* [PATCH] Add poll_get_char & poll_put_char to uart_ops for the samsung UARTS.
@ 2012-02-12 18:22 Julien Pichon
[not found] ` <CAHQa92X=9kiVhxCspcAR+dK-NbFqaUW2xTCjjDOAHGfDx_yMBQ@mail.gmail.com>
` (2 more replies)
0 siblings, 3 replies; 8+ messages in thread
From: Julien Pichon @ 2012-02-12 18:22 UTC (permalink / raw)
To: linux-samsung-soc
(please CC me in your replies as I am not suscribed to the ML)
The following patch allows users to use KGDB over serial console on
board based on Samsung SOC. It has been tested on a mini2440.
Signed-off-by: Julien Pichon <pichon.jln@gmail.com>
---
drivers/tty/serial/samsung.c | 50 ++++++++++++++++++++++++++++++++++++++++++
1 files changed, 50 insertions(+), 0 deletions(-)
diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c
index f96f37b..9f703ca 100644
--- a/drivers/tty/serial/samsung.c
+++ b/drivers/tty/serial/samsung.c
@@ -877,11 +877,24 @@ s3c24xx_serial_verify_port(struct uart_port *port, struct serial_struct *ser)
static struct console s3c24xx_serial_console;
+static int __init s3c24xx_serial_console_init(void)
+{
+ register_console(&s3c24xx_serial_console);
+ return 0;
+}
+console_initcall(s3c24xx_serial_console_init);
+
#define S3C24XX_SERIAL_CONSOLE &s3c24xx_serial_console
#else
#define S3C24XX_SERIAL_CONSOLE NULL
#endif
+#ifdef CONFIG_CONSOLE_POLL
+static int s3c24xx_serial_get_poll_char(struct uart_port *port);
+static void s3c24xx_serial_put_poll_char(struct uart_port *port,
+ unsigned char c);
+#endif
+
static struct uart_ops s3c24xx_serial_ops = {
.pm = s3c24xx_serial_pm,
.tx_empty = s3c24xx_serial_tx_empty,
@@ -900,6 +913,10 @@ static struct uart_ops s3c24xx_serial_ops = {
.request_port = s3c24xx_serial_request_port,
.config_port = s3c24xx_serial_config_port,
.verify_port = s3c24xx_serial_verify_port,
+#ifdef CONFIG_CONSOLE_POLL
+ .poll_get_char = s3c24xx_serial_get_poll_char,
+ .poll_put_char = s3c24xx_serial_put_poll_char,
+#endif
};
static struct uart_driver s3c24xx_uart_drv = {
@@ -1311,6 +1328,39 @@ s3c24xx_serial_console_txrdy(struct uart_port *port, unsigned int ufcon)
return (utrstat & S3C2410_UTRSTAT_TXE) ? 1 : 0;
}
+#ifdef CONFIG_CONSOLE_POLL
+/*
+ * Console polling routines for writing and reading from the uart while
+ * in an interrupt or debug context.
+ */
+
+static int s3c24xx_serial_get_poll_char(struct uart_port *port)
+{
+ struct s3c24xx_uart_port *ourport = to_ourport(port);
+ unsigned int ufstat, count;
+
+ do {
+ ufstat = rd_regl(port, S3C2410_UFSTAT);
+ count = s3c24xx_serial_rx_fifocnt(ourport, ufstat);
+ if (!count)
+ cpu_relax();
+ } while (!count);
+
+ return rd_regb(port, S3C2410_URXH);
+}
+
+static void s3c24xx_serial_put_poll_char(struct uart_port *port,
+ unsigned char c)
+{
+ unsigned int ufcon = rd_regl(cons_uart, S3C2410_UFCON);
+
+ while (!s3c24xx_serial_console_txrdy(port, ufcon))
+ cpu_relax();
+ wr_regb(cons_uart, S3C2410_UTXH, c);
+}
+
+#endif /* CONFIG_CONSOLE_POLL */
+
static void
s3c24xx_serial_console_putchar(struct uart_port *port, int ch)
{
--
1.7.2.5
^ permalink raw reply related [flat|nested] 8+ messages in thread[parent not found: <CAHQa92X=9kiVhxCspcAR+dK-NbFqaUW2xTCjjDOAHGfDx_yMBQ@mail.gmail.com>]
* Re: [PATCH] Add poll_get_char & poll_put_char to uart_ops for the samsung UARTS.
