ab8500_bm: Always send platform specific battery information via pdata

Currently the AB8500 battery management subsystem receives platform
specific information via two different means depending on how the
platform is booted. If DT is not enabled, a reference to a *_bm_data
data structure containing each platform specific attribute is passed
though platform_data. However, if DT is enabled, then platform_data
is empty and the reference is gained though a DT specific probe
function. There are two issues here 1) the same reference is
being collected each time and 2) the DT way doesn't allow any
provisions to select different platform specific attributes, which
kind of defeats the object.

Cc: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/mfd/ab8500-core.c

@@ -1044,40 +1044,32 @@ static struct mfd_cell __devinitdata ab8500_bm_devs[] = {
 		.of_compatible = "stericsson,ab8500-charger",
 		.num_resources = ARRAY_SIZE(ab8500_charger_resources),
 		.resources = ab8500_charger_resources,
-#ifndef CONFIG_OF
 		.platform_data = &ab8500_bm_data,
 		.pdata_size = sizeof(ab8500_bm_data),
-#endif
 	},
 	{
 		.name = "ab8500-btemp",
 		.of_compatible = "stericsson,ab8500-btemp",
 		.num_resources = ARRAY_SIZE(ab8500_btemp_resources),
 		.resources = ab8500_btemp_resources,
-#ifndef CONFIG_OF
 		.platform_data = &ab8500_bm_data,
 		.pdata_size = sizeof(ab8500_bm_data),
-#endif
 	},
 	{
 		.name = "ab8500-fg",
 		.of_compatible = "stericsson,ab8500-fg",
 		.num_resources = ARRAY_SIZE(ab8500_fg_resources),
 		.resources = ab8500_fg_resources,
-#ifndef CONFIG_OF
 		.platform_data = &ab8500_bm_data,
 		.pdata_size = sizeof(ab8500_bm_data),
-#endif
 	},
 	{
 		.name = "ab8500-chargalg",
 		.of_compatible = "stericsson,ab8500-chargalg",
 		.num_resources = ARRAY_SIZE(ab8500_chargalg_resources),
 		.resources = ab8500_chargalg_resources,
-#ifndef CONFIG_OF
 		.platform_data = &ab8500_bm_data,
 		.pdata_size = sizeof(ab8500_bm_data),
-#endif
 	},
 };
 

drivers/power/ab8500_bmdata.c

@@ -454,16 +454,13 @@ struct abx500_bm_data ab8500_bm_data = {
 
 int __devinit ab8500_bm_of_probe(struct device *dev,
 				 struct device_node *np,
-				 struct abx500_bm_data **battery)
+				 struct abx500_bm_data *bm)
 {
 	struct batres_vs_temp *tmp_batres_tbl;
 	struct device_node *np_bat_supply;
-	struct abx500_bm_data *bat;
 	const char *btech;
 	int i;
 
-	*battery = &ab8500_bm_data;
-
 	/* get phandle to 'battery-info' node */
 	np_bat_supply = of_parse_phandle(np, "battery", 0);
 	if (!np_bat_supply) {
@@ -477,16 +474,14 @@ int __devinit ab8500_bm_of_probe(struct device *dev,
 		return -EINVAL;
 	}
 
-	bat = *battery;
-
 	if (strncmp(btech, "LION", 4) == 0) {
-		bat->no_maintenance  = true;
-		bat->chg_unknown_bat = true;
-		bat->bat_type[BATTERY_UNKNOWN].charge_full_design = 2600;
-		bat->bat_type[BATTERY_UNKNOWN].termination_vol    = 4150;
-		bat->bat_type[BATTERY_UNKNOWN].recharge_vol	  = 4130;
-		bat->bat_type[BATTERY_UNKNOWN].normal_cur_lvl	  = 520;
-		bat->bat_type[BATTERY_UNKNOWN].normal_vol_lvl	  = 4200;
+		bm->no_maintenance  = true;
+		bm->chg_unknown_bat = true;
+		bm->bat_type[BATTERY_UNKNOWN].charge_full_design = 2600;
+		bm->bat_type[BATTERY_UNKNOWN].termination_vol    = 4150;
+		bm->bat_type[BATTERY_UNKNOWN].recharge_vol       = 4130;
+		bm->bat_type[BATTERY_UNKNOWN].normal_cur_lvl     = 520;
+		bm->bat_type[BATTERY_UNKNOWN].normal_vol_lvl     = 4200;
 	}
 
