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 /* Just some dummy forwarding */ 10 struct dma_chan; 11 12 /** 13 * struct mmci_platform_data - platform configuration for the MMCI 14 * (also known as PL180) block. 15 * @f_max: the maximum operational frequency for this host in this 16 * platform configuration. When this is specified it takes precedence 17 * over the module parameter for the same frequency. 18 * @ocr_mask: available voltages on the 4 pins from the block, this 19 * is ignored if a regulator is used, see the MMC_VDD_* masks in 20 * mmc/host.h 21 * @vdd_handler: a callback function to translate a MMC_VDD_* 22 * mask into a value to be binary (or set some other custom bits 23 * in MMCIPWR) or:ed and written into the MMCIPWR register of the 24 * block. May also control external power based on the power_mode. 25 * @status: if no GPIO read function was given to the block in 26 * gpio_wp (below) this function will be called to determine 27 * whether a card is present in the MMC slot or not 28 * @gpio_wp: read this GPIO pin to see if the card is write protected 29 * @gpio_cd: read this GPIO pin to detect card insertion 30 * @cd_invert: true if the gpio_cd pin value is active low 31 * @capabilities: the capabilities of the block as implemented in 32 * this platform, signify anything MMC_CAP_* from mmc/host.h 33 * @dma_filter: function used to select an appropriate RX and TX 34 * DMA channel to be used for DMA, if and only if you're deploying the 35 * generic DMA engine 36 * @dma_rx_param: parameter passed to the DMA allocation 37 * filter in order to select an appropriate RX channel. If 38 * there is a bidirectional RX+TX channel, then just specify 39 * this and leave dma_tx_param set to NULL 40 * @dma_tx_param: parameter passed to the DMA allocation 41 * filter in order to select an appropriate TX channel. If this 42 * is NULL the driver will attempt to use the RX channel as a 43 * bidirectional channel 44 */ 45 struct mmci_platform_data { 46 unsigned int f_max; 47 unsigned int ocr_mask; 48 u32 (*vdd_handler)(struct device *, unsigned int vdd, 49 unsigned char power_mode); 50 unsigned int (*status)(struct device *); 51 int gpio_wp; 52 int gpio_cd; 53 bool cd_invert; 54 unsigned long capabilities; 55 bool (*dma_filter)(struct dma_chan *chan, void *filter_param); 56 void *dma_rx_param; 57 void *dma_tx_param; 58 }; 59 60 #endif 61