sf: winbond: Add support for the Winbond W25X40

[karo-tx-uboot.git] / drivers / mtd / spi / spi_flash_internal.h

diff --git a/drivers/mtd/spi/spi_flash_internal.h b/drivers/mtd/spi/spi_flash_internal.h
index 9bc43dd21e17eba88c154f79b464f4b17d81579c..91e036a4e7cb54abb608613ad7c8475f07e8033c 100644 (file)
--- a/drivers/mtd/spi/spi_flash_internal.h
+++ b/drivers/mtd/spi/spi_flash_internal.h
@@ -19,6 +19,14 @@
 #define CMD_READ_ARRAY_FAST            0x0b
 #define CMD_READ_ARRAY_LEGACY          0xe8
 
+#define CMD_PAGE_PROGRAM               0x02
+#define CMD_WRITE_DISABLE              0x04
+#define CMD_READ_STATUS                        0x05
+#define CMD_WRITE_ENABLE               0x06
+
+/* Common status */
+#define STATUS_WIP                     0x01
+
 /* Send a single-byte command to the device and read the response */
 int spi_flash_cmd(struct spi_slave *spi, u8 cmd, void *response, size_t len);
 
@@ -29,6 +37,9 @@ int spi_flash_cmd(struct spi_slave *spi, u8 cmd, void *response, size_t len);
 int spi_flash_cmd_read(struct spi_slave *spi, const u8 *cmd,
                size_t cmd_len, void *data, size_t data_len);
 
+int spi_flash_cmd_read_fast(struct spi_flash *flash, u32 offset,
+               size_t len, void *data);
+
 /*
  * Send a multi-byte command to the device followed by (optional)
  * data. Used for programming the flash array, etc.
@@ -36,6 +47,29 @@ int spi_flash_cmd_read(struct spi_slave *spi, const u8 *cmd,
 int spi_flash_cmd_write(struct spi_slave *spi, const u8 *cmd, size_t cmd_len,
                const void *data, size_t data_len);
 
+/*
+ * Write the requested data out breaking it up into multiple write
+ * commands as needed per the write size.
+ */
+int spi_flash_cmd_write_multi(struct spi_flash *flash, u32 offset,
+               size_t len, const void *buf);
+
+/*
+ * Enable writing on the SPI flash.
+ */
+static inline int spi_flash_cmd_write_enable(struct spi_flash *flash)
+{
+       return spi_flash_cmd(flash->spi, CMD_WRITE_ENABLE, NULL, 0);
+}
+
+/*
+ * Disable writing on the SPI flash.
+ */
+static inline int spi_flash_cmd_write_disable(struct spi_flash *flash)
+{
+       return spi_flash_cmd(flash->spi, CMD_WRITE_DISABLE, NULL, 0);
+}
+
 /*
  * Same as spi_flash_cmd_read() except it also claims/releases the SPI
  * bus. Used as common part of the ->read() operation.
@@ -43,9 +77,24 @@ int spi_flash_cmd_write(struct spi_slave *spi, const u8 *cmd, size_t cmd_len,
 int spi_flash_read_common(struct spi_flash *flash, const u8 *cmd,
                size_t cmd_len, void *data, size_t data_len);
 
+/* Send a command to the device and wait for some bit to clear itself. */
+int spi_flash_cmd_poll_bit(struct spi_flash *flash, unsigned long timeout,
+                          u8 cmd, u8 poll_bit);
+
+/*
+ * Send the read status command to the device and wait for the wip
+ * (write-in-progress) bit to clear itself.
+ */
+int spi_flash_cmd_wait_ready(struct spi_flash *flash, unsigned long timeout);
+
+/* Erase sectors. */
+int spi_flash_cmd_erase(struct spi_flash *flash, u8 erase_cmd,
+                       u32 offset, size_t len);
+
 /* Manufacturer-specific probe functions */
 struct spi_flash *spi_flash_probe_spansion(struct spi_slave *spi, u8 *idcode);
 struct spi_flash *spi_flash_probe_atmel(struct spi_slave *spi, u8 *idcode);
+struct spi_flash *spi_flash_probe_eon(struct spi_slave *spi, u8 *idcode);
 struct spi_flash *spi_flash_probe_macronix(struct spi_slave *spi, u8 *idcode);
 struct spi_flash *spi_flash_probe_sst(struct spi_slave *spi, u8 *idcode);
 struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 *idcode);