[not found] ` <CAHQa92X=9kiVhxCspcAR+dK-NbFqaUW2xTCjjDOAHGfDx_yMBQ@mail.gmail.com>
@ 2012-02-25 11:05 ` Pichon Julien
2012-02-25 11:27 ` Heiko Stübner
0 siblings, 1 reply; 8+ messages in thread
From: Pichon Julien @ 2012-02-25 11:05 UTC (permalink / raw)
To: linux-samsung-soc; +Cc: ben-linux, kgene.kim
> (please CC me in your replies as I am not suscribed to the ML)
>
> The following patch allows users to use KGDB over serial console on
> board based on Samsung SOC. It has been tested on a mini2440.
>
> Signed-off-by: Julien Pichon <pichon.jln@gmail.com>
> ---
> drivers/tty/serial/samsung.c | 50 ++++++++++++++++++++++++++++++++++++++++++
> 1 files changed, 50 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c
> index f96f37b..9f703ca 100644
> --- a/drivers/tty/serial/samsung.c
> +++ b/drivers/tty/serial/samsung.c
> @@ -877,11 +877,24 @@ s3c24xx_serial_verify_port(struct uart_port *port, struct serial_struct *ser)
>
> static struct console s3c24xx_serial_console;
>
> +static int __init s3c24xx_serial_console_init(void)
> +{
> + register_console(&s3c24xx_serial_console);
> + return 0;
> +}
> +console_initcall(s3c24xx_serial_console_init);
> +
> #define S3C24XX_SERIAL_CONSOLE &s3c24xx_serial_console
> #else
> #define S3C24XX_SERIAL_CONSOLE NULL
> #endif
>
> +#ifdef CONFIG_CONSOLE_POLL
> +static int s3c24xx_serial_get_poll_char(struct uart_port *port);
> +static void s3c24xx_serial_put_poll_char(struct uart_port *port,
> + unsigned char c);
> +#endif
> +
> static struct uart_ops s3c24xx_serial_ops = {
> .pm = s3c24xx_serial_pm,
> .tx_empty = s3c24xx_serial_tx_empty,
> @@ -900,6 +913,10 @@ static struct uart_ops s3c24xx_serial_ops = {
> .request_port = s3c24xx_serial_request_port,
> .config_port = s3c24xx_serial_config_port,
> .verify_port = s3c24xx_serial_verify_port,
> +#ifdef CONFIG_CONSOLE_POLL
> + .poll_get_char = s3c24xx_serial_get_poll_char,
> + .poll_put_char = s3c24xx_serial_put_poll_char,
> +#endif
> };
>
> static struct uart_driver s3c24xx_uart_drv = {
> @@ -1311,6 +1328,39 @@ s3c24xx_serial_console_txrdy(struct uart_port *port, unsigned int ufcon)
> return (utrstat & S3C2410_UTRSTAT_TXE) ? 1 : 0;
> }
>
> +#ifdef CONFIG_CONSOLE_POLL
> +/*
> + * Console polling routines for writing and reading from the uart while
> + * in an interrupt or debug context.
> + */
> +
> +static int s3c24xx_serial_get_poll_char(struct uart_port *port)
> +{
> + struct s3c24xx_uart_port *ourport = to_ourport(port);
> + unsigned int ufstat, count;
> +
> + do {
> + ufstat = rd_regl(port, S3C2410_UFSTAT);
> + count = s3c24xx_serial_rx_fifocnt(ourport, ufstat);
> + if (!count)
> + cpu_relax();
> + } while (!count);
> +
> + return rd_regb(port, S3C2410_URXH);
> +}
> +
> +static void s3c24xx_serial_put_poll_char(struct uart_port *port,
> + unsigned char c)
> +{
> + unsigned int ufcon = rd_regl(cons_uart, S3C2410_UFCON);
> +
> + while (!s3c24xx_serial_console_txrdy(port, ufcon))
> + cpu_relax();
> + wr_regb(cons_uart, S3C2410_UTXH, c);
> +}
> +
> +#endif /* CONFIG_CONSOLE_POLL */
> +
> static void
> s3c24xx_serial_console_putchar(struct uart_port *port, int ch)
> {
> --
> 1.7.2.5
>
>
(CC maintainers)
Someone has time to review this patch ?
^ permalink raw reply [flat|nested] 8+ messages in thread* Re: [PATCH] Add poll_get_char & poll_put_char to uart_ops for the samsung UARTS.
