mmc: sunxi: Hack up the driver for the D1

Signed-off-by: Samuel Holland <samuel@sholland.org>

arch/arm/include/asm/arch-sunxi/mmc.h

@@ -1,139 +1,8 @@
 /* SPDX-License-Identifier: GPL-2.0+ */
-/*
- * (C) Copyright 2007-2011
- * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
- * Aaron <leafy.myeh@allwinnertech.com>
- *
- * MMC register definition for allwinner sunxi platform.
- */
 
-#ifndef _SUNXI_MMC_H
+#ifndef _ARCH_SUNXI_MMC_H
-#define _SUNXI_MMC_H
+#define _ARCH_SUNXI_MMC_H
-
-#include <linux/types.h>
-
-struct sunxi_mmc {
-	u32 gctrl;		/* 0x00 global control */
-	u32 clkcr;		/* 0x04 clock control */
-	u32 timeout;		/* 0x08 time out */
-	u32 width;		/* 0x0c bus width */
-	u32 blksz;		/* 0x10 block size */
-	u32 bytecnt;		/* 0x14 byte count */
-	u32 cmd;		/* 0x18 command */
-	u32 arg;		/* 0x1c argument */
-	u32 resp0;		/* 0x20 response 0 */
-	u32 resp1;		/* 0x24 response 1 */
-	u32 resp2;		/* 0x28 response 2 */
-	u32 resp3;		/* 0x2c response 3 */
-	u32 imask;		/* 0x30 interrupt mask */
-	u32 mint;		/* 0x34 masked interrupt status */
-	u32 rint;		/* 0x38 raw interrupt status */
-	u32 status;		/* 0x3c status */
-	u32 ftrglevel;		/* 0x40 FIFO threshold watermark*/
-	u32 funcsel;		/* 0x44 function select */
-	u32 cbcr;		/* 0x48 CIU byte count */
-	u32 bbcr;		/* 0x4c BIU byte count */
-	u32 dbgc;		/* 0x50 debug enable */
-	u32 res0;		/* 0x54 reserved */
-	u32 a12a;		/* 0x58 Auto command 12 argument */
-	u32 ntsr;		/* 0x5c	New timing set register */
-	u32 res1[8];
-	u32 dmac;		/* 0x80 internal DMA control */
-	u32 dlba;		/* 0x84 internal DMA descr list base address */
-	u32 idst;		/* 0x88 internal DMA status */
-	u32 idie;		/* 0x8c internal DMA interrupt enable */
-	u32 chda;		/* 0x90 */
-	u32 cbda;		/* 0x94 */
-	u32 res2[26];
-#if defined(CONFIG_SUNXI_GEN_SUN6I) || defined(CONFIG_SUN50I_GEN_H6)
-	u32 res3[17];
-	u32 samp_dl;
-	u32 res4[46];
-#endif
-	u32 fifo;		/* 0x100 / 0x200 FIFO access address */
-};
-
-#define SUNXI_MMC_CLK_POWERSAVE		(0x1 << 17)
-#define SUNXI_MMC_CLK_ENABLE		(0x1 << 16)
-#define SUNXI_MMC_CLK_DIVIDER_MASK	(0xff)
-
-#define SUNXI_MMC_GCTRL_SOFT_RESET	(0x1 << 0)
-#define SUNXI_MMC_GCTRL_FIFO_RESET	(0x1 << 1)
-#define SUNXI_MMC_GCTRL_DMA_RESET	(0x1 << 2)
-#define SUNXI_MMC_GCTRL_RESET		(SUNXI_MMC_GCTRL_SOFT_RESET|\
-					 SUNXI_MMC_GCTRL_FIFO_RESET|\
-					 SUNXI_MMC_GCTRL_DMA_RESET)
-#define SUNXI_MMC_GCTRL_DMA_ENABLE	(0x1 << 5)
-#define SUNXI_MMC_GCTRL_ACCESS_BY_AHB   (0x1 << 31)
-
-#define SUNXI_MMC_CMD_RESP_EXPIRE	(0x1 << 6)
-#define SUNXI_MMC_CMD_LONG_RESPONSE	(0x1 << 7)
-#define SUNXI_MMC_CMD_CHK_RESPONSE_CRC	(0x1 << 8)
-#define SUNXI_MMC_CMD_DATA_EXPIRE	(0x1 << 9)
