1 // SPDX-License-Identifier: GPL-2.0+
3  * Copyright (C) 2018 Oleksij Rempel <linux@rempel-privat.de>
10  * As soon as some one with documentation or more experience in SD/MMC, or
12  * thing what I did. 2018 Oleksij Rempel <linux@rempel-privat.de>
25 #include <linux/mmc/host.h>
26 #include <linux/mmc/mmc.h>
73 static inline void alcor_rmw8(struct alcor_sdmmc_host *host, unsigned int addr,  in alcor_rmw8()  argument
76 	struct alcor_pci_priv *priv = host->alcor_pci;  in alcor_rmw8()
88 static inline void alcor_mask_sd_irqs(struct alcor_sdmmc_host *host)  in alcor_mask_sd_irqs()  argument
90 	struct alcor_pci_priv *priv = host->alcor_pci;  in alcor_mask_sd_irqs()
95 static inline void alcor_unmask_sd_irqs(struct alcor_sdmmc_host *host)  in alcor_unmask_sd_irqs()  argument
97 	struct alcor_pci_priv *priv = host->alcor_pci;  in alcor_unmask_sd_irqs()
105 static void alcor_reset(struct alcor_sdmmc_host *host, u8 val)  in alcor_reset()  argument
107 	struct alcor_pci_priv *priv = host->alcor_pci;  in alcor_reset()
117 	dev_err(host->dev, "%s: timeout\n", __func__);  in alcor_reset()
123 static void alcor_data_set_dma(struct alcor_sdmmc_host *host)  in alcor_data_set_dma()  argument
125 	struct alcor_pci_priv *priv = host->alcor_pci;  in alcor_data_set_dma()
128 	if (!host->sg_count)  in alcor_data_set_dma()
131 	if (!host->sg) {  in alcor_data_set_dma()
132 		dev_err(host->dev, "have blocks, but no SG\n");  in alcor_data_set_dma()
136 	if (!sg_dma_len(host->sg)) {  in alcor_data_set_dma()
137 		dev_err(host->dev, "DMA SG len == 0\n");  in alcor_data_set_dma()
142 	addr = (u32)sg_dma_address(host->sg);  in alcor_data_set_dma()
145 	host->sg = sg_next(host->sg);  in alcor_data_set_dma()
146 	host->sg_count--;  in alcor_data_set_dma()
149 static void alcor_trigger_data_transfer(struct alcor_sdmmc_host *host)  in alcor_trigger_data_transfer()  argument
151 	struct alcor_pci_priv *priv = host->alcor_pci;  in alcor_trigger_data_transfer()
152 	struct mmc_data *data = host->data;  in alcor_trigger_data_transfer()
155 	if (data->flags & MMC_DATA_WRITE)  in alcor_trigger_data_transfer()
158 	if (data->host_cookie == COOKIE_MAPPED) {  in alcor_trigger_data_transfer()
165 		 * indicating that the single-page DMA was completed.  in alcor_trigger_data_transfer()
167 		alcor_data_set_dma(host);  in alcor_trigger_data_transfer()
169 		host->dma_on = 1;  in alcor_trigger_data_transfer()
170 		alcor_write32(priv, data->sg_count * 0x1000,  in alcor_trigger_data_transfer()
175 		 * into several sector-sized transfers. When one sector has  in alcor_trigger_data_transfer()
179 		alcor_write32(priv, data->blksz, AU6601_REG_BLOCK_SIZE);  in alcor_trigger_data_transfer()
186 static void alcor_trf_block_pio(struct alcor_sdmmc_host *host, bool read)  in alcor_trf_block_pio()  argument
188 	struct alcor_pci_priv *priv = host->alcor_pci;  in alcor_trf_block_pio()
192 	if (!host->blocks)  in alcor_trf_block_pio()
195 	if (host->dma_on) {  in alcor_trf_block_pio()
196 		dev_err(host->dev, "configured DMA but got PIO request.\n");  in alcor_trf_block_pio()
200 	if (!!(host->data->flags & MMC_DATA_READ) != read) {  in alcor_trf_block_pio()
