138 static inline int mmc_cs_off(struct mmc_spi_host *host)  in mmc_cs_off()  argument
141 	return spi_setup(host->spi);  in mmc_cs_off()
144 static int mmc_spi_readbytes(struct mmc_spi_host *host, unsigned int len)  in mmc_spi_readbytes()  argument
146 	if (len > sizeof(*host->data)) {  in mmc_spi_readbytes()
151 	host->status.len = len;  in mmc_spi_readbytes()
153 	return spi_sync_locked(host->spi, &host->readback);  in mmc_spi_readbytes()
156 static int mmc_spi_skip(struct mmc_spi_host *host, unsigned long timeout,  in mmc_spi_skip()  argument
159 	u8 *cp = host->data->status;  in mmc_spi_skip()
166 		status = mmc_spi_readbytes(host, n);  in mmc_spi_skip()
182 mmc_spi_wait_unbusy(struct mmc_spi_host *host, unsigned long timeout)  in mmc_spi_wait_unbusy()  argument
184 	return mmc_spi_skip(host, timeout, sizeof(host->data->status), 0);  in mmc_spi_wait_unbusy()
187 static int mmc_spi_readtoken(struct mmc_spi_host *host, unsigned long timeout)  in mmc_spi_readtoken()  argument
189 	return mmc_spi_skip(host, timeout, 1, 0xff);  in mmc_spi_readtoken()
214 static int mmc_spi_response_get(struct mmc_spi_host *host,  in mmc_spi_response_get()  argument
218 	u8	*cp = host->data->status;  in mmc_spi_response_get()
219 	u8	*end = cp + host->t.len;  in mmc_spi_response_get()
238 		cp = host->data->status;  in mmc_spi_response_get()
253 			value = mmc_spi_readbytes(host, 1);  in mmc_spi_response_get()
270 			value = mmc_spi_readbytes(host, 1);  in mmc_spi_response_get()
273 			cp = host->data->status;  in mmc_spi_response_get()
315 			mmc_spi_wait_unbusy(host, msecs_to_jiffies(timeout_ms));  in mmc_spi_response_get()
325 			value = mmc_spi_readbytes(host, 1);  in mmc_spi_response_get()
328 			cp = host->data->status;  in mmc_spi_response_get()
348 				value = mmc_spi_readbytes(host, 1);  in mmc_spi_response_get()
351 				cp = host->data->status;  in mmc_spi_response_get()
369 		dev_dbg(&host->spi->dev, "bad response type %04x\n",  in mmc_spi_response_get()
377 		dev_dbg(&host->spi->dev,  in mmc_spi_response_get()
387 	mmc_cs_off(host);  in mmc_spi_response_get()
398 mmc_spi_command_send(struct mmc_spi_host *host,  in mmc_spi_command_send()  argument
402 	struct scratch		*data = host->data;  in mmc_spi_command_send()
476 	dev_dbg(&host->spi->dev, "  CMD%d, resp %s\n",  in mmc_spi_command_send()
480 	spi_message_init(&host->m);  in mmc_spi_command_send()
482 	t = &host->t;  in mmc_spi_command_send()
487 	spi_message_add_tail(t, &host->m);  in mmc_spi_command_send()
489 	status = spi_sync_locked(host->spi, &host->m);  in mmc_spi_command_send()
491 		dev_dbg(&host->spi->dev, "  ... write returned %d\n", status);  in mmc_spi_command_send()
497 	return mmc_spi_response_get(host, cmd, cs_on);  in mmc_spi_command_send()
509 mmc_spi_setup_data_message(struct mmc_spi_host *host, bool multiple, bool write)  in mmc_spi_setup_data_message()  argument
512 	struct scratch		*scratch = host->data;  in mmc_spi_setup_data_message()
514 	spi_message_init(&host->m);  in mmc_spi_setup_data_message()
520 		t = &host->token;  in mmc_spi_setup_data_message()
528 		spi_message_add_tail(t, &host->m);  in mmc_spi_setup_data_message()
534 	t = &host->t;  in mmc_spi_setup_data_message()
536 	t->tx_buf = host->ones;  in mmc_spi_setup_data_message()
538 	spi_message_add_tail(t, &host->m);  in mmc_spi_setup_data_message()
540 	t = &host->crc;  in mmc_spi_setup_data_message()
547 		t->tx_buf = host->ones;  in mmc_spi_setup_data_message()
550 	spi_message_add_tail(t, &host->m);  in mmc_spi_setup_data_message()
567 		t = &host->early_status;  in mmc_spi_setup_data_message()
