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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-06-10 05:30:17 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-06-10 05:30:17 -0300
commitd635711daa98be86d4c7fd01499c34f566b54ccb (patch)
treeaa5cc3760a27c3d57146498cb82fa549547de06c /drivers/clk/shmobile/clk-rz.c
parentc91265cd0efb83778f015b4d4b1129bd2cfd075e (diff)
Linux-libre 4.6.2-gnu
Diffstat (limited to 'drivers/clk/shmobile/clk-rz.c')
-rw-r--r--drivers/clk/shmobile/clk-rz.c106
1 files changed, 0 insertions, 106 deletions
diff --git a/drivers/clk/shmobile/clk-rz.c b/drivers/clk/shmobile/clk-rz.c
deleted file mode 100644
index 9766e3cb5..000000000
--- a/drivers/clk/shmobile/clk-rz.c
+++ /dev/null
@@ -1,106 +0,0 @@
-/*
- * rz Core CPG Clocks
- *
- * Copyright (C) 2013 Ideas On Board SPRL
- * Copyright (C) 2014 Wolfram Sang, Sang Engineering <wsa@sang-engineering.com>
- *
- * 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; version 2 of the License.
- */
-
-#include <linux/clk-provider.h>
-#include <linux/clk/shmobile.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/slab.h>
-
-struct rz_cpg {
- struct clk_onecell_data data;
- void __iomem *reg;
-};
-
-#define CPG_FRQCR 0x10
-#define CPG_FRQCR2 0x14
-
-/* -----------------------------------------------------------------------------
- * Initialization
- */
-
-static struct clk * __init
-rz_cpg_register_clock(struct device_node *np, struct rz_cpg *cpg, const char *name)
-{
- u32 val;
- unsigned mult;
- static const unsigned frqcr_tab[4] = { 3, 2, 0, 1 };
-
- if (strcmp(name, "pll") == 0) {
- /* FIXME: cpg_mode should be read from GPIO. But no GPIO support yet */
- unsigned cpg_mode = 0; /* hardcoded to EXTAL for now */
- const char *parent_name = of_clk_get_parent_name(np, cpg_mode);
-
- mult = cpg_mode ? (32 / 4) : 30;
-
- return clk_register_fixed_factor(NULL, name, parent_name, 0, mult, 1);
- }
-
- /* If mapping regs failed, skip non-pll clocks. System will boot anyhow */
- if (!cpg->reg)
- return ERR_PTR(-ENXIO);
-
- /* FIXME:"i" and "g" are variable clocks with non-integer dividers (e.g. 2/3)
- * and the constraint that always g <= i. To get the rz platform started,
- * let them run at fixed current speed and implement the details later.
- */
- if (strcmp(name, "i") == 0)
- val = (clk_readl(cpg->reg + CPG_FRQCR) >> 8) & 3;
- else if (strcmp(name, "g") == 0)
- val = clk_readl(cpg->reg + CPG_FRQCR2) & 3;
- else
- return ERR_PTR(-EINVAL);
-
- mult = frqcr_tab[val];
- return clk_register_fixed_factor(NULL, name, "pll", 0, mult, 3);
-}
-
-static void __init rz_cpg_clocks_init(struct device_node *np)
-{
- struct rz_cpg *cpg;
- struct clk **clks;
- unsigned i;
- int num_clks;
-
- num_clks = of_property_count_strings(np, "clock-output-names");
- if (WARN(num_clks <= 0, "can't count CPG clocks\n"))
- return;
-
- cpg = kzalloc(sizeof(*cpg), GFP_KERNEL);
- clks = kzalloc(num_clks * sizeof(*clks), GFP_KERNEL);
- BUG_ON(!cpg || !clks);
-
- cpg->data.clks = clks;
- cpg->data.clk_num = num_clks;
-
- cpg->reg = of_iomap(np, 0);
-
- for (i = 0; i < num_clks; ++i) {
- const char *name;
- struct clk *clk;
-
- of_property_read_string_index(np, "clock-output-names", i, &name);
-
- clk = rz_cpg_register_clock(np, cpg, name);
- if (IS_ERR(clk))
- pr_err("%s: failed to register %s %s clock (%ld)\n",
- __func__, np->name, name, PTR_ERR(clk));
- else
- cpg->data.clks[i] = clk;
- }
-
- of_clk_add_provider(np, of_clk_src_onecell_get, &cpg->data);
-
- cpg_mstp_add_clk_domain(np);
-}
-CLK_OF_DECLARE(rz_cpg_clks, "renesas,rz-cpg-clocks", rz_cpg_clocks_init);