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NFC: trf7970a: Add Target Mode Support 

Add target mode support to the trf7970a
NFC driver.  This effectively enables full
Peer-to-Peer support.

To handle changing framing between sending
a response frame and receiving the subsequent
request frame, most of the framing changes
take effect in the interrupt handler and not
in trf7970a_tg_config_framing().

Signed-off-by: Mark A. Greer <mgreer@animalcreek.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
hifive-unleashed-5.1
Mark A. Greer 2014-09-02 15:12:45 -07:00 committed by Samuel Ortiz
parent 1961843cee
commit 13b4272a82
1 changed files with 341 additions and 37 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

378
drivers/nfc/trf7970a.c
View File

@ -62,7 +62,7 @@
* way to abort a command that's already been sent to the tag is so turn
* off power to the tag. If we do that, though, we'd have to go through
* the entire anticollision procedure again but the digital layer doesn't
* support that. So, if an abort is received before trf7970a_in_send_cmd()
* support that. So, if an abort is received before trf7970a_send_cmd()
* has sent the command to the tag, it simply returns -ECANCELED. If the
* command has already been sent to the tag, then the driver continues
* normally and recieves the response data (or error) but just before
@ -121,7 +121,7 @@
#define TRF7970A_SUPPORTED_PROTOCOLS \
(NFC_PROTO_MIFARE_MASK | NFC_PROTO_ISO14443_MASK | \
NFC_PROTO_ISO14443_B_MASK | NFC_PROTO_FELICA_MASK | \
NFC_PROTO_ISO15693_MASK)
NFC_PROTO_ISO15693_MASK | NFC_PROTO_NFC_DEP_MASK)
#define TRF7970A_AUTOSUSPEND_DELAY 30000 /* 30 seconds */
@ -240,6 +240,15 @@
#define TRF7970A_ISO_CTRL_14443B_848 0x0f
#define TRF7970A_ISO_CTRL_FELICA_212 0x1a
#define TRF7970A_ISO_CTRL_FELICA_424 0x1b
#define TRF7970A_ISO_CTRL_NFC_NFCA_106 0x01
#define TRF7970A_ISO_CTRL_NFC_NFCF_212 0x02
#define TRF7970A_ISO_CTRL_NFC_NFCF_424 0x03
#define TRF7970A_ISO_CTRL_NFC_CE_14443A 0x00
#define TRF7970A_ISO_CTRL_NFC_CE_14443B 0x01
#define TRF7970A_ISO_CTRL_NFC_CE BIT(2)
#define TRF7970A_ISO_CTRL_NFC_ACTIVE BIT(3)
#define TRF7970A_ISO_CTRL_NFC_INITIATOR BIT(4)
#define TRF7970A_ISO_CTRL_NFC_NFC_CE_MODE BIT(5)
#define TRF7970A_ISO_CTRL_RFID BIT(5)
#define TRF7970A_ISO_CTRL_DIR_MODE BIT(6)
#define TRF7970A_ISO_CTRL_RX_CRC_N BIT(7) /* true == No CRC */
@ -265,12 +274,32 @@
#define TRF7970A_MODULATOR_EN_OOK BIT(6)
#define TRF7970A_MODULATOR_27MHZ BIT(7)
#define TRF7970A_RX_SPECIAL_SETTINGS_NO_LIM BIT(0)
#define TRF7970A_RX_SPECIAL_SETTINGS_AGCR BIT(1)
#define TRF7970A_RX_SPECIAL_SETTINGS_GD_0DB (0x0 << 2)
#define TRF7970A_RX_SPECIAL_SETTINGS_GD_5DB (0x1 << 2)
