am33xx: Use emif_regs struct for storing initialization values

Rather than defining our own structs to note what to use when
programming the EMIF and related re-use the emif_regs struct.

Signed-off-by: Tom Rini <trini@ti.com>

arch/arm/cpu/armv7/am33xx/ddr.c

@@ -42,33 +42,33 @@ static struct ddr_cmdtctrl *ioctrl_reg = {
 /**
  * Configure SDRAM
  */
-void config_sdram(struct sdram_config *cfg)
+void config_sdram(const struct emif_regs *regs)
 {
-	writel(cfg->refresh, &emif_reg->emif_sdram_ref_ctrl);
-	writel(cfg->refresh_sh, &emif_reg->emif_sdram_ref_ctrl_shdw);
-	writel(cfg->sdrcr, &emif_reg->emif_sdram_config);
+	writel(regs->ref_ctrl, &emif_reg->emif_sdram_ref_ctrl);
+	writel(regs->ref_ctrl, &emif_reg->emif_sdram_ref_ctrl_shdw);
+	writel(regs->sdram_config, &emif_reg->emif_sdram_config);
 }
 
 /**
  * Set SDRAM timings
  */
-void set_sdram_timings(struct sdram_timing *t)
+void set_sdram_timings(const struct emif_regs *regs)
 {
-	writel(t->time1, &emif_reg->emif_sdram_tim_1);
-	writel(t->time1_sh, &emif_reg->emif_sdram_tim_1_shdw);
-	writel(t->time2, &emif_reg->emif_sdram_tim_2);
-	writel(t->time2_sh, &emif_reg->emif_sdram_tim_2_shdw);
-	writel(t->time3, &emif_reg->emif_sdram_tim_3);
-	writel(t->time3_sh, &emif_reg->emif_sdram_tim_3_shdw);
+	writel(regs->sdram_tim1, &emif_reg->emif_sdram_tim_1);
+	writel(regs->sdram_tim1, &emif_reg->emif_sdram_tim_1_shdw);
+	writel(regs->sdram_tim2, &emif_reg->emif_sdram_tim_2);
+	writel(regs->sdram_tim2, &emif_reg->emif_sdram_tim_2_shdw);
+	writel(regs->sdram_tim3, &emif_reg->emif_sdram_tim_3);
+	writel(regs->sdram_tim3, &emif_reg->emif_sdram_tim_3_shdw);
 }
 
 /**
  * Configure DDR PHY
  */
-void config_ddr_phy(struct ddr_phy_control *p)
+void config_ddr_phy(const struct emif_regs *regs)
 {
-	writel(p->reg, &emif_reg->emif_ddr_phy_ctrl_1);
-	writel(p->reg_sh, &emif_reg->emif_ddr_phy_ctrl_1_shdw);
+	writel(regs->emif_ddr_phy_ctlr_1, &emif_reg->emif_ddr_phy_ctrl_1);
+	writel(regs->emif_ddr_phy_ctlr_1, &emif_reg->emif_ddr_phy_ctrl_1_shdw);
 }
 
 /**

arch/arm/cpu/armv7/am33xx/emif4.c

@@ -90,6 +90,15 @@ static const struct cmd_control ddr2_cmd_ctrl_data = {
 	.cmd2iclkout = DDR2_INVERT_CLKOUT,
 };
 
+static const struct emif_regs ddr2_emif_reg_data = {
+	.sdram_config = DDR2_EMIF_SDCFG,
+	.ref_ctrl = DDR2_EMIF_SDREF,
+	.sdram_tim1 = DDR2_EMIF_TIM1,
+	.sdram_tim2 = DDR2_EMIF_TIM2,
+	.sdram_tim3 = DDR2_EMIF_TIM3,
+	.emif_ddr_phy_ctlr_1 = DDR2_EMIF_READ_LATENCY,
+};
+
 static void config_vtp(void)
 {
 	writel(readl(&vtpreg->vtp0ctrlreg) | VTP_CTRL_ENABLE,
@@ -105,35 +114,6 @@ static void config_vtp(void)
 		;
 }
 
