Commit Graph

32 Commits

Author SHA1 Message Date
Kiran Padwal
af300539de tty: serial: msm: Make of_device_id array const
Make of_device_id array const, because all OF functions handle it as const.

Signed-off-by: Kiran Padwal <kiran.padwal@smartplayin.com>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-07-23 18:56:18 -07:00
Stephen Boyd
68252424a7 tty: serial: msm: Support big-endian CPUs
To support big-endian CPUs use the string versions of the io
read/write macros on the TX/RX fifos and the non-raw variants of
the readl/writel macros throughout. This way we don't byteswap
the characters coming from the fifos but we properly deal with
the little-endian nature of the serial hardware while controlling
it.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-07-10 16:10:42 -07:00
Rickard Strandqvist
2b844ad2bf tty: serial: msm_serial.c: Cleaning up uninitialized variables
There is a risk that the variable will be used without being initialized.

This was largely found by using a static code analysis program called cppcheck.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-07-09 17:38:21 -07:00
Linus Torvalds
456febd299 ARM: SoC fixes for 3.16
A new set of bug fixes for 3.16, containing patches for seven platforms:
 
 at91:
     - drivers/misc fix for Kconfig PWM symbol
     - correction of several values in DT after conversion to CCF
     - fix at91sam9261/at91sam9261ek mistake in slow crystal vs. slow RC osc
 
 imx:
     - Use GPIO for card CD/WP on imx51-babbage and eukrea-mbimxsd51,
       because controller base CD/WP is not working in esdhc driver due to
       runtime PM support
     - A couple of random ventana gw5xxx board fixes
     - Add IMX_IPUV3_CORE back to defconfig, which gets lost when moving
       IPUv3 driver out of staging tree
     - Fix enet/fec clock selection on imx6sl
     - Fix display node on imx53-m53evk board
     - A couple of Cubox-i updates from Russell, which were omitted from
       the merge window due to dependency
 
 integrator:
     - fix an OF-related regression against 3.15
 
 mvebu:
     - mvebu (v7)
        - Fix broken SoC ID detection
        - Select ARM_CPU_SUSPEND for v7
        - Remove armada38x compatible string (no users yet)
        - Enable Dove SoC in mvebu_v7_defconfig
     - kirkwood
        - Fix phy-connection-type on GuruPlug board
 
 qcom:
     - enable gsbi driver in defconfig
     - fix section mismatch warning in serial driver
 
 samsung:
     - use WFI macro in platform_do_lowpower because exynos cpuhotplug
       includes a hardcoded WFI instruction and it causes compile error
       in Thumb-2 mode.
     - fix GIC reg sizes for exynos4 SoCs
     - remove reset timer counter value during boot and resume for mct
       to fix a big jump in printk timestamps
     - fix pm code to check cortex-A9 for another exynos SoCs
     - don't rely on firmware's secondary_cpu_start for mcpm
 
 sti:
     - Ethernet clocks were wrongly defined for STiH415/416 platforms
     - STiH416 B2020 revision E DTS file name contained uppercase, change to
       lowercase.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Arnd Bergmann:
 "A new set of bug fixes for 3.16, containing patches for seven
  platforms:

  at91:
    - drivers/misc fix for Kconfig PWM symbol
    - correction of several values in DT after conversion to CCF
    - fix at91sam9261/at91sam9261ek mistake in slow crystal vs. slow RC osc

  imx:
    - Use GPIO for card CD/WP on imx51-babbage and eukrea-mbimxsd51,
      because controller base CD/WP is not working in esdhc driver due to
      runtime PM support
    - A couple of random ventana gw5xxx board fixes
    - Add IMX_IPUV3_CORE back to defconfig, which gets lost when moving
      IPUv3 driver out of staging tree
    - Fix enet/fec clock selection on imx6sl
    - Fix display node on imx53-m53evk board
    - A couple of Cubox-i updates from Russell, which were omitted from
      the merge window due to dependency

