1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef MFD_TMIO_H 3 #define MFD_TMIO_H 4 5 #include <linux/platform_device.h> 6 #include <linux/types.h> 7 8 /* TMIO MMC platform flags */ 9 10 /* 11 * Some controllers can support a 2-byte block size when the bus width is 12 * configured in 4-bit mode. 13 */ 14 #define TMIO_MMC_BLKSZ_2BYTES BIT(1) 15 16 /* Some controllers can support SDIO IRQ signalling */ 17 #define TMIO_MMC_SDIO_IRQ BIT(2) 18 19 /* Some features are only available or tested on R-Car Gen2 or later */ 20 #define TMIO_MMC_MIN_RCAR2 BIT(3) 21 22 /* 23 * Some controllers require waiting for the SD bus to become idle before 24 * writing to some registers. 25 */ 26 #define TMIO_MMC_HAS_IDLE_WAIT BIT(4) 27 28 /* 29 * Use the busy timeout feature. Probably all TMIO versions support it. Yet, 30 * we don't have documentation for old variants, so we enable only known good 31 * variants with this flag. Can be removed once all variants are known good. 32 */ 33 #define TMIO_MMC_USE_BUSY_TIMEOUT BIT(5) 34 35 /* Some controllers have CMD12 automatically issue/non-issue register */ 36 #define TMIO_MMC_HAVE_CMD12_CTRL BIT(7) 37 38 /* Controller has some SDIO status bits which must be 1 */ 39 #define TMIO_MMC_SDIO_STATUS_SETBITS BIT(8) 40 41 /* Some controllers have a 32-bit wide data port register */ 42 #define TMIO_MMC_32BIT_DATA_PORT BIT(9) 43 44 /* Some controllers allows to set SDx actual clock */ 45 #define TMIO_MMC_CLK_ACTUAL BIT(10) 46 47 /* Some controllers have a CBSY bit */ 48 #define TMIO_MMC_HAVE_CBSY BIT(11) 49 50 struct tmio_mmc_data { 51 void *chan_priv_tx; 52 void *chan_priv_rx; 53 unsigned int hclk; 54 unsigned long capabilities; 55 unsigned long capabilities2; 56 unsigned long flags; 57 u32 ocr_mask; /* available voltages */ 58 dma_addr_t dma_rx_offset; 59 unsigned int max_blk_count; 60 unsigned short max_segs; 61 }; 62 #endif 63