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-rw-r--r--sound/soc/sh/fsi.c912
1 files changed, 608 insertions, 304 deletions
diff --git a/sound/soc/sh/fsi.c b/sound/soc/sh/fsi.c
index ea4a82d0..378cc5b 100644
--- a/sound/soc/sh/fsi.c
+++ b/sound/soc/sh/fsi.c
@@ -13,8 +13,11 @@
*/
#include <linux/delay.h>
+#include <linux/dma-mapping.h>
#include <linux/pm_runtime.h>
#include <linux/io.h>
+#include <linux/scatterlist.h>
+#include <linux/sh_dma.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <sound/soc.h>
@@ -53,6 +56,7 @@
/* DO_FMT */
/* DI_FMT */
+#define CR_BWS_MASK (0x3 << 20) /* FSI2 */
#define CR_BWS_24 (0x0 << 20) /* FSI2 */
#define CR_BWS_16 (0x1 << 20) /* FSI2 */
#define CR_BWS_20 (0x2 << 20) /* FSI2 */
@@ -68,6 +72,15 @@
#define CR_TDM (0x4 << 4)
#define CR_TDM_D (0x5 << 4)
+/* OUT_DMAC */
+/* IN_DMAC */
+#define VDMD_MASK (0x3 << 4)
+#define VDMD_FRONT (0x0 << 4) /* Package in front */
+#define VDMD_BACK (0x1 << 4) /* Package in back */
+#define VDMD_STREAM (0x2 << 4) /* Stream mode(16bit * 2) */
+
+#define DMA_ON (0x1 << 0)
+
/* DOFF_CTL */
/* DIFF_CTL */
#define IRQ_HALF 0x00100000
@@ -116,7 +129,7 @@
#define FSI_FMTS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE)
-typedef int (*set_rate_func)(struct device *dev, int is_porta, int rate, int enable);
+typedef int (*set_rate_func)(struct device *dev, int rate, int enable);
/*
* FSI driver use below type name for variable
@@ -159,22 +172,41 @@ typedef int (*set_rate_func)(struct device *dev, int is_porta, int rate, int ena
* struct
*/
+struct fsi_stream_handler;
struct fsi_stream {
- struct snd_pcm_substream *substream;
+ /*
+ * these are initialized by fsi_stream_init()
+ */
+ struct snd_pcm_substream *substream;
int fifo_sample_capa; /* sample capacity of FSI FIFO */
int buff_sample_capa; /* sample capacity of ALSA buffer */
int buff_sample_pos; /* sample position of ALSA buffer */
int period_samples; /* sample number / 1 period */
int period_pos; /* current period position */
-
+ int sample_width; /* sample width */
int uerr_num;
int oerr_num;
+
+ /*
+ * thse are initialized by fsi_handler_init()
+ */
+ struct fsi_stream_handler *handler;
+ struct fsi_priv *priv;
+
+ /*
+ * these are for DMAEngine
+ */
+ struct dma_chan *chan;
+ struct sh_dmae_slave slave; /* see fsi_handler_init() */
+ struct tasklet_struct tasklet;
+ dma_addr_t dma;
};
struct fsi_priv {
void __iomem *base;
struct fsi_master *master;
+ struct sh_fsi_port_info *info;
struct fsi_stream playback;
struct fsi_stream capture;
@@ -189,6 +221,20 @@ struct fsi_priv {
long rate;
};
+struct fsi_stream_handler {
+ int (*init)(struct fsi_priv *fsi, struct fsi_stream *io);
+ int (*quit)(struct fsi_priv *fsi, struct fsi_stream *io);
+ int (*probe)(struct fsi_priv *fsi, struct fsi_stream *io);
+ int (*transfer)(struct fsi_priv *fsi, struct fsi_stream *io);
+ int (*remove)(struct fsi_priv *fsi, struct fsi_stream *io);
+ void (*start_stop)(struct fsi_priv *fsi, struct fsi_stream *io,
+ int enable);
+};
+#define fsi_stream_handler_call(io, func, args...) \
+ (!(io) ? -ENODEV : \
+ !((io)->handler->func) ? 0 : \
+ (io)->handler->func(args))
+
struct fsi_core {
int ver;
@@ -205,10 +251,11 @@ struct fsi_master {
struct fsi_priv fsia;
struct fsi_priv fsib;
struct fsi_core *core;
- struct sh_fsi_platform_info *info;
spinlock_t lock;
};
+static int fsi_stream_is_play(struct fsi_priv *fsi, struct fsi_stream *io);
+
/*
* basic read write function
*/
@@ -295,6 +342,11 @@ static int fsi_is_spdif(struct fsi_priv *fsi)
return fsi->spdif;
}
+static int fsi_is_play(struct snd_pcm_substream *substream)
+{
+ return substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
+}
+
static struct snd_soc_dai *fsi_get_dai(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
@@ -317,44 +369,25 @@ static struct fsi_priv *fsi_get_priv(struct snd_pcm_substream *substream)
return fsi_get_priv_frm_dai(fsi_get_dai(substream));
}
-static set_rate_func fsi_get_info_set_rate(struct fsi_master *master)
+static set_rate_func fsi_get_info_set_rate(struct fsi_priv *fsi)
{
- if (!master->info)
+ if (!fsi->info)
return NULL;
- return master->info->set_rate;
+ return fsi->info->set_rate;
}
static u32 fsi_get_info_flags(struct fsi_priv *fsi)
{
- int is_porta = fsi_is_port_a(fsi);
- struct fsi_master *master = fsi_get_master(fsi);
-
- if (!master->info)
+ if (!fsi->info)
return 0;
- return is_porta ? master->info->porta_flags :
- master->info->portb_flags;
-}
-
-static inline int fsi_stream_is_play(int stream)
-{
- return stream == SNDRV_PCM_STREAM_PLAYBACK;
-}
-
-static inline int fsi_is_play(struct snd_pcm_substream *substream)
-{
- return fsi_stream_is_play(substream->stream);
+ return fsi->info->flags;
}
-static inline struct fsi_stream *fsi_get_stream(struct fsi_priv *fsi,
- int is_play)
-{
- return is_play ? &fsi->playback : &fsi->capture;
-}
-
-static u32 fsi_get_port_shift(struct fsi_priv *fsi, int is_play)
+static u32 fsi_get_port_shift(struct fsi_priv *fsi, struct fsi_stream *io)
{
+ int is_play = fsi_stream_is_play(fsi, io);
int is_porta = fsi_is_port_a(fsi);
u32 shift;
@@ -376,26 +409,81 @@ static int fsi_sample2frame(struct fsi_priv *fsi, int samples)
return samples / fsi->chan_num;
}
+static int fsi_get_current_fifo_samples(struct fsi_priv *fsi,
+ struct fsi_stream *io)
+{
+ int is_play = fsi_stream_is_play(fsi, io);
+ u32 status;
+ int frames;
+
+ status = is_play ?
