Allwinner CedarX Driver for Mainline Linux 5.4
July 19, 2020 ยท View on GitHub
VideoEngine driver based on Allwinner H6 Homlet BSP
Ion driver based on Google Android Ion
Install
Put all file in "drivers/staging/media/sunxi/cedar"
Add source to "drivers/staging/media/sunxi/Kconfig"
source "drivers/staging/media/sunxi/cedar/Kconfig"
Demo
# SPDX-License-Identifier: GPL-2.0
config VIDEO_SUNXI
bool "Allwinner sunXi family Video Devices"
depends on ARCH_SUNXI || COMPILE_TEST
help
If you have an Allwinner SoC based on the sunXi family, say Y.
Note that this option doesn't include new drivers in the
kernel: saying N will just cause Kconfig to skip all the
questions about Allwinner media devices.
if VIDEO_SUNXI
source "drivers/staging/media/sunxi/cedrus/Kconfig"
source "drivers/staging/media/sunxi/cedar/Kconfig"
endif
Add obj to "drivers/staging/media/sunxi/Makefile"
obj-y += cedar/
Demo
# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_VIDEO_SUNXI_CEDRUS) += cedrus/
obj-y += cedar/
DeviceTree
Demo for Allwinner V3 / V3s / S3L / S3
syscon: syscon@1c00000 {
compatible = "allwinner,sun8i-v3s-system-controller", "allwinner,sun8i-h3-system-control", "syscon";
reg = <0x01c00000 0xd0>;
#address-cells = <1>;
#size-cells = <1>;
ranges;
sram_c: sram@1d00000 {
compatible = "mmio-sram";
reg = <0x01d00000 0x80000>;
#address-cells = <1>;
#size-cells = <1>;
ranges = <0 0x01d00000 0x80000>;
ve_sram: sram-section@0 {
compatible = "allwinner,sun8i-v3s-sram-c", "allwinner,sun4i-a10-sram-c1";
reg = <0x000000 0x80000>;
};
};
};
cedarx: video-codec@1c0e000 {
compatible = "allwinner,sun8i-v3-cedar";
reg = <0x01c0e000 0x1000>;
clocks = <&ccu CLK_BUS_VE>, <&ccu CLK_VE>, <&ccu CLK_DRAM_VE>;
clock-names = "ahb", "mod", "ram";
resets = <&ccu RST_BUS_VE>;
interrupts = <GIC_SPI 58 IRQ_TYPE_LEVEL_HIGH>;
allwinner,sram = <&ve_sram 1>;
status = "disabled";
};
ion: ion {
compatible = "allwinner,sunxi-ion";
status = "disabled";
heap_cma@0{
compatible = "allwinner,cma";
heap-name = "cma";
heap-id = <0x4>;
heap-base = <0x0>;
heap-size = <0x0>;
heap-type = "ion_cma";
};
};
Demo for Allwinner F1C100s / F1C200s
In drivers/clk/sunxi-ng/ccu-suniv-f1c100s.c
Change
static SUNXI_CCU_GATE(ve_clk, "ve", "pll-audio", 0x13c, BIT(31), 0);
To
static SUNXI_CCU_GATE(ve_clk, "ve", "pll-ve", 0x13c, BIT(31), 0);
sram-controller@1c00000 {
compatible = "allwinner,suniv-f1c100s-system-control",
"allwinner,sun4i-a10-system-control";
reg = <0x01c00000 0x30>;
#address-cells = <1>;
#size-cells = <1>;
ranges;
sram_c: sram@1d00000 {
compatible = "mmio-sram";
reg = <0x01d00000 0x80000>;
#address-cells = <1>;
#size-cells = <1>;
ranges = <0 0x01d00000 0x80000>;
ve_sram: sram-section@0 {
compatible = "allwinner,suniv-f1c100s-sram-c", "allwinner,sun4i-a10-sram-c1";
reg = <0x000000 0x80000>;
};
};
};
cedarx: video-codec@1c0e000 {
compatible = "allwinner,suniv-f1c100s-cedar";
reg = <0x01c0e000 0x1000>;
clocks = <&ccu CLK_BUS_VE>, <&ccu CLK_VE>, <&ccu CLK_DRAM_VE>;
clock-names = "ahb", "mod", "ram";
resets = <&ccu RST_BUS_VE>;
interrupts = <34>;
allwinner,sram = <&ve_sram 1>;
status = "disabled";
};
ion: ion {
compatible = "allwinner,sunxi-ion";
status = "disabled";
heap_cma@0{
compatible = "allwinner,cma";
heap-name = "cma";
heap-id = <0x4>;
heap-base = <0x0>;
heap-size = <0x0>;
heap-type = "ion_cma";
};
};
Compile
Enable Driver in
> Device Drivers > Staging drivers > Media staging drivers
[*] Allwinner sunXi family Video Devices
<*> Allwinner CedarX Video Engine Driver
<*> Allwinner CedarX Ion Driver
Config "DMA Contiguous Memory Allocator"
> Library routines
-*- DMA Contiguous Memory Allocator
*** Default contiguous memory area size: ***
(32) Size in Mega Bytes
Selected region size (Use mega bytes value only) --->
... and here we go.
Debug
ION_IOC_ALLOC error / memory alloc fail
Increase
CMA_AREAS
CMA_SIZE_MBYTES
Default
Report in issue.