Previously, the DAI template was used directly, which lead to
fun bugs such as "why is my channels_max changing?" when one
instantiated more than one i2s_tdm IP block in a device tree.
This change makes it so that we instead duplicate the template
struct, and then use that.
Fixes: 081068fd6414 ("ASoC: rockchip: add support for i2s-tdm controller")
Signed-off-by: Nicolas Frattaroli <frattaroli.nicolas@xxxxxxxxx>
---
Changes in v3:
- constify the i2s_tdm_dai struct
- remove remaining direct i2s_tdm_dai uses
- move symmetric_rate setting to _init_dai
- store pointer to dai struct in rk_i2s_tdm_dev struct
Changes in v2:
- remove accidental whitespace changes
sound/soc/rockchip/rockchip_i2s_tdm.c | 52 ++++++++++++++++-----------
1 file changed, 31 insertions(+), 21 deletions(-)
diff --git a/sound/soc/rockchip/rockchip_i2s_tdm.c b/sound/soc/rockchip/rockchip_i2s_tdm.c
index 17b9b287853a..5f9cb5c4c7f0 100644
--- a/sound/soc/rockchip/rockchip_i2s_tdm.c
+++ b/sound/soc/rockchip/rockchip_i2s_tdm.c
@@ -95,6 +95,7 @@ struct rk_i2s_tdm_dev {
spinlock_t lock; /* xfer lock */
bool has_playback;
bool has_capture;
+ struct snd_soc_dai_driver *dai;
};
static int to_ch_num(unsigned int val)
@@ -1310,19 +1311,14 @@ static const struct of_device_id rockchip_i2s_tdm_match[] = {
{},
};
-static struct snd_soc_dai_driver i2s_tdm_dai = {
+static const struct snd_soc_dai_driver i2s_tdm_dai = {
.probe = rockchip_i2s_tdm_dai_probe,
- .playback = {
- .stream_name = "Playback",
- },
- .capture = {
- .stream_name = "Capture",
- },
.ops = &rockchip_i2s_tdm_dai_ops,
};
-static void rockchip_i2s_tdm_init_dai(struct rk_i2s_tdm_dev *i2s_tdm)
+static int rockchip_i2s_tdm_init_dai(struct rk_i2s_tdm_dev *i2s_tdm)
{
+ struct snd_soc_dai_driver *dai;
struct property *dma_names;
const char *dma_name;
u64 formats = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE |
@@ -1337,19 +1333,33 @@ static void rockchip_i2s_tdm_init_dai(struct rk_i2s_tdm_dev *i2s_tdm)
i2s_tdm->has_capture = true;
}
+ dai = devm_kmemdup(i2s_tdm->dev, &i2s_tdm_dai,
+ sizeof(*dai), GFP_KERNEL);
+ if (!dai)
+ return -ENOMEM;
+
if (i2s_tdm->has_playback) {
- i2s_tdm_dai.playback.channels_min = 2;
- i2s_tdm_dai.playback.channels_max = 8;
- i2s_tdm_dai.playback.rates = SNDRV_PCM_RATE_8000_192000;
- i2s_tdm_dai.playback.formats = formats;
+ dai->playback.stream_name = "Playback";
+ dai->playback.channels_min = 2;
+ dai->playback.channels_max = 8;
+ dai->playback.rates = SNDRV_PCM_RATE_8000_192000;
+ dai->playback.formats = formats;
}
if (i2s_tdm->has_capture) {
- i2s_tdm_dai.capture.channels_min = 2;
- i2s_tdm_dai.capture.channels_max = 8;
- i2s_tdm_dai.capture.rates = SNDRV_PCM_RATE_8000_192000;
- i2s_tdm_dai.capture.formats = formats;
+ dai->capture.stream_name = "Capture";
+ dai->capture.channels_min = 2;
+ dai->capture.channels_max = 8;
+ dai->capture.rates = SNDRV_PCM_RATE_8000_192000;
+ dai->capture.formats = formats;
}
+
+ if (i2s_tdm->clk_trcm != TRCM_TXRX)
+ dai->symmetric_rate = 1;
+
+ i2s_tdm->dai = dai;
+
+ return 0;
}
static int rockchip_i2s_tdm_path_check(struct rk_i2s_tdm_dev *i2s_tdm,
@@ -1541,8 +1551,6 @@ static int rockchip_i2s_tdm_probe(struct platform_device *pdev)
spin_lock_init(&i2s_tdm->lock);
i2s_tdm->soc_data = (struct rk_i2s_soc_data *)of_id->data;
- rockchip_i2s_tdm_init_dai(i2s_tdm);
-
i2s_tdm->frame_width = 64;
i2s_tdm->clk_trcm = TRCM_TXRX;
@@ -1555,8 +1563,10 @@ static int rockchip_i2s_tdm_probe(struct platform_device *pdev)
}
i2s_tdm->clk_trcm = TRCM_RX;
}
- if (i2s_tdm->clk_trcm != TRCM_TXRX)
- i2s_tdm_dai.symmetric_rate = 1;
+
+ ret = rockchip_i2s_tdm_init_dai(i2s_tdm);
+ if (ret)
+ return ret;
i2s_tdm->grf = syscon_regmap_lookup_by_phandle(node, "rockchip,grf");
if (IS_ERR(i2s_tdm->grf))
@@ -1678,7 +1688,7 @@ static int rockchip_i2s_tdm_probe(struct platform_device *pdev)
ret = devm_snd_soc_register_component(&pdev->dev,
&rockchip_i2s_tdm_component,
- &i2s_tdm_dai, 1);
+ i2s_tdm->dai, 1);
if (ret) {
dev_err(&pdev->dev, "Could not register DAI\n");
--
2.34.0
