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-rw-r--r--sound/soc/sh/fsi.c177
1 files changed, 143 insertions, 34 deletions
diff --git a/sound/soc/sh/fsi.c b/sound/soc/sh/fsi.c
index e52a95d44a6b..7cee22515d9d 100644
--- a/sound/soc/sh/fsi.c
+++ b/sound/soc/sh/fsi.c
@@ -132,6 +132,25 @@
typedef int (*set_rate_func)(struct device *dev, int rate, int enable);
/*
+ * bus options
+ *
+ * 0x000000BA
+ *
+ * A : sample widtht 16bit setting
+ * B : sample widtht 24bit setting
+ */
+
+#define SHIFT_16DATA 0
+#define SHIFT_24DATA 4
+
+#define PACKAGE_24BITBUS_BACK 0
+#define PACKAGE_24BITBUS_FRONT 1
+#define PACKAGE_16BITBUS_STREAM 2
+
+#define BUSOP_SET(s, a) ((a) << SHIFT_ ## s ## DATA)
+#define BUSOP_GET(s, a) (((a) >> SHIFT_ ## s ## DATA) & 0xF)
+
+/*
* FSI driver use below type name for variable
*
* xxx_num : number of data
@@ -189,6 +208,11 @@ struct fsi_stream {
int oerr_num;
/*
+ * bus options
+ */
+ u32 bus_option;
+
+ /*
* thse are initialized by fsi_handler_init()
*/
struct fsi_stream_handler *handler;
@@ -498,6 +522,7 @@ static void fsi_stream_init(struct fsi_priv *fsi,
io->period_samples = fsi_frame2sample(fsi, runtime->period_size);
io->period_pos = 0;
io->sample_width = samples_to_bytes(runtime, 1);
+ io->bus_option = 0;
io->oerr_num = -1; /* ignore 1st err */
io->uerr_num = -1; /* ignore 1st err */
fsi_stream_handler_call(io, init, fsi, io);
@@ -525,6 +550,7 @@ static void fsi_stream_quit(struct fsi_priv *fsi, struct fsi_stream *io)
io->period_samples = 0;
io->period_pos = 0;
io->sample_width = 0;
+ io->bus_option = 0;
io->oerr_num = 0;
io->uerr_num = 0;
spin_unlock_irqrestore(&master->lock, flags);
@@ -584,6 +610,53 @@ static int fsi_stream_remove(struct fsi_priv *fsi)
}
/*
+ * format/bus/dma setting
+ */
+static void fsi_format_bus_setup(struct fsi_priv *fsi, struct fsi_stream *io,
+ u32 bus, struct device *dev)
+{
+ struct fsi_master *master = fsi_get_master(fsi);
+ int is_play = fsi_stream_is_play(fsi, io);
+ u32 fmt = fsi->fmt;
+
+ if (fsi_version(master) >= 2) {
+ u32 dma = 0;
+
+ /*
+ * FSI2 needs DMA/Bus setting
+ */
+ switch (bus) {
+ case PACKAGE_24BITBUS_FRONT:
+ fmt |= CR_BWS_24;
+ dma |= VDMD_FRONT;
+ dev_dbg(dev, "24bit bus / package in front\n");
+ break;
+ case PACKAGE_16BITBUS_STREAM:
+ fmt |= CR_BWS_16;
+ dma |= VDMD_STREAM;
+ dev_dbg(dev, "16bit bus / stream mode\n");
+ break;
+ case PACKAGE_24BITBUS_BACK:
+ default:
+ fmt |= CR_BWS_24;
+ dma |= VDMD_BACK;
+ dev_dbg(dev, "24bit bus / package in back\n");
+ break;
+ }
+
+ if (is_play)
+ fsi_reg_write(fsi, OUT_DMAC, dma);
+ else
+ fsi_reg_write(fsi, IN_DMAC, dma);
+ }
+
+ if (is_play)
+ fsi_reg_write(fsi, DO_FMT, fmt);
+ else
+ fsi_reg_write(fsi, DI_FMT, fmt);
+}
+
+/*
* irq function
*/
@@ -718,11 +791,26 @@ static int fsi_set_master_clk(struct device *dev, struct fsi_priv *fsi,
*/
static void fsi_pio_push16(struct fsi_priv *fsi, u8 *_buf, int samples)
{
- u16 *buf = (u16 *)_buf;
+ u32 enable_stream = fsi_get_info_flags(fsi) & SH_FSI_ENABLE_STREAM_MODE;
int i;
- for (i = 0; i < samples; i++)
- fsi_reg_write(fsi, DODT, ((u32)*(buf + i) << 8));
+ if (enable_stream) {
+ /*
+ * stream mode
+ * see
+ * fsi_pio_push_init()
+ */
+ u32 *buf = (u32 *)_buf;
+
+ for (i = 0; i < samples / 2; i++)
+ fsi_reg_write(fsi, DODT, buf[i]);
+ } else {
+ /* normal mode */
+ u16 *buf = (u16 *)_buf;
+
+ for (i = 0; i < samples; i++)
+ fsi_reg_write(fsi, DODT, ((u32)*(buf + i) << 8));
+ }
}
static void fsi_pio_pop16(struct fsi_priv *fsi, u8 *_buf, int samples)
