arm/rpi: Enable dcache

[karo-tx-uboot.git] / include / spi_flash.h

diff --git a/include/spi_flash.h b/include/spi_flash.h
index 5913b39e268ee30598de449d03447a8205c80dae..3b2d555c77babb1f3b73dc96c464e9c40a509eda 100644 (file)
--- a/include/spi_flash.h
+++ b/include/spi_flash.h
@@ -37,13 +37,15 @@ struct spi_slave;
  * struct spi_flash - SPI flash structure
  *
  * @spi:               SPI slave
+ * @dev:               SPI flash device
+ * @flags:             Indication of spi flash flags
  * @name:              Name of SPI flash
- * @dual_flash:        Indicates dual flash memories - dual stacked, parallel
+ * @dual_flash:                Indicates dual flash memories - dual stacked, parallel
  * @shift:             Flash shift useful in dual parallel
  * @size:              Total flash size
  * @page_size:         Write (page) size
  * @sector_size:       Sector size
- * @erase_size:        Erase size
+ * @erase_size:                Erase size
  * @bank_read_cmd:     Bank read cmd
  * @bank_write_cmd:    Bank write cmd
  * @bank_curr:         Current flash bank
@@ -51,8 +53,8 @@ struct spi_slave;
  * @erase_cmd:         Erase cmd 4K, 32K, 64K
  * @read_cmd:          Read cmd - Array Fast, Extn read and quad read.
  * @write_cmd:         Write cmd - page and quad program.
- * @dummy_byte:        Dummy cycles for read operation.
- * @memory_map:        Address of read-only SPI flash access
+ * @dummy_byte:                Dummy cycles for read operation.
+ * @memory_map:                Address of read-only SPI flash access
  * @read:              Flash read ops: Read len bytes at offset into buf
  *                     Supported cmds: Fast Array Read
  * @write:             Flash write ops: Write len bytes from buf into offset
@@ -62,11 +64,10 @@ struct spi_slave;
  * return 0 - Success, 1 - Failure
  */
 struct spi_flash {
-#ifdef CONFIG_DM_SPI_FLASH
        struct spi_slave *spi;
+#ifdef CONFIG_DM_SPI_FLASH
        struct udevice *dev;
-#else
-       struct spi_slave *spi;
+       u16 flags;
 #endif
        const char *name;
        u8 dual_flash;
@@ -91,13 +92,13 @@ struct spi_flash {
 #ifndef CONFIG_DM_SPI_FLASH
        /*
         * These are not strictly needed for driver model, but keep them here
-        * whilt the transition is in progress.
+        * while the transition is in progress.
         *
         * Normally each driver would provide its own operations, but for
         * SPI flash most chips use the same algorithms. One approach is
         * to create a 'common' SPI flash device which knows how to talk
         * to most devices, and then allow other drivers to be used instead
-        * if requird, perhaps with a way of scanning through the list to
+        * if required, perhaps with a way of scanning through the list to
         * find the driver that matches the device.
         */
        int (*read)(struct spi_flash *flash, u32 offset, size_t len, void *buf);
@@ -118,6 +119,41 @@ 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 +168,21 @@ 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;