2012-02-25 11:05 ` Pichon Julien
@ 2012-02-25 11:27 ` Heiko Stübner
0 siblings, 0 replies; 8+ messages in thread
From: Heiko Stübner @ 2012-02-25 11:27 UTC (permalink / raw)
To: Pichon Julien; +Cc: kgene.kim, linux-samsung-soc, linux-arm-kernel, ben-linux
Am Samstag 25 Februar 2012, 12:05:56 schrieb Pichon Julien:
> > (please CC me in your replies as I am not suscribed to the ML)
> >
> > The following patch allows users to use KGDB over serial console on
> > board based on Samsung SOC. It has been tested on a mini2440.
> >
> > Signed-off-by: Julien Pichon <pichon.jln@gmail.com>
> > ---
> > drivers/tty/serial/samsung.c | 50
> > ++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 50
> > insertions(+), 0 deletions(-)
> >
> > diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c
> > index f96f37b..9f703ca 100644
> > --- a/drivers/tty/serial/samsung.c
> > +++ b/drivers/tty/serial/samsung.c
> > @@ -877,11 +877,24 @@ s3c24xx_serial_verify_port(struct uart_port *port,
> > struct serial_struct *ser)
> >
> > static struct console s3c24xx_serial_console;
> >
> > +static int __init s3c24xx_serial_console_init(void)
> > +{
> > + register_console(&s3c24xx_serial_console);
> > + return 0;
> > +}
> > +console_initcall(s3c24xx_serial_console_init);
> > +
> > #define S3C24XX_SERIAL_CONSOLE &s3c24xx_serial_console
> > #else
> > #define S3C24XX_SERIAL_CONSOLE NULL
> > #endif
> >
> > +#ifdef CONFIG_CONSOLE_POLL
> > +static int s3c24xx_serial_get_poll_char(struct uart_port *port);
> > +static void s3c24xx_serial_put_poll_char(struct uart_port *port,
> > + unsigned char c);
> > +#endif
> > +
> > static struct uart_ops s3c24xx_serial_ops = {
> > .pm = s3c24xx_serial_pm,
> > .tx_empty = s3c24xx_serial_tx_empty,
> > @@ -900,6 +913,10 @@ static struct uart_ops s3c24xx_serial_ops = {
> > .request_port = s3c24xx_serial_request_port,
> > .config_port = s3c24xx_serial_config_port,
> > .verify_port = s3c24xx_serial_verify_port,
> > +#ifdef CONFIG_CONSOLE_POLL
> > + .poll_get_char = s3c24xx_serial_get_poll_char,
> > + .poll_put_char = s3c24xx_serial_put_poll_char,
> > +#endif
> > };
> >
> > static struct uart_driver s3c24xx_uart_drv = {
> > @@ -1311,6 +1328,39 @@ s3c24xx_serial_console_txrdy(struct uart_port
> > *port, unsigned int ufcon) return (utrstat & S3C2410_UTRSTAT_TXE) ? 1 :
> > 0;
> > }
> >
> > +#ifdef CONFIG_CONSOLE_POLL
> > +/*
> > + * Console polling routines for writing and reading from the uart while
> > + * in an interrupt or debug context.
> > + */
> > +
> > +static int s3c24xx_serial_get_poll_char(struct uart_port *port)
> > +{
> > + struct s3c24xx_uart_port *ourport = to_ourport(port);
> > + unsigned int ufstat, count;
> > +
> > + do {
> > + ufstat = rd_regl(port, S3C2410_UFSTAT);
> > + count = s3c24xx_serial_rx_fifocnt(ourport, ufstat);
> > + if (!count)
> > + cpu_relax();
> > + } while (!count);
> > +
> > + return rd_regb(port, S3C2410_URXH);
> > +}
> > +
> > +static void s3c24xx_serial_put_poll_char(struct uart_port *port,
> > + unsigned char c)
> > +{
> > + unsigned int ufcon = rd_regl(cons_uart, S3C2410_UFCON);
> > +
> > + while (!s3c24xx_serial_console_txrdy(port, ufcon))
> > + cpu_relax();
> > + wr_regb(cons_uart, S3C2410_UTXH, c);
> > +}
> > +
> > +#endif /* CONFIG_CONSOLE_POLL */
> > +
> > static void
> > s3c24xx_serial_console_putchar(struct uart_port *port, int ch)
> > {
> > --
> > 1.7.2.5
>
> (CC maintainers)
> Someone has time to review this patch ?
It might be goot to included the linux-arm-kernel list to get a wider
audience. I always felt, that the samsung ml isn't read by many.
