From: Dan Scally <djrscally@gmail.com>
To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org,
linux-gpio@vger.kernel.org, linux-i2c@vger.kernel.org,
linux-media@vger.kernel.org, devel@acpica.org, rjw@rjwysocki.net,
lenb@kernel.org, gregkh@linuxfoundation.org,
mika.westerberg@linux.intel.com,
andriy.shevchenko@linux.intel.com, linus.walleij@linaro.org,
bgolaszewski@baylibre.com, wsa@kernel.org, yong.zhi@intel.com,
sakari.ailus@linux.intel.com, bingbu.cao@intel.com,
tian.shu.qiu@intel.com, mchehab@kernel.org,
robert.moore@intel.com, erik.kaneda@intel.com, pmladek@suse.com,
rostedt@goodmis.org, sergey.senozhatsky@gmail.com,
linux@rasmusvillemoes.dk,
kieran.bingham+renesas@ideasonboard.com,
jacopo+renesas@jmondi.org,
laurent.pinchart+renesas@ideasonboard.com,
jorhand@linux.microsoft.com, kitakar@gmail.com,
heikki.krogerus@linux.intel.com
Subject: Re: [PATCH 15/18] i2c: i2c-core-acpi: Add i2c_acpi_dev_name()
Date: Wed, 2 Dec 2020 22:44:36 +0000 [thread overview]
Message-ID: <30414f42-fdf4-c4f3-6a41-3da9f105a7a1@gmail.com> (raw)
In-Reply-To: <20201130171116.GO14465@pendragon.ideasonboard.com>
On 30/11/2020 17:11, Laurent Pinchart wrote:
> Hi Daniel,
>
> Thank you for the patch.
>
> On Mon, Nov 30, 2020 at 01:31:26PM +0000, Daniel Scally wrote:
>> Some places in the kernel allow users to map resources to a device
>> using device name (for example, gpiod_lookup_table). Currently
>> this involves waiting for the i2c_client to have been registered so we
>> can use dev_name(&client->dev). Adding this function means that we can
>> achieve the same thing without having to wait to the i2c device.
>>
>> Signed-off-by: Daniel Scally <djrscally@gmail.com>
>> ---
>> Changes since RFC v3:
>>
>> - Patch introduced
>>
>> drivers/i2c/i2c-core-acpi.c | 14 ++++++++++++++
>> include/linux/i2c.h | 5 +++++
>> 2 files changed, 19 insertions(+)
>>
>> diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c
>> index 37c510d9347a..d3a653eac79e 100644
>> --- a/drivers/i2c/i2c-core-acpi.c
>> +++ b/drivers/i2c/i2c-core-acpi.c
>> @@ -497,6 +497,20 @@ struct i2c_client *i2c_acpi_new_device(struct device *dev, int index,
>> }
>> EXPORT_SYMBOL_GPL(i2c_acpi_new_device);
>>
>> +/**
>> + * i2c_acpi_dev_name - Construct i2c device name for devs sourced from ACPI
>> + * @adev: ACPI device to construct the name for
>> + *
>> + * Prefixes "i2c-" to the ACPI device name, for use in i2c_dev_set_name() and
>> + * also anywhere else in the kernel that needs to refer to an i2c device by
>> + * name but before they have been instantiated.
>
> The documentation should state that the caller must free the return
> value.
