Merge branch 'master' of git://git.denx.de/u-boot-spi

5 files changed, 118 insertions, 111 deletions

diff --git a/include/common.h b/include/common.h
index f1a590a..bed4316 100644
--- a/include/common.h
+++ b/include/common.h
@@ -596,6 +596,12 @@ void ddr_enable_ecc(unsigned int dram_size);
 #endif
 #endif
 
+/*
+ * Return the current value of a monotonically increasing microsecond timer.
+ * Granularity may be larger than 1us if hardware does not support this.
+ */
+ulong timer_get_us(void);
+
 /* $(CPU)/cpu.c */
 static inline int cpumask_next(int cpu, unsigned int mask)
 {
diff --git a/include/configs/dra7xx_evm.h b/include/configs/dra7xx_evm.h
index 7b120de..51e0e80 100644
--- a/include/configs/dra7xx_evm.h
+++ b/include/configs/dra7xx_evm.h
@@ -48,4 +48,23 @@
 #define CONFIG_PHYLIB
 #define CONFIG_PHY_ADDR			2
 
+/* SPI */
+#undef	CONFIG_OMAP3_SPI
+#define CONFIG_TI_QSPI
+#define CONFIG_SPI_FLASH
+#define CONFIG_SPI_FLASH_SPANSION
+#define CONFIG_CMD_SF
+#define CONFIG_CMD_SPI
+#define CONFIG_TI_SPI_MMAP
+#define CONFIG_SF_DEFAULT_SPEED                48000000
+#define CONFIG_DEFAULT_SPI_MODE                SPI_MODE_3
+
+/* SPI SPL */
+#define CONFIG_SPL_SPI_SUPPORT
+#define CONFIG_SPL_SPI_LOAD
+#define CONFIG_SPL_SPI_FLASH_SUPPORT
+#define CONFIG_SPL_SPI_BUS             0
+#define CONFIG_SPL_SPI_CS              0
+#define CONFIG_SYS_SPI_U_BOOT_OFFS     0x20000
+
 #endif /* __CONFIG_DRA7XX_EVM_H */
diff --git a/include/configs/top9000.h b/include/configs/top9000.h
index 65dabde..a6d6928 100644
--- a/include/configs/top9000.h
+++ b/include/configs/top9000.h
@@ -120,7 +120,6 @@
 #define CONFIG_ATMEL_SPI0		/* SPI used for FRAM is SPI0 */
 #define FRAM_SPI_BUS		0
 #define FRAM_CS_NUM		0
-#define CONFIG_SPI_FLASH		/* RAMTRON FRAM on SPI bus */
 #define CONFIG_SPI_FRAM_RAMTRON
 #define CONFIG_SF_DEFAULT_SPEED	1000000	/* be conservative here... */
 #define CONFIG_SF_DEFAULT_MODE	SPI_MODE_0
diff --git a/include/spi.h b/include/spi.h
index c0dab57..5164d43 100644
--- a/include/spi.h
+++ b/include/spi.h
@@ -25,29 +25,33 @@
 #define	SPI_PREAMBLE	0x80			/* Skip preamble bytes */
 
 /* SPI transfer flags */
-#define SPI_XFER_BEGIN	0x01			/* Assert CS before transfer */
-#define SPI_XFER_END	0x02			/* Deassert CS after transfer */
+#define SPI_XFER_BEGIN		0x01	/* Assert CS before transfer */
+#define SPI_XFER_END		0x02	/* Deassert CS after transfer */
+#define SPI_XFER_MMAP		0x08	/* Memory Mapped start */
+#define SPI_XFER_MMAP_END	0x10	/* Memory Mapped End */
 
 /* Header byte that marks the start of the message */
 #define SPI_PREAMBLE_END_BYTE	0xec
 
-/*-----------------------------------------------------------------------
- * Representation of a SPI slave, i.e. what we're communicating with.
+/**
+ * struct spi_slave - Representation of a SPI slave
  *
  * Drivers are expected to extend this with controller-specific data.
  *
- *   bus:	ID of the bus that the slave is attached to.
- *   cs:	ID of the chip select connected to the slave.
- *   max_write_size:	If non-zero, the maximum number of bytes which can
- *		be written at once, excluding command bytes.
+ * @bus:		ID of the bus that the slave is attached to.
+ * @cs:			ID of the chip select connected to the slave.
+ * @max_write_size:	If non-zero, the maximum number of bytes which can
+ *			be written at once, excluding command bytes.
+ * @memory_map:		Address of read-only SPI flash access.
  */
 struct spi_slave {
-	unsigned int	bus;
-	unsigned int	cs;
+	unsigned int bus;
+	unsigned int cs;
 	unsigned int max_write_size;
+	void *memory_map;
 };
 