#define TRF7970A_RX_SPECIAL_SETTINGS_GD_10DB (0x2 << 2)
#define TRF7970A_RX_SPECIAL_SETTINGS_GD_15DB (0x3 << 2)
#define TRF7970A_RX_SPECIAL_SETTINGS_HBT BIT(4)
#define TRF7970A_RX_SPECIAL_SETTINGS_M848 BIT(5)
#define TRF7970A_RX_SPECIAL_SETTINGS_C424 BIT(6)
#define TRF7970A_RX_SPECIAL_SETTINGS_C212 BIT(7)
#define TRF7970A_REG_IO_CTRL_VRS(v) ((v) & 0x07)
#define TRF7970A_REG_IO_CTRL_IO_LOW BIT(5)
#define TRF7970A_REG_IO_CTRL_EN_EXT_PA BIT(6)
#define TRF7970A_REG_IO_CTRL_AUTO_REG BIT(7)
/* IRQ Status Register Bits */
#define TRF7970A_IRQ_STATUS_NORESP BIT(0) /* ISO15693 only */
#define TRF7970A_IRQ_STATUS_NFC_COL_ERROR BIT(0)
#define TRF7970A_IRQ_STATUS_COL BIT(1)
#define TRF7970A_IRQ_STATUS_FRAMING_EOF_ERROR BIT(2)
#define TRF7970A_IRQ_STATUS_NFC_RF BIT(2)
#define TRF7970A_IRQ_STATUS_PARITY_ERROR BIT(3)
#define TRF7970A_IRQ_STATUS_NFC_SDD BIT(3)
#define TRF7970A_IRQ_STATUS_CRC_ERROR BIT(4)
#define TRF7970A_IRQ_STATUS_NFC_PROTO_ERROR BIT(4)
#define TRF7970A_IRQ_STATUS_FIFO BIT(5)
#define TRF7970A_IRQ_STATUS_SRX BIT(6)
#define TRF7970A_IRQ_STATUS_TX BIT(7)
@ -301,6 +330,16 @@
#define TRF7970A_ADJUTABLE_FIFO_IRQ_LEVELS_WLL_16 0x2
#define TRF7970A_ADJUTABLE_FIFO_IRQ_LEVELS_WLL_32 0x3
#define TRF7970A_NFC_LOW_FIELD_LEVEL_RFDET(v) ((v) & 0x07)
#define TRF7970A_NFC_LOW_FIELD_LEVEL_CLEX_DIS BIT(7)
#define TRF7970A_NFC_TARGET_LEVEL_RFDET(v) ((v) & 0x07)
#define TRF7970A_NFC_TARGET_LEVEL_HI_RF BIT(3)
#define TRF7970A_NFC_TARGET_LEVEL_SDD_EN BIT(3)
#define TRF7970A_NFC_TARGET_LEVEL_LD_S_4BYTES (0x0 << 6)
#define TRF7970A_NFC_TARGET_LEVEL_LD_S_7BYTES (0x1 << 6)
#define TRF7970A_NFC_TARGET_LEVEL_LD_S_10BYTES (0x2 << 6)
#define TRF7970A_FIFO_STATUS_OVERFLOW BIT(7)
/* NFC (ISO/IEC 14443A) Type 2 Tag commands */
@ -345,6 +384,7 @@ enum trf7970a_state {
TRF7970A_ST_WAIT_FOR_RX_DATA,
TRF7970A_ST_WAIT_FOR_RX_DATA_CONT,
TRF7970A_ST_WAIT_TO_ISSUE_EOF,
TRF7970A_ST_LISTENING,
TRF7970A_ST_MAX
};
@ -355,6 +395,7 @@ struct trf7970a {
struct regulator *regulator;
struct nfc_digital_dev *ddev;
u32 quirks;
bool is_initiator;
bool aborting;
struct sk_buff *tx_skb;
struct sk_buff *rx_skb;
@ -694,7 +735,7 @@ static irqreturn_t trf7970a_irq(int irq, void *dev_id)
{
struct trf7970a *trf = dev_id;
int ret;
u8 status, fifo_bytes;
u8 status, fifo_bytes, iso_ctrl;
mutex_lock(&trf->lock);
@ -720,12 +761,12 @@ static irqreturn_t trf7970a_irq(int irq, void *dev_id)
switch (trf->state) {
case TRF7970A_ST_IDLE:
case TRF7970A_ST_IDLE_RX_BLOCKED:
/* If getting interrupts caused by RF noise, turn off the
* receiver to avoid unnecessary interrupts. It will be
* turned back on in trf7970a_in_send_cmd() when the next
* command is issued.
