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path: root/drivers/clk/meson/clkc.c
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Diffstat (limited to 'drivers/clk/meson/clkc.c')
-rw-r--r--drivers/clk/meson/clkc.c249
1 files changed, 0 insertions, 249 deletions
diff --git a/drivers/clk/meson/clkc.c b/drivers/clk/meson/clkc.c
deleted file mode 100644
index d920d410b..000000000
--- a/drivers/clk/meson/clkc.c
+++ /dev/null
@@ -1,249 +0,0 @@
-/*
- * Copyright (c) 2015 Endless Mobile, Inc.
- * Author: Carlo Caione <carlo@endlessm.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope 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.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <linux/clk-provider.h>
-#include <linux/mfd/syscon.h>
-#include <linux/slab.h>
-
-#include "clkc.h"
-
-static DEFINE_SPINLOCK(clk_lock);
-
-static struct clk **clks;
-static struct clk_onecell_data clk_data;
-
-struct clk ** __init meson_clk_init(struct device_node *np,
- unsigned long nr_clks)
-{
- clks = kcalloc(nr_clks, sizeof(*clks), GFP_KERNEL);
- if (!clks)
- return ERR_PTR(-ENOMEM);
-
- clk_data.clks = clks;
- clk_data.clk_num = nr_clks;
- of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
-
- return clks;
-}
-
-static void meson_clk_add_lookup(struct clk *clk, unsigned int id)
-{
- if (clks && id)
- clks[id] = clk;
-}
-
-static struct clk * __init
-meson_clk_register_composite(const struct clk_conf *clk_conf,
- void __iomem *clk_base)
-{
- struct clk *clk;
- struct clk_mux *mux = NULL;
- struct clk_divider *div = NULL;
- struct clk_gate *gate = NULL;
- const struct clk_ops *mux_ops = NULL;
- const struct composite_conf *composite_conf;
-
- composite_conf = clk_conf->conf.composite;
-
- if (clk_conf->num_parents > 1) {
- mux = kzalloc(sizeof(*mux), GFP_KERNEL);
- if (!mux)
- return ERR_PTR(-ENOMEM);
-
- mux->reg = clk_base + clk_conf->reg_off
- + composite_conf->mux_parm.reg_off;
- mux->shift = composite_conf->mux_parm.shift;
- mux->mask = BIT(composite_conf->mux_parm.width) - 1;
- mux->flags = composite_conf->mux_flags;
- mux->lock = &clk_lock;
- mux->table = composite_conf->mux_table;
- mux_ops = (composite_conf->mux_flags & CLK_MUX_READ_ONLY) ?
- &clk_mux_ro_ops : &clk_mux_ops;
- }
-
- if (MESON_PARM_APPLICABLE(&composite_conf->div_parm)) {
- div = kzalloc(sizeof(*div), GFP_KERNEL);
- if (!div) {
- clk = ERR_PTR(-ENOMEM);
- goto error;
- }
-
- div->reg = clk_base + clk_conf->reg_off
- + composite_conf->div_parm.reg_off;
- div->shift = composite_conf->div_parm.shift;
- div->width = composite_conf->div_parm.width;
- div->lock = &clk_lock;
- div->flags = composite_conf->div_flags;
- div->table = composite_conf->div_table;
- }
-
- if (MESON_PARM_APPLICABLE(&composite_conf->gate_parm)) {
- gate = kzalloc(sizeof(*gate), GFP_KERNEL);
- if (!gate) {
- clk = ERR_PTR(-ENOMEM);
- goto error;
- }
-
- gate->reg = clk_base + clk_conf->reg_off
- + composite_conf->div_parm.reg_off;
- gate->bit_idx = composite_conf->gate_parm.shift;
- gate->flags = composite_conf->gate_flags;
- gate->lock = &clk_lock;
- }
-
- clk = clk_register_composite(NULL, clk_conf->clk_name,
