From: Victor Rodriguez <victor.rodrig...@sasken.com>
This patch adds EDMA support for the Hawkboard-L138 system
Signed-off-by: Victor Rodriguez <victor.rodrig...@sasken.com>
Tested-by: Rene Gonzalez <renegs.2...@gmail.com>
---
arch/arm/mach-davinci/board-omapl138-hawk.c | 54 +++++++++++++++++++++++++++
1 files changed, 54 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-davinci/board-omapl138-hawk.c
b/arch/arm/mach-davinci/board-omapl138-hawk.c
index 62d35f0..114fc9b 100644
--- a/arch/arm/mach-davinci/board-omapl138-hawk.c
+++ b/arch/arm/mach-davinci/board-omapl138-hawk.c
@@ -60,6 +60,55 @@ static __init void omapl138_hawk_config_emac(void)
__func__, ret);
}
+/*
+ * The following EDMA channels/slots are not being used by drivers (for
+ * example: Timer, GPIO, UART events etc) on da850/omap-l138 EVM/Hawkboard,
+ * hence they are being reserved for codecs on the DSP side.
+ */
+static const s16 da850_dma0_rsv_chans[][2] = {
+ /* (offset, number) */
+ { 8, 6},
+ {24, 4},
+ {30, 2},
+ {-1, -1}
+};
+
+static const s16 da850_dma0_rsv_slots[][2] = {
+ /* (offset, number) */
+ { 8, 6},
+ {24, 4},
+ {30, 50},
+ {-1, -1}
+};
+
+static const s16 da850_dma1_rsv_chans[][2] = {
+ /* (offset, number) */
+ { 0, 28},
+ {30, 2},
+ {-1, -1}
+};
+
+static const s16 da850_dma1_rsv_slots[][2] = {
+ /* (offset, number) */
+ { 0, 28},
+ {30, 90},
+ {-1, -1}
+};
+
+static struct edma_rsv_info da850_edma_cc0_rsv = {
+ .rsv_chans = da850_dma0_rsv_chans,
+ .rsv_slots = da850_dma0_rsv_slots,
+};
+
+static struct edma_rsv_info da850_edma_cc1_rsv = {
+ .rsv_chans = da850_dma1_rsv_chans,
+ .rsv_slots = da850_dma1_rsv_slots,
+};
+
+static struct edma_rsv_info *da850_edma_rsv[2] = {
+ &da850_edma_cc0_rsv,
+ &da850_edma_cc1_rsv,
+};
static struct davinci_uart_config omapl138_hawk_uart_config __initdata = {
.enabled_uarts = 0x7,
@@ -73,6 +122,11 @@ static __init void omapl138_hawk_init(void)
omapl138_hawk_config_emac();
+ ret = da850_register_edma(da850_edma_rsv);
+ if (ret)
+ pr_warning("%s: EDMA registration failed: %d\n",
+ __func__, ret);
+
ret = da8xx_register_watchdog();
if (ret)
pr_warning("omapl138_hawk_init: "
--
1.7.0.4
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