/* If initiator and getting interrupts caused by RF noise,
* turn off the receiver to avoid unnecessary interrupts.
* It will be turned back on in trf7970a_send_cmd() when
* the next command is issued.
*/
if (status & TRF7970A_IRQ_STATUS_ERROR) {
if (trf->is_initiator && (status & TRF7970A_IRQ_STATUS_ERROR)) {
trf7970a_cmd(trf, TRF7970A_CMD_BLOCK_RX);
trf->state = TRF7970A_ST_IDLE_RX_BLOCKED;
}
@ -757,7 +798,10 @@ static irqreturn_t trf7970a_irq(int irq, void *dev_id)
trf7970a_send_err_upstream(trf, ret);
else if (!fifo_bytes)
trf7970a_cmd(trf, TRF7970A_CMD_FIFO_RESET);
} else if (status == TRF7970A_IRQ_STATUS_TX) {
} else if ((status == TRF7970A_IRQ_STATUS_TX) ||
(!trf->is_initiator &&
(status == (TRF7970A_IRQ_STATUS_TX |
TRF7970A_IRQ_STATUS_NFC_RF)))) {
trf7970a_cmd(trf, TRF7970A_CMD_FIFO_RESET);
if (!trf->timeout) {
@ -767,6 +811,45 @@ static irqreturn_t trf7970a_irq(int irq, void *dev_id)
trf7970a_send_upstream(trf);
break;
}
if (trf->is_initiator)
break;
iso_ctrl = trf->iso_ctrl;
switch (trf->framing) {
case NFC_DIGITAL_FRAMING_NFCA_STANDARD:
trf->tx_cmd = TRF7970A_CMD_TRANSMIT_NO_CRC;
iso_ctrl |= TRF7970A_ISO_CTRL_RX_CRC_N;
trf->iso_ctrl = 0xff; /* Force ISO_CTRL write */
break;
case NFC_DIGITAL_FRAMING_NFCA_STANDARD_WITH_CRC_A:
trf->tx_cmd = TRF7970A_CMD_TRANSMIT;
iso_ctrl &= ~TRF7970A_ISO_CTRL_RX_CRC_N;
trf->iso_ctrl = 0xff; /* Force ISO_CTRL write */
break;
case NFC_DIGITAL_FRAMING_NFCA_ANTICOL_COMPLETE:
ret = trf7970a_write(trf,
TRF7970A_SPECIAL_FCN_REG1,
TRF7970A_SPECIAL_FCN_REG1_14_ANTICOLL);
if (ret)
return ret;
trf->special_fcn_reg1 =
TRF7970A_SPECIAL_FCN_REG1_14_ANTICOLL;
break;
default:
break;
}
if (iso_ctrl != trf->iso_ctrl) {
ret = trf7970a_write(trf, TRF7970A_ISO_CTRL,
iso_ctrl);
if (ret)
return ret;
trf->iso_ctrl = iso_ctrl;
}
} else {
trf7970a_send_err_upstream(trf, -EIO);
}
@ -775,6 +858,15 @@ static irqreturn_t trf7970a_irq(int irq, void *dev_id)
if (status != TRF7970A_IRQ_STATUS_TX)
trf7970a_send_err_upstream(trf, -EIO);
break;
case TRF7970A_ST_LISTENING:
if (status & TRF7970A_IRQ_STATUS_SRX) {
trf->ignore_timeout =
!cancel_delayed_work(&trf->timeout_work);
trf7970a_drain_fifo(trf, status);
} else if (!(status & TRF7970A_IRQ_STATUS_NFC_RF)) {
trf7970a_send_err_upstream(trf, -EIO);
}
break;
default:
dev_err(trf->dev, "%s - Driver in invalid state: %d\n",
__func__, trf->state);
@ -853,11 +945,6 @@ static int trf7970a_init(struct trf7970a *trf)
trf->modulator_sys_clk_ctrl = 0;
