2019-05-28 17:10:04 +00:00
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// SPDX-License-Identifier: GPL-2.0-only
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clk: tegra: add Tegra specific clocks
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>
2013-01-11 07:46:20 +00:00
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/*
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* Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
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*/
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2015-06-19 22:00:46 +00:00
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#include <linux/clkdev.h>
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clk: tegra: add Tegra specific clocks
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>
2013-01-11 07:46:20 +00:00
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#include <linux/clk.h>
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#include <linux/clk-provider.h>
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2017-03-02 14:16:16 +00:00
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#include <linux/delay.h>
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2019-04-18 22:20:22 +00:00
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#include <linux/io.h>
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2013-01-11 07:46:26 +00:00
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#include <linux/of.h>
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2021-11-30 23:23:12 +00:00
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#include <linux/of_device.h>
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2013-01-11 07:46:26 +00:00
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#include <linux/clk/tegra.h>
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2021-11-30 23:23:12 +00:00
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#include <linux/platform_device.h>
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#include <linux/pm_runtime.h>
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2013-11-06 00:33:17 +00:00
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#include <linux/reset-controller.h>
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2021-11-30 23:23:12 +00:00
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#include <linux/string.h>
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2014-07-17 11:17:24 +00:00
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#include <soc/tegra/fuse.h>
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clk: tegra: add Tegra specific clocks
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>
2013-01-11 07:46:20 +00:00
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#include "clk.h"
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2013-01-11 07:46:26 +00:00
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/* Global data of Tegra CPU CAR ops */
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2021-11-30 23:23:12 +00:00
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static struct device_node *tegra_car_np;
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2013-04-03 14:40:35 +00:00
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static struct tegra_cpu_car_ops dummy_car_ops;
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struct tegra_cpu_car_ops *tegra_cpu_car_ops = &dummy_car_ops;
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2013-01-11 07:46:26 +00:00
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2013-09-02 12:22:02 +00:00
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int *periph_clk_enb_refcnt;
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2013-08-22 15:44:06 +00:00
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static int periph_banks;
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2019-08-16 19:42:00 +00:00
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static u32 *periph_state_ctx;
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2013-09-02 12:22:02 +00:00
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static struct clk **clks;
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static int clk_num;
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static struct clk_onecell_data clk_data;
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2013-08-22 15:44:06 +00:00
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2015-05-20 06:27:05 +00:00
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/* Handlers for SoC-specific reset lines */
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static int (*special_reset_assert)(unsigned long);
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static int (*special_reset_deassert)(unsigned long);
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static unsigned int num_special_reset;
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2015-04-20 12:38:39 +00:00
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static const struct tegra_clk_periph_regs periph_regs[] = {
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2013-08-22 15:44:06 +00:00
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[0] = {
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.enb_reg = CLK_OUT_ENB_L,
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.enb_set_reg = CLK_OUT_ENB_SET_L,
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.enb_clr_reg = CLK_OUT_ENB_CLR_L,
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.rst_reg = RST_DEVICES_L,
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.rst_set_reg = RST_DEVICES_SET_L,
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.rst_clr_reg = RST_DEVICES_CLR_L,
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},
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[1] = {
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.enb_reg = CLK_OUT_ENB_H,
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.enb_set_reg = CLK_OUT_ENB_SET_H,
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.enb_clr_reg = CLK_OUT_ENB_CLR_H,
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.rst_reg = RST_DEVICES_H,
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.rst_set_reg = RST_DEVICES_SET_H,
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.rst_clr_reg = RST_DEVICES_CLR_H,
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},
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[2] = {
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.enb_reg = CLK_OUT_ENB_U,
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.enb_set_reg = CLK_OUT_ENB_SET_U,
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.enb_clr_reg = CLK_OUT_ENB_CLR_U,
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.rst_reg = RST_DEVICES_U,
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.rst_set_reg = RST_DEVICES_SET_U,
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.rst_clr_reg = RST_DEVICES_CLR_U,
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},
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[3] = {
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.enb_reg = CLK_OUT_ENB_V,
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.enb_set_reg = CLK_OUT_ENB_SET_V,
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.enb_clr_reg = CLK_OUT_ENB_CLR_V,
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.rst_reg = RST_DEVICES_V,
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.rst_set_reg = RST_DEVICES_SET_V,
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.rst_clr_reg = RST_DEVICES_CLR_V,
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},
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[4] = {
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.enb_reg = CLK_OUT_ENB_W,
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.enb_set_reg = CLK_OUT_ENB_SET_W,
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.enb_clr_reg = CLK_OUT_ENB_CLR_W,
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.rst_reg = RST_DEVICES_W,
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.rst_set_reg = RST_DEVICES_SET_W,
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.rst_clr_reg = RST_DEVICES_CLR_W,
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},
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2013-09-11 14:57:37 +00:00
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[5] = {
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.enb_reg = CLK_OUT_ENB_X,
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.enb_set_reg = CLK_OUT_ENB_SET_X,
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.enb_clr_reg = CLK_OUT_ENB_CLR_X,
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.rst_reg = RST_DEVICES_X,