 	if (of_property_read_bool(np_bat_supply, "thermistor-on-batctrl")) {
@@ -495,15 +490,15 @@ int __devinit ab8500_bm_of_probe(struct device *dev,
 		else
 			tmp_batres_tbl = temp_to_batres_tbl_thermistor;
 	} else {
-		bat->n_btypes   = 4;
-		bat->bat_type   = bat_type_ext_thermistor;
-		bat->adc_therm  = ABx500_ADC_THERM_BATTEMP;
-		tmp_batres_tbl  = temp_to_batres_tbl_ext_thermistor;
+		bm->n_btypes   = 4;
+		bm->bat_type   = bat_type_ext_thermistor;
+		bm->adc_therm  = ABx500_ADC_THERM_BATTEMP;
+		tmp_batres_tbl = temp_to_batres_tbl_ext_thermistor;
 	}
 
 	/* select the battery resolution table */
-	for (i = 0; i < bat->n_btypes; ++i)
-		bat->bat_type[i]->batres_tbl = tmp_batres_tbl;
+	for (i = 0; i < bm->n_btypes; ++i)
+		bm->bat_type[i].batres_tbl = tmp_batres_tbl;
 
 	of_node_put(np_bat_supply);
 

drivers/power/ab8500_btemp.c

@@ -988,7 +988,7 @@ static int __devinit ab8500_btemp_probe(struct platform_device *pdev)
 	di->bm = pdev->mfd_cell->platform_data;
 	if (!di->bm) {
 		if (np) {
-			ret = ab8500_bm_of_probe(&pdev->dev, np, &di->bm);
+			ret = ab8500_bm_of_probe(&pdev->dev, np, di->bm);
 			if (ret) {
 				dev_err(&pdev->dev,
 					"failed to get battery information\n");

drivers/power/ab8500_charger.c

@@ -2647,7 +2647,7 @@ static int __devinit ab8500_charger_probe(struct platform_device *pdev)
 	di->bm = pdev->mfd_cell->platform_data;
 	if (!di->bm) {
 		if (np) {
-			ret = ab8500_bm_of_probe(&pdev->dev, np, &di->bm);
+			ret = ab8500_bm_of_probe(&pdev->dev, np, di->bm);
 			if (ret) {
 				dev_err(&pdev->dev,
 					"failed to get battery information\n");

drivers/power/ab8500_fg.c

@@ -2460,7 +2460,7 @@ static int __devinit ab8500_fg_probe(struct platform_device *pdev)
 	di->bm = pdev->mfd_cell->platform_data;
 	if (!di->bm) {
 		if (np) {
-			ret = ab8500_bm_of_probe(&pdev->dev, np, &di->bm);
+			ret = ab8500_bm_of_probe(&pdev->dev, np, di->bm);
 			if (ret) {
 				dev_err(&pdev->dev,
 					"failed to get battery information\n");

drivers/power/abx500_chargalg.c

@@ -1817,7 +1817,7 @@ static int __devinit abx500_chargalg_probe(struct platform_device *pdev)
 	di->bm = pdev->mfd_cell->platform_data;
 	if (!di->bm) {
 		if (np) {
-			ret = ab8500_bm_of_probe(&pdev->dev, np, &di->bm);
+			ret = ab8500_bm_of_probe(&pdev->dev, np, di->bm);
 			if (ret) {
 				dev_err(&pdev->dev,
 					"failed to get battery information\n");

include/linux/mfd/abx500.h

@@ -281,7 +281,7 @@ enum {
 
 int ab8500_bm_of_probe(struct device *dev,
 		       struct device_node *np,
-		       struct abx500_bm_data **battery);
+		       struct abx500_bm_data *bm);
 
 int abx500_set_register_interruptible(struct device *dev, u8 bank, u8 reg,
 	u8 value);