- 18 7月, 2014 1 次提交
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由 Nobuhiro Iwamatsu 提交于
Currently, the decimal point is discarded calculation of BRR. Therefore, it can not calculate a value close to the correct value. This patch fixes this problem by using DIV_ROUND_CLOSEST. Signed-off-by: NNobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 10 7月, 2014 1 次提交
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由 Alexander Shiyan 提交于
Signed-off-by: NAlexander Shiyan <shc_work@mail.ru> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 25 4月, 2014 2 次提交
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由 Greg Kroah-Hartman 提交于
This reverts commit fcbee4d4. It wasn't quite ready to go in yet, sorry about that. Cc: Simon Horman <horms@verge.net.au> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Simon Horman 提交于
According to the platform data for the legacy-C initialisation of sh-sci for the r8a7779 SoC and my own testing the SCIx_SH4_SCIF_REGTYPE bit of scscr needs to be set. Signed-off-by: NSimon Horman <horms+renesas@verge.net.au> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 19 3月, 2014 1 次提交
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由 Viresh Kumar 提交于
Two cpufreq notifiers CPUFREQ_RESUMECHANGE and CPUFREQ_SUSPENDCHANGE have not been used for some time, so remove them to clean up code a bit. Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org> Reviewed-by: NSrivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> [rjw: Changelog] Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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- 18 3月, 2014 5 次提交
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由 Joe Perches 提交于
Add missing newlines and coalesce formats. Realign arguments. Signed-off-by: NJoe Perches <joe@perches.com> Acked-by: NGeert Uytterhoeven <geert@linux-m68k.org> Acked-by: NSimon Horman <horms+renesas@verge.net.au> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Geert Uytterhoeven 提交于
Signed-off-by: NGeert Uytterhoeven <geert+renesas@linux-m68k.org> Acked-by: NSimon Horman <horms@verge.net.au> Acked-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Geert Uytterhoeven 提交于
Signed-off-by: NGeert Uytterhoeven <geert+renesas@linux-m68k.org> Acked-by: NSimon Horman <horms@verge.net.au> Acked-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Geert Uytterhoeven 提交于
Signed-off-by: NGeert Uytterhoeven <geert+renesas@linux-m68k.org> Acked-by: NSimon Horman <horms@verge.net.au> Acked-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Geert Uytterhoeven 提交于
Make banner const while we're at it Signed-off-by: NGeert Uytterhoeven <geert+renesas@linux-m68k.org> Acked-by: NSimon Horman <horms@verge.net.au> Acked-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 01 3月, 2014 1 次提交
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由 Geert Uytterhoeven 提交于
If cpufreq_register_notifier() fails, we have to remove the port added by sci_probe_single(), which is not done by sci_cleanup_single(). Else the serial port stays active from the point of view of the serial subsystem, and it may crash when userspace getty is started, or when the loadable driver module is unloaded. This was introduced by commit 6dae1421 ("serial: sh-sci: Fix probe error paths"). Signed-off-by: NGeert Uytterhoeven <geert+renesas@linux-m68k.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 14 2月, 2014 1 次提交
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由 Jingoo Han 提交于
Fix the following compile warning about cast to pointer from integer of different size. drivers/tty/serial/sh-sci.c:2021:19: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] Signed-off-by: NJingoo Han <jg1.han@samsung.com> Acked-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 24 12月, 2013 14 次提交
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由 Bastian Hecht 提交于
Extend the driver to with support for SCIx device tree bindings. A minimal set of features is supported, additional properties can be added later should the need to describe more device features arise. Signed-off-by: NBastian Hecht <hechtb+renesas@gmail.com> Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: NSimon Horman <horms+renesas@verge.net.au> Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
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由 Laurent Pinchart 提交于
The fields are not used anymore by board files, remove them. Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
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由 Laurent Pinchart 提交于
The field isn't set by any board, remote it. Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
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由 Laurent Pinchart 提交于
Computing the baud rate register value requires knowledge of the hardware sampling rate. This information is currently encoded in a baud rate calculation algorithm ID passed through platform data. However, it can be derived from the port type directly in most cases. Compute the sampling rate internally in the driver if the baud rate calculation algorithm ID isn't specified, and allow platforms to override the sampling rate through platform data in special cases (this is only required for SCIFA ports on sh7723 and sh7724, the reason needs to be investigated). Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
