diff options
Diffstat (limited to 'target/linux/imx6/patches-4.4/110-serial-imx-repair-and-complete-handshaking.patch')
| -rw-r--r-- | target/linux/imx6/patches-4.4/110-serial-imx-repair-and-complete-handshaking.patch | 74 |
1 files changed, 0 insertions, 74 deletions
diff --git a/target/linux/imx6/patches-4.4/110-serial-imx-repair-and-complete-handshaking.patch b/target/linux/imx6/patches-4.4/110-serial-imx-repair-and-complete-handshaking.patch deleted file mode 100644 index 82715b0cda..0000000000 --- a/target/linux/imx6/patches-4.4/110-serial-imx-repair-and-complete-handshaking.patch +++ /dev/null @@ -1,74 +0,0 @@ -From 90ebc4838666d148eac5bbac6f4044e5b25cd2d6 Mon Sep 17 00:00:00 2001 -From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= <u.kleine-koenig@pengutronix.de> -Date: Sun, 18 Oct 2015 21:34:46 +0200 -Subject: [PATCH] serial: imx: repair and complete handshaking -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -The .get_mctrl callback should not report the status of RTS or LOOP, so -drop this. Instead implement reporting the state of CAR (aka DCD) and -RI. - -For .set_mctrl implement setting the DTR line. - -Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> -Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -Signed-off-by: Petr Štetiar <ynezz@true.cz> ---- - drivers/tty/serial/imx.c | 23 +++++++++++++++++------ - 1 file changed, 17 insertions(+), 6 deletions(-) - ---- a/drivers/tty/serial/imx.c -+++ b/drivers/tty/serial/imx.c -@@ -148,8 +148,11 @@ - #define USR2_TXFE (1<<14) /* Transmit buffer FIFO empty */ - #define USR2_DTRF (1<<13) /* DTR edge interrupt flag */ - #define USR2_IDLE (1<<12) /* Idle condition */ -+#define USR2_RIDELT (1<<10) /* Ring Interrupt Delta */ -+#define USR2_RIIN (1<<9) /* Ring Indicator Input */ - #define USR2_IRINT (1<<8) /* Serial infrared interrupt flag */ - #define USR2_WAKE (1<<7) /* Wake */ -+#define USR2_DCDIN (1<<5) /* Data Carrier Detect Input */ - #define USR2_RTSF (1<<4) /* RTS edge interrupt flag */ - #define USR2_TXDC (1<<3) /* Transmitter complete */ - #define USR2_BRCD (1<<2) /* Break condition */ -@@ -804,16 +807,19 @@ static unsigned int imx_tx_empty(struct - static unsigned int imx_get_mctrl(struct uart_port *port) - { - struct imx_port *sport = (struct imx_port *)port; -- unsigned int tmp = TIOCM_DSR | TIOCM_CAR; -+ unsigned int tmp = TIOCM_DSR; -+ unsigned usr1 = readl(sport->port.membase + USR1); - -- if (readl(sport->port.membase + USR1) & USR1_RTSS) -+ if (usr1 & USR1_RTSS) - tmp |= TIOCM_CTS; - -- if (readl(sport->port.membase + UCR2) & UCR2_CTS) -- tmp |= TIOCM_RTS; -- -- if (readl(sport->port.membase + uts_reg(sport)) & UTS_LOOP) -- tmp |= TIOCM_LOOP; -+ /* in DCE mode DCDIN is always 0 */ -+ if (!(usr1 & USR2_DCDIN)) -+ tmp |= TIOCM_CAR; -+ -+ /* in DCE mode RIIN is always 0 */ -+ if (readl(sport->port.membase + USR2) & USR2_RIIN) -+ tmp |= TIOCM_RI; - - return tmp; - } -@@ -831,6 +837,11 @@ static void imx_set_mctrl(struct uart_po - writel(temp, sport->port.membase + UCR2); - } - -+ temp = readl(sport->port.membase + UCR3) & ~UCR3_DSR; -+ if (!(mctrl & TIOCM_DTR)) -+ temp |= UCR3_DSR; -+ writel(temp, sport->port.membase + UCR3); -+ - temp = readl(sport->port.membase + uts_reg(sport)) & ~UTS_LOOP; - if (mctrl & TIOCM_LOOP) - temp |= UTS_LOOP; |