linux/arch/arm/mach-omap2/clock2xxx.h

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/*
* OMAP2 clock function prototypes and macros
*
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>
2010-02-23 13:09:22 +08:00
* Copyright (C) 2005-2010 Texas Instruments, Inc.
* Copyright (C) 2004-2010 Nokia Corporation
*/
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>
2010-02-23 13:09:22 +08:00
#ifndef __ARCH_ARM_MACH_OMAP2_CLOCK2XXX_H
#define __ARCH_ARM_MACH_OMAP2_CLOCK2XXX_H
#include <linux/clk-provider.h>
#include "clock.h"
unsigned long omap2_table_mpu_recalc(struct clk_hw *clk,
unsigned long parent_rate);
int omap2_select_table_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate);
long omap2_round_to_table_rate(struct clk_hw *hw, unsigned long rate,
unsigned long *parent_rate);
unsigned long omap2xxx_sys_clk_recalc(struct clk_hw *clk,
unsigned long parent_rate);
unsigned long omap2_osc_clk_recalc(struct clk_hw *clk,
unsigned long parent_rate);
void omap2xxx_clkt_dpllcore_init(struct clk_hw *hw);
unsigned long omap2_clk_apll54_recalc(struct clk_hw *hw,
unsigned long parent_rate);
unsigned long omap2_clk_apll96_recalc(struct clk_hw *hw,
unsigned long parent_rate);
unsigned long omap2xxx_clk_get_core_rate(void);
u32 omap2xxx_get_apll_clkin(void);
u32 omap2xxx_get_sysclkdiv(void);
void omap2xxx_clk_prepare_for_reboot(void);
void omap2xxx_clkt_vps_check_bootloader_rates(void);
void omap2xxx_clkt_vps_late_init(void);
#ifdef CONFIG_SOC_OMAP2420
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>
2010-02-23 13:09:22 +08:00
int omap2420_clk_init(void);
#else
#define omap2420_clk_init() do { } while(0)
#endif
#ifdef CONFIG_SOC_OMAP2430
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>
2010-02-23 13:09:22 +08:00
int omap2430_clk_init(void);
#else
#define omap2430_clk_init() do { } while(0)
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>
2010-02-23 13:09:22 +08:00
#endif
extern void __iomem *prcm_clksrc_ctrl;
extern struct clk_hw *dclk_hw;
int omap2_enable_osc_ck(struct clk_hw *hw);
void omap2_disable_osc_ck(struct clk_hw *hw);
int omap2_clk_apll96_enable(struct clk_hw *hw);
int omap2_clk_apll54_enable(struct clk_hw *hw);
void omap2_clk_apll96_disable(struct clk_hw *hw);
void omap2_clk_apll54_disable(struct clk_hw *hw);
#endif