Both SPEAr3xx and SPEAr6xx families have one instance of ARM PL080 DMA controller. This patch adds in support for that.
Signed-off-by: Viresh Kumar <[email protected]> --- arch/arm/boot/dts/spear300-evb.dts | 4 + arch/arm/boot/dts/spear310-evb.dts | 4 + arch/arm/boot/dts/spear320-evb.dts | 4 + arch/arm/boot/dts/spear3xx.dtsi | 8 + arch/arm/boot/dts/spear600-evb.dts | 4 + arch/arm/boot/dts/spear600.dtsi | 8 + arch/arm/mach-spear3xx/clock.c | 2 +- arch/arm/mach-spear3xx/include/mach/generic.h | 2 + arch/arm/mach-spear3xx/spear300.c | 190 +++++++++++++ arch/arm/mach-spear3xx/spear310.c | 190 +++++++++++++ arch/arm/mach-spear3xx/spear320.c | 190 +++++++++++++ arch/arm/mach-spear3xx/spear3xx.c | 21 ++ arch/arm/mach-spear6xx/clock.c | 2 +- arch/arm/mach-spear6xx/spear6xx.c | 372 ++++++++++++++++++++++++- arch/arm/plat-spear/Makefile | 2 +- arch/arm/plat-spear/include/plat/pl080.h | 21 ++ arch/arm/plat-spear/pl080.c | 79 ++++++ 17 files changed, 1099 insertions(+), 4 deletions(-) create mode 100644 arch/arm/plat-spear/include/plat/pl080.h create mode 100644 arch/arm/plat-spear/pl080.c diff --git a/arch/arm/boot/dts/spear300-evb.dts b/arch/arm/boot/dts/spear300-evb.dts index be3df48..4764ba3 100644 --- a/arch/arm/boot/dts/spear300-evb.dts +++ b/arch/arm/boot/dts/spear300-evb.dts @@ -29,6 +29,10 @@ status = "okay"; }; + dma@fc400000 { + status = "okay"; + }; + fsmc: flash@94000000 { status = "okay"; }; diff --git a/arch/arm/boot/dts/spear310-evb.dts b/arch/arm/boot/dts/spear310-evb.dts index 1e14bf3..e46496f 100644 --- a/arch/arm/boot/dts/spear310-evb.dts +++ b/arch/arm/boot/dts/spear310-evb.dts @@ -25,6 +25,10 @@ }; ahb { + dma@fc400000 { + status = "okay"; + }; + fsmc: flash@44000000 { status = "okay"; }; diff --git a/arch/arm/boot/dts/spear320-evb.dts b/arch/arm/boot/dts/spear320-evb.dts index 7dea99c..ca72645 100644 --- a/arch/arm/boot/dts/spear320-evb.dts +++ b/arch/arm/boot/dts/spear320-evb.dts @@ -29,6 +29,10 @@ status = "okay"; }; + dma@fc400000 { + status = "okay"; + }; + fsmc: flash@4c000000 { status = "okay"; }; diff --git a/arch/arm/boot/dts/spear3xx.dtsi b/arch/arm/boot/dts/spear3xx.dtsi index 1a85ff2..dc85461 100644 --- a/arch/arm/boot/dts/spear3xx.dtsi +++ b/arch/arm/boot/dts/spear3xx.dtsi @@ -38,6 +38,14 @@ #interrupt-cells = <1>; }; + dma@fc400000 { + compatible = "arm,pl080", "arm,primecell"; + reg = <0xfc400000 0x1000>; + interrupt-parent = <&vic>; + interrupts = <8>; + status = "disabled"; + }; + gmac: eth@e0800000 { compatible = "st,spear600-gmac"; reg = <0xe0800000 0x8000>; diff --git a/arch/arm/boot/dts/spear600-evb.dts b/arch/arm/boot/dts/spear600-evb.dts index 636292e..790a7a8 100644 --- a/arch/arm/boot/dts/spear600-evb.dts +++ b/arch/arm/boot/dts/spear600-evb.dts @@ -24,6 +24,10 @@ }; ahb { + dma@fc400000 { + status = "okay"; + }; + gmac: ethernet@e0800000 { phy-mode = "gmii"; status = "okay"; diff --git a/arch/arm/boot/dts/spear600.dtsi b/arch/arm/boot/dts/spear600.dtsi index ebe0885..d777e3a 100644 --- a/arch/arm/boot/dts/spear600.dtsi +++ b/arch/arm/boot/dts/spear600.dtsi @@ -45,6 +45,14 @@ #interrupt-cells = <1>; }; + dma@fc400000 { + compatible = "arm,pl080", "arm,primecell"; + reg = <0xfc400000 0x1000>; + interrupt-parent = <&vic1>; + interrupts = <10>; + status = "disabled"; + }; + gmac: ethernet@e0800000 { compatible = "st,spear600-gmac"; reg = <0xe0800000 0x8000>; diff --git a/arch/arm/mach-spear3xx/clock.c b/arch/arm/mach-spear3xx/clock.c index 1e2ddd0..d073133 100644 --- a/arch/arm/mach-spear3xx/clock.c +++ b/arch/arm/mach-spear3xx/clock.c @@ -683,7 +683,7 @@ static struct clk_lookup spear_clk_lookups[] = { /* clock derived from ahb clk */ CLKDEV_INIT(NULL, "apb_clk", &apb_clk), CLKDEV_INIT("d0180000.i2c", NULL, &i2c_clk), - CLKDEV_INIT("dma", NULL, &dma_clk), + CLKDEV_INIT("fc400000.dma", NULL, &dma_clk), CLKDEV_INIT("jpeg", NULL, &jpeg_clk), CLKDEV_INIT("e080000.eth", NULL, &gmac_clk), CLKDEV_INIT("fc000000.flash", NULL, &smi_clk), diff --git a/arch/arm/mach-spear3xx/include/mach/generic.h