  integrator:
    - fix an OF-related regression against 3.15

  mvebu:
    - mvebu (v7)
       - Fix broken SoC ID detection
       - Select ARM_CPU_SUSPEND for v7
       - Remove armada38x compatible string (no users yet)
       - Enable Dove SoC in mvebu_v7_defconfig
    - kirkwood
       - Fix phy-connection-type on GuruPlug board

  qcom:
    - enable gsbi driver in defconfig
    - fix section mismatch warning in serial driver

  samsung:
    - use WFI macro in platform_do_lowpower because exynos cpuhotplug
      includes a hardcoded WFI instruction and it causes compile error
      in Thumb-2 mode.
    - fix GIC reg sizes for exynos4 SoCs
    - remove reset timer counter value during boot and resume for mct
      to fix a big jump in printk timestamps
    - fix pm code to check cortex-A9 for another exynos SoCs
    - don't rely on firmware's secondary_cpu_start for mcpm

  sti:
    - Ethernet clocks were wrongly defined for STiH415/416 platforms
    - STiH416 B2020 revision E DTS file name contained uppercase, change to
      lowercase"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (33 commits)
  ARM: at91/dt: sam9261: remove slow RC osc
  ARM: at91/dt: define sam9261ek slow crystal frequency
  ARM: at91/dt: sam9261: correctly define mainck
  ARM: at91/dt: sam9n12: correct PLLA ICPLL and OUT values
  ARM: at91/dt: sam9x5: correct PLLA ICPLL and OUT values
  misc: atmel_pwm: fix Kconfig symbols
  ARM: integrator: fix OF-related regression
  ARM: mvebu: Fix the improper use of the compatible string armada38x using a wildcard
  ARM: dts: kirkwood: fix phy-connection-type for Guruplug
  ARM: EXYNOS: Don't rely on firmware's secondary_cpu_start for mcpm
  ARM: dts: imx51-eukrea-mbimxsd51-baseboard: unbreak esdhc.
  ARM: dts: imx51-babbage: Fix esdhc setup
  ARM: dts: mx5: Move the display out of soc {} node
  ARM: dts: mx5: Fix IPU port node placement
  ARM: mvebu: select ARM_CPU_SUSPEND for Marvell EBU v7 platforms
  ARM: mvebu: Fix broken SoC ID detection
  ARM: imx_v6_v7_defconfig: Enable CONFIG_IMX_IPUV3_CORE
  ARM: multi_v7_defconfig: Add QCOM GSBI driver
  ARM: stih41x: Rename stih416-b2020-revE.dts to stih416-b2020e.dts
  tty: serial: msm: Fix section mismatch warning
  ...
2014-06-25 12:19:01 -07:00
Peter Hurley
ef8b9ddcb4 serial: Fix IGNBRK handling
If IGNBRK is set without either BRKINT or PARMRK set, some uart
drivers send a 0x00 byte for BREAK without the TTYBREAK flag to the
line discipline, when it should send either nothing or the TTYBREAK flag
set. This happens because the read_status_mask masks out the BI
condition, which uart_insert_char() then interprets as a normal 0x00 byte.

SUS v3 is clear regarding the meaning of IGNBRK; Section 11.2.2, General
Terminal Interface - Input Modes, states:
  "If IGNBRK is set, a break condition detected on input shall be ignored;
   that is, not put on the input queue and therefore not read by any
   process."

Fix read_status_mask to include the BI bit if IGNBRK is set; the
lsr status retains the BI bit if a BREAK is recv'd, which is
subsequently ignored in uart_insert_char() when masked with the
ignore_status_mask.

