From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Richard Weinberger <richard@nod.at>,
Vignesh Raghavendra <vigneshr@ti.com>,
Tudor Ambarus <Tudor.Ambarus@microchip.com>,
Pratyush Yadav <p.yadav@ti.com>, Michael Walle <michael@walle.cc>,
<linux-mtd@lists.infradead.org>, Mark Brown <broonie@kernel.org>,
<linux-spi@vger.kernel.org>
Cc: Julien Su <juliensu@mxic.com.tw>,
Jaime Liao <jaimeliao@mxic.com.tw>,
Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
Boris Brezillon <boris.brezillon@collabora.com>,
Xiangsheng Hou <xiangsheng.hou@mediatek.com>,
Miquel Raynal <miquel.raynal@bootlin.com>
Subject: [PATCH v9 01/13] spi: spi-mem: Introduce a capability structure
Date: Tue, 4 Jan 2022 09:36:19 +0100 [thread overview]
Message-ID: <20220104083631.40776-2-miquel.raynal@bootlin.com> (raw)
In-Reply-To: <20220104083631.40776-1-miquel.raynal@bootlin.com>
Create a spi_controller_mem_caps structure and put it within the
spi_controller structure close to the spi_controller_mem_ops
strucure. So far the only field in this structure is the support for dtr
operations, but soon we will add another parameter.
Also create a helper to parse the capabilities and check if the
requested capability has been set or not.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
include/linux/spi/spi-mem.h | 11 +++++++++++
include/linux/spi/spi.h | 3 +++
2 files changed, 14 insertions(+)
diff --git a/include/linux/spi/spi-mem.h b/include/linux/spi/spi-mem.h
index 85e2ff7b840d..38e5d45c9842 100644
--- a/include/linux/spi/spi-mem.h
+++ b/include/linux/spi/spi-mem.h
@@ -285,6 +285,17 @@ struct spi_controller_mem_ops {
unsigned long timeout_ms);
};
+/**
+ * struct spi_controller_mem_caps - SPI memory controller capabilities
+ * @dtr: Supports DTR operations
+ */
+struct spi_controller_mem_caps {
+ bool dtr;
+};
+
+#define spi_mem_controller_is_capable(ctlr, cap) \
+ ((ctlr)->mem_caps && (ctlr)->mem_caps->cap)
+
/**
* struct spi_mem_driver - SPI memory driver
* @spidrv: inherit from a SPI driver
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index 8371bca13729..7ec6450142e0 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -23,6 +23,7 @@ struct software_node;
struct spi_controller;
struct spi_transfer;
struct spi_controller_mem_ops;
+struct spi_controller_mem_caps;
/*
* INTERFACES between SPI master-side drivers and SPI slave protocol handlers,
@@ -419,6 +420,7 @@ extern struct spi_device *spi_new_ancillary_device(struct spi_device *spi, u8 ch
* @mem_ops: optimized/dedicated operations for interactions with SPI memory.
* This field is optional and should only be implemented if the
* controller has native support for memory like operations.
+ * @mem_caps: controller capabilities for the handling of memory operations.
* @unprepare_message: undo any work done by prepare_message().
* @slave_abort: abort the ongoing transfer request on an SPI slave controller
* @cs_gpios: LEGACY: array of GPIO descs to use as chip select lines; one per
@@ -640,6 +642,7 @@ struct spi_controller {
/* Optimized handlers for SPI memory-like operations. */
const struct spi_controller_mem_ops *mem_ops;
+ const struct spi_controller_mem_caps *mem_caps;
/* gpio chip select */
int *cs_gpios;
--
2.27.0
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
next prev parent reply other threads:[~2022-01-04 8:37 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-04 8:36 [PATCH v9 00/13] External ECC engines & Macronix support Miquel Raynal
2022-01-04 8:36 ` Miquel Raynal [this message]
2022-01-05 5:52 ` [PATCH v9 01/13] spi: spi-mem: Introduce a capability structure Pratyush Yadav
2022-01-26 10:53 ` Miquel Raynal
2022-01-26 16:35 ` Mark Brown
2022-01-26 17:36 ` Miquel Raynal
2022-01-26 17:41 ` Mark Brown
2022-01-27 9:20 ` Miquel Raynal
2022-01-27 9:37 ` Miquel Raynal
2022-01-04 8:36 ` [PATCH v9 02/13] spi: spi-mem: Check the controller extra capabilities Miquel Raynal
2022-01-05 5:53 ` Pratyush Yadav
2022-01-26 10:53 ` Miquel Raynal
2022-01-04 8:36 ` [PATCH v9 03/13] spi: cadence-quadspi: Provide a capability structure Miquel Raynal
2022-01-26 10:53 ` Miquel Raynal
2022-01-04 8:36 ` [PATCH v9 04/13] spi: mxic: " Miquel Raynal
2022-01-26 10:53 ` Miquel Raynal
2022-01-04 8:36 ` [PATCH v9 05/13] spi: spi-mem: Kill the spi_mem_dtr_supports_op() helper Miquel Raynal
2022-01-26 10:53 ` Miquel Raynal
2022-01-04 8:36 ` [PATCH v9 06/13] spi: spi-mem: Add an ecc parameter to the spi_mem_op structure Miquel Raynal
2022-01-04 9:02 ` Boris Brezillon
2022-01-04 9:24 ` Miquel Raynal
2022-01-26 10:53 ` Miquel Raynal
2022-01-04 8:36 ` [PATCH v9 07/13] mtd: spinand: Delay a little bit the dirmap creation Miquel Raynal
2022-01-26 10:53 ` Miquel Raynal
2022-01-04 8:36 ` [PATCH v9 08/13] mtd: spinand: Create direct mapping descriptors for ECC operations Miquel Raynal
2022-01-26 10:52 ` Miquel Raynal
2022-01-04 8:36 ` [PATCH v9 09/13] spi: mxic: Fix the transmit path Miquel Raynal
2022-01-26 10:52 ` Miquel Raynal
2022-01-04 8:36 ` [PATCH v9 10/13] spi: mxic: Create a helper to configure the controller before an operation Miquel Raynal
2022-01-26 10:52 ` Miquel Raynal
2022-01-04 8:36 ` [PATCH v9 11/13] spi: mxic: Create a helper to ease the start of " Miquel Raynal
2022-01-26 10:52 ` Miquel Raynal
2022-01-04 8:36 ` [PATCH v9 12/13] spi: mxic: Add support for direct mapping Miquel Raynal
2022-01-26 10:52 ` Miquel Raynal
2022-01-04 8:36 ` [PATCH v9 13/13] spi: mxic: Add support for pipelined ECC operations Miquel Raynal
2022-01-26 10:52 ` Miquel Raynal
2022-01-04 9:04 ` [PATCH v9 00/13] External ECC engines & Macronix support Boris Brezillon
2022-01-23 16:01 ` Miquel Raynal
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=20220104083631.40776-2-miquel.raynal@bootlin.com \
--to=miquel.raynal@bootlin.com \
--cc=Tudor.Ambarus@microchip.com \
--cc=boris.brezillon@collabora.com \
--cc=broonie@kernel.org \
--cc=jaimeliao@mxic.com.tw \
--cc=juliensu@mxic.com.tw \
--cc=linux-mtd@lists.infradead.org \
--cc=linux-spi@vger.kernel.org \
--cc=michael@walle.cc \
--cc=p.yadav@ti.com \
--cc=richard@nod.at \
--cc=thomas.petazzoni@bootlin.com \
--cc=vigneshr@ti.com \
--cc=xiangsheng.hou@mediatek.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).