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> |
Colin Cross | 07b26cd | 2011-09-07 17:28:58 -0700 | [diff] [blame] | 15 | #include <linux/wakelock.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 | |
| 60 | unsigned char ddr; /* dual data rate used */ |
| 61 | |
| 62 | #define MMC_SDR_MODE 0 |
Adrian Hunter | 49e3b5a | 2010-10-11 12:43:50 +0300 | [diff] [blame] | 63 | #define MMC_1_2V_DDR_MODE 1 |
| 64 | #define MMC_1_8V_DDR_MODE 2 |
Arindam Nath | f2119df | 2011-05-05 12:18:57 +0530 | [diff] [blame] | 65 | |
| 66 | unsigned char signal_voltage; /* signalling voltage (1.8V or 3.3V) */ |
| 67 | |
| 68 | #define MMC_SIGNAL_VOLTAGE_330 0 |
| 69 | #define MMC_SIGNAL_VOLTAGE_180 1 |
Philip Rakity | 4c4cb17 | 2011-05-13 11:17:18 +0530 | [diff] [blame] | 70 | #define MMC_SIGNAL_VOLTAGE_120 2 |
Arindam Nath | d6d50a1 | 2011-05-05 12:18:59 +0530 | [diff] [blame] | 71 | |
| 72 | unsigned char drv_type; /* driver type (A, B, C, D) */ |
| 73 | |
| 74 | #define MMC_SET_DRIVER_TYPE_B 0 |
| 75 | #define MMC_SET_DRIVER_TYPE_A 1 |
| 76 | #define MMC_SET_DRIVER_TYPE_C 2 |
| 77 | #define MMC_SET_DRIVER_TYPE_D 3 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | }; |
| 79 | |
| 80 | struct mmc_host_ops { |
Adrian Hunter | 8ea926b | 2009-09-22 16:44:29 -0700 | [diff] [blame] | 81 | /* |
| 82 | * Hosts that support power saving can use the 'enable' and 'disable' |
| 83 | * methods to exit and enter power saving states. 'enable' is called |
| 84 | * when the host is claimed and 'disable' is called (or scheduled with |
| 85 | * a delay) when the host is released. The 'disable' is scheduled if |
| 86 | * the disable delay set by 'mmc_set_disable_delay()' is non-zero, |
| 87 | * otherwise 'disable' is called immediately. 'disable' may be |
| 88 | * scheduled repeatedly, to permit ever greater power saving at the |
| 89 | * expense of ever greater latency to re-enable. Rescheduling is |
| 90 | * determined by the return value of the 'disable' method. A positive |
| 91 | * value gives the delay in milliseconds. |
| 92 | * |
| 93 | * In the case where a host function (like set_ios) may be called |
| 94 | * with or without the host claimed, enabling and disabling can be |
| 95 | * done directly and will nest correctly. Call 'mmc_host_enable()' and |
| 96 | * 'mmc_host_lazy_disable()' for this purpose, but note that these |
| 97 | * functions must be paired. |
| 98 | * |
| 99 | * Alternatively, 'mmc_host_enable()' may be paired with |
| 100 | * 'mmc_host_disable()' which calls 'disable' immediately. In this |
| 101 | * case the 'disable' method will be called with 'lazy' set to 0. |
| 102 | * This is mainly useful for error paths. |
| 103 | * |
| 104 | * Because lazy disable may be called from a work queue, the 'disable' |
| 105 | * method must claim the host when 'lazy' != 0, which will work |
| 106 | * correctly because recursion is detected and handled. |
| 107 | */ |
| 108 | int (*enable)(struct mmc_host *host); |
| 109 | int (*disable)(struct mmc_host *host, int lazy); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | void (*request)(struct mmc_host *host, struct mmc_request *req); |
