255 static int st95hf_send_recv_cmd(struct st95hf_context *st95context,  in st95hf_send_recv_cmd()  argument
263 	struct device *dev = &st95context->spicontext.spidev->dev;  in st95hf_send_recv_cmd()
286 	ret = st95hf_spi_send(&st95context->spicontext,  in st95hf_send_recv_cmd()
298 		ret = st95hf_spi_recv_response(&st95context->spicontext,  in st95hf_send_recv_cmd()
316 static int st95hf_echo_command(struct st95hf_context *st95context)  in st95hf_echo_command()  argument
321 	result = st95hf_send_recv_cmd(st95context, CMD_ECHO, 0, NULL, false);  in st95hf_echo_command()
326 	result = st95hf_spi_recv_echo_res(&st95context->spicontext,  in st95hf_echo_command()
329 		dev_err(&st95context->spicontext.spidev->dev,  in st95hf_echo_command()
337 	dev_err(&st95context->spicontext.spidev->dev, "err: echo res is 0x%x\n",  in st95hf_echo_command()
485 static int st95hf_send_spi_reset_sequence(struct st95hf_context *st95context)  in st95hf_send_spi_reset_sequence()  argument
490 	result = st95hf_spi_send(&st95context->spicontext,  in st95hf_send_spi_reset_sequence()
495 		dev_err(&st95context->spicontext.spidev->dev,  in st95hf_send_spi_reset_sequence()
504 	st95hf_send_st95enable_negativepulse(st95context);  in st95hf_send_spi_reset_sequence()
512 static int st95hf_por_sequence(struct st95hf_context *st95context)  in st95hf_por_sequence()  argument
517 	st95hf_send_st95enable_negativepulse(st95context);  in st95hf_por_sequence()
522 		result = st95hf_echo_command(st95context);  in st95hf_por_sequence()
524 		dev_dbg(&st95context->spicontext.spidev->dev,  in st95hf_por_sequence()
533 			st95hf_send_st95enable_negativepulse(st95context);  in st95hf_por_sequence()
535 			st95hf_send_spi_reset_sequence(st95context);  in st95hf_por_sequence()
544 static int iso14443_config_fdt(struct st95hf_context *st95context, int wtxm)  in iso14443_config_fdt()  argument
547 	struct device *dev = &st95context->spicontext.spidev->dev;  in iso14443_config_fdt()
548 	struct nfc_digital_dev *nfcddev = st95context->ddev;  in iso14443_config_fdt()
555 	    st95context->fwi < 4)  in iso14443_config_fdt()
556 		st95context->fwi = 4;  in iso14443_config_fdt()
560 		new_params[0].new_param_val = st95context->fwi;  in iso14443_config_fdt()
569 		result = st95hf_send_recv_cmd(st95context,  in iso14443_config_fdt()
581 		result = secondary_configuration_type4a(st95context);  in iso14443_config_fdt()
589 		result = st95hf_send_recv_cmd(st95context,  in iso14443_config_fdt()
601 		result = secondary_configuration_type4b(st95context);  in iso14443_config_fdt()
1081 	struct st95hf_context *st95context;  in st95hf_probe()  local
1086 	st95context = devm_kzalloc(&nfc_spi_dev->dev,  in st95hf_probe()
1089 	if (!st95context)  in st95hf_probe()
1092 	spicontext = &st95context->spicontext;  in st95hf_probe()
1096 	st95context->fwi =  in st95hf_probe()
1100 		st95context->st95hf_supply =  in st95hf_probe()
1103 		if (IS_ERR(st95context->st95hf_supply)) {  in st95hf_probe()
1105 			return PTR_ERR(st95context->st95hf_supply);  in st95hf_probe()
1108 		ret = regulator_enable(st95context->st95hf_supply);  in st95hf_probe()
1124 	st95context->enable_gpio =  in st95hf_probe()
1128 	if (!gpio_is_valid(st95context->enable_gpio)) {  in st95hf_probe()
1130 		ret = st95context->enable_gpio;  in st95hf_probe()
1134 	ret = devm_gpio_request_one(&nfc_spi_dev->dev, st95context->enable_gpio,  in st95hf_probe()
1147 					      (void *)st95context) < 0) {  in st95hf_probe()
1164 	ret = st95hf_send_spi_reset_sequence(st95context);  in st95hf_probe()
1171 	ret = st95hf_por_sequence(st95context);  in st95hf_probe()
1178 	st95context->ddev = nfc_digital_allocate_device(&st95hf_nfc_digital_ops,  in st95hf_probe()
1183 	if (!st95context->ddev) {  in st95hf_probe()
1188 	st95context->nfcdev = st95context->ddev->nfc_dev;  in st95hf_probe()
1189 	nfc_digital_set_parent_dev(st95context->ddev, &nfc_spi_dev->dev);  in st95hf_probe()
1191 	ret =  nfc_digital_register_device(st95context->ddev);  in st95hf_probe()
1193 		dev_err(&st95context->nfcdev->dev, "st95hf registration failed\n");  in st95hf_probe()
1198 	nfc_digital_set_drvdata(st95context->ddev, st95context);  in st95hf_probe()
1200 	sema_init(&st95context->exchange_lock, 1);  in st95hf_probe()
1201 	mutex_init(&st95context->rm_lock);  in st95hf_probe()
1206 	nfc_digital_free_device(st95context->ddev);  in st95hf_probe()
1208 	if (st95context->st95hf_supply)  in st95hf_probe()
1209 		regulator_disable(st95context->st95hf_supply);  in st95hf_probe()