-/*-----------------------------------------------------------------------
+/**
  * Initialization, must be called once on start up.
  *
  * TODO: I don't think we really need this.
@@ -60,10 +64,10 @@ void spi_init(void);
  * Allocate and zero all fields in the spi slave, and set the bus/chip
  * select. Use the helper macro spi_alloc_slave() to call this.
  *
- * @offset: Offset of struct spi_slave within slave structure
- * @size: Size of slave structure
- * @bus: Bus ID of the slave chip.
- * @cs: Chip select ID of the slave chip on the specified bus.
+ * @offset:	Offset of struct spi_slave within slave structure.
+ * @size:	Size of slave structure.
+ * @bus:	Bus ID of the slave chip.
+ * @cs:		Chip select ID of the slave chip on the specified bus.
  */
 void *spi_do_alloc_slave(int offset, int size, unsigned int bus,
 			 unsigned int cs);
@@ -74,10 +78,10 @@ void *spi_do_alloc_slave(int offset, int size, unsigned int bus,
  * Allocate and zero all fields in the spi slave, and set the bus/chip
  * select.
  *
- * @_struct: Name of structure to allocate (e.g. struct tegra_spi). This
- *	structure must contain a member 'struct spi_slave *slave'.
- * @bus: Bus ID of the slave chip.
- * @cs: Chip select ID of the slave chip on the specified bus.
+ * @_struct:	Name of structure to allocate (e.g. struct tegra_spi).
+ *		This structure must contain a member 'struct spi_slave *slave'.
+ * @bus:	Bus ID of the slave chip.
+ * @cs:		Chip select ID of the slave chip on the specified bus.
  */
 #define spi_alloc_slave(_struct, bus, cs) \
 	spi_do_alloc_slave(offsetof(_struct, slave), \
@@ -89,13 +93,13 @@ void *spi_do_alloc_slave(int offset, int size, unsigned int bus,
  * Allocate and zero all fields in the spi slave, and set the bus/chip
  * select.
  *
- * @bus: Bus ID of the slave chip.
- * @cs: Chip select ID of the slave chip on the specified bus.
+ * @bus:	Bus ID of the slave chip.
+ * @cs:		Chip select ID of the slave chip on the specified bus.
  */
 #define spi_alloc_slave_base(bus, cs) \
 	spi_do_alloc_slave(0, sizeof(struct spi_slave), bus, cs)
 
-/*-----------------------------------------------------------------------
+/**
  * Set up communications parameters for a SPI slave.
  *
  * This must be called once for each slave. Note that this function
@@ -103,10 +107,10 @@ void *spi_do_alloc_slave(int offset, int size, unsigned int bus,
  * contents of spi_slave so that the hardware can be easily
  * initialized later.
  *
- *   bus:     Bus ID of the slave chip.
- *   cs:      Chip select ID of the slave chip on the specified bus.
- *   max_hz:  Maximum SCK rate in Hz.
- *   mode:    Clock polarity, clock phase and other parameters.
+ * @bus:	Bus ID of the slave chip.
+ * @cs:		Chip select ID of the slave chip on the specified bus.
+ * @max_hz:	Maximum SCK rate in Hz.
+ * @mode:	Clock polarity, clock phase and other parameters.
  *
  * Returns: A spi_slave reference that can be used in subsequent SPI
  * calls, or NULL if one or more of the parameters are not supported.
@@ -114,14 +118,14 @@ void *spi_do_alloc_slave(int offset, int size, unsigned int bus,
 struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
 		unsigned int max_hz, unsigned int mode);
 
-/*-----------------------------------------------------------------------
+/**
  * Free any memory associated with a SPI slave.
  *
- *   slave:	The SPI slave
+ * @slave:	The SPI slave
  */
 void spi_free_slave(struct spi_slave *slave);
 
