Thomas Gleixner | d2912cb | 2019-06-04 10:11:33 +0200 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-only |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 2 | /* |
Pierre Ossman | 70f1048 | 2007-07-11 20:04:50 +0200 | [diff] [blame] | 3 | * linux/drivers/mmc/host/omap.c |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 4 | * |
| 5 | * Copyright (C) 2004 Nokia Corporation |
Al Viro | d36b691 | 2011-12-29 17:09:01 -0500 | [diff] [blame] | 6 | * Written by Tuukka Tikkanen and Juha Yrjölä<juha.yrjola@nokia.com> |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 7 | * Misc hacks here and there by Tony Lindgren <tony@atomide.com> |
| 8 | * Other hacks (DMA, SD, etc) by David Brownell |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 9 | */ |
| 10 | |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 11 | #include <linux/module.h> |
| 12 | #include <linux/moduleparam.h> |
| 13 | #include <linux/init.h> |
| 14 | #include <linux/ioport.h> |
| 15 | #include <linux/platform_device.h> |
| 16 | #include <linux/interrupt.h> |
Russell King | 3451c06 | 2012-04-21 22:35:42 +0100 | [diff] [blame] | 17 | #include <linux/dmaengine.h> |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 18 | #include <linux/dma-mapping.h> |
| 19 | #include <linux/delay.h> |
| 20 | #include <linux/spinlock.h> |
| 21 | #include <linux/timer.h> |
Tony Lindgren | 9cb238c | 2013-11-26 15:50:33 -0800 | [diff] [blame] | 22 | #include <linux/of.h> |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 23 | #include <linux/mmc/host.h> |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 24 | #include <linux/mmc/card.h> |
Jarkko Nikula | b13d1f0 | 2014-02-22 18:01:43 +0200 | [diff] [blame] | 25 | #include <linux/mmc/mmc.h> |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 26 | #include <linux/clk.h> |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 27 | #include <linux/scatterlist.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 28 | #include <linux/slab.h> |
Tony Lindgren | 68f39e7 | 2012-10-15 12:09:43 -0700 | [diff] [blame] | 29 | #include <linux/platform_data/mmc-omap.h> |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 30 | |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 31 | |
Juha Yrjola juha.yrjola | 0551f4d | 2006-11-11 23:38:36 +0100 | [diff] [blame] | 32 | #define OMAP_MMC_REG_CMD 0x00 |
Marek Belisko | 0e950fa6 | 2010-05-26 14:41:49 -0700 | [diff] [blame] | 33 | #define OMAP_MMC_REG_ARGL 0x01 |
| 34 | #define OMAP_MMC_REG_ARGH 0x02 |
| 35 | #define OMAP_MMC_REG_CON 0x03 |
| 36 | #define OMAP_MMC_REG_STAT 0x04 |
| 37 | #define OMAP_MMC_REG_IE 0x05 |
| 38 | #define OMAP_MMC_REG_CTO 0x06 |
| 39 | #define OMAP_MMC_REG_DTO 0x07 |
| 40 | #define OMAP_MMC_REG_DATA 0x08 |
| 41 | #define OMAP_MMC_REG_BLEN 0x09 |
| 42 | #define OMAP_MMC_REG_NBLK 0x0a |
| 43 | #define OMAP_MMC_REG_BUF 0x0b |
| 44 | #define OMAP_MMC_REG_SDIO 0x0d |
| 45 | #define OMAP_MMC_REG_REV 0x0f |
| 46 | #define OMAP_MMC_REG_RSP0 0x10 |
| 47 | #define OMAP_MMC_REG_RSP1 0x11 |
| 48 | #define OMAP_MMC_REG_RSP2 0x12 |
| 49 | #define OMAP_MMC_REG_RSP3 0x13 |
| 50 | #define OMAP_MMC_REG_RSP4 0x14 |
| 51 | #define OMAP_MMC_REG_RSP5 0x15 |
| 52 | #define OMAP_MMC_REG_RSP6 0x16 |
| 53 | #define OMAP_MMC_REG_RSP7 0x17 |
| 54 | #define OMAP_MMC_REG_IOSR 0x18 |
| 55 | #define OMAP_MMC_REG_SYSC 0x19 |
| 56 | #define OMAP_MMC_REG_SYSS 0x1a |
Juha Yrjola juha.yrjola | 0551f4d | 2006-11-11 23:38:36 +0100 | [diff] [blame] | 57 | |
| 58 | #define OMAP_MMC_STAT_CARD_ERR (1 << 14) |
| 59 | #define OMAP_MMC_STAT_CARD_IRQ (1 << 13) |
| 60 | #define OMAP_MMC_STAT_OCR_BUSY (1 << 12) |
| 61 | #define OMAP_MMC_STAT_A_EMPTY (1 << 11) |
| 62 | #define OMAP_MMC_STAT_A_FULL (1 << 10) |
| 63 | #define OMAP_MMC_STAT_CMD_CRC (1 << 8) |
| 64 | #define OMAP_MMC_STAT_CMD_TOUT (1 << 7) |
| 65 | #define OMAP_MMC_STAT_DATA_CRC (1 << 6) |
| 66 | #define OMAP_MMC_STAT_DATA_TOUT (1 << 5) |
| 67 | #define OMAP_MMC_STAT_END_BUSY (1 << 4) |
| 68 | #define OMAP_MMC_STAT_END_OF_DATA (1 << 3) |
| 69 | #define OMAP_MMC_STAT_CARD_BUSY (1 << 2) |
| 70 | #define OMAP_MMC_STAT_END_OF_CMD (1 << 0) |
| 71 | |
Tony Lindgren | 53db20d | 2012-10-15 12:10:33 -0700 | [diff] [blame] | 72 | #define mmc_omap7xx() (host->features & MMC_OMAP7XX) |
| 73 | #define mmc_omap15xx() (host->features & MMC_OMAP15XX) |
| 74 | #define mmc_omap16xx() (host->features & MMC_OMAP16XX) |
| 75 | #define MMC_OMAP1_MASK (MMC_OMAP7XX | MMC_OMAP15XX | MMC_OMAP16XX) |
| 76 | #define mmc_omap1() (host->features & MMC_OMAP1_MASK) |
| 77 | #define mmc_omap2() (!mmc_omap1()) |
| 78 | |
Marek Belisko | 0e950fa6 | 2010-05-26 14:41:49 -0700 | [diff] [blame] | 79 | #define OMAP_MMC_REG(host, reg) (OMAP_MMC_REG_##reg << (host)->reg_shift) |
| 80 | #define OMAP_MMC_READ(host, reg) __raw_readw((host)->virt_base + OMAP_MMC_REG(host, reg)) |
| 81 | #define OMAP_MMC_WRITE(host, reg, val) __raw_writew((val), (host)->virt_base + OMAP_MMC_REG(host, reg)) |
Juha Yrjola juha.yrjola | 0551f4d | 2006-11-11 23:38:36 +0100 | [diff] [blame] | 82 | |
| 83 | /* |
| 84 | * Command types |
| 85 | */ |
| 86 | #define OMAP_MMC_CMDTYPE_BC 0 |
| 87 | #define OMAP_MMC_CMDTYPE_BCR 1 |
| 88 | #define OMAP_MMC_CMDTYPE_AC 2 |
| 89 | #define OMAP_MMC_CMDTYPE_ADTC 3 |
| 90 | |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 91 | #define DRIVER_NAME "mmci-omap" |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 92 | |
| 93 | /* Specifies how often in millisecs to poll for card status changes |
| 94 | * when the cover switch is open */ |
Jarkko Lavinen | 7584d27 | 2008-03-26 16:09:42 -0400 | [diff] [blame] | 95 | #define OMAP_MMC_COVER_POLL_DELAY 500 |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 96 | |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 97 | struct mmc_omap_host; |
| 98 | |
| 99 | struct mmc_omap_slot { |
| 100 | int id; |
| 101 | unsigned int vdd; |
| 102 | u16 saved_con; |
| 103 | u16 bus_mode; |
Aaro Koskinen | e8cde62 | 2018-11-20 01:14:00 +0200 | [diff] [blame] | 104 | u16 power_mode; |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 105 | unsigned int fclk_freq; |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 106 | |
Jarkko Lavinen | 7584d27 | 2008-03-26 16:09:42 -0400 | [diff] [blame] | 107 | struct tasklet_struct cover_tasklet; |
| 108 | struct timer_list cover_timer; |
Juha Yrjola | 5a0f3f1 | 2008-03-26 16:09:08 -0400 | [diff] [blame] | 109 | unsigned cover_open; |
| 110 | |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 111 | struct mmc_request *mrq; |
| 112 | struct mmc_omap_host *host; |
| 113 | struct mmc_host *mmc; |
| 114 | struct omap_mmc_slot_data *pdata; |
| 115 | }; |
| 116 | |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 117 | struct mmc_omap_host { |
| 118 | int initialized; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 119 | struct mmc_request * mrq; |
| 120 | struct mmc_command * cmd; |
| 121 | struct mmc_data * data; |
| 122 | struct mmc_host * mmc; |
| 123 | struct device * dev; |
| 124 | unsigned char id; /* 16xx chips have 2 MMC blocks */ |
| 125 | struct clk * iclk; |
| 126 | struct clk * fclk; |
Russell King | 3451c06 | 2012-04-21 22:35:42 +0100 | [diff] [blame] | 127 | struct dma_chan *dma_rx; |
| 128 | u32 dma_rx_burst; |
| 129 | struct dma_chan *dma_tx; |
| 130 | u32 dma_tx_burst; |
Juha Yrjola juha.yrjola | 89783b1e4 | 2006-11-11 23:36:01 +0100 | [diff] [blame] | 131 | void __iomem *virt_base; |
| 132 | unsigned int phys_base; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 133 | int irq; |
| 134 | unsigned char bus_mode; |
Marek Belisko | 0e950fa6 | 2010-05-26 14:41:49 -0700 | [diff] [blame] | 135 | unsigned int reg_shift; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 136 | |
Jarkko Lavinen | 0fb4723 | 2008-03-26 16:09:48 -0400 | [diff] [blame] | 137 | struct work_struct cmd_abort_work; |
| 138 | unsigned abort:1; |
| 139 | struct timer_list cmd_abort_timer; |
Jarkko Lavinen | eb1860b | 2008-03-26 16:09:29 -0400 | [diff] [blame] | 140 | |
Jarkko Lavinen | 0f602ec | 2008-03-26 16:09:58 -0400 | [diff] [blame] | 141 | struct work_struct slot_release_work; |
| 142 | struct mmc_omap_slot *next_slot; |
| 143 | struct work_struct send_stop_work; |
| 144 | struct mmc_data *stop_data; |
| 145 | |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 146 | unsigned int sg_len; |
| 147 | int sg_idx; |
| 148 | u16 * buffer; |
| 149 | u32 buffer_bytes_left; |
| 150 | u32 total_bytes_left; |
| 151 | |
Tony Lindgren | 53db20d | 2012-10-15 12:10:33 -0700 | [diff] [blame] | 152 | unsigned features; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 153 | unsigned brs_received:1, dma_done:1; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 154 | unsigned dma_in_use:1; |
Russell King | 3451c06 | 2012-04-21 22:35:42 +0100 | [diff] [blame] | 155 | spinlock_t dma_lock; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 156 | |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 157 | struct mmc_omap_slot *slots[OMAP_MMC_MAX_SLOTS]; |
| 158 | struct mmc_omap_slot *current_slot; |
| 159 | spinlock_t slot_lock; |
| 160 | wait_queue_head_t slot_wq; |
| 161 | int nr_slots; |
| 162 | |
Jarkko Lavinen | 0807a9b | 2008-03-26 16:09:52 -0400 | [diff] [blame] | 163 | struct timer_list clk_timer; |
| 164 | spinlock_t clk_lock; /* for changing enabled state */ |
| 165 | unsigned int fclk_enabled:1; |
Venkatraman S | b01a4f1 | 2012-05-08 17:05:33 +0530 | [diff] [blame] | 166 | struct workqueue_struct *mmc_omap_wq; |
Jarkko Lavinen | 0807a9b | 2008-03-26 16:09:52 -0400 | [diff] [blame] | 167 | |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 168 | struct omap_mmc_platform_data *pdata; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 169 | }; |
| 170 | |
Tejun Heo | 0d9ee5b | 2010-12-24 16:00:17 +0100 | [diff] [blame] | 171 | |
Russell King | 7c8ad98 | 2008-09-05 15:13:24 +0100 | [diff] [blame] | 172 | static void mmc_omap_fclk_offdelay(struct mmc_omap_slot *slot) |
Jarkko Lavinen | 0807a9b | 2008-03-26 16:09:52 -0400 | [diff] [blame] | 173 | { |
| 174 | unsigned long tick_ns; |
| 175 | |
| 176 | if (slot != NULL && slot->host->fclk_enabled && slot->fclk_freq > 0) { |
Axel Lin | 03a1685 | 2014-05-03 09:07:42 +0800 | [diff] [blame] | 177 | tick_ns = DIV_ROUND_UP(NSEC_PER_SEC, slot->fclk_freq); |
Jarkko Lavinen | 0807a9b | 2008-03-26 16:09:52 -0400 | [diff] [blame] | 178 | ndelay(8 * tick_ns); |
| 179 | } |
| 180 | } |
| 181 | |
Russell King | 7c8ad98 | 2008-09-05 15:13:24 +0100 | [diff] [blame] | 182 | static void mmc_omap_fclk_enable(struct mmc_omap_host *host, unsigned int enable) |
