macloader: Add support to set nvram calibration file. (e283a09f) · Commits · e / devices / samsung / android_hardware_samsung

macloader/Android.mk

+8 −0

Original line number	Diff line number	Diff line
		@@ -3,6 +3,14 @@ ifeq ($(BOARD_HAVE_SAMSUNG_WIFI),true)
		LOCAL_PATH := $(call my-dir)
		include $(CLEAR_VARS)

		ifdef WIFI_DRIVER_NVRAM_PATH
		LOCAL_CFLAGS += -DWIFI_DRIVER_NVRAM_PATH=\"$(WIFI_DRIVER_NVRAM_PATH)\"
		endif

		ifdef WIFI_DRIVER_NVRAM_PATH_PARAM
		LOCAL_CFLAGS += -DWIFI_DRIVER_NVRAM_PATH_PARAM=\"$(WIFI_DRIVER_NVRAM_PATH_PARAM)\"
		endif

		LOCAL_SRC_FILES := \
		macloader.c

macloader/macloader.c

+95 −0

Original line number	Diff line number	Diff line
		@@ -22,12 +22,22 @@
		#include <stdio.h>
		#include <stdlib.h>
		#include <string.h>
		#include <sys/types.h>
		#include <sys/stat.h>
		#include <fcntl.h>
		#include <unistd.h>
		#include <pwd.h>

		#include <cutils/log.h>

		#ifndef WIFI_DRIVER_NVRAM_PATH
		#define WIFI_DRIVER_NVRAM_PATH NULL
		#endif

		#ifndef WIFI_DRIVER_NVRAM_PATH_PARAM
		#define WIFI_DRIVER_NVRAM_PATH_PARAM "/sys/module/wlan/parameters/nvram_path"
		#endif

		#define MACADDR_PATH "/efs/wifi/.mac.info"
		#define CID_PATH "/data/.cid.info"

		@@ -40,6 +50,82 @@ enum Type {
		WISOL
		};

		static int wifi_change_nvram_calibration(const char *nvram_file,
		const char *type)
		{
		int len;
		int fd = -1;
		int ret = 0;
		struct stat sb;
		char nvram_str[1024] = { 0 };

		if (nvram_file == NULL \|\| type == NULL) {
		return -1;
		}

		ret = stat(nvram_file, &sb);
		if (ret != 0) {
		ALOGE("Failed to check for NVRAM calibration file '%s' - error: %s",
		nvram_file,
		strerror(errno));
		return -1;
		}

		ALOGD("Using NVRAM calibration file: %s\n", nvram_file);

		fd = TEMP_FAILURE_RETRY(open(WIFI_DRIVER_NVRAM_PATH_PARAM, O_WRONLY));
		if (fd < 0) {
		ALOGE("Failed to open wifi nvram config path %s - error: %s",
		WIFI_DRIVER_NVRAM_PATH_PARAM, strerror(errno));
		return -1;
		}

		len = strlen(nvram_file) + 1;
		if (TEMP_FAILURE_RETRY(write(fd, nvram_file, len)) != len) {
		ALOGE("Failed to write to wifi config path %s - error: %s",
		WIFI_DRIVER_NVRAM_PATH_PARAM, strerror(errno));
		ret = -1;
		goto out;
		}

		snprintf(nvram_str, sizeof(nvram_str), "%s_%s",
		nvram_file, type);

		ALOGD("Changing NVRAM calibration file for %s chipset\n", type);

		ret = stat(nvram_str, &sb);
		if (ret != 0) {
		ALOGW("NVRAM calibration file '%s' doesn't exist", nvram_str);
		/*
		* We were able to write the default calibration file. So
		* continue here without returning an error.
		*/
		ret = 0;
		goto out;
		}

		len = strlen(nvram_str) + 1;
		if (TEMP_FAILURE_RETRY(write(fd, nvram_str, len)) != len) {
		ALOGW("Failed to write to wifi config path %s - error: %s",
		WIFI_DRIVER_NVRAM_PATH_PARAM, strerror(errno));
		/*
		* We were able to write the default calibration file. So
		* continue here without returning an error.
		*/
		ret = 0;
		goto out;
		}

		ALOGD("NVRAM calibration file set to '%s'\n", nvram_str);

		ret = 0;
		out:
		if (fd != -1) {
		close(fd);
		}
		return ret;
		}

		int main() {
		FILE* file;
		FILE* cidfile;
		@@ -108,6 +194,7 @@ int main() {
		}

		if (type != NONE) {
		const char *nvram_file;
		const char *type_str;
		struct passwd *pwd;
		int fd;
		@@ -176,6 +263,14 @@ int main() {
		CID_PATH, strerror(errno));
		return 1;
		}

		nvram_file = WIFI_DRIVER_NVRAM_PATH;
		if (nvram_file != NULL) {
		ret = wifi_change_nvram_calibration(nvram_file, type_str);
		if (ret != 0) {
		return 1;
		}
		}
		} else {
		/* delete cid file if no specific type */
		ALOGD("Deleting file %s\n", CID_PATH);