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8f8f484bf3
Add Tegra specific clocks, pll, pll_out, peripheral, frac_divider, super.
Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com>
[swarren: alloc sizeof(*foo) not sizeof(struct foo), add comments re:
storing pointers to stack variables, make a timeout loop more idiomatic,
use _clk_pll_disable() not clk_disable_pll() from _program_pll() to
avoid redundant lock operations, unified tegra_clk_periph() and
tegra_clk_periph_nodiv(), unified tegra_clk_pll{,e}, rename all clock
registration functions so they don't have the same name as the clock
structs, return -EINVAL from clk_plle_enable when matching table rate
not found, pass ops to _tegra_clk_register_pll rather than a bool.]
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
70 lines
1.8 KiB
C
70 lines
1.8 KiB
C
/*
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* Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <linux/clk.h>
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#include <linux/clk-provider.h>
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#include "clk.h"
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void __init tegra_init_dup_clks(struct tegra_clk_duplicate *dup_list,
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struct clk *clks[], int clk_max)
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{
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struct clk *clk;
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for (; dup_list->clk_id < clk_max; dup_list++) {
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clk = clks[dup_list->clk_id];
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dup_list->lookup.clk = clk;
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clkdev_add(&dup_list->lookup);
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}
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}
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void __init tegra_init_from_table(struct tegra_clk_init_table *tbl,
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struct clk *clks[], int clk_max)
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{
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struct clk *clk;
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for (; tbl->clk_id < clk_max; tbl++) {
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clk = clks[tbl->clk_id];
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if (IS_ERR_OR_NULL(clk))
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return;
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if (tbl->parent_id < clk_max) {
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struct clk *parent = clks[tbl->parent_id];
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if (clk_set_parent(clk, parent)) {
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pr_err("%s: Failed to set parent %s of %s\n",
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__func__, __clk_get_name(parent),
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__clk_get_name(clk));
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WARN_ON(1);
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}
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}
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if (tbl->rate)
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if (clk_set_rate(clk, tbl->rate)) {
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pr_err("%s: Failed to set rate %lu of %s\n",
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__func__, tbl->rate,
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__clk_get_name(clk));
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WARN_ON(1);
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}
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if (tbl->state)
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if (clk_prepare_enable(clk)) {
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pr_err("%s: Failed to enable %s\n", __func__,
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__clk_get_name(clk));
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WARN_ON(1);
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}
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}
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}
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