-/*-----------------------------------------------------------------------
+/**
  * Claim the bus and prepare it for communication with a given slave.
  *
  * This must be called before doing any transfers with a SPI slave. It
@@ -130,25 +134,25 @@ void spi_free_slave(struct spi_slave *slave);
  * allowed to claim the same bus for several slaves without releasing
  * the bus in between.
  *
- *   slave:	The SPI slave
+ * @slave:	The SPI slave
  *
  * Returns: 0 if the bus was claimed successfully, or a negative value
  * if it wasn't.
  */
 int spi_claim_bus(struct spi_slave *slave);
 
-/*-----------------------------------------------------------------------
+/**
  * Release the SPI bus
  *
  * This must be called once for every call to spi_claim_bus() after
  * all transfers have finished. It may disable any SPI hardware as
  * appropriate.
  *
- *   slave:	The SPI slave
+ * @slave:	The SPI slave
  */
 void spi_release_bus(struct spi_slave *slave);
 
-/*-----------------------------------------------------------------------
+/**
  * SPI transfer
  *
  * This writes "bitlen" bits out the SPI MOSI port and simultaneously clocks
@@ -161,19 +165,19 @@ void spi_release_bus(struct spi_slave *slave);
  * temporary variables, this is OK).
  *
  * spi_xfer() interface:
- *   slave:	The SPI slave which will be sending/receiving the data.
- *   bitlen:	How many bits to write and read.
- *   dout:	Pointer to a string of bits to send out.  The bits are
+ * @slave:	The SPI slave which will be sending/receiving the data.
+ * @bitlen:	How many bits to write and read.
+ * @dout:	Pointer to a string of bits to send out.  The bits are
  *		held in a byte array and are sent MSB first.
- *   din:	Pointer to a string of bits that will be filled in.
- *   flags:	A bitwise combination of SPI_XFER_* flags.
+ * @din:	Pointer to a string of bits that will be filled in.
+ * @flags:	A bitwise combination of SPI_XFER_* flags.
  *
- *   Returns: 0 on success, not 0 on failure
+ * Returns: 0 on success, not 0 on failure
  */
 int  spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout,
 		void *din, unsigned long flags);
 
-/*-----------------------------------------------------------------------
+/**
  * Determine if a SPI chipselect is valid.
  * This function is provided by the board if the low-level SPI driver
  * needs it to determine if a given chipselect is actually valid.
@@ -183,7 +187,7 @@ int  spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout,
  */
 int  spi_cs_is_valid(unsigned int bus, unsigned int cs);
 
-/*-----------------------------------------------------------------------
+/**
  * Activate a SPI chipselect.
  * This function is provided by the board code when using a driver
  * that can't control its chipselects automatically (e.g.
@@ -192,7 +196,7 @@ int  spi_cs_is_valid(unsigned int bus, unsigned int cs);
  */
 void spi_cs_activate(struct spi_slave *slave);
 
-/*-----------------------------------------------------------------------
+/**
  * Deactivate a SPI chipselect.
  * This function is provided by the board code when using a driver
  * that can't control its chipselects automatically (e.g.
@@ -201,18 +205,18 @@ void spi_cs_activate(struct spi_slave *slave);
  */
 void spi_cs_deactivate(struct spi_slave *slave);
 
-/*-----------------------------------------------------------------------
+/**
  * Set transfer speed.
  * This sets a new speed to be applied for next spi_xfer().
- *   slave:	The SPI slave
- *   hz:	The transfer speed
+ * @slave:	The SPI slave
+ * @hz:		The transfer speed
  */
 void spi_set_speed(struct spi_slave *slave, uint hz);
 
-/*-----------------------------------------------------------------------
+/**
  * Write 8 bits, then read 8 bits.
- *   slave:	The SPI slave we're communicating with
- *   byte:	Byte to be written
+ * @slave:	The SPI slave we're communicating with
+ * @byte:	Byte to be written
  *
  * Returns: The value that was read, or a negative value on error.
  *
diff --git a/include/spi_flash.h b/include/spi_flash.h
index bfc59aa..1ff5af4 100644
--- a/include/spi_flash.h
+++ b/include/spi_flash.h
@@ -1,7 +1,8 @@
 /*
- * Interface to SPI flash
+ * Common SPI flash Interface
  *
  * Copyright (C) 2008 Atmel Corporation
+ * Copyright (C) 2013 Jagannadha Sutradharudu Teki, Xilinx Inc.
  *
  * See file CREDITS for list of people who contributed to this
  * project.
@@ -10,6 +11,7 @@
  * modify it under the terms of the GNU General Public License
  * version 2 as published by the Free Software Foundation. 
  */
+
 #ifndef _SPI_FLASH_H_
 #define _SPI_FLASH_H_
 
