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 struct renesas_sdhi_quirks { 37 bool hs400_disabled; 38 bool hs400_4taps; 39 }; 40 41 struct tmio_mmc_dma { 42 enum dma_slave_buswidth dma_buswidth; 43 bool (*filter)(struct dma_chan *chan, void *arg); 44 void (*enable)(struct tmio_mmc_host *host, bool enable); 45 struct completion dma_dataend; 46 struct tasklet_struct dma_complete; 47 }; 48 49 struct renesas_sdhi { 50 struct clk *clk; 51 struct clk *clk_cd; 52 struct tmio_mmc_data mmc_data; 53 struct tmio_mmc_dma dma_priv; 54 const struct renesas_sdhi_quirks *quirks; 55 struct pinctrl *pinctrl; 56 struct pinctrl_state *pins_default, *pins_uhs; 57 void __iomem *scc_ctl; 58 u32 scc_tappos; 59 u32 scc_tappos_hs400; 60 }; 61 62 #define host_to_priv(host) \ 63 container_of((host)->pdata, struct renesas_sdhi, mmc_data) 64 65 int renesas_sdhi_probe(struct platform_device *pdev, 66 const struct tmio_mmc_dma_ops *dma_ops); 67 int renesas_sdhi_remove(struct platform_device *pdev); 68 #endif 69