[PATCH V2 6/7] SPEAr: Add PL080 DMA support for 3xx and 6xx
Viresh Kumar
viresh.kumar at st.com
Wed Mar 28 20:41:47 EST 2012
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 <viresh.kumar at st.com>
---
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 | 6 +-
arch/arm/mach-spear3xx/spear300.c | 191 +++++++++++++
arch/arm/mach-spear3xx/spear310.c | 190 +++++++++++++
arch/arm/mach-spear3xx/spear320.c | 190 +++++++++++++
arch/arm/mach-spear3xx/spear3xx.c | 19 ++
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, 1101 insertions(+), 5 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 f2ee991..eaecc29 100644
--- a/arch/arm/boot/dts/spear300-evb.dts
+++ b/arch/arm/boot/dts/spear300-evb.dts
@@ -29,6 +29,10 @@
status = "okay";
};
+ dma at fc400000 {
+ status = "okay";
+ };
+
fsmc: flash at 94000000 {
status = "okay";
};
diff --git a/arch/arm/boot/dts/spear310-evb.dts b/arch/arm/boot/dts/spear310-evb.dts
index ec19d7b..c86af33 100644
--- a/arch/arm/boot/dts/spear310-evb.dts
+++ b/arch/arm/boot/dts/spear310-evb.dts
@@ -25,6 +25,10 @@
};
ahb {
+ dma at fc400000 {
+ status = "okay";
+ };
+
fsmc: flash at 44000000 {
status = "okay";
};
diff --git a/arch/arm/boot/dts/spear320-evb.dts b/arch/arm/boot/dts/spear320-evb.dts
index 5681a97..d43de71 100644
--- a/arch/arm/boot/dts/spear320-evb.dts
+++ b/arch/arm/boot/dts/spear320-evb.dts
@@ -29,6 +29,10 @@
status = "okay";
};
+ dma at fc400000 {
+ status = "okay";
+ };
+
fsmc: flash at 4c000000 {
status = "okay";
};
diff --git a/arch/arm/boot/dts/spear3xx.dtsi b/arch/arm/boot/dts/spear3xx.dtsi
index a31e52e..c3f3c41 100644
--- a/arch/arm/boot/dts/spear3xx.dtsi
+++ b/arch/arm/boot/dts/spear3xx.dtsi
@@ -38,6 +38,14 @@
#interrupt-cells = <1>;
};
+ dma at fc400000 {
+ compatible = "arm,pl080", "arm,primecell";
+ reg = <0xfc400000 0x1000>;
+ interrupt-parent = <&vic>;
+ interrupts = <8>;
+ status = "disabled";
+ };
+
gmac: eth at 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 at fc400000 {
+ status = "okay";
+ };
+
gmac: ethernet at 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 at fc400000 {
+ compatible = "arm,pl080", "arm,primecell";
+ reg = <0xfc400000 0x1000>;
+ interrupt-parent = <&vic1>;
+ interrupts = <10>;
+ status = "disabled";
+ };
+
gmac: ethernet at 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 6833d08..4eaff9b 100644
--- a/arch/arm/mach-spear3xx/clock.c
+++ b/arch/arm/mach-spear3xx/clock.c
@@ -701,7 +701,7 @@ 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("e0800000.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 8af11da..153f68b 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/platform_device.h>
#include <linux/amba/bus.h>
@@ -33,11 +34,14 @@
/* Add spear3xx family device structure declarations here */
extern struct sys_timer spear3xx_timer;
extern struct pl022_ssp_controller pl022_plat_data;
+extern struct pl08x_platform_data pl080_plat_data;
/* SPEAr3xx auxdata to pass platform data */
#define SPEAR3XX_AUXDATA_LOOKUP \
OF_DEV_AUXDATA("arm,pl022", SPEAR3XX_ICM1_SSP_BASE, NULL, \
- &pl022_plat_data)
+ &pl022_plat_data), \
+ OF_DEV_AUXDATA("arm,pl080", SPEAR3XX_ICM3_DMA_BASE, NULL, \
+ &pl080_plat_data)
/* Add spear3xx family function declarations here */
void __init spear_setup_timer(void);
diff --git a/arch/arm/mach-spear3xx/spear300.c b/arch/arm/mach-spear3xx/spear300.c
index 1a1bd93..5fc5213 100644
--- a/arch/arm/mach-spear3xx/spear300.c
+++ b/arch/arm/mach-spear3xx/spear300.c
@@ -13,6 +13,7 @@
#define pr_fmt(fmt) "SPEAr300: " fmt
+#include <linux/amba/pl08x.h>
#include <linux/of_platform.h>
#include <asm/hardware/vic.h>
#include <asm/mach/arch.h>
@@ -440,6 +441,193 @@ static struct pmx_dev *spear300_evb_pmx_devs[] = {
&spear300_pmx_gpio1,
};
+/* 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,
+ },
+};
+
/* Add SPEAr300 auxdata to pass platform data */
