This patch adds device tree entry for MFC v6 in the Exynos5 SoC. Makes the required changes in the clock files and adds MFC to the DT device list.
Signed-off-by: Naveen Krishna Chatradhi <[email protected]> Signed-off-by: Arun Kumar K <[email protected]> --- .../devicetree/bindings/media/s5p-mfc.txt | 27 ++++++++++ arch/arm/boot/dts/exynos5250-smdk5250.dts | 7 +++ arch/arm/boot/dts/exynos5250.dtsi | 6 ++ arch/arm/mach-exynos/Kconfig | 1 + arch/arm/mach-exynos/clock-exynos5.c | 2 +- arch/arm/mach-exynos/mach-exynos5-dt.c | 55 ++++++++++++++++++++ 6 files changed, 97 insertions(+), 1 deletions(-) create mode 100644 Documentation/devicetree/bindings/media/s5p-mfc.txt diff --git a/Documentation/devicetree/bindings/media/s5p-mfc.txt b/Documentation/devicetree/bindings/media/s5p-mfc.txt new file mode 100644 index 0000000..f95e775 --- /dev/null +++ b/Documentation/devicetree/bindings/media/s5p-mfc.txt @@ -0,0 +1,27 @@ +* Samsung Multi Format Codec (MFC) + +Multi Format Codec (MFC) is the IP present in Samsung SoCs which +supports high resolution decoding and encoding functionalities. +The MFC device driver is a v4l2 driver which can encode/decode +video raw/elementary streams and has support for all popular +video codecs. + +Required properties: + - compatible : value should be either one among the following + (a) "samsung,mfc-v5" for MFC v5 present in Exynos4 SoCs + (b) "samsung,mfc-v6" for MFC v6 present in Exynos5 SoCs + + - reg : Physical base address of the IP registers and length of memory + mapped region. + + - interrupts : MFC interrupt number to the CPU. + + - samsung,mfc-r : Base address of the first memory bank used by MFC + for DMA contiguous memory allocation. + + - samsung,mfc-r-size : Size of the first memory bank. + + - samsung,mfc-l : Base address of the second memory bank used by MFC + for DMA contiguous memory allocation. + + - samsung,mfc-l-size : Size of the second memory bank. diff --git a/arch/arm/boot/dts/exynos5250-smdk5250.dts b/arch/arm/boot/dts/exynos5250-smdk5250.dts index 8a5e348..5824c97 100644 --- a/arch/arm/boot/dts/exynos5250-smdk5250.dts +++ b/arch/arm/boot/dts/exynos5250-smdk5250.dts @@ -109,4 +109,11 @@ spi_2: spi@12d40000 { status = "disabled"; }; + + mfc { + samsung,mfc-r = <0x43000000>; + samsung,mfc-r-size = <8388608>; + samsung,mfc-l = <0x51000000>; + samsung,mfc-l-size = <8388608>; + }; }; diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi index b55794b..5df2f99 100644 --- a/arch/arm/boot/dts/exynos5250.dtsi +++ b/arch/arm/boot/dts/exynos5250.dtsi @@ -62,6 +62,12 @@ interrupts = <0 42 0>; }; + mfc { + compatible = "samsung,mfc-v6"; + reg = <0x11000000 0x10000>; + interrupts = <0 96 0>; + }; + rtc { compatible = "samsung,s3c6410-rtc"; reg = <0x101E0000 0x100>; diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig index 195b50e..8ddc26a 100644 --- a/arch/arm/mach-exynos/Kconfig +++ b/arch/arm/mach-exynos/Kconfig @@ -64,6 +64,7 @@ config SOC_EXYNOS5250 select SAMSUNG_DMADEV select S5P_PM if PM select