text: /* SPDX-License-Identifier: GPL-2.0 */
  /*
   * Renesas Mobile SDHI
   *
   * Copyright (C) 2017 Horms Solutions Ltd., Simon Horman
   * Copyright (C) 2017-19 Renesas Electronics Corporation
   */
  
  #ifndef RENESAS_SDHI_H
  #define RENESAS_SDHI_H
  
  #include <linux/platform_device.h>
  #include "tmio_mmc.h"
  
  struct renesas_sdhi_scc {
  	unsigned long clk_rate;	/* clock rate for SDR104 */
  	u32 tap;		/* sampling clock position for SDR104/HS400 (8 TAP) */
  	u32 tap_hs400_4tap;	/* sampling clock position for HS400 (4 TAP) */
  };
  
  #define SDHI_FLAG_NEED_CLKH_FALLBACK	BIT(0)
  
  struct renesas_sdhi_of_data {
  	unsigned long tmio_flags;
  	u32	      tmio_ocr_mask;
  	unsigned long capabilities;
  	unsigned long capabilities2;
  	enum dma_slave_buswidth dma_buswidth;
  	dma_addr_t dma_rx_offset;
  	unsigned int bus_shift;
  	int scc_offset;
  	struct renesas_sdhi_scc *taps;
  	int taps_num;
  	unsigned int max_blk_count;
  	unsigned short max_segs;
  	unsigned long sdhi_flags;
  };
  
  #define SDHI_CALIB_TABLE_MAX 32
  
  struct renesas_sdhi_quirks {
  	bool hs400_disabled;
  	bool hs400_4taps;
  	u32 hs400_bad_taps;
  	const u8 (*hs400_calib_table)[SDHI_CALIB_TABLE_MAX];
  };
  
  struct renesas_sdhi_of_data_with_quirks {
  	const struct renesas_sdhi_of_data *of_data;
  	const struct renesas_sdhi_quirks *quirks;
  };
  
  struct tmio_mmc_dma {
  	enum dma_slave_buswidth dma_buswidth;
  	bool (*filter)(struct dma_chan *chan, void *arg);
  	void (*enable)(struct tmio_mmc_host *host, bool enable);
  	struct completion	dma_dataend;
  	struct tasklet_struct	dma_complete;
  };
  
  struct renesas_sdhi {
  	struct clk *clk;
  	struct clk *clkh;
  	struct clk *clk_cd;
  	struct tmio_mmc_data mmc_data;
  	struct tmio_mmc_dma dma_priv;
  	const struct renesas_sdhi_quirks *quirks;
  	struct pinctrl *pinctrl;
  	struct pinctrl_state *pins_default, *pins_uhs;
  	void __iomem *scc_ctl;
  	u32 scc_tappos;
  	u32 scc_tappos_hs400;
  	const u8 *adjust_hs400_calib_table;
  	bool needs_adjust_hs400;
  
  	/* Tuning values: 1 for success, 0 for failure */
  	DECLARE_BITMAP(taps, BITS_PER_LONG);
  	/* Sampling data comparison: 1 for match, 0 for mismatch */
  	DECLARE_BITMAP(smpcmp, BITS_PER_LONG);
  	unsigned int tap_num;
  	unsigned int tap_set;
  
  	struct reset_control *rstc;
  };
  
  #define host_to_priv(host) \
  	container_of((host)->pdata, struct renesas_sdhi, mmc_data)
  
  int renesas_sdhi_probe(struct platform_device *pdev,
  		       const struct tmio_mmc_dma_ops *dma_ops,
  		       const struct renesas_sdhi_of_data *of_data,
  		       const struct renesas_sdhi_quirks *quirks);
  int renesas_sdhi_remove(struct platform_device *pdev);
  #endif
  