/* Must clear NFC Target Detection Level reg due to erratum */
ret = trf7970a_write(trf, TRF7970A_NFC_TARGET_LEVEL, 0);
if (ret)
goto err_out;
ret = trf7970a_write(trf, TRF7970A_ADJUTABLE_FIFO_IRQ_LEVELS,
TRF7970A_ADJUTABLE_FIFO_IRQ_LEVELS_WLH_96 |
TRF7970A_ADJUTABLE_FIFO_IRQ_LEVELS_WLL_32);
@ -958,6 +1045,8 @@ static int trf7970a_switch_rf(struct nfc_digital_dev *ddev, bool on)
/* FALLTHROUGH */
case TRF7970A_ST_IDLE:
case TRF7970A_ST_IDLE_RX_BLOCKED:
case TRF7970A_ST_WAIT_FOR_RX_DATA:
case TRF7970A_ST_WAIT_FOR_RX_DATA_CONT:
trf7970a_switch_rf_off(trf);
}
}
@ -1005,6 +1094,14 @@ static int trf7970a_in_config_rf_tech(struct trf7970a *trf, int tech)
trf->technology = tech;
/* If in initiator mode and not changing the RF tech due to a
* PSL sequence (indicated by 'trf->iso_ctrl == 0xff' from
* trf7970a_init()), clear the NFC Target Detection Level register
* due to erratum.
*/
if (trf->iso_ctrl == 0xff)
ret = trf7970a_write(trf, TRF7970A_NFC_TARGET_LEVEL, 0);
return ret;
}
@ -1063,6 +1160,8 @@ static int trf7970a_in_config_framing(struct trf7970a *trf, int framing)
case NFC_DIGITAL_FRAMING_NFCF_T3T:
case NFC_DIGITAL_FRAMING_ISO15693_INVENTORY:
case NFC_DIGITAL_FRAMING_ISO15693_T5T:
case NFC_DIGITAL_FRAMING_NFCA_NFC_DEP:
case NFC_DIGITAL_FRAMING_NFCF_NFC_DEP:
trf->tx_cmd = TRF7970A_CMD_TRANSMIT;
iso_ctrl &= ~TRF7970A_ISO_CTRL_RX_CRC_N;
break;
@ -1124,6 +1223,8 @@ static int trf7970a_in_configure_hw(struct nfc_digital_dev *ddev, int type,
mutex_lock(&trf->lock);
trf->is_initiator = true;
if ((trf->state == TRF7970A_ST_PWR_OFF) ||
(trf->state == TRF7970A_ST_RF_OFF)) {
ret = trf7970a_switch_rf_on(trf);
@ -1233,7 +1334,7 @@ static int trf7970a_per_cmd_config(struct trf7970a *trf, struct sk_buff *skb)
return 0;
}
static int trf7970a_in_send_cmd(struct nfc_digital_dev *ddev,
static int trf7970a_send_cmd(struct nfc_digital_dev *ddev,
struct sk_buff *skb, u16 timeout,
nfc_digital_cmd_complete_t cb, void *arg)
{
@ -1284,9 +1385,11 @@ static int trf7970a_in_send_cmd(struct nfc_digital_dev *ddev,
trf->state = TRF7970A_ST_IDLE;
}
ret = trf7970a_per_cmd_config(trf, skb);
if (ret)
goto out_err;
if (trf->is_initiator) {
ret = trf7970a_per_cmd_config(trf, skb);
if (ret)
goto out_err;
}
trf->ddev = ddev;
trf->tx_skb = skb;
@ -1335,35 +1438,229 @@ out_err:
return ret;
}
static int trf7970a_tg_configure_hw(struct nfc_digital_dev *ddev,
int type, int param)
static int trf7970a_tg_config_rf_tech(struct trf7970a *trf, int tech)
{
struct trf7970a *trf = nfc_digital_get_drvdata(ddev);
