rtc: max77686: avoid reference of parent device info multiple places

Get rid of referring parent device info for register access
all the places by making regmap as part of max77686 rtc
device info. This will also remove the need of storing parent
device info in max77686 rtc device info as this is no more required.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Tested-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Tested-by: Javier Martinez Canillas <javier@osg.samsung.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

drivers/rtc/rtc-max77686.c

@@ -74,12 +74,12 @@ struct max77686_rtc_driver_data {
 
 struct max77686_rtc_info {
 	struct device		*dev;
-	struct max77686_dev	*max77686;
 	struct i2c_client	*rtc;
 	struct rtc_device	*rtc_dev;
 	struct mutex		lock;
 
 	struct regmap		*regmap;
+	struct regmap		*rtc_regmap;
 
 	const struct max77686_rtc_driver_data *drv_data;
 
@@ -267,7 +267,7 @@ static int max77686_rtc_update(struct max77686_rtc_info *info,
 	else
 		data = 1 << RTC_RBUDR_SHIFT;
 
-	ret = regmap_update_bits(info->max77686->rtc_regmap,
+	ret = regmap_update_bits(info->rtc_regmap,
 				 info->drv_data->map[REG_RTC_UPDATE0],
 				 data, data);
 	if (ret < 0)
@@ -293,7 +293,7 @@ static int max77686_rtc_read_time(struct device *dev, struct rtc_time *tm)
 	if (ret < 0)
 		goto out;
 
-	ret = regmap_bulk_read(info->max77686->rtc_regmap,
+	ret = regmap_bulk_read(info->rtc_regmap,
 			       info->drv_data->map[REG_RTC_SEC],
 			       data, ARRAY_SIZE(data));
 	if (ret < 0) {
@@ -322,7 +322,7 @@ static int max77686_rtc_set_time(struct device *dev, struct rtc_time *tm)
 
 	mutex_lock(&info->lock);
 
-	ret = regmap_bulk_write(info->max77686->rtc_regmap,
+	ret = regmap_bulk_write(info->rtc_regmap,
 				info->drv_data->map[REG_RTC_SEC],
 				data, ARRAY_SIZE(data));
 	if (ret < 0) {
@@ -351,8 +351,8 @@ static int max77686_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
 	if (ret < 0)
 		goto out;
 
-	ret = regmap_bulk_read(info->max77686->rtc_regmap,
-			       map[REG_ALARM1_SEC], data, ARRAY_SIZE(data));
+	ret = regmap_bulk_read(info->rtc_regmap, map[REG_ALARM1_SEC],
+			       data, ARRAY_SIZE(data));
 	if (ret < 0) {
 		dev_err(info->dev, "Fail to read alarm reg(%d)\n", ret);
 		goto out;
@@ -370,8 +370,7 @@ static int max77686_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
 			goto out;
 		}
 
-		ret = regmap_read(info->max77686->rtc_regmap,
-				  map[REG_RTC_AE1], &val);
+		ret = regmap_read(info->rtc_regmap, map[REG_RTC_AE1], &val);
 		if (ret < 0) {
 			dev_err(info->dev,
 				"fail to read alarm enable(%d)\n", ret);
@@ -390,7 +389,7 @@ static int max77686_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
 	}
 
 	alrm->pending = 0;
-	ret = regmap_read(info->max77686->regmap, MAX77686_REG_STATUS2, &val);
+	ret = regmap_read(info->regmap, MAX77686_REG_STATUS2, &val);
 	if (ret < 0) {
 		dev_err(info->dev, "Fail to read status2 reg(%d)\n", ret);
 		goto out;
@@ -426,12 +425,10 @@ static int max77686_rtc_stop_alarm(struct max77686_rtc_info *info)
 			goto out;
 		}
 
