mdp_version.cpp revision 9e771bed593b11da6e6bcd54b16ade8e80fcda2b 
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_REV
41enum mdp_rev {
42    MDSS_MDP_HW_REV_100 = 0x10000000, //8974 v1
43    MDSS_MDP_HW_REV_101 = 0x10010000, //8x26
44    MDSS_MDP_HW_REV_102 = 0x10020000, //8974 v2
45    MDSS_MDP_HW_REV_103 = 0x10030000, //8084
46    MDSS_MDP_HW_REV_104 = 0x10040000, //Next version
47    MDSS_MDP_HW_REV_105 = 0x10050000, //Next version
48    MDSS_MDP_HW_REV_107 = 0x10070000, //Next version
49    MDSS_MDP_HW_REV_200 = 0x20000000, //8092
50    MDSS_MDP_HW_REV_206 = 0x20060000, //Future
51};
52#else
53enum mdp_rev {
54    MDSS_MDP_HW_REV_104 = 0x10040000, //Next version
55    MDSS_MDP_HW_REV_206 = 0x20060000, //Future
56};
57#endif
58
59MDPVersion::MDPVersion()
60{
61    mMDPVersion = MDSS_V5;
62    mMdpRev = 0;
63    mRGBPipes = 0;
64    mVGPipes = 0;
65    mDMAPipes = 0;
66    mFeatures = 0;
67    mMDPUpscale = 0;
68    mMDPDownscale = 0;
69    mMacroTileEnabled = false;
70    mLowBw = 0;
71    mHighBw = 0;
72    mSourceSplit = false;
73
74    updatePanelInfo();
75
76    if(!updateSysFsInfo()) {
77        ALOGE("Unable to read display sysfs node");
78    }
79    if (mMdpRev == MDP_V3_0_4){
80        mMDPVersion = MDP_V3_0_4;
81    }
82
83    mHasOverlay = false;
84    if((mMDPVersion >= MDP_V4_0) ||
85       (mMDPVersion == MDP_V_UNKNOWN) ||
86       (mMDPVersion == MDP_V3_0_4))
87        mHasOverlay = true;
88    if(!updateSplitInfo()) {
89        ALOGE("Unable to read display split node");
90    }
91}
92
93MDPVersion::~MDPVersion() {
94    close(mFd);
95}
96
97int MDPVersion::tokenizeParams(char *inputParams, const char *delim,
98                                char* tokenStr[], int *idx) {
99    char *tmp_token = NULL;
100    char *temp_ptr;
101    int index = 0;
102    if (!inputParams) {
103        return -1;
104    }
105    tmp_token = strtok_r(inputParams, delim, &temp_ptr);
106    while (tmp_token != NULL) {
107        tokenStr[index++] = tmp_token;
108        tmp_token = strtok_r(NULL, " ", &temp_ptr);
109    }
110    *idx = index;
111    return 0;
112}
113// This function reads the sysfs node to read the primary panel type
114// and updates information accordingly
115void  MDPVersion::updatePanelInfo() {
116    FILE *displayDeviceFP = NULL;
117    FILE *panelInfoNodeFP = NULL;
118    const int MAX_FRAME_BUFFER_NAME_SIZE = 128;
119    char fbType[MAX_FRAME_BUFFER_NAME_SIZE];
120    char panelInfo[MAX_FRAME_BUFFER_NAME_SIZE];
121    const char *strCmdPanel = "mipi dsi cmd panel";
122    const char *strVideoPanel = "mipi dsi video panel";
123    const char *strLVDSPanel = "lvds panel";
124    const char *strEDPPanel = "edp panel";
125
126    displayDeviceFP = fopen("/sys/class/graphics/fb0/msm_fb_type", "r");
127    if(displayDeviceFP){
128        fread(fbType, sizeof(char), MAX_FRAME_BUFFER_NAME_SIZE,
129                displayDeviceFP);
130        if(strncmp(fbType, strCmdPanel, strlen(strCmdPanel)) == 0) {
131            mPanelInfo.mType = MIPI_CMD_PANEL;
132        }
133        else if(strncmp(fbType, strVideoPanel, strlen(strVideoPanel)) == 0) {
134            mPanelInfo.mType = MIPI_VIDEO_PANEL;
135        }
136        else if(strncmp(fbType, strLVDSPanel, strlen(strLVDSPanel)) == 0) {
137            mPanelInfo.mType = LVDS_PANEL;
138        }
139        else if(strncmp(fbType, strEDPPanel, strlen(strEDPPanel)) == 0) {
140            mPanelInfo.mType = EDP_PANEL;
141        }
142        fclose(displayDeviceFP);
143    } else {
144        ALOGE("Unable to read Primary Panel Information");
145    }
146
147    panelInfoNodeFP = fopen("/sys/class/graphics/fb0/msm_fb_panel_info", "r");
148    if(panelInfoNodeFP){
149        size_t len = PAGE_SIZE;
150        ssize_t read;
151        char *readLine = (char *) malloc (len);
152        while((read = getline((char **)&readLine, &len,
153                              panelInfoNodeFP)) != -1) {
154            int token_ct=0;
155            char *tokens[10];
156            memset(tokens, 0, sizeof(tokens));
157
158            if(!tokenizeParams(readLine, TOKEN_PARAMS_DELIM, tokens,
159                               &token_ct)) {
160                if(!strncmp(tokens[0], "pu_en", strlen("pu_en"))) {
