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author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-01-12 23:07:46 +0100 |
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committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-01-12 23:07:46 +0100 |
commit | 0a87a2db485a1456b7427914969c0e8195a1bbda (patch) | |
tree | 8d0186672af22c6ee76118c471881cd66a36502d /arch/arm/mach-omap2/prm_common.c | |
parent | drm/i915: Reserve shadow batch VMA analogue to others (diff) | |
parent | drm/i915: remove unused power_well/get_cdclk_freq api (diff) | |
download | linux-dev-0a87a2db485a1456b7427914969c0e8195a1bbda.tar.xz linux-dev-0a87a2db485a1456b7427914969c0e8195a1bbda.zip |
Merge tag 'topic/i915-hda-componentized-2015-01-12' into drm-intel-next-queued
Conflicts:
drivers/gpu/drm/i915/intel_runtime_pm.c
Separate branch so that Takashi can also pull just this refactoring
into sound-next.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Diffstat (limited to 'arch/arm/mach-omap2/prm_common.c')
-rw-r--r-- | arch/arm/mach-omap2/prm_common.c | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/prm_common.c b/arch/arm/mach-omap2/prm_common.c index ee2b5222eac0..779940cb6e56 100644 --- a/arch/arm/mach-omap2/prm_common.c +++ b/arch/arm/mach-omap2/prm_common.c @@ -423,6 +423,105 @@ void prm_clear_context_loss_flags_old(u8 part, s16 inst, u16 idx) } /** + * 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); +} + +/** + * omap_prm_deassert_hardreset - deassert hardreset for an IP block + * @shift: register bit shift corresponding to the reset line + * @st_shift: reset status bit shift corresponding to the reset line + * @part: PRM partition + * @prm_mod: PRM submodule base or instance offset + * @offset: register offset + * @st_offset: status register offset + * + * Deasserts a hardware reset line for an IP block. + */ +int omap_prm_deassert_hardreset(u8 shift, u8 st_shift, u8 part, s16 prm_mod, + u16 offset, u16 st_offset) +{ + if (!prm_ll_data->deassert_hardreset) { + WARN_ONCE(1, "prm: %s: no mapping function defined\n", + __func__); + return -EINVAL; + } + + return prm_ll_data->deassert_hardreset(shift, st_shift, part, 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); +} + +/** + * omap_prm_reconfigure_io_chain - clear latches and reconfigure I/O chain + * + * Clear any previously-latched I/O wakeup events and ensure that the + * I/O wakeup gates are aligned with the current mux settings. + * Calls SoC specific I/O chain reconfigure function if available, + * otherwise does nothing. + */ +void omap_prm_reconfigure_io_chain(void) +{ + if (!prcm_irq_setup || !prcm_irq_setup->reconfigure_io_chain) + return; + + prcm_irq_setup->reconfigure_io_chain(); +} + +/** + * omap_prm_reset_system - trigger global SW reset + * + * Triggers SoC specific global warm reset to reboot the device. + */ +void omap_prm_reset_system(void) +{ + if (!prm_ll_data->reset_system) { + WARN_ONCE(1, "prm: %s: no mapping function defined\n", + __func__); + return; + } + + prm_ll_data->reset_system(); + + while (1) + cpu_relax(); +} + +/** * prm_register - register per-SoC low-level data with the PRM * @pld: low-level per-SoC OMAP PRM data & function pointers to register * |