[PATCH v4 00/22] Support HDMI audio on NVIDIA Tegra20

[PATCH v4 00/22] Support HDMI audio on NVIDIA Tegra20

[Dmitry Osipenko]

This series revives Tegra20 S/PDIF driver which was upstreamed long time
ago, but never was used. It also turns Tegra DRM HDMI driver into HDMI
audio CODEC provider. Finally, HDMI audio is enabled in device-trees.
For now the audio is enable only for Acer A500 tablet and Toshiba AC100
netbook because they're already supported by upstream, later on ASUS TF101
tablet will join them.

I based S/PDIF patches on Arnd's Bergmann patch from a separate series [1]
that removes obsolete slave_id. This eases merging of the patches by
removing the merge conflict. This is a note for Mark Brown.

I also based this series on top of power management series [2]. I.e. [2]
should be applied first, otherwise "Add S/PDIF node to Tegra20 device-tree"
patch should have merge conflict. This is a note for Thierry.

[1] https://patchwork.ozlabs.org/project/linux-tegra/list/?series=273312
[2] https://patchwork.ozlabs.org/project/linux-tegra/list/?series=274534

Changelog:

v4: - Added patches that update multi_v7_defconfig with the enabled S/PDIF
      and APB DMA drivers.

v3: - Renamed S/PDIF device-tree clocks as was suggested by Rob Herring.

    - Added r-bs and acks that were given by Rob Herring to v2.

v2: - Corrected I2S yaml problem that was reported by the DT bot for v1
      by removing the non-existent required clock-names property.

    - Removed assigned-clocks property from S/PDIF yaml since this property
      is now inherited from the clocks property.

    - Reordered the "tegra20: spdif: Set FIFO trigger level" patch, making
      it the first sound/soc patch in the series, like it was suggested by
      Mark Brown in the comment to v1. Also reworded commit message of this
      patch to *not* make it looks like it should be backported to stable
      kernels.

Arnd Bergmann (1):
  ASoC: tegra20-spdif: stop setting slave_id

Dmitry Osipenko (21):
  ASoC: dt-bindings: Add binding for Tegra20 S/PDIF
  ASoC: dt-bindings: tegra20-i2s: Convert to schema
  ASoC: dt-bindings: tegra20-i2s: Document new nvidia,fixed-parent-rate
    property
  dt-bindings: host1x: Document optional HDMI sound-dai-cells
  ASoC: tegra20: spdif: Set FIFO trigger level
  ASoC: tegra20: spdif: Support device-tree
  ASoC: tegra20: spdif: Improve driver's code
  ASoC: tegra20: spdif: Use more resource-managed helpers
  ASoC: tegra20: spdif: Reset hardware
  ASoC: tegra20: spdif: Support system suspend
  ASoC: tegra20: spdif: Filter out unsupported rates
  ASoC: tegra20: i2s: Filter out unsupported rates
  drm/tegra: hdmi: Unwind tegra_hdmi_init() errors
  drm/tegra: hdmi: Register audio CODEC on Tegra20
  ARM: tegra_defconfig: Enable S/PDIF driver
  ARM: config: multi v7: Enable NVIDIA Tegra20 S/PDIF driver
  ARM: config: multi v7: Enable NVIDIA Tegra20 APB DMA driver
  ARM: tegra: Add S/PDIF node to Tegra20 device-tree
  ARM: tegra: Add HDMI audio graph to Tegra20 device-tree
  ARM: tegra: acer-a500: Enable S/PDIF and HDMI audio
  ARM: tegra: paz00: Enable S/PDIF and HDMI audio

