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linux/arch/arm/mach-omap2/cm3xxx.c
Bhumika Goyal 60af58cde4 ARM: OMAP2+: CM: make cm_ll_data structures as const 
Make these const as they are only getting passed to the functions
cm_register and cm_unregister having the arguments as const.

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2017-12-11 07:40:38 -08:00

682 lines
22 KiB
C
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/*
* OMAP3xxx CM module functions
*
* Copyright (C) 2009 Nokia Corporation
* Copyright (C) 2008-2010, 2012 Texas Instruments, Inc.
* Paul Walmsley
* Rajendra Nayak <rnayak@ti.com>
*
* 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 "prm2xxx_3xxx.h"
#include "cm.h"
#include "cm3xxx.h"
#include "cm-regbits-34xx.h"
#include "clockdomain.h"
static const u8 omap3xxx_cm_idlest_offs[] = {
CM_IDLEST1, CM_IDLEST2, OMAP2430_CM_IDLEST3
};
/*
*
*/
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);
}
static bool omap3xxx_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 == OMAP34XX_CLKSTCTRL_ENABLE_AUTO) ? 1 : 0;
}
static void omap3xxx_cm_clkdm_enable_hwsup(s16 module, u32 mask)
{
_write_clktrctrl(OMAP34XX_CLKSTCTRL_ENABLE_AUTO, module, mask);
}
static void omap3xxx_cm_clkdm_disable_hwsup(s16 module, u32 mask)
{
_write_clktrctrl(OMAP34XX_CLKSTCTRL_DISABLE_AUTO, module, mask);
}
static void omap3xxx_cm_clkdm_force_sleep(s16 module, u32 mask)
{
_write_clktrctrl(OMAP34XX_CLKSTCTRL_FORCE_SLEEP, module, mask);
}
static void omap3xxx_cm_clkdm_force_wakeup(s16 module, u32 mask)
{
_write_clktrctrl(OMAP34XX_CLKSTCTRL_FORCE_WAKEUP, module, mask);
}
/*
*
*/
/**
* omap3xxx_cm_wait_module_ready - wait for a module to leave idle or standby
* @part: PRCM partition, ignored for OMAP3
* @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.
*/
static int omap3xxx_cm_wait_module_ready(u8 part, s16 prcm_mod, u16 idlest_id,
u8 idlest_shift)
{
int ena = 0, i = 0;
u8 cm_idlest_reg;
u32 mask;
if (!idlest_id || (idlest_id > ARRAY_SIZE(omap3xxx_cm_idlest_offs)))
return -EINVAL;
cm_idlest_reg = omap3xxx_cm_idlest_offs[idlest_id - 1];
mask = 1 << idlest_shift;
ena = 0;
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;
}
/**
* omap3xxx_cm_split_idlest_reg - split CM_IDLEST reg addr into its components
* @idlest_reg: CM_IDLEST* virtual address
* @prcm_inst: pointer to an s16 to return the PRCM instance offset
* @idlest_reg_id: pointer to a u8 to return the CM_IDLESTx register ID
*
* XXX This function is only needed until absolute register addresses are
* removed from the OMAP struct clk records.
