X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=drivers%2Fspi%2Fkirkwood_spi.c;h=caa91e3e81718c8c4626fbb819a121f14e28e3e8;hb=277f037074fbb73be10a7bff27079b6eb0a3bfbb;hp=db4bb0ae6151b23c95b56a43a7d0b1c7c6e74067;hpb=ac486e3ba16c37514d135c359f61ed6e32a2921d;p=u-boot

diff --git a/drivers/spi/kirkwood_spi.c b/drivers/spi/kirkwood_spi.c
index db4bb0ae61..caa91e3e81 100644
--- a/drivers/spi/kirkwood_spi.c
+++ b/drivers/spi/kirkwood_spi.c
@@ -41,23 +41,24 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
 {
 	struct spi_slave *slave;
 	u32 data;
-	u32 kwspi_mpp_config[] = { 0, 0 };
+	static const u32 kwspi_mpp_config[2][2] = {
+		{ MPP0_SPI_SCn, 0 }, /* if cs == 0 */
+		{ MPP7_SPI_SCn, 0 } /* if cs != 0 */
+	};
 
 	if (!spi_cs_is_valid(bus, cs))
 		return NULL;
 
-	slave = malloc(sizeof(struct spi_slave));
+	slave = spi_alloc_slave_base(bus, cs);
 	if (!slave)
 		return NULL;
 
-	slave->bus = bus;
-	slave->cs = cs;
-
 	writel(~KWSPI_CSN_ACT | KWSPI_SMEMRDY, &spireg->ctrl);
 
 	/* calculate spi clock prescaller using max_hz */
-	data = ((CONFIG_SYS_TCLK / 2) / max_hz) & KWSPI_CLKPRESCL_MASK;
-	data |= 0x10;
+	data = ((CONFIG_SYS_TCLK / 2) / max_hz) + 0x10;
+	data = data < KWSPI_CLKPRESCL_MIN ? KWSPI_CLKPRESCL_MIN : data;
+	data = data > KWSPI_CLKPRESCL_MASK ? KWSPI_CLKPRESCL_MASK : data;
 
 	/* program spi clock prescaller using max_hz */
 	writel(KWSPI_ADRLEN_3BYTE | data, &spireg->cfg);
@@ -67,12 +68,7 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
 	writel(KWSPI_IRQMASK, &spireg->irq_mask);
 
 	/* program mpp registers to select  SPI_CSn */
-	if (cs) {
-		kwspi_mpp_config[0] = MPP7_SPI_SCn;
-	} else {
-		kwspi_mpp_config[0] = MPP0_SPI_SCn;
-	}
-	kirkwood_mpp_conf(kwspi_mpp_config, cs_spi_mpp_back);
+	kirkwood_mpp_conf(kwspi_mpp_config[cs ? 1 : 0], cs_spi_mpp_back);
 
 	return slave;
 }
@@ -87,6 +83,11 @@ 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 +119,11 @@ 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 +131,8 @@ 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