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Minor OMAP PM and hwmod fixes for v3.7-rc series via

Browse Source 
Kevin Hilman and Paul Walmsley.
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Merge tag 'omap-for-v3.7-rc4/fixes-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes

From Tony Lindgren <tony@atomide.com>:

Minor OMAP PM and hwmod fixes for v3.7-rc series via
Kevin Hilman and Paul Walmsley.

* tag 'omap-for-v3.7-rc4/fixes-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP4: PM: fix regulator name for VDD_MPU
  ARM: OMAP4: hwmod data: do not enable or reset the McPDM during kernel init
  ARM: OMAP2+: hwmod: add flag to prevent hwmod code from touching IP block during init
  ARM: OMAP: hwmod: wait for sysreset complete after enabling hwmod
  ARM: OMAP2+: clockdomain: Fix OMAP4 ISS clk domain to support only SWSUP
  ARM: OMAP2+: PM: add missing newline to VC warning message

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2012-11-12 22:41:39 +01:00
commit c9af5b76ef
6 changed files with 66 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm/mach-omap2/clockdomains44xx_data.c
View File

@ -359,7 +359,7 @@ static struct clockdomain iss_44xx_clkdm = {
.clkdm_offs = OMAP4430_CM2_CAM_CAM_CDOFFS,
.wkdep_srcs = iss_wkup_sleep_deps,
.sleepdep_srcs = iss_wkup_sleep_deps,
.flags = CLKDM_CAN_HWSUP_SWSUP,
.flags = CLKDM_CAN_SWSUP,
};
static struct clockdomain l3_dss_44xx_clkdm = {

63
arch/arm/mach-omap2/omap_hwmod.c
View File

@ -421,6 +421,38 @@ static int _set_softreset(struct omap_hwmod *oh, u32 *v)
return 0;
}
/**
* _wait_softreset_complete - wait for an OCP softreset to complete
* @oh: struct omap_hwmod * to wait on
*
* Wait until the IP block represented by @oh reports that its OCP
* softreset is complete. This can be triggered by software (see
* _ocp_softreset()) or by hardware upon returning from off-mode (one
* example is HSMMC). Waits for up to MAX_MODULE_SOFTRESET_WAIT
* microseconds. Returns the number of microseconds waited.
*/
static int _wait_softreset_complete(struct omap_hwmod *oh)
{
struct omap_hwmod_class_sysconfig *sysc;
u32 softrst_mask;
int c = 0;
sysc = oh->class->sysc;
if (sysc->sysc_flags & SYSS_HAS_RESET_STATUS)
omap_test_timeout((omap_hwmod_read(oh, sysc->syss_offs)
& SYSS_RESETDONE_MASK),
MAX_MODULE_SOFTRESET_WAIT, c);
else if (sysc->sysc_flags & SYSC_HAS_RESET_STATUS) {
softrst_mask = (0x1 << sysc->sysc_fields->srst_shift);
omap_test_timeout(!(omap_hwmod_read(oh, sysc->sysc_offs)
& softrst_mask),
MAX_MODULE_SOFTRESET_WAIT, c);
}
return c;
}
/**
* _set_dmadisable: set OCP_SYSCONFIG.DMADISABLE bit in @v
* @oh: struct omap_hwmod *
@ -1282,6 +1314,18 @@ static void _enable_sysc(struct omap_hwmod *oh)
if (!oh->class->sysc)
return;
/*
* Wait until reset has completed, this is needed as the IP
* block is reset automatically by hardware in some cases
* (off-mode for example), and the drivers require the
* IP to be ready when they access it
*/
if (oh->flags & HWMOD_CONTROL_OPT_CLKS_IN_RESET)
_enable_optional_clocks(oh);
_wait_softreset_complete(oh);
if (oh->flags & HWMOD_CONTROL_OPT_CLKS_IN_RESET)
_disable_optional_clocks(oh);
v = oh->_sysc_cache;
sf = oh->class->sysc->sysc_flags;
@ -1804,7 +1848,7 @@ static int _am33xx_disable_module(struct omap_hwmod *oh)
*/
static int _ocp_softreset(struct omap_hwmod *oh)
{
u32 v, softrst_mask;
u32 v;
int c = 0;
int ret = 0;
@ -1834,19 +1878,7 @@ static int _ocp_softreset(struct omap_hwmod *oh)
if (oh->class->sysc->srst_udelay)
udelay(oh->class->sysc->srst_udelay);
if (oh->class->sysc->sysc_flags & SYSS_HAS_RESET_STATUS)
omap_test_timeout((omap_hwmod_read(oh,
oh->class->sysc->syss_offs)
& SYSS_RESETDONE_MASK),
MAX_MODULE_SOFTRESET_WAIT, c);
else if (oh->class->sysc->sysc_flags & SYSC_HAS_RESET_STATUS) {
softrst_mask = (0x1 << oh->class->sysc->sysc_fields->srst_shift);
omap_test_timeout(!(omap_hwmod_read(oh,
oh->class->sysc->sysc_offs)
& softrst_mask),
MAX_MODULE_SOFTRESET_WAIT, c);
}
c = _wait_softreset_complete(oh);
if (c == MAX_MODULE_SOFTRESET_WAIT)
pr_warning("omap_hwmod: %s: softreset failed (waited %d usec)\n",
oh->name, MAX_MODULE_SOFTRESET_WAIT);
@ -2352,6 +2384,9 @@ static int __init _setup_reset(struct omap_hwmod *oh)
if (oh->_state != _HWMOD_STATE_INITIALIZED)
return -EINVAL;
if (oh->flags & HWMOD_EXT_OPT_MAIN_CLK)
return -EPERM;
if (oh->rst_lines_cnt == 0) {
r = _enable(oh);
if (r) {