static struct of_dev_auxdata spear300_auxdata_lookup[] __initdata = {
SPEAR3XX_AUXDATA_LOOKUP,
@@ -450,6 +638,9 @@ static void __init spear300_dt_init(void)
{
int ret = -EINVAL;
+ pl080_plat_data.slave_channels = spear300_dma_info;
+ pl080_plat_data.num_slave_channels = ARRAY_SIZE(spear300_dma_info);
+
of_platform_populate(NULL, of_default_bus_match_table,
spear300_auxdata_lookup, NULL);
diff --git a/arch/arm/mach-spear3xx/spear310.c b/arch/arm/mach-spear3xx/spear310.c
index 0b58313..dccef4b 100644
--- a/arch/arm/mach-spear3xx/spear310.c
+++ b/arch/arm/mach-spear3xx/spear310.c
@@ -284,6 +284,193 @@ static struct pmx_dev *spear310_evb_pmx_devs[] = {
&spear310_pmx_tdm0,
};
+/* 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 = "uart1_rx",
+ .min_signal = 0,
+ .max_signal = 0,
+ .muxval = 1,
+ .cctl = 0,
+ .periph_buses = PL08X_AHB1,
+ }, {
+ .bus_id = "uart1_tx",
+ .min_signal = 1,
+ .max_signal = 1,
+ .muxval = 1,
+ .cctl = 0,
+ .periph_buses = PL08X_AHB1,
+ }, {
+ .bus_id = "uart2_rx",
+ .min_signal = 2,
+ .max_signal = 2,
+ .muxval = 1,
+ .cctl = 0,
+ .periph_buses = PL08X_AHB1,
+ }, {
+ .bus_id = "uart2_tx",
+ .min_signal = 3,
+ .max_signal = 3,
+ .muxval = 1,
+ .cctl = 0,
+ .periph_buses = PL08X_AHB1,
+ }, {
+ .bus_id = "uart3_rx",
+ .min_signal = 4,
+ .max_signal = 4,
+ .muxval = 1,
+ .cctl = 0,
+ .periph_buses = PL08X_AHB1,
+ }, {
+ .bus_id = "uart3_tx",
+ .min_signal = 5,
+ .max_signal = 5,
+ .muxval = 1,
+ .cctl = 0,
+ .periph_buses = PL08X_AHB1,
+ }, {
+ .bus_id = "uart4_rx",
+ .min_signal = 6,
+ .max_signal = 6,
+ .muxval = 1,
+ .cctl = 0,
+ .periph_buses = PL08X_AHB1,
+ }, {
+ .bus_id = "uart4_tx",
+ .min_signal = 7,
+ .max_signal = 7,
+ .muxval = 1,
+ .cctl = 0,
+ .periph_buses = PL08X_AHB1,
+ }, {
+ .bus_id = "uart5_rx",
+ .min_signal = 8,
+ .max_signal = 8,
+ .muxval = 1,
+ .cctl = 0,
+ .periph_buses = PL08X_AHB1,
+ }, {
+ .bus_id = "uart5_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 spear310_uart_data[] = {
{
@@ -330,6 +517,9 @@ static void __init spear310_dt_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);
+
of_platform_populate(NULL, of_default_bus_match_table,
spear310_auxdata_lookup, NULL);
diff --git a/arch/arm/mach-spear3xx/spear320.c b/arch/arm/mach-spear3xx/spear320.c
index fb9b17e..1512711 100644
--- a/arch/arm/mach-spear3xx/spear320.c
+++ b/arch/arm/mach-spear3xx/spear320.c
@@ -535,6 +535,193 @@ static struct pmx_dev *spear320_evb_pmx_devs[] = {
&spear320_pmx_mii1,
};
+/* 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 spear320_ssp_data[] = {
{
.bus_id = 1,
@@ -584,6 +771,9 @@ static void __init spear320_dt_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);
+
of_platform_populate(NULL, of_default_bus_match_table,
spear320_auxdata_lookup, NULL);
diff --git a/arch/arm/mach-spear3xx/spear3xx.c b/arch/arm/mach-spear3xx/spear3xx.c
index f074638..9585cec 100644
--- a/arch/arm/mach-spear3xx/spear3xx.c
+++ b/arch/arm/mach-spear3xx/spear3xx.c
@@ -17,7 +17,9 @@
#include <linux/amba/pl08x.h>
#include <linux/of_irq.h>
#include <linux/io.h>
+#include <asm/hardware/pl080.h>
#include <asm/hardware/vic.h>
+#include <plat/pl080.h>
#include <mach/generic.h>
#include <mach/hardware.h>
@@ -465,6 +467,23 @@ struct pl022_ssp_controller pl022_plat_data = {
.num_chipselect = 2,
};
+/* 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,
+};
+
/* Following will create static virtual/physical mappings */
struct map_desc spear3xx_io_desc[] __initdata = {
{
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 2ed8b14..5b9e30f 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 <viresh.kumar at st.com>
+ *
+ * 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 <viresh.kumar at st.com>
+ *
+ * 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
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