dev: gcdb: store DSI PLL codes into emmc flash
It takes times to calibrate PLL and get codes values. So the codes
calibrated from the initial boot can be stored in emmc flash to avoid
later calibrations.
Change-Id: I892fd29f55cfd696140962d13b94b6e69cdc33b2
diff --git a/dev/gcdb/display/gcdb_display.c b/dev/gcdb/display/gcdb_display.c
index fa268b1..8e521b1 100755
--- a/dev/gcdb/display/gcdb_display.c
+++ b/dev/gcdb/display/gcdb_display.c
@@ -39,6 +39,7 @@
#include <qtimer.h>
#include <platform/gpio.h>
#include <mipi_dsi.h>
+#include <partition_parser.h>
#include "include/display_resource.h"
#include "include/panel.h"
@@ -149,7 +150,7 @@
return ret;
}
-static int mdss_dsi_dfps_get_pll_codes(struct msm_panel_info *pinfo)
+static int mdss_dsi_dfps_get_pll_codes_cal(struct msm_panel_info *pinfo)
{
int ret = NO_ERROR;
uint32_t fps_bak;
@@ -187,6 +188,95 @@
return ret;
}
+static int mdss_dsi_dfps_get_stored_pll_codes(struct msm_panel_info *pinfo)
+{
+ int ret = NO_ERROR;
+ int index;
+ unsigned long long ptn;
+ uint32_t blocksize;
+ struct dfps_info *dfps;
+
+ index = partition_get_index("splash");
+ if (index == 0) {
+ dprintf(CRITICAL, "ERROR: splash Partition table not found\n");
+ ret = ERROR;
+ goto splash_err;
+ }
+
+ ptn = partition_get_offset(index);
+ if (ptn == 0) {
+ dprintf(CRITICAL, "ERROR: splash Partition invalid offset\n");
+ ret = ERROR;
+ goto splash_err;
+ }
+
+ blocksize = mmc_get_device_blocksize();
+ if (blocksize == 0) {
+ dprintf(CRITICAL, "ERROR:splash Partition invalid blocksize\n");
+ ret = ERROR;
+ goto splash_err;
+ }
+
+ dfps = (struct dfps_info *)memalign(CACHE_LINE, ROUNDUP(PAGE_SIZE,
+ CACHE_LINE));
+ if (!dfps) {
+ dprintf(CRITICAL, "ERROR:splash Partition invalid memory\n");
+ ret = ERROR;
+ goto splash_err;
+ }
+
+ if (mmc_read(ptn, (uint32_t *) dfps, blocksize)) {
+ dprintf(CRITICAL, "mmc read splash failure%d\n", PAGE_SIZE);
+ ret = ERROR;
+ free(dfps);
+ goto splash_err;
+ }
+
+ dprintf(SPEW, "enable=%d cnt=%d\n", dfps->panel_dfps.enabled,
+ dfps->panel_dfps.frame_rate_cnt);
+
+ if (!dfps->panel_dfps.enabled || dfps->panel_dfps.frame_rate_cnt >
+ DFPS_MAX_FRAME_RATE) {
+ ret = ERROR;
+ free(dfps);
+ goto splash_err;
+ }
+
+ pinfo->dfps = *dfps;
+ free(dfps);
+
+splash_err:
+ return ret;
+}
+
+static int mdss_dsi_dfps_store_pll_codes(struct msm_panel_info *pinfo)
+{
+ int ret = NO_ERROR;
+ int index;
+ unsigned long long ptn;
+
+ index = partition_get_index("splash");
+ if (index == 0) {
+ dprintf(CRITICAL, "ERROR: splash Partition table not found\n");
+ ret = ERROR;
+ goto store_err;
+ }
+
+ ptn = partition_get_offset(index);
+ if (ptn == 0) {
+ dprintf(CRITICAL, "ERROR: splash Partition invalid offset\n");
+ ret = ERROR;
+ goto store_err;
+ }
+
+ ret = mmc_write(ptn, sizeof(uint32_t), &pinfo->dfps);
+ if (ret)
+ dprintf(CRITICAL, "mmc write failed!\n");
+
+store_err:
+ return ret;
+}
+
static int mdss_dsi_mipi_dfps_config(struct msm_panel_info *pinfo)
{
int ret = NO_ERROR;
@@ -197,8 +287,24 @@
if (!pinfo->dfps.panel_dfps.enabled)
goto dfps_done;
- ret = mdss_dsi_dfps_get_pll_codes(pinfo);
+ if (!mdss_dsi_dfps_get_stored_pll_codes(pinfo)) {
+ dprintf(SPEW, "Found stored PLL codes!\n");
+ goto dfps_cal_done;
+ }
+ ret = mdss_dsi_dfps_get_pll_codes_cal(pinfo);
+ if (ret) {
+ dprintf(CRITICAL, "Cannot cal pll codes!\n");
+ goto dfps_done;
+ } else {
+ dprintf(SPEW, "Calibrate all pll codes!\n");
+ }
+
+ ret = mdss_dsi_dfps_store_pll_codes(pinfo);
+ if (ret)
+ dprintf(CRITICAL, "Cannot store pll codes!\n");
+
+dfps_cal_done:
if (pinfo->dfps.dfps_fb_base)
memcpy(pinfo->dfps.dfps_fb_base, &pinfo->dfps,
sizeof(struct dfps_info));