-#define SUNXI_MMC_CMD_WRITE		(0x1 << 10)
-#define SUNXI_MMC_CMD_AUTO_STOP		(0x1 << 12)
-#define SUNXI_MMC_CMD_WAIT_PRE_OVER	(0x1 << 13)
-#define SUNXI_MMC_CMD_SEND_INIT_SEQ	(0x1 << 15)
-#define SUNXI_MMC_CMD_UPCLK_ONLY	(0x1 << 21)
-#define SUNXI_MMC_CMD_START		(0x1 << 31)
-
-#define SUNXI_MMC_RINT_RESP_ERROR		(0x1 << 1)
-#define SUNXI_MMC_RINT_COMMAND_DONE		(0x1 << 2)
-#define SUNXI_MMC_RINT_DATA_OVER		(0x1 << 3)
-#define SUNXI_MMC_RINT_TX_DATA_REQUEST		(0x1 << 4)
-#define SUNXI_MMC_RINT_RX_DATA_REQUEST		(0x1 << 5)
-#define SUNXI_MMC_RINT_RESP_CRC_ERROR		(0x1 << 6)
-#define SUNXI_MMC_RINT_DATA_CRC_ERROR		(0x1 << 7)
-#define SUNXI_MMC_RINT_RESP_TIMEOUT		(0x1 << 8)
-#define SUNXI_MMC_RINT_DATA_TIMEOUT		(0x1 << 9)
-#define SUNXI_MMC_RINT_VOLTAGE_CHANGE_DONE	(0x1 << 10)
-#define SUNXI_MMC_RINT_FIFO_RUN_ERROR		(0x1 << 11)
-#define SUNXI_MMC_RINT_HARD_WARE_LOCKED		(0x1 << 12)
-#define SUNXI_MMC_RINT_START_BIT_ERROR		(0x1 << 13)
-#define SUNXI_MMC_RINT_AUTO_COMMAND_DONE	(0x1 << 14)
-#define SUNXI_MMC_RINT_END_BIT_ERROR		(0x1 << 15)
-#define SUNXI_MMC_RINT_SDIO_INTERRUPT		(0x1 << 16)
-#define SUNXI_MMC_RINT_CARD_INSERT		(0x1 << 30)
-#define SUNXI_MMC_RINT_CARD_REMOVE		(0x1 << 31)
-#define SUNXI_MMC_RINT_INTERRUPT_ERROR_BIT      \
-	(SUNXI_MMC_RINT_RESP_ERROR |		\
-	 SUNXI_MMC_RINT_RESP_CRC_ERROR |	\
-	 SUNXI_MMC_RINT_DATA_CRC_ERROR |	\
-	 SUNXI_MMC_RINT_RESP_TIMEOUT |		\
-	 SUNXI_MMC_RINT_DATA_TIMEOUT |		\
-	 SUNXI_MMC_RINT_VOLTAGE_CHANGE_DONE |	\
-	 SUNXI_MMC_RINT_FIFO_RUN_ERROR |	\
-	 SUNXI_MMC_RINT_HARD_WARE_LOCKED |	\
-	 SUNXI_MMC_RINT_START_BIT_ERROR |	\
-	 SUNXI_MMC_RINT_END_BIT_ERROR) /* 0xbfc2 */
-#define SUNXI_MMC_RINT_INTERRUPT_DONE_BIT	\
-	(SUNXI_MMC_RINT_AUTO_COMMAND_DONE |	\
-	 SUNXI_MMC_RINT_DATA_OVER |		\
-	 SUNXI_MMC_RINT_COMMAND_DONE |		\
-	 SUNXI_MMC_RINT_VOLTAGE_CHANGE_DONE)
-
-#define SUNXI_MMC_STATUS_RXWL_FLAG		(0x1 << 0)
-#define SUNXI_MMC_STATUS_TXWL_FLAG		(0x1 << 1)
-#define SUNXI_MMC_STATUS_FIFO_EMPTY		(0x1 << 2)
-#define SUNXI_MMC_STATUS_FIFO_FULL		(0x1 << 3)
-#define SUNXI_MMC_STATUS_CARD_PRESENT		(0x1 << 8)
-#define SUNXI_MMC_STATUS_CARD_DATA_BUSY		(0x1 << 9)
-#define SUNXI_MMC_STATUS_DATA_FSM_BUSY		(0x1 << 10)
-#define SUNXI_MMC_STATUS_FIFO_LEVEL(reg)	(((reg) >> 17) & 0x3fff)
-
-#define SUNXI_MMC_NTSR_MODE_SEL_NEW		(0x1 << 31)
-
-#define SUNXI_MMC_IDMAC_RESET		(0x1 << 0)
-#define SUNXI_MMC_IDMAC_FIXBURST	(0x1 << 1)
-#define SUNXI_MMC_IDMAC_ENABLE		(0x1 << 7)
-
-#define SUNXI_MMC_IDIE_TXIRQ		(0x1 << 0)
-#define SUNXI_MMC_IDIE_RXIRQ		(0x1 << 1)
-
-#define SUNXI_MMC_COMMON_CLK_GATE		(1 << 16)
-#define SUNXI_MMC_COMMON_RESET			(1 << 18)
-
-#define SUNXI_MMC_CAL_DL_SW_EN		(0x1 << 7)
 
