include/linux/amba/mmci.h

   1 /*
   2  *  include/linux/amba/mmci.h
   3  */
   4 #ifndef AMBA_MMCI_H
   5 #define AMBA_MMCI_H
   6
   7 #include <linux/mmc/host.h>
   8 #include <linux/mmc/card.h>
   9 #include <linux/mmc/sdio_func.h>
  10
  11 struct embedded_sdio_data {
  12         struct sdio_cis cis;
  13         struct sdio_cccr cccr;
  14         struct sdio_embedded_func *funcs;
  15         int num_funcs;
  16 };
  17
  18
  19 /*
  20  * These defines is places here due to access is needed from machine
  21  * configuration files. The ST Micro version does not have ROD and
  22  * reuse the voltage registers for direction settings.
  23  */
  24 #define MCI_ST_DATA2DIREN       (1 << 2)
  25 #define MCI_ST_CMDDIREN         (1 << 3)
  26 #define MCI_ST_DATA0DIREN       (1 << 4)
  27 #define MCI_ST_DATA31DIREN      (1 << 5)
  28 #define MCI_ST_FBCLKEN          (1 << 7)
  29 #define MCI_ST_DATA74DIREN      (1 << 8)
  30
  31 /* Just some dummy forwarding */
  32 struct dma_chan;
  33
  34 /**
  35  * struct mmci_platform_data - platform configuration for the MMCI
  36  * (also known as PL180) block.
  37  * @f_max: the maximum operational frequency for this host in this
  38  * platform configuration. When this is specified it takes precedence
  39  * over the module parameter for the same frequency.
  40  * @ocr_mask: available voltages on the 4 pins from the block, this
  41  * is ignored if a regulator is used, see the MMC_VDD_* masks in
  42  * mmc/host.h
  43  * @ios_handler: a callback function to act on specfic ios changes,
  44  * used for example to control a levelshifter
  45  * mask into a value to be binary (or set some other custom bits
  46  * in MMCIPWR) or:ed and written into the MMCIPWR register of the
  47  * block.  May also control external power based on the power_mode.
  48  * @status: if no GPIO read function was given to the block in
  49  * gpio_wp (below) this function will be called to determine
  50  * whether a card is present in the MMC slot or not
  51  * @gpio_wp: read this GPIO pin to see if the card is write protected
  52  * @gpio_cd: read this GPIO pin to detect card insertion
  53  * @cd_invert: true if the gpio_cd pin value is active low
  54  * @capabilities: the capabilities of the block as implemented in
  55  * this platform, signify anything MMC_CAP_* from mmc/host.h
  56  * @capabilities2: more capabilities, MMC_CAP2_* from mmc/host.h
  57  * @sigdir: a bit field indicating for what bits in the MMC bus the host
  58  * should enable signal direction indication.
  59  * @dma_filter: function used to select an appropriate RX and TX
  60  * DMA channel to be used for DMA, if and only if you're deploying the
  61  * generic DMA engine
  62  * @dma_rx_param: parameter passed to the DMA allocation
  63  * filter in order to select an appropriate RX channel. If
  64  * there is a bidirectional RX+TX channel, then just specify
  65  * this and leave dma_tx_param set to NULL
  66  * @dma_tx_param: parameter passed to the DMA allocation
  67  * filter in order to select an appropriate TX channel. If this
  68  * is NULL the driver will attempt to use the RX channel as a
  69  * bidirectional channel
  70  */
  71 struct mmci_platform_data {
  72         unsigned int f_max;
  73         unsigned int ocr_mask;
  74         int (*ios_handler)(struct device *, struct mmc_ios *);
  75         unsigned int (*status)(struct device *);
  76         int     gpio_wp;
  77         int     gpio_cd;
  78         bool    cd_invert;
  79         unsigned long capabilities;
  80         unsigned long capabilities2;
  81         u32 sigdir;
  82         bool (*dma_filter)(struct dma_chan *chan, void *filter_param);
  83         void *dma_rx_param;
  84         void *dma_tx_param;
  85         unsigned int status_irq;
  86         struct embedded_sdio_data *embedded_sdio;
  87         int (*register_status_notify)(void (*callback)(int card_present, void *dev_id), void *dev_id);
  88 };
  89
  90 #endif