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Miscellaneous OMAP clock, hwmod, clockdomain, and powerdomain patches

Browse Source 
for 3.6.  Mostly small infrastructure improvements, and preparation
 for OMAP5 and AM33xx code.
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Merge tag 'omap-devel-f-for-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into cleanup-part2

Miscellaneous OMAP clock, hwmod, clockdomain, and powerdomain patches
for 3.6.  Mostly small infrastructure improvements, and preparation
for OMAP5 and AM33xx code.

Conflicts:
	arch/arm/mach-omap2/omap_hwmod.c
	arch/arm/plat-omap/include/plat/omap_hwmod.h
This commit is contained in:
Tony Lindgren 2012-07-05 02:13:04 -07:00
commit ac5b0ea3d0
12 changed files with 192 additions and 114 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
arch/arm/mach-omap2/clockdomain44xx.c
View File

@ -70,7 +70,7 @@ static int omap4_clkdm_clear_all_wkup_sleep_deps(struct clockdomain *clkdm)
static int omap4_clkdm_sleep(struct clockdomain *clkdm)
{
omap4_cminst_clkdm_force_sleep(clkdm->prcm_partition,
omap4_cminst_clkdm_enable_hwsup(clkdm->prcm_partition,
clkdm->cm_inst, clkdm->clkdm_offs);
return 0;
}
@ -90,8 +90,12 @@ static void omap4_clkdm_allow_idle(struct clockdomain *clkdm)
static void omap4_clkdm_deny_idle(struct clockdomain *clkdm)
{
omap4_cminst_clkdm_disable_hwsup(clkdm->prcm_partition,
clkdm->cm_inst, clkdm->clkdm_offs);
if (clkdm->flags & CLKDM_CAN_FORCE_WAKEUP)
omap4_clkdm_wakeup(clkdm);
else
omap4_cminst_clkdm_disable_hwsup(clkdm->prcm_partition,
clkdm->cm_inst,
clkdm->clkdm_offs);
}
static int omap4_clkdm_clk_enable(struct clockdomain *clkdm)

14
arch/arm/mach-omap2/cminst44xx.c
View File

@ -234,20 +234,6 @@ void omap4_cminst_clkdm_disable_hwsup(u8 part, s16 inst, u16 cdoffs)
_clktrctrl_write(OMAP34XX_CLKSTCTRL_DISABLE_AUTO, part, inst, cdoffs);
}
/**
* omap4_cminst_clkdm_force_sleep - try to put a clockdomain into idle
* @part: PRCM partition ID that the clockdomain registers exist in
* @inst: CM instance register offset (*_INST macro)
* @cdoffs: Clockdomain register offset (*_CDOFFS macro)
*
* Put a clockdomain referred to by (@part, @inst, @cdoffs) into idle
* No return value.
*/
void omap4_cminst_clkdm_force_sleep(u8 part, s16 inst, u16 cdoffs)
{
_clktrctrl_write(OMAP34XX_CLKSTCTRL_FORCE_SLEEP, part, inst, cdoffs);
}
/**
* omap4_cminst_clkdm_force_sleep - try to take a clockdomain out of idle
* @part: PRCM partition ID that the clockdomain registers exist in

25
arch/arm/mach-omap2/cminst44xx.h
View File

@ -16,38 +16,13 @@ extern void omap4_cminst_clkdm_enable_hwsup(u8 part, s16 inst, u16 cdoffs);
extern void omap4_cminst_clkdm_disable_hwsup(u8 part, s16 inst, u16 cdoffs);
extern void omap4_cminst_clkdm_force_sleep(u8 part, s16 inst, u16 cdoffs);
extern void omap4_cminst_clkdm_force_wakeup(u8 part, s16 inst, u16 cdoffs);
extern int omap4_cminst_wait_module_ready(u8 part, u16 inst, s16 cdoffs, u16 clkctrl_offs);
# ifdef CONFIG_ARCH_OMAP4
extern int omap4_cminst_wait_module_idle(u8 part, u16 inst, s16 cdoffs,
u16 clkctrl_offs);
extern void omap4_cminst_module_enable(u8 mode, u8 part, u16 inst, s16 cdoffs,
u16 clkctrl_offs);
extern void omap4_cminst_module_disable(u8 part, u16 inst, s16 cdoffs,
u16 clkctrl_offs);
# else
static inline int omap4_cminst_wait_module_idle(u8 part, u16 inst, s16 cdoffs,
u16 clkctrl_offs)
{
return 0;
}
static inline void omap4_cminst_module_enable(u8 mode, u8 part, u16 inst,
s16 cdoffs, u16 clkctrl_offs)
{
}
static inline void omap4_cminst_module_disable(u8 part, u16 inst, s16 cdoffs,
u16 clkctrl_offs)
{
}
# endif
/*
* In an ideal world, we would not export these low-level functions,
* but this will probably take some time to fix properly