S5P_SLEEP if PM + select S5P_DEV_MFC help Enable EXYNOS5250 SoC support diff --git a/arch/arm/mach-exynos/clock-exynos5.c b/arch/arm/mach-exynos/clock-exynos5.c index eb3f4fc..461a721 100644 --- a/arch/arm/mach-exynos/clock-exynos5.c +++ b/arch/arm/mach-exynos/clock-exynos5.c @@ -669,7 +669,7 @@ static struct clk exynos5_init_clocks_off[] = { .ctrlbit = (1 << 25), }, { .name = "mfc", - .devname = "s5p-mfc", + .devname = "s5p-mfc-v6", .enable = exynos5_clk_ip_mfc_ctrl, .ctrlbit = (1 << 0), }, { diff --git a/arch/arm/mach-exynos/mach-exynos5-dt.c b/arch/arm/mach-exynos/mach-exynos5-dt.c index e707eb1..243ba63 100644 --- a/arch/arm/mach-exynos/mach-exynos5-dt.c +++ b/arch/arm/mach-exynos/mach-exynos5-dt.c @@ -11,6 +11,8 @@ #include <linux/of_platform.h> #include <linux/serial_core.h> +#include <linux/memblock.h> +#include <linux/of_fdt.h> #include <asm/mach/arch.h> #include <asm/hardware/gic.h> @@ -18,6 +20,7 @@ #include <plat/cpu.h> #include <plat/regs-serial.h> +#include <plat/mfc.h> #include "common.h" @@ -64,6 +67,7 @@ static const struct of_dev_auxdata exynos5250_auxdata_lookup[] __initconst = { "exynos-gsc.2", NULL), OF_DEV_AUXDATA("samsung,exynos5-gsc", EXYNOS5_PA_GSC3, "exynos-gsc.3", NULL), + OF_DEV_AUXDATA("samsung,mfc-v6", 0x11000000, "s5p-mfc-v6", NULL), {}, }; @@ -84,6 +88,56 @@ static char const *exynos5250_dt_compat[] __initdata = { NULL }; +struct mfc_dt_meminfo { + unsigned long loff; + unsigned long lsize; + unsigned long roff; + unsigned long rsize; +}; + +int fdt_find_mfc_mem(unsigned long node, const char *uname, int depth, + void *data) +{ + __be32 *prop; + unsigned long len; + struct mfc_dt_meminfo *mfc_mem = data; + + if (!of_flat_dt_is_compatible(node, "samsung,mfc-v6")) + return 0; + + prop = of_get_flat_dt_prop(node, "samsung,mfc-l", &len); + if (!prop) + return 0; + mfc_mem->loff = of_read_ulong(prop, len/4); + + prop = of_get_flat_dt_prop(node, "samsung,mfc-l-size", &len); + if (!prop) + return 0; + mfc_mem->lsize = of_read_ulong(prop, len/4); + + prop = of_get_flat_dt_prop(node, "samsung,mfc-r", &len); + if (!prop) + return 0; + mfc_mem->roff = of_read_ulong(prop, len/4); + + prop = of_get_flat_dt_prop(node, "samsung,mfc-r-size", &len); + if (!prop) + return 0; + mfc_mem->rsize = of_read_ulong(prop, len/4); + + return 1; +} + +static void __init exynos5_reserve(void) +{ + struct mfc_dt_meminfo mfc_mem; + + /* Reserve memory for MFC only if it's available */ + if (of_scan_flat_dt(fdt_find_mfc_mem, &mfc_mem)) + s5p_mfc_reserve_mem(mfc_mem.roff, mfc_mem.rsize, mfc_mem.loff, + mfc_mem.lsize); +} + DT_MACHINE_START(EXYNOS5_DT, "SAMSUNG EXYNOS5 (Flattened Device Tree)") /* Maintainer: Kukjin Kim <[email protected]> */ .init_irq = exynos5_init_irq, @@ -94,4 +148,5 @@ DT_MACHINE_START(EXYNOS5_DT, "SAMSUNG EXYNOS5 (Flattened Device Tree)") .timer = &exynos4_timer, .dt_compat = exynos5250_dt_compat, .restart = exynos5_restart, + .reserve = exynos5_reserve, MACHINE_END -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
