summaryrefslogtreecommitdiffstats
path: root/sound/soc/codecs/ak4613.c
diff options
context:
space:
mode:
Diffstat (limited to 'sound/soc/codecs/ak4613.c')
-rw-r--r--sound/soc/codecs/ak4613.c377
1 files changed, 306 insertions, 71 deletions
diff --git a/sound/soc/codecs/ak4613.c b/sound/soc/codecs/ak4613.c
index 034195c83bd7..55e773f92122 100644
--- a/sound/soc/codecs/ak4613.c
+++ b/sound/soc/codecs/ak4613.c
@@ -10,11 +10,97 @@
// Based on ak4535.c by Richard Purdie
// Based on wm8753.c by Liam Girdwood
+/*
+ * +-------+
+ * |AK4613 |
+ * SDTO1 <-| |
+ * | |
+ * SDTI1 ->| |
+ * SDTI2 ->| |
+ * SDTI3 ->| |
+ * +-------+
+ *
+ * +---+
+ * clk | |___________________________________________...
+ *
+ * [TDM512]
+ * SDTO1 [L1][R1][L2][R2]
+ * SDTI1 [L1][R1][L2][R2][L3][R3][L4][R4][L5][R5][L6][R6]
+ *
+ * [TDM256]
+ * SDTO1 [L1][R1][L2][R2]
+ * SDTI1 [L1][R1][L2][R2][L3][R3][L4][R4]
+ * SDTI2 [L5][R5][L6][R6]
+ *
+ * [TDM128]
+ * SDTO1 [L1][R1][L2][R2]
+ * SDTI1 [L1][R1][L2][R2]
+ * SDTI2 [L3][R3][L4][R4]
+ * SDTI3 [L5][R5][L6][R6]
+ *
+ * [STEREO]
+ * Playback 2ch : SDTI1
+ * Capture 2ch : SDTO1
+ *
+ * [TDM512]
+ * Playback 12ch : SDTI1
+ * Capture 4ch : SDTO1
+ *
+ * [TDM256]
+ * Playback 12ch : SDTI1 + SDTI2
+ * Playback 8ch : SDTI1
+ * Capture 4ch : SDTO1
+ *
+ * [TDM128]
+ * Playback 12ch : SDTI1 + SDTI2 + SDTI3
+ * Playback 8ch : SDTI1 + SDTI2
+ * Playback 4ch : SDTI1
+ * Capture 4ch : SDTO1
+ *
+ *
+ * !!! NOTE !!!
+ *
+ * Renesas is the only user of ak4613 on upstream so far,
+ * but the chip connection is like below.
+ * Thus, Renesas can't test all connection case.
+ * Tested TDM is very limited.
+ *
+ * +-----+ +-----------+
+ * | SoC | | AK4613 |
+ * | |<-----|SDTO1 IN1|<-- Mic
+ * | | | IN2|
+ * | | | |
+ * | |----->|SDTI1 OUT1|--> Headphone
+ * +-----+ |SDTI2 OUT2|
+ * |SDTI3 OUT3|
+ * | OUT4|
+ * | OUT5|
+ * | OUT6|
+ * +-----------+
+ *
+ * Renesas SoC can handle [2, 6,8] channels.
+ * Ak4613 can handle [2,4, 8,12] channels.
+ *
+ * Because of above HW connection and available channels number,
+ * Renesas could test are ...
+ *
+ * [STEREO] Playback 2ch : SDTI1
+ * Capture 2ch : SDTO1
+ * [TDM256] Playback 8ch : SDTI1 (*)
+ *
+ * (*) it used 8ch data between SoC <-> AK4613 on TDM256 mode,
+ * but could confirm is only first 2ch because only 1
+ * Headphone is connected.
