diff options
Diffstat (limited to 'include/linux/amba/mmci.h')
| -rw-r--r-- | include/linux/amba/mmci.h | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/include/linux/amba/mmci.h b/include/linux/amba/mmci.h new file mode 100644 index 00000000..9d1d9caf --- /dev/null +++ b/include/linux/amba/mmci.h @@ -0,0 +1,90 @@ +/* + * include/linux/amba/mmci.h + */ +#ifndef AMBA_MMCI_H +#define AMBA_MMCI_H + +#include <linux/mmc/host.h> +#include <linux/mmc/card.h> +#include <linux/mmc/sdio_func.h> + +struct embedded_sdio_data { + struct sdio_cis cis; + struct sdio_cccr cccr; + struct sdio_embedded_func *funcs; + int num_funcs; +}; + + +/* + * These defines is places here due to access is needed from machine + * configuration files. The ST Micro version does not have ROD and + * reuse the voltage registers for direction settings. + */ +#define MCI_ST_DATA2DIREN (1 << 2) +#define MCI_ST_CMDDIREN (1 << 3) +#define MCI_ST_DATA0DIREN (1 << 4) +#define MCI_ST_DATA31DIREN (1 << 5) +#define MCI_ST_FBCLKEN (1 << 7) +#define MCI_ST_DATA74DIREN (1 << 8) + +/* Just some dummy forwarding */ +struct dma_chan; + +/** + * struct mmci_platform_data - platform configuration for the MMCI + * (also known as PL180) block. + * @f_max: the maximum operational frequency for this host in this + * platform configuration. When this is specified it takes precedence + * over the module parameter for the same frequency. + * @ocr_mask: available voltages on the 4 pins from the block, this + * is ignored if a regulator is used, see the MMC_VDD_* masks in + * mmc/host.h + * @ios_handler: a callback function to act on specfic ios changes, + * used for example to control a levelshifter + * mask into a value to be binary (or set some other custom bits + * in MMCIPWR) or:ed and written into the MMCIPWR register of the + * block. May also control external power based on the power_mode. + * @status: if no GPIO read function was given to the block in + * gpio_wp (below) this function will be called to determine + * whether a card is present in the MMC slot or not + * @gpio_wp: read this GPIO pin to see if the card is write protected + * @gpio_cd: read this GPIO pin to detect card insertion + * @cd_invert: true if the gpio_cd pin value is active low + * @capabilities: the capabilities of the block as implemented in + * this platform, signify anything MMC_CAP_* from mmc/host.h + * @capabilities2: more capabilities, MMC_CAP2_* from mmc/host.h + * @sigdir: a bit field indicating for what bits in the MMC bus the host + * should enable signal direction indication. + * @dma_filter: function used to select an appropriate RX and TX + * DMA channel to be used for DMA, if and only if you're deploying the + * generic DMA engine + * @dma_rx_param: parameter passed to the DMA allocation + * filter in order to select an appropriate RX channel. If + * there is a bidirectional RX+TX channel, then just specify + * this and leave dma_tx_param set to NULL + * @dma_tx_param: parameter passed to the DMA allocation + * filter in order to select an appropriate TX channel. If this + * is NULL the driver will attempt to use the RX channel as a + * bidirectional channel + */ +struct mmci_platform_data { + unsigned int f_max; + unsigned int ocr_mask; + int (*ios_handler)(struct device *, struct mmc_ios *); + unsigned int (*status)(struct device *); + int gpio_wp; + int gpio_cd; + bool cd_invert; + unsigned long capabilities; + unsigned long capabilities2; + u32 sigdir; + bool (*dma_filter)(struct dma_chan *chan, void *filter_param); + void *dma_rx_param; + void *dma_tx_param; + unsigned int status_irq; + struct embedded_sdio_data *embedded_sdio; + int (*register_status_notify)(void (*callback)(int card_present, void *dev_id), void *dev_id); +}; + +#endif |