/* 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/dmaengine.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 #define sdhi_has_quirk(p, q) ((p)->quirks && (p)->quirks->q) struct renesas_sdhi_quirks { bool hs400_disabled; bool hs400_4taps; bool fixed_addr_mode; bool dma_one_rx_only; bool manual_tap_correction; bool old_info1_layout; 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; }; /* We want both end_flags to be set before we mark DMA as finished */ #define SDHI_DMA_END_FLAG_DMA 0 #define SDHI_DMA_END_FLAG_ACCESS 1 struct renesas_sdhi_dma { unsigned long end_flags; enum dma_slave_buswidth dma_buswidth; dma_filter_fn filter; 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 renesas_sdhi_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); void renesas_sdhi_remove(struct platform_device *pdev); #endif