Jarkko Lavinen | 0807a9b | 2008-03-26 16:09:52 -0400 | [diff] [blame] | 183 | { |
| 184 | unsigned long flags; |
| 185 | |
| 186 | spin_lock_irqsave(&host->clk_lock, flags); |
| 187 | if (host->fclk_enabled != enable) { |
| 188 | host->fclk_enabled = enable; |
| 189 | if (enable) |
| 190 | clk_enable(host->fclk); |
| 191 | else |
| 192 | clk_disable(host->fclk); |
| 193 | } |
| 194 | spin_unlock_irqrestore(&host->clk_lock, flags); |
| 195 | } |
| 196 | |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 197 | static void mmc_omap_select_slot(struct mmc_omap_slot *slot, int claimed) |
| 198 | { |
| 199 | struct mmc_omap_host *host = slot->host; |
| 200 | unsigned long flags; |
| 201 | |
| 202 | if (claimed) |
| 203 | goto no_claim; |
| 204 | spin_lock_irqsave(&host->slot_lock, flags); |
| 205 | while (host->mmc != NULL) { |
| 206 | spin_unlock_irqrestore(&host->slot_lock, flags); |
| 207 | wait_event(host->slot_wq, host->mmc == NULL); |
| 208 | spin_lock_irqsave(&host->slot_lock, flags); |
| 209 | } |
| 210 | host->mmc = slot->mmc; |
| 211 | spin_unlock_irqrestore(&host->slot_lock, flags); |
| 212 | no_claim: |
Jarkko Lavinen | 0807a9b | 2008-03-26 16:09:52 -0400 | [diff] [blame] | 213 | del_timer(&host->clk_timer); |
| 214 | if (host->current_slot != slot || !claimed) |
| 215 | mmc_omap_fclk_offdelay(host->current_slot); |
| 216 | |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 217 | if (host->current_slot != slot) { |
Jarkko Lavinen | 0807a9b | 2008-03-26 16:09:52 -0400 | [diff] [blame] | 218 | OMAP_MMC_WRITE(host, CON, slot->saved_con & 0xFC00); |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 219 | if (host->pdata->switch_slot != NULL) |
| 220 | host->pdata->switch_slot(mmc_dev(slot->mmc), slot->id); |
| 221 | host->current_slot = slot; |
| 222 | } |
| 223 | |
Jarkko Lavinen | 0807a9b | 2008-03-26 16:09:52 -0400 | [diff] [blame] | 224 | if (claimed) { |
| 225 | mmc_omap_fclk_enable(host, 1); |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 226 | |
Jarkko Lavinen | 0807a9b | 2008-03-26 16:09:52 -0400 | [diff] [blame] | 227 | /* Doing the dummy read here seems to work around some bug |
| 228 | * at least in OMAP24xx silicon where the command would not |
| 229 | * start after writing the CMD register. Sigh. */ |
| 230 | OMAP_MMC_READ(host, CON); |
| 231 | |
| 232 | OMAP_MMC_WRITE(host, CON, slot->saved_con); |
| 233 | } else |
| 234 | mmc_omap_fclk_enable(host, 0); |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 235 | } |
| 236 | |
| 237 | static void mmc_omap_start_request(struct mmc_omap_host *host, |
| 238 | struct mmc_request *req); |
| 239 | |
Jarkko Lavinen | 0f602ec | 2008-03-26 16:09:58 -0400 | [diff] [blame] | 240 | static void mmc_omap_slot_release_work(struct work_struct *work) |
| 241 | { |
| 242 | struct mmc_omap_host *host = container_of(work, struct mmc_omap_host, |
| 243 | slot_release_work); |
| 244 | struct mmc_omap_slot *next_slot = host->next_slot; |
| 245 | struct mmc_request *rq; |
| 246 | |
| 247 | host->next_slot = NULL; |
| 248 | mmc_omap_select_slot(next_slot, 1); |
| 249 | |
| 250 | rq = next_slot->mrq; |
| 251 | next_slot->mrq = NULL; |
| 252 | mmc_omap_start_request(host, rq); |
| 253 | } |
| 254 | |
Jarkko Lavinen | 0807a9b | 2008-03-26 16:09:52 -0400 | [diff] [blame] | 255 | static void mmc_omap_release_slot(struct mmc_omap_slot *slot, int clk_enabled) |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 256 | { |
| 257 | struct mmc_omap_host *host = slot->host; |
| 258 | unsigned long flags; |
| 259 | int i; |
| 260 | |
| 261 | BUG_ON(slot == NULL || host->mmc == NULL); |
Jarkko Lavinen | 0807a9b | 2008-03-26 16:09:52 -0400 | [diff] [blame] | 262 | |
| 263 | if (clk_enabled) |
| 264 | /* Keeps clock running for at least 8 cycles on valid freq */ |
| 265 | mod_timer(&host->clk_timer, jiffies + HZ/10); |
| 266 | else { |
| 267 | del_timer(&host->clk_timer); |
| 268 | mmc_omap_fclk_offdelay(slot); |
| 269 | mmc_omap_fclk_enable(host, 0); |
| 270 | } |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 271 | |
| 272 | spin_lock_irqsave(&host->slot_lock, flags); |
| 273 | /* Check for any pending requests */ |
| 274 | for (i = 0; i < host->nr_slots; i++) { |
| 275 | struct mmc_omap_slot *new_slot; |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 276 | |
| 277 | if (host->slots[i] == NULL || host->slots[i]->mrq == NULL) |
| 278 | continue; |
| 279 | |
Jarkko Lavinen | 0f602ec | 2008-03-26 16:09:58 -0400 | [diff] [blame] | 280 | BUG_ON(host->next_slot != NULL); |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 281 | new_slot = host->slots[i]; |
| 282 | /* The current slot should not have a request in queue */ |
| 283 | BUG_ON(new_slot == host->current_slot); |
| 284 | |
Jarkko Lavinen | 0f602ec | 2008-03-26 16:09:58 -0400 | [diff] [blame] | 285 | host->next_slot = new_slot; |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 286 | host->mmc = new_slot->mmc; |
| 287 | spin_unlock_irqrestore(&host->slot_lock, flags); |
Venkatraman S | b01a4f1 | 2012-05-08 17:05:33 +0530 | [diff] [blame] | 288 | queue_work(host->mmc_omap_wq, &host->slot_release_work); |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 289 | return; |
| 290 | } |
| 291 | |
| 292 | host->mmc = NULL; |
| 293 | wake_up(&host->slot_wq); |
| 294 | spin_unlock_irqrestore(&host->slot_lock, flags); |
| 295 | } |
| 296 | |
Juha Yrjola | 5a0f3f1 | 2008-03-26 16:09:08 -0400 | [diff] [blame] | 297 | static inline |
| 298 | int mmc_omap_cover_is_open(struct mmc_omap_slot *slot) |
| 299 | { |
Kyungmin Park | 8348f00 | 2008-03-26 16:09:38 -0400 | [diff] [blame] | 300 | if (slot->pdata->get_cover_state) |
| 301 | return slot->pdata->get_cover_state(mmc_dev(slot->mmc), |
| 302 | slot->id); |
| 303 | return 0; |
Juha Yrjola | 5a0f3f1 | 2008-03-26 16:09:08 -0400 | [diff] [blame] | 304 | } |
| 305 | |
| 306 | static ssize_t |
| 307 | mmc_omap_show_cover_switch(struct device *dev, struct device_attribute *attr, |
| 308 | char *buf) |
| 309 | { |
| 310 | struct mmc_host *mmc = container_of(dev, struct mmc_host, class_dev); |
| 311 | struct mmc_omap_slot *slot = mmc_priv(mmc); |
| 312 | |
| 313 | return sprintf(buf, "%s\n", mmc_omap_cover_is_open(slot) ? "open" : |
| 314 | "closed"); |
| 315 | } |
| 316 | |
| 317 | static DEVICE_ATTR(cover_switch, S_IRUGO, mmc_omap_show_cover_switch, NULL); |
| 318 | |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 319 | static ssize_t |
| 320 | mmc_omap_show_slot_name(struct device *dev, struct device_attribute *attr, |
| 321 | char *buf) |
| 322 | { |
| 323 | struct mmc_host *mmc = container_of(dev, struct mmc_host, class_dev); |
| 324 | struct mmc_omap_slot *slot = mmc_priv(mmc); |
| 325 | |
| 326 | return sprintf(buf, "%s\n", slot->pdata->name); |
| 327 | } |
| 328 | |
| 329 | static DEVICE_ATTR(slot_name, S_IRUGO, mmc_omap_show_slot_name, NULL); |
| 330 | |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 331 | static void |
| 332 | mmc_omap_start_command(struct mmc_omap_host *host, struct mmc_command *cmd) |
| 333 | { |
| 334 | u32 cmdreg; |
| 335 | u32 resptype; |
| 336 | u32 cmdtype; |
Jarkko Nikula | b13d1f0 | 2014-02-22 18:01:43 +0200 | [diff] [blame] | 337 | u16 irq_mask; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 338 | |
| 339 | host->cmd = cmd; |
| 340 | |
| 341 | resptype = 0; |
| 342 | cmdtype = 0; |
| 343 | |
| 344 | /* Our hardware needs to know exact type */ |
Carlos Eduardo Aguiar | 1b3b263 | 2007-01-15 06:38:15 +0100 | [diff] [blame] | 345 | switch (mmc_resp_type(cmd)) { |
| 346 | case MMC_RSP_NONE: |
| 347 | break; |
| 348 | case MMC_RSP_R1: |
| 349 | case MMC_RSP_R1B: |
Philip Langdale | 6f94990 | 2007-01-04 07:04:47 -0800 | [diff] [blame] | 350 | /* resp 1, 1b, 6, 7 */ |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 351 | resptype = 1; |
| 352 | break; |
Carlos Eduardo Aguiar | 1b3b263 | 2007-01-15 06:38:15 +0100 | [diff] [blame] | 353 | case MMC_RSP_R2: |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 354 | resptype = 2; |
| 355 | break; |
Carlos Eduardo Aguiar | 1b3b263 | 2007-01-15 06:38:15 +0100 | [diff] [blame] | 356 | case MMC_RSP_R3: |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 357 | resptype = 3; |
| 358 | break; |
| 359 | default: |
Carlos Eduardo Aguiar | 1b3b263 | 2007-01-15 06:38:15 +0100 | [diff] [blame] | 360 | dev_err(mmc_dev(host->mmc), "Invalid response type: %04x\n", mmc_resp_type(cmd)); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 361 | break; |
| 362 | } |
| 363 | |
| 364 | if (mmc_cmd_type(cmd) == MMC_CMD_ADTC) { |
| 365 | cmdtype = OMAP_MMC_CMDTYPE_ADTC; |
| 366 | } else if (mmc_cmd_type(cmd) == MMC_CMD_BC) { |
| 367 | cmdtype = OMAP_MMC_CMDTYPE_BC; |
| 368 | } else if (mmc_cmd_type(cmd) == MMC_CMD_BCR) { |
| 369 | cmdtype = OMAP_MMC_CMDTYPE_BCR; |
| 370 | } else { |
| 371 | cmdtype = OMAP_MMC_CMDTYPE_AC; |
| 372 | } |
| 373 | |
| 374 | cmdreg = cmd->opcode | (resptype << 8) | (cmdtype << 12); |
| 375 | |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 376 | if (host->current_slot->bus_mode == MMC_BUSMODE_OPENDRAIN) |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 377 | cmdreg |= 1 << 6; |
| 378 | |
| 379 | if (cmd->flags & MMC_RSP_BUSY) |
| 380 | cmdreg |= 1 << 11; |
| 381 | |
| 382 | if (host->data && !(host->data->flags & MMC_DATA_WRITE)) |
| 383 | cmdreg |= 1 << 15; |
| 384 | |
Jarkko Lavinen | 0fb4723 | 2008-03-26 16:09:48 -0400 | [diff] [blame] | 385 | mod_timer(&host->cmd_abort_timer, jiffies + HZ/2); |
Jarkko Lavinen | eb1860b | 2008-03-26 16:09:29 -0400 | [diff] [blame] | 386 | |
Juha Yrjola juha.yrjola | 3342ee8 | 2006-11-11 23:36:52 +0100 | [diff] [blame] | 387 | OMAP_MMC_WRITE(host, CTO, 200); |
| 388 | OMAP_MMC_WRITE(host, ARGL, cmd->arg & 0xffff); |
| 389 | OMAP_MMC_WRITE(host, ARGH, cmd->arg >> 16); |
Jarkko Nikula | b13d1f0 | 2014-02-22 18:01:43 +0200 | [diff] [blame] | 390 | irq_mask = OMAP_MMC_STAT_A_EMPTY | OMAP_MMC_STAT_A_FULL | |
| 391 | OMAP_MMC_STAT_CMD_CRC | OMAP_MMC_STAT_CMD_TOUT | |
| 392 | OMAP_MMC_STAT_DATA_CRC | OMAP_MMC_STAT_DATA_TOUT | |
| 393 | OMAP_MMC_STAT_END_OF_CMD | OMAP_MMC_STAT_CARD_ERR | |
| 394 | OMAP_MMC_STAT_END_OF_DATA; |
| 395 | if (cmd->opcode == MMC_ERASE) |
| 396 | irq_mask &= ~OMAP_MMC_STAT_DATA_TOUT; |
| 397 | OMAP_MMC_WRITE(host, IE, irq_mask); |
Juha Yrjola juha.yrjola | 3342ee8 | 2006-11-11 23:36:52 +0100 | [diff] [blame] | 398 | OMAP_MMC_WRITE(host, CMD, cmdreg); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 399 | } |