 .../display/tegra/nvidia,tegra20-host1x.txt   |   1 +
 .../bindings/sound/nvidia,tegra20-i2s.txt     |  30 ---
 .../bindings/sound/nvidia,tegra20-i2s.yaml    |  77 +++++++
 .../bindings/sound/nvidia,tegra20-spdif.yaml  |  85 ++++++++
 .../boot/dts/tegra20-acer-a500-picasso.dts    |   8 +
 arch/arm/boot/dts/tegra20-paz00.dts           |   8 +
 arch/arm/boot/dts/tegra20.dtsi                |  40 +++-
 arch/arm/configs/multi_v7_defconfig           |   2 +
 arch/arm/configs/tegra_defconfig              |   1 +
 drivers/gpu/drm/tegra/Kconfig                 |   3 +
 drivers/gpu/drm/tegra/hdmi.c                  | 168 +++++++++++++--
 sound/soc/tegra/tegra20_i2s.c                 |  49 +++++
 sound/soc/tegra/tegra20_spdif.c               | 197 ++++++++++++------
 sound/soc/tegra/tegra20_spdif.h               |   1 +
 sound/soc/tegra/tegra_pcm.c                   |   6 +
 sound/soc/tegra/tegra_pcm.h                   |   1 +
 16 files changed, 574 insertions(+), 103 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.txt
 create mode 100644 Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.yaml
 create mode 100644 Documentation/devicetree/bindings/sound/nvidia,tegra20-spdif.yaml

-- 
2.33.1

[PATCH v4 01/22] ASoC: dt-bindings: Add binding for Tegra20 S/PDIF

[Dmitry Osipenko]

Add device-tree binding for Tegra20 S/PDIF controller.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 .../bindings/sound/nvidia,tegra20-spdif.yaml  | 85 +++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/nvidia,tegra20-spdif.yaml

diff --git a/Documentation/devicetree/bindings/sound/nvidia,tegra20-spdif.yaml b/Documentation/devicetree/bindings/sound/nvidia,tegra20-spdif.yaml
new file mode 100644
index 000000000000..60a368a132b8
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/nvidia,tegra20-spdif.yaml
@@ -0,0 +1,85 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/nvidia,tegra20-spdif.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVIDIA Tegra20 S/PDIF Controller
+
+description: |
+  The S/PDIF controller supports both input and output in serial audio
+  digital interface format. The input controller can digitally recover
+  a clock from the received stream. The S/PDIF controller is also used
+  to generate the embedded audio for HDMI output channel.
+
+maintainers:
+  - Thierry Reding <treding@nvidia.com>
+  - Jon Hunter <jonathanh@nvidia.com>
+
+properties:
+  compatible:
+    const: nvidia,tegra20-spdif
+
+  reg:
+    maxItems: 1
+
+  resets:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    minItems: 2
+
+  clock-names:
+    items:
+      - const: out
+      - const: in
+
+  dmas:
+    minItems: 2
+
+  dma-names:
+    items:
+      - const: rx
+      - const: tx
+
+  "#sound-dai-cells":
+    const: 0
+
+  nvidia,fixed-parent-rate:
+    description: |
+      Specifies whether board prefers parent clock to stay at a fixed rate.
+      This allows multiple Tegra20 audio components work simultaneously by
+      limiting number of supportable audio rates.
+    type: boolean
+
+required:
+  - compatible
+  - reg
+  - resets
+  - interrupts
+  - clocks
+  - clock-names
+  - dmas
+  - dma-names
+  - "#sound-dai-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    spdif@70002400 {
+        compatible = "nvidia,tegra20-spdif";
+        reg = <0x70002400 0x200>;
+        interrupts = <77>;
+        clocks = <&clk 99>, <&clk 98>;
+        clock-names = "out", "in";
+        resets = <&rst 10>;
+        dmas = <&apbdma 3>, <&apbdma 3>;
+        dma-names = "rx", "tx";
+        #sound-dai-cells = <0>;
+    };
+
+...
-- 
2.33.1

[PATCH v4 02/22] ASoC: dt-bindings: tegra20-i2s: Convert to schema

[Dmitry Osipenko]

