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From:   Andre Przywara <andre.przywara@arm.com>
To:     Maxime Ripard <mripard@kernel.org>, Chen-Yu Tsai <wens@csie.org>,
        Jernej Skrabec <jernej.skrabec@siol.net>
Cc:     Icenowy Zheng <icenowy@aosc.xyz>,
        linux-arm-kernel@lists.infradead.org, linux-sunxi@googlegroups.com,
        Linus Walleij <linus.walleij@linaro.org>,
        Rob Herring <robh+dt@kernel.org>,
        Yangtao Li <frank@allwinnertech.com>,
        linux-kernel@vger.kernel.org,
        Andre Przywara <andre.przywara@arm.com>
Subject: [PATCH 6/8] mmc: sunxi: add support for A100 mmc controller
Date:   Wed,  2 Dec 2020 13:54:07 +0000
Message-Id: <20201202135409.13683-7-andre.przywara@arm.com>
In-Reply-To: <20201202135409.13683-1-andre.przywara@arm.com>
References: <20201202135409.13683-1-andre.przywara@arm.com>
Precedence: bulk

From: Yangtao Li <frank@allwinnertech.com>

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>
---
 drivers/mmc/host/sunxi-mmc.c | 28 +++++++++++++++++++++++++---
 1 file changed, 25 insertions(+), 3 deletions(-)

diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c
index fc62773602ec..1518b64112b7 100644
--- a/drivers/mmc/host/sunxi-mmc.c
+++ b/drivers/mmc/host/sunxi-mmc.c
@@ -244,6 +244,7 @@ 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? */
@@ -343,7 +344,7 @@ 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;
@@ -373,8 +374,10 @@ 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);
@@ -1178,6 +1181,23 @@ 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 },
@@ -1186,6 +1206,8 @@ 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);
-- 
2.17.5