Heiko
^ permalink raw reply [flat|nested] 8+ messages in thread* [PATCH] Add poll_get_char & poll_put_char to uart_ops for the samsung UARTS.
@ 2012-02-25 11:27 ` Heiko Stübner
0 siblings, 0 replies; 8+ messages in thread
From: Heiko Stübner @ 2012-02-25 11:27 UTC (permalink / raw)
To: linux-arm-kernel
Am Samstag 25 Februar 2012, 12:05:56 schrieb Pichon Julien:
> > (please CC me in your replies as I am not suscribed to the ML)
> >
> > The following patch allows users to use KGDB over serial console on
> > board based on Samsung SOC. It has been tested on a mini2440.
> >
> > Signed-off-by: Julien Pichon <pichon.jln@gmail.com>
> > ---
> > drivers/tty/serial/samsung.c | 50
> > ++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 50
> > insertions(+), 0 deletions(-)
> >
> > diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c
> > index f96f37b..9f703ca 100644
> > --- a/drivers/tty/serial/samsung.c
> > +++ b/drivers/tty/serial/samsung.c
> > @@ -877,11 +877,24 @@ s3c24xx_serial_verify_port(struct uart_port *port,
> > struct serial_struct *ser)
> >
> > static struct console s3c24xx_serial_console;
> >
> > +static int __init s3c24xx_serial_console_init(void)
> > +{
> > + register_console(&s3c24xx_serial_console);
> > + return 0;
> > +}
> > +console_initcall(s3c24xx_serial_console_init);
> > +
> > #define S3C24XX_SERIAL_CONSOLE &s3c24xx_serial_console
> > #else
> > #define S3C24XX_SERIAL_CONSOLE NULL
> > #endif
> >
> > +#ifdef CONFIG_CONSOLE_POLL
> > +static int s3c24xx_serial_get_poll_char(struct uart_port *port);
> > +static void s3c24xx_serial_put_poll_char(struct uart_port *port,
> > + unsigned char c);
> > +#endif
> > +
> > static struct uart_ops s3c24xx_serial_ops = {
> > .pm = s3c24xx_serial_pm,
> > .tx_empty = s3c24xx_serial_tx_empty,
> > @@ -900,6 +913,10 @@ static struct uart_ops s3c24xx_serial_ops = {
> > .request_port = s3c24xx_serial_request_port,
> > .config_port = s3c24xx_serial_config_port,
> > .verify_port = s3c24xx_serial_verify_port,
> > +#ifdef CONFIG_CONSOLE_POLL
> > + .poll_get_char = s3c24xx_serial_get_poll_char,
> > + .poll_put_char = s3c24xx_serial_put_poll_char,
> > +#endif
> > };
> >
> > static struct uart_driver s3c24xx_uart_drv = {
> > @@ -1311,6 +1328,39 @@ s3c24xx_serial_console_txrdy(struct uart_port
> > *port, unsigned int ufcon) return (utrstat & S3C2410_UTRSTAT_TXE) ? 1 :
> > 0;
> > }
> >
> > +#ifdef CONFIG_CONSOLE_POLL
> > +/*
> > + * Console polling routines for writing and reading from the uart while
> > + * in an interrupt or debug context.
> > + */
> > +
> > +static int s3c24xx_serial_get_poll_char(struct uart_port *port)
> > +{
> > + struct s3c24xx_uart_port *ourport = to_ourport(port);
> > + unsigned int ufstat, count;
> > +
> > + do {
> > + ufstat = rd_regl(port, S3C2410_UFSTAT);
> > + count = s3c24xx_serial_rx_fifocnt(ourport, ufstat);
> > + if (!count)
> > + cpu_relax();
> > + } while (!count);
> > +
> > + return rd_regb(port, S3C2410_URXH);
> > +}
> > +
> > +static void s3c24xx_serial_put_poll_char(struct uart_port *port,
> > + unsigned char c)
> > +{
> > + unsigned int ufcon = rd_regl(cons_uart, S3C2410_UFCON);
> > +
> > + while (!s3c24xx_serial_console_txrdy(port, ufcon))
> > + cpu_relax();
> > + wr_regb(cons_uart, S3C2410_UTXH, c);
> > +}
> > +
> > +#endif /* CONFIG_CONSOLE_POLL */
> > +
> > static void
> > s3c24xx_serial_console_putchar(struct uart_port *port, int ch)
> > {
> > --
> > 1.7.2.5
>
> (CC maintainers)
> Someone has time to review this patch ?
It might be goot to included the linux-arm-kernel list to get a wider
audience. I always felt, that the samsung ml isn't read by many.
