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ARM: OMAP2+: PRM: add generic API for asserting hardware reset

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PRM driver now has a generic API for asserting hardware resets. 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 08:39:24 -07:00
committed by Tony Lindgren
parent d9bbe84f67
commit efd44dc35f
10 changed files with 47 additions and 15 deletions
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20
arch/arm/mach-omap2/prm_common.c
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@@ -422,6 +422,26 @@ void prm_clear_context_loss_flags_old(u8 part, s16 inst, u16 idx)
__func__);
}
/**
* omap_prm_assert_hardreset - assert hardreset 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
*
* Asserts a hardware reset line for an IP block.
*/
int omap_prm_assert_hardreset(u8 shift, u8 part, s16 prm_mod, u16 offset)
{
if (!prm_ll_data->assert_hardreset) {
WARN_ONCE(1, "prm: %s: no mapping function defined\n",
__func__);
return -EINVAL;
}
return prm_ll_data->assert_hardreset(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