/* PDMACHCR */
#define PDMACHCR_DE (1 << 0)
+
+struct rsnd_dmaen {
+ struct dma_chan *chan;
+};
+
+struct rsnd_dmapp {
+ int dmapp_id;
+ u32 chcr;
+};
+
+struct rsnd_dma {
+ struct rsnd_mod mod;
+ dma_addr_t src_addr;
+ dma_addr_t dst_addr;
+ union {
+ struct rsnd_dmaen en;
+ struct rsnd_dmapp pp;
+ } dma;
+};
+
struct rsnd_dma_ctrl {
void __iomem *base;
+ int dmaen_num;
int dmapp_num;
};
-struct rsnd_dma_ops {
- char *name;
- void (*start)(struct rsnd_dai_stream *io, struct rsnd_dma *dma);
- void (*stop)(struct rsnd_dai_stream *io, struct rsnd_dma *dma);
- int (*init)(struct rsnd_dai_stream *io, struct rsnd_dma *dma, int id,
- struct rsnd_mod *mod_from, struct rsnd_mod *mod_to);
- void (*quit)(struct rsnd_dai_stream *io, struct rsnd_dma *dma);
-};
-
#define rsnd_priv_to_dmac(p) ((struct rsnd_dma_ctrl *)(p)->dma)
+#define rsnd_mod_to_dma(_mod) container_of((_mod), struct rsnd_dma, mod)
+#define rsnd_dma_to_dmaen(dma) (&(dma)->dma.en)
+#define rsnd_dma_to_dmapp(dma) (&(dma)->dma.pp)
/*
* Audio DMAC
rsnd_mod_interrupt(mod, __rsnd_dmaen_complete);
}
-static void rsnd_dmaen_stop(struct rsnd_dai_stream *io, struct rsnd_dma *dma)
+static int rsnd_dmaen_stop(struct rsnd_mod *mod,
+ struct rsnd_dai_stream *io,
+ struct rsnd_priv *priv)
{
+ struct rsnd_dma *dma = rsnd_mod_to_dma(mod);
struct rsnd_dmaen *dmaen = rsnd_dma_to_dmaen(dma);
dmaengine_terminate_all(dmaen->chan);
+
+ return 0;
}
-static void rsnd_dmaen_start(struct rsnd_dai_stream *io, struct rsnd_dma *dma)
+static int rsnd_dmaen_start(struct rsnd_mod *mod,
+ struct rsnd_dai_stream *io,
+ struct rsnd_priv *priv)
{
+ struct rsnd_dma *dma = rsnd_mod_to_dma(mod);
struct rsnd_dmaen *dmaen = rsnd_dma_to_dmaen(dma);
- struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
- struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
struct snd_pcm_substream *substream = io->substream;
struct device *dev = rsnd_priv_to_dev(priv);
struct dma_async_tx_descriptor *desc;
if (!desc) {
dev_err(dev, "dmaengine_prep_slave_sg() fail\n");
- return;
+ return -EIO;
}
desc->callback = rsnd_dmaen_complete;
- desc->callback_param = mod;
+ desc->callback_param = rsnd_mod_get(dma);
if (dmaengine_submit(desc) < 0) {
dev_err(dev, "dmaengine_submit() fail\n");
- return;
+ return -EIO;
}
dma_async_issue_pending(dmaen->chan);
+
+ return 0;
}
struct dma_chan *rsnd_dma_request_channel(struct device_node *of_node,
return rsnd_mod_dma_req(io, mod_to);
}
-static int rsnd_dmaen_init(struct rsnd_dai_stream *io,
+static int rsnd_dmaen_remove(struct rsnd_mod *mod,
+ struct rsnd_dai_stream *io,
+ struct rsnd_priv *priv)
+{
+ struct rsnd_dma *dma = rsnd_mod_to_dma(mod);
+ struct rsnd_dmaen *dmaen = rsnd_dma_to_dmaen(dma);
+
+ if (dmaen->chan)
+ dma_release_channel(dmaen->chan);
+
+ dmaen->chan = NULL;
+
+ return 0;