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.rst_set_reg = RST_DEVICES_SET_X,
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.rst_clr_reg = RST_DEVICES_CLR_X,
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},
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2015-03-23 09:52:45 +00:00
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[6] = {
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.enb_reg = CLK_OUT_ENB_Y,
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.enb_set_reg = CLK_OUT_ENB_SET_Y,
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.enb_clr_reg = CLK_OUT_ENB_CLR_Y,
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.rst_reg = RST_DEVICES_Y,
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.rst_set_reg = RST_DEVICES_SET_Y,
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.rst_clr_reg = RST_DEVICES_CLR_Y,
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},
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2013-08-22 15:44:06 +00:00
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};
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2013-11-06 00:33:17 +00:00
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static void __iomem *clk_base;
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static int tegra_clk_rst_assert(struct reset_controller_dev *rcdev,
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unsigned long id)
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{
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/*
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* If peripheral is on the APB bus then we must read the APB bus to
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* flush the write operation in apb bus. This will avoid peripheral
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* access after disabling clock. Since the reset driver has no
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* knowledge of which reset IDs represent which devices, simply do
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* this all the time.
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*/
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tegra_read_chipid();
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2015-05-20 06:27:05 +00:00
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if (id < periph_banks * 32) {
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writel_relaxed(BIT(id % 32),
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clk_base + periph_regs[id / 32].rst_set_reg);
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return 0;
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} else if (id < periph_banks * 32 + num_special_reset) {
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return special_reset_assert(id);
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}
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2013-11-06 00:33:17 +00:00
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2015-05-20 06:27:05 +00:00
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return -EINVAL;
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2013-11-06 00:33:17 +00:00
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}
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static int tegra_clk_rst_deassert(struct reset_controller_dev *rcdev,
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unsigned long id)
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{
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2015-05-20 06:27:05 +00:00
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if (id < periph_banks * 32) {
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writel_relaxed(BIT(id % 32),
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clk_base + periph_regs[id / 32].rst_clr_reg);
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return 0;
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} else if (id < periph_banks * 32 + num_special_reset) {
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return special_reset_deassert(id);
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}
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2013-11-06 00:33:17 +00:00
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2015-05-20 06:27:05 +00:00
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return -EINVAL;
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2013-11-06 00:33:17 +00:00
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}
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2017-03-02 14:16:16 +00:00
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static int tegra_clk_rst_reset(struct reset_controller_dev *rcdev,
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unsigned long id)
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{
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int err;
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err = tegra_clk_rst_assert(rcdev, id);
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if (err)
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return err;
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udelay(1);
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return tegra_clk_rst_deassert(rcdev, id);
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}
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2015-04-20 12:38:39 +00:00
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const struct tegra_clk_periph_regs *get_reg_bank(int clkid)
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2013-08-22 15:44:06 +00:00
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{
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int reg_bank = clkid / 32;
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if (reg_bank < periph_banks)
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return &periph_regs[reg_bank];
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else {
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WARN_ON(1);
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return NULL;
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}
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}
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2019-08-16 19:41:54 +00:00
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void tegra_clk_set_pllp_out_cpu(bool enable)
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{
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u32 val;
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val = readl_relaxed(clk_base + CLK_OUT_ENB_Y);
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if (enable)
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val |= CLK_ENB_PLLP_OUT_CPU;
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else
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val &= ~CLK_ENB_PLLP_OUT_CPU;
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writel_relaxed(val, clk_base + CLK_OUT_ENB_Y);
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}
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2019-08-16 19:42:00 +00:00
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void tegra_clk_periph_suspend(void)
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{
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unsigned int i, idx;
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idx = 0;
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for (i = 0; i < periph_banks; i++, idx++)
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periph_state_ctx[idx] =
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readl_relaxed(clk_base + periph_regs[i].enb_reg);
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for (i = 0; i < periph_banks; i++, idx++)
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periph_state_ctx[idx] =
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readl_relaxed(clk_base + periph_regs[i].rst_reg);
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}
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void tegra_clk_periph_resume(void)
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{
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unsigned int i, idx;
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idx = 0;
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for (i = 0; i < periph_banks; i++, idx++)
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writel_relaxed(periph_state_ctx[idx],
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clk_base + periph_regs[i].enb_reg);
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/*
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* All non-boot peripherals will be in reset state on resume.
