diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/host/dw_mmc-exynos.c | 5 | ||||
| -rw-r--r-- | drivers/mmc/host/dw_mmc.c | 9 | ||||
| -rw-r--r-- | drivers/mmc/host/dw_mmc.h | 5 |
3 files changed, 19 insertions, 0 deletions
diff --git a/drivers/mmc/host/dw_mmc-exynos.c b/drivers/mmc/host/dw_mmc-exynos.c index 3914024cf415..ca5be4445ae0 100644 --- a/drivers/mmc/host/dw_mmc-exynos.c +++ b/drivers/mmc/host/dw_mmc-exynos.c @@ -127,6 +127,11 @@ static int dw_mci_exynos_priv_init(struct dw_mci *host) DQS_CTRL_GET_RD_DELAY(priv->saved_strobe_ctrl); } + if (priv->ctrl_type == DW_MCI_TYPE_ARTPEC8) { + /* Quirk needed for the ARTPEC-8 SoC */ + host->quirks |= DW_MMC_QUIRK_EXTENDED_TMOUT; + } + host->bus_hz /= (priv->ciu_div + 1); return 0; diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index 05b72b3c5dc0..42bf8a2287ba 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -2762,11 +2762,20 @@ static irqreturn_t dw_mci_interrupt(int irq, void *dev_id) if (pending & DW_MCI_DATA_ERROR_FLAGS) { spin_lock(&host->irq_lock); + if (host->quirks & DW_MMC_QUIRK_EXTENDED_TMOUT) + del_timer(&host->dto_timer); + /* if there is an error report DATA_ERROR */ mci_writel(host, RINTSTS, DW_MCI_DATA_ERROR_FLAGS); host->data_status = pending; smp_wmb(); /* drain writebuffer */ set_bit(EVENT_DATA_ERROR, &host->pending_events); + + if (host->quirks & DW_MMC_QUIRK_EXTENDED_TMOUT) + /* In case of error, we cannot expect a DTO */ + set_bit(EVENT_DATA_COMPLETE, + &host->pending_events); + tasklet_schedule(&host->tasklet); spin_unlock(&host->irq_lock); diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h index 0a85d05eaf12..7f1e38621d13 100644 --- a/drivers/mmc/host/dw_mmc.h +++ b/drivers/mmc/host/dw_mmc.h @@ -118,6 +118,7 @@ struct dw_mci_dma_slave { * @part_buf: Simple buffer for partial fifo reads/writes. * @push_data: Pointer to FIFO push function. * @pull_data: Pointer to FIFO pull function. + * @quirks: Set of quirks that apply to specific versions of the IP. * @vqmmc_enabled: Status of vqmmc, should be true or false. * @irq_flags: The flags to be passed to request_irq. * @irq: The irq value to be passed to request_irq. @@ -223,6 +224,7 @@ struct dw_mci { void (*push_data)(struct dw_mci *host, void *buf, int cnt); void (*pull_data)(struct dw_mci *host, void *buf, int cnt); + u32 quirks; bool vqmmc_enabled; unsigned long irq_flags; /* IRQ flags */ int irq; @@ -274,6 +276,9 @@ struct dw_mci_board { struct dma_pdata *data; }; +/* Support for longer data read timeout */ +#define DW_MMC_QUIRK_EXTENDED_TMOUT BIT(0) + #define DW_MMC_240A 0x240a #define DW_MMC_280A 0x280a |