drivers/mmc/host/renesas_sdhi.h

   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 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 };
  19
  20 struct renesas_sdhi_of_data {
  21         unsigned long tmio_flags;
  22         u32           tmio_ocr_mask;
  23         unsigned long capabilities;
  24         unsigned long capabilities2;
  25         enum dma_slave_buswidth dma_buswidth;
  26         dma_addr_t dma_rx_offset;
  27         unsigned int bus_shift;
  28         int scc_offset;
  29         struct renesas_sdhi_scc *taps;
  30         int taps_num;
  31         unsigned int max_blk_count;
  32         unsigned short max_segs;
  33 };
  34
  35 struct tmio_mmc_dma {
  36         enum dma_slave_buswidth dma_buswidth;
  37         bool (*filter)(struct dma_chan *chan, void *arg);
  38         void (*enable)(struct tmio_mmc_host *host, bool enable);
  39         struct completion       dma_dataend;
  40         struct tasklet_struct   dma_complete;
  41 };
  42
  43 struct renesas_sdhi {
  44         struct clk *clk;
  45         struct clk *clk_cd;
  46         struct tmio_mmc_data mmc_data;
  47         struct tmio_mmc_dma dma_priv;
  48         struct pinctrl *pinctrl;
  49         struct pinctrl_state *pins_default, *pins_uhs;
  50         void __iomem *scc_ctl;
  51         u32 scc_tappos;
  52 };
  53
  54 #define host_to_priv(host) \
  55         container_of((host)->pdata, struct renesas_sdhi, mmc_data)
  56
  57 int renesas_sdhi_probe(struct platform_device *pdev,
  58                        const struct tmio_mmc_dma_ops *dma_ops);
  59 int renesas_sdhi_remove(struct platform_device *pdev);
  60 #endif