Kalle Jokiniemi <[email protected]> writes:
> OMAP 3430 ES3.1 chips have a separate bit for IO daisy-chain
> wake up enabling. It needs to be enabled when entering
> retention or off state, otherwise waking up might not work
> in all situations.
>
> Signed-off-by: Kalle Jokiniemi <[email protected]>
Thanks, pushed after...
> ---
> arch/arm/mach-omap2/pm34xx.c | 37 +++++++++++++++++++++++++++++--
> arch/arm/mach-omap2/prm-regbits-34xx.h | 2 +
> 2 files changed, 36 insertions(+), 3 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
> index 7bbbcce..4345df1 100644
> --- a/arch/arm/mach-omap2/pm34xx.c
> +++ b/arch/arm/mach-omap2/pm34xx.c
> @@ -101,6 +101,34 @@ static inline void omap3_per_restore_context(void)
> omap3_gpio_restore_context();
> }
>
> +static void omap3_enable_io_chain(void)
> +{
> + int timeout = 0;
> +
> + if (omap_rev() >= OMAP3430_REV_ES3_1) {
> + prm_set_mod_reg_bits(OMAP3430_EN_IO_CHAIN, WKUP_MOD, PM_WKEN);
> + /* Do a readback to assure write has been done */
> + prm_read_mod_reg(WKUP_MOD, PM_WKEN);
> +
> + while (!(prm_read_mod_reg(WKUP_MOD, PM_WKST) &
> + OMAP3430_ST_IO_CHAIN)) {
> + timeout++;
> + if (timeout > 1000) {
> + printk(KERN_ERR "Wake up daisy chain "
> + "activation failed.\n");
> + return;
> + }
> + prm_set_mod_reg_bits(OMAP3430_ST_IO_CHAIN, WKUP_MOD, PM_WKST);
fixing this screwy indent.
Kevin
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