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OMAP4: clockdomains: add OMAP4 PRCM data and OMAP4 support
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Add PRCM partition, CM instance register address offset, and clockdomain
register address offset to each OMAP4 struct clockdomain record.  Add OMAP4
clockdomain code to use this new data to access registers properly.

While here, clean up some nearby clockdomain code to allocate auto variables
in my recollection of Linus's preferred style.

The autogeneration scripts have been updated.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Rajendra Nayak <rnayak@ti.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Benoît Cousson <b-cousson@ti.com>
Tested-by: Rajendra Nayak <rnayak@ti.com>
Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
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Paul Walmsley committed Dec 22, 2010
1 parent e4156ee commit bd2122c
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Showing 6 changed files with 266 additions and 72 deletions.
75 changes: 57 additions & 18 deletions arch/arm/mach-omap2/clockdomain.c
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,9 @@
#include "prm2xxx_3xxx.h"
#include "prm-regbits-24xx.h"
#include "cm2xxx_3xxx.h"
#include "cm-regbits-34xx.h"
#include "cminst44xx.h"
#include "prcm44xx.h"

#include <plat/clock.h>
#include <plat/powerdomain.h>
Expand Down Expand Up @@ -247,13 +250,21 @@ static void _enable_hwsup(struct clockdomain *clkdm)

if (cpu_is_omap24xx())
bits = OMAP24XX_CLKSTCTRL_ENABLE_AUTO;
else if (cpu_is_omap34xx() || cpu_is_omap44xx())
else if (cpu_is_omap34xx())
bits = OMAP34XX_CLKSTCTRL_ENABLE_AUTO;
else if (cpu_is_omap44xx())
return omap4_cminst_clkdm_enable_hwsup(clkdm->prcm_partition,
clkdm->cm_inst,
clkdm->clkdm_offs);
else
BUG();

bits = bits << __ffs(clkdm->clktrctrl_mask);

/*
* XXX clkstctrl_reg is known on OMAP2 - this clkdm
* field is not needed
*/
v = __raw_readl(clkdm->clkstctrl_reg);
v &= ~(clkdm->clktrctrl_mask);
v |= bits;
Expand All @@ -275,21 +286,27 @@ static void _disable_hwsup(struct clockdomain *clkdm)
{
u32 bits, v;

if (cpu_is_omap24xx()) {
if (cpu_is_omap24xx())
bits = OMAP24XX_CLKSTCTRL_DISABLE_AUTO;
} else if (cpu_is_omap34xx() || cpu_is_omap44xx()) {
else if (cpu_is_omap34xx())
bits = OMAP34XX_CLKSTCTRL_DISABLE_AUTO;
} else {
else if (cpu_is_omap44xx())
return omap4_cminst_clkdm_disable_hwsup(clkdm->prcm_partition,
clkdm->cm_inst,
clkdm->clkdm_offs);
else
BUG();
}

bits = bits << __ffs(clkdm->clktrctrl_mask);

/*
* XXX clkstctrl_reg is known on OMAP2 - this clkdm
* field is not needed
*/
v = __raw_readl(clkdm->clkstctrl_reg);
v &= ~(clkdm->clktrctrl_mask);
v |= bits;
__raw_writel(v, clkdm->clkstctrl_reg);

}

/* Public functions */
Expand Down Expand Up @@ -727,14 +744,20 @@ int clkdm_clear_all_sleepdeps(struct clockdomain *clkdm)
*/
static int omap2_clkdm_clktrctrl_read(struct clockdomain *clkdm)
{
u32 v;
u32 v = 0;

if (!clkdm)
return -EINVAL;

v = __raw_readl(clkdm->clkstctrl_reg);
v &= clkdm->clktrctrl_mask;
v >>= __ffs(clkdm->clktrctrl_mask);
if (cpu_is_omap24xx() || cpu_is_omap34xx()) {
v = __raw_readl(clkdm->clkstctrl_reg);
v &= clkdm->clktrctrl_mask;
v >>= __ffs(clkdm->clktrctrl_mask);
} else if (cpu_is_omap44xx()) {
pr_warn("OMAP4 clockdomain: missing wakeup/sleep deps\n");
} else {
BUG();
}

return v;
}
Expand All @@ -750,6 +773,8 @@ static int omap2_clkdm_clktrctrl_read(struct clockdomain *clkdm)
*/
int omap2_clkdm_sleep(struct clockdomain *clkdm)
{
u32 bits, v;

if (!clkdm)
return -EINVAL;

Expand All @@ -766,16 +791,22 @@ int omap2_clkdm_sleep(struct clockdomain *clkdm)
omap2_cm_set_mod_reg_bits(OMAP24XX_FORCESTATE_MASK,
clkdm->pwrdm.ptr->prcm_offs, OMAP2_PM_PWSTCTRL);

} else if (cpu_is_omap34xx() || cpu_is_omap44xx()) {
} else if (cpu_is_omap34xx()) {

u32 bits = (OMAP34XX_CLKSTCTRL_FORCE_SLEEP <<
__ffs(clkdm->clktrctrl_mask));
bits = (OMAP34XX_CLKSTCTRL_FORCE_SLEEP <<
__ffs(clkdm->clktrctrl_mask));

u32 v = __raw_readl(clkdm->clkstctrl_reg);
v = __raw_readl(clkdm->clkstctrl_reg);
v &= ~(clkdm->clktrctrl_mask);
v |= bits;
__raw_writel(v, clkdm->clkstctrl_reg);

} else if (cpu_is_omap44xx()) {

omap4_cminst_clkdm_force_sleep(clkdm->prcm_partition,
clkdm->cm_inst,
clkdm->clkdm_offs);

} else {
BUG();
};
Expand All @@ -794,6 +825,8 @@ int omap2_clkdm_sleep(struct clockdomain *clkdm)
*/
int omap2_clkdm_wakeup(struct clockdomain *clkdm)
{
u32 bits, v;

if (!clkdm)
return -EINVAL;

Expand All @@ -810,16 +843,22 @@ int omap2_clkdm_wakeup(struct clockdomain *clkdm)
omap2_cm_clear_mod_reg_bits(OMAP24XX_FORCESTATE_MASK,
clkdm->pwrdm.ptr->prcm_offs, OMAP2_PM_PWSTCTRL);

} else if (cpu_is_omap34xx() || cpu_is_omap44xx()) {
} else if (cpu_is_omap34xx()) {

u32 bits = (OMAP34XX_CLKSTCTRL_FORCE_WAKEUP <<
__ffs(clkdm->clktrctrl_mask));
bits = (OMAP34XX_CLKSTCTRL_FORCE_WAKEUP <<
__ffs(clkdm->clktrctrl_mask));

u32 v = __raw_readl(clkdm->clkstctrl_reg);
v = __raw_readl(clkdm->clkstctrl_reg);
v &= ~(clkdm->clktrctrl_mask);
v |= bits;
__raw_writel(v, clkdm->clkstctrl_reg);

} else if (cpu_is_omap44xx()) {

omap4_cminst_clkdm_force_wakeup(clkdm->prcm_partition,
clkdm->cm_inst,
clkdm->clkdm_offs);

} else {
BUG();
};
Expand Down
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