diff options
Diffstat (limited to 'drivers/nfc')
| -rw-r--r-- | drivers/nfc/port100.c | 321 |
1 files changed, 317 insertions, 4 deletions
diff --git a/drivers/nfc/port100.c b/drivers/nfc/port100.c index 99a6dd79393d..8a0571eb2627 100644 --- a/drivers/nfc/port100.c +++ b/drivers/nfc/port100.c @@ -75,6 +75,11 @@ static u8 ack_frame[PORT100_FRAME_ACK_SIZE] = { #define PORT100_CMD_IN_SET_PROTOCOL 0x02 #define PORT100_CMD_IN_COMM_RF 0x04 +#define PORT100_CMD_TG_SET_RF 0x40 +#define PORT100_CMD_TG_SET_PROTOCOL 0x42 +#define PORT100_CMD_TG_SET_RF_OFF 0x46 +#define PORT100_CMD_TG_COMM_RF 0x48 + #define PORT100_CMD_SWITCH_RF 0x06 #define PORT100_CMD_RESPONSE(cmd) (cmd + 1) @@ -87,6 +92,9 @@ static u8 ack_frame[PORT100_FRAME_ACK_SIZE] = { #define PORT100_CMD_STATUS_OK 0x00 #define PORT100_CMD_STATUS_TIMEOUT 0x80 +#define PORT100_MDAA_TGT_HAS_BEEN_ACTIVATED_MASK 0x01 +#define PORT100_MDAA_TGT_WAS_ACTIVATED_MASK 0x02 + struct port100; typedef void (*port100_send_async_complete_t)(struct port100 *dev, void *arg, @@ -133,6 +141,41 @@ static const struct port100_in_rf_setting in_rf_settings[] = { }, }; +/** + * Setting sets structure for tg_set_rf command + * + * @tg_set_number: Represents the entry index in the port-100 RF Base Table. + * This table contains multiple RF setting sets required for RF + * communication. this field is used for both send and receive + * settings. + * + * @tg_comm_type: Sets the communication type to be used to send and receive + * data. + */ +struct port100_tg_rf_setting { + u8 tg_set_number; + u8 tg_comm_type; +} __packed; + +#define PORT100_COMM_TYPE_TG_106A 0x0B +#define PORT100_COMM_TYPE_TG_212F 0x0C +#define PORT100_COMM_TYPE_TG_424F 0x0D + +static const struct port100_tg_rf_setting tg_rf_settings[] = { + [NFC_DIGITAL_RF_TECH_106A] = { + .tg_set_number = 8, + .tg_comm_type = PORT100_COMM_TYPE_TG_106A, + }, + [NFC_DIGITAL_RF_TECH_212F] = { + .tg_set_number = 8, + .tg_comm_type = PORT100_COMM_TYPE_TG_212F, + }, + [NFC_DIGITAL_RF_TECH_424F] = { + .tg_set_number = 8, + .tg_comm_type = PORT100_COMM_TYPE_TG_424F, + }, +}; + #define PORT100_IN_PROT_INITIAL_GUARD_TIME 0x00 #define PORT100_IN_PROT_ADD_CRC 0x01 #define PORT100_IN_PROT_CHECK_CRC 0x02 @@ -156,6 +199,13 @@ static const struct port100_in_rf_setting in_rf_settings[] = { #define PORT100_IN_MAX_NUM_PROTOCOLS 19 +#define PORT100_TG_PROT_TU 0x00 +#define PORT100_TG_PROT_RF_OFF 0x01 +#define PORT100_TG_PROT_CRM 0x02 +#define PORT100_TG_PROT_END 0x03 + +#define PORT100_TG_MAX_NUM_PROTOCOLS 3 + struct port100_protocol { u8 number; u8 value; @@ -282,6 +332,47 @@ in_protocols[][PORT100_IN_MAX_NUM_PROTOCOLS + 1] = { }, }; +static struct port100_protocol +tg_protocols[][PORT100_TG_MAX_NUM_PROTOCOLS + 1] = { + [NFC_DIGITAL_FRAMING_NFCA_SHORT] = { + { PORT100_TG_PROT_END, 0 }, + }, + [NFC_DIGITAL_FRAMING_NFCA_STANDARD] = { + { PORT100_TG_PROT_END, 0 }, + }, + [NFC_DIGITAL_FRAMING_NFCA_STANDARD_WITH_CRC_A] = { + { PORT100_TG_PROT_END, 0 }, + }, + [NFC_DIGITAL_FRAMING_NFCA_T1T] = { + { PORT100_TG_PROT_END, 0 }, + }, + [NFC_DIGITAL_FRAMING_NFCA_T2T] = { + { PORT100_TG_PROT_END, 0 }, + }, + [NFC_DIGITAL_FRAMING_NFCA_NFC_DEP] = { + { PORT100_TG_PROT_TU, 1 }, + { PORT100_TG_PROT_RF_OFF, 0 }, + { PORT100_TG_PROT_CRM, 7 }, + { PORT100_TG_PROT_END, 0 }, + }, + [NFC_DIGITAL_FRAMING_NFCF] = { + { PORT100_TG_PROT_END, 0 }, + }, + [NFC_DIGITAL_FRAMING_NFCF_T3T] = { + { PORT100_TG_PROT_END, 0 }, + }, + [NFC_DIGITAL_FRAMING_NFCF_NFC_DEP] = { + { PORT100_TG_PROT_TU, 1 }, + { PORT100_TG_PROT_RF_OFF, 0 }, + { PORT100_TG_PROT_CRM, 7 }, + { PORT100_TG_PROT_END, 0 }, + }, + [NFC_DIGITAL_FRAMING_NFC_DEP_ACTIVATED] = { + { PORT100_TG_PROT_RF_OFF, 1 }, + { PORT100_TG_PROT_END, 0 }, + }, +}; + struct port100 { struct nfc_digital_dev *nfc_digital_dev; @@ -348,6 +439,14 @@ struct port100_tg_comm_rf_cmd { u8 data[]; } __packed; +struct port100_tg_comm_rf_res { + u8 comm_type; + u8 ar_status; + u8 target_activated; + __le32 status; + u8 data[]; +} __packed; + /* The rule: value + checksum = 0 */ static inline u8 port100_checksum(u16 value) { @@ -1002,17 +1101,176 @@ static int port100_in_send_cmd(struct nfc_digital_dev *ddev, port100_in_comm_rf_complete, cb_arg); } +static int port100_tg_set_rf(struct nfc_digital_dev *ddev, u8 rf) +{ + struct port100 *dev = nfc_digital_get_drvdata(ddev); + struct sk_buff *skb; + struct sk_buff *resp; + int rc; + + if (rf >= NFC_DIGITAL_RF_TECH_LAST) + return -EINVAL; + + skb = port100_alloc_skb(dev, sizeof(struct port100_tg_rf_setting)); + if (!skb) + return -ENOMEM; + + memcpy(skb_put(skb, sizeof(struct port100_tg_rf_setting)), + &tg_rf_settings[rf], + sizeof(struct port100_tg_rf_setting)); + + resp = port100_send_cmd_sync(dev, PORT100_CMD_TG_SET_RF, skb); + + if (IS_ERR(resp)) + return PTR_ERR(resp); + + rc = resp->data[0]; + + dev_kfree_skb(resp); + + return rc; +} + +static int port100_tg_set_framing(struct nfc_digital_dev *ddev, int param) +{ + struct port100 *dev = nfc_digital_get_drvdata(ddev); + struct port100_protocol *protocols; + struct sk_buff *skb; + struct sk_buff *resp; + int rc; + int num_protocols; + size_t size; + + if (param >= NFC_DIGITAL_FRAMING_LAST) + return -EINVAL; + + protocols = tg_protocols[param]; + + num_protocols = 0; + while (protocols[num_protocols].number != PORT100_TG_PROT_END) + num_protocols++; + + if (!num_protocols) + return 0; + + size = sizeof(struct port100_protocol) * num_protocols; + + skb = port100_alloc_skb(dev, size); + if (!skb) + return -ENOMEM; + + memcpy(skb_put(skb, size), protocols, size); + + resp = port100_send_cmd_sync(dev, PORT100_CMD_TG_SET_PROTOCOL, skb); + + if (IS_ERR(resp)) + return PTR_ERR(resp); + + rc = resp->data[0]; + + dev_kfree_skb(resp); + + return rc; +} + static int port100_tg_configure_hw(struct nfc_digital_dev *ddev, int type, int param) { - return -EOPNOTSUPP; + if (type == NFC_DIGITAL_CONFIG_RF_TECH) + return port100_tg_set_rf(ddev, param); + + if (type == NFC_DIGITAL_CONFIG_FRAMING) + return port100_tg_set_framing(ddev, param); + + return -EINVAL; +} + +static bool port100_tg_target_activated(struct port100 *dev, u8 tgt_activated) +{ + u8 mask; + + switch (dev->cmd_type) { + case PORT100_CMD_TYPE_0: + mask = PORT100_MDAA_TGT_HAS_BEEN_ACTIVATED_MASK; + break; + case PORT100_CMD_TYPE_1: + mask = PORT100_MDAA_TGT_HAS_BEEN_ACTIVATED_MASK | + PORT100_MDAA_TGT_WAS_ACTIVATED_MASK; + break; + default: + nfc_err(&dev->interface->dev, "Unknonwn command type.