46 	/* The card ID and card revision, as reported by the hardware. */
73 	/* True is card suspended */
77 static void free_if_spi_card(struct if_spi_card *card)  in free_if_spi_card()  argument
82 	list_for_each_safe(cursor, next, &card->cmd_packet_list) {  in free_if_spi_card()
87 	list_for_each_safe(cursor, next, &card->data_packet_list) {  in free_if_spi_card()
92 	kfree(card);  in free_if_spi_card()
129 static void spu_transaction_init(struct if_spi_card *card)  in spu_transaction_init()  argument
131 	if (!time_after(jiffies, card->prev_xfer_time + 1)) {  in spu_transaction_init()
140 static void spu_transaction_finish(struct if_spi_card *card)  in spu_transaction_finish()  argument
142 	card->prev_xfer_time = jiffies;  in spu_transaction_finish()
149 static int spu_write(struct if_spi_card *card, u16 reg, const u8 *buf, int len)  in spu_write()  argument
165 	spu_transaction_init(card);  in spu_write()
177 	err = spi_sync(card->spi, &m);  in spu_write()
178 	spu_transaction_finish(card);  in spu_write()
182 static inline int spu_write_u16(struct if_spi_card *card, u16 reg, u16 val)  in spu_write_u16()  argument
187 	return spu_write(card, reg, (u8 *)&buff, sizeof(u16));  in spu_write_u16()
202 static int spu_read(struct if_spi_card *card, u16 reg, u8 *buf, int len)  in spu_read()  argument
218 	spu_transaction_init(card);  in spu_read()
230 	delay = spu_reg_is_port_reg(reg) ? card->spu_port_delay :  in spu_read()
231 						card->spu_reg_delay;  in spu_read()
232 	if (card->use_dummy_writes) {  in spu_read()
248 	err = spi_sync(card->spi, &m);  in spu_read()
249 	spu_transaction_finish(card);  in spu_read()
254 static inline int spu_read_u16(struct if_spi_card *card, u16 reg, u16 *val)  in spu_read_u16()  argument
259 	ret = spu_read(card, reg, (u8 *)&buf, sizeof(buf));  in spu_read_u16()
269 static int spu_read_u32(struct if_spi_card *card, u16 reg, u32 *val)  in spu_read_u32()  argument
274 	err = spu_read(card, reg, (u8 *)&buf, sizeof(buf));  in spu_read_u32()
289 static int spu_wait_for_u16(struct if_spi_card *card, u16 reg,  in spu_wait_for_u16()  argument
296 		err = spu_read_u16(card, reg, &val);  in spu_wait_for_u16()
319 static int spu_wait_for_u32(struct if_spi_card *card, u32 reg, u32 target)  in spu_wait_for_u32()  argument
324 		err = spu_read_u32(card, reg, &val);  in spu_wait_for_u32()
334 static int spu_set_interrupt_mode(struct if_spi_card *card,  in spu_set_interrupt_mode()  argument
345 		err = spu_write_u16(card, IF_SPI_HOST_INT_STATUS_MASK_REG, 0);  in spu_set_interrupt_mode()
349 		err = spu_write_u16(card, IF_SPI_HOST_INT_STATUS_MASK_REG,  in spu_set_interrupt_mode()
362 	 * are off, we need to set the "Card Interrupt Cause" register to  in spu_set_interrupt_mode()
363 	 * trigger a card interrupt.  in spu_set_interrupt_mode()
366 		err = spu_write_u16(card, IF_SPI_HOST_INT_CTRL_REG,  in spu_set_interrupt_mode()
374 		err = spu_write_u16(card, IF_SPI_HOST_INT_STATUS_MASK_REG, 0);  in spu_set_interrupt_mode()
381 static int spu_get_chip_revision(struct if_spi_card *card,  in spu_get_chip_revision()  argument
