From: Leonard Crestez <leonard.crestez@nxp.com> To: Stephen Boyd <sboyd@kernel.org> Cc: Michael Turquette <mturquette@baylibre.com>, Peter De Schrijver <pdeschrijver@nvidia.com>, Geert Uytterhoeven <geert+renesas@glider.be>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, "Rafael J. Wysocki" <rafael@kernel.org>, "linux-clk@vger.kernel.org" <linux-clk@vger.kernel.org>, "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org> Subject: [PATCH] clk: Add clk_parent entry in debugfs Date: Fri, 24 May 2019 08:25:25 +0000 [thread overview] Message-ID: <057720844e78e615e46de34a73b16ffaf7dbfc10.1558686047.git.leonard.crestez@nxp.com> (raw) This allows to easily determine the parent in shell scripts without parsing more complex files. Add the clk_parent file unconditionally because this information is useful for more than just muxes. Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com> --- drivers/clk/clk.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index aa51756fd4d6..94a93b07dd37 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -3009,10 +3009,21 @@ static int possible_parents_show(struct seq_file *s, void *data) return 0; } DEFINE_SHOW_ATTRIBUTE(possible_parents); +static int current_parent_show(struct seq_file *s, void *data) +{ + struct clk_core *core = s->private; + + if (core->parent) + seq_printf(s, "%s\n", core->parent->name); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(current_parent); + static int clk_duty_cycle_show(struct seq_file *s, void *data) { struct clk_core *core = s->private; struct clk_duty *duty = &core->duty; @@ -3040,10 +3051,11 @@ static void clk_debug_create_one(struct clk_core *core, struct dentry *pdentry) debugfs_create_u32("clk_enable_count", 0444, root, &core->enable_count); debugfs_create_u32("clk_protect_count", 0444, root, &core->protect_count); debugfs_create_u32("clk_notifier_count", 0444, root, &core->notifier_count); debugfs_create_file("clk_duty_cycle", 0444, root, core, &clk_duty_cycle_fops); + debugfs_create_file("clk_parent", 0444, root, core, ¤t_parent_fops); if (core->num_parents > 1) debugfs_create_file("clk_possible_parents", 0444, root, core, &possible_parents_fops); -- 2.17.1
WARNING: multiple messages have this Message-ID (diff)
From: Leonard Crestez <leonard.crestez@nxp.com> To: Stephen Boyd <sboyd@kernel.org> Cc: Peter De Schrijver <pdeschrijver@nvidia.com>, Geert Uytterhoeven <geert+renesas@glider.be>, "Rafael J. Wysocki" <rafael@kernel.org>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Michael Turquette <mturquette@baylibre.com>, "linux-clk@vger.kernel.org" <linux-clk@vger.kernel.org>, "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org> Subject: [PATCH] clk: Add clk_parent entry in debugfs Date: Fri, 24 May 2019 08:25:25 +0000 [thread overview] Message-ID: <057720844e78e615e46de34a73b16ffaf7dbfc10.1558686047.git.leonard.crestez@nxp.com> (raw) This allows to easily determine the parent in shell scripts without parsing more complex files. Add the clk_parent file unconditionally because this information is useful for more than just muxes. Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com> --- drivers/clk/clk.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index aa51756fd4d6..94a93b07dd37 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -3009,10 +3009,21 @@ static int possible_parents_show(struct seq_file *s, void *data) return 0; } DEFINE_SHOW_ATTRIBUTE(possible_parents); +static int current_parent_show(struct seq_file *s, void *data) +{ + struct clk_core *core = s->private; + + if (core->parent) + seq_printf(s, "%s\n", core->parent->name); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(current_parent); + static int clk_duty_cycle_show(struct seq_file *s, void *data) { struct clk_core *core = s->private; struct clk_duty *duty = &core->duty; @@ -3040,10 +3051,11 @@ static void clk_debug_create_one(struct clk_core *core, struct dentry *pdentry) debugfs_create_u32("clk_enable_count", 0444, root, &core->enable_count); debugfs_create_u32("clk_protect_count", 0444, root, &core->protect_count); debugfs_create_u32("clk_notifier_count", 0444, root, &core->notifier_count); debugfs_create_file("clk_duty_cycle", 0444, root, core, &clk_duty_cycle_fops); + debugfs_create_file("clk_parent", 0444, root, core, ¤t_parent_fops); if (core->num_parents > 1) debugfs_create_file("clk_possible_parents", 0444, root, core, &possible_parents_fops); -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2019-05-24 8:25 UTC|newest] Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-05-24 8:25 Leonard Crestez [this message] 2019-05-24 8:25 ` [PATCH] clk: Add clk_parent entry in debugfs Leonard Crestez 2019-06-07 19:05 ` Stephen Boyd 2019-06-07 19:05 ` Stephen Boyd 2019-06-08 7:26 ` Leonard Crestez 2019-06-08 7:26 ` Leonard Crestez 2019-06-08 12:19 ` Geert Uytterhoeven 2019-06-08 12:19 ` Geert Uytterhoeven 2019-06-08 12:48 ` Leonard Crestez 2019-06-08 12:48 ` Leonard Crestez
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