c942fddf87
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>
74 lines
1.6 KiB
C
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);
|