161                    mPanelInfo.mPartialUpdateEnable = atoi(tokens[1]);
162                    ALOGI("PartialUpdate status: %s",
163                          mPanelInfo.mPartialUpdateEnable? "Enabled" :
164                          "Disabled");
165                }
166                if(!strncmp(tokens[0], "xstart", strlen("xstart"))) {
167                    mPanelInfo.mLeftAlign = atoi(tokens[1]);
168                    ALOGI("Left Align: %d", mPanelInfo.mLeftAlign);
169                }
170                if(!strncmp(tokens[0], "walign", strlen("walign"))) {
171                    mPanelInfo.mWidthAlign = atoi(tokens[1]);
172                    ALOGI("Width Align: %d", mPanelInfo.mWidthAlign);
173                }
174                if(!strncmp(tokens[0], "ystart", strlen("ystart"))) {
175                    mPanelInfo.mTopAlign = atoi(tokens[1]);
176                    ALOGI("Top Align: %d", mPanelInfo.mTopAlign);
177                }
178                if(!strncmp(tokens[0], "halign", strlen("halign"))) {
179                    mPanelInfo.mHeightAlign = atoi(tokens[1]);
180                    ALOGI("Height Align: %d", mPanelInfo.mHeightAlign);
181                }
182                if(!strncmp(tokens[0], "min_w", strlen("min_w"))) {
183                    mPanelInfo.mMinROIWidth = atoi(tokens[1]);
184                    ALOGI("Min ROI Width: %d", mPanelInfo.mMinROIWidth);
185                }
186                if(!strncmp(tokens[0], "min_h", strlen("min_h"))) {
187                    mPanelInfo.mMinROIHeight = atoi(tokens[1]);
188                    ALOGI("Min ROI Height: %d", mPanelInfo.mMinROIHeight);
189                }
190            }
191        }
192        fclose(panelInfoNodeFP);
193    } else {
194        ALOGE("Failed to open msm_fb_panel_info node");
195    }
196}
197
198// This function reads the sysfs node to read MDP capabilities
199// and parses and updates information accordingly.
200bool MDPVersion::updateSysFsInfo() {
201    FILE *sysfsFd;
202    size_t len = PAGE_SIZE;
203    ssize_t read;
204    char *line = NULL;
205    char sysfsPath[255];
206    memset(sysfsPath, 0, sizeof(sysfsPath));
207    snprintf(sysfsPath , sizeof(sysfsPath),
208            "/sys/class/graphics/fb0/mdp/caps");
209    char property[PROPERTY_VALUE_MAX];
210    bool enableMacroTile = false;
211
212    if((property_get("persist.hwc.macro_tile_enable", property, NULL) > 0) &&
213       (!strncmp(property, "1", PROPERTY_VALUE_MAX ) ||
214        (!strncasecmp(property,"true", PROPERTY_VALUE_MAX )))) {
215        enableMacroTile = true;
216    }
217
218    sysfsFd = fopen(sysfsPath, "rb");
219
220    if (sysfsFd == NULL) {
221        ALOGE("%s: sysFsFile file '%s' not found",
222                __FUNCTION__, sysfsPath);
223        return false;
224    } else {
225        line = (char *) malloc(len);
226        while((read = getline(&line, &len, sysfsFd)) != -1) {
227            int index=0;
228            char *tokens[10];
229            memset(tokens, 0, sizeof(tokens));
230
231            // parse the line and update information accordingly
232            if(!tokenizeParams(line, TOKEN_PARAMS_DELIM, tokens, &index)) {
233                if(!strncmp(tokens[0], "hw_rev", strlen("hw_rev"))) {
234                    mMdpRev = atoi(tokens[1]);
235                }
236                else if(!strncmp(tokens[0], "rgb_pipes", strlen("rgb_pipes"))) {
237                    mRGBPipes = (uint8_t)atoi(tokens[1]);
238                }
239                else if(!strncmp(tokens[0], "vig_pipes", strlen("vig_pipes"))) {
240                    mVGPipes = (uint8_t)atoi(tokens[1]);
241                }
242                else if(!strncmp(tokens[0], "dma_pipes", strlen("dma_pipes"))) {
243                    mDMAPipes = (uint8_t)atoi(tokens[1]);
244                }
245                else if(!strncmp(tokens[0], "max_downscale_ratio",
246                                strlen("max_downscale_ratio"))) {
247                    mMDPDownscale = atoi(tokens[1]);
248                }
249                else if(!strncmp(tokens[0], "max_upscale_ratio",
250                                strlen("max_upscale_ratio"))) {
