Lines Matching +full:mmc +full:- +full:slot
1 // SPDX-License-Identifier: GPL-2.0-only
3 * linux/drivers/mmc/host/omap.c
18 #include <linux/dma-mapping.h>
23 #include <linux/mmc/host.h>
24 #include <linux/mmc/card.h>
25 #include <linux/mmc/mmc.h>
30 #include <linux/platform_data/mmc-omap.h>
74 #define mmc_omap7xx() (host->features & MMC_OMAP7XX)
75 #define mmc_omap15xx() (host->features & MMC_OMAP15XX)
76 #define mmc_omap16xx() (host->features & MMC_OMAP16XX)
78 #define mmc_omap1() (host->features & MMC_OMAP1_MASK)
81 #define OMAP_MMC_REG(host, reg) (OMAP_MMC_REG_##reg << (host)->reg_shift)
82 #define OMAP_MMC_READ(host, reg) __raw_readw((host)->virt_base + OMAP_MMC_REG(host, reg))
83 #define OMAP_MMC_WRITE(host, reg, val) __raw_writew((val), (host)->virt_base + OMAP_MMC_REG(host, r…
93 #define DRIVER_NAME "mmci-omap"
115 struct mmc_host *mmc; member
127 struct mmc_host * mmc; member
129 unsigned char id; /* 16xx chips have 2 MMC blocks */
176 static void mmc_omap_fclk_offdelay(struct mmc_omap_slot *slot) in mmc_omap_fclk_offdelay() argument
180 if (slot != NULL && slot->host->fclk_enabled && slot->fclk_freq > 0) { in mmc_omap_fclk_offdelay()
181 tick_ns = DIV_ROUND_UP(NSEC_PER_SEC, slot->fclk_freq); in mmc_omap_fclk_offdelay()
190 spin_lock_irqsave(&host->clk_lock, flags); in mmc_omap_fclk_enable()
191 if (host->fclk_enabled != enable) { in mmc_omap_fclk_enable()
192 host->fclk_enabled = enable; in mmc_omap_fclk_enable()
194 clk_enable(host->fclk); in mmc_omap_fclk_enable()
196 clk_disable(host->fclk); in mmc_omap_fclk_enable()
198 spin_unlock_irqrestore(&host->clk_lock, flags); in mmc_omap_fclk_enable()
201 static void mmc_omap_select_slot(struct mmc_omap_slot *slot, int claimed) in mmc_omap_select_slot() argument
203 struct mmc_omap_host *host = slot->host; in mmc_omap_select_slot()
208 spin_lock_irqsave(&host->slot_lock, flags); in mmc_omap_select_slot()
209 while (host->mmc != NULL) { in mmc_omap_select_slot()
210 spin_unlock_irqrestore(&host->slot_lock, flags); in mmc_omap_select_slot()
211 wait_event(host->slot_wq, host->mmc == NULL); in mmc_omap_select_slot()
212 spin_lock_irqsave(&host->slot_lock, flags); in mmc_omap_select_slot()
214 host->mmc = slot->mmc; in mmc_omap_select_slot()
215 spin_unlock_irqrestore(&host->slot_lock, flags); in mmc_omap_select_slot()
217 del_timer(&host->clk_timer); in mmc_omap_select_slot()
218 if (host->current_slot != slot || !claimed) in mmc_omap_select_slot()
219 mmc_omap_fclk_offdelay(host->current_slot); in mmc_omap_select_slot()
221 if (host->current_slot != slot) { in mmc_omap_select_slot()
222 OMAP_MMC_WRITE(host, CON, slot->saved_con & 0xFC00); in mmc_omap_select_slot()
223 if (host->slot_switch) in mmc_omap_select_slot()
226 * the GPIO to 0 selects slot ID 0, setting it to 1 in mmc_omap_select_slot()
227 * selects slot ID 1. in mmc_omap_select_slot()
229 gpiod_set_value(host->slot_switch, slot->id); in mmc_omap_select_slot()
230 host->current_slot = slot; in mmc_omap_select_slot()
241 OMAP_MMC_WRITE(host, CON, slot->saved_con); in mmc_omap_select_slot()
253 struct mmc_omap_slot *next_slot = host->next_slot; in mmc_omap_slot_release_work()
256 host->next_slot = NULL; in mmc_omap_slot_release_work()
259 rq = next_slot->mrq; in mmc_omap_slot_release_work()
260 next_slot->mrq = NULL; in mmc_omap_slot_release_work()
264 static void mmc_omap_release_slot(struct mmc_omap_slot *slot, int clk_enabled) in mmc_omap_release_slot() argument
266 struct mmc_omap_host *host = slot->host; in mmc_omap_release_slot()
270 BUG_ON(slot == NULL || host->mmc == NULL); in mmc_omap_release_slot()
274 mod_timer(&host->clk_timer, jiffies + HZ/10); in mmc_omap_release_slot()
276 del_timer(&host->clk_timer); in mmc_omap_release_slot()
277 mmc_omap_fclk_offdelay(slot); in mmc_omap_release_slot()
281 spin_lock_irqsave(&host->slot_lock, flags); in mmc_omap_release_slot()
283 for (i = 0; i < host->nr_slots; i++) { in mmc_omap_release_slot()