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* Wait for 5us of reset propagation delay before de-asserting
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* the peripherals based on the saved context.
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*/
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fence_udelay(5, clk_base);
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for (i = 0; i < periph_banks; i++, idx++)
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writel_relaxed(periph_state_ctx[idx],
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clk_base + periph_regs[i].rst_reg);
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fence_udelay(2, clk_base);
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}
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static int tegra_clk_periph_ctx_init(int banks)
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{
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periph_state_ctx = kcalloc(2 * banks, sizeof(*periph_state_ctx),
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GFP_KERNEL);
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if (!periph_state_ctx)
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return -ENOMEM;
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return 0;
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}
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2013-11-06 00:33:17 +00:00
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struct clk ** __init tegra_clk_init(void __iomem *regs, int num, int banks)
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2013-08-22 15:44:06 +00:00
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{
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2013-11-06 00:33:17 +00:00
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clk_base = regs;
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2013-09-02 12:22:02 +00:00
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if (WARN_ON(banks > ARRAY_SIZE(periph_regs)))
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return NULL;
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treewide: kzalloc() -> kcalloc()
The kzalloc() function has a 2-factor argument form, kcalloc(). This
patch replaces cases of:
kzalloc(a * b, gfp)
with:
kcalloc(a * b, gfp)
as well as handling cases of:
kzalloc(a * b * c, gfp)
with:
kzalloc(array3_size(a, b, c), gfp)
as it's slightly less ugly than:
kzalloc_array(array_size(a, b), c, gfp)
This does, however, attempt to ignore constant size factors like:
kzalloc(4 * 1024, gfp)
though any constants defined via macros get caught up in the conversion.
Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.
The Coccinelle script used for this was:
// Fix redundant parens around sizeof().
@@
type TYPE;
expression THING, E;
@@
(
kzalloc(
- (sizeof(TYPE)) * E
+ sizeof(TYPE) * E
, ...)
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kzalloc(
- (sizeof(THING)) * E
+ sizeof(THING) * E
, ...)
)
// Drop single-byte sizes and redundant parens.
@@
expression COUNT;
typedef u8;
typedef __u8;
@@
(
kzalloc(
- sizeof(u8) * (COUNT)
+ COUNT
, ...)
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kzalloc(
- sizeof(__u8) * (COUNT)
+ COUNT
, ...)
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kzalloc(
- sizeof(char) * (COUNT)
+ COUNT
, ...)
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kzalloc(
- sizeof(unsigned char) * (COUNT)
+ COUNT
, ...)
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kzalloc(
- sizeof(u8) * COUNT
+ COUNT
, ...)
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kzalloc(
- sizeof(__u8) * COUNT
+ COUNT
, ...)
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kzalloc(
- sizeof(char) * COUNT
+ COUNT
, ...)
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kzalloc(
- sizeof(unsigned char) * COUNT
+ COUNT
, ...)
)
// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@
(
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * (COUNT_ID)
+ COUNT_ID, sizeof(TYPE)
, ...)
