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ARM: OMAP2+: CM/hwmod: split CM functions into OMAP2, OMAP3-specific files

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Move OMAP3xxx-specific CM functions & macros into cm3xxx.[ch] and
OMAP2xxx-specific macros into cm2xxx.[ch].  Move basic CM register
access functions into static inline functions in cm2xxx_3xxx.h,
leaving only OMAP2/3 hardreset functions in cm2xxx_3xxx.c.

As part of this, split the CM and hwmod code that waits for devices to
become ready into SoC-specific functions.

This is in preparation for the upcoming move of this code to drivers/.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Reviewed-by: Russ Dill <Russ.Dill@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
This commit is contained in:
Paul Walmsley 2012-10-21 01:01:11 -06:00
parent 498153995b
commit ff4ae5d931
24 changed files with 441 additions and 271 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
arch/arm/mach-omap2/Makefile
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@ -94,10 +94,8 @@ endif
# PRCM
obj-y += prcm.o prm_common.o
obj-$(CONFIG_ARCH_OMAP2) += cm2xxx_3xxx.o prm2xxx_3xxx.o
obj-$(CONFIG_ARCH_OMAP2) += prm2xxx.o
obj-$(CONFIG_ARCH_OMAP3) += cm2xxx_3xxx.o prm2xxx_3xxx.o
obj-$(CONFIG_ARCH_OMAP3) += prm3xxx.o
obj-$(CONFIG_ARCH_OMAP2) += prm2xxx_3xxx.o prm2xxx.o cm2xxx.o
obj-$(CONFIG_ARCH_OMAP3) += prm2xxx_3xxx.o prm3xxx.o cm3xxx.o
obj-$(CONFIG_ARCH_OMAP3) += vc3xxx_data.o vp3xxx_data.o
obj-$(CONFIG_SOC_AM33XX) += prm33xx.o cm33xx.o
omap-prcm-4-5-common = cminst44xx.o cm44xx.o prm44xx.o \

2
arch/arm/mach-omap2/clkt2xxx_apll.c
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@ -26,7 +26,7 @@
#include "clock.h"
#include "clock2xxx.h"
#include "cm2xxx_3xxx.h"
#include "cm2xxx.h"
#include "cm-regbits-24xx.h"
/* CM_CLKEN_PLL.EN_{54,96}M_PLL options (24XX) */

2
arch/arm/mach-omap2/clkt2xxx_dpll.c
View File

@ -17,7 +17,7 @@
#include <plat/clock.h>
#include "clock.h"
#include "cm2xxx_3xxx.h"
#include "cm2xxx.h"
#include "cm-regbits-24xx.h"
/* Private functions */

3
arch/arm/mach-omap2/clock.c
View File

@ -33,7 +33,8 @@
#include "soc.h"
#include "clockdomain.h"
#include "clock.h"
#include "cm2xxx_3xxx.h"
#include "cm2xxx.h"
#include "cm3xxx.h"
#include "cm-regbits-24xx.h"
#include "cm-regbits-34xx.h"

2
arch/arm/mach-omap2/clock2420_data.c
View File

@ -25,7 +25,7 @@
#include "clock.h"
#include "clock2xxx.h"
#include "opp2xxx.h"
#include "cm2xxx_3xxx.h"
#include "cm2xxx.h"
#include "prm2xxx_3xxx.h"
#include "prm-regbits-24xx.h"
#include "cm-regbits-24xx.h"

2
arch/arm/mach-omap2/clock2430.c
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@ -27,7 +27,7 @@
#include "iomap.h"
#include "clock.h"
#include "clock2xxx.h"
#include "cm2xxx_3xxx.h"
#include "cm2xxx.h"
#include "cm-regbits-24xx.h"
/**

2
arch/arm/mach-omap2/clock2430_data.c
View File

@ -24,7 +24,7 @@
#include "clock.h"
#include "clock2xxx.h"
#include "opp2xxx.h"
#include "cm2xxx_3xxx.h"
#include "cm2xxx.h"
#include "prm2xxx_3xxx.h"
#include "prm-regbits-24xx.h"
#include "cm-regbits-24xx.h"

2
arch/arm/mach-omap2/clock34xx.c
View File

@ -25,7 +25,7 @@
#include "clock.h"
#include "clock34xx.h"
#include "cm2xxx_3xxx.h"
#include "cm3xxx.h"
#include "cm-regbits-34xx.h"
/**

2
arch/arm/mach-omap2/clock3517.c
View File

@ -25,7 +25,7 @@
#include "clock.h"
#include "clock3517.h"
#include "cm2xxx_3xxx.h"
#include "cm3xxx.h"
#include "cm-regbits-34xx.h"
/*

2
arch/arm/mach-omap2/clock3xxx_data.c
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@ -30,7 +30,7 @@
#include "clock34xx.h"
#include "clock36xx.h"
#include "clock3517.h"
#include "cm2xxx_3xxx.h"
#include "cm3xxx.h"
#include "cm-regbits-34xx.h"
#include "prm2xxx_3xxx.h"
#include "prm-regbits-34xx.h"

