diff options
author | Emilio López <emilio@elopez.com.ar> | 2014-07-18 20:49:37 +0200 |
---|---|---|
committer | Maxime Ripard <maxime.ripard@free-electrons.com> | 2015-10-21 21:51:28 +0200 |
commit | e2771545f49fbfec874642533058a3423fa29e16 (patch) | |
tree | 13d88512ab374afa387804554ca87de90ff6c1be /drivers/clk/sunxi | |
parent | clk: sunxi: pll2: Add A13 support (diff) | |
download | linux-e2771545f49fbfec874642533058a3423fa29e16.tar.xz linux-e2771545f49fbfec874642533058a3423fa29e16.zip |
clk: sunxi: codec clock support
The codec clock on sun4i, sun5i and sun7i is a simple gate with PLL2 as
parent. Add a driver for such a clock.
Signed-off-by: Emilio López <emilio@elopez.com.ar>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Diffstat (limited to 'drivers/clk/sunxi')
-rw-r--r-- | drivers/clk/sunxi/Makefile | 1 | ||||
-rw-r--r-- | drivers/clk/sunxi/clk-a10-codec.c | 44 |
2 files changed, 45 insertions, 0 deletions
diff --git a/drivers/clk/sunxi/Makefile b/drivers/clk/sunxi/Makefile index c658a18ba7cb..70a449a419e6 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 000000000000..ac321d6a0df5 --- /dev/null +++ b/drivers/clk/sunxi/clk-a10-codec.c @@ -0,0 +1,44 @@ +/* + * Copyright 2013 Emilio López + * + * Emilio López <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/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; + + reg = of_io_request_and_map(node, 0, of_node_full_name(node)); + if (IS_ERR(reg)) + return; + + of_property_read_string(node, "clock-output-names", &clk_name); + parent_name = of_clk_get_parent_name(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); |