8
arch/arm/mach-omap2/omap_hwmod_44xx_data.c
View File

@ -2126,6 +2126,14 @@ static struct omap_hwmod omap44xx_mcpdm_hwmod = {
.name = "mcpdm",
.class = &omap44xx_mcpdm_hwmod_class,
.clkdm_name = "abe_clkdm",
/*
* It's suspected that the McPDM requires an off-chip main
* functional clock, controlled via I2C. This IP block is
* currently reset very early during boot, before I2C is
* available, so it doesn't seem that we have any choice in
* the kernel other than to avoid resetting it.
*/
.flags = HWMOD_EXT_OPT_MAIN_CLK,
.mpu_irqs = omap44xx_mcpdm_irqs,
.sdma_reqs = omap44xx_mcpdm_sdma_reqs,
.main_clk = "mcpdm_fck",

2
arch/arm/mach-omap2/twl-common.c
View File

@ -366,7 +366,7 @@ static struct regulator_init_data omap4_clk32kg_idata = {
};
static struct regulator_consumer_supply omap4_vdd1_supply[] = {
REGULATOR_SUPPLY("vcc", "mpu.0"),
REGULATOR_SUPPLY("vcc", "cpu0"),
};
static struct regulator_consumer_supply omap4_vdd2_supply[] = {

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

@ -264,7 +264,7 @@ static void __init omap_vc_i2c_init(struct voltagedomain *voltdm)
if (initialized) {
if (voltdm->pmic->i2c_high_speed != i2c_high_speed)
pr_warn("%s: I2C config for vdd_%s does not match other channels (%u).",
pr_warn("%s: I2C config for vdd_%s does not match other channels (%u).\n",
__func__, voltdm->name, i2c_high_speed);
return;
}

6
arch/arm/plat-omap/include/plat/omap_hwmod.h
View File

@ -443,6 +443,11 @@ struct omap_hwmod_omap4_prcm {
* in order to complete the reset. Optional clocks will be disabled
* again after the reset.
* HWMOD_16BIT_REG: Module has 16bit registers
* HWMOD_EXT_OPT_MAIN_CLK: The only main functional clock source for
* this IP block comes from an off-chip source and is not always
* enabled. This prevents the hwmod code from being able to
* enable and reset the IP block early. XXX Eventually it should
* be possible to query the clock framework for this information.
*/
#define HWMOD_SWSUP_SIDLE (1 << 0)
#define HWMOD_SWSUP_MSTANDBY (1 << 1)
@ -453,6 +458,7 @@ struct omap_hwmod_omap4_prcm {
#define HWMOD_NO_IDLEST (1 << 6)
#define HWMOD_CONTROL_OPT_CLKS_IN_RESET (1 << 7)
#define HWMOD_16BIT_REG (1 << 8)
#define HWMOD_EXT_OPT_MAIN_CLK (1 << 9)
/*
* omap_hwmod._int_flags definitions