drivers/mmc/host/renesas_sdhi.h

   1 /*
   2  * Renesas Mobile SDHI
   3  *
   4  * Copyright (C) 2017 Horms Solutions Ltd., Simon Horman
   5  * Copyright (C) 2017 Renesas Electronics Corporation
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11
  12 #ifndef RENESAS_SDHI_H
  13 #define RENESAS_SDHI_H
  14
  15 #include <linux/platform_device.h>
  16 #include "tmio_mmc.h"
  17
  18 struct renesas_sdhi_scc {
  19         unsigned long clk_rate; /* clock rate for SDR104 */
  20         u32 tap;                /* sampling clock position for SDR104 */
  21 };
  22
  23 struct renesas_sdhi_of_data {
  24         unsigned long tmio_flags;
  25         u32           tmio_ocr_mask;
  26         unsigned long capabilities;
  27         unsigned long capabilities2;
  28         enum dma_slave_buswidth dma_buswidth;
  29         dma_addr_t dma_rx_offset;
  30         unsigned int bus_shift;
  31         int scc_offset;
  32         struct renesas_sdhi_scc *taps;
  33         int taps_num;
  34         unsigned int max_blk_count;
  35         unsigned short max_segs;
  36 };
  37
  38 struct tmio_mmc_dma {
  39         enum dma_slave_buswidth dma_buswidth;
  40         bool (*filter)(struct dma_chan *chan, void *arg);
  41         void (*enable)(struct tmio_mmc_host *host, bool enable);
  42         struct completion       dma_dataend;
  43         struct tasklet_struct   dma_complete;
  44 };
  45
  46 struct renesas_sdhi {
  47         struct clk *clk;
  48         struct clk *clk_cd;
  49         struct tmio_mmc_data mmc_data;
  50         struct tmio_mmc_dma dma_priv;
  51         struct pinctrl *pinctrl;
  52         struct pinctrl_state *pins_default, *pins_uhs;
  53         void __iomem *scc_ctl;
  54         u32 scc_tappos;
  55 };
  56
  57 #define host_to_priv(host) \
  58         container_of((host)->pdata, struct renesas_sdhi, mmc_data)
  59
  60 int renesas_sdhi_probe(struct platform_device *pdev,
  61                        const struct tmio_mmc_dma_ops *dma_ops);
  62 int renesas_sdhi_remove(struct platform_device *pdev);
  63 #endif