*/
static int omap3xxx_cm_split_idlest_reg(struct clk_omap_reg *idlest_reg,
s16 *prcm_inst,
u8 *idlest_reg_id)
{
unsigned long offs;
u8 idlest_offs;
int i;
idlest_offs = idlest_reg->offset & 0xff;
for (i = 0; i < ARRAY_SIZE(omap3xxx_cm_idlest_offs); i++) {
if (idlest_offs == omap3xxx_cm_idlest_offs[i]) {
*idlest_reg_id = i + 1;
break;
}
}
if (i == ARRAY_SIZE(omap3xxx_cm_idlest_offs))
return -EINVAL;
offs = idlest_reg->offset;
offs &= 0xff00;
*prcm_inst = offs;
return 0;
}
/* Clockdomain low-level operations */
static int omap3xxx_clkdm_add_sleepdep(struct clockdomain *clkdm1,
struct clockdomain *clkdm2)
{
omap2_cm_set_mod_reg_bits((1 << clkdm2->dep_bit),
clkdm1->pwrdm.ptr->prcm_offs,
OMAP3430_CM_SLEEPDEP);
return 0;
}
static int omap3xxx_clkdm_del_sleepdep(struct clockdomain *clkdm1,
struct clockdomain *clkdm2)
{
omap2_cm_clear_mod_reg_bits((1 << clkdm2->dep_bit),
clkdm1->pwrdm.ptr->prcm_offs,
OMAP3430_CM_SLEEPDEP);
return 0;
}
static int omap3xxx_clkdm_read_sleepdep(struct clockdomain *clkdm1,
struct clockdomain *clkdm2)
{
return omap2_cm_read_mod_bits_shift(clkdm1->pwrdm.ptr->prcm_offs,
OMAP3430_CM_SLEEPDEP,
(1 << clkdm2->dep_bit));
}
static int omap3xxx_clkdm_clear_all_sleepdeps(struct clockdomain *clkdm)
{
struct clkdm_dep *cd;
u32 mask = 0;
for (cd = clkdm->sleepdep_srcs; cd && cd->clkdm_name; cd++) {
if (!cd->clkdm)
continue; /* only happens if data is erroneous */
mask |= 1 << cd->clkdm->dep_bit;
cd->sleepdep_usecount = 0;
}
omap2_cm_clear_mod_reg_bits(mask, clkdm->pwrdm.ptr->prcm_offs,
OMAP3430_CM_SLEEPDEP);
return 0;
}
static int omap3xxx_clkdm_sleep(struct clockdomain *clkdm)
{
omap3xxx_cm_clkdm_force_sleep(clkdm->pwrdm.ptr->prcm_offs,
clkdm->clktrctrl_mask);
return 0;
}
static int omap3xxx_clkdm_wakeup(struct clockdomain *clkdm)
{
omap3xxx_cm_clkdm_force_wakeup(clkdm->pwrdm.ptr->prcm_offs,
clkdm->clktrctrl_mask);
return 0;
}
static void omap3xxx_clkdm_allow_idle(struct clockdomain *clkdm)
{
if (clkdm->usecount > 0)
clkdm_add_autodeps(clkdm);
omap3xxx_cm_clkdm_enable_hwsup(clkdm->pwrdm.ptr->prcm_offs,
clkdm->clktrctrl_mask);
}
static void omap3xxx_clkdm_deny_idle(struct clockdomain *clkdm)
{
omap3xxx_cm_clkdm_disable_hwsup(clkdm->pwrdm.ptr->prcm_offs,
clkdm->clktrctrl_mask);
if (clkdm->usecount > 0)
clkdm_del_autodeps(clkdm);
}
static int omap3xxx_clkdm_clk_enable(struct clockdomain *clkdm)
{
bool hwsup = false;
if (!clkdm->clktrctrl_mask)
return 0;
/*
* The CLKDM_MISSING_IDLE_REPORTING flag documentation has
* more details on the unpleasant problem this is working
* around
*/
