diff options
| -rw-r--r-- | drivers/dma/fsldma.c | 29 | ||||
| -rw-r--r-- | drivers/dma/fsldma.h | 4 |
2 files changed, 15 insertions, 18 deletions
diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c index 82b8e9f9c7bf..5da1a4a817e3 100644 --- a/drivers/dma/fsldma.c +++ b/drivers/dma/fsldma.c | |||
| @@ -89,7 +89,7 @@ static void set_desc_cnt(struct fsldma_chan *chan, | |||
| 89 | } | 89 | } |
| 90 | 90 | ||
| 91 | static void set_desc_src(struct fsldma_chan *chan, | 91 | static void set_desc_src(struct fsldma_chan *chan, |
| 92 | struct fsl_dma_ld_hw *hw, dma_addr_t src) | 92 | struct fsl_dma_ld_hw *hw, dma_addr_t src) |
| 93 | { | 93 | { |
| 94 | u64 snoop_bits; | 94 | u64 snoop_bits; |
| 95 | 95 | ||
| @@ -99,7 +99,7 @@ static void set_desc_src(struct fsldma_chan *chan, | |||
| 99 | } | 99 | } |
| 100 | 100 | ||
| 101 | static void set_desc_dst(struct fsldma_chan *chan, | 101 | static void set_desc_dst(struct fsldma_chan *chan, |
| 102 | struct fsl_dma_ld_hw *hw, dma_addr_t dst) | 102 | struct fsl_dma_ld_hw *hw, dma_addr_t dst) |
| 103 | { | 103 | { |
| 104 | u64 snoop_bits; | 104 | u64 snoop_bits; |
| 105 | 105 | ||
| @@ -109,7 +109,7 @@ static void set_desc_dst(struct fsldma_chan *chan, | |||
| 109 | } | 109 | } |
| 110 | 110 | ||
| 111 | static void set_desc_next(struct fsldma_chan *chan, | 111 | static void set_desc_next(struct fsldma_chan *chan, |
| 112 | struct fsl_dma_ld_hw *hw, dma_addr_t next) | 112 | struct fsl_dma_ld_hw *hw, dma_addr_t next) |
| 113 | { | 113 | { |
| 114 | u64 snoop_bits; | 114 | u64 snoop_bits; |
| 115 | 115 | ||
| @@ -118,8 +118,7 @@ static void set_desc_next(struct fsldma_chan *chan, | |||
| 118 | hw->next_ln_addr = CPU_TO_DMA(chan, snoop_bits | next, 64); | 118 | hw->next_ln_addr = CPU_TO_DMA(chan, snoop_bits | next, 64); |
| 119 | } | 119 | } |
| 120 | 120 | ||
| 121 | static void set_ld_eol(struct fsldma_chan *chan, | 121 | static void set_ld_eol(struct fsldma_chan *chan, struct fsl_desc_sw *desc) |
| 122 | struct fsl_desc_sw *desc) | ||
| 123 | { | 122 | { |
| 124 | u64 snoop_bits; | 123 | u64 snoop_bits; |
| 125 | 124 | ||
| @@ -338,8 +337,7 @@ static void fsl_chan_toggle_ext_start(struct fsldma_chan *chan, int enable) | |||
| 338 | chan->feature &= ~FSL_DMA_CHAN_START_EXT; | 337 | chan->feature &= ~FSL_DMA_CHAN_START_EXT; |
| 339 | } | 338 | } |
| 340 | 339 | ||
| 341 | static void append_ld_queue(struct fsldma_chan *chan, | 340 | static void append_ld_queue(struct fsldma_chan *chan, struct fsl_desc_sw *desc) |
| 342 | struct fsl_desc_sw *desc) | ||
| 343 | { | 341 | { |
| 344 | struct fsl_desc_sw *tail = to_fsl_desc(chan->ld_pending.prev); | 342 | struct fsl_desc_sw *tail = to_fsl_desc(chan->ld_pending.prev); |
| 345 | 343 | ||
| @@ -380,8 +378,8 @@ static dma_cookie_t fsl_dma_tx_submit(struct dma_async_tx_descriptor *tx) | |||
| 380 | cookie = chan->common.cookie; | 378 | cookie = chan->common.cookie; |
| 381 | list_for_each_entry(child, &desc->tx_list, node) { | 379 | list_for_each_entry(child, &desc->tx_list, node) { |
| 382 | cookie++; | 380 | cookie++; |
| 383 | if (cookie < 0) | 381 | if (cookie < DMA_MIN_COOKIE) |
| 384 | cookie = 1; | 382 | cookie = DMA_MIN_COOKIE; |
| 385 | 383 | ||
| 386 | child->async_tx.cookie = cookie; | 384 | child->async_tx.cookie = cookie; |
| 387 | } | 385 | } |
| @@ -402,8 +400,7 @@ static dma_cookie_t fsl_dma_tx_submit(struct dma_async_tx_descriptor *tx) | |||
| 402 | * | 400 | * |
| 403 | * Return - The descriptor allocated. NULL for failed. | 401 | * Return - The descriptor allocated. NULL for failed. |