1
arch/arm/mach-omap2/control.h
View File

@ -188,6 +188,7 @@
#define OMAP3630_CONTROL_FUSE_OPP120_VDD1 (OMAP2_CONTROL_GENERAL + 0x0120)
#define OMAP3630_CONTROL_FUSE_OPP50_VDD2 (OMAP2_CONTROL_GENERAL + 0x0128)
#define OMAP3630_CONTROL_FUSE_OPP100_VDD2 (OMAP2_CONTROL_GENERAL + 0x012C)
#define OMAP3630_CONTROL_CAMERA_PHY_CTRL (OMAP2_CONTROL_GENERAL + 0x02f0)
/* OMAP44xx control efuse offsets */
#define OMAP44XX_CONTROL_FUSE_IVA_OPP50 0x22C

12
arch/arm/mach-omap2/dpll3xxx.c
View File

@ -135,11 +135,20 @@ static u16 _omap3_dpll_compute_freqsel(struct clk *clk, u8 n)
*/
static int _omap3_noncore_dpll_lock(struct clk *clk)
{
const struct dpll_data *dd;
u8 ai;
int r;
u8 state = 1;
int r = 0;
pr_debug("clock: locking DPLL %s\n", clk->name);
dd = clk->dpll_data;
state <<= __ffs(dd->idlest_mask);
/* Check if already locked */
if ((__raw_readl(dd->idlest_reg) & dd->idlest_mask) == state)
goto done;
ai = omap3_dpll_autoidle_read(clk);
if (ai)
@ -152,6 +161,7 @@ static int _omap3_noncore_dpll_lock(struct clk *clk)
if (ai)
omap3_dpll_allow_idle(clk);
done:
return r;
}

61
arch/arm/mach-omap2/omap_hwmod.c
View File

@ -415,6 +415,49 @@ static int _set_softreset(struct omap_hwmod *oh, u32 *v)
return 0;
}
/**
* _set_dmadisable: set OCP_SYSCONFIG.DMADISABLE bit in @v
* @oh: struct omap_hwmod *
*
* The DMADISABLE bit is a semi-automatic bit present in sysconfig register
* of some modules. When the DMA must perform read/write accesses, the
* DMADISABLE bit is cleared by the hardware. But when the DMA must stop
* for power management, software must set the DMADISABLE bit back to 1.
*
* Set the DMADISABLE bit in @v for hwmod @oh. Returns -EINVAL upon
* error or 0 upon success.
*/
static int _set_dmadisable(struct omap_hwmod *oh)
{
u32 v;
u32 dmadisable_mask;
if (!oh->class->sysc ||
!(oh->class->sysc->sysc_flags & SYSC_HAS_DMADISABLE))
return -EINVAL;
if (!oh->class->sysc->sysc_fields) {
WARN(1, "omap_hwmod: %s: offset struct for sysconfig not provided in class\n", oh->name);
return -EINVAL;
}
/* clocks must be on for this operation */
if (oh->_state != _HWMOD_STATE_ENABLED) {
pr_warn("omap_hwmod: %s: dma can be disabled only from enabled state\n", oh->name);
return -EINVAL;
}
pr_debug("omap_hwmod: %s: setting DMADISABLE\n", oh->name);
v = oh->_sysc_cache;
dmadisable_mask =
(0x1 << oh->class->sysc->sysc_fields->dmadisable_shift);
v |= dmadisable_mask;
_write_sysconfig(v, oh);
return 0;
}
/**
* _set_module_autoidle: set the OCP_SYSCONFIG AUTOIDLE field in @v
* @oh: struct omap_hwmod *
@ -1652,11 +1695,17 @@ static int _ocp_softreset(struct omap_hwmod *oh)
* therefore have no OCP header registers to access. Others (like the
* IVA) have idiosyncratic reset sequences. So for these relatively
* rare cases, custom reset code can be supplied in the struct
* omap_hwmod_class .reset function pointer. Passes along the return
* value from either _ocp_softreset() or the custom reset function -
* these must return -EINVAL if the hwmod cannot be reset this way or
* if the hwmod is in the wrong state, -ETIMEDOUT if the module did
* not reset in time, or 0 upon success.
* omap_hwmod_class .reset function pointer.
*
* _set_dmadisable() is called to set the DMADISABLE bit so that it
* does not prevent idling of the system. This is necessary for cases
* where ROMCODE/BOOTLOADER uses dma and transfers control to the
* kernel without disabling dma.
*
* Passes along the return value from either _ocp_softreset() or the
* custom reset function - these must return -EINVAL if the hwmod
* cannot be reset this way or if the hwmod is in the wrong state,
* -ETIMEDOUT if the module did not reset in time, or 0 upon success.
*/
static int _reset(struct omap_hwmod *oh)
{
@ -1678,6 +1727,8 @@ static int _reset(struct omap_hwmod *oh)
}
}
_set_dmadisable(oh);
/*
* OCP_SYSCONFIG bits need to be reprogrammed after a
* softreset. The _enable() function should be split to avoid