@@ -17,75 +19,52 @@
 #include <linux/types.h>
 #include <linux/compiler.h>
 
+/**
+ * struct spi_flash - SPI flash structure
+ *
+ * @spi:		SPI slave
+ * @name:		Name of SPI flash
+ * @size:		Total flash size
+ * @page_size:		Write (page) size
+ * @sector_size:	Sector size
+ * @erase_size:		Erase size
+ * @bank_read_cmd:	Bank read cmd
+ * @bank_write_cmd:	Bank write cmd
+ * @bank_curr:		Current flash bank
+ * @poll_cmd:		Poll cmd - for flash erase/program
+ * @erase_cmd:		Erase cmd 4K, 32K, 64K
+ * @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 offeset
+ *			Supported cmds: Page Program
+ * @erase:		Flash erase ops: Erase len bytes from offset
+ *			Supported cmds: Sector erase 4K, 32K, 64K
+ * return 0 - Sucess, 1 - Failure
+ */
 struct spi_flash {
 	struct spi_slave *spi;
+	const char *name;
 
-	const char	*name;
-
-	/* Total flash size */
-	u32		size;
-	/* Write (page) size */
-	u32		page_size;
-	/* Erase (sector) size */
-	u32		sector_size;
+	u32 size;
+	u32 page_size;
+	u32 sector_size;
+	u32 erase_size;
 #ifdef CONFIG_SPI_FLASH_BAR
-	/* Bank read cmd */
-	u8		bank_read_cmd;
-	/* Bank write cmd */
-	u8		bank_write_cmd;
-	/* Current flash bank */
-	u8		bank_curr;
+	u8 bank_read_cmd;
+	u8 bank_write_cmd;
+	u8 bank_curr;
 #endif
-	/* Poll cmd - for flash erase/program */
-	u8		poll_cmd;
+	u8 poll_cmd;
+	u8 erase_cmd;
 
-	void *memory_map;	/* Address of read-only SPI flash access */
-	int		(*read)(struct spi_flash *flash, u32 offset,
-				size_t len, void *buf);
-	int		(*write)(struct spi_flash *flash, u32 offset,
-				size_t len, const void *buf);
-	int		(*erase)(struct spi_flash *flash, u32 offset,
-				size_t len);
+	void *memory_map;
+	int (*read)(struct spi_flash *flash, u32 offset, size_t len, void *buf);
+	int (*write)(struct spi_flash *flash, u32 offset, size_t len,
+			const void *buf);
+	int (*erase)(struct spi_flash *flash, u32 offset, size_t len);
 };
 
-/**
- * spi_flash_do_alloc - Allocate a new spi flash structure
- *
- * The structure is allocated and cleared with default values for
- * read, write and erase, which the caller can modify. The caller must set
- * up size, page_size and sector_size.
- *
- * Use the helper macro spi_flash_alloc() to call this.
- *
- * @offset: Offset of struct spi_slave within slave structure
- * @size: Size of slave structure
- * @spi: SPI slave
- * @name: Name of SPI flash device
- */
-void *spi_flash_do_alloc(int offset, int size, struct spi_slave *spi,
-			 const char *name);
-
-/**
- * spi_flash_alloc - Allocate a new SPI flash structure
- *
- * @_struct: Name of structure to allocate (e.g. struct ramtron_spi_fram). This
- *	structure must contain a member 'struct spi_flash *flash'.
- * @spi: SPI slave
- * @name: Name of SPI flash device
- */
-#define spi_flash_alloc(_struct, spi, name) \
-	spi_flash_do_alloc(offsetof(_struct, flash), sizeof(_struct), \
-				spi, name)
-
-/**
- * spi_flash_alloc_base - Allocate a new SPI flash structure with no private data
- *
- * @spi: SPI slave
- * @name: Name of SPI flash device
- */
-#define spi_flash_alloc_base(spi, name) \
-	spi_flash_do_alloc(0, sizeof(struct spi_flash), spi, name)
-
 struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
 		unsigned int max_hz, unsigned int spi_mode);
 void spi_flash_free(struct spi_flash *flash);