+ fsi_reg_read(fsi, DOFF_ST) :
+ fsi_reg_read(fsi, DIFF_ST);
+
+ frames = 0x1ff & (status >> 8);
+
+ return fsi_frame2sample(fsi, frames);
+}
+
+static void fsi_count_fifo_err(struct fsi_priv *fsi)
+{
+ u32 ostatus = fsi_reg_read(fsi, DOFF_ST);
+ u32 istatus = fsi_reg_read(fsi, DIFF_ST);
+
+ if (ostatus & ERR_OVER)
+ fsi->playback.oerr_num++;
+
+ if (ostatus & ERR_UNDER)
+ fsi->playback.uerr_num++;
+
+ if (istatus & ERR_OVER)
+ fsi->capture.oerr_num++;
+
+ if (istatus & ERR_UNDER)
+ fsi->capture.uerr_num++;
+
+ fsi_reg_write(fsi, DOFF_ST, 0);
+ fsi_reg_write(fsi, DIFF_ST, 0);
+}
+
+/*
+ * fsi_stream_xx() function
+ */
+static inline int fsi_stream_is_play(struct fsi_priv *fsi,
+ struct fsi_stream *io)
+{
+ return &fsi->playback == io;
+}
+
+static inline struct fsi_stream *fsi_stream_get(struct fsi_priv *fsi,
+ struct snd_pcm_substream *substream)
+{
+ return fsi_is_play(substream) ? &fsi->playback : &fsi->capture;
+}
+
static int fsi_stream_is_working(struct fsi_priv *fsi,
- int is_play)
+ struct fsi_stream *io)
{
- struct fsi_stream *io = fsi_get_stream(fsi, is_play);
struct fsi_master *master = fsi_get_master(fsi);
unsigned long flags;
int ret;
spin_lock_irqsave(&master->lock, flags);
- ret = !!io->substream;
+ ret = !!(io->substream && io->substream->runtime);
spin_unlock_irqrestore(&master->lock, flags);
return ret;
}
-static void fsi_stream_push(struct fsi_priv *fsi,
- int is_play,
+static struct fsi_priv *fsi_stream_to_priv(struct fsi_stream *io)
+{
+ return io->priv;
+}
+
+static void fsi_stream_init(struct fsi_priv *fsi,
+ struct fsi_stream *io,
struct snd_pcm_substream *substream)
{
- struct fsi_stream *io = fsi_get_stream(fsi, is_play);
struct snd_pcm_runtime *runtime = substream->runtime;
struct fsi_master *master = fsi_get_master(fsi);
unsigned long flags;
@@ -406,14 +494,15 @@ static void fsi_stream_push(struct fsi_priv *fsi,
io->buff_sample_pos = 0;
io->period_samples = fsi_frame2sample(fsi, runtime->period_size);
io->period_pos = 0;
+ io->sample_width = samples_to_bytes(runtime, 1);
io->oerr_num = -1; /* ignore 1st err */
io->uerr_num = -1; /* ignore 1st err */
+ fsi_stream_handler_call(io, init, fsi, io);
spin_unlock_irqrestore(&master->lock, flags);
}
-static void fsi_stream_pop(struct fsi_priv *fsi, int is_play)
+static void fsi_stream_quit(struct fsi_priv *fsi, struct fsi_stream *io)
{
- struct fsi_stream *io = fsi_get_stream(fsi, is_play);
struct snd_soc_dai *dai = fsi_get_dai(io->substream);
struct fsi_master *master = fsi_get_master(fsi);
unsigned long flags;
@@ -426,127 +515,87 @@ static void fsi_stream_pop(struct fsi_priv *fsi, int is_play)
if (io->uerr_num > 0)
dev_err(dai->dev, "under_run = %d\n", io->uerr_num);
+ fsi_stream_handler_call(io, quit, fsi, io);
io->substream = NULL;
io->buff_sample_capa = 0;
io->buff_sample_pos = 0;
io->period_samples = 0;
io->period_pos = 0;
+ io->sample_width = 0;
io->oerr_num = 0;
io->uerr_num = 0;
spin_unlock_irqrestore(&master->lock, flags);
}
-static int fsi_get_current_fifo_samples(struct fsi_priv *fsi, int is_play)
+static int fsi_stream_transfer(struct fsi_stream *io)
{
- u32 status;
- int frames;
-
- status = is_play ?
