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 | |
Pierre Ossman | af8350c | 2007-09-24 07:15:48 +0200 | [diff] [blame] | 13 | #include <linux/leds.h> |
Alexey Dobriyan | d43c36d | 2009-10-07 17:09:06 +0400 | [diff] [blame] | 14 | #include <linux/sched.h> |
Per Forlin | 1b676f7 | 2011-08-19 14:52:37 +0200 | [diff] [blame] | 15 | #include <linux/fault-inject.h> |
Pierre Ossman | af8350c | 2007-09-24 07:15:48 +0200 | [diff] [blame] | 16 | |
Pierre Ossman | aaac1b4 | 2007-02-28 15:33:10 +0100 | [diff] [blame] | 17 | #include <linux/mmc/core.h> |
Nicolas Pitre | da68c4e | 2010-03-05 13:43:31 -0800 | [diff] [blame] | 18 | #include <linux/mmc/pm.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | |
| 20 | struct mmc_ios { |
| 21 | unsigned int clock; /* clock rate */ |
| 22 | unsigned short vdd; |
| 23 | |
Philip Langdale | 4be34c9 | 2007-03-11 17:15:15 -0700 | [diff] [blame] | 24 | /* vdd stores the bit number of the selected voltage range from below. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | |
| 26 | unsigned char bus_mode; /* command output mode */ |
| 27 | |
| 28 | #define MMC_BUSMODE_OPENDRAIN 1 |
| 29 | #define MMC_BUSMODE_PUSHPULL 2 |
| 30 | |
Pierre Ossman | 865e9f1 | 2005-09-03 16:45:02 +0100 | [diff] [blame] | 31 | unsigned char chip_select; /* SPI chip select */ |
| 32 | |
| 33 | #define MMC_CS_DONTCARE 0 |
| 34 | #define MMC_CS_HIGH 1 |
| 35 | #define MMC_CS_LOW 2 |
| 36 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | unsigned char power_mode; /* power supply mode */ |
| 38 | |
| 39 | #define MMC_POWER_OFF 0 |
| 40 | #define MMC_POWER_UP 1 |
| 41 | #define MMC_POWER_ON 2 |
Pierre Ossman | f218278 | 2005-09-06 15:18:55 -0700 | [diff] [blame] | 42 | |
| 43 | unsigned char bus_width; /* data bus width */ |
| 44 | |
| 45 | #define MMC_BUS_WIDTH_1 0 |
| 46 | #define MMC_BUS_WIDTH_4 2 |
Jarkko Lavinen | b30f8af | 2008-11-17 14:35:21 +0200 | [diff] [blame] | 47 | #define MMC_BUS_WIDTH_8 3 |
Pierre Ossman | cd9277c | 2007-02-18 12:07:47 +0100 | [diff] [blame] | 48 | |
| 49 | unsigned char timing; /* timing specification used */ |
| 50 | |
| 51 | #define MMC_TIMING_LEGACY 0 |
| 52 | #define MMC_TIMING_MMC_HS 1 |
| 53 | #define MMC_TIMING_SD_HS 2 |
Arindam Nath | 49c468f | 2011-05-05 12:19:01 +0530 | [diff] [blame] | 54 | #define MMC_TIMING_UHS_SDR12 MMC_TIMING_LEGACY |
| 55 | #define MMC_TIMING_UHS_SDR25 MMC_TIMING_SD_HS |
| 56 | #define MMC_TIMING_UHS_SDR50 3 |
| 57 | #define MMC_TIMING_UHS_SDR104 4 |
| 58 | #define MMC_TIMING_UHS_DDR50 5 |
Adrian Hunter | 0f8d8ea | 2010-08-24 13:20:26 +0300 | [diff] [blame] | 59 | |
Adrian Hunter | 0f8d8ea | 2010-08-24 13:20:26 +0300 | [diff] [blame] | 60 | #define MMC_SDR_MODE 0 |
Adrian Hunter | 49e3b5a | 2010-10-11 12:43:50 +0300 | [diff] [blame] | 61 | #define MMC_1_2V_DDR_MODE 1 |
| 62 | #define MMC_1_8V_DDR_MODE 2 |
Arindam Nath | f2119df | 2011-05-05 12:18:57 +0530 | [diff] [blame] | 63 | |
| 64 | unsigned char signal_voltage; /* signalling voltage (1.8V or 3.3V) */ |
| 65 | |
| 66 | #define MMC_SIGNAL_VOLTAGE_330 0 |
| 67 | #define MMC_SIGNAL_VOLTAGE_180 1 |
Philip Rakity | 4c4cb17 | 2011-05-13 11:17:18 +0530 | [diff] [blame] | 68 | #define MMC_SIGNAL_VOLTAGE_120 2 |
Arindam Nath | d6d50a1 | 2011-05-05 12:18:59 +0530 | [diff] [blame] | 69 | |
| 70 | unsigned char drv_type; /* driver type (A, B, C, D) */ |
| 71 | |
| 72 | #define MMC_SET_DRIVER_TYPE_B 0 |
| 73 | #define MMC_SET_DRIVER_TYPE_A 1 |
