mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-25 16:31:13 +00:00
80 lines
2.8 KiB
Diff
80 lines
2.8 KiB
Diff
From 9e7eb0ea442ecb1c3fe443289e288694f10c5148 Mon Sep 17 00:00:00 2001
|
|
From: Miquel Raynal <miquel.raynal@bootlin.com>
|
|
Date: Thu, 27 Jan 2022 10:18:01 +0100
|
|
Subject: [PATCH 07/15] spi: spi-mem: Add an ecc parameter to the spi_mem_op
|
|
structure
|
|
|
|
Soon the SPI-NAND core will need a way to request a SPI controller to
|
|
enable ECC support for a given operation. This is because of the
|
|
pipelined integration of certain ECC engines, which are directly managed
|
|
by the SPI controller itself.
|
|
|
|
Introduce a spi_mem_op additional field for this purpose: ecc.
|
|
|
|
So far this field is left unset and checked to be false by all
|
|
the SPI controller drivers in their ->supports_op() hook, as they all
|
|
call spi_mem_default_supports_op().
|
|
|
|
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
|
|
Acked-by: Pratyush Yadav <p.yadav@ti.com>
|
|
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
|
|
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
|
|
Link: https://lore.kernel.org/linux-mtd/20220127091808.1043392-7-miquel.raynal@bootlin.com
|
|
(cherry picked from commit a433c2cbd75ab76f277364f44e76f32c7df306e7)
|
|
---
|
|
drivers/spi/spi-mem.c | 5 +++++
|
|
include/linux/spi/spi-mem.h | 4 ++++
|
|
2 files changed, 9 insertions(+)
|
|
|
|
diff --git a/drivers/spi/spi-mem.c b/drivers/spi/spi-mem.c
|
|
index ed966d8129eb..f38ac31961c9 100644
|
|
--- a/drivers/spi/spi-mem.c
|
|
+++ b/drivers/spi/spi-mem.c
|
|
@@ -178,6 +178,11 @@ bool spi_mem_default_supports_op(struct spi_mem *mem,
|
|
return false;
|
|
}
|
|
|
|
+ if (op->data.ecc) {
|
|
+ if (!spi_mem_controller_is_capable(ctlr, ecc))
|
|
+ return false;
|
|
+ }
|
|
+
|
|
return spi_mem_check_buswidth(mem, op);
|
|
}
|
|
EXPORT_SYMBOL_GPL(spi_mem_default_supports_op);
|
|
diff --git a/include/linux/spi/spi-mem.h b/include/linux/spi/spi-mem.h
|
|
index 4a1bfe689872..2ba044d0d5e5 100644
|
|
--- a/include/linux/spi/spi-mem.h
|
|
+++ b/include/linux/spi/spi-mem.h
|
|
@@ -89,6 +89,7 @@ enum spi_mem_data_dir {
|
|
* @dummy.dtr: whether the dummy bytes should be sent in DTR mode or not
|
|
* @data.buswidth: number of IO lanes used to send/receive the data
|
|
* @data.dtr: whether the data should be sent in DTR mode or not
|
|
+ * @data.ecc: whether error correction is required or not
|
|
* @data.dir: direction of the transfer
|
|
* @data.nbytes: number of data bytes to send/receive. Can be zero if the
|
|
* operation does not involve transferring data
|
|
@@ -119,6 +120,7 @@ struct spi_mem_op {
|
|
struct {
|
|
u8 buswidth;
|
|
u8 dtr : 1;
|
|
+ u8 ecc : 1;
|
|
enum spi_mem_data_dir dir;
|
|
unsigned int nbytes;
|
|
union {
|
|
@@ -288,9 +290,11 @@ struct spi_controller_mem_ops {
|
|
/**
|
|
* struct spi_controller_mem_caps - SPI memory controller capabilities
|
|
* @dtr: Supports DTR operations
|
|
+ * @ecc: Supports operations with error correction
|
|
*/
|
|
struct spi_controller_mem_caps {
|
|
bool dtr;
|
|
+ bool ecc;
|
|
};
|
|
|
|
#define spi_mem_controller_is_capable(ctlr, cap) \
|
|
--
|
|
2.35.1
|
|
|