Anton Vorontsov | 28f5248 | 2008-06-17 18:17:15 +0400 | [diff] [blame] | 111 | /* |
| 112 | * Avoid calling these three functions too often or in a "fast path", |
| 113 | * since underlaying controller might implement them in an expensive |
| 114 | * and/or slow way. |
| 115 | * |
| 116 | * Also note that these functions might sleep, so don't call them |
| 117 | * in the atomic contexts! |
Anton Vorontsov | 08f80bb | 2008-06-17 18:17:39 +0400 | [diff] [blame] | 118 | * |
| 119 | * Return values for the get_ro callback should be: |
| 120 | * 0 for a read/write card |
| 121 | * 1 for a read-only card |
| 122 | * -ENOSYS when not supported (equal to NULL callback) |
| 123 | * or a negative errno value when something bad happened |
| 124 | * |
Thomas Petazzoni | ee63a7d | 2008-09-02 10:14:13 +0200 | [diff] [blame] | 125 | * Return values for the get_cd callback should be: |
Anton Vorontsov | 08f80bb | 2008-06-17 18:17:39 +0400 | [diff] [blame] | 126 | * 0 for a absent card |
| 127 | * 1 for a present card |
| 128 | * -ENOSYS when not supported (equal to NULL callback) |
| 129 | * or a negative errno value when something bad happened |
Anton Vorontsov | 28f5248 | 2008-06-17 18:17:15 +0400 | [diff] [blame] | 130 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | void (*set_ios)(struct mmc_host *host, struct mmc_ios *ios); |
Pierre Ossman | a00fc09 | 2005-09-06 15:18:52 -0700 | [diff] [blame] | 132 | int (*get_ro)(struct mmc_host *host); |
Anton Vorontsov | 28f5248 | 2008-06-17 18:17:15 +0400 | [diff] [blame] | 133 | int (*get_cd)(struct mmc_host *host); |
| 134 | |
Nicolas Pitre | 17b759a | 2007-07-24 02:09:39 -0400 | [diff] [blame] | 135 | void (*enable_sdio_irq)(struct mmc_host *host, int enable); |
Daniel Mack | 3fcb027 | 2010-04-01 10:03:25 +0200 | [diff] [blame] | 136 | |
| 137 | /* optional callback for HC quirks */ |
| 138 | void (*init_card)(struct mmc_host *host, struct mmc_card *card); |
Arindam Nath | f2119df | 2011-05-05 12:18:57 +0530 | [diff] [blame] | 139 | |
| 140 | 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] | 141 | int (*execute_tuning)(struct mmc_host *host); |
Arindam Nath | 4d55c5a | 2011-05-05 12:19:05 +0530 | [diff] [blame] | 142 | void (*enable_preset_value)(struct mmc_host *host, bool enable); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | }; |
| 144 | |
| 145 | struct mmc_card; |
| 146 | struct device; |
| 147 | |
| 148 | struct mmc_host { |
Greg Kroah-Hartman | fcaf71f | 2006-09-12 17:00:10 +0200 | [diff] [blame] | 149 | struct device *parent; |
| 150 | struct device class_dev; |
Russell King | dce7737 | 2005-08-19 09:42:52 +0100 | [diff] [blame] | 151 | int index; |
David Brownell | f57b225 | 2006-09-03 06:43:33 -0700 | [diff] [blame] | 152 | const struct mmc_host_ops *ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | unsigned int f_min; |
| 154 | unsigned int f_max; |
Hein Tibosch | 88ae8b8 | 2010-09-06 09:37:19 +0800 | [diff] [blame] | 155 | unsigned int f_init; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | u32 ocr_avail; |