-static void config_emif_ddr2(void)
-{
-	struct sdram_config cfg;
-	struct sdram_timing tmg;
-	struct ddr_phy_control phyc;
-
-	/* Program EMIF0 CFG Registers */
-	phyc.reg = DDR2_EMIF_READ_LATENCY;
-	phyc.reg_sh = DDR2_EMIF_READ_LATENCY;
-	phyc.reg2 = DDR2_EMIF_READ_LATENCY;
-
-	tmg.time1 = DDR2_EMIF_TIM1;
-	tmg.time1_sh = DDR2_EMIF_TIM1;
-	tmg.time2 = DDR2_EMIF_TIM2;
-	tmg.time2_sh = DDR2_EMIF_TIM2;
-	tmg.time3 = DDR2_EMIF_TIM3;
-	tmg.time3_sh = DDR2_EMIF_TIM3;
-
-	cfg.sdrcr = DDR2_EMIF_SDCFG;
-	cfg.sdrcr2 = DDR2_EMIF_SDCFG;
-	cfg.refresh = DDR2_EMIF_SDREF;
-	cfg.refresh_sh = DDR2_EMIF_SDREF;
-
-	/* Program EMIF instance */
-	config_ddr_phy(&phyc);
-	set_sdram_timings(&tmg);
-	config_sdram(&cfg);
-}
-
 void config_ddr(short ddr_type)
 {
 	struct ddr_ioctrl ioctrl;
@@ -163,7 +143,10 @@ void config_ddr(short ddr_type)
 		/* Set CKE to be controlled by EMIF/DDR PHY */
 		writel(DDR_CKE_CTRL_NORMAL, &ddrctrl->ddrckectrl);
 
-		config_emif_ddr2();
+		/* Program EMIF instance */
+		config_ddr_phy(&ddr2_emif_reg_data);
+		set_sdram_timings(&ddr2_emif_reg_data);
+		config_sdram(&ddr2_emif_reg_data);
 	}
 }
 #endif

arch/arm/include/asm/arch-am33xx/ddr_defs.h

@@ -20,6 +20,7 @@
 #define _DDR_DEFS_H
 
 #include <asm/arch/hardware.h>
+#include <asm/emif.h>
 
 /* AM335X EMIF Register values */
 #define VTP_CTRL_READY		(0x1 << 5)
@@ -48,51 +49,20 @@
 #define DDR2_PHY_RANK0_DELAY	0x1
 #define DDR2_IOCTRL_VALUE	0x18B
 
-/**
- * Encapsulates DDR PHY control and corresponding shadow registers.
- */
-struct ddr_phy_control {
-	unsigned long	reg;
-	unsigned long	reg_sh;
-	unsigned long	reg2;
-};
-
-/**
- * Encapsulates SDRAM timing and corresponding shadow registers.
- */
-struct sdram_timing {
-	unsigned long	time1;
-	unsigned long	time1_sh;
-	unsigned long	time2;
-	unsigned long	time2_sh;
-	unsigned long	time3;
-	unsigned long	time3_sh;
-};
-
-/**
- * Encapsulates SDRAM configuration.
- * (Includes refresh control registers)  */
-struct sdram_config {
-	unsigned long	sdrcr;
-	unsigned long	sdrcr2;
-	unsigned long	refresh;
-	unsigned long	refresh_sh;
-};
-
 /**
  * Configure SDRAM
  */
-void config_sdram(struct sdram_config *cfg);
+void config_sdram(const struct emif_regs *regs);
 
 /**
  * Set SDRAM timings
  */
-void set_sdram_timings(struct sdram_timing *val);
+void set_sdram_timings(const struct emif_regs *regs);
 
 /**
  * Configure DDR PHY
  */
-void config_ddr_phy(struct ddr_phy_control *cfg);
+void config_ddr_phy(const struct emif_regs *regs);
 
 /**
  * This structure represents the DDR registers on AM33XX devices.