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clk: tegra: Changes for v6.2-rc1

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Implements new ABI flags for certain clocks for which the parent rate
 or clock state cannot be changed.
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Merge tag 'tegra-for-6.2-clk-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into soc/drivers

clk: tegra: Changes for v6.2-rc1

Implements new ABI flags for certain clocks for which the parent rate
or clock state cannot be changed.

* tag 'tegra-for-6.2-clk-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
  clk: tegra: Support BPMP-FW ABI deny flags

Link: https://lore.kernel.org/r/20221121171239.2041835-3-thierry.reding@gmail.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2022-11-22 22:36:04 +01:00
commit 381abc230b
1 changed files with 34 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

37
drivers/clk/tegra/clk-bpmp.c
View File

@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2016-2020 NVIDIA Corporation
* Copyright (C) 2016-2022 NVIDIA Corporation
*/
#include <linux/clk-provider.h>
@ -310,6 +310,23 @@ static const struct clk_ops tegra_bpmp_clk_mux_rate_ops = {
.set_rate = tegra_bpmp_clk_set_rate,
};
static const struct clk_ops tegra_bpmp_clk_mux_read_only_ops = {
.get_parent = tegra_bpmp_clk_get_parent,
.recalc_rate = tegra_bpmp_clk_recalc_rate,
};
static const struct clk_ops tegra_bpmp_clk_read_only_ops = {
.recalc_rate = tegra_bpmp_clk_recalc_rate,
};
static const struct clk_ops tegra_bpmp_clk_gate_mux_read_only_ops = {
.prepare = tegra_bpmp_clk_prepare,
.unprepare = tegra_bpmp_clk_unprepare,
.is_prepared = tegra_bpmp_clk_is_prepared,
.recalc_rate = tegra_bpmp_clk_recalc_rate,
.get_parent = tegra_bpmp_clk_get_parent,
};
static int tegra_bpmp_clk_get_max_id(struct tegra_bpmp *bpmp)
{
struct cmd_clk_get_max_clk_id_response response;
@ -510,8 +527,22 @@ tegra_bpmp_clk_register(struct tegra_bpmp *bpmp,
memset(&init, 0, sizeof(init));
init.name = info->name;
clk->hw.init = &init;
if (info->flags & TEGRA_BPMP_CLK_HAS_MUX) {
if (info->flags & BPMP_CLK_STATE_CHANGE_DENIED) {
if ((info->flags & BPMP_CLK_RATE_PARENT_CHANGE_DENIED) == 0) {
dev_WARN(bpmp->dev,
"Firmware bug! Inconsistent permission bits for clock %s. State and parent/rate changes disabled.",
init.name);
}
if (info->flags & TEGRA_BPMP_CLK_HAS_MUX)
init.ops = &tegra_bpmp_clk_mux_read_only_ops;
else
init.ops = &tegra_bpmp_clk_read_only_ops;
} else if (info->flags & BPMP_CLK_RATE_PARENT_CHANGE_DENIED) {
if (info->flags & TEGRA_BPMP_CLK_HAS_MUX)
init.ops = &tegra_bpmp_clk_gate_mux_read_only_ops;
else
init.ops = &tegra_bpmp_clk_gate_ops;
} else if (info->flags & TEGRA_BPMP_CLK_HAS_MUX) {
if (info->flags & TEGRA_BPMP_CLK_HAS_SET_RATE)
init.ops = &tegra_bpmp_clk_mux_rate_ops;
else