201 		dev_err(host->dev, "got unexpected direction %i != %i\n",  in alcor_trf_block_pio()
202 			!!(host->data->flags & MMC_DATA_READ), read);  in alcor_trf_block_pio()
205 	if (!sg_miter_next(&host->sg_miter))  in alcor_trf_block_pio()
208 	blksize = host->data->blksz;  in alcor_trf_block_pio()
209 	len = min(host->sg_miter.length, blksize);  in alcor_trf_block_pio()
211 	dev_dbg(host->dev, "PIO, %s block size: 0x%zx\n",  in alcor_trf_block_pio()
214 	host->sg_miter.consumed = len;  in alcor_trf_block_pio()
215 	host->blocks--;  in alcor_trf_block_pio()
217 	buf = host->sg_miter.addr;  in alcor_trf_block_pio()
220 		ioread32_rep(priv->iobase + AU6601_REG_BUFFER, buf, len >> 2);  in alcor_trf_block_pio()
222 		iowrite32_rep(priv->iobase + AU6601_REG_BUFFER, buf, len >> 2);  in alcor_trf_block_pio()
224 	sg_miter_stop(&host->sg_miter);  in alcor_trf_block_pio()
227 static void alcor_prepare_sg_miter(struct alcor_sdmmc_host *host)  in alcor_prepare_sg_miter()  argument
230 	struct mmc_data *data = host->data;  in alcor_prepare_sg_miter()
232 	if (data->flags & MMC_DATA_READ)  in alcor_prepare_sg_miter()
236 	sg_miter_start(&host->sg_miter, data->sg, data->sg_len, flags);  in alcor_prepare_sg_miter()
239 static void alcor_prepare_data(struct alcor_sdmmc_host *host,  in alcor_prepare_data()  argument
242 	struct alcor_pci_priv *priv = host->alcor_pci;  in alcor_prepare_data()
243 	struct mmc_data *data = cmd->data;  in alcor_prepare_data()
249 	host->data = data;  in alcor_prepare_data()
250 	host->data->bytes_xfered = 0;  in alcor_prepare_data()
251 	host->blocks = data->blocks;  in alcor_prepare_data()
252 	host->sg = data->sg;  in alcor_prepare_data()
253 	host->sg_count = data->sg_count;  in alcor_prepare_data()
254 	dev_dbg(host->dev, "prepare DATA: sg %i, blocks: %i\n",  in alcor_prepare_data()
255 			host->sg_count, host->blocks);  in alcor_prepare_data()
257 	if (data->host_cookie != COOKIE_MAPPED)  in alcor_prepare_data()
258 		alcor_prepare_sg_miter(host);  in alcor_prepare_data()
263 static void alcor_send_cmd(struct alcor_sdmmc_host *host,  in alcor_send_cmd()  argument
266 	struct alcor_pci_priv *priv = host->alcor_pci;  in alcor_send_cmd()
270 	host->cmd = cmd;  in alcor_send_cmd()
271 	alcor_prepare_data(host, cmd);  in alcor_send_cmd()
273 	dev_dbg(host->dev, "send CMD. opcode: 0x%02x, arg; 0x%08x\n",  in alcor_send_cmd()
274 		cmd->opcode, cmd->arg);  in alcor_send_cmd()
275 	alcor_write8(priv, cmd->opcode | 0x40, AU6601_REG_CMD_OPCODE);  in alcor_send_cmd()
276 	alcor_write32be(priv, cmd->arg, AU6601_REG_CMD_ARG);  in alcor_send_cmd()
295 		dev_err(host->dev, "%s: cmd->flag (0x%02x) is not valid\n",  in alcor_send_cmd()
296 			mmc_hostname(mmc_from_priv(host)), mmc_resp_type(cmd));  in alcor_send_cmd()
301 		if (!cmd->data && cmd->busy_timeout)  in alcor_send_cmd()
302 			timeout = cmd->busy_timeout;  in alcor_send_cmd()
306 		schedule_delayed_work(&host->timeout_work,  in alcor_send_cmd()
310 	dev_dbg(host->dev, "xfer ctrl: 0x%02x; timeout: %lu\n", ctrl, timeout);  in alcor_send_cmd()
315 static void alcor_request_complete(struct alcor_sdmmc_host *host,  in alcor_request_complete()  argument
