tmio.h

 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/* Some controllers have a 64-bit wide data port register */
51#define TMIO_MMC_64BIT_DATA_PORT	BIT(12)
52
53struct tmio_mmc_data {
54	void				*chan_priv_tx;
55	void				*chan_priv_rx;
56	unsigned int			hclk;
57	unsigned long			capabilities;
58	unsigned long			capabilities2;
59	unsigned long			flags;
60	u32				ocr_mask;	/* available voltages */
61	dma_addr_t			dma_rx_offset;
62	unsigned int			max_blk_count;
63	unsigned short			max_segs;
64};
65#endif