b/arch/arm/mach-spear3xx/include/mach/generic.h index 3469377..882b074 100644 --- a/arch/arm/mach-spear3xx/include/mach/generic.h +++ b/arch/arm/mach-spear3xx/include/mach/generic.h @@ -14,6 +14,7 @@ #ifndef __MACH_GENERIC_H #define __MACH_GENERIC_H +#include <linux/amba/pl08x.h> #include <linux/init.h> #include <linux/of_platform.h> #include <linux/platform_device.h> @@ -33,6 +34,7 @@ /* Add spear3xx family device structure declarations here */ extern struct sys_timer spear3xx_timer; +extern struct pl08x_platform_data pl080_plat_data; /* Add spear3xx family function declarations here */ void __init spear3xx_clk_init(void); diff --git a/arch/arm/mach-spear3xx/spear300.c b/arch/arm/mach-spear3xx/spear300.c index 4d0f6c7..3a6e888 100644 --- a/arch/arm/mach-spear3xx/spear300.c +++ b/arch/arm/mach-spear3xx/spear300.c @@ -19,6 +19,7 @@ #include <linux/of_platform.h> #include <linux/types.h> #include <linux/amba/pl061.h> +#include <linux/amba/pl08x.h> #include <linux/ptrace.h> #include <asm/irq.h> #include <plat/shirq.h> @@ -429,6 +430,193 @@ static struct spear_shirq shirq_ras1 = { }, }; +/* DMAC platform data's slave info */ +struct pl08x_channel_data spear300_dma_info[] = { + { + .bus_id = "uart0_rx", + .min_signal = 2, + .max_signal = 2, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "uart0_tx", + .min_signal = 3, + .max_signal = 3, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ssp0_rx", + .min_signal = 8, + .max_signal = 8, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ssp0_tx", + .min_signal = 9, + .max_signal = 9, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "i2c_rx", + .min_signal = 10, + .max_signal = 10, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "i2c_tx", + .min_signal = 11, + .max_signal = 11, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "irda", + .min_signal = 12, + .max_signal = 12, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "adc", + .min_signal = 13, + .max_signal = 13, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "to_jpeg", + .min_signal = 14, + .max_signal = 14, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "from_jpeg", + .min_signal = 15, + .max_signal = 15, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras0_rx", + .min_signal = 0, + .max_signal = 0, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras0_tx", + .min_signal = 1, + .max_signal = 1, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras1_rx", + .min_signal = 2, + .max_signal = 2, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras1_tx", + .min_signal = 3, + .max_signal = 3, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras2_rx", + .min_signal = 4, + .max_signal = 4, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras2_tx", + .min_signal = 5, + .max_signal = 5, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras3_rx", + .min_signal = 6, + .max_signal = 6, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras3_tx", + .min_signal = 7, + .max_signal = 7, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras4_rx", + .min_signal = 8, + .max_signal = 8, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras4_tx", + .min_signal = 9, + .max_signal = 9, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras5_rx", + .min_signal = 10, + .max_signal = 10, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras5_tx", + .min_signal = 11, + .max_signal = 11, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras6_rx", + .min_signal = 12, + .max_signal = 12, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras6_tx", + .min_signal = 13, + .max_signal = 13, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras7_rx", + .min_signal = 14, + .max_signal = 14, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras7_tx", + .min_signal = 15, + .max_signal = 15, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, +}; + static struct pl061_platform_data pl061_plat_data = { .gpio_base = 8, .irq_base = SPEAR300_GPIO1_INT_BASE, @@ -461,6 +649,8 @@ int __init spear300_init(void) { int ret = 0; + pl080_plat_data.slave_channels = spear300_dma_info; + pl080_plat_data.num_slave_channels = ARRAY_SIZE(spear300_dma_info); /* shared irq registration */ shirq_ras1.regs.base = ioremap(SPEAR300_TELECOM_BASE, SZ_4K); diff --git a/arch/arm/mach-spear3xx/spear310.c b/arch/arm/mach-spear3xx/spear310.c index 90156bf..e2d8021 100644 --- a/arch/arm/mach-spear3xx/spear310.c +++ b/arch/arm/mach-spear3xx/spear310.c @@ -13,6 +13,7 @@ #define pr_fmt(fmt) "SPEAr310: " fmt +#include <linux/amba/pl08x.h> #include <linux/amba/serial.h> #include <linux/of.h> #include <linux/of_address.h> @@ -262,6 +263,193 @@ static struct spear_shirq shirq_intrcomm_ras = { }, }; +/* DMAC platform data's slave info */ +struct pl08x_channel_data spear310_dma_info[] = { + { + .bus_id = "uart0_rx", + .min_signal = 2, + .max_signal = 2, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "uart0_tx", + .min_signal = 3, + .max_signal = 3, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ssp0_rx", + .min_signal = 8, + .max_signal = 8, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ssp0_tx", + .min_signal = 9, + .max_signal = 9, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "i2c_rx", + .min_signal = 10, + .max_signal = 10, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "i2c_tx", + .min_signal = 11, + .max_signal = 11, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "irda", + .min_signal = 12, + .max_signal = 12, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "adc", + .min_signal = 13, + .max_signal = 13, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "to_jpeg", + .min_signal = 14, + .max_signal = 14, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "from_jpeg", + .min_signal = 15, + .max_signal = 15, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras0_rx", + .min_signal = 0, + .max_signal = 0, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras0_tx", + .min_signal = 1, + .max_signal = 1, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras1_rx", + .min_signal = 2, + .max_signal = 2, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras1_tx", + .min_signal = 3, + .max_signal = 3, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras2_rx", + .min_signal = 4, + .max_signal = 4, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras2_tx", + .min_signal = 5, + .max_signal = 5, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras3_rx", + .min_signal = 6, + .max_signal = 6, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras3_tx", + .min_signal = 7, + .max_signal = 7, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras4_rx", + .min_signal = 8, + .max_signal = 8, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras4_tx", + .min_signal = 9, + .max_signal = 9, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras5_rx", + .min_signal = 10, + .max_signal = 10, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras5_tx", + .min_signal = 11, + .max_signal = 11, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras6_rx", + .min_signal = 12, + .max_signal = 12, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras6_tx", + .min_signal = 13, + .max_signal = 13, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras7_rx", + .min_signal = 14, + .max_signal = 14, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras7_tx", + .min_signal = 15, + .max_signal = 15, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, +}; + /* uart devices plat data */ static struct amba_pl011_data uart_data[] = { { @@ -327,6 +515,8 @@ int __init spear310_init(void) void __iomem *base; int ret = 0; + pl080_plat_data.slave_channels = spear310_dma_info; + pl080_plat_data.num_slave_channels = ARRAY_SIZE(spear310_dma_info); /* shared irq registration */ base = ioremap(SPEAR310_SOC_CONFIG_BASE, SZ_4K); diff --git a/arch/arm/mach-spear3xx/spear320.c b/arch/arm/mach-spear3xx/spear320.c index 582d1af..3668ea9 100644 --- a/arch/arm/mach-spear3xx/spear320.c +++ b/arch/arm/mach-spear3xx/spear320.c @@ -14,6 +14,7 @@ #define pr_fmt(fmt) "SPEAr320: " fmt #include <linux/amba/pl022.h> +#include <linux/amba/pl08x.h> #include <linux/amba/serial.h> #include <linux/of.h> #include <linux/of_address.h> @@ -516,6 +517,193 @@ static struct spear_shirq shirq_intrcomm_ras = { }, }; +/* DMAC platform data's slave info */ +struct pl08x_channel_data spear320_dma_info[] = { + { + .bus_id = "uart0_rx", + .min_signal = 2, + .max_signal = 2, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "uart0_tx", + .min_signal = 3, + .max_signal = 3, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ssp0_rx", + .min_signal = 8, + .max_signal = 8, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ssp0_tx", + .min_signal = 9, + .max_signal = 9, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "i2c0_rx", + .min_signal = 10, + .max_signal = 10, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "i2c0_tx", + .min_signal = 11, + .max_signal = 11, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "irda", + .min_signal = 12, + .max_signal = 12, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "adc", + .min_signal = 13, + .max_signal = 13, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "to_jpeg", + .min_signal = 14, + .max_signal = 14, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "from_jpeg", + .min_signal = 15, + .max_signal = 15, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ssp1_rx", + .min_signal = 0, + .max_signal = 0, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "ssp1_tx", + .min_signal = 1, + .max_signal = 1, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "ssp2_rx", + .min_signal = 2, + .max_signal = 2, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "ssp2_tx", + .min_signal = 3, + .max_signal = 3, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "uart1_rx", + .min_signal = 4, + .max_signal = 4, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "uart1_tx", + .min_signal = 5, + .max_signal = 5, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "uart2_rx", + .min_signal = 6, + .max_signal = 6, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "uart2_tx", + .min_signal = 7, + .max_signal = 7, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "i2c1_rx", + .min_signal = 8, + .max_signal = 8, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "i2c1_tx", + .min_signal = 9, + .max_signal = 9, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "i2c2_rx", + .min_signal = 10, + .max_signal = 10, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "i2c2_tx", + .min_signal = 11, + .max_signal = 11, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "i2s_rx", + .min_signal = 12, + .max_signal = 12, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "i2s_tx", + .min_signal = 13, + .max_signal = 13, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "rs485_rx", + .min_signal = 14, + .max_signal = 14, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "rs485_tx", + .min_signal = 15, + .max_signal = 15, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, +}; + static struct pl022_ssp_controller ssp_data[] = { { .bus_id = 1, @@ -582,6 +770,8 @@ int __init spear320_init(void) void __iomem *base; int ret = 0; + pl080_plat_data.slave_channels = spear320_dma_info; + pl080_plat_data.num_slave_channels = ARRAY_SIZE(spear320_dma_info); /* shared irq registration */ base = ioremap(SPEAR320_SOC_CONFIG_BASE, SZ_4K); diff --git a/arch/arm/mach-spear3xx/spear3xx.c b/arch/arm/mach-spear3xx/spear3xx.c index a2bfb86..90cd9fb 100644 --- a/arch/arm/mach-spear3xx/spear3xx.c +++ b/arch/arm/mach-spear3xx/spear3xx.c @@ -15,6 +15,7 @@ #include <linux/amba/pl022.h> #include <linux/amba/pl061.h> +#include <linux/amba/pl08x.h> #include <linux/of.h> #include <linux/of_address.h> #include <linux/of_irq.h> @@ -22,9 +23,11 @@ #include <linux/types.h> #include <linux/ptrace.h> #include <linux/io.h> +#include <asm/hardware/pl080.h> #include <asm/hardware/vic.h> #include <asm/irq.h> #include <asm/mach/arch.h> +#include <plat/pl080.h> #include <mach/generic.h> #include <mach/hardware.h> @@ -53,6 +56,22 @@ static struct pl061_platform_data pl061_plat_data = { .irq_base = SPEAR3XX_GPIO_INT_BASE, }; +/* dmac device registration */ +struct pl08x_platform_data pl080_plat_data = { + .memcpy_channel = { + .bus_id = "memcpy", + .cctl = (PL080_BSIZE_16 << PL080_CONTROL_SB_SIZE_SHIFT | \ + PL080_BSIZE_16 << PL080_CONTROL_DB_SIZE_SHIFT | \ + PL080_WIDTH_32BIT << PL080_CONTROL_SWIDTH_SHIFT | \ + PL080_WIDTH_32BIT << PL080_CONTROL_DWIDTH_SHIFT | \ + PL080_CONTROL_PROT_BUFF | PL080_CONTROL_PROT_CACHE | \ + PL080_CONTROL_PROT_SYS), + }, + .lli_buses = PL08X_AHB1, + .mem_buses = PL08X_AHB1, + .get_signal = pl080_get_signal, + .put_signal = pl080_put_signal, +}; /* Add auxdata to pass platform data */ struct of_dev_auxdata spear3xx_auxdata_lookup[] __initdata = { @@ -60,6 +79,8 @@ struct of_dev_auxdata spear3xx_auxdata_lookup[] __initdata = { &pl022_plat_data), OF_DEV_AUXDATA("arm,pl061", SPEAR3XX_ICM3_GPIO_BASE, NULL, &pl061_plat_data), + OF_DEV_AUXDATA("arm,pl080", SPEAR3XX_ICM3_DMA_BASE, NULL, + &pl080_plat_data), {} }; diff --git a/arch/arm/mach-spear6xx/clock.c b/arch/arm/mach-spear6xx/clock.c index 5a46980..adadef2 100644 --- a/arch/arm/mach-spear6xx/clock.c +++ b/arch/arm/mach-spear6xx/clock.c @@ -657,7 +657,7 @@ static struct clk_lookup spear_clk_lookups[] = { /* clock derived from ahb clk */ CLKDEV_INIT(NULL, "apb_clk", &apb_clk), CLKDEV_INIT("d0200000.i2c", NULL, &i2c_clk), - CLKDEV_INIT("dma", NULL, &dma_clk), + CLKDEV_INIT("fc400000.dma", NULL, &dma_clk), CLKDEV_INIT("jpeg", NULL, &jpeg_clk), CLKDEV_INIT("gmac", NULL, &gmac_clk), CLKDEV_INIT("fc000000.flash", NULL, &smi_clk), diff --git a/arch/arm/mach-spear6xx/spear6xx.c b/arch/arm/mach-spear6xx/spear6xx.c index d436118..8bbbee3 100644 --- a/arch/arm/mach-spear6xx/spear6xx.c +++ b/arch/arm/mach-spear6xx/spear6xx.c @@ -13,15 +13,377 @@ * warranty of any kind, whether express or implied. */ +#include <linux/amba/pl08x.h> #include <linux/of.h> #include <linux/of_address.h> #include <linux/of_irq.h> #include <linux/of_platform.h> +#include <asm/hardware/pl080.h> #include <asm/hardware/vic.h> #include <asm/mach/arch.h> +#include <plat/pl080.h> #include <mach/generic.h> #include <mach/hardware.h> +/* dmac device registration */ +static struct pl08x_channel_data spear600_dma_info[] = { + { + .bus_id = "ssp1_rx", + .min_signal = 0, + .max_signal = 0, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ssp1_tx", + .min_signal = 1, + .max_signal = 1, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "uart0_rx", + .min_signal = 2, + .max_signal = 2, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "uart0_tx", + .min_signal = 3, + .max_signal = 3, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "uart1_rx", + .min_signal = 4, + .max_signal = 4, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "uart1_tx", + .min_signal = 5, + .max_signal = 5, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ssp2_rx", + .min_signal = 6, + .max_signal = 6, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "ssp2_tx", + .min_signal = 7, + .max_signal = 7, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "ssp0_rx", + .min_signal = 8, + .max_signal = 8, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ssp0_tx", + .min_signal = 9, + .max_signal = 9, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "i2c_rx", + .min_signal = 10, + .max_signal = 10, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "i2c_tx", + .min_signal = 11, + .max_signal = 11, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "irda", + .min_signal = 12, + .max_signal = 12, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "adc", + .min_signal = 13, + .max_signal = 13, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "to_jpeg", + .min_signal = 14, + .max_signal = 14, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "from_jpeg", + .min_signal = 15, + .max_signal = 15, + .muxval = 0, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras0_rx", + .min_signal = 0, + .max_signal = 0, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras0_tx", + .min_signal = 1, + .max_signal = 1, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras1_rx", + .min_signal = 2, + .max_signal = 2, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras1_tx", + .min_signal = 3, + .max_signal = 3, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras2_rx", + .min_signal = 4, + .max_signal = 4, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras2_tx", + .min_signal = 5, + .max_signal = 5, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras3_rx", + .min_signal = 6, + .max_signal = 6, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras3_tx", + .min_signal = 7, + .max_signal = 7, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras4_rx", + .min_signal = 8, + .max_signal = 8, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras4_tx", + .min_signal = 9, + .max_signal = 9, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras5_rx", + .min_signal = 10, + .max_signal = 10, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras5_tx", + .min_signal = 11, + .max_signal = 11, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras6_rx", + .min_signal = 12, + .max_signal = 12, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras6_tx", + .min_signal = 13, + .max_signal = 13, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras7_rx", + .min_signal = 14, + .max_signal = 14, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras7_tx", + .min_signal = 15, + .max_signal = 15, + .muxval = 1, + .cctl = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ext0_rx", + .min_signal = 0, + .max_signal = 0, + .muxval = 2, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "ext0_tx", + .min_signal = 1, + .max_signal = 1, + .muxval = 2, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "ext1_rx", + .min_signal = 2, + .max_signal = 2, + .muxval = 2, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "ext1_tx", + .min_signal = 3, + .max_signal = 3, + .muxval = 2, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "ext2_rx", + .min_signal = 4, + .max_signal = 4, + .muxval = 2, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "ext2_tx", + .min_signal = 5, + .max_signal = 5, + .muxval = 2, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "ext3_rx", + .min_signal = 6, + .max_signal = 6, + .muxval = 2, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "ext3_tx", + .min_signal = 7, + .max_signal = 7, + .muxval = 2, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "ext4_rx", + .min_signal = 8, + .max_signal = 8, + .muxval = 2, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "ext4_tx", + .min_signal = 9, + .max_signal = 9, + .muxval = 2, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "ext5_rx", + .min_signal = 10, + .max_signal = 10, + .muxval = 2, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "ext5_tx", + .min_signal = 11, + .max_signal = 11, + .muxval = 2, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "ext6_rx", + .min_signal = 12, + .max_signal = 12, + .muxval = 2, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "ext6_tx", + .min_signal = 13, + .max_signal = 13, + .muxval = 2, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "ext7_rx", + .min_signal = 14, + .max_signal = 14, + .muxval = 2, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, { + .bus_id = "ext7_tx", + .min_signal = 15, + .max_signal = 15, + .muxval = 2, + .cctl = 0, + .periph_buses = PL08X_AHB2, + }, +}; + +struct pl08x_platform_data pl080_plat_data = { + .memcpy_channel = { + .bus_id = "memcpy", + .cctl = (PL080_BSIZE_16 << PL080_CONTROL_SB_SIZE_SHIFT | \ + PL080_BSIZE_16 << PL080_CONTROL_DB_SIZE_SHIFT | \ + PL080_WIDTH_32BIT << PL080_CONTROL_SWIDTH_SHIFT | \ + PL080_WIDTH_32BIT << PL080_CONTROL_DWIDTH_SHIFT | \ + PL080_CONTROL_PROT_BUFF | PL080_CONTROL_PROT_CACHE | \ + PL080_CONTROL_PROT_SYS), + }, + .lli_buses = PL08X_AHB1, + .mem_buses = PL08X_AHB1, + .get_signal = pl080_get_signal, + .put_signal = pl080_put_signal, + .slave_channels = spear600_dma_info, + .num_slave_channels = ARRAY_SIZE(spear600_dma_info), +}; + /* Following will create static virtual/physical mappings */ static struct map_desc spear6xx_io_desc[] __initdata = { { @@ -92,9 +454,17 @@ struct sys_timer spear6xx_timer = { .init = spear6xx_timer_init, }; +/* Add auxdata to pass platform data */ +struct of_dev_auxdata spear6xx_auxdata_lookup[] __initdata = { + OF_DEV_AUXDATA("arm,pl080", SPEAR6XX_ICM3_DMA_BASE, NULL, + &pl080_plat_data), + {} +}; + static void __init spear600_dt_init(void) { - of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); + of_platform_populate(NULL, of_default_bus_match_table, + spear6xx_auxdata_lookup, NULL); } static const char *spear600_dt_board_compat[] = { diff --git a/arch/arm/plat-spear/Makefile b/arch/arm/plat-spear/Makefile index 4b906bb..cc87823 100644 --- a/arch/arm/plat-spear/Makefile +++ b/arch/arm/plat-spear/Makefile @@ -3,6 +3,6 @@ # # Common support -obj-y := clock.o restart.o time.o +obj-y := clock.o restart.o time.o pl080.o obj-$(CONFIG_ARCH_SPEAR3XX_DT) += shirq.o padmux.o diff --git a/arch/arm/plat-spear/include/plat/pl080.h b/arch/arm/plat-spear/include/plat/pl080.h new file mode 100644 index 0000000..e14a3e4 --- /dev/null +++ b/arch/arm/plat-spear/include/plat/pl080.h @@ -0,0 +1,21 @@ +/* + * arch/arm/plat-spear/include/plat/pl080.h + * + * DMAC pl080 definitions for SPEAr platform + * + * Copyright (C) 2012 ST Microelectronics + * Viresh Kumar <[email protected]> + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#ifndef __PLAT_PL080_H +#define __PLAT_PL080_H + +struct pl08x_dma_chan; +int pl080_get_signal(struct pl08x_dma_chan *ch); +void pl080_put_signal(struct pl08x_dma_chan *ch); + +#endif /* __PLAT_PL080_H */ diff --git a/arch/arm/plat-spear/pl080.c b/arch/arm/plat-spear/pl080.c new file mode 100644 index 0000000..d53d75e --- /dev/null +++ b/arch/arm/plat-spear/pl080.c @@ -0,0 +1,79 @@ +/* + * arch/arm/plat-spear/pl080.c + * + * DMAC pl080 definitions for SPEAr platform + * + * Copyright (C) 2012 ST Microelectronics + * Viresh Kumar <[email protected]> + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#include <linux/amba/pl08x.h> +#include <linux/amba/bus.h> +#include <linux/bug.h> +#include <linux/err.h> +#include <linux/io.h> +#include <linux/spinlock_types.h> +#include <mach/misc_regs.h> + +static spinlock_t lock = __SPIN_LOCK_UNLOCKED(x); + +struct { + unsigned char busy; + unsigned char val; +} signals[16] = {{0, 0}, }; + +int pl080_get_signal(struct pl08x_dma_chan *ch) +{ + const struct pl08x_channel_data *cd = ch->cd; + unsigned int signal = cd->min_signal, val; + unsigned long flags; + + spin_lock_irqsave(&lock, flags); + + /* Return if signal is already acquired by somebody else */ + if (signals[signal].busy && + (signals[signal].val != cd->muxval)) { + spin_unlock_irqrestore(&lock, flags); + return -EBUSY; + } + + /* If acquiring for the first time, configure it */ + if (!signals[signal].busy) { + val = readl(DMA_CHN_CFG); + + /* + * Each request line has two bits in DMA_CHN_CFG register. To + * goto the bits of current request line, do left shift of + * value by 2 * signal number. + */ + val &= ~(0x3 << (signal * 2)); + val |= cd->muxval << (signal * 2); + writel(val, DMA_CHN_CFG); + } + + signals[signal].busy++; + signals[signal].val = cd->muxval; + spin_unlock_irqrestore(&lock, flags); + + return signal; +} + +void pl080_put_signal(struct pl08x_dma_chan *ch) +{ + const struct pl08x_channel_data *cd = ch->cd; + unsigned long flags; + + spin_lock_irqsave(&lock, flags); + + /* if signal is not used */ + if (!signals[cd->min_signal].busy) + BUG(); + + signals[cd->min_signal].busy--; + + spin_unlock_irqrestore(&lock, flags); +} -- 1.7.10.rc2.10.gb47606 _______________________________________________ devicetree-discuss mailing list [email protected] https://lists.ozlabs.org/listinfo/devicetree-discuss