 struct mmc *sunxi_mmc_init(int sdc_no);
-#endif /* _SUNXI_MMC_H */
+
+#endif /* _ARCH_SUNXI_MMC_H */

arch/riscv/include/asm/io.h

@@ -114,6 +114,7 @@ static inline u16 readw(const volatile void __iomem *addr)
 	return val;
 }
 
+#define readl_relaxed readl
 static inline u32 readl(const volatile void __iomem *addr)
 {
 	u32	val;

drivers/mmc/Kconfig

@@ -727,7 +727,8 @@ config ZYNQ_HISPD_BROKEN
 
 config MMC_SUNXI
 	bool "Allwinner sunxi SD/MMC Host Controller support"
-	depends on ARCH_SUNXI && !UART0_PORT_F
+	depends on (ARCH_SUNXI || TARGET_SUNXI) && !UART0_PORT_F
+	depends on DM_GPIO || !DM_MMC
 	default y
 	help
 	  This selects support for the SD/MMC Host Controller on

drivers/mmc/sunxi_mmc.c

@@ -17,15 +17,34 @@
 #include <reset.h>
 #include <asm/gpio.h>
 #include <asm/io.h>
+#if !CONFIG_IS_ENABLED(DM_MMC)
 #include <asm/arch/clock.h>
 #include <asm/arch/cpu.h>
 #include <asm/arch/mmc.h>
+#endif
 #include <linux/delay.h>
 
+#include "sunxi_mmc.h"
+
 #ifndef CCM_MMC_CTRL_MODE_SEL_NEW
 #define CCM_MMC_CTRL_MODE_SEL_NEW	0
 #endif
 
