Permit use of a udevice to talk to SPI flash. Ultimately we would like
to retire the use of 'struct spi_flash' for this purpose, so create the
new API for those who want to move to it.
Signed-off-by: Simon Glass <s...@chromium.org>
---
Changes in v2: None
drivers/mtd/spi/sf-uclass.c | 16 +++++++++++++++
include/spi_flash.h | 47 +++++++++++++++++++++++++++++++++++++++------
2 files changed, 57 insertions(+), 6 deletions(-)
diff --git a/drivers/mtd/spi/sf-uclass.c b/drivers/mtd/spi/sf-uclass.c
index fcf67e0..4b25902 100644
--- a/drivers/mtd/spi/sf-uclass.c
+++ b/drivers/mtd/spi/sf-uclass.c
@@ -11,6 +11,22 @@
#include <dm/device-internal.h>
#include "sf_internal.h"
+int spi_flash_read_dm(struct udevice *dev, u32 offset, size_t len, void *buf)
+{
+ return sf_get_ops(dev)->read(dev, offset, len, buf);
+}
+
+int spi_flash_write_dm(struct udevice *dev, u32 offset, size_t len,
+ const void *buf)
+{
+ return sf_get_ops(dev)->write(dev, offset, len, buf);
+}
+
+int spi_flash_erase_dm(struct udevice *dev, u32 offset, size_t len)
+{
+ return sf_get_ops(dev)->erase(dev, offset, len);
+}
+
/*
* TODO(s...@chromium.org): This is an old-style function. We should remove
* it when all SPI flash drivers use dm
diff --git a/include/spi_flash.h b/include/spi_flash.h
index 5913b39..218283f 100644
--- a/include/spi_flash.h
+++ b/include/spi_flash.h
@@ -118,6 +118,41 @@ struct dm_spi_flash_ops {
#define sf_get_ops(dev) ((struct dm_spi_flash_ops *)(dev)->driver->ops)
#ifdef CONFIG_DM_SPI_FLASH
+/**
+ * spi_flash_read_dm() - Read data from SPI flash
+ *
+ * @dev: SPI flash device
+ * @offset: Offset into device in bytes to read from
+ * @len: Number of bytes to read
+ * @buf: Buffer to put the data that is read
+ * @return 0 if OK, -ve on error
+ */
+int spi_flash_read_dm(struct udevice *dev, u32 offset, size_t len, void *buf);
+
+/**
+ * spi_flash_write_dm() - Write data to SPI flash
+ *
+ * @dev: SPI flash device
+ * @offset: Offset into device in bytes to write to
+ * @len: Number of bytes to write
+ * @buf: Buffer containing bytes to write
+ * @return 0 if OK, -ve on error
+ */
+int spi_flash_write_dm(struct udevice *dev, u32 offset, size_t len,
+ const void *buf);
+
+/**
+ * spi_flash_erase_dm() - Erase blocks of the SPI flash
+ *
+ * Note that @len must be a muiltiple of the flash sector size.
+ *
+ * @dev: SPI flash device
+ * @offset: Offset into device in bytes to start erasing
+ * @len: Number of bytes to erase
+ * @return 0 if OK, -ve on error
+ */
+int spi_flash_erase_dm(struct udevice *dev, u32 offset, size_t len);
+
int spi_flash_probe_bus_cs(unsigned int busnum, unsigned int cs,
unsigned int max_hz, unsigned int spi_mode,
struct udevice **devp);
@@ -132,21 +167,21 @@ void spi_flash_free(struct spi_flash *flash);
int spi_flash_remove(struct udevice *flash);
static inline int spi_flash_read(struct spi_flash *flash, u32 offset,
- size_t len, void *buf)
+ size_t len, void *buf)
{
- return sf_get_ops(flash->dev)->read(flash->dev, offset, len, buf);
+ return spi_flash_read_dm(flash->dev, offset, len, buf);
}
static inline int spi_flash_write(struct spi_flash *flash, u32 offset,
- size_t len, const void *buf)
+ size_t len, const void *buf)
{
- return sf_get_ops(flash->dev)->write(flash->dev, offset, len, buf);
+ return spi_flash_write_dm(flash->dev, offset, len, buf);
}
static inline int spi_flash_erase(struct spi_flash *flash, u32 offset,
- size_t len)
+ size_t len)
{
- return sf_get_ops(flash->dev)->erase(flash->dev, offset, len);
+ return spi_flash_erase_dm(flash->dev, offset, len);
}
struct sandbox_state;
--
2.2.0.rc0.207.ga3a616c
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