Heiko
^ permalink raw reply [flat|nested] 8+ messages in thread* Re: [PATCH] Add poll_get_char & poll_put_char to uart_ops for the samsung UARTS.
2012-02-25 11:27 ` Heiko Stübner
@ 2012-02-26 18:34 ` Denis 'GNUtoo' Carikli
-1 siblings, 0 replies; 8+ messages in thread
From: Denis 'GNUtoo' Carikli @ 2012-02-26 18:34 UTC (permalink / raw)
To: Heiko Stübner
Cc: Pichon Julien, linux-samsung-soc, ben-linux, kgene.kim,
linux-arm-kernel
>It might be goot to included the linux-arm-kernel list to get a wider
>audience. I always felt, that the samsung ml isn't read by many.
Why not the linux-serial mailing list?
I sent a patch there and it was accepted in Greg Kroah-Hartman's tree really
fast(it didn't hit linux-next yet tough).
Denis.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [PATCH] Add poll_get_char & poll_put_char to uart_ops for the samsung UARTS.
@ 2012-02-26 18:34 ` Denis 'GNUtoo' Carikli
0 siblings, 0 replies; 8+ messages in thread
From: Denis 'GNUtoo' Carikli @ 2012-02-26 18:34 UTC (permalink / raw)
To: linux-arm-kernel
>It might be goot to included the linux-arm-kernel list to get a wider
>audience. I always felt, that the samsung ml isn't read by many.
Why not the linux-serial mailing list?
I sent a patch there and it was accepted in Greg Kroah-Hartman's tree really
fast(it didn't hit linux-next yet tough).
Denis.
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH] Add poll_get_char & poll_put_char to uart_ops for the samsung UARTS.
2012-02-12 18:22 [PATCH] Add poll_get_char & poll_put_char to uart_ops for the samsung UARTS Julien Pichon
[not found] ` <CAHQa92X=9kiVhxCspcAR+dK-NbFqaUW2xTCjjDOAHGfDx_yMBQ@mail.gmail.com>
@ 2012-02-26 18:31 ` Denis 'GNUtoo' Carikli
2012-09-22 6:22 ` [PATCH] serial: samsung: Add poll_get_char & poll_put_char Doug Anderson
2 siblings, 0 replies; 8+ messages in thread
From: Denis 'GNUtoo' Carikli @ 2012-02-26 18:31 UTC (permalink / raw)
To: Julien Pichon; +Cc: linux-samsung-soc
Hi Julien,
>The following patch allows users to use KGDB over serial console on
>board based on Samsung SOC. It has been tested on a mini2440.
(gdb) target remote /dev/ttyUSB0
Remote debugging using /dev/ttyUSB0
kgdb_breakpoint () at kernel/debug/debug_core.c:959
959 arch_kgdb_breakpoint();
It works on a gta02 machine too...
Thanks a lot for working on that, it will help me a lot for continuing to fix
things in mainline for gta02, It already was very usefull with debugging an
alsa problem.
Tested-by: Denis 'GNUtoo' Carikli <GNUtoo@no-log.org>
Denis.
^ permalink raw reply [flat|nested] 8+ messages in thread* [PATCH] serial: samsung: Add poll_get_char & poll_put_char
2012-02-12 18:22 [PATCH] Add poll_get_char & poll_put_char to uart_ops for the samsung UARTS Julien Pichon
[not found] ` <CAHQa92X=9kiVhxCspcAR+dK-NbFqaUW2xTCjjDOAHGfDx_yMBQ@mail.gmail.com>
2012-02-26 18:31 ` Denis 'GNUtoo' Carikli
@ 2012-09-22 6:22 ` Doug Anderson
2 siblings, 0 replies; 8+ messages in thread
From: Doug Anderson @ 2012-09-22 6:22 UTC (permalink / raw)
To: linux-samsung-soc
Cc: linux-serial, linux-kernel, Julien Pichon, Alan Cox,
Greg Kroah-Hartman, kgene.kim, GNUtoo, heiko, ben-linux,
Doug Anderson
From: Julien Pichon <pichon.jln@gmail.com>
The following patch allows users to use KGDB over serial console on
board based on Samsung SOC. It has been tested on a board using
exynos5.
Signed-off-by: Julien Pichon <pichon.jln@gmail.com>
Signed-off-by: Doug Anderson <dianders@chromium.org>
(dianders changed poll to return NO_POLL_CHAR, which appears to
fix 'help' in kgdb; also updated commit message)
---
This is pulled from an email on <linux-samsung-soc@vger.kernel.org>
from Feb 18, 2012. It's never landed anywhere. I've made a small modification
that make it so that kgdb's "help" doesn't crash.