570 		t->tx_buf = host->ones;  in mmc_spi_setup_data_message()
573 		spi_message_add_tail(t, &host->m);  in mmc_spi_setup_data_message()
590 mmc_spi_writeblock(struct mmc_spi_host *host, struct spi_transfer *t,  in mmc_spi_writeblock()  argument
593 	struct spi_device	*spi = host->spi;  in mmc_spi_writeblock()
595 	struct scratch		*scratch = host->data;  in mmc_spi_writeblock()
598 	if (host->mmc->use_spi_crc)  in mmc_spi_writeblock()
601 	status = spi_sync_locked(spi, &host->m);  in mmc_spi_writeblock()
664 	return mmc_spi_wait_unbusy(host, timeout);  in mmc_spi_writeblock()
684 mmc_spi_readblock(struct mmc_spi_host *host, struct spi_transfer *t,  in mmc_spi_readblock()  argument
687 	struct spi_device	*spi = host->spi;  in mmc_spi_readblock()
689 	struct scratch		*scratch = host->data;  in mmc_spi_readblock()
696 	status = mmc_spi_readbytes(host, 1);  in mmc_spi_readblock()
701 		status = mmc_spi_readtoken(host, timeout);  in mmc_spi_readblock()
718 	status = spi_sync_locked(spi, &host->m);  in mmc_spi_readblock()
745 	if (host->mmc->use_spi_crc) {  in mmc_spi_readblock()
768 mmc_spi_data_do(struct mmc_spi_host *host, struct mmc_command *cmd,  in mmc_spi_data_do()  argument
771 	struct spi_device	*spi = host->spi;  in mmc_spi_data_do()
781 	mmc_spi_setup_data_message(host, multiple, write);  in mmc_spi_data_do()
782 	t = &host->t;  in mmc_spi_data_do()
815 				status = mmc_spi_writeblock(host, t, timeout);  in mmc_spi_data_do()
817 				status = mmc_spi_readblock(host, t, timeout);  in mmc_spi_data_do()
849 		struct scratch	*scratch = host->data;  in mmc_spi_data_do()
860 		INIT_LIST_HEAD(&host->m.transfers);  in mmc_spi_data_do()
861 		list_add(&host->early_status.transfer_list,  in mmc_spi_data_do()
862 				&host->m.transfers);  in mmc_spi_data_do()
867 		host->early_status.tx_buf = host->early_status.rx_buf;  in mmc_spi_data_do()
868 		host->early_status.len = statlen;  in mmc_spi_data_do()
870 		tmp = spi_sync_locked(spi, &host->m);  in mmc_spi_data_do()
885 		tmp = mmc_spi_wait_unbusy(host, timeout);  in mmc_spi_data_do()
899 	struct mmc_spi_host	*host = mmc_priv(mmc);  in mmc_spi_request()  local
912 			dev_dbg(&host->spi->dev, "bogus command\n");  in mmc_spi_request()
919 			dev_dbg(&host->spi->dev, "bogus STOP command\n");  in mmc_spi_request()
926 			mmc_request_done(host->mmc, mrq);  in mmc_spi_request()
933 	spi_bus_lock(host->spi->controller);  in mmc_spi_request()
937 	status = mmc_spi_command_send(host, mrq, mrq->cmd, mrq->data != NULL);  in mmc_spi_request()
939 		mmc_spi_data_do(host, mrq->cmd, mrq->data, mrq->data->blksz);  in mmc_spi_request()
952 			status = mmc_spi_command_send(host, mrq, &stop, 0);  in mmc_spi_request()
959 			status = mmc_spi_command_send(host, mrq, mrq->stop, 0);  in mmc_spi_request()
961 			mmc_cs_off(host);  in mmc_spi_request()
965 	spi_bus_unlock(host->spi->controller);  in mmc_spi_request()
967 	mmc_request_done(host->mmc, mrq);  in mmc_spi_request()
978 static void mmc_spi_initsequence(struct mmc_spi_host *host)  in mmc_spi_initsequence()  argument
983 	mmc_spi_wait_unbusy(host, msecs_to_jiffies(MMC_SPI_INIT_TIMEOUT_MS));  in mmc_spi_initsequence()
984 	mmc_spi_readbytes(host, 10);  in mmc_spi_initsequence()
1005 	host->spi->mode ^= SPI_CS_HIGH;  in mmc_spi_initsequence()
1006 	if (spi_setup(host->spi) != 0) {  in mmc_spi_initsequence()
1008 		dev_warn(&host->spi->dev,  in mmc_spi_initsequence()
1010 		host->spi->mode ^= SPI_CS_HIGH;  in mmc_spi_initsequence()
1012 		mmc_spi_readbytes(host, 18);  in mmc_spi_initsequence()
1014 		host->spi->mode ^= SPI_CS_HIGH;  in mmc_spi_initsequence()
1015 		if (spi_setup(host->spi) != 0) {  in mmc_spi_initsequence()