286 if (host->slots[i] == NULL || host->slots[i]->mrq == NULL) in mmc_omap_release_slot()
289 BUG_ON(host->next_slot != NULL); in mmc_omap_release_slot()
290 new_slot = host->slots[i]; in mmc_omap_release_slot()
291 /* The current slot should not have a request in queue */ in mmc_omap_release_slot()
292 BUG_ON(new_slot == host->current_slot); in mmc_omap_release_slot()
294 host->next_slot = new_slot; in mmc_omap_release_slot()
295 host->mmc = new_slot->mmc; in mmc_omap_release_slot()
296 spin_unlock_irqrestore(&host->slot_lock, flags); in mmc_omap_release_slot()
297 queue_work(host->mmc_omap_wq, &host->slot_release_work); in mmc_omap_release_slot()
301 host->mmc = NULL; in mmc_omap_release_slot()
302 wake_up(&host->slot_wq); in mmc_omap_release_slot()
303 spin_unlock_irqrestore(&host->slot_lock, flags); in mmc_omap_release_slot()
307 int mmc_omap_cover_is_open(struct mmc_omap_slot *slot) in mmc_omap_cover_is_open() argument
310 if (slot->cover) in mmc_omap_cover_is_open()
311 return gpiod_get_value(slot->cover); in mmc_omap_cover_is_open()
312 if (slot->pdata->get_cover_state) in mmc_omap_cover_is_open()
313 return slot->pdata->get_cover_state(mmc_dev(slot->mmc), in mmc_omap_cover_is_open()
314 slot->id); in mmc_omap_cover_is_open()
322 struct mmc_host *mmc = container_of(dev, struct mmc_host, class_dev); in mmc_omap_show_cover_switch() local
323 struct mmc_omap_slot *slot = mmc_priv(mmc); in mmc_omap_show_cover_switch() local
325 return sprintf(buf, "%s\n", mmc_omap_cover_is_open(slot) ? "open" : in mmc_omap_show_cover_switch()
335 struct mmc_host *mmc = container_of(dev, struct mmc_host, class_dev); in mmc_omap_show_slot_name() local
336 struct mmc_omap_slot *slot = mmc_priv(mmc); in mmc_omap_show_slot_name() local
338 return sprintf(buf, "%s\n", slot->pdata->name); in mmc_omap_show_slot_name()
351 host->cmd = cmd; in mmc_omap_start_command()
372 dev_err(mmc_dev(host->mmc), "Invalid response type: %04x\n", mmc_resp_type(cmd)); in mmc_omap_start_command()
386 cmdreg = cmd->opcode | (resptype << 8) | (cmdtype << 12); in mmc_omap_start_command()
388 if (host->current_slot->bus_mode == MMC_BUSMODE_OPENDRAIN) in mmc_omap_start_command()
391 if (cmd->flags & MMC_RSP_BUSY) in mmc_omap_start_command()
394 if (host->data && !(host->data->flags & MMC_DATA_WRITE)) in mmc_omap_start_command()
397 mod_timer(&host->cmd_abort_timer, jiffies + HZ/2); in mmc_omap_start_command()
400 OMAP_MMC_WRITE(host, ARGL, cmd->arg & 0xffff); in mmc_omap_start_command()
401 OMAP_MMC_WRITE(host, ARGH, cmd->arg >> 16); in mmc_omap_start_command()
407 if (cmd->opcode == MMC_ERASE) in mmc_omap_start_command()
418 struct device *dev = mmc_dev(host->mmc); in mmc_omap_release_dma()
421 if (data->flags & MMC_DATA_WRITE) { in mmc_omap_release_dma()
423 c = host->dma_tx; in mmc_omap_release_dma()
426 c = host->dma_rx; in mmc_omap_release_dma()
429 if (data->error) { in mmc_omap_release_dma()
432 data->bytes_xfered = 0; in mmc_omap_release_dma()
434 dev = c->device->dev; in mmc_omap_release_dma()
436 dma_unmap_sg(dev, data->sg, host->sg_len, dma_data_dir); in mmc_omap_release_dma()
443 struct mmc_omap_slot *slot = host->current_slot; in mmc_omap_send_stop_work() local
444 struct mmc_data *data = host->stop_data; in mmc_omap_send_stop_work()
447 tick_ns = DIV_ROUND_UP(NSEC_PER_SEC, slot->fclk_freq); in mmc_omap_send_stop_work()
450 mmc_omap_start_command(host, data->stop); in mmc_omap_send_stop_work()
456 if (host->dma_in_use) in mmc_omap_xfer_done()
457 mmc_omap_release_dma(host, data, data->error); in mmc_omap_xfer_done()
459 sg_miter_stop(&host->sg_miter); in mmc_omap_xfer_done()
461 host->data = NULL; in mmc_omap_xfer_done()
462 host->sg_len = 0; in mmc_omap_xfer_done()
464 /* NOTE: MMC layer will sometimes poll-wait CMD13 next, issuing in mmc_omap_xfer_done()
469 if (!data->stop) { in mmc_omap_xfer_done()
470 struct mmc_host *mmc; in mmc_omap_xfer_done() local
472 host->mrq = NULL; in mmc_omap_xfer_done()
473 mmc = host->mmc; in mmc_omap_xfer_done()