27
arch/arm/mach-omap2/clockdomain2xxx_3xxx.c
View File

@ -17,7 +17,8 @@
#include "prm.h"
#include "prm2xxx_3xxx.h"
#include "cm.h"
#include "cm2xxx_3xxx.h"
#include "cm2xxx.h"
#include "cm3xxx.h"
#include "cm-regbits-24xx.h"
#include "cm-regbits-34xx.h"
#include "prm-regbits-24xx.h"
@ -176,15 +177,15 @@ static int omap3_clkdm_wakeup(struct clockdomain *clkdm)
return 0;
}
static int omap2_clkdm_clk_enable(struct clockdomain *clkdm)
static int omap2xxx_clkdm_clk_enable(struct clockdomain *clkdm)
{
bool hwsup = false;
if (!clkdm->clktrctrl_mask)
return 0;
hwsup = omap2_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs,
clkdm->clktrctrl_mask);
hwsup = omap3xxx_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs,
clkdm->clktrctrl_mask);
if (hwsup) {
/* Disable HW transitions when we are changing deps */
@ -199,15 +200,15 @@ static int omap2_clkdm_clk_enable(struct clockdomain *clkdm)
return 0;
}
static int omap2_clkdm_clk_disable(struct clockdomain *clkdm)
static int omap2xxx_clkdm_clk_disable(struct clockdomain *clkdm)
{
bool hwsup = false;
if (!clkdm->clktrctrl_mask)
return 0;
hwsup = omap2_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs,
clkdm->clktrctrl_mask);
hwsup = omap3xxx_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs,
clkdm->clktrctrl_mask);
if (hwsup) {
/* Disable HW transitions when we are changing deps */
@ -258,8 +259,8 @@ static int omap3xxx_clkdm_clk_enable(struct clockdomain *clkdm)
return 0;
}
hwsup = omap2_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs,
clkdm->clktrctrl_mask);
hwsup = omap2xxx_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs,
clkdm->clktrctrl_mask);
if (hwsup) {
/* Disable HW transitions when we are changing deps */
@ -292,8 +293,8 @@ static int omap3xxx_clkdm_clk_disable(struct clockdomain *clkdm)
return 0;
}
hwsup = omap2_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs,
clkdm->clktrctrl_mask);
hwsup = omap2xxx_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs,
clkdm->clktrctrl_mask);
if (hwsup) {
/* Disable HW transitions when we are changing deps */
@ -317,8 +318,8 @@ struct clkdm_ops omap2_clkdm_operations = {
.clkdm_wakeup = omap2_clkdm_wakeup,
.clkdm_allow_idle = omap2_clkdm_allow_idle,
.clkdm_deny_idle = omap2_clkdm_deny_idle,
.clkdm_clk_enable = omap2_clkdm_clk_enable,
.clkdm_clk_disable = omap2_clkdm_clk_disable,
.clkdm_clk_enable = omap2xxx_clkdm_clk_enable,
.clkdm_clk_disable = omap2xxx_clkdm_clk_disable,
};
struct clkdm_ops omap3_clkdm_operations = {