- fsi_reg_read(fsi, DOFF_ST) :
- fsi_reg_read(fsi, DIFF_ST);
-
- frames = 0x1ff & (status >> 8);
-
- return fsi_frame2sample(fsi, frames);
-}
-
-static void fsi_count_fifo_err(struct fsi_priv *fsi)
-{
- u32 ostatus = fsi_reg_read(fsi, DOFF_ST);
- u32 istatus = fsi_reg_read(fsi, DIFF_ST);
-
- if (ostatus & ERR_OVER)
- fsi->playback.oerr_num++;
-
- if (ostatus & ERR_UNDER)
- fsi->playback.uerr_num++;
-
- if (istatus & ERR_OVER)
- fsi->capture.oerr_num++;
-
- if (istatus & ERR_UNDER)
- fsi->capture.uerr_num++;
+ struct fsi_priv *fsi = fsi_stream_to_priv(io);
+ if (!fsi)
+ return -EIO;
- fsi_reg_write(fsi, DOFF_ST, 0);
- fsi_reg_write(fsi, DIFF_ST, 0);
+ return fsi_stream_handler_call(io, transfer, fsi, io);
}
-/*
- * dma function
- */
+#define fsi_stream_start(fsi, io)\
+ fsi_stream_handler_call(io, start_stop, fsi, io, 1)
-static u8 *fsi_dma_get_area(struct fsi_priv *fsi, int stream)
-{
- int is_play = fsi_stream_is_play(stream);
- struct fsi_stream *io = fsi_get_stream(fsi, is_play);
- struct snd_pcm_runtime *runtime = io->substream->runtime;
+#define fsi_stream_stop(fsi, io)\
+ fsi_stream_handler_call(io, start_stop, fsi, io, 0)
- return runtime->dma_area +
- samples_to_bytes(runtime, io->buff_sample_pos);
-}
-
-static void fsi_dma_soft_push16(struct fsi_priv *fsi, int num)
+static int fsi_stream_probe(struct fsi_priv *fsi)
{
- u16 *start;
- int i;
-
- start = (u16 *)fsi_dma_get_area(fsi, SNDRV_PCM_STREAM_PLAYBACK);
+ struct fsi_stream *io;
+ int ret1, ret2;
- for (i = 0; i < num; i++)
- fsi_reg_write(fsi, DODT, ((u32)*(start + i) << 8));
-}
-
-static void fsi_dma_soft_pop16(struct fsi_priv *fsi, int num)
-{
- u16 *start;
- int i;
+ io = &fsi->playback;
+ ret1 = fsi_stream_handler_call(io, probe, fsi, io);
- start = (u16 *)fsi_dma_get_area(fsi, SNDRV_PCM_STREAM_CAPTURE);
+ io = &fsi->capture;
+ ret2 = fsi_stream_handler_call(io, probe, fsi, io);
+ if (ret1 < 0)
+ return ret1;
+ if (ret2 < 0)
+ return ret2;
- for (i = 0; i < num; i++)
- *(start + i) = (u16)(fsi_reg_read(fsi, DIDT) >> 8);
+ return 0;
}
-static void fsi_dma_soft_push32(struct fsi_priv *fsi, int num)
+static int fsi_stream_remove(struct fsi_priv *fsi)
{
- u32 *start;
- int i;
+ struct fsi_stream *io;
+ int ret1, ret2;
- start = (u32 *)fsi_dma_get_area(fsi, SNDRV_PCM_STREAM_PLAYBACK);
-
-
- for (i = 0; i < num; i++)
- fsi_reg_write(fsi, DODT, *(start + i));
-}
+ io = &fsi->playback;
+ ret1 = fsi_stream_handler_call(io, remove, fsi, io);
-static void fsi_dma_soft_pop32(struct fsi_priv *fsi, int num)
-{
- u32 *start;
- int i;
+ io = &fsi->capture;
+ ret2 = fsi_stream_handler_call(io, remove, fsi, io);
- start = (u32 *)fsi_dma_get_area(fsi, SNDRV_PCM_STREAM_CAPTURE);
+ if (ret1 < 0)
+ return ret1;
+ if (ret2 < 0)
+ return ret2;
- for (i = 0; i < num; i++)
- *(start + i) = fsi_reg_read(fsi, DIDT);
+ return 0;
}
/*
* irq function
*/
-static void fsi_irq_enable(struct fsi_priv *fsi, int is_play)
+static void fsi_irq_enable(struct fsi_priv *fsi, struct fsi_stream *io)
{
- u32 data = AB_IO(1, fsi_get_port_shift(fsi, is_play));
+ u32 data = AB_IO(1, fsi_get_port_shift(fsi, io));
struct fsi_master *master = fsi_get_master(fsi);
fsi_core_mask_set(master, imsk, data, data);
fsi_core_mask_set(master, iemsk, data, data);
}
-static void fsi_irq_disable(struct fsi_priv *fsi, int is_play)
+static void fsi_irq_disable(struct fsi_priv *fsi, struct fsi_stream *io)
{
- u32 data = AB_IO(1, fsi_get_port_shift(fsi, is_play));
+ u32 data = AB_IO(1, fsi_get_port_shift(fsi, io));
struct fsi_master *master = fsi_get_master(fsi);
fsi_core_mask_set(master, imsk, data, 0);
@@ -563,8 +612,8 @@ static void fsi_irq_clear_status(struct fsi_priv *fsi)
u32 data = 0;
struct fsi_master *master = fsi_get_master(fsi);
- data |= AB_IO(1, fsi_get_port_shift(fsi, 0));
- data |= AB_IO(1, fsi_get_port_shift(fsi, 1));
+ data |= AB_IO(1, fsi_get_port_shift(fsi, &fsi->playback));
+ data |= AB_IO(1, fsi_get_port_shift(fsi, &fsi->capture));
/* clear interrupt factor */
fsi_core_mask_set(master, int_st, data, 0);
@@ -600,11 +649,14 @@ static int fsi_set_master_clk(struct device *dev, struct fsi_priv *fsi,
long rate, int enable)
{
struct fsi_master *master = fsi_get_master(fsi);
- set_rate_func set_rate = fsi_get_info_set_rate(master);
+ set_rate_func set_rate = fsi_get_info_set_rate(fsi);
int fsi_ver = master->core->ver;
int ret;
- ret = set_rate(dev, fsi_is_port_a(fsi), rate, enable);
+ if (!set_rate)
+ return 0;
+
+ ret = set_rate(dev, rate, enable);
if (ret < 0) /* error */
return ret;
@@ -671,96 +723,64 @@ static int fsi_set_master_clk(struct device *dev, struct fsi_priv *fsi,
