gmane.linux.serial

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mit dem Folowin

[PATCH 0/2] serial: sh-sci: HSCIF support

Simon Horman — 2013-06-17T02:42:12

Hi Greg, Hi All,

this short series adds HSCIF support to the sh-sci driver
and enhances the r8a7790 SoC to not use external clocks for SCIF.

I have included these two patches in a single series as the second
patch has a build-time dependency on the first.

Greg, would it be possible for you to review at least the first patch and
if it is ok either:
* Ack the first patch so I can merge it through the renesas tree or;
* Take both patches, I have supplied Acks.

In the case of the latter I can supply a pull request if you like.

Ulrich Hecht (2):
  serial: sh-sci: HSCIF support
  ARM: shmobile: r8a7790: don't use external clock for SCIFs

 arch/arm/mach-shmobile/setup-r8a7790.c |   16 ++++-
 drivers/tty/serial/sh-sci.c            |  102 +++++++++++++++++++++++++++++---
 include/linux/serial_sci.h             |   12 +++-
 include/uapi/linux/serial_core.h       |    3 +
 4 files changed, 120 insertions(+), 13 deletions(-)

[PATCH] serial: mfd: Add sysrq support

Feng Tang — 2013-06-14T10:11:17

When using MFD HSU based console, sometime we need the sysrq function
to help debugging kernel. The sysrq code is basically there, this
patch just simply enable it.

Signed-off-by: Feng Tang <feng.tang< at >intel.com>
---
 drivers/tty/serial/mfd.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/tty/serial/mfd.c b/drivers/tty/serial/mfd.c
index 5f4765a..e266eca 100644
--- a/drivers/tty/serial/mfd.c
+++ b/drivers/tty/serial/mfd.c
< at >< at > -21,6 +21,10 < at >< at >
  *    be triggered
  */
 
+#if defined(CONFIG_SERIAL_MFD_HSU_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
+#define SUPPORT_SYSRQ
+#endif
+
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/console.h>

API to flush rx fifo?

Grant Edwards — 2013-06-12T20:03:50

I see the uart_ops.flush_buffer method which is used to flush the
UART's tx fifo (presumably when the user calls tcflush(TCOFLUSH)).

How does the rx fifo get flushed when the user calls tcflush(TCIFLUSH)?

[GIT PATCH] TTY/Serial fixes for 3.10-rc5

Greg KH — 2013-06-06T17:58:05

The following changes since commit e4aa937ec75df0eea0bee03bffa3303ad36c986b:

  Linux 3.10-rc3 (2013-05-26 16:00:47 -0700)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git/ tags/tty-3.10-rc4

for you to fetch changes up to 317a68427d4b0a302ecff252fd83a00557947db8:

  Revert "serial: 8250: Make SERIAL_8250_RUNTIME_UARTS work correctly" (2013-06-03 10:08:28 -0700)

----------------------------------------------------------------
TTY/Serial driver fixes for 3.10-rc4

Here are some small bugfixes, and one revert, of serial driver issues
that have been reported.

Signed-off-by: Greg Kroah-Hartman <gregkh< at >linuxfoundation.org>

----------------------------------------------------------------
Chander Kashyap (1):
      serial: samsung: enable clock before clearing pending interrupts during init

Kyle McMartin (1):
      Revert "serial: 8250: Make SERIAL_8250_RUNTIME_UARTS work correctly"

Lucas Stach (1):
      serial/imx: disable hardware flow control at start

[PATCH 01/13] ARM: Exynos: initialize l2x0 cache controller only for cortex-a9 based SoCs

Chander Kashyap — 2013-06-06T11:01:15

Only cortex-a9 based Exynos SoCs have l2x0 cache controller. Hence instead of
checking for every SoC with soc_is_xxx, just check for cpu part number and
initialize the cache controller for cortex-a9 based SoCs.