| 400 | |
| 401 | static void |
Juha Yrjola | a914ded | 2008-03-26 16:09:12 -0400 | [diff] [blame] | 402 | mmc_omap_release_dma(struct mmc_omap_host *host, struct mmc_data *data, |
| 403 | int abort) |
| 404 | { |
| 405 | enum dma_data_direction dma_data_dir; |
Russell King | 3451c06 | 2012-04-21 22:35:42 +0100 | [diff] [blame] | 406 | struct device *dev = mmc_dev(host->mmc); |
| 407 | struct dma_chan *c; |
Juha Yrjola | a914ded | 2008-03-26 16:09:12 -0400 | [diff] [blame] | 408 | |
Russell King | 3451c06 | 2012-04-21 22:35:42 +0100 | [diff] [blame] | 409 | if (data->flags & MMC_DATA_WRITE) { |
Juha Yrjola | a914ded | 2008-03-26 16:09:12 -0400 | [diff] [blame] | 410 | dma_data_dir = DMA_TO_DEVICE; |
Russell King | 3451c06 | 2012-04-21 22:35:42 +0100 | [diff] [blame] | 411 | c = host->dma_tx; |
| 412 | } else { |
Juha Yrjola | a914ded | 2008-03-26 16:09:12 -0400 | [diff] [blame] | 413 | dma_data_dir = DMA_FROM_DEVICE; |
Russell King | 3451c06 | 2012-04-21 22:35:42 +0100 | [diff] [blame] | 414 | c = host->dma_rx; |
| 415 | } |
| 416 | if (c) { |
| 417 | if (data->error) { |
| 418 | dmaengine_terminate_all(c); |
| 419 | /* Claim nothing transferred on error... */ |
| 420 | data->bytes_xfered = 0; |
| 421 | } |
| 422 | dev = c->device->dev; |
| 423 | } |
| 424 | dma_unmap_sg(dev, data->sg, host->sg_len, dma_data_dir); |
Juha Yrjola | a914ded | 2008-03-26 16:09:12 -0400 | [diff] [blame] | 425 | } |
| 426 | |
Jarkko Lavinen | 0f602ec | 2008-03-26 16:09:58 -0400 | [diff] [blame] | 427 | static void mmc_omap_send_stop_work(struct work_struct *work) |
| 428 | { |
| 429 | struct mmc_omap_host *host = container_of(work, struct mmc_omap_host, |
| 430 | send_stop_work); |
| 431 | struct mmc_omap_slot *slot = host->current_slot; |
| 432 | struct mmc_data *data = host->stop_data; |
| 433 | unsigned long tick_ns; |
| 434 | |
Axel Lin | 03a1685 | 2014-05-03 09:07:42 +0800 | [diff] [blame] | 435 | tick_ns = DIV_ROUND_UP(NSEC_PER_SEC, slot->fclk_freq); |
Jarkko Lavinen | 0f602ec | 2008-03-26 16:09:58 -0400 | [diff] [blame] | 436 | ndelay(8*tick_ns); |
| 437 | |
| 438 | mmc_omap_start_command(host, data->stop); |
| 439 | } |
| 440 | |
Juha Yrjola | a914ded | 2008-03-26 16:09:12 -0400 | [diff] [blame] | 441 | static void |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 442 | mmc_omap_xfer_done(struct mmc_omap_host *host, struct mmc_data *data) |
| 443 | { |
Juha Yrjola | a914ded | 2008-03-26 16:09:12 -0400 | [diff] [blame] | 444 | if (host->dma_in_use) |
| 445 | mmc_omap_release_dma(host, data, data->error); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 446 | |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 447 | host->data = NULL; |
| 448 | host->sg_len = 0; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 449 | |
| 450 | /* NOTE: MMC layer will sometimes poll-wait CMD13 next, issuing |
| 451 | * dozens of requests until the card finishes writing data. |
| 452 | * It'd be cheaper to just wait till an EOFB interrupt arrives... |
| 453 | */ |
| 454 | |
| 455 | if (!data->stop) { |
Juha Yrjola | a914ded | 2008-03-26 16:09:12 -0400 | [diff] [blame] | 456 | struct mmc_host *mmc; |
| 457 | |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 458 | host->mrq = NULL; |
Juha Yrjola | a914ded | 2008-03-26 16:09:12 -0400 | [diff] [blame] | 459 | mmc = host->mmc; |
Jarkko Lavinen | 0807a9b | 2008-03-26 16:09:52 -0400 | [diff] [blame] | 460 | mmc_omap_release_slot(host->current_slot, 1); |
Juha Yrjola | a914ded | 2008-03-26 16:09:12 -0400 | [diff] [blame] | 461 | mmc_request_done(mmc, data->mrq); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 462 | return; |
| 463 | } |
| 464 | |
Jarkko Lavinen | 0f602ec | 2008-03-26 16:09:58 -0400 | [diff] [blame] | 465 | host->stop_data = data; |
Venkatraman S | b01a4f1 | 2012-05-08 17:05:33 +0530 | [diff] [blame] | 466 | queue_work(host->mmc_omap_wq, &host->send_stop_work); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 467 | } |
| 468 | |
| 469 | static void |
Jarkko Lavinen | 0fb4723 | 2008-03-26 16:09:48 -0400 | [diff] [blame] | 470 | mmc_omap_send_abort(struct mmc_omap_host *host, int maxloops) |
Jarkko Lavinen | eb1860b | 2008-03-26 16:09:29 -0400 | [diff] [blame] | 471 | { |
| 472 | struct mmc_omap_slot *slot = host->current_slot; |
| 473 | unsigned int restarts, passes, timeout; |
| 474 | u16 stat = 0; |
| 475 | |
| 476 | /* Sending abort takes 80 clocks. Have some extra and round up */ |
Axel Lin | 03a1685 | 2014-05-03 09:07:42 +0800 | [diff] [blame] | 477 | timeout = DIV_ROUND_UP(120 * USEC_PER_SEC, slot->fclk_freq); |
Jarkko Lavinen | eb1860b | 2008-03-26 16:09:29 -0400 | [diff] [blame] | 478 | restarts = 0; |
Jarkko Lavinen | 0fb4723 | 2008-03-26 16:09:48 -0400 | [diff] [blame] | 479 | while (restarts < maxloops) { |
Jarkko Lavinen | eb1860b | 2008-03-26 16:09:29 -0400 | [diff] [blame] | 480 | OMAP_MMC_WRITE(host, STAT, 0xFFFF); |
| 481 | OMAP_MMC_WRITE(host, CMD, (3 << 12) | (1 << 7)); |
| 482 | |
| 483 | passes = 0; |
| 484 | while (passes < timeout) { |
| 485 | stat = OMAP_MMC_READ(host, STAT); |
| 486 | if (stat & OMAP_MMC_STAT_END_OF_CMD) |
| 487 | goto out; |
| 488 | udelay(1); |
| 489 | passes++; |
| 490 | } |
| 491 | |
| 492 | restarts++; |
| 493 | } |
| 494 | out: |
| 495 | OMAP_MMC_WRITE(host, STAT, stat); |
| 496 | } |
| 497 | |
| 498 | static void |
Juha Yrjola | a914ded | 2008-03-26 16:09:12 -0400 | [diff] [blame] | 499 | mmc_omap_abort_xfer(struct mmc_omap_host *host, struct mmc_data *data) |
| 500 | { |
Juha Yrjola | a914ded | 2008-03-26 16:09:12 -0400 | [diff] [blame] | 501 | if (host->dma_in_use) |
| 502 | mmc_omap_release_dma(host, data, 1); |
| 503 | |
| 504 | host->data = NULL; |
| 505 | host->sg_len = 0; |
| 506 | |
Jarkko Lavinen | 0fb4723 | 2008-03-26 16:09:48 -0400 | [diff] [blame] | 507 | mmc_omap_send_abort(host, 10000); |
Juha Yrjola | a914ded | 2008-03-26 16:09:12 -0400 | [diff] [blame] | 508 | } |
| 509 | |
| 510 | static void |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 511 | mmc_omap_end_of_data(struct mmc_omap_host *host, struct mmc_data *data) |
| 512 | { |
| 513 | unsigned long flags; |
| 514 | int done; |
| 515 | |
| 516 | if (!host->dma_in_use) { |
| 517 | mmc_omap_xfer_done(host, data); |
| 518 | return; |
| 519 | } |
| 520 | done = 0; |
| 521 | spin_lock_irqsave(&host->dma_lock, flags); |
| 522 | if (host->dma_done) |
| 523 | done = 1; |
| 524 | else |
| 525 | host->brs_received = 1; |
| 526 | spin_unlock_irqrestore(&host->dma_lock, flags); |
| 527 | if (done) |
| 528 | mmc_omap_xfer_done(host, data); |
| 529 | } |
| 530 | |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 531 | static void |
| 532 | mmc_omap_dma_done(struct mmc_omap_host *host, struct mmc_data *data) |
| 533 | { |
| 534 | unsigned long flags; |
| 535 | int done; |
| 536 | |
| 537 | done = 0; |
| 538 | spin_lock_irqsave(&host->dma_lock, flags); |
| 539 | if (host->brs_received) |
| 540 | done = 1; |
| 541 | else |
| 542 | host->dma_done = 1; |
| 543 | spin_unlock_irqrestore(&host->dma_lock, flags); |
| 544 | if (done) |
| 545 | mmc_omap_xfer_done(host, data); |
| 546 | } |
| 547 | |
| 548 | static void |
| 549 | mmc_omap_cmd_done(struct mmc_omap_host *host, struct mmc_command *cmd) |
| 550 | { |
| 551 | host->cmd = NULL; |
| 552 | |
Jarkko Lavinen | 0fb4723 | 2008-03-26 16:09:48 -0400 | [diff] [blame] | 553 | del_timer(&host->cmd_abort_timer); |
Jarkko Lavinen | eb1860b | 2008-03-26 16:09:29 -0400 | [diff] [blame] | 554 | |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 555 | if (cmd->flags & MMC_RSP_PRESENT) { |
| 556 | if (cmd->flags & MMC_RSP_136) { |
| 557 | /* response type 2 */ |
| 558 | cmd->resp[3] = |
Juha Yrjola juha.yrjola | 3342ee8 | 2006-11-11 23:36:52 +0100 | [diff] [blame] | 559 | OMAP_MMC_READ(host, RSP0) | |
| 560 | (OMAP_MMC_READ(host, RSP1) << 16); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 561 | cmd->resp[2] = |
Juha Yrjola juha.yrjola | 3342ee8 | 2006-11-11 23:36:52 +0100 | [diff] [blame] | 562 | OMAP_MMC_READ(host, RSP2) | |
| 563 | (OMAP_MMC_READ(host, RSP3) << 16); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 564 | cmd->resp[1] = |
Juha Yrjola juha.yrjola | 3342ee8 | 2006-11-11 23:36:52 +0100 | [diff] [blame] | 565 | OMAP_MMC_READ(host, RSP4) | |
| 566 | (OMAP_MMC_READ(host, RSP5) << 16); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 567 | cmd->resp[0] = |
Juha Yrjola juha.yrjola | 3342ee8 | 2006-11-11 23:36:52 +0100 | [diff] [blame] | 568 | OMAP_MMC_READ(host, RSP6) | |
| 569 | (OMAP_MMC_READ(host, RSP7) << 16); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 570 | } else { |
| 571 | /* response types 1, 1b, 3, 4, 5, 6 */ |
| 572 | cmd->resp[0] = |
Juha Yrjola juha.yrjola | 3342ee8 | 2006-11-11 23:36:52 +0100 | [diff] [blame] | 573 | OMAP_MMC_READ(host, RSP6) | |
| 574 | (OMAP_MMC_READ(host, RSP7) << 16); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 575 | } |
| 576 | } |
| 577 | |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 578 | if (host->data == NULL || cmd->error) { |
Juha Yrjola | a914ded | 2008-03-26 16:09:12 -0400 | [diff] [blame] | 579 | struct mmc_host *mmc; |
| 580 | |
| 581 | if (host->data != NULL) |
| 582 | mmc_omap_abort_xfer(host, host->data); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 583 | host->mrq = NULL; |
Juha Yrjola | a914ded | 2008-03-26 16:09:12 -0400 | [diff] [blame] | 584 | mmc = host->mmc; |
Jarkko Lavinen | 0807a9b | 2008-03-26 16:09:52 -0400 | [diff] [blame] | 585 | mmc_omap_release_slot(host->current_slot, 1); |
Juha Yrjola | a914ded | 2008-03-26 16:09:12 -0400 | [diff] [blame] | 586 | mmc_request_done(mmc, cmd->mrq); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 587 | } |
| 588 | } |
| 589 | |
Jarkko Lavinen | eb1860b | 2008-03-26 16:09:29 -0400 | [diff] [blame] | 590 | /* |
| 591 | * Abort stuck command. Can occur when card is removed while it is being |
| 592 | * read. |
| 593 | */ |
| 594 | static void mmc_omap_abort_command(struct work_struct *work) |
| 595 | { |
| 596 | struct mmc_omap_host *host = container_of(work, struct mmc_omap_host, |
Jarkko Lavinen | 0fb4723 | 2008-03-26 16:09:48 -0400 | [diff] [blame] | 597 | cmd_abort_work); |
| 598 | BUG_ON(!host->cmd); |
Jarkko Lavinen | eb1860b | 2008-03-26 16:09:29 -0400 | [diff] [blame] | 599 | |
| 600 | dev_dbg(mmc_dev(host->mmc), "Aborting stuck command CMD%d\n", |
| 601 | host->cmd->opcode); |
| 602 | |
Jarkko Lavinen | 0fb4723 | 2008-03-26 16:09:48 -0400 | [diff] [blame] | 603 | if (host->cmd->error == 0) |
