arm/km: use spi claim bus to switch between SPI and NAND

We overwrite these weak functions from the kirkwood spi code to
use our own method to be able to switch between the SPI NOR and
the NAND flash. This is needed e.g. to update the u-boot. The former
command do_spi_toggle can therefore be removed. And the usage of
this command is removed from the u-boot update command in the
u-boot environment.

Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>
Signed-off-by: Prafulla Wadaskar <prafulla@marvell.com>
cc: Holger Brunck <holger.brunck@keymile.com>
cc: Prafulla Wadaskar <prafulla@marvell.com>

1 files changed, 7 insertions, 37 deletions

diff --git a/board/keymile/km_arm/km_arm.c b/board/keymile/km_arm/km_arm.c
index ed12b5c..cb3402b 100644
--- a/board/keymile/km_arm/km_arm.c
+++ b/board/keymile/km_arm/km_arm.c
@@ -33,6 +33,7 @@
 #include <nand.h>
 #include <netdev.h>
 #include <miiphy.h>
+#include <spi.h>
 #include <asm/io.h>
 #include <asm/arch/cpu.h>
 #include <asm/arch/kirkwood.h>
@@ -284,48 +285,17 @@ int board_init(void)
 	return 0;
 }
 
-#if defined(CONFIG_CMD_SF)
-int do_spi_toggle(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+int board_spi_claim_bus(struct spi_slave *slave)
 {
-	u32 tmp;
-	if (argc < 2)
-		return cmd_usage(cmdtp);
-
-	if ((strcmp(argv[1], "off") == 0)) {
-		printf("SPI FLASH disabled, NAND enabled\n");
-		/* Multi-Purpose Pins Functionality configuration */
-		kwmpp_config[0] = MPP0_NF_IO2;
-		kwmpp_config[1] = MPP1_NF_IO3;
-		kwmpp_config[2] = MPP2_NF_IO4;
-		kwmpp_config[3] = MPP3_NF_IO5;
-
-		kirkwood_mpp_conf(kwmpp_config, NULL);
-		tmp = readl(KW_GPIO0_BASE);
-		writel(tmp | FLASH_GPIO_PIN , KW_GPIO0_BASE);
-	} else if ((strcmp(argv[1], "on") == 0)) {
-		printf("SPI FLASH enabled, NAND disabled\n");
-		/* Multi-Purpose Pins Functionality configuration */
-		kwmpp_config[0] = MPP0_SPI_SCn;
-		kwmpp_config[1] = MPP1_SPI_MOSI;
-		kwmpp_config[2] = MPP2_SPI_SCK;
-		kwmpp_config[3] = MPP3_SPI_MISO;
-
-		kirkwood_mpp_conf(kwmpp_config, NULL);
-		tmp = readl(KW_GPIO0_BASE);
-		writel(tmp & (~FLASH_GPIO_PIN) , KW_GPIO0_BASE);
-	} else {
-		return cmd_usage(cmdtp);
-	}
+	kw_gpio_set_value(KM_FLASH_GPIO_PIN, 0);
 
 	return 0;
 }
 
-U_BOOT_CMD(
-	spitoggle,	2,	0,	do_spi_toggle,
-	"En-/disable SPI FLASH access",
-	"<on|off> - Enable (on) or disable (off) SPI FLASH access\n"
-	);
-#endif
+void board_spi_release_bus(struct spi_slave *slave)
+{
+	kw_gpio_set_value(KM_FLASH_GPIO_PIN, 1);
+}
 
 int dram_init(void)
 {