diff options
| author | Mitul Golani <mgolani@codeaurora.org> | 2019-04-29 18:25:00 +0530 |
|---|---|---|
| committer | Gerrit - the friendly Code Review server <code-review@localhost> | 2019-05-20 02:51:25 -0700 |
| commit | 095ed32dd71f95c4e6ed67b197ed82acb9f82c71 (patch) | |
| tree | 4d426aee3bef55073c91fa66b942c8c93bfb5b4c | |
| parent | 4efd54ad69f12f04a2dea6c5650e11b7421bc4e0 (diff) | |
serial: msm_serial_hs: Align to HW assisted flow control support
If client enables HW AUTOCTS mode then set UPSTAT_AUTOCTS,otherwise
serial core disables TX fully at the framework layer and
no communication happens.
Signed-off-by: Mitul Golani <mgolani@codeaurora.org>
Change-Id: I13d6048fc2aeacd2f0078fc38f43e07cfd5a5850
| -rw-r--r-- | drivers/tty/serial/msm_serial_hs.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/tty/serial/msm_serial_hs.c b/drivers/tty/serial/msm_serial_hs.c index 064494366f01..9a9ea7c62db1 100644 --- a/drivers/tty/serial/msm_serial_hs.c +++ b/drivers/tty/serial/msm_serial_hs.c @@ -3,7 +3,7 @@ * MSM 7k High speed uart driver * * Copyright (c) 2008 Google Inc. - * Copyright (c) 2007-2018, The Linux Foundation. All rights reserved. + * Copyright (c) 2007-2019, The Linux Foundation. All rights reserved. * Modified: Nick Pelly <npelly@google.com> * * All source code in this file is licensed under the following license @@ -1185,6 +1185,7 @@ static void msm_hs_set_termios(struct uart_port *uport, data |= EIGHT_BPC; break; } + uport->status &= ~(UPSTAT_AUTOCTS); /* stop bits */ if (c_cflag & CSTOPB) { data |= STOP_BIT_TWO; @@ -1229,6 +1230,7 @@ static void msm_hs_set_termios(struct uart_port *uport, if (c_cflag & CRTSCTS) { data |= UARTDM_MR1_CTS_CTL_BMSK; data |= UARTDM_MR1_RX_RDY_CTL_BMSK; + uport->status |= UPSTAT_AUTOCTS; msm_uport->flow_control = true; } msm_hs_write(uport, UART_DM_MR1, data); |