int ret = 0;
dev_dbg(trf->dev, "Unsupported interface\n");
dev_dbg(trf->dev, "rf technology: %d\n", tech);
return -EINVAL;
switch (tech) {
case NFC_DIGITAL_RF_TECH_106A:
trf->iso_ctrl_tech = TRF7970A_ISO_CTRL_NFC_NFC_CE_MODE |
TRF7970A_ISO_CTRL_NFC_CE |
TRF7970A_ISO_CTRL_NFC_CE_14443A;
trf->modulator_sys_clk_ctrl = TRF7970A_MODULATOR_DEPTH_OOK;
break;
case NFC_DIGITAL_RF_TECH_212F:
trf->iso_ctrl_tech = TRF7970A_ISO_CTRL_NFC_NFC_CE_MODE |
TRF7970A_ISO_CTRL_NFC_NFCF_212;
trf->modulator_sys_clk_ctrl = TRF7970A_MODULATOR_DEPTH_ASK10;
break;
case NFC_DIGITAL_RF_TECH_424F:
trf->iso_ctrl_tech = TRF7970A_ISO_CTRL_NFC_NFC_CE_MODE |
TRF7970A_ISO_CTRL_NFC_NFCF_424;
trf->modulator_sys_clk_ctrl = TRF7970A_MODULATOR_DEPTH_ASK10;
break;
default:
dev_dbg(trf->dev, "Unsupported rf technology: %d\n", tech);
return -EINVAL;
}
trf->technology = tech;
/* Normally we write the ISO_CTRL register in
* trf7970a_tg_config_framing() because the framing can change
* the value written. However, when sending a PSL RES,
* digital_tg_send_psl_res_complete() doesn't call
* trf7970a_tg_config_framing() so we must write the register
* here.
*/
if ((trf->framing == NFC_DIGITAL_FRAMING_NFC_DEP_ACTIVATED) &&
(trf->iso_ctrl_tech != trf->iso_ctrl)) {
ret = trf7970a_write(trf, TRF7970A_ISO_CTRL,
trf->iso_ctrl_tech);
trf->iso_ctrl = trf->iso_ctrl_tech;
}
return ret;
}
static int trf7970a_tg_send_cmd(struct nfc_digital_dev *ddev,
struct sk_buff *skb, u16 timeout,
/* Since this is a target routine, several of the framing calls are
* made between receiving the request and sending the response so they
* should take effect until after the response is sent. This is accomplished
* by skipping the ISO_CTRL register write here and doing it in the interrupt
* handler.
*/
static int trf7970a_tg_config_framing(struct trf7970a *trf, int framing)
{
u8 iso_ctrl = trf->iso_ctrl_tech;
int ret;
dev_dbg(trf->dev, "framing: %d\n", framing);
switch (framing) {
case NFC_DIGITAL_FRAMING_NFCA_NFC_DEP:
trf->tx_cmd = TRF7970A_CMD_TRANSMIT_NO_CRC;
iso_ctrl |= TRF7970A_ISO_CTRL_RX_CRC_N;
break;
case NFC_DIGITAL_FRAMING_NFCA_STANDARD:
case NFC_DIGITAL_FRAMING_NFCA_STANDARD_WITH_CRC_A:
case NFC_DIGITAL_FRAMING_NFCA_ANTICOL_COMPLETE:
/* These ones are applied in the interrupt handler */
iso_ctrl = trf->iso_ctrl; /* Don't write to ISO_CTRL yet */
break;
case NFC_DIGITAL_FRAMING_NFCF_NFC_DEP:
trf->tx_cmd = TRF7970A_CMD_TRANSMIT;
iso_ctrl &= ~TRF7970A_ISO_CTRL_RX_CRC_N;
break;