@@ -862,12 +950,44 @@ static void fsi_pio_start_stop(struct fsi_priv *fsi, struct fsi_stream *io,
fsi_master_mask_set(master, CLK_RST, clk, (enable) ? clk : 0);
}
+static int fsi_pio_push_init(struct fsi_priv *fsi, struct fsi_stream *io)
+{
+ u32 enable_stream = fsi_get_info_flags(fsi) & SH_FSI_ENABLE_STREAM_MODE;
+
+ /*
+ * we can use 16bit stream mode
+ * when "playback" and "16bit data"
+ * and platform allows "stream mode"
+ * see
+ * fsi_pio_push16()
+ */
+ if (enable_stream)
+ io->bus_option = BUSOP_SET(24, PACKAGE_24BITBUS_BACK) |
+ BUSOP_SET(16, PACKAGE_16BITBUS_STREAM);
+ else
+ io->bus_option = BUSOP_SET(24, PACKAGE_24BITBUS_BACK) |
+ BUSOP_SET(16, PACKAGE_24BITBUS_BACK);
+ return 0;
+}
+
+static int fsi_pio_pop_init(struct fsi_priv *fsi, struct fsi_stream *io)
+{
+ /*
+ * always 24bit bus, package back when "capture"
+ */
+ io->bus_option = BUSOP_SET(24, PACKAGE_24BITBUS_BACK) |
+ BUSOP_SET(16, PACKAGE_24BITBUS_BACK);
+ return 0;
+}
+
static struct fsi_stream_handler fsi_pio_push_handler = {
+ .init = fsi_pio_push_init,
.transfer = fsi_pio_push,
.start_stop = fsi_pio_start_stop,
};
static struct fsi_stream_handler fsi_pio_pop_handler = {
+ .init = fsi_pio_pop_init,
.transfer = fsi_pio_pop,
.start_stop = fsi_pio_start_stop,
};
@@ -909,6 +1029,13 @@ static int fsi_dma_init(struct fsi_priv *fsi, struct fsi_stream *io)
enum dma_data_direction dir = fsi_stream_is_play(fsi, io) ?
DMA_TO_DEVICE : DMA_FROM_DEVICE;
+ /*
+ * 24bit data : 24bit bus / package in back
+ * 16bit data : 16bit bus / stream mode
+ */
+ io->bus_option = BUSOP_SET(24, PACKAGE_24BITBUS_BACK) |
+ BUSOP_SET(16, PACKAGE_16BITBUS_STREAM);
+
io->dma = dma_map_single(dai->dev, runtime->dma_area,
snd_pcm_lib_buffer_bytes(io->substream), dir);
return 0;
@@ -1045,25 +1172,9 @@ static int fsi_dma_transfer(struct fsi_priv *fsi, struct fsi_stream *io)
static void fsi_dma_push_start_stop(struct fsi_priv *fsi, struct fsi_stream *io,
int start)
{
- u32 bws;
- u32 dma;
+ u32 enable = start ? DMA_ON : 0;
- 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);
+ fsi_reg_mask_set(fsi, OUT_DMAC, DMA_ON, enable);
}
static int fsi_dma_probe(struct fsi_priv *fsi, struct fsi_stream *io)
@@ -1166,7 +1277,6 @@ static int fsi_hw_startup(struct fsi_priv *fsi,
struct fsi_stream *io,
struct device *dev)
{
- struct fsi_master *master = fsi_get_master(fsi);
u32 flags = fsi_get_info_flags(fsi);
u32 data = 0;
@@ -1189,10 +1299,6 @@ static int fsi_hw_startup(struct fsi_priv *fsi,
fsi_reg_write(fsi, CKG2, data);
- /* set format */
- fsi_reg_write(fsi, DO_FMT, fsi->fmt);
- fsi_reg_write(fsi, DI_FMT, fsi->fmt);
-
/* spdif ? */
if (fsi_is_spdif(fsi)) {
fsi_spdif_clk_ctrl(fsi, 1);
@@ -1200,15 +1306,18 @@ static int fsi_hw_startup(struct fsi_priv *fsi,
}
/*
- * FIXME
- *
- * FSI driver assumed that data package is in-back.
- * FSI2 chip can select it.
+ * get bus settings
*/
- if (fsi_version(master) >= 2) {
- fsi_reg_write(fsi, OUT_DMAC, VDMD_BACK);
- fsi_reg_write(fsi, IN_DMAC, VDMD_BACK);
+ data = 0;
+ switch (io->sample_width) {
+ case 2:
+ data = BUSOP_GET(16, io->bus_option);
+ break;
+ case 4:
+ data = BUSOP_GET(24, io->bus_option);
+ break;
}
+ fsi_format_bus_setup(fsi, io, data, dev);
/* irq clear */
fsi_irq_disable(fsi, io);
@@ -1295,7 +1404,7 @@ static int fsi_set_fmt_spdif(struct fsi_priv *fsi)
if (fsi_version(master) < 2)
return -EINVAL;
- fsi->fmt = CR_BWS_16 | CR_DTMD_SPDIF_PCM | CR_PCM;
+ fsi->fmt = CR_DTMD_SPDIF_PCM | CR_PCM;
fsi->chan_num = 2;
fsi->spdif = 1;
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-31 06:56:06 +0000