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>
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 @@
.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[] = {