Signed-off-by: Chander Kashyap <chander.kashyap< at >linaro.org>
---
 arch/arm/mach-exynos/common.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-exynos/common.c b/arch/arm/mach-exynos/common.c
index 8ce2db4..bad000e 100644
--- a/arch/arm/mach-exynos/common.c
+++ b/arch/arm/mach-exynos/common.c
< at >< at > -35,6 +35,7 < at >< at >
 #include <asm/mach/map.h>
 #include <asm/mach/irq.h>
 #include <asm/cacheflush.h>
+#include <asm/cputype.h>
 
 #include <mach/regs-irq.h>
 #include <mach/regs-pmu.h>
< at >< at > -520,7 +521,7 < at >< at > static int __init exynos4_l2x0_cache_init(void)
 {
 int ret;
 
-if (soc_is_exynos5250() || soc_is_exynos5440())
+if (read_cpuid_part_number() != ARM_CPU_PART_CORTEX_A9)
 return 0;
 
 ret = l2x0_of_init(L2_AUX_VAL, L2_AUX_MASK);

[PATCH] tty/serial/sirf: fix error propagation in sirfsoc_uart_probe()

Alexey Khoroshilov — 2013-06-05T21:28:12

If pinctrl_get_select_default() fails, sirfsoc_uart_probe()
returns IS_ERR(result) instead of PTR_ERR(result).

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov< at >ispras.ru>
---
 drivers/tty/serial/sirfsoc_uart.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/tty/serial/sirfsoc_uart.c b/drivers/tty/serial/sirfsoc_uart.c
index 03465b6..1fd564b 100644
--- a/drivers/tty/serial/sirfsoc_uart.c
+++ b/drivers/tty/serial/sirfsoc_uart.c
< at >< at > -687,9 +687,10 < at >< at > int sirfsoc_uart_probe(struct platform_device *pdev)
 
 if (sirfport->hw_flow_ctrl) {
 sirfport->p = pinctrl_get_select_default(&pdev->dev);
-ret = IS_ERR(sirfport->p);
-if (ret)
+if (IS_ERR(sirfport->p)) {
+ret = PTR_ERR(sirfport->p);
 goto err;
+}
 }
 
 sirfport->clk = clk_get(&pdev->dev, NULL);

[PATCH v3 1/3] serial: imx: Fix warning when !CONFIG_SERIAL_IMX_CONSOLE

Fabio Estevam — 2013-06-05T03:58:46

From: Fabio Estevam <fabio.estevam< at >freescale.com>

When CONFIG_SERIAL_IMX_CONSOLE is not selected the following build warnings
appear:

drivers/tty/serial/imx.c:274:13: warning: 'imx_port_ucrs_save' defined but not used [-Wunused-function]
drivers/tty/serial/imx.c:283:13: warning: 'imx_port_ucrs_restore' defined but not used [-Wunused-function]

imx_port_ucrs_save() and imx_port_ucrs_restore() are only used when 
CONFIG_CONSOLE_POLL or CONFIG_SERIAL_IMX_CONSOLE are selected, so protect these
functions declaration with a proper ifdef.

Signed-off-by: Fabio Estevam <fabio.estevam< at >freescale.com>
---
Changes since v2:
- Do the same as in v1
 drivers/tty/serial/imx.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index a07e94f..981749f 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
< at >< at > -272,6 +272,7 < at >< at > static inline int is_imx21_uart(struct imx_port *sport)
 /*
  * Save and restore functions for UCR1, UCR2 and UCR3 registers
  */
+#if

[PATCH -next] serial: omap: fix potential NULL pointer dereference in serial_omap_runtime_suspend()

Wei Yongjun — 2013-06-05T02:04:49

From: Wei Yongjun <yongjun_wei< at >trendmicro.com.cn>

The dereference to 'up' should be moved below the NULL test.
Introduced by commit ddd85e225c8885b5e4419b0499ab27100e7c366a
(serial: omap: prevent runtime PM for "no_console_suspend")

Signed-off-by: Wei Yongjun <yongjun_wei< at >trendmicro.com.cn>
---
 drivers/tty/serial/omap-serial.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index 1aaeca8..156b5aa 100644
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c
< at >< at > -1613,6 +1613,9 < at >< at > static int serial_omap_runtime_suspend(struct device *dev)
 struct uart_omap_port *up = dev_get_drvdata(dev);
 struct omap_uart_port_info *pdata = dev->platform_data;
 
+if (!up)
+return -EINVAL;
+
 /*
 * When using 'no_console_suspend', the console UART must not be
 * suspended. Since driver suspend is managed by runtime suspend,
< at >< at > -1623,9 +1626,6 < at >< at > static int serial_omap_runtime_suspend(struct device *de