474 mmc_omap_release_slot(host->current_slot, 1); in mmc_omap_xfer_done()
475 mmc_request_done(mmc, data->mrq); in mmc_omap_xfer_done()
479 host->stop_data = data; in mmc_omap_xfer_done()
480 queue_work(host->mmc_omap_wq, &host->send_stop_work); in mmc_omap_xfer_done()
486 struct mmc_omap_slot *slot = host->current_slot; in mmc_omap_send_abort() local
491 timeout = DIV_ROUND_UP(120 * USEC_PER_SEC, slot->fclk_freq); in mmc_omap_send_abort()
515 if (host->dma_in_use) in mmc_omap_abort_xfer()
518 host->data = NULL; in mmc_omap_abort_xfer()
519 host->sg_len = 0; in mmc_omap_abort_xfer()
530 if (!host->dma_in_use) { in mmc_omap_end_of_data()
535 spin_lock_irqsave(&host->dma_lock, flags); in mmc_omap_end_of_data()
536 if (host->dma_done) in mmc_omap_end_of_data()
539 host->brs_received = 1; in mmc_omap_end_of_data()
540 spin_unlock_irqrestore(&host->dma_lock, flags); in mmc_omap_end_of_data()
552 spin_lock_irqsave(&host->dma_lock, flags); in mmc_omap_dma_done()
553 if (host->brs_received) in mmc_omap_dma_done()
556 host->dma_done = 1; in mmc_omap_dma_done()
557 spin_unlock_irqrestore(&host->dma_lock, flags); in mmc_omap_dma_done()
565 host->cmd = NULL; in mmc_omap_cmd_done()
567 del_timer(&host->cmd_abort_timer); in mmc_omap_cmd_done()
569 if (cmd->flags & MMC_RSP_PRESENT) { in mmc_omap_cmd_done()
570 if (cmd->flags & MMC_RSP_136) { in mmc_omap_cmd_done()
572 cmd->resp[3] = in mmc_omap_cmd_done()
575 cmd->resp[2] = in mmc_omap_cmd_done()
578 cmd->resp[1] = in mmc_omap_cmd_done()
581 cmd->resp[0] = in mmc_omap_cmd_done()
586 cmd->resp[0] = in mmc_omap_cmd_done()
592 if (host->data == NULL || cmd->error) { in mmc_omap_cmd_done()
593 struct mmc_host *mmc; in mmc_omap_cmd_done() local
595 if (host->data != NULL) in mmc_omap_cmd_done()
596 mmc_omap_abort_xfer(host, host->data); in mmc_omap_cmd_done()
597 host->mrq = NULL; in mmc_omap_cmd_done()
598 mmc = host->mmc; in mmc_omap_cmd_done()
599 mmc_omap_release_slot(host->current_slot, 1); in mmc_omap_cmd_done()
600 mmc_request_done(mmc, cmd->mrq); in mmc_omap_cmd_done()
612 BUG_ON(!host->cmd); in mmc_omap_abort_command()
614 dev_dbg(mmc_dev(host->mmc), "Aborting stuck command CMD%d\n", in mmc_omap_abort_command()
615 host->cmd->opcode); in mmc_omap_abort_command()
617 if (host->cmd->error == 0) in mmc_omap_abort_command()
618 host->cmd->error = -ETIMEDOUT; in mmc_omap_abort_command()
620 if (host->data == NULL) { in mmc_omap_abort_command()
622 struct mmc_host *mmc; in mmc_omap_abort_command() local
624 cmd = host->cmd; in mmc_omap_abort_command()
625 host->cmd = NULL; in mmc_omap_abort_command()
628 host->mrq = NULL; in mmc_omap_abort_command()
629 mmc = host->mmc; in mmc_omap_abort_command()
630 mmc_omap_release_slot(host->current_slot, 1); in mmc_omap_abort_command()
631 mmc_request_done(mmc, cmd->mrq); in mmc_omap_abort_command()
633 mmc_omap_cmd_done(host, host->cmd); in mmc_omap_abort_command()
635 host->abort = 0; in mmc_omap_abort_command()
636 enable_irq(host->irq); in mmc_omap_abort_command()
645 spin_lock_irqsave(&host->slot_lock, flags); in mmc_omap_cmd_timer()
646 if (host->cmd != NULL && !host->abort) { in mmc_omap_cmd_timer()
648 disable_irq(host->irq); in mmc_omap_cmd_timer()
649 host->abort = 1; in mmc_omap_cmd_timer()
650 queue_work(host->mmc_omap_wq, &host->cmd_abort_work); in mmc_omap_cmd_timer()
652 spin_unlock_irqrestore(&host->slot_lock, flags); in mmc_omap_cmd_timer()
667 struct sg_mapping_iter *sgm = &host->sg_miter; in mmc_omap_xfer_data()
673 dev_err(mmc_dev(host->mmc), "ran out of scatterlist prematurely\n"); in mmc_omap_xfer_data()
676 buffer = sgm->addr; in mmc_omap_xfer_data()
679 if (n > sgm->length) in mmc_omap_xfer_data()
680 n = sgm->length; in mmc_omap_xfer_data()
681 if (n > host->total_bytes_left) in mmc_omap_xfer_data()
682 n = host->total_bytes_left; in mmc_omap_xfer_data()
687 sgm->consumed = n; in mmc_omap_xfer_data()
688 host->total_bytes_left -= n; in mmc_omap_xfer_data()
