[COMMON] thermal: samsung: Search child node using node pointer

To find child node of thermal-zones node, use thermal sensor node
pointer. The node pointer is save at probe time.

Change-Id: I009ada441325583465a573dd28fd00cfed94a9ad
Signed-off-by: Soomin Kim <sm8326.kim@samsung.com>

diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
index dac1550875a08b50647f9fc2b6873eed32980680..c19b3180ce60bf88f0370b473fe076db8d337a27 100644 (file)
--- a/drivers/thermal/samsung/exynos_tmu.c
+++ b/drivers/thermal/samsung/exynos_tmu.c
@@ -182,6 +182,7 @@ struct exynos_tmu_data {
        struct remote_sensor_info *remote_sensors;
        int sensing_mode;
        char tmu_name[THERMAL_NAME_LENGTH];
+       struct device_node *np;
 
        int (*tmu_initialize)(struct platform_device *pdev);
        void (*tmu_control)(struct platform_device *pdev, bool on);
@@ -935,6 +936,8 @@ static int exynos_map_dt_data(struct platform_device *pdev)
        if (!data || !pdev->dev.of_node)
                return -ENODEV;
 
+       data->np = pdev->dev.of_node;
+
        data->id = of_alias_get_id(pdev->dev.of_node, "tmuctrl");
        if (data->id < 0)
                data->id = 0;
@@ -1162,18 +1165,20 @@ static int exynos_cpufreq_cooling_register(struct exynos_tmu_data *data)
        struct device_node *cool_np;
        struct of_phandle_args cooling_spec;
        struct cpumask mask_val;
-       int cpu, ret, i;
+       int cpu, ret;
 
        np = of_find_node_by_name(NULL, "thermal-zones");
        if (!np)
                return -ENODEV;
 
-       /* Regist cpufreq cooling device */
-       for (i = 0; i <= data->id; i++) {
-               child = of_get_next_child(np, child);
-               if (i == data->id)
-                       break;
+       /* Register cpufreq cooling device */
+       for_each_child_of_node(np, child) {
+               struct device_node *zone_np;
+               zone_np = of_parse_phandle(child, "thermal-sensors", 0);
+
+               if (zone_np == data->np) break;
        }
+
        gchild = of_get_child_by_name(child, "cooling-maps");
        ggchild = of_get_next_child(gchild, NULL);
        ret = of_parse_phandle_with_args(ggchild, "cooling-device", "#cooling-cells",
@@ -1200,18 +1205,20 @@ static int exynos_gpufreq_cooling_register(struct exynos_tmu_data *data)
        struct device_node *np, *child = NULL, *gchild, *ggchild;
        struct device_node *cool_np;
        struct of_phandle_args cooling_spec;
-       int ret, i;
+       int ret;
 
        np = of_find_node_by_name(NULL, "thermal-zones");
        if (!np)
                return -ENODEV;
 
        /* Regist gpufreq cooling device */
-       for (i = 0; i <= data->id; i++) {
-               child = of_get_next_child(np, child);
-               if (i == data->id)
-                       break;
+       for_each_child_of_node(np, child) {
+               struct device_node *zone_np;
+               zone_np = of_parse_phandle(child, "thermal-sensors", 0);
+
+               if (zone_np == data->np) break;
        }
+
        gchild = of_get_child_by_name(child, "cooling-maps");
        ggchild = of_get_next_child(gchild, NULL);
        ret = of_parse_phandle_with_args(ggchild, "cooling-device", "#cooling-cells",
@@ -1235,18 +1242,20 @@ static int exynos_isp_cooling_register(struct exynos_tmu_data *data)
        struct device_node *np, *child = NULL, *gchild, *ggchild;
        struct device_node *cool_np;
        struct of_phandle_args cooling_spec;
-       int ret, i;
+       int ret;
 
        np = of_find_node_by_name(NULL, "thermal-zones");
        if (!np)
                return -ENODEV;
 
        /* Regist isp cooling device */
-       for (i = 0; i <= data->id; i++) {
-               child = of_get_next_child(np, child);
-               if (i == data->id)
-                       break;
+       for_each_child_of_node(np, child) {
+               struct device_node *zone_np;
+               zone_np = of_parse_phandle(child, "thermal-sensors", 0);
+
+               if (zone_np == data->np) break;
        }
+
        gchild = of_get_child_by_name(child, "cooling-maps");
        ggchild = of_get_next_child(gchild, NULL);
        ret = of_parse_phandle_with_args(ggchild, "cooling-device", "#cooling-cells",