168
arch/arm/mach-omap2/cm2xxx.c Normal file
View File

@ -0,0 +1,168 @@
/*
* OMAP2xxx CM module functions
*
* Copyright (C) 2009 Nokia Corporation
* Copyright (C) 2012 Texas Instruments, Inc.
* Paul Walmsley
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/err.h>
#include <linux/io.h>
#include "soc.h"
#include "iomap.h"
#include "common.h"
#include "cm.h"
#include "cm2xxx.h"
#include "cm-regbits-24xx.h"
/* CM_AUTOIDLE_PLL.AUTO_* bit values for DPLLs */
#define DPLL_AUTOIDLE_DISABLE 0x0
#define OMAP2XXX_DPLL_AUTOIDLE_LOW_POWER_STOP 0x3
/* CM_AUTOIDLE_PLL.AUTO_* bit values for APLLs (OMAP2xxx only) */
#define OMAP2XXX_APLL_AUTOIDLE_DISABLE 0x0
#define OMAP2XXX_APLL_AUTOIDLE_LOW_POWER_STOP 0x3
static const u8 omap2xxx_cm_idlest_offs[] = {
CM_IDLEST1, CM_IDLEST2, OMAP2430_CM_IDLEST3, OMAP24XX_CM_IDLEST4
};
/*
*
*/
static void _write_clktrctrl(u8 c, s16 module, u32 mask)
{
u32 v;
v = omap2_cm_read_mod_reg(module, OMAP2_CM_CLKSTCTRL);
v &= ~mask;
v |= c << __ffs(mask);
omap2_cm_write_mod_reg(v, module, OMAP2_CM_CLKSTCTRL);
}
bool omap2xxx_cm_is_clkdm_in_hwsup(s16 module, u32 mask)
{
u32 v;
v = omap2_cm_read_mod_reg(module, OMAP2_CM_CLKSTCTRL);
v &= mask;
v >>= __ffs(mask);
return (v == OMAP24XX_CLKSTCTRL_ENABLE_AUTO) ? 1 : 0;
}
void omap2xxx_cm_clkdm_enable_hwsup(s16 module, u32 mask)
{
_write_clktrctrl(OMAP24XX_CLKSTCTRL_ENABLE_AUTO, module, mask);
}
void omap2xxx_cm_clkdm_disable_hwsup(s16 module, u32 mask)
{
_write_clktrctrl(OMAP24XX_CLKSTCTRL_DISABLE_AUTO, module, mask);
}
/*
* DPLL autoidle control
*/
static void _omap2xxx_set_dpll_autoidle(u8 m)
{
u32 v;
v = omap2_cm_read_mod_reg(PLL_MOD, CM_AUTOIDLE);
v &= ~OMAP24XX_AUTO_DPLL_MASK;
v |= m << OMAP24XX_AUTO_DPLL_SHIFT;
omap2_cm_write_mod_reg(v, PLL_MOD, CM_AUTOIDLE);
}
void omap2xxx_cm_set_dpll_disable_autoidle(void)
{
_omap2xxx_set_dpll_autoidle(OMAP2XXX_DPLL_AUTOIDLE_LOW_POWER_STOP);
}
void omap2xxx_cm_set_dpll_auto_low_power_stop(void)
{
_omap2xxx_set_dpll_autoidle(DPLL_AUTOIDLE_DISABLE);
}
/*
* APLL autoidle control
*/
static void _omap2xxx_set_apll_autoidle(u8 m, u32 mask)
{
u32 v;
v = omap2_cm_read_mod_reg(PLL_MOD, CM_AUTOIDLE);
v &= ~mask;
v |= m << __ffs(mask);
omap2_cm_write_mod_reg(v, PLL_MOD, CM_AUTOIDLE);
}
void omap2xxx_cm_set_apll54_disable_autoidle(void)
{
_omap2xxx_set_apll_autoidle(OMAP2XXX_APLL_AUTOIDLE_LOW_POWER_STOP,
OMAP24XX_AUTO_54M_MASK);
}
void omap2xxx_cm_set_apll54_auto_low_power_stop(void)
{
_omap2xxx_set_apll_autoidle(OMAP2XXX_APLL_AUTOIDLE_DISABLE,
OMAP24XX_AUTO_54M_MASK);
}
void omap2xxx_cm_set_apll96_disable_autoidle(void)
{
_omap2xxx_set_apll_autoidle(OMAP2XXX_APLL_AUTOIDLE_LOW_POWER_STOP,
OMAP24XX_AUTO_96M_MASK);
}
void omap2xxx_cm_set_apll96_auto_low_power_stop(void)
{
_omap2xxx_set_apll_autoidle(OMAP2XXX_APLL_AUTOIDLE_DISABLE,
OMAP24XX_AUTO_96M_MASK);
}
/*
*
*/
/**
* omap2xxx_cm_wait_module_ready - wait for a module to leave idle or standby
* @prcm_mod: PRCM module offset
* @idlest_id: CM_IDLESTx register ID (i.e., x = 1, 2, 3)
* @idlest_shift: shift of the bit in the CM_IDLEST* register to check
*
* Wait for the PRCM to indicate that the module identified by
* (@prcm_mod, @idlest_id, @idlest_shift) is clocked. Return 0 upon
* success or -EBUSY if the module doesn't enable in time.
*/
int omap2xxx_cm_wait_module_ready(s16 prcm_mod, u8 idlest_id, u8 idlest_shift)
{
int ena = 0, i = 0;
u8 cm_idlest_reg;
u32 mask;
if (!idlest_id || (idlest_id > ARRAY_SIZE(omap2xxx_cm_idlest_offs)))
return -EINVAL;
cm_idlest_reg = omap2xxx_cm_idlest_offs[idlest_id - 1];
mask = 1 << idlest_shift;
ena = mask;
omap_test_timeout(((omap2_cm_read_mod_reg(prcm_mod, cm_idlest_reg) &
mask) == ena), MAX_MODULE_READY_TIME, i);
return (i < MAX_MODULE_READY_TIME) ? 0 : -EBUSY;
}

66
arch/arm/mach-omap2/cm2xxx.h Normal file
View File

@ -0,0 +1,66 @@
/*
* OMAP2xxx Clock Management (CM) register definitions
*
* Copyright (C) 2007-2009, 2012 Texas Instruments, Inc.
* Copyright (C) 2007-2010 Nokia Corporation
* Paul Walmsley
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* The CM hardware modules on the OMAP2/3 are quite similar to each
* other. The CM modules/instances on OMAP4 are quite different, so
* they are handled in a separate file.
*/
#ifndef __ARCH_ASM_MACH_OMAP2_CM2XXX_H
#define __ARCH_ASM_MACH_OMAP2_CM2XXX_H
#include "prcm-common.h"
#include "cm2xxx_3xxx.h"
#define OMAP2420_CM_REGADDR(module, reg) \
OMAP2_L4_IO_ADDRESS(OMAP2420_CM_BASE + (module) + (reg))
#define OMAP2430_CM_REGADDR(module, reg) \
OMAP2_L4_IO_ADDRESS(OMAP2430_CM_BASE + (module) + (reg))
/*
* Module specific CM register offsets from CM_BASE + domain offset
* Use cm_{read,write}_mod_reg() with these registers.
* These register offsets generally appear in more than one PRCM submodule.
*/
/* OMAP2-specific register offsets */
#define OMAP24XX_CM_FCLKEN2 0x0004
#define OMAP24XX_CM_ICLKEN4 0x001c
#define OMAP24XX_CM_AUTOIDLE4 0x003c
#define OMAP24XX_CM_IDLEST4 0x002c
/* CM_IDLEST bit field values to indicate deasserted IdleReq */
#define OMAP24XX_CM_IDLEST_VAL 0
/* Clock management domain register get/set */
#ifndef __ASSEMBLER__
extern void omap2xxx_cm_clkdm_enable_hwsup(s16 module, u32 mask);
extern void omap2xxx_cm_clkdm_disable_hwsup(s16 module, u32 mask);
extern void omap2xxx_cm_set_dpll_disable_autoidle(void);
extern void omap2xxx_cm_set_dpll_auto_low_power_stop(void);
extern void omap2xxx_cm_set_apll54_disable_autoidle(void);
extern void omap2xxx_cm_set_apll54_auto_low_power_stop(void);
extern void omap2xxx_cm_set_apll96_disable_autoidle(void);
extern void omap2xxx_cm_set_apll96_auto_low_power_stop(void);
extern bool omap2xxx_cm_is_clkdm_in_hwsup(s16 module, u32 mask);
extern int omap2xxx_cm_wait_module_ready(s16 prcm_mod, u8 idlest_id,
u8 idlest_shift);
#endif
#endif

