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
81 	list_for_each_entry_safe(packet, tmp, &card->cmd_packet_list, list) {  in free_if_spi_card()
85 	list_for_each_entry_safe(packet, tmp, &card->data_packet_list, list) {  in free_if_spi_card()
89 	kfree(card);  in free_if_spi_card()
126 static void spu_transaction_init(struct if_spi_card *card)  in spu_transaction_init()  argument
128 	if (!time_after(jiffies, card->prev_xfer_time + 1)) {  in spu_transaction_init()
137 static void spu_transaction_finish(struct if_spi_card *card)  in spu_transaction_finish()  argument
139 	card->prev_xfer_time = jiffies;  in spu_transaction_finish()
146 static int spu_write(struct if_spi_card *card, u16 reg, const u8 *buf, int len)  in spu_write()  argument
162 	spu_transaction_init(card);  in spu_write()
174 	err = spi_sync(card->spi, &m);  in spu_write()
175 	spu_transaction_finish(card);  in spu_write()
179 static inline int spu_write_u16(struct if_spi_card *card, u16 reg, u16 val)  in spu_write_u16()  argument
184 	return spu_write(card, reg, (u8 *)&buff, sizeof(u16));  in spu_write_u16()
199 static int spu_read(struct if_spi_card *card, u16 reg, u8 *buf, int len)  in spu_read()  argument
215 	spu_transaction_init(card);  in spu_read()
227 	delay = spu_reg_is_port_reg(reg) ? card->spu_port_delay :  in spu_read()
228 						card->spu_reg_delay;  in spu_read()
229 	if (card->use_dummy_writes) {  in spu_read()
245 	err = spi_sync(card->spi, &m);  in spu_read()
246 	spu_transaction_finish(card);  in spu_read()
251 static inline int spu_read_u16(struct if_spi_card *card, u16 reg, u16 *val)  in spu_read_u16()  argument
256 	ret = spu_read(card, reg, (u8 *)&buf, sizeof(buf));  in spu_read_u16()
266 static int spu_read_u32(struct if_spi_card *card, u16 reg, u32 *val)  in spu_read_u32()  argument
271 	err = spu_read(card, reg, (u8 *)&buf, sizeof(buf));  in spu_read_u32()
286 static int spu_wait_for_u16(struct if_spi_card *card, u16 reg,  in spu_wait_for_u16()  argument
293 		err = spu_read_u16(card, reg, &val);  in spu_wait_for_u16()
316 static int spu_wait_for_u32(struct if_spi_card *card, u32 reg, u32 target)  in spu_wait_for_u32()  argument
321 		err = spu_read_u32(card, reg, &val);  in spu_wait_for_u32()
331 static int spu_set_interrupt_mode(struct if_spi_card *card,  in spu_set_interrupt_mode()  argument
342 		err = spu_write_u16(card, IF_SPI_HOST_INT_STATUS_MASK_REG, 0);  in spu_set_interrupt_mode()
346 		err = spu_write_u16(card, IF_SPI_HOST_INT_STATUS_MASK_REG,  in spu_set_interrupt_mode()
359 	 * are off, we need to set the "Card Interrupt Cause" register to  in spu_set_interrupt_mode()
360 	 * trigger a card interrupt.  in spu_set_interrupt_mode()
363 		err = spu_write_u16(card, IF_SPI_HOST_INT_CTRL_REG,  in spu_set_interrupt_mode()
371 		err = spu_write_u16(card, IF_SPI_HOST_INT_STATUS_MASK_REG, 0);  in spu_set_interrupt_mode()
378 static int spu_get_chip_revision(struct if_spi_card *card,  in spu_get_chip_revision()  argument
383 	err = spu_read_u32(card, IF_SPI_DEVICEID_CTRL_REG, &dev_ctrl);  in spu_get_chip_revision()
