Introduce macros to build IDs from controller and channel number, and to extract them. Modify the edma_alloc_slot function to take an extra argument for the controller.
Also, modify the MMC and ASoC drivers to reflect the above changes. Signed-off-by: Sudhakar Rajashekhara <sudhakar....@ti.com> --- arch/arm/mach-davinci/devices.c | 8 ++++---- arch/arm/mach-davinci/dma.c | 25 +++++++++++++++---------- arch/arm/mach-davinci/include/mach/edma.h | 6 +++++- drivers/mmc/host/davinci_mmc.c | 10 +++++----- sound/soc/davinci/davinci-evm.c | 8 ++++---- sound/soc/davinci/davinci-pcm.c | 6 +++--- 6 files changed, 36 insertions(+), 27 deletions(-) diff --git a/arch/arm/mach-davinci/devices.c b/arch/arm/mach-davinci/devices.c index 5b21faf..0968722 100644 --- a/arch/arm/mach-davinci/devices.c +++ b/arch/arm/mach-davinci/devices.c @@ -90,10 +90,10 @@ static struct resource mmcsd0_resources[] = { }, /* DMA channels: RX, then TX */ { - .start = DAVINCI_DMA_MMCRXEVT, + .start = EDMA_CTLR_CHAN(0, DAVINCI_DMA_MMCRXEVT), .flags = IORESOURCE_DMA, }, { - .start = DAVINCI_DMA_MMCTXEVT, + .start = EDMA_CTLR_CHAN(0, DAVINCI_DMA_MMCTXEVT), .flags = IORESOURCE_DMA, }, }; @@ -127,10 +127,10 @@ static struct resource mmcsd1_resources[] = { }, /* DMA channels: RX, then TX */ { - .start = 30, /* rx */ + .start = EDMA_CTLR_CHAN(0, 30), /* rx */ .flags = IORESOURCE_DMA, }, { - .start = 31, /* tx */ + .start = EDMA_CTLR_CHAN(0, 31), /* tx */ .flags = IORESOURCE_DMA, }, }; diff --git a/arch/arm/mach-davinci/dma.c b/arch/arm/mach-davinci/dma.c index 53f6c9b..fdfd59d 100644 --- a/arch/arm/mach-davinci/dma.c +++ b/arch/arm/mach-davinci/dma.c @@ -573,28 +573,33 @@ EXPORT_SYMBOL(edma_free_channel); * * Returns the number of the slot, else negative errno. */ -int edma_alloc_slot(int slot) +int edma_alloc_slot(unsigned ctlr, int slot) { + if (slot >= 0) + slot = EDMA_CHAN(slot); + if (slot < 0) { - slot = num_channels; + slot = edma_info[ctlr]->num_channels; for (;;) { - slot = find_next_zero_bit(edma_inuse, - num_slots, slot); - if (slot == num_slots) + slot = find_next_zero_bit(edma_info[ctlr]->edma_inuse, + edma_info[ctlr]->num_slots, slot); + if (slot == edma_info[ctlr]->num_slots) return -ENOMEM; - if (!test_and_set_bit(slot, edma_inuse)) + if (!test_and_set_bit(slot, + edma_info[ctlr]->edma_inuse)) break; } - } else if (slot < num_channels || slot >= num_slots) { + } else if (slot < edma_info[ctlr]->num_channels || + slot >= edma_info[ctlr]->num_slots) { return -EINVAL; - } else if (test_and_set_bit(slot, edma_inuse)) { + } else if (test_and_set_bit(slot, edma_info[ctlr]->edma_inuse)) { return -EBUSY; } - memcpy_toio(edmacc_regs_base + PARM_OFFSET(slot), + memcpy_toio(edmacc_regs_base[ctlr] + PARM_OFFSET(slot), &dummy_paramset, PARM_SIZE); - return slot; + return EDMA_CTLR_CHAN(ctlr, slot); } EXPORT_SYMBOL(edma_alloc_slot); diff --git a/arch/arm/mach-davinci/include/mach/edma.h b/arch/arm/mach-davinci/include/mach/edma.h index 517ae36..aaeeb96 100644 --- a/arch/arm/mach-davinci/include/mach/edma.h +++ b/arch/arm/mach-davinci/include/mach/edma.h @@ -171,6 +171,10 @@ enum sync_dimension { ABSYNC = 1 }; +#define EDMA_CTLR_CHAN(ctlr, chan) (((ctlr) << 16) | (chan)) +#define EDMA_CTLR(i) ((i) >> 16) +#define EDMA_CHAN_SLOT(i) ((i) & 0xffff) + #define EDMA_CHANNEL_ANY -1 /* for edma_alloc_channel() */ #define EDMA_SLOT_ANY -1 /* for edma_alloc_slot() */ @@ -181,7 +185,7 @@ int edma_alloc_channel(int channel, void edma_free_channel(unsigned channel); /* alloc/free parameter RAM slots */ -int edma_alloc_slot(int slot); +int edma_alloc_slot(unsigned ctlr, int slot); void edma_free_slot(unsigned