| 74 | #define MMC_SET_DRIVER_TYPE_C 2 |
| 75 | #define MMC_SET_DRIVER_TYPE_D 3 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | }; |
| 77 | |
| 78 | struct mmc_host_ops { |
Adrian Hunter | 8ea926b | 2009-09-22 16:44:29 -0700 | [diff] [blame] | 79 | /* |
| 80 | * Hosts that support power saving can use the 'enable' and 'disable' |
| 81 | * methods to exit and enter power saving states. 'enable' is called |
| 82 | * when the host is claimed and 'disable' is called (or scheduled with |
| 83 | * a delay) when the host is released. The 'disable' is scheduled if |
| 84 | * the disable delay set by 'mmc_set_disable_delay()' is non-zero, |
| 85 | * otherwise 'disable' is called immediately. 'disable' may be |
| 86 | * scheduled repeatedly, to permit ever greater power saving at the |
| 87 | * expense of ever greater latency to re-enable. Rescheduling is |
| 88 | * determined by the return value of the 'disable' method. A positive |
| 89 | * value gives the delay in milliseconds. |
| 90 | * |
| 91 | * In the case where a host function (like set_ios) may be called |
| 92 | * with or without the host claimed, enabling and disabling can be |
| 93 | * done directly and will nest correctly. Call 'mmc_host_enable()' and |
| 94 | * 'mmc_host_lazy_disable()' for this purpose, but note that these |
| 95 | * functions must be paired. |
| 96 | * |
| 97 | * Alternatively, 'mmc_host_enable()' may be paired with |
| 98 | * 'mmc_host_disable()' which calls 'disable' immediately. In this |
| 99 | * case the 'disable' method will be called with 'lazy' set to 0. |
| 100 | * This is mainly useful for error paths. |
| 101 | * |
| 102 | * Because lazy disable may be called from a work queue, the 'disable' |
| 103 | * method must claim the host when 'lazy' != 0, which will work |
| 104 | * correctly because recursion is detected and handled. |
| 105 | */ |
| 106 | int (*enable)(struct mmc_host *host); |
| 107 | int (*disable)(struct mmc_host *host, int lazy); |
Per Forlin | aa8b683 | 2011-07-01 18:55:22 +0200 | [diff] [blame] | 108 | /* |
| 109 | * It is optional for the host to implement pre_req and post_req in |
| 110 | * order to support double buffering of requests (prepare one |
| 111 | * request while another request is active). |
Per Forlin | 7c8a282 | 2011-08-29 15:35:58 +0200 | [diff] [blame] | 112 | * pre_req() must always be followed by a post_req(). |
| 113 | * To undo a call made to pre_req(), call post_req() with |
| 114 | * a nonzero err condition. |
Per Forlin | aa8b683 | 2011-07-01 18:55:22 +0200 | [diff] [blame] | 115 | */ |
| 116 | void (*post_req)(struct mmc_host *host, struct mmc_request *req, |
| 117 | int err); |
| 118 | void (*pre_req)(struct mmc_host *host, struct mmc_request *req, |
| 119 | bool is_first_req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | void (*request)(struct mmc_host *host, struct mmc_request *req); |
Anton Vorontsov | 28f5248 | 2008-06-17 18:17:15 +0400 | [diff] [blame] | 121 | /* |
| 122 | * Avoid calling these three functions too often or in a "fast path", |
| 123 | * since underlaying controller might implement them in an expensive |
| 124 | * and/or slow way. |
| 125 | * |
| 126 | * Also note that these functions might sleep, so don't call them |
| 127 | * in the atomic contexts! |
Anton Vorontsov | 08f80bb | 2008-06-17 18:17:39 +0400 | [diff] [blame] | 128 | * |
| 129 | * Return values for the get_ro callback should be: |
