From: Eliav Farber <farbere@amazon.com>
To: <brgl@bgdev.pl>, <robh+dt@kernel.org>, <mark.rutland@arm.com>,
<arnd@arndb.de>, <gregkh@linuxfoundation.org>,
<linux-i2c@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-kernel@vger.kernel.org>
Cc: <farbere@amazon.com>, <talel@amazon.com>, <hhhawa@amazon.com>,
<jonnyc@amazon.com>, <hanochu@amazon.com>, <ronenk@amazon.com>,
<itamark@amazon.com>, <shellykz@amazon.com>, <shorer@amazon.com>,
<amitlavi@amazon.com>, <almogbs@amazon.com>, <dwmw@amazon.co.uk>
Subject: [PATCH 2/2] eeprom: at24: add enable gpio support
Date: Tue, 16 Aug 2022 13:00:02 +0000 [thread overview]
Message-ID: <20220816130002.41450-3-farbere@amazon.com> (raw)
In-Reply-To: <20220816130002.41450-1-farbere@amazon.com>
Add gpio support to enable the eeprom device as part of probe sequence.
Signed-off-by: Eliav Farber <farbere@amazon.com>
---
drivers/misc/eeprom/at24.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c
index dc3537651b80..06535b9e1da5 100644
--- a/drivers/misc/eeprom/at24.c
+++ b/drivers/misc/eeprom/at24.c
@@ -623,6 +623,7 @@ static int at24_probe(struct i2c_client *client)
struct device *dev = &client->dev;
bool i2c_fn_i2c, i2c_fn_block;
unsigned int i, num_addresses;
+ struct gpio_desc *enable_gpio;
struct at24_data *at24;
struct regmap *regmap;
size_t at24_size;
@@ -630,6 +631,10 @@ static int at24_probe(struct i2c_client *client)
u8 test_byte;
int err;
+ enable_gpio = devm_gpiod_get_optional(dev, "enable", GPIOD_OUT_HIGH);
+ if (IS_ERR(enable_gpio))
+ return PTR_ERR(enable_gpio);
+
i2c_fn_i2c = i2c_check_functionality(client->adapter, I2C_FUNC_I2C);
i2c_fn_block = i2c_check_functionality(client->adapter,
I2C_FUNC_SMBUS_WRITE_I2C_BLOCK);
--
2.37.1
prev parent reply other threads:[~2022-08-16 13:02 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-16 13:00 [PATCH 0/2] add enable gpio support for a24 eeprom driver Eliav Farber
2022-08-16 13:00 ` [PATCH 1/2] dt-bindings: at24: new optional property - enable-gpios Eliav Farber
2022-08-18 1:48 ` Rob Herring
2022-08-18 15:59 ` Farber, Eliav
2022-08-16 13:00 ` Eliav Farber [this message]
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=20220816130002.41450-3-farbere@amazon.com \
--to=farbere@amazon.com \
--cc=almogbs@amazon.com \
--cc=amitlavi@amazon.com \
--cc=arnd@arndb.de \
--cc=brgl@bgdev.pl \
--cc=devicetree@vger.kernel.org \
--cc=dwmw@amazon.co.uk \
--cc=gregkh@linuxfoundation.org \
--cc=hanochu@amazon.com \
--cc=hhhawa@amazon.com \
--cc=itamark@amazon.com \
--cc=jonnyc@amazon.com \
--cc=linux-i2c@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=robh+dt@kernel.org \
--cc=ronenk@amazon.com \
--cc=shellykz@amazon.com \
--cc=shorer@amazon.com \
--cc=talel@amazon.com \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).