lkml.org 
[lkml]   [2021]   [Dec]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH] clk: si5341: Add sysfs property to check selected input
Add a sysfs property to check the selected input.
<input_num> <input_name> <input_name_from_DTB>
E.g.:
cat input_selected
0 in0 WR25M

Signed-off-by: Adam Wujek <dev_public@wujek.eu>
---
drivers/clk/clk-si5341.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)

diff --git a/drivers/clk/clk-si5341.c b/drivers/clk/clk-si5341.c
index 57ae183982d8..b7641abe6747 100644
--- a/drivers/clk/clk-si5341.c
+++ b/drivers/clk/clk-si5341.c
@@ -1536,12 +1536,31 @@ static ssize_t clear_sticky_store(struct device *dev,
}
static DEVICE_ATTR_WO(clear_sticky);

+static ssize_t input_selected_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct clk_si5341 *data = dev_get_drvdata(dev);
+ int res = si5341_clk_get_selected_input(data);
+ const char *input_name_dtb;
+
+ if (res < 0)
+ return res;
+ input_name_dtb = __clk_get_name(devm_clk_get(dev,
+ si5341_input_clock_names[res]));
+ /* input id, input name, input name from DTB */
+ return snprintf(buf, PAGE_SIZE, "%d %s %s\n", res,
+ si5341_input_clock_names[res], input_name_dtb);
+}
+static DEVICE_ATTR_RO(input_selected);
+
static const struct attribute *si5341_attributes[] = {
&dev_attr_input_present.attr,
&dev_attr_input_present_sticky.attr,
&dev_attr_pll_locked.attr,
&dev_attr_pll_locked_sticky.attr,
&dev_attr_clear_sticky.attr,
+ &dev_attr_input_selected.attr,
NULL
};

--
2.17.1

\
 
 \ /
  Last update: 2021-12-03 15:16    [W:0.061 / U:0.032 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site