[PATCH v2 1/2] serial: imx: Remove SERIAL_IMX_CONSOLE

Fabio Estevam — 2013-06-04T17:08:37

When CONFIG_SERIAL_IMX_CONSOLE is not selected the following build warnings
appear:

drivers/tty/serial/imx.c:274:13: warning: 'imx_port_ucrs_save' defined but not used [-Wunused-function]
drivers/tty/serial/imx.c:283:13: warning: 'imx_port_ucrs_restore' defined but not used [-Wunused-function]

Instead of fixing the warning by protecting mx_port_ucrs_save() and 
imx_port_ucrs_restore() with an "ifdef", let's get rid of the SERIAL_IMX_CONSOLE
option and make the console support always present.

While at it, change the CPU vendor name to Freescale. 

Suggested-by: Sascha Hauer <s.hauer< at >pengutronix.de>
Signed-off-by: Fabio Estevam <fabio.estevam< at >freescale.com>
---
Changes since v1:
- Fix the warning by removing SERIAL_IMX_CONSOLE

 drivers/tty/serial/Kconfig | 18 ++----------------
 drivers/tty/serial/imx.c   | 10 ++--------
 2 files changed, 4 insertions(+), 24 deletions(-)

diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index 7e7006f..a9ae1cd 100644
--- a/drivers/tty/serial/Kconfig
+++

[PATCH] tty: serial: Enable uartlite for ARM zynq

Michal Simek — 2013-06-04T12:20:43

Enable it in Kconfig.

Signed-off-by: Michal Simek <michal.simek< at >xilinx.com>
---
 drivers/tty/serial/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index 7e7006f..64250b1 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
< at >< at > -576,7 +576,7 < at >< at > config SERIAL_IMX_CONSOLE

 config SERIAL_UARTLITE
 tristate "Xilinx uartlite serial port support"
-depends on PPC32 || MICROBLAZE || MFD_TIMBERDALE
+depends on PPC32 || MICROBLAZE || MFD_TIMBERDALE || ARCH_ZYNQ
 select SERIAL_CORE
 help
   Say Y here if you want to use the Xilinx uartlite serial controller.
--
1.8.2.3

[PATCH 1/3] serial: imx: Fix warning when !CONFIG_SERIAL_IMX_CONSOLE

Fabio Estevam — 2013-06-04T02:51:46

From: Fabio Estevam <fabio.estevam< at >freescale.com>

When CONFIG_SERIAL_IMX_CONSOLE is not selected the following build warnings
appear:

drivers/tty/serial/imx.c:274:13: warning: 'imx_port_ucrs_save' defined but not used [-Wunused-function]
drivers/tty/serial/imx.c:283:13: warning: 'imx_port_ucrs_restore' defined but not used [-Wunused-function]

imx_port_ucrs_save() and imx_port_ucrs_restore() are only used when 
CONFIG_CONSOLE_POLL or CONFIG_SERIAL_IMX_CONSOLE are selected, so protect these
functions declaration with a proper ifdef.

Signed-off-by: Fabio Estevam <fabio.estevam< at >freescale.com>
---
 drivers/tty/serial/imx.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 72bc1db..90eba78 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
< at >< at > -271,6 +271,7 < at >< at > static inline int is_imx21_uart(struct imx_port *sport)
 /*
  * Save and restore functions for UCR1, UCR2 and UCR3 registers
  */
+#if defined(CONFIG_CONSOLE_POLL) || defined(

[PATCH V2] serial: imx: enable the clocks only when the uart is used

Huang Shijie — 2013-06-04T01:59:33

Current code opens the clocks when the uart driver is probed.
This will wastes some power if several uarts are enabled, but not really
used.

So close these clocks for uart, and enable the clocks only when
the uart is used.

Signed-off-by: Huang Shijie <b32955< at >freescale.com>
---
v1 --> v2:
check the return value of clk_prepare_enable().
---
 drivers/tty/serial/imx.c |   17 ++++++++++++++---
 1 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 72bc1db..7cc4810 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
< at >< at > -699,6 +699,14 < at >< at > static int imx_startup(struct uart_port *port)
 int retval;
 unsigned long flags, temp;
 
+retval = clk_prepare_enable(sport->clk_per);
+if (retval)
+goto error_out1;
+
+retval = clk_prepare_enable(sport->clk_ipg);
+if (retval)
+goto error_out1;
+
 imx_setup_ufcr(sport, 0);
 
 /* disable the DREN bit (Data Ready interrupt enable) before
< at >< at > -884,6 +892,9 < at >< at > static void imx_shutdown(st

[PATCH v6] tty: serial: add Freescale lpuart driver support

Jingchang Lu — 2013-06-04T01:27:50

Add Freescale lpuart driver support. The lpuart device
can be found on Vybrid VF610 and Layerscape LS-1 SoCs.

