1 /* SPDX-License-Identifier: GPL-2.0 */
5 * Copyright (C) 2017 Horms Solutions Ltd., Simon Horman
6 * Copyright (C) 2017-19 Renesas Electronics Corporation
10 #define RENESAS_SDHI_H
12 #include <linux/platform_device.h>
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) */
21 struct renesas_sdhi_of_data {
22 unsigned long tmio_flags;
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;
30 struct renesas_sdhi_scc *taps;
32 unsigned int max_blk_count;
33 unsigned short max_segs;
36 #define SDHI_CALIB_TABLE_MAX 32
38 struct renesas_sdhi_quirks {
42 const u8 (*hs400_calib_table)[SDHI_CALIB_TABLE_MAX];
46 enum dma_slave_buswidth dma_buswidth;
47 bool (*filter)(struct dma_chan *chan, void *arg);
48 void (*enable)(struct tmio_mmc_host *host, bool enable);
49 struct completion dma_dataend;
50 struct tasklet_struct dma_complete;
56 struct tmio_mmc_data mmc_data;
57 struct tmio_mmc_dma dma_priv;
58 const struct renesas_sdhi_quirks *quirks;
59 struct pinctrl *pinctrl;
60 struct pinctrl_state *pins_default, *pins_uhs;
61 void __iomem *scc_ctl;
64 const u8 *adjust_hs400_calib_table;
65 bool needs_adjust_hs400;
67 /* Tuning values: 1 for success, 0 for failure */
68 DECLARE_BITMAP(taps, BITS_PER_LONG);
69 /* Sampling data comparison: 1 for match, 0 for mismatch */
70 DECLARE_BITMAP(smpcmp, BITS_PER_LONG);
75 #define host_to_priv(host) \
76 container_of((host)->pdata, struct renesas_sdhi, mmc_data)
78 int renesas_sdhi_probe(struct platform_device *pdev,
79 const struct tmio_mmc_dma_ops *dma_ops);
80 int renesas_sdhi_remove(struct platform_device *pdev);