diff options
Diffstat (limited to 'drivers/nfc')
| -rw-r--r-- | drivers/nfc/trf7970a.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/drivers/nfc/trf7970a.c b/drivers/nfc/trf7970a.c index 8744a556fbd1..a91859b133e8 100644 --- a/drivers/nfc/trf7970a.c +++ b/drivers/nfc/trf7970a.c @@ -1221,12 +1221,25 @@ static struct nfc_digital_ops trf7970a_nfc_ops = { .abort_cmd = trf7970a_abort_cmd, }; +static int trf7970a_get_autosuspend_delay(struct device_node *np) +{ + int autosuspend_delay, ret; + + ret = of_property_read_u32(np, "autosuspend-delay", &autosuspend_delay); + if (ret) + autosuspend_delay = TRF7970A_AUTOSUSPEND_DELAY; + + of_node_put(np); + + return autosuspend_delay; +} + static int trf7970a_probe(struct spi_device *spi) { struct device_node *np = spi->dev.of_node; const struct spi_device_id *id = spi_get_device_id(spi); struct trf7970a *trf; - int uvolts, ret; + int uvolts, autosuspend_delay, ret; if (!np) { dev_err(&spi->dev, "No Device Tree entry\n"); @@ -1315,7 +1328,9 @@ static int trf7970a_probe(struct spi_device *spi) nfc_digital_set_drvdata(trf->ddev, trf); spi_set_drvdata(spi, trf); - pm_runtime_set_autosuspend_delay(trf->dev, TRF7970A_AUTOSUSPEND_DELAY); + autosuspend_delay = trf7970a_get_autosuspend_delay(np); + + pm_runtime_set_autosuspend_delay(trf->dev, autosuspend_delay); pm_runtime_use_autosuspend(trf->dev); pm_runtime_enable(trf->dev); |