Takashi Iwai | 8f230f4 | 2010-12-08 10:04:30 +0100 | [diff] [blame] | 157 | u32 ocr_avail_sdio; /* SDIO-specific OCR */ |
| 158 | u32 ocr_avail_sd; /* SD-specific OCR */ |
| 159 | u32 ocr_avail_mmc; /* MMC-specific OCR */ |
Maxim Levitsky | 4c2ef25 | 2010-08-10 18:01:41 -0700 | [diff] [blame] | 160 | struct notifier_block pm_notify; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | |
Philip Langdale | 55556da | 2007-03-16 19:39:00 -0700 | [diff] [blame] | 162 | #define MMC_VDD_165_195 0x00000080 /* VDD voltage 1.65 - 1.95 */ |
Pierre Ossman | f74d132 | 2007-02-09 22:49:31 +0100 | [diff] [blame] | 163 | #define MMC_VDD_20_21 0x00000100 /* VDD voltage 2.0 ~ 2.1 */ |
| 164 | #define MMC_VDD_21_22 0x00000200 /* VDD voltage 2.1 ~ 2.2 */ |
| 165 | #define MMC_VDD_22_23 0x00000400 /* VDD voltage 2.2 ~ 2.3 */ |
| 166 | #define MMC_VDD_23_24 0x00000800 /* VDD voltage 2.3 ~ 2.4 */ |
| 167 | #define MMC_VDD_24_25 0x00001000 /* VDD voltage 2.4 ~ 2.5 */ |
| 168 | #define MMC_VDD_25_26 0x00002000 /* VDD voltage 2.5 ~ 2.6 */ |
| 169 | #define MMC_VDD_26_27 0x00004000 /* VDD voltage 2.6 ~ 2.7 */ |
| 170 | #define MMC_VDD_27_28 0x00008000 /* VDD voltage 2.7 ~ 2.8 */ |
| 171 | #define MMC_VDD_28_29 0x00010000 /* VDD voltage 2.8 ~ 2.9 */ |
| 172 | #define MMC_VDD_29_30 0x00020000 /* VDD voltage 2.9 ~ 3.0 */ |
| 173 | #define MMC_VDD_30_31 0x00040000 /* VDD voltage 3.0 ~ 3.1 */ |
| 174 | #define MMC_VDD_31_32 0x00080000 /* VDD voltage 3.1 ~ 3.2 */ |
| 175 | #define MMC_VDD_32_33 0x00100000 /* VDD voltage 3.2 ~ 3.3 */ |
| 176 | #define MMC_VDD_33_34 0x00200000 /* VDD voltage 3.3 ~ 3.4 */ |
| 177 | #define MMC_VDD_34_35 0x00400000 /* VDD voltage 3.4 ~ 3.5 */ |
| 178 | #define MMC_VDD_35_36 0x00800000 /* VDD voltage 3.5 ~ 3.6 */ |
| 179 | |
Pierre Ossman | f218278 | 2005-09-06 15:18:55 -0700 | [diff] [blame] | 180 | unsigned long caps; /* Host capabilities */ |
| 181 | |
| 182 | #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] | 183 | #define MMC_CAP_MMC_HIGHSPEED (1 << 1) /* Can do MMC high-speed timing */ |
| 184 | #define MMC_CAP_SD_HIGHSPEED (1 << 2) /* Can do SD high-speed timing */ |
| 185 | #define MMC_CAP_SDIO_IRQ (1 << 3) /* Can signal pending SDIO IRQs */ |
| 186 | #define MMC_CAP_SPI (1 << 4) /* Talks only SPI protocols */ |
| 187 | #define MMC_CAP_NEEDS_POLL (1 << 5) /* Needs polling for card-detection */ |
Jarkko Lavinen | b30f8af | 2008-11-17 14:35:21 +0200 | [diff] [blame] | 188 | #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] | 189 | #define MMC_CAP_DISABLE (1 << 7) /* Can the host be disabled */ |
Adrian Hunter | 9feae24 | 2009-09-22 16:44:32 -0700 | [diff] [blame] | 190 | #define MMC_CAP_NONREMOVABLE (1 << 8) /* Nonremovable e.g. eMMC */ |
Jarkko Lavinen | b1ebe38 | 2009-09-22 16:44:34 -0700 | [diff] [blame] | 191 | #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] | 192 | #define MMC_CAP_ERASE (1 << 10) /* Allow erase/trim commands */ |
Hanumath Prasad | dfc13e8 | 2010-09-30 17:37:23 -0400 | [diff] [blame] | 193 | #define MMC_CAP_1_8V_DDR (1 << 11) /* can support */ |
| 194 | /* DDR mode at 1.8V */ |
| 195 | #define MMC_CAP_1_2V_DDR (1 << 12) /* can support */ |
