diff options
Diffstat (limited to 'drivers/usb/musb/ux500_dma.c')
| -rw-r--r-- | drivers/usb/musb/ux500_dma.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/drivers/usb/musb/ux500_dma.c b/drivers/usb/musb/ux500_dma.c index 4bd5400..7d80699 100644 --- a/drivers/usb/musb/ux500_dma.c +++ b/drivers/usb/musb/ux500_dma.c @@ -34,6 +34,11 @@ #include <linux/platform_data/usb-musb-ux500.h> #include "musb_core.h" +static const char *iep_chan_names[] = { "iep_1_9", "iep_2_10", "iep_3_11", "iep_4_12", + "iep_5_13", "iep_6_14", "iep_7_15", "iep_8" }; +static const char *oep_chan_names[] = { "oep_1_9", "oep_2_10", "oep_3_11", "oep_4_12", + "oep_5_13", "oep_6_14", "oep_7_15", "oep_8" }; + struct ux500_dma_channel { struct dma_channel channel; struct ux500_dma_controller *controller; @@ -291,6 +296,7 @@ static int ux500_dma_controller_start(struct dma_controller *c) struct musb_hdrc_platform_data *plat = dev->platform_data; struct ux500_musb_board_data *data; struct dma_channel *dma_channel = NULL; + char **chan_names; u32 ch_num; u8 dir; u8 is_tx = 0; @@ -312,6 +318,7 @@ static int ux500_dma_controller_start(struct dma_controller *c) /* Prepare the loop for RX channels */ channel_array = controller->rx_channel; param_array = data ? data->dma_rx_param_array : NULL; + chan_names = (char **)iep_chan_names; for (dir = 0; dir < 2; dir++) { for (ch_num = 0; @@ -327,9 +334,15 @@ static int ux500_dma_controller_start(struct dma_controller *c) dma_channel->status = MUSB_DMA_STATUS_FREE; dma_channel->max_len = SZ_16M; - ux500_channel->dma_chan = dma_request_channel(mask, - data->dma_filter, - param_array[ch_num]); + ux500_channel->dma_chan = + dma_request_slave_channel(dev, chan_names[ch_num]); + + if (!ux500_channel->dma_chan) + ux500_channel->dma_chan = + dma_request_channel(mask, + data->dma_filter, + param_array[ch_num]); + if (!ux500_channel->dma_chan) { ERR("Dma pipe allocation error dir=%d ch=%d\n", dir, ch_num); @@ -345,6 +358,7 @@ static int ux500_dma_controller_start(struct dma_controller *c) /* Prepare the loop for TX channels */ channel_array = controller->tx_channel; param_array = data ? data->dma_tx_param_array : NULL; + chan_names = (char **)oep_chan_names; is_tx = 1; } |