Hi Shoji-san,
> From: Yasushi SHOJI
> Sent: Thursday, May 18, 2017 2:10 PM
>
> Hi,
>
> On Wed, May 17, 2017 at 4:47 PM, Yoshihiro Shimoda
> <yoshihiro.shimoda.uh@xxxxxxxxxxx> wrote:
> >>
> >> drivers/mmc/host/tmio_mmc_pio.c | 7 ++++---
> >> 1 file changed, 4 insertions(+), 3 deletions(-)
> >>
> >> diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c
> >> index 7ef24ec620b542..526e52719f81b9 100644
> >> --- a/drivers/mmc/host/tmio_mmc_pio.c
> >> +++ b/drivers/mmc/host/tmio_mmc_pio.c
> >> @@ -140,12 +140,10 @@ static void tmio_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable)
> >>
> >> host->sdio_irq_mask = TMIO_SDIO_MASK_ALL &
> >> ~TMIO_SDIO_STAT_IOIRQ;
> >> - sd_ctrl_write16(host, CTL_TRANSACTION_CTL, 0x0001);
> >> sd_ctrl_write16(host, CTL_SDIO_IRQ_MASK, host->sdio_irq_mask);
> >> } else if (!enable && host->sdio_irq_enabled) {
> >> host->sdio_irq_mask = TMIO_SDIO_MASK_ALL;
> >> sd_ctrl_write16(host, CTL_SDIO_IRQ_MASK, host->sdio_irq_mask);
> >> - sd_ctrl_write16(host, CTL_TRANSACTION_CTL, 0x0000);
> >>
> >> host->sdio_irq_enabled = false;
> >> pm_runtime_mark_last_busy(mmc_dev(mmc));
> >> @@ -1203,7 +1201,7 @@ int tmio_mmc_host_probe(struct tmio_mmc_host *_host,
> >> if (pdata->flags & TMIO_MMC_SDIO_IRQ) {
> >> _host->sdio_irq_mask = TMIO_SDIO_MASK_ALL;
> >> sd_ctrl_write16(_host, CTL_SDIO_IRQ_MASK, _host->sdio_irq_mask);
> >> - sd_ctrl_write16(_host, CTL_TRANSACTION_CTL, 0x0000);
> >> + sd_ctrl_write16(_host, CTL_TRANSACTION_CTL, 0x0001);
> >> }
> >
> > I'm afraid but I would like to confirm about this 6 month ago's patch :)
> >
> > This patch enables CTL_TRANSACTION_CTL to 0x0001 in tmio_mmc_host_probe().
> > But, I have a concern we have to disable/enable the register in suspend/resume()
> > because registers setting is possible to be cleared after resume.
> > What do you think?
>
> That's a good catch.
> I suppose we need that. I didn't check it for suspend/resume at
> thattime. My bad.
Thank you for the reply. I got it.
Wolfram-san will try to fix the issue.
Best regards,
Yoshihiro Shimoda
> Thanks,
> --
> yashi
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