| Message ID | 1313489486-831-3-git-send-email-horms@verge.net.au (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Tue, 16 Aug 2011, Simon Horman wrote: > Provide separate interrupt handlers which may be used by platforms where > SDHI has three interrupt sources. > > This patch also removes the commented-out handling of CRC and other errors. > > Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> > Cc: Magnus Damm <magnus.damm@gmail.com> > Signed-off-by: Simon Horman <horms@verge.net.au> > > --- > > * SDCARD portion tested on AP4/Mackerel > * SDIO portion untested > > v3 > * Rebase for updated "mmc: tmio: Cache interrupt masks" > * As suggested by Guennadi Liakhovetski > - Do not alter logic to handle more than one interupt at once > - Add missing "static" to declartion of __tmio_mmc_sdcard_irq() > > v2 > * As suggested by Guennadi Liakhovetski > - Combine 3 patches into one > - Reduce the number of __tmio_..._irq() functions > - Rename "...card_access..." functions as "...sdcard..." > --- > drivers/mmc/host/tmio_mmc.h | 3 + > drivers/mmc/host/tmio_mmc_pio.c | 131 ++++++++++++++++++++++++-------------- > 2 files changed, 86 insertions(+), 48 deletions(-) > > diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h > index 1cf8db5..3020f98 100644 > --- a/drivers/mmc/host/tmio_mmc.h > +++ b/drivers/mmc/host/tmio_mmc.h > @@ -97,6 +97,9 @@ void tmio_mmc_do_data_irq(struct tmio_mmc_host *host); > void tmio_mmc_enable_mmc_irqs(struct tmio_mmc_host *host, u32 i); > void tmio_mmc_disable_mmc_irqs(struct tmio_mmc_host *host, u32 i); > irqreturn_t tmio_mmc_irq(int irq, void *devid); > +irqreturn_t tmio_mmc_sdcard_irq(int irq, void *devid); > +irqreturn_t tmio_mmc_card_detect_irq(int irq, void *devid); > +irqreturn_t tmio_mmc_sdio_irq(int irq, void *devid); > > static inline char *tmio_mmc_kmap_atomic(struct scatterlist *sg, > unsigned long *flags) > diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c > index f0c7830..37adfb2 100644 > --- a/drivers/mmc/host/tmio_mmc_pio.c > +++ b/drivers/mmc/host/tmio_mmc_pio.c > @@ -545,44 +545,20 @@ out: > spin_unlock(&host->lock); > } > > -irqreturn_t tmio_mmc_irq(int irq, void *devid) > +static void tmio_mmc_card_irq_status(struct tmio_mmc_host *host, > + int *ireg, int *status) > { > - struct tmio_mmc_host *host = devid; > - struct mmc_host *mmc = host->mmc; > - struct tmio_mmc_data *pdata = host->pdata; > - unsigned int ireg, status; > - unsigned int sdio_ireg, sdio_status; > - > - pr_debug("MMC IRQ begin\n"); > - > - status = sd_ctrl_read32(host, CTL_STATUS); > - ireg = status & TMIO_MASK_IRQ & ~host->sdcard_irq_mask; > - > - sdio_ireg = 0; > - if (!ireg && pdata->flags & TMIO_MMC_SDIO_IRQ) { > - sdio_status = sd_ctrl_read16(host, CTL_SDIO_STATUS); > - sdio_ireg = sdio_status & TMIO_SDIO_MASK_ALL & > - ~host->sdio_irq_mask; > + *status = sd_ctrl_read32(host, CTL_STATUS); > + *ireg = *status & TMIO_MASK_IRQ & ~host->sdcard_irq_mask; > > - sd_ctrl_write16(host, CTL_SDIO_STATUS, sdio_status & ~TMIO_SDIO_MASK_ALL); > - > - if (sdio_ireg && !host->sdio_irq_enabled) { > - pr_warning("tmio_mmc: Spurious SDIO IRQ, disabling! 