summaryrefslogtreecommitdiff
path: root/include/linux/serial_s3c.h
diff options
context:
space:
mode:
authorNick Chan <towinchenmi@gmail.com>2024-09-11 08:02:13 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2024-09-11 16:47:13 +0300
commit5ed771f174726ae879945d4f148a9005ac909cb7 (patch)
tree2ca69d011a23fed36b61de24d7f24909bfc73dfc /include/linux/serial_s3c.h
parent86d4ac2c0c31649f73bcbb424f9e1fb68c07cd60 (diff)
downloadlinux-5ed771f174726ae879945d4f148a9005ac909cb7.tar.xz
tty: serial: samsung: Fix serial rx on Apple A7-A9
Apple's older A7-A9 SoCs seems to use bit 3 in UTRSTAT as RXTO, which is enabled by bit 11 in UCON. Access these bits in addition to the original RXTO and RXTO enable bits, to allow serial rx to function on A7-A9 SoCs. This change does not appear to affect the A10 SoC and up. Tested-by: Janne Grunau <j@jannau.net> Reviewed-by: Neal Gompa <neal@gompa.dev> Signed-off-by: Nick Chan <towinchenmi@gmail.com> Reviewed-by: Andi Shyti <andi.shyti@kernel.org> Link: https://lore.kernel.org/r/20240911050741.14477-4-towinchenmi@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/serial_s3c.h')
-rw-r--r--include/linux/serial_s3c.h18
1 files changed, 11 insertions, 7 deletions
diff --git a/include/linux/serial_s3c.h b/include/linux/serial_s3c.h
index 2a934e20ca4b..102aa33d956c 100644
--- a/include/linux/serial_s3c.h
+++ b/include/linux/serial_s3c.h
@@ -246,24 +246,28 @@
S5PV210_UFCON_TXTRIG4 | \
S5PV210_UFCON_RXTRIG4)
-#define APPLE_S5L_UCON_RXTO_ENA 9
-#define APPLE_S5L_UCON_RXTHRESH_ENA 12
-#define APPLE_S5L_UCON_TXTHRESH_ENA 13
-#define APPLE_S5L_UCON_RXTO_ENA_MSK BIT(APPLE_S5L_UCON_RXTO_ENA)
-#define APPLE_S5L_UCON_RXTHRESH_ENA_MSK BIT(APPLE_S5L_UCON_RXTHRESH_ENA)
-#define APPLE_S5L_UCON_TXTHRESH_ENA_MSK BIT(APPLE_S5L_UCON_TXTHRESH_ENA)
+#define APPLE_S5L_UCON_RXTO_ENA 9
+#define APPLE_S5L_UCON_RXTO_LEGACY_ENA 11
+#define APPLE_S5L_UCON_RXTHRESH_ENA 12
+#define APPLE_S5L_UCON_TXTHRESH_ENA 13
+#define APPLE_S5L_UCON_RXTO_ENA_MSK BIT(APPLE_S5L_UCON_RXTO_ENA)
+#define APPLE_S5L_UCON_RXTO_LEGACY_ENA_MSK BIT(APPLE_S5L_UCON_RXTO_LEGACY_ENA)
+#define APPLE_S5L_UCON_RXTHRESH_ENA_MSK BIT(APPLE_S5L_UCON_RXTHRESH_ENA)
+#define APPLE_S5L_UCON_TXTHRESH_ENA_MSK BIT(APPLE_S5L_UCON_TXTHRESH_ENA)
#define APPLE_S5L_UCON_DEFAULT (S3C2410_UCON_TXIRQMODE | \
S3C2410_UCON_RXIRQMODE | \
S3C2410_UCON_RXFIFO_TOI)
#define APPLE_S5L_UCON_MASK (APPLE_S5L_UCON_RXTO_ENA_MSK | \
+ APPLE_S5L_UCON_RXTO_LEGACY_ENA_MSK | \
APPLE_S5L_UCON_RXTHRESH_ENA_MSK | \
APPLE_S5L_UCON_TXTHRESH_ENA_MSK)
+#define APPLE_S5L_UTRSTAT_RXTO_LEGACY BIT(3)
#define APPLE_S5L_UTRSTAT_RXTHRESH BIT(4)
#define APPLE_S5L_UTRSTAT_TXTHRESH BIT(5)
#define APPLE_S5L_UTRSTAT_RXTO BIT(9)
-#define APPLE_S5L_UTRSTAT_ALL_FLAGS GENMASK(9, 4)
+#define APPLE_S5L_UTRSTAT_ALL_FLAGS GENMASK(9, 3)
#ifndef __ASSEMBLY__