689 host->data->bytes_xfered += n; in mmc_omap_xfer_data()
692 __raw_writesw(host->virt_base + OMAP_MMC_REG(host, DATA), in mmc_omap_xfer_data()
695 __raw_readsw(host->virt_base + OMAP_MMC_REG(host, DATA), in mmc_omap_xfer_data()
710 buf += sprintf(buf, "MMC IRQ 0x%x:", status); in mmc_omap_report_irq()
715 dev_vdbg(mmc_dev(host->mmc), "%s\n", res); in mmc_omap_report_irq()
732 if (host->cmd == NULL && host->data == NULL) { in mmc_omap_irq()
734 dev_info(mmc_dev(host->slots[0]->mmc), in mmc_omap_irq()
752 if (host->cmd != NULL) in mmc_omap_irq()
753 cmd = host->cmd->opcode; in mmc_omap_irq()
755 cmd = -1; in mmc_omap_irq()
756 dev_dbg(mmc_dev(host->mmc), "MMC IRQ %04x (CMD %d): ", in mmc_omap_irq()
760 if (host->total_bytes_left) { in mmc_omap_irq()
772 dev_dbg(mmc_dev(host->mmc), "data timeout (CMD%d)\n", in mmc_omap_irq()
774 if (host->data) { in mmc_omap_irq()
775 host->data->error = -ETIMEDOUT; in mmc_omap_irq()
781 if (host->data) { in mmc_omap_irq()
782 host->data->error = -EILSEQ; in mmc_omap_irq()
783 dev_dbg(mmc_dev(host->mmc), in mmc_omap_irq()
785 host->total_bytes_left); in mmc_omap_irq()
788 dev_dbg(mmc_dev(host->mmc), "data CRC error\n"); in mmc_omap_irq()
794 if (host->cmd) { in mmc_omap_irq()
795 struct mmc_omap_slot *slot = in mmc_omap_irq() local
796 host->current_slot; in mmc_omap_irq()
797 if (slot == NULL || in mmc_omap_irq()
798 !mmc_omap_cover_is_open(slot)) in mmc_omap_irq()
799 dev_err(mmc_dev(host->mmc), in mmc_omap_irq()
802 host->cmd->error = -ETIMEDOUT; in mmc_omap_irq()
809 if (host->cmd) { in mmc_omap_irq()
810 dev_err(mmc_dev(host->mmc), in mmc_omap_irq()
812 cmd, host->cmd->arg); in mmc_omap_irq()
813 host->cmd->error = -EILSEQ; in mmc_omap_irq()
817 dev_err(mmc_dev(host->mmc), in mmc_omap_irq()
822 dev_dbg(mmc_dev(host->mmc), in mmc_omap_irq()
838 if (cmd_error && host->data) { in mmc_omap_irq()
839 del_timer(&host->cmd_abort_timer); in mmc_omap_irq()
840 host->abort = 1; in mmc_omap_irq()
842 disable_irq_nosync(host->irq); in mmc_omap_irq()
843 queue_work(host->mmc_omap_wq, &host->cmd_abort_work); in mmc_omap_irq()
847 if (end_command && host->cmd) in mmc_omap_irq()
848 mmc_omap_cmd_done(host, host->cmd); in mmc_omap_irq()
849 if (host->data != NULL) { in mmc_omap_irq()
851 mmc_omap_xfer_done(host, host->data); in mmc_omap_irq()
853 mmc_omap_end_of_data(host, host->data); in mmc_omap_irq()
863 struct mmc_omap_slot *slot = host->slots[num]; in omap_mmc_notify_cover_event() local
865 BUG_ON(num >= host->nr_slots); in omap_mmc_notify_cover_event()
868 if (host->nr_slots == 0 || !host->slots[num]) in omap_mmc_notify_cover_event()
871 cover_open = mmc_omap_cover_is_open(slot); in omap_mmc_notify_cover_event()
872 if (cover_open != slot->cover_open) { in omap_mmc_notify_cover_event()
873 slot->cover_open = cover_open; in omap_mmc_notify_cover_event()
874 sysfs_notify(&slot->mmc->class_dev.kobj, NULL, "cover_switch"); in omap_mmc_notify_cover_event()
877 queue_work(system_bh_highpri_wq, &slot->cover_bh_work); in omap_mmc_notify_cover_event()
882 struct mmc_omap_slot *slot = from_timer(slot, t, cover_timer); in mmc_omap_cover_timer() local
883 queue_work(system_bh_wq, &slot->cover_bh_work); in mmc_omap_cover_timer()
888 struct mmc_omap_slot *slot = from_work(slot, t, cover_bh_work); in mmc_omap_cover_bh_handler() local
889 int cover_open = mmc_omap_cover_is_open(slot); in mmc_omap_cover_bh_handler()
891 mmc_detect_change(slot->mmc, 0); in mmc_omap_cover_bh_handler()
899 if (slot->mmc->card == NULL) in mmc_omap_cover_bh_handler()
902 mod_timer(&slot->cover_timer, in mmc_omap_cover_bh_handler()
909 struct mmc_data *data = host->data; in mmc_omap_dma_callback()
912 data->bytes_xfered += data->blocks * data->blksz; in mmc_omap_dma_callback()
933 cycle_ns = 1000000000 / host->current_slot->fclk_freq; in set_data_timeout()
934 timeout = req->data->timeout_ns / cycle_ns; in set_data_timeout()
935 timeout += req->data->timeout_clks; in set_data_timeout()