\n"); + return false; + } + + return ((tgt_activated & mask) == mask); +} + +static void port100_tg_comm_rf_complete(struct port100 *dev, void *arg, + struct sk_buff *resp) +{ + u32 status; + struct port100_cb_arg *cb_arg = arg; + nfc_digital_cmd_complete_t cb = cb_arg->complete_cb; + struct port100_tg_comm_rf_res *hdr; + + if (IS_ERR(resp)) + goto exit; + + hdr = (struct port100_tg_comm_rf_res *)resp->data; + + status = le32_to_cpu(hdr->status); + + if (cb_arg->mdaa && + !port100_tg_target_activated(dev, hdr->target_activated)) { + kfree_skb(resp); + resp = ERR_PTR(-ETIMEDOUT); + + goto exit; + } + + skb_pull(resp, sizeof(struct port100_tg_comm_rf_res)); + + if (status != PORT100_CMD_STATUS_OK) { + kfree_skb(resp); + + if (status == PORT100_CMD_STATUS_TIMEOUT) + resp = ERR_PTR(-ETIMEDOUT); + else + resp = ERR_PTR(-EIO); + } + +exit: + cb(dev->nfc_digital_dev, cb_arg->complete_arg, resp); + + kfree(cb_arg); } static int port100_tg_send_cmd(struct nfc_digital_dev *ddev, struct sk_buff *skb, u16 timeout, nfc_digital_cmd_complete_t cb, void *arg) { - return -EOPNOTSUPP; + struct port100 *dev = nfc_digital_get_drvdata(ddev); + struct port100_tg_comm_rf_cmd *hdr; + struct port100_cb_arg *cb_arg; + + cb_arg = kzalloc(sizeof(struct port100_cb_arg), GFP_KERNEL); + if (!cb_arg) + return -ENOMEM; + + cb_arg->complete_cb = cb; + cb_arg->complete_arg = arg; + + skb_push(skb, sizeof(struct port100_tg_comm_rf_cmd)); + + hdr = (struct port100_tg_comm_rf_cmd *)skb->data; + + memset(hdr, 0, sizeof(struct port100_tg_comm_rf_cmd)); + hdr->guard_time = cpu_to_le16(500); + hdr->send_timeout = cpu_to_le16(0xFFFF); + hdr->recv_timeout = cpu_to_le16(timeout); + + return port100_send_cmd_async(dev, PORT100_CMD_TG_COMM_RF, skb, + port100_tg_comm_rf_complete, cb_arg); } static int port100_listen_mdaa(struct nfc_digital_dev *ddev, @@ -1020,13 +1278,68 @@ static int port100_listen_mdaa(struct nfc_digital_dev *ddev, u16 timeout, nfc_digital_cmd_complete_t cb, void *arg) { - return -EOPNOTSUPP; + struct port100 *dev = nfc_digital_get_drvdata(ddev); + struct port100_tg_comm_rf_cmd *hdr; + struct port100_cb_arg *cb_arg; + struct sk_buff *skb; + int rc; + + rc = port100_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_RF_TECH, + NFC_DIGITAL_RF_TECH_106A); + if (rc) + return rc; + + rc = port100_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING, + NFC_DIGITAL_FRAMING_NFCA_NFC_DEP); + if (rc) + return rc; + + cb_arg = kzalloc(sizeof(struct port100_cb_arg), GFP_KERNEL); + if (!cb_arg) + return -ENOMEM; + + cb_arg->complete_cb = cb; + cb_arg->complete_arg = arg; + cb_arg->mdaa = 1; + + skb = port100_alloc_skb(dev, 0); + if (!skb) { + kfree(cb_arg); + return -ENOMEM; + } + + skb_push(skb, sizeof(struct port100_tg_comm_rf_cmd)); + hdr = (struct port100_tg_comm_rf_cmd *)skb->data; + + memset(hdr, 0, sizeof(struct port100_tg_comm_rf_cmd)); + + hdr->guard_time = 0; + hdr->send_timeout = cpu_to_le16(0xFFFF); + hdr->mdaa = 1; + hdr->nfca_param[0] = (params->sens_res >> 8) & 0xFF; + hdr->nfca_param[1] = params->sens_res & 0xFF; + memcpy(hdr->nfca_param + 2, params->nfcid1, 3); + hdr->nfca_param[5] = params->sel_res; + memcpy(hdr->nfcf_param, params->nfcid2, 8); + hdr->nfcf_param[16] = (params->sc >> 8) & 0xFF; + hdr->nfcf_param[17] = params->sc & 0xFF; + hdr->recv_timeout = cpu_to_le16(timeout); + + return port100_send_cmd_async(dev, PORT100_CMD_TG_COMM_RF, skb, + port100_tg_comm_rf_complete, cb_arg); } static int port100_listen(struct nfc_digital_dev *ddev, u16 timeout, nfc_digital_cmd_complete_t cb, void *arg) { - return -EOPNOTSUPP; + struct port100 *dev = nfc_digital_get_drvdata(ddev); + struct sk_buff *skb; + + skb = port100_alloc_skb(dev, 0); + if (!skb) + return -ENOMEM; + + return port100_tg_send_cmd(ddev, skb, timeout, cb, arg); } static struct nfc_digital_ops port100_digital_ops = { |