| 196 | /* DDR mode at 1.2V */ |
Ohad Ben-Cohen | ed919b0 | 2010-11-19 09:29:09 +0200 | [diff] [blame] | 197 | #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] | 198 | #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] | 199 | #define MMC_CAP_UHS_SDR12 (1 << 15) /* Host supports UHS SDR12 mode */ |
| 200 | #define MMC_CAP_UHS_SDR25 (1 << 16) /* Host supports UHS SDR25 mode */ |
| 201 | #define MMC_CAP_UHS_SDR50 (1 << 17) /* Host supports UHS SDR50 mode */ |
| 202 | #define MMC_CAP_UHS_SDR104 (1 << 18) /* Host supports UHS SDR104 mode */ |
| 203 | #define MMC_CAP_UHS_DDR50 (1 << 19) /* Host supports UHS DDR50 mode */ |
| 204 | #define MMC_CAP_SET_XPC_330 (1 << 20) /* Host supports >150mA current at 3.3V */ |
| 205 | #define MMC_CAP_SET_XPC_300 (1 << 21) /* Host supports >150mA current at 3.0V */ |
| 206 | #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] | 207 | #define MMC_CAP_DRIVER_TYPE_A (1 << 23) /* Host supports Driver Type A */ |
| 208 | #define MMC_CAP_DRIVER_TYPE_C (1 << 24) /* Host supports Driver Type C */ |
| 209 | #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] | 210 | #define MMC_CAP_MAX_CURRENT_200 (1 << 26) /* Host max current limit is 200mA */ |
| 211 | #define MMC_CAP_MAX_CURRENT_400 (1 << 27) /* Host max current limit is 400mA */ |
| 212 | #define MMC_CAP_MAX_CURRENT_600 (1 << 28) /* Host max current limit is 600mA */ |
| 213 | #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] | 214 | #define MMC_CAP_CMD23 (1 << 30) /* CMD23 supported. */ |
Pierre Ossman | f218278 | 2005-09-06 15:18:55 -0700 | [diff] [blame] | 215 | |
Nicolas Pitre | da68c4e | 2010-03-05 13:43:31 -0800 | [diff] [blame] | 216 | mmc_pm_flag_t pm_caps; /* supported pm features */ |
| 217 | |
Linus Walleij | 0456683 | 2010-11-08 21:36:50 -0500 | [diff] [blame] | 218 | #ifdef CONFIG_MMC_CLKGATE |
| 219 | int clk_requests; /* internal reference counter */ |
| 220 | unsigned int clk_delay; /* number of MCI clk hold cycles */ |
| 221 | bool clk_gated; /* clock gated */ |
Sujit Reddy Thumma | 0d0bc29 | 2011-10-19 11:40:04 +0530 | [diff] [blame] | 222 | struct delayed_work clk_gate_work; /* delayed clock gate */ |
Linus Walleij | 0456683 | 2010-11-08 21:36:50 -0500 | [diff] [blame] | 223 | unsigned int clk_old; /* old clock value cache */ |
| 224 | spinlock_t clk_lock; /* lock for clk fields */ |
Chris Ball | 5fdf175 | 2011-05-16 11:32:26 -0400 | [diff] [blame] | 225 | struct mutex clk_gate_mutex; /* mutex for clock gating */ |
Sujit Reddy Thumma | 0d0bc29 | 2011-10-19 11:40:04 +0530 | [diff] [blame] | 226 | struct device_attribute clkgate_delay_attr; |
| 227 | unsigned long clkgate_delay; |
Linus Walleij | 0456683 | 2010-11-08 21:36:50 -0500 | [diff] [blame] | 228 | #endif |
| 229 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | /* host specific block data */ |
| 231 | unsigned int max_seg_size; /* see blk_queue_max_segment_size */ |
Martin K. Petersen | a36274e | 2010-09-10 01:33:59 -0400 | [diff] [blame] | 232 | unsigned short max_segs; /* see blk_queue_max_segments */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | unsigned short unused; |
