commit db55df5eee514b7f4ab6f6d86f2e03c5fab600d1
author yu.dong <yu.dong@mobiletek.cn> Tue May 06 01:40:47 2025 -0700
committer yu.dong@mobiletek.cn <yu.dong@mobiletek.cn> Tue May 06 08:56:13 2025 +0000
tree cc0ddad34ff6934c393210b325e696856ec5f49e
parent 2080339320812b9473a311bb203351df67f38e0a

[Feature][T106][task-view-1364][ADC] add qser_adc_show underlying query only once

Only Configure：No
Affected branch：master
Affected module：ADC
Is it affected on both ZXIC and MTK: only ZXIC
Self-test: Yes

Change-Id: I84161617342580e132cf948bd2ac45356e7ec7ee

cap/zx297520v3/src/lynq/lib/liblynq-adc/lynq-adc.cpp

diff --git a/cap/zx297520v3/src/lynq/lib/liblynq-adc/lynq-adc.cpp b/cap/zx297520v3/src/lynq/lib/liblynq-adc/lynq-adc.cpp
index a465ae3..1286d7d 100755
--- a/cap/zx297520v3/src/lynq/lib/liblynq-adc/lynq-adc.cpp
+++ b/cap/zx297520v3/src/lynq/lib/liblynq-adc/lynq-adc.cpp
@@ -3,6 +3,8 @@
 #include <string.h>
 #include <sc_bsp.h>
 #include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
 #include "lynq-adc.h"
 #include "liblog/lynq_deflog.h"
 
@@ -14,6 +16,8 @@
 #define ADC1_NODES "/sys/kernel/debug/pmu_zx29/adc1"
 #define ADC2_NODES "/sys/kernel/debug/pmu_zx29/adc2"
 
+static int adc_count_initialized = 0;
+
 /********************************************************************
 * @brief: qser_adc_show, function to read ADC value from specific channel
 * @param qadc [IN]: ADC_CHANNEL_E, the ADC channel to read from
@@ -27,6 +31,19 @@
     int adc_value;
     char cmd_ret[1024]={0};
     FILE *fd;
+
+    if (!adc_count_initialized) {
+        int fd_init;
+        if ((fd_init = open("/sys/kernel/debug/pmu_zx29/set_adc_count", O_WRONLY)) != -1) {
+            ssize_t ret = write(fd_init, "1", 1);
+            close(fd_init);
+            adc_count_initialized = 1;
+            LYDBGLOG("ADC count initialized, write returned: %zd bytes\n", ret);
+        } else {
+            LYERRLOG("Failed to initialize ADC count: %s\n", strerror(errno));
+        }
+    }
+
     switch(qadc)
     {
         case QADC_NONE: