[PATCH v3 3/7] ASoC: sun4i-spdif: Add TX fifo bit flush quirks

Clément Péron
2019-05-25T16:23:19Z

Allwinner H6 has a different bit to flush the TX FIFO.

Add a quirks to prepare introduction of H6 SoC.

Signed-off-by: Clément Péron <peron.clem@gmail.com>
---
sound/soc/sunxi/sun4i-spdif.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/sound/soc/sunxi/sun4i-spdif.c b/sound/soc/sunxi/sun4i-spdif.c
index b6c66a62e915..8317bbee0712 100644
--- a/sound/soc/sunxi/sun4i-spdif.c
+++ b/sound/soc/sunxi/sun4i-spdif.c
@@ -166,10 +166,12 @@
*
* @reg_dac_tx_data: TX FIFO offset for DMA config.
* @has_reset: SoC needs reset deasserted.
+ * @reg_fctl_ftx: TX FIFO flush bitmask.
*/
struct sun4i_spdif_quirks {
unsigned int reg_dac_txdata;
bool has_reset;
+ unsigned int reg_fctl_ftx;
};

struct sun4i_spdif_dev {
@@ -180,16 +182,19 @@ struct sun4i_spdif_dev {
struct snd_soc_dai_driver cpu_dai_drv;
struct regmap *regmap;
struct snd_dmaengine_dai_dma_data dma_params_tx;
+ const struct sun4i_spdif_quirks *quirks;
};

static void sun4i_spdif_configure(struct sun4i_spdif_dev *host)
{
+ const struct sun4i_spdif_quirks *quirks = host->quirks;
+
/* soft reset SPDIF */
regmap_write(host->regmap, SUN4I_SPDIF_CTL, SUN4I_SPDIF_CTL_RESET);

/* flush TX FIFO */
regmap_update_bits(host->regmap, SUN4I_SPDIF_FCTL,
- SUN4I_SPDIF_FCTL_FTX, SUN4I_SPDIF_FCTL_FTX);
+ quirks->reg_fctl_ftx, quirks->reg_fctl_ftx);

/* clear TX counter */
regmap_write(host->regmap, SUN4I_SPDIF_TXCNT, 0);
@@ -418,15 +423,18 @@ static struct snd_soc_dai_driver sun4i_spdif_dai = {

static const struct sun4i_spdif_quirks sun4i_a10_spdif_quirks = {
.reg_dac_txdata = SUN4I_SPDIF_TXFIFO,
+ .reg_fctl_ftx = SUN4I_SPDIF_FCTL_FTX,
};

static const struct sun4i_spdif_quirks sun6i_a31_spdif_quirks = {
.reg_dac_txdata = SUN4I_SPDIF_TXFIFO,
+ .reg_fctl_ftx = SUN4I_SPDIF_FCTL_FTX,
.has_reset = true,
};

static const struct sun4i_spdif_quirks sun8i_h3_spdif_quirks = {
.reg_dac_txdata = SUN8I_SPDIF_TXFIFO,
+ .reg_fctl_ftx = SUN4I_SPDIF_FCTL_FTX,
.has_reset = true,
};

@@ -507,6 +515,7 @@ static int sun4i_spdif_probe(struct platform_device *pdev)
dev_err(&pdev->dev, "Failed to determine the quirks to use\n");
return -ENODEV;
}
+ host->quirks = quirks;

host->regmap = devm_regmap_init_mmio(&pdev->dev, base,
&sun4i_spdif_regmap_config);
--
2.20.1