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1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * Renesas Mobile SDHI4 *5 * Copyright (C) 2017 Horms Solutions Ltd., Simon Horman6 * Copyright (C) 2017-19 Renesas Electronics Corporation7 */8 9#ifndef RENESAS_SDHI_H10#define RENESAS_SDHI_H11 12#include <linux/dmaengine.h>13#include <linux/platform_device.h>14#include <linux/workqueue.h>15#include "tmio_mmc.h"16 17struct renesas_sdhi_scc {18 unsigned long clk_rate; /* clock rate for SDR104 */19 u32 tap; /* sampling clock position for SDR104/HS400 (8 TAP) */20 u32 tap_hs400_4tap; /* sampling clock position for HS400 (4 TAP) */21};22 23#define SDHI_FLAG_NEED_CLKH_FALLBACK BIT(0)24 25struct renesas_sdhi_of_data {26 unsigned long tmio_flags;27 u32 tmio_ocr_mask;28 unsigned long capabilities;29 unsigned long capabilities2;30 enum dma_slave_buswidth dma_buswidth;31 dma_addr_t dma_rx_offset;32 unsigned int bus_shift;33 int scc_offset;34 struct renesas_sdhi_scc *taps;35 int taps_num;36 unsigned int max_blk_count;37 unsigned short max_segs;38 unsigned long sdhi_flags;39};40 41#define SDHI_CALIB_TABLE_MAX 3242 43#define sdhi_has_quirk(p, q) ((p)->quirks && (p)->quirks->q)44 45struct renesas_sdhi_quirks {46 bool hs400_disabled;47 bool hs400_4taps;48 bool fixed_addr_mode;49 bool dma_one_rx_only;50 bool manual_tap_correction;51 bool old_info1_layout;52 u32 hs400_bad_taps;53 const u8 (*hs400_calib_table)[SDHI_CALIB_TABLE_MAX];54};55 56struct renesas_sdhi_of_data_with_quirks {57 const struct renesas_sdhi_of_data *of_data;58 const struct renesas_sdhi_quirks *quirks;59};60 61/* We want both end_flags to be set before we mark DMA as finished */62#define SDHI_DMA_END_FLAG_DMA 063#define SDHI_DMA_END_FLAG_ACCESS 164 65struct renesas_sdhi_dma {66 unsigned long end_flags;67 enum dma_slave_buswidth dma_buswidth;68 dma_filter_fn filter;69 void (*enable)(struct tmio_mmc_host *host, bool enable);70 struct completion dma_dataend;71 struct work_struct dma_complete;72};73 74struct renesas_sdhi {75 struct clk *clk;76 struct clk *clkh;77 struct clk *clk_cd;78 struct tmio_mmc_data mmc_data;79 struct renesas_sdhi_dma dma_priv;80 const struct renesas_sdhi_quirks *quirks;81 struct pinctrl *pinctrl;82 struct pinctrl_state *pins_default, *pins_uhs;83 void __iomem *scc_ctl;84 u32 scc_tappos;85 u32 scc_tappos_hs400;86 const u8 *adjust_hs400_calib_table;87 bool needs_adjust_hs400;88 89 /* Tuning values: 1 for success, 0 for failure */90 DECLARE_BITMAP(taps, BITS_PER_LONG);91 /* Sampling data comparison: 1 for match, 0 for mismatch */92 DECLARE_BITMAP(smpcmp, BITS_PER_LONG);93 unsigned int tap_num;94 unsigned int tap_set;95 96 struct reset_control *rstc;97 struct tmio_mmc_host *host;98};99 100#define host_to_priv(host) \101 container_of((host)->pdata, struct renesas_sdhi, mmc_data)102 103int renesas_sdhi_probe(struct platform_device *pdev,104 const struct tmio_mmc_dma_ops *dma_ops,105 const struct renesas_sdhi_of_data *of_data,106 const struct renesas_sdhi_quirks *quirks);107void renesas_sdhi_remove(struct platform_device *pdev);108#endif109