return ret;
}
-#define fsi_port_start(f, i) __fsi_port_clk_ctrl(f, i, 1)
-#define fsi_port_stop(f, i) __fsi_port_clk_ctrl(f, i, 0)
-static void __fsi_port_clk_ctrl(struct fsi_priv *fsi, int is_play, int enable)
+/*
+ * pio data transfer handler
+ */
+static void fsi_pio_push16(struct fsi_priv *fsi, u8 *_buf, int samples)
{
- struct fsi_master *master = fsi_get_master(fsi);
- u32 clk = fsi_is_port_a(fsi) ? CRA : CRB;
+ u16 *buf = (u16 *)_buf;
+ int i;
- if (enable)
- fsi_irq_enable(fsi, is_play);
- else
- fsi_irq_disable(fsi, is_play);
+ for (i = 0; i < samples; i++)
+ fsi_reg_write(fsi, DODT, ((u32)*(buf + i) << 8));
+}
- if (fsi_is_clk_master(fsi))
- fsi_master_mask_set(master, CLK_RST, clk, (enable) ? clk : 0);
+static void fsi_pio_pop16(struct fsi_priv *fsi, u8 *_buf, int samples)
+{
+ u16 *buf = (u16 *)_buf;
+ int i;
+
+ for (i = 0; i < samples; i++)
+ *(buf + i) = (u16)(fsi_reg_read(fsi, DIDT) >> 8);
}
-/*
- * ctrl function
- */
-static void fsi_fifo_init(struct fsi_priv *fsi,
- int is_play,
- struct device *dev)
+static void fsi_pio_push32(struct fsi_priv *fsi, u8 *_buf, int samples)
{
- struct fsi_master *master = fsi_get_master(fsi);
- struct fsi_stream *io = fsi_get_stream(fsi, is_play);
- u32 shift, i;
- int frame_capa;
+ u32 *buf = (u32 *)_buf;
+ int i;
- /* get on-chip RAM capacity */
- shift = fsi_master_read(master, FIFO_SZ);
- shift >>= fsi_get_port_shift(fsi, is_play);
- shift &= FIFO_SZ_MASK;
- frame_capa = 256 << shift;
- dev_dbg(dev, "fifo = %d words\n", frame_capa);
+ for (i = 0; i < samples; i++)
+ fsi_reg_write(fsi, DODT, *(buf + i));
+}
- /*
- * The maximum number of sample data varies depending
- * on the number of channels selected for the format.
- *
- * FIFOs are used in 4-channel units in 3-channel mode
- * and in 8-channel units in 5- to 7-channel mode
- * meaning that more FIFOs than the required size of DPRAM
- * are used.
- *
- * ex) if 256 words of DP-RAM is connected
- * 1 channel: 256 (256 x 1 = 256)
- * 2 channels: 128 (128 x 2 = 256)
- * 3 channels: 64 ( 64 x 3 = 192)
- * 4 channels: 64 ( 64 x 4 = 256)
- * 5 channels: 32 ( 32 x 5 = 160)
- * 6 channels: 32 ( 32 x 6 = 192)
- * 7 channels: 32 ( 32 x 7 = 224)
- * 8 channels: 32 ( 32 x 8 = 256)
- */
- for (i = 1; i < fsi->chan_num; i <<= 1)
- frame_capa >>= 1;
- dev_dbg(dev, "%d channel %d store\n",
- fsi->chan_num, frame_capa);
+static void fsi_pio_pop32(struct fsi_priv *fsi, u8 *_buf, int samples)
+{
+ u32 *buf = (u32 *)_buf;
+ int i;
- io->fifo_sample_capa = fsi_frame2sample(fsi, frame_capa);
+ for (i = 0; i < samples; i++)
+ *(buf + i) = fsi_reg_read(fsi, DIDT);
+}
- /*
- * set interrupt generation factor
- * clear FIFO
- */
- if (is_play) {
- fsi_reg_write(fsi, DOFF_CTL, IRQ_HALF);
- fsi_reg_mask_set(fsi, DOFF_CTL, FIFO_CLR, FIFO_CLR);
- } else {
- fsi_reg_write(fsi, DIFF_CTL, IRQ_HALF);
- fsi_reg_mask_set(fsi, DIFF_CTL, FIFO_CLR, FIFO_CLR);
- }
+static u8 *fsi_pio_get_area(struct fsi_priv *fsi, struct fsi_stream *io)
+{
+ struct snd_pcm_runtime *runtime = io->substream->runtime;
+
+ return runtime->dma_area +
+ samples_to_bytes(runtime, io->buff_sample_pos);
}
-static int fsi_fifo_data_ctrl(struct fsi_priv *fsi, int stream)
+static int fsi_pio_transfer(struct fsi_priv *fsi, struct fsi_stream *io,
+ void (*run16)(struct fsi_priv *fsi, u8 *buf, int samples),
+ void (*run32)(struct fsi_priv *fsi, u8 *buf, int samples),
+ int samples)
{
struct snd_pcm_runtime *runtime;
- struct snd_pcm_substream *substream = NULL;
- int is_play = fsi_stream_is_play(stream);
- struct fsi_stream *io = fsi_get_stream(fsi, is_play);
- int sample_residues;
- int sample_width;
- int samples;
- int samples_max;
+ struct snd_pcm_substream *substream;
+ u8 *buf;
int over_period;
- void (*fn)(struct fsi_priv *fsi, int size);
- if (!fsi ||
- !io->substream ||
- !io->substream->runtime)
+ if (!fsi_stream_is_working(fsi, io))
return -EINVAL;
over_period = 0;
@@ -780,60 +800,19 @@ static int fsi_fifo_data_ctrl(struct fsi_priv *fsi, int stream)
io->buff_sample_pos = 0;
}
- /* get 1 sample data width */
- sample_width = samples_to_bytes(runtime, 1);
+ buf = fsi_pio_get_area(fsi, io);
- /* get number of residue samples */
- sample_residues = io->buff_sample_capa - io->buff_sample_pos;
-
- if (is_play) {
- /*
- * for play-back
- *
- * samples_max : number of FSI fifo free samples space
- * samples : number of ALSA residue samples
- */
- samples_max = io->fifo_sample_capa;
- samples_max -= fsi_get_current_fifo_samples(fsi, is_play);
-
- samples = sample_residues;
-
- switch (sample_width) {