10
arch/arm/mach-omap2/omap_hwmod_common_data.c
View File

@ -47,6 +47,16 @@ struct omap_hwmod_sysc_fields omap_hwmod_sysc_type2 = {
.midle_shift = SYSC_TYPE2_MIDLEMODE_SHIFT,
.sidle_shift = SYSC_TYPE2_SIDLEMODE_SHIFT,
.srst_shift = SYSC_TYPE2_SOFTRESET_SHIFT,
.dmadisable_shift = SYSC_TYPE2_DMADISABLE_SHIFT,
};
/**
* struct omap_hwmod_sysc_type3 - TYPE3 sysconfig scheme.
* Used by some IPs on AM33xx
*/
struct omap_hwmod_sysc_fields omap_hwmod_sysc_type3 = {
.midle_shift = SYSC_TYPE3_MIDLEMODE_SHIFT,
.sidle_shift = SYSC_TYPE3_SIDLEMODE_SHIFT,
};
struct omap_dss_dispc_dev_attr omap2_3_dss_dispc_dev_attr = {

6
arch/arm/mach-omap2/powerdomain.c
View File

@ -526,7 +526,8 @@ int pwrdm_read_next_pwrst(struct powerdomain *pwrdm)
*
* Return the powerdomain @pwrdm's current power state. Returns -EINVAL
* if the powerdomain pointer is null or returns the current power state
* upon success.
* upon success. Note that if the power domain only supports the ON state
* then just return ON as the current state.
*/
int pwrdm_read_pwrst(struct powerdomain *pwrdm)
{
@ -535,6 +536,9 @@ int pwrdm_read_pwrst(struct powerdomain *pwrdm)
if (!pwrdm)
return -EINVAL;
if (pwrdm->pwrsts == PWRSTS_ON)
return PWRDM_POWER_ON;
if (arch_pwrdm && arch_pwrdm->pwrdm_read_pwrst)
ret = arch_pwrdm->pwrdm_read_pwrst(pwrdm);

23
arch/arm/mach-omap2/prcm.c
View File

@ -35,6 +35,7 @@
#include "prm2xxx_3xxx.h"
#include "prm44xx.h"
#include "prminst44xx.h"
#include "cminst44xx.h"
#include "prm-regbits-24xx.h"
#include "prm-regbits-44xx.h"
#include "control.h"
@ -164,3 +165,25 @@ void __init omap2_set_globals_prcm(struct omap_globals *omap2_globals)
omap_cm_base_init();
}
}
/*
* Stubbed functions so that common files continue to build when
* custom builds are used
* XXX These are temporary and should be removed at the earliest possible
* opportunity
*/
int __weak omap4_cminst_wait_module_idle(u8 part, u16 inst, s16 cdoffs,
u16 clkctrl_offs)
{
return 0;
}
void __weak omap4_cminst_module_enable(u8 mode, u8 part, u16 inst,
s16 cdoffs, u16 clkctrl_offs)
{
}
void __weak omap4_cminst_module_disable(u8 part, u16 inst, s16 cdoffs,
u16 clkctrl_offs)
{
}

