1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __PLATFORM_DATA_SDHCI_S3C_H
3 #define __PLATFORM_DATA_SDHCI_S3C_H
4
5 struct platform_device;
6
7 enum cd_types {
8 S3C_SDHCI_CD_INTERNAL, /* use mmc internal CD line */
9 S3C_SDHCI_CD_EXTERNAL, /* use external callback */
10 S3C_SDHCI_CD_GPIO, /* use external gpio pin for CD line */
11 S3C_SDHCI_CD_NONE, /* no CD line, use polling to detect card */
12 S3C_SDHCI_CD_PERMANENT, /* no CD line, card permanently wired to host */
13 };
14
15 /**
16 * struct s3c_sdhci_platdata() - Platform device data for Samsung SDHCI
17 * @max_width: The maximum number of data bits supported.
18 * @host_caps: Standard MMC host capabilities bit field.
19 * @host_caps2: The second standard MMC host capabilities bit field.
20 * @cd_type: Type of Card Detection method (see cd_types enum above)
21 * @ext_cd_init: Initialize external card detect subsystem. Called on
22 * sdhci-s3c driver probe when cd_type == S3C_SDHCI_CD_EXTERNAL.
23 * notify_func argument is a callback to the sdhci-s3c driver
24 * that triggers the card detection event. Callback arguments:
25 * dev is pointer to platform device of the host controller,
26 * state is new state of the card (0 - removed, 1 - inserted).
27 * @ext_cd_cleanup: Cleanup external card detect subsystem. Called on
28 * sdhci-s3c driver remove when cd_type == S3C_SDHCI_CD_EXTERNAL.
29 * notify_func argument is the same callback as for ext_cd_init.
30 * @ext_cd_gpio: gpio pin used for external CD line, valid only if
31 * cd_type == S3C_SDHCI_CD_GPIO
32 * @ext_cd_gpio_invert: invert values for external CD gpio line
33 * @cfg_gpio: Configure the GPIO for a specific card bit-width
34 *
35 * Initialisation data specific to either the machine or the platform
36 * for the device driver to use or call-back when configuring gpio or
37 * card speed information.
38 */
39 struct s3c_sdhci_platdata {
40 unsigned int max_width;
41 unsigned int host_caps;
42 unsigned int host_caps2;
43 unsigned int pm_caps;
44 enum cd_types cd_type;
45
46 int ext_cd_gpio;
47 bool ext_cd_gpio_invert;
48 int (*ext_cd_init)(void (*notify_func)(struct platform_device *,
49 int state));
50 int (*ext_cd_cleanup)(void (*notify_func)(struct platform_device *,
51 int state));
52
53 void (*cfg_gpio)(struct platform_device *dev, int width);
54 };
55
56
57 #endif /* __PLATFORM_DATA_SDHCI_S3C_H */