Signed-off-by: Jingchang Lu <b35083< at >freescale.com>
---
changes in v6:
  Enable being built as a module support.

changes in v5:
 Coding style fix, remove redundant code.
 Checking clk_prepare_enable return value.
 Using devm_ioremap_resource instead of devm_request_and_ioremap.

changes in v4:
 Change Vybrid VF610 SoC compatible string to "fsl,vf610-lpuart"

changes in v3:
 Use general driver name lpuart instead of mvf for further share between SoCs.
 Add bind doc in Documentation/devicetree/bindings/tty/serial.
 Remove unused #include header lines and clean up code.

changes in v2:
 Remove unused variables and clean up the code.

 .../devicetree/bindings/tty/serial/fsl-lpuart.txt  |  14 +
 drivers/tty/serial/Kconfig                         |  14 +
 drivers/tty/serial/Makefile                        |   1 +
 drivers/tty/serial/fsl_lpuart.c                    | 873 +++++++++++++++++++++
 include/uapi

MAX14830 serial driver

Alexander Shiyan — 2013-06-01T18:37:01

Hello All.

For all who ask me about MAX14830 support in the max310x driver,
support is completed, preliminary version I can send to test.
Once driver is being tested, patch for this chip will be posted
for apply in the kernel. So if you want to test initial version,
please mail me.
Thanks.

[PATCH] serial/imx: disable hardware flow control at startup

Markus Pargmann — 2013-05-30T13:47:04

From: Lucas Stach <l.stach< at >pengutronix.de>

We only want to enable hardware flow control if RTS/CTS pins
are connected.

Signed-off-by: Lucas Stach <l.stach< at >pengutronix.de>
Signed-off-by: Markus Pargmann <mpa< at >pengutronix.de>
---

 drivers/tty/serial/imx.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 147c9e1..8cdfbd3 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
< at >< at > -761,6 +761,8 < at >< at > static int imx_startup(struct uart_port *port)
 
 temp = readl(sport->port.membase + UCR2);
 temp |= (UCR2_RXEN | UCR2_TXEN);
+if (!sport->have_rtscts)
+temp |= UCR2_IRTS;
 writel(temp, sport->port.membase + UCR2);
 
 if (USE_IRDA(sport)) {

Connection to a 3G USB Module using USB-Serial

Fabio Fumi — 2013-05-30T12:54:40

I'm struggling with this issue since a while and as the author of the
USB-Serial module I thought experts here might provide some help... As
it's a USB-serail issue, I've posted on both USB and Serial lists.
thanks in advance!

The problem is about connecting with a 3G USB modem, a ZTE MF-210
mini-pci board; plugged as a daughter board inside an Android tablet.
I have posted already on a couple forums, but got no useful feedback
yet.

As soon as I power up the module I get the expected /dev/ttyUSB0-3 and
that's fine, so far:

<6>usb 1-1.1: new high speed USB device using emxx-ehci-driver and address 3
<6>option 1-1.1:1.0: GSM modem (1-port) converter detected
<6>usb 1-1.1: GSM modem (1-port) converter now attached to ttyUSB0
<6>option 1-1.1:1.1: GSM modem (1-port) converter detected
<6>usb 1-1.1: GSM modem (1-port) converter now attached to ttyUSB1
<6>option 1-1.1:1.2: GSM modem (1-port) converter detected
<6>usb 1-1.1: GSM modem (1-port) converter now attached to ttyUSB2
<6>option 1-1.1:1.3: GSM modem (1-po

[PATCH v5] tty: serial: add Freescale lpuart driver support

Jingchang Lu — 2013-05-30T05:53:37

Add Freescale lpuart driver support. The lpuart device
can be found on Vybrid VF610 and Layerscape LS-1 SoCs.

