diff options
| -rw-r--r-- | arch/powerpc/boot/dts/mpc5121.dtsi | 2 | ||||
| -rw-r--r-- | drivers/mmc/host/mxcmmc.c | 35 |
2 files changed, 35 insertions, 2 deletions
diff --git a/arch/powerpc/boot/dts/mpc5121.dtsi b/arch/powerpc/boot/dts/mpc5121.dtsi index 723e292b6b4e..710aae6ecb40 100644 --- a/arch/powerpc/boot/dts/mpc5121.dtsi +++ b/arch/powerpc/boot/dts/mpc5121.dtsi @@ -152,6 +152,8 @@ compatible = "fsl,mpc5121-sdhc"; reg = <0x1500 0x100>; interrupts = <8 0x8>; + dmas = <&dma0 30>; + dma-names = "rx-tx"; }; i2c@1700 { diff --git a/drivers/mmc/host/mxcmmc.c b/drivers/mmc/host/mxcmmc.c index 5d528269587f..d5036353bddc 100644 --- a/drivers/mmc/host/mxcmmc.c +++ b/drivers/mmc/host/mxcmmc.c @@ -301,6 +301,29 @@ static void mxcmci_softreset(struct mxcmci_host *host) } static int mxcmci_setup_dma(struct mmc_host *mmc); +#if IS_ENABLED(CONFIG_PPC_MPC512x) +static inline void buffer_swap32(u32 *buf, int len) +{ + int i; + + for (i = 0; i < ((len + 3) / 4); i++) { + st_le32(buf, *buf); + buf++; + } +} + +static void mxcmci_swap_buffers(struct mmc_data *data) +{ + struct scatterlist *sg; + int i; + + for_each_sg(data->sg, sg, data->sg_len, i) + buffer_swap32(sg_virt(sg), sg->length); +} +#else +static inline void mxcmci_swap_buffers(struct mmc_data *data) {} +#endif + static int mxcmci_setup_data(struct mxcmci_host *host, struct mmc_data *data) { unsigned int nob = data->blocks; @@ -336,6 +359,8 @@ static int mxcmci_setup_data(struct mxcmci_host *host, struct mmc_data *data) } else { host->dma_dir = DMA_TO_DEVICE; slave_dirn = DMA_MEM_TO_DEV; + + mxcmci_swap_buffers(data); } nents = dma_map_sg(host->dma->device->dev, data->sg, @@ -461,9 +486,11 @@ static int mxcmci_finish_data(struct mxcmci_host *host, unsigned int stat) struct mmc_data *data = host->data; int data_error; - if (mxcmci_use_dma(host)) + if (mxcmci_use_dma(host)) { dma_unmap_sg(host->dma->device->dev, data->sg, data->sg_len, host->dma_dir); + mxcmci_swap_buffers(data); + } if (stat & STATUS_ERR_MASK) { dev_dbg(mmc_dev(host->mmc), "request failed. status: 0x%08x\n", @@ -1050,7 +1077,6 @@ static int mxcmci_probe(struct platform_device *pdev) mmc->caps |= MMC_CAP_SDIO_IRQ; /* MMC core transfer sizes tunable parameters */ - mmc->max_segs = 64; mmc->max_blk_size = 2048; mmc->max_blk_count = 65535; mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count; @@ -1069,6 +1095,11 @@ static int mxcmci_probe(struct platform_device *pdev) } else { host->devtype = pdev->id_entry->driver_data; } + + /* adjust max_segs after devtype detection */ + if (!is_mpc512x_mmc(host)) + mmc->max_segs = 64; + host->mmc = mmc; host->pdata = pdata; spin_lock_init(&host->lock); |