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-rw-r--r--Documentation/devicetree/bindings/sound/samsung-i2s.txt4
-rw-r--r--include/linux/platform_data/asoc-s3c.h1
-rw-r--r--sound/soc/samsung/i2s-regs.h15
-rw-r--r--sound/soc/samsung/i2s.c81
4 files changed, 93 insertions, 8 deletions
diff --git a/Documentation/devicetree/bindings/sound/samsung-i2s.txt b/Documentation/devicetree/bindings/sound/samsung-i2s.txt
index 25a0024..7386d44 100644
--- a/Documentation/devicetree/bindings/sound/samsung-i2s.txt
+++ b/Documentation/devicetree/bindings/sound/samsung-i2s.txt
@@ -6,6 +6,10 @@ Required SoC Specific Properties:
- samsung,s3c6410-i2s: for 8/16/24bit stereo I2S.
- samsung,s5pv210-i2s: for 8/16/24bit multichannel(5.1) I2S with
secondary fifo, s/w reset control and internal mux for root clk src.
+ - samsung,exynos5420-i2s: for 8/16/24bit multichannel(7.1) I2S with
+ secondary fifo, s/w reset control, internal mux for root clk src and
+ TDM support. TDM (Time division multiplexing) is to allow transfer of
+ multiple channel audio data on single data line.
- reg: physical base address of the controller and length of memory mapped
region.
diff --git a/include/linux/platform_data/asoc-s3c.h b/include/linux/platform_data/asoc-s3c.h
index 8827259..9efc04d 100644
--- a/include/linux/platform_data/asoc-s3c.h
+++ b/include/linux/platform_data/asoc-s3c.h
@@ -36,6 +36,7 @@ struct samsung_i2s {
*/
#define QUIRK_NO_MUXPSR (1 << 2)
#define QUIRK_NEED_RSTCLR (1 << 3)
+#define QUIRK_SUPPORTS_TDM (1 << 4)
/* Quirks of the I2S controller */
u32 quirks;
dma_addr_t idma_addr;
diff --git a/sound/soc/samsung/i2s-regs.h b/sound/soc/samsung/i2s-regs.h
index 30513b7..821a502 100644
--- a/sound/soc/samsung/i2s-regs.h
+++ b/sound/soc/samsung/i2s-regs.h
@@ -31,6 +31,10 @@
#define I2SLVL1ADDR 0x34
#define I2SLVL2ADDR 0x38
#define I2SLVL3ADDR 0x3c
+#define I2SSTR1 0x40
+#define I2SVER 0x44
+#define I2SFIC2 0x48
+#define I2STDM 0x4c
#define CON_RSTCLR (1 << 31)
#define CON_FRXOFSTATUS (1 << 26)
@@ -117,6 +121,17 @@
#define MOD_BCLK_MASK 3
#define MOD_8BIT (1 << 0)
+#define EXYNOS5420_MOD_LRP_SHIFT 15
+#define EXYNOS5420_MOD_SDF_SHIFT 6
+#define EXYNOS5420_MOD_RCLK_SHIFT 4
+#define EXYNOS5420_MOD_BCLK_SHIFT 0
+#define EXYNOS5420_MOD_BCLK_64FS 4
+#define EXYNOS5420_MOD_BCLK_96FS 5
+#define EXYNOS5420_MOD_BCLK_128FS 6
+#define EXYNOS5420_MOD_BCLK_192FS 7
+#define EXYNOS5420_MOD_BCLK_256FS 8
+#define EXYNOS5420_MOD_BCLK_MASK 0xf
+
#define MOD_CDCLKCON (1 << 12)
#define PSR_PSREN (1 << 15)
diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index 3b4835a..dd995a7 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -199,7 +199,12 @@ static inline bool is_manager(struct i2s_dai *i2s)
/* Read RCLK of I2S (in multiples of LRCLK) */
static inline unsigned get_rfs(struct i2s_dai *i2s)
{
- u32 rfs = (readl(i2s->addr + I2SMOD) >> MOD_RCLK_SHIFT);
+ u32 rfs;
+
+ if (i2s->quirks & QUIRK_SUPPORTS_TDM)
+ rfs = readl(i2s->addr + I2SMOD) >> EXYNOS5420_MOD_RCLK_SHIFT;
+ else
+ rfs = (readl(i2s->addr + I2SMOD) >> MOD_RCLK_SHIFT);
rfs &= MOD_RCLK_MASK;
switch (rfs) {
@@ -214,8 +219,12 @@ static inline unsigned get_rfs(struct i2s_dai *i2s)
static inline void set_rfs(struct i2s_dai *i2s, unsigned rfs)
{
u32 mod = readl(i2s->addr + I2SMOD);
- int rfs_shift = MOD_RCLK_SHIFT;
+ int rfs_shift;
+ if (i2s->quirks & QUIRK_SUPPORTS_TDM)
