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