diff options
author | Maxime Ripard <maxime.ripard@free-electrons.com> | 2014-11-17 16:42:17 +0300 |
---|---|---|
committer | Vinod Koul <vinod.koul@intel.com> | 2014-12-22 09:58:59 +0300 |
commit | 7b350ab0fa338dae86a62d83efee21fab39fcdc6 (patch) | |
tree | f87536654c84d719867b9fb36daa231badb6a68f /drivers/dma | |
parent | 502c2ef26dba04128af260de0ca3e2940e57fc7a (diff) | |
download | linux-7b350ab0fa338dae86a62d83efee21fab39fcdc6.tar.xz |
dmaengine: imx-sdma: Split device_control
Split the device_control callback of the Freescale IMX SDMA driver to make use
of the newly introduced callbacks, that will eventually be used to retrieve
slave capabilities.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma')
-rw-r--r-- | drivers/dma/imx-sdma.c | 66 |
1 files changed, 30 insertions, 36 deletions
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c index d0df198f62e9..1748a4bd475f 100644 --- a/drivers/dma/imx-sdma.c +++ b/drivers/dma/imx-sdma.c @@ -830,20 +830,29 @@ static int sdma_load_context(struct sdma_channel *sdmac) return ret; } -static void sdma_disable_channel(struct sdma_channel *sdmac) +static struct sdma_channel *to_sdma_chan(struct dma_chan *chan) +{ + return container_of(chan, struct sdma_channel, chan); +} + +static int sdma_disable_channel(struct dma_chan *chan) { + struct sdma_channel *sdmac = to_sdma_chan(chan); struct sdma_engine *sdma = sdmac->sdma; int channel = sdmac->channel; writel_relaxed(BIT(channel), sdma->regs + SDMA_H_STATSTOP); sdmac->status = DMA_ERROR; + + return 0; } -static int sdma_config_channel(struct sdma_channel *sdmac) +static int sdma_config_channel(struct dma_chan *chan) { + struct sdma_channel *sdmac = to_sdma_chan(chan); int ret; - sdma_disable_channel(sdmac); + sdma_disable_channel(chan); sdmac->event_mask[0] = 0; sdmac->event_mask[1] = 0; @@ -935,11 +944,6 @@ out: return ret; } -static struct sdma_channel *to_sdma_chan(struct dma_chan *chan) -{ - return container_of(chan, struct sdma_channel, chan); -} - static dma_cookie_t sdma_tx_submit(struct dma_async_tx_descriptor *tx) { unsigned long flags; @@ -1004,7 +1008,7 @@ static void sdma_free_chan_resources(struct dma_chan *chan) struct sdma_channel *sdmac = to_sdma_chan(chan); struct sdma_engine *sdma = sdmac->sdma; - sdma_disable_channel(sdmac); + sdma_disable_channel(chan); if (sdmac->event_id0) sdma_event_disable(sdmac, sdmac->event_id0); @@ -1203,35 +1207,24 @@ err_out: return NULL; } -static int sdma_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd, - unsigned long arg) +static int sdma_config(struct dma_chan *chan, + struct dma_slave_config *dmaengine_cfg) { struct sdma_channel *sdmac = to_sdma_chan(chan); - struct dma_slave_config *dmaengine_cfg = (void *)arg; - - switch (cmd) { - case DMA_TERMINATE_ALL: - sdma_disable_channel(sdmac); - return 0; - case DMA_SLAVE_CONFIG: - if (dmaengine_cfg->direction == DMA_DEV_TO_MEM) { - sdmac->per_address = dmaengine_cfg->src_addr; - sdmac->watermark_level = dmaengine_cfg->src_maxburst * - dmaengine_cfg->src_addr_width; - sdmac->word_size = dmaengine_cfg->src_addr_width; - } else { - sdmac->per_address = dmaengine_cfg->dst_addr; - sdmac->watermark_level = dmaengine_cfg->dst_maxburst * - dmaengine_cfg->dst_addr_width; - sdmac->word_size = dmaengine_cfg->dst_addr_width; - } - sdmac->direction = dmaengine_cfg->direction; - return sdma_config_channel(sdmac); - default: - return -ENOSYS; - } - return -EINVAL; + if (dmaengine_cfg->direction == DMA_DEV_TO_MEM) { + sdmac->per_address = dmaengine_cfg->src_addr; + sdmac->watermark_level = dmaengine_cfg->src_maxburst * + dmaengine_cfg->src_addr_width; + sdmac->word_size = dmaengine_cfg->src_addr_width; + } else { + sdmac->per_address = dmaengine_cfg->dst_addr; + sdmac->watermark_level = dmaengine_cfg->dst_maxburst * + dmaengine_cfg->dst_addr_width; + sdmac->word_size = dmaengine_cfg->dst_addr_width; + } + sdmac->direction = dmaengine_cfg->direction; + return sdma_config_channel(chan); } static enum dma_status sdma_tx_status(struct dma_chan *chan, @@ -1600,7 +1593,8 @@ static int sdma_probe(struct platform_device *pdev) sdma->dma_device.device_tx_status = sdma_tx_status; sdma->dma_device.device_prep_slave_sg = sdma_prep_slave_sg; sdma->dma_device.device_prep_dma_cyclic = sdma_prep_dma_cyclic; - sdma->dma_device.device_control = sdma_control; + sdma->dma_device.device_config = sdma_config; + sdma->dma_device.device_terminate_all = sdma_disable_channel; sdma->dma_device.device_issue_pending = sdma_issue_pending; sdma->dma_device.dev->dma_parms = &sdma->dma_parms; dma_set_max_seg_size(sdma->dma_device.dev, 65535); |