Helper for configuring given CS based on flags.
Signed-off-by: Afzal Mohammed <af...@ti.com>
---
arch/arm/mach-omap2/gpmc.c | 39 ++++++++++++++++++++++++++++++++
arch/arm/plat-omap/include/plat/gpmc.h | 5 ++++
2 files changed, 44 insertions(+)
diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c
index e427ff4..8f596ce 100644
--- a/arch/arm/mach-omap2/gpmc.c
+++ b/arch/arm/mach-omap2/gpmc.c
@@ -972,6 +972,45 @@ static __devinit int gpmc_setup_cs_mem(struct gpmc_cs_data
*cs,
return 0;
}
+static void gpmc_setup_cs_config(unsigned cs, unsigned conf)
+{
+ u32 l = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
+
+ l &= ~(GPMC_CONFIG1_MUXADDDATA |
+ GPMC_CONFIG1_WRITETYPE_SYNC |
+ GPMC_CONFIG1_WRITEMULTIPLE_SUPP |
+ GPMC_CONFIG1_READTYPE_SYNC |
+ GPMC_CONFIG1_READMULTIPLE_SUPP |
+ GPMC_CONFIG1_WRAPBURST_SUPP |
+ GPMC_CONFIG1_DEVICETYPE(~0) |
+ GPMC_CONFIG1_DEVICESIZE(~0) |
+ GPMC_CONFIG1_PAGE_LEN(~0));
+
+ /* device type & size bits are cleared above, implying NOR & 8 bit,
+ * only other options possible are NAND & 16 bit respectively,
+ * configure if user asked for it, else default is already setup
+ * users has been provided with NOR & 8 bit macros, nothing to be
+ * done here as already it has been setup above
+ */
+ l |= conf & GPMC_CONFIG1_DEVICETYPE_NAND;
+ l |= conf & GPMC_CONFIG1_DEVICESIZE_16;
+
+ if (conf & GPMC_CONFIG1_PAGE_LEN_8)
+ l |= GPMC_CONFIG1_PAGE_LEN_8;
+ else if (conf & GPMC_CONFIG1_PAGE_LEN_16)
+ l |= GPMC_CONFIG1_PAGE_LEN_16;
+
+ conf &= (GPMC_CONFIG1_MUXADDDATA |
+ GPMC_CONFIG1_WRITETYPE_SYNC |
+ GPMC_CONFIG1_WRITEMULTIPLE_SUPP |
+ GPMC_CONFIG1_READTYPE_SYNC |
+ GPMC_CONFIG1_READMULTIPLE_SUPP |
+ GPMC_CONFIG1_WRAPBURST_SUPP);
+ l |= conf;
+
+ gpmc_cs_write_reg(cs, GPMC_CS_CONFIG1, l);
+}
+
static __devinit int gpmc_setup_cs_irq(struct gpmc_cs_data *cs,
struct resource *res)
{
diff --git a/arch/arm/plat-omap/include/plat/gpmc.h
b/arch/arm/plat-omap/include/plat/gpmc.h
index 157753ab..7187445 100644
--- a/arch/arm/plat-omap/include/plat/gpmc.h
+++ b/arch/arm/plat-omap/include/plat/gpmc.h
@@ -57,14 +57,19 @@
#define GPMC_CONFIG1_WRITETYPE_SYNC (1 << 27)
#define GPMC_CONFIG1_CLKACTIVATIONTIME(val) ((val & 3) << 25)
#define GPMC_CONFIG1_PAGE_LEN(val) ((val & 3) << 23)
+#define GPMC_CONFIG1_PAGE_LEN_4 GPMC_CONFIG1_PAGE_LEN(0)
+#define GPMC_CONFIG1_PAGE_LEN_8 GPMC_CONFIG1_PAGE_LEN(1)
+#define GPMC_CONFIG1_PAGE_LEN_16 GPMC_CONFIG1_PAGE_LEN(2)
#define GPMC_CONFIG1_WAIT_READ_MON (1 << 22)
#define GPMC_CONFIG1_WAIT_WRITE_MON (1 << 21)
#define GPMC_CONFIG1_WAIT_MON_IIME(val) ((val & 3) << 18)
#define GPMC_CONFIG1_WAIT_PIN_SEL(val) ((val & 3) << 16)
#define GPMC_CONFIG1_DEVICESIZE(val) ((val & 3) << 12)
+#define GPMC_CONFIG1_DEVICESIZE_8 GPMC_CONFIG1_DEVICESIZE(0)
#define GPMC_CONFIG1_DEVICESIZE_16 GPMC_CONFIG1_DEVICESIZE(1)
#define GPMC_CONFIG1_DEVICETYPE(val) ((val & 3) << 10)
#define GPMC_CONFIG1_DEVICETYPE_NOR GPMC_CONFIG1_DEVICETYPE(0)
+#define GPMC_CONFIG1_DEVICETYPE_NAND GPMC_CONFIG1_DEVICETYPE(2)
#define GPMC_CONFIG1_MUXADDDATA (1 << 9)
#define GPMC_CONFIG1_TIME_PARA_GRAN (1 << 4)
#define GPMC_CONFIG1_FCLK_DIV(val) (val & 3)
--
1.7.10.2
--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