+ *
+ * see
+ * AK4613_ENABLE_TDM_TEST
+ */
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/of_device.h>
+#include <linux/of_graph.h>
#include <linux/module.h>
#include <linux/regmap.h>
#include <sound/soc.h>
@@ -78,29 +164,74 @@
/* OCTRL */
#define OCTRL_MASK (0x3F)
-struct ak4613_formats {
- unsigned int width;
- unsigned int fmt;
-};
+/*
+ * configs
+ *
+ * 0x000000BA
+ *
+ * B : AK4613_CONFIG_SDTI_x
+ * A : AK4613_CONFIG_MODE_x
+ */
+#define AK4613_CONFIG_SET(priv, x) priv->configs |= AK4613_CONFIG_##x
+#define AK4613_CONFIG_GET(priv, x) (priv->configs & AK4613_CONFIG_##x##_MASK)
+
+/*
+ * AK4613_CONFIG_SDTI_x
+ *
+ * It indicates how many SDTIx is connected.
+ */
+#define AK4613_CONFIG_SDTI_MASK (0xF << 4)
+#define AK4613_CONFIG_SDTI(x) (((x) & 0xF) << 4)
+#define AK4613_CONFIG_SDTI_set(priv, x) AK4613_CONFIG_SET(priv, SDTI(x))
+#define AK4613_CONFIG_SDTI_get(priv) ((AK4613_CONFIG_GET(priv, SDTI) >> 4) & 0xF)
+
+/*
+ * AK4613_CONFIG_MODE_x
+ *
+ * Same as Ctrl1 :: TDM1/TDM0
+ * No shift is requested
+ * see
+ * AK4613_CTRL1_TO_MODE()
+ * Table 11/12/13/14
+ */
+#define AK4613_CONFIG_MODE_MASK (0xF)
+#define AK4613_CONFIG_MODE_STEREO (0x0)
+#define AK4613_CONFIG_MODE_TDM512 (0x1)
+#define AK4613_CONFIG_MODE_TDM256 (0x2)
+#define AK4613_CONFIG_MODE_TDM128 (0x3)
+
+/*
+ * !!!! FIXME !!!!
+ *
+ * Because of testable HW limitation, TDM256 8ch TDM was only tested.
+ * This driver uses AK4613_ENABLE_TDM_TEST instead of new DT property so far.
+ * Don't hesitate to update driver, you don't need to care compatible
+ * with Renesas.
+ *
+ * #define AK4613_ENABLE_TDM_TEST
+ */
struct ak4613_interface {
- struct ak4613_formats capture;
- struct ak4613_formats playback;
+ unsigned int width;
+ unsigned int fmt;
+ u8 dif;
};
struct ak4613_priv {
struct mutex lock;
- const struct ak4613_interface *iface;
- struct snd_pcm_hw_constraint_list constraint;
+ struct snd_pcm_hw_constraint_list constraint_rates;
+ struct snd_pcm_hw_constraint_list constraint_channels;
struct work_struct dummy_write_work;
struct snd_soc_component *component;
unsigned int rate;
unsigned int sysclk;
unsigned int fmt;
+ unsigned int configs;
+ int cnt;
+ u8 ctrl1;
u8 oc;
u8 ic;
- int cnt;
};
/*
@@ -137,14 +268,24 @@ static const struct reg_default ak4613_reg[] = {
{ 0x14, 0x00 }, { 0x15, 0x00 }, { 0x16, 0x00 },
};
-#define AUDIO_IFACE_TO_VAL(fmts) ((fmts - ak4613_iface) << 3)
-#define AUDIO_IFACE(b, fmt) { b, SND_SOC_DAIFMT_##fmt }
+/*
+ * CTRL1 register
+ * see
+ * Table 11/12/13/14
+ */
+#define AUDIO_IFACE(_dif, _width, _fmt) \
+ { \
+ .dif = _dif, \
+ .width = _width, \
+ .fmt = SND_SOC_DAIFMT_##_fmt,\
+ }
static const struct ak4613_interface ak4613_iface[] = {
