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# Allwinner CedarX Driver for Mainline Linux 5.4
### 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.
## Userspace library
https://github.com/aodzip/libcedarc
|
