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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-r8a7778.c
parentc91265cd0efb83778f015b4d4b1129bd2cfd075e (diff)
Linux-libre 4.6.2-gnu
Diffstat (limited to 'drivers/clk/shmobile/clk-r8a7778.c')
-rw-r--r--drivers/clk/shmobile/clk-r8a7778.c145
1 files changed, 0 insertions, 145 deletions
diff --git a/drivers/clk/shmobile/clk-r8a7778.c b/drivers/clk/shmobile/clk-r8a7778.c
deleted file mode 100644
index b1741551f..000000000
--- a/drivers/clk/shmobile/clk-r8a7778.c
+++ /dev/null
@@ -1,145 +0,0 @@
-/*
- * r8a7778 Core CPG Clocks
- *
- * Copyright (C) 2014 Ulrich Hecht
- *
- * 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/of_address.h>
-#include <linux/slab.h>
-
-struct r8a7778_cpg {
- struct clk_onecell_data data;
- spinlock_t lock;
- void __iomem *reg;
-};
-
-/* PLL multipliers per bits 11, 12, and 18 of MODEMR */
-static const struct {
- unsigned long plla_mult;
- unsigned long pllb_mult;
-} r8a7778_rates[] __initconst = {
- [0] = { 21, 21 },
- [1] = { 24, 24 },
- [2] = { 28, 28 },
- [3] = { 32, 32 },
- [5] = { 24, 21 },
- [6] = { 28, 21 },
- [7] = { 32, 24 },
-};
-
-/* Clock dividers per bits 1 and 2 of MODEMR */
-static const struct {
- const char *name;
- unsigned int div[4];
-} r8a7778_divs[6] __initconst = {
- { "b", { 12, 12, 16, 18 } },
- { "out", { 12, 12, 16, 18 } },
- { "p", { 16, 12, 16, 12 } },
- { "s", { 4, 3, 4, 3 } },
- { "s1", { 8, 6, 8, 6 } },
-};
-
-static u32 cpg_mode_rates __initdata;
-static u32 cpg_mode_divs __initdata;
-
-static struct clk * __init
-r8a7778_cpg_register_clock(struct device_node *np, struct r8a7778_cpg *cpg,
- const char *name)
-{
- if (!strcmp(name, "plla")) {
- return clk_register_fixed_factor(NULL, "plla",
- of_clk_get_parent_name(np, 0), 0,
- r8a7778_rates[cpg_mode_rates].plla_mult, 1);
- } else if (!strcmp(name, "pllb")) {
- return clk_register_fixed_factor(NULL, "pllb",
- of_clk_get_parent_name(np, 0), 0,
- r8a7778_rates[cpg_mode_rates].pllb_mult, 1);
- } else {
- unsigned int i;
-
- for (i = 0; i < ARRAY_SIZE(r8a7778_divs); i++) {
- if (!strcmp(name, r8a7778_divs[i].name)) {
- return clk_register_fixed_factor(NULL,
- r8a7778_divs[i].name,
- "plla", 0, 1,
- r8a7778_divs[i].div[cpg_mode_divs]);
- }
- }
- }
-
- return ERR_PTR(-EINVAL);
-}
-
-
-static void __init r8a7778_cpg_clocks_init(struct device_node *np)
-{
- struct r8a7778_cpg *cpg;
- struct clk **clks;
- unsigned int i;
- int num_clks;
-
- num_clks = of_property_count_strings(np, "clock-output-names");
- if (num_clks < 0) {
- pr_err("%s: failed to count clocks\n", __func__);
- return;
- }
-
- cpg = kzalloc(sizeof(*cpg), GFP_KERNEL);
- clks = kcalloc(num_clks, sizeof(*clks), GFP_KERNEL);
- if (cpg == NULL || clks == NULL) {
- /* We're leaking memory on purpose, there's no point in cleaning
- * up as the system won't boot anyway.
- */
- return;
- }
-
- spin_lock_init(&cpg->lock);
-
- cpg->data.clks = clks;
- cpg->data.clk_num = num_clks;
-
- cpg->reg = of_iomap(np, 0);
- if (WARN_ON(cpg->reg == NULL))
- return;
-
- 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 = r8a7778_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(r8a7778_cpg_clks, "renesas,r8a7778-cpg-clocks",
- r8a7778_cpg_clocks_init);
-
-void __init r8a7778_clocks_init(u32 mode)
-{
- BUG_ON(!(mode & BIT(19)));
-
- cpg_mode_rates = (!!(mode & BIT(18)) << 2) |
- (!!(mode & BIT(12)) << 1) |
- (!!(mode & BIT(11)));
- cpg_mode_divs = (!!(mode & BIT(2)) << 1) |
- (!!(mode & BIT(1)));
-
- of_clk_init(NULL);
-}