251                    mMDPUpscale = atoi(tokens[1]);
252                } else if(!strncmp(tokens[0], "max_bandwidth_low",
253                        strlen("max_bandwidth_low"))) {
254                    mLowBw = atol(tokens[1]);
255                } else if(!strncmp(tokens[0], "max_bandwidth_high",
256                        strlen("max_bandwidth_high"))) {
257                    mHighBw = atol(tokens[1]);
258                } else if(!strncmp(tokens[0], "features", strlen("features"))) {
259                    for(int i=1; i<index;i++) {
260                        if(!strncmp(tokens[i], "bwc", strlen("bwc"))) {
261                           mFeatures |= MDP_BWC_EN;
262                        }
263                        else if(!strncmp(tokens[i], "decimation",
264                                    strlen("decimation"))) {
265                           mFeatures |= MDP_DECIMATION_EN;
266                        }
267                        else if(!strncmp(tokens[i], "tile_format",
268                                    strlen("tile_format"))) {
269                           if(enableMacroTile)
270                               mMacroTileEnabled = true;
271                        } else if(!strncmp(tokens[i], "src_split",
272                                    strlen("src_split"))) {
273                            mSourceSplit = true;
274                        }
275                    }
276                }
277            }
278        }
279        free(line);
280        fclose(sysfsFd);
281    }
282    ALOGD_IF(DEBUG, "%s: mMDPVersion: %d mMdpRev: %x mRGBPipes:%d,"
283                    "mVGPipes:%d", __FUNCTION__, mMDPVersion, mMdpRev,
284                    mRGBPipes, mVGPipes);
285    ALOGD_IF(DEBUG, "%s:mDMAPipes:%d \t mMDPDownscale:%d, mFeatures:%d",
286                     __FUNCTION__,  mDMAPipes, mMDPDownscale, mFeatures);
287    ALOGD_IF(DEBUG, "%s:mLowBw: %lu mHighBw: %lu", __FUNCTION__,  mLowBw,
288            mHighBw);
289
290    return true;
291}
292
293// This function reads the sysfs node to read MDP capabilities
294// and parses and updates information accordingly.
295bool MDPVersion::updateSplitInfo() {
296    if(mMDPVersion >= MDSS_V5) {
297        char split[64] = {0};
298        FILE* fp = fopen("/sys/class/graphics/fb0/msm_fb_split", "r");
299        if(fp){
300            //Format "left right" space as delimiter
301            if(fread(split, sizeof(char), 64, fp)) {
302                split[sizeof(split) - 1] = '\0';
303                mSplit.mLeft = atoi(split);
304                ALOGI_IF(mSplit.mLeft, "Left Split=%d", mSplit.mLeft);
305                char *rght = strpbrk(split, " ");
306                if(rght)
307                    mSplit.mRight = atoi(rght + 1);
308                ALOGI_IF(mSplit.mRight, "Right Split=%d", mSplit.mRight);
309            }
310        } else {
311            ALOGE("Failed to open mdss_fb_split node");
312            return false;
313        }
314        if(fp)
315            fclose(fp);
316    }
317    return true;
318}
319
320
321bool MDPVersion::supportsDecimation() {
322    return mFeatures & MDP_DECIMATION_EN;
323}
324
325uint32_t MDPVersion::getMaxMDPDownscale() {
326    return mMDPDownscale;
327}
328
329uint32_t MDPVersion::getMaxMDPUpscale() {
330    return mMDPUpscale;
331}
332
333bool MDPVersion::supportsBWC() {
334    // BWC - Bandwidth Compression
335    return (mFeatures & MDP_BWC_EN);
336}
337
338bool MDPVersion::supportsMacroTile() {
339    // MACRO TILE support
340    return mMacroTileEnabled;
341}
342
343bool MDPVersion::isSrcSplit() const {
344    return mSourceSplit;
345}
346
347bool MDPVersion::is8x26() {
348    return (mMdpRev >= MDSS_MDP_HW_REV_101 and
349            mMdpRev < MDSS_MDP_HW_REV_102);
350}
351
352bool MDPVersion::is8x74v2() {
353    return (mMdpRev >= MDSS_MDP_HW_REV_102 and
354            mMdpRev < MDSS_MDP_HW_REV_103);
355}
356
357bool MDPVersion::is8084() {
358    return (mMdpRev >= MDSS_MDP_HW_REV_103 and
359            mMdpRev < MDSS_MDP_HW_REV_104);
360}
361
362bool MDPVersion::is8092() {
363    return (mMdpRev >= MDSS_MDP_HW_REV_200 and
364            mMdpRev < MDSS_MDP_HW_REV_206);
365}
366
367}; //namespace qdutils
368
369