Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
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 */
10struct 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 */
45struct 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