386 	err = spu_read_u32(card, IF_SPI_DEVICEID_CTRL_REG, &dev_ctrl);  in spu_get_chip_revision()
394 static int spu_set_bus_mode(struct if_spi_card *card, u16 mode)  in spu_set_bus_mode()  argument
399 	err = spu_write_u16(card, IF_SPI_SPU_BUS_MODE_REG, mode);  in spu_set_bus_mode()
403 	err = spu_read_u16(card, IF_SPI_SPU_BUS_MODE_REG, &rval);  in spu_set_bus_mode()
413 static int spu_init(struct if_spi_card *card, int use_dummy_writes)  in spu_init()  argument
422 	card->use_dummy_writes = 0;  in spu_init()
423 	err = spu_set_bus_mode(card,  in spu_init()
429 	card->spu_port_delay = 1000;  in spu_init()
430 	card->spu_reg_delay = 1000;  in spu_init()
431 	err = spu_read_u32(card, IF_SPI_DELAY_READ_REG, &delay);  in spu_init()
434 	card->spu_port_delay = delay & 0x0000ffff;  in spu_init()
435 	card->spu_reg_delay = (delay & 0xffff0000) >> 16;  in spu_init()
439 		card->use_dummy_writes = 1;  in spu_init()
440 		err = spu_set_bus_mode(card,  in spu_init()
450 		    card->spu_port_delay, card->spu_reg_delay);  in spu_init()
458 static int if_spi_prog_helper_firmware(struct if_spi_card *card,  in if_spi_prog_helper_firmware()  argument
466 	err = spu_set_interrupt_mode(card, 1, 0);  in if_spi_prog_helper_firmware()
479 		err = spu_write_u16(card, IF_SPI_SCRATCH_1_REG,  in if_spi_prog_helper_firmware()
484 		err = spu_wait_for_u16(card, IF_SPI_HOST_INT_STATUS_REG,  in if_spi_prog_helper_firmware()
498 		err = spu_write(card, IF_SPI_CMD_RDWRPORT_REG,  in if_spi_prog_helper_firmware()
504 		err = spu_write_u16(card, IF_SPI_HOST_INT_STATUS_REG, 0);  in if_spi_prog_helper_firmware()
507 		err = spu_write_u16(card, IF_SPI_CARD_INT_CAUSE_REG,  in if_spi_prog_helper_firmware()
520 	err = spu_write_u16(card, IF_SPI_SCRATCH_1_REG, FIRMWARE_DNLD_OK);  in if_spi_prog_helper_firmware()
523 	err = spu_write_u16(card, IF_SPI_HOST_INT_STATUS_REG, 0);  in if_spi_prog_helper_firmware()
526 	err = spu_write_u16(card, IF_SPI_CARD_INT_CAUSE_REG,  in if_spi_prog_helper_firmware()
539 static int if_spi_prog_main_firmware_check_len(struct if_spi_card *card,  in if_spi_prog_main_firmware_check_len()  argument
549 	err = spu_wait_for_u16(card, IF_SPI_HOST_INT_STATUS_REG,  in if_spi_prog_main_firmware_check_len()
558 	err = spu_read_u16(card, IF_SPI_SCRATCH_1_REG, &len);  in if_spi_prog_main_firmware_check_len()
577 static int if_spi_prog_main_firmware(struct if_spi_card *card,  in if_spi_prog_main_firmware()  argument
580 	struct lbs_private *priv = card->priv;  in if_spi_prog_main_firmware()
586 	err = spu_set_interrupt_mode(card, 1, 0);  in if_spi_prog_main_firmware()
590 	err = spu_wait_for_u16(card, IF_SPI_SCRATCH_1_REG, 0, 0);  in if_spi_prog_main_firmware()
602 	while ((len = if_spi_prog_main_firmware_check_len(card, &crc_err))) {  in if_spi_prog_main_firmware()
629 			memset(card->cmd_buffer, 0, len);  in if_spi_prog_main_firmware()
630 			memcpy(card->cmd_buffer, fw, bytes);  in if_spi_prog_main_firmware()
632 			memcpy(card->cmd_buffer, fw, len);  in if_spi_prog_main_firmware()
634 		err = spu_write_u16(card, IF_SPI_HOST_INT_STATUS_REG, 0);  in if_spi_prog_main_firmware()