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- kzalloc
+ kcalloc
(
- sizeof(TYPE) * COUNT_ID
+ COUNT_ID, sizeof(TYPE)
, ...)
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- kzalloc
+ kcalloc
(
- sizeof(TYPE) * (COUNT_CONST)
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * COUNT_CONST
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * (COUNT_ID)
+ COUNT_ID, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * COUNT_ID
+ COUNT_ID, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * (COUNT_CONST)
+ COUNT_CONST, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * COUNT_CONST
+ COUNT_CONST, sizeof(THING)
, ...)
)
// 2-factor product, only identifiers.
@@
identifier SIZE, COUNT;
@@
- kzalloc
+ kcalloc
(
- SIZE * COUNT
+ COUNT, SIZE
, ...)
// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@
(
kzalloc(
- sizeof(TYPE) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(TYPE) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(TYPE) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(TYPE) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
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kzalloc(
- sizeof(THING) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc(
- sizeof(THING) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc(
- sizeof(THING) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc(
- sizeof(THING) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
)
// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@
(
kzalloc(
- sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
kzalloc(
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
kzalloc(
- sizeof(THING1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
kzalloc(
- sizeof(THING1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
kzalloc(
- sizeof(TYPE1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
|
kzalloc(
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
)
// 3-factor product, only identifiers, with redundant parens removed.
@@
identifier STRIDE, SIZE, COUNT;
@@
(
kzalloc(
- (COUNT) * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- (COUNT) * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- (COUNT) * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- (COUNT) * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
)
// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression E1, E2, E3;
constant C1, C2, C3;
@@
(
kzalloc(C1 * C2 * C3, ...)
|
kzalloc(
- (E1) * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc(
- (E1) * (E2) * E3
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc(
- (E1) * (E2) * (E3)
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc(
- E1 * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
)
// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@
(
kzalloc(sizeof(THING) * C2, ...)
|
kzalloc(sizeof(TYPE) * C2, ...)
|
kzalloc(C1 * C2 * C3, ...)
|
kzalloc(C1 * C2, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * (E2)
+ E2, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * E2
+ E2, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * (E2)
+ E2, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * E2
+ E2, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- (E1) * E2
+ E1, E2
, ...)
|
- kzalloc
+ kcalloc
(
- (E1) * (E2)
+ E1, E2
, ...)
|
- kzalloc
+ kcalloc
(
- E1 * E2
+ E1, E2
, ...)
)
Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-12 21:03:40 +00:00
|
|
|
periph_clk_enb_refcnt = kcalloc(32 * banks,
|
|
|
|
sizeof(*periph_clk_enb_refcnt),
|
|
|
|
GFP_KERNEL);
|
2013-09-02 12:22:02 +00:00
|
|
|
if (!periph_clk_enb_refcnt)
|
|
|
|
return NULL;
|
2013-08-22 15:44:06 +00:00
|
|
|
|
2013-09-02 12:22:02 +00:00
|
|
|
periph_banks = banks;
|
2013-08-22 15:44:06 +00:00
|
|
|
|
treewide: kzalloc() -> kcalloc()
The kzalloc() function has a 2-factor argument form, kcalloc(). This
patch replaces cases of:
kzalloc(a * b, gfp)
with:
kcalloc(a * b, gfp)
as well as handling cases of:
kzalloc(a * b * c, gfp)
with:
kzalloc(array3_size(a, b, c), gfp)
as it's slightly less ugly than:
kzalloc_array(array_size(a, b), c, gfp)
This does, however, attempt to ignore constant size factors like:
kzalloc(4 * 1024, gfp)
though any constants defined via macros get caught up in the conversion.
Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.
The Coccinelle script used for this was:
// Fix redundant parens around sizeof().
@@
type TYPE;
expression THING, E;
@@
(
kzalloc(
- (sizeof(TYPE)) * E
+ sizeof(TYPE) * E
, ...)
|
kzalloc(
- (sizeof(THING)) * E
+ sizeof(THING) * E
, ...)
)
// Drop single-byte sizes and redundant parens.
