diff options
Diffstat (limited to 'drivers/mmc/host/sdhci.c')
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 52 |
1 files changed, 47 insertions, 5 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 35789c6edc19..6779b4ecab18 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -584,7 +584,7 @@ static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_data *data) * longer to time out, but that's much better than having a too-short * timeout value. */ - if ((host->quirks & SDHCI_QUIRK_BROKEN_TIMEOUT_VAL)) + if (host->quirks & SDHCI_QUIRK_BROKEN_TIMEOUT_VAL) return 0xE; /* timeout in us */ @@ -1051,12 +1051,19 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned short power) * At least the Marvell CaFe chip gets confused if we set the voltage * and set turn on power at the same time, so set the voltage first. */ - if ((host->quirks & SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER)) + if (host->quirks & SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER) sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); pwr |= SDHCI_POWER_ON; sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); + + /* + * Some controllers need an extra 10ms delay of 10ms before they + * can apply clock after applying power + */ + if (host->quirks & SDHCI_QUIRK_DELAY_AFTER_POWER) + mdelay(10); } /*****************************************************************************\ @@ -1382,6 +1389,35 @@ static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask) sdhci_finish_command(host); } +#ifdef DEBUG +static void sdhci_show_adma_error(struct sdhci_host *host) +{ + const char *name = mmc_hostname(host->mmc); + u8 *desc = host->adma_desc; + __le32 *dma; + __le16 *len; + u8 attr; + + sdhci_dumpregs(host); + + while (true) { + dma = (__le32 *)(desc + 4); + len = (__le16 *)(desc + 2); + attr = *desc; + + DBG("%s: %p: DMA 0x%08x, LEN 0x%04x, Attr=0x%02x\n", + name, desc, le32_to_cpu(*dma), le16_to_cpu(*len), attr); + + desc += 8; + + if (attr & 2) + break; + } +} +#else +static void sdhci_show_adma_error(struct sdhci_host *host) { } +#endif + static void sdhci_data_irq(struct sdhci_host *host, u32 intmask) { BUG_ON(intmask == 0); @@ -1411,8 +1447,11 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask) host->data->error = -ETIMEDOUT; else if (intmask & (SDHCI_INT_DATA_CRC | SDHCI_INT_DATA_END_BIT)) host->data->error = -EILSEQ; - else if (intmask & SDHCI_INT_ADMA_ERROR) + else if (intmask & SDHCI_INT_ADMA_ERROR) { + printk(KERN_ERR "%s: ADMA error\n", mmc_hostname(host->mmc)); + sdhci_show_adma_error(host); host->data->error = -EIO; + } if (host->data->error) sdhci_finish_data(host); @@ -1729,7 +1768,10 @@ int sdhci_add_host(struct sdhci_host *host) mmc->ops = &sdhci_ops; mmc->f_min = host->max_clk / 256; mmc->f_max = host->max_clk; - mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SDIO_IRQ; + mmc->caps = MMC_CAP_SDIO_IRQ; + + if (!(host->quirks & SDHCI_QUIRK_FORCE_1_BIT_DATA)) + mmc->caps |= MMC_CAP_4_BIT_DATA; if (caps & SDHCI_CAN_DO_HISPD) mmc->caps |= MMC_CAP_SD_HIGHSPEED; @@ -1802,7 +1844,7 @@ int sdhci_add_host(struct sdhci_host *host) /* * Maximum block count. */ - mmc->max_blk_count = 65535; + mmc->max_blk_count = (host->quirks & SDHCI_QUIRK_NO_MULTIBLOCK) ? 1 : 65535; /* * Init tasklets. |