| 604 | host->cmd->error = -ETIMEDOUT; |
Jarkko Lavinen | eb1860b | 2008-03-26 16:09:29 -0400 | [diff] [blame] | 605 | |
Jarkko Lavinen | 0fb4723 | 2008-03-26 16:09:48 -0400 | [diff] [blame] | 606 | if (host->data == NULL) { |
| 607 | struct mmc_command *cmd; |
| 608 | struct mmc_host *mmc; |
Jarkko Lavinen | eb1860b | 2008-03-26 16:09:29 -0400 | [diff] [blame] | 609 | |
Jarkko Lavinen | 0fb4723 | 2008-03-26 16:09:48 -0400 | [diff] [blame] | 610 | cmd = host->cmd; |
| 611 | host->cmd = NULL; |
| 612 | mmc_omap_send_abort(host, 10000); |
| 613 | |
| 614 | host->mrq = NULL; |
| 615 | mmc = host->mmc; |
Jarkko Lavinen | 0807a9b | 2008-03-26 16:09:52 -0400 | [diff] [blame] | 616 | mmc_omap_release_slot(host->current_slot, 1); |
Jarkko Lavinen | 0fb4723 | 2008-03-26 16:09:48 -0400 | [diff] [blame] | 617 | mmc_request_done(mmc, cmd->mrq); |
| 618 | } else |
| 619 | mmc_omap_cmd_done(host, host->cmd); |
| 620 | |
| 621 | host->abort = 0; |
| 622 | enable_irq(host->irq); |
Jarkko Lavinen | eb1860b | 2008-03-26 16:09:29 -0400 | [diff] [blame] | 623 | } |
| 624 | |
| 625 | static void |
Kees Cook | 2ee4f62 | 2017-10-24 08:03:45 -0700 | [diff] [blame] | 626 | mmc_omap_cmd_timer(struct timer_list *t) |
Jarkko Lavinen | eb1860b | 2008-03-26 16:09:29 -0400 | [diff] [blame] | 627 | { |
Kees Cook | 2ee4f62 | 2017-10-24 08:03:45 -0700 | [diff] [blame] | 628 | struct mmc_omap_host *host = from_timer(host, t, cmd_abort_timer); |
Jarkko Lavinen | 0fb4723 | 2008-03-26 16:09:48 -0400 | [diff] [blame] | 629 | unsigned long flags; |
Jarkko Lavinen | eb1860b | 2008-03-26 16:09:29 -0400 | [diff] [blame] | 630 | |
Jarkko Lavinen | 0fb4723 | 2008-03-26 16:09:48 -0400 | [diff] [blame] | 631 | spin_lock_irqsave(&host->slot_lock, flags); |
| 632 | if (host->cmd != NULL && !host->abort) { |
| 633 | OMAP_MMC_WRITE(host, IE, 0); |
| 634 | disable_irq(host->irq); |
| 635 | host->abort = 1; |
Venkatraman S | b01a4f1 | 2012-05-08 17:05:33 +0530 | [diff] [blame] | 636 | queue_work(host->mmc_omap_wq, &host->cmd_abort_work); |
Jarkko Lavinen | 0fb4723 | 2008-03-26 16:09:48 -0400 | [diff] [blame] | 637 | } |
| 638 | spin_unlock_irqrestore(&host->slot_lock, flags); |
Jarkko Lavinen | eb1860b | 2008-03-26 16:09:29 -0400 | [diff] [blame] | 639 | } |
| 640 | |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 641 | /* PIO only */ |
| 642 | static void |
| 643 | mmc_omap_sg_to_buf(struct mmc_omap_host *host) |
| 644 | { |
| 645 | struct scatterlist *sg; |
| 646 | |
| 647 | sg = host->data->sg + host->sg_idx; |
| 648 | host->buffer_bytes_left = sg->length; |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 649 | host->buffer = sg_virt(sg); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 650 | if (host->buffer_bytes_left > host->total_bytes_left) |
| 651 | host->buffer_bytes_left = host->total_bytes_left; |
| 652 | } |
| 653 | |
Jarkko Lavinen | 0807a9b | 2008-03-26 16:09:52 -0400 | [diff] [blame] | 654 | static void |
Kees Cook | 2ee4f62 | 2017-10-24 08:03:45 -0700 | [diff] [blame] | 655 | mmc_omap_clk_timer(struct timer_list *t) |
Jarkko Lavinen | 0807a9b | 2008-03-26 16:09:52 -0400 | [diff] [blame] | 656 | { |
Kees Cook | 2ee4f62 | 2017-10-24 08:03:45 -0700 | [diff] [blame] | 657 | struct mmc_omap_host *host = from_timer(host, t, clk_timer); |
Jarkko Lavinen | 0807a9b | 2008-03-26 16:09:52 -0400 | [diff] [blame] | 658 | |
| 659 | mmc_omap_fclk_enable(host, 0); |
| 660 | } |
| 661 | |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 662 | /* PIO only */ |
| 663 | static void |
| 664 | mmc_omap_xfer_data(struct mmc_omap_host *host, int write) |
| 665 | { |
Paul Walmsley | 75b53ae | 2012-08-24 06:00:18 +0000 | [diff] [blame] | 666 | int n, nwords; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 667 | |
| 668 | if (host->buffer_bytes_left == 0) { |
| 669 | host->sg_idx++; |
| 670 | BUG_ON(host->sg_idx == host->sg_len); |
| 671 | mmc_omap_sg_to_buf(host); |
| 672 | } |
| 673 | n = 64; |
| 674 | if (n > host->buffer_bytes_left) |
| 675 | n = host->buffer_bytes_left; |
Paul Walmsley | 75b53ae | 2012-08-24 06:00:18 +0000 | [diff] [blame] | 676 | |
Axel Lin | 03a1685 | 2014-05-03 09:07:42 +0800 | [diff] [blame] | 677 | /* Round up to handle odd number of bytes to transfer */ |
| 678 | nwords = DIV_ROUND_UP(n, 2); |
Paul Walmsley | 75b53ae | 2012-08-24 06:00:18 +0000 | [diff] [blame] | 679 | |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 680 | host->buffer_bytes_left -= n; |
| 681 | host->total_bytes_left -= n; |
| 682 | host->data->bytes_xfered += n; |
| 683 | |
| 684 | if (write) { |
Paul Walmsley | 75b53ae | 2012-08-24 06:00:18 +0000 | [diff] [blame] | 685 | __raw_writesw(host->virt_base + OMAP_MMC_REG(host, DATA), |
| 686 | host->buffer, nwords); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 687 | } else { |
Paul Walmsley | 75b53ae | 2012-08-24 06:00:18 +0000 | [diff] [blame] | 688 | __raw_readsw(host->virt_base + OMAP_MMC_REG(host, DATA), |
| 689 | host->buffer, nwords); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 690 | } |
Paul Walmsley | 75b53ae | 2012-08-24 06:00:18 +0000 | [diff] [blame] | 691 | |
| 692 | host->buffer += nwords; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 693 | } |
| 694 | |
Venkatraman S | 75d569d | 2012-08-07 19:03:01 +0530 | [diff] [blame] | 695 | #ifdef CONFIG_MMC_DEBUG |
| 696 | static void mmc_omap_report_irq(struct mmc_omap_host *host, u16 status) |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 697 | { |
| 698 | static const char *mmc_omap_status_bits[] = { |
| 699 | "EOC", "CD", "CB", "BRS", "EOFB", "DTO", "DCRC", "CTO", |
| 700 | "CCRC", "CRW", "AF", "AE", "OCRB", "CIRQ", "CERR" |
| 701 | }; |
Venkatraman S | 75d569d | 2012-08-07 19:03:01 +0530 | [diff] [blame] | 702 | int i; |
| 703 | char res[64], *buf = res; |
| 704 | |
| 705 | buf += sprintf(buf, "MMC IRQ 0x%x:", status); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 706 | |
| 707 | for (i = 0; i < ARRAY_SIZE(mmc_omap_status_bits); i++) |
Venkatraman S | 75d569d | 2012-08-07 19:03:01 +0530 | [diff] [blame] | 708 | if (status & (1 << i)) |
| 709 | buf += sprintf(buf, " %s", mmc_omap_status_bits[i]); |
| 710 | dev_vdbg(mmc_dev(host->mmc), "%s\n", res); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 711 | } |
Venkatraman S | 75d569d | 2012-08-07 19:03:01 +0530 | [diff] [blame] | 712 | #else |
| 713 | static void mmc_omap_report_irq(struct mmc_omap_host *host, u16 status) |
| 714 | { |
| 715 | } |
| 716 | #endif |
| 717 | |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 718 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 719 | static irqreturn_t mmc_omap_irq(int irq, void *dev_id) |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 720 | { |
| 721 | struct mmc_omap_host * host = (struct mmc_omap_host *)dev_id; |
| 722 | u16 status; |
| 723 | int end_command; |
| 724 | int end_transfer; |
Juha Yrjola | 2a50b88 | 2008-03-26 16:09:26 -0400 | [diff] [blame] | 725 | int transfer_error, cmd_error; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 726 | |
| 727 | if (host->cmd == NULL && host->data == NULL) { |
Juha Yrjola juha.yrjola | 3342ee8 | 2006-11-11 23:36:52 +0100 | [diff] [blame] | 728 | status = OMAP_MMC_READ(host, STAT); |
Juha Yrjola | 2a50b88 | 2008-03-26 16:09:26 -0400 | [diff] [blame] | 729 | dev_info(mmc_dev(host->slots[0]->mmc), |
| 730 | "Spurious IRQ 0x%04x\n", status); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 731 | if (status != 0) { |
Juha Yrjola juha.yrjola | 3342ee8 | 2006-11-11 23:36:52 +0100 | [diff] [blame] | 732 | OMAP_MMC_WRITE(host, STAT, status); |
| 733 | OMAP_MMC_WRITE(host, IE, 0); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 734 | } |
| 735 | return IRQ_HANDLED; |
| 736 | } |
| 737 | |
| 738 | end_command = 0; |
| 739 | end_transfer = 0; |
| 740 | transfer_error = 0; |
Juha Yrjola | 2a50b88 | 2008-03-26 16:09:26 -0400 | [diff] [blame] | 741 | cmd_error = 0; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 742 | |
Juha Yrjola juha.yrjola | 3342ee8 | 2006-11-11 23:36:52 +0100 | [diff] [blame] | 743 | while ((status = OMAP_MMC_READ(host, STAT)) != 0) { |
Juha Yrjola | 2a50b88 | 2008-03-26 16:09:26 -0400 | [diff] [blame] | 744 | int cmd; |
| 745 | |
Juha Yrjola juha.yrjola | 3342ee8 | 2006-11-11 23:36:52 +0100 | [diff] [blame] | 746 | OMAP_MMC_WRITE(host, STAT, status); |
Juha Yrjola | 2a50b88 | 2008-03-26 16:09:26 -0400 | [diff] [blame] | 747 | if (host->cmd != NULL) |
| 748 | cmd = host->cmd->opcode; |
| 749 | else |
| 750 | cmd = -1; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 751 | dev_dbg(mmc_dev(host->mmc), "MMC IRQ %04x (CMD %d): ", |
Juha Yrjola | 2a50b88 | 2008-03-26 16:09:26 -0400 | [diff] [blame] | 752 | status, cmd); |
Venkatraman S | 75d569d | 2012-08-07 19:03:01 +0530 | [diff] [blame] | 753 | mmc_omap_report_irq(host, status); |
| 754 | |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 755 | if (host->total_bytes_left) { |
| 756 | if ((status & OMAP_MMC_STAT_A_FULL) || |
| 757 | (status & OMAP_MMC_STAT_END_OF_DATA)) |
| 758 | mmc_omap_xfer_data(host, 0); |
| 759 | if (status & OMAP_MMC_STAT_A_EMPTY) |
| 760 | mmc_omap_xfer_data(host, 1); |
| 761 | } |
| 762 | |
Juha Yrjola | 2a50b88 | 2008-03-26 16:09:26 -0400 | [diff] [blame] | 763 | if (status & OMAP_MMC_STAT_END_OF_DATA) |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 764 | end_transfer = 1; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 765 | |
| 766 | if (status & OMAP_MMC_STAT_DATA_TOUT) { |
Juha Yrjola | 2a50b88 | 2008-03-26 16:09:26 -0400 | [diff] [blame] | 767 | dev_dbg(mmc_dev(host->mmc), "data timeout (CMD%d)\n", |
| 768 | cmd); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 769 | if (host->data) { |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 770 | host->data->error = -ETIMEDOUT; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 771 | transfer_error = 1; |
| 772 | } |
| 773 | } |
| 774 | |
| 775 | if (status & OMAP_MMC_STAT_DATA_CRC) { |
| 776 | if (host->data) { |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 777 | host->data->error = -EILSEQ; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 778 | dev_dbg(mmc_dev(host->mmc), |
| 779 | "data CRC error, bytes left %d\n", |
| 780 | host->total_bytes_left); |
| 781 | transfer_error = 1; |
| 782 | } else { |
| 783 | dev_dbg(mmc_dev(host->mmc), "data CRC error\n"); |
| 784 | } |
| 785 | } |
| 786 | |
| 787 | if (status & OMAP_MMC_STAT_CMD_TOUT) { |
| 788 | /* Timeouts are routine with some commands */ |