- /* capture */ /* playback */
- /* [0] - [2] are not supported */
- [3] = { AUDIO_IFACE(24, LEFT_J), AUDIO_IFACE(24, LEFT_J) },
- [4] = { AUDIO_IFACE(24, I2S), AUDIO_IFACE(24, I2S) },
+ /* It doesn't support asymmetric format */
+
+ AUDIO_IFACE(0x03, 24, LEFT_J),
+ AUDIO_IFACE(0x04, 24, I2S),
};
+#define AK4613_CTRL1_TO_MODE(priv) ((priv)->ctrl1 >> 6) /* AK4613_CONFIG_MODE_x */
static const struct regmap_config ak4613_regmap_cfg = {
.reg_bits = 8,
@@ -250,13 +391,14 @@ static void ak4613_dai_shutdown(struct snd_pcm_substream *substream,
priv->cnt = 0;
}
if (!priv->cnt)
- priv->iface = NULL;
+ priv->ctrl1 = 0;
mutex_unlock(&priv->lock);
}
static void ak4613_hw_constraints(struct ak4613_priv *priv,
- struct snd_pcm_runtime *runtime)
+ struct snd_pcm_substream *substream)
{
+ struct snd_pcm_runtime *runtime = substream->runtime;
static const unsigned int ak4613_rates[] = {
32000,
44100,
@@ -267,10 +409,36 @@ static void ak4613_hw_constraints(struct ak4613_priv *priv,
176400,
192000,
};
- struct snd_pcm_hw_constraint_list *constraint = &priv->constraint;
+#define AK4613_CHANNEL_2 0
+#define AK4613_CHANNEL_4 1
+#define AK4613_CHANNEL_8 2
+#define AK4613_CHANNEL_12 3
+#define AK4613_CHANNEL_NONE -1
+ static const unsigned int ak4613_channels[] = {
+ [AK4613_CHANNEL_2] = 2,
+ [AK4613_CHANNEL_4] = 4,
+ [AK4613_CHANNEL_8] = 8,
+ [AK4613_CHANNEL_12] = 12,
+ };
+#define MODE_MAX 4
+#define SDTx_MAX 4
+#define MASK(x) (1 << AK4613_CHANNEL_##x)
+ static const int mask_list[MODE_MAX][SDTx_MAX] = {
+ /* SDTO SDTIx1 SDTIx2 SDTIx3 */
+ [AK4613_CONFIG_MODE_STEREO] = { MASK(2), MASK(2), MASK(2), MASK(2)},
+ [AK4613_CONFIG_MODE_TDM512] = { MASK(4), MASK(12), MASK(12), MASK(12)},
+ [AK4613_CONFIG_MODE_TDM256] = { MASK(4), MASK(8), MASK(8)|MASK(12), MASK(8)|MASK(12)},
+ [AK4613_CONFIG_MODE_TDM128] = { MASK(4), MASK(4), MASK(4)|MASK(8), MASK(4)|MASK(8)|MASK(12)},
+ };
+ struct snd_pcm_hw_constraint_list *constraint;
+ unsigned int mask;
+ unsigned int mode;
unsigned int fs;
+ int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
+ int sdti_num;
int i;
+ constraint = &priv->constraint_rates;
constraint->list = ak4613_rates;
constraint->mask = 0;
constraint->count = 0;
@@ -296,6 +464,41 @@ static void ak4613_hw_constraints(struct ak4613_priv *priv,
snd_pcm_hw_constraint_list(runtime, 0,
SNDRV_PCM_HW_PARAM_RATE, constraint);
+
+
+ sdti_num = AK4613_CONFIG_SDTI_get(priv);
+ if (WARN_ON(sdti_num >= SDTx_MAX))
+ return;
+
+ if (priv->cnt) {
+ /*
+ * If it was already working,
+ * the constraint is same as working mode.
+ */
+ mode = AK4613_CTRL1_TO_MODE(priv);
+ mask = 0; /* no default */
+ } else {
+ /*
+ * It is not yet working,
+ * the constraint is based on board configs.