See: http://comments.gmane.org/gmane.linux.kernel.samsung-soc/9477
drivers/tty/serial/samsung.c | 47 ++++++++++++++++++++++++++++++++++++++++++
1 files changed, 47 insertions(+), 0 deletions(-)
diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c
index 8eef114..7f04717 100644
--- a/drivers/tty/serial/samsung.c
+++ b/drivers/tty/serial/samsung.c
@@ -876,11 +876,24 @@ s3c24xx_serial_verify_port(struct uart_port *port, struct serial_struct *ser)
static struct console s3c24xx_serial_console;
+static int __init s3c24xx_serial_console_init(void)
+{
+ register_console(&s3c24xx_serial_console);
+ return 0;
+}
+console_initcall(s3c24xx_serial_console_init);
+
#define S3C24XX_SERIAL_CONSOLE &s3c24xx_serial_console
#else
#define S3C24XX_SERIAL_CONSOLE NULL
#endif
+#ifdef CONFIG_CONSOLE_POLL
+static int s3c24xx_serial_get_poll_char(struct uart_port *port);
+static void s3c24xx_serial_put_poll_char(struct uart_port *port,
+ unsigned char c);
+#endif
+
static struct uart_ops s3c24xx_serial_ops = {
.pm = s3c24xx_serial_pm,
.tx_empty = s3c24xx_serial_tx_empty,
@@ -899,6 +912,10 @@ static struct uart_ops s3c24xx_serial_ops = {
.request_port = s3c24xx_serial_request_port,
.config_port = s3c24xx_serial_config_port,
.verify_port = s3c24xx_serial_verify_port,
+#ifdef CONFIG_CONSOLE_POLL
+ .poll_get_char = s3c24xx_serial_get_poll_char,
+ .poll_put_char = s3c24xx_serial_put_poll_char,
+#endif
};
static struct uart_driver s3c24xx_uart_drv = {
@@ -1316,6 +1333,36 @@ s3c24xx_serial_console_txrdy(struct uart_port *port, unsigned int ufcon)
return (utrstat & S3C2410_UTRSTAT_TXE) ? 1 : 0;
}
+#ifdef CONFIG_CONSOLE_POLL
+/*
+ * Console polling routines for writing and reading from the uart while
+ * in an interrupt or debug context.
+ */
+
+static int s3c24xx_serial_get_poll_char(struct uart_port *port)
+{
+ struct s3c24xx_uart_port *ourport = to_ourport(port);
+ unsigned int ufstat;
+
+ ufstat = rd_regl(port, S3C2410_UFSTAT);
+ if (s3c24xx_serial_rx_fifocnt(ourport, ufstat) == 0)
+ return NO_POLL_CHAR;
+
+ return rd_regb(port, S3C2410_URXH);
+}
+
+static void s3c24xx_serial_put_poll_char(struct uart_port *port,
+ unsigned char c)
+{
+ unsigned int ufcon = rd_regl(cons_uart, S3C2410_UFCON);
+
+ while (!s3c24xx_serial_console_txrdy(port, ufcon))
+ cpu_relax();
+ wr_regb(cons_uart, S3C2410_UTXH, c);
+}
+
+#endif /* CONFIG_CONSOLE_POLL */
+
static void
s3c24xx_serial_console_putchar(struct uart_port *port, int ch)
{
--
1.7.7.3
^ permalink raw reply related [flat|nested] 8+ messages in thread
end of thread, other threads:[~2012-09-22 6:22 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2012-02-12 18:22 [PATCH] Add poll_get_char & poll_put_char to uart_ops for the samsung UARTS Julien Pichon
[not found] ` <CAHQa92X=9kiVhxCspcAR+dK-NbFqaUW2xTCjjDOAHGfDx_yMBQ@mail.gmail.com>
2012-02-25 11:05 ` Pichon Julien
2012-02-25 11:27 ` Heiko Stübner
2012-02-25 11:27 ` Heiko Stübner
2012-02-26 18:34 ` Denis 'GNUtoo' Carikli
2012-02-26 18:34 ` Denis 'GNUtoo' Carikli
2012-02-26 18:31 ` Denis 'GNUtoo' Carikli
2012-09-22 6:22 ` [PATCH] serial: samsung: Add poll_get_char & poll_put_char Doug Anderson
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