ARM: OMAP: Introduce omap_globals and prcm access functions for multi-omap

New struct omap_globals contains the omap processor specific
module bases. Use omap_globals to set the various base addresses
to make detecting omap chip type simpler.

Also introduce OMAP1_IO_ADDRESS and OMAP2_IO_ADDRESS for future multi-omap
patches.

Signed-off-by: Tony Lindgren <tony@atomide.com>

8 files changed, 131 insertions, 55 deletions

diff --git a/arch/arm/mach-omap2/cm.h b/arch/arm/mach-omap2/cm.h
index 8489f3029fed..e2d404e69454 100644
--- a/arch/arm/mach-omap2/cm.h
+++ b/arch/arm/mach-omap2/cm.h
@@ -96,15 +96,10 @@
 /* Clock management domain register get/set */
 
 #ifndef __ASSEMBLER__
-static inline void cm_write_mod_reg(u32 val, s16 module, s16 idx)
-{
-	__raw_writel(val, OMAP_CM_REGADDR(module, idx));
-}
-
-static inline u32 cm_read_mod_reg(s16 module, s16 idx)
-{
-	return __raw_readl(OMAP_CM_REGADDR(module, idx));
-}
+
+extern u32 cm_read_mod_reg(s16 module, u16 idx);
+extern void cm_write_mod_reg(u32 val, s16 module, u16 idx);
+
 #endif
 
 /* CM register bits shared between 24XX and 3430 */
diff --git a/arch/arm/mach-omap2/control.c b/arch/arm/mach-omap2/control.c
index a5d86a49c213..51f70300996f 100644
--- a/arch/arm/mach-omap2/control.c
+++ b/arch/arm/mach-omap2/control.c
@@ -13,22 +13,21 @@
 #undef DEBUG
 
 #include <linux/kernel.h>
+#include <linux/io.h>
 
-#include <asm/io.h>
-
+#include <asm/arch/common.h>
 #include <asm/arch/control.h>
 
-static u32 omap2_ctrl_base;
+static void __iomem *omap2_ctrl_base;
 
-#define OMAP_CTRL_REGADDR(reg)	(void __iomem *)IO_ADDRESS(omap2_ctrl_base \
-								+ (reg))
+#define OMAP_CTRL_REGADDR(reg)		(omap2_ctrl_base + (reg))
 
-void omap_ctrl_base_set(u32 base)
+void __init omap2_set_globals_control(struct omap_globals *omap2_globals)
 {
-	omap2_ctrl_base = base;
+	omap2_ctrl_base = omap2_globals->ctrl;
 }
 
-u32 omap_ctrl_base_get(void)
+void __iomem *omap_ctrl_base_get(void)
 {
 	return omap2_ctrl_base;
 }
@@ -50,25 +49,16 @@ u32 omap_ctrl_readl(u16 offset)
 
 void omap_ctrl_writeb(u8 val, u16 offset)
 {
-	pr_debug("omap_ctrl_writeb: writing 0x%0x to 0x%0x\n", val,
-		 (u32)OMAP_CTRL_REGADDR(offset));
-
 	__raw_writeb(val, OMAP_CTRL_REGADDR(offset));
 }
 
 void omap_ctrl_writew(u16 val, u16 offset)
 {
-	pr_debug("omap_ctrl_writew: writing 0x%0x to 0x%0x\n", val,
-		 (u32)OMAP_CTRL_REGADDR(offset));
-
 	__raw_writew(val, OMAP_CTRL_REGADDR(offset));
 }
 
 void omap_ctrl_writel(u32 val, u16 offset)
 {
-	pr_debug("omap_ctrl_writel: writing 0x%0x to 0x%0x\n", val,
-		 (u32)OMAP_CTRL_REGADDR(offset));
-
 	__raw_writel(val, OMAP_CTRL_REGADDR(offset));
 }
 
diff --git a/arch/arm/mach-omap2/memory.c b/arch/arm/mach-omap2/memory.c
index 12479081881a..73cadb2c75cf 100644
--- a/arch/arm/mach-omap2/memory.c
+++ b/arch/arm/mach-omap2/memory.c
@@ -24,6 +24,7 @@
 
 #include <asm/io.h>
 
+#include <asm/arch/common.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/sram.h>
 
@@ -32,8 +33,8 @@
 #include "memory.h"
 #include "sdrc.h"
 
-unsigned long omap2_sdrc_base;
-unsigned long omap2_sms_base;
+void __iomem *omap2_sdrc_base;
+void __iomem *omap2_sms_base;
 
 static struct memory_timings mem_timings;
 static u32 curr_perf_level = CORE_CLK_SRC_DPLL_X2;
@@ -154,6 +155,12 @@ void omap2_init_memory_params(u32 force_lock_to_unlock_mode)
 	mem_timings.slow_dll_ctrl |= ((1 << 1) | (3 << 8));
 }
 