if ((clkdm->flags & CLKDM_MISSING_IDLE_REPORTING) &&
(clkdm->flags & CLKDM_CAN_FORCE_WAKEUP)) {
omap3xxx_clkdm_wakeup(clkdm);
return 0;
}
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 */
omap3xxx_cm_clkdm_disable_hwsup(clkdm->pwrdm.ptr->prcm_offs,
clkdm->clktrctrl_mask);
clkdm_add_autodeps(clkdm);
omap3xxx_cm_clkdm_enable_hwsup(clkdm->pwrdm.ptr->prcm_offs,
clkdm->clktrctrl_mask);
} else {
if (clkdm->flags & CLKDM_CAN_FORCE_WAKEUP)
omap3xxx_clkdm_wakeup(clkdm);
}
return 0;
}
static int omap3xxx_clkdm_clk_disable(struct clockdomain *clkdm)
{
bool hwsup = false;
if (!clkdm->clktrctrl_mask)
return 0;
/*
* The CLKDM_MISSING_IDLE_REPORTING flag documentation has
* more details on the unpleasant problem this is working
* around
*/
if (clkdm->flags & CLKDM_MISSING_IDLE_REPORTING &&
!(clkdm->flags & CLKDM_CAN_FORCE_SLEEP)) {
omap3xxx_cm_clkdm_enable_hwsup(clkdm->pwrdm.ptr->prcm_offs,
clkdm->clktrctrl_mask);
return 0;
}
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 */
omap3xxx_cm_clkdm_disable_hwsup(clkdm->pwrdm.ptr->prcm_offs,
clkdm->clktrctrl_mask);
clkdm_del_autodeps(clkdm);
omap3xxx_cm_clkdm_enable_hwsup(clkdm->pwrdm.ptr->prcm_offs,
clkdm->clktrctrl_mask);
} else {
if (clkdm->flags & CLKDM_CAN_FORCE_SLEEP)
omap3xxx_clkdm_sleep(clkdm);
}
return 0;
}
struct clkdm_ops omap3_clkdm_operations = {
.clkdm_add_wkdep = omap2_clkdm_add_wkdep,
.clkdm_del_wkdep = omap2_clkdm_del_wkdep,
.clkdm_read_wkdep = omap2_clkdm_read_wkdep,
.clkdm_clear_all_wkdeps = omap2_clkdm_clear_all_wkdeps,
.clkdm_add_sleepdep = omap3xxx_clkdm_add_sleepdep,
.clkdm_del_sleepdep = omap3xxx_clkdm_del_sleepdep,
.clkdm_read_sleepdep = omap3xxx_clkdm_read_sleepdep,
.clkdm_clear_all_sleepdeps = omap3xxx_clkdm_clear_all_sleepdeps,
.clkdm_sleep = omap3xxx_clkdm_sleep,
.clkdm_wakeup = omap3xxx_clkdm_wakeup,
.clkdm_allow_idle = omap3xxx_clkdm_allow_idle,
.clkdm_deny_idle = omap3xxx_clkdm_deny_idle,
.clkdm_clk_enable = omap3xxx_clkdm_clk_enable,
.clkdm_clk_disable = omap3xxx_clkdm_clk_disable,
};
/*
* Context save/restore code - OMAP3 only
*/
struct omap3_cm_regs {
u32 iva2_cm_clksel1;
u32 iva2_cm_clksel2;
u32 cm_sysconfig;
u32 sgx_cm_clksel;
u32 dss_cm_clksel;
u32 cam_cm_clksel;
u32 per_cm_clksel;
u32 emu_cm_clksel;
u32 emu_cm_clkstctrl;
u32 pll_cm_autoidle;
u32 pll_cm_autoidle2;
u32 pll_cm_clksel4;
u32 pll_cm_clksel5;
u32 pll_cm_clken2;
u32 cm_polctrl;
u32 iva2_cm_fclken;
u32 iva2_cm_clken_pll;
u32 core_cm_fclken1;
u32 core_cm_fclken3;
u32 sgx_cm_fclken;
u32 wkup_cm_fclken;
u32 dss_cm_fclken;
u32 cam_cm_fclken;
u32 per_cm_fclken;
u32 usbhost_cm_fclken;