case NFC_DIGITAL_FRAMING_NFC_DEP_ACTIVATED:
trf->tx_cmd = TRF7970A_CMD_TRANSMIT;
iso_ctrl &= ~TRF7970A_ISO_CTRL_RX_CRC_N;
break;
default:
dev_dbg(trf->dev, "Unsupported Framing: %d\n", framing);
return -EINVAL;
}
trf->framing = framing;
if (iso_ctrl != trf->iso_ctrl) {
ret = trf7970a_write(trf, TRF7970A_ISO_CTRL, iso_ctrl);
if (ret)
return ret;
trf->iso_ctrl = iso_ctrl;
ret = trf7970a_write(trf, TRF7970A_MODULATOR_SYS_CLK_CTRL,
trf->modulator_sys_clk_ctrl);
if (ret)
return ret;
}
if (!(trf->chip_status_ctrl & TRF7970A_CHIP_STATUS_RF_ON)) {
ret = trf7970a_write(trf, TRF7970A_CHIP_STATUS_CTRL,
trf->chip_status_ctrl |
TRF7970A_CHIP_STATUS_RF_ON);
if (ret)
return ret;
trf->chip_status_ctrl |= TRF7970A_CHIP_STATUS_RF_ON;
}
return 0;
}
static int trf7970a_tg_configure_hw(struct nfc_digital_dev *ddev, int type,
int param)
{
struct trf7970a *trf = nfc_digital_get_drvdata(ddev);
int ret;
dev_dbg(trf->dev, "Configure hw - type: %d, param: %d\n", type, param);
mutex_lock(&trf->lock);
trf->is_initiator = false;
if ((trf->state == TRF7970A_ST_PWR_OFF) ||
(trf->state == TRF7970A_ST_RF_OFF)) {
ret = trf7970a_switch_rf_on(trf);
if (ret)
goto err_unlock;
}
switch (type) {
case NFC_DIGITAL_CONFIG_RF_TECH:
ret = trf7970a_tg_config_rf_tech(trf, param);
break;
case NFC_DIGITAL_CONFIG_FRAMING:
ret = trf7970a_tg_config_framing(trf, param);
break;
default:
dev_dbg(trf->dev, "Unknown type: %d\n", type);
ret = -EINVAL;
}
err_unlock:
mutex_unlock(&trf->lock);
return ret;
}
static int trf7970a_tg_listen(struct nfc_digital_dev *ddev, u16 timeout,
nfc_digital_cmd_complete_t cb, void *arg)
{
struct trf7970a *trf = nfc_digital_get_drvdata(ddev);
int ret;
dev_dbg(trf->dev, "Unsupported interface\n");
dev_dbg(trf->dev, "Listen - state: %d, timeout: %d ms\n",
trf->state, timeout);
return -EINVAL;
}
mutex_lock(&trf->lock);
static int trf7970a_tg_listen(struct nfc_digital_dev *ddev,
u16 timeout, nfc_digital_cmd_complete_t cb, void *arg)
{
struct trf7970a *trf = nfc_digital_get_drvdata(ddev);
if ((trf->state != TRF7970A_ST_IDLE) &&
(trf->state != TRF7970A_ST_IDLE_RX_BLOCKED)) {
dev_err(trf->dev, "%s - Bogus state: %d\n", __func__,
trf->state);
ret = -EIO;
goto out_err;
}
dev_dbg(trf->dev, "Unsupported interface\n");
if (trf->aborting) {
dev_dbg(trf->dev, "Abort process complete\n");
trf->aborting = false;
ret = -ECANCELED;
goto out_err;
}
return -EINVAL;
trf->rx_skb = nfc_alloc_recv_skb(TRF7970A_RX_SKB_ALLOC_SIZE,
GFP_KERNEL);
if (!trf->rx_skb) {
dev_dbg(trf->dev, "Can't alloc rx_skb\n");