Affected drivers:
8250 - all
serial_txx9
mfd
amba-pl010
amba-pl011
atmel_serial
bfin_uart
dz
ip22zilog
max310x
mxs-auart
netx-serial
pnx8xxx_uart
pxa
sb1250-duart
sccnxp
serial_ks8695
sirfsoc_uart
st-asc
vr41xx_siu
zs
sunzilog
fsl_lpuart
sunsab
ucc_uart
bcm63xx_uart
sunsu
efm32-uart
pmac_zilog
mpsc
msm_serial
m32r_sio

Unaffected drivers:
omap-serial
rp2
sa1100
imx
icom

Annotated for fixes:
altera_uart
mcf

Drivers without break detection:
21285
xilinx-uartps
altera_jtaguart
apbuart
arc-uart
clps711x
max3100
uartlite
msm_serial_hs
nwpserial
lantiq
vt8500_serial

Unknown:
samsung
mpc52xx_uart
bfin_sport_uart
cpm_uart/core

Fixes: Bugzilla #71651, '8250_core.c incorrectly handles IGNBRK flag'
Reported-by: Ivan <athlon_@mail.ru>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-19 13:04:52 -07:00
Kumar Gala
4cc29462cf tty: serial: msm: Fix section mismatch warning
WARNING: drivers/tty/built-in.o(.data+0x3544): Section mismatch in
reference from the variable msm_platform_driver to the function
.init.text:msm_serial_probe()
The variable msm_platform_driver references
the function __init msm_serial_probe()
If the reference is valid then annotate the
variable with __init* or __refdata (see linux/init.h) or name the variable:
*_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console

Signed-off-by: Kumar Gala <galak@codeaurora.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2014-06-18 14:59:53 +02:00
Andy Gross
31964ffebb tty: serial: msm: Remove direct access to GSBI
This patch removes direct access of the GSBI registers.  GSBI configuration
should be done through the GSBI driver directly.

Signed-off-by: Andy Gross <agross@codeaurora.org>
Signed-off-by: Kumar Gala <galak@codeaurora.org>
2014-05-29 11:06:20 -05:00
Stephen Boyd
f7e54d7ad7 msm_serial: Add support for poll_{get,put}_char()
Implement the polling functionality for the MSM serial driver.
This allows us to use KGDB on this hardware.

Cc: David Brown <davidb@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-12 11:34:23 -08:00
Stephen Boyd
a3957e80eb msm_serial: Send more than 1 character on the console w/ UARTDM
We recently added support to send more than one character at a
time for UARTDM hardware but we didn't add the same support in
the console code path. Add support here to speed up console
messages on UARTDM hardware.

Cc: David Brown <davidb@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-08-27 16:22:59 -07:00
Stephen Boyd
c3b5d3be7e msm_serial: Add support for non-GSBI UARTDM devices
Not all UARTDM hardware is part of a GSBI complex. Add support
for these devices and fix a bug where we assumed uartdm meant the
hardware was part of a GSBI complex.

Cc: David Brown <davidb@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-08-27 16:22:59 -07:00
Stephen Boyd
bfaddb7d13 msm_serial: Switch clock consumer strings and simplify code
In downstream kernel we've standardized the clock consumer names
that MSM device drivers use. Replace the uart specific clock
names in this driver with the more standard 'core' and 'iface'
names. Also simplify the code by assuming that clk_prepare_enable
and clk_disable_unprepare() will properly check for NULL pointers
(it will because MSM uses the common clock framework).

Cc: David Brown <davidb@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-08-27 16:22:58 -07:00
Viresh Kumar
f77232dab2 tty: serial: msm: drop uart_port->lock before calling tty_flip_buffer_push()
The current driver triggers a lockdep warning for if tty_flip_buffer_push() is
called with uart_port->lock locked. This never shows up on UP kernels and comes
up only on SMP kernels.