391 static int spu_set_bus_mode(struct if_spi_card *card, u16 mode)  in spu_set_bus_mode()  argument
396 	err = spu_write_u16(card, IF_SPI_SPU_BUS_MODE_REG, mode);  in spu_set_bus_mode()
400 	err = spu_read_u16(card, IF_SPI_SPU_BUS_MODE_REG, &rval);  in spu_set_bus_mode()
410 static int spu_init(struct if_spi_card *card, int use_dummy_writes)  in spu_init()  argument
419 	card->use_dummy_writes = 0;  in spu_init()
420 	err = spu_set_bus_mode(card,  in spu_init()
426 	card->spu_port_delay = 1000;  in spu_init()
427 	card->spu_reg_delay = 1000;  in spu_init()
428 	err = spu_read_u32(card, IF_SPI_DELAY_READ_REG, &delay);  in spu_init()
431 	card->spu_port_delay = delay & 0x0000ffff;  in spu_init()
432 	card->spu_reg_delay = (delay & 0xffff0000) >> 16;  in spu_init()
436 		card->use_dummy_writes = 1;  in spu_init()
437 		err = spu_set_bus_mode(card,  in spu_init()
447 		    card->spu_port_delay, card->spu_reg_delay);  in spu_init()
455 static int if_spi_prog_helper_firmware(struct if_spi_card *card,  in if_spi_prog_helper_firmware()  argument
463 	err = spu_set_interrupt_mode(card, 1, 0);  in if_spi_prog_helper_firmware()
476 		err = spu_write_u16(card, IF_SPI_SCRATCH_1_REG,  in if_spi_prog_helper_firmware()
481 		err = spu_wait_for_u16(card, IF_SPI_HOST_INT_STATUS_REG,  in if_spi_prog_helper_firmware()
495 		err = spu_write(card, IF_SPI_CMD_RDWRPORT_REG,  in if_spi_prog_helper_firmware()
501 		err = spu_write_u16(card, IF_SPI_HOST_INT_STATUS_REG, 0);  in if_spi_prog_helper_firmware()
504 		err = spu_write_u16(card, IF_SPI_CARD_INT_CAUSE_REG,  in if_spi_prog_helper_firmware()
517 	err = spu_write_u16(card, IF_SPI_SCRATCH_1_REG, FIRMWARE_DNLD_OK);  in if_spi_prog_helper_firmware()
520 	err = spu_write_u16(card, IF_SPI_HOST_INT_STATUS_REG, 0);  in if_spi_prog_helper_firmware()
523 	err = spu_write_u16(card, IF_SPI_CARD_INT_CAUSE_REG,  in if_spi_prog_helper_firmware()
536 static int if_spi_prog_main_firmware_check_len(struct if_spi_card *card,  in if_spi_prog_main_firmware_check_len()  argument
546 	err = spu_wait_for_u16(card, IF_SPI_HOST_INT_STATUS_REG,  in if_spi_prog_main_firmware_check_len()
555 	err = spu_read_u16(card, IF_SPI_SCRATCH_1_REG, &len);  in if_spi_prog_main_firmware_check_len()
574 static int if_spi_prog_main_firmware(struct if_spi_card *card,  in if_spi_prog_main_firmware()  argument
577 	struct lbs_private *priv = card->priv;  in if_spi_prog_main_firmware()
583 	err = spu_set_interrupt_mode(card, 1, 0);  in if_spi_prog_main_firmware()
587 	err = spu_wait_for_u16(card, IF_SPI_SCRATCH_1_REG, 0, 0);  in if_spi_prog_main_firmware()
599 	while ((len = if_spi_prog_main_firmware_check_len(card, &crc_err))) {  in if_spi_prog_main_firmware()
626 			memset(card->cmd_buffer, 0, len);  in if_spi_prog_main_firmware()
627 			memcpy(card->cmd_buffer, fw, bytes);  in if_spi_prog_main_firmware()
629 			memcpy(card->cmd_buffer, fw, len);  in if_spi_prog_main_firmware()
631 		err = spu_write_u16(card, IF_SPI_HOST_INT_STATUS_REG, 0);  in if_spi_prog_main_firmware()
634 		err = spu_write(card, IF_SPI_CMD_RDWRPORT_REG,  in if_spi_prog_main_firmware()