| 789 | if (host->cmd) { |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 790 | struct mmc_omap_slot *slot = |
| 791 | host->current_slot; |
Juha Yrjola | 2a50b88 | 2008-03-26 16:09:26 -0400 | [diff] [blame] | 792 | if (slot == NULL || |
| 793 | !mmc_omap_cover_is_open(slot)) |
Juha Yrjola | 5a0f3f1 | 2008-03-26 16:09:08 -0400 | [diff] [blame] | 794 | dev_err(mmc_dev(host->mmc), |
Juha Yrjola | 2a50b88 | 2008-03-26 16:09:26 -0400 | [diff] [blame] | 795 | "command timeout (CMD%d)\n", |
| 796 | cmd); |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 797 | host->cmd->error = -ETIMEDOUT; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 798 | end_command = 1; |
Juha Yrjola | 2a50b88 | 2008-03-26 16:09:26 -0400 | [diff] [blame] | 799 | cmd_error = 1; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 800 | } |
| 801 | } |
| 802 | |
| 803 | if (status & OMAP_MMC_STAT_CMD_CRC) { |
| 804 | if (host->cmd) { |
| 805 | dev_err(mmc_dev(host->mmc), |
| 806 | "command CRC error (CMD%d, arg 0x%08x)\n", |
Juha Yrjola | 2a50b88 | 2008-03-26 16:09:26 -0400 | [diff] [blame] | 807 | cmd, host->cmd->arg); |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 808 | host->cmd->error = -EILSEQ; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 809 | end_command = 1; |
Juha Yrjola | 2a50b88 | 2008-03-26 16:09:26 -0400 | [diff] [blame] | 810 | cmd_error = 1; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 811 | } else |
| 812 | dev_err(mmc_dev(host->mmc), |
| 813 | "command CRC error without cmd?\n"); |
| 814 | } |
| 815 | |
| 816 | if (status & OMAP_MMC_STAT_CARD_ERR) { |
Ragner Magalhaes | 0107a4b | 2007-06-13 19:09:28 +0200 | [diff] [blame] | 817 | dev_dbg(mmc_dev(host->mmc), |
| 818 | "ignoring card status error (CMD%d)\n", |
Juha Yrjola | 2a50b88 | 2008-03-26 16:09:26 -0400 | [diff] [blame] | 819 | cmd); |
Ragner Magalhaes | 0107a4b | 2007-06-13 19:09:28 +0200 | [diff] [blame] | 820 | end_command = 1; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 821 | } |
| 822 | |
| 823 | /* |
| 824 | * NOTE: On 1610 the END_OF_CMD may come too early when |
Juha Yrjola | 2a50b88 | 2008-03-26 16:09:26 -0400 | [diff] [blame] | 825 | * starting a write |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 826 | */ |
| 827 | if ((status & OMAP_MMC_STAT_END_OF_CMD) && |
| 828 | (!(status & OMAP_MMC_STAT_A_EMPTY))) { |
| 829 | end_command = 1; |
| 830 | } |
| 831 | } |
| 832 | |
Jarkko Lavinen | 0fb4723 | 2008-03-26 16:09:48 -0400 | [diff] [blame] | 833 | if (cmd_error && host->data) { |
| 834 | del_timer(&host->cmd_abort_timer); |
| 835 | host->abort = 1; |
| 836 | OMAP_MMC_WRITE(host, IE, 0); |
Ben Nizette | e749c6f | 2009-04-16 15:55:21 +1000 | [diff] [blame] | 837 | disable_irq_nosync(host->irq); |
Venkatraman S | b01a4f1 | 2012-05-08 17:05:33 +0530 | [diff] [blame] | 838 | queue_work(host->mmc_omap_wq, &host->cmd_abort_work); |
Jarkko Lavinen | 0fb4723 | 2008-03-26 16:09:48 -0400 | [diff] [blame] | 839 | return IRQ_HANDLED; |
| 840 | } |
| 841 | |
Michael Buesch | f694751 | 2011-04-11 17:00:44 -0400 | [diff] [blame] | 842 | if (end_command && host->cmd) |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 843 | mmc_omap_cmd_done(host, host->cmd); |
Juha Yrjola | 2a50b88 | 2008-03-26 16:09:26 -0400 | [diff] [blame] | 844 | if (host->data != NULL) { |
| 845 | if (transfer_error) |
| 846 | mmc_omap_xfer_done(host, host->data); |
| 847 | else if (end_transfer) |
| 848 | mmc_omap_end_of_data(host, host->data); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 849 | } |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 850 | |
| 851 | return IRQ_HANDLED; |
| 852 | } |
| 853 | |
Jarkko Lavinen | 7584d27 | 2008-03-26 16:09:42 -0400 | [diff] [blame] | 854 | void omap_mmc_notify_cover_event(struct device *dev, int num, int is_closed) |
Juha Yrjola | 5a0f3f1 | 2008-03-26 16:09:08 -0400 | [diff] [blame] | 855 | { |
Jarkko Lavinen | 7584d27 | 2008-03-26 16:09:42 -0400 | [diff] [blame] | 856 | int cover_open; |
Juha Yrjola | 5a0f3f1 | 2008-03-26 16:09:08 -0400 | [diff] [blame] | 857 | struct mmc_omap_host *host = dev_get_drvdata(dev); |
Jarkko Lavinen | 7584d27 | 2008-03-26 16:09:42 -0400 | [diff] [blame] | 858 | struct mmc_omap_slot *slot = host->slots[num]; |
Juha Yrjola | 5a0f3f1 | 2008-03-26 16:09:08 -0400 | [diff] [blame] | 859 | |
Jarkko Lavinen | 7584d27 | 2008-03-26 16:09:42 -0400 | [diff] [blame] | 860 | BUG_ON(num >= host->nr_slots); |
Juha Yrjola | 5a0f3f1 | 2008-03-26 16:09:08 -0400 | [diff] [blame] | 861 | |
| 862 | /* Other subsystems can call in here before we're initialised. */ |
Jarkko Lavinen | 7584d27 | 2008-03-26 16:09:42 -0400 | [diff] [blame] | 863 | if (host->nr_slots == 0 || !host->slots[num]) |
Juha Yrjola | 5a0f3f1 | 2008-03-26 16:09:08 -0400 | [diff] [blame] | 864 | return; |
| 865 | |
Juha Yrjola | 5a0f3f1 | 2008-03-26 16:09:08 -0400 | [diff] [blame] | 866 | cover_open = mmc_omap_cover_is_open(slot); |
| 867 | if (cover_open != slot->cover_open) { |
Juha Yrjola | 5a0f3f1 | 2008-03-26 16:09:08 -0400 | [diff] [blame] | 868 | slot->cover_open = cover_open; |
Jarkko Lavinen | 7584d27 | 2008-03-26 16:09:42 -0400 | [diff] [blame] | 869 | sysfs_notify(&slot->mmc->class_dev.kobj, NULL, "cover_switch"); |
Juha Yrjola | 5a0f3f1 | 2008-03-26 16:09:08 -0400 | [diff] [blame] | 870 | } |
Jarkko Lavinen | 7584d27 | 2008-03-26 16:09:42 -0400 | [diff] [blame] | 871 | |
| 872 | tasklet_hi_schedule(&slot->cover_tasklet); |
| 873 | } |
| 874 | |
Kees Cook | 2ee4f62 | 2017-10-24 08:03:45 -0700 | [diff] [blame] | 875 | static void mmc_omap_cover_timer(struct timer_list *t) |
Jarkko Lavinen | 7584d27 | 2008-03-26 16:09:42 -0400 | [diff] [blame] | 876 | { |
Kees Cook | 2ee4f62 | 2017-10-24 08:03:45 -0700 | [diff] [blame] | 877 | struct mmc_omap_slot *slot = from_timer(slot, t, cover_timer); |
Jarkko Lavinen | 7584d27 | 2008-03-26 16:09:42 -0400 | [diff] [blame] | 878 | tasklet_schedule(&slot->cover_tasklet); |
| 879 | } |
| 880 | |
Emil Renner Berthing | 0f5a7cb | 2021-02-04 16:18:42 +0100 | [diff] [blame] | 881 | static void mmc_omap_cover_handler(struct tasklet_struct *t) |
Jarkko Lavinen | 7584d27 | 2008-03-26 16:09:42 -0400 | [diff] [blame] | 882 | { |
Emil Renner Berthing | 0f5a7cb | 2021-02-04 16:18:42 +0100 | [diff] [blame] | 883 | struct mmc_omap_slot *slot = from_tasklet(slot, t, cover_tasklet); |
Jarkko Lavinen | 7584d27 | 2008-03-26 16:09:42 -0400 | [diff] [blame] | 884 | int cover_open = mmc_omap_cover_is_open(slot); |
| 885 | |
| 886 | mmc_detect_change(slot->mmc, 0); |
| 887 | if (!cover_open) |
| 888 | return; |
| 889 | |
| 890 | /* |
| 891 | * If no card is inserted, we postpone polling until |
| 892 | * the cover has been closed. |
| 893 | */ |
Ulf Hansson | 136b0a4 | 2017-01-13 14:14:12 +0100 | [diff] [blame] | 894 | if (slot->mmc->card == NULL) |
Jarkko Lavinen | 7584d27 | 2008-03-26 16:09:42 -0400 | [diff] [blame] | 895 | return; |
| 896 | |
| 897 | mod_timer(&slot->cover_timer, |
| 898 | jiffies + msecs_to_jiffies(OMAP_MMC_COVER_POLL_DELAY)); |
Juha Yrjola | 5a0f3f1 | 2008-03-26 16:09:08 -0400 | [diff] [blame] | 899 | } |
| 900 | |
Russell King | 3451c06 | 2012-04-21 22:35:42 +0100 | [diff] [blame] | 901 | static void mmc_omap_dma_callback(void *priv) |
| 902 | { |
| 903 | struct mmc_omap_host *host = priv; |
| 904 | struct mmc_data *data = host->data; |
| 905 | |
| 906 | /* If we got to the end of DMA, assume everything went well */ |
| 907 | data->bytes_xfered += data->blocks * data->blksz; |
| 908 | |
| 909 | mmc_omap_dma_done(host, data); |
| 910 | } |
| 911 | |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 912 | static inline void set_cmd_timeout(struct mmc_omap_host *host, struct mmc_request *req) |
| 913 | { |
| 914 | u16 reg; |
| 915 | |
Juha Yrjola juha.yrjola | 3342ee8 | 2006-11-11 23:36:52 +0100 | [diff] [blame] | 916 | reg = OMAP_MMC_READ(host, SDIO); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 917 | reg &= ~(1 << 5); |
Juha Yrjola juha.yrjola | 3342ee8 | 2006-11-11 23:36:52 +0100 | [diff] [blame] | 918 | OMAP_MMC_WRITE(host, SDIO, reg); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 919 | /* Set maximum timeout */ |
Aaro Koskinen | a6327b5 | 2019-02-03 00:14:33 +0200 | [diff] [blame] | 920 | OMAP_MMC_WRITE(host, CTO, 0xfd); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 921 | } |
| 922 | |
| 923 | static inline void set_data_timeout(struct mmc_omap_host *host, struct mmc_request *req) |
| 924 | { |
Juha Yrjola | b8f9f0e | 2008-03-26 16:09:16 -0400 | [diff] [blame] | 925 | unsigned int timeout, cycle_ns; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 926 | u16 reg; |
| 927 | |
Juha Yrjola | b8f9f0e | 2008-03-26 16:09:16 -0400 | [diff] [blame] | 928 | cycle_ns = 1000000000 / host->current_slot->fclk_freq; |
| 929 | timeout = req->data->timeout_ns / cycle_ns; |
| 930 | timeout += req->data->timeout_clks; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 931 | |
| 932 | /* Check if we need to use timeout multiplier register */ |
Juha Yrjola juha.yrjola | 3342ee8 | 2006-11-11 23:36:52 +0100 | [diff] [blame] | 933 | reg = OMAP_MMC_READ(host, SDIO); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 934 | if (timeout > 0xffff) { |
| 935 | reg |= (1 << 5); |
| 936 | timeout /= 1024; |
| 937 | } else |
| 938 | reg &= ~(1 << 5); |
Juha Yrjola juha.yrjola | 3342ee8 | 2006-11-11 23:36:52 +0100 | [diff] [blame] | 939 | OMAP_MMC_WRITE(host, SDIO, reg); |
| 940 | OMAP_MMC_WRITE(host, DTO, timeout); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 941 | } |
| 942 | |
| 943 | static void |
| 944 | mmc_omap_prepare_data(struct mmc_omap_host *host, struct mmc_request *req) |
| 945 | { |
| 946 | struct mmc_data *data = req->data; |
Jarkko Nikula | a6c668f | 2014-02-22 18:01:42 +0200 | [diff] [blame] | 947 | int i, use_dma = 1, block_size; |
Fabian Frederick | 8292adc | 2015-06-16 21:15:15 +0200 | [diff] [blame] | 948 | struct scatterlist *sg; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 949 | unsigned sg_len; |
| 950 | |
| 951 | host->data = data; |
| 952 | if (data == NULL) { |
Juha Yrjola juha.yrjola | 3342ee8 | 2006-11-11 23:36:52 +0100 | [diff] [blame] | 953 | OMAP_MMC_WRITE(host, BLEN, 0); |
| 954 | OMAP_MMC_WRITE(host, NBLK, 0); |
| 955 | OMAP_MMC_WRITE(host, BUF, 0); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 956 | host->dma_in_use = 0; |
| 957 | set_cmd_timeout(host, req); |
| 958 | return; |
| 959 | } |
| 960 | |
