spi: Clean up SPI flash driver interface

RW flag was added to spi_slave structure to get around a requirement on
some AMD flash controllers that need to group together all spi volatile
operations (write/erase). This rw flag is not a property or attribute of
the SPI slave or controller. Thus, instead of saving it in spi_slave
structure, clean up the SPI flash driver interface. This allows
chipsets/mainboards (that require volatile operations to be grouped) to
indicate beginning and end of such grouped operations.

New user APIs are added to allow users to perform probe, read, write,
erase, volatile group begin and end operations. Callbacks defined in
spi_flash structure are expected to be used only by the SPI flash
driver. Any chipset that requires grouping of volatile operations can
select the newly added Kconfig option SPI_FLASH_HAS_VOLATILE_GROUP and
define callbacks for chipset_volatile_group_{begin,end}.

spi_claim_bus/spi_release_bus calls have been removed from the SPI flash
chip drivers which end up calling do_spi_flash_cmd since it already has
required calls for claiming and releasing SPI bus before performing a
read/write operation.

BUG=None
BRANCH=None
TEST=Compiles successfully.

Change-Id: Idfc052e82ec15b6c9fa874cee7a61bd06e923fbf
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/17462
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

4 files changed, 4 insertions, 2 deletions

diff --git a/src/soc/qualcomm/ipq40xx/include/soc/spi.h b/src/soc/qualcomm/ipq40xx/include/soc/spi.h
index 014b333667..1fd6a571ca 100644
--- a/src/soc/qualcomm/ipq40xx/include/soc/spi.h
+++ b/src/soc/qualcomm/ipq40xx/include/soc/spi.h
@@ -32,9 +32,9 @@
 #ifndef _IPQ40XX_SPI_H_
 #define _IPQ40XX_SPI_H_
 
-#include <spi_flash.h>
 #include <soc/iomap.h>
 #include <soc/qup.h>
+#include <spi-generic.h>
 
 #define BLSP0_QUP_REG_BASE		((void *)0x78b5000u)
 #define BLSP1_QUP_REG_BASE		((void *)0x78b6000u)
diff --git a/src/soc/qualcomm/ipq40xx/spi.c b/src/soc/qualcomm/ipq40xx/spi.c
index 8d39f77ae4..dcd00c0065 100644
--- a/src/soc/qualcomm/ipq40xx/spi.c
+++ b/src/soc/qualcomm/ipq40xx/spi.c
@@ -28,6 +28,7 @@
  */
 
 #include <arch/io.h>
+#include <console/console.h>
 #include <delay.h>
 #include <gpio.h>
 #include <soc/iomap.h>
diff --git a/src/soc/qualcomm/ipq806x/include/soc/spi.h b/src/soc/qualcomm/ipq806x/include/soc/spi.h
index 3e623463cc..4f6f055e61 100644
--- a/src/soc/qualcomm/ipq806x/include/soc/spi.h
+++ b/src/soc/qualcomm/ipq806x/include/soc/spi.h
@@ -6,7 +6,7 @@
 #ifndef _IPQ806X_SPI_H_
 #define _IPQ806X_SPI_H_
 
-#include <spi_flash.h>
+#include <spi-generic.h>
 #include <soc/iomap.h>
 
 #define QUP5_BASE	((uint32_t)GSBI_QUP5_BASE)
diff --git a/src/soc/qualcomm/ipq806x/spi.c b/src/soc/qualcomm/ipq806x/spi.c
index 4a353130e1..71a8c29085 100644
--- a/src/soc/qualcomm/ipq806x/spi.c
+++ b/src/soc/qualcomm/ipq806x/spi.c
@@ -3,6 +3,7 @@
  */
 
 #include <arch/io.h>
+#include <console/console.h>
 #include <delay.h>
 #include <gpio.h>
 #include <soc/iomap.h>