From 3536b82e5853ec302c1803896c126725afb6d57c Mon Sep 17 00:00:00 2001 From: Yangtao Li Date: Fri, 11 Dec 2020 01:19:22 +0000 Subject: mmc: sunxi: add support for A100 mmc controller This patch adds support for A100 MMC controller, which use word address for internal dma. Signed-off-by: Yangtao Li Signed-off-by: Andre Przywara Link: https://lore.kernel.org/r/20201211011934.6171-10-andre.przywara@arm.com Signed-off-by: Ulf Hansson --- drivers/mmc/host/sunxi-mmc.c | 28 +++++++++++++++++++++++++--- 1 file changed, 25 insertions(+), 3 deletions(-) (limited to 'drivers/mmc/host/sunxi-mmc.c') diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c index 6310693f2ac0..e46bb4e404a8 100644 --- a/drivers/mmc/host/sunxi-mmc.c +++ b/drivers/mmc/host/sunxi-mmc.c @@ -245,6 +245,7 @@ struct sunxi_idma_des { struct sunxi_mmc_cfg { u32 idma_des_size_bits; + u32 idma_des_shift; const struct sunxi_mmc_clk_delay *clk_delays; /* does the IP block support autocalibration? */ @@ -344,7 +345,7 @@ static int sunxi_mmc_init_host(struct sunxi_mmc_host *host) /* Enable CEATA support */ mmc_writel(host, REG_FUNS, SDXC_CEATA_ON); /* Set DMA descriptor list base address */ - mmc_writel(host, REG_DLBA, host->sg_dma); + mmc_writel(host, REG_DLBA, host->sg_dma >> host->cfg->idma_des_shift); rval = mmc_readl(host, REG_GCTRL); rval |= SDXC_INTERRUPT_ENABLE_BIT; @@ -374,8 +375,10 @@ static void sunxi_mmc_init_idma_des(struct sunxi_mmc_host *host, next_desc += sizeof(struct sunxi_idma_des); pdes[i].buf_addr_ptr1 = - cpu_to_le32(sg_dma_address(&data->sg[i])); - pdes[i].buf_addr_ptr2 = cpu_to_le32((u32)next_desc); + cpu_to_le32(sg_dma_address(&data->sg[i]) >> + host->cfg->idma_des_shift); + pdes[i].buf_addr_ptr2 = cpu_to_le32((u32)next_desc >> + host->cfg->idma_des_shift); } pdes[0].config |= cpu_to_le32(SDXC_IDMAC_DES0_FD); @@ -1179,6 +1182,23 @@ static const struct sunxi_mmc_cfg sun50i_a64_emmc_cfg = { .needs_new_timings = true, }; +static const struct sunxi_mmc_cfg sun50i_a100_cfg = { + .idma_des_size_bits = 16, + .idma_des_shift = 2, + .clk_delays = NULL, + .can_calibrate = true, + .mask_data0 = true, + .needs_new_timings = true, +}; + +static const struct sunxi_mmc_cfg sun50i_a100_emmc_cfg = { + .idma_des_size_bits = 13, + .idma_des_shift = 2, + .clk_delays = NULL, + .can_calibrate = true, + .needs_new_timings = true, +}; + static const struct of_device_id sunxi_mmc_of_match[] = { { .compatible = "allwinner,sun4i-a10-mmc", .data = &sun4i_a10_cfg }, { .compatible = "allwinner,sun5i-a13-mmc", .data = &sun5i_a13_cfg }, @@ -1187,6 +1207,8 @@ static const struct of_device_id sunxi_mmc_of_match[] = { { .compatible = "allwinner,sun9i-a80-mmc", .data = &sun9i_a80_cfg }, { .compatible = "allwinner,sun50i-a64-mmc", .data = &sun50i_a64_cfg }, { .compatible = "allwinner,sun50i-a64-emmc", .data = &sun50i_a64_emmc_cfg }, + { .compatible = "allwinner,sun50i-a100-mmc", .data = &sun50i_a100_cfg }, + { .compatible = "allwinner,sun50i-a100-emmc", .data = &sun50i_a100_emmc_cfg }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, sunxi_mmc_of_match); -- cgit v1.2.3-58-ga151