Convert NVIDIA Tegra20 I2S binding to schema.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 .../bindings/sound/nvidia,tegra20-i2s.txt     | 30 --------
 .../bindings/sound/nvidia,tegra20-i2s.yaml    | 70 +++++++++++++++++++
 2 files changed, 70 insertions(+), 30 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.txt
 create mode 100644 Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.yaml

diff --git a/Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.txt b/Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.txt
deleted file mode 100644
index dc30c6bfbe95..000000000000
--- a/Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.txt
+++ /dev/null
@@ -1,30 +0,0 @@
-NVIDIA Tegra 20 I2S controller
-
-Required properties:
-- compatible : "nvidia,tegra20-i2s"
-- reg : Should contain I2S registers location and length
-- interrupts : Should contain I2S interrupt
-- resets : Must contain an entry for each entry in reset-names.
-  See ../reset/reset.txt for details.
-- reset-names : Must include the following entries:
-  - i2s
-- dmas : Must contain an entry for each entry in clock-names.
-  See ../dma/dma.txt for details.
-- dma-names : Must include the following entries:
-  - rx
-  - tx
-- clocks : Must contain one entry, for the module clock.
-  See ../clocks/clock-bindings.txt for details.
-
-Example:
-
-i2s@70002800 {
-	compatible = "nvidia,tegra20-i2s";
-	reg = <0x70002800 0x200>;
-	interrupts = < 45 >;
-	clocks = <&tegra_car 11>;
-	resets = <&tegra_car 11>;
-	reset-names = "i2s";
-	dmas = <&apbdma 21>, <&apbdma 21>;
-	dma-names = "rx", "tx";
-};
diff --git a/Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.yaml b/Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.yaml
new file mode 100644
index 000000000000..ad43b237d9af
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.yaml
@@ -0,0 +1,70 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/nvidia,tegra20-i2s.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVIDIA Tegra20 I2S Controller
+
+description: |
+  The I2S Controller streams synchronous serial audio data between system
+  memory and an external audio device. The controller supports the I2S Left
+  Justified Mode, Right Justified Mode, and DSP mode formats.
+
+maintainers:
+  - Thierry Reding <treding@nvidia.com>
+  - Jon Hunter <jonathanh@nvidia.com>
+
+properties:
+  compatible:
+    const: nvidia,tegra20-i2s
+
+  reg:
+    maxItems: 1
+
+  resets:
+    maxItems: 1
+
+  reset-names:
+    const: i2s
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    minItems: 1
+
+  dmas:
+    minItems: 2
+
+  dma-names:
+    items:
+      - const: rx
+      - const: tx
+
+required:
+  - compatible
+  - reg
+  - resets
+  - reset-names
+  - interrupts
+  - clocks
+  - dmas
+  - dma-names
+
+additionalProperties: false
+
+examples:
+  - |
+    i2s@70002800 {
+        compatible = "nvidia,tegra20-i2s";
+        reg = <0x70002800 0x200>;
+        interrupts = <45>;
+        clocks = <&tegra_car 11>;
+        resets = <&tegra_car 11>;
+        reset-names = "i2s";
+        dmas = <&apbdma 21>, <&apbdma 21>;
+        dma-names = "rx", "tx";
+    };
+
+...
-- 
2.33.1

[PATCH v4 03/22] ASoC: dt-bindings: tegra20-i2s: Document new nvidia, fixed-parent-rate property

[Dmitry Osipenko]

Document new nvidia,fixed-parent-rate property which instructs that this
board wants parent clock to stay at a fixed rate. It allows to prevent
conflicts between audio components that share same parent PLL. For
instance, this property allows to have HDMI audio, speaker and headphones
in the system playing audio simultaneously, which is a common pattern for
consumer devices.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 .../devicetree/bindings/sound/nvidia,tegra20-i2s.yaml      | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.yaml b/Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.yaml
index ad43b237d9af..68ae124eaf80 100644
--- a/Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.yaml
+++ b/Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.yaml
@@ -42,6 +42,13 @@ properties:
       - const: rx
       - const: tx
 
+  nvidia,fixed-parent-rate:
+    description: |
+      Specifies whether board prefers parent clock to stay at a fixed rate.
+      This allows multiple Tegra20 audio components work simultaneously by
+      limiting number of supportable audio rates.
+    type: boolean
+
 required:
   - compatible
   - reg
-- 
2.33.1

[PATCH v4 04/22] dt-bindings: host1x: Document optional HDMI sound-dai-cells

[Dmitry Osipenko]

Document new optional sound-dai-cells property of HDMI node. This node will
be used as endpoint of HDMI sound DAI graph.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 .../devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt  | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt b/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt
index e61999ce54e9..27b746f28f31 100644
--- a/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt
+++ b/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt
@@ -297,6 +297,7 @@ of the following host1x client modules:
   - nvidia,edid: supplies a binary EDID blob
   - nvidia,panel: phandle of a display panel
   - operating-points-v2: See ../bindings/opp/opp.txt for details.
+  - #sound-dai-cells: Should be 0.
 
