1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Renesas Mobile SDHI 4 * 5 * Copyright (C) 2017 Horms Solutions Ltd., Simon Horman 6 * Copyright (C) 2017-19 Renesas Electronics Corporation 7 */ 8 9 #ifndef RENESAS_SDHI_H 10 #define RENESAS_SDHI_H 11 12 #include <linux/platform_device.h> 13 #include "tmio_mmc.h" 14 15 struct renesas_sdhi_scc { 16 unsigned long clk_rate; /* clock rate for SDR104 */ 17 u32 tap; /* sampling clock position for SDR104/HS400 (8 TAP) */ 18 u32 tap_hs400_4tap; /* sampling clock position for HS400 (4 TAP) */ 19 }; 20 21 struct renesas_sdhi_of_data { 22 unsigned long tmio_flags; 23 u32 tmio_ocr_mask; 24 unsigned long capabilities; 25 unsigned long capabilities2; 26 enum dma_slave_buswidth dma_buswidth; 27 dma_addr_t dma_rx_offset; 28 unsigned int bus_shift; 29 int scc_offset; 30 struct renesas_sdhi_scc *taps; 31 int taps_num; 32 unsigned int max_blk_count; 33 unsigned short max_segs; 34 }; 35 36 #define SDHI_CALIB_TABLE_MAX 32 37 38 struct renesas_sdhi_quirks { 39 bool hs400_disabled; 40 bool hs400_4taps; 41 u32 hs400_bad_taps; 42 const u8 (*hs400_calib_table)[SDHI_CALIB_TABLE_MAX]; 43 }; 44 45 struct renesas_sdhi_of_data_with_quirks { 46 const struct renesas_sdhi_of_data *of_data; 47 const struct renesas_sdhi_quirks *quirks; 48 }; 49 50 struct tmio_mmc_dma { 51 enum dma_slave_buswidth dma_buswidth; 52 bool (*filter)(struct dma_chan *chan, void *arg); 53 void (*enable)(struct tmio_mmc_host *host, bool enable); 54 struct completion dma_dataend; 55 struct tasklet_struct dma_complete; 56 }; 57 58 struct renesas_sdhi { 59 struct clk *clk; 60 struct clk *clk_cd; 61 struct tmio_mmc_data mmc_data; 62 struct tmio_mmc_dma dma_priv; 63 const struct renesas_sdhi_quirks *quirks; 64 struct pinctrl *pinctrl; 65 struct pinctrl_state *pins_default, *pins_uhs; 66 void __iomem *scc_ctl; 67 u32 scc_tappos; 68 u32 scc_tappos_hs400; 69 const u8 *adjust_hs400_calib_table; 70 bool needs_adjust_hs400; 71 72 /* Tuning values: 1 for success, 0 for failure */ 73 DECLARE_BITMAP(taps, BITS_PER_LONG); 74 /* Sampling data comparison: 1 for match, 0 for mismatch */ 75 DECLARE_BITMAP(smpcmp, BITS_PER_LONG); 76 unsigned int tap_num; 77 unsigned int tap_set; 78 79 struct reset_control *rstc; 80 }; 81 82 #define host_to_priv(host) \ 83 container_of((host)->pdata, struct renesas_sdhi, mmc_data) 84 85 int renesas_sdhi_probe(struct platform_device *pdev, 86 const struct tmio_mmc_dma_ops *dma_ops, 87 const struct renesas_sdhi_of_data *of_data, 88 const struct renesas_sdhi_quirks *quirks); 89 int renesas_sdhi_remove(struct platform_device *pdev); 90 #endif 91