115
arch/arm/mach-omap2/cm2xxx_3xxx.h
View File

@ -18,27 +18,6 @@
#include "prcm-common.h"
#define OMAP2420_CM_REGADDR(module, reg) \
OMAP2_L4_IO_ADDRESS(OMAP2420_CM_BASE + (module) + (reg))
#define OMAP2430_CM_REGADDR(module, reg) \
OMAP2_L4_IO_ADDRESS(OMAP2430_CM_BASE + (module) + (reg))
#define OMAP34XX_CM_REGADDR(module, reg) \
OMAP2_L4_IO_ADDRESS(OMAP3430_CM_BASE + (module) + (reg))
/*
* OMAP3-specific global CM registers
* Use cm_{read,write}_reg() with these registers.
* These registers appear once per CM module.
*/
#define OMAP3430_CM_REVISION OMAP34XX_CM_REGADDR(OCP_MOD, 0x0000)
#define OMAP3430_CM_SYSCONFIG OMAP34XX_CM_REGADDR(OCP_MOD, 0x0010)
#define OMAP3430_CM_POLCTRL OMAP34XX_CM_REGADDR(OCP_MOD, 0x009c)
#define OMAP3_CM_CLKOUT_CTRL_OFFSET 0x0070
#define OMAP3430_CM_CLKOUT_CTRL OMAP_CM_REGADDR(OMAP3430_CCR_MOD, 0x0070)
/*
* Module specific CM register offsets from CM_BASE + domain offset
* Use cm_{read,write}_mod_reg() with these registers.
@ -57,6 +36,7 @@
#define CM_IDLEST 0x0020
#define CM_IDLEST1 CM_IDLEST
#define CM_IDLEST2 0x0024
#define OMAP2430_CM_IDLEST3 0x0028
#define CM_AUTOIDLE 0x0030
#define CM_AUTOIDLE1 CM_AUTOIDLE
#define CM_AUTOIDLE2 0x0034
@ -66,70 +46,43 @@
#define CM_CLKSEL2 0x0044
#define OMAP2_CM_CLKSTCTRL 0x0048
/* OMAP2-specific register offsets */
#define OMAP24XX_CM_FCLKEN2 0x0004
#define OMAP24XX_CM_ICLKEN4 0x001c
#define OMAP24XX_CM_AUTOIDLE4 0x003c
#define OMAP24XX_CM_IDLEST4 0x002c
#define OMAP2430_CM_IDLEST3 0x0028
/* OMAP3-specific register offsets */
#define OMAP3430_CM_CLKEN_PLL 0x0004
#define OMAP3430ES2_CM_CLKEN2 0x0004
#define OMAP3430ES2_CM_FCLKEN3 0x0008
#define OMAP3430_CM_IDLEST_PLL CM_IDLEST2
#define OMAP3430_CM_AUTOIDLE_PLL CM_AUTOIDLE2
#define OMAP3430ES2_CM_AUTOIDLE2_PLL CM_AUTOIDLE2
#define OMAP3430_CM_CLKSEL1 CM_CLKSEL
#define OMAP3430_CM_CLKSEL1_PLL CM_CLKSEL
#define OMAP3430_CM_CLKSEL2_PLL CM_CLKSEL2
#define OMAP3430_CM_SLEEPDEP CM_CLKSEL2
#define OMAP3430_CM_CLKSEL3 OMAP2_CM_CLKSTCTRL
#define OMAP3430_CM_CLKSTST 0x004c
#define OMAP3430ES2_CM_CLKSEL4 0x004c
#define OMAP3430ES2_CM_CLKSEL5 0x0050
#define OMAP3430_CM_CLKSEL2_EMU 0x0050
#define OMAP3430_CM_CLKSEL3_EMU 0x0054
/* CM_IDLEST bit field values to indicate deasserted IdleReq */
#define OMAP24XX_CM_IDLEST_VAL 0
#define OMAP34XX_CM_IDLEST_VAL 1
/* Clock management domain register get/set */
#ifndef __ASSEMBLER__
extern u32 omap2_cm_read_mod_reg(s16 module, u16 idx);
extern void omap2_cm_write_mod_reg(u32 val, s16 module, u16 idx);
extern u32 omap2_cm_rmw_mod_reg_bits(u32 mask, u32 bits, s16 module, s16 idx);
#include <linux/io.h>
extern int omap2_cm_wait_module_ready(s16 prcm_mod, u8 idlest_id,
u8 idlest_shift);
extern u32 omap2_cm_set_mod_reg_bits(u32 bits, s16 module, s16 idx);
extern u32 omap2_cm_clear_mod_reg_bits(u32 bits, s16 module, s16 idx);
static inline u32 omap2_cm_read_mod_reg(s16 module, u16 idx)
{
return __raw_readl(cm_base + module + idx);
}
extern bool omap2_cm_is_clkdm_in_hwsup(s16 module, u32 mask);
extern void omap2xxx_cm_clkdm_enable_hwsup(s16 module, u32 mask);
extern void omap2xxx_cm_clkdm_disable_hwsup(s16 module, u32 mask);
static inline void omap2_cm_write_mod_reg(u32 val, s16 module, u16 idx)
{
__raw_writel(val, cm_base + module + idx);
}
extern void omap3xxx_cm_clkdm_enable_hwsup(s16 module, u32 mask);
extern void omap3xxx_cm_clkdm_disable_hwsup(s16 module, u32 mask);
extern void omap3xxx_cm_clkdm_force_sleep(s16 module, u32 mask);
extern void omap3xxx_cm_clkdm_force_wakeup(s16 module, u32 mask);
/* Read-modify-write a register in a CM module. Caller must lock */
static inline u32 omap2_cm_rmw_mod_reg_bits(u32 mask, u32 bits, s16 module,
s16 idx)
{
u32 v;
extern void omap2xxx_cm_set_dpll_disable_autoidle(void);
extern void omap2xxx_cm_set_dpll_auto_low_power_stop(void);
v = omap2_cm_read_mod_reg(module, idx);
v &= ~mask;
v |= bits;
omap2_cm_write_mod_reg(v, module, idx);
extern void omap2xxx_cm_set_apll54_disable_autoidle(void);
extern void omap2xxx_cm_set_apll54_auto_low_power_stop(void);
extern void omap2xxx_cm_set_apll96_disable_autoidle(void);
extern void omap2xxx_cm_set_apll96_auto_low_power_stop(void);
return v;
}
static inline u32 omap2_cm_set_mod_reg_bits(u32 bits, s16 module, s16 idx)
{
return omap2_cm_rmw_mod_reg_bits(bits, bits, module, idx);
}
static inline u32 omap2_cm_clear_mod_reg_bits(u32 bits, s16 module, s16 idx)
{
return omap2_cm_rmw_mod_reg_bits(bits, 0x0, module, idx);
}
#endif
@ -147,10 +100,4 @@ extern void omap2xxx_cm_set_apll96_auto_low_power_stop(void);
#define OMAP_ST_GFX_MASK (1 << 0)
/* Function prototypes */
# ifndef __ASSEMBLER__
extern void omap3_cm_save_context(void);
extern void omap3_cm_restore_context(void);
# endif
#endif