Russell King | a3fd4a1 | 2006-06-04 17:51:15 +0100 | [diff] [blame] | 961 | block_size = data->blksz; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 962 | |
Juha Yrjola juha.yrjola | 3342ee8 | 2006-11-11 23:36:52 +0100 | [diff] [blame] | 963 | OMAP_MMC_WRITE(host, NBLK, data->blocks - 1); |
| 964 | OMAP_MMC_WRITE(host, BLEN, block_size - 1); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 965 | set_data_timeout(host, req); |
| 966 | |
| 967 | /* cope with calling layer confusion; it issues "single |
| 968 | * block" writes using multi-block scatterlists. |
| 969 | */ |
| 970 | sg_len = (data->blocks == 1) ? 1 : data->sg_len; |
| 971 | |
| 972 | /* Only do DMA for entire blocks */ |
Fabian Frederick | 8292adc | 2015-06-16 21:15:15 +0200 | [diff] [blame] | 973 | for_each_sg(data->sg, sg, sg_len, i) { |
| 974 | if ((sg->length % block_size) != 0) { |
Jarkko Nikula | a6c668f | 2014-02-22 18:01:42 +0200 | [diff] [blame] | 975 | use_dma = 0; |
| 976 | break; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 977 | } |
| 978 | } |
| 979 | |
| 980 | host->sg_idx = 0; |
| 981 | if (use_dma) { |
Russell King | 3451c06 | 2012-04-21 22:35:42 +0100 | [diff] [blame] | 982 | enum dma_data_direction dma_data_dir; |
| 983 | struct dma_async_tx_descriptor *tx; |
| 984 | struct dma_chan *c; |
| 985 | u32 burst, *bp; |
| 986 | u16 buf; |
| 987 | |
| 988 | /* |
| 989 | * FIFO is 16x2 bytes on 15xx, and 32x2 bytes on 16xx |
| 990 | * and 24xx. Use 16 or 32 word frames when the |
| 991 | * blocksize is at least that large. Blocksize is |
| 992 | * usually 512 bytes; but not for some SD reads. |
| 993 | */ |
Tony Lindgren | 53db20d | 2012-10-15 12:10:33 -0700 | [diff] [blame] | 994 | burst = mmc_omap15xx() ? 32 : 64; |
Russell King | 3451c06 | 2012-04-21 22:35:42 +0100 | [diff] [blame] | 995 | if (burst > data->blksz) |
| 996 | burst = data->blksz; |
| 997 | |
| 998 | burst >>= 1; |
| 999 | |
| 1000 | if (data->flags & MMC_DATA_WRITE) { |
| 1001 | c = host->dma_tx; |
| 1002 | bp = &host->dma_tx_burst; |
| 1003 | buf = 0x0f80 | (burst - 1) << 0; |
| 1004 | dma_data_dir = DMA_TO_DEVICE; |
| 1005 | } else { |
| 1006 | c = host->dma_rx; |
| 1007 | bp = &host->dma_rx_burst; |
| 1008 | buf = 0x800f | (burst - 1) << 8; |
| 1009 | dma_data_dir = DMA_FROM_DEVICE; |
| 1010 | } |
| 1011 | |
| 1012 | if (!c) |
| 1013 | goto use_pio; |
| 1014 | |
| 1015 | /* Only reconfigure if we have a different burst size */ |
| 1016 | if (*bp != burst) { |
Peter Ujfalusi | df804d5 | 2016-09-14 14:21:54 +0300 | [diff] [blame] | 1017 | struct dma_slave_config cfg = { |
| 1018 | .src_addr = host->phys_base + |
| 1019 | OMAP_MMC_REG(host, DATA), |
| 1020 | .dst_addr = host->phys_base + |
| 1021 | OMAP_MMC_REG(host, DATA), |
| 1022 | .src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES, |
| 1023 | .dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES, |
| 1024 | .src_maxburst = burst, |
| 1025 | .dst_maxburst = burst, |
| 1026 | }; |
Russell King | 3451c06 | 2012-04-21 22:35:42 +0100 | [diff] [blame] | 1027 | |
| 1028 | if (dmaengine_slave_config(c, &cfg)) |
| 1029 | goto use_pio; |
| 1030 | |
| 1031 | *bp = burst; |
| 1032 | } |
| 1033 | |
| 1034 | host->sg_len = dma_map_sg(c->device->dev, data->sg, sg_len, |
| 1035 | dma_data_dir); |
| 1036 | if (host->sg_len == 0) |
| 1037 | goto use_pio; |
| 1038 | |
| 1039 | tx = dmaengine_prep_slave_sg(c, data->sg, host->sg_len, |
| 1040 | data->flags & MMC_DATA_WRITE ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM, |
| 1041 | DMA_PREP_INTERRUPT | DMA_CTRL_ACK); |
| 1042 | if (!tx) |
| 1043 | goto use_pio; |
| 1044 | |
| 1045 | OMAP_MMC_WRITE(host, BUF, buf); |
| 1046 | |
| 1047 | tx->callback = mmc_omap_dma_callback; |
| 1048 | tx->callback_param = host; |
| 1049 | dmaengine_submit(tx); |
| 1050 | host->brs_received = 0; |
| 1051 | host->dma_done = 0; |
| 1052 | host->dma_in_use = 1; |
| 1053 | return; |
| 1054 | } |
| 1055 | use_pio: |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1056 | |
| 1057 | /* Revert to PIO? */ |
Russell King | 4e078fb | 2012-04-21 22:41:10 +0100 | [diff] [blame] | 1058 | OMAP_MMC_WRITE(host, BUF, 0x1f1f); |
| 1059 | host->total_bytes_left = data->blocks * block_size; |
| 1060 | host->sg_len = sg_len; |
| 1061 | mmc_omap_sg_to_buf(host); |
| 1062 | host->dma_in_use = 0; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1063 | } |
| 1064 | |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 1065 | static void mmc_omap_start_request(struct mmc_omap_host *host, |
| 1066 | struct mmc_request *req) |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1067 | { |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 1068 | BUG_ON(host->mrq != NULL); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1069 | |
| 1070 | host->mrq = req; |
| 1071 | |
| 1072 | /* only touch fifo AFTER the controller readies it */ |
| 1073 | mmc_omap_prepare_data(host, req); |
| 1074 | mmc_omap_start_command(host, req->cmd); |
Russell King | 3451c06 | 2012-04-21 22:35:42 +0100 | [diff] [blame] | 1075 | if (host->dma_in_use) { |
| 1076 | struct dma_chan *c = host->data->flags & MMC_DATA_WRITE ? |
| 1077 | host->dma_tx : host->dma_rx; |
| 1078 | |
Russell King | 4e078fb | 2012-04-21 22:41:10 +0100 | [diff] [blame] | 1079 | dma_async_issue_pending(c); |
Russell King | 3451c06 | 2012-04-21 22:35:42 +0100 | [diff] [blame] | 1080 | } |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 1081 | } |
| 1082 | |
| 1083 | static void mmc_omap_request(struct mmc_host *mmc, struct mmc_request *req) |
| 1084 | { |
| 1085 | struct mmc_omap_slot *slot = mmc_priv(mmc); |
| 1086 | struct mmc_omap_host *host = slot->host; |
| 1087 | unsigned long flags; |
| 1088 | |
| 1089 | spin_lock_irqsave(&host->slot_lock, flags); |
| 1090 | if (host->mmc != NULL) { |
| 1091 | BUG_ON(slot->mrq != NULL); |
| 1092 | slot->mrq = req; |
| 1093 | spin_unlock_irqrestore(&host->slot_lock, flags); |
| 1094 | return; |
| 1095 | } else |
| 1096 | host->mmc = mmc; |
| 1097 | spin_unlock_irqrestore(&host->slot_lock, flags); |
| 1098 | mmc_omap_select_slot(slot, 1); |
| 1099 | mmc_omap_start_request(host, req); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1100 | } |
| 1101 | |
Juha Yrjola | 65b5b6e | 2008-03-26 16:09:22 -0400 | [diff] [blame] | 1102 | static void mmc_omap_set_power(struct mmc_omap_slot *slot, int power_on, |
| 1103 | int vdd) |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1104 | { |
Juha Yrjola | 65b5b6e | 2008-03-26 16:09:22 -0400 | [diff] [blame] | 1105 | struct mmc_omap_host *host; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1106 | |
Juha Yrjola | 65b5b6e | 2008-03-26 16:09:22 -0400 | [diff] [blame] | 1107 | host = slot->host; |
| 1108 | |
| 1109 | if (slot->pdata->set_power != NULL) |
| 1110 | slot->pdata->set_power(mmc_dev(slot->mmc), slot->id, power_on, |
| 1111 | vdd); |
Tony Lindgren | 53db20d | 2012-10-15 12:10:33 -0700 | [diff] [blame] | 1112 | if (mmc_omap2()) { |
Juha Yrjola | 65b5b6e | 2008-03-26 16:09:22 -0400 | [diff] [blame] | 1113 | u16 w; |
| 1114 | |
| 1115 | if (power_on) { |
| 1116 | w = OMAP_MMC_READ(host, CON); |
| 1117 | OMAP_MMC_WRITE(host, CON, w | (1 << 11)); |
| 1118 | } else { |
| 1119 | w = OMAP_MMC_READ(host, CON); |
| 1120 | OMAP_MMC_WRITE(host, CON, w & ~(1 << 11)); |
| 1121 | } |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1122 | } |
| 1123 | } |
| 1124 | |
Tony Lindgren | d3af5ab | 2007-05-01 16:36:00 +0200 | [diff] [blame] | 1125 | static int mmc_omap_calc_divisor(struct mmc_host *mmc, struct mmc_ios *ios) |
| 1126 | { |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 1127 | struct mmc_omap_slot *slot = mmc_priv(mmc); |
| 1128 | struct mmc_omap_host *host = slot->host; |
Tony Lindgren | d3af5ab | 2007-05-01 16:36:00 +0200 | [diff] [blame] | 1129 | int func_clk_rate = clk_get_rate(host->fclk); |
| 1130 | int dsor; |
| 1131 | |
| 1132 | if (ios->clock == 0) |
| 1133 | return 0; |
| 1134 | |
| 1135 | dsor = func_clk_rate / ios->clock; |
| 1136 | if (dsor < 1) |
| 1137 | dsor = 1; |
| 1138 | |
| 1139 | if (func_clk_rate / dsor > ios->clock) |
| 1140 | dsor++; |
| 1141 | |
| 1142 | if (dsor > 250) |
| 1143 | dsor = 250; |
Tony Lindgren | d3af5ab | 2007-05-01 16:36:00 +0200 | [diff] [blame] | 1144 | |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 1145 | slot->fclk_freq = func_clk_rate / dsor; |
| 1146 | |
Tony Lindgren | d3af5ab | 2007-05-01 16:36:00 +0200 | [diff] [blame] | 1147 | if (ios->bus_width == MMC_BUS_WIDTH_4) |
| 1148 | dsor |= 1 << 15; |
| 1149 | |
| 1150 | return dsor; |
| 1151 | } |
| 1152 | |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1153 | static void mmc_omap_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) |
| 1154 | { |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 1155 | struct mmc_omap_slot *slot = mmc_priv(mmc); |
| 1156 | struct mmc_omap_host *host = slot->host; |
| 1157 | int i, dsor; |
Aaro Koskinen | e8cde62 | 2018-11-20 01:14:00 +0200 | [diff] [blame] | 1158 | int clk_enabled, init_stream; |
Juha Yrjola | 65b5b6e | 2008-03-26 16:09:22 -0400 | [diff] [blame] | 1159 | |
| 1160 | mmc_omap_select_slot(slot, 0); |
| 1161 | |
Jarkko Lavinen | 0807a9b | 2008-03-26 16:09:52 -0400 | [diff] [blame] | 1162 | dsor = mmc_omap_calc_divisor(mmc, ios); |
| 1163 | |
Juha Yrjola | 65b5b6e | 2008-03-26 16:09:22 -0400 | [diff] [blame] | 1164 | if (ios->vdd != slot->vdd) |
| 1165 | slot->vdd = ios->vdd; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1166 | |
Jarkko Lavinen | 0807a9b | 2008-03-26 16:09:52 -0400 | [diff] [blame] | 1167 | clk_enabled = 0; |
Aaro Koskinen | e8cde62 | 2018-11-20 01:14:00 +0200 | [diff] [blame] | 1168 | init_stream = 0; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1169 | switch (ios->power_mode) { |
| 1170 | case MMC_POWER_OFF: |
Juha Yrjola | 65b5b6e | 2008-03-26 16:09:22 -0400 | [diff] [blame] | 1171 | mmc_omap_set_power(slot, 0, ios->vdd); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1172 | break; |
| 1173 | case MMC_POWER_UP: |
Tony Lindgren | 46a6730 | 2007-05-01 16:34:16 +0200 | [diff] [blame] | 1174 | /* Cannot touch dsor yet, just power up MMC */ |
Juha Yrjola | 65b5b6e | 2008-03-26 16:09:22 -0400 | [diff] [blame] | 1175 | mmc_omap_set_power(slot, 1, ios->vdd); |
Aaro Koskinen | e8cde62 | 2018-11-20 01:14:00 +0200 | [diff] [blame] | 1176 | slot->power_mode = ios->power_mode; |
Juha Yrjola | 65b5b6e | 2008-03-26 16:09:22 -0400 | [diff] [blame] | 1177 | goto exit; |
Tony Lindgren | 46a6730 | 2007-05-01 16:34:16 +0200 | [diff] [blame] | 1178 | case MMC_POWER_ON: |