324 	if (!host->mrq)  in alcor_request_complete()
328 		cancel_delayed_work(&host->timeout_work);  in alcor_request_complete()
330 	mrq = host->mrq;  in alcor_request_complete()
332 	host->mrq = NULL;  in alcor_request_complete()
333 	host->cmd = NULL;  in alcor_request_complete()
334 	host->data = NULL;  in alcor_request_complete()
335 	host->dma_on = 0;  in alcor_request_complete()
337 	mmc_request_done(mmc_from_priv(host), mrq);  in alcor_request_complete()
340 static void alcor_finish_data(struct alcor_sdmmc_host *host)  in alcor_finish_data()  argument
344 	data = host->data;  in alcor_finish_data()
345 	host->data = NULL;  in alcor_finish_data()
346 	host->dma_on = 0;  in alcor_finish_data()
355 	if (data->error)  in alcor_finish_data()
356 		data->bytes_xfered = 0;  in alcor_finish_data()
358 		data->bytes_xfered = data->blksz * data->blocks;  in alcor_finish_data()
361 	 * Need to send CMD12 if -  in alcor_finish_data()
362 	 * a) open-ended multiblock transfer (no CMD23)  in alcor_finish_data()
365 	if (data->stop &&  in alcor_finish_data()
366 	    (data->error ||  in alcor_finish_data()
367 	     !host->mrq->sbc)) {  in alcor_finish_data()
373 		if (data->error)  in alcor_finish_data()
374 			alcor_reset(host, AU6601_RESET_CMD | AU6601_RESET_DATA);  in alcor_finish_data()
376 		alcor_unmask_sd_irqs(host);  in alcor_finish_data()
377 		alcor_send_cmd(host, data->stop, false);  in alcor_finish_data()
381 	alcor_request_complete(host, 1);  in alcor_finish_data()
384 static void alcor_err_irq(struct alcor_sdmmc_host *host, u32 intmask)  in alcor_err_irq()  argument
386 	dev_dbg(host->dev, "ERR IRQ %x\n", intmask);  in alcor_err_irq()
388 	if (host->cmd) {  in alcor_err_irq()
390 			host->cmd->error = -ETIMEDOUT;  in alcor_err_irq()
392 			host->cmd->error = -EILSEQ;  in alcor_err_irq()
395 	if (host->data) {  in alcor_err_irq()
397 			host->data->error = -ETIMEDOUT;  in alcor_err_irq()
399 			host->data->error = -EILSEQ;  in alcor_err_irq()
401 		host->data->bytes_xfered = 0;  in alcor_err_irq()
404 	alcor_reset(host, AU6601_RESET_CMD | AU6601_RESET_DATA);  in alcor_err_irq()
405 	alcor_request_complete(host, 1);  in alcor_err_irq()
408 static int alcor_cmd_irq_done(struct alcor_sdmmc_host *host, u32 intmask)  in alcor_cmd_irq_done()  argument
410 	struct alcor_pci_priv *priv = host->alcor_pci;  in alcor_cmd_irq_done()
420 	if (!host->cmd)  in alcor_cmd_irq_done()
423 	if (host->cmd->flags & MMC_RSP_PRESENT) {  in alcor_cmd_irq_done()
424 		struct mmc_command *cmd = host->cmd;  in alcor_cmd_irq_done()
426 		cmd->resp[0] = alcor_read32be(priv, AU6601_REG_CMD_RSP0);  in alcor_cmd_irq_done()
427 		dev_dbg(host->dev, "RSP0: 0x%04x\n", cmd->resp[0]);  in alcor_cmd_irq_done()
428 		if (host->cmd->flags & MMC_RSP_136) {  in alcor_cmd_irq_done()
429 			cmd->resp[1] =  in alcor_cmd_irq_done()
431 			cmd->resp[2] =  in alcor_cmd_irq_done()
433 			cmd->resp[3] =  in alcor_cmd_irq_done()
435 			dev_dbg(host->dev, "RSP1,2,3: 0x%04x 0x%04x 0x%04x\n",  in alcor_cmd_irq_done()
436 				cmd->resp[1], cmd->resp[2], cmd->resp[3]);  in alcor_cmd_irq_done()
441 	host->cmd->error = 0;  in alcor_cmd_irq_done()
444 	if (!host->data)  in alcor_cmd_irq_done()