u32 core_cm_iclken1;
u32 core_cm_iclken2;
u32 core_cm_iclken3;
u32 sgx_cm_iclken;
u32 wkup_cm_iclken;
u32 dss_cm_iclken;
u32 cam_cm_iclken;
u32 per_cm_iclken;
u32 usbhost_cm_iclken;
u32 iva2_cm_autoidle2;
u32 mpu_cm_autoidle2;
u32 iva2_cm_clkstctrl;
u32 mpu_cm_clkstctrl;
u32 core_cm_clkstctrl;
u32 sgx_cm_clkstctrl;
u32 dss_cm_clkstctrl;
u32 cam_cm_clkstctrl;
u32 per_cm_clkstctrl;
u32 neon_cm_clkstctrl;
u32 usbhost_cm_clkstctrl;
u32 core_cm_autoidle1;
u32 core_cm_autoidle2;
u32 core_cm_autoidle3;
u32 wkup_cm_autoidle;
u32 dss_cm_autoidle;
u32 cam_cm_autoidle;
u32 per_cm_autoidle;
u32 usbhost_cm_autoidle;
u32 sgx_cm_sleepdep;
u32 dss_cm_sleepdep;
u32 cam_cm_sleepdep;
u32 per_cm_sleepdep;
u32 usbhost_cm_sleepdep;
u32 cm_clkout_ctrl;
};
static struct omap3_cm_regs cm_context;
void omap3_cm_save_context(void)
{
cm_context.iva2_cm_clksel1 =
omap2_cm_read_mod_reg(OMAP3430_IVA2_MOD, CM_CLKSEL1);
cm_context.iva2_cm_clksel2 =
omap2_cm_read_mod_reg(OMAP3430_IVA2_MOD, CM_CLKSEL2);
cm_context.cm_sysconfig =
omap2_cm_read_mod_reg(OCP_MOD, OMAP3430_CM_SYSCONFIG);
cm_context.sgx_cm_clksel =
omap2_cm_read_mod_reg(OMAP3430ES2_SGX_MOD, CM_CLKSEL);
cm_context.dss_cm_clksel =
omap2_cm_read_mod_reg(OMAP3430_DSS_MOD, CM_CLKSEL);
cm_context.cam_cm_clksel =
omap2_cm_read_mod_reg(OMAP3430_CAM_MOD, CM_CLKSEL);
cm_context.per_cm_clksel =
omap2_cm_read_mod_reg(OMAP3430_PER_MOD, CM_CLKSEL);
cm_context.emu_cm_clksel =
omap2_cm_read_mod_reg(OMAP3430_EMU_MOD, CM_CLKSEL1);
cm_context.emu_cm_clkstctrl =
omap2_cm_read_mod_reg(OMAP3430_EMU_MOD, OMAP2_CM_CLKSTCTRL);
/*
* As per erratum i671, ROM code does not respect the PER DPLL
* programming scheme if CM_AUTOIDLE_PLL.AUTO_PERIPH_DPLL == 1.
* In this case, even though this register has been saved in
* scratchpad contents, we need to restore AUTO_PERIPH_DPLL
* by ourselves. So, we need to save it anyway.
*/
cm_context.pll_cm_autoidle =
omap2_cm_read_mod_reg(PLL_MOD, CM_AUTOIDLE);
cm_context.pll_cm_autoidle2 =
omap2_cm_read_mod_reg(PLL_MOD, CM_AUTOIDLE2);
cm_context.pll_cm_clksel4 =
omap2_cm_read_mod_reg(PLL_MOD, OMAP3430ES2_CM_CLKSEL4);
cm_context.pll_cm_clksel5 =
omap2_cm_read_mod_reg(PLL_MOD, OMAP3430ES2_CM_CLKSEL5);
cm_context.pll_cm_clken2 =
omap2_cm_read_mod_reg(PLL_MOD, OMAP3430ES2_CM_CLKEN2);
cm_context.cm_polctrl =
omap2_cm_read_mod_reg(OCP_MOD, OMAP3430_CM_POLCTRL);
cm_context.iva2_cm_fclken =
omap2_cm_read_mod_reg(OMAP3430_IVA2_MOD, CM_FCLKEN);
cm_context.iva2_cm_clken_pll =
omap2_cm_read_mod_reg(OMAP3430_IVA2_MOD, OMAP3430_CM_CLKEN_PLL);
cm_context.core_cm_fclken1 =
omap2_cm_read_mod_reg(CORE_MOD, CM_FCLKEN1);