952 struct mmc_data *data = req->data; in mmc_omap_prepare_data()
957 host->data = data; in mmc_omap_prepare_data()
962 host->dma_in_use = 0; in mmc_omap_prepare_data()
967 block_size = data->blksz; in mmc_omap_prepare_data()
969 OMAP_MMC_WRITE(host, NBLK, data->blocks - 1); in mmc_omap_prepare_data()
970 OMAP_MMC_WRITE(host, BLEN, block_size - 1); in mmc_omap_prepare_data()
974 * block" writes using multi-block scatterlists. in mmc_omap_prepare_data()
976 sg_len = (data->blocks == 1) ? 1 : data->sg_len; in mmc_omap_prepare_data()
979 for_each_sg(data->sg, sg, sg_len, i) { in mmc_omap_prepare_data()
980 if ((sg->length % block_size) != 0) { in mmc_omap_prepare_data()
1000 if (burst > data->blksz) in mmc_omap_prepare_data()
1001 burst = data->blksz; in mmc_omap_prepare_data()
1005 if (data->flags & MMC_DATA_WRITE) { in mmc_omap_prepare_data()
1006 c = host->dma_tx; in mmc_omap_prepare_data()
1007 bp = &host->dma_tx_burst; in mmc_omap_prepare_data()
1008 buf = 0x0f80 | (burst - 1) << 0; in mmc_omap_prepare_data()
1011 c = host->dma_rx; in mmc_omap_prepare_data()
1012 bp = &host->dma_rx_burst; in mmc_omap_prepare_data()
1013 buf = 0x800f | (burst - 1) << 8; in mmc_omap_prepare_data()
1023 .src_addr = host->phys_base + in mmc_omap_prepare_data()
1025 .dst_addr = host->phys_base + in mmc_omap_prepare_data()
1039 host->sg_len = dma_map_sg(c->device->dev, data->sg, sg_len, in mmc_omap_prepare_data()
1041 if (host->sg_len == 0) in mmc_omap_prepare_data()
1044 tx = dmaengine_prep_slave_sg(c, data->sg, host->sg_len, in mmc_omap_prepare_data()
1045 data->flags & MMC_DATA_WRITE ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM, in mmc_omap_prepare_data()
1052 tx->callback = mmc_omap_dma_callback; in mmc_omap_prepare_data()
1053 tx->callback_param = host; in mmc_omap_prepare_data()
1055 host->brs_received = 0; in mmc_omap_prepare_data()
1056 host->dma_done = 0; in mmc_omap_prepare_data()
1057 host->dma_in_use = 1; in mmc_omap_prepare_data()
1064 host->total_bytes_left = data->blocks * block_size; in mmc_omap_prepare_data()
1065 host->sg_len = sg_len; in mmc_omap_prepare_data()
1066 if (data->flags & MMC_DATA_READ) in mmc_omap_prepare_data()
1070 sg_miter_start(&host->sg_miter, data->sg, data->sg_len, miter_flags); in mmc_omap_prepare_data()
1071 host->dma_in_use = 0; in mmc_omap_prepare_data()
1077 BUG_ON(host->mrq != NULL); in mmc_omap_start_request()
1079 host->mrq = req; in mmc_omap_start_request()
1083 mmc_omap_start_command(host, req->cmd); in mmc_omap_start_request()
1084 if (host->dma_in_use) { in mmc_omap_start_request()
1085 struct dma_chan *c = host->data->flags & MMC_DATA_WRITE ? in mmc_omap_start_request()
1086 host->dma_tx : host->dma_rx; in mmc_omap_start_request()
1092 static void mmc_omap_request(struct mmc_host *mmc, struct mmc_request *req) in mmc_omap_request() argument
1094 struct mmc_omap_slot *slot = mmc_priv(mmc); in mmc_omap_request() local
1095 struct mmc_omap_host *host = slot->host; in mmc_omap_request()
1098 spin_lock_irqsave(&host->slot_lock, flags); in mmc_omap_request()
1099 if (host->mmc != NULL) { in mmc_omap_request()
1100 BUG_ON(slot->mrq != NULL); in mmc_omap_request()
1101 slot->mrq = req; in mmc_omap_request()
1102 spin_unlock_irqrestore(&host->slot_lock, flags); in mmc_omap_request()
1105 host->mmc = mmc; in mmc_omap_request()
1106 spin_unlock_irqrestore(&host->slot_lock, flags); in mmc_omap_request()
1107 mmc_omap_select_slot(slot, 1); in mmc_omap_request()
1111 static void mmc_omap_set_power(struct mmc_omap_slot *slot, int power_on, in mmc_omap_set_power() argument
1116 host = slot->host; in mmc_omap_set_power()
1119 if (slot->vsd) { in mmc_omap_set_power()
1120 gpiod_set_value(slot->vsd, power_on); in mmc_omap_set_power()
1123 if (slot->vio) { in mmc_omap_set_power()
1124 gpiod_set_value(slot->vio, power_on); in mmc_omap_set_power()
1128 if (slot->vio) { in mmc_omap_set_power()
1129 gpiod_set_value(slot->vio, power_on); in mmc_omap_set_power()
