brcm2708: update to latest patches from RPi Foundation

[openwrt/staging/dedeckeh.git] / target / linux / brcm2708 / patches-4.19 / 950-0065-ASoC-pcm512x-implement-set_tdm_slot-interface.patch

diff --git a/target/linux/brcm2708/patches-4.19/950-0065-ASoC-pcm512x-implement-set_tdm_slot-interface.patch b/target/linux/brcm2708/patches-4.19/950-0065-ASoC-pcm512x-implement-set_tdm_slot-interface.patch
deleted file mode 100644 (file)
index e656c05..0000000
--- a/target/linux/brcm2708/patches-4.19/950-0065-ASoC-pcm512x-implement-set_tdm_slot-interface.patch
+++ /dev/null
@@ -1,80 +0,0 @@
-From 5fd7bb26ef791a7da1c0573b980ab4fe6b9c2641 Mon Sep 17 00:00:00 2001
-From: Matthias Reichl <hias@horus.com>
-Date: Thu, 22 Feb 2018 11:55:06 +0100
-Subject: [PATCH] ASoC: pcm512x: implement set_tdm_slot interface
-
-PCM512x can accept data padded with additional BCLK cycles
-but the driver currently lacks an interface to configure this.
-
-This leads to the problem that S24_LE format in master mode
-can result in non-integer clock divisors and pcm512x running
-at a rather off rate.
-
-For example 48kHz with 48fs BCLK and SCLK at 24.576MHz uses
-a divisor of 10 (rounded down from 10.6666) and results in a
-51.2kHz LRCLK. With 64fs BCLK a divisor of 8 is used and
-LRCLK runs at exactly 48kHz.
-
-Fix this by providing a minimal set_tdm_slot implementation
-so machine drivers can optionally configure custom BCLK ratios.
-
-Signed-off-by: Matthias Reichl <hias@horus.com>
----
- sound/soc/codecs/pcm512x.c | 28 +++++++++++++++++++++++++++-
- 1 file changed, 27 insertions(+), 1 deletion(-)
-
---- a/sound/soc/codecs/pcm512x.c
-+++ b/sound/soc/codecs/pcm512x.c
-@@ -53,6 +53,7 @@ struct pcm512x_priv {
-       unsigned long overclock_pll;
-       unsigned long overclock_dac;
-       unsigned long overclock_dsp;
-+      int lrclk_div;
- };
- 
- /*
-@@ -851,7 +852,10 @@ static int pcm512x_set_dividers(struct s
-       int fssp;
-       int gpio;
- 
--      lrclk_div = snd_soc_params_to_frame_size(params);
-+      if (pcm512x->lrclk_div)
-+              lrclk_div = pcm512x->lrclk_div;
-+      else
-+              lrclk_div = snd_soc_params_to_frame_size(params);
-       if (lrclk_div == 0) {
-               dev_err(dev, "No LRCLK?\n");
-               return -EINVAL;
-@@ -1319,10 +1323,32 @@ static int pcm512x_set_fmt(struct snd_so
-       return 0;
- }
- 
-+static int pcm512x_set_tdm_slot(struct snd_soc_dai *dai,
-+      unsigned int tx_mask, unsigned int rx_mask,
-+      int slots, int width)
-+{
-+      struct snd_soc_component *component = dai->component;
-+      struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
-+
-+      switch (slots) {
-+      case 0:
-+              pcm512x->lrclk_div = 0;
-+              return 0;
-+      case 2:
-+              if (tx_mask != 0x03 || rx_mask != 0x03)
-+                      return -EINVAL;
-+              pcm512x->lrclk_div = slots * width;
-+              return 0;
-+      default:
-+              return -EINVAL;
-+      }
-+}
-+
- static const struct snd_soc_dai_ops pcm512x_dai_ops = {
-       .startup = pcm512x_dai_startup,
-       .hw_params = pcm512x_hw_params,
-       .set_fmt = pcm512x_set_fmt,
-+      .set_tdm_slot = pcm512x_set_tdm_slot,
- };
- 
- static struct snd_soc_dai_driver pcm512x_dai = {