Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/include/linux/mmc/host.h |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License version 2 as |
| 6 | * published by the Free Software Foundation. |
| 7 | * |
| 8 | * Host driver specific definitions. |
| 9 | */ |
| 10 | #ifndef LINUX_MMC_HOST_H |
| 11 | #define LINUX_MMC_HOST_H |
| 12 | |
| 13 | #include <linux/mmc/mmc.h> |
| 14 | |
| 15 | struct mmc_ios { |
| 16 | unsigned int clock; /* clock rate */ |
| 17 | unsigned short vdd; |
| 18 | |
| 19 | #define MMC_VDD_150 0 |
| 20 | #define MMC_VDD_155 1 |
| 21 | #define MMC_VDD_160 2 |
| 22 | #define MMC_VDD_165 3 |
| 23 | #define MMC_VDD_170 4 |
| 24 | #define MMC_VDD_180 5 |
| 25 | #define MMC_VDD_190 6 |
| 26 | #define MMC_VDD_200 7 |
| 27 | #define MMC_VDD_210 8 |
| 28 | #define MMC_VDD_220 9 |
| 29 | #define MMC_VDD_230 10 |
| 30 | #define MMC_VDD_240 11 |
| 31 | #define MMC_VDD_250 12 |
| 32 | #define MMC_VDD_260 13 |
| 33 | #define MMC_VDD_270 14 |
| 34 | #define MMC_VDD_280 15 |
| 35 | #define MMC_VDD_290 16 |
| 36 | #define MMC_VDD_300 17 |
| 37 | #define MMC_VDD_310 18 |
| 38 | #define MMC_VDD_320 19 |
| 39 | #define MMC_VDD_330 20 |
| 40 | #define MMC_VDD_340 21 |
| 41 | #define MMC_VDD_350 22 |
| 42 | #define MMC_VDD_360 23 |
| 43 | |
| 44 | unsigned char bus_mode; /* command output mode */ |
| 45 | |
| 46 | #define MMC_BUSMODE_OPENDRAIN 1 |
| 47 | #define MMC_BUSMODE_PUSHPULL 2 |
| 48 | |
Pierre Ossman | 865e9f1 | 2005-09-03 16:45:02 +0100 | [diff] [blame] | 49 | unsigned char chip_select; /* SPI chip select */ |
| 50 | |
| 51 | #define MMC_CS_DONTCARE 0 |
| 52 | #define MMC_CS_HIGH 1 |
| 53 | #define MMC_CS_LOW 2 |
| 54 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | unsigned char power_mode; /* power supply mode */ |
| 56 | |
| 57 | #define MMC_POWER_OFF 0 |
| 58 | #define MMC_POWER_UP 1 |
| 59 | #define MMC_POWER_ON 2 |
Pierre Ossman | f218278 | 2005-09-06 15:18:55 -0700 | [diff] [blame] | 60 | |
| 61 | unsigned char bus_width; /* data bus width */ |
| 62 | |
| 63 | #define MMC_BUS_WIDTH_1 0 |
| 64 | #define MMC_BUS_WIDTH_4 2 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | }; |
| 66 | |
| 67 | struct mmc_host_ops { |
| 68 | void (*request)(struct mmc_host *host, struct mmc_request *req); |
| 69 | void (*set_ios)(struct mmc_host *host, struct mmc_ios *ios); |
Pierre Ossman | a00fc09 | 2005-09-06 15:18:52 -0700 | [diff] [blame] | 70 | int (*get_ro)(struct mmc_host *host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | }; |
| 72 | |
| 73 | struct mmc_card; |
| 74 | struct device; |
| 75 | |
| 76 | struct mmc_host { |
Greg Kroah-Hartman | fcaf71f | 2006-09-12 17:00:10 +0200 | [diff] [blame] | 77 | struct device *parent; |
| 78 | struct device class_dev; |
Russell King | dce7737 | 2005-08-19 09:42:52 +0100 | [diff] [blame] | 79 | int index; |
David Brownell | f57b225 | 2006-09-03 06:43:33 -0700 | [diff] [blame] | 80 | const struct mmc_host_ops *ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | unsigned int f_min; |
| 82 | unsigned int f_max; |
| 83 | u32 ocr_avail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | |
Pierre Ossman | f218278 | 2005-09-06 15:18:55 -0700 | [diff] [blame] | 85 | unsigned long caps; /* Host capabilities */ |
