target/linux/sunxi/patches-4.1/162-clk-sunxi-codec-clock.patch

   1 From 9b95732096c11d84bd0082aed0d575d8c09e3ab6 Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?Emilio=20L=C3=B3pez?= <emilio@elopez.com.ar>
   3 Date: Fri, 18 Jul 2014 15:49:37 -0300
   4 Subject: [PATCH] clk: sunxi: codec clock support
   5 MIME-Version: 1.0
   6 Content-Type: text/plain; charset=UTF-8
   7 Content-Transfer-Encoding: 8bit
   8
   9 The codec clock on sun4i, sun5i and sun7i is a simple gate with PLL2 as
  10 parent.
  11
  12 Signed-off-by: Emilio López <emilio@elopez.com.ar>
  13 Signed-off-by: Hans de Goede <hdegoede@redhat.com>
  14 ---
  15  drivers/clk/sunxi/Makefile        |  1 +
  16  drivers/clk/sunxi/clk-a10-codec.c | 41 +++++++++++++++++++++++++++++++++++++++
  17  2 files changed, 42 insertions(+)
  18  create mode 100644 drivers/clk/sunxi/clk-a10-codec.c
  19
  20 --- a/drivers/clk/sunxi/Makefile
  21 +++ b/drivers/clk/sunxi/Makefile
  22 @@ -3,6 +3,7 @@
  23  #
  24
  25  obj-y += clk-sunxi.o clk-factors.o
  26 +obj-y += clk-a10-codec.o
  27  obj-y += clk-a10-hosc.o
  28  obj-y += clk-a10-pll2.o
  29  obj-y += clk-a20-gmac.o
  30 --- /dev/null
  31 +++ b/drivers/clk/sunxi/clk-a10-codec.c
  32 @@ -0,0 +1,41 @@
  33 +/*
  34 + * Copyright 2013 Emilio López
  35 + *
  36 + * Emilio López <emilio@elopez.com.ar>
  37 + *
  38 + * This program is free software; you can redistribute it and/or modify
  39 + * it under the terms of the GNU General Public License as published by
  40 + * the Free Software Foundation; either version 2 of the License, or
  41 + * (at your option) any later version.
  42 + *
  43 + * This program is distributed in the hope that it will be useful,
  44 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
  45 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  46 + * GNU General Public License for more details.
  47 + */
  48 +
  49 +#include <linux/clk-provider.h>
  50 +#include <linux/clkdev.h>
  51 +#include <linux/of.h>
  52 +#include <linux/of_address.h>
  53 +
  54 +#define SUN4I_CODEC_GATE       31
  55 +
  56 +static void __init sun4i_codec_clk_setup(struct device_node *node)
  57 +{
  58 +       struct clk *clk;
  59 +       const char *clk_name = node->name, *parent_name;
  60 +       void __iomem *reg;
  61 +
  62 +       of_property_read_string(node, "clock-output-names", &clk_name);
  63 +       parent_name = of_clk_get_parent_name(node, 0);
  64 +       reg = of_iomap(node, 0);
  65 +
  66 +       clk = clk_register_gate(NULL, clk_name, parent_name,
  67 +                               CLK_SET_RATE_PARENT, reg,
  68 +                               SUN4I_CODEC_GATE, 0, NULL);
  69 +
  70 +       if (!IS_ERR(clk))
  71 +               of_clk_add_provider(node, of_clk_src_simple_get, clk);
  72 +}
  73 +CLK_OF_DECLARE(sun4i_codec, "allwinner,sun4i-a10-codec-clk", sun4i_codec_clk_setup);