mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-20 14:13:16 +00:00
9b4041fa2e
Run `make target/linux/refresh` to align patches with OpenWrt style. Signed-off-by: Daniel Golle <daniel@makrotopia.org>
72 lines
2.8 KiB
Diff
72 lines
2.8 KiB
Diff
From 3e45577e70cbf8fdc5c13033114989794a3797d5 Mon Sep 17 00:00:00 2001
|
|
From: Miquel Raynal <miquel.raynal@bootlin.com>
|
|
Date: Thu, 27 Jan 2022 10:17:56 +0100
|
|
Subject: [PATCH 04/15] spi: spi-mem: Introduce a capability structure
|
|
|
|
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>
|
|
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
|
|
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
|
|
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
|
|
Reviewed-by: Mark Brown <broonie@kernel.org>
|
|
Link: https://lore.kernel.org/linux-mtd/20220127091808.1043392-2-miquel.raynal@bootlin.com
|
|
(cherry picked from commit 4a3cc7fb6e63bcfdedec25364738f1493345bd20)
|
|
---
|
|
include/linux/spi/spi-mem.h | 11 +++++++++++
|
|
include/linux/spi/spi.h | 3 +++
|
|
2 files changed, 14 insertions(+)
|
|
|
|
--- a/include/linux/spi/spi-mem.h
|
|
+++ b/include/linux/spi/spi-mem.h
|
|
@@ -286,6 +286,17 @@ struct spi_controller_mem_ops {
|
|
};
|
|
|
|
/**
|
|
+ * 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
|
|
* @probe: probe a SPI memory. Usually where detection/initialization takes
|
|
--- 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_ancill
|
|
* @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
|
|
@@ -643,6 +645,7 @@ 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;
|