Commit Graph

12 Commits

Author SHA1 Message Date
Yoichi Yuasa
efe8dc556c MIPS: Fix always CONFIG_LOONGSON_UART_BASE=y
Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org>
Cc: linux-mips <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/2055/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-03-14 21:07:26 +01:00
Thomas Gleixner
b78807158b MIPS: Kconfig cleanup
arch/mips/Kconfig already sets GENERIC_HARDIRQS_NO__DO_IRQ unconditionally.
Remove the redundant select from the Loongson Kconfig.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-10-29 19:08:26 +01:00
Arnaud Patard
5df7435287 MIPS: Loongson: Define rtc device on MC146818-equipped systems
This patch declare the rtc device present on systems with clock compatible
with the mc146818 and handled by rtc-cmos.  Introduce a new Kconfig entry
because there are some systems without rtc_cmos compatible clock.

Signed-off-by: Arnaud Patard <apatard@mandriva.com>
To: linux-mips@linux-mips.org
Cc: aba@not.so.argh.org
Patchwork: http://patchwork.linux-mips.org/patch/1320/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-07-05 17:17:32 +01:00
Wu Zhangjin
c3d8d85019 MIPS: Loongson: Cleanups of serial port support
This patchs uses a loongson_uart_base variable instead of the
uart_base[] array and adds a new kernel option to avoid to compile
uart_base.c all the time, which will save a little bit of memory for us.

Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
http://patchwork.linux-mips.org/patch/727/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-12-17 01:57:34 +00:00
Wu Zhangjin
f8ede0f700 MIPS: Loongson 2F: Add CPU frequency scaling support
Loongson 2F supports CPU clock scaling. When put it into wait mode by
setting the frequency as ZERO it will stay in this mode until an external
interrupt wakes the CPU again.

To enable clock scaling support, an external timer of a known stable rate
is required.

Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: cpufreq@vger.kernel.org,
Cc: Dave Jones <davej@redhat.com>,
Cc: Dominik Brodowski <linux@dominikbrodowski.net>,
Cc: yanh@lemote.com
Cc: huhb@lemote.com,
Patchwork: http://patchwork.linux-mips.org/patch/660/
Patchwork: http://patchwork.linux-mips.org/patch/751/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-12-17 01:57:20 +00:00
Wu Zhangjin
916daba8a9 MIPS: Lemote 2F: Add cs5536 MFGPT timer support
CPUFreq support for Loongson 2F requires an external timer.

Because the frequency of the MIPS Timer is related to the CPU frequency
which itself is variable another timer of constant frequency is required.

Export the mfgpt0 counter disable / enable operations for the coming
suspend support to suspend / resume the timer.

Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: cpufreq@vger.kernel.org,
Cc: Dave Jones <davej@redhat.com>,
Cc: Dominik Brodowski <linux@dominikbrodowski.net>,
Cc: yanh@lemote.com
Cc: huhb@lemote.com,
Patchwork: http://patchwork.linux-mips.org/patch/658/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-12-17 01:57:19 +00:00
Wu Zhangjin
f181bf60e3 MIPS: Loongson 2F: Add suspend support framework
This patch add basic suspend support for loongson2f family machines,
loongson2f have a specific feature: when we set it's frequency to ZERO,
it will go into a wait mode, and then can be waked up by the external
interrupt. so, if we setup suitable interrupts before putting it into
wait mode, we will be able wake it up whenever we want via sending the
relative interrupts to it.

These interrupts are board-specific, Yeeloong2F use the keyboard
interrupt and SCI interrupt, but LingLoong and Fuloong2F use the
interrupts connected to the processors directly. and BTW: some old
LingLoong and FuLoong2F have no such interrupts connected, so, there is
no way to wake them up from suspend mode. and therefore, please do not
enable the kernel support for them.

The board-specific support will be added in the coming patches.

Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: yanh@lemote.com
Cc: huhb@lemote.com
Cc: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: linux-pm@lists.linux-foundation.org
Patchwork: http://patchwork.linux-mips.org/patch/629/
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-12-17 01:57:16 +00:00
Wu Zhangjin
22c21003a9 MIPS: Lemote 2F: Add basic CS5536 VSM support
Lemote Loongson 2F family machines use CS5536 as their south bridge and need
these lowlevel interfaces to access the devices on CS5536.

Virtualize the legacy devices on CS5536 as PCI devices.  This way users can
access the CS5536 PCI config space directly as a normal multi-function
PCI 2.2 device.

Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: zhangfx@lemote.com
Cc: yanh@lemote.com 
Cc: huhb@lemote.com
Cc: Nicholas Mc Guire <hofrat@hofr.at>
Cc: Arnaud Patard <apatard@mandriva.com>
Cc: loongson-dev@googlegroups.com
Cc: linux-mips@linux-mips.org
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-12-17 01:57:12 +00:00
Wu Zhangjin
7d32c6dd81 MIPS: Lemote 2F: Add a LEMOTE_MACH2F kernel option
Add a new kernel option for Lemote Loongson 2F family machines.

Lemote loongson2f family machines utilize the 2f revision of loongson
processor and the AMD CS5536 south bridge.

Family members include Fuloong 2F mini PC, Yeeloong 2F notebook, LingLoong
all-in-one PC and others.

Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: zhangfx@lemote.com
Cc: yanh@lemote.com
Cc: huhb@lemote.com
Cc: Nicholas Mc Guire <hofrat@hofr.at>
Cc: Arnaud Patard <apatard@mandriva.com>
Cc: loongson-dev@googlegroups.com
Cc: linux-mips@linux-mips.org
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-12-17 01:57:11 +00:00
Wu Zhangjin
f6d4ff02c6 MIPS: Fuloong2e: Cleanup Kconfig
Changes indention from whitespace to tabs in arch/mips/loongson/Kconfig.

Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: Linux-MIPS <linux-mips@linux-mips.org>
Cc: yanh@lemote.com
Cc: huhb@lemote.com
Cc: Zhang Le <r0bertz@gentoo.org>
Cc: zhangfx@lemote.com
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-12-17 01:57:03 +00:00
Wu Zhangjin
3702bba5eb MIPS: Loongson: Add GCC 4.4 support for Loongson2E
Because only gcc >=4.4 have loongson-specific support, we need to choose
the suitable -march argument for gcc <= 4.3 and gcc >= 4.4, and here, we
use -march=loongson2e for loongson2e.

Thanks goes to Arnaud Patard <apatard@mandriva.com> for suggestion of
using cc-options(Documentation/kbuild/makefiles.txt). and thanks Zhang
Le for introducing the new CPU_LOONGSON2E kernel option.

NOTE: -mtune option is not need if -march and -mtune use the same value.

Signed-off-by: Zhang Le <r0bertz@gentoo.org>
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-17 20:07:47 +02:00
Wu Zhangjin
85749d24bc MIPS: Loongson: Split common loongson source code out
To share common loongson source code between all of the loongson-based
machines. there is a need to split it out of the fuloong-2e/ directory.
at the same time, other according tuning is needed. the machine-specific
parts are defined as macros in relative header file, pci.h, mem.h,
machine.h.

Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-17 20:07:47 +02:00