- clk_conf->clks_parent,
- clk_conf->num_parents,
- mux ? &mux->hw : NULL, mux_ops,
- div ? &div->hw : NULL, &clk_divider_ops,
- gate ? &gate->hw : NULL, &clk_gate_ops,
- clk_conf->flags);
- if (IS_ERR(clk))
- goto error;
-
- return clk;
-
-error:
- kfree(gate);
- kfree(div);
- kfree(mux);
-
- return clk;
-}
-
-static struct clk * __init
-meson_clk_register_fixed_factor(const struct clk_conf *clk_conf,
- void __iomem *clk_base)
-{
- struct clk *clk;
- const struct fixed_fact_conf *fixed_fact_conf;
- const struct parm *p;
- unsigned int mult, div;
- u32 reg;
-
- fixed_fact_conf = &clk_conf->conf.fixed_fact;
-
- mult = clk_conf->conf.fixed_fact.mult;
- div = clk_conf->conf.fixed_fact.div;
-
- if (!mult) {
- mult = 1;
- p = &fixed_fact_conf->mult_parm;
- if (MESON_PARM_APPLICABLE(p)) {
- reg = readl(clk_base + clk_conf->reg_off + p->reg_off);
- mult = PARM_GET(p->width, p->shift, reg);
- }
- }
-
- if (!div) {
- div = 1;
- p = &fixed_fact_conf->div_parm;
- if (MESON_PARM_APPLICABLE(p)) {
- reg = readl(clk_base + clk_conf->reg_off + p->reg_off);
- mult = PARM_GET(p->width, p->shift, reg);
- }
- }
-
- clk = clk_register_fixed_factor(NULL,
- clk_conf->clk_name,
- clk_conf->clks_parent[0],
- clk_conf->flags,
- mult, div);
-
- return clk;
-}
-
-static struct clk * __init
-meson_clk_register_fixed_rate(const struct clk_conf *clk_conf,
- void __iomem *clk_base)
-{
- struct clk *clk;
- const struct fixed_rate_conf *fixed_rate_conf;
- const struct parm *r;
- unsigned long rate;
- u32 reg;
-
- fixed_rate_conf = &clk_conf->conf.fixed_rate;
- rate = fixed_rate_conf->rate;
-
- if (!rate) {
- r = &fixed_rate_conf->rate_parm;
- reg = readl(clk_base + clk_conf->reg_off + r->reg_off);
- rate = PARM_GET(r->width, r->shift, reg);
- }
-
- rate *= 1000000;
-
- clk = clk_register_fixed_rate(NULL,
- clk_conf->clk_name,
- clk_conf->num_parents
- ? clk_conf->clks_parent[0] : NULL,
- clk_conf->flags, rate);
-
- return clk;
-}
-
-void __init meson_clk_register_clks(const struct clk_conf *clk_confs,
- unsigned int nr_confs,
- void __iomem *clk_base)
-{
- unsigned int i;
- struct clk *clk = NULL;
-
- for (i = 0; i < nr_confs; i++) {
- const struct clk_conf *clk_conf = &clk_confs[i];
-
- switch (clk_conf->clk_type) {
- case CLK_FIXED_RATE:
- clk = meson_clk_register_fixed_rate(clk_conf,
- clk_base);
- break;
- case CLK_FIXED_FACTOR:
- clk = meson_clk_register_fixed_factor(clk_conf,
- clk_base);
- break;
- case CLK_COMPOSITE:
- clk = meson_clk_register_composite(clk_conf,
- clk_base);
- break;
- case CLK_CPU:
- clk = meson_clk_register_cpu(clk_conf, clk_base,
- &clk_lock);
- break;
- case CLK_PLL:
- clk = meson_clk_register_pll(clk_conf, clk_base,
- &clk_lock);
- break;
- default:
- clk = NULL;
- }
-
- if (!clk) {
- pr_err("%s: unknown clock type %d\n", __func__,
- clk_conf->clk_type);
- continue;
- }
-
- if (IS_ERR(clk)) {
- pr_warn("%s: Unable to create %s clock\n", __func__,
- clk_conf->clk_name);
- continue;
- }
-
- meson_clk_add_lookup(clk, clk_conf->clk_id);
- }
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-05 21:08:48 +0000