 - tvo: TV encoder output
 
-- 
2.33.1

[PATCH v4 05/22] ASoC: tegra20: spdif: Set FIFO trigger level

[Dmitry Osipenko]

FIFO trigger level must be not less than the size of DMA burst, otherwise
audio will be played x4 faster that it should be because part of the DMA
data will be dropped on FIFO input buffer overflow.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 sound/soc/tegra/tegra20_spdif.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/sound/soc/tegra/tegra20_spdif.c b/sound/soc/tegra/tegra20_spdif.c
index 7751575cd6d6..6f0570cde964 100644
--- a/sound/soc/tegra/tegra20_spdif.c
+++ b/sound/soc/tegra/tegra20_spdif.c
@@ -69,6 +69,14 @@ static int tegra20_spdif_hw_params(struct snd_pcm_substream *substream,
 
 	regmap_update_bits(spdif->regmap, TEGRA20_SPDIF_CTRL, mask, val);
 
+	/*
+	 * FIFO trigger level must be bigger than DMA burst or equal to it,
+	 * otherwise data is discarded on overflow.
+	 */
+	regmap_update_bits(spdif->regmap, TEGRA20_SPDIF_DATA_FIFO_CSR,
+			   TEGRA20_SPDIF_DATA_FIFO_CSR_TX_ATN_LVL_MASK,
+			   TEGRA20_SPDIF_DATA_FIFO_CSR_TX_ATN_LVL_TU4_WORD_FULL);
+
 	switch (params_rate(params)) {
 	case 32000:
 		spdifclock = 4096000;
-- 
2.33.1

[PATCH v4 06/22] ASoC: tegra20-spdif: stop setting slave_id

[Dmitry Osipenko]

From: Arnd Bergmann <arnd@arndb.de>

The DMA resource is never set up anywhere, and passing this as slave_id
has not been the proper procedure in a long time.

As a preparation for removing all slave_id references from the ALSA code,
remove this one.

According to Dmitry Osipenko, this driver has never been used and
the mechanism for configuring DMA would not work as it is implemented,
so this part will get rewritten when the driver gets put into use
again in the future.

Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 sound/soc/tegra/tegra20_spdif.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/sound/soc/tegra/tegra20_spdif.c b/sound/soc/tegra/tegra20_spdif.c
index 6f0570cde964..e45e371edc42 100644
--- a/sound/soc/tegra/tegra20_spdif.c
+++ b/sound/soc/tegra/tegra20_spdif.c
@@ -298,7 +298,6 @@ static int tegra20_spdif_platform_probe(struct platform_device *pdev)
 	spdif->playback_dma_data.addr = mem->start + TEGRA20_SPDIF_DATA_OUT;
 	spdif->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
 	spdif->playback_dma_data.maxburst = 4;
-	spdif->playback_dma_data.slave_id = dmareq->start;
 
 	pm_runtime_enable(&pdev->dev);
 
-- 
2.33.1

[PATCH v4 07/22] ASoC: tegra20: spdif: Support device-tree

[Dmitry Osipenko]

Tegra20 S/PDIF driver was added in a pre-DT era and was never used since
that time. Revive driver by adding device-tree support.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 sound/soc/tegra/tegra20_spdif.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/sound/soc/tegra/tegra20_spdif.c b/sound/soc/tegra/tegra20_spdif.c
index e45e371edc42..801784915004 100644
--- a/sound/soc/tegra/tegra20_spdif.c
+++ b/sound/soc/tegra/tegra20_spdif.c
@@ -10,6 +10,7 @@
 #include <linux/device.h>
 #include <linux/io.h>
 #include <linux/module.h>
+#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 #include <linux/regmap.h>
@@ -270,7 +271,7 @@ static int tegra20_spdif_platform_probe(struct platform_device *pdev)
 
 	dev_set_drvdata(&pdev->dev, spdif);
 
