Messages in this thread Patch in this message | | | From | Johannes Weiner <> | Subject | [patch 06/12] xtensa: implement CLK API | Date | Tue, 14 Apr 2009 11:41:14 +0200 |
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From: Daniel Glöckner <dg@emlix.com>
Implement access to the peripheral clock (half of cpu clock) by means of the generic CLK API.
Signed-off-by: Daniel Glöckner <dg@emlix.com> --- arch/xtensa/platforms/s6105/Makefile | 2 +- arch/xtensa/platforms/s6105/clocks.c | 49 ++++++++++++++++++++++++++++++++++ 2 files changed, 50 insertions(+), 1 deletions(-) create mode 100644 arch/xtensa/platforms/s6105/clocks.c
diff --git a/arch/xtensa/platforms/s6105/Makefile b/arch/xtensa/platforms/s6105/Makefile index 0be6194..294427b 100644 --- a/arch/xtensa/platforms/s6105/Makefile +++ b/arch/xtensa/platforms/s6105/Makefile @@ -1,3 +1,3 @@ # Makefile for the Stretch S6105 eval board -obj-y := setup.o device.o +obj-y := setup.o device.o clocks.o diff --git a/arch/xtensa/platforms/s6105/clocks.c b/arch/xtensa/platforms/s6105/clocks.c new file mode 100644 index 0000000..fcd3bad --- /dev/null +++ b/arch/xtensa/platforms/s6105/clocks.c @@ -0,0 +1,49 @@ +/* + * Copyright (c) 2009 emlix GmbH + * Author: Daniel Gloeckner <dg@emlix.com> + */ + +#include <linux/clk.h> +#include <linux/err.h> +#include <linux/module.h> +#include <linux/string.h> +#include <asm/param.h> +#include <asm/timex.h> + +struct clk { + unsigned long rate; +}; + +static struct clk pclk; + +struct clk *clk_get(struct device *dev, const char *id) +{ + if (!strcmp(id, "PCLK")) { + pclk.rate = CCOUNT_PER_JIFFY * HZ / 2; + return &pclk; + } + return ERR_PTR(-ENODEV); +} +EXPORT_SYMBOL(clk_get); + +int clk_enable(struct clk *clk) +{ + return 0; +} +EXPORT_SYMBOL(clk_enable); + +void clk_disable(struct clk *clk) +{ +} +EXPORT_SYMBOL(clk_disable); + +unsigned long clk_get_rate(struct clk *clk) +{ + return clk->rate; +} +EXPORT_SYMBOL(clk_get_rate); + +void clk_put(struct clk *clk) +{ +} +EXPORT_SYMBOL(clk_put); -- 1.6.2.107.ge47ee -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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