0x%04x 0x%04x 0x%04x\n", > - sdio_status, host->sdio_irq_mask, sdio_ireg); > - tmio_mmc_enable_sdio_irq(mmc, 0); > - goto out; > - } > - > - if (mmc->caps & MMC_CAP_SDIO_IRQ && > - sdio_ireg & TMIO_SDIO_STAT_IOIRQ) > - mmc_signal_sdio_irq(mmc); > - > - if (sdio_ireg) > - goto out; > - } > + pr_debug_status(*status); > + pr_debug_status(*ireg); > +} > > - pr_debug_status(status); > - pr_debug_status(ireg); > +static int __tmio_mmc_card_detect_irq(struct tmio_mmc_host *host, > + int ireg, int status) > +{ > + struct mmc_host *mmc = host->mmc; > > /* Card insert / remove attempts */ > if (ireg & (TMIO_STAT_CARD_INSERT | TMIO_STAT_CARD_REMOVE)) { > @@ -592,43 +568,102 @@ irqreturn_t tmio_mmc_irq(int irq, void *devid) > ((ireg & TMIO_STAT_CARD_INSERT) && !mmc->card)) && > !work_pending(&mmc->detect.work)) > mmc_detect_change(host->mmc, msecs_to_jiffies(100)); > - goto out; > + return 1; > } > > - /* CRC and other errors */ > -/* if (ireg & TMIO_STAT_ERR_IRQ) > - * handled |= tmio_error_irq(host, irq, stat); > - */ > + return 0; > +} > + > +irqreturn_t tmio_mmc_card_detect_irq(int irq, void *devid) > +{ > + unsigned int ireg, status; > + struct tmio_mmc_host *host = devid; > > + tmio_mmc_card_irq_status(host, &ireg, &status); > + __tmio_mmc_card_detect_irq(host, ireg, status); > + > + return IRQ_HANDLED; > +} > +EXPORT_SYMBOL(tmio_mmc_card_detect_irq); > + > +static int __tmio_mmc_sdcard_irq(struct tmio_mmc_host *host, > + int ireg, int status) > +{ > /* Command completion */ > if (ireg & (TMIO_STAT_CMDRESPEND | TMIO_STAT_CMDTIMEOUT)) { > tmio_mmc_ack_mmc_irqs(host, > TMIO_STAT_CMDRESPEND | > TMIO_STAT_CMDTIMEOUT); > tmio_mmc_cmd_irq(host, status); > - goto out; > + return 1; > } > > /* Data transfer */ > if (ireg & (TMIO_STAT_RXRDY | TMIO_STAT_TXRQ)) { > tmio_mmc_ack_mmc_irqs(host, TMIO_STAT_RXRDY | TMIO_STAT_TXRQ); > tmio_mmc_pio_irq(host); > - goto out; > + return 1; > } > > /* Data transfer completion */ > if (ireg & TMIO_STAT_DATAEND) { > tmio_mmc_ack_mmc_irqs(host, TMIO_STAT_DATAEND); > tmio_mmc_data_irq(host); > - goto out; > + return 1; > } > > - pr_warning("tmio_mmc: Spurious irq, disabling! " > - "0x%08x 0x%08x 0x%08x\n", status, host->sdcard_irq_mask, ireg); > - pr_debug_status(status); > - tmio_mmc_disable_mmc_irqs(host, status & ~host->sdcard_irq_mask); > + return 0; > +} > + > +irqreturn_t tmio_mmc_sdcard_irq(int irq, void *devid) > +{ > + unsigned int ireg, status; > + struct tmio_mmc_host *host = devid; > + > + tmio_mmc_card_irq_status(host, &ireg, &status); > + __tmio_mmc_sdcard_irq(host, ireg, status); > + > + return IRQ_HANDLED; > +} > +EXPORT_SYMBOL(tmio_mmc_sdcard_irq); > + > +irqreturn_t tmio_mmc_sdio_irq(int irq, void *devid) > +{ > + struct tmio_mmc_host *host = devid; > + struct mmc_host *mmc = host->mmc; > + struct tmio_mmc_data *pdata = host->pdata; > + unsigned int ireg, status; > + > + if (!