- case 2:
- fn = fsi_dma_soft_push16;
- break;
- case 4:
- fn = fsi_dma_soft_push32;
- break;
- default:
- return -EINVAL;
- }
- } else {
- /*
- * for capture
- *
- * samples_max : number of ALSA free samples space
- * samples : number of samples in FSI fifo
- */
- samples_max = sample_residues;
- samples = fsi_get_current_fifo_samples(fsi, is_play);
-
- switch (sample_width) {
- case 2:
- fn = fsi_dma_soft_pop16;
- break;
- case 4:
- fn = fsi_dma_soft_pop32;
- break;
- default:
- return -EINVAL;
- }
+ switch (io->sample_width) {
+ case 2:
+ run16(fsi, buf, samples);
+ break;
+ case 4:
+ run32(fsi, buf, samples);
+ break;
+ default:
+ return -EINVAL;
}
- samples = min(samples, samples_max);
-
- fn(fsi, samples);
-
/* update buff_sample_pos */
io->buff_sample_pos += samples;
@@ -843,16 +822,66 @@ static int fsi_fifo_data_ctrl(struct fsi_priv *fsi, int stream)
return 0;
}
-static int fsi_data_pop(struct fsi_priv *fsi)
+static int fsi_pio_pop(struct fsi_priv *fsi, struct fsi_stream *io)
+{
+ int sample_residues; /* samples in FSI fifo */
+ int sample_space; /* ALSA free samples space */
+ int samples;
+
+ sample_residues = fsi_get_current_fifo_samples(fsi, io);
+ sample_space = io->buff_sample_capa - io->buff_sample_pos;
+
+ samples = min(sample_residues, sample_space);
+
+ return fsi_pio_transfer(fsi, io,
+ fsi_pio_pop16,
+ fsi_pio_pop32,
+ samples);
+}
+
+static int fsi_pio_push(struct fsi_priv *fsi, struct fsi_stream *io)
{
- return fsi_fifo_data_ctrl(fsi, SNDRV_PCM_STREAM_CAPTURE);
+ int sample_residues; /* ALSA residue samples */
+ int sample_space; /* FSI fifo free samples space */
+ int samples;
+
+ sample_residues = io->buff_sample_capa - io->buff_sample_pos;
+ sample_space = io->fifo_sample_capa -
+ fsi_get_current_fifo_samples(fsi, io);
+
+ samples = min(sample_residues, sample_space);
+
+ return fsi_pio_transfer(fsi, io,
+ fsi_pio_push16,
+ fsi_pio_push32,
+ samples);
}
-static int fsi_data_push(struct fsi_priv *fsi)
+static void fsi_pio_start_stop(struct fsi_priv *fsi, struct fsi_stream *io,
+ int enable)
{
- return fsi_fifo_data_ctrl(fsi, SNDRV_PCM_STREAM_PLAYBACK);
+ struct fsi_master *master = fsi_get_master(fsi);
+ u32 clk = fsi_is_port_a(fsi) ? CRA : CRB;
+
+ if (enable)
+ fsi_irq_enable(fsi, io);
+ else
+ fsi_irq_disable(fsi, io);
+
+ if (fsi_is_clk_master(fsi))
+ fsi_master_mask_set(master, CLK_RST, clk, (enable) ? clk : 0);
}
+static struct fsi_stream_handler fsi_pio_push_handler = {
+ .transfer = fsi_pio_push,
+ .start_stop = fsi_pio_start_stop,
+};
+
+static struct fsi_stream_handler fsi_pio_pop_handler = {
+ .transfer = fsi_pio_pop,
+ .start_stop = fsi_pio_start_stop,
+};
+
static irqreturn_t fsi_interrupt(int irq, void *data)
{
struct fsi_master *master = data;
@@ -863,13 +892,13 @@ static irqreturn_t fsi_interrupt(int irq, void *data)
fsi_master_mask_set(master, SOFT_RST, IR, IR);
if (int_st & AB_IO(1, AO_SHIFT))
- fsi_data_push(&master->fsia);
+ fsi_stream_transfer(&master->fsia.playback);
if (int_st & AB_IO(1, BO_SHIFT))
- fsi_data_push(&master->fsib);
+ fsi_stream_transfer(&master->fsib.playback);
if (int_st & AB_IO(1, AI_SHIFT))
- fsi_data_pop(&master->fsia);
+ fsi_stream_transfer(&master->fsia.capture);
if (int_st & AB_IO(1, BI_SHIFT))
- fsi_data_pop(&master->fsib);
+ fsi_stream_transfer(&master->fsib.capture);
fsi_count_fifo_err(&master->fsia);
fsi_count_fifo_err(&master->fsib);
@@ -881,11 +910,271 @@ static irqreturn_t fsi_interrupt(int irq, void *data)
}
/*
+ * dma data transfer handler
+ */
+static int fsi_dma_init(struct fsi_priv *fsi, struct fsi_stream *io)
+{
+ struct snd_pcm_runtime *runtime = io->substream->runtime;
+ struct snd_soc_dai *dai = fsi_get_dai(io->substream);
+ enum dma_data_direction dir = fsi_stream_is_play(fsi, io) ?
+ DMA_TO_DEVICE : DMA_FROM_DEVICE;
+
+ io->dma = dma_map_single(dai->dev, runtime->dma_area,
+ snd_pcm_lib_buffer_bytes(io->substream), dir);
+ return 0;
+}
+
+static int fsi_dma_quit(struct fsi_priv *fsi, struct fsi_stream *io)
+{
+ struct snd_soc_dai *dai = fsi_get_dai(io->substream);
+ enum dma_data_direction dir = fsi_stream_is_play(fsi, io) ?
+ DMA_TO_DEVICE : DMA_FROM_DEVICE;
+
+ dma_unmap_single(dai->dev, io->dma,
+ snd_pcm_lib_buffer_bytes(io->substream), dir);
+ return 0;
+}
+
+static void fsi_dma_complete(void *data)
+{
+ struct fsi_stream *io = (struct fsi_stream *)data;
+ struct fsi_priv *fsi = fsi_stream_to_priv(io);
+ struct snd_pcm_runtime *runtime = io->substream->runtime;
+ struct snd_soc_dai *dai = fsi_get_dai(io->substream);
+ enum dma_data_direction dir = fsi_stream_is_play(fsi, io) ?
