linux-kernel - Re: [PATCH v2 02/12] clocksource: sti: Provide support for the ST LPC Clocksource IP

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Date:	Tue, 12 May 2015 17:55:24 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Lee Jones <lee.jones@...aro.org>
cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org, daniel.lezcano@...aro.org,
	wim@...ana.be, a.zummo@...ertech.it,
	linux-watchdog@...r.kernel.org, rtc-linux@...glegroups.com,
	linux@...ck-us.net, kernel@...inux.com
Subject: Re: [PATCH v2 02/12] clocksource: sti: Provide support for the ST
 LPC Clocksource IP

On Tue, 12 May 2015, Lee Jones wrote:
> +static void st_clksrc_reset(void)

__init

> +static int st_clksrc_setup_clk(struct device_node *np)

__init

> +static void __init st_clksrc_of_register(struct device_node *np)
> +{
> +	int ret;
> +	uint32_t mode;
> +
> +	ret = of_property_read_u32(np, "st,lpc-mode", &mode);
> +	if (ret) {
> +		pr_err("clksrc-st-lpc: An LPC mode must be provided\n");
> +		return;
> +	}
> +
> +	/* LPC can either run as a Clocksource or in RTC or WDT mode */
> +	if (mode != ST_LPC_MODE_CLKSRC)
> +		return;
> +
> +	ddata.base = of_iomap(np, 0);
> +	if (!ddata.base) {
> +		pr_err("clksrc-st-lpc: Unable to map iomem\n");
> +		return;
> +	}
> +
> +	if (st_clksrc_setup_clk(np)) {
> +		iounmap(ddata.base);
> +		return;
> +	}
> +
> +	if (st_clksrc_init()) {

Keeps the clock enabled.

> +		iounmap(ddata.base);
> +		return;

Thanks,

	tglx
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