens[0], "vig_pipes", strlen("vig_pipes"))) {
264                    mVGPipes = (uint8_t)atoi(tokens[1]);
265                }
266                else if(!strncmp(tokens[0], "dma_pipes", strlen("dma_pipes"))) {
267                    mDMAPipes = (uint8_t)atoi(tokens[1]);
268                }
269                else if(!strncmp(tokens[0], "max_downscale_ratio",
270                                strlen("max_downscale_ratio"))) {
271                    mMDPDownscale = atoi(tokens[1]);
272                }
273                else if(!strncmp(tokens[0], "max_upscale_ratio",
274                                strlen("max_upscale_ratio"))) {
275                    mMDPUpscale = atoi(tokens[1]);
276                } else if(!strncmp(tokens[0], "max_bandwidth_low",
277                        strlen("max_bandwidth_low"))) {
278                    mLowBw = atol(tokens[1]);
279                } else if(!strncmp(tokens[0], "max_bandwidth_high",
280                        strlen("max_bandwidth_high"))) {
281                    mHighBw = atol(tokens[1]);
282                } else if(!strncmp(tokens[0], "features", strlen("features"))) {
283                    for(int i=1; i<index;i++) {
284                        if(!strncmp(tokens[i], "bwc", strlen("bwc"))) {
285                           mFeatures |= MDP_BWC_EN;
286                        } else if(!strncmp(tokens[i], "decimation",
287                                    strlen("decimation"))) {
288                           mFeatures |= MDP_DECIMATION_EN;
289                        } else if(!strncmp(tokens[i], "tile_format",
290                                    strlen("tile_format"))) {
291                           if(enableMacroTile)
292                               mMacroTileEnabled = true;
293                        } else if(!strncmp(tokens[i], "src_split",
294                                    strlen("src_split"))) {
295                            mSourceSplit = true;
296                        } else if(!strncmp(tokens[i], "non_scalar_rgb",
297                                    strlen("non_scalar_rgb"))) {
298                            mRGBHasNoScalar = true;
299                        } else if(!strncmp(tokens[i], "rotator_downscale",
300                                    strlen("rotator_downscale"))) {
301                            mRotDownscale = true;
302                        }
303                    }
304                }
305            }
306        }
307        free(line);
308        fclose(sysfsFd);
309    }
310
311    if(mSourceSplit) {
312        memset(sysfsPath, 0, sizeof(sysfsPath));
313        snprintf(sysfsPath , sizeof(sysfsPath),
314                "/sys/class/graphics/fb0/msm_fb_src_split_info");
315
316        sysfsFd = fopen(sysfsPath, "rb");
317        if (sysfsFd == NULL) {
318            ALOGE("%s: Opening file %s failed with error %s", __FUNCTION__,
319                    sysfsPath, strerror(errno));
320            return false;
321        } else {
322            line = (char *) malloc(len);
323            if((read = getline(&line, &len, sysfsFd)) != -1) {
324                if(!strncmp(line, "src_split_always",
325                        strlen("src_split_always"))) {
326                    mSourceSplitAlways = true;
327                }
328            }
329            free(line);
330            fclose(sysfsFd);
331        }
332    }
333
334    ALOGD_IF(DEBUG, "%s: mMDPVersion: %d mMdpRev: %x mRGBPipes:%d,"
335                    "mVGPipes:%d", __FUNCTION__, mMDPVersion, mMdpRev,
336                    mRGBPipes, mVGPipes);
337    ALOGD_IF(DEBUG, "%s:mDMAPipes:%d \t mMDPDownscale:%d, mFeatures:%d",
338                     __FUNCTION__,  mDMAPipes, mMDPDownscale, mFeatures);
339    ALOGD_IF(DEBUG, "%s:mLowBw: %lu mHighBw: %lu", __FUNCTION__,  mLowBw,
340            mHighBw);
341
342    return true;
343}
344
345// This function reads the sysfs node to read MDP capabilities
346// and parses and updates information accordingly.
347bool MDPVersion::updateSplitInfo() {
348    if(mMDPVersion >= MDSS_V5) {
349        char split[64] = {0};
350        FILE* fp = fopen("/sys/class/graphics/fb0/msm_fb_split", "r");
351        if(fp){
352            //Format "left right" space as delimiter
353            if(fread(split, sizeof(char), 64, fp)) {
354                split[sizeof(split) - 1] = '\0';
355                mSplit.mLeft = atoi(split);
356                ALOGI_IF(mSplit.mLeft, "Left Split=%d", mSplit.mLeft);
357                char *rght = strpbrk(split, " ");
358                if(rght)
359                    mSplit.mRight = atoi(rght + 1);
360                ALOGI_IF(mSplit.mRight, "Right Split=%d", mSplit.mRight);
361            }
362        } else {
363            ALOGE("Failed to open mdss_fb_split node");
364            return false;
365        }
366        if(fp)
367            fclose(fp);
368    }
369    return true;
370}
371
372
373bool MDPVersion::supportsDecimation() {
374    return mFeatures & MDP_DECIMATION_EN;
375}
376
377uint32_t MDPVersion::getMaxMDPDownscale() {
378    return mMDPDownscale;
379}
380
381uint32_t MDPVersion::getMaxMDPUpscale() {
382    return mMDPUpscale;
383}
384
385bool MDPVersion::supportsBWC() {
386    // BWC - Bandwidth Compression
387    return (mFeatures & MDP_BWC_EN);
388}
389
390bool MDPVersion::supportsMacroTile() {
391    // MACRO TILE support
392    return mMacroTileEnabled;
393}
394
395bool MDPVersion::isSrcSplit() const {
396    return mSourceSplit;
397}
398
399bool MDPVersion::isSrcSplitAlways() const {
400    return mSourceSplitAlways;
401}
402
403bool MDPVersion::isRGBScalarSupported() const {
404    return (!mRGBHasNoScalar);
405}
406
407bool MDPVersion::is8x26() {
408    return (mMdpRev >= MDSS_MDP_HW_REV_101 and
409            mMdpRev < MDSS_MDP_HW_REV_102);
410}
411
412bool MDPVersion::is8x74v2() {
413    return (mMdpRev >= MDSS_MDP_HW_REV_102 and
414            mMdpRev < MDSS_MDP_HW_REV_103);
415}
416
417bool MDPVersion::is8084() {
418    return (mMdpRev >= MDSS_MDP_HW_REV_103 and
419            mMdpRev < MDSS_MDP_HW_REV_104);
420}
421
422bool MDPVersion::is8092() {
423    return (mMdpRev >= MDSS_MDP_HW_REV_200 and
424            mMdpRev < MDSS_MDP_HW_REV_206);
425}
426
427bool MDPVersion::is8994() {
428    return (mMdpRev >= MDSS_MDP_HW_REV_105 and
429            mMdpRev < MDSS_MDP_HW_REV_106);
430}
431
432bool MDPVersion::is8x16() {
433    return (mMdpRev >= MDSS_MDP_HW_REV_106 and
434            mMdpRev < MDSS_MDP_HW_REV_107);
435}
436
437bool MDPVersion::is8x39() {
438    return (mMdpRev >= MDSS_MDP_HW_REV_108 and
439            mMdpRev < MDSS_MDP_HW_REV_109);
440}
441
442
443}; //namespace qdutils
444
445