Crash looks like this (produced with samsung.c driver):

-----
[<c0014d58>] (unwind_backtrace+0x0/0xf8) from [<c0011908>] (show_stack+0x10/0x14)
[<c0011908>] (show_stack+0x10/0x14) from [<c035da34>] (dump_stack+0x6c/0xac)
[<c035da34>] (dump_stack+0x6c/0xac) from [<c01b59ac>] (do_raw_spin_unlock+0xc4/0xd8)
[<c01b59ac>] (do_raw_spin_unlock+0xc4/0xd8) from [<c03627e4>] (_raw_spin_unlock_irqrestore+0xc/0)
[<c03627e4>] (_raw_spin_unlock_irqrestore+0xc/0x38) from [<c020a1a8>] (s3c24xx_serial_rx_chars+0)
[<c020a1a8>] (s3c24xx_serial_rx_chars+0x12c/0x260) from [<c020aae8>] (s3c64xx_serial_handle_irq+)
[<c020aae8>] (s3c64xx_serial_handle_irq+0x48/0x60) from [<c006aaa0>] (handle_irq_event_percpu+0x)
[<c006aaa0>] (handle_irq_event_percpu+0x50/0x194) from [<c006ac20>] (handle_irq_event+0x3c/0x5c)
[<c006ac20>] (handle_irq_event+0x3c/0x5c) from [<c006d864>] (handle_fasteoi_irq+0x80/0x13c)
[<c006d864>] (handle_fasteoi_irq+0x80/0x13c) from [<c006a4a4>] (generic_handle_irq+0x20/0x30)
[<c006a4a4>] (generic_handle_irq+0x20/0x30) from [<c000f454>] (handle_IRQ+0x38/0x94)
[<c000f454>] (handle_IRQ+0x38/0x94) from [<c0008538>] (gic_handle_irq+0x34/0x68)
[<c0008538>] (gic_handle_irq+0x34/0x68) from [<c00123c0>] (__irq_svc+0x40/0x70)
Exception stack(0xc04cdf70 to 0xc04cdfb8)
df60:                                     00000000 00000000 0000166e 00000000
df80: c04cc000 c050278f c050278f 00000001 c04d444c 410fc0f4 c03649b0 00000000
dfa0: 00000001 c04cdfb8 c000f758 c000f75c 60070013 ffffffff
[<c00123c0>] (__irq_svc+0x40/0x70) from [<c000f75c>] (arch_cpu_idle+0x28/0x30)
[<c000f75c>] (arch_cpu_idle+0x28/0x30) from [<c0054888>] (cpu_startup_entry+0x5c/0x148)
[<c0054888>] (cpu_startup_entry+0x5c/0x148) from [<c0497aa4>] (start_kernel+0x334/0x38c)
BUG: spinlock lockup suspected on CPU#0, kworker/0:1/360
 lock: s3c24xx_serial_ports+0x1d8/0x370, .magic: dead4ead, .owner: <none>/-1, .owner_cpu: -1
CPU: 0 PID: 360 Comm: kworker/0:1 Not tainted 3.11.0-rc6-next-20130819-00003-g75485f1 #2
Workqueue: events flush_to_ldisc
[<c0014d58>] (unwind_backtrace+0x0/0xf8) from [<c0011908>] (show_stack+0x10/0x14)
[<c0011908>] (show_stack+0x10/0x14) from [<c035da34>] (dump_stack+0x6c/0xac)
[<c035da34>] (dump_stack+0x6c/0xac) from [<c01b581c>] (do_raw_spin_lock+0x100/0x17c)
[<c01b581c>] (do_raw_spin_lock+0x100/0x17c) from [<c03628a0>] (_raw_spin_lock_irqsave+0x20/0x28)
[<c03628a0>] (_raw_spin_lock_irqsave+0x20/0x28) from [<c0203224>] (uart_start+0x18/0x34)
[<c0203224>] (uart_start+0x18/0x34) from [<c01ef890>] (__receive_buf+0x4b4/0x738)
[<c01ef890>] (__receive_buf+0x4b4/0x738) from [<c01efb44>] (n_tty_receive_buf2+0x30/0x98)
[<c01efb44>] (n_tty_receive_buf2+0x30/0x98) from [<c01f2ba8>] (flush_to_ldisc+0xec/0x138)
[<c01f2ba8>] (flush_to_ldisc+0xec/0x138) from [<c0031af0>] (process_one_work+0xfc/0x348)
[<c0031af0>] (process_one_work+0xfc/0x348) from [<c0032138>] (worker_thread+0x138/0x37c)
[<c0032138>] (worker_thread+0x138/0x37c) from [<c0037a7c>] (kthread+0xa4/0xb0)
[<c0037a7c>] (kthread+0xa4/0xb0) from [<c000e5f8>] (ret_from_fork+0x14/0x3c)
-----