1132 if (slot->vsd) { in mmc_omap_set_power()
1133 gpiod_set_value(slot->vsd, power_on); in mmc_omap_set_power()
1138 if (slot->pdata->set_power != NULL) in mmc_omap_set_power()
1139 slot->pdata->set_power(mmc_dev(slot->mmc), slot->id, power_on, in mmc_omap_set_power()
1154 static int mmc_omap_calc_divisor(struct mmc_host *mmc, struct mmc_ios *ios) in mmc_omap_calc_divisor() argument
1156 struct mmc_omap_slot *slot = mmc_priv(mmc); in mmc_omap_calc_divisor() local
1157 struct mmc_omap_host *host = slot->host; in mmc_omap_calc_divisor()
1158 int func_clk_rate = clk_get_rate(host->fclk); in mmc_omap_calc_divisor()
1161 if (ios->clock == 0) in mmc_omap_calc_divisor()
1164 dsor = func_clk_rate / ios->clock; in mmc_omap_calc_divisor()
1168 if (func_clk_rate / dsor > ios->clock) in mmc_omap_calc_divisor()
1174 slot->fclk_freq = func_clk_rate / dsor; in mmc_omap_calc_divisor()
1176 if (ios->bus_width == MMC_BUS_WIDTH_4) in mmc_omap_calc_divisor()
1182 static void mmc_omap_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) in mmc_omap_set_ios() argument
1184 struct mmc_omap_slot *slot = mmc_priv(mmc); in mmc_omap_set_ios() local
1185 struct mmc_omap_host *host = slot->host; in mmc_omap_set_ios()
1189 mmc_omap_select_slot(slot, 0); in mmc_omap_set_ios()
1191 dsor = mmc_omap_calc_divisor(mmc, ios); in mmc_omap_set_ios()
1193 if (ios->vdd != slot->vdd) in mmc_omap_set_ios()
1194 slot->vdd = ios->vdd; in mmc_omap_set_ios()
1198 switch (ios->power_mode) { in mmc_omap_set_ios()
1200 mmc_omap_set_power(slot, 0, ios->vdd); in mmc_omap_set_ios()
1203 /* Cannot touch dsor yet, just power up MMC */ in mmc_omap_set_ios()
1204 mmc_omap_set_power(slot, 1, ios->vdd); in mmc_omap_set_ios()
1205 slot->power_mode = ios->power_mode; in mmc_omap_set_ios()
1211 if (slot->power_mode != MMC_POWER_ON) in mmc_omap_set_ios()
1215 slot->power_mode = ios->power_mode; in mmc_omap_set_ios()
1217 if (slot->bus_mode != ios->bus_mode) { in mmc_omap_set_ios()
1218 if (slot->pdata->set_bus_mode != NULL) in mmc_omap_set_ios()
1219 slot->pdata->set_bus_mode(mmc_dev(mmc), slot->id, in mmc_omap_set_ios()
1220 ios->bus_mode); in mmc_omap_set_ios()
1221 slot->bus_mode = ios->bus_mode; in mmc_omap_set_ios()
1230 slot->saved_con = dsor; in mmc_omap_set_ios()
1241 usecs--; in mmc_omap_set_ios()
1247 mmc_omap_release_slot(slot, clk_enabled); in mmc_omap_set_ios()
1257 struct mmc_omap_slot *slot = NULL; in mmc_omap_new_slot() local
1258 struct mmc_host *mmc; in mmc_omap_new_slot() local
1261 mmc = mmc_alloc_host(sizeof(struct mmc_omap_slot), host->dev); in mmc_omap_new_slot()
1262 if (mmc == NULL) in mmc_omap_new_slot()
1263 return -ENOMEM; in mmc_omap_new_slot()
1265 slot = mmc_priv(mmc); in mmc_omap_new_slot()
1266 slot->host = host; in mmc_omap_new_slot()
1267 slot->mmc = mmc; in mmc_omap_new_slot()
1268 slot->id = id; in mmc_omap_new_slot()
1269 slot->power_mode = MMC_POWER_UNDEFINED; in mmc_omap_new_slot()
1270 slot->pdata = &host->pdata->slots[id]; in mmc_omap_new_slot()
1273 slot->vsd = devm_gpiod_get_index_optional(host->dev, "vsd", in mmc_omap_new_slot()
1275 if (IS_ERR(slot->vsd)) { in mmc_omap_new_slot()
1276 r = dev_err_probe(host->dev, PTR_ERR(slot->vsd), in mmc_omap_new_slot()
1280 slot->vio = devm_gpiod_get_index_optional(host->dev, "vio", in mmc_omap_new_slot()
1282 if (IS_ERR(slot->vio)) { in mmc_omap_new_slot()
1283 r = dev_err_probe(host->dev, PTR_ERR(slot->vio), in mmc_omap_new_slot()
1287 slot->cover = devm_gpiod_get_index_optional(host->dev, "cover", in mmc_omap_new_slot()
1289 if (IS_ERR(slot->cover)) { in mmc_omap_new_slot()
1290 r = dev_err_probe(host->dev, PTR_ERR(slot->cover), in mmc_omap_new_slot()
1295 host->slots[id] = slot; in mmc_omap_new_slot()
1297 mmc->caps = 0; in mmc_omap_new_slot()
1298 if (host->pdata->slots[id].wires >= 4) in mmc_omap_new_slot()
1299 mmc->caps |= MMC_CAP_4_BIT_DATA; in mmc_omap_new_slot()
1301 mmc->ops = &mmc_omap_ops; in mmc_omap_new_slot()
1302 mmc->f_min = 400000; in mmc_omap_new_slot()