161
arch/arm/mach-omap2/cm2xxx_3xxx.c → arch/arm/mach-omap2/cm3xxx.c
View File

@ -2,6 +2,7 @@
* OMAP2/3 CM module functions
*
* Copyright (C) 2009 Nokia Corporation
* Copyright (C) 2012 Texas Instruments, Inc.
* Paul Walmsley
*
* This program is free software; you can redistribute it and/or modify
@ -12,8 +13,6 @@
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/delay.h>
#include <linux/spinlock.h>
#include <linux/list.h>
#include <linux/errno.h>
#include <linux/err.h>
#include <linux/io.h>
@ -22,55 +21,13 @@
#include "iomap.h"
#include "common.h"
#include "cm.h"
#include "cm2xxx_3xxx.h"
#include "cm-regbits-24xx.h"
#include "cm3xxx.h"
#include "cm-regbits-34xx.h"
/* CM_AUTOIDLE_PLL.AUTO_* bit values for DPLLs */
#define DPLL_AUTOIDLE_DISABLE 0x0
#define OMAP2XXX_DPLL_AUTOIDLE_LOW_POWER_STOP 0x3
/* CM_AUTOIDLE_PLL.AUTO_* bit values for APLLs (OMAP2xxx only) */
#define OMAP2XXX_APLL_AUTOIDLE_DISABLE 0x0
#define OMAP2XXX_APLL_AUTOIDLE_LOW_POWER_STOP 0x3
static const u8 cm_idlest_offs[] = {
CM_IDLEST1, CM_IDLEST2, OMAP2430_CM_IDLEST3, OMAP24XX_CM_IDLEST4
static const u8 omap3xxx_cm_idlest_offs[] = {
CM_IDLEST1, CM_IDLEST2, OMAP2430_CM_IDLEST3
};
u32 omap2_cm_read_mod_reg(s16 module, u16 idx)
{
return __raw_readl(cm_base + module + idx);
}
void omap2_cm_write_mod_reg(u32 val, s16 module, u16 idx)
{
__raw_writel(val, cm_base + module + idx);
}
/* Read-modify-write a register in a CM module. Caller must lock */
u32 omap2_cm_rmw_mod_reg_bits(u32 mask, u32 bits, s16 module, s16 idx)
{
u32 v;
v = omap2_cm_read_mod_reg(module, idx);
v &= ~mask;
v |= bits;
omap2_cm_write_mod_reg(v, module, idx);
return v;
}
u32 omap2_cm_set_mod_reg_bits(u32 bits, s16 module, s16 idx)
{
return omap2_cm_rmw_mod_reg_bits(bits, bits, module, idx);
}
u32 omap2_cm_clear_mod_reg_bits(u32 bits, s16 module, s16 idx)
{
return omap2_cm_rmw_mod_reg_bits(bits, 0x0, module, idx);
}
/*
*
*/
@ -85,33 +42,15 @@ static void _write_clktrctrl(u8 c, s16 module, u32 mask)
omap2_cm_write_mod_reg(v, module, OMAP2_CM_CLKSTCTRL);
}
bool omap2_cm_is_clkdm_in_hwsup(s16 module, u32 mask)
bool omap3xxx_cm_is_clkdm_in_hwsup(s16 module, u32 mask)
{
u32 v;
bool ret = 0;
BUG_ON(!cpu_is_omap24xx() && !cpu_is_omap34xx());
v = omap2_cm_read_mod_reg(module, OMAP2_CM_CLKSTCTRL);
v &= mask;
v >>= __ffs(mask);
if (cpu_is_omap24xx())
ret = (v == OMAP24XX_CLKSTCTRL_ENABLE_AUTO) ? 1 : 0;
else
ret = (v == OMAP34XX_CLKSTCTRL_ENABLE_AUTO) ? 1 : 0;
return ret;
}
void omap2xxx_cm_clkdm_enable_hwsup(s16 module, u32 mask)
{
_write_clktrctrl(OMAP24XX_CLKSTCTRL_ENABLE_AUTO, module, mask);
}
void omap2xxx_cm_clkdm_disable_hwsup(s16 module, u32 mask)
{
_write_clktrctrl(OMAP24XX_CLKSTCTRL_DISABLE_AUTO, module, mask);
return (v == OMAP34XX_CLKSTCTRL_ENABLE_AUTO) ? 1 : 0;
}
void omap3xxx_cm_clkdm_enable_hwsup(s16 module, u32 mask)
@ -134,102 +73,36 @@ void omap3xxx_cm_clkdm_force_wakeup(s16 module, u32 mask)
_write_clktrctrl(OMAP34XX_CLKSTCTRL_FORCE_WAKEUP, module, mask);
}
/*
* DPLL autoidle control
*/
static void _omap2xxx_set_dpll_autoidle(u8 m)