Release the port lock before calling tty_flip_buffer_push() and reacquire it
after the call.

Similar stuff was already done for few other drivers in the past, like:

commit 2389b27216
Author: Thomas Gleixner <tglx@linutronix.de>
Date:   Tue May 29 21:53:50 2007 +0100

    [ARM] 4417/1: Serial: Fix AMBA drivers locking

Cc: David Brown <davidb@codeaurora.org> (maintainer:ARM/QUALCOMM MSM...)
Cc: Daniel Walker <dwalker@fifo99.com> (maintainer:ARM/QUALCOMM MSM...)
Cc: Bryan Huntsman <bryanh@codeaurora.org> (maintainer:ARM/QUALCOMM MSM...)
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-08-27 16:17:34 -07:00
Jingoo Han
4f749f2482 serial: msm_serial: fix comparison of different types
Fix the following sparse warning:

drivers/tty/serial/msm_serial.c:237:37: error: incompatible types in comparison expression (different type sizes)

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-08-12 11:35:32 -07:00
Stephen Boyd
17fae28efe msm_serial: Send more than 1 character at a time on UARTDM
UARTDM cores have a TX fifo that can accept more than one
character per register write, but the msm_serial driver currently
only supports 1 character mode. Add support for this mode of operation
to speed up the transmit path on DM devices.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: David Brown <davidb@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-07-26 16:13:30 -07:00
Stephen Boyd
6909dadd91 msm_serial: Make baud_code detection more dynamic
Currently msm_set_baud_rate() assumes the uart clock rate is
1.8432 MHz. This is not always true, and limits our options to
program the baud rate. Instead of assuming the rate and
hard-coding the baud_code based on it, calculate the divider that
we want and try to find the closest baud_code that matches. This
allows us to support uarts with faster clock speeds.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: David Brown <davidb@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-07-26 16:13:29 -07:00
Stephen Boyd
f8fb952fd4 msm_serial: Fix sparse warnings
drivers/tty/serial/msm_serial.c:302:6: warning: symbol 'msm_set_mctrl' was
not declared. Should it be static?
drivers/tty/serial/msm_serial.c:597:17: warning: incorrect type in argument 2
(different address spaces)
drivers/tty/serial/msm_serial.c:597:17: expected void volatile [noderef] <asn:2>*addr
drivers/tty/serial/msm_serial.c:597:17: got unsigned int *
drivers/tty/serial/msm_serial.c:608:33: warning: incorrect type in argument 1
(different address spaces)
drivers/tty/serial/msm_serial.c:608:33: expected void volatile [noderef] <asn:2>*addr
drivers/tty/serial/msm_serial.c:608:33: got unsigned int *gsbi_base
drivers/tty/serial/msm_serial.c:648:37: warning: incorrect type in assignment
(different address spaces)
drivers/tty/serial/msm_serial.c:648:37: expected unsigned int *gsbi_base
drivers/tty/serial/msm_serial.c:648:37: got void [noderef] <asn:2>*

Mark the ioremapped memory as __iomem and use writel instead of
iowrite because we're not dealing with PCI devices. Also, mark
msm_set_mctrl() static because it isn't used outside this file.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: David Brown <davidb@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-07-26 16:13:29 -07:00
Stephen Boyd
4a5662d6a6 msm_serial: Fix NUL byte output on UARTDM
UARTDM serial devices require us to wait for the entire TX fifo
to drain before we can change the contents of the NCF_TX
register. Furthermore, if we write any characters to the TX fifo
within the same clock cycle of changing the NCF_TX register the
NCF_TX register won't latch properly.

