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[U-Boot,v3,5/5] kw_spi: add weak functions board_spi_claim/release_bus

Message ID 1338473876-26278-6-git-send-email-valentin.longchamp@keymile.com
State Accepted
Commit 24934fea0c6248ac33ccf398dd1a86e0b9904eeb
Headers show

Commit Message

Valentin Longchamp May 31, 2012, 2:17 p.m. UTC 
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@keymile.com>
cc: Holger Brunck <holger.brunck@keymile.com>
cc: Prafulla Wadaskar <prafulla@marvell.com>
---
 drivers/spi/kirkwood_spi.c |   13 ++++++++++++-
 1 files changed, 12 insertions(+), 1 deletions(-)
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Patch

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