+ * STEREO mask is default
+ */
+ mode = AK4613_CONFIG_GET(priv, MODE);
+ mask = mask_list[AK4613_CONFIG_MODE_STEREO][is_play * sdti_num];
+ }
+
+ if (WARN_ON(mode >= MODE_MAX))
+ return;
+
+ /* add each mode mask */
+ mask |= mask_list[mode][is_play * sdti_num];
+
+ constraint = &priv->constraint_channels;
+ constraint->list = ak4613_channels;
+ constraint->mask = mask;
+ constraint->count = sizeof(ak4613_channels);
+ snd_pcm_hw_constraint_list(runtime, 0,
+ SNDRV_PCM_HW_PARAM_CHANNELS, constraint);
}
static int ak4613_dai_startup(struct snd_pcm_substream *substream,
@@ -304,9 +507,10 @@ static int ak4613_dai_startup(struct snd_pcm_substream *substream,
struct snd_soc_component *component = dai->component;
struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
+ mutex_lock(&priv->lock);
+ ak4613_hw_constraints(priv, substream);
priv->cnt++;
-
- ak4613_hw_constraints(priv, substream->runtime);
+ mutex_unlock(&priv->lock);
return 0;
}
@@ -322,13 +526,13 @@ static int ak4613_dai_set_sysclk(struct snd_soc_dai *codec_dai,
return 0;
}
-static int ak4613_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+static int ak4613_dai_set_fmt(struct snd_soc_dai *dai, unsigned int format)
{
struct snd_soc_component *component = dai->component;
struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
+ unsigned int fmt;
- fmt &= SND_SOC_DAIFMT_FORMAT_MASK;
-
+ fmt = format & SND_SOC_DAIFMT_FORMAT_MASK;
switch (fmt) {
case SND_SOC_DAIFMT_LEFT_J:
case SND_SOC_DAIFMT_I2S:
@@ -338,24 +542,20 @@ static int ak4613_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
return -EINVAL;
}
- return 0;
-}
-
-static bool ak4613_dai_fmt_matching(const struct ak4613_interface *iface,
- int is_play,
- unsigned int fmt, unsigned int width)
-{
- const struct ak4613_formats *fmts;
-
- fmts = (is_play) ? &iface->playback : &iface->capture;
-
- if (fmts->fmt != fmt)
- return false;
-
- if (fmts->width != width)
- return false;
+ fmt = format & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK;
+ switch (fmt) {
+ case SND_SOC_DAIFMT_CBC_CFC:
+ break;
+ default:
+ /*
+ * SUPPORTME
+ *
+ * "clock provider" is not yet supperted
+ */
+ return -EINVAL;
+ }
- return true;
+ return 0;
}
static int ak4613_dai_hw_params(struct snd_pcm_substream *substream,
@@ -364,14 +564,12 @@ static int ak4613_dai_hw_params(struct snd_pcm_substream *substream,
{
struct snd_soc_component *component = dai->component;
struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
- const struct ak4613_interface *iface;
struct device *dev = component->dev;
unsigned int width = params_width(params);
unsigned int fmt = priv->fmt;
unsigned int rate;
- int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
int i, ret;
- u8 fmt_ctrl, ctrl2;
+ u8 ctrl2;
rate = params_rate(params);
switch (rate) {
@@ -397,40 +595,51 @@ static int ak4613_dai_hw_params(struct snd_pcm_substream *substream,
/*
* FIXME
*
- * It doesn't support TDM at this point
+ * It doesn't have full TDM suppert yet
*/
- fmt_ctrl = NO_FMT;
ret = -EINVAL;
- iface = NULL;
mutex_lock(&priv->lock);
- if (priv->iface) {
- if (ak4613_dai_fmt_matching(priv->iface, is_play, fmt, width))
- iface = priv->iface;
+ if (priv->cnt > 1) {
+ /*
+ * If it was already working, use current priv->ctrl1
+ */
+ ret = 0;
} else {
+ /*
+ * It is not yet working,
+ */
+ unsigned int channel = params_channels(params);
+ u8 tdm;
+