@@
expression COUNT;
typedef u8;
typedef __u8;
@@
(
kzalloc(
- sizeof(u8) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(__u8) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(char) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(unsigned char) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(u8) * COUNT
+ COUNT
, ...)
|
kzalloc(
- sizeof(__u8) * COUNT
+ COUNT
, ...)
|
kzalloc(
- sizeof(char) * COUNT
+ COUNT
, ...)
|
kzalloc(
- sizeof(unsigned char) * COUNT
+ COUNT
, ...)
)
// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@
(
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * (COUNT_ID)
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * COUNT_ID
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * (COUNT_CONST)
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * COUNT_CONST
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * (COUNT_ID)
+ COUNT_ID, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * COUNT_ID
+ COUNT_ID, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * (COUNT_CONST)
+ COUNT_CONST, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * COUNT_CONST
+ COUNT_CONST, sizeof(THING)
, ...)
)
// 2-factor product, only identifiers.
@@
identifier SIZE, COUNT;
@@
- kzalloc
+ kcalloc
(
- SIZE * COUNT
+ COUNT, SIZE
, ...)
// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@
(
kzalloc(
- sizeof(TYPE) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(TYPE) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(TYPE) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(TYPE) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(THING) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc(
- sizeof(THING) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc(
- sizeof(THING) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc(
- sizeof(THING) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
)
// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@
(
kzalloc(
- sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
kzalloc(
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
kzalloc(
- sizeof(THING1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
kzalloc(
- sizeof(THING1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
kzalloc(
- sizeof(TYPE1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
|
kzalloc(
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
)
// 3-factor product, only identifiers, with redundant parens removed.
@@
identifier STRIDE, SIZE, COUNT;
@@
(
kzalloc(
- (COUNT) * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- (COUNT) * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- (COUNT) * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- (COUNT) * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
)
// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression E1, E2, E3;
constant C1, C2, C3;
@@
(
kzalloc(C1 * C2 * C3, ...)
|
kzalloc(
- (E1) * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc(
- (E1) * (E2) * E3
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc(
- (E1) * (E2) * (E3)
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc(
- E1 * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
)
// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@
(
kzalloc(sizeof(THING) * C2, ...)
|
kzalloc(sizeof(TYPE) * C2, ...)
|
kzalloc(C1 * C2 * C3, ...)
|
kzalloc(C1 * C2, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * (E2)
+ E2, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * E2
+ E2, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * (E2)
