linux-stable/drivers/clk/ti/fixed-factor.c
Dario Binacchi 3400d546a7 clk: ti: change ti_clk_register[_omap_hw]() API
The ti_clk_register() and ti_clk_register_omap_hw() functions are always
called with the parameter of type "struct device" set to NULL, since the
functions from which they are called always have a parameter of type
"struct device_node". Replacing "struct device" type parameter with
"struct device_node" will allow you to register a TI clock to the common
clock framework by taking advantage of the facilities provided by the
"struct device_node" type. Further, adding the "of_" prefix to the name
of these functions explicitly binds them to the "struct device_node"
type.

The patch has been tested on a Beaglebone board.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20221113181147.1626585-1-dario.binacchi@amarulasolutions.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2022-11-22 17:01:47 -08:00

61 lines
1.5 KiB
C

// SPDX-License-Identifier: GPL-2.0-only
/*
* TI Fixed Factor Clock
*
* Copyright (C) 2013 Texas Instruments, Inc.
*
* Tero Kristo <t-kristo@ti.com>
*/
#include <linux/clk-provider.h>
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/clk/ti.h>
#include "clock.h"
#undef pr_fmt
#define pr_fmt(fmt) "%s: " fmt, __func__
/**
* of_ti_fixed_factor_clk_setup - Setup function for TI fixed factor clock
* @node: device node for this clock
*
* Sets up a simple fixed factor clock based on device tree info.
*/
static void __init of_ti_fixed_factor_clk_setup(struct device_node *node)
{
struct clk *clk;
const char *clk_name = ti_dt_clk_name(node);
const char *parent_name;
u32 div, mult;
u32 flags = 0;
if (of_property_read_u32(node, "ti,clock-div", &div)) {
pr_err("%pOFn must have a clock-div property\n", node);
return;
}
if (of_property_read_u32(node, "ti,clock-mult", &mult)) {
pr_err("%pOFn must have a clock-mult property\n", node);
return;
}
if (of_property_read_bool(node, "ti,set-rate-parent"))
flags |= CLK_SET_RATE_PARENT;
parent_name = of_clk_get_parent_name(node, 0);
clk = clk_register_fixed_factor(NULL, clk_name, parent_name, flags,
mult, div);
if (!IS_ERR(clk)) {
of_clk_add_provider(node, of_clk_src_simple_get, clk);
of_ti_clk_autoidle_setup(node);
ti_clk_add_alias(clk, clk_name);
}
}
CLK_OF_DECLARE(ti_fixed_factor_clk, "ti,fixed-factor-clock",
of_ti_fixed_factor_clk_setup);