+ rfs_shift = EXYNOS5420_MOD_RCLK_SHIFT;
+ else
+ rfs_shift = MOD_RCLK_SHIFT;
mod &= ~(MOD_RCLK_MASK << rfs_shift);
switch (rfs) {
@@ -239,10 +248,22 @@ static inline void set_rfs(struct i2s_dai *i2s, unsigned rfs)
/* Read Bit-Clock of I2S (in multiples of LRCLK) */
static inline unsigned get_bfs(struct i2s_dai *i2s)
{
- u32 bfs = readl(i2s->addr + I2SMOD) >> MOD_BCLK_SHIFT;
- bfs &= MOD_BCLK_MASK;
+ u32 bfs;
+
+ if (i2s->quirks & QUIRK_SUPPORTS_TDM) {
+ bfs = readl(i2s->addr + I2SMOD) >> EXYNOS5420_MOD_BCLK_SHIFT;
+ bfs &= EXYNOS5420_MOD_BCLK_MASK;
+ } else {
+ bfs = readl(i2s->addr + I2SMOD) >> MOD_BCLK_SHIFT;
+ bfs &= MOD_BCLK_MASK;
+ }
switch (bfs) {
+ case 8: return 256;
+ case 7: return 192;
+ case 6: return 128;
+ case 5: return 96;
+ case 4: return 64;
case 3: return 24;
case 2: return 16;
case 1: return 48;
@@ -254,9 +275,22 @@ static inline unsigned get_bfs(struct i2s_dai *i2s)
static inline void set_bfs(struct i2s_dai *i2s, unsigned bfs)
{
u32 mod = readl(i2s->addr + I2SMOD);
- int bfs_shift = MOD_BCLK_SHIFT;
+ int bfs_shift;
+ int tdm = i2s->quirks & QUIRK_SUPPORTS_TDM;
- mod &= ~(MOD_BCLK_MASK << bfs_shift);
+ if (i2s->quirks & QUIRK_SUPPORTS_TDM) {
+ bfs_shift = EXYNOS5420_MOD_BCLK_SHIFT;
+ mod &= ~(EXYNOS5420_MOD_BCLK_MASK << bfs_shift);
+ } else {
+ bfs_shift = MOD_BCLK_SHIFT;
+ mod &= ~(MOD_BCLK_MASK << bfs_shift);
+ }
+
+ /* Non-TDM I2S controllers do not support BCLK > 48 * FS */
+ if (!tdm && bfs > 48) {
+ dev_err(&i2s->pdev->dev, "Unsupported BCLK divider\n");
+ return;
+ }
switch (bfs) {
case 48:
@@ -271,6 +305,21 @@ static inline void set_bfs(struct i2s_dai *i2s, unsigned bfs)
case 16:
mod |= (MOD_BCLK_16FS << bfs_shift);
break;
+ case 64:
+ mod |= (EXYNOS5420_MOD_BCLK_64FS << bfs_shift);
+ break;
+ case 96:
+ mod |= (EXYNOS5420_MOD_BCLK_96FS << bfs_shift);
+ break;
+ case 128:
+ mod |= (EXYNOS5420_MOD_BCLK_128FS << bfs_shift);
+ break;
+ case 192:
+ mod |= (EXYNOS5420_MOD_BCLK_192FS << bfs_shift);
+ break;
+ case 256:
+ mod |= (EXYNOS5420_MOD_BCLK_256FS << bfs_shift);
+ break;
default:
dev_err(&i2s->pdev->dev, "Wrong BCLK Divider!\n");
return;
@@ -496,10 +545,17 @@ static int i2s_set_fmt(struct snd_soc_dai *dai,
{
struct i2s_dai *i2s = to_info(dai);
u32 mod = readl(i2s->addr + I2SMOD);
- int lrp_shift = MOD_LRP_SHIFT, sdf_shift = MOD_SDF_SHIFT;
- int sdf_mask, lrp_rlow;
+ int lrp_shift, sdf_shift, sdf_mask, lrp_rlow;
u32 tmp = 0;
+ if (i2s->quirks & QUIRK_SUPPORTS_TDM) {
+ lrp_shift = EXYNOS5420_MOD_LRP_SHIFT;
+ sdf_shift = EXYNOS5420_MOD_SDF_SHIFT;
+ } else {
+ lrp_shift = MOD_LRP_SHIFT;
+ sdf_shift = MOD_SDF_SHIFT;
+ }
+
sdf_mask = MOD_SDF_MASK << sdf_shift;
lrp_rlow = MOD_LR_RLOW << lrp_shift;
@@ -1253,6 +1309,12 @@ static const struct samsung_i2s_dai_data i2sv5_dai_type = {
.quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR,
};
+static const struct samsung_i2s_dai_data i2sv6_dai_type = {
+ .dai_type = TYPE_PRI,
+ .quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR |
+ QUIRK_SUPPORTS_TDM,
+};
+
static const struct samsung_i2s_dai_data samsung_dai_type_pri = {
.dai_type = TYPE_PRI,
};
@@ -1281,6 +1343,9 @@ static const struct of_device_id exynos_i2s_match[] = {
}, {
.compatible = "samsung,s5pv210-i2s",
.data = &i2sv5_dai_type,
+ }, {
+ .compatible = "samsung,exynos5420-i2s",
+ .data = &i2sv6_dai_type,
},
{},
};
generated by cgit v0.10.2 at 2024-10-31 03:06:44 (GMT)