linux-kernel - Re: [PATCH 2/2] pwm: Add a i.MX23/28 pwm driver

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Date:	Tue, 28 Jun 2011 17:22:21 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Sascha Hauer <s.hauer@...gutronix.de>
Cc:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	viresh kumar <viresh.kumar@...com>,
	Shawn Guo <shawn.guo@...aro.org>,
	Ryan Mallon <ryan@...ewatersys.com>
Subject: Re: [PATCH 2/2] pwm: Add a i.MX23/28 pwm driver

Hi Sascha,

On Tuesday 28 June 2011, Sascha Hauer wrote:
> +
> +/* common register space */
> +static void __iomem *pwm_base_common;
> +#define REG_PWM_CTRL   0x0
> +#define PWM_SFTRST     (1 << 31)
> +#define PWM_CLKGATE    (1 << 30)
> +#define PWM_ENABLE(p)  (1 << (p))
> +

The driver looks pretty good overall, but the global pwm_base_common register
is rather ugly. I think this should really be passed down through resources
from  the platform device in one way or another.

	Arnd
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