diff options
Diffstat (limited to 'drivers/mmc/host/sdhci.c')
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 63 |
1 files changed, 37 insertions, 26 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 4a24db028d8..f2bc87ac24f 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -1,5 +1,5 @@ /* - * linux/drivers/mmc/sdhci.c - Secure Digital Host Controller Interface driver + * linux/drivers/mmc/host/sdhci.c - Secure Digital Host Controller Interface driver * * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved. * @@ -34,6 +34,7 @@ static unsigned int debug_quirks = 0; /* Controller doesn't like some resets when there is no card inserted. */ #define SDHCI_QUIRK_NO_CARD_NO_RESET (1<<2) #define SDHCI_QUIRK_SINGLE_POWER_WRITE (1<<3) +#define SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS (1<<4) static const struct pci_device_id pci_ids[] __devinitdata = { { @@ -78,6 +79,24 @@ static const struct pci_device_id pci_ids[] __devinitdata = { .driver_data = SDHCI_QUIRK_SINGLE_POWER_WRITE, }, + { + .vendor = PCI_VENDOR_ID_ENE, + .device = PCI_DEVICE_ID_ENE_CB714_SD, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .driver_data = SDHCI_QUIRK_SINGLE_POWER_WRITE | + SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS, + }, + + { + .vendor = PCI_VENDOR_ID_ENE, + .device = PCI_DEVICE_ID_ENE_CB714_SD_2, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .driver_data = SDHCI_QUIRK_SINGLE_POWER_WRITE | + SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS, + }, + { /* Generic SD host controller */ PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00) }, @@ -361,11 +380,6 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_data *data) if (data == NULL) return; - DBG("blksz %04x blks %04x flags %08x\n", - data->blksz, data->blocks, data->flags); - DBG("tsac %d ms nsac %d clk\n", - data->timeout_ns / 1000000, data->timeout_clks); - /* Sanity checks */ BUG_ON(data->blksz * data->blocks > 524288); BUG_ON(data->blksz > host->mmc->max_blk_size); @@ -476,8 +490,6 @@ static void sdhci_finish_data(struct sdhci_host *host) data->error = MMC_ERR_FAILED; } - DBG("Ending data transfer (%d bytes)\n", data->bytes_xfered); - if (data->stop) { /* * The controller needs a reset of internal state machines @@ -501,8 +513,6 @@ static void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd) WARN_ON(host->cmd); - DBG("Sending cmd (%x)\n", cmd->opcode); - /* Wait max 10 ms */ timeout = 10; @@ -590,8 +600,6 @@ static void sdhci_finish_command(struct sdhci_host *host) host->cmd->error = MMC_ERR_NONE; - DBG("Ending cmd (%x)\n", host->cmd->opcode); - if (host->cmd->data) host->data = host->cmd->data; else @@ -759,6 +767,14 @@ static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL); + /* + * Some (ENE) controllers go apeshit on some ios operation, + * signalling timeout and CRC errors even on CMD0. Resetting + * it on each ios seems to solve the problem. + */ + if(host->chip->quirks & SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS) + sdhci_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA); + mmiowb(); spin_unlock_irqrestore(&host->lock, flags); } @@ -835,8 +851,6 @@ static void sdhci_tasklet_finish(unsigned long param) mrq = host->mrq; - DBG("Ending request, cmd (%x)\n", mrq->cmd->opcode); - /* * The controller needs a reset of internal state machines * upon error conditions. @@ -922,20 +936,17 @@ static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask) return; } - if (intmask & SDHCI_INT_RESPONSE) - sdhci_finish_command(host); - else { - if (intmask & SDHCI_INT_TIMEOUT) - host->cmd->error = MMC_ERR_TIMEOUT; - else if (intmask & SDHCI_INT_CRC) - host->cmd->error = MMC_ERR_BADCRC; - else if (intmask & (SDHCI_INT_END_BIT | SDHCI_INT_INDEX)) - host->cmd->error = MMC_ERR_FAILED; - else - host->cmd->error = MMC_ERR_INVALID; + if (intmask & SDHCI_INT_TIMEOUT) + host->cmd->error = MMC_ERR_TIMEOUT; + else if (intmask & SDHCI_INT_CRC) + host->cmd->error = MMC_ERR_BADCRC; + else if (intmask & (SDHCI_INT_END_BIT | SDHCI_INT_INDEX)) + host->cmd->error = MMC_ERR_FAILED; + if (host->cmd->error != MMC_ERR_NONE) tasklet_schedule(&host->finish_tasklet); - } + else if (intmask & SDHCI_INT_RESPONSE) + sdhci_finish_command(host); } static void sdhci_data_irq(struct sdhci_host *host, u32 intmask) |