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| author |   Tero Kristo <t-kristo@ti.com> | 2014-10-27 08:39:25 -0700 |
|---|---|---|
| committer |   Tony Lindgren <tony@atomide.com> | 2014-10-27 08:39:25 -0700 |
| commit | 1bc28b3472dc44e6282b464fdb851adcea859be7 (patch) | |
| tree | 5fde189dae3b918c15780bfb3ac27633401fc2f6 /arch/arm/mach-omap2/prm33xx.c | |
| parent | ARM: OMAP2+: PRM: add generic API for deasserting hardware reset (diff) | |
| download | linux-dev-1bc28b3472dc44e6282b464fdb851adcea859be7.tar.xz linux-dev-1bc28b3472dc44e6282b464fdb851adcea859be7.zip | |
ARM: OMAP2+: PRM: add generic API for checking hardreset status
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>
Diffstat (limited to 'arch/arm/mach-omap2/prm33xx.c')
| -rw-r--r-- | arch/arm/mach-omap2/prm33xx.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/arch/arm/mach-omap2/prm33xx.c b/arch/arm/mach-omap2/prm33xx.c index ea0fea68e36c..3cbfb78ed5e9 100644 --- a/arch/arm/mach-omap2/prm33xx.c +++ b/arch/arm/mach-omap2/prm33xx.c @@ -52,6 +52,7 @@ u32 am33xx_prm_rmw_reg_bits(u32 mask, u32 bits, s16 inst, s16 idx) * am33xx_prm_is_hardreset_asserted - read the HW reset line state of * submodules contained in the hwmod module * @shift: register bit shift corresponding to the reset line to check + * @part: PRM partition, ignored for AM33xx * @inst: CM instance register offset (*_INST macro) * @rstctrl_offs: RM_RSTCTRL register address offset for this module * @@ -59,7 +60,8 @@ u32 am33xx_prm_rmw_reg_bits(u32 mask, u32 bits, s16 inst, s16 idx) * 0 if the (sub)module hardreset line is not currently asserted, or * -EINVAL upon parameter error. */ -int am33xx_prm_is_hardreset_asserted(u8 shift, s16 inst, u16 rstctrl_offs) +static int am33xx_prm_is_hardreset_asserted(u8 shift, u8 part, s16 inst, + u16 rstctrl_offs) { u32 v; @@ -121,7 +123,7 @@ static int am33xx_prm_deassert_hardreset(u8 shift, u8 st_shift, u8 part, u32 mask = 1 << st_shift; /* Check the current status to avoid de-asserting the line twice */ - if (am33xx_prm_is_hardreset_asserted(shift, inst, rstctrl_offs) == 0) + if (am33xx_prm_is_hardreset_asserted(shift, 0, inst, rstctrl_offs) == 0) return -EEXIST; /* Clear the reset status by writing 1 to the status bit */ @@ -133,7 +135,7 @@ static int am33xx_prm_deassert_hardreset(u8 shift, u8 st_shift, u8 part, am33xx_prm_rmw_reg_bits(mask, 0, inst, rstctrl_offs); /* wait the status to be set */ - omap_test_timeout(am33xx_prm_is_hardreset_asserted(st_shift, inst, + omap_test_timeout(am33xx_prm_is_hardreset_asserted(st_shift, 0, inst, rstst_offs), MAX_MODULE_HARDRESET_WAIT, c); @@ -351,6 +353,7 @@ struct pwrdm_ops am33xx_pwrdm_operations = { static struct prm_ll_data am33xx_prm_ll_data = { .assert_hardreset = am33xx_prm_assert_hardreset, .deassert_hardreset = am33xx_prm_deassert_hardreset, + .is_hardreset_asserted = am33xx_prm_is_hardreset_asserted, }; int __init am33xx_prm_init(void) |