/include/linux/amba/mmci.h

 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#include <linux/mmc/card.h>
 9#include <linux/mmc/sdio_func.h>
10
11struct embedded_sdio_data {
12        struct sdio_cis cis;
13        struct sdio_cccr cccr;
14        struct sdio_embedded_func *funcs;
15        int num_funcs;
16};
17
18
19/*
20 * These defines is places here due to access is needed from machine
21 * configuration files. The ST Micro version does not have ROD and
22 * reuse the voltage registers for direction settings.
23 */
24#define MCI_ST_DATA2DIREN	(1 << 2)
25#define MCI_ST_CMDDIREN		(1 << 3)
26#define MCI_ST_DATA0DIREN	(1 << 4)
27#define MCI_ST_DATA31DIREN	(1 << 5)
28#define MCI_ST_FBCLKEN		(1 << 7)
29#define MCI_ST_DATA74DIREN	(1 << 8)
30
31/* Just some dummy forwarding */
32struct dma_chan;
33
34/**
35 * struct mmci_platform_data - platform configuration for the MMCI
36 * (also known as PL180) block.
37 * @f_max: the maximum operational frequency for this host in this
38 * platform configuration. When this is specified it takes precedence
39 * over the module parameter for the same frequency.
40 * @ocr_mask: available voltages on the 4 pins from the block, this
41 * is ignored if a regulator is used, see the MMC_VDD_* masks in
42 * mmc/host.h
43 * @ios_handler: a callback function to act on specfic ios changes,
44 * used for example to control a levelshifter
45 * mask into a value to be binary (or set some other custom bits
46 * in MMCIPWR) or:ed and written into the MMCIPWR register of the
47 * block.  May also control external power based on the power_mode.
48 * @status: if no GPIO read function was given to the block in
49 * gpio_wp (below) this function will be called to determine
50 * whether a card is present in the MMC slot or not
51 * @gpio_wp: read this GPIO pin to see if the card is write protected
52 * @gpio_cd: read this GPIO pin to detect card insertion
53 * @cd_invert: true if the gpio_cd pin value is active low
54 * @capabilities: the capabilities of the block as implemented in
55 * this platform, signify anything MMC_CAP_* from mmc/host.h
56 * @capabilities2: more capabilities, MMC_CAP2_* from mmc/host.h
57 * @sigdir: a bit field indicating for what bits in the MMC bus the host
58 * should enable signal direction indication.
59 * @dma_filter: function used to select an appropriate RX and TX
60 * DMA channel to be used for DMA, if and only if you're deploying the
61 * generic DMA engine
62 * @dma_rx_param: parameter passed to the DMA allocation
63 * filter in order to select an appropriate RX channel. If
64 * there is a bidirectional RX+TX channel, then just specify
65 * this and leave dma_tx_param set to NULL
66 * @dma_tx_param: parameter passed to the DMA allocation
67 * filter in order to select an appropriate TX channel. If this
68 * is NULL the driver will attempt to use the RX channel as a
69 * bidirectional channel
70 */
71struct mmci_platform_data {
72	unsigned int f_max;
73	unsigned int ocr_mask;
74	int (*ios_handler)(struct device *, struct mmc_ios *);
75	unsigned int (*status)(struct device *);
76	int	gpio_wp;
77	int	gpio_cd;
78	bool	cd_invert;
79	unsigned long capabilities;
80	unsigned long capabilities2;
81	u32 sigdir;
82	bool (*dma_filter)(struct dma_chan *chan, void *filter_param);
83	void *dma_rx_param;
84	void *dma_tx_param;
85	unsigned int status_irq;
86	struct embedded_sdio_data *embedded_sdio;
87	int (*register_status_notify)(void (*callback)(int card_present, void *dev_id), void *dev_id);
88};
89
90#endif