[U-Boot] [PATCH v4 5/5] kw_spi: add weak functions board_spi_claim/release_bus
Valentin Longchamp
valentin.longchamp at keymile.com
Fri Jun 1 13:31:03 CEST 2012
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 db4bb0a..f4523a3 100644
--- a/drivers/spi/kirkwood_spi.c
+++ b/drivers/spi/kirkwood_spi.c
@@ -87,6 +87,11 @@ 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)
@@ -118,7 +123,11 @@ int spi_claim_bus(struct spi_slave *slave)
#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)
@@ -126,6 +135,8 @@ void spi_release_bus(struct spi_slave *slave)
#if defined(CONFIG_SYS_KW_SPI_MPP)
kirkwood_mpp_conf(spi_mpp_backup, NULL);
#endif
+
+ board_spi_release_bus(slave);
}
#ifndef CONFIG_SPI_CS_IS_VALID
--
1.7.1
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