SPEAr: Add PL080 DMA support for 3xx and 6xx

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@st.com>

2 files changed, 372 insertions, 2 deletions

diff --git a/arch/arm/mach-spear6xx/clock.c b/arch/arm/mach-spear6xx/clock.c
index 5a469800b142..adadef2b27b4 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 2ed8b14c82c8..5b9e30f54cdb 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[] = {