Pierre Ossman | 55db890 | 2006-11-21 17:55:45 +0100 | [diff] [blame] | 234 | unsigned int max_req_size; /* maximum number of bytes in one req */ |
Pierre Ossman | fe4a3c7 | 2006-11-21 17:54:23 +0100 | [diff] [blame] | 235 | unsigned int max_blk_size; /* maximum size of one mmc block */ |
Pierre Ossman | 55db890 | 2006-11-21 17:55:45 +0100 | [diff] [blame] | 236 | unsigned int max_blk_count; /* maximum number of blocks in one req */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | |
| 238 | /* private data */ |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 239 | spinlock_t lock; /* lock for claim and bus ops */ |
| 240 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | struct mmc_ios ios; /* current io bus settings */ |
| 242 | u32 ocr; /* the current OCR setting */ |
| 243 | |
David Brownell | 9701858 | 2007-08-08 09:09:01 -0700 | [diff] [blame] | 244 | /* group bitfields together to minimize padding */ |
| 245 | unsigned int use_spi_crc:1; |
| 246 | unsigned int claimed:1; /* host exclusively claimed */ |
| 247 | unsigned int bus_dead:1; /* bus has been released */ |
| 248 | #ifdef CONFIG_MMC_DEBUG |
| 249 | unsigned int removed:1; /* host is being removed */ |
| 250 | #endif |
| 251 | |
Adrian Hunter | 8ea926b | 2009-09-22 16:44:29 -0700 | [diff] [blame] | 252 | /* Only used with MMC_CAP_DISABLE */ |
| 253 | int enabled; /* host is enabled */ |
Maxim Levitsky | 4c2ef25 | 2010-08-10 18:01:41 -0700 | [diff] [blame] | 254 | int rescan_disable; /* disable card detection */ |
Adrian Hunter | 8ea926b | 2009-09-22 16:44:29 -0700 | [diff] [blame] | 255 | int nesting_cnt; /* "enable" nesting count */ |
| 256 | int en_dis_recurs; /* detect recursion */ |
| 257 | unsigned int disable_delay; /* disable delay in msecs */ |
| 258 | struct delayed_work disable; /* disabling work */ |
| 259 | |
Pierre Ossman | b855885 | 2007-01-03 19:47:29 +0100 | [diff] [blame] | 260 | struct mmc_card *card; /* device attached to this host */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | |
| 262 | wait_queue_head_t wq; |
Adrian Hunter | 319a3f1 | 2009-09-22 16:44:30 -0700 | [diff] [blame] | 263 | struct task_struct *claimer; /* task that has host claimed */ |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 264 | struct task_struct *suspend_task; |
Adrian Hunter | 319a3f1 | 2009-09-22 16:44:30 -0700 | [diff] [blame] | 265 | int claim_cnt; /* "claim" nesting count */ |
Pierre Ossman | f22ee4e | 2006-12-26 15:11:23 +0100 | [diff] [blame] | 266 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 267 | struct delayed_work detect; |
Colin Cross | 07b26cd | 2011-09-07 17:28:58 -0700 | [diff] [blame] | 268 | struct wake_lock detect_wake_lock; |
Adrian Hunter | 8b581b0 | 2011-11-28 16:22:00 +0200 | [diff] [blame^] | 269 | int detect_change; /* card detect flag */ |
Russell King | 01357dc | 2005-09-08 22:46:00 +0100 | [diff] [blame] | 270 | |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 271 | const struct mmc_bus_ops *bus_ops; /* current bus driver */ |
| 272 | unsigned int bus_refs; /* reference counter */ |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 273 | |