+#include "../../arch/arm/include/asm/arch-sunxi/clock_sun50i_h6.h"
+
+unsigned int clock_get_pll6(void)
+{
+	struct sunxi_ccm_reg *const ccm =
+		(struct sunxi_ccm_reg *)0x2001000UL;
+
+	uint32_t rval = readl(&ccm->pll6_cfg);
+	int n = ((rval & CCM_PLL6_CTRL_N_MASK) >> CCM_PLL6_CTRL_N_SHIFT) + 1;
+	int m = ((rval >> 1) & 0x1) + 1;
+	int p0 = ((rval >> 16) & 0x7) + 1;
+	/* The register defines PLL6-2X, not plain PLL6 */
+	return 24000000 / n / m / p0;
+}
+
 struct sunxi_mmc_plat {
 	struct mmc_config cfg;
 	struct mmc mmc;
@@ -113,7 +132,8 @@ static bool sunxi_mmc_can_calibrate(void)
 	return IS_ENABLED(CONFIG_MACH_SUN50I) ||
 	       IS_ENABLED(CONFIG_MACH_SUN50I_H5) ||
 	       IS_ENABLED(CONFIG_SUN50I_GEN_H6) ||
-	       IS_ENABLED(CONFIG_MACH_SUN8I_R40);
+	       IS_ENABLED(CONFIG_MACH_SUN8I_R40) ||
+	       IS_ENABLED(CONFIG_MACH_SUN20I);
 }
 
 static int mmc_set_mod_clk(struct sunxi_mmc_priv *priv, unsigned int hz)
@@ -247,7 +267,7 @@ static int mmc_config_clock(struct sunxi_mmc_priv *priv, struct mmc *mmc)
 	rval &= ~SUNXI_MMC_CLK_DIVIDER_MASK;
 	writel(rval, &priv->reg->clkcr);
 
-#if defined(CONFIG_SUNXI_GEN_SUN6I) || defined(CONFIG_SUN50I_GEN_H6)
+#if defined(CONFIG_SUNXI_GEN_SUN6I) || defined(CONFIG_SUN50I_GEN_H6) || defined(CONFIG_MACH_SUN20I)
 	/* A64 supports calibration of delays on MMC controller and we
 	 * have to set delay of zero before starting calibration.
 	 * Allwinner BSP driver sets a delay only in the case of
@@ -686,6 +706,7 @@ static int sunxi_mmc_probe(struct udevice *dev)
 		return ret;
 	ccu_reg = (u32 *)(uintptr_t)ofnode_get_addr(args.node);
 
+#define SUNXI_MMC0_BASE 0x4020000
 	priv->mmc_no = ((uintptr_t)priv->reg - SUNXI_MMC0_BASE) / 0x1000;
 	priv->mclkreg = (void *)ccu_reg + get_mclk_offset() + priv->mmc_no * 4;
 
@@ -727,6 +748,7 @@ static const struct udevice_id sunxi_mmc_ids[] = {
 	{ .compatible = "allwinner,sun7i-a20-mmc" },
 	{ .compatible = "allwinner,sun8i-a83t-emmc" },
 	{ .compatible = "allwinner,sun9i-a80-mmc" },
+	{ .compatible = "allwinner,sun20i-d1-mmc" },
 	{ .compatible = "allwinner,sun50i-a64-mmc" },
 	{ .compatible = "allwinner,sun50i-a64-emmc" },
 	{ .compatible = "allwinner,sun50i-h6-mmc" },