-	spdif->clk_spdif_out = devm_clk_get(&pdev->dev, "spdif_out");
+	spdif->clk_spdif_out = devm_clk_get(&pdev->dev, "out");
 	if (IS_ERR(spdif->clk_spdif_out)) {
 		pr_err("Can't retrieve spdif clock\n");
 		ret = PTR_ERR(spdif->clk_spdif_out);
@@ -340,10 +341,17 @@ static const struct dev_pm_ops tegra20_spdif_pm_ops = {
 			   tegra20_spdif_runtime_resume, NULL)
 };
 
+static const struct of_device_id tegra20_spdif_of_match[] = {
+	{ .compatible = "nvidia,tegra20-spdif", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, tegra20_spdif_of_match);
+
 static struct platform_driver tegra20_spdif_driver = {
 	.driver = {
 		.name = DRV_NAME,
 		.pm = &tegra20_spdif_pm_ops,
+		.of_match_table = tegra20_spdif_of_match,
 	},
 	.probe = tegra20_spdif_platform_probe,
 	.remove = tegra20_spdif_platform_remove,
@@ -354,4 +362,3 @@ module_platform_driver(tegra20_spdif_driver);
 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
 MODULE_DESCRIPTION("Tegra20 SPDIF ASoC driver");
 MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:" DRV_NAME);
-- 
2.33.1

[PATCH v4 08/22] ASoC: tegra20: spdif: Improve driver's code

[Dmitry Osipenko]

- Clean up whitespaces, defines and variables.

- Remove obsolete code.

- Adhere to upstream coding style.

- Don't override returned error code.

- Replace pr_err with dev_err.

No functional changes are made by this patch. This is a minor code's
refactoring that will ease further maintenance of the driver.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 sound/soc/tegra/tegra20_spdif.c | 49 ++++++++++++---------------------
 1 file changed, 18 insertions(+), 31 deletions(-)

diff --git a/sound/soc/tegra/tegra20_spdif.c b/sound/soc/tegra/tegra20_spdif.c
index 801784915004..d5c618611dbb 100644
--- a/sound/soc/tegra/tegra20_spdif.c
+++ b/sound/soc/tegra/tegra20_spdif.c
@@ -23,8 +23,6 @@
 
 #include "tegra20_spdif.h"
 
-#define DRV_NAME "tegra20-spdif"
-
 static __maybe_unused int tegra20_spdif_runtime_suspend(struct device *dev)
 {
 	struct tegra20_spdif *spdif = dev_get_drvdata(dev);
@@ -49,11 +47,10 @@ static __maybe_unused int tegra20_spdif_runtime_resume(struct device *dev)
 }
 
 static int tegra20_spdif_hw_params(struct snd_pcm_substream *substream,
-				struct snd_pcm_hw_params *params,
-				struct snd_soc_dai *dai)
+				   struct snd_pcm_hw_params *params,
+				   struct snd_soc_dai *dai)
 {
-	struct device *dev = dai->dev;
-	struct tegra20_spdif *spdif = snd_soc_dai_get_drvdata(dai);
+	struct tegra20_spdif *spdif = dev_get_drvdata(dai->dev);
 	unsigned int mask = 0, val = 0;
 	int ret, spdifclock;
 
@@ -106,7 +103,7 @@ static int tegra20_spdif_hw_params(struct snd_pcm_substream *substream,
 
 	ret = clk_set_rate(spdif->clk_spdif_out, spdifclock);
 	if (ret) {
-		dev_err(dev, "Can't set SPDIF clock rate: %d\n", ret);
+		dev_err(dai->dev, "Can't set SPDIF clock rate: %d\n", ret);
 		return ret;
 	}
 