447 	alcor_trigger_data_transfer(host);  in alcor_cmd_irq_done()
448 	host->cmd = NULL;  in alcor_cmd_irq_done()
452 static void alcor_cmd_irq_thread(struct alcor_sdmmc_host *host, u32 intmask)  in alcor_cmd_irq_thread()  argument
459 	if (!host->cmd && intmask & AU6601_INT_CMD_END) {  in alcor_cmd_irq_thread()
460 …dev_dbg(host->dev, "Got command interrupt 0x%08x even though no command operation was in progress.…  in alcor_cmd_irq_thread()
465 	if (!host->data)  in alcor_cmd_irq_thread()
466 		alcor_request_complete(host, 1);  in alcor_cmd_irq_thread()
468 		alcor_trigger_data_transfer(host);  in alcor_cmd_irq_thread()
469 	host->cmd = NULL;  in alcor_cmd_irq_thread()
472 static int alcor_data_irq_done(struct alcor_sdmmc_host *host, u32 intmask)  in alcor_data_irq_done()  argument
485 	if (!host->data && intmask == AU6601_INT_DATA_END)  in alcor_data_irq_done()
489 	if (!host->data)  in alcor_data_irq_done()
498 		alcor_trf_block_pio(host, true);  in alcor_data_irq_done()
501 		alcor_trf_block_pio(host, false);  in alcor_data_irq_done()
504 		if (!host->sg_count)  in alcor_data_irq_done()
507 		alcor_data_set_dma(host);  in alcor_data_irq_done()
510 		dev_err(host->dev, "Got READ_BUF_RDY and WRITE_BUF_RDY at same time\n");  in alcor_data_irq_done()
515 		if (!host->dma_on && host->blocks) {  in alcor_data_irq_done()
516 			alcor_trigger_data_transfer(host);  in alcor_data_irq_done()
526 static void alcor_data_irq_thread(struct alcor_sdmmc_host *host, u32 intmask)  in alcor_data_irq_thread()  argument
533 	if (!host->data) {  in alcor_data_irq_thread()
534 		dev_dbg(host->dev, "Got data interrupt 0x%08x even though no data operation was in progress.\n",  in alcor_data_irq_thread()
536 		alcor_reset(host, AU6601_RESET_DATA);  in alcor_data_irq_thread()
540 	if (alcor_data_irq_done(host, intmask))  in alcor_data_irq_thread()
543 	if ((intmask & AU6601_INT_DATA_END) || !host->blocks ||  in alcor_data_irq_thread()
544 	    (host->dma_on && !host->sg_count))  in alcor_data_irq_thread()
545 		alcor_finish_data(host);  in alcor_data_irq_thread()
548 static void alcor_cd_irq(struct alcor_sdmmc_host *host, u32 intmask)  in alcor_cd_irq()  argument
550 	dev_dbg(host->dev, "card %s\n",  in alcor_cd_irq()
553 	if (host->mrq) {  in alcor_cd_irq()
554 		dev_dbg(host->dev, "cancel all pending tasks.\n");  in alcor_cd_irq()
556 		if (host->data)  in alcor_cd_irq()
557 			host->data->error = -ENOMEDIUM;  in alcor_cd_irq()
559 		if (host->cmd)  in alcor_cd_irq()
560 			host->cmd->error = -ENOMEDIUM;  in alcor_cd_irq()
562 			host->mrq->cmd->error = -ENOMEDIUM;  in alcor_cd_irq()
564 		alcor_request_complete(host, 1);  in alcor_cd_irq()
567 	mmc_detect_change(mmc_from_priv(host), msecs_to_jiffies(1));  in alcor_cd_irq()
572 	struct alcor_sdmmc_host *host = d;  in alcor_irq_thread()  local
576 	mutex_lock(&host->cmd_mutex);  in alcor_irq_thread()
578 	intmask = host->irq_status_sd;  in alcor_irq_thread()
582 		dev_dbg(host->dev, "unexpected IRQ: 0x%04x\n", intmask);  in alcor_irq_thread()
590 			alcor_err_irq(host, tmp);  in alcor_irq_thread()
592 			alcor_cmd_irq_thread(host, tmp);  in alcor_irq_thread()