| 404 | */ | 402 | */ |
| 405 | static struct fsl_desc_sw *fsl_dma_alloc_descriptor( | 403 | static struct fsl_desc_sw *fsl_dma_alloc_descriptor(struct fsldma_chan *chan) |
| 406 | struct fsldma_chan *chan) | ||
| 407 | { | 404 | { |
| 408 | struct fsl_desc_sw *desc; | 405 | struct fsl_desc_sw *desc; |
| 409 | dma_addr_t pdesc; | 406 | dma_addr_t pdesc; |
| @@ -427,7 +424,6 @@ static struct fsl_desc_sw *fsl_dma_alloc_descriptor( | |||
| 427 | return desc; | 424 | return desc; |
| 428 | } | 425 | } |
| 429 | 426 | ||
| 430 | |||
| 431 | /** | 427 | /** |
| 432 | * fsl_dma_alloc_chan_resources - Allocate resources for DMA channel. | 428 | * fsl_dma_alloc_chan_resources - Allocate resources for DMA channel. |
| 433 | * @chan : Freescale DMA channel | 429 | * @chan : Freescale DMA channel |
| @@ -537,14 +533,15 @@ fsl_dma_prep_interrupt(struct dma_chan *dchan, unsigned long flags) | |||
| 537 | /* Insert the link descriptor to the LD ring */ | 533 | /* Insert the link descriptor to the LD ring */ |
| 538 | list_add_tail(&new->node, &new->tx_list); | 534 | list_add_tail(&new->node, &new->tx_list); |
| 539 | 535 | ||
| 540 | /* Set End-of-link to the last link descriptor of new list*/ | 536 | /* Set End-of-link to the last link descriptor of new list */ |
| 541 | set_ld_eol(chan, new); | 537 | set_ld_eol(chan, new); |
| 542 | 538 | ||
| 543 | return &new->async_tx; | 539 | return &new->async_tx; |
| 544 | } | 540 | } |
| 545 | 541 | ||
| 546 | static struct dma_async_tx_descriptor *fsl_dma_prep_memcpy( | 542 | static struct dma_async_tx_descriptor * |
| 547 | struct dma_chan *dchan, dma_addr_t dma_dst, dma_addr_t dma_src, | 543 | fsl_dma_prep_memcpy(struct dma_chan *dchan, |
| 544 | dma_addr_t dma_dst, dma_addr_t dma_src, | ||
| 548 | size_t len, unsigned long flags) | 545 | size_t len, unsigned long flags) |
| 549 | { | 546 | { |
| 550 | struct fsldma_chan *chan; | 547 | struct fsldma_chan *chan; |
| @@ -594,7 +591,7 @@ static struct dma_async_tx_descriptor *fsl_dma_prep_memcpy( | |||
| 594 | new->async_tx.flags = flags; /* client is in control of this ack */ | 591 | new->async_tx.flags = flags; /* client is in control of this ack */ |
| 595 | new->async_tx.cookie = -EBUSY; | 592 | new->async_tx.cookie = -EBUSY; |
| 596 | 593 | ||
| 597 | /* Set End-of-link to the last link descriptor of new list*/ | 594 | /* Set End-of-link to the last link descriptor of new list */ |
| 598 | set_ld_eol(chan, new); | 595 | set_ld_eol(chan, new); |
| 599 | 596 | ||
| 600 | return &first->async_tx; | 597 | return &first->async_tx; |
diff --git a/drivers/dma/fsldma.h b/drivers/dma/fsldma.h index 113e7134010b..49189dacd5f4 100644 --- a/drivers/dma/fsldma.h +++ b/drivers/dma/fsldma.h | |||
| @@ -102,8 +102,8 @@ struct fsl_desc_sw { | |||
| 102 | } __attribute__((aligned(32))); | 102 | } __attribute__((aligned(32))); |
| 103 | 103 | ||
| 104 | struct fsldma_chan_regs { | 104 | struct fsldma_chan_regs { |
| 105 | u32 mr; /* 0x00 - Mode Register */ | 105 | u32 mr; /* 0x00 - Mode Register */ |
| 106 | u32 sr; /* 0x04 - Status Register */ | 106 | u32 sr; /* 0x04 - Status Register */ |
| 107 | u64 cdar; /* 0x08 - Current descriptor address register */ | 107 | u64 cdar; /* 0x08 - Current descriptor address register */ |
| 108 | u64 sar; /* 0x10 - Source Address Register */ | 108 | u64 sar; /* 0x10 - Source Address Register */ |
| 109 | u64 dar; /* 0x18 - Destination Address Register */ | 109 | u64 dar; /* 0x18 - Destination Address Register */ |
