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 <frank@allwinnertech.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Link: https://lore.kernel.org/r/20201211011934.6171-10-andre.przywara@arm.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

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);