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Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma

Browse source 
Pull slave-dmaengine update from Vinod Koul:
 "This time we have a new dmaengine driver from the tegra folks.  Also
  we have Guennadi's cleanup of sh drivers which incudes a library for
  sh drivers.  And the usual odd fixes in bunch of drivers and some nice
  cleanup of dw_dmac from Andy."

Fix up conflicts in drivers/mmc/host/sh_mmcif.c

* 'next' of git://git.infradead.org/users/vkoul/slave-dma: (46 commits)
  dmaengine: Cleanup logging messages
  mmc: sh_mmcif: switch to the new DMA channel allocation and configuration
  dma: sh: provide a migration path for slave drivers to stop using .private
  dma: sh: use an integer slave ID to improve API compatibility
  dmaengine: shdma: prepare to stop using struct dma_chan::private
  sh: remove unused DMA device pointer from SIU platform data
  ASoC: siu: don't use DMA device for channel filtering
  dmaengine: shdma: (cosmetic) simplify a static function
  dmaengine: at_hdmac: add a few const qualifiers
  dw_dmac: use 'u32' for LLI structure members, not dma_addr_t
  dw_dmac: mark dwc_dump_lli inline
  dma: mxs-dma: Export missing symbols from mxs-dma.c
  dma: shdma: convert to the shdma base library
  ASoC: fsi: prepare for conversion to the shdma base library
  usb: renesas_usbhs: prepare for conversion to the shdma base library
  ASoC: siu: prepare for conversion to the shdma base library
  serial: sh-sci: prepare for conversion to the shdma base library
  mmc: sh_mobile_sdhi: prepare for conversion to the shdma base library
  mmc: sh_mmcif: remove unneeded struct sh_mmcif_dma, prepare to shdma conversion
  dma: shdma: prepare for conversion to the shdma base library
  ...
This commit is contained in:
Linus Torvalds 2012-07-24 17:12:54 -07:00
commit c511dc1fb6
27 changed files with 4295 additions and 1814 deletions
Download patch file Download diff file Expand all files Collapse all files

88
drivers/mmc/host/sh_mmcif.c
View file

@ -213,8 +213,6 @@ struct sh_mmcif_host {
struct mmc_host *mmc;
struct mmc_request *mrq;
struct platform_device *pd;
struct sh_dmae_slave dma_slave_tx;
struct sh_dmae_slave dma_slave_rx;
struct clk *hclk;
unsigned int clk;
int bus_width;
@ -373,59 +371,69 @@ static void sh_mmcif_start_dma_tx(struct sh_mmcif_host *host)
desc, cookie);
}
static bool sh_mmcif_filter(struct dma_chan *chan, void *arg)
{
dev_dbg(chan->device->dev, "%s: slave data %p\n", __func__, arg);
chan->private = arg;
return true;
}
static void sh_mmcif_request_dma(struct sh_mmcif_host *host,
struct sh_mmcif_plat_data *pdata)
{
struct sh_dmae_slave *tx, *rx;
struct resource *res = platform_get_resource(host->pd, IORESOURCE_MEM, 0);
struct dma_slave_config cfg;
dma_cap_mask_t mask;
int ret;
host->dma_active = false;
if (!pdata)
return;
if (pdata->slave_id_tx <= 0 || pdata->slave_id_rx <= 0)
return;
/* We can only either use DMA for both Tx and Rx or not use it at all */
if (pdata->dma) {
dev_warn(&host->pd->dev,
"Update your platform to use embedded DMA slave IDs\n");
tx = &pdata->dma->chan_priv_tx;
rx = &pdata->dma->chan_priv_rx;
} else {
tx = &host->dma_slave_tx;
tx->slave_id = pdata->slave_id_tx;
rx = &host->dma_slave_rx;
rx->slave_id = pdata->slave_id_rx;
}
if (tx->slave_id > 0 && rx->slave_id > 0) {
dma_cap_mask_t mask;
dma_cap_zero(mask);
dma_cap_set(DMA_SLAVE, mask);
dma_cap_zero(mask);
dma_cap_set(DMA_SLAVE, mask);
host->chan_tx = dma_request_channel(mask, shdma_chan_filter,
(void *)pdata->slave_id_tx);
dev_dbg(&host->pd->dev, "%s: TX: got channel %p\n", __func__,
host->chan_tx);
host->chan_tx = dma_request_channel(mask, sh_mmcif_filter, tx);
dev_dbg(&host->pd->dev, "%s: TX: got channel %p\n", __func__,
host->chan_tx);
if (!host->chan_tx)
return;
if (!host->chan_tx)
return;
cfg.slave_id = pdata->slave_id_tx;
cfg.direction = DMA_MEM_TO_DEV;
cfg.dst_addr = res->start + MMCIF_CE_DATA;
cfg.src_addr = 0;
ret = dmaengine_slave_config(host->chan_tx, &cfg);
if (ret < 0)
goto ecfgtx;
host->chan_rx = dma_request_channel(mask, sh_mmcif_filter, rx);
dev_dbg(&host->pd->dev, "%s: RX: got channel %p\n", __func__,
host->chan_rx);
host->chan_rx = dma_request_channel(mask, shdma_chan_filter,
(void *)pdata->slave_id_rx);
dev_dbg(&host->pd->dev, "%s: RX: got channel %p\n", __func__,
host->chan_rx);
if (!host->chan_rx) {
dma_release_channel(host->chan_tx);
host->chan_tx = NULL;
return;
}
if (!host->chan_rx)
goto erqrx;
init_completion(&host->dma_complete);
}
cfg.slave_id = pdata->slave_id_rx;
cfg.direction = DMA_DEV_TO_MEM;
cfg.dst_addr = 0;
cfg.src_addr = res->start + MMCIF_CE_DATA;
ret = dmaengine_slave_config(host->chan_rx, &cfg);
if (ret < 0)
goto ecfgrx;
init_completion(&host->dma_complete);
return;
ecfgrx:
dma_release_channel(host->chan_rx);
host->chan_rx = NULL;
erqrx:
ecfgtx:
dma_release_channel(host->chan_tx);
host->chan_tx = NULL;
}
static void sh_mmcif_release_dma(struct sh_mmcif_host *host)

8
drivers/mmc/host/sh_mobile_sdhi.c
View file

@ -169,10 +169,10 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev)
mmc_data->get_cd = sh_mobile_sdhi_get_cd;
if (p->dma_slave_tx > 0 && p->dma_slave_rx > 0) {
priv->param_tx.slave_id = p->dma_slave_tx;
priv->param_rx.slave_id = p->dma_slave_rx;
priv->dma_priv.chan_priv_tx = &priv->param_tx;
priv->dma_priv.chan_priv_rx = &priv->param_rx;
priv->param_tx.shdma_slave.slave_id = p->dma_slave_tx;
priv->param_rx.shdma_slave.slave_id = p->dma_slave_rx;
priv->dma_priv.chan_priv_tx = &priv->param_tx.shdma_slave;
priv->dma_priv.chan_priv_rx = &priv->param_rx.shdma_slave;
priv->dma_priv.alignment_shift = 1; /* 2-byte alignment */
mmc_data->dma = &priv->dma_priv;
}