Updated to include that - thanks
>> + */
>> +char *i2c_acpi_dev_name(struct acpi_device *adev)
>> +{
>> + return kasprintf(GFP_KERNEL, "i2c-%s", acpi_dev_name(adev));
>> +}
>> +EXPORT_SYMBOL_GPL(i2c_acpi_dev_name);
>> +
>> #ifdef CONFIG_ACPI_I2C_OPREGION
>> static int acpi_gsb_i2c_read_bytes(struct i2c_client *client,
>> u8 cmd, u8 *data, u8 data_len)
>> diff --git a/include/linux/i2c.h b/include/linux/i2c.h
>> index 56622658b215..ab0e505b2ca6 100644
>> --- a/include/linux/i2c.h
>> +++ b/include/linux/i2c.h
>> @@ -995,6 +995,7 @@ bool i2c_acpi_get_i2c_resource(struct acpi_resource *ares,
>> u32 i2c_acpi_find_bus_speed(struct device *dev);
>> struct i2c_client *i2c_acpi_new_device(struct device *dev, int index,
>> struct i2c_board_info *info);
>> +char *i2c_acpi_dev_name(struct acpi_device *adev);
>> struct i2c_adapter *i2c_acpi_find_adapter_by_handle(acpi_handle handle);
>> #else
>> static inline bool i2c_acpi_get_i2c_resource(struct acpi_resource *ares,
>> @@ -1011,6 +1012,10 @@ static inline struct i2c_client *i2c_acpi_new_device(struct device *dev,
>> {
>> return ERR_PTR(-ENODEV);
>> }
>> +static inline char *i2c_acpi_dev_name(struct acpi_device *adev)
>> +{
>> + return NULL;
>> +}
>> static inline struct i2c_adapter *i2c_acpi_find_adapter_by_handle(acpi_handle handle)
>> {
>> return NULL;
>
next prev parent reply other threads:[~2020-12-02 22:45 UTC|newest]
Thread overview: 144+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-30 13:31 [PATCH 00/18] Add functionality to ipu3-cio2 driver allowing software_node connections to sensors on platforms designed for Windows Daniel Scally
2020-11-30 13:31 ` [PATCH 01/18] property: Return true in fwnode_device_is_available for node types that do not implement this operation Daniel Scally
2020-11-30 16:05 ` Laurent Pinchart
2020-11-30 17:21 ` Andy Shevchenko
2020-12-01 3:12 ` Bingbu Cao
2020-12-01 8:46 ` Dan Scally
2020-11-30 13:31 ` [PATCH 02/18] property: Add support for calling fwnode_graph_get_endpoint_by_id() for fwnode->secondary Daniel Scally
2020-11-30 16:08 ` Laurent Pinchart
2020-11-30 17:29 ` Andy Shevchenko
2020-11-30 17:28 ` Laurent Pinchart
2020-11-30 17:53 ` Andy Shevchenko
2020-11-30 18:41 ` Laurent Pinchart
2020-11-30 19:21 ` Andy Shevchenko
2020-12-02 10:13 ` Dan Scally
2020-11-30 13:31 ` [PATCH 03/18] software_node: Fix failure to put() and get() references to children in software_node_get_next_child() Daniel Scally
2020-11-30 16:10 ` Laurent Pinchart
2020-11-30 17:30 ` Andy Shevchenko
2020-11-30 13:31 ` [PATCH 04/18] software_node: Enforce parent before child ordering of nodes array for software_node_register_nodes() Daniel Scally
2020-11-30 16:11 ` Laurent Pinchart
2020-11-30 16:12 ` Laurent Pinchart
2020-11-30 23:10 ` Dan Scally
2020-11-30 17:35 ` Andy Shevchenko
2020-11-30 17:37 ` Andy Shevchenko
2020-11-30 13:31 ` [PATCH 05/18] software_node: Alter software_node_unregister_nodes() to unregister the array in reverse order Daniel Scally
2020-11-30 16:14 ` Laurent Pinchart
2020-11-30 17:45 ` Andy Shevchenko
2020-12-01 23:36 ` Dan Scally