@@ -127,9 +124,9 @@ static void tegra20_spdif_stop_playback(struct tegra20_spdif *spdif)
 }
 
 static int tegra20_spdif_trigger(struct snd_pcm_substream *substream, int cmd,
-				struct snd_soc_dai *dai)
+				 struct snd_soc_dai *dai)
 {
-	struct tegra20_spdif *spdif = snd_soc_dai_get_drvdata(dai);
+	struct tegra20_spdif *spdif = dev_get_drvdata(dai->dev);
 
 	switch (cmd) {
 	case SNDRV_PCM_TRIGGER_START:
@@ -151,7 +148,7 @@ static int tegra20_spdif_trigger(struct snd_pcm_substream *substream, int cmd,
 
 static int tegra20_spdif_probe(struct snd_soc_dai *dai)
 {
-	struct tegra20_spdif *spdif = snd_soc_dai_get_drvdata(dai);
+	struct tegra20_spdif *spdif = dev_get_drvdata(dai->dev);
 
 	dai->capture_dma_data = NULL;
 	dai->playback_dma_data = &spdif->playback_dma_data;
@@ -160,26 +157,26 @@ static int tegra20_spdif_probe(struct snd_soc_dai *dai)
 }
 
 static const struct snd_soc_dai_ops tegra20_spdif_dai_ops = {
-	.hw_params	= tegra20_spdif_hw_params,
-	.trigger	= tegra20_spdif_trigger,
+	.hw_params = tegra20_spdif_hw_params,
+	.trigger = tegra20_spdif_trigger,
 };
 
 static struct snd_soc_dai_driver tegra20_spdif_dai = {
-	.name = DRV_NAME,
+	.name = "tegra20-spdif",
 	.probe = tegra20_spdif_probe,
 	.playback = {
 		.stream_name = "Playback",
 		.channels_min = 2,
 		.channels_max = 2,
 		.rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |
-				SNDRV_PCM_RATE_48000,
+			 SNDRV_PCM_RATE_48000,
 		.formats = SNDRV_PCM_FMTBIT_S16_LE,
 	},
 	.ops = &tegra20_spdif_dai_ops,
 };
 
 static const struct snd_soc_component_driver tegra20_spdif_component = {
-	.name		= DRV_NAME,
+	.name = "tegra20-spdif",
 };
 
 static bool tegra20_spdif_wr_rd_reg(struct device *dev, unsigned int reg)
@@ -260,7 +257,7 @@ static const struct regmap_config tegra20_spdif_regmap_config = {
 static int tegra20_spdif_platform_probe(struct platform_device *pdev)
 {
 	struct tegra20_spdif *spdif;
-	struct resource *mem, *dmareq;
+	struct resource *mem;
 	void __iomem *regs;
 	int ret;
 
@@ -273,27 +270,19 @@ static int tegra20_spdif_platform_probe(struct platform_device *pdev)
 
 	spdif->clk_spdif_out = devm_clk_get(&pdev->dev, "out");
 	if (IS_ERR(spdif->clk_spdif_out)) {
-		pr_err("Can't retrieve spdif clock\n");
-		ret = PTR_ERR(spdif->clk_spdif_out);
-		return ret;
+		dev_err(&pdev->dev, "Could not retrieve spdif clock\n");
+		return PTR_ERR(spdif->clk_spdif_out);
 	}
 
 	regs = devm_platform_get_and_ioremap_resource(pdev, 0, &mem);
 	if (IS_ERR(regs))
 		return PTR_ERR(regs);
 
-	dmareq = platform_get_resource(pdev, IORESOURCE_DMA, 0);
-	if (!dmareq) {
-		dev_err(&pdev->dev, "No DMA resource\n");
-		return -ENODEV;
-	}
-
 	spdif->regmap = devm_regmap_init_mmio(&pdev->dev, regs,
-					    &tegra20_spdif_regmap_config);
+					      &tegra20_spdif_regmap_config);
 	if (IS_ERR(spdif->regmap)) {
 		dev_err(&pdev->dev, "regmap init failed\n");
-		ret = PTR_ERR(spdif->regmap);
-		return ret;
+		return PTR_ERR(spdif->regmap);
 	}
 
 	spdif->playback_dma_data.addr = mem->start + TEGRA20_SPDIF_DATA_OUT;
@@ -306,7 +295,6 @@ static int tegra20_spdif_platform_probe(struct platform_device *pdev)
 					 &tegra20_spdif_dai, 1);
 	if (ret) {
 		dev_err(&pdev->dev, "Could not register DAI: %d\n", ret);
-		ret = -ENOMEM;
 		goto err_pm_disable;
 	}
 
@@ -349,14 +337,13 @@ MODULE