[PATCH v6 07/13] ARM: OMAP2+: gpmc: register time setting helper

[Afzal Mohammed <afzal@xxxxxx>]

Helper for setting GPMC timing by taking input as register values.

Signed-off-by: Afzal Mohammed <afzal@xxxxxx>
---
 arch/arm/mach-omap2/gpmc.c |   45 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c
index 8f596ce..1998285 100644
--- a/arch/arm/mach-omap2/gpmc.c
+++ b/arch/arm/mach-omap2/gpmc.c
@@ -1011,6 +1011,51 @@ static void gpmc_setup_cs_config(unsigned cs, unsigned conf)
 	gpmc_cs_write_reg(cs, GPMC_CS_CONFIG1, l);
 }
 
+static inline void gpmc_set_one_timing(int cs, int reg, int start,
+							int end, u32 val)
+{
+	u32 l;
+	unsigned mask;
+
+	mask = (1 << (end - start + 1)) - 1;
+	l = gpmc_cs_read_reg(cs, reg);
+	l &= ~(mask << start);
+	l |= val << start;
+	gpmc_cs_write_reg(cs, reg, l);
+}
+
+static void gpmc_cs_set_register_timings(int cs, const struct gpmc_timings *t)
+{
+	gpmc_set_one_timing(cs, GPMC_CS_CONFIG1, 0, 1, t->sync_clk);
+	gpmc_set_one_timing(cs, GPMC_CS_CONFIG1, 18, 19, t->wait_monitoring);
+	gpmc_set_one_timing(cs, GPMC_CS_CONFIG1, 25, 26, t->clk_activation);
+
+	gpmc_set_one_timing(cs, GPMC_CS_CONFIG2, 0, 3, t->cs_on);
+	gpmc_set_one_timing(cs, GPMC_CS_CONFIG2, 8, 12, t->cs_rd_off);
+	gpmc_set_one_timing(cs, GPMC_CS_CONFIG2, 16, 20, t->cs_wr_off);
+
+	gpmc_set_one_timing(cs, GPMC_CS_CONFIG3, 0, 3, t->adv_on);
+	gpmc_set_one_timing(cs, GPMC_CS_CONFIG3, 8, 12, t->adv_rd_off);
+	gpmc_set_one_timing(cs, GPMC_CS_CONFIG3, 16, 20, t->adv_wr_off);
+
+	gpmc_set_one_timing(cs, GPMC_CS_CONFIG4, 0, 3, t->oe_on);
+	gpmc_set_one_timing(cs, GPMC_CS_CONFIG4, 8, 12, t->oe_off);
+	gpmc_set_one_timing(cs, GPMC_CS_CONFIG4, 16, 19, t->we_on);
+	gpmc_set_one_timing(cs, GPMC_CS_CONFIG4, 24, 28, t->we_off);
+
+	gpmc_set_one_timing(cs, GPMC_CS_CONFIG5, 24, 27, t->page_burst_access);
+	gpmc_set_one_timing(cs, GPMC_CS_CONFIG6, 0, 3, t->bus_turnaround);
+	gpmc_set_one_timing(cs, GPMC_CS_CONFIG6, 8, 11,	t->cycle2cycle_delay);
+
+	if (gpmc_capability & GPMC_HAS_WR_ACCESS)
+		gpmc_set_one_timing(cs, GPMC_CS_CONFIG6, 24, 28, t->wr_access);
+	if (gpmc_capability & GPMC_HAS_WR_DATA_MUX_BUS)
+		gpmc_set_one_timing(cs, GPMC_CS_CONFIG6, 16, 19,
+						t->wr_data_mux_bus);
+
+	gpmc_cs_bool_timings(cs, &t->bool_timings);
+}
+
 static __devinit int gpmc_setup_cs_irq(struct gpmc_cs_data *cs,
 						struct resource *res)
 {
-- 
1.7.10.2

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