(pdata->flags & TMIO_MMC_SDIO_IRQ)) > + return IRQ_HANDLED; > + > + status = sd_ctrl_read16(host, CTL_SDIO_STATUS); > + ireg = status & TMIO_SDIO_MASK_ALL & ~host->sdcard_irq_mask; > + > + sd_ctrl_write16(host, CTL_SDIO_STATUS, status & ~TMIO_SDIO_MASK_ALL); > + > + if (mmc->caps & MMC_CAP_SDIO_IRQ && ireg & TMIO_SDIO_STAT_IOIRQ) > + mmc_signal_sdio_irq(mmc); > + > + return IRQ_HANDLED; > +} > +EXPORT_SYMBOL(tmio_mmc_sdio_irq); > + > +irqreturn_t tmio_mmc_irq(int irq, void *devid) > +{ > + struct tmio_mmc_host *host = devid; > + unsigned int ireg, status; > + > + pr_debug("MMC IRQ begin\n"); > + > + tmio_mmc_card_irq_status(host, &ireg, &status); > + if (__tmio_mmc_card_detect_irq(host, ireg, status)) > + return IRQ_HANDLED; > + if (__tmio_mmc_sdcard_irq(host, ireg, status)) > + return IRQ_HANDLED; You use the two above functions as "bool," which is also logical. So, I'd also declare them "bool" and return true or false instead of 1 and 0. > + > + tmio_mmc_sdio_irq(irq, devid); > > -out: > return IRQ_HANDLED; > } > EXPORT_SYMBOL(tmio_mmc_irq); > -- > 1.7.5.4 Thanks Guennadi --- Guennadi Liakhovetski, Ph.D. Freelance Open-Source Software Developer http://www.open-technology.de/ -- 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
On Tue, Aug 16, 2011 at 01:14:01PM +0200, Guennadi Liakhovetski wrote: > On Tue, 16 Aug 2011, Simon Horman wrote: > > > Provide separate interrupt handlers which may be used by platforms where > > SDHI has three interrupt sources. > > > > This patch also removes the commented-out handling of CRC and other errors. > > > > Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> > > Cc: Magnus Damm <magnus.damm@gmail.com> > > Signed-off-by: Simon Horman <horms@verge.net.au> > > > > --- > > > > * SDCARD portion tested on AP4/Mackerel > > * SDIO portion untested > > > > v3 > > * Rebase for updated "mmc: tmio: Cache interrupt masks" > > * As suggested by Guennadi Liakhovetski > > - Do not alter logic to handle more than one interupt at once > > - Add missing "static" to declartion of __tmio_mmc_sdcard_irq() > > > > v2 > > * As suggested by Guennadi Liakhovetski > > - Combine 3 patches into one > > - Reduce the number of __tmio_..._irq() functions > > - Rename "...card_access..." functions as "...sdcard..." > > --- > > drivers/mmc/host/tmio_mmc.h | 3 + > > drivers/mmc/host/tmio_mmc_pio.c | 131 ++++++++++++++++++++++++-------------- > > 2 files changed, 86 insertions(+), 48 deletions(-) > > > > diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h > > index 1cf8db5..3020f98 100644 > > --- a/drivers/mmc/host/tmio_mmc.h > > +++ b/drivers/mmc/host/tmio_mmc.h > > @@ -97,6 +97,9 @@ void tmio_mmc_do_data_irq(struct tmio_mmc_host *host); > > void tmio_mmc_enable_mmc_irqs(struct tmio_mmc_host *host, u32 i); > > void tmio_mmc_disable_mmc_irqs(struct tmio_mmc_host *host, u32 i); > > irqreturn_t tmio_mmc_irq(int irq, void *devid); > > +irqreturn_t tmio_mmc_sdcard_irq(int irq, void *devid); > > +irqreturn_t