drivers/mmc/sunxi_mmc.h

@@ -0,0 +1,136 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * (C) Copyright 2007-2011
+ * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
+ * Aaron <leafy.myeh@allwinnertech.com>
+ *
+ * MMC register definition for allwinner sunxi platform.
+ */
+
+#ifndef _SUNXI_MMC_H
+#define _SUNXI_MMC_H
+
+#include <linux/types.h>
+
+struct sunxi_mmc {
+	u32 gctrl;		/* 0x00 global control */
+	u32 clkcr;		/* 0x04 clock control */
+	u32 timeout;		/* 0x08 time out */
+	u32 width;		/* 0x0c bus width */
+	u32 blksz;		/* 0x10 block size */
+	u32 bytecnt;		/* 0x14 byte count */
+	u32 cmd;		/* 0x18 command */
+	u32 arg;		/* 0x1c argument */
+	u32 resp0;		/* 0x20 response 0 */
+	u32 resp1;		/* 0x24 response 1 */
+	u32 resp2;		/* 0x28 response 2 */
+	u32 resp3;		/* 0x2c response 3 */
+	u32 imask;		/* 0x30 interrupt mask */
+	u32 mint;		/* 0x34 masked interrupt status */
+	u32 rint;		/* 0x38 raw interrupt status */
+	u32 status;		/* 0x3c status */
+	u32 ftrglevel;		/* 0x40 FIFO threshold watermark*/
+	u32 funcsel;		/* 0x44 function select */
+	u32 cbcr;		/* 0x48 CIU byte count */
+	u32 bbcr;		/* 0x4c BIU byte count */
+	u32 dbgc;		/* 0x50 debug enable */
+	u32 res0;		/* 0x54 reserved */
+	u32 a12a;		/* 0x58 Auto command 12 argument */
+	u32 ntsr;		/* 0x5c	New timing set register */
+	u32 res1[8];
+	u32 dmac;		/* 0x80 internal DMA control */
+	u32 dlba;		/* 0x84 internal DMA descr list base address */
+	u32 idst;		/* 0x88 internal DMA status */
+	u32 idie;		/* 0x8c internal DMA interrupt enable */
+	u32 chda;		/* 0x90 */
+	u32 cbda;		/* 0x94 */
+	u32 res2[26];
+	u32 res3[17];
+	u32 samp_dl;
+	u32 res4[46];
+	u32 fifo;		/* 0x100 / 0x200 FIFO access address */
+};
+
+#define SUNXI_MMC_CLK_POWERSAVE		(0x1 << 17)
+#define SUNXI_MMC_CLK_ENABLE		(0x1 << 16)
+#define SUNXI_MMC_CLK_DIVIDER_MASK	(0xff)
+
+#define SUNXI_MMC_GCTRL_SOFT_RESET	(0x1 << 0)
+#define SUNXI_MMC_GCTRL_FIFO_RESET	(0x1 << 1)
+#define SUNXI_MMC_GCTRL_DMA_RESET	(0x1 << 2)
+#define SUNXI_MMC_GCTRL_RESET		(SUNXI_MMC_GCTRL_SOFT_RESET|\
+					 SUNXI_MMC_GCTRL_FIFO_RESET|\
+					 SUNXI_MMC_GCTRL_DMA_RESET)
+#define SUNXI_MMC_GCTRL_DMA_ENABLE	(0x1 << 5)
+#define SUNXI_MMC_GCTRL_ACCESS_BY_AHB   (0x1 << 31)
+
+#define SUNXI_MMC_CMD_RESP_EXPIRE	(0x1 << 6)
+#define SUNXI_MMC_CMD_LONG_RESPONSE	(0x1 << 7)
+#define SUNXI_MMC_CMD_CHK_RESPONSE_CRC	(0x1 << 8)
+#define SUNXI_MMC_CMD_DATA_EXPIRE	(0x1 << 9)
+#define SUNXI_MMC_CMD_WRITE		(0x1 << 10)
+#define SUNXI_MMC_CMD_AUTO_STOP		(0x1 << 12)
+#define SUNXI_MMC_CMD_WAIT_PRE_OVER	(0x1 << 13)