cm_context.core_cm_fclken3 =
omap2_cm_read_mod_reg(CORE_MOD, OMAP3430ES2_CM_FCLKEN3);
cm_context.sgx_cm_fclken =
omap2_cm_read_mod_reg(OMAP3430ES2_SGX_MOD, CM_FCLKEN);
cm_context.wkup_cm_fclken =
omap2_cm_read_mod_reg(WKUP_MOD, CM_FCLKEN);
cm_context.dss_cm_fclken =
omap2_cm_read_mod_reg(OMAP3430_DSS_MOD, CM_FCLKEN);
cm_context.cam_cm_fclken =
omap2_cm_read_mod_reg(OMAP3430_CAM_MOD, CM_FCLKEN);
cm_context.per_cm_fclken =
omap2_cm_read_mod_reg(OMAP3430_PER_MOD, CM_FCLKEN);
cm_context.usbhost_cm_fclken =
omap2_cm_read_mod_reg(OMAP3430ES2_USBHOST_MOD, CM_FCLKEN);
cm_context.core_cm_iclken1 =
omap2_cm_read_mod_reg(CORE_MOD, CM_ICLKEN1);
cm_context.core_cm_iclken2 =
omap2_cm_read_mod_reg(CORE_MOD, CM_ICLKEN2);
cm_context.core_cm_iclken3 =
omap2_cm_read_mod_reg(CORE_MOD, CM_ICLKEN3);
cm_context.sgx_cm_iclken =
omap2_cm_read_mod_reg(OMAP3430ES2_SGX_MOD, CM_ICLKEN);
cm_context.wkup_cm_iclken =
omap2_cm_read_mod_reg(WKUP_MOD, CM_ICLKEN);
cm_context.dss_cm_iclken =
omap2_cm_read_mod_reg(OMAP3430_DSS_MOD, CM_ICLKEN);
cm_context.cam_cm_iclken =
omap2_cm_read_mod_reg(OMAP3430_CAM_MOD, CM_ICLKEN);
cm_context.per_cm_iclken =
omap2_cm_read_mod_reg(OMAP3430_PER_MOD, CM_ICLKEN);
cm_context.usbhost_cm_iclken =
omap2_cm_read_mod_reg(OMAP3430ES2_USBHOST_MOD, CM_ICLKEN);
cm_context.iva2_cm_autoidle2 =
omap2_cm_read_mod_reg(OMAP3430_IVA2_MOD, CM_AUTOIDLE2);
cm_context.mpu_cm_autoidle2 =
omap2_cm_read_mod_reg(MPU_MOD, CM_AUTOIDLE2);
cm_context.iva2_cm_clkstctrl =
omap2_cm_read_mod_reg(OMAP3430_IVA2_MOD, OMAP2_CM_CLKSTCTRL);
cm_context.mpu_cm_clkstctrl =
omap2_cm_read_mod_reg(MPU_MOD, OMAP2_CM_CLKSTCTRL);
cm_context.core_cm_clkstctrl =
omap2_cm_read_mod_reg(CORE_MOD, OMAP2_CM_CLKSTCTRL);
cm_context.sgx_cm_clkstctrl =
omap2_cm_read_mod_reg(OMAP3430ES2_SGX_MOD, OMAP2_CM_CLKSTCTRL);
cm_context.dss_cm_clkstctrl =
omap2_cm_read_mod_reg(OMAP3430_DSS_MOD, OMAP2_CM_CLKSTCTRL);
cm_context.cam_cm_clkstctrl =
omap2_cm_read_mod_reg(OMAP3430_CAM_MOD, OMAP2_CM_CLKSTCTRL);
cm_context.per_cm_clkstctrl =
omap2_cm_read_mod_reg(OMAP3430_PER_MOD, OMAP2_CM_CLKSTCTRL);
cm_context.neon_cm_clkstctrl =
omap2_cm_read_mod_reg(OMAP3430_NEON_MOD, OMAP2_CM_CLKSTCTRL);
cm_context.usbhost_cm_clkstctrl =
omap2_cm_read_mod_reg(OMAP3430ES2_USBHOST_MOD,
OMAP2_CM_CLKSTCTRL);
cm_context.core_cm_autoidle1 =
omap2_cm_read_mod_reg(CORE_MOD, CM_AUTOIDLE1);
cm_context.core_cm_autoidle2 =
omap2_cm_read_mod_reg(CORE_MOD, CM_AUTOIDLE2);
cm_context.core_cm_autoidle3 =
omap2_cm_read_mod_reg(CORE_MOD, CM_AUTOIDLE3);
cm_context.wkup_cm_autoidle =
