1f707079dSWolfram Sang /* SPDX-License-Identifier: GPL-2.0 */ 2c2a96987SSimon Horman /* 3c2a96987SSimon Horman * Renesas Mobile SDHI 4c2a96987SSimon Horman * 5c2a96987SSimon Horman * Copyright (C) 2017 Horms Solutions Ltd., Simon Horman 6f49bdcdeSWolfram Sang * Copyright (C) 2017-19 Renesas Electronics Corporation 7c2a96987SSimon Horman */ 8c2a96987SSimon Horman 9c2a96987SSimon Horman #ifndef RENESAS_SDHI_H 10c2a96987SSimon Horman #define RENESAS_SDHI_H 11c2a96987SSimon Horman 129d08428aSSimon Horman #include <linux/platform_device.h> 13c2a96987SSimon Horman #include "tmio_mmc.h" 14c2a96987SSimon Horman 159d08428aSSimon Horman struct renesas_sdhi_scc { 169d08428aSSimon Horman unsigned long clk_rate; /* clock rate for SDR104 */ 17c1a49782SWolfram Sang u32 tap; /* sampling clock position for SDR104/HS400 (8 TAP) */ 18c1a49782SWolfram Sang u32 tap_hs400_4tap; /* sampling clock position for HS400 (4 TAP) */ 199d08428aSSimon Horman }; 209d08428aSSimon Horman 21627151b4SWolfram Sang #define SDHI_FLAG_NEED_CLKH_FALLBACK BIT(0) 22627151b4SWolfram Sang 239d08428aSSimon Horman struct renesas_sdhi_of_data { 249d08428aSSimon Horman unsigned long tmio_flags; 259d08428aSSimon Horman u32 tmio_ocr_mask; 269d08428aSSimon Horman unsigned long capabilities; 279d08428aSSimon Horman unsigned long capabilities2; 289d08428aSSimon Horman enum dma_slave_buswidth dma_buswidth; 299d08428aSSimon Horman dma_addr_t dma_rx_offset; 30f2218db8SSimon Horman unsigned int bus_shift; 319d08428aSSimon Horman int scc_offset; 329d08428aSSimon Horman struct renesas_sdhi_scc *taps; 339d08428aSSimon Horman int taps_num; 34603aa14dSYoshihiro Shimoda unsigned int max_blk_count; 35603aa14dSYoshihiro Shimoda unsigned short max_segs; 36627151b4SWolfram Sang unsigned long sdhi_flags; 379d08428aSSimon Horman }; 389d08428aSSimon Horman 39ce6f92c2SWolfram Sang #define SDHI_CALIB_TABLE_MAX 32 40ce6f92c2SWolfram Sang 4148c917faSWolfram Sang #define sdhi_has_quirk(p, q) ((p)->quirks && (p)->quirks->q) 4248c917faSWolfram Sang 437af08206SWolfram Sang struct renesas_sdhi_quirks { 447af08206SWolfram Sang bool hs400_disabled; 457af08206SWolfram Sang bool hs400_4taps; 46c0a43968SWolfram Sang bool fixed_addr_mode; 47bcfa7f15SWolfram Sang bool dma_one_rx_only; 4800e8c11cSTakeshi Saito bool manual_tap_correction; 49ec9e80aeSWolfram Sang bool old_info1_layout; 50a38c078fSTakeshi Saito u32 hs400_bad_taps; 51ce6f92c2SWolfram Sang const u8 (*hs400_calib_table)[SDHI_CALIB_TABLE_MAX]; 527af08206SWolfram Sang }; 537af08206SWolfram Sang 5471b7597cSYoshihiro Shimoda struct renesas_sdhi_of_data_with_quirks { 5571b7597cSYoshihiro Shimoda const struct renesas_sdhi_of_data *of_data; 5671b7597cSYoshihiro Shimoda const struct renesas_sdhi_quirks *quirks; 5771b7597cSYoshihiro Shimoda }; 5871b7597cSYoshihiro Shimoda 59c330601cSWolfram Sang /* We want both end_flags to be set before we mark DMA as finished */ 60ffbace43SWolfram Sang #define SDHI_DMA_END_FLAG_DMA 0 61ffbace43SWolfram Sang #define SDHI_DMA_END_FLAG_ACCESS 1 62c330601cSWolfram Sang 637f3ea248SWolfram Sang struct renesas_sdhi_dma { 64c330601cSWolfram Sang unsigned long end_flags; 65058db286SMasahiro Yamada enum dma_slave_buswidth dma_buswidth; 66058db286SMasahiro Yamada bool (*filter)(struct dma_chan *chan, void *arg); 67058db286SMasahiro Yamada void (*enable)(struct tmio_mmc_host *host, bool enable); 6890d95106SMasahiro Yamada struct completion dma_dataend; 6990d95106SMasahiro Yamada struct tasklet_struct dma_complete; 70058db286SMasahiro Yamada }; 71058db286SMasahiro Yamada 72058db286SMasahiro Yamada struct renesas_sdhi { 73058db286SMasahiro Yamada struct clk *clk; 74bb6d3fa9SWolfram Sang struct clk *clkh; 75058db286SMasahiro Yamada struct clk *clk_cd; 76058db286SMasahiro Yamada struct tmio_mmc_data mmc_data; 777f3ea248SWolfram Sang struct renesas_sdhi_dma dma_priv; 787af08206SWolfram Sang const struct renesas_sdhi_quirks *quirks; 79058db286SMasahiro Yamada struct pinctrl *pinctrl; 80058db286SMasahiro Yamada struct pinctrl_state *pins_default, *pins_uhs; 81058db286SMasahiro Yamada void __iomem *scc_ctl; 82852d258fSMasahiro Yamada u32 scc_tappos; 83f0c8234cSTakeshi Saito u32 scc_tappos_hs400; 84ce6f92c2SWolfram Sang const u8 *adjust_hs400_calib_table; 85ce6f92c2SWolfram Sang bool needs_adjust_hs400; 86b2dd9a13SWolfram Sang 87b2dd9a13SWolfram Sang /* Tuning values: 1 for success, 0 for failure */ 88fcc958d6SGeert Uytterhoeven DECLARE_BITMAP(taps, BITS_PER_LONG); 895fb6bf51SWolfram Sang /* Sampling data comparison: 1 for match, 0 for mismatch */ 905fb6bf51SWolfram Sang DECLARE_BITMAP(smpcmp, BITS_PER_LONG); 91b2dd9a13SWolfram Sang unsigned int tap_num; 9274f6bdb8SWolfram Sang unsigned int tap_set; 93b4d86f37SWolfram Sang 94b4d86f37SWolfram Sang struct reset_control *rstc; 95058db286SMasahiro Yamada }; 96058db286SMasahiro Yamada 97058db286SMasahiro Yamada #define host_to_priv(host) \ 98058db286SMasahiro Yamada container_of((host)->pdata, struct renesas_sdhi, mmc_data) 99058db286SMasahiro Yamada 1009d08428aSSimon Horman int renesas_sdhi_probe(struct platform_device *pdev, 10171b7597cSYoshihiro Shimoda const struct tmio_mmc_dma_ops *dma_ops, 10271b7597cSYoshihiro Shimoda const struct renesas_sdhi_of_data *of_data, 10371b7597cSYoshihiro Shimoda const struct renesas_sdhi_quirks *quirks); 104*80c602b1SYangtao Li void renesas_sdhi_remove(struct platform_device *pdev); 105c2a96987SSimon Horman #endif 106