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authorPaul Walmsley <paul@pwsan.com>2010-02-22 22:09:22 -0700
committerPaul Walmsley <paul@pwsan.com>2010-02-24 12:29:42 -0700
commit81b34fbecbfbf24ed95c2d80d5cb14149652408f (patch)
treeb29a0d117a7dda644e6d37931a7999095aeeaf69 /arch/arm/mach-omap2/clock2xxx.h
parent657ebfadc19c5a14f709dee1645082828330d5d4 (diff)
downloadblackbird-op-linux-81b34fbecbfbf24ed95c2d80d5cb14149652408f.tar.gz
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OMAP2 clock: split OMAP2420, OMAP2430 clock data into their own files
In preparation for multi-OMAP2 kernels, split mach-omap2/clock2xxx_data.c into mach-omap2/clock2420_data.c and mach-omap2/clock2430_data.c. 2430 uses a different device space physical memory layout than past or future OMAPs, and we use a different virtual memory layout as well, which causes trouble for architecture-level code/data that tries to support both. We tried using offsets from the virtual base last year, but those patches never made it upstream; so after some discussion with Tony about the best all-around approach, we'll just grit our teeth and duplicate the structures. The maintenance advantages of a single kernel config that can compile and boot on OMAP2, 3, and 4 platforms are simply too compelling. This approach does have some nice benefits beyond multi-OMAP 2 kernel support. The runtime size of OMAP2420-specific and OMAP2430-specific kernels is smaller, since unused clocks for the other OMAP2 chip will no longer be compiled in. (At some point we will mark the clock data __initdata and allocate it during registration, which will eliminate the runtime memory advantage.) It also makes the clock trees slightly easier to read, since 2420-specific and 2430-specific clocks are no longer mixed together. This patch also splits 2430-specific clock code into its own file, mach-omap2/clock2430.c, which is only compiled in for 2430 builds - mostly for organizational clarity. While here, fix a bug in the OMAP2430 clock tree: "emul_ck" was incorrectly marked as being 2420-only, when actually it is present on both OMAP2420 and OMAP2430. Thanks to Tony for some good discussions about how to approach this problem. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Tony Lindgren <tony@atomide.com> Cc: Richard Woodruff <r-woodruff2@ti.com>
Diffstat (limited to 'arch/arm/mach-omap2/clock2xxx.h')
-rw-r--r--arch/arm/mach-omap2/clock2xxx.h26
1 files changed, 13 insertions, 13 deletions
diff --git a/arch/arm/mach-omap2/clock2xxx.h b/arch/arm/mach-omap2/clock2xxx.h
index 32f3d0aa8fc4..6a658b890c17 100644
--- a/arch/arm/mach-omap2/clock2xxx.h
+++ b/arch/arm/mach-omap2/clock2xxx.h
@@ -1,12 +1,12 @@
/*
* OMAP2 clock function prototypes and macros
*
- * Copyright (C) 2005-2009 Texas Instruments, Inc.
- * Copyright (C) 2004-2009 Nokia Corporation
+ * Copyright (C) 2005-2010 Texas Instruments, Inc.
+ * Copyright (C) 2004-2010 Nokia Corporation
*/
-#ifndef __ARCH_ARM_MACH_OMAP2_CLOCK_24XX_H
-#define __ARCH_ARM_MACH_OMAP2_CLOCK_24XX_H
+#ifndef __ARCH_ARM_MACH_OMAP2_CLOCK2XXX_H
+#define __ARCH_ARM_MACH_OMAP2_CLOCK2XXX_H
unsigned long omap2_table_mpu_recalc(struct clk *clk);
int omap2_select_table_rate(struct clk *clk, unsigned long rate);
@@ -19,20 +19,20 @@ unsigned long omap2xxx_clk_get_core_rate(struct clk *clk);
u32 omap2xxx_get_apll_clkin(void);
u32 omap2xxx_get_sysclkdiv(void);
void omap2xxx_clk_prepare_for_reboot(void);
-int omap2xxx_clk_init(void);
-/* REVISIT: These should be set dynamically for CONFIG_MULTI_OMAP2 */
#ifdef CONFIG_ARCH_OMAP2420
-#define OMAP_CM_REGADDR OMAP2420_CM_REGADDR
-#define OMAP24XX_PRCM_CLKOUT_CTRL OMAP2420_PRCM_CLKOUT_CTRL
-#define OMAP24XX_PRCM_CLKEMUL_CTRL OMAP2420_PRCM_CLKEMUL_CTRL
+int omap2420_clk_init(void);
#else
-#define OMAP_CM_REGADDR OMAP2430_CM_REGADDR
-#define OMAP24XX_PRCM_CLKOUT_CTRL OMAP2430_PRCM_CLKOUT_CTRL
-#define OMAP24XX_PRCM_CLKEMUL_CTRL OMAP2430_PRCM_CLKEMUL_CTRL
+#define omap2420_clk_init() 0
#endif
-extern void __iomem *prcm_clksrc_ctrl;
+#ifdef CONFIG_ARCH_OMAP2430
+int omap2430_clk_init(void);
+#else
+#define omap2430_clk_init() 0
+#endif
+
+extern void __iomem *prcm_clksrc_ctrl, *cm_idlest_pll;
extern struct clk *dclk;
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