| 86 | |
| 87 | #define MMC_CAP_4_BIT_DATA (1 << 0) /* Can the host do 4 bit transfers */ |
Russell King | db53f28 | 2006-08-30 15:14:56 +0100 | [diff] [blame] | 88 | #define MMC_CAP_MULTIWRITE (1 << 1) /* Can accurately report bytes sent to card on error */ |
Russell King | 42431ac | 2006-09-24 10:44:09 +0100 | [diff] [blame] | 89 | #define MMC_CAP_BYTEBLOCK (1 << 2) /* Can do non-log2 block sizes */ |
Pierre Ossman | f218278 | 2005-09-06 15:18:55 -0700 | [diff] [blame] | 90 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | /* host specific block data */ |
| 92 | unsigned int max_seg_size; /* see blk_queue_max_segment_size */ |
| 93 | unsigned short max_hw_segs; /* see blk_queue_max_hw_segments */ |
| 94 | unsigned short max_phys_segs; /* see blk_queue_max_phys_segments */ |
| 95 | unsigned short max_sectors; /* see blk_queue_max_sectors */ |
| 96 | unsigned short unused; |
| 97 | |
| 98 | /* private data */ |
| 99 | struct mmc_ios ios; /* current io bus settings */ |
| 100 | u32 ocr; /* the current OCR setting */ |
| 101 | |
Pierre Ossman | 335eadf | 2005-09-06 15:18:50 -0700 | [diff] [blame] | 102 | unsigned int mode; /* current card mode of host */ |
| 103 | #define MMC_MODE_MMC 0 |
| 104 | #define MMC_MODE_SD 1 |
| 105 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | struct list_head cards; /* devices attached to this host */ |
| 107 | |
| 108 | wait_queue_head_t wq; |
| 109 | spinlock_t lock; /* card_busy lock */ |
| 110 | struct mmc_card *card_busy; /* the MMC card claiming host */ |
| 111 | struct mmc_card *card_selected; /* the selected MMC card */ |
| 112 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 113 | struct delayed_work detect; |
Russell King | 01357dc | 2005-09-08 22:46:00 +0100 | [diff] [blame] | 114 | |
| 115 | unsigned long private[0] ____cacheline_aligned; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | }; |
| 117 | |
| 118 | extern struct mmc_host *mmc_alloc_host(int extra, struct device *); |
| 119 | extern int mmc_add_host(struct mmc_host *); |
| 120 | extern void mmc_remove_host(struct mmc_host *); |
| 121 | extern void mmc_free_host(struct mmc_host *); |
| 122 | |
Russell King | 01357dc | 2005-09-08 22:46:00 +0100 | [diff] [blame] | 123 | static inline void *mmc_priv(struct mmc_host *host) |
| 124 | { |
| 125 | return (void *)host->private; |
| 126 | } |
| 127 | |
Greg Kroah-Hartman | fcaf71f | 2006-09-12 17:00:10 +0200 | [diff] [blame] | 128 | #define mmc_dev(x) ((x)->parent) |
| 129 | #define mmc_hostname(x) ((x)->class_dev.bus_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | |
Pavel Machek | 3bfffd9 | 2005-04-16 15:25:37 -0700 | [diff] [blame] | 131 | extern int mmc_suspend_host(struct mmc_host *, pm_message_t); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | extern int mmc_resume_host(struct mmc_host *); |
| 133 | |
Richard Purdie | 8dc0033 | 2005-09-08 17:53:01 +0100 | [diff] [blame] | 134 | extern void mmc_detect_change(struct mmc_host *, unsigned long delay); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | extern void mmc_request_done(struct mmc_host *, struct mmc_request *); |
| 136 | |
| 137 | #endif |
| 138 | |