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@gmail.com ---

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");