tmio_mmc_card_detect_irq(int irq, void *devid); > > +irqreturn_t tmio_mmc_sdio_irq(int irq, void *devid); > > > > static inline char *tmio_mmc_kmap_atomic(struct scatterlist *sg, > > unsigned long *flags) > > diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c > > index f0c7830..37adfb2 100644 > > --- a/drivers/mmc/host/tmio_mmc_pio.c > > +++ b/drivers/mmc/host/tmio_mmc_pio.c > > @@ -545,44 +545,20 @@ out: > > spin_unlock(&host->lock); > > } > > > > -irqreturn_t tmio_mmc_irq(int irq, void *devid) > > +static void tmio_mmc_card_irq_status(struct tmio_mmc_host *host, > > + int *ireg, int *status) > > { > > - struct tmio_mmc_host *host = devid; > > - struct mmc_host *mmc = host->mmc; > > - struct tmio_mmc_data *pdata = host->pdata; > > - unsigned int ireg, status; > > - unsigned int sdio_ireg, sdio_status; > > - > > - pr_debug("MMC IRQ begin\n"); > > - > > - status = sd_ctrl_read32(host, CTL_STATUS); > > - ireg = status & TMIO_MASK_IRQ & ~host->sdcard_irq_mask; > > - > > - sdio_ireg = 0; > > - if (!ireg && pdata->flags & TMIO_MMC_SDIO_IRQ) { > > - sdio_status = sd_ctrl_read16(host, CTL_SDIO_STATUS); > > - sdio_ireg = sdio_status & TMIO_SDIO_MASK_ALL & > > - ~host->sdio_irq_mask; > > + *status = sd_ctrl_read32(host, CTL_STATUS); > > + *ireg = *status & TMIO_MASK_IRQ & ~host->sdcard_irq_mask; > > > > - sd_ctrl_write16(host, CTL_SDIO_STATUS, sdio_status & ~TMIO_SDIO_MASK_ALL); > > - > > - if (sdio_ireg && !host->sdio_irq_enabled) { > > - pr_warning("tmio_mmc: Spurious SDIO IRQ, disabling! 0x%04x 0x%04x 0x%04x\n", > > - sdio_status, host->sdio_irq_mask, sdio_ireg); > > - tmio_mmc_enable_sdio_irq(mmc, 0); > > - goto out; > > - } > > - > > - if (mmc->caps & MMC_CAP_SDIO_IRQ && > > - sdio_ireg & TMIO_SDIO_STAT_IOIRQ) > > - mmc_signal_sdio_irq(mmc); > > - > > - if (sdio_ireg) > > - goto out; > > - } > > + pr_debug_status(*status); > > + pr_debug_status(*ireg); > > +} > > > > - pr_debug_status(status); > > - pr_debug_status(ireg); > > +static int __tmio_mmc_card_detect_irq(struct tmio_mmc_host *host, > > + int ireg, int status) > > +{ > > + struct mmc_host *mmc = host->mmc; > > > > /* Card insert / remove attempts */ > > if (ireg & (TMIO_STAT_CARD_INSERT | TMIO_STAT_CARD_REMOVE)) { > > @@ -592,43 +568,102 @@ irqreturn_t tmio_mmc_irq(int irq, void *devid) > > ((ireg & TMIO_STAT_CARD_INSERT) && !mmc->card)) && > > !work_pending(&mmc->detect.work)) > > mmc_detect_change(host->mmc, msecs_to_jiffies(100)); > > - goto out; > > + return 1; > > } > > > > - /* CRC and other errors */ > > -/* if (ireg & TMIO_STAT_ERR_IRQ) > > - * handled |= tmio_error_irq(host, irq, stat); > > - */ > > + return 0; > > +} > > + > > +irqreturn_t tmio_mmc_card_detect_irq(int irq, void *devid) > > +{ > > + unsigned int ireg, status; > > + struct tmio_mmc_host *host = devid; > > > > + tmio_mmc_card_irq_status(host, &ireg, &status); > > + __tmio_mmc_card_detect_irq(host, ireg, status); > > + > > + return IRQ_HANDLED; > > +} > > +EXPORT_SYMBOL(tmio_mmc_card_detect_irq); > > + > > +static