+ /* STEREO or TDM */
+ if (channel == 2)
+ tdm = AK4613_CONFIG_MODE_STEREO;
+ else
+ tdm = AK4613_CONFIG_GET(priv, MODE);
+
for (i = ARRAY_SIZE(ak4613_iface) - 1; i >= 0; i--) {
- if (!ak4613_dai_fmt_matching(ak4613_iface + i,
- is_play,
- fmt, width))
- continue;
- iface = ak4613_iface + i;
- break;
+ const struct ak4613_interface *iface = ak4613_iface + i;
+
+ if ((iface->fmt == fmt) && (iface->width == width)) {
+ /*
+ * Ctrl1
+ * | D7 | D6 | D5 | D4 | D3 | D2 | D1 | D0 |
+ * |TDM1|TDM0|DIF2|DIF1|DIF0|ATS1|ATS0|SMUTE|
+ * < tdm > < iface->dif >
+ */
+ priv->ctrl1 = (tdm << 6) | (iface->dif << 3);
+ ret = 0;
+ break;
+ }
}
}
-
- if ((priv->iface == NULL) ||
- (priv->iface == iface)) {
- priv->iface = iface;
- ret = 0;
- }
mutex_unlock(&priv->lock);
if (ret < 0)
goto hw_params_end;
- fmt_ctrl = AUDIO_IFACE_TO_VAL(iface);
-
- snd_soc_component_update_bits(component, CTRL1, FMT_MASK, fmt_ctrl);
+ snd_soc_component_update_bits(component, CTRL1, FMT_MASK, priv->ctrl1);
snd_soc_component_update_bits(component, CTRL2, DFS_MASK, ctrl2);
snd_soc_component_update_bits(component, ICTRL, ICTRL_MASK, priv->ic);
@@ -574,14 +783,14 @@ static struct snd_soc_dai_driver ak4613_dai = {
.playback = {
.stream_name = "Playback",
.channels_min = 2,
- .channels_max = 2,
+ .channels_max = 12,
.rates = AK4613_PCM_RATE,
.formats = AK4613_PCM_FMTBIT,
},
.capture = {
.stream_name = "Capture",
.channels_min = 2,
- .channels_max = 2,
+ .channels_max = 4,
.rates = AK4613_PCM_RATE,
.formats = AK4613_PCM_FMTBIT,
},
@@ -626,6 +835,7 @@ static void ak4613_parse_of(struct ak4613_priv *priv,
{
struct device_node *np = dev->of_node;
char prop[32];
+ int sdti_num;
int i;
/* Input 1 - 2 */
@@ -641,10 +851,32 @@ static void ak4613_parse_of(struct ak4613_priv *priv,
if (!of_get_property(np, prop, NULL))
priv->oc |= 1 << i;
}
+
+ /*
+ * enable TDM256 test
+ *
+ * !!! FIXME !!!
+ *
+ * It should be configured by DT or other way
+ * if it was full supported.
+ * But it is using ifdef style for now for test
+ * purpose.
+ */
+#if defined(AK4613_ENABLE_TDM_TEST)
+ AK4613_CONFIG_SET(priv, MODE_TDM256);
+#endif
+
+ /*
+ * connected STDI
+ */
+ sdti_num = of_graph_get_endpoint_count(np);
+ if (WARN_ON((sdti_num > 3) || (sdti_num < 1)))
+ return;
+
+ AK4613_CONFIG_SDTI_set(priv, sdti_num);
}
-static int ak4613_i2c_probe(struct i2c_client *i2c,
- const struct i2c_device_id *id)
+static int ak4613_i2c_probe(struct i2c_client *i2c)
{
struct device *dev = &i2c->dev;
struct device_node *np = dev->of_node;
@@ -655,8 +887,11 @@ static int ak4613_i2c_probe(struct i2c_client *i2c,
regmap_cfg = NULL;
if (np)
regmap_cfg = of_device_get_match_data(dev);
- else
+ else {
+ const struct i2c_device_id *id =
+ i2c_match_id(ak4613_i2c_id, i2c);
regmap_cfg = (const struct regmap_config *)id->driver_data;
+ }
if (!regmap_cfg)
return -EINVAL;
@@ -667,7 +902,7 @@ static int ak4613_i2c_probe(struct i2c_client *i2c,
ak4613_parse_of(priv, dev);
- priv->iface = NULL;
+ priv->ctrl1 = 0;
priv->cnt = 0;
priv->sysclk = 0;
INIT_WORK(&priv->dummy_write_work, ak4613_dummy_write);
@@ -694,7 +929,7 @@ static struct i2c_driver ak4613_i2c_driver = {
.name = "ak4613-codec",
.of_match_table = ak4613_of_match,
},
- .probe = ak4613_i2c_probe,
+ .probe_new = ak4613_i2c_probe,
.remove = ak4613_i2c_remove,
.id_table = ak4613_i2c_id,
};
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-30 08:47:26 +0100