San Mehat | 10797cf | 2009-07-30 07:55:28 -0700 | [diff] [blame] | 274 | unsigned int bus_resume_flags; |
| 275 | #define MMC_BUSRESUME_MANUAL_RESUME (1 << 0) |
| 276 | #define MMC_BUSRESUME_NEEDS_RESUME (1 << 1) |
| 277 | |
Nicolas Pitre | d1496c3 | 2007-06-30 16:29:41 +0200 | [diff] [blame] | 278 | unsigned int sdio_irqs; |
| 279 | struct task_struct *sdio_irq_thread; |
| 280 | atomic_t sdio_irq_thread_abort; |
| 281 | |
Nicolas Pitre | da68c4e | 2010-03-05 13:43:31 -0800 | [diff] [blame] | 282 | mmc_pm_flag_t pm_flags; /* requested pm features */ |
| 283 | |
Pierre Ossman | af8350c | 2007-09-24 07:15:48 +0200 | [diff] [blame] | 284 | #ifdef CONFIG_LEDS_TRIGGERS |
| 285 | struct led_trigger *led; /* activity led */ |
| 286 | #endif |
| 287 | |
Linus Walleij | 99fc513 | 2010-09-29 01:08:27 -0400 | [diff] [blame] | 288 | #ifdef CONFIG_REGULATOR |
| 289 | bool regulator_enabled; /* regulator state */ |
| 290 | #endif |
| 291 | |
Haavard Skinnemoen | 6edd8ee | 2008-07-24 14:18:57 +0200 | [diff] [blame] | 292 | struct dentry *debugfs_root; |
| 293 | |
San Mehat | 9a24820 | 2008-04-14 15:22:49 -0700 | [diff] [blame] | 294 | #ifdef CONFIG_MMC_EMBEDDED_SDIO |
| 295 | struct { |
| 296 | struct sdio_cis *cis; |
| 297 | struct sdio_cccr *cccr; |
| 298 | struct sdio_embedded_func *funcs; |
| 299 | int num_funcs; |
| 300 | } embedded_sdio_data; |
| 301 | #endif |
| 302 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 303 | #ifdef CONFIG_MMC_PERF_PROFILING |
| 304 | struct { |
| 305 | |
| 306 | unsigned long rbytes_mmcq; /* Rd bytes MMC queue */ |
| 307 | unsigned long wbytes_mmcq; /* Wr bytes MMC queue */ |
| 308 | unsigned long rbytes_drv; /* Rd bytes MMC Host */ |
| 309 | unsigned long wbytes_drv; /* Wr bytes MMC Host */ |
| 310 | ktime_t rtime_mmcq; /* Rd time MMC queue */ |
| 311 | ktime_t wtime_mmcq; /* Wr time MMC queue */ |
| 312 | ktime_t rtime_drv; /* Rd time MMC Host */ |
| 313 | ktime_t wtime_drv; /* Wr time MMC Host */ |
| 314 | ktime_t start; |
| 315 | } perf; |
| 316 | #endif |
Russell King | 01357dc | 2005-09-08 22:46:00 +0100 | [diff] [blame] | 317 | unsigned long private[0] ____cacheline_aligned; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | }; |
| 319 | |
| 320 | extern struct mmc_host *mmc_alloc_host(int extra, struct device *); |
| 321 | extern int mmc_add_host(struct mmc_host *); |
| 322 | extern void mmc_remove_host(struct mmc_host *); |
| 323 | extern void mmc_free_host(struct mmc_host *); |
| 324 | |
San Mehat | 9a24820 | 2008-04-14 15:22:49 -0700 | [diff] [blame] | 325 | #ifdef CONFIG_MMC_EMBEDDED_SDIO |
| 326 | extern void mmc_set_embedded_sdio_data(struct mmc_host *host, |
| 327 | struct sdio_cis *cis, |
| 328 | struct sdio_cccr *cccr, |
| 329 | struct sdio_embedded_func *funcs, |
| 330 | int num_funcs); |
| 331 | #endif |
| 332 | |
Russell King | 01357dc | 2005-09-08 22:46:00 +0100 | [diff] [blame] | 333 | static inline void *mmc_priv(struct mmc_host *host) |
| 334 | { |
| 335 | return (void *)host->private; |
| 336 | } |
| 337 | |