65
arch/arm/mach-omap2/prm2xxx_3xxx.h
View File

@ -228,68 +228,6 @@
#ifndef __ASSEMBLER__
/*
* Stub omap2xxx/omap3xxx functions so that common files
* continue to build when custom builds are used
*/
#if defined(CONFIG_ARCH_OMAP4) && !(defined(CONFIG_ARCH_OMAP2) || \
defined(CONFIG_ARCH_OMAP3))
static inline u32 omap2_prm_read_mod_reg(s16 module, u16 idx)
{
WARN(1, "prm: omap2xxx/omap3xxx specific function and "
"not suppose to be used on omap4\n");
return 0;
}
static inline void omap2_prm_write_mod_reg(u32 val, s16 module, u16 idx)
{
WARN(1, "prm: omap2xxx/omap3xxx specific function and "
"not suppose to be used on omap4\n");
}
static inline u32 omap2_prm_rmw_mod_reg_bits(u32 mask, u32 bits,
s16 module, s16 idx)
{
WARN(1, "prm: omap2xxx/omap3xxx specific function and "
"not suppose to be used on omap4\n");
return 0;
}
static inline u32 omap2_prm_set_mod_reg_bits(u32 bits, s16 module, s16 idx)
{
WARN(1, "prm: omap2xxx/omap3xxx specific function and "
"not suppose to be used on omap4\n");
return 0;
}
static inline u32 omap2_prm_clear_mod_reg_bits(u32 bits, s16 module, s16 idx)
{
WARN(1, "prm: omap2xxx/omap3xxx specific function and "
"not suppose to be used on omap4\n");
return 0;
}
static inline u32 omap2_prm_read_mod_bits_shift(s16 domain, s16 idx, u32 mask)
{
WARN(1, "prm: omap2xxx/omap3xxx specific function and "
"not suppose to be used on omap4\n");
return 0;
}
static inline int omap2_prm_is_hardreset_asserted(s16 prm_mod, u8 shift)
{
WARN(1, "prm: omap2xxx/omap3xxx specific function and "
"not suppose to be used on omap4\n");
return 0;
}
static inline int omap2_prm_assert_hardreset(s16 prm_mod, u8 shift)
{
WARN(1, "prm: omap2xxx/omap3xxx specific function and "
"not suppose to be used on omap4\n");
return 0;
}
static inline int omap2_prm_deassert_hardreset(s16 prm_mod, u8 rst_shift,
u8 st_shift)
{
WARN(1, "prm: omap2xxx/omap3xxx specific function and "
"not suppose to be used on omap4\n");
return 0;
}
#else
/* Power/reset management domain register get/set */
extern u32 omap2_prm_read_mod_reg(s16 module, u16 idx);
extern void omap2_prm_write_mod_reg(u32 val, s16 module, u16 idx);
@ -320,9 +258,6 @@ extern void omap3xxx_prm_read_pending_irqs(unsigned long *events);
extern void omap3xxx_prm_ocp_barrier(void);
extern void omap3xxx_prm_save_and_clear_irqen(u32 *saved_mask);
extern void omap3xxx_prm_restore_irqen(u32 *saved_mask);
#endif /* CONFIG_ARCH_OMAP4 */
#endif
/*

62
arch/arm/mach-omap2/prm_common.c
View File

@ -319,3 +319,65 @@ int omap_prcm_register_chain_handler(struct omap_prcm_irq_setup *irq_setup)
omap_prcm_irq_cleanup();
return -ENOMEM;
}
/*
* Stubbed functions so that common files continue to build when
* custom builds are used
* XXX These are temporary and should be removed at the earliest possible
* opportunity
*/
u32 __weak omap2_prm_read_mod_reg(s16 module, u16 idx)
{
WARN(1, "prm: omap2xxx/omap3xxx specific function called on non-omap2xxx/3xxx\n");
return 0;
}
void __weak omap2_prm_write_mod_reg(u32 val, s16 module, u16 idx)
{
WARN(1, "prm: omap2xxx/omap3xxx specific function called on non-omap2xxx/3xxx\n");
}
u32 __weak omap2_prm_rmw_mod_reg_bits(u32 mask, u32 bits,
s16 module, s16 idx)
{
WARN(1, "prm: omap2xxx/omap3xxx specific function called on non-omap2xxx/3xxx\n");
return 0;
}
u32 __weak omap2_prm_set_mod_reg_bits(u32 bits, s16 module, s16 idx)
{
WARN(1, "prm: omap2xxx/omap3xxx specific function called on non-omap2xxx/3xxx\n");
return 0;
}
u32 __weak omap2_prm_clear_mod_reg_bits(u32 bits, s16 module, s16 idx)
{
WARN(1, "prm: omap2xxx/omap3xxx specific function called on non-omap2xxx/3xxx\n");
return 0;
}
u32 __weak omap2_prm_read_mod_bits_shift(s16 domain, s16 idx, u32 mask)
{
WARN(1, "prm: omap2xxx/omap3xxx specific function called on non-omap2xxx/3xxx\n");
return 0;
}
int __weak omap2_prm_is_hardreset_asserted(s16 prm_mod, u8 shift)
{
WARN(1, "prm: omap2xxx/omap3xxx specific function called on non-omap2xxx/3xxx\n");
return 0;
}
int __weak omap2_prm_assert_hardreset(s16 prm_mod, u8 shift)
{
WARN(1, "prm: omap2xxx/omap3xxx specific function called on non-omap2xxx/3xxx\n");
return 0;
}
int __weak omap2_prm_deassert_hardreset(s16 prm_mod, u8 rst_shift,
u8 st_shift)
{
WARN(1, "prm: omap2xxx/omap3xxx specific function called on non-omap2xxx/3xxx\n");
return 0;
}