637 		err = spu_write(card, IF_SPI_CMD_RDWRPORT_REG,  in if_spi_prog_main_firmware()
638 				card->cmd_buffer, len);  in if_spi_prog_main_firmware()
641 		err = spu_write_u16(card, IF_SPI_CARD_INT_CAUSE_REG ,  in if_spi_prog_main_firmware()
652 	err = spu_wait_for_u32(card, IF_SPI_SCRATCH_4_REG,  in if_spi_prog_main_firmware()
672 /* Move a command from the card to the host */
673 static int if_spi_c2h_cmd(struct if_spi_card *card)  in if_spi_c2h_cmd()  argument
675 	struct lbs_private *priv = card->priv;  in if_spi_c2h_cmd()
696 	err = spu_read_u16(card, IF_SPI_SCRATCH_2_REG, &len);  in if_spi_c2h_cmd()
700 		netdev_err(priv->dev, "%s: error: card has no data for host\n",  in if_spi_c2h_cmd()
713 	err = spu_read(card, IF_SPI_CMD_RDWRPORT_REG,  in if_spi_c2h_cmd()
714 				card->cmd_buffer, ALIGN(len, 4));  in if_spi_c2h_cmd()
722 	memcpy(priv->resp_buf[i], card->cmd_buffer, len);  in if_spi_c2h_cmd()
733 /* Move data from the card to the host */
734 static int if_spi_c2h_data(struct if_spi_card *card)  in if_spi_c2h_data()  argument
736 	struct lbs_private *priv = card->priv;  in if_spi_c2h_data()
743 	err = spu_read_u16(card, IF_SPI_SCRATCH_1_REG, &len);  in if_spi_c2h_data()
747 		netdev_err(priv->dev, "%s: error: card has no data for host\n",  in if_spi_c2h_data()
753 			   "%s: error: card has %d bytes of data, but our maximum skb size is %zu\n",  in if_spi_c2h_data()
769 	err = spu_read(card, IF_SPI_DATA_RDWRPORT_REG, data, ALIGN(len, 4));  in if_spi_c2h_data()
776 	err = lbs_process_rxed_packet(card->priv, skb);  in if_spi_c2h_data()
786 /* Move data or a command from the host to the card. */
787 static void if_spi_h2c(struct if_spi_card *card,  in if_spi_h2c()  argument
790 	struct lbs_private *priv = card->priv;  in if_spi_h2c()
808 	/* Write the data to the card */  in if_spi_h2c()
809 	err = spu_write(card, port_reg, packet->buffer, packet->blen);  in if_spi_h2c()
820 /* Inform the host about a card event */
821 static void if_spi_e2h(struct if_spi_card *card)  in if_spi_e2h()  argument
825 	struct lbs_private *priv = card->priv;  in if_spi_e2h()
827 	err = spu_read_u32(card, IF_SPI_SCRATCH_3_REG, &cause);  in if_spi_e2h()
831 	/* re-enable the card event interrupt */  in if_spi_e2h()
832 	spu_write_u16(card, IF_SPI_HOST_INT_STATUS_REG,  in if_spi_e2h()
835 	/* generate a card interrupt */  in if_spi_e2h()
836 	spu_write_u16(card, IF_SPI_CARD_INT_CAUSE_REG, IF_SPI_CIC_HOST_EVENT);  in if_spi_e2h()
847 	struct if_spi_card *card;  in if_spi_host_to_card_worker()  local
853 	card = container_of(work, struct if_spi_card, packet_work);  in if_spi_host_to_card_worker()
854 	priv = card->priv;  in if_spi_host_to_card_worker()
860 	err = spu_read_u16(card, IF_SPI_HOST_INT_STATUS_REG,  in if_spi_host_to_card_worker()
868 		err = if_spi_c2h_cmd(card);  in if_spi_host_to_card_worker()
873 		err = if_spi_c2h_data(card);  in if_spi_host_to_card_worker()
879 	 * workaround: in PS mode, the card does not set the Command  in if_spi_host_to_card_worker()
883 	   (card->priv->psstate != PS_STATE_FULL_POWER &&  in if_spi_host_to_card_worker()