-		ret = regmap_write(info->max77686->rtc_regmap,
-				   map[REG_RTC_AE1], 0);
+		ret = regmap_write(info->rtc_regmap, map[REG_RTC_AE1], 0);
 	} else {
-		ret = regmap_bulk_read(info->max77686->rtc_regmap,
-				       map[REG_ALARM1_SEC], data,
-				       ARRAY_SIZE(data));
+		ret = regmap_bulk_read(info->rtc_regmap, map[REG_ALARM1_SEC],
+				       data, ARRAY_SIZE(data));
 		if (ret < 0) {
 			dev_err(info->dev, "Fail to read alarm reg(%d)\n", ret);
 			goto out;
@@ -442,9 +439,8 @@ static int max77686_rtc_stop_alarm(struct max77686_rtc_info *info)
 		for (i = 0; i < ARRAY_SIZE(data); i++)
 			data[i] &= ~ALARM_ENABLE_MASK;
 
-		ret = regmap_bulk_write(info->max77686->rtc_regmap,
-					map[REG_ALARM1_SEC], data,
-					ARRAY_SIZE(data));
+		ret = regmap_bulk_write(info->rtc_regmap, map[REG_ALARM1_SEC],
+					data, ARRAY_SIZE(data));
 	}
 
 	if (ret < 0) {
@@ -472,12 +468,11 @@ static int max77686_rtc_start_alarm(struct max77686_rtc_info *info)
 		goto out;
 
 	if (info->drv_data->alarm_enable_reg) {
-		ret = regmap_write(info->max77686->rtc_regmap, map[REG_RTC_AE1],
+		ret = regmap_write(info->rtc_regmap, map[REG_RTC_AE1],
 				   MAX77802_ALARM_ENABLE_VALUE);
 	} else {
-		ret = regmap_bulk_read(info->max77686->rtc_regmap,
-				       map[REG_ALARM1_SEC], data,
-				       ARRAY_SIZE(data));
+		ret = regmap_bulk_read(info->rtc_regmap, map[REG_ALARM1_SEC],
+				       data, ARRAY_SIZE(data));
 		if (ret < 0) {
 			dev_err(info->dev, "Fail to read alarm reg(%d)\n", ret);
 			goto out;
@@ -496,9 +491,8 @@ static int max77686_rtc_start_alarm(struct max77686_rtc_info *info)
 		if (data[RTC_DATE] & 0x1f)
 			data[RTC_DATE] |= (1 << ALARM_ENABLE_SHIFT);
 
-		ret = regmap_bulk_write(info->max77686->rtc_regmap,
-					map[REG_ALARM1_SEC], data,
-					ARRAY_SIZE(data));
+		ret = regmap_bulk_write(info->rtc_regmap, map[REG_ALARM1_SEC],
+					data, ARRAY_SIZE(data));
 	}
 
 	if (ret < 0) {
@@ -527,7 +521,7 @@ static int max77686_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
 	if (ret < 0)
 		goto out;
 
-	ret = regmap_bulk_write(info->max77686->rtc_regmap,
+	ret = regmap_bulk_write(info->rtc_regmap,
 				info->drv_data->map[REG_ALARM1_SEC],
 				data, ARRAY_SIZE(data));
 
@@ -593,7 +587,7 @@ static int max77686_rtc_init_reg(struct max77686_rtc_info *info)
 
 	info->rtc_24hr_mode = 1;
 
-	ret = regmap_bulk_write(info->max77686->rtc_regmap,
+	ret = regmap_bulk_write(info->rtc_regmap,
 				info->drv_data->map[REG_RTC_CONTROLM],
 				data, ARRAY_SIZE(data));
 	if (ret < 0) {
@@ -619,13 +613,13 @@ static int max77686_rtc_probe(struct platform_device *pdev)
 
 	mutex_init(&info->lock);
 	info->dev = &pdev->dev;
-	info->max77686 = max77686;
 	info->rtc = max77686->rtc;
 	info->drv_data = (const struct max77686_rtc_driver_data *)
 		id->driver_data;
 
-	if (!info->drv_data->separate_i2c_addr)
-		info->max77686->rtc_regmap = info->max77686->regmap;
+	info->regmap = max77686->regmap;
+	info->rtc_regmap = (info->drv_data->separate_i2c_addr) ?
+			    max77686->rtc_regmap : info->regmap;
 
 	platform_set_drvdata(pdev, info);