linux-kernel - Re: [PATCH v5 3/7] power: supply: olpc_battery: Use DT to get battery version

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Message-ID: <20190123203805.qhmilqqozkgrchoy@earth.universe>
Date:   Wed, 23 Jan 2019 21:38:05 +0100
From:   Sebastian Reichel <sre@...nel.org>
To:     Lubomir Rintel <lkundrak@...sk>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>, x86@...nel.org,
        linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Pavel Machek <pavel@....cz>
Subject: Re: [PATCH v5 3/7] power: supply: olpc_battery: Use DT to get
 battery version

Hi,

On Thu, Jan 10, 2019 at 06:40:01PM +0100, Lubomir Rintel wrote:
> Avoid using the x86 OLPC platform specific call to get the board
> version. That wouldn't work on FDT-based ARM MMP2 platform.
> 
> Add the XO 1.5 compatible string too. This is actually not completely
> necessary as the battery nodes on XO 1.5 claim to be compatible with
> "olpc,xo1-battery", but there are, in fact, differencies.
> 
> Signed-off-by: Lubomir Rintel <lkundrak@...sk>
> Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>
> Acked-by: Pavel Machek <pavel@....cz>
> Reviewed-by: Sebastian Reichel <sebastian.reichel@...labora.com>
> 
> ---
> Changes since v2:
> - Clarify the XO 1 compatibility in the commit message.
> 
> Changes since v1:
> - Sort the new include a bit higher
> 
>  drivers/power/supply/olpc_battery.c | 10 +++++++---
>  1 file changed, 7 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/power/supply/olpc_battery.c b/drivers/power/supply/olpc_battery.c
> index 5a97e42a3547..5323987d9284 100644
> --- a/drivers/power/supply/olpc_battery.c
> +++ b/drivers/power/supply/olpc_battery.c
> @@ -14,6 +14,7 @@
>  #include <linux/types.h>
>  #include <linux/err.h>
>  #include <linux/device.h>
> +#include <linux/of.h>
>  #include <linux/platform_device.h>
>  #include <linux/power_supply.h>
>  #include <linux/jiffies.h>
> @@ -622,11 +623,13 @@ static int olpc_battery_probe(struct platform_device *pdev)
>  	olpc_ac = power_supply_register(&pdev->dev, &olpc_ac_desc, NULL);
>  	if (IS_ERR(olpc_ac))
>  		return PTR_ERR(olpc_ac);
> -
> -	if (olpc_board_at_least(olpc_board_pre(0xd0))) { /* XO-1.5 */
> +	if (of_property_match_string(pdev->dev.of_node, "compatible",
> +					"olpc,xo1.5-battery") >= 0) {

of_device_is_compatible(...)

-- Sebastian

> +		/* XO-1.5 */
>  		olpc_bat_desc.properties = olpc_xo15_bat_props;
>  		olpc_bat_desc.num_properties = ARRAY_SIZE(olpc_xo15_bat_props);
> -	} else { /* XO-1 */
> +	} else {
> +		/* XO-1 */
>  		olpc_bat_desc.properties = olpc_xo1_bat_props;
>  		olpc_bat_desc.num_properties = ARRAY_SIZE(olpc_xo1_bat_props);
>  	}
> @@ -672,6 +675,7 @@ static int olpc_battery_remove(struct platform_device *pdev)
>  
>  static const struct of_device_id olpc_battery_ids[] = {
>  	{ .compatible = "olpc,xo1-battery" },
> +	{ .compatible = "olpc,xo1.5-battery" },
>  	{}
>  };
>  MODULE_DEVICE_TABLE(of, olpc_battery_ids);
> -- 
> 2.20.1
> 

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