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Message-id: <1410857494-15936-3-git-send-email-k.kozlowski@samsung.com> Date: Tue, 16 Sep 2014 10:51:32 +0200 From: Krzysztof Kozlowski <k.kozlowski@...sung.com> To: Russell King <linux@....linux.org.uk>, Dan Williams <dan.j.williams@...el.com>, Vinod Koul <vinod.koul@...el.com>, linux-kernel@...r.kernel.org, dmaengine@...r.kernel.org, Ulf Hansson <ulf.hansson@...aro.org>, Grant Likely <grant.likely@...aro.org>, Lars-Peter Clausen <lars@...afoo.de>, Michal Simek <michal.simek@...inx.com>, "Rafael J. Wysocki" <rjw@...ysocki.net>, Len Brown <len.brown@...el.com>, Pavel Machek <pavel@....cz>, Randy Dunlap <rdunlap@...radead.org>, Alan Stern <stern@...land.harvard.edu>, linux-doc@...r.kernel.org, linux-pm@...r.kernel.org Cc: Kyungmin Park <kyungmin.park@...sung.com>, Marek Szyprowski <m.szyprowski@...sung.com>, Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>, Krzysztof Kozlowski <k.kozlowski@...sung.com> Subject: [PATCH v4 2/4] amba: Add helper macros for (un)preparing AMBA clock Add amba_pclk_prepare() and amba_pclk_unprepare() macros for handling the AMBA bus clock by device drivers. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com> --- include/linux/amba/bus.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h index fdd7e1b61f60..ad52027a9cbf 100644 --- a/include/linux/amba/bus.h +++ b/include/linux/amba/bus.h @@ -92,6 +92,12 @@ void amba_release_regions(struct amba_device *); #define amba_pclk_disable(d) \ do { if (!IS_ERR((d)->pclk)) clk_disable((d)->pclk); } while (0) +#define amba_pclk_prepare(d) \ + (IS_ERR((d)->pclk) ? 0 : clk_prepare((d)->pclk)) + +#define amba_pclk_unprepare(d) \ + do { if (!IS_ERR((d)->pclk)) clk_unprepare((d)->pclk); } while (0) + /* Some drivers don't use the struct amba_device */ #define AMBA_CONFIG_BITS(a) (((a) >> 24) & 0xff) #define AMBA_REV_BITS(a) (((a) >> 20) & 0x0f) -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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