omap2_cm_read_mod_reg(WKUP_MOD, CM_AUTOIDLE);
cm_context.dss_cm_autoidle =
omap2_cm_read_mod_reg(OMAP3430_DSS_MOD, CM_AUTOIDLE);
cm_context.cam_cm_autoidle =
omap2_cm_read_mod_reg(OMAP3430_CAM_MOD, CM_AUTOIDLE);
cm_context.per_cm_autoidle =
omap2_cm_read_mod_reg(OMAP3430_PER_MOD, CM_AUTOIDLE);
cm_context.usbhost_cm_autoidle =
omap2_cm_read_mod_reg(OMAP3430ES2_USBHOST_MOD, CM_AUTOIDLE);
cm_context.sgx_cm_sleepdep =
omap2_cm_read_mod_reg(OMAP3430ES2_SGX_MOD,
OMAP3430_CM_SLEEPDEP);
cm_context.dss_cm_sleepdep =
omap2_cm_read_mod_reg(OMAP3430_DSS_MOD, OMAP3430_CM_SLEEPDEP);
cm_context.cam_cm_sleepdep =
omap2_cm_read_mod_reg(OMAP3430_CAM_MOD, OMAP3430_CM_SLEEPDEP);
cm_context.per_cm_sleepdep =
omap2_cm_read_mod_reg(OMAP3430_PER_MOD, OMAP3430_CM_SLEEPDEP);
cm_context.usbhost_cm_sleepdep =
omap2_cm_read_mod_reg(OMAP3430ES2_USBHOST_MOD,
OMAP3430_CM_SLEEPDEP);
cm_context.cm_clkout_ctrl =
omap2_cm_read_mod_reg(OMAP3430_CCR_MOD,
OMAP3_CM_CLKOUT_CTRL_OFFSET);
}
void omap3_cm_restore_context(void)
{
omap2_cm_write_mod_reg(cm_context.iva2_cm_clksel1, OMAP3430_IVA2_MOD,
CM_CLKSEL1);
omap2_cm_write_mod_reg(cm_context.iva2_cm_clksel2, OMAP3430_IVA2_MOD,
CM_CLKSEL2);
omap2_cm_write_mod_reg(cm_context.cm_sysconfig, OCP_MOD,
OMAP3430_CM_SYSCONFIG);
omap2_cm_write_mod_reg(cm_context.sgx_cm_clksel, OMAP3430ES2_SGX_MOD,
CM_CLKSEL);
omap2_cm_write_mod_reg(cm_context.dss_cm_clksel, OMAP3430_DSS_MOD,
CM_CLKSEL);
omap2_cm_write_mod_reg(cm_context.cam_cm_clksel, OMAP3430_CAM_MOD,
CM_CLKSEL);
omap2_cm_write_mod_reg(cm_context.per_cm_clksel, OMAP3430_PER_MOD,
CM_CLKSEL);
omap2_cm_write_mod_reg(cm_context.emu_cm_clksel, OMAP3430_EMU_MOD,
CM_CLKSEL1);
omap2_cm_write_mod_reg(cm_context.emu_cm_clkstctrl, OMAP3430_EMU_MOD,
OMAP2_CM_CLKSTCTRL);
/*
* As per erratum i671, ROM code does not respect the PER DPLL
* programming scheme if CM_AUTOIDLE_PLL.AUTO_PERIPH_DPLL == 1.
* In this case, we need to restore AUTO_PERIPH_DPLL by ourselves.
*/
omap2_cm_write_mod_reg(cm_context.pll_cm_autoidle, PLL_MOD,
CM_AUTOIDLE);
omap2_cm_write_mod_reg(cm_context.pll_cm_autoidle2, PLL_MOD,
CM_AUTOIDLE2);
omap2_cm_write_mod_reg(cm_context.pll_cm_clksel4, PLL_MOD,
OMAP3430ES2_CM_CLKSEL4);
omap2_cm_write_mod_reg(cm_context.pll_cm_clksel5, PLL_MOD,
OMAP3430ES2_CM_CLKSEL5);
omap2_cm_write_mod_reg(cm_context.pll_cm_clken2, PLL_MOD,
OMAP3430ES2_CM_CLKEN2);
omap2_cm_write_mod_reg(cm_context.cm_polctrl, OCP_MOD,
OMAP3430_CM_POLCTRL);
omap2_cm_write_mod_reg(cm_context.iva2_cm_fclken, OMAP3430_IVA2_MOD,
CM_FCLKEN);
omap2_cm_write_mod_reg(cm_context.iva2_cm_clken_pll, OMAP3430_IVA2_MOD,