| 130 | * 0 for a read/write card |
| 131 | * 1 for a read-only card |
| 132 | * -ENOSYS when not supported (equal to NULL callback) |
| 133 | * or a negative errno value when something bad happened |
| 134 | * |
Thomas Petazzoni | ee63a7d | 2008-09-02 10:14:13 +0200 | [diff] [blame] | 135 | * Return values for the get_cd callback should be: |
Anton Vorontsov | 08f80bb | 2008-06-17 18:17:39 +0400 | [diff] [blame] | 136 | * 0 for a absent card |
| 137 | * 1 for a present card |
| 138 | * -ENOSYS when not supported (equal to NULL callback) |
| 139 | * or a negative errno value when something bad happened |
Anton Vorontsov | 28f5248 | 2008-06-17 18:17:15 +0400 | [diff] [blame] | 140 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | void (*set_ios)(struct mmc_host *host, struct mmc_ios *ios); |
Pierre Ossman | a00fc09 | 2005-09-06 15:18:52 -0700 | [diff] [blame] | 142 | int (*get_ro)(struct mmc_host *host); |
Anton Vorontsov | 28f5248 | 2008-06-17 18:17:15 +0400 | [diff] [blame] | 143 | int (*get_cd)(struct mmc_host *host); |
| 144 | |
Nicolas Pitre | 17b759a | 2007-07-24 02:09:39 -0400 | [diff] [blame] | 145 | void (*enable_sdio_irq)(struct mmc_host *host, int enable); |
Daniel Mack | 3fcb027 | 2010-04-01 10:03:25 +0200 | [diff] [blame] | 146 | |
| 147 | /* optional callback for HC quirks */ |
| 148 | void (*init_card)(struct mmc_host *host, struct mmc_card *card); |
Arindam Nath | f2119df | 2011-05-05 12:18:57 +0530 | [diff] [blame] | 149 | |
| 150 | int (*start_signal_voltage_switch)(struct mmc_host *host, struct mmc_ios *ios); |
Arindam Nath | b513ea2 | 2011-05-05 12:19:04 +0530 | [diff] [blame] | 151 | int (*execute_tuning)(struct mmc_host *host); |
Arindam Nath | 4d55c5a | 2011-05-05 12:19:05 +0530 | [diff] [blame] | 152 | void (*enable_preset_value)(struct mmc_host *host, bool enable); |
Philip Rakity | ca8e99b | 2011-07-06 08:51:32 -0700 | [diff] [blame] | 153 | int (*select_drive_strength)(unsigned int max_dtr, int host_drv, int card_drv); |
Adrian Hunter | b249951 | 2011-08-29 16:42:11 +0300 | [diff] [blame] | 154 | void (*hw_reset)(struct mmc_host *host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | }; |
| 156 | |
| 157 | struct mmc_card; |
| 158 | struct device; |
| 159 | |
Per Forlin | aa8b683 | 2011-07-01 18:55:22 +0200 | [diff] [blame] | 160 | struct mmc_async_req { |
| 161 | /* active mmc request */ |
| 162 | struct mmc_request *mrq; |
| 163 | /* |
| 164 | * Check error status of completed mmc request. |
| 165 | * Returns 0 if success otherwise non zero. |
| 166 | */ |
| 167 | int (*err_check) (struct mmc_card *, struct mmc_async_req *); |
| 168 | }; |
| 169 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | struct mmc_host { |
Greg Kroah-Hartman | fcaf71f | 2006-09-12 17:00:10 +0200 | [diff] [blame] | 171 | struct device *parent; |
| 172 | struct device class_dev; |
Russell King | dce7737 | 2005-08-19 09:42:52 +0100 | [diff] [blame] | 173 | int index; |
David Brownell | f57b225 | 2006-09-03 06:43:33 -0700 | [diff] [blame] | 174 | const struct mmc_host_ops *ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | unsigned int f_min; |
| 176 | unsigned int f_max; |
Hein Tibosch | 88ae8b8 | 2010-09-06 09:37:19 +0800 | [diff] [blame] | 177 | unsigned int f_init; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | u32 ocr_avail; |
Takashi Iwai | 8f230f4 | 2010-12-08 10:04:30 +0100 | [diff] [blame] | 179 | u32 ocr_avail_sdio; /* SDIO-specific OCR */ |
