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/*
* Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
*
* 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.h>
#include <linux/clk-provider.h>
#include <linux/of.h>
#include <linux/clk/tegra.h>
#include "clk.h"
#define CLK_OUT_ENB_L 0x010
#define CLK_OUT_ENB_H 0x014
#define CLK_OUT_ENB_U 0x018
#define CLK_OUT_ENB_V 0x360
#define CLK_OUT_ENB_W 0x364
#define CLK_OUT_ENB_X 0x280
#define CLK_OUT_ENB_SET_L 0x320
#define CLK_OUT_ENB_CLR_L 0x324
#define CLK_OUT_ENB_SET_H 0x328
#define CLK_OUT_ENB_CLR_H 0x32c
#define CLK_OUT_ENB_SET_U 0x330
#define CLK_OUT_ENB_CLR_U 0x334
#define CLK_OUT_ENB_SET_V 0x440
#define CLK_OUT_ENB_CLR_V 0x444
#define CLK_OUT_ENB_SET_W 0x448
#define CLK_OUT_ENB_CLR_W 0x44c
#define CLK_OUT_ENB_SET_X 0x284
#define CLK_OUT_ENB_CLR_X 0x288
#define RST_DEVICES_L 0x004
#define RST_DEVICES_H 0x008
#define RST_DEVICES_U 0x00C
#define RST_DFLL_DVCO 0x2F4
#define RST_DEVICES_V 0x358
#define RST_DEVICES_W 0x35C
#define RST_DEVICES_X 0x28C
#define RST_DEVICES_SET_L 0x300
#define RST_DEVICES_CLR_L 0x304
#define RST_DEVICES_SET_H 0x308
#define RST_DEVICES_CLR_H 0x30c
#define RST_DEVICES_SET_U 0x310
#define RST_DEVICES_CLR_U 0x314
#define RST_DEVICES_SET_V 0x430
#define RST_DEVICES_CLR_V 0x434
#define RST_DEVICES_SET_W 0x438
#define RST_DEVICES_CLR_W 0x43c
/* Global data of Tegra CPU CAR ops */
static struct tegra_cpu_car_ops dummy_car_ops;
struct tegra_cpu_car_ops *tegra_cpu_car_ops = &dummy_car_ops;
static int periph_banks;
static struct tegra_clk_periph_regs periph_regs[] = {
[0] = {
.enb_reg = CLK_OUT_ENB_L,
.enb_set_reg = CLK_OUT_ENB_SET_L,
.enb_clr_reg = CLK_OUT_ENB_CLR_L,
.rst_reg = RST_DEVICES_L,
.rst_set_reg = RST_DEVICES_SET_L,
.rst_clr_reg = RST_DEVICES_CLR_L,
},
[1] = {
.enb_reg = CLK_OUT_ENB_H,
.enb_set_reg = CLK_OUT_ENB_SET_H,
.enb_clr_reg = CLK_OUT_ENB_CLR_H,
.rst_reg = RST_DEVICES_H,
.rst_set_reg = RST_DEVICES_SET_H,
.rst_clr_reg = RST_DEVICES_CLR_H,
},
[2] = {
.enb_reg = CLK_OUT_ENB_U,
.enb_set_reg = CLK_OUT_ENB_SET_U,
.enb_clr_reg = CLK_OUT_ENB_CLR_U,
.rst_reg = RST_DEVICES_U,
.rst_set_reg = RST_DEVICES_SET_U,
.rst_clr_reg = RST_DEVICES_CLR_U,
},
[3] = {
.enb_reg = CLK_OUT_ENB_V,
.enb_set_reg = CLK_OUT_ENB_SET_V,
.enb_clr_reg = CLK_OUT_ENB_CLR_V,
.rst_reg = RST_DEVICES_V,
.rst_set_reg = RST_DEVICES_SET_V,
.rst_clr_reg = RST_DEVICES_CLR_V,
},
[4] = {
.enb_reg = CLK_OUT_ENB_W,
.enb_set_reg = CLK_OUT_ENB_SET_W,
.enb_clr_reg = CLK_OUT_ENB_CLR_W,
.rst_reg = RST_DEVICES_W,
.rst_set_reg = RST_DEVICES_SET_W,
.rst_clr_reg = RST_DEVICES_CLR_W,
},
};
struct tegra_clk_periph_regs *get_reg_bank(int clkid)
{
int reg_bank = clkid / 32;
if (reg_bank < periph_banks)
return &periph_regs[reg_bank];
else {
WARN_ON(1);
return NULL;
}
}
int __init tegra_clk_set_periph_banks(int num)
{
if (num > ARRAY_SIZE(periph_regs))
return -EINVAL;
periph_banks = num;
return 0;
}
void __init tegra_init_dup_clks(struct tegra_clk_duplicate *dup_list,
struct clk *clks[], int clk_max)
{
struct clk *clk;
for (; dup_list->clk_id < clk_max; dup_list++) {
clk = clks[dup_list->clk_id];
dup_list->lookup.clk = clk;
clkdev_add(&dup_list->lookup);
}
}
void __init tegra_init_from_table(struct tegra_clk_init_table *tbl,
struct clk *clks[], int clk_max)
{
struct clk *clk;
for (; tbl->clk_id < clk_max; tbl++) {
clk = clks[tbl->clk_id];
if (IS_ERR_OR_NULL(clk))
return;
if (tbl->parent_id < clk_max) {
struct clk *parent = clks[tbl->parent_id];
if (clk_set_parent(clk, parent)) {
pr_err("%s: Failed to set parent %s of %s\n",
__func__, __clk_get_name(parent),
__clk_get_name(clk));
WARN_ON(1);
}
}
if (tbl->rate)
if (clk_set_rate(clk, tbl->rate)) {
pr_err("%s: Failed to set rate %lu of %s\n",
__func__, tbl->rate,
__clk_get_name(clk));
WARN_ON(1);
}
if (tbl->state)
if (clk_prepare_enable(clk)) {
pr_err("%s: Failed to enable %s\n", __func__,
__clk_get_name(clk));
WARN_ON(1);
}
}
}
tegra_clk_apply_init_table_func tegra_clk_apply_init_table;
void __init tegra_clocks_apply_init_table(void)
{
if (!tegra_clk_apply_init_table)
return;
tegra_clk_apply_init_table();
}
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