635 				card->cmd_buffer, len);  in if_spi_prog_main_firmware()
638 		err = spu_write_u16(card, IF_SPI_CARD_INT_CAUSE_REG ,  in if_spi_prog_main_firmware()
649 	err = spu_wait_for_u32(card, IF_SPI_SCRATCH_4_REG,  in if_spi_prog_main_firmware()
669 /* Move a command from the card to the host */
670 static int if_spi_c2h_cmd(struct if_spi_card *card)  in if_spi_c2h_cmd()  argument
672 	struct lbs_private *priv = card->priv;  in if_spi_c2h_cmd()
693 	err = spu_read_u16(card, IF_SPI_SCRATCH_2_REG, &len);  in if_spi_c2h_cmd()
697 		netdev_err(priv->dev, "%s: error: card has no data for host\n",  in if_spi_c2h_cmd()
710 	err = spu_read(card, IF_SPI_CMD_RDWRPORT_REG,  in if_spi_c2h_cmd()
711 				card->cmd_buffer, ALIGN(len, 4));  in if_spi_c2h_cmd()
719 	memcpy(priv->resp_buf[i], card->cmd_buffer, len);  in if_spi_c2h_cmd()
730 /* Move data from the card to the host */
731 static int if_spi_c2h_data(struct if_spi_card *card)  in if_spi_c2h_data()  argument
733 	struct lbs_private *priv = card->priv;  in if_spi_c2h_data()
740 	err = spu_read_u16(card, IF_SPI_SCRATCH_1_REG, &len);  in if_spi_c2h_data()
744 		netdev_err(priv->dev, "%s: error: card has no data for host\n",  in if_spi_c2h_data()
750 			   "%s: error: card has %d bytes of data, but our maximum skb size is %zu\n",  in if_spi_c2h_data()
766 	err = spu_read(card, IF_SPI_DATA_RDWRPORT_REG, data, ALIGN(len, 4));  in if_spi_c2h_data()
773 	err = lbs_process_rxed_packet(card->priv, skb);  in if_spi_c2h_data()
783 /* Move data or a command from the host to the card. */
784 static void if_spi_h2c(struct if_spi_card *card,  in if_spi_h2c()  argument
787 	struct lbs_private *priv = card->priv;  in if_spi_h2c()
805 	/* Write the data to the card */  in if_spi_h2c()
806 	err = spu_write(card, port_reg, packet->buffer, packet->blen);  in if_spi_h2c()
817 /* Inform the host about a card event */
818 static void if_spi_e2h(struct if_spi_card *card)  in if_spi_e2h()  argument
822 	struct lbs_private *priv = card->priv;  in if_spi_e2h()
824 	err = spu_read_u32(card, IF_SPI_SCRATCH_3_REG, &cause);  in if_spi_e2h()
828 	/* re-enable the card event interrupt */  in if_spi_e2h()
829 	err = spu_write_u16(card, IF_SPI_HOST_INT_STATUS_REG,  in if_spi_e2h()
834 	/* generate a card interrupt */  in if_spi_e2h()
835 	err = spu_write_u16(card, IF_SPI_CARD_INT_CAUSE_REG,  in if_spi_e2h()
849 	struct if_spi_card *card;  in if_spi_host_to_card_worker()  local
855 	card = container_of(work, struct if_spi_card, packet_work);  in if_spi_host_to_card_worker()
856 	priv = card->priv;  in if_spi_host_to_card_worker()
862 	err = spu_read_u16(card, IF_SPI_HOST_INT_STATUS_REG,  in if_spi_host_to_card_worker()
870 		err = if_spi_c2h_cmd(card);  in if_spi_host_to_card_worker()
875 		err = if_spi_c2h_data(card);  in if_spi_host_to_card_worker()
881 	 * workaround: in PS mode, the card does not set the Command  in if_spi_host_to_card_worker()
885 	   (card->priv->psstate != PS_STATE_FULL_POWER &&  in if_spi_host_to_card_worker()
889 		 * if there was a previous command sent, the card has  in if_spi_host_to_card_worker()