17
arch/arm/plat-omap/include/plat/omap_hwmod.h
View File

@ -41,6 +41,7 @@ struct omap_device;
extern struct omap_hwmod_sysc_fields omap_hwmod_sysc_type1;
extern struct omap_hwmod_sysc_fields omap_hwmod_sysc_type2;
extern struct omap_hwmod_sysc_fields omap_hwmod_sysc_type3;
/*
* OCP SYSCONFIG bit shifts/masks TYPE1. These are for IPs compliant
@ -69,6 +70,17 @@ extern struct omap_hwmod_sysc_fields omap_hwmod_sysc_type2;
#define SYSC_TYPE2_SIDLEMODE_MASK (0x3 << SYSC_TYPE2_SIDLEMODE_SHIFT)
#define SYSC_TYPE2_MIDLEMODE_SHIFT 4
#define SYSC_TYPE2_MIDLEMODE_MASK (0x3 << SYSC_TYPE2_MIDLEMODE_SHIFT)
#define SYSC_TYPE2_DMADISABLE_SHIFT 16
#define SYSC_TYPE2_DMADISABLE_MASK (0x1 << SYSC_TYPE2_DMADISABLE_SHIFT)
/*
* OCP SYSCONFIG bit shifts/masks TYPE3.
* This is applicable for some IPs present in AM33XX
*/
#define SYSC_TYPE3_SIDLEMODE_SHIFT 0
#define SYSC_TYPE3_SIDLEMODE_MASK (0x3 << SYSC_TYPE3_SIDLEMODE_SHIFT)
#define SYSC_TYPE3_MIDLEMODE_SHIFT 2
#define SYSC_TYPE3_MIDLEMODE_MASK (0x3 << SYSC_TYPE3_MIDLEMODE_SHIFT)
/* OCP SYSSTATUS bit shifts/masks */
#define SYSS_RESETDONE_SHIFT 0
@ -283,6 +295,7 @@ struct omap_hwmod_ocp_if {
#define SYSS_HAS_RESET_STATUS (1 << 7)
#define SYSC_NO_CACHE (1 << 8) /* XXX SW flag, belongs elsewhere */
#define SYSC_HAS_RESET_STATUS (1 << 9)
#define SYSC_HAS_DMADISABLE (1 << 10)
/* omap_hwmod_sysconfig.clockact flags */
#define CLOCKACT_TEST_BOTH 0x0
@ -298,6 +311,7 @@ struct omap_hwmod_ocp_if {
* @enwkup_shift: Offset of the enawakeup bit
* @srst_shift: Offset of the softreset bit
* @autoidle_shift: Offset of the autoidle bit
* @dmadisable_shift: Offset of the dmadisable bit
*/
struct omap_hwmod_sysc_fields {
u8 midle_shift;
@ -306,6 +320,7 @@ struct omap_hwmod_sysc_fields {
u8 enwkup_shift;
u8 srst_shift;
u8 autoidle_shift;
u8 dmadisable_shift;
};
/**
@ -374,11 +389,13 @@ struct omap_hwmod_omap2_prcm {
* struct omap_hwmod_omap4_prcm - OMAP4-specific PRCM data
* @clkctrl_reg: PRCM address of the clock control register
* @rstctrl_reg: address of the XXX_RSTCTRL register located in the PRM
* @rstst_reg: (AM33XX only) address of the XXX_RSTST register in the PRM
* @submodule_wkdep_bit: bit shift of the WKDEP range
*/
struct omap_hwmod_omap4_prcm {
u16 clkctrl_offs;
u16 rstctrl_offs;
u16 rstst_offs;
u16 context_offs;
u8 submodule_wkdep_bit;
u8 modulemode;