add ax88772C AX88772C_eeprom_tools

hc

2024-05-10 61598093bbdd283a7edc367d900f223070ead8d2

 kernel/drivers/clk/tegra/clk-periph.c
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@@ -1,19 +1,9 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Copyright (c) 2012, NVIDIA CORPORATION.  All rights reserved.
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- *
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- * This program is free software; you can redistribute it and/or modify it
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- * under the terms and conditions of the GNU General Public License,
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- * version 2, as published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope it will be useful, but WITHOUT
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- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
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- * more details.
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- *
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- * You should have received a copy of the GNU General Public License
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- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
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  */
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+#include <linux/clk.h>
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 #include <linux/clk-provider.h>
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 #include <linux/export.h>
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 #include <linux/slab.h>
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@@ -110,6 +100,32 @@
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 	gate_ops->disable(gate_hw);
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 }
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+static void clk_periph_disable_unused(struct clk_hw *hw)
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+{
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+	struct tegra_clk_periph *periph = to_clk_periph(hw);
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+	const struct clk_ops *gate_ops = periph->gate_ops;
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+	struct clk_hw *gate_hw = &periph->gate.hw;
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+
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+	gate_ops->disable_unused(gate_hw);
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+}
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+
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+static void clk_periph_restore_context(struct clk_hw *hw)
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+{
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+	struct tegra_clk_periph *periph = to_clk_periph(hw);
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+	const struct clk_ops *div_ops = periph->div_ops;
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+	struct clk_hw *div_hw = &periph->divider.hw;
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+	int parent_id;
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+
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+	parent_id = clk_hw_get_parent_index(hw);
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+	if (WARN_ON(parent_id < 0))
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+		return;
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+
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+	if (!(periph->gate.flags & TEGRA_PERIPH_NO_DIV))
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+		div_ops->restore_context(div_hw);
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+
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+	clk_periph_set_parent(hw, parent_id);
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+}
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+
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 const struct clk_ops tegra_clk_periph_ops = {
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 	.get_parent = clk_periph_get_parent,
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 	.set_parent = clk_periph_set_parent,
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@@ -119,6 +135,8 @@
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 	.is_enabled = clk_periph_is_enabled,
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 	.enable = clk_periph_enable,
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 	.disable = clk_periph_disable,
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+	.disable_unused = clk_periph_disable_unused,
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+	.restore_context = clk_periph_restore_context,
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 };
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 static const struct clk_ops tegra_clk_periph_nodiv_ops = {
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@@ -127,6 +145,8 @@
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 	.is_enabled = clk_periph_is_enabled,
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 	.enable = clk_periph_enable,
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 	.disable = clk_periph_disable,
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+	.disable_unused = clk_periph_disable_unused,
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+	.restore_context = clk_periph_restore_context,
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 };
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 static const struct clk_ops tegra_clk_periph_no_gate_ops = {
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@@ -135,6 +155,7 @@
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 	.recalc_rate = clk_periph_recalc_rate,
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 	.round_rate = clk_periph_round_rate,
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 	.set_rate = clk_periph_set_rate,
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+	.restore_context = clk_periph_restore_context,
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 };
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 static struct clk *_tegra_clk_register_periph(const char *name,
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@@ -144,7 +165,7 @@
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 			unsigned long flags)
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 {
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 	struct clk *clk;
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-	struct clk_init_data init = {};
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+	struct clk_init_data init;
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 	const struct tegra_clk_periph_regs *bank;
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 	bool div = !(periph->gate.flags & TEGRA_PERIPH_NO_DIV);
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