talos-op-linux/arch/mips/loongson/common/Makefile, branch master

MIPS: Loongson: Naming style cleanup and rework

2015-06-21T19:53:59+00:00

Currently, code of Loongson-2/3 is under loongson directory and code of Loongson-1 is under loongson1 directory. Besides, there are Kconfig options such as MACH_LOONGSON and MACH_LOONGSON1. This naming style is very ugly and confusing. Since Loongson-2/3 are both 64-bit general- purpose CPU while Loongson-1 is 32-bit SoC, we rename both file names and Kconfig symbols from loongson/loongson1 to loongson64/loongson32. [ralf@linux-mips.org: Resolve a number of simple conflicts.] Signed-off-by: Huacai Chen Cc: Steven J. Hill Cc: linux-mips@linux-mips.org Cc: Fuxin Zhang Cc: Zhangjin Wu Cc: Kelvin Cheung Patchwork: https://patchwork.linux-mips.org/patch/9790/ Signed-off-by: Ralf Baechle

MIPS: Loongson: Do not register 8250 platform device from module.

2015-06-10T08:43:07+00:00

If CONFIG_SERIAL_8250 is set to m, the Loongson seria.ko module might get unloaded while the serial driver modules are still loaded resulting in stale references to the destroyed platform_device instance. Anyway, platform devices should always be registered indicated what devices are present, _not_ what drivers have been configured. Signed-off-by: Ralf Baechle Reported-by: Paul Gortmaker Patchwork: https://patchwork.linux-mips.org/patch/10538/

MIPS: Move Loongson GPIO driver to drivers/gpio

2015-04-07T09:15:56+00:00

Move Loongson-2's GPIO driver to drivers/gpio and add Kconfig options. Acked-by: Ralf Baechle Signed-off-by: Huacai Chen Reviewed-by: Alexandre Courbot Signed-off-by: Linus Walleij

MIPS: Loongson: Make platform serial setup always built-in.

2014-11-24T06:44:06+00:00

If SERIAL_8250 is compiled as a module, the platform specific setup for Loongson will be a module too, and it will not work very well. At least on Loongson 3 it will trigger a build failure, since loongson_sysconf is not exported to modules. Fix by making the platform specific serial code always built-in. Signed-off-by: Aaro Koskinen Reported-by: Ralf Baechle Cc: stable@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: Huacai Chen Cc: Markos Chandras Patchwork: https://patchwork.linux-mips.org/patch/8533/ Signed-off-by: Ralf Baechle

MIPS: Loongson: Add swiotlb to support All-Memory DMA

2014-03-31T16:17:12+00:00

Loongson doesn't support DMA address above 4GB traditionally. If memory is more than 4GB, CONFIG_SWIOTLB and ZONE_DMA32 should be selected. In this way, DMA pages are allocated below 4GB preferably. However, if low memory is not enough, high pages are allocated and swiotlb is used for bouncing. Moreover, we provide a platform-specific dma_map_ops::set_dma_mask() to set a device's dma_mask and coherent_dma_mask. We use these masks to distinguishes an allocated page can be used for DMA directly, or need swiotlb to bounce. Recently, we found that 32-bit DMA isn't a hardware bug, but a hardware configuration issue. So, latest firmware has enable the DMA support as high as 40-bit. To support all-memory DMA for all devices (besides the Loongson platform limit, there are still some devices have their own DMA32 limit), and also to be compatible with old firmware, we keep use swiotlb. Signed-off-by: Huacai Chen Signed-off-by: Hongliang Tao Signed-off-by: Hua Yan Tested-by: Alex Smith Reviewed-by: Alex Smith Cc: John Crispin Cc: Steven J. Hill Cc: Aurelien Jarno Cc: linux-mips@linux-mips.org Cc: Fuxin Zhang Cc: Zhangjin Wu Patchwork: https://patchwork.linux-mips.org/patch/6636 Signed-off-by: Ralf Baechle

MIPS: Loongson: Hide the pci code behind CONFIG_PCI

2013-09-03T13:27:39+00:00

The pci.c code depends on symbols which are only visible if CONFIG_PCI is selected. Also fixes the following problem on loongson allnoconfig: arch/mips/built-in.o: In function `pcibios_init': pci.c:(.init.text+0x528): undefined reference to `register_pci_controller' arch/mips/built-in.o:(.data+0xc): undefined reference to `loongson_pci_ops' Signed-off-by: Markos Chandras Acked-by: Steven J. Hill Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5584/ Signed-off-by: Ralf Baechle

mips: loongson: use GPIO driver on CONFIG_GPIOLIB

2013-03-20T13:48:13+00:00

The GPIO driver uses gpiolib, thus it should be compiled when CONFIG_GPIOLIB is defined and not only CONFIG_GENERIC_GPIO. Signed-off-by: Alexandre Courbot Acked-by: Arnd Bergmann Acked-by: Linus Walleij

MIPS: Loongson: Define rtc device on MC146818-equipped systems

2010-07-05T16:17:32+00:00

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 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

MIPS: Loongson 2F: Add gpio/gpioilb support

2010-05-21T20:31:16+00:00

Signed-off-by: Arnaud Patard To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1163/ Signed-off-by: Ralf Baechle

MIPS: Loongson: Cleanups of serial port support

2009-12-17T01:57:34+00:00

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 Cc: linux-mips@linux-mips.org http://patchwork.linux-mips.org/patch/727/ Signed-off-by: Ralf Baechle