894 		lbs_host_to_card_done(card->priv);  in if_spi_host_to_card_worker()
898 		spin_lock_irqsave(&card->buffer_lock, flags);  in if_spi_host_to_card_worker()
899 		if (!list_empty(&card->cmd_packet_list)) {  in if_spi_host_to_card_worker()
900 			packet = (struct if_spi_packet *)(card->  in if_spi_host_to_card_worker()
904 		spin_unlock_irqrestore(&card->buffer_lock, flags);  in if_spi_host_to_card_worker()
907 			if_spi_h2c(card, packet, MVMS_CMD);  in if_spi_host_to_card_worker()
912 		spin_lock_irqsave(&card->buffer_lock, flags);  in if_spi_host_to_card_worker()
913 		if (!list_empty(&card->data_packet_list)) {  in if_spi_host_to_card_worker()
914 			packet = (struct if_spi_packet *)(card->  in if_spi_host_to_card_worker()
918 		spin_unlock_irqrestore(&card->buffer_lock, flags);  in if_spi_host_to_card_worker()
921 			if_spi_h2c(card, packet, MVMS_DAT);  in if_spi_host_to_card_worker()
924 		if_spi_e2h(card);  in if_spi_host_to_card_worker()
932  * Host to Card
942 	struct if_spi_card *card = priv->card;  in if_spi_host_to_card()  local
965 		spin_lock_irqsave(&card->buffer_lock, flags);  in if_spi_host_to_card()
966 		list_add_tail(&packet->list, &card->cmd_packet_list);  in if_spi_host_to_card()
967 		spin_unlock_irqrestore(&card->buffer_lock, flags);  in if_spi_host_to_card()
971 		spin_lock_irqsave(&card->buffer_lock, flags);  in if_spi_host_to_card()
972 		list_add_tail(&packet->list, &card->data_packet_list);  in if_spi_host_to_card()
973 		spin_unlock_irqrestore(&card->buffer_lock, flags);  in if_spi_host_to_card()
984 	queue_work(card->workqueue, &card->packet_work);  in if_spi_host_to_card()
997 	struct if_spi_card *card = dev_id;  in if_spi_host_interrupt()  local
999 	queue_work(card->workqueue, &card->packet_work);  in if_spi_host_interrupt()
1008 static int if_spi_init_card(struct if_spi_card *card)  in if_spi_init_card()  argument
1010 	struct lbs_private *priv = card->priv;  in if_spi_init_card()
1016 	err = spu_init(card, card->pdata->use_dummy_writes);  in if_spi_init_card()
1019 	err = spu_get_chip_revision(card, &card->card_id, &card->card_rev);  in if_spi_init_card()
1023 	err = spu_read_u32(card, IF_SPI_SCRATCH_4_REG, &scratch);  in if_spi_init_card()
1030 		/* Check if we support this card */  in if_spi_init_card()
1032 			if (card->card_id == fw_table[i].model)  in if_spi_init_card()
1037 				   card->card_id);  in if_spi_init_card()
1042 		err = lbs_get_firmware(&card->spi->dev, card->card_id,  in if_spi_init_card()
1054 				card->card_id, card->card_rev,  in if_spi_init_card()
1055 				card->spi->controller->bus_num,  in if_spi_init_card()
1056 				spi_get_chipselect(card->spi, 0),  in if_spi_init_card()
1057 				card->spi->max_speed_hz);  in if_spi_init_card()
1058 		err = if_spi_prog_helper_firmware(card, helper);  in if_spi_init_card()
1061 		err = if_spi_prog_main_firmware(card, mainfw);  in if_spi_init_card()
1067 	err = spu_set_interrupt_mode(card, 0, 1);  in if_spi_init_card()
1077 	struct if_spi_card *card;  in if_spi_resume_worker()  local
1079 	card = container_of(work, struct if_spi_card, resume_work);  in if_spi_resume_worker()