593 			alcor_data_irq_thread(host, tmp);  in alcor_irq_thread()
599 		alcor_cd_irq(host, intmask);  in alcor_irq_thread()
604 		dev_warn(host->dev,  in alcor_irq_thread()
610 		dev_dbg(host->dev, "got not handled IRQ: 0x%04x\n", intmask);  in alcor_irq_thread()
613 	mutex_unlock(&host->cmd_mutex);  in alcor_irq_thread()
614 	alcor_unmask_sd_irqs(host);  in alcor_irq_thread()
621 	struct alcor_sdmmc_host *host = d;  in alcor_irq()  local
622 	struct alcor_pci_priv *priv = host->alcor_pci;  in alcor_irq()
637 		cmd_done = alcor_cmd_irq_done(host, tmp);  in alcor_irq()
638 		data_done = alcor_data_irq_done(host, tmp);  in alcor_irq()
646 	host->irq_status_sd = status;  in alcor_irq()
648 	alcor_mask_sd_irqs(host);  in alcor_irq()
653 static void alcor_set_clock(struct alcor_sdmmc_host *host, unsigned int clock)  in alcor_set_clock()  argument
655 	struct alcor_pci_priv *priv = host->alcor_pci;  in alcor_set_clock()
669 		tmp_div = DIV_ROUND_UP(cfg->clk_src_freq, clock);  in alcor_set_clock()
670 		if (cfg->min_div > tmp_div || tmp_div > cfg->max_div)  in alcor_set_clock()
673 		tmp_clock = DIV_ROUND_UP(cfg->clk_src_freq, tmp_div);  in alcor_set_clock()
674 		tmp_diff = abs(clock - tmp_clock);  in alcor_set_clock()
678 			clk_src = cfg->clk_src_reg;  in alcor_set_clock()
683 	clk_src |= ((clk_div - 1) << 8);  in alcor_set_clock()
686 	dev_dbg(host->dev, "set freq %d cal freq %d, use div %d, mod %x\n",  in alcor_set_clock()
693 static void alcor_set_timing(struct mmc_host *mmc, struct mmc_ios *ios)  in alcor_set_timing()  argument
695 	struct alcor_sdmmc_host *host = mmc_priv(mmc);  in alcor_set_timing()  local
697 	if (ios->timing == MMC_TIMING_LEGACY) {  in alcor_set_timing()
698 		alcor_rmw8(host, AU6601_CLK_DELAY,  in alcor_set_timing()
701 		alcor_rmw8(host, AU6601_CLK_DELAY,  in alcor_set_timing()
706 static void alcor_set_bus_width(struct mmc_host *mmc, struct mmc_ios *ios)  in alcor_set_bus_width()  argument
708 	struct alcor_sdmmc_host *host = mmc_priv(mmc);  in alcor_set_bus_width()  local
709 	struct alcor_pci_priv *priv = host->alcor_pci;  in alcor_set_bus_width()
711 	if (ios->bus_width == MMC_BUS_WIDTH_1) {  in alcor_set_bus_width()
713 	} else if (ios->bus_width == MMC_BUS_WIDTH_4) {  in alcor_set_bus_width()
717 		dev_err(host->dev, "Unknown BUS mode\n");  in alcor_set_bus_width()
721 static int alcor_card_busy(struct mmc_host *mmc)  in alcor_card_busy()  argument
723 	struct alcor_sdmmc_host *host = mmc_priv(mmc);  in alcor_card_busy()  local
724 	struct alcor_pci_priv *priv = host->alcor_pci;  in alcor_card_busy()
733 static int alcor_get_cd(struct mmc_host *mmc)  in alcor_get_cd()  argument
735 	struct alcor_sdmmc_host *host = mmc_priv(mmc);  in alcor_get_cd()  local
736 	struct alcor_pci_priv *priv = host->alcor_pci;  in alcor_get_cd()
745 static int alcor_get_ro(struct mmc_host *mmc)  in alcor_get_ro()  argument
747 	struct alcor_sdmmc_host *host = mmc_priv(mmc);  in alcor_get_ro()  local
748 	struct alcor_pci_priv *priv = host->alcor_pci;  in alcor_get_ro()
757 static void alcor_request(struct mmc_host *mmc, struct mmc_request *mrq)  in alcor_request()  argument
759 	struct alcor_sdmmc_host *host = mmc_priv(mmc);  in alcor_request()  local
