diff options
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/mxs-mmc.c | 48 |
1 files changed, 5 insertions, 43 deletions
diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c index 146a53bfab71..4278a1787d08 100644 --- a/drivers/mmc/host/mxs-mmc.c +++ b/drivers/mmc/host/mxs-mmc.c | |||
| @@ -552,22 +552,6 @@ static const struct mmc_host_ops mxs_mmc_ops = { | |||
| 552 | .enable_sdio_irq = mxs_mmc_enable_sdio_irq, | 552 | .enable_sdio_irq = mxs_mmc_enable_sdio_irq, |
| 553 | }; | 553 | }; |
| 554 | 554 | ||
| 555 | static bool mxs_mmc_dma_filter(struct dma_chan *chan, void *param) | ||
| 556 | { | ||
| 557 | struct mxs_mmc_host *host = param; | ||
| 558 | struct mxs_ssp *ssp = &host->ssp; | ||
| 559 | |||
| 560 | if (!mxs_dma_is_apbh(chan)) | ||
| 561 | return false; | ||
| 562 | |||
| 563 | if (chan->chan_id != ssp->dma_channel) | ||
| 564 | return false; | ||
| 565 | |||
| 566 | chan->private = &ssp->dma_data; | ||
| 567 | |||
| 568 | return true; | ||
| 569 | } | ||
| 570 | |||
| 571 | static struct platform_device_id mxs_ssp_ids[] = { | 555 | static struct platform_device_id mxs_ssp_ids[] = { |
| 572 | { | 556 | { |
| 573 | .name = "imx23-mmc", | 557 | .name = "imx23-mmc", |
| @@ -595,20 +579,17 @@ static int mxs_mmc_probe(struct platform_device *pdev) | |||
| 595 | struct device_node *np = pdev->dev.of_node; | 579 | struct device_node *np = pdev->dev.of_node; |
| 596 | struct mxs_mmc_host *host; | 580 | struct mxs_mmc_host *host; |
| 597 | struct mmc_host *mmc; | 581 | struct mmc_host *mmc; |
| 598 | struct resource *iores, *dmares; | 582 | struct resource *iores; |
| 599 | struct pinctrl *pinctrl; | 583 | struct pinctrl *pinctrl; |
| 600 | int ret = 0, irq_err, irq_dma; | 584 | int ret = 0, irq_err; |
| 601 | dma_cap_mask_t mask; | ||
| 602 | struct regulator *reg_vmmc; | 585 | struct regulator *reg_vmmc; |
| 603 | enum of_gpio_flags flags; | 586 | enum of_gpio_flags flags; |
| 604 | struct mxs_ssp *ssp; | 587 | struct mxs_ssp *ssp; |
| 605 | u32 bus_width = 0; | 588 | u32 bus_width = 0; |
| 606 | 589 | ||
| 607 | iores = platform_get_resource(pdev, IORESOURCE_MEM, 0); | 590 | iores = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 608 | dmares = platform_get_resource(pdev, IORESOURCE_DMA, 0); | ||
| 609 | irq_err = platform_get_irq(pdev, 0); | 591 | irq_err = platform_get_irq(pdev, 0); |
| 610 | irq_dma = platform_get_irq(pdev, 1); | 592 | if (!iores || irq_err < 0) |
| 611 | if (!iores || irq_err < 0 || irq_dma < 0) | ||
| 612 | return -EINVAL; | 593 | return -EINVAL; |
| 613 | 594 | ||
| 614 | mmc = mmc_alloc_host(sizeof(struct mxs_mmc_host), &pdev->dev); | 595 | mmc = mmc_alloc_host(sizeof(struct mxs_mmc_host), &pdev->dev); |
| @@ -624,23 +605,7 @@ static int mxs_mmc_probe(struct platform_device *pdev) | |||
| 624 | goto out_mmc_free; | 605 | goto out_mmc_free; |
| 625 | } | 606 | } |
| 626 | 607 | ||
| 627 | if (np) { | 608 | ssp->devid = (enum mxs_ssp_id) of_id->data; |
| 628 | ssp->devid = (enum mxs_ssp_id) of_id->data; | ||
| 629 | /* | ||
| 630 | * TODO: This is a temporary solution and should be changed | ||
| 631 | * to use generic DMA binding later when the helpers get in. | ||
| 632 | */ | ||
| 633 | ret = of_property_read_u32(np, "fsl,ssp-dma-channel", | ||
| 634 | &ssp->dma_channel); | ||
| 635 | if (ret) { | ||
| 636 | dev_err(mmc_dev(host->mmc), | ||
| 637 | "failed to get dma channel\n"); | ||
| 638 | goto out_mmc_free; | ||
| 639 | } | ||
| 640 | } else { | ||
| 641 | ssp->devid = pdev->id_entry->driver_data; | ||
| 642 | ssp->dma_channel = dmares->start; | ||
| 643 | } | ||
| 644 | 609 | ||
| 645 | host->mmc = mmc; | 610 | host->mmc = mmc; |
| 646 | host->sdio_irq_en = 0; | 611 | host->sdio_irq_en = 0; |
| @@ -670,10 +635,7 @@ static int mxs_mmc_probe(struct platform_device *pdev) | |||
| 670 | 635 | ||
| 671 | mxs_mmc_reset(host); | 636 | mxs_mmc_reset(host); |
| 672 | 637 | ||
| 673 | dma_cap_zero(mask); | 638 | ssp->dmach = dma_request_slave_channel(&pdev->dev, "rx-tx"); |
| 674 | dma_cap_set(DMA_SLAVE, mask); | ||
| 675 | ssp->dma_data.chan_irq = irq_dma; | ||
| 676 | ssp->dmach = dma_request_channel(mask, mxs_mmc_dma_filter, host); | ||
| 677 | if (!ssp->dmach) { | 639 | if (!ssp->dmach) { |
| 678 | dev_err(mmc_dev(host->mmc), | 640 | dev_err(mmc_dev(host->mmc), |
| 679 | "%s: failed to request dma\n", __func__); | 641 | "%s: failed to request dma\n", __func__); |