+ E2, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * E2
+ E2, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- (E1) * E2
+ E1, E2
, ...)
|
- kzalloc
+ kcalloc
(
- (E1) * (E2)
+ E1, E2
, ...)
|
- kzalloc
+ kcalloc
(
- E1 * E2
+ E1, E2
, ...)
)
Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-12 21:03:40 +00:00
|
|
|
clks = kcalloc(num, sizeof(struct clk *), GFP_KERNEL);
|
2019-12-10 02:05:12 +00:00
|
|
|
if (!clks) {
|
2013-09-02 12:22:02 +00:00
|
|
|
kfree(periph_clk_enb_refcnt);
|
2019-12-10 02:05:12 +00:00
|
|
|
return NULL;
|
|
|
|
}
|
2013-09-02 12:22:02 +00:00
|
|
|
|
|
|
|
clk_num = num;
|
|
|
|
|
2019-08-16 19:42:00 +00:00
|
|
|
if (IS_ENABLED(CONFIG_PM_SLEEP)) {
|
|
|
|
if (tegra_clk_periph_ctx_init(banks)) {
|
|
|
|
kfree(periph_clk_enb_refcnt);
|
|
|
|
kfree(clks);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-09-02 12:22:02 +00:00
|
|
|
return clks;
|
2013-08-22 15:44:06 +00:00
|
|
|
}
|
|
|
|
|
clk: tegra: add Tegra specific clocks
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>
2013-01-11 07:46:20 +00:00
|
|
|
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);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2021-11-30 23:23:12 +00:00
|
|
|
void tegra_init_from_table(struct tegra_clk_init_table *tbl,
|
|
|
|
struct clk *clks[], int clk_max)
|
clk: tegra: add Tegra specific clocks
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>
2013-01-11 07:46:20 +00:00
|
|
|
{
|
|
|
|
struct clk *clk;
|
|
|
|
|
|
|
|
for (; tbl->clk_id < clk_max; tbl++) {
|
|
|
|
clk = clks[tbl->clk_id];
|
2014-09-17 09:34:17 +00:00
|
|
|
if (IS_ERR_OR_NULL(clk)) {
|
|
|
|
pr_err("%s: invalid entry %ld in clks array for id %d\n",
|
|
|
|
__func__, PTR_ERR(clk), tbl->clk_id);
|
|
|
|
WARN_ON(1);
|
|
|
|
|
|
|
|
continue;
|
|
|
|
}
|
clk: tegra: add Tegra specific clocks
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>
2013-01-11 07:46:20 +00:00
|
|
|
|
|
|
|
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);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
2013-01-11 07:46:26 +00:00
|
|
|
|
2016-02-25 09:45:11 +00:00
|
|
|
static const struct reset_control_ops rst_ops = {
|
2013-11-06 00:33:17 +00:00
|
|
|
.assert = tegra_clk_rst_assert,
|
|
|
|
.deassert = tegra_clk_rst_deassert,
|
2017-03-02 14:16:16 +00:00
|
|
|
.reset = tegra_clk_rst_reset,
|
2013-11-06 00:33:17 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
static struct reset_controller_dev rst_ctlr = {
|
|
|
|
.ops = &rst_ops,
|
|
|
|
.owner = THIS_MODULE,
|
|
|
|
.of_reset_n_cells = 1,
|
|
|
|
};
|
|
|
|
|
2018-05-08 16:26:06 +00:00
|
|
|
void __init tegra_add_of_provider(struct device_node *np,
|
|
|
|
void *clk_src_onecell_get)
|
2013-09-02 12:22:02 +00:00
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
2021-11-30 23:23:12 +00:00
|
|
|
tegra_car_np = np;
|
|
|
|
|
2013-09-02 12:22:02 +00:00
|
|
|
for (i = 0; i < clk_num; i++) {
|
|
|
|
if (IS_ERR(clks[i])) {
|
|
|
|
pr_err
|
|
|
|
("Tegra clk %d: register failed with %ld\n",
|
|
|
|
i, PTR_ERR(clks[i]));
|
|
|
|
}
|
|
|
|
if (!clks[i])
|
|
|
|
clks[i] = ERR_PTR(-EINVAL);
|
|
|
|
}
|
|
|
|
|
|
|
|
clk_data.clks = clks;
|
|
|
|
clk_data.clk_num = clk_num;
|
2018-05-08 16:26:06 +00:00
|
|
|
of_clk_add_provider(np, clk_src_onecell_get, &clk_data);
|
2013-11-06 00:33:17 +00:00
|
|
|
|
|
|
|
rst_ctlr.of_node = np;
|
2015-05-20 06:27:05 +00:00
|
|
|
rst_ctlr.nr_resets = periph_banks * 32 + num_special_reset;
|
2013-11-06 00:33:17 +00:00
|
|
|
