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path: root/drivers/mmc/sdhci.c
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Diffstat (limited to 'drivers/mmc/sdhci.c')
-rw-r--r--drivers/mmc/sdhci.c55
1 files changed, 49 insertions, 6 deletions
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
index 74134699ccee..893319108ba4 100644
--- a/drivers/mmc/sdhci.c
+++ b/drivers/mmc/sdhci.c
@@ -32,9 +32,39 @@ static unsigned int debug_nodma = 0;
32static unsigned int debug_forcedma = 0; 32static unsigned int debug_forcedma = 0;
33static unsigned int debug_quirks = 0; 33static unsigned int debug_quirks = 0;
34 34
35#define SDHCI_QUIRK_CLOCK_BEFORE_RESET (1<<0)
36#define SDHCI_QUIRK_FORCE_DMA (1<<1)
37
35static const struct pci_device_id pci_ids[] __devinitdata = { 38static const struct pci_device_id pci_ids[] __devinitdata = {
36 /* handle any SD host controller */ 39 {
37 {PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00)}, 40 .vendor = PCI_VENDOR_ID_RICOH,
41 .device = PCI_DEVICE_ID_RICOH_R5C822,
42 .subvendor = PCI_VENDOR_ID_IBM,
43 .subdevice = PCI_ANY_ID,
44 .driver_data = SDHCI_QUIRK_CLOCK_BEFORE_RESET |
45 SDHCI_QUIRK_FORCE_DMA,
46 },
47
48 {
49 .vendor = PCI_VENDOR_ID_RICOH,
50 .device = PCI_DEVICE_ID_RICOH_R5C822,
51 .subvendor = PCI_ANY_ID,
52 .subdevice = PCI_ANY_ID,
53 .driver_data = SDHCI_QUIRK_FORCE_DMA,
54 },
55
56 {
57 .vendor = PCI_VENDOR_ID_TI,
58 .device = PCI_DEVICE_ID_TI_XX21_XX11_SD,
59 .subvendor = PCI_ANY_ID,
60 .subdevice = PCI_ANY_ID,
61 .driver_data = SDHCI_QUIRK_FORCE_DMA,
62 },
63
64 { /* Generic SD host controller */
65 PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00)
66 },
67
38 { /* end: all zeroes */ }, 68 { /* end: all zeroes */ },
39}; 69};
40 70
@@ -440,9 +470,7 @@ static void sdhci_finish_data(struct sdhci_host *host)
440 "though there were blocks left. Please report this " 470 "though there were blocks left. Please report this "
441 "to " BUGMAIL ".\n", mmc_hostname(host->mmc)); 471 "to " BUGMAIL ".\n", mmc_hostname(host->mmc));
442 data->error = MMC_ERR_FAILED; 472 data->error = MMC_ERR_FAILED;
443 } 473 } else if (host->size != 0) {
444
445 if (host->size != 0) {
446 printk(KERN_ERR "%s: %d bytes were left untransferred. " 474 printk(KERN_ERR "%s: %d bytes were left untransferred. "
447 "Please report this to " BUGMAIL ".\n", 475 "Please report this to " BUGMAIL ".\n",
448 mmc_hostname(host->mmc), host->size); 476 mmc_hostname(host->mmc), host->size);
@@ -808,6 +836,19 @@ static void sdhci_tasklet_finish(unsigned long param)
808 if ((mrq->cmd->error != MMC_ERR_NONE) || 836 if ((mrq->cmd->error != MMC_ERR_NONE) ||
809 (mrq->data && ((mrq->data->error != MMC_ERR_NONE) || 837 (mrq->data && ((mrq->data->error != MMC_ERR_NONE) ||
810 (mrq->data->stop && (mrq->data->stop->error != MMC_ERR_NONE))))) { 838 (mrq->data->stop && (mrq->data->stop->error != MMC_ERR_NONE))))) {
839
840 /* Some controllers need this kick or reset won't work here */
841 if (host->chip->quirks & SDHCI_QUIRK_CLOCK_BEFORE_RESET) {
842 unsigned int clock;
843
844 /* This is to force an update */
845 clock = host->clock;
846 host->clock = 0;
847 sdhci_set_clock(host, clock);
848 }
849
850 /* Spec says we should do both at the same time, but Ricoh
851 controllers do not like that. */
811 sdhci_reset(host, SDHCI_RESET_CMD); 852 sdhci_reset(host, SDHCI_RESET_CMD);
812 sdhci_reset(host, SDHCI_RESET_DATA); 853 sdhci_reset(host, SDHCI_RESET_DATA);
813 } 854 }
@@ -1165,7 +1206,9 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot)
1165 else if (debug_forcedma) { 1206 else if (debug_forcedma) {
1166 DBG("DMA forced on\n"); 1207 DBG("DMA forced on\n");
1167 host->flags |= SDHCI_USE_DMA; 1208 host->flags |= SDHCI_USE_DMA;
1168 } else if ((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA) 1209 } else if (chip->quirks & SDHCI_QUIRK_FORCE_DMA)
1210 host->flags |= SDHCI_USE_DMA;
1211 else if ((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA)
1169 DBG("Controller doesn't have DMA interface\n"); 1212 DBG("Controller doesn't have DMA interface\n");
1170 else if (!(caps & SDHCI_CAN_DO_DMA)) 1213 else if (!(caps & SDHCI_CAN_DO_DMA))
1171 DBG("Controller doesn't have DMA capability\n"); 1214 DBG("Controller doesn't have DMA capability\n");