{
u32 v;
v = omap2_cm_read_mod_reg(PLL_MOD, CM_AUTOIDLE);
v &= ~OMAP24XX_AUTO_DPLL_MASK;
v |= m << OMAP24XX_AUTO_DPLL_SHIFT;
omap2_cm_write_mod_reg(v, PLL_MOD, CM_AUTOIDLE);
}
void omap2xxx_cm_set_dpll_disable_autoidle(void)
{
_omap2xxx_set_dpll_autoidle(OMAP2XXX_DPLL_AUTOIDLE_LOW_POWER_STOP);
}
void omap2xxx_cm_set_dpll_auto_low_power_stop(void)
{
_omap2xxx_set_dpll_autoidle(DPLL_AUTOIDLE_DISABLE);
}
/*
* APLL autoidle control
*/
static void _omap2xxx_set_apll_autoidle(u8 m, u32 mask)
{
u32 v;
v = omap2_cm_read_mod_reg(PLL_MOD, CM_AUTOIDLE);
v &= ~mask;
v |= m << __ffs(mask);
omap2_cm_write_mod_reg(v, PLL_MOD, CM_AUTOIDLE);
}
void omap2xxx_cm_set_apll54_disable_autoidle(void)
{
_omap2xxx_set_apll_autoidle(OMAP2XXX_APLL_AUTOIDLE_LOW_POWER_STOP,
OMAP24XX_AUTO_54M_MASK);
}
void omap2xxx_cm_set_apll54_auto_low_power_stop(void)
{
_omap2xxx_set_apll_autoidle(OMAP2XXX_APLL_AUTOIDLE_DISABLE,
OMAP24XX_AUTO_54M_MASK);
}
void omap2xxx_cm_set_apll96_disable_autoidle(void)
{
_omap2xxx_set_apll_autoidle(OMAP2XXX_APLL_AUTOIDLE_LOW_POWER_STOP,
OMAP24XX_AUTO_96M_MASK);
}
void omap2xxx_cm_set_apll96_auto_low_power_stop(void)
{
_omap2xxx_set_apll_autoidle(OMAP2XXX_APLL_AUTOIDLE_DISABLE,
OMAP24XX_AUTO_96M_MASK);
}
/*
*
*/
/**
* omap2_cm_wait_idlest_ready - wait for a module to leave idle or standby
* omap3xxx_cm_wait_module_ready - wait for a module to leave idle or standby
* @prcm_mod: PRCM module offset
* @idlest_id: CM_IDLESTx register ID (i.e., x = 1, 2, 3)
* @idlest_shift: shift of the bit in the CM_IDLEST* register to check
*
* XXX document
* Wait for the PRCM to indicate that the module identified by
* (@prcm_mod, @idlest_id, @idlest_shift) is clocked. Return 0 upon
* success or -EBUSY if the module doesn't enable in time.
*/
int omap2_cm_wait_module_ready(s16 prcm_mod, u8 idlest_id, u8 idlest_shift)
int omap3xxx_cm_wait_module_ready(s16 prcm_mod, u8 idlest_id, u8 idlest_shift)
{
int ena = 0, i = 0;
u8 cm_idlest_reg;
u32 mask;
if (!idlest_id || (idlest_id > ARRAY_SIZE(cm_idlest_offs)))
if (!idlest_id || (idlest_id > ARRAY_SIZE(omap3xxx_cm_idlest_offs)))
return -EINVAL;
cm_idlest_reg = cm_idlest_offs[idlest_id - 1];
cm_idlest_reg = omap3xxx_cm_idlest_offs[idlest_id - 1];
mask = 1 << idlest_shift;
ena = 0;
if (cpu_is_omap24xx())
ena = mask;
else if (cpu_is_omap34xx())
ena = 0;
else
BUG();
omap_test_timeout(((omap2_cm_read_mod_reg(prcm_mod, cm_idlest_reg) & mask) == ena),
MAX_MODULE_READY_TIME, i);
omap_test_timeout(((omap2_cm_read_mod_reg(prcm_mod, cm_idlest_reg) &
mask) == ena), MAX_MODULE_READY_TIME, i);
return (i < MAX_MODULE_READY_TIME) ? 0 : -EBUSY;
}
@ -237,7 +110,6 @@ int omap2_cm_wait_module_ready(s16 prcm_mod, u8 idlest_id, u8 idlest_shift)
/*
* Context save/restore code - OMAP3 only
*/
#ifdef CONFIG_ARCH_OMAP3
struct omap3_cm_regs {
u32 iva2_cm_clksel1;
u32 iva2_cm_clksel2;
@ -555,4 +427,3 @@ void omap3_cm_restore_context(void)
omap2_cm_write_mod_reg(cm_context.cm_clkout_ctrl, OMAP3430_CCR_MOD,
OMAP3_CM_CLKOUT_CTRL_OFFSET);
}
#endif

