linux/drivers/clk/sunxi/clk-a10-mod1.c
Thomas Gleixner c942fddf87 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
Based on 3 normalized pattern(s):

  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

  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 [author] [kishon] [vijay] [abraham]
  [i] [kishon]@[ti] [com] 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

  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 [author] [graeme] [gregory]
  [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i]
  [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema]
  [hk] [hemahk]@[ti] [com] 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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1105 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:37 -07:00

74 lines
1.6 KiB
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright 2013 Emilio López
*
* Emilio López <emilio@elopez.com.ar>
*/
#include <linux/clk-provider.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/slab.h>
static DEFINE_SPINLOCK(mod1_lock);
#define SUN4I_MOD1_ENABLE 31
#define SUN4I_MOD1_MUX 16
#define SUN4I_MOD1_MUX_WIDTH 2
#define SUN4I_MOD1_MAX_PARENTS 4
static void __init sun4i_mod1_clk_setup(struct device_node *node)
{
struct clk *clk;
struct clk_mux *mux;
struct clk_gate *gate;
const char *parents[4];
const char *clk_name = node->name;
void __iomem *reg;
int i;
reg = of_io_request_and_map(node, 0, of_node_full_name(node));
if (IS_ERR(reg))
return;
mux = kzalloc(sizeof(*mux), GFP_KERNEL);
if (!mux)
goto err_unmap;
gate = kzalloc(sizeof(*gate), GFP_KERNEL);
if (!gate)
goto err_free_mux;
of_property_read_string(node, "clock-output-names", &clk_name);
i = of_clk_parent_fill(node, parents, SUN4I_MOD1_MAX_PARENTS);
gate->reg = reg;
gate->bit_idx = SUN4I_MOD1_ENABLE;
gate->lock = &mod1_lock;
mux->reg = reg;
mux->shift = SUN4I_MOD1_MUX;
mux->mask = BIT(SUN4I_MOD1_MUX_WIDTH) - 1;
mux->lock = &mod1_lock;
clk = clk_register_composite(NULL, clk_name, parents, i,
&mux->hw, &clk_mux_ops,
NULL, NULL,
&gate->hw, &clk_gate_ops, CLK_SET_RATE_PARENT);
if (IS_ERR(clk))
goto err_free_gate;
of_clk_add_provider(node, of_clk_src_simple_get, clk);
return;
err_free_gate:
kfree(gate);
err_free_mux:
kfree(mux);
err_unmap:
iounmap(reg);
}
CLK_OF_DECLARE(sun4i_mod1, "allwinner,sun4i-a10-mod1-clk",
sun4i_mod1_clk_setup);