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 */ 18 u32 tap_hs400; /* sampling clock position for HS400 */ 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 tmio_mmc_dma { 37 enum dma_slave_buswidth dma_buswidth; 38 bool (*filter)(struct dma_chan *chan, void *arg); 39 void (*enable)(struct tmio_mmc_host *host, bool enable); 40 struct completion dma_dataend; 41 struct tasklet_struct dma_complete; 42 }; 43 44 struct renesas_sdhi { 45 struct clk *clk; 46 struct clk *clk_cd; 47 struct tmio_mmc_data mmc_data; 48 struct tmio_mmc_dma dma_priv; 49 struct pinctrl *pinctrl; 50 struct pinctrl_state *pins_default, *pins_uhs; 51 void __iomem *scc_ctl; 52 u32 scc_tappos; 53 u32 scc_tappos_hs400; 54 }; 55 56 #define host_to_priv(host) \ 57 container_of((host)->pdata, struct renesas_sdhi, mmc_data) 58 59 int renesas_sdhi_probe(struct platform_device *pdev, 60 const struct tmio_mmc_dma_ops *dma_ops); 61 int renesas_sdhi_remove(struct platform_device *pdev); 62 #endif 63