86
arch/arm/mach-omap2/cm3xxx.h Normal file
View File

@ -0,0 +1,86 @@
/*
* OMAP2/3 Clock Management (CM) register definitions
*
* Copyright (C) 2007-2009 Texas Instruments, Inc.
* Copyright (C) 2007-2010 Nokia Corporation
* Paul Walmsley
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* The CM hardware modules on the OMAP2/3 are quite similar to each
* other. The CM modules/instances on OMAP4 are quite different, so
* they are handled in a separate file.
*/
#ifndef __ARCH_ASM_MACH_OMAP2_CM3XXX_H
#define __ARCH_ASM_MACH_OMAP2_CM3XXX_H
#include "prcm-common.h"
#include "cm2xxx_3xxx.h"
#define OMAP34XX_CM_REGADDR(module, reg) \
OMAP2_L4_IO_ADDRESS(OMAP3430_CM_BASE + (module) + (reg))
/*
* OMAP3-specific global CM registers
* Use cm_{read,write}_reg() with these registers.
* These registers appear once per CM module.
*/
#define OMAP3430_CM_REVISION OMAP34XX_CM_REGADDR(OCP_MOD, 0x0000)
#define OMAP3430_CM_SYSCONFIG OMAP34XX_CM_REGADDR(OCP_MOD, 0x0010)
#define OMAP3430_CM_POLCTRL OMAP34XX_CM_REGADDR(OCP_MOD, 0x009c)
#define OMAP3_CM_CLKOUT_CTRL_OFFSET 0x0070
#define OMAP3430_CM_CLKOUT_CTRL OMAP_CM_REGADDR(OMAP3430_CCR_MOD, 0x0070)
/*
* Module specific CM register offsets from CM_BASE + domain offset
* Use cm_{read,write}_mod_reg() with these registers.
* These register offsets generally appear in more than one PRCM submodule.
*/
/* OMAP3-specific register offsets */
#define OMAP3430_CM_CLKEN_PLL 0x0004
#define OMAP3430ES2_CM_CLKEN2 0x0004
#define OMAP3430ES2_CM_FCLKEN3 0x0008
#define OMAP3430_CM_IDLEST_PLL CM_IDLEST2
#define OMAP3430_CM_AUTOIDLE_PLL CM_AUTOIDLE2
#define OMAP3430ES2_CM_AUTOIDLE2_PLL CM_AUTOIDLE2
#define OMAP3430_CM_CLKSEL1 CM_CLKSEL
#define OMAP3430_CM_CLKSEL1_PLL CM_CLKSEL
#define OMAP3430_CM_CLKSEL2_PLL CM_CLKSEL2
#define OMAP3430_CM_SLEEPDEP CM_CLKSEL2
#define OMAP3430_CM_CLKSEL3 OMAP2_CM_CLKSTCTRL
#define OMAP3430_CM_CLKSTST 0x004c
#define OMAP3430ES2_CM_CLKSEL4 0x004c
#define OMAP3430ES2_CM_CLKSEL5 0x0050
#define OMAP3430_CM_CLKSEL2_EMU 0x0050
#define OMAP3430_CM_CLKSEL3_EMU 0x0054
/* CM_IDLEST bit field values to indicate deasserted IdleReq */
#define OMAP34XX_CM_IDLEST_VAL 1
#ifndef __ASSEMBLER__
extern void omap3xxx_cm_clkdm_enable_hwsup(s16 module, u32 mask);
extern void omap3xxx_cm_clkdm_disable_hwsup(s16 module, u32 mask);
extern void omap3xxx_cm_clkdm_force_sleep(s16 module, u32 mask);
extern void omap3xxx_cm_clkdm_force_wakeup(s16 module, u32 mask);
extern bool omap3xxx_cm_is_clkdm_in_hwsup(s16 module, u32 mask);
extern int omap3xxx_cm_wait_module_ready(s16 prcm_mod, u8 idlest_id,
u8 idlest_shift);
extern void omap3_cm_save_context(void);
extern void omap3_cm_restore_context(void);
#endif
#endif

2
arch/arm/mach-omap2/control.c
View File

@ -23,7 +23,7 @@
#include "cm-regbits-34xx.h"
#include "prm-regbits-34xx.h"
#include "prm3xxx.h"
#include "cm2xxx_3xxx.h"
#include "cm3xxx.h"
#include "sdrc.h"
#include "pm.h"
#include "control.h"