int __tmio_mmc_sdcard_irq(struct tmio_mmc_host *host, > > + int ireg, int status) > > +{ > > /* Command completion */ > > if (ireg & (TMIO_STAT_CMDRESPEND | TMIO_STAT_CMDTIMEOUT)) { > > tmio_mmc_ack_mmc_irqs(host, > > TMIO_STAT_CMDRESPEND | > > TMIO_STAT_CMDTIMEOUT); > > tmio_mmc_cmd_irq(host, status); > > - goto out; > > + return 1; > > } > > > > /* Data transfer */ > > if (ireg & (TMIO_STAT_RXRDY | TMIO_STAT_TXRQ)) { > > tmio_mmc_ack_mmc_irqs(host, TMIO_STAT_RXRDY | TMIO_STAT_TXRQ); > > tmio_mmc_pio_irq(host); > > - goto out; > > + return 1; > > } > > > > /* Data transfer completion */ > > if (ireg & TMIO_STAT_DATAEND) { > > tmio_mmc_ack_mmc_irqs(host, TMIO_STAT_DATAEND); > > tmio_mmc_data_irq(host); > > - goto out; > > + return 1; > > } > > > > - pr_warning("tmio_mmc: Spurious irq, disabling! " > > - "0x%08x 0x%08x 0x%08x\n", status, host->sdcard_irq_mask, ireg); > > - pr_debug_status(status); > > - tmio_mmc_disable_mmc_irqs(host, status & ~host->sdcard_irq_mask); > > + return 0; > > +} > > + > > +irqreturn_t tmio_mmc_sdcard_irq(int irq, void *devid) > > +{ > > + unsigned int ireg, status; > > + struct tmio_mmc_host *host = devid; > > + > > + tmio_mmc_card_irq_status(host, &ireg, &status); > > + __tmio_mmc_sdcard_irq(host, ireg, status); > > + > > + return IRQ_HANDLED; > > +} > > +EXPORT_SYMBOL(tmio_mmc_sdcard_irq); > > + > > +irqreturn_t tmio_mmc_sdio_irq(int irq, void *devid) > > +{ > > + struct tmio_mmc_host *host = devid; > > + struct mmc_host *mmc = host->mmc; > > + struct tmio_mmc_data *pdata = host->pdata; > > + unsigned int ireg, status; > > + > > + if (!(pdata->flags & TMIO_MMC_SDIO_IRQ)) > > + return IRQ_HANDLED; > > + > > + status = sd_ctrl_read16(host, CTL_SDIO_STATUS); > > + ireg = status & TMIO_SDIO_MASK_ALL & ~host->sdcard_irq_mask; > > + > > + sd_ctrl_write16(host, CTL_SDIO_STATUS, status & ~TMIO_SDIO_MASK_ALL); > > + > > + if (mmc->caps & MMC_CAP_SDIO_IRQ && ireg & TMIO_SDIO_STAT_IOIRQ) > > + mmc_signal_sdio_irq(mmc); > > + > > + return IRQ_HANDLED; > > +} > > +EXPORT_SYMBOL(tmio_mmc_sdio_irq); > > + > > +irqreturn_t tmio_mmc_irq(int irq, void *devid) > > +{ > > + struct tmio_mmc_host *host = devid; > > + unsigned int ireg, status; > > + > > + pr_debug("MMC IRQ begin\n"); > > + > > + tmio_mmc_card_irq_status(host, &ireg, &status); > > + if (__tmio_mmc_card_detect_irq(host, ireg, status)) > > + return IRQ_HANDLED; > > + if (__tmio_mmc_sdcard_irq(host, ireg, status)) > > + return IRQ_HANDLED; > > You use the two above functions as "bool," which is also logical. So, I'd > also declare them "bool" and return true or false instead of 1 and 0. Sure, will do. -- 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.h b/drivers/mmc/host/tmio_mmc.h index 1cf8db5..3020f98 100644 --- a/drivers/mmc/host/tmio_mmc.h +++ b/drivers/mmc/host/tmio_mmc.h @@ -97,6 +97,9 @@ void tmio_mmc_do_data_irq(struct tmio_mmc_host *host); void tmio_mmc_enable_mmc_irqs(struct tmio_mmc_host *host, u32 i); void tmio_mmc_disable_mmc_irqs(struct