mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-11-01 17:08:10 +00:00
6f4d3c13b7
The pointer clk is being initialized with a value that is never read
and is being updated with a new value later on. The initialization
is redundant and can be removed.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lkml.kernel.org/r/20200526224116.63549-1-colin.king@canonical.com
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
98 lines
2.5 KiB
C
98 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* Clock driver for the ARM Integrator/AP, Integrator/CP, Versatile AB and
|
|
* Versatile PB boards.
|
|
* Copyright (C) 2012 Linus Walleij
|
|
*/
|
|
#include <linux/clk-provider.h>
|
|
#include <linux/err.h>
|
|
#include <linux/of.h>
|
|
#include <linux/of_address.h>
|
|
|
|
#include "icst.h"
|
|
#include "clk-icst.h"
|
|
|
|
#define INTEGRATOR_HDR_LOCK_OFFSET 0x14
|
|
|
|
#define VERSATILE_SYS_OSCCLCD_OFFSET 0x1c
|
|
#define VERSATILE_SYS_LOCK_OFFSET 0x20
|
|
|
|
/* Base offset for the core module */
|
|
static void __iomem *cm_base;
|
|
|
|
static const struct icst_params cp_auxosc_params = {
|
|
.vco_max = ICST525_VCO_MAX_5V,
|
|
.vco_min = ICST525_VCO_MIN,
|
|
.vd_min = 8,
|
|
.vd_max = 263,
|
|
.rd_min = 3,
|
|
.rd_max = 65,
|
|
.s2div = icst525_s2div,
|
|
.idx2s = icst525_idx2s,
|
|
};
|
|
|
|
static const struct clk_icst_desc cm_auxosc_desc __initconst = {
|
|
.params = &cp_auxosc_params,
|
|
.vco_offset = 0x1c,
|
|
.lock_offset = INTEGRATOR_HDR_LOCK_OFFSET,
|
|
};
|
|
|
|
static const struct icst_params versatile_auxosc_params = {
|
|
.vco_max = ICST307_VCO_MAX,
|
|
.vco_min = ICST307_VCO_MIN,
|
|
.vd_min = 4 + 8,
|
|
.vd_max = 511 + 8,
|
|
.rd_min = 1 + 2,
|
|
.rd_max = 127 + 2,
|
|
.s2div = icst307_s2div,
|
|
.idx2s = icst307_idx2s,
|
|
};
|
|
|
|
static const struct clk_icst_desc versatile_auxosc_desc __initconst = {
|
|
.params = &versatile_auxosc_params,
|
|
.vco_offset = VERSATILE_SYS_OSCCLCD_OFFSET,
|
|
.lock_offset = VERSATILE_SYS_LOCK_OFFSET,
|
|
};
|
|
static void __init cm_osc_setup(struct device_node *np,
|
|
const struct clk_icst_desc *desc)
|
|
{
|
|
struct clk *clk;
|
|
const char *clk_name = np->name;
|
|
const char *parent_name;
|
|
|
|
if (!cm_base) {
|
|
/* Remap the core module base if not done yet */
|
|
struct device_node *parent;
|
|
|
|
parent = of_get_parent(np);
|
|
if (!parent) {
|
|
pr_err("no parent on core module clock\n");
|
|
return;
|
|
}
|
|
cm_base = of_iomap(parent, 0);
|
|
of_node_put(parent);
|
|
if (!cm_base) {
|
|
pr_err("could not remap core module base\n");
|
|
return;
|
|
}
|
|
}
|
|
|
|
parent_name = of_clk_get_parent_name(np, 0);
|
|
clk = icst_clk_register(NULL, desc, clk_name, parent_name, cm_base);
|
|
if (!IS_ERR(clk))
|
|
of_clk_add_provider(np, of_clk_src_simple_get, clk);
|
|
}
|
|
|
|
static void __init of_integrator_cm_osc_setup(struct device_node *np)
|
|
{
|
|
cm_osc_setup(np, &cm_auxosc_desc);
|
|
}
|
|
CLK_OF_DECLARE(integrator_cm_auxosc_clk,
|
|
"arm,integrator-cm-auxosc", of_integrator_cm_osc_setup);
|
|
|
|
static void __init of_versatile_cm_osc_setup(struct device_node *np)
|
|
{
|
|
cm_osc_setup(np, &versatile_auxosc_desc);
|
|
}
|
|
CLK_OF_DECLARE(versatile_cm_auxosc_clk,
|
|
"arm,versatile-cm-auxosc", of_versatile_cm_osc_setup);
|