From: Vipin KUMAR vipin.kumar@st.com
SMI is the serial memory interface controller provided by ST.
Earlier, a driver exists in the u-boot source code for the SMI IP. However, it was specific to spear platforms. This commit converts the same driver to a more generic driver. As a result, the driver files are renamed to st_smi.c and st_smi.h and moved into drivers/mtd folder for reusability by other platforms using smi controller peripheral.
Signed-off-by: Vipin Kumar vipin.kumar@st.com Signed-off-by: Amit Virdi amit.virdi@st.com --- drivers/mtd/Makefile | 2 +- drivers/mtd/{spr_smi.c => st_smi.c} | 5 +++-- include/configs/spear-common.h | 6 +++--- .../spr_smi.h => include/linux/mtd/st_smi.h | 6 ++++-- 4 files changed, 11 insertions(+), 8 deletions(-) rename drivers/mtd/{spr_smi.c => st_smi.c} (99%) rename arch/arm/include/asm/arch-spear/spr_smi.h => include/linux/mtd/st_smi.h (98%)
diff --git a/drivers/mtd/Makefile b/drivers/mtd/Makefile index 5a5ecdf..543c845 100644 --- a/drivers/mtd/Makefile +++ b/drivers/mtd/Makefile @@ -35,7 +35,7 @@ COBJS-$(CONFIG_HAS_DATAFLASH) += dataflash.o COBJS-$(CONFIG_FTSMC020) += ftsmc020.o COBJS-$(CONFIG_FLASH_CFI_LEGACY) += jedec_flash.o COBJS-$(CONFIG_MW_EEPROM) += mw_eeprom.o -COBJS-$(CONFIG_SPEARSMI) += spr_smi.o +COBJS-$(CONFIG_ST_SMI) += st_smi.o
COBJS := $(COBJS-y) SRCS := $(COBJS:.o=.c) diff --git a/drivers/mtd/spr_smi.c b/drivers/mtd/st_smi.c similarity index 99% rename from drivers/mtd/spr_smi.c rename to drivers/mtd/st_smi.c index 9a70a19..b514046 100644 --- a/drivers/mtd/spr_smi.c +++ b/drivers/mtd/st_smi.c @@ -24,10 +24,10 @@ #include <common.h> #include <flash.h> #include <linux/err.h> +#include <linux/mtd/st_smi.h>
#include <asm/io.h> #include <asm/arch/hardware.h> -#include <asm/arch/spr_smi.h>
#if !defined(CONFIG_SYS_NO_FLASH)
@@ -82,6 +82,7 @@ static unsigned int smi_read_id(flash_info_t *info, int banknum) writel(READ_ID, &smicntl->smi_tr); writel((banknum << BANKSEL_SHIFT) | SEND | TX_LEN_1 | RX_LEN_3, &smicntl->smi_cr2); + smi_wait_xfer_finish(XFER_FINISH_TOUT);
value = (readl(&smicntl->smi_rr) & 0x00FFFFFF); @@ -232,7 +233,7 @@ static int smi_write_enable(int bank) * * SMI initialization routine. Sets SMI control register1. */ -static void smi_init(void) +void smi_init(void) { /* Setting the fast mode values. SMI working at 166/4 = 41.5 MHz */ writel(HOLD1 | FAST_MODE | BANK_EN | DSEL_TIME | PRESCAL4, diff --git a/include/configs/spear-common.h b/include/configs/spear-common.h index 3947fd5..5a582e8 100644 --- a/include/configs/spear-common.h +++ b/include/configs/spear-common.h @@ -55,10 +55,10 @@ #if defined(CONFIG_FLASH_PNOR) #define CONFIG_SPEAR_EMI #else -#define CONFIG_SPEARSMI +#define CONFIG_ST_SMI #endif
-#if defined(CONFIG_SPEARSMI) +#if defined(CONFIG_ST_SMI)
#define CONFIG_SYS_MAX_FLASH_BANKS 2 #define CONFIG_SYS_FLASH_BASE 0xF8000000 @@ -124,7 +124,7 @@ * U-Boot Environment placing definitions. */ #if defined(CONFIG_ENV_IS_IN_FLASH) -#ifdef CONFIG_SPEARSMI +#ifdef CONFIG_ST_SMI /* * Environment is in serial NOR flash */ diff --git a/arch/arm/include/asm/arch-spear/spr_smi.h b/include/linux/mtd/st_smi.h similarity index 98% rename from arch/arm/include/asm/arch-spear/spr_smi.h rename to include/linux/mtd/st_smi.h index 06df745..b7a78ac 100644 --- a/arch/arm/include/asm/arch-spear/spr_smi.h +++ b/include/linux/mtd/st_smi.h @@ -21,8 +21,8 @@ * MA 02111-1307 USA */
-#ifndef SPR_SMI_H -#define SPR_SMI_H +#ifndef ST_SMI_H +#define ST_SMI_H
/* 0xF800.0000 . 0xFBFF.FFFF 64MB SMI (Serial Flash Mem) */ /* 0xFC00.0000 . 0xFC1F.FFFF 2MB SMI (Serial Flash Reg.) */ @@ -112,4 +112,6 @@ struct flash_dev { #define XFER_FINISH_TOUT 2 /* xfer finish timeout */ #define WMODE_TOUT 2 /* write enable timeout */
+extern void smi_init(void); + #endif