Benoit Cousson <b-cousson@xxxxxx> writes:
> Since OMAP4 is using an absolute address, the current PRM accessors
> are not useable.
> OMAP4 adaptation for these API are currently ongoing, so define temp
> version until the proper ones are defined.
Curious what we're waiting for for the final versions of these?
Kevin
> Signed-off-by: Benoit Cousson <b-cousson@xxxxxx>
> Cc: Paul Walmsley <paul@xxxxxxxxx>
> Cc: Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx>
> ---
> arch/arm/mach-omap2/prcm.c | 24 ++++++++++++++++++++++++
> arch/arm/plat-omap/include/plat/prcm.h | 2 ++
> 2 files changed, 26 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/prcm.c b/arch/arm/mach-omap2/prcm.c
> index 96f4616..d4388d3 100644
> --- a/arch/arm/mach-omap2/prcm.c
> +++ b/arch/arm/mach-omap2/prcm.c
> @@ -216,6 +216,30 @@ u32 prm_read_mod_bits_shift(s16 domain, s16 idx, u32 mask)
> return v;
> }
>
> +/* Read a PRM register, AND it, and shift the result down to bit 0 */
> +u32 omap4_prm_read_bits_shift(void __iomem *reg, u32 mask)
> +{
> + u32 v;
> +
> + v = __raw_readl(reg);
> + v &= mask;
> + v >>= __ffs(mask);
> +
> + return v;
> +}
> +
> +/* Read-modify-write a register in a PRM module. Caller must lock */
> +u32 omap4_prm_rmw_reg_bits(u32 mask, u32 bits, void __iomem *reg)
> +{
> + u32 v;
> +
> + v = __raw_readl(reg);
> + v &= ~mask;
> + v |= bits;
> + __raw_writel(v, reg);
> +
> + return v;
> +}
> /* Read a register in a CM module */
> u32 cm_read_mod_reg(s16 module, u16 idx)
> {
> diff --git a/arch/arm/plat-omap/include/plat/prcm.h b/arch/arm/plat-omap/include/plat/prcm.h
> index 9fbd914..ab77442 100644
> --- a/arch/arm/plat-omap/include/plat/prcm.h
> +++ b/arch/arm/plat-omap/include/plat/prcm.h
> @@ -38,6 +38,8 @@ u32 prm_read_mod_reg(s16 module, u16 idx);
> void prm_write_mod_reg(u32 val, s16 module, u16 idx);
> u32 prm_rmw_mod_reg_bits(u32 mask, u32 bits, s16 module, s16 idx);
> u32 prm_read_mod_bits_shift(s16 domain, s16 idx, u32 mask);
> +u32 omap4_prm_read_bits_shift(void __iomem *reg, u32 mask);
> +u32 omap4_prm_rmw_reg_bits(u32 mask, u32 bits, void __iomem *reg);
> u32 cm_read_mod_reg(s16 module, u16 idx);
> void cm_write_mod_reg(u32 val, s16 module, u16 idx);
> u32 cm_rmw_mod_reg_bits(u32 mask, u32 bits, s16 module, s16 idx);
--
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