slot); /* calls that operate on part of a parameter RAM slot */ diff --git a/drivers/mmc/host/davinci_mmc.c b/drivers/mmc/host/davinci_mmc.c index 9b23802..5babb1f 100644 --- a/drivers/mmc/host/davinci_mmc.c +++ b/drivers/mmc/host/davinci_mmc.c @@ -178,7 +178,7 @@ struct mmc_davinci_host { u32 buffer_bytes_left; u32 bytes_left; - u8 rxdma, txdma; + u32 rxdma, txdma; bool use_dma; bool do_dma; @@ -190,7 +190,7 @@ struct mmc_davinci_host { struct edmacc_param tx_template; struct edmacc_param rx_template; unsigned n_link; - u8 links[NR_SG - 1]; + u32 links[NR_SG - 1]; /* For PIO we walk scatterlists one segment at a time. */ unsigned int sg_len; @@ -466,7 +466,7 @@ static void __init mmc_davinci_dma_setup(struct mmc_davinci_host *host, edma_read_slot(sync_dev, template); /* don't bother with irqs or chaining */ - template->opt |= sync_dev << 12; + template->opt |= EDMA_CHAN_SLOT(sync_dev) << 12; } static void mmc_davinci_send_dma_request(struct mmc_davinci_host *host, @@ -500,7 +500,7 @@ static void mmc_davinci_send_dma_request(struct mmc_davinci_host *host, unsigned count = sg_dma_len(sg); template->link_bcntrld = sg_len - ? (host->links[link] << 5) + ? (EDMA_CHAN_SLOT(host->links[link]) << 5) : 0xffff; if (count > bytes_left) @@ -594,7 +594,7 @@ static int __init davinci_acquire_dma_channels(struct mmc_davinci_host *host) * channel as needed to handle a scatterlist. */ for (i = 0; i < ARRAY_SIZE(host->links); i++) { - r = edma_alloc_slot(EDMA_SLOT_ANY); + r = edma_alloc_slot(EDMA_CTLR(host->txdma), EDMA_SLOT_ANY); if (r < 0) { dev_dbg(mmc_dev(host->mmc), "dma PaRAM alloc --> %d\n", r); diff --git a/sound/soc/davinci/davinci-evm.c b/sound/soc/davinci/davinci-evm.c index 4ddb13d..ea7a3ce 100644 --- a/sound/soc/davinci/davinci-evm.c +++ b/sound/soc/davinci/davinci-evm.c @@ -175,8 +175,8 @@ static struct resource evm_snd_resources[] = { }; static struct evm_snd_platform_data evm_snd_data = { - .tx_dma_ch = DAVINCI_DMA_ASP0_TX, - .rx_dma_ch = DAVINCI_DMA_ASP0_RX, + .tx_dma_ch = EDMA_CTLR_CHAN(0, DAVINCI_DMA_ASP0_TX), + .rx_dma_ch = EDMA_CTLR_CHAN(0, DAVINCI_DMA_ASP0_RX), }; /* DM335 EVM uses ASP1; line-out is a stereo mini-jack */ @@ -189,8 +189,8 @@ static struct resource dm335evm_snd_resources[] = { }; static struct evm_snd_platform_data dm335evm_snd_data = { - .tx_dma_ch = DAVINCI_DMA_ASP1_TX, - .rx_dma_ch = DAVINCI_DMA_ASP1_RX, + .tx_dma_ch = EDMA_CTLR_CHAN(0, DAVINCI_DMA_ASP1_TX), + .rx_dma_ch = EDMA_CTLR_CHAN(0, DAVINCI_DMA_ASP1_RX), }; static struct platform_device *evm_snd_device; diff --git a/sound/soc/davinci/davinci-pcm.c b/sound/soc/davinci/davinci-pcm.c index 48bd9e2..2a1985c 100644 --- a/sound/soc/davinci/davinci-pcm.c +++ b/sound/soc/davinci/davinci-pcm.c @@ -150,7 +150,7 @@ static int davinci_pcm_dma_request(struct snd_pcm_substream *substream) prtd->master_lch = ret; /* Request parameter RAM reload slot */ - ret = edma_alloc_slot(EDMA_SLOT_ANY); + ret = edma_alloc_slot(EDMA_CTLR(prtd->master_lch), EDMA_SLOT_ANY); if (ret < 0) { edma_free_channel(prtd->master_lch); return ret; @@ -167,8 +167,8 @@ static int davinci_pcm_dma_request(struct snd_pcm_substream *substream) * so davinci_pcm_enqueue_dma() takes less time in IRQ. */ edma_read_slot(prtd->slave_lch, &p_ram); - p_ram.opt |= TCINTEN | EDMA_TCC(prtd->master_lch); - p_ram.link_bcntrld = prtd->slave_lch << 5; + p_ram.opt |= TCINTEN | EDMA_TCC(EDMA_CHAN_SLOT(prtd->master_lch)); + p_ram.link_bcntrld = EDMA_CHAN_SLOT(prtd->slave_lch) << 5; edma_write_slot(prtd->slave_lch, &p_ram); return 0; -- 1.5.6 _______________________________________________ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source