To fix these issues we should read back the NCF_TX register to
delay any TX fifo accesses by a clock cycle and we should wait
for the TX fifo to drain (instead of just waiting for the fifo to
be ready to receive more characters). Failure to do so leads to
random NUL bytes interspersed in the output.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: David Brown <davidb@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-07-26 16:13:29 -07:00
Wei Yongjun
195be84aaa msm_serial: add missing iounmap() on error in msm_request_port()
Add the missing iounmap() before return from msm_request_port()
in the error handling case.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Reviewed-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-07-26 16:04:50 -07:00
Stephen Boyd
519b371dcd msm_serial: Use devm_clk_get() and properly return errors
Clocks are not clk_put() in this driver's error paths during
probe. The code that checks for clock errors also fails to
properly return the error code from the pclk member if it turns
out to be the failing clock, leading to potentially confusing
error values if the clk member is not an error pointer. Fix these
problems with devm_clk_get() and proper error checking.

Removing the clk_put() in msm_serial_remove() also points out
that msm_port is unused. Furthermore, msm_port is the wrong type
and so the clk_put() would be using the wrong pointer. Replace it
with the proper type and call uart_remove_one_port() to do the
proper cleanup.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David Brown <davidb@codeaurora.org>
2013-06-24 13:06:41 -07:00
Stephen Boyd
f98cf83d0c msm_serial: Convert to clk_prepare/unprepare
Add calls to clk_prepare and unprepare so that MSM can migrate to
the common clock framework.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David Brown <davidb@codeaurora.org>
2013-06-24 13:06:41 -07:00
Jiri Slaby
2e124b4a39 TTY: switch tty_flip_buffer_push
Now, we start converting tty buffer functions to actually use
tty_port. This will allow us to get rid of the need of tty in many
call sites. Only tty_port will needed and hence no more
tty_port_tty_get in those paths.

Now, the one where most of tty_port_tty_get gets removed:
tty_flip_buffer_push.

IOW we also closed all the races in drivers not using tty_port_tty_get
at all yet.

Also we move tty_flip_buffer_push declaration from include/linux/tty.h
to include/linux/tty_flip.h to all others while we are changing it
anyway.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-15 22:30:15 -08:00
Jiri Slaby
05c7cd3990 TTY: switch tty_insert_flip_string
Now, we start converting tty buffer functions to actually use
tty_port. This will allow us to get rid of the need of tty in many
call sites. Only tty_port will needed and hence no more
tty_port_tty_get in those paths.

tty_insert_flip_string this time.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-15 22:22:35 -08:00
Jiri Slaby
92a19f9cec TTY: switch tty_insert_flip_char
Now, we start converting tty buffer functions to actually use
tty_port. This will allow us to get rid of the need of tty in many
call sites. Only tty_port will needed and hence no more
tty_port_tty_get in those paths.

tty_insert_flip_char is the next one to proceed. This one is used all
over the code, so the patch is huge.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-15 22:21:36 -08:00
Bill Pemberton
ae8d8a1467 tty: remove use of __devexit
CONFIG_HOTPLUG is going away as an option so __devexit is no
longer needed.