1081 	if (card->suspended) {  in if_spi_resume_worker()
1082 		if (card->pdata->setup)  in if_spi_resume_worker()
1083 			card->pdata->setup(card->spi);  in if_spi_resume_worker()
1085 		/* Init card ... */  in if_spi_resume_worker()
1086 		if_spi_init_card(card);  in if_spi_resume_worker()
1088 		enable_irq(card->spi->irq);  in if_spi_resume_worker()
1091 		lbs_resume(card->priv);  in if_spi_resume_worker()
1093 		card->suspended = 0;  in if_spi_resume_worker()
1099 	struct if_spi_card *card;  in if_spi_probe()  local
1115 	/* Allocate card structure to represent this specific device */  in if_spi_probe()
1116 	card = kzalloc(sizeof(struct if_spi_card), GFP_KERNEL);  in if_spi_probe()
1117 	if (!card) {  in if_spi_probe()
1121 	spi_set_drvdata(spi, card);  in if_spi_probe()
1122 	card->pdata = pdata;  in if_spi_probe()
1123 	card->spi = spi;  in if_spi_probe()
1124 	card->prev_xfer_time = jiffies;  in if_spi_probe()
1126 	INIT_LIST_HEAD(&card->cmd_packet_list);  in if_spi_probe()
1127 	INIT_LIST_HEAD(&card->data_packet_list);  in if_spi_probe()
1128 	spin_lock_init(&card->buffer_lock);  in if_spi_probe()
1133 	err = if_spi_init_card(card);  in if_spi_probe()
1138 	 * Register our card with libertas.  in if_spi_probe()
1141 	priv = lbs_add_card(card, &spi->dev);  in if_spi_probe()
1146 	card->priv = priv;  in if_spi_probe()
1148 	priv->card = card;  in if_spi_probe()
1156 	card->workqueue = alloc_workqueue("libertas_spi", WQ_MEM_RECLAIM, 0);  in if_spi_probe()
1157 	if (!card->workqueue) {  in if_spi_probe()
1161 	INIT_WORK(&card->packet_work, if_spi_host_to_card_worker);  in if_spi_probe()
1162 	INIT_WORK(&card->resume_work, if_spi_resume_worker);  in if_spi_probe()
1165 			IRQF_TRIGGER_FALLING, "libertas_spi", card);  in if_spi_probe()
1172 	 * Start the card.  in if_spi_probe()
1186 	free_irq(spi->irq, card);  in if_spi_probe()
1188 	destroy_workqueue(card->workqueue);  in if_spi_probe()
1192 	free_if_spi_card(card);  in if_spi_probe()
1202 	struct if_spi_card *card = spi_get_drvdata(spi);  in libertas_spi_remove()  local
1203 	struct lbs_private *priv = card->priv;  in libertas_spi_remove()
1207 	cancel_work_sync(&card->resume_work);  in libertas_spi_remove()
1212 	free_irq(spi->irq, card);  in libertas_spi_remove()
1213 	destroy_workqueue(card->workqueue);  in libertas_spi_remove()
1214 	if (card->pdata->teardown)  in libertas_spi_remove()
1215 		card->pdata->teardown(spi);  in libertas_spi_remove()
1216 	free_if_spi_card(card);  in libertas_spi_remove()
1222 	struct if_spi_card *card = spi_get_drvdata(spi);  in if_spi_suspend()  local
1224 	if (!card->suspended) {  in if_spi_suspend()
1225 		lbs_suspend(card->priv);  in if_spi_suspend()
1226 		flush_workqueue(card->workqueue);  in if_spi_suspend()
1229 		if (card->pdata->teardown)  in if_spi_suspend()
1230 			card->pdata->teardown(spi);  in if_spi_suspend()
1231 		card->suspended = 1;  in if_spi_suspend()
1240 	struct if_spi_card *card = spi_get_drvdata(spi);  in if_spi_resume()  local
1243 	schedule_work(&card->resume_work);  in if_spi_resume()