[U-Boot] [PATCH v2 4/4] kw_spi: add weak functions board_spi_claim/release_bus

[Valentin Longchamp]

This allows a final, board specific, step in the claim/relase_bus
function for the SPI controller, which may be needed for some hardware
designs.

Signed-off-by: Valentin Longchamp <valentin.longchamp at keymile.com>
cc: Holger Brunck <holger.brunck at keymile.com>
cc: Prafulla Wadaskar <prafulla at marvell.com>
---
 drivers/spi/kirkwood_spi.c |   13 ++++++++++++-
 1 files changed, 12 insertions(+), 1 deletions(-)

diff --git a/drivers/spi/kirkwood_spi.c b/drivers/spi/kirkwood_spi.c
index a3e6b6e..a0da527 100644
--- a/drivers/spi/kirkwood_spi.c
+++ b/drivers/spi/kirkwood_spi.c
@@ -88,6 +88,11 @@ void spi_free_slave(struct spi_slave *slave)
 u32 spi_mpp_backup[4];
 #endif
 
+__attribute__((weak)) int board_spi_claim_bus(struct spi_slave *slave)
+{
+	return 0;
+}
+
 int spi_claim_bus(struct spi_slave *slave)
 {
 #if defined(CONFIG_SYS_KW_SPI_MPP)
@@ -121,7 +126,11 @@ int spi_claim_bus(struct spi_slave *slave)
 	kirkwood_mpp_conf(spi_mpp_config);
 #endif
 
-	return 0;
+	return board_spi_claim_bus(slave);
+}
+
+__attribute__((weak)) void board_spi_release_bus(struct spi_slave *slave)
+{
 }
 
 void spi_release_bus(struct spi_slave *slave)
@@ -129,6 +138,8 @@ void spi_release_bus(struct spi_slave *slave)
 #if defined(CONFIG_SYS_KW_SPI_MPP)
 	kirkwood_mpp_conf(spi_mpp_backup);
 #endif
+
+	board_spi_release_bus(slave);
 }
 
 #ifndef CONFIG_SPI_CS_IS_VALID
-- 
1.7.1