+}
+
+static int rsnd_dmaen_attach(struct rsnd_dai_stream *io,
struct rsnd_dma *dma, int id,
struct rsnd_mod *mod_from, struct rsnd_mod *mod_to)
{
+ struct rsnd_mod *mod = rsnd_mod_get(dma);
struct rsnd_dmaen *dmaen = rsnd_dma_to_dmaen(dma);
struct rsnd_priv *priv = rsnd_io_to_priv(io);
+ struct rsnd_dma_ctrl *dmac = rsnd_priv_to_dmac(priv);
struct device *dev = rsnd_priv_to_dev(priv);
struct dma_slave_config cfg = {};
int is_play = rsnd_io_is_play(io);
cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
- dev_dbg(dev, "%s %pad -> %pad\n",
- dma->ops->name,
+ dev_dbg(dev, "%s[%d] %pad -> %pad\n",
+ rsnd_mod_name(mod), rsnd_mod_id(mod),
&cfg.src_addr, &cfg.dst_addr);
ret = dmaengine_slave_config(dmaen->chan, &cfg);
if (ret < 0)
- goto rsnd_dma_init_err;
+ goto rsnd_dma_attach_err;
+
+ dmac->dmaen_num++;
return 0;
-rsnd_dma_init_err:
- rsnd_dma_quit(io, dma);
+rsnd_dma_attach_err:
+ rsnd_dmaen_remove(mod, io, priv);
rsnd_dma_channel_err:
/*
return -EAGAIN;
}
-static void rsnd_dmaen_quit(struct rsnd_dai_stream *io, struct rsnd_dma *dma)
-{
- struct rsnd_dmaen *dmaen = rsnd_dma_to_dmaen(dma);
-
- if (dmaen->chan)
- dma_release_channel(dmaen->chan);
-
- dmaen->chan = NULL;
-}
-
-static struct rsnd_dma_ops rsnd_dmaen_ops = {
+static struct rsnd_mod_ops rsnd_dmaen_ops = {
.name = "audmac",
.start = rsnd_dmaen_start,
.stop = rsnd_dmaen_stop,
- .init = rsnd_dmaen_init,
- .quit = rsnd_dmaen_quit,
+ .remove = rsnd_dmaen_remove,
};
/*
(0x10 * rsnd_dma_to_dmapp(dma)->dmapp_id))
static void rsnd_dmapp_write(struct rsnd_dma *dma, u32 data, u32 reg)
{
- struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
+ struct rsnd_mod *mod = rsnd_mod_get(dma);
struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
struct rsnd_dma_ctrl *dmac = rsnd_priv_to_dmac(priv);
struct device *dev = rsnd_priv_to_dev(priv);
static u32 rsnd_dmapp_read(struct rsnd_dma *dma, u32 reg)
{
- struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
+ struct rsnd_mod *mod = rsnd_mod_get(dma);
struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
struct rsnd_dma_ctrl *dmac = rsnd_priv_to_dmac(priv);
return ioread32(rsnd_dmapp_addr(dmac, dma, reg));
}
-static void rsnd_dmapp_stop(struct rsnd_dai_stream *io, struct rsnd_dma *dma)
+static int rsnd_dmapp_stop(struct rsnd_mod *mod,
+ struct rsnd_dai_stream *io,
+ struct rsnd_priv *priv)
{
+ struct rsnd_dma *dma = rsnd_mod_to_dma(mod);
int i;
rsnd_dmapp_write(dma, 0, PDMACHCR);
for (i = 0; i < 1024; i++) {
if (0 == rsnd_dmapp_read(dma, PDMACHCR))
- return;
+ return 0;
udelay(1);
}
+
+ return -EIO;
}
-static void rsnd_dmapp_start(struct rsnd_dai_stream *io, struct rsnd_dma *dma)
+static int rsnd_dmapp_start(struct rsnd_mod *mod,
+ struct rsnd_dai_stream *io,
+ struct rsnd_priv *priv)
{