+ DMA_TO_DEVICE : DMA_FROM_DEVICE;
+
+ dma_sync_single_for_cpu(dai->dev, io->dma,
+ samples_to_bytes(runtime, io->period_samples), dir);
+
+ io->buff_sample_pos += io->period_samples;
+ io->period_pos++;
+
+ if (io->period_pos >= runtime->periods) {
+ io->period_pos = 0;
+ io->buff_sample_pos = 0;
+ }
+
+ fsi_count_fifo_err(fsi);
+ fsi_stream_transfer(io);
+
+ snd_pcm_period_elapsed(io->substream);
+}
+
+static dma_addr_t fsi_dma_get_area(struct fsi_stream *io)
+{
+ struct snd_pcm_runtime *runtime = io->substream->runtime;
+
+ return io->dma + samples_to_bytes(runtime, io->buff_sample_pos);
+}
+
+static void fsi_dma_do_tasklet(unsigned long data)
+{
+ struct fsi_stream *io = (struct fsi_stream *)data;
+ struct fsi_priv *fsi = fsi_stream_to_priv(io);
+ struct dma_chan *chan;
+ struct snd_soc_dai *dai;
+ struct dma_async_tx_descriptor *desc;
+ struct scatterlist sg;
+ struct snd_pcm_runtime *runtime;
+ enum dma_data_direction dir;
+ dma_cookie_t cookie;
+ int is_play = fsi_stream_is_play(fsi, io);
+ int len;
+ dma_addr_t buf;
+
+ if (!fsi_stream_is_working(fsi, io))
+ return;
+
+ dai = fsi_get_dai(io->substream);
+ chan = io->chan;
+ runtime = io->substream->runtime;
+ dir = is_play ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
+ len = samples_to_bytes(runtime, io->period_samples);
+ buf = fsi_dma_get_area(io);
+
+ dma_sync_single_for_device(dai->dev, io->dma, len, dir);
+
+ sg_init_table(&sg, 1);
+ sg_set_page(&sg, pfn_to_page(PFN_DOWN(buf)),
+ len , offset_in_page(buf));
+ sg_dma_address(&sg) = buf;
+ sg_dma_len(&sg) = len;
+
+ desc = chan->device->device_prep_slave_sg(chan, &sg, 1, dir,
+ DMA_PREP_INTERRUPT |
+ DMA_CTRL_ACK);
+ if (!desc) {
+ dev_err(dai->dev, "device_prep_slave_sg() fail\n");
+ return;
+ }
+
+ desc->callback = fsi_dma_complete;
+ desc->callback_param = io;
+
+ cookie = desc->tx_submit(desc);
+ if (cookie < 0) {
+ dev_err(dai->dev, "tx_submit() fail\n");
+ return;
+ }
+
+ dma_async_issue_pending(chan);
+
+ /*
+ * FIXME
+ *
+ * In DMAEngine case, codec and FSI cannot be started simultaneously
+ * since FSI is using tasklet.
+ * Therefore, in capture case, probably FSI FIFO will have got
+ * overflow error in this point.
+ * in that case, DMA cannot start transfer until error was cleared.
+ */
+ if (!is_play) {
+ if (ERR_OVER & fsi_reg_read(fsi, DIFF_ST)) {
+ fsi_reg_mask_set(fsi, DIFF_CTL, FIFO_CLR, FIFO_CLR);
+ fsi_reg_write(fsi, DIFF_ST, 0);
+ }
+ }
+}
+
+static bool fsi_dma_filter(struct dma_chan *chan, void *param)
+{
+ struct sh_dmae_slave *slave = param;
+
+ chan->private = slave;
+
+ return true;
+}
+
+static int fsi_dma_transfer(struct fsi_priv *fsi, struct fsi_stream *io)
+{
+ tasklet_schedule(&io->tasklet);
+
+ return 0;
+}
+
+static void fsi_dma_push_start_stop(struct fsi_priv *fsi, struct fsi_stream *io,
+ int start)
+{
+ u32 bws;
+ u32 dma;
+
+ switch (io->sample_width * start) {
+ case 2:
+ bws = CR_BWS_16;
+ dma = VDMD_STREAM | DMA_ON;
+ break;
+ case 4:
+ bws = CR_BWS_24;
+ dma = VDMD_BACK | DMA_ON;
+ break;
+ default:
+ bws = 0;
+ dma = 0;
+ }
+
+ fsi_reg_mask_set(fsi, DO_FMT, CR_BWS_MASK, bws);
+ fsi_reg_write(fsi, OUT_DMAC, dma);
+}
+
+static int fsi_dma_probe(struct fsi_priv *fsi, struct fsi_stream *io)
+{
+ dma_cap_mask_t mask;
+
+ dma_cap_zero(mask);
+ dma_cap_set(DMA_SLAVE, mask);
+
+ io->chan = dma_request_channel(mask, fsi_dma_filter, &io->slave);
+ if (!io->chan)
+ return -EIO;
+
+ tasklet_init(&io->tasklet, fsi_dma_do_tasklet, (unsigned long)io);
+
+ return 0;
+}
+
+static int fsi_dma_remove(struct fsi_priv *fsi, struct fsi_stream *io)
+{
+ tasklet_kill(&io->tasklet);
+
+ fsi_stream_stop(fsi, io);
+
+ if (io->chan)
+ dma_release_channel(io->chan);
+
+ io->chan = NULL;
+ return 0;
+}
+
+static struct fsi_stream_handler fsi_dma_push_handler = {
+ .init = fsi_dma_init,
+ .quit = fsi_dma_quit,
+ .probe = fsi_dma_probe,
+ .transfer = fsi_dma_transfer,
+ .remove = fsi_dma_remove,
+ .start_stop = fsi_dma_push_start_stop,
+};
+
+/*
* dai ops
*/
+static void fsi_fifo_init(struct fsi_priv *fsi,
+ struct fsi_stream *io,
+ struct device *dev)
+{
+ struct fsi_master *master = fsi_get_master(fsi);
+ int is_play = fsi_stream_is_play(fsi, io);
+ u32 shift, i;
+ int frame_capa;
+
+ /* get on-chip RAM capacity */
+ shift = fsi_master_read(master, FIFO_SZ);
+ shift >>= fsi_get_port_shift(fsi, io);
+ shift &= FIFO_SZ_MASK;
+ frame_capa = 256 << shift;
+ dev_dbg(dev, "fifo = %d words\n", frame_capa);
+
+ /*
+ * The maximum number of sample data varies depending
+ * on the number of channels selected for the format.