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Jiri Slaby <jirislaby@gmail.com>
Cc: Alan Cox <alan@linux.intel.com>
Acked-by: Tobias Klauser <tklauser@distanz.ch>
Cc: Lucas Tavares <lucaskt@linux.vnet.ibm.com>
Cc: Daniel Walker <dwalker@fifo99.com>
Cc: Bryan Huntsman <bryanh@codeaurora.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Peter Korsgaard <jacmet@sunsite.dk>
Cc: Tony Prisk <linux@prisktech.co.nz>
Acked-by: David Brown <davidb@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-21 15:27:46 -08:00
David Brown
7b6031a7bc msm_serial: fix clock rate on DMA-based uarts
The driver explicitly requests a clock rate for the UART, but it is
off by a factor of four from the dividers that it programs into the
UART.  Fix this by setting the rate to 1/4 of the current value.

Signed-off-by: David Brown <davidb@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-10 16:33:36 -07:00
Linus Torvalds
367069f16e Merge branch 'next/dt' of git://git.linaro.org/people/arnd/arm-soc
* 'next/dt' of git://git.linaro.org/people/arnd/arm-soc:
  ARM: gic: use module.h instead of export.h
  ARM: gic: fix irq_alloc_descs handling for sparse irq
  ARM: gic: add OF based initialization
  ARM: gic: add irq_domain support
  irq: support domains with non-zero hwirq base
  of/irq: introduce of_irq_init
  ARM: at91: add at91sam9g20 and Calao USB A9G20 DT support
  ARM: at91: dt: at91sam9g45 family and board device tree files
  arm/mx5: add device tree support for imx51 babbage
  arm/mx5: add device tree support for imx53 boards
  ARM: msm: Add devicetree support for msm8660-surf
  msm_serial: Add devicetree support
  msm_serial: Use relative resources for iomem

Fix up conflicts in arch/arm/mach-at91/{at91sam9260.c,at91sam9g45.c}
2011-11-01 21:02:35 -07:00
David Brown
cfdad2aba7 msm_serial: Add devicetree support
Add devicetree support to the msm_serial driver.  Clocks are still
queried by direct name from the driver until device tree clock support
is implemented.

Change-Id: Ia6b2ddfcf1e5dc3bd25dd502662f971202e6d56f
Signed-off-by: David Brown <davidb@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
2011-08-29 12:47:36 -07:00
David Brown
886a451bd2 msm_serial: Use relative resources for iomem
Device tree iomem resources are only accessible by index, and not by
name.  The msm_serial devices always have either 1 or 2 iomem
resources, that are always in the same order.  Convert the
platform_get_resource_byname into just platform_get_resource to
facilitate device tree conversion.

Change-Id: I4fd0f1037e07f2725a2a25c7b07dea2ca9397db7
Signed-off-by: David Brown <davidb@codeaurora.org>
2011-08-29 12:47:35 -07:00
Jiri Slaby
e150c4ccbe TTY: msm_serial, remove unneeded console set
It doesn't make sense to set console to uart_port in console->setup.
At that time the console is set by uart_add_one_port already.

The call chain looked like:
uart_add_one_port()
  uport->cons = drv->cons;   <= once
  uart_configure_port()
    register_console()
     console->setup()
       port->cons = co;      <= second time

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-08-23 10:34:05 -07:00
Jovi Zhang
99edb3d10a tty: remove invalid location line in file header
remove invalid location line in each file header after location
moved from driver/char to driver/tty

Signed-off-by: Jovi Zhang <bookjovi@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-19 16:33:36 -07:00
David Brown
c243e52843 Merge branch 'msm-uart' into for-next
* msm-uart:
  serial: msm: Add support for UARTDM cores
  msm: Add name field to UART resources
2011-01-24 11:16:43 -08:00
Greg Kroah-Hartman
ab4382d274 tty: move drivers/serial/ to drivers/tty/serial/
The serial drivers are really just tty drivers, so move them to
drivers/tty/ to make things a bit neater overall.

This is part of the tty/serial driver movement proceedure as proposed by
Arnd Bergmann and approved by everyone involved a number of months ago.

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Rogier Wolff <R.E.Wolff@bitwizard.nl>
Cc: Michael H. Warfield <mhw@wittsend.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-01-13 12:10:18 -08:00