tmio_mmc_host *host, u32 i); irqreturn_t tmio_mmc_irq(int irq, void *devid); +irqreturn_t tmio_mmc_sdcard_irq(int irq, void *devid); +irqreturn_t tmio_mmc_card_detect_irq(int irq, void *devid); +irqreturn_t tmio_mmc_sdio_irq(int irq, void *devid); static inline char *tmio_mmc_kmap_atomic(struct scatterlist *sg, unsigned long *flags) diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c index f0c7830..37adfb2 100644 --- a/drivers/mmc/host/tmio_mmc_pio.c +++ b/drivers/mmc/host/tmio_mmc_pio.c @@ -545,44 +545,20 @@ out: spin_unlock(&host->lock); } -irqreturn_t tmio_mmc_irq(int irq, void *devid) +static void tmio_mmc_card_irq_status(struct tmio_mmc_host *host, + int *ireg, int *status) { - struct tmio_mmc_host *host = devid; - struct mmc_host *mmc = host->mmc; - struct tmio_mmc_data *pdata = host->pdata; - unsigned int ireg, status; - unsigned int sdio_ireg, sdio_status; - - pr_debug("MMC IRQ begin\n"); - - status = sd_ctrl_read32(host, CTL_STATUS); - ireg = status & TMIO_MASK_IRQ & ~host->sdcard_irq_mask; - - sdio_ireg = 0; - if (!ireg && pdata->flags & TMIO_MMC_SDIO_IRQ) { - sdio_status = sd_ctrl_read16(host, CTL_SDIO_STATUS); - sdio_ireg = sdio_status & TMIO_SDIO_MASK_ALL & - ~host->sdio_irq_mask; + *status = sd_ctrl_read32(host, CTL_STATUS); + *ireg = *status & TMIO_MASK_IRQ & ~host->sdcard_irq_mask; - sd_ctrl_write16(host, CTL_SDIO_STATUS, sdio_status & ~TMIO_SDIO_MASK_ALL); - - if (sdio_ireg && !host->sdio_irq_enabled) { - pr_warning("tmio_mmc: Spurious SDIO IRQ, disabling! 0x%04x 0x%04x 0x%04x\n", - sdio_status, host->sdio_irq_mask, sdio_ireg); - tmio_mmc_enable_sdio_irq(mmc, 0); - goto out; - } - - if (mmc->caps & MMC_CAP_SDIO_IRQ && - sdio_ireg & TMIO_SDIO_STAT_IOIRQ) - mmc_signal_sdio_irq(mmc); - - if (sdio_ireg) - goto out; - } + pr_debug_status(*status); + pr_debug_status(*ireg); +} - pr_debug_status(status); - pr_debug_status(ireg); +static int __tmio_mmc_card_detect_irq(struct tmio_mmc_host *host, + int ireg, int status) +{ + struct mmc_host *mmc = host->mmc; /* Card insert / remove attempts */ if (ireg & (TMIO_STAT_CARD_INSERT | TMIO_STAT_CARD_REMOVE)) { @@ -592,43 +568,102 @@ irqreturn_t tmio_mmc_irq(int irq, void *devid) ((ireg & TMIO_STAT_CARD_INSERT) && !mmc->card)) && !work_pending(&mmc->detect.work)) mmc_detect_change(host->mmc, msecs_to_jiffies(100)); - goto out; + return 1; } - /* CRC and other errors */ -/* if (ireg & TMIO_STAT_ERR_IRQ) - * handled |= tmio_error_irq(host, irq, stat); - */ + return 0; +} + +irqreturn_t tmio_mmc_card_detect_irq(int irq, void *devid) +{ + unsigned int ireg, status; + struct tmio_mmc_host *host = devid; + tmio_mmc_card_irq_status(host, &ireg, &status); + __tmio_mmc_card_detect_irq(host, ireg, status); + + return IRQ_HANDLED; +} +EXPORT_SYMBOL(tmio_mmc_card_detect_irq); + +static int __tmio_mmc_sdcard_irq(struct tmio_mmc_host *host, + int ireg, int status) +{ /* Command completion */ if (ireg & (TMIO_STAT_CMDRESPEND | TMIO_STAT_CMDTIMEOUT)) { tmio_mmc_ack_mmc_irqs(host, TMIO_STAT_CMDRESPEND | TMIO_STAT_CMDTIMEOUT); tmio_mmc_cmd_irq(host, status); - goto out; + return 1; } /* Data transfer */ if (ireg & (TMIO_STAT_RXRDY | TMIO_STAT_TXRQ)) { tmio_mmc_ack_mmc_irqs(host, TMIO_STAT_RXRDY | TMIO_STAT_TXRQ); tmio_mmc_pio_irq(host); - goto out; + return 1; } /* Data transfer completion */ if (ireg & TMIO_STAT_DATAEND) { tmio_mmc_ack_mmc_irqs(host, TMIO_STAT_DATAEND); tmio_mmc_data_irq(host); - goto out; + return 1; } - pr_warning("tmio_mmc: Spurious irq, disabling! " - "0x%08x 0x%08x 0x%08x\n", status, host->sdcard_irq_mask, ireg); - pr_debug_status(status); - tmio_mmc_disable_mmc_irqs(host, status & ~host->sdcard_irq_mask); + return 0; +} + +irqreturn_t tmio_mmc_sdcard_irq(int irq, void *devid) +{ + unsigned int ireg, status; + struct tmio_mmc_host *host = devid; + + tmio_mmc_card_irq_status(host, &ireg, &status); + __tmio_mmc_sdcard_irq(host, ireg, status); + + return IRQ_HANDLED; +} +EXPORT_SYMBOL(tmio_mmc_sdcard_irq); + +irqreturn_t tmio_mmc_sdio_irq(int irq, void *devid) +{ + struct tmio_mmc_host *host = devid; + struct mmc_host *mmc = host->mmc; + struct tmio_mmc_data *pdata = host->pdata; + unsigned int ireg, status; + + if (!(pdata->flags & TMIO_MMC_SDIO_IRQ)) + return IRQ_HANDLED; + + status = sd_ctrl_read16(host, CTL_SDIO_STATUS); + ireg = status & TMIO_SDIO_MASK_ALL & ~host->sdcard_irq_mask; + + sd_ctrl_write16(host, CTL_SDIO_STATUS, status & ~TMIO_SDIO_MASK_ALL); + + if (mmc->caps & MMC_CAP_SDIO_IRQ && ireg & TMIO_SDIO_STAT_IOIRQ) + mmc_signal_sdio_irq(mmc); + + return IRQ_HANDLED; +} +EXPORT_SYMBOL(tmio_mmc_sdio_irq); + +irqreturn_t tmio_mmc_irq(int irq, void *devid) +{ + struct tmio_mmc_host *host = devid; + unsigned int ireg, status; + + pr_debug("MMC IRQ begin\n"); + + tmio_mmc_card_irq_status(host, &ireg, &status); + if (__tmio_mmc_card_detect_irq(host, ireg, status)) + return IRQ_HANDLED; + if (__tmio_mmc_sdcard_irq(host, ireg, status)) + return IRQ_HANDLED; + + tmio_mmc_sdio_irq(irq, devid); -out: return IRQ_HANDLED; } EXPORT_SYMBOL(tmio_mmc_irq);
Provide separate interrupt handlers which may be used by platforms where SDHI has three interrupt sources. This patch also removes the commented-out handling of CRC and other errors. Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Cc: Magnus Damm <magnus.damm@gmail.com> Signed-off-by: Simon Horman <horms@verge.net.au> --- * SDCARD portion tested on AP4/Mackerel * SDIO portion untested v3 * Rebase for updated "mmc: tmio: Cache interrupt masks" * As suggested by Guennadi Liakhovetski - Do not alter logic to handle more than one interupt at once - Add missing "static" to declartion of __tmio_mmc_sdcard_irq() v2 * As suggested by Guennadi Liakhovetski - Combine 3 patches into one - Reduce the number of __tmio_..._irq() functions - Rename "...card_access..." functions as "...sdcard..." --- drivers/mmc/host/tmio_mmc.h | 3 + drivers/mmc/host/tmio_mmc_pio.c | 131 ++++++++++++++++++++++++-------------- 2 files changed, 86 insertions(+), 48 deletions(-)