+ struct rsnd_dma *dma = rsnd_mod_to_dma(mod);
struct rsnd_dmapp *dmapp = rsnd_dma_to_dmapp(dma);
rsnd_dmapp_write(dma, dma->src_addr, PDMASAR);
rsnd_dmapp_write(dma, dma->dst_addr, PDMADAR);
rsnd_dmapp_write(dma, dmapp->chcr, PDMACHCR);
+
+ return 0;
}
-static int rsnd_dmapp_init(struct rsnd_dai_stream *io,
- struct rsnd_dma *dma, int id,
- struct rsnd_mod *mod_from, struct rsnd_mod *mod_to)
+static int rsnd_dmapp_attach(struct rsnd_dai_stream *io,
+ struct rsnd_dma *dma, int id,
+ struct rsnd_mod *mod_from, struct rsnd_mod *mod_to)
{
struct rsnd_dmapp *dmapp = rsnd_dma_to_dmapp(dma);
struct rsnd_priv *priv = rsnd_io_to_priv(io);
dmac->dmapp_num++;
- rsnd_dmapp_stop(io, dma);
-
dev_dbg(dev, "id/src/dst/chcr = %d/%pad/%pad/%08x\n",
dmapp->dmapp_id, &dma->src_addr, &dma->dst_addr, dmapp->chcr);
return 0;
}
-static struct rsnd_dma_ops rsnd_dmapp_ops = {
+static struct rsnd_mod_ops rsnd_dmapp_ops = {
.name = "audmac-pp",
.start = rsnd_dmapp_start,
.stop = rsnd_dmapp_stop,
- .init = rsnd_dmapp_init,
.quit = rsnd_dmapp_stop,
};
}
#define MOD_MAX (RSND_MOD_MAX + 1) /* +Memory */
-static void rsnd_dma_of_path(struct rsnd_dma *dma,
+static void rsnd_dma_of_path(struct rsnd_mod *this,
struct rsnd_dai_stream *io,
int is_play,
struct rsnd_mod **mod_from,
struct rsnd_mod **mod_to)
{
- struct rsnd_mod *this = rsnd_dma_to_mod(dma);
struct rsnd_mod *ssi = rsnd_io_to_mod_ssi(io);
struct rsnd_mod *src = rsnd_io_to_mod_src(io);
struct rsnd_mod *ctu = rsnd_io_to_mod_ctu(io);
struct rsnd_mod *mod_start, *mod_end;
struct rsnd_priv *priv = rsnd_mod_to_priv(this);
struct device *dev = rsnd_priv_to_dev(priv);
- int nr, i;
+ int nr, i, idx;
if (!ssi)
return;
mod_start = (is_play) ? NULL : ssi;
mod_end = (is_play) ? ssi : NULL;
- mod[0] = mod_start;
+ idx = 0;
+ mod[idx++] = mod_start;
for (i = 1; i < nr; i++) {
if (src) {
- mod[i] = src;
+ mod[idx++] = src;
src = NULL;
} else if (ctu) {
- mod[i] = ctu;
+ mod[idx++] = ctu;
ctu = NULL;
} else if (mix) {
- mod[i] = mix;
+ mod[idx++] = mix;
mix = NULL;
} else if (dvc) {
- mod[i] = dvc;
+ mod[idx++] = dvc;
dvc = NULL;
}
}
- mod[i] = mod_end;
+ mod[idx] = mod_end;
/*
* | SSI | SRC |
* !is_play | * | o |
*/
if ((this == ssi) == (is_play)) {
- *mod_from = mod[nr - 1];
- *mod_to = mod[nr];
+ *mod_from = mod[idx - 1];
+ *mod_to = mod[idx];
} else {
*mod_from = mod[0];
*mod_to = mod[1];
dev_dbg(dev, "module connection (this is %s[%d])\n",
rsnd_mod_name(this), rsnd_mod_id(this));
- for (i = 0; i <= nr; i++) {
+ for (i = 0; i <= idx; i++) {
dev_dbg(dev, " %s[%d]%s\n",
rsnd_mod_name(mod[i]), rsnd_mod_id(mod[i]),
(mod[i] == *mod_from) ? " from" :
}
}
-void rsnd_dma_stop(struct rsnd_dai_stream *io, struct rsnd_dma *dma)
-{
- dma->ops->stop(io, dma);
-}
-
-void rsnd_dma_start(struct rsnd_dai_stream *io, struct rsnd_dma *dma)
-{
