These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

1 files changed, 29 insertions, 6 deletions

diff --git a/kernel/drivers/nfc/trf7970a.c b/kernel/drivers/nfc/trf7970a.c
index aa6a333b2..f857feb2b 100644
--- a/kernel/drivers/nfc/trf7970a.c
+++ b/kernel/drivers/nfc/trf7970a.c
@@ -149,6 +149,7 @@
  */
 #define TRF7970A_QUIRK_IRQ_STATUS_READ		BIT(0)
 #define TRF7970A_QUIRK_EN2_MUST_STAY_LOW	BIT(1)
+#define TRF7970A_QUIRK_T5T_RMB_EXTRA_BYTE	BIT(2)
 
 /* Direct commands */
 #define TRF7970A_CMD_IDLE			0x00
@@ -335,7 +336,7 @@
 
 #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_SDD_EN	BIT(5)
 #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)
@@ -446,6 +447,7 @@ struct trf7970a {
 	u8				md_rf_tech;
 	u8				tx_cmd;
 	bool				issue_eof;
+	bool				adjust_resp_len;
 	int				en2_gpio;
 	int				en_gpio;
 	struct mutex			lock;
@@ -626,6 +628,13 @@ static void trf7970a_send_upstream(struct trf7970a *trf)
 		trf->aborting = false;
 	}
 
+	if (trf->adjust_resp_len) {
+		if (trf->rx_skb)
+			skb_trim(trf->rx_skb, trf->rx_skb->len - 1);
+
+		trf->adjust_resp_len = false;
+	}
+
 	trf->cb(trf->ddev, trf->cb_arg, trf->rx_skb);
 
 	trf->rx_skb = NULL;
@@ -1429,10 +1438,15 @@ static int trf7970a_per_cmd_config(struct trf7970a *trf, struct sk_buff *skb)
 			trf->iso_ctrl = iso_ctrl;
 		}
 
-		if ((trf->framing == NFC_DIGITAL_FRAMING_ISO15693_T5T) &&
-				trf7970a_is_iso15693_write_or_lock(req[1]) &&
-				(req[0] & ISO15693_REQ_FLAG_OPTION))
-			trf->issue_eof = true;
+		if (trf->framing == NFC_DIGITAL_FRAMING_ISO15693_T5T) {
+			if (trf7970a_is_iso15693_write_or_lock(req[1]) &&
+					(req[0] & ISO15693_REQ_FLAG_OPTION))
+				trf->issue_eof = true;
+			else if ((trf->quirks &
+					TRF7970A_QUIRK_T5T_RMB_EXTRA_BYTE) &&
+				 (req[1] == ISO15693_CMD_READ_MULTIPLE_BLOCK))
+				trf->adjust_resp_len = true;
+		}
 	}
 
 	return 0;
@@ -1992,6 +2006,9 @@ static int trf7970a_probe(struct spi_device *spi)
 		return ret;
 	}
 
+	if (of_property_read_bool(np, "t5t-rmb-extra-byte-quirk"))
+		trf->quirks |= TRF7970A_QUIRK_T5T_RMB_EXTRA_BYTE;
+
 	if (of_property_read_bool(np, "irq-status-read-quirk"))
 		trf->quirks |= TRF7970A_QUIRK_IRQ_STATUS_READ;
 
@@ -2194,6 +2211,12 @@ static const struct dev_pm_ops trf7970a_pm_ops = {
 			trf7970a_pm_runtime_resume, NULL)
 };
 
+static const struct of_device_id trf7970a_of_match[] = {
+	{ .compatible = "ti,trf7970a", },
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, trf7970a_of_match);
+
 static const struct spi_device_id trf7970a_id_table[] = {
 	{ "trf7970a", 0 },
 	{ }
@@ -2206,7 +2229,7 @@ static struct spi_driver trf7970a_spi_driver = {
 	.id_table	= trf7970a_id_table,
 	.driver		= {
 		.name	= "trf7970a",
-		.owner	= THIS_MODULE,
+		.of_match_table = of_match_ptr(trf7970a_of_match),
 		.pm	= &trf7970a_pm_ops,
 	},
 };