+void __init omap2_set_globals_memory(struct omap_globals *omap2_globals)
+{
+	omap2_sdrc_base = omap2_globals->sdrc;
+	omap2_sms_base = omap2_globals->sms;
+}
+
 /* turn on smart idle modes for SDRAM scheduler and controller */
 void __init omap2_init_memory(void)
 {
diff --git a/arch/arm/mach-omap2/mux.c b/arch/arm/mach-omap2/mux.c
index 930770012a75..8f98b20f30a1 100644
--- a/arch/arm/mach-omap2/mux.c
+++ b/arch/arm/mach-omap2/mux.c
@@ -236,7 +236,7 @@ void __init_or_module omap2_cfg_debug(const struct pin_config *cfg, u8 reg)
 	warn = (orig != reg);
 	if (debug || warn)
 		printk(KERN_WARNING
-			"MUX: setup %s (0x%08x): 0x%02x -> 0x%02x\n",
+			"MUX: setup %s (0x%p): 0x%04x -> 0x%04x\n",
 			cfg->name, omap_ctrl_base_get() + cfg->mux_reg,
 			orig, reg);
 }
diff --git a/arch/arm/mach-omap2/prcm.c b/arch/arm/mach-omap2/prcm.c
index b12f423b8595..9584376d055a 100644
--- a/arch/arm/mach-omap2/prcm.c
+++ b/arch/arm/mach-omap2/prcm.c
@@ -16,12 +16,18 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/clk.h>
+#include <linux/io.h>
 
-#include <asm/io.h>
+#include <asm/arch/common.h>
+#include <asm/arch/prcm.h>
 
+#include "clock.h"
 #include "prm.h"
 #include "prm-regbits-24xx.h"
 
+static void __iomem *prm_base;
+static void __iomem *cm_base;
+
 extern void omap2_clk_prepare_for_reboot(void);
 
 u32 omap_prcm_get_reset_sources(void)
@@ -41,3 +47,50 @@ void omap_prcm_arch_reset(char mode)
 		prm_write_mod_reg(wkup, WKUP_MOD, RM_RSTCTRL);
 	}
 }
+
+static inline u32 __omap_prcm_read(void __iomem *base, s16 module, u16 reg)
+{
+	BUG_ON(!base);
+	return __raw_readl(base + module + reg);
+}
+
+static inline void __omap_prcm_write(u32 value, void __iomem *base,
+						s16 module, u16 reg)
+{
+	BUG_ON(!base);
+	__raw_writel(value, base + module + reg);
+}
+
+/* Read a register in a PRM module */
+u32 prm_read_mod_reg(s16 module, u16 idx)
+{
+	return __omap_prcm_read(prm_base, module, idx);
+}
+EXPORT_SYMBOL(prm_read_mod_reg);
+
+/* Write into a register in a PRM module */
+void prm_write_mod_reg(u32 val, s16 module, u16 idx)
+{
+	__omap_prcm_write(val, prm_base, module, idx);
+}
+EXPORT_SYMBOL(prm_write_mod_reg);
+
+/* Read a register in a CM module */
+u32 cm_read_mod_reg(s16 module, u16 idx)
+{
+	return __omap_prcm_read(cm_base, module, idx);
+}
+EXPORT_SYMBOL(cm_read_mod_reg);
+
+/* Write into a register in a CM module */
+void cm_write_mod_reg(u32 val, s16 module, u16 idx)
+{
+	__omap_prcm_write(val, cm_base, module, idx);
+}
+EXPORT_SYMBOL(cm_write_mod_reg);
+
+void __init omap2_set_globals_prcm(struct omap_globals *omap2_globals)
+{
+	prm_base = omap2_globals->prm;
+	cm_base = omap2_globals->cm;
+}
diff --git a/arch/arm/mach-omap2/prm.h b/arch/arm/mach-omap2/prm.h
index dcdb35bfa0c0..e901fb99b237 100644
--- a/arch/arm/mach-omap2/prm.h
+++ b/arch/arm/mach-omap2/prm.h
@@ -166,16 +166,8 @@
 #ifndef __ASSEMBLER__
 
 /* Power/reset management domain register get/set */
-
-static inline void prm_write_mod_reg(u32 val, s16 module, s16 idx)
-{
-	__raw_writel(val, OMAP_PRM_REGADDR(module, idx));
-}
-
-static inline u32 prm_read_mod_reg(s16 module, s16 idx)
-{
-	return __raw_readl(OMAP_PRM_REGADDR(module, idx));
-}
+extern u32 prm_read_mod_reg(s16 module, u16 idx);
+extern void prm_write_mod_reg(u32 val, s16 module, u16 idx);
 
 #endif
 
diff --git a/arch/arm/mach-omap2/sdrc.h b/arch/arm/mach-omap2/sdrc.h
index d7f23bc9550a..1b1fe4f6e030 100644
--- a/arch/arm/mach-omap2/sdrc.h
+++ b/arch/arm/mach-omap2/sdrc.h
@@ -18,13 +18,11 @@
 #include <asm/arch/sdrc.h>
 
 #ifndef __ASSEMBLER__
-extern unsigned long omap2_sdrc_base;
-extern unsigned long omap2_sms_base;
+extern void __iomem *omap2_sdrc_base;
+extern void __iomem *omap2_sms_base;
 
