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| Started by | Chen-Yu Tsai <wens@csie.org> |
|---|---|
| First post | 2017-08-02 06:00 +0200 |
| Last post | 2017-08-02 06:00 +0200 |
| Articles | 1 — 1 participant |
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Re: [linux-sunxi] [PATCH v3 10/12] ASoC: sun4i-i2s: Check for slave select bit Chen-Yu Tsai <wens@csie.org> - 2017-08-02 06:00 +0200
| From | Chen-Yu Tsai <wens@csie.org> |
|---|---|
| Date | 2017-08-02 06:00 +0200 |
| Subject | Re: [linux-sunxi] [PATCH v3 10/12] ASoC: sun4i-i2s: Check for slave select bit |
| Message-ID | <u9SZc-4CX-13@gated-at.bofh.it> |
On Sat, Jul 29, 2017 at 10:17 PM, <codekipper@gmail.com> wrote:
> From: Marcus Cooper <codekipper@gmail.com>
>
> The newer SoCs do not have this setting. Instead they set the pin
> direction. Add a check to see if the bit is valid and if so set
> it accordingly.
>
> Signed-off-by: Marcus Cooper <codekipper@gmail.com>
> ---
> sound/soc/sunxi/sun4i-i2s.c | 38 ++++++++++++++++++++++----------------
> 1 file changed, 22 insertions(+), 16 deletions(-)
>
> diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
> index 9e060d1b73d5..1c4d763e3a8e 100644
> --- a/sound/soc/sunxi/sun4i-i2s.c
> +++ b/sound/soc/sunxi/sun4i-i2s.c
> @@ -96,6 +96,7 @@
> * struct sun4i_i2s_quirks - Differences between SoC variants.
> *
> * @has_reset: SoC needs reset deasserted.
> + * @has_slave_select_bit: SoC has a bit to enable slave mode.
> * @reg_offset_txdata: offset of the tx fifo.
> * @sun4i_i2s_regmap: regmap config to use.
> * @mclk_offset: Value by which mclkdiv needs to be adjusted.
> @@ -114,6 +115,7 @@
> */
> struct sun4i_i2s_quirks {
> bool has_reset;
> + bool has_slave_select_bit;
> unsigned int reg_offset_txdata; /* TX FIFO */
> const struct regmap_config *sun4i_i2s_regmap;
> unsigned int mclk_offset;
> @@ -391,30 +393,32 @@ static int sun4i_i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
> regmap_field_write(i2s->field_fmt_set_bclk_polarity, bclk_polarity);
> regmap_field_write(i2s->field_fmt_set_lrclk_polarity, lrclk_polarity);
>
> - /* DAI clock master masks */
> - switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
> - case SND_SOC_DAIFMT_CBS_CFS:
> - /* BCLK and LRCLK master */
> - val = SUN4I_I2S_CTRL_MODE_MASTER;
> - break;
> - case SND_SOC_DAIFMT_CBM_CFM:
> - /* BCLK and LRCLK slave */
> - val = SUN4I_I2S_CTRL_MODE_SLAVE;
> - break;
> - default:
> - return -EINVAL;
> + if (i2s->variant->has_slave_select_bit) {
> + /* DAI clock master masks */
> + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
> + case SND_SOC_DAIFMT_CBS_CFS:
> + /* BCLK and LRCLK master */
> + val = SUN4I_I2S_CTRL_MODE_MASTER;
> + break;
> + case SND_SOC_DAIFMT_CBM_CFM:
> + /* BCLK and LRCLK slave */
> + val = SUN4I_I2S_CTRL_MODE_SLAVE;
> + break;
> + default:
> + return -EINVAL;
> + }
> + regmap_update_bits(i2s->regmap, SUN4I_I2S_CTRL_REG,
> + SUN4I_I2S_CTRL_MODE_MASK,
> + val);
> }
>
> - regmap_update_bits(i2s->regmap, SUN4I_I2S_CTRL_REG,
> - SUN4I_I2S_CTRL_MODE_MASK,
> - val);
> -
> /* Set significant bits in our FIFOs */
> regmap_update_bits(i2s->regmap, SUN4I_I2S_FIFO_CTRL_REG,
> SUN4I_I2S_FIFO_CTRL_TX_MODE_MASK |
> SUN4I_I2S_FIFO_CTRL_RX_MODE_MASK,
> SUN4I_I2S_FIFO_CTRL_TX_MODE(1) |
> SUN4I_I2S_FIFO_CTRL_RX_MODE(1));
> +
Stray newline. Otherwise,
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
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