OMAP3430_CM_CLKEN_PLL);
omap2_cm_write_mod_reg(cm_context.core_cm_fclken1, CORE_MOD,
CM_FCLKEN1);
omap2_cm_write_mod_reg(cm_context.core_cm_fclken3, CORE_MOD,
OMAP3430ES2_CM_FCLKEN3);
omap2_cm_write_mod_reg(cm_context.sgx_cm_fclken, OMAP3430ES2_SGX_MOD,
CM_FCLKEN);
omap2_cm_write_mod_reg(cm_context.wkup_cm_fclken, WKUP_MOD, CM_FCLKEN);
omap2_cm_write_mod_reg(cm_context.dss_cm_fclken, OMAP3430_DSS_MOD,
CM_FCLKEN);
omap2_cm_write_mod_reg(cm_context.cam_cm_fclken, OMAP3430_CAM_MOD,
CM_FCLKEN);
omap2_cm_write_mod_reg(cm_context.per_cm_fclken, OMAP3430_PER_MOD,
CM_FCLKEN);
omap2_cm_write_mod_reg(cm_context.usbhost_cm_fclken,
OMAP3430ES2_USBHOST_MOD, CM_FCLKEN);
omap2_cm_write_mod_reg(cm_context.core_cm_iclken1, CORE_MOD,
CM_ICLKEN1);
omap2_cm_write_mod_reg(cm_context.core_cm_iclken2, CORE_MOD,
CM_ICLKEN2);
omap2_cm_write_mod_reg(cm_context.core_cm_iclken3, CORE_MOD,
CM_ICLKEN3);
omap2_cm_write_mod_reg(cm_context.sgx_cm_iclken, OMAP3430ES2_SGX_MOD,
CM_ICLKEN);
omap2_cm_write_mod_reg(cm_context.wkup_cm_iclken, WKUP_MOD, CM_ICLKEN);
omap2_cm_write_mod_reg(cm_context.dss_cm_iclken, OMAP3430_DSS_MOD,
CM_ICLKEN);
omap2_cm_write_mod_reg(cm_context.cam_cm_iclken, OMAP3430_CAM_MOD,
CM_ICLKEN);
omap2_cm_write_mod_reg(cm_context.per_cm_iclken, OMAP3430_PER_MOD,
CM_ICLKEN);
omap2_cm_write_mod_reg(cm_context.usbhost_cm_iclken,
OMAP3430ES2_USBHOST_MOD, CM_ICLKEN);
omap2_cm_write_mod_reg(cm_context.iva2_cm_autoidle2, OMAP3430_IVA2_MOD,
CM_AUTOIDLE2);
omap2_cm_write_mod_reg(cm_context.mpu_cm_autoidle2, MPU_MOD,
CM_AUTOIDLE2);
omap2_cm_write_mod_reg(cm_context.iva2_cm_clkstctrl, OMAP3430_IVA2_MOD,
OMAP2_CM_CLKSTCTRL);
omap2_cm_write_mod_reg(cm_context.mpu_cm_clkstctrl, MPU_MOD,
OMAP2_CM_CLKSTCTRL);
omap2_cm_write_mod_reg(cm_context.core_cm_clkstctrl, CORE_MOD,
OMAP2_CM_CLKSTCTRL);
omap2_cm_write_mod_reg(cm_context.sgx_cm_clkstctrl, OMAP3430ES2_SGX_MOD,
OMAP2_CM_CLKSTCTRL);
omap2_cm_write_mod_reg(cm_context.dss_cm_clkstctrl, OMAP3430_DSS_MOD,
OMAP2_CM_CLKSTCTRL);
omap2_cm_write_mod_reg(cm_context.cam_cm_clkstctrl, OMAP3430_CAM_MOD,
OMAP2_CM_CLKSTCTRL);
omap2_cm_write_mod_reg(cm_context.per_cm_clkstctrl, OMAP3430_PER_MOD,
OMAP2_CM_CLKSTCTRL);
omap2_cm_write_mod_reg(cm_context.neon_cm_clkstctrl, OMAP3430_NEON_MOD,
OMAP2_CM_CLKSTCTRL);
omap2_cm_write_mod_reg(cm_context.usbhost_cm_clkstctrl,
OMAP3430ES2_USBHOST_MOD, OMAP2_CM_CLKSTCTRL);
omap2_cm_write_mod_reg(cm_context.core_cm_autoidle1, CORE_MOD,
CM_AUTOIDLE1);
omap2_cm_write_mod_reg(cm_context.core_cm_autoidle2, CORE_MOD,
CM_AUTOIDLE2);
omap2_cm_write_mod_reg(cm_context.core_cm_autoidle3, CORE_MOD,
