Merge tag 'u-boot-atmel-2021.10-a' of https://source.denx.de/u-boot/custodians/u...

[J-u-boot.git] / include / dwmmc.h

diff --git a/include/dwmmc.h b/include/dwmmc.h
index 25cf42c606c993331ee82cfc314df27524b108d3..5fc8ed8395f5b9cf0b2f579299b93915aede72a5 100644 (file)
--- a/include/dwmmc.h
+++ b/include/dwmmc.h
@@ -1,15 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * (C) Copyright 2012 SAMSUNG Electronics
  * Jaehoon Chung <[email protected]>
- *
- * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #ifndef __DWMMC_HW_H
 #define __DWMMC_HW_H
 
+#include <asm/cache.h>
 #include <asm/io.h>
 #include <mmc.h>
+#include <linux/bitops.h>
 
 #define DWMCI_CTRL             0x000
 #define        DWMCI_PWREN             0x004
@@ -57,6 +58,7 @@
 #define DWMCI_INTMSK_DTO       (1 << 3)
 #define DWMCI_INTMSK_TXDR      (1 << 4)
 #define DWMCI_INTMSK_RXDR      (1 << 5)
+#define DWMCI_INTMSK_RCRC      (1 << 6)
 #define DWMCI_INTMSK_DCRC      (1 << 7)
 #define DWMCI_INTMSK_RTO       (1 << 8)
 #define DWMCI_INTMSK_DRTO      (1 << 9)
@@ -104,7 +106,11 @@
 #define DWMCI_CTYPE_8BIT       (1 << 16)
 
 /* Status Register */
+#define DWMCI_FIFO_EMPTY       (1 << 2)
+#define DWMCI_FIFO_FULL                (1 << 3)
 #define DWMCI_BUSY             (1 << 9)
+#define DWMCI_FIFO_MASK                0x1fff
+#define DWMCI_FIFO_SHIFT       17
 
 /* FIFOTH Register */
 #define MSIZE(x)               ((x) << 28)
@@ -126,6 +132,13 @@
 /* UHS register */
 #define DWMCI_DDR_MODE (1 << 16)
 
+/* Internal IDMAC interrupt defines */
+#define DWMCI_IDINTEN_RI               BIT(1)
+#define DWMCI_IDINTEN_TI               BIT(0)
+
+#define DWMCI_IDINTEN_MASK     (DWMCI_IDINTEN_TI | \
+                                DWMCI_IDINTEN_RI)
+
 /* quirks */
 #define DWMCI_QUIRK_DISABLE_SMU                (1 << 0)
 
@@ -161,7 +174,7 @@ struct dwmci_host {
        struct mmc *mmc;
        void *priv;
 
-       void (*clksel)(struct dwmci_host *host);
+       int (*clksel)(struct dwmci_host *host);
        void (*board_init)(struct dwmci_host *host);
 
        /**
@@ -178,8 +191,12 @@ struct dwmci_host {
         * @freq:       Frequency the host is trying to achieve
         */
        unsigned int (*get_mmc_clk)(struct dwmci_host *host, uint freq);
-
+#ifndef CONFIG_BLK
        struct mmc_config cfg;
+#endif
+
+       /* use fifo mode to read and write data */
+       bool fifo_mode;
 };
 
 struct dwmci_idmac {
@@ -218,5 +235,77 @@ static inline u8 dwmci_readb(struct dwmci_host *host, int reg)
        return readb(host->ioaddr + reg);
 }
 
+#ifdef CONFIG_BLK
+/**
+ * dwmci_setup_cfg() - Set up the configuration for DWMMC
+ *
+ * This is used to set up a DWMMC device when you are using CONFIG_BLK.
+ *
+ * This should be called from your MMC driver's probe() method once you have
+ * the information required.
+ *
+ * Generally your driver will have a platform data structure which holds both
+ * the configuration (struct mmc_config) and the MMC device info (struct mmc).
+ * For example:
+ *
+ * struct rockchip_mmc_plat {
+ *     struct mmc_config cfg;
+ *     struct mmc mmc;
+ * };
+ *
+ * ...
+ *
+ * Inside U_BOOT_DRIVER():
+ *     .plat_auto      = sizeof(struct rockchip_mmc_plat),
+ *
+ * To access platform data:
+ *     struct rockchip_mmc_plat *plat = dev_get_plat(dev);
+ *
+ * See rockchip_dw_mmc.c for an example.
+ *
+ * @cfg:       Configuration structure to fill in (generally &plat->mmc)
+ * @host:      DWMMC host
+ * @max_clk:   Maximum supported clock speed in HZ (e.g. 150000000)
+ * @min_clk:   Minimum supported clock speed in HZ (e.g. 400000)
+ */
+void dwmci_setup_cfg(struct mmc_config *cfg, struct dwmci_host *host,
+               u32 max_clk, u32 min_clk);
+
+/**
+ * dwmci_bind() - Set up a new MMC block device
+ *
+ * This is used to set up a DWMMC block device when you are using CONFIG_BLK.
+ * It should be called from your driver's bind() method.
+ *
+ * See rockchip_dw_mmc.c for an example.
+ *
+ * @dev:       Device to set up
+ * @mmc:       Pointer to mmc structure (normally &plat->mmc)
+ * @cfg:       Empty configuration structure (generally &plat->cfg). This is
+ *             normally all zeroes at this point. The only purpose of passing
+ *             this in is to set mmc->cfg to it.
+ * @return 0 if OK, -ve if the block device could not be created
+ */
+int dwmci_bind(struct udevice *dev, struct mmc *mmc, struct mmc_config *cfg);
+
+#else
+/**
+ * add_dwmci() - Add a new DWMMC interface
+ *
+ * This is used when you are not using CONFIG_BLK. Convert your driver over!
+ *
+ * @host:      DWMMC host structure
+ * @max_clk:   Maximum supported clock speed in HZ (e.g. 150000000)
+ * @min_clk:   Minimum supported clock speed in HZ (e.g. 400000)
+ * @return 0 if OK, -ve on error
+ */
 int add_dwmci(struct dwmci_host *host, u32 max_clk, u32 min_clk);
+#endif /* !CONFIG_BLK */
+
+#ifdef CONFIG_DM_MMC
+/* Export the operations to drivers */
+int dwmci_probe(struct udevice *dev);
+extern const struct dm_mmc_ops dm_dwmci_ops;
+#endif
+
 #endif /* __DWMMC_HW_H */