2020-11-30 13:31 ` [PATCH 06/18] software_node: amend software_node_unregister_node_group() to perform unregistration of array in reverse order to be consistent with software_node_unregister_nodes() Daniel Scally
2020-11-30 16:17 ` Laurent Pinchart
2020-11-30 17:47 ` Andy Shevchenko
2020-12-02 10:04 ` Dan Scally
2020-11-30 17:19 ` kernel test robot
2020-12-01 18:18 ` Dan Carpenter
2020-11-30 13:31 ` [PATCH 07/18] software_node: Add support for fwnode_graph*() family of functions Daniel Scally
2020-11-30 16:25 ` Laurent Pinchart
2020-11-30 23:34 ` Dan Scally
2020-11-30 13:31 ` [PATCH 08/18] lib/test_printf.c: Use helper function to unwind array of software_nodes Daniel Scally
2020-11-30 15:54 ` Sergey Senozhatsky
2020-11-30 16:26 ` Laurent Pinchart
2020-11-30 13:31 ` [PATCH 09/18] ipu3-cio2: Add T: entry to MAINTAINERS Daniel Scally
2020-11-30 13:31 ` [PATCH 10/18] ipu3-cio2: Rename ipu3-cio2.c to allow module to be built from multiple source files retaining ipu3-cio2 name Daniel Scally
2020-12-01 6:56 ` Bingbu Cao
2020-12-01 7:07 ` Bingbu Cao
2020-11-30 13:31 ` [PATCH 11/18] media: v4l2-core: v4l2-async: Check possible match in match_fwnode based on sd->fwnode->secondary Daniel Scally
2020-11-30 16:27 ` Laurent Pinchart
2020-11-30 17:55 ` Andy Shevchenko
2020-11-30 13:31 ` [PATCH 12/18] acpi: Add acpi_dev_get_next_match_dev() and macro to iterate through acpi_devices matching a given _HID Daniel Scally
2020-11-30 17:58 ` Andy Shevchenko
2020-11-30 13:31 ` [PATCH 13/18] ipu3-cio2: Add functionality allowing software_node connections to sensors on platforms designed for Windows Daniel Scally
2020-11-30 16:45 ` kernel test robot
2020-11-30 17:09 ` Laurent Pinchart
2020-11-30 18:14 ` Andy Shevchenko
2020-12-01 22:08 ` Dan Scally
2020-12-01 22:11 ` Dan Scally
2020-12-01 22:30 ` Laurent Pinchart
2020-12-01 23:15 ` Dan Scally
2020-12-02 10:38 ` Sakari Ailus
2020-12-02 10:53 ` Dan Scally
2020-12-02 12:02 ` Andy Shevchenko
2020-12-02 22:44 ` Dan Scally
2020-12-02 12:01 ` Andy Shevchenko
2020-11-30 20:27 ` kernel test robot
2020-11-30 20:35 ` Sakari Ailus
2020-12-01 8:13 ` Dan Scally
2020-12-01 15:06 ` Andy Shevchenko
2020-12-15 10:28 ` Daniel Scally
2020-12-15 10:32 ` Daniel Scally
2020-12-15 22:02 ` Sakari Ailus
2020-12-17 14:17 ` Daniel Scally
2020-11-30 13:31 ` [PATCH 14/18] acpi: utils: Add function to fetch dependent acpi_devices Daniel Scally
2020-11-30 18:23 ` Andy Shevchenko
2020-11-30 18:40 ` Laurent Pinchart
2020-11-30 23:54 ` Dan Scally
2020-12-01 15:10 ` Andy Shevchenko
2020-12-01 15:23 ` Dan Scally
2020-11-30 13:31 ` [PATCH 15/18] i2c: i2c-core-acpi: Add i2c_acpi_dev_name() Daniel Scally
2020-11-30 17:11 ` Laurent Pinchart
2020-12-02 22:44 ` Dan Scally [this message]
2020-11-30 13:31 ` [PATCH 16/18] i2c: i2c-core-base: Use the new i2c_acpi_dev_name() in i2c_set_dev_name() Daniel Scally
2020-11-30 17:12 ` Laurent Pinchart
2020-11-30 19:18 ` Andy Shevchenko
2020-12-02 9:35 ` Andy Shevchenko
2020-12-02 9:49 ` Dan Scally
2020-12-01 23:50 ` Dan Scally
2020-11-30 13:31 ` [PATCH 17/18] gpio: gpiolib-acpi: Export acpi_get_gpiod() Daniel Scally
2020-11-30 17:02 ` kernel test robot
2020-11-30 18:04 ` kernel test robot
2020-11-30 19:20 ` Andy Shevchenko
2020-11-30 13:31 ` [PATCH 18/18] ipu3: Add driver for dummy INT3472 ACPI device Daniel Scally