+#define SUNXI_MMC_CMD_SEND_INIT_SEQ	(0x1 << 15)
+#define SUNXI_MMC_CMD_UPCLK_ONLY	(0x1 << 21)
+#define SUNXI_MMC_CMD_START		(0x1 << 31)
+
+#define SUNXI_MMC_RINT_RESP_ERROR		(0x1 << 1)
+#define SUNXI_MMC_RINT_COMMAND_DONE		(0x1 << 2)
+#define SUNXI_MMC_RINT_DATA_OVER		(0x1 << 3)
+#define SUNXI_MMC_RINT_TX_DATA_REQUEST		(0x1 << 4)
+#define SUNXI_MMC_RINT_RX_DATA_REQUEST		(0x1 << 5)
+#define SUNXI_MMC_RINT_RESP_CRC_ERROR		(0x1 << 6)
+#define SUNXI_MMC_RINT_DATA_CRC_ERROR		(0x1 << 7)
+#define SUNXI_MMC_RINT_RESP_TIMEOUT		(0x1 << 8)
+#define SUNXI_MMC_RINT_DATA_TIMEOUT		(0x1 << 9)
+#define SUNXI_MMC_RINT_VOLTAGE_CHANGE_DONE	(0x1 << 10)
+#define SUNXI_MMC_RINT_FIFO_RUN_ERROR		(0x1 << 11)
+#define SUNXI_MMC_RINT_HARD_WARE_LOCKED		(0x1 << 12)
+#define SUNXI_MMC_RINT_START_BIT_ERROR		(0x1 << 13)
+#define SUNXI_MMC_RINT_AUTO_COMMAND_DONE	(0x1 << 14)
+#define SUNXI_MMC_RINT_END_BIT_ERROR		(0x1 << 15)
+#define SUNXI_MMC_RINT_SDIO_INTERRUPT		(0x1 << 16)
+#define SUNXI_MMC_RINT_CARD_INSERT		(0x1 << 30)
+#define SUNXI_MMC_RINT_CARD_REMOVE		(0x1 << 31)
+#define SUNXI_MMC_RINT_INTERRUPT_ERROR_BIT      \
+	(SUNXI_MMC_RINT_RESP_ERROR |		\
+	 SUNXI_MMC_RINT_RESP_CRC_ERROR |	\
+	 SUNXI_MMC_RINT_DATA_CRC_ERROR |	\
+	 SUNXI_MMC_RINT_RESP_TIMEOUT |		\
+	 SUNXI_MMC_RINT_DATA_TIMEOUT |		\
+	 SUNXI_MMC_RINT_VOLTAGE_CHANGE_DONE |	\
+	 SUNXI_MMC_RINT_FIFO_RUN_ERROR |	\
+	 SUNXI_MMC_RINT_HARD_WARE_LOCKED |	\
+	 SUNXI_MMC_RINT_START_BIT_ERROR |	\
+	 SUNXI_MMC_RINT_END_BIT_ERROR) /* 0xbfc2 */
+#define SUNXI_MMC_RINT_INTERRUPT_DONE_BIT	\
+	(SUNXI_MMC_RINT_AUTO_COMMAND_DONE |	\
+	 SUNXI_MMC_RINT_DATA_OVER |		\
+	 SUNXI_MMC_RINT_COMMAND_DONE |		\
+	 SUNXI_MMC_RINT_VOLTAGE_CHANGE_DONE)
+
+#define SUNXI_MMC_STATUS_RXWL_FLAG		(0x1 << 0)
+#define SUNXI_MMC_STATUS_TXWL_FLAG		(0x1 << 1)
+#define SUNXI_MMC_STATUS_FIFO_EMPTY		(0x1 << 2)
+#define SUNXI_MMC_STATUS_FIFO_FULL		(0x1 << 3)
+#define SUNXI_MMC_STATUS_CARD_PRESENT		(0x1 << 8)
+#define SUNXI_MMC_STATUS_CARD_DATA_BUSY		(0x1 << 9)
+#define SUNXI_MMC_STATUS_DATA_FSM_BUSY		(0x1 << 10)
+#define SUNXI_MMC_STATUS_FIFO_LEVEL(reg)	(((reg) >> 17) & 0x3fff)
+
+#define SUNXI_MMC_NTSR_MODE_SEL_NEW		(0x1 << 31)
+
+#define SUNXI_MMC_IDMAC_RESET		(0x1 << 0)
+#define SUNXI_MMC_IDMAC_FIXBURST	(0x1 << 1)
+#define SUNXI_MMC_IDMAC_ENABLE		(0x1 << 7)
+
+#define SUNXI_MMC_IDIE_TXIRQ		(0x1 << 0)
+#define SUNXI_MMC_IDIE_RXIRQ		(0x1 << 1)
+
+#define SUNXI_MMC_COMMON_CLK_GATE		(1 << 16)
+#define SUNXI_MMC_COMMON_RESET			(1 << 18)
+
+#define SUNXI_MMC_CAL_DL_SW_EN		(0x1 << 7)
+
+#endif /* _SUNXI_MMC_H */