761 	mutex_lock(&host->cmd_mutex);  in alcor_request()
763 	host->mrq = mrq;  in alcor_request()
766 	if (alcor_get_cd(mmc))  in alcor_request()
767 		alcor_send_cmd(host, mrq->cmd, true);  in alcor_request()
769 		mrq->cmd->error = -ENOMEDIUM;  in alcor_request()
770 		alcor_request_complete(host, 1);  in alcor_request()
773 	mutex_unlock(&host->cmd_mutex);  in alcor_request()
776 static void alcor_pre_req(struct mmc_host *mmc,  in alcor_pre_req()  argument
779 	struct alcor_sdmmc_host *host = mmc_priv(mmc);  in alcor_pre_req()  local
780 	struct mmc_data *data = mrq->data;  in alcor_pre_req()
781 	struct mmc_command *cmd = mrq->cmd;  in alcor_pre_req()
788 	data->host_cookie = COOKIE_UNMAPPED;  in alcor_pre_req()
791 	if (cmd->opcode != MMC_READ_MULTIPLE_BLOCK  in alcor_pre_req()
792 			&& cmd->opcode != MMC_WRITE_MULTIPLE_BLOCK)  in alcor_pre_req()
796 	 * non-word-aligned buffers or lengths. A future improvement  in alcor_pre_req()
797 	 * could be made to use temporary DMA bounce-buffers when these  in alcor_pre_req()
803 	if (data->blocks * data->blksz < AU6601_MAX_DMA_BLOCK_SIZE)  in alcor_pre_req()
806 	if (data->blksz & 3)  in alcor_pre_req()
809 	for_each_sg(data->sg, sg, data->sg_len, i) {  in alcor_pre_req()
810 		if (sg->length != AU6601_MAX_DMA_BLOCK_SIZE)  in alcor_pre_req()
812 		if (sg->offset != 0)  in alcor_pre_req()
818 	sg_len = dma_map_sg(host->dev, data->sg, data->sg_len,  in alcor_pre_req()
821 		data->host_cookie = COOKIE_MAPPED;  in alcor_pre_req()
823 	data->sg_count = sg_len;  in alcor_pre_req()
826 static void alcor_post_req(struct mmc_host *mmc,  in alcor_post_req()  argument
830 	struct alcor_sdmmc_host *host = mmc_priv(mmc);  in alcor_post_req()  local
831 	struct mmc_data *data = mrq->data;  in alcor_post_req()
836 	if (data->host_cookie == COOKIE_MAPPED) {  in alcor_post_req()
837 		dma_unmap_sg(host->dev,  in alcor_post_req()
838 			     data->sg,  in alcor_post_req()
839 			     data->sg_len,  in alcor_post_req()
843 	data->host_cookie = COOKIE_UNMAPPED;  in alcor_post_req()
846 static void alcor_set_power_mode(struct mmc_host *mmc, struct mmc_ios *ios)  in alcor_set_power_mode()  argument
848 	struct alcor_sdmmc_host *host = mmc_priv(mmc);  in alcor_set_power_mode()  local
849 	struct alcor_pci_priv *priv = host->alcor_pci;  in alcor_set_power_mode()
851 	switch (ios->power_mode) {  in alcor_set_power_mode()
853 		alcor_set_clock(host, ios->clock);  in alcor_set_power_mode()
881 		alcor_set_clock(host, ios->clock);  in alcor_set_power_mode()
888 		alcor_set_clock(host, ios->clock);  in alcor_set_power_mode()
903 		dev_err(host->dev, "Unknown power parameter\n");  in alcor_set_power_mode()
907 static void alcor_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)  in alcor_set_ios()  argument
909 	struct alcor_sdmmc_host *host = mmc_priv(mmc);  in alcor_set_ios()  local
911 	mutex_lock(&host->cmd_mutex);  in alcor_set_ios()
913 	dev_dbg(host->dev, "set ios. bus width: %x, power mode: %x\n",  in alcor_set_ios()
914 		ios->bus_width, ios->power_mode);  in alcor_set_ios()
916 	if (ios->power_mode != host->cur_power_mode) {  in alcor_set_ios()
