[RFC 2/8] clk: sunxi: codec clock support
From: emilio@elopez.com.ar (Emilio López)
Date: 2014-07-28 03:49:40
Subsystem:
arm/allwinner soc clock support, common clk framework, the rest · Maintainers:
Emilio López, Michael Turquette, Stephen Boyd, Linus Torvalds
The codec clock on sun4i, sun5i and sun7i is a simple gate with PLL2 as parent. Signed-off-by: Emilio L?pez <emilio@elopez.com.ar> --- drivers/clk/sunxi/Makefile | 1 + drivers/clk/sunxi/clk-a10-codec.c | 41 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 42 insertions(+) create mode 100644 drivers/clk/sunxi/clk-a10-codec.c
diff --git a/drivers/clk/sunxi/Makefile b/drivers/clk/sunxi/Makefile
index dcd5709..a7a96f8 100644
--- a/drivers/clk/sunxi/Makefile
+++ b/drivers/clk/sunxi/Makefile@@ -3,6 +3,7 @@ # obj-y += clk-sunxi.o clk-factors.o +obj-y += clk-a10-codec.o obj-y += clk-a10-hosc.o obj-y += clk-a10-pll2.o obj-y += clk-a20-gmac.o
diff --git a/drivers/clk/sunxi/clk-a10-codec.c b/drivers/clk/sunxi/clk-a10-codec.c
new file mode 100644
index 0000000..c70acbf
--- /dev/null
+++ b/drivers/clk/sunxi/clk-a10-codec.c@@ -0,0 +1,41 @@ +/* + * Copyright 2013 Emilio L?pez + * + * Emilio L?pez <emilio@elopez.com.ar> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/clk-provider.h> +#include <linux/clkdev.h> +#include <linux/of.h> +#include <linux/of_address.h> + +#define SUN4I_CODEC_GATE 31 + +static void __init sun4i_codec_clk_setup(struct device_node *node) +{ + struct clk *clk; + const char *clk_name = node->name, *parent_name; + void __iomem *reg; + + of_property_read_string(node, "clock-output-names", &clk_name); + parent_name = of_clk_get_parent_name(node, 0); + reg = of_iomap(node, 0); + + clk = clk_register_gate(NULL, clk_name, parent_name, + CLK_SET_RATE_PARENT, reg, + SUN4I_CODEC_GATE, 0, NULL); + + if (!IS_ERR(clk)) + of_clk_add_provider(node, of_clk_src_simple_get, clk); +} +CLK_OF_DECLARE(sun4i_codec, "allwinner,sun4i-a10-codec-clk", sun4i_codec_clk_setup);
--
2.0.3