887 		 * if there was a previous command sent, the card has  in if_spi_host_to_card_worker()
892 		lbs_host_to_card_done(card->priv);  in if_spi_host_to_card_worker()
896 		spin_lock_irqsave(&card->buffer_lock, flags);  in if_spi_host_to_card_worker()
897 		if (!list_empty(&card->cmd_packet_list)) {  in if_spi_host_to_card_worker()
898 			packet = (struct if_spi_packet *)(card->  in if_spi_host_to_card_worker()
902 		spin_unlock_irqrestore(&card->buffer_lock, flags);  in if_spi_host_to_card_worker()
905 			if_spi_h2c(card, packet, MVMS_CMD);  in if_spi_host_to_card_worker()
910 		spin_lock_irqsave(&card->buffer_lock, flags);  in if_spi_host_to_card_worker()
911 		if (!list_empty(&card->data_packet_list)) {  in if_spi_host_to_card_worker()
912 			packet = (struct if_spi_packet *)(card->  in if_spi_host_to_card_worker()
916 		spin_unlock_irqrestore(&card->buffer_lock, flags);  in if_spi_host_to_card_worker()
919 			if_spi_h2c(card, packet, MVMS_DAT);  in if_spi_host_to_card_worker()
922 		if_spi_e2h(card);  in if_spi_host_to_card_worker()
930  * Host to Card
940 	struct if_spi_card *card = priv->card;  in if_spi_host_to_card()  local
963 		spin_lock_irqsave(&card->buffer_lock, flags);  in if_spi_host_to_card()
964 		list_add_tail(&packet->list, &card->cmd_packet_list);  in if_spi_host_to_card()
965 		spin_unlock_irqrestore(&card->buffer_lock, flags);  in if_spi_host_to_card()
969 		spin_lock_irqsave(&card->buffer_lock, flags);  in if_spi_host_to_card()
970 		list_add_tail(&packet->list, &card->data_packet_list);  in if_spi_host_to_card()
971 		spin_unlock_irqrestore(&card->buffer_lock, flags);  in if_spi_host_to_card()
982 	queue_work(card->workqueue, &card->packet_work);  in if_spi_host_to_card()
995 	struct if_spi_card *card = dev_id;  in if_spi_host_interrupt()  local
997 	queue_work(card->workqueue, &card->packet_work);  in if_spi_host_interrupt()
1006 static int if_spi_init_card(struct if_spi_card *card)  in if_spi_init_card()  argument
1008 	struct lbs_private *priv = card->priv;  in if_spi_init_card()
1014 	err = spu_init(card, card->pdata->use_dummy_writes);  in if_spi_init_card()
1017 	err = spu_get_chip_revision(card, &card->card_id, &card->card_rev);  in if_spi_init_card()
1021 	err = spu_read_u32(card, IF_SPI_SCRATCH_4_REG, &scratch);  in if_spi_init_card()
1028 		/* Check if we support this card */  in if_spi_init_card()
1030 			if (card->card_id == fw_table[i].model)  in if_spi_init_card()
1035 				   card->card_id);  in if_spi_init_card()
1040 		err = lbs_get_firmware(&card->spi->dev, card->card_id,  in if_spi_init_card()
1052 				card->card_id, card->card_rev,  in if_spi_init_card()
1053 				card->spi->master->bus_num,  in if_spi_init_card()
1054 				card->spi->chip_select,  in if_spi_init_card()
1055 				card->spi->max_speed_hz);  in if_spi_init_card()
1056 		err = if_spi_prog_helper_firmware(card, helper);  in if_spi_init_card()
1059 		err = if_spi_prog_main_firmware(card, mainfw);  in if_spi_init_card()
1065 	err = spu_set_interrupt_mode(card, 0, 1);  in if_spi_init_card()
1075 	struct if_spi_card *card;  in if_spi_resume_worker()  local
