[PATCH 03/10] spi: dw: Add support for client driver memory operations
From: Lars Povlsen <hidden>
Date: 2020-05-13 14:00:54
Also in:
linux-devicetree, linux-spi, lkml
Subsystem:
spi subsystem, the rest · Maintainers:
Mark Brown, Linus Torvalds
This minor change allow dw-spi drivers to register spi_controller_mem_ops memory operations if the platform supports it. Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: Lars Povlsen <redacted> --- drivers/spi/spi-dw.c | 3 +++ drivers/spi/spi-dw.h | 2 ++ 2 files changed, 5 insertions(+)
diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c
index 32997f28fa5bb..d0c611c42421e 100644
--- a/drivers/spi/spi-dw.c
+++ b/drivers/spi/spi-dw.c@@ -527,6 +527,9 @@ int dw_spi_add_host(struct device *dev, struct dw_spi *dws) /* Basic HW init */ spi_hw_init(dev, dws); + /* Memory ops? */ + master->mem_ops = dws->mem_ops; + if (dws->dma_ops && dws->dma_ops->dma_init) { ret = dws->dma_ops->dma_init(dws); if (ret) {
diff --git a/drivers/spi/spi-dw.h b/drivers/spi/spi-dw.h
index ed6e47b3f50da..8ecccbde10a20 100644
--- a/drivers/spi/spi-dw.h
+++ b/drivers/spi/spi-dw.h@@ -3,6 +3,7 @@ #define DW_SPI_HEADER_H #include <linux/io.h> +#include <linux/spi/spi-mem.h> #include <linux/scatterlist.h> /* Register offsets */
@@ -116,6 +117,7 @@ struct dw_spi { u16 bus_num; u16 num_cs; /* supported slave numbers */ void (*set_cs)(struct spi_device *spi, bool enable); + const struct spi_controller_mem_ops *mem_ops; /* Current message transfer state info */ size_t len; --
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