1305 mmc->f_max = 48000000; in mmc_omap_new_slot()
1307 mmc->f_max = 24000000; in mmc_omap_new_slot()
1308 if (host->pdata->max_freq) in mmc_omap_new_slot()
1309 mmc->f_max = min(host->pdata->max_freq, mmc->f_max); in mmc_omap_new_slot()
1310 mmc->ocr_avail = slot->pdata->ocr_mask; in mmc_omap_new_slot()
1312 /* Use scatterlist DMA to reduce per-transfer costs. in mmc_omap_new_slot()
1316 mmc->max_segs = 32; in mmc_omap_new_slot()
1317 mmc->max_blk_size = 2048; /* BLEN is 11 bits (+1) */ in mmc_omap_new_slot()
1318 mmc->max_blk_count = 2048; /* NBLK is 11 bits (+1) */ in mmc_omap_new_slot()
1319 mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count; in mmc_omap_new_slot()
1320 mmc->max_seg_size = mmc->max_req_size; in mmc_omap_new_slot()
1322 if (slot->pdata->get_cover_state != NULL) { in mmc_omap_new_slot()
1323 timer_setup(&slot->cover_timer, mmc_omap_cover_timer, 0); in mmc_omap_new_slot()
1324 INIT_WORK(&slot->cover_bh_work, mmc_omap_cover_bh_handler); in mmc_omap_new_slot()
1327 r = mmc_add_host(mmc); in mmc_omap_new_slot()
1331 if (slot->pdata->name != NULL) { in mmc_omap_new_slot()
1332 r = device_create_file(&mmc->class_dev, in mmc_omap_new_slot()
1338 if (slot->pdata->get_cover_state != NULL) { in mmc_omap_new_slot()
1339 r = device_create_file(&mmc->class_dev, in mmc_omap_new_slot()
1343 queue_work(system_bh_wq, &slot->cover_bh_work); in mmc_omap_new_slot()
1349 if (slot->pdata->name != NULL) in mmc_omap_new_slot()
1350 device_remove_file(&mmc->class_dev, &dev_attr_slot_name); in mmc_omap_new_slot()
1352 mmc_remove_host(mmc); in mmc_omap_new_slot()
1354 mmc_free_host(mmc); in mmc_omap_new_slot()
1358 static void mmc_omap_remove_slot(struct mmc_omap_slot *slot) in mmc_omap_remove_slot() argument
1360 struct mmc_host *mmc = slot->mmc; in mmc_omap_remove_slot() local
1362 if (slot->pdata->name != NULL) in mmc_omap_remove_slot()
1363 device_remove_file(&mmc->class_dev, &dev_attr_slot_name); in mmc_omap_remove_slot()
1364 if (slot->pdata->get_cover_state != NULL) in mmc_omap_remove_slot()
1365 device_remove_file(&mmc->class_dev, &dev_attr_cover_switch); in mmc_omap_remove_slot()
1367 cancel_work_sync(&slot->cover_bh_work); in mmc_omap_remove_slot()
1368 del_timer_sync(&slot->cover_timer); in mmc_omap_remove_slot()
1369 flush_workqueue(slot->host->mmc_omap_wq); in mmc_omap_remove_slot()
1371 mmc_remove_host(mmc); in mmc_omap_remove_slot()
1372 mmc_free_host(mmc); in mmc_omap_remove_slot()
1377 struct omap_mmc_platform_data *pdata = pdev->dev.platform_data; in mmc_omap_probe()
1384 dev_err(&pdev->dev, "platform data missing\n"); in mmc_omap_probe()
1385 return -ENXIO; in mmc_omap_probe()
1387 if (pdata->nr_slots == 0) { in mmc_omap_probe()
1388 dev_err(&pdev->dev, "no slots\n"); in mmc_omap_probe()
1389 return -EPROBE_DEFER; in mmc_omap_probe()
1392 host = devm_kzalloc(&pdev->dev, sizeof(struct mmc_omap_host), in mmc_omap_probe()
1395 return -ENOMEM; in mmc_omap_probe()
1401 host->virt_base = devm_platform_get_and_ioremap_resource(pdev, 0, &res); in mmc_omap_probe()
1402 if (IS_ERR(host->virt_base)) in mmc_omap_probe()
1403 return PTR_ERR(host->virt_base); in mmc_omap_probe()
1405 INIT_WORK(&host->slot_release_work, mmc_omap_slot_release_work); in mmc_omap_probe()
1406 INIT_WORK(&host->send_stop_work, mmc_omap_send_stop_work); in mmc_omap_probe()
1408 INIT_WORK(&host->cmd_abort_work, mmc_omap_abort_command); in mmc_omap_probe()
1409 timer_setup(&host->cmd_abort_timer, mmc_omap_cmd_timer, 0); in mmc_omap_probe()
1411 spin_lock_init(&host->clk_lock); in mmc_omap_probe()
1412 timer_setup(&host->clk_timer, mmc_omap_clk_timer, 0); in mmc_omap_probe()
1414 spin_lock_init(&host->dma_lock); in mmc_omap_probe()
1415 spin_lock_init(&host->slot_lock); in mmc_omap_probe()
1416 init_waitqueue_head(&host->slot_wq); in mmc_omap_probe()
1418 host->pdata = pdata; in mmc_omap_probe()
1419 host->features = host->pdata->slots[0].features; in mmc_omap_probe()