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由 Laurent Pinchart 提交于
The overrun bit index is a property of the hardware. It's currently computed based on a different and unrelated hardware property, the baud rate calculation algorithm. Compute it using hardware identification information only. Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
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由 Laurent Pinchart 提交于
The driver requests at initialization time GPIOs passed through platform data. No platform makes use of this feature, remove it. Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
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由 Laurent Pinchart 提交于
None of the fields is ever set by board code, and both of them are set in the driver at probe time. Move them out of struct plat_sci_port to struct sci_port. Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
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由 Laurent Pinchart 提交于
Memory and IRQ resources are currently passed to the driver through platform data. Support passing them through the standard platform resources mechanism instead. This deprecates platform data resources. Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
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由 Laurent Pinchart 提交于
The IRQ number can't be modified by the user as the port is fixed. There's no need to check the new IRQ number as it will be ignored by the core. Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
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由 Laurent Pinchart 提交于
The base address, IRQ and baud rate generator parent clock rate can't be changed by userspace. Mark the port as fixed. Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
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由 Laurent Pinchart 提交于
The driver checks if the interrupt number is greater than nr_irqs and returns an error in that case. The same check is already performed by the caller, remove it. Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
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由 Laurent Pinchart 提交于
Rewrite the baud rate register value calculations in easier to read forms. The computed value isn't modified. Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
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由 Laurent Pinchart 提交于
The algorithm isn't used, remove it. Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
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由 Laurent Pinchart 提交于
This helps locating duplicates. Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
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- 14 12月, 2013 2 次提交
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由 Laurent Pinchart 提交于
Turn clk_enable() and clk_disable() calls into clk_prepare_enable() and clk_disable_unprepare() to get ready for the migration to the common clock framework. Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: NMagnus Damm <damm@opensource.se> Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
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由 Laurent Pinchart 提交于
The break timer accesses hardware registers and thus requires the port to be enabled. It currently ensures this by enabling the port at the beginning of the timer handler, and disabling it at the end. However, the enable/disable operations call the runtime PM sync functions, which are not allowed in atomic context. The current situation is thus broken. This change relies on non-atomic code to enable/disable the port. The break timer will only be started from the IRQ handler, which already runs with the port enabled. We just need to ensure that the port won't be disabled with the timer running, and that's easily done by just cancelling the timer in the port disable function. Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: NMagnus Damm <damm@opensource.se> Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
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- 12 12月, 2013 1 次提交
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由 Laurent Pinchart 提交于
Use the %zu and %pad printk specifiers to print size_t and dma_addr_t variables, and cast pointers to uintptr_t instead of unsigned int where applicable. This fixes warnings on platforms where pointers and/or dma_addr_t have a different size than int. Cc: linux-serial@vger.kernel.org Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
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- 25 10月, 2013 1 次提交
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由 Vinod Koul 提交于
Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: NDan Williams <dan.j.williams@intel.com> Acked-by: NLinus Walleij <linus.walleij@linaro.org> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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- 02 8月, 2013 1 次提交
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由 Jingoo Han 提交于
Use the wrapper function for retrieving the platform data instead of accessing dev->platform_data directly Signed-off-by: NJingoo Han <jg1.han@samsung.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 01 8月, 2013 1 次提交
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由 Jingoo Han 提交于