- dma->ops->start(io, dma);
-}
-
-void rsnd_dma_quit(struct rsnd_dai_stream *io, struct rsnd_dma *dma)
-{
- struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
- struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
- struct rsnd_dma_ctrl *dmac = rsnd_priv_to_dmac(priv);
-
- if (!dmac)
- return;
-
- dma->ops->quit(io, dma);
-}
-
-int rsnd_dma_init(struct rsnd_dai_stream *io, struct rsnd_dma *dma, int id)
+struct rsnd_mod *rsnd_dma_attach(struct rsnd_dai_stream *io,
+ struct rsnd_mod *mod, int id)
{
+ struct rsnd_mod *dma_mod;
struct rsnd_mod *mod_from = NULL;
struct rsnd_mod *mod_to = NULL;
struct rsnd_priv *priv = rsnd_io_to_priv(io);
struct rsnd_dma_ctrl *dmac = rsnd_priv_to_dmac(priv);
+ struct rsnd_dma *dma;
struct device *dev = rsnd_priv_to_dev(priv);
+ struct rsnd_mod_ops *ops;
+ enum rsnd_mod_type type;
+ int (*attach)(struct rsnd_dai_stream *io, struct rsnd_dma *dma, int id,
+ struct rsnd_mod *mod_from, struct rsnd_mod *mod_to);
int is_play = rsnd_io_is_play(io);
+ int ret, dma_id;
/*
* DMA failed. try to PIO mode
* rsnd_rdai_continuance_probe()
*/
if (!dmac)
- return -EAGAIN;
+ return ERR_PTR(-EAGAIN);
- rsnd_dma_of_path(dma, io, is_play, &mod_from, &mod_to);
+ dma = devm_kzalloc(dev, sizeof(*dma), GFP_KERNEL);
+ if (!dma)
+ return ERR_PTR(-ENOMEM);
+
+ rsnd_dma_of_path(mod, io, is_play, &mod_from, &mod_to);
dma->src_addr = rsnd_dma_addr(io, mod_from, is_play, 1);
dma->dst_addr = rsnd_dma_addr(io, mod_to, is_play, 0);
/* for Gen2 */
- if (mod_from && mod_to)
- dma->ops = &rsnd_dmapp_ops;
- else
- dma->ops = &rsnd_dmaen_ops;
+ if (mod_from && mod_to) {
+ ops = &rsnd_dmapp_ops;
+ attach = rsnd_dmapp_attach;
+ dma_id = dmac->dmapp_num;
+ type = RSND_MOD_AUDMAPP;
+ } else {
+ ops = &rsnd_dmaen_ops;
+ attach = rsnd_dmaen_attach;
+ dma_id = dmac->dmaen_num;
+ type = RSND_MOD_AUDMA;
+ }
/* for Gen1, overwrite */
- if (rsnd_is_gen1(priv))
- dma->ops = &rsnd_dmaen_ops;
+ if (rsnd_is_gen1(priv)) {
+ ops = &rsnd_dmaen_ops;
+ attach = rsnd_dmaen_attach;
+ dma_id = dmac->dmaen_num;
+ type = RSND_MOD_AUDMA;
+ }
+
+ dma_mod = rsnd_mod_get(dma);
- dev_dbg(dev, "%s %s[%d] -> %s[%d]\n",
- dma->ops->name,
+ dev_dbg(dev, "%s[%d] %s[%d] -> %s[%d]\n",
+ rsnd_mod_name(dma_mod), rsnd_mod_id(dma_mod),
rsnd_mod_name(mod_from), rsnd_mod_id(mod_from),
rsnd_mod_name(mod_to), rsnd_mod_id(mod_to));
- return dma->ops->init(io, dma, id, mod_from, mod_to);
+ ret = rsnd_mod_init(priv, dma_mod,
+ ops, NULL, type, dma_id);
+ if (ret < 0)
+ return ERR_PTR(ret);
+
+ ret = attach(io, dma, id, mod_from, mod_to);
+ if (ret < 0)
+ return ERR_PTR(ret);
+
+ ret = rsnd_dai_connect(dma_mod, io, type);
+ if (ret < 0)
+ return ERR_PTR(ret);
+
+ return rsnd_mod_get(dma);
}
int rsnd_dma_probe(struct platform_device *pdev,
projects / karo-tx-linux.git / blobdiff