| 180 | u32 ocr_avail_sd; /* SD-specific OCR */ |
| 181 | u32 ocr_avail_mmc; /* MMC-specific OCR */ |
Maxim Levitsky | 4c2ef25 | 2010-08-10 18:01:41 -0700 | [diff] [blame] | 182 | struct notifier_block pm_notify; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | |
Philip Langdale | 55556da | 2007-03-16 19:39:00 -0700 | [diff] [blame] | 184 | #define MMC_VDD_165_195 0x00000080 /* VDD voltage 1.65 - 1.95 */ |
Pierre Ossman | f74d132 | 2007-02-09 22:49:31 +0100 | [diff] [blame] | 185 | #define MMC_VDD_20_21 0x00000100 /* VDD voltage 2.0 ~ 2.1 */ |
| 186 | #define MMC_VDD_21_22 0x00000200 /* VDD voltage 2.1 ~ 2.2 */ |
| 187 | #define MMC_VDD_22_23 0x00000400 /* VDD voltage 2.2 ~ 2.3 */ |
| 188 | #define MMC_VDD_23_24 0x00000800 /* VDD voltage 2.3 ~ 2.4 */ |
| 189 | #define MMC_VDD_24_25 0x00001000 /* VDD voltage 2.4 ~ 2.5 */ |
| 190 | #define MMC_VDD_25_26 0x00002000 /* VDD voltage 2.5 ~ 2.6 */ |
| 191 | #define MMC_VDD_26_27 0x00004000 /* VDD voltage 2.6 ~ 2.7 */ |
| 192 | #define MMC_VDD_27_28 0x00008000 /* VDD voltage 2.7 ~ 2.8 */ |
| 193 | #define MMC_VDD_28_29 0x00010000 /* VDD voltage 2.8 ~ 2.9 */ |
| 194 | #define MMC_VDD_29_30 0x00020000 /* VDD voltage 2.9 ~ 3.0 */ |
| 195 | #define MMC_VDD_30_31 0x00040000 /* VDD voltage 3.0 ~ 3.1 */ |
| 196 | #define MMC_VDD_31_32 0x00080000 /* VDD voltage 3.1 ~ 3.2 */ |
| 197 | #define MMC_VDD_32_33 0x00100000 /* VDD voltage 3.2 ~ 3.3 */ |
| 198 | #define MMC_VDD_33_34 0x00200000 /* VDD voltage 3.3 ~ 3.4 */ |
| 199 | #define MMC_VDD_34_35 0x00400000 /* VDD voltage 3.4 ~ 3.5 */ |
| 200 | #define MMC_VDD_35_36 0x00800000 /* VDD voltage 3.5 ~ 3.6 */ |
| 201 | |
Pierre Ossman | f218278 | 2005-09-06 15:18:55 -0700 | [diff] [blame] | 202 | unsigned long caps; /* Host capabilities */ |
| 203 | |
| 204 | #define MMC_CAP_4_BIT_DATA (1 << 0) /* Can the host do 4 bit transfers */ |
Pierre Ossman | 23af603 | 2008-07-06 01:10:27 +0200 | [diff] [blame] | 205 | #define MMC_CAP_MMC_HIGHSPEED (1 << 1) /* Can do MMC high-speed timing */ |
| 206 | #define MMC_CAP_SD_HIGHSPEED (1 << 2) /* Can do SD high-speed timing */ |
| 207 | #define MMC_CAP_SDIO_IRQ (1 << 3) /* Can signal pending SDIO IRQs */ |
| 208 | #define MMC_CAP_SPI (1 << 4) /* Talks only SPI protocols */ |
| 209 | #define MMC_CAP_NEEDS_POLL (1 << 5) /* Needs polling for card-detection */ |
Jarkko Lavinen | b30f8af | 2008-11-17 14:35:21 +0200 | [diff] [blame] | 210 | #define MMC_CAP_8_BIT_DATA (1 << 6) /* Can the host do 8 bit transfers */ |
Adrian Hunter | 8ea926b | 2009-09-22 16:44:29 -0700 | [diff] [blame] | 211 | #define MMC_CAP_DISABLE (1 << 7) /* Can the host be disabled */ |
Adrian Hunter | 9feae24 | 2009-09-22 16:44:32 -0700 | [diff] [blame] | 212 | #define MMC_CAP_NONREMOVABLE (1 << 8) /* Nonremovable e.g. eMMC */ |
Jarkko Lavinen | b1ebe38 | 2009-09-22 16:44:34 -0700 | [diff] [blame] | 213 | #define MMC_CAP_WAIT_WHILE_BUSY (1 << 9) /* Waits while card is busy */ |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 214 | #define MMC_CAP_ERASE (1 << 10) /* Allow erase/trim commands */ |
Hanumath Prasad | dfc13e8 | 2010-09-30 17:37:23 -0400 | [diff] [blame] | 215 | #define MMC_CAP_1_8V_DDR (1 << 11) /* can support */ |
| 216 | /* DDR mode at 1.8V */ |
| 217 | #define MMC_CAP_1_2V_DDR (1 << 12) /* can support */ |
| 218 | /* DDR mode at 1.2V */ |
Ohad Ben-Cohen | ed919b0 | 2010-11-19 09:29:09 +0200 | [diff] [blame] | 219 | #define MMC_CAP_POWER_OFF_CARD (1 << 13) /* Can power off after boot */ |
