| Message ID | 20170105114326.12426-4-wsa+renesas@sang-engineering.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Thu, Jan 05, 2017 at 12:43:26PM +0100, Wolfram Sang wrote: > Before enabling SDIO irqs, clear the status bit, so we discard old and > stale interrupts. Needed to get two wireless cards working. > > Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> > --- > drivers/mmc/host/tmio_mmc_pio.c | 11 ++++++++++- > 1 file changed, 10 insertions(+), 1 deletion(-) > > diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c > index d6033620a45c12..ebe3e12f0083dd 100644 > --- a/drivers/mmc/host/tmio_mmc_pio.c > +++ b/drivers/mmc/host/tmio_mmc_pio.c > @@ -134,12 +134,21 @@ static void tmio_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable) > struct tmio_mmc_host *host = mmc_priv(mmc); > > if (enable && !host->sdio_irq_enabled) { > + u16 sdio_status; > + > /* Keep device active while SDIO irq is enabled */ > pm_runtime_get_sync(mmc_dev(mmc)); > - host->sdio_irq_enabled = true; > > + host->sdio_irq_enabled = true; > host->sdio_irq_mask = TMIO_SDIO_MASK_ALL & > ~TMIO_SDIO_STAT_IOIRQ; > + > + /* Clear obsolete interrupts before enabling */ > + sdio_status = sd_ctrl_read16(host, CTL_SDIO_STATUS) & ~TMIO_SDIO_MASK_ALL; > + if (host->pdata->flags & TMIO_MMC_SDIO_STATUS_SETBITS) > + sdio_status |= 6; Perhaps a #define would be an improvement over "6". > + sd_ctrl_write16(host, CTL_SDIO_STATUS, sdio_status); > + > 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; > -- > 2.11.0 > -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
> > + if (host->pdata->flags & TMIO_MMC_SDIO_STATUS_SETBITS) > > + sdio_status |= 6; > > Perhaps a #define would be an improvement over "6". OK. -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c index d6033620a45c12..ebe3e12f0083dd 100644 --- a/drivers/mmc/host/tmio_mmc_pio.c +++ b/drivers/mmc/host/tmio_mmc_pio.c @@ -134,12 +134,21 @@ static void tmio_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable) struct tmio_mmc_host *host = mmc_priv(mmc); if (enable && !host->sdio_irq_enabled) { + u16 sdio_status; + /* Keep device active while SDIO irq is enabled */ pm_runtime_get_sync(mmc_dev(mmc)); - host->sdio_irq_enabled = true; + host->sdio_irq_enabled = true; host->sdio_irq_mask = TMIO_SDIO_MASK_ALL & ~TMIO_SDIO_STAT_IOIRQ; + + /* Clear obsolete interrupts before enabling */ + sdio_status = sd_ctrl_read16(host, CTL_SDIO_STATUS) & ~TMIO_SDIO_MASK_ALL; + if (host->pdata->flags & TMIO_MMC_SDIO_STATUS_SETBITS) + sdio_status |= 6; + sd_ctrl_write16(host, CTL_SDIO_STATUS, sdio_status); + 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;
Before enabling SDIO irqs, clear the status bit, so we discard old and stale interrupts. Needed to get two wireless cards working. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> --- drivers/mmc/host/tmio_mmc_pio.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-)