2020-11-30 16:17 ` Jean-Michel Hautbois
2020-11-30 23:20 ` Dan Scally
2020-12-01 18:31 ` Andy Shevchenko
2020-12-01 18:36 ` Laurent Pinchart
2020-12-01 18:51 ` Andy Shevchenko
2020-11-30 16:29 ` Kieran Bingham
2020-11-30 17:21 ` Laurent Pinchart
2020-11-30 20:07 ` Andy Shevchenko
2020-11-30 23:32 ` Laurent Pinchart
2020-12-01 15:55 ` Sakari Ailus
2020-12-01 18:37 ` Laurent Pinchart
2020-12-02 11:09 ` Sakari Ailus
2020-12-02 12:42 ` Laurent Pinchart
2020-12-02 15:08 ` Andy Shevchenko
2020-12-03 12:37 ` Dan Scally
2020-12-03 12:57 ` Andy Shevchenko
2020-12-01 18:49 ` Andy Shevchenko
2020-12-01 20:59 ` Dan Scally
2020-12-02 9:39 ` Andy Shevchenko
2020-12-02 12:35 ` Laurent Pinchart
2020-12-02 15:11 ` Andy Shevchenko
2020-12-03 12:25 ` Dan Scally
2020-12-13 22:48 ` Daniel Scally
2020-12-14 15:33 ` Andy Shevchenko
2020-12-01 8:30 ` Dan Scally
2020-12-01 18:54 ` Andy Shevchenko
2020-12-01 18:55 ` Laurent Pinchart
2020-12-01 19:05 ` Andy Shevchenko
2020-12-01 19:06 ` Laurent Pinchart
2020-12-01 19:21 ` Andy Shevchenko
2020-12-01 20:34 ` Hans de Goede
2020-12-01 20:46 ` Andy Shevchenko
2020-12-02 12:48 ` Laurent Pinchart
2020-12-02 15:15 ` Andy Shevchenko
2020-12-01 21:05 ` Dan Scally
2020-12-02 9:42 ` Andy Shevchenko
2021-01-07 23:55 ` Daniel Scally
2021-01-08 12:17 ` Andy Shevchenko
2021-01-08 23:24 ` Daniel Scally
[not found] ` <CAHp75Vcy878xKUUUDH5ory9uS-Vhhx_W1PZc=S6hsSLYJ0i60w@mail.gmail.com>
2021-01-09 9:58 ` Daniel Scally
2021-01-09 0:18 ` Laurent Pinchart
2021-01-09 0:39 ` Daniel Scally
2020-11-30 20:52 ` Sakari Ailus
2020-11-30 23:06 ` Dan Scally
2020-11-30 23:21 ` Laurent Pinchart
2020-12-01 0:05 ` Dan Scally
2020-12-01 6:44 ` Sakari Ailus
2020-12-01 8:08 ` Dan Scally
2020-12-01 8:09 ` Dan Scally
2020-12-01 12:32 ` Sakari Ailus
2020-12-01 12:40 ` Laurent Pinchart
2020-12-01 12:44 ` Sakari Ailus
2020-12-01 12:48 ` Dan Scally
2020-12-01 19:01 ` Andy Shevchenko
2020-12-01 18:55 ` Andy Shevchenko
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=30414f42-fdf4-c4f3-6a41-3da9f105a7a1@gmail.com \
--to=djrscally@gmail.com \
--cc=andriy.shevchenko@linux.intel.com \
--cc=bgolaszewski@baylibre.com \
--cc=bingbu.cao@intel.com \
--cc=devel@acpica.org \
--cc=erik.kaneda@intel.com \
--cc=gregkh@linuxfoundation.org \
--cc=heikki.krogerus@linux.intel.com \
--cc=jacopo+renesas@jmondi.org \
--cc=jorhand@linux.microsoft.com \
--cc=kieran.bingham+renesas@ideasonboard.com \
--cc=kitakar@gmail.com \
--cc=laurent.pinchart+renesas@ideasonboard.com \
--cc=laurent.pinchart@ideasonboard.com \
--cc=lenb@kernel.org \
--cc=linus.walleij@linaro.org \
--cc=linux-acpi@vger.kernel.org \
--cc=linux-gpio@vger.kernel.org \
--cc=linux-i2c@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-media@vger.kernel.org \
--cc=linux@rasmusvillemoes.dk \
--cc=mchehab@kernel.org \
--cc=mika.westerberg@linux.intel.com \
--cc=pmladek@suse.com \
--cc=rjw@rjwysocki.net \
--cc=robert.moore@intel.com \
--cc=rostedt@goodmis.org \
--cc=sakari.ailus@linux.intel.com \
--cc=sergey.senozhatsky@gmail.com \
--cc=tian.shu.qiu@intel.com \
--cc=wsa@kernel.org \
--cc=yong.zhi@intel.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).