Aries Lee | 22113ef | 2010-12-15 08:14:24 +0100 | [diff] [blame] | 220 | #define MMC_CAP_BUS_WIDTH_TEST (1 << 14) /* CMD14/CMD19 bus width ok */ |
Arindam Nath | f2119df | 2011-05-05 12:18:57 +0530 | [diff] [blame] | 221 | #define MMC_CAP_UHS_SDR12 (1 << 15) /* Host supports UHS SDR12 mode */ |
| 222 | #define MMC_CAP_UHS_SDR25 (1 << 16) /* Host supports UHS SDR25 mode */ |
| 223 | #define MMC_CAP_UHS_SDR50 (1 << 17) /* Host supports UHS SDR50 mode */ |
| 224 | #define MMC_CAP_UHS_SDR104 (1 << 18) /* Host supports UHS SDR104 mode */ |
| 225 | #define MMC_CAP_UHS_DDR50 (1 << 19) /* Host supports UHS DDR50 mode */ |
| 226 | #define MMC_CAP_SET_XPC_330 (1 << 20) /* Host supports >150mA current at 3.3V */ |
| 227 | #define MMC_CAP_SET_XPC_300 (1 << 21) /* Host supports >150mA current at 3.0V */ |
| 228 | #define MMC_CAP_SET_XPC_180 (1 << 22) /* Host supports >150mA current at 1.8V */ |
Arindam Nath | d6d50a1 | 2011-05-05 12:18:59 +0530 | [diff] [blame] | 229 | #define MMC_CAP_DRIVER_TYPE_A (1 << 23) /* Host supports Driver Type A */ |
| 230 | #define MMC_CAP_DRIVER_TYPE_C (1 << 24) /* Host supports Driver Type C */ |
| 231 | #define MMC_CAP_DRIVER_TYPE_D (1 << 25) /* Host supports Driver Type D */ |
Arindam Nath | 5371c92 | 2011-05-05 12:19:02 +0530 | [diff] [blame] | 232 | #define MMC_CAP_MAX_CURRENT_200 (1 << 26) /* Host max current limit is 200mA */ |
| 233 | #define MMC_CAP_MAX_CURRENT_400 (1 << 27) /* Host max current limit is 400mA */ |
| 234 | #define MMC_CAP_MAX_CURRENT_600 (1 << 28) /* Host max current limit is 600mA */ |
| 235 | #define MMC_CAP_MAX_CURRENT_800 (1 << 29) /* Host max current limit is 800mA */ |
Andrei Warkentin | d0c97cf | 2011-05-23 15:06:36 -0500 | [diff] [blame] | 236 | #define MMC_CAP_CMD23 (1 << 30) /* CMD23 supported. */ |
Adrian Hunter | b249951 | 2011-08-29 16:42:11 +0300 | [diff] [blame] | 237 | #define MMC_CAP_HW_RESET (1 << 31) /* Hardware reset */ |
Pierre Ossman | f218278 | 2005-09-06 15:18:55 -0700 | [diff] [blame] | 238 | |
Adrian Hunter | f7c56ef | 2011-09-23 12:48:21 +0300 | [diff] [blame] | 239 | unsigned int caps2; /* More host capabilities */ |
| 240 | |
| 241 | #define MMC_CAP2_BOOTPART_NOACC (1 << 0) /* Boot partition no access */ |
Girish K S | bec8726 | 2011-10-13 12:04:16 +0530 | [diff] [blame] | 242 | #define MMC_CAP2_POWEROFF_NOTIFY (1 << 2) /* Notify poweroff supported */ |
Adrian Hunter | f7c56ef | 2011-09-23 12:48:21 +0300 | [diff] [blame] | 243 | |
Nicolas Pitre | da68c4e | 2010-03-05 13:43:31 -0800 | [diff] [blame] | 244 | mmc_pm_flag_t pm_caps; /* supported pm features */ |
Girish K S | bec8726 | 2011-10-13 12:04:16 +0530 | [diff] [blame] | 245 | unsigned int power_notify_type; |
| 246 | #define MMC_HOST_PW_NOTIFY_NONE 0 |
| 247 | #define MMC_HOST_PW_NOTIFY_SHORT 1 |
| 248 | #define MMC_HOST_PW_NOTIFY_LONG 2 |
Nicolas Pitre | da68c4e | 2010-03-05 13:43:31 -0800 | [diff] [blame] | 249 | |
Linus Walleij | 0456683 | 2010-11-08 21:36:50 -0500 | [diff] [blame] | 250 | #ifdef CONFIG_MMC_CLKGATE |
| 251 | int clk_requests; /* internal reference counter */ |
| 252 | unsigned int clk_delay; /* number of MCI clk hold cycles */ |
| 253 | bool clk_gated; /* clock gated */ |
| 254 | struct work_struct clk_gate_work; /* delayed clock gate */ |
| 255 | unsigned int clk_old; /* old clock value cache */ |
| 256 | spinlock_t clk_lock; /* lock for clk fields */ |