Jarkko Lavinen | 0807a9b | 2008-03-26 16:09:52 -0400 | [diff] [blame] | 1179 | mmc_omap_fclk_enable(host, 1); |
| 1180 | clk_enabled = 1; |
Juha Yrjola juha.yrjola | c5cb431 | 2006-11-11 23:42:39 +0100 | [diff] [blame] | 1181 | dsor |= 1 << 11; |
Aaro Koskinen | e8cde62 | 2018-11-20 01:14:00 +0200 | [diff] [blame] | 1182 | if (slot->power_mode != MMC_POWER_ON) |
| 1183 | init_stream = 1; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1184 | break; |
| 1185 | } |
Aaro Koskinen | e8cde62 | 2018-11-20 01:14:00 +0200 | [diff] [blame] | 1186 | slot->power_mode = ios->power_mode; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1187 | |
Juha Yrjola | 65b5b6e | 2008-03-26 16:09:22 -0400 | [diff] [blame] | 1188 | if (slot->bus_mode != ios->bus_mode) { |
| 1189 | if (slot->pdata->set_bus_mode != NULL) |
| 1190 | slot->pdata->set_bus_mode(mmc_dev(mmc), slot->id, |
| 1191 | ios->bus_mode); |
| 1192 | slot->bus_mode = ios->bus_mode; |
| 1193 | } |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1194 | |
| 1195 | /* On insanely high arm_per frequencies something sometimes |
| 1196 | * goes somehow out of sync, and the POW bit is not being set, |
| 1197 | * which results in the while loop below getting stuck. |
| 1198 | * Writing to the CON register twice seems to do the trick. */ |
| 1199 | for (i = 0; i < 2; i++) |
Juha Yrjola juha.yrjola | 3342ee8 | 2006-11-11 23:36:52 +0100 | [diff] [blame] | 1200 | OMAP_MMC_WRITE(host, CON, dsor); |
Juha Yrjola | 65b5b6e | 2008-03-26 16:09:22 -0400 | [diff] [blame] | 1201 | slot->saved_con = dsor; |
Aaro Koskinen | e8cde62 | 2018-11-20 01:14:00 +0200 | [diff] [blame] | 1202 | if (init_stream) { |
Jarkko Lavinen | 9d7c6ee | 2008-03-26 16:10:02 -0400 | [diff] [blame] | 1203 | /* worst case at 400kHz, 80 cycles makes 200 microsecs */ |
| 1204 | int usecs = 250; |
| 1205 | |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1206 | /* Send clock cycles, poll completion */ |
Juha Yrjola juha.yrjola | 3342ee8 | 2006-11-11 23:36:52 +0100 | [diff] [blame] | 1207 | OMAP_MMC_WRITE(host, IE, 0); |
| 1208 | OMAP_MMC_WRITE(host, STAT, 0xffff); |
Juha Yrjola juha.yrjola | c5cb431 | 2006-11-11 23:42:39 +0100 | [diff] [blame] | 1209 | OMAP_MMC_WRITE(host, CMD, 1 << 7); |
Jarkko Lavinen | 9d7c6ee | 2008-03-26 16:10:02 -0400 | [diff] [blame] | 1210 | while (usecs > 0 && (OMAP_MMC_READ(host, STAT) & 1) == 0) { |
| 1211 | udelay(1); |
| 1212 | usecs--; |
| 1213 | } |
Juha Yrjola juha.yrjola | 3342ee8 | 2006-11-11 23:36:52 +0100 | [diff] [blame] | 1214 | OMAP_MMC_WRITE(host, STAT, 1); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1215 | } |
Juha Yrjola | 65b5b6e | 2008-03-26 16:09:22 -0400 | [diff] [blame] | 1216 | |
| 1217 | exit: |
Jarkko Lavinen | 0807a9b | 2008-03-26 16:09:52 -0400 | [diff] [blame] | 1218 | mmc_omap_release_slot(slot, clk_enabled); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1219 | } |
| 1220 | |
David Brownell | ab7aefd | 2006-11-12 17:55:30 -0800 | [diff] [blame] | 1221 | static const struct mmc_host_ops mmc_omap_ops = { |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1222 | .request = mmc_omap_request, |
| 1223 | .set_ios = mmc_omap_set_ios, |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1224 | }; |
| 1225 | |
Bill Pemberton | c3be1ef | 2012-11-19 13:23:06 -0500 | [diff] [blame] | 1226 | static int mmc_omap_new_slot(struct mmc_omap_host *host, int id) |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 1227 | { |
| 1228 | struct mmc_omap_slot *slot = NULL; |
| 1229 | struct mmc_host *mmc; |
| 1230 | int r; |
| 1231 | |
| 1232 | mmc = mmc_alloc_host(sizeof(struct mmc_omap_slot), host->dev); |
| 1233 | if (mmc == NULL) |
| 1234 | return -ENOMEM; |
| 1235 | |
| 1236 | slot = mmc_priv(mmc); |
| 1237 | slot->host = host; |
| 1238 | slot->mmc = mmc; |
| 1239 | slot->id = id; |
Aaro Koskinen | e8cde62 | 2018-11-20 01:14:00 +0200 | [diff] [blame] | 1240 | slot->power_mode = MMC_POWER_UNDEFINED; |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 1241 | slot->pdata = &host->pdata->slots[id]; |
| 1242 | |
| 1243 | host->slots[id] = slot; |
| 1244 | |
Pierre Ossman | 23af603 | 2008-07-06 01:10:27 +0200 | [diff] [blame] | 1245 | mmc->caps = 0; |
Tony Lindgren | 90c62bf | 2008-12-10 17:37:17 -0800 | [diff] [blame] | 1246 | if (host->pdata->slots[id].wires >= 4) |
Ulf Hansson | 1be64c7 | 2020-05-08 13:29:02 +0200 | [diff] [blame] | 1247 | mmc->caps |= MMC_CAP_4_BIT_DATA; |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 1248 | |
| 1249 | mmc->ops = &mmc_omap_ops; |
| 1250 | mmc->f_min = 400000; |
| 1251 | |
Tony Lindgren | 53db20d | 2012-10-15 12:10:33 -0700 | [diff] [blame] | 1252 | if (mmc_omap2()) |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 1253 | mmc->f_max = 48000000; |
| 1254 | else |
| 1255 | mmc->f_max = 24000000; |
| 1256 | if (host->pdata->max_freq) |
| 1257 | mmc->f_max = min(host->pdata->max_freq, mmc->f_max); |
| 1258 | mmc->ocr_avail = slot->pdata->ocr_mask; |
| 1259 | |
| 1260 | /* Use scatterlist DMA to reduce per-transfer costs. |
| 1261 | * NOTE max_seg_size assumption that small blocks aren't |
| 1262 | * normally used (except e.g. for reading SD registers). |
| 1263 | */ |
Martin K. Petersen | a36274e | 2010-09-10 01:33:59 -0400 | [diff] [blame] | 1264 | mmc->max_segs = 32; |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 1265 | mmc->max_blk_size = 2048; /* BLEN is 11 bits (+1) */ |
| 1266 | mmc->max_blk_count = 2048; /* NBLK is 11 bits (+1) */ |
| 1267 | mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count; |
| 1268 | mmc->max_seg_size = mmc->max_req_size; |
| 1269 | |
Jarkko Nikula | 0e5c93e | 2014-02-22 18:01:37 +0200 | [diff] [blame] | 1270 | if (slot->pdata->get_cover_state != NULL) { |
Kees Cook | 2ee4f62 | 2017-10-24 08:03:45 -0700 | [diff] [blame] | 1271 | timer_setup(&slot->cover_timer, mmc_omap_cover_timer, 0); |
Emil Renner Berthing | 0f5a7cb | 2021-02-04 16:18:42 +0100 | [diff] [blame] | 1272 | tasklet_setup(&slot->cover_tasklet, mmc_omap_cover_handler); |
Jarkko Nikula | 0e5c93e | 2014-02-22 18:01:37 +0200 | [diff] [blame] | 1273 | } |
| 1274 | |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 1275 | r = mmc_add_host(mmc); |
| 1276 | if (r < 0) |
| 1277 | goto err_remove_host; |
| 1278 | |
| 1279 | if (slot->pdata->name != NULL) { |
| 1280 | r = device_create_file(&mmc->class_dev, |
| 1281 | &dev_attr_slot_name); |
| 1282 | if (r < 0) |
| 1283 | goto err_remove_host; |
| 1284 | } |
| 1285 | |
Juha Yrjola | 5a0f3f1 | 2008-03-26 16:09:08 -0400 | [diff] [blame] | 1286 | if (slot->pdata->get_cover_state != NULL) { |
| 1287 | r = device_create_file(&mmc->class_dev, |
| 1288 | &dev_attr_cover_switch); |
| 1289 | if (r < 0) |
| 1290 | goto err_remove_slot_name; |
Jarkko Lavinen | 7584d27 | 2008-03-26 16:09:42 -0400 | [diff] [blame] | 1291 | tasklet_schedule(&slot->cover_tasklet); |
Juha Yrjola | 5a0f3f1 | 2008-03-26 16:09:08 -0400 | [diff] [blame] | 1292 | } |
| 1293 | |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 1294 | return 0; |
| 1295 | |
Juha Yrjola | 5a0f3f1 | 2008-03-26 16:09:08 -0400 | [diff] [blame] | 1296 | err_remove_slot_name: |
| 1297 | if (slot->pdata->name != NULL) |
| 1298 | device_remove_file(&mmc->class_dev, &dev_attr_slot_name); |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 1299 | err_remove_host: |
| 1300 | mmc_remove_host(mmc); |
| 1301 | mmc_free_host(mmc); |
| 1302 | return r; |
| 1303 | } |
| 1304 | |
| 1305 | static void mmc_omap_remove_slot(struct mmc_omap_slot *slot) |
| 1306 | { |
| 1307 | struct mmc_host *mmc = slot->mmc; |
| 1308 | |
| 1309 | if (slot->pdata->name != NULL) |
| 1310 | device_remove_file(&mmc->class_dev, &dev_attr_slot_name); |
Juha Yrjola | 5a0f3f1 | 2008-03-26 16:09:08 -0400 | [diff] [blame] | 1311 | if (slot->pdata->get_cover_state != NULL) |
| 1312 | device_remove_file(&mmc->class_dev, &dev_attr_cover_switch); |
| 1313 | |
Jarkko Lavinen | 7584d27 | 2008-03-26 16:09:42 -0400 | [diff] [blame] | 1314 | tasklet_kill(&slot->cover_tasklet); |
| 1315 | del_timer_sync(&slot->cover_timer); |
Venkatraman S | b01a4f1 | 2012-05-08 17:05:33 +0530 | [diff] [blame] | 1316 | flush_workqueue(slot->host->mmc_omap_wq); |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 1317 | |
| 1318 | mmc_remove_host(mmc); |
| 1319 | mmc_free_host(mmc); |
| 1320 | } |
| 1321 | |
Bill Pemberton | c3be1ef | 2012-11-19 13:23:06 -0500 | [diff] [blame] | 1322 | static int mmc_omap_probe(struct platform_device *pdev) |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1323 | { |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 1324 | struct omap_mmc_platform_data *pdata = pdev->dev.platform_data; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1325 | struct mmc_omap_host *host = NULL; |
Juha Yrjola juha.yrjola | 81ca703 | 2006-11-11 23:39:20 +0100 | [diff] [blame] | 1326 | struct resource *res; |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 1327 | int i, ret = 0; |
Tony Lindgren | ce9c1a8 | 2006-07-01 19:56:44 +0100 | [diff] [blame] | 1328 | int irq; |
Juha Yrjola juha.yrjola | 81ca703 | 2006-11-11 23:39:20 +0100 | [diff] [blame] | 1329 | |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 1330 | if (pdata == NULL) { |
Juha Yrjola juha.yrjola | 81ca703 | 2006-11-11 23:39:20 +0100 | [diff] [blame] | 1331 | dev_err(&pdev->dev, "platform data missing\n"); |
| 1332 | return -ENXIO; |
| 1333 | } |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 1334 | if (pdata->nr_slots == 0) { |
| 1335 | dev_err(&pdev->dev, "no slots\n"); |
Tony Lindgren | 9cb238c | 2013-11-26 15:50:33 -0800 | [diff] [blame] | 1336 | return -EPROBE_DEFER; |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 1337 | } |
Juha Yrjola juha.yrjola | 81ca703 | 2006-11-11 23:39:20 +0100 | [diff] [blame] | 1338 | |
Jarkko Nikula | ae9b79c | 2014-02-22 18:01:38 +0200 | [diff] [blame] | 1339 | host = devm_kzalloc(&pdev->dev, sizeof(struct mmc_omap_host), |
| 1340 | GFP_KERNEL); |
Jarkko Nikula | 64ac16e | 2014-02-22 18:01:41 +0200 | [diff] [blame] | 1341 | if (host == NULL) |
| 1342 | return -ENOMEM; |
| 1343 | |
| 1344 | irq = platform_get_irq(pdev, 0); |
| 1345 | if (irq < 0) |
| 1346 | return -ENXIO; |
| 1347 | |
| 1348 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 1349 | host->virt_base = devm_ioremap_resource(&pdev->dev, res); |
| 1350 | if (IS_ERR(host->virt_base)) |
| 1351 | return PTR_ERR(host->virt_base); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1352 | |
Jarkko Lavinen | 0f602ec | 2008-03-26 16:09:58 -0400 | [diff] [blame] | 1353 | INIT_WORK(&host->slot_release_work, mmc_omap_slot_release_work); |
