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OMAP: hwmod: allow omap_hwmod_late_init() caller to skip module idle in _setup()

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On kernels that don't use the omap_device_enable() calls to enable
devices, leave all on-chip devices enabled in hwmod _setup().
Otherwise, accesses to those devices are likely to fail, crashing the
system.  It's expected that kernels built without CONFIG_PM_RUNTIME
will be the primary use-case for this.  This functionality is
controlled by adding an extra parameter to omap_hwmod_late_init().

This patch is based on the patch "OMAP: hwmod: don't auto-disable
hwmod when !CONFIG_PM_RUNTIME" by Kevin Hilman
<khilman@deeprootsystems.com>.

Cc: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
This commit is contained in:
Paul Walmsley
2010-07-26 16:34:30 -06:00
parent 848240223c
commit 97d60162f6
3 changed files with 36 additions and 15 deletions
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9
arch/arm/mach-omap2/io.c
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@@ -316,6 +316,8 @@ static int __init _omap2_init_reprogram_sdrc(void)
void __init omap2_init_common_hw(struct omap_sdrc_params *sdrc_cs0,
struct omap_sdrc_params *sdrc_cs1)
{
u8 skip_setup_idle = 0;
pwrdm_init(powerdomains_omap);
clkdm_init(clockdomains_omap, clkdm_autodeps);
if (cpu_is_omap242x())
@@ -340,8 +342,13 @@ void __init omap2_init_common_hw(struct omap_sdrc_params *sdrc_cs0,
pr_err("Could not init clock framework - unknown CPU\n");
omap_serial_early_init();
#ifndef CONFIG_PM_RUNTIME
skip_setup_idle = 1;
#endif
if (cpu_is_omap24xx() || cpu_is_omap34xx()) /* FIXME: OMAP4 */
omap_hwmod_late_init();
omap_hwmod_late_init(skip_setup_idle);
omap_pm_if_init();
if (cpu_is_omap24xx() || cpu_is_omap34xx()) {
omap2_sdrc_init(sdrc_cs0, sdrc_cs1);