Chris Ball | 86f315b | 2011-05-16 11:32:26 -0400 | [diff] [blame] | 257 | struct mutex clk_gate_mutex; /* mutex for clock gating */ |
Linus Walleij | 0456683 | 2010-11-08 21:36:50 -0500 | [diff] [blame] | 258 | #endif |
| 259 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | /* host specific block data */ |
| 261 | unsigned int max_seg_size; /* see blk_queue_max_segment_size */ |
Martin K. Petersen | a36274e | 2010-09-10 01:33:59 -0400 | [diff] [blame] | 262 | unsigned short max_segs; /* see blk_queue_max_segments */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | unsigned short unused; |
Pierre Ossman | 55db890 | 2006-11-21 17:55:45 +0100 | [diff] [blame] | 264 | unsigned int max_req_size; /* maximum number of bytes in one req */ |
Pierre Ossman | fe4a3c7 | 2006-11-21 17:54:23 +0100 | [diff] [blame] | 265 | unsigned int max_blk_size; /* maximum size of one mmc block */ |
Pierre Ossman | 55db890 | 2006-11-21 17:55:45 +0100 | [diff] [blame] | 266 | unsigned int max_blk_count; /* maximum number of blocks in one req */ |
Adrian Hunter | e056a1b | 2011-06-28 17:16:02 +0300 | [diff] [blame] | 267 | unsigned int max_discard_to; /* max. discard timeout in ms */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | |
| 269 | /* private data */ |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 270 | spinlock_t lock; /* lock for claim and bus ops */ |
| 271 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | struct mmc_ios ios; /* current io bus settings */ |
| 273 | u32 ocr; /* the current OCR setting */ |
| 274 | |
David Brownell | 9701858 | 2007-08-08 09:09:01 -0700 | [diff] [blame] | 275 | /* group bitfields together to minimize padding */ |
| 276 | unsigned int use_spi_crc:1; |
| 277 | unsigned int claimed:1; /* host exclusively claimed */ |
| 278 | unsigned int bus_dead:1; /* bus has been released */ |
| 279 | #ifdef CONFIG_MMC_DEBUG |
| 280 | unsigned int removed:1; /* host is being removed */ |
| 281 | #endif |
| 282 | |
Adrian Hunter | 8ea926b | 2009-09-22 16:44:29 -0700 | [diff] [blame] | 283 | /* Only used with MMC_CAP_DISABLE */ |
| 284 | int enabled; /* host is enabled */ |
Maxim Levitsky | 4c2ef25 | 2010-08-10 18:01:41 -0700 | [diff] [blame] | 285 | int rescan_disable; /* disable card detection */ |
Adrian Hunter | 8ea926b | 2009-09-22 16:44:29 -0700 | [diff] [blame] | 286 | int nesting_cnt; /* "enable" nesting count */ |
| 287 | int en_dis_recurs; /* detect recursion */ |
| 288 | unsigned int disable_delay; /* disable delay in msecs */ |
| 289 | struct delayed_work disable; /* disabling work */ |
| 290 | |
Pierre Ossman | b855885 | 2007-01-03 19:47:29 +0100 | [diff] [blame] | 291 | struct mmc_card *card; /* device attached to this host */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | |
| 293 | wait_queue_head_t wq; |
Adrian Hunter | 319a3f1 | 2009-09-22 16:44:30 -0700 | [diff] [blame] | 294 | struct task_struct *claimer; /* task that has host claimed */ |
| 295 | int claim_cnt; /* "claim" nesting count */ |
Pierre Ossman | f22ee4e | 2006-12-26 15:11:23 +0100 | [diff] [blame] | 296 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 297 | struct delayed_work detect; |
Russell King | 01357dc | 2005-09-08 22:46:00 +0100 | [diff] [blame] | 298 | |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 299 | const struct mmc_bus_ops *bus_ops; /* current bus driver */ |
| 300 | unsigned int bus_refs; /* reference counter */ |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 301 | |