1420 host->dev = &pdev->dev; in mmc_omap_probe()
1423 host->slot_switch = devm_gpiod_get_optional(host->dev, "switch", in mmc_omap_probe()
1425 if (IS_ERR(host->slot_switch)) in mmc_omap_probe()
1426 return dev_err_probe(host->dev, PTR_ERR(host->slot_switch), in mmc_omap_probe()
1427 "error looking up slot switch GPIO\n"); in mmc_omap_probe()
1429 host->id = pdev->id; in mmc_omap_probe()
1430 host->irq = irq; in mmc_omap_probe()
1431 host->phys_base = res->start; in mmc_omap_probe()
1432 host->iclk = clk_get(&pdev->dev, "ick"); in mmc_omap_probe()
1433 if (IS_ERR(host->iclk)) in mmc_omap_probe()
1434 return PTR_ERR(host->iclk); in mmc_omap_probe()
1435 clk_prepare_enable(host->iclk); in mmc_omap_probe()
1437 host->fclk = clk_get(&pdev->dev, "fck"); in mmc_omap_probe()
1438 if (IS_ERR(host->fclk)) { in mmc_omap_probe()
1439 ret = PTR_ERR(host->fclk); in mmc_omap_probe()
1443 ret = clk_prepare(host->fclk); in mmc_omap_probe()
1447 host->dma_tx_burst = -1; in mmc_omap_probe()
1448 host->dma_rx_burst = -1; in mmc_omap_probe()
1450 host->dma_tx = dma_request_chan(&pdev->dev, "tx"); in mmc_omap_probe()
1451 if (IS_ERR(host->dma_tx)) { in mmc_omap_probe()
1452 ret = PTR_ERR(host->dma_tx); in mmc_omap_probe()
1453 if (ret == -EPROBE_DEFER) in mmc_omap_probe()
1456 host->dma_tx = NULL; in mmc_omap_probe()
1457 dev_warn(host->dev, "TX DMA channel request failed\n"); in mmc_omap_probe()
1460 host->dma_rx = dma_request_chan(&pdev->dev, "rx"); in mmc_omap_probe()
1461 if (IS_ERR(host->dma_rx)) { in mmc_omap_probe()
1462 ret = PTR_ERR(host->dma_rx); in mmc_omap_probe()
1463 if (ret == -EPROBE_DEFER) { in mmc_omap_probe()
1464 if (host->dma_tx) in mmc_omap_probe()
1465 dma_release_channel(host->dma_tx); in mmc_omap_probe()
1469 host->dma_rx = NULL; in mmc_omap_probe()
1470 dev_warn(host->dev, "RX DMA channel request failed\n"); in mmc_omap_probe()
1473 ret = request_irq(host->irq, mmc_omap_irq, 0, DRIVER_NAME, host); in mmc_omap_probe()
1477 if (pdata->init != NULL) { in mmc_omap_probe()
1478 ret = pdata->init(&pdev->dev); in mmc_omap_probe()
1483 host->nr_slots = pdata->nr_slots; in mmc_omap_probe()
1484 host->reg_shift = (mmc_omap7xx() ? 1 : 2); in mmc_omap_probe()
1486 host->mmc_omap_wq = alloc_workqueue("mmc_omap", 0, 0); in mmc_omap_probe()
1487 if (!host->mmc_omap_wq) { in mmc_omap_probe()
1488 ret = -ENOMEM; in mmc_omap_probe()
1492 for (i = 0; i < pdata->nr_slots; i++) { in mmc_omap_probe()
1495 while (--i >= 0) in mmc_omap_probe()
1496 mmc_omap_remove_slot(host->slots[i]); in mmc_omap_probe()
1505 destroy_workqueue(host->mmc_omap_wq); in mmc_omap_probe()
1507 if (pdata->cleanup) in mmc_omap_probe()
1508 pdata->cleanup(&pdev->dev); in mmc_omap_probe()
1510 free_irq(host->irq, host); in mmc_omap_probe()
1512 if (host->dma_tx) in mmc_omap_probe()
1513 dma_release_channel(host->dma_tx); in mmc_omap_probe()
1514 if (host->dma_rx) in mmc_omap_probe()
1515 dma_release_channel(host->dma_rx); in mmc_omap_probe()
1517 clk_unprepare(host->fclk); in mmc_omap_probe()
1519 clk_put(host->fclk); in mmc_omap_probe()
1521 clk_disable_unprepare(host->iclk); in mmc_omap_probe()
1522 clk_put(host->iclk); in mmc_omap_probe()
1533 for (i = 0; i < host->nr_slots; i++) in mmc_omap_remove()
1534 mmc_omap_remove_slot(host->slots[i]); in mmc_omap_remove()
1536 if (host->pdata->cleanup) in mmc_omap_remove()
1537 host->pdata->cleanup(&pdev->dev); in mmc_omap_remove()
1540 free_irq(host->irq, host); in mmc_omap_remove()
1541 clk_unprepare(host->fclk); in mmc_omap_remove()
1542 clk_put(host->fclk); in mmc_omap_remove()
1543 clk_disable_unprepare(host->iclk); in mmc_omap_remove()
1544 clk_put(host->iclk); in mmc_omap_remove()
1546 if (host->dma_tx) in mmc_omap_remove()
1547 dma_release_channel(host->dma_tx); in mmc_omap_remove()
1548 if (host->dma_rx) in mmc_omap_remove()
1549 dma_release_channel(host->dma_rx); in mmc_omap_remove()
1551 destroy_workqueue(host->mmc_omap_wq); in mmc_omap_remove()
1556 { .compatible = "ti,omap2420-mmc", },