From: Trent Piepho <tpiepho@impinj.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] rtc: Add read8 and write8 support to isl1208 driver
Date: Thu, 31 May 2018 11:14:44 -0700 [thread overview]
Message-ID: <20180531181444.27415-1-tpiepho@impinj.com> (raw)
This can be used for device register access from board code.
This allows access to capabilities in the RTC chip not abstracted in
U-Boot's RTC class. E.g., device NVRAM or a tamper detection circuit.
Cc: Klaus Goger <klaus.goger@theobroma-systems.com>
Cc: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Cc: Simon Glass <sjg@chromium.org>
Signed-off-by: Trent Piepho <tpiepho@impinj.com>
---
drivers/rtc/isl1208.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/drivers/rtc/isl1208.c b/drivers/rtc/isl1208.c
index 22ac0d2b08..59a60b75b3 100644
--- a/drivers/rtc/isl1208.c
+++ b/drivers/rtc/isl1208.c
@@ -51,6 +51,24 @@
#define RTC_STAT_BIT_BAT 0x02 /* BATTERY BIT */
#define RTC_STAT_BIT_RTCF 0x01 /* REAL TIME CLOCK FAIL BIT */
+/*
+ * Read an RTC register
+ */
+
+static int isl1208_rtc_read8(struct udevice *dev, unsigned int reg)
+{
+ return dm_i2c_reg_read(dev, reg);
+}
+
+/*
+ * Write an RTC register
+ */
+
+static int isl1208_rtc_write8(struct udevice *dev, unsigned int reg, int val)
+{
+ return dm_i2c_reg_write(dev, reg, val);
+}
+
/*
* Get the current time from the RTC
*/
@@ -161,6 +179,8 @@ static const struct rtc_ops isl1208_rtc_ops = {
.get = isl1208_rtc_get,
.set = isl1208_rtc_set,
.reset = isl1208_rtc_reset,
+ .read8 = isl1208_rtc_read8,
+ .write8 = isl1208_rtc_write8,
};
static const struct udevice_id isl1208_rtc_ids[] = {
--
2.14.3
next reply other threads:[~2018-05-31 18:14 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-31 18:14 Trent Piepho [this message]
2018-05-31 18:16 ` [U-Boot] [PATCH] rtc: Add read8 and write8 support to isl1208 driver Dr. Philipp Tomsich
2018-10-11 14:11 ` [U-Boot] " Tom Rini
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20180531181444.27415-1-tpiepho@impinj.com \
--to=tpiepho@impinj.com \
--cc=u-boot@lists.denx.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.