Nicolas Pitre | d1496c3 | 2007-06-30 16:29:41 +0200 | [diff] [blame] | 302 | unsigned int sdio_irqs; |
| 303 | struct task_struct *sdio_irq_thread; |
| 304 | atomic_t sdio_irq_thread_abort; |
| 305 | |
Nicolas Pitre | da68c4e | 2010-03-05 13:43:31 -0800 | [diff] [blame] | 306 | mmc_pm_flag_t pm_flags; /* requested pm features */ |
| 307 | |
Pierre Ossman | af8350c | 2007-09-24 07:15:48 +0200 | [diff] [blame] | 308 | #ifdef CONFIG_LEDS_TRIGGERS |
| 309 | struct led_trigger *led; /* activity led */ |
| 310 | #endif |
| 311 | |
Linus Walleij | 99fc513 | 2010-09-29 01:08:27 -0400 | [diff] [blame] | 312 | #ifdef CONFIG_REGULATOR |
| 313 | bool regulator_enabled; /* regulator state */ |
| 314 | #endif |
| 315 | |
Haavard Skinnemoen | 6edd8ee | 2008-07-24 14:18:57 +0200 | [diff] [blame] | 316 | struct dentry *debugfs_root; |
| 317 | |
Per Forlin | aa8b683 | 2011-07-01 18:55:22 +0200 | [diff] [blame] | 318 | struct mmc_async_req *areq; /* active async req */ |
| 319 | |
Per Forlin | 1b676f7 | 2011-08-19 14:52:37 +0200 | [diff] [blame] | 320 | #ifdef CONFIG_FAIL_MMC_REQUEST |
| 321 | struct fault_attr fail_mmc_request; |
| 322 | #endif |
| 323 | |
Russell King | 01357dc | 2005-09-08 22:46:00 +0100 | [diff] [blame] | 324 | unsigned long private[0] ____cacheline_aligned; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | }; |
| 326 | |
| 327 | extern struct mmc_host *mmc_alloc_host(int extra, struct device *); |
| 328 | extern int mmc_add_host(struct mmc_host *); |
| 329 | extern void mmc_remove_host(struct mmc_host *); |
| 330 | extern void mmc_free_host(struct mmc_host *); |
| 331 | |
Russell King | 01357dc | 2005-09-08 22:46:00 +0100 | [diff] [blame] | 332 | static inline void *mmc_priv(struct mmc_host *host) |
| 333 | { |
| 334 | return (void *)host->private; |
| 335 | } |
| 336 | |
David Brownell | 9701858 | 2007-08-08 09:09:01 -0700 | [diff] [blame] | 337 | #define mmc_host_is_spi(host) ((host)->caps & MMC_CAP_SPI) |
| 338 | |
Greg Kroah-Hartman | fcaf71f | 2006-09-12 17:00:10 +0200 | [diff] [blame] | 339 | #define mmc_dev(x) ((x)->parent) |
Pierre Ossman | 11354d0 | 2007-01-14 01:41:45 +0100 | [diff] [blame] | 340 | #define mmc_classdev(x) (&(x)->class_dev) |
Kay Sievers | d1b2686 | 2008-11-08 21:37:46 +0100 | [diff] [blame] | 341 | #define mmc_hostname(x) (dev_name(&(x)->class_dev)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | |
Matt Fleming | 1a13f8f | 2010-05-26 14:42:08 -0700 | [diff] [blame] | 343 | extern int mmc_suspend_host(struct mmc_host *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | extern int mmc_resume_host(struct mmc_host *); |
| 345 | |
Ohad Ben-Cohen | 12ae637 | 2010-10-02 13:54:06 +0200 | [diff] [blame] | 346 | extern int mmc_power_save_host(struct mmc_host *host); |
| 347 | extern int mmc_power_restore_host(struct mmc_host *host); |
Adrian Hunter | eae1aee | 2009-09-22 16:44:33 -0700 | [diff] [blame] | 348 | |
Richard Purdie | 8dc0033 | 2005-09-08 17:53:01 +0100 | [diff] [blame] | 349 | extern void mmc_detect_change(struct mmc_host *, unsigned long delay); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | extern void mmc_request_done(struct mmc_host *, struct mmc_request *); |
| 351 | |
Nicolas Pitre | 17b759a | 2007-07-24 02:09:39 -0400 | [diff] [blame] | 352 | static inline void mmc_signal_sdio_irq(struct mmc_host *host) |
| 353 | { |
| 354 | host->ops->enable_sdio_irq(host, 0); |