David Brownell | 9701858 | 2007-08-08 09:09:01 -0700 | [diff] [blame] | 338 | #define mmc_host_is_spi(host) ((host)->caps & MMC_CAP_SPI) |
| 339 | |
Greg Kroah-Hartman | fcaf71f | 2006-09-12 17:00:10 +0200 | [diff] [blame] | 340 | #define mmc_dev(x) ((x)->parent) |
Pierre Ossman | 11354d0 | 2007-01-14 01:41:45 +0100 | [diff] [blame] | 341 | #define mmc_classdev(x) (&(x)->class_dev) |
Kay Sievers | d1b2686 | 2008-11-08 21:37:46 +0100 | [diff] [blame] | 342 | #define mmc_hostname(x) (dev_name(&(x)->class_dev)) |
San Mehat | 10797cf | 2009-07-30 07:55:28 -0700 | [diff] [blame] | 343 | #define mmc_bus_needs_resume(host) ((host)->bus_resume_flags & MMC_BUSRESUME_NEEDS_RESUME) |
Dmitry Shmidt | 759378a | 2010-10-14 15:20:21 -0700 | [diff] [blame] | 344 | #define mmc_bus_manual_resume(host) ((host)->bus_resume_flags & MMC_BUSRESUME_MANUAL_RESUME) |
San Mehat | 10797cf | 2009-07-30 07:55:28 -0700 | [diff] [blame] | 345 | |
| 346 | static inline void mmc_set_bus_resume_policy(struct mmc_host *host, int manual) |
| 347 | { |
| 348 | if (manual) |
| 349 | host->bus_resume_flags |= MMC_BUSRESUME_MANUAL_RESUME; |
| 350 | else |
| 351 | host->bus_resume_flags &= ~MMC_BUSRESUME_MANUAL_RESUME; |
| 352 | } |
| 353 | |
| 354 | extern int mmc_resume_bus(struct mmc_host *host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | |
Matt Fleming | 1a13f8f | 2010-05-26 14:42:08 -0700 | [diff] [blame] | 356 | extern int mmc_suspend_host(struct mmc_host *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | extern int mmc_resume_host(struct mmc_host *); |
| 358 | |
Ohad Ben-Cohen | 12ae637 | 2010-10-02 13:54:06 +0200 | [diff] [blame] | 359 | extern int mmc_power_save_host(struct mmc_host *host); |
| 360 | extern int mmc_power_restore_host(struct mmc_host *host); |
Adrian Hunter | eae1aee | 2009-09-22 16:44:33 -0700 | [diff] [blame] | 361 | |
Richard Purdie | 8dc0033 | 2005-09-08 17:53:01 +0100 | [diff] [blame] | 362 | extern void mmc_detect_change(struct mmc_host *, unsigned long delay); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | extern void mmc_request_done(struct mmc_host *, struct mmc_request *); |
| 364 | |
Nicolas Pitre | 17b759a | 2007-07-24 02:09:39 -0400 | [diff] [blame] | 365 | static inline void mmc_signal_sdio_irq(struct mmc_host *host) |
| 366 | { |
| 367 | host->ops->enable_sdio_irq(host, 0); |
| 368 | wake_up_process(host->sdio_irq_thread); |
| 369 | } |
| 370 | |
David Brownell | 5c13941 | 2009-03-11 03:30:43 -0800 | [diff] [blame] | 371 | struct regulator; |
| 372 | |
Linus Walleij | 99fc513 | 2010-09-29 01:08:27 -0400 | [diff] [blame] | 373 | #ifdef CONFIG_REGULATOR |
David Brownell | 5c13941 | 2009-03-11 03:30:43 -0800 | [diff] [blame] | 374 | int mmc_regulator_get_ocrmask(struct regulator *supply); |
Linus Walleij | 99fc513 | 2010-09-29 01:08:27 -0400 | [diff] [blame] | 375 | int mmc_regulator_set_ocr(struct mmc_host *mmc, |
| 376 | struct regulator *supply, |
| 377 | unsigned short vdd_bit); |
| 378 | #else |
| 379 | static inline int mmc_regulator_get_ocrmask(struct regulator *supply) |
| 380 | { |
| 381 | return 0; |
| 382 | } |
| 383 | |