917 		alcor_set_power_mode(mmc, ios);  in alcor_set_ios()
918 		host->cur_power_mode = ios->power_mode;  in alcor_set_ios()
920 		alcor_set_timing(mmc, ios);  in alcor_set_ios()
921 		alcor_set_bus_width(mmc, ios);  in alcor_set_ios()
922 		alcor_set_clock(host, ios->clock);  in alcor_set_ios()
925 	mutex_unlock(&host->cmd_mutex);  in alcor_set_ios()
928 static int alcor_signal_voltage_switch(struct mmc_host *mmc,  in alcor_signal_voltage_switch()  argument
931 	struct alcor_sdmmc_host *host = mmc_priv(mmc);  in alcor_signal_voltage_switch()  local
933 	mutex_lock(&host->cmd_mutex);  in alcor_signal_voltage_switch()
935 	switch (ios->signal_voltage) {  in alcor_signal_voltage_switch()
937 		alcor_rmw8(host, AU6601_OPT, AU6601_OPT_SD_18V, 0);  in alcor_signal_voltage_switch()
940 		alcor_rmw8(host, AU6601_OPT, 0, AU6601_OPT_SD_18V);  in alcor_signal_voltage_switch()
947 	mutex_unlock(&host->cmd_mutex);  in alcor_signal_voltage_switch()
965 	struct alcor_sdmmc_host *host = container_of(d, struct alcor_sdmmc_host,  in alcor_timeout_timer()  local
967 	mutex_lock(&host->cmd_mutex);  in alcor_timeout_timer()
969 	dev_dbg(host->dev, "triggered timeout\n");  in alcor_timeout_timer()
970 	if (host->mrq) {  in alcor_timeout_timer()
971 		dev_err(host->dev, "Timeout waiting for hardware interrupt.\n");  in alcor_timeout_timer()
973 		if (host->data) {  in alcor_timeout_timer()
974 			host->data->error = -ETIMEDOUT;  in alcor_timeout_timer()
976 			if (host->cmd)  in alcor_timeout_timer()
977 				host->cmd->error = -ETIMEDOUT;  in alcor_timeout_timer()
979 				host->mrq->cmd->error = -ETIMEDOUT;  in alcor_timeout_timer()
982 		alcor_reset(host, AU6601_RESET_CMD | AU6601_RESET_DATA);  in alcor_timeout_timer()
983 		alcor_request_complete(host, 0);  in alcor_timeout_timer()
986 	mutex_unlock(&host->cmd_mutex);  in alcor_timeout_timer()
989 static void alcor_hw_init(struct alcor_sdmmc_host *host)  in alcor_hw_init()  argument
991 	struct alcor_pci_priv *priv = host->alcor_pci;  in alcor_hw_init()
992 	struct alcor_dev_cfg *cfg = priv->cfg;  in alcor_hw_init()
1000 	alcor_reset(host, AU6601_RESET_CMD);  in alcor_hw_init()
1010 	alcor_reset(host, AU6601_RESET_DATA);  in alcor_hw_init()
1020 	/* for 6601 - dma_boundary; for 6621 - dma_page_cnt  in alcor_hw_init()
1023 	alcor_write8(priv, cfg->dma, AU6601_DMA_BOUNDARY);  in alcor_hw_init()
1031 	alcor_unmask_sd_irqs(host);  in alcor_hw_init()
1034 static void alcor_hw_uninit(struct alcor_sdmmc_host *host)  in alcor_hw_uninit()  argument
1036 	struct alcor_pci_priv *priv = host->alcor_pci;  in alcor_hw_uninit()
1038 	alcor_mask_sd_irqs(host);  in alcor_hw_uninit()
1039 	alcor_reset(host, AU6601_RESET_CMD | AU6601_RESET_DATA);  in alcor_hw_uninit()
1049 static void alcor_init_mmc(struct alcor_sdmmc_host *host)  in alcor_init_mmc()  argument
1051 	struct mmc_host *mmc = mmc_from_priv(host);  in alcor_init_mmc()  local
1053 	mmc->f_min = AU6601_MIN_CLOCK;  in alcor_init_mmc()
1054 	mmc->f_max = AU6601_MAX_CLOCK;  in alcor_init_mmc()
1055 	mmc->ocr_avail = MMC_VDD_33_34;  in alcor_init_mmc()
1056 	mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SD_HIGHSPEED  in alcor_init_mmc()