| 1354 | INIT_WORK(&host->send_stop_work, mmc_omap_send_stop_work); |
| 1355 | |
Jarkko Lavinen | 0fb4723 | 2008-03-26 16:09:48 -0400 | [diff] [blame] | 1356 | INIT_WORK(&host->cmd_abort_work, mmc_omap_abort_command); |
Kees Cook | 2ee4f62 | 2017-10-24 08:03:45 -0700 | [diff] [blame] | 1357 | timer_setup(&host->cmd_abort_timer, mmc_omap_cmd_timer, 0); |
Jarkko Lavinen | eb1860b | 2008-03-26 16:09:29 -0400 | [diff] [blame] | 1358 | |
Jarkko Lavinen | 0807a9b | 2008-03-26 16:09:52 -0400 | [diff] [blame] | 1359 | spin_lock_init(&host->clk_lock); |
Kees Cook | 2ee4f62 | 2017-10-24 08:03:45 -0700 | [diff] [blame] | 1360 | timer_setup(&host->clk_timer, mmc_omap_clk_timer, 0); |
Jarkko Lavinen | 0807a9b | 2008-03-26 16:09:52 -0400 | [diff] [blame] | 1361 | |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1362 | spin_lock_init(&host->dma_lock); |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 1363 | spin_lock_init(&host->slot_lock); |
| 1364 | init_waitqueue_head(&host->slot_wq); |
| 1365 | |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 1366 | host->pdata = pdata; |
Tony Lindgren | 53db20d | 2012-10-15 12:10:33 -0700 | [diff] [blame] | 1367 | host->features = host->pdata->slots[0].features; |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 1368 | host->dev = &pdev->dev; |
| 1369 | platform_set_drvdata(pdev, host); |
| 1370 | |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1371 | host->id = pdev->id; |
Tony Lindgren | ce9c1a8 | 2006-07-01 19:56:44 +0100 | [diff] [blame] | 1372 | host->irq = irq; |
Jarkko Nikula | 2ca5dc6 | 2014-02-22 18:01:40 +0200 | [diff] [blame] | 1373 | host->phys_base = res->start; |
Russell King | d4a36645a | 2009-01-23 19:03:37 +0000 | [diff] [blame] | 1374 | host->iclk = clk_get(&pdev->dev, "ick"); |
Jarkko Nikula | 64ac16e | 2014-02-22 18:01:41 +0200 | [diff] [blame] | 1375 | if (IS_ERR(host->iclk)) |
| 1376 | return PTR_ERR(host->iclk); |
Russell King | d4a36645a | 2009-01-23 19:03:37 +0000 | [diff] [blame] | 1377 | clk_enable(host->iclk); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1378 | |
Russell King | 5c9e02b | 2009-01-19 20:53:30 +0000 | [diff] [blame] | 1379 | host->fclk = clk_get(&pdev->dev, "fck"); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1380 | if (IS_ERR(host->fclk)) { |
| 1381 | ret = PTR_ERR(host->fclk); |
Juha Yrjola juha.yrjola | 81ca703 | 2006-11-11 23:39:20 +0100 | [diff] [blame] | 1382 | goto err_free_iclk; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1383 | } |
| 1384 | |
Russell King | 3451c06 | 2012-04-21 22:35:42 +0100 | [diff] [blame] | 1385 | host->dma_tx_burst = -1; |
| 1386 | host->dma_rx_burst = -1; |
| 1387 | |
Peter Ujfalusi | d15b08f | 2016-05-04 11:23:08 +0300 | [diff] [blame] | 1388 | host->dma_tx = dma_request_chan(&pdev->dev, "tx"); |
| 1389 | if (IS_ERR(host->dma_tx)) { |
| 1390 | ret = PTR_ERR(host->dma_tx); |
| 1391 | if (ret == -EPROBE_DEFER) { |
| 1392 | clk_put(host->fclk); |
| 1393 | goto err_free_iclk; |
| 1394 | } |
Tony Lindgren | 31ee918 | 2013-11-26 15:50:33 -0800 | [diff] [blame] | 1395 | |
Peter Ujfalusi | d15b08f | 2016-05-04 11:23:08 +0300 | [diff] [blame] | 1396 | host->dma_tx = NULL; |
| 1397 | dev_warn(host->dev, "TX DMA channel request failed\n"); |
| 1398 | } |
| 1399 | |
| 1400 | host->dma_rx = dma_request_chan(&pdev->dev, "rx"); |
| 1401 | if (IS_ERR(host->dma_rx)) { |
| 1402 | ret = PTR_ERR(host->dma_rx); |
| 1403 | if (ret == -EPROBE_DEFER) { |
| 1404 | if (host->dma_tx) |
| 1405 | dma_release_channel(host->dma_tx); |
| 1406 | clk_put(host->fclk); |
| 1407 | goto err_free_iclk; |
| 1408 | } |
| 1409 | |
| 1410 | host->dma_rx = NULL; |
| 1411 | dev_warn(host->dev, "RX DMA channel request failed\n"); |
| 1412 | } |
Russell King | 3451c06 | 2012-04-21 22:35:42 +0100 | [diff] [blame] | 1413 | |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1414 | ret = request_irq(host->irq, mmc_omap_irq, 0, DRIVER_NAME, host); |
| 1415 | if (ret) |
Russell King | 3451c06 | 2012-04-21 22:35:42 +0100 | [diff] [blame] | 1416 | goto err_free_dma; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1417 | |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 1418 | if (pdata->init != NULL) { |
| 1419 | ret = pdata->init(&pdev->dev); |
| 1420 | if (ret < 0) |
| 1421 | goto err_free_irq; |
| 1422 | } |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1423 | |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 1424 | host->nr_slots = pdata->nr_slots; |
Tony Lindgren | 53db20d | 2012-10-15 12:10:33 -0700 | [diff] [blame] | 1425 | host->reg_shift = (mmc_omap7xx() ? 1 : 2); |
Tony Lindgren | 3caf414 | 2012-06-06 09:45:50 -0400 | [diff] [blame] | 1426 | |
| 1427 | host->mmc_omap_wq = alloc_workqueue("mmc_omap", 0, 0); |
Julia Lawall | 38276a9 | 2015-08-23 02:11:12 +0200 | [diff] [blame] | 1428 | if (!host->mmc_omap_wq) { |
| 1429 | ret = -ENOMEM; |
Tony Lindgren | 3caf414 | 2012-06-06 09:45:50 -0400 | [diff] [blame] | 1430 | goto err_plat_cleanup; |
Julia Lawall | 38276a9 | 2015-08-23 02:11:12 +0200 | [diff] [blame] | 1431 | } |
Tony Lindgren | 3caf414 | 2012-06-06 09:45:50 -0400 | [diff] [blame] | 1432 | |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 1433 | for (i = 0; i < pdata->nr_slots; i++) { |
| 1434 | ret = mmc_omap_new_slot(host, i); |
| 1435 | if (ret < 0) { |
| 1436 | while (--i >= 0) |
| 1437 | mmc_omap_remove_slot(host->slots[i]); |
| 1438 | |
Tony Lindgren | 3caf414 | 2012-06-06 09:45:50 -0400 | [diff] [blame] | 1439 | goto err_destroy_wq; |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 1440 | } |
| 1441 | } |
Juha Yrjola juha.yrjola | 81ca703 | 2006-11-11 23:39:20 +0100 | [diff] [blame] | 1442 | |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1443 | return 0; |
| 1444 | |
Tony Lindgren | 3caf414 | 2012-06-06 09:45:50 -0400 | [diff] [blame] | 1445 | err_destroy_wq: |
| 1446 | destroy_workqueue(host->mmc_omap_wq); |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 1447 | err_plat_cleanup: |
| 1448 | if (pdata->cleanup) |
| 1449 | pdata->cleanup(&pdev->dev); |
| 1450 | err_free_irq: |
| 1451 | free_irq(host->irq, host); |
Russell King | 3451c06 | 2012-04-21 22:35:42 +0100 | [diff] [blame] | 1452 | err_free_dma: |
| 1453 | if (host->dma_tx) |
| 1454 | dma_release_channel(host->dma_tx); |
| 1455 | if (host->dma_rx) |
| 1456 | dma_release_channel(host->dma_rx); |
Juha Yrjola juha.yrjola | 81ca703 | 2006-11-11 23:39:20 +0100 | [diff] [blame] | 1457 | clk_put(host->fclk); |
| 1458 | err_free_iclk: |
Ladislav Michl | e799acb | 2009-12-14 18:01:24 -0800 | [diff] [blame] | 1459 | clk_disable(host->iclk); |
| 1460 | clk_put(host->iclk); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1461 | return ret; |
| 1462 | } |
| 1463 | |
Bill Pemberton | 6e0ee71 | 2012-11-19 13:26:03 -0500 | [diff] [blame] | 1464 | static int mmc_omap_remove(struct platform_device *pdev) |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1465 | { |
| 1466 | struct mmc_omap_host *host = platform_get_drvdata(pdev); |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 1467 | int i; |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1468 | |
Juha Yrjola juha.yrjola | 81ca703 | 2006-11-11 23:39:20 +0100 | [diff] [blame] | 1469 | BUG_ON(host == NULL); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1470 | |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 1471 | for (i = 0; i < host->nr_slots; i++) |
| 1472 | mmc_omap_remove_slot(host->slots[i]); |
Juha Yrjola juha.yrjola | 81ca703 | 2006-11-11 23:39:20 +0100 | [diff] [blame] | 1473 | |
Juha Yrjola | abfbe5f | 2008-03-26 16:08:57 -0400 | [diff] [blame] | 1474 | if (host->pdata->cleanup) |
| 1475 | host->pdata->cleanup(&pdev->dev); |
| 1476 | |
Russell King | d4a36645a | 2009-01-23 19:03:37 +0000 | [diff] [blame] | 1477 | mmc_omap_fclk_enable(host, 0); |
Ladislav Michl | 49c1d9d | 2009-11-11 14:26:43 -0800 | [diff] [blame] | 1478 | free_irq(host->irq, host); |
Russell King | d4a36645a | 2009-01-23 19:03:37 +0000 | [diff] [blame] | 1479 | clk_put(host->fclk); |
| 1480 | clk_disable(host->iclk); |
| 1481 | clk_put(host->iclk); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1482 | |
Russell King | 3451c06 | 2012-04-21 22:35:42 +0100 | [diff] [blame] | 1483 | if (host->dma_tx) |
| 1484 | dma_release_channel(host->dma_tx); |
| 1485 | if (host->dma_rx) |
| 1486 | dma_release_channel(host->dma_rx); |
| 1487 | |
Venkatraman S | b01a4f1 | 2012-05-08 17:05:33 +0530 | [diff] [blame] | 1488 | destroy_workqueue(host->mmc_omap_wq); |
Juha Yrjola juha.yrjola | 81ca703 | 2006-11-11 23:39:20 +0100 | [diff] [blame] | 1489 | |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1490 | return 0; |
| 1491 | } |
| 1492 | |
Tony Lindgren | 9cb238c | 2013-11-26 15:50:33 -0800 | [diff] [blame] | 1493 | #if IS_BUILTIN(CONFIG_OF) |
| 1494 | static const struct of_device_id mmc_omap_match[] = { |
| 1495 | { .compatible = "ti,omap2420-mmc", }, |
| 1496 | { }, |
| 1497 | }; |
Luis de Bethencourt | b73f34c | 2015-09-17 23:50:25 +0200 | [diff] [blame] | 1498 | MODULE_DEVICE_TABLE(of, mmc_omap_match); |
Tony Lindgren | 9cb238c | 2013-11-26 15:50:33 -0800 | [diff] [blame] | 1499 | #endif |
| 1500 | |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1501 | static struct platform_driver mmc_omap_driver = { |
Venkatraman S | b6e0703 | 2012-05-08 17:05:34 +0530 | [diff] [blame] | 1502 | .probe = mmc_omap_probe, |
Bill Pemberton | 0433c14 | 2012-11-19 13:20:26 -0500 | [diff] [blame] | 1503 | .remove = mmc_omap_remove, |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1504 | .driver = { |
| 1505 | .name = DRIVER_NAME, |
Douglas Anderson | 21b2cec | 2020-09-03 16:24:36 -0700 | [diff] [blame] | 1506 | .probe_type = PROBE_PREFER_ASYNCHRONOUS, |
Tony Lindgren | 9cb238c | 2013-11-26 15:50:33 -0800 | [diff] [blame] | 1507 | .of_match_table = of_match_ptr(mmc_omap_match), |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1508 | }, |
| 1509 | }; |
| 1510 | |
Venkatraman S | 680f1b5 | 2012-05-08 17:05:35 +0530 | [diff] [blame] | 1511 | module_platform_driver(mmc_omap_driver); |
Carlos Aguiar | 730c9b7 | 2006-03-29 09:21:00 +0100 | [diff] [blame] | 1512 | MODULE_DESCRIPTION("OMAP Multimedia Card driver"); |
| 1513 | MODULE_LICENSE("GPL"); |
Kay Sievers | bc65c72 | 2008-04-15 14:34:28 -0700 | [diff] [blame] | 1514 | MODULE_ALIAS("platform:" DRIVER_NAME); |
Al Viro | d36b691 | 2011-12-29 17:09:01 -0500 | [diff] [blame] | 1515 | MODULE_AUTHOR("Juha Yrjölä"); |