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ARM: OMAP2+: PRM: add generic API for checking hardreset status

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PRM driver now has a generic API for checking hardreset status. SoC
specific support functions are registered through the prm_ll_data.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Acked-by: Paul Walmsley <paul@pwsan.com>
Tested-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Tero Kristo
2014-10-27 08:39:25 -07:00
committed by Tony Lindgren
parent 37fb59d7e0
commit 1bc28b3472
10 changed files with 45 additions and 17 deletions
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20
arch/arm/mach-omap2/prm_common.c
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@@ -466,6 +466,26 @@ int omap_prm_deassert_hardreset(u8 shift, u8 st_shift, u8 part, s16 prm_mod,
offset, st_offset);
}
/**
* omap_prm_is_hardreset_asserted - check the hardreset status for an IP block
* @shift: register bit shift corresponding to the reset line
* @part: PRM partition
* @prm_mod: PRM submodule base or instance offset
* @offset: register offset
*
* Checks if a hardware reset line for an IP block is enabled or not.
*/
int omap_prm_is_hardreset_asserted(u8 shift, u8 part, s16 prm_mod, u16 offset)
{
if (!prm_ll_data->is_hardreset_asserted) {
WARN_ONCE(1, "prm: %s: no mapping function defined\n",
__func__);
return -EINVAL;
}
return prm_ll_data->is_hardreset_asserted(shift, part, prm_mod, offset);
}
/**
* prm_register - register per-SoC low-level data with the PRM
* @pld: low-level per-SoC OMAP PRM data & function pointers to register