treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / mmc / host / renesas_sdhi.h
blobf524251d5113aea15de2b5443ce656ca04ead393
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * Renesas Mobile SDHI
5 * Copyright (C) 2017 Horms Solutions Ltd., Simon Horman
6 * Copyright (C) 2017-19 Renesas Electronics Corporation
7 */
9 #ifndef RENESAS_SDHI_H
10 #define RENESAS_SDHI_H
12 #include <linux/platform_device.h>
13 #include "tmio_mmc.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;
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;
36 struct renesas_sdhi_quirks {
37 bool hs400_disabled;
38 bool hs400_4taps;
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;
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;
62 #define host_to_priv(host) \
63 container_of((host)->pdata, struct renesas_sdhi, mmc_data)
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