| 384 | static inline int mmc_regulator_set_ocr(struct mmc_host *mmc, |
| 385 | struct regulator *supply, |
| 386 | unsigned short vdd_bit) |
| 387 | { |
| 388 | return 0; |
| 389 | } |
| 390 | #endif |
David Brownell | 5c13941 | 2009-03-11 03:30:43 -0800 | [diff] [blame] | 391 | |
Jarkko Lavinen | b1ebe38 | 2009-09-22 16:44:34 -0700 | [diff] [blame] | 392 | int mmc_card_awake(struct mmc_host *host); |
| 393 | int mmc_card_sleep(struct mmc_host *host); |
| 394 | int mmc_card_can_sleep(struct mmc_host *host); |
| 395 | |
Adrian Hunter | 8ea926b | 2009-09-22 16:44:29 -0700 | [diff] [blame] | 396 | int mmc_host_enable(struct mmc_host *host); |
| 397 | int mmc_host_disable(struct mmc_host *host); |
| 398 | int mmc_host_lazy_disable(struct mmc_host *host); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 399 | #ifdef CONFIG_PM |
| 400 | int mmc_pm_notify(struct notifier_block *notify_block, unsigned long mode, |
| 401 | void *unused); |
| 402 | #else |
| 403 | #define mmc_pm_notify NULL |
| 404 | #endif |
Adrian Hunter | 8ea926b | 2009-09-22 16:44:29 -0700 | [diff] [blame] | 405 | |
| 406 | static inline void mmc_set_disable_delay(struct mmc_host *host, |
| 407 | unsigned int disable_delay) |
| 408 | { |
| 409 | host->disable_delay = disable_delay; |
| 410 | } |
| 411 | |
Matt Fleming | 71d7d3d | 2010-09-27 09:42:19 +0100 | [diff] [blame] | 412 | /* Module parameter */ |
| 413 | extern int mmc_assume_removable; |
| 414 | |
| 415 | static inline int mmc_card_is_removable(struct mmc_host *host) |
| 416 | { |
| 417 | return !(host->caps & MMC_CAP_NONREMOVABLE) && mmc_assume_removable; |
| 418 | } |
| 419 | |
Ohad Ben-Cohen | a5e9425 | 2011-04-05 17:43:20 +0300 | [diff] [blame] | 420 | static inline int mmc_card_keep_power(struct mmc_host *host) |
Ohad Ben-Cohen | 080bc97 | 2010-11-28 07:21:29 +0200 | [diff] [blame] | 421 | { |
| 422 | return host->pm_flags & MMC_PM_KEEP_POWER; |
| 423 | } |
| 424 | |
Ohad Ben-Cohen | 6b93d01f | 2011-04-05 17:43:21 +0300 | [diff] [blame] | 425 | static inline int mmc_card_wake_sdio_irq(struct mmc_host *host) |
| 426 | { |
| 427 | return host->pm_flags & MMC_PM_WAKE_SDIO_IRQ; |
| 428 | } |
Andrei Warkentin | d0c97cf | 2011-05-23 15:06:36 -0500 | [diff] [blame] | 429 | |
| 430 | static inline int mmc_host_cmd23(struct mmc_host *host) |
| 431 | { |
| 432 | return host->caps & MMC_CAP_CMD23; |
| 433 | } |
Sujit Reddy Thumma | abb9681 | 2011-12-08 14:53:14 +0530 | [diff] [blame] | 434 | |
| 435 | #ifdef CONFIG_MMC_CLKGATE |
| 436 | void mmc_host_clk_hold(struct mmc_host *host); |
| 437 | void mmc_host_clk_release(struct mmc_host *host); |
| 438 | unsigned int mmc_host_clk_rate(struct mmc_host *host); |
| 439 | |
| 440 | #else |
| 441 | static inline void mmc_host_clk_hold(struct mmc_host *host) |
| 442 | { |
| 443 | } |
| 444 | |
| 445 | static inline void mmc_host_clk_release(struct mmc_host *host) |
| 446 | { |
| 447 | } |
| 448 | |
| 449 | static inline unsigned int mmc_host_clk_rate(struct mmc_host *host) |
| 450 | { |
| 451 | return host->ios.clock; |
| 452 | } |
| 453 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | #endif |
| 455 | |