49
arch/arm/mach-omap2/omap_hwmod.c
View File

@ -147,7 +147,8 @@
#include "common.h"
#include "clockdomain.h"
#include "powerdomain.h"
#include "cm2xxx_3xxx.h"
#include "cm2xxx.h"
#include "cm3xxx.h"
#include "cminst44xx.h"
#include "cm33xx.h"
#include "prm3xxx.h"
@ -2668,7 +2669,7 @@ static int __init _alloc_linkspace(struct omap_hwmod_ocp_if **ois)
/* Static functions intended only for use in soc_ops field function pointers */
/**
* _omap2_wait_target_ready - wait for a module to leave slave idle
* _omap2xxx_wait_target_ready - wait for a module to leave slave idle
* @oh: struct omap_hwmod *
*
* Wait for a module @oh to leave slave idle. Returns 0 if the module
@ -2676,7 +2677,7 @@ static int __init _alloc_linkspace(struct omap_hwmod_ocp_if **ois)
* slave idle; otherwise, pass along the return value of the
* appropriate *_cm*_wait_module_ready() function.
*/
static int _omap2_wait_target_ready(struct omap_hwmod *oh)
static int _omap2xxx_wait_target_ready(struct omap_hwmod *oh)
{
if (!oh)
return -EINVAL;
@ -2689,9 +2690,36 @@ static int _omap2_wait_target_ready(struct omap_hwmod *oh)
/* XXX check module SIDLEMODE, hardreset status, enabled clocks */
return omap2_cm_wait_module_ready(oh->prcm.omap2.module_offs,
oh->prcm.omap2.idlest_reg_id,
oh->prcm.omap2.idlest_idle_bit);
return omap2xxx_cm_wait_module_ready(oh->prcm.omap2.module_offs,
oh->prcm.omap2.idlest_reg_id,
oh->prcm.omap2.idlest_idle_bit);
}
/**
* _omap3xxx_wait_target_ready - wait for a module to leave slave idle
* @oh: struct omap_hwmod *
*
* Wait for a module @oh to leave slave idle. Returns 0 if the module
* does not have an IDLEST bit or if the module successfully leaves
* slave idle; otherwise, pass along the return value of the
* appropriate *_cm*_wait_module_ready() function.
*/
static int _omap3xxx_wait_target_ready(struct omap_hwmod *oh)
{
if (!oh)
return -EINVAL;
if (oh->flags & HWMOD_NO_IDLEST)
return 0;
if (!_find_mpu_rt_port(oh))
return 0;
/* XXX check module SIDLEMODE, hardreset status, enabled clocks */
return omap3xxx_cm_wait_module_ready(oh->prcm.omap2.module_offs,
oh->prcm.omap2.idlest_reg_id,
oh->prcm.omap2.idlest_idle_bit);
}
/**
@ -3959,8 +3987,13 @@ int omap_hwmod_pad_route_irq(struct omap_hwmod *oh, int pad_idx, int irq_idx)
*/
void __init omap_hwmod_init(void)
{
if (cpu_is_omap24xx() || cpu_is_omap34xx()) {
soc_ops.wait_target_ready = _omap2_wait_target_ready;
if (cpu_is_omap24xx()) {
soc_ops.wait_target_ready = _omap2xxx_wait_target_ready;
soc_ops.assert_hardreset = _omap2_assert_hardreset;
soc_ops.deassert_hardreset = _omap2_deassert_hardreset;
soc_ops.is_hardreset_asserted = _omap2_is_hardreset_asserted;
} else if (cpu_is_omap34xx()) {
soc_ops.wait_target_ready = _omap3xxx_wait_target_ready;
soc_ops.assert_hardreset = _omap2_assert_hardreset;
soc_ops.deassert_hardreset = _omap2_deassert_hardreset;
soc_ops.is_hardreset_asserted = _omap2_is_hardreset_asserted;

2
arch/arm/mach-omap2/pm24xx.c
View File

@ -43,7 +43,7 @@
#include "common.h"
#include "prm2xxx.h"
#include "prm-regbits-24xx.h"
#include "cm2xxx_3xxx.h"
#include "cm2xxx.h"
#include "cm-regbits-24xx.h"
#include "sdrc.h"
#include "pm.h"

3
arch/arm/mach-omap2/pm34xx.c
View File

@ -44,10 +44,9 @@
#include <plat/dma.h>
#include "common.h"
#include "cm2xxx_3xxx.h"
#include "cm3xxx.h"
#include "cm-regbits-34xx.h"
#include "prm-regbits-34xx.h"
#include "prm3xxx.h"
#include "pm.h"
#include "sdrc.h"

2
arch/arm/mach-omap2/sleep34xx.S
View File

@ -30,7 +30,7 @@
#include "omap34xx.h"
#include "iomap.h"
#include "cm2xxx_3xxx.h"
#include "cm3xxx.h"
#include "prm3xxx.h"
#include "sdrc.h"
#include "control.h"

2
arch/arm/mach-omap2/sram242x.S
View File

@ -35,7 +35,7 @@
#include "soc.h"
#include "iomap.h"
#include "prm2xxx.h"
#include "cm2xxx_3xxx.h"
#include "cm2xxx.h"
#include "sdrc.h"
.text

2
arch/arm/mach-omap2/sram243x.S
View File

@ -35,7 +35,7 @@
#include "soc.h"
#include "iomap.h"
#include "prm2xxx.h"
#include "cm2xxx_3xxx.h"
#include "cm2xxx.h"
#include "sdrc.h"
.text

2
arch/arm/mach-omap2/sram34xx.S
View File

@ -32,7 +32,7 @@
#include "soc.h"
#include "iomap.h"
#include "sdrc.h"
#include "cm2xxx_3xxx.h"
#include "cm3xxx.h"
/*
* This file needs be built unconditionally as ARM to interoperate correctly