+ *
+ * FIFOs are used in 4-channel units in 3-channel mode
+ * and in 8-channel units in 5- to 7-channel mode
+ * meaning that more FIFOs than the required size of DPRAM
+ * are used.
+ *
+ * ex) if 256 words of DP-RAM is connected
+ * 1 channel: 256 (256 x 1 = 256)
+ * 2 channels: 128 (128 x 2 = 256)
+ * 3 channels: 64 ( 64 x 3 = 192)
+ * 4 channels: 64 ( 64 x 4 = 256)
+ * 5 channels: 32 ( 32 x 5 = 160)
+ * 6 channels: 32 ( 32 x 6 = 192)
+ * 7 channels: 32 ( 32 x 7 = 224)
+ * 8 channels: 32 ( 32 x 8 = 256)
+ */
+ for (i = 1; i < fsi->chan_num; i <<= 1)
+ frame_capa >>= 1;
+ dev_dbg(dev, "%d channel %d store\n",
+ fsi->chan_num, frame_capa);
+
+ io->fifo_sample_capa = fsi_frame2sample(fsi, frame_capa);
+
+ /*
+ * set interrupt generation factor
+ * clear FIFO
+ */
+ if (is_play) {
+ fsi_reg_write(fsi, DOFF_CTL, IRQ_HALF);
+ fsi_reg_mask_set(fsi, DOFF_CTL, FIFO_CLR, FIFO_CLR);
+ } else {
+ fsi_reg_write(fsi, DIFF_CTL, IRQ_HALF);
+ fsi_reg_mask_set(fsi, DIFF_CTL, FIFO_CLR, FIFO_CLR);
+ }
+}
static int fsi_hw_startup(struct fsi_priv *fsi,
- int is_play,
+ struct fsi_stream *io,
struct device *dev)
{
struct fsi_master *master = fsi_get_master(fsi);
@@ -934,17 +1223,16 @@ static int fsi_hw_startup(struct fsi_priv *fsi,
}
/* irq clear */
- fsi_irq_disable(fsi, is_play);
+ fsi_irq_disable(fsi, io);
fsi_irq_clear_status(fsi);
/* fifo init */
- fsi_fifo_init(fsi, is_play, dev);
+ fsi_fifo_init(fsi, io, dev);
return 0;
}
static void fsi_hw_shutdown(struct fsi_priv *fsi,
- int is_play,
struct device *dev)
{
if (fsi_is_clk_master(fsi))
@@ -955,18 +1243,16 @@ static int fsi_dai_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct fsi_priv *fsi = fsi_get_priv(substream);
- int is_play = fsi_is_play(substream);
- return fsi_hw_startup(fsi, is_play, dai->dev);
+ return fsi_hw_startup(fsi, fsi_stream_get(fsi, substream), dai->dev);
}
static void fsi_dai_shutdown(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct fsi_priv *fsi = fsi_get_priv(substream);
- int is_play = fsi_is_play(substream);
- fsi_hw_shutdown(fsi, is_play, dai->dev);
+ fsi_hw_shutdown(fsi, dai->dev);
fsi->rate = 0;
}
@@ -974,18 +1260,19 @@ static int fsi_dai_trigger(struct snd_pcm_substream *substream, int cmd,
struct snd_soc_dai *dai)
{
struct fsi_priv *fsi = fsi_get_priv(substream);
- int is_play = fsi_is_play(substream);
+ struct fsi_stream *io = fsi_stream_get(fsi, substream);
int ret = 0;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
- fsi_stream_push(fsi, is_play, substream);
- ret = is_play ? fsi_data_push(fsi) : fsi_data_pop(fsi);
- fsi_port_start(fsi, is_play);
+ fsi_stream_init(fsi, io, substream);
+ ret = fsi_stream_transfer(io);
+ if (0 == ret)
+ fsi_stream_start(fsi, io);
break;
case SNDRV_PCM_TRIGGER_STOP:
- fsi_port_stop(fsi, is_play);
- fsi_stream_pop(fsi, is_play);
+ fsi_stream_stop(fsi, io);
+ fsi_stream_quit(fsi, io);
break;
}
@@ -1036,8 +1323,7 @@ static int fsi_set_fmt_spdif(struct fsi_priv *fsi)
static int fsi_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
struct fsi_priv *fsi = fsi_get_priv_frm_dai(dai);
- struct fsi_master *master = fsi_get_master(fsi);
- set_rate_func set_rate = fsi_get_info_set_rate(master);
+ set_rate_func set_rate = fsi_get_info_set_rate(fsi);
u32 flags = fsi_get_info_flags(fsi);
int ret;
@@ -1151,7 +1437,7 @@ static int fsi_hw_free(struct snd_pcm_substream *substream)
static snd_pcm_uframes_t fsi_pointer(struct snd_pcm_substream *substream)
{
struct fsi_priv *fsi = fsi_get_priv(substream);
- struct fsi_stream *io = fsi_get_stream(fsi, fsi_is_play(substream));
+ struct fsi_stream *io = fsi_stream_get(fsi, substream);
return fsi_sample2frame(fsi, io->buff_sample_pos);
}
@@ -1239,11 +1525,24 @@ static struct snd_soc_platform_driver fsi_soc_platform = {
/*
* platform function
*/
+static void fsi_handler_init(struct fsi_priv *fsi)
+{
+ fsi->playback.handler = &fsi_pio_push_handler; /* default PIO */
+ fsi->playback.priv = fsi;
+ fsi->capture.handler = &fsi_pio_pop_handler; /* default PIO */
+ fsi->capture.priv = fsi;
+
+ if (fsi->info->tx_id) {
+ fsi->playback.slave.slave_id = fsi->info->tx_id;
+ fsi->playback.handler = &fsi_dma_push_handler;
+ }
+}
static int fsi_probe(struct platform_device *pdev)
{
struct fsi_master *master;
