[linux-sunxi] [PATCH v3 02/12] ASoC: sun4i-i2s: Add clkdiv offsets to quirks
From: Chen-Yu Tsai <hidden>
Date: 2017-08-01 02:56:03
Also in:
alsa-devel, lkml
On Sat, Jul 29, 2017 at 10:17 PM, [off-list ref] wrote:
quoted hunk ↗ jump to hunk
From: Marcus Cooper <redacted> The BCLKDIV and MCLKDIV found on newer SoCs start from an offset of 1. Add the functionality to adjust the division values according to the needs to the device being used. Signed-off-by: Marcus Cooper <redacted> --- sound/soc/sunxi/sun4i-i2s.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c index d7ee7a443e4e..1d538de4e4d0 100644 --- a/sound/soc/sunxi/sun4i-i2s.c +++ b/sound/soc/sunxi/sun4i-i2s.c@@ -94,9 +94,13 @@ * struct sun4i_i2s_quirks - Differences between SoC variants. * * @has_reset: SoC needs reset deasserted. + * @mclk_offset: Value by which mclkdiv needs to be adjusted. + * @bclk_offset: Value by which bclkdiv needs to be adjusted. */ struct sun4i_i2s_quirks { bool has_reset; + unsigned int mclk_offset; + unsigned int bclk_offset; }; struct sun4i_i2s {@@ -149,7 +153,7 @@ static int sun4i_i2s_get_bclk_div(struct sun4i_i2s *i2s, const struct sun4i_i2s_clk_div *bdiv = &sun4i_i2s_bclk_div[i]; if (bdiv->div == div) - return bdiv->val; + return bdiv->val + i2s->variant->bclk_offset;
The offset should best be applied when the value is written to the register, in sun4i_i2s_set_clk_rate(). sun4i_i2s_get_*_div() should do what the name says, that is calculate a divider based on the parameters it is given. Regards ChenYu
quoted hunk ↗ jump to hunk
} return -EINVAL;@@ -167,7 +171,7 @@ static int sun4i_i2s_get_mclk_div(struct sun4i_i2s *i2s, const struct sun4i_i2s_clk_div *mdiv = &sun4i_i2s_mclk_div[i]; if (mdiv->div == div) - return mdiv->val; + return mdiv->val + i2s->variant->mclk_offset; } return -EINVAL; --2.13.3 -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscribe at googlegroups.com. For more options, visit https://groups.google.com/d/optout.