Signed-off-by: Jingchang Lu <b35083< at >freescale.com>
---
changes in v5:
 Coding style fix, remove redundant code.
 Checking clk_prepare_enable return value.
 Using devm_ioremap_resource instead of devm_request_and_ioremap.

changes in v4:
 Change Vybrid VF610 SoC compatible string to "fsl,vf610-lpuart"

changes in v3:
 Use general driver name lpuart instead of mvf for further share between SoCs.
 Add bind doc in Documentation/devicetree/bindings/tty/serial.
 Remove unused #include header lines and clean up code.

changes in v2:
 Remove unused variables and clean up the code.

 .../devicetree/bindings/tty/serial/fsl-lpuart.txt  |  14 +
 drivers/tty/serial/Kconfig                         |  14 +
 drivers/tty/serial/Makefile                        |   1 +
 drivers/tty/serial/fsl_lpuart.c                    | 873 +++++++++++++++++++++
 include/uapi/linux/serial_core.h                   |   3 +
 5 files ch

[PATCH] serail: imx: add support for DTE mode

Huang Shijie — 2013-05-30T06:07:12

The uart works in the DCE mode by default, but sometime we need it
works at the DTE mode.

This patch adds the support for the DTE mode.

Signed-off-by: Huang Shijie <b32955< at >freescale.com>
---
 .../bindings/tty/serial/fsl-imx-uart.txt           |    3 +++
 drivers/tty/serial/imx.c                           |    6 ++++++
 2 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/Documentation/devicetree/bindings/tty/serial/fsl-imx-uart.txt b/Documentation/devicetree/bindings/tty/serial/fsl-imx-uart.txt
index b462d0c..c662eb3 100644
--- a/Documentation/devicetree/bindings/tty/serial/fsl-imx-uart.txt
+++ b/Documentation/devicetree/bindings/tty/serial/fsl-imx-uart.txt
< at >< at > -8,6 +8,8 < at >< at > Required properties:
 Optional properties:
 - fsl,uart-has-rtscts : Indicate the uart has rts and cts
 - fsl,irda-mode : Indicate the uart supports irda mode
+- fsl,dte-mode : Indicate the uart works in DTE mode. The uart works
+                  is DCE mode by default.
 
 Example:
 
< at >< at > -16,4 +18,5 < at >< at > serial< at >73fbc000 {
 reg =

[PATCH] serial: samsung: missing uart_unregister_driver() on error in s3c24xx_serial_modinit()

Wei Yongjun — 2013-05-29T05:47:09

From: Wei Yongjun <yongjun_wei< at >trendmicro.com.cn>

Add the missing uart_unregister_driver() before return from
s3c24xx_serial_modinit() in the error handling case.

Signed-off-by: Wei Yongjun <yongjun_wei< at >trendmicro.com.cn>
---
 drivers/tty/serial/samsung.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c
index 8942941..1c2b8c3 100644
--- a/drivers/tty/serial/samsung.c
+++ b/drivers/tty/serial/samsung.c
< at >< at > -1798,7 +1798,13 < at >< at > static int __init s3c24xx_serial_modinit(void)
 return ret;
 }
 
-return platform_driver_register(&samsung_serial_driver);
+ret = platform_driver_register(&samsung_serial_driver);
+if (ret < 0) {
+pr_err("Failed to register platform driver\n");
+uart_unregister_driver(&s3c24xx_uart_drv);
+}
+
+return ret;
 }
 
 static void __exit s3c24xx_serial_modexit(void)

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[PATCH] driver: tty: add missing unregister in err case

Libo Chen — 2013-05-29T02:33:16

when platform_driver_register broken, we should unregister ucc_uart_driver

Signed-off-by: Libo chen <libo.chen< at >huawei.com>
---
 drivers/tty/serial/ucc_uart.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/drivers/tty/serial/ucc_uart.c b/drivers/tty/serial/ucc_uart.c
index 7355303..f86f447 100644
--- a/drivers/tty/serial/ucc_uart.c
+++ b/drivers/tty/serial/ucc_uart.c
< at >< at > -1518,9 +1518,11 < at >< at > static int __init ucc_uart_init(void)
 }

 ret = platform_driver_register(&ucc_uart_of_driver);
-if (ret)
+if (ret) {
 printk(KERN_ERR
        "ucc-uart: could not register platform driver\n");
+uart_unregister_driver(&ucc_uart_driver);
+}

 return ret;
 }