1077 	card = container_of(work, struct if_spi_card, resume_work);  in if_spi_resume_worker()
1079 	if (card->suspended) {  in if_spi_resume_worker()
1080 		if (card->pdata->setup)  in if_spi_resume_worker()
1081 			card->pdata->setup(card->spi);  in if_spi_resume_worker()
1083 		/* Init card ... */  in if_spi_resume_worker()
1084 		if_spi_init_card(card);  in if_spi_resume_worker()
1086 		enable_irq(card->spi->irq);  in if_spi_resume_worker()
1089 		lbs_resume(card->priv);  in if_spi_resume_worker()
1091 		card->suspended = 0;  in if_spi_resume_worker()
1097 	struct if_spi_card *card;  in if_spi_probe()  local
1113 	/* Allocate card structure to represent this specific device */  in if_spi_probe()
1114 	card = kzalloc(sizeof(struct if_spi_card), GFP_KERNEL);  in if_spi_probe()
1115 	if (!card) {  in if_spi_probe()
1119 	spi_set_drvdata(spi, card);  in if_spi_probe()
1120 	card->pdata = pdata;  in if_spi_probe()
1121 	card->spi = spi;  in if_spi_probe()
1122 	card->prev_xfer_time = jiffies;  in if_spi_probe()
1124 	INIT_LIST_HEAD(&card->cmd_packet_list);  in if_spi_probe()
1125 	INIT_LIST_HEAD(&card->data_packet_list);  in if_spi_probe()
1126 	spin_lock_init(&card->buffer_lock);  in if_spi_probe()
1131 	err = if_spi_init_card(card);  in if_spi_probe()
1136 	 * Register our card with libertas.  in if_spi_probe()
1139 	priv = lbs_add_card(card, &spi->dev);  in if_spi_probe()
1144 	card->priv = priv;  in if_spi_probe()
1146 	priv->card = card;  in if_spi_probe()
1154 	card->workqueue = alloc_workqueue("libertas_spi", WQ_MEM_RECLAIM, 0);  in if_spi_probe()
1155 	if (!card->workqueue) {  in if_spi_probe()
1159 	INIT_WORK(&card->packet_work, if_spi_host_to_card_worker);  in if_spi_probe()
1160 	INIT_WORK(&card->resume_work, if_spi_resume_worker);  in if_spi_probe()
1163 			IRQF_TRIGGER_FALLING, "libertas_spi", card);  in if_spi_probe()
1170 	 * Start the card.  in if_spi_probe()
1184 	free_irq(spi->irq, card);  in if_spi_probe()
1186 	destroy_workqueue(card->workqueue);  in if_spi_probe()
1190 	free_if_spi_card(card);  in if_spi_probe()
1200 	struct if_spi_card *card = spi_get_drvdata(spi);  in libertas_spi_remove()  local
1201 	struct lbs_private *priv = card->priv;  in libertas_spi_remove()
1205 	cancel_work_sync(&card->resume_work);  in libertas_spi_remove()
1210 	free_irq(spi->irq, card);  in libertas_spi_remove()
1211 	destroy_workqueue(card->workqueue);  in libertas_spi_remove()
1212 	if (card->pdata->teardown)  in libertas_spi_remove()
1213 		card->pdata->teardown(spi);  in libertas_spi_remove()
1214 	free_if_spi_card(card);  in libertas_spi_remove()
1220 	struct if_spi_card *card = spi_get_drvdata(spi);  in if_spi_suspend()  local
1222 	if (!card->suspended) {  in if_spi_suspend()
1223 		lbs_suspend(card->priv);  in if_spi_suspend()
1224 		flush_workqueue(card->workqueue);  in if_spi_suspend()
1227 		if (card->pdata->teardown)  in if_spi_suspend()
1228 			card->pdata->teardown(spi);  in if_spi_suspend()
1229 		card->suspended = 1;  in if_spi_suspend()
1238 	struct if_spi_card *card = spi_get_drvdata(spi);  in if_spi_resume()  local
1241 	schedule_work(&card->resume_work);  in if_spi_resume()