const struct platform_device_id *id_entry;
+ struct sh_fsi_platform_info *info = pdev->dev.platform_data;
struct resource *res;
unsigned int irq;
int ret;
@@ -1278,17 +1577,30 @@ static int fsi_probe(struct platform_device *pdev)
/* master setting */
master->irq = irq;
- master->info = pdev->dev.platform_data;
master->core = (struct fsi_core *)id_entry->driver_data;
spin_lock_init(&master->lock);
/* FSI A setting */
master->fsia.base = master->base;
master->fsia.master = master;
+ master->fsia.info = &info->port_a;
+ fsi_handler_init(&master->fsia);
+ ret = fsi_stream_probe(&master->fsia);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "FSIA stream probe failed\n");
+ goto exit_iounmap;
+ }
/* FSI B setting */
master->fsib.base = master->base + 0x40;
master->fsib.master = master;
+ master->fsib.info = &info->port_b;
+ fsi_handler_init(&master->fsib);
+ ret = fsi_stream_probe(&master->fsib);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "FSIB stream probe failed\n");
+ goto exit_fsia;
+ }
pm_runtime_enable(&pdev->dev);
dev_set_drvdata(&pdev->dev, master);
@@ -1297,7 +1609,7 @@ static int fsi_probe(struct platform_device *pdev)
id_entry->name, master);
if (ret) {
dev_err(&pdev->dev, "irq request err\n");
- goto exit_iounmap;
+ goto exit_fsib;
}
ret = snd_soc_register_platform(&pdev->dev, &fsi_soc_platform);
@@ -1319,6 +1631,10 @@ exit_snd_soc:
snd_soc_unregister_platform(&pdev->dev);
exit_free_irq:
free_irq(irq, master);
+exit_fsib:
+ fsi_stream_remove(&master->fsib);
+exit_fsia:
+ fsi_stream_remove(&master->fsia);
exit_iounmap:
iounmap(master->base);
pm_runtime_disable(&pdev->dev);
@@ -1341,6 +1657,9 @@ static int fsi_remove(struct platform_device *pdev)
snd_soc_unregister_dais(&pdev->dev, ARRAY_SIZE(fsi_soc_dai));
snd_soc_unregister_platform(&pdev->dev);
+ fsi_stream_remove(&master->fsia);
+ fsi_stream_remove(&master->fsib);
+
iounmap(master->base);
kfree(master);
@@ -1348,30 +1667,29 @@ static int fsi_remove(struct platform_device *pdev)
}
static void __fsi_suspend(struct fsi_priv *fsi,
- int is_play,
+ struct fsi_stream *io,
struct device *dev)
{
- if (!fsi_stream_is_working(fsi, is_play))
+ if (!fsi_stream_is_working(fsi, io))
return;
- fsi_port_stop(fsi, is_play);
- fsi_hw_shutdown(fsi, is_play, dev);
+ fsi_stream_stop(fsi, io);
+ fsi_hw_shutdown(fsi, dev);
}
static void __fsi_resume(struct fsi_priv *fsi,
- int is_play,
+ struct fsi_stream *io,
struct device *dev)
{
- if (!fsi_stream_is_working(fsi, is_play))
+ if (!fsi_stream_is_working(fsi, io))
return;
- fsi_hw_startup(fsi, is_play, dev);
+ fsi_hw_startup(fsi, io, dev);
if (fsi_is_clk_master(fsi) && fsi->rate)
fsi_set_master_clk(dev, fsi, fsi->rate, 1);
- fsi_port_start(fsi, is_play);
-
+ fsi_stream_start(fsi, io);
}
static int fsi_suspend(struct device *dev)
@@ -1380,11 +1698,11 @@ static int fsi_suspend(struct device *dev)
struct fsi_priv *fsia = &master->fsia;
struct fsi_priv *fsib = &master->fsib;
- __fsi_suspend(fsia, 1, dev);
- __fsi_suspend(fsia, 0, dev);
+ __fsi_suspend(fsia, &fsia->playback, dev);
+ __fsi_suspend(fsia, &fsia->capture, dev);
- __fsi_suspend(fsib, 1, dev);
- __fsi_suspend(fsib, 0, dev);
+ __fsi_suspend(fsib, &fsib->playback, dev);
+ __fsi_suspend(fsib, &fsib->capture, dev);
return 0;
}
@@ -1395,32 +1713,18 @@ static int fsi_resume(struct device *dev)
struct fsi_priv *fsia = &master->fsia;
struct fsi_priv *fsib = &master->fsib;
- __fsi_resume(fsia, 1, dev);
- __fsi_resume(fsia, 0, dev);
+ __fsi_resume(fsia, &fsia->playback, dev);
+ __fsi_resume(fsia, &fsia->capture, dev);
- __fsi_resume(fsib, 1, dev);
- __fsi_resume(fsib, 0, dev);
+ __fsi_resume(fsib, &fsib->playback, dev);
+ __fsi_resume(fsib, &fsib->capture, dev);
return 0;
}
-static int fsi_runtime_nop(struct device *dev)
-{
- /* Runtime PM callback shared between ->runtime_suspend()
- * and ->runtime_resume(). Simply returns success.
- *
- * This driver re-initializes all registers after
- * pm_runtime_get_sync() anyway so there is no need
- * to save and restore registers here.
- */
- return 0;
-}
-
static struct dev_pm_ops fsi_pm_ops = {
.suspend = fsi_suspend,
.resume = fsi_resume,
- .runtime_suspend = fsi_runtime_nop,
- .runtime_resume = fsi_runtime_nop,
};
static struct fsi_core fsi1_core = {