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| author | Roy Huang <roy.huang@analog.com> | 2007-10-10 23:31:19 +0800 |
|---|---|---|
| committer | Bryan Wu <bryan.wu@analog.com> | 2007-10-10 23:31:19 +0800 |
| commit | 1d945e2b3e421f2ce01b2eb260392f888406933f (patch) | |
| tree | 306716a6ebba2e17af352ece0bad9af34c9a7843 | |
| parent | 518039bc24cbb9ce34665814fe120eac50bedd9a (diff) | |
| download | linux-3.10-1d945e2b3e421f2ce01b2eb260392f888406933f.tar.gz linux-3.10-1d945e2b3e421f2ce01b2eb260392f888406933f.tar.bz2 linux-3.10-1d945e2b3e421f2ce01b2eb260392f888406933f.zip | |
Blackfin arch: add set_dma_curr_addr DMA API to support sound driver recording function
Signed-off-by: Roy Huang <roy.huang@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
| -rw-r--r-- | arch/blackfin/kernel/bfin_dma_5xx.c | 10 | ||||
| -rw-r--r-- | include/asm-blackfin/dma.h | 1 |
2 files changed, 11 insertions, 0 deletions
diff --git a/arch/blackfin/kernel/bfin_dma_5xx.c b/arch/blackfin/kernel/bfin_dma_5xx.c index 7cf02f02a1d..7e220190835 100644 --- a/arch/blackfin/kernel/bfin_dma_5xx.c +++ b/arch/blackfin/kernel/bfin_dma_5xx.c @@ -345,6 +345,16 @@ void set_dma_sg(unsigned int channel, struct dmasg *sg, int nr_sg) } EXPORT_SYMBOL(set_dma_sg); +void set_dma_curr_addr(unsigned int channel, unsigned long addr) +{ + BUG_ON(!(dma_ch[channel].chan_status != DMA_CHANNEL_FREE + && channel < MAX_BLACKFIN_DMA_CHANNEL)); + + dma_ch[channel].regs->curr_addr_ptr = addr; + SSYNC(); +} +EXPORT_SYMBOL(set_dma_curr_addr); + /*------------------------------------------------------------------------------ * Get the DMA status of a specific DMA channel from the system. *-----------------------------------------------------------------------------*/ diff --git a/include/asm-blackfin/dma.h b/include/asm-blackfin/dma.h index be0d913e551..4269082b154 100644 --- a/include/asm-blackfin/dma.h +++ b/include/asm-blackfin/dma.h @@ -159,6 +159,7 @@ void set_dma_y_modify(unsigned int channel, short y_modify); void set_dma_config(unsigned int channel, unsigned short config); unsigned short set_bfin_dma_config(char direction, char flow_mode, char intr_mode, char dma_mode, char width); +void set_dma_curr_addr(unsigned int channel, unsigned long addr); /* get curr status for polling */ unsigned short get_dma_curr_irqstat(unsigned int channel); |