From: Bartosz Golaszewski <brgl@bgdev.pl>
To: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
"David S . Miller" <davem@davemloft.net>,
Mauro Carvalho Chehab <mchehab+samsung@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
Arnd Bergmann <arnd@arndb.de>, Jonathan Corbet <corbet@lwn.net>,
Sekhar Nori <nsekhar@ti.com>, Kevin Hilman <khilman@kernel.org>,
David Lechner <david@lechnology.com>,
Boris Brezillon <boris.brezillon@bootlin.com>,
Andrew Lunn <andrew@lunn.ch>, Alban Bedel <albeu@free.fr>,
Maxime Ripard <maxime.ripard@bootlin.com>,
Chen-Yu Tsai <wens@csie.org>
Cc: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Bartosz Golaszewski <bgolaszewski@baylibre.com>
Subject: [PATCH v4 16/22] Documentation: nvmem: document cell tables and lookup entries
Date: Fri, 14 Sep 2018 16:40:05 +0200 [thread overview]
Message-ID: <20180914144011.27614-17-brgl@bgdev.pl> (raw)
In-Reply-To: <20180914144011.27614-1-brgl@bgdev.pl>
From: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Document the new nvmem kernel APIs.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
---
Documentation/nvmem/nvmem.txt | 31 +++++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/Documentation/nvmem/nvmem.txt b/Documentation/nvmem/nvmem.txt
index 8d8d8f58f96f..fc2fe4b18655 100644
--- a/Documentation/nvmem/nvmem.txt
+++ b/Documentation/nvmem/nvmem.txt
@@ -58,6 +58,37 @@ static int qfprom_probe(struct platform_device *pdev)
It is mandatory that the NVMEM provider has a regmap associated with its
struct device. Failure to do would return error code from nvmem_register().
+Users of board files can define and register nvmem cells using the
+nvmem_cell_table struct:
+
+static struct nvmem_cell_info foo_nvmem_cells[] = {
+ {
+ .name = "macaddr",
+ .offset = 0x7f00,
+ .bytes = ETH_ALEN,
+ }
+};
+
+static struct nvmem_cell_table foo_nvmem_cell_table = {
+ .nvmem_name = "i2c-eeprom",
+ .cells = foo_nvmem_cells,
+ .ncells = ARRAY_SIZE(foo_nvmem_cells),
+};
+
+nvmem_add_cell_table(&foo_nvmem_cell_table);
+
+Additionally it is possible to create nvmem cell lookup entries and register
+them with the nvmem framework from machine code as shown in the example below:
+
+static struct nvmem_cell_lookup foo_nvmem_lookup = {
+ .nvmem_name = "i2c-eeprom",
+ .cell_name = "macaddr",
+ .dev_id = "foo_mac.0",
+ .con_id = "mac-address",
+};
+
+nvmem_add_cell_lookups(&foo_nvmem_lookup, 1);
+
NVMEM Consumers
+++++++++++++++
--
2.18.0
next prev parent reply other threads:[~2018-09-14 14:41 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-14 14:39 [PATCH v4 00/22] nvmem: rework of the subsystem for non-DT users Bartosz Golaszewski
2018-09-14 14:39 ` [PATCH v4 01/22] nvmem: provide nvmem_dev_name() Bartosz Golaszewski
2018-09-14 14:39 ` [PATCH v4 02/22] nvmem: remove the name field from struct nvmem_device Bartosz Golaszewski
2018-09-14 14:39 ` [PATCH v4 03/22] nvmem: use list_for_each_entry_safe in nvmem_device_remove_all_cells() Bartosz Golaszewski
2018-09-14 14:39 ` [PATCH v4 04/22] nvmem: remove a stray newline Bartosz Golaszewski
2018-09-14 14:39 ` [PATCH v4 05/22] nvmem: check the return value of nvmem_add_cells() Bartosz Golaszewski
2018-09-14 14:39 ` [PATCH v4 06/22] nvmem: use kref Bartosz Golaszewski
2018-09-14 14:39 ` [PATCH v4 07/22] nvmem: sunxi_sid: return -ENOMEM if kzalloc() fails Bartosz Golaszewski
2018-09-14 14:39 ` [PATCH v4 08/22] nvmem: sunxi_sid: use devm_nvmem_register() Bartosz Golaszewski
2018-09-14 14:39 ` [PATCH v4 09/22] nvmem: lpc18xx_eeprom: " Bartosz Golaszewski
2018-09-14 14:39 ` [PATCH v4 10/22] nvmem: mxs-ocotp: " Bartosz Golaszewski
2018-09-14 14:40 ` [PATCH v4 11/22] nvmem: change the signature of nvmem_unregister() Bartosz Golaszewski
2018-09-14 14:40 ` [PATCH v4 12/22] nvmem: remove the global cell list Bartosz Golaszewski
2018-09-14 14:40 ` [PATCH v4 13/22] nvmem: add support for cell info Bartosz Golaszewski
2018-09-14 14:40 ` [PATCH v4 14/22] nvmem: resolve cells from DT at registration time Bartosz Golaszewski
2018-09-14 14:40 ` [PATCH v4 15/22] nvmem: add support for cell lookups from machine code Bartosz Golaszewski
2018-09-21 1:12 ` Srinivas Kandagatla
2018-09-14 14:40 ` Bartosz Golaszewski [this message]
2018-09-14 14:40 ` [PATCH v4 17/22] nvmem: add a notifier chain Bartosz Golaszewski
2018-09-14 14:40 ` [PATCH v4 18/22] nvmem: use SPDX license identifiers Bartosz Golaszewski
2018-09-14 14:40 ` [PATCH v4 19/22] nvmem: make the naming of arguments in nvmem_cell_get() consistent Bartosz Golaszewski
2018-09-14 14:40 ` [PATCH v4 20/22] nvmem: use EOPNOTSUPP instead of ENOSYS Bartosz Golaszewski
2018-09-14 14:40 ` [PATCH v4 21/22] nvmem: fix commenting style Bartosz Golaszewski
2018-09-14 14:40 ` [PATCH v4 22/22] nvmem: use octal permissions instead of constants Bartosz Golaszewski
2018-09-16 14:08 ` [PATCH v4 00/22] nvmem: rework of the subsystem for non-DT users Srinivas Kandagatla
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=20180914144011.27614-17-brgl@bgdev.pl \
--to=brgl@bgdev.pl \
--cc=akpm@linux-foundation.org \
--cc=albeu@free.fr \
--cc=andrew@lunn.ch \
--cc=arnd@arndb.de \
--cc=bgolaszewski@baylibre.com \
--cc=boris.brezillon@bootlin.com \
--cc=corbet@lwn.net \
--cc=davem@davemloft.net \
--cc=david@lechnology.com \
--cc=gregkh@linuxfoundation.org \
--cc=khilman@kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-doc@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=maxime.ripard@bootlin.com \
--cc=mchehab+samsung@kernel.org \
--cc=nsekhar@ti.com \
--cc=srinivas.kandagatla@linaro.org \
--cc=wens@csie.org \
/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).