-#define OMAP_SDRC_REGADDR(reg)						\
-		(void __iomem *)IO_ADDRESS(omap2_sdrc_base + (reg))
-#define OMAP_SMS_REGADDR(reg)						\
-		(void __iomem *)IO_ADDRESS(omap2_sms_base + (reg))
+#define OMAP_SDRC_REGADDR(reg)			(omap2_sdrc_base + (reg))
+#define OMAP_SMS_REGADDR(reg)			(omap2_sms_base + (reg))
 
 /* SDRC global register get/set */
 
diff --git a/arch/arm/plat-omap/common.c b/arch/arm/plat-omap/common.c
index bd1cef2c3c14..8d04929a3c75 100644
--- a/arch/arm/plat-omap/common.c
+++ b/arch/arm/plat-omap/common.c
@@ -26,6 +26,7 @@
 #include <asm/io.h>
 #include <asm/setup.h>
 
+#include <asm/arch/common.h>
 #include <asm/arch/board.h>
 #include <asm/arch/control.h>
 #include <asm/arch/mux.h>
@@ -241,30 +242,70 @@ arch_initcall(omap_init_clocksource_32k);
 
 /* Global address base setup code */
 
+#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
+
+static struct omap_globals *omap2_globals;
+
+static void __init __omap2_set_globals(void)
+{
+	omap2_set_globals_memory(omap2_globals);
+	omap2_set_globals_control(omap2_globals);
+	omap2_set_globals_prcm(omap2_globals);
+}
+
+#endif
+
 #if defined(CONFIG_ARCH_OMAP2420)
+
+static struct omap_globals omap242x_globals = {
+	.tap	= (__force void __iomem *)OMAP2_IO_ADDRESS(0x48014000),
+	.sdrc	= (__force void __iomem *)OMAP2_IO_ADDRESS(OMAP2420_SDRC_BASE),
+	.sms	= (__force void __iomem *)OMAP2_IO_ADDRESS(OMAP2420_SMS_BASE),
+	.ctrl	= (__force void __iomem *)OMAP2_IO_ADDRESS(OMAP2420_CTRL_BASE),
+	.prm	= (__force void __iomem *)OMAP2_IO_ADDRESS(OMAP2420_PRM_BASE),
+	.cm	= (__force void __iomem *)OMAP2_IO_ADDRESS(OMAP2420_CM_BASE),
+};
+
 void __init omap2_set_globals_242x(void)
 {
-	omap2_sdrc_base = OMAP2420_SDRC_BASE;
-	omap2_sms_base = OMAP2420_SMS_BASE;
-	omap_ctrl_base_set(OMAP2420_CTRL_BASE);
+	omap2_globals = &omap242x_globals;
+	__omap2_set_globals();
 }
 #endif
 
 #if defined(CONFIG_ARCH_OMAP2430)
+
+static struct omap_globals omap243x_globals = {
+	.tap	= (__force void __iomem *)OMAP2_IO_ADDRESS(0x4900a000),
+	.sdrc	= (__force void __iomem *)OMAP2_IO_ADDRESS(OMAP243X_SDRC_BASE),
+	.sms	= (__force void __iomem *)OMAP2_IO_ADDRESS(OMAP243X_SMS_BASE),
+	.ctrl	= (__force void __iomem *)OMAP2_IO_ADDRESS(OMAP243X_CTRL_BASE),
+	.prm	= (__force void __iomem *)OMAP2_IO_ADDRESS(OMAP2430_PRM_BASE),
+	.cm	= (__force void __iomem *)OMAP2_IO_ADDRESS(OMAP2430_CM_BASE),
+};
+
 void __init omap2_set_globals_243x(void)
 {
-	omap2_sdrc_base = OMAP243X_SDRC_BASE;
-	omap2_sms_base = OMAP243X_SMS_BASE;
-	omap_ctrl_base_set(OMAP243X_CTRL_BASE);
+	omap2_globals = &omap243x_globals;
+	__omap2_set_globals();
 }
 #endif
 
 #if defined(CONFIG_ARCH_OMAP3430)
+
+static struct omap_globals omap343x_globals = {
+	.tap	= (__force void __iomem *)OMAP2_IO_ADDRESS(0x4830A000),
+	.sdrc	= (__force void __iomem *)OMAP2_IO_ADDRESS(OMAP343X_SDRC_BASE),
+	.sms	= (__force void __iomem *)OMAP2_IO_ADDRESS(OMAP343X_SMS_BASE),
+	.ctrl	= (__force void __iomem *)OMAP2_IO_ADDRESS(OMAP343X_CTRL_BASE),
+	.prm	= (__force void __iomem *)OMAP2_IO_ADDRESS(OMAP3430_PRM_BASE),
+	.cm	= (__force void __iomem *)OMAP2_IO_ADDRESS(OMAP3430_CM_BASE),
+};
+
 void __init omap2_set_globals_343x(void)
 {
-	omap2_sdrc_base = OMAP343X_SDRC_BASE;
-	omap2_sms_base = OMAP343X_SMS_BASE;
-	omap_ctrl_base_set(OMAP343X_CTRL_BASE);
+	omap2_globals = &omap343x_globals;
+	__omap2_set_globals();
 }
 #endif