reset_controller_register(&rst_ctlr);
|
2013-09-02 12:22:02 +00:00
|
|
|
}
|
|
|
|
|
2015-05-20 06:27:05 +00:00
|
|
|
void __init tegra_init_special_resets(unsigned int num,
|
|
|
|
int (*assert)(unsigned long),
|
|
|
|
int (*deassert)(unsigned long))
|
|
|
|
{
|
|
|
|
num_special_reset = num;
|
|
|
|
special_reset_assert = assert;
|
|
|
|
special_reset_deassert = deassert;
|
|
|
|
}
|
|
|
|
|
2021-11-30 23:23:12 +00:00
|
|
|
void tegra_register_devclks(struct tegra_devclk *dev_clks, int num)
|
2013-10-09 11:47:57 +00:00
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; i < num; i++, dev_clks++)
|
|
|
|
clk_register_clkdev(clks[dev_clks->dt_id], dev_clks->con_id,
|
|
|
|
dev_clks->dev_id);
|
2014-06-26 15:36:13 +00:00
|
|
|
|
|
|
|
for (i = 0; i < clk_num; i++) {
|
|
|
|
if (!IS_ERR_OR_NULL(clks[i]))
|
|
|
|
clk_register_clkdev(clks[i], __clk_get_name(clks[i]),
|
|
|
|
"tegra-clk-debug");
|
|
|
|
}
|
2013-10-09 11:47:57 +00:00
|
|
|
}
|
|
|
|
|
2013-10-14 13:47:37 +00:00
|
|
|
struct clk ** __init tegra_lookup_dt_id(int clk_id,
|
|
|
|
struct tegra_clk *tegra_clk)
|
|
|
|
{
|
|
|
|
if (tegra_clk[clk_id].present)
|
|
|
|
return &clks[tegra_clk[clk_id].dt_id];
|
|
|
|
else
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2021-11-30 23:23:12 +00:00
|
|
|
static struct device_node *tegra_clk_get_of_node(struct clk_hw *hw)
|
|
|
|
{
|
|
|
|
struct device_node *np;
|
|
|
|
char *node_name;
|
|
|
|
|
|
|
|
node_name = kstrdup(hw->init->name, GFP_KERNEL);
|
|
|
|
if (!node_name)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
strreplace(node_name, '_', '-');
|
|
|
|
|
|
|
|
for_each_child_of_node(tegra_car_np, np) {
|
|
|
|
if (!strcmp(np->name, node_name))
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
kfree(node_name);
|
|
|
|
|
|
|
|
return np;
|
|
|
|
}
|
|
|
|
|
|
|
|
struct clk *tegra_clk_dev_register(struct clk_hw *hw)
|
|
|
|
{
|
|
|
|
struct platform_device *pdev, *parent;
|
|
|
|
const char *dev_name = NULL;
|
|
|
|
struct device *dev = NULL;
|
|
|
|
struct device_node *np;
|
|
|
|
|
|
|
|
np = tegra_clk_get_of_node(hw);
|
|
|
|
|
|
|
|
if (!of_device_is_available(np))
|
|
|
|
goto put_node;
|
|
|
|
|
|
|
|
dev_name = kasprintf(GFP_KERNEL, "tegra_clk_%s", hw->init->name);
|
|
|
|
if (!dev_name)
|
|
|
|
goto put_node;
|
|
|
|
|
|
|
|
parent = of_find_device_by_node(tegra_car_np);
|
|
|
|
if (parent) {
|
|
|
|
pdev = of_platform_device_create(np, dev_name, &parent->dev);
|
|
|
|
put_device(&parent->dev);
|
|
|
|
|
|
|
|
if (!pdev) {
|
|
|
|
pr_err("%s: failed to create device for %pOF\n",
|
|
|
|
__func__, np);
|
|
|
|
goto free_name;
|
|
|
|
}
|
|
|
|
|
|
|
|
dev = &pdev->dev;
|
|
|
|
pm_runtime_enable(dev);
|
|
|
|
} else {
|
|
|
|
WARN(1, "failed to find device for %pOF\n", tegra_car_np);
|
|
|
|
}
|
|
|
|
|
|
|
|
free_name:
|
|
|
|
kfree(dev_name);
|
|
|
|
put_node:
|
|
|
|
of_node_put(np);
|
|
|
|
|
|
|
|
return clk_register(dev, hw);
|
|
|
|
}
|
|
|
|
|
2013-03-25 19:22:24 +00:00
|
|
|
tegra_clk_apply_init_table_func tegra_clk_apply_init_table;
|
|
|
|
|
2014-12-16 20:38:27 +00:00
|
|
|
static int __init tegra_clocks_apply_init_table(void)
|
2013-03-25 19:22:24 +00:00
|
|
|
{
|
|
|
|
if (!tegra_clk_apply_init_table)
|
2014-12-16 20:38:27 +00:00
|
|
|
return 0;
|
2013-03-25 19:22:24 +00:00
|
|
|
|
|
|
|
tegra_clk_apply_init_table();
|
2014-12-16 20:38:27 +00:00
|
|
|
|
|
|
|
return 0;
|
2013-03-25 19:22:24 +00:00
|
|
|
}
|
2014-12-16 20:38:27 +00:00
|
|
|
arch_initcall(tegra_clocks_apply_init_table);
|