diff options
Diffstat (limited to 'drivers/mmc/host/renesas_sdhi_internal_dmac.c')
| -rw-r--r-- | drivers/mmc/host/renesas_sdhi_internal_dmac.c | 30 |
1 files changed, 20 insertions, 10 deletions
diff --git a/drivers/mmc/host/renesas_sdhi_internal_dmac.c b/drivers/mmc/host/renesas_sdhi_internal_dmac.c index ca0b43973769..b6f54102bfdd 100644 --- a/drivers/mmc/host/renesas_sdhi_internal_dmac.c +++ b/drivers/mmc/host/renesas_sdhi_internal_dmac.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0 /* * DMA support for Internal DMAC with SDHI SD/SDIO controller * * Copyright (C) 2016-17 Renesas Electronics Corporation * Copyright (C) 2016-17 Horms Solutions, Simon Horman - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/bitops.h> @@ -35,8 +32,8 @@ /* DM_CM_DTRAN_MODE */ #define DTRAN_MODE_CH_NUM_CH0 0 /* "downstream" = for write commands */ -#define DTRAN_MODE_CH_NUM_CH1 BIT(16) /* "uptream" = for read commands */ -#define DTRAN_MODE_BUS_WID_TH (BIT(5) | BIT(4)) +#define DTRAN_MODE_CH_NUM_CH1 BIT(16) /* "upstream" = for read commands */ +#define DTRAN_MODE_BUS_WIDTH (BIT(5) | BIT(4)) #define DTRAN_MODE_ADDR_MODE BIT(0) /* 1 = Increment address */ /* DM_CM_DTRAN_CTRL */ @@ -116,6 +113,7 @@ static const struct renesas_sdhi_of_data of_rcar_gen3_compatible = { }; static const struct of_device_id renesas_sdhi_internal_dmac_of_match[] = { + { .compatible = "renesas,sdhi-mmc-r8a77470", .data = &of_rcar_gen3_compatible, }, { .compatible = "renesas,sdhi-r8a7795", .data = &of_rcar_r8a7795_compatible, }, { .compatible = "renesas,sdhi-r8a7796", .data = &of_rcar_r8a7795_compatible, }, { .compatible = "renesas,rcar-gen3-sdhi", .data = &of_rcar_gen3_compatible, }, @@ -174,7 +172,7 @@ renesas_sdhi_internal_dmac_start_dma(struct tmio_mmc_host *host, struct mmc_data *data) { struct scatterlist *sg = host->sg_ptr; - u32 dtran_mode = DTRAN_MODE_BUS_WID_TH | DTRAN_MODE_ADDR_MODE; + u32 dtran_mode = DTRAN_MODE_BUS_WIDTH | DTRAN_MODE_ADDR_MODE; if (!dma_map_sg(&host->pdev->dev, sg, host->sg_len, mmc_get_dma_dir(data))) @@ -201,13 +199,14 @@ renesas_sdhi_internal_dmac_start_dma(struct tmio_mmc_host *host, renesas_sdhi_internal_dmac_dm_write(host, DM_DTRAN_ADDR, sg_dma_address(sg)); + host->dma_on = true; + return; force_pio_with_unmap: dma_unmap_sg(&host->pdev->dev, sg, host->sg_len, mmc_get_dma_dir(data)); force_pio: - host->force_pio = true; renesas_sdhi_internal_dmac_enable_dma(host, false); } @@ -291,16 +290,19 @@ static const struct tmio_mmc_dma_ops renesas_sdhi_internal_dmac_dma_ops = { * Whitelist of specific R-Car Gen3 SoC ES versions to use this DMAC * implementation as others may use a different implementation. */ -static const struct soc_device_attribute gen3_soc_whitelist[] = { +static const struct soc_device_attribute soc_whitelist[] = { /* specific ones */ { .soc_id = "r8a7795", .revision = "ES1.*", .data = (void *)BIT(SDHI_INTERNAL_DMAC_ONE_RX_ONLY) }, { .soc_id = "r8a7796", .revision = "ES1.0", .data = (void *)BIT(SDHI_INTERNAL_DMAC_ONE_RX_ONLY) }, /* generic ones */ + { .soc_id = "r8a774a1" }, + { .soc_id = "r8a77470" }, { .soc_id = "r8a7795" }, { .soc_id = "r8a7796" }, { .soc_id = "r8a77965" }, + { .soc_id = "r8a77970" }, { .soc_id = "r8a77980" }, { .soc_id = "r8a77995" }, { /* sentinel */ } @@ -308,13 +310,21 @@ static const struct soc_device_attribute gen3_soc_whitelist[] = { static int renesas_sdhi_internal_dmac_probe(struct platform_device *pdev) { - const struct soc_device_attribute *soc = soc_device_match(gen3_soc_whitelist); + const struct soc_device_attribute *soc = soc_device_match(soc_whitelist); + struct device *dev = &pdev->dev; if (!soc) return -ENODEV; global_flags |= (unsigned long)soc->data; + dev->dma_parms = devm_kzalloc(dev, sizeof(*dev->dma_parms), GFP_KERNEL); + if (!dev->dma_parms) + return -ENOMEM; + + /* value is max of SD_SECCNT. Confirmed by HW engineers */ + dma_set_max_seg_size(dev, 0xffffffff); + return renesas_sdhi_probe(pdev, &renesas_sdhi_internal_dmac_dma_ops); } |