| 355 | wake_up_process(host->sdio_irq_thread); |
| 356 | } |
| 357 | |
David Brownell | 5c13941 | 2009-03-11 03:30:43 -0800 | [diff] [blame] | 358 | struct regulator; |
| 359 | |
Linus Walleij | 99fc513 | 2010-09-29 01:08:27 -0400 | [diff] [blame] | 360 | #ifdef CONFIG_REGULATOR |
David Brownell | 5c13941 | 2009-03-11 03:30:43 -0800 | [diff] [blame] | 361 | int mmc_regulator_get_ocrmask(struct regulator *supply); |
Linus Walleij | 99fc513 | 2010-09-29 01:08:27 -0400 | [diff] [blame] | 362 | int mmc_regulator_set_ocr(struct mmc_host *mmc, |
| 363 | struct regulator *supply, |
| 364 | unsigned short vdd_bit); |
| 365 | #else |
| 366 | static inline int mmc_regulator_get_ocrmask(struct regulator *supply) |
| 367 | { |
| 368 | return 0; |
| 369 | } |
| 370 | |
| 371 | static inline int mmc_regulator_set_ocr(struct mmc_host *mmc, |
| 372 | struct regulator *supply, |
| 373 | unsigned short vdd_bit) |
| 374 | { |
| 375 | return 0; |
| 376 | } |
| 377 | #endif |
David Brownell | 5c13941 | 2009-03-11 03:30:43 -0800 | [diff] [blame] | 378 | |
Jarkko Lavinen | b1ebe38 | 2009-09-22 16:44:34 -0700 | [diff] [blame] | 379 | int mmc_card_awake(struct mmc_host *host); |
| 380 | int mmc_card_sleep(struct mmc_host *host); |
| 381 | int mmc_card_can_sleep(struct mmc_host *host); |
| 382 | |
Adrian Hunter | 8ea926b | 2009-09-22 16:44:29 -0700 | [diff] [blame] | 383 | int mmc_host_enable(struct mmc_host *host); |
| 384 | int mmc_host_disable(struct mmc_host *host); |
| 385 | int mmc_host_lazy_disable(struct mmc_host *host); |
Maxim Levitsky | 4c2ef25 | 2010-08-10 18:01:41 -0700 | [diff] [blame] | 386 | int mmc_pm_notify(struct notifier_block *notify_block, unsigned long, void *); |
Adrian Hunter | 8ea926b | 2009-09-22 16:44:29 -0700 | [diff] [blame] | 387 | |
| 388 | static inline void mmc_set_disable_delay(struct mmc_host *host, |
| 389 | unsigned int disable_delay) |
| 390 | { |
| 391 | host->disable_delay = disable_delay; |
| 392 | } |
| 393 | |
Matt Fleming | 71d7d3d | 2010-09-27 09:42:19 +0100 | [diff] [blame] | 394 | /* Module parameter */ |
| 395 | extern int mmc_assume_removable; |
| 396 | |
| 397 | static inline int mmc_card_is_removable(struct mmc_host *host) |
| 398 | { |
| 399 | return !(host->caps & MMC_CAP_NONREMOVABLE) && mmc_assume_removable; |
| 400 | } |
| 401 | |
Ohad Ben-Cohen | a5e9425 | 2011-04-05 17:43:20 +0300 | [diff] [blame] | 402 | static inline int mmc_card_keep_power(struct mmc_host *host) |
Ohad Ben-Cohen | 080bc97 | 2010-11-28 07:21:29 +0200 | [diff] [blame] | 403 | { |
| 404 | return host->pm_flags & MMC_PM_KEEP_POWER; |
| 405 | } |
| 406 | |
Ohad Ben-Cohen | 6b93d01f | 2011-04-05 17:43:21 +0300 | [diff] [blame] | 407 | static inline int mmc_card_wake_sdio_irq(struct mmc_host *host) |
| 408 | { |
| 409 | return host->pm_flags & MMC_PM_WAKE_SDIO_IRQ; |
| 410 | } |
Andrei Warkentin | d0c97cf | 2011-05-23 15:06:36 -0500 | [diff] [blame] | 411 | |
| 412 | static inline int mmc_host_cmd23(struct mmc_host *host) |
| 413 | { |
| 414 | return host->caps & MMC_CAP_CMD23; |
| 415 | } |
Adrian Hunter | f7c56ef | 2011-09-23 12:48:21 +0300 | [diff] [blame] | 416 | |
| 417 | static inline int mmc_boot_partition_access(struct mmc_host *host) |
| 418 | { |
| 419 | return !(host->caps2 & MMC_CAP2_BOOTPART_NOACC); |
| 420 | } |
| 421 | |
Robert P. J. Day | 100e918 | 2011-05-27 16:04:03 -0400 | [diff] [blame] | 422 | #endif /* LINUX_MMC_HOST_H */ |