ret = -ENOMEM;
goto out_err;
}
ret = trf7970a_write(trf, TRF7970A_RX_SPECIAL_SETTINGS,
TRF7970A_RX_SPECIAL_SETTINGS_HBT |
TRF7970A_RX_SPECIAL_SETTINGS_M848 |
TRF7970A_RX_SPECIAL_SETTINGS_C424 |
TRF7970A_RX_SPECIAL_SETTINGS_C212);
if (ret)
return ret;
ret = trf7970a_write(trf, TRF7970A_REG_IO_CTRL,
TRF7970A_REG_IO_CTRL_VRS(0x1));
if (ret)
return ret;
ret = trf7970a_write(trf, TRF7970A_NFC_LOW_FIELD_LEVEL,
TRF7970A_NFC_LOW_FIELD_LEVEL_RFDET(0x3));
if (ret)
return ret;
ret = trf7970a_write(trf, TRF7970A_NFC_TARGET_LEVEL,
TRF7970A_NFC_TARGET_LEVEL_RFDET(0x7));
if (ret)
return ret;
trf->ddev = ddev;
trf->cb = cb;
trf->cb_arg = arg;
trf->timeout = timeout;
trf->ignore_timeout = false;
ret = trf7970a_cmd(trf, TRF7970A_CMD_ENABLE_RX);
if (ret)
goto out_err;
trf->state = TRF7970A_ST_LISTENING;
schedule_delayed_work(&trf->timeout_work, msecs_to_jiffies(timeout));
out_err:
mutex_unlock(&trf->lock);
return ret;
}
static void trf7970a_abort_cmd(struct nfc_digital_dev *ddev)
@ -1381,6 +1678,11 @@ static void trf7970a_abort_cmd(struct nfc_digital_dev *ddev)
case TRF7970A_ST_WAIT_TO_ISSUE_EOF:
trf->aborting = true;
break;
case TRF7970A_ST_LISTENING:
trf->ignore_timeout = !cancel_delayed_work(&trf->timeout_work);
trf7970a_send_err_upstream(trf, -ECANCELED);
dev_dbg(trf->dev, "Abort process complete\n");
break;
default:
break;
}
@ -1390,9 +1692,9 @@ static void trf7970a_abort_cmd(struct nfc_digital_dev *ddev)
static struct nfc_digital_ops trf7970a_nfc_ops = {
.in_configure_hw = trf7970a_in_configure_hw,
.in_send_cmd = trf7970a_in_send_cmd,
.in_send_cmd = trf7970a_send_cmd,
.tg_configure_hw = trf7970a_tg_configure_hw,
.tg_send_cmd = trf7970a_tg_send_cmd,
.tg_send_cmd = trf7970a_send_cmd,
.tg_listen = trf7970a_tg_listen,
.switch_rf = trf7970a_switch_rf,
.abort_cmd = trf7970a_abort_cmd,
@ -1479,6 +1781,7 @@ static void trf7970a_shutdown(struct trf7970a *trf)
case TRF7970A_ST_WAIT_FOR_RX_DATA:
case TRF7970A_ST_WAIT_FOR_RX_DATA_CONT:
case TRF7970A_ST_WAIT_TO_ISSUE_EOF:
case TRF7970A_ST_LISTENING:
trf7970a_send_err_upstream(trf, -ECANCELED);
/* FALLTHROUGH */
case TRF7970A_ST_IDLE:
@ -1606,7 +1909,8 @@ static int trf7970a_probe(struct spi_device *spi)
trf->ddev = nfc_digital_allocate_device(&trf7970a_nfc_ops,
TRF7970A_SUPPORTED_PROTOCOLS,
NFC_DIGITAL_DRV_CAPS_IN_CRC, 0, 0);
NFC_DIGITAL_DRV_CAPS_IN_CRC |
NFC_DIGITAL_DRV_CAPS_TG_CRC, 0, 0);
if (!trf->ddev) {
dev_err(trf->dev, "Can't allocate NFC digital device\n");
ret = -ENOMEM;