root/drivers/mmc/host/renesas_sdhi.h

INCLUDED FROM

   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