[U-Boot] [PATCH v1 11/25] spi: kirkwood_spi.c: Compile MPP (pin-mux) only for kirkwood SoC's

Stefan Roese
2014-06-27T09:54:57Z

Compile the pin multiplexing only on Kirkwood platforms. As the
Armada XP doesn't need it.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
---

drivers/spi/kirkwood_spi.c | 10 ++++++++++
1 file changed, 10 insertions(+)

diff --git a/drivers/spi/kirkwood_spi.c b/drivers/spi/kirkwood_spi.c
index 9710f12..ce2ba96 100644
--- a/drivers/spi/kirkwood_spi.c
+++ b/drivers/spi/kirkwood_spi.c
@@ -13,22 +13,28 @@
#include <spi.h>
#include <asm/io.h>
#include <asm/arch/soc.h>
+#ifdef CONFIG_KIRKWOOD
#include <asm/arch/mpp.h>
+#endif
#include <asm/arch-mvebu/spi.h>

static struct kwspi_registers *spireg = (struct kwspi_registers *)KW_SPI_BASE;

+#ifdef CONFIG_KIRKWOOD
static u32 cs_spi_mpp_back[2];
+#endif

struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
unsigned int max_hz, unsigned int mode)
{
struct spi_slave *slave;
u32 data;
+#ifdef CONFIG_KIRKWOOD
static const u32 kwspi_mpp_config[2][2] = {
{ MPP0_SPI_SCn, 0 }, /* if cs == 0 */
{ MPP7_SPI_SCn, 0 } /* if cs != 0 */
};
+#endif

if (!spi_cs_is_valid(bus, cs))
return NULL;
@@ -51,15 +57,19 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
writel(KWSPI_SMEMRDIRQ, &spireg->irq_cause);
writel(KWSPI_IRQMASK, &spireg->irq_mask);

+#ifdef CONFIG_KIRKWOOD
/* program mpp registers to select SPI_CSn */
kirkwood_mpp_conf(kwspi_mpp_config[cs ? 1 : 0], cs_spi_mpp_back);
+#endif

return slave;
}

void spi_free_slave(struct spi_slave *slave)
{
+#ifdef CONFIG_KIRKWOOD
kirkwood_mpp_conf(cs_spi_mpp_back, NULL);
+#endif
free(slave);
}

--
2.0.1