1017 			dev_err(&host->spi->dev,  in mmc_spi_initsequence()
1035 	struct mmc_spi_host *host = mmc_priv(mmc);  in mmc_spi_set_ios()  local
1037 	if (host->power_mode != ios->power_mode) {  in mmc_spi_set_ios()
1040 		canpower = host->pdata && host->pdata->setpower;  in mmc_spi_set_ios()
1042 		dev_dbg(&host->spi->dev, "power %s (%d)%s\n",  in mmc_spi_set_ios()
1054 				host->pdata->setpower(&host->spi->dev,  in mmc_spi_set_ios()
1057 					msleep(host->powerup_msecs);  in mmc_spi_set_ios()
1063 			mmc_spi_initsequence(host);  in mmc_spi_set_ios()
1078 			host->spi->mode &= ~(SPI_CPOL|SPI_CPHA);  in mmc_spi_set_ios()
1079 			mres = spi_setup(host->spi);  in mmc_spi_set_ios()
1081 				dev_dbg(&host->spi->dev,  in mmc_spi_set_ios()
1084 			if (spi_write(host->spi, &nullbyte, 1) < 0)  in mmc_spi_set_ios()
1085 				dev_dbg(&host->spi->dev,  in mmc_spi_set_ios()
1099 				host->spi->mode |= (SPI_CPOL|SPI_CPHA);  in mmc_spi_set_ios()
1100 				mres = spi_setup(host->spi);  in mmc_spi_set_ios()
1102 					dev_dbg(&host->spi->dev,  in mmc_spi_set_ios()
1107 		host->power_mode = ios->power_mode;  in mmc_spi_set_ios()
1110 	if (host->spi->max_speed_hz != ios->clock && ios->clock != 0) {  in mmc_spi_set_ios()
1113 		host->spi->max_speed_hz = ios->clock;  in mmc_spi_set_ios()
1114 		status = spi_setup(host->spi);  in mmc_spi_set_ios()
1115 		dev_dbg(&host->spi->dev, "  clock to %d Hz, %d\n",  in mmc_spi_set_ios()
1116 			host->spi->max_speed_hz, status);  in mmc_spi_set_ios()
1137 	struct mmc_spi_host *host = mmc_priv(mmc);  in mmc_spi_detect_irq()  local
1138 	u16 delay_msec = max(host->pdata->detect_delay, (u16)100);  in mmc_spi_detect_irq()
1148 	struct mmc_spi_host	*host;  in mmc_spi_probe()  local
1188 	mmc = devm_mmc_alloc_host(&spi->dev, sizeof(*host));  in mmc_spi_probe()
1214 	host = mmc_priv(mmc);  in mmc_spi_probe()
1215 	host->mmc = mmc;  in mmc_spi_probe()
1216 	host->spi = spi;  in mmc_spi_probe()
1218 	host->ones = ones;  in mmc_spi_probe()
1225 	host->pdata = mmc_spi_get_pdata(spi);  in mmc_spi_probe()
1226 	if (host->pdata)  in mmc_spi_probe()
1227 		mmc->ocr_avail = host->pdata->ocr_mask;  in mmc_spi_probe()
1232 	if (host->pdata && host->pdata->setpower) {  in mmc_spi_probe()
1233 		host->powerup_msecs = host->pdata->powerup_msecs;  in mmc_spi_probe()
1234 		if (!host->powerup_msecs || host->powerup_msecs > 250)  in mmc_spi_probe()
1235 			host->powerup_msecs = 250;  in mmc_spi_probe()
1239 	host->data = kmalloc_obj(*host->data);  in mmc_spi_probe()
1240 	if (!host->data)  in mmc_spi_probe()
1244 	spi_message_init(&host->readback);  in mmc_spi_probe()
1246 	spi_message_add_tail(&host->status, &host->readback);  in mmc_spi_probe()
1247 	host->status.tx_buf = host->ones;  in mmc_spi_probe()
1248 	host->status.rx_buf = &host->data->status;  in mmc_spi_probe()
1249 	host->status.cs_change = 1;  in mmc_spi_probe()
1252 	if (host->pdata && host->pdata->init) {  in mmc_spi_probe()
1253 		status = host->pdata->init(&spi->dev, mmc_spi_detect_irq, mmc);  in mmc_spi_probe()
1259 	if (host->pdata) {  in mmc_spi_probe()
1260 		mmc->caps |= host->pdata->caps;  in mmc_spi_probe()
1261 		mmc->caps2 |= host->pdata->caps2;  in mmc_spi_probe()
1296 			(host->pdata && host->pdata->setpower)  in mmc_spi_probe()
1305 	kfree(host->data);  in mmc_spi_probe()
1317 	struct mmc_spi_host	*host = mmc_priv(mmc);  in mmc_spi_remove()  local
1320 	if (host->pdata && host->pdata->exit)  in mmc_spi_remove()
1321 		host->pdata->exit(&spi->dev, mmc);  in mmc_spi_remove()
1325 	kfree(host->data);  in mmc_spi_remove()
1326 	kfree(host->ones);  in mmc_spi_remove()