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-rw-r--r--arch/arm/mach-davinci/board-dm646x-evm.c35
-rw-r--r--arch/arm/mach-davinci/dm646x.c8
-rw-r--r--arch/arm/mach-davinci/include/mach/dm646x.h1
3 files changed, 43 insertions, 1 deletions
diff --git a/arch/arm/mach-davinci/board-dm646x-evm.c b/arch/arm/mach-davinci/board-dm646x-evm.c
index 6d8889342c9f..b8b1deca95e0 100644
--- a/arch/arm/mach-davinci/board-dm646x-evm.c
+++ b/arch/arm/mach-davinci/board-dm646x-evm.c
@@ -721,6 +721,39 @@ static struct davinci_uart_config uart_config __initdata = {
#define DM646X_EVM_PHY_MASK (0x2)
#define DM646X_EVM_MDIO_FREQUENCY (2200000) /* PHY bus frequency */
+/*
+ * The following EDMA channels/slots are not being used by drivers (for
+ * example: Timer, GPIO, UART events etc) on dm646x, hence they are being
+ * reserved for codecs on the DSP side.
+ */
+static const s16 dm646x_dma_rsv_chans[][2] = {
+ /* (offset, number) */
+ { 0, 4},
+ {13, 3},
+ {24, 4},
+ {30, 2},
+ {54, 3},
+ {-1, -1}
+};
+
+static const s16 dm646x_dma_rsv_slots[][2] = {
+ /* (offset, number) */
+ { 0, 4},
+ {13, 3},
+ {24, 4},
+ {30, 2},
+ {54, 3},
+ {128, 384},
+ {-1, -1}
+};
+
+static struct edma_rsv_info dm646x_edma_rsv[] = {
+ {
+ .rsv_chans = dm646x_dma_rsv_chans,
+ .rsv_slots = dm646x_dma_rsv_slots,
+ },
+};
+
static __init void evm_init(void)
{
struct davinci_soc_info *soc_info = &davinci_soc_info;
@@ -732,6 +765,8 @@ static __init void evm_init(void)
platform_device_register(&davinci_nand_device);
+ dm646x_init_edma(dm646x_edma_rsv);
+
if (HAS_ATA)
davinci_init_ide();
diff --git a/arch/arm/mach-davinci/dm646x.c b/arch/arm/mach-davinci/dm646x.c
index bfc887e9f118..e4a3df1872ac 100644
--- a/arch/arm/mach-davinci/dm646x.c
+++ b/arch/arm/mach-davinci/dm646x.c
@@ -879,6 +879,13 @@ void dm646x_setup_vpif(struct vpif_display_config *display_config,
platform_device_register(&vpif_capture_dev);
}
+int __init dm646x_init_edma(struct edma_rsv_info *rsv)
+{
+ edma_cc0_info.rsv = rsv;
+
+ return platform_device_register(&dm646x_edma_device);
+}
+
void __init dm646x_init(void)
{
dm646x_board_setup_refclk(&ref_clk);
@@ -890,7 +897,6 @@ static int __init dm646x_init_devices(void)
if (!cpu_is_davinci_dm646x())
return 0;
- platform_device_register(&dm646x_edma_device);
platform_device_register(&dm646x_emac_device);
return 0;
}
diff --git a/arch/arm/mach-davinci/include/mach/dm646x.h b/arch/arm/mach-davinci/include/mach/dm646x.h
index add6f794a362..0a27ee9a70e1 100644
--- a/arch/arm/mach-davinci/include/mach/dm646x.h
+++ b/arch/arm/mach-davinci/include/mach/dm646x.h
@@ -32,6 +32,7 @@ void __init dm646x_init(void);
void __init dm646x_init_mcasp0(struct snd_platform_data *pdata);
void __init dm646x_init_mcasp1(struct snd_platform_data *pdata);
void __init dm646x_board_setup_refclk(struct clk *clk);
+int __init dm646x_init_edma(struct edma_rsv_info *rsv);
void dm646x_video_init(void);