Re: [PATCH v2 16/17] power: supply: olpc_battery: Avoid using platform_info

This wouldn't work on the DT-based ARM platform. Let's read the EC version
directly from the EC driver instead.

This makes the driver no longer x86 specific.

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Acked-by: Pavel Machek <redacted>

---
Changes since v1:
- Use uint8_t instead of unsigned char [1] for ecver

 drivers/power/supply/Kconfig        |  2 +-
 drivers/power/supply/olpc_battery.c | 35 +++++++++++++++++++++--------
 2 files changed, 27 insertions(+), 10 deletions(-)

diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig
index f27cf0709500..dd7ae1431098 100644
--- a/drivers/power/supply/Kconfig
+++ b/drivers/power/supply/Kconfig

@@ -151,7 +151,7 @@ config BATTERY_PMU
 
 config BATTERY_OLPC
 	tristate "One Laptop Per Child battery"
-	depends on X86_32 && OLPC
+	depends on OLPC
 	help
 	  Say Y to enable support for the battery on the OLPC laptop.
 

diff --git a/drivers/power/supply/olpc_battery.c b/drivers/power/supply/olpc_battery.c
index 4433eb10a23d..ec5dfb8fcb8a 100644
--- a/drivers/power/supply/olpc_battery.c
+++ b/drivers/power/supply/olpc_battery.c

@@ -20,8 +20,6 @@
 #include <linux/jiffies.h>
 #include <linux/sched.h>
 #include <linux/olpc-ec.h>
-#include <asm/olpc.h>
-
 
 #define EC_BAT_VOLTAGE	0x10	/* uint16_t,	*9.76/32,    mV   */
 #define EC_BAT_CURRENT	0x11	/* int16_t,	*15.625/120, mA   */

@@ -57,6 +55,7 @@ struct olpc_battery_data {
 	struct power_supply *olpc_ac;
 	struct power_supply *olpc_bat;
 	char bat_serial[17];
+	int new_proto;
 };
 
 /*********************************************************************

@@ -100,7 +99,7 @@ static const struct power_supply_desc olpc_ac_desc = {
 static int olpc_bat_get_status(struct olpc_battery_data *data,
 		union power_supply_propval *val, uint8_t ec_byte)
 {
-	if (olpc_platform_info.ecver > 0x44) {
+	if (data->new_proto) {
 		if (ec_byte & (BAT_STAT_CHARGING | BAT_STAT_TRICKLE))
 			val->intval = POWER_SUPPLY_STATUS_CHARGING;
 		else if (ec_byte & BAT_STAT_DISCHARGING)

@@ -608,14 +607,32 @@ static int olpc_battery_probe(struct platform_device *pdev)
 	struct power_supply_config psy_cfg = {};
 	struct olpc_battery_data *data;
 	uint8_t status;
+	uint8_t ecver;
+	int ret;
+
+	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+	platform_set_drvdata(pdev, data);