CM_AUTOIDLE3);
omap2_cm_write_mod_reg(cm_context.wkup_cm_autoidle, WKUP_MOD,
CM_AUTOIDLE);
omap2_cm_write_mod_reg(cm_context.dss_cm_autoidle, OMAP3430_DSS_MOD,
CM_AUTOIDLE);
omap2_cm_write_mod_reg(cm_context.cam_cm_autoidle, OMAP3430_CAM_MOD,
CM_AUTOIDLE);
omap2_cm_write_mod_reg(cm_context.per_cm_autoidle, OMAP3430_PER_MOD,
CM_AUTOIDLE);
omap2_cm_write_mod_reg(cm_context.usbhost_cm_autoidle,
OMAP3430ES2_USBHOST_MOD, CM_AUTOIDLE);
omap2_cm_write_mod_reg(cm_context.sgx_cm_sleepdep, OMAP3430ES2_SGX_MOD,
OMAP3430_CM_SLEEPDEP);
omap2_cm_write_mod_reg(cm_context.dss_cm_sleepdep, OMAP3430_DSS_MOD,
OMAP3430_CM_SLEEPDEP);
omap2_cm_write_mod_reg(cm_context.cam_cm_sleepdep, OMAP3430_CAM_MOD,
OMAP3430_CM_SLEEPDEP);
omap2_cm_write_mod_reg(cm_context.per_cm_sleepdep, OMAP3430_PER_MOD,
OMAP3430_CM_SLEEPDEP);
omap2_cm_write_mod_reg(cm_context.usbhost_cm_sleepdep,
OMAP3430ES2_USBHOST_MOD, OMAP3430_CM_SLEEPDEP);
omap2_cm_write_mod_reg(cm_context.cm_clkout_ctrl, OMAP3430_CCR_MOD,
OMAP3_CM_CLKOUT_CTRL_OFFSET);
}
void omap3_cm_save_scratchpad_contents(u32 *ptr)
{
*ptr++ = omap2_cm_read_mod_reg(CORE_MOD, CM_CLKSEL);
*ptr++ = omap2_cm_read_mod_reg(WKUP_MOD, CM_CLKSEL);
*ptr++ = omap2_cm_read_mod_reg(PLL_MOD, CM_CLKEN);
/*
* As per erratum i671, ROM code does not respect the PER DPLL
* programming scheme if CM_AUTOIDLE_PLL..AUTO_PERIPH_DPLL == 1.
* Then, in any case, clear these bits to avoid extra latencies.
*/
*ptr++ = omap2_cm_read_mod_reg(PLL_MOD, CM_AUTOIDLE) &
~OMAP3430_AUTO_PERIPH_DPLL_MASK;
*ptr++ = omap2_cm_read_mod_reg(PLL_MOD, OMAP3430_CM_CLKSEL1_PLL);
*ptr++ = omap2_cm_read_mod_reg(PLL_MOD, OMAP3430_CM_CLKSEL2_PLL);
*ptr++ = omap2_cm_read_mod_reg(PLL_MOD, OMAP3430_CM_CLKSEL3);
*ptr++ = omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_CLKEN_PLL);
*ptr++ = omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_AUTOIDLE_PLL);
*ptr++ = omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_CLKSEL1_PLL);
*ptr++ = omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_CLKSEL2_PLL);
}
/*
*
*/
static const struct cm_ll_data omap3xxx_cm_ll_data = {
.split_idlest_reg = &omap3xxx_cm_split_idlest_reg,
.wait_module_ready = &omap3xxx_cm_wait_module_ready,
};
int __init omap3xxx_cm_init(const struct omap_prcm_init_data *data)
{
omap2_clk_legacy_provider_init(TI_CLKM_CM, cm_base.va +
OMAP3430_IVA2_MOD);
return cm_register(&omap3xxx_cm_ll_data);
}
static void __exit omap3xxx_cm_exit(void)
{
cm_unregister(&omap3xxx_cm_ll_data);
}
__exitcall(omap3xxx_cm_exit);
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