1059 	mmc->caps2 = MMC_CAP2_NO_SDIO;  in alcor_init_mmc()
1060 	mmc->ops = &alcor_sdc_ops;  in alcor_init_mmc()
1073 	mmc->max_segs = AU6601_MAX_DMA_SEGMENTS;  in alcor_init_mmc()
1074 	mmc->max_seg_size = AU6601_MAX_DMA_BLOCK_SIZE;  in alcor_init_mmc()
1075 	mmc->max_blk_count = 240;  in alcor_init_mmc()
1076 	mmc->max_req_size = mmc->max_blk_count * mmc->max_blk_size;  in alcor_init_mmc()
1077 	dma_set_max_seg_size(host->dev, mmc->max_seg_size);  in alcor_init_mmc()
1082 	struct alcor_pci_priv *priv = pdev->dev.platform_data;  in alcor_pci_sdmmc_drv_probe()
1083 	struct mmc_host *mmc;  in alcor_pci_sdmmc_drv_probe()  local
1084 	struct alcor_sdmmc_host *host;  in alcor_pci_sdmmc_drv_probe()  local
1087 	mmc = mmc_alloc_host(sizeof(*host), &pdev->dev);  in alcor_pci_sdmmc_drv_probe()
1088 	if (!mmc) {  in alcor_pci_sdmmc_drv_probe()
1089 		dev_err(&pdev->dev, "Can't allocate MMC\n");  in alcor_pci_sdmmc_drv_probe()
1090 		return -ENOMEM;  in alcor_pci_sdmmc_drv_probe()
1093 	host = mmc_priv(mmc);  in alcor_pci_sdmmc_drv_probe()
1094 	host->dev = &pdev->dev;  in alcor_pci_sdmmc_drv_probe()
1095 	host->cur_power_mode = MMC_POWER_UNDEFINED;  in alcor_pci_sdmmc_drv_probe()
1096 	host->alcor_pci = priv;  in alcor_pci_sdmmc_drv_probe()
1102 	ret = devm_request_threaded_irq(&pdev->dev, priv->irq,  in alcor_pci_sdmmc_drv_probe()
1104 			DRV_NAME_ALCOR_PCI_SDMMC, host);  in alcor_pci_sdmmc_drv_probe()
1107 		dev_err(&pdev->dev, "Failed to get irq for data line\n");  in alcor_pci_sdmmc_drv_probe()
1111 	mutex_init(&host->cmd_mutex);  in alcor_pci_sdmmc_drv_probe()
1112 	INIT_DELAYED_WORK(&host->timeout_work, alcor_timeout_timer);  in alcor_pci_sdmmc_drv_probe()
1114 	alcor_init_mmc(host);  in alcor_pci_sdmmc_drv_probe()
1115 	alcor_hw_init(host);  in alcor_pci_sdmmc_drv_probe()
1117 	dev_set_drvdata(&pdev->dev, host);  in alcor_pci_sdmmc_drv_probe()
1118 	ret = mmc_add_host(mmc);  in alcor_pci_sdmmc_drv_probe()
1125 	mmc_free_host(mmc);  in alcor_pci_sdmmc_drv_probe()
1131 	struct alcor_sdmmc_host *host = dev_get_drvdata(&pdev->dev);  in alcor_pci_sdmmc_drv_remove()  local
1132 	struct mmc_host *mmc = mmc_from_priv(host);  in alcor_pci_sdmmc_drv_remove()  local
1134 	if (cancel_delayed_work_sync(&host->timeout_work))  in alcor_pci_sdmmc_drv_remove()
1135 		alcor_request_complete(host, 0);  in alcor_pci_sdmmc_drv_remove()
1137 	alcor_hw_uninit(host);  in alcor_pci_sdmmc_drv_remove()
1138 	mmc_remove_host(mmc);  in alcor_pci_sdmmc_drv_remove()
1139 	mmc_free_host(mmc);  in alcor_pci_sdmmc_drv_remove()
1145 	struct alcor_sdmmc_host *host = dev_get_drvdata(dev);  in alcor_pci_sdmmc_suspend()  local
1147 	if (cancel_delayed_work_sync(&host->timeout_work))  in alcor_pci_sdmmc_suspend()
1148 		alcor_request_complete(host, 0);  in alcor_pci_sdmmc_suspend()
1150 	alcor_hw_uninit(host);  in alcor_pci_sdmmc_suspend()
1157 	struct alcor_sdmmc_host *host = dev_get_drvdata(dev);  in alcor_pci_sdmmc_resume()  local
1159 	alcor_hw_init(host);  in alcor_pci_sdmmc_resume()
1189 MODULE_AUTHOR("Oleksij Rempel <linux@rempel-privat.de>");
1190 MODULE_DESCRIPTION("PCI driver for Alcor Micro AU6601 Secure Digital Host Controller Interface");