Use the wrapper function for retrieving the platform data instead of accessing dev->platform_data directly. Signed-off-by: NJingoo Han <jg1.han@samsung.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 26 6月, 2013 1 次提交
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由 Simon Horman 提交于
This change addresses two warnings that are flagged by gcc relating to potential access to the ssr and cks variables while they are uninitialised. I have addressed this by initialising the values to the defaults present in sci_baud_calc_hscif(). It is my analysis that cks is always initialised if used but that without this change ssr may be accessed while uninitialised. The code altered by this patch was introduced by commit f303b364 ("serial: sh-sci: HSCIF support"). Reported-by: NArnd Bergmann <arnd@arndb.de> Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
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- 17 6月, 2013 1 次提交
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由 Ulrich Hecht 提交于
Adds support for "High Speed Serial Communications Interface with FIFO", essentially a SCIF with 128-byte FIFOs and more accurate baud rate generator. Signed-off-by: NUlrich Hecht <ulrich.hecht@gmail.com> Acked-by: NPaul Mundt <lethal@linux-sh.org> Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
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- 16 1月, 2013 3 次提交
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由 Jiri Slaby 提交于
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: NJiri Slaby <jslaby@suse.cz> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Jiri Slaby 提交于
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: NJiri Slaby <jslaby@suse.cz> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Jiri Slaby 提交于
Now, we start converting tty buffer functions to actually use tty_port. This will allow us to get rid of the need of tty pointer in many call sites. Only tty_port will be needed and hence no more tty_port_tty_get calls in those paths. Here we start with tty_buffer_request_room. Signed-off-by: NJiri Slaby <jslaby@suse.cz> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 22 11月, 2012 1 次提交
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由 Bill Pemberton 提交于
CONFIG_HOTPLUG is going away as an option so __devinit is no longer needed. Signed-off-by: NBill Pemberton <wfp5p@virginia.edu> Cc: Jiri Slaby <jirislaby@gmail.com> Cc: Alan Cox <alan@linux.intel.com> Cc: Lucas Tavares <lucaskt@linux.vnet.ibm.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Peter Korsgaard <jacmet@sunsite.dk> Cc: Tony Prisk <linux@prisktech.co.nz> Acked-by: NTobias Klauser <tklauser@distanz.ch> Acked-by: NNicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 16 11月, 2012 2 次提交
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由 Shinya Kuribayashi 提交于
In the previous commit, console write function (serial_console_write) is changed to disable SCI interrupts while printing console strings. This introduces possible race cases in the serial startup / shutdown functions on SMP systems. This patch fixes the sh-sci in the same way as commit 9ec1882d (tty: serial: imx: console write routing is unsafe on SMP, from Xinyu Chen <xinyu.chen@freescale.com>, 2012-08-27) did. There could be several consumers of the console, * the kernel printk * the init process using /dev/kmsg to call printk to show log * shell, which opens /dev/console and writes with sys_write() The shell goes into the normal UART open() and write() system calls, while the other two go into the console operations. The open() call invokes serial startup function (sci_startup), which will write to the SCSCR register (to enable or disable SCI interrupts) without any locking. This will conflict with the console serial function. Add spinlock protections in sci_startup() and sci_shutdown() properly. Signed-off-by: NShinya Kuribayashi <shinya.kuribayashi.px@renesas.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Shinya Kuribayashi 提交于
Symptom: When entering the suspend with Android logcat running, printk() call gets stuck and never returns. The issue can be observed at printk()s on nonboot CPUs when going to offline with their interrupts disabled, and never seen at boot CPU (core0 in our case). Details: serial_console_write() lacks of appropriate spinlock handling. In SMP systems, as long as sci_transmit_chars() is being processed at one CPU core, serial_console_write() can stuck at the other CPU core(s), when it tries to access to the same serial port _without_ a proper locking. serial_console_write() waits for the transmit FIFO getting empty, while sci_transmit_chars() writes data to the FIFO. In general, peripheral interrupts are routed to boot CPU (core0) by Linux ARM standard affinity settings. SCI(F) interrupts are handled by core0, so sci_transmit_chars() is processed on core0 as well. When logcat is running, it writes enormous log data to the kernel at every moment, forever. So core0 can repeatedly continue to process sci_transmit_chars() in its interrupt handler, which eventually makes the other CPU core(s) stuck at serial_console_write(). Looking at serial/8250.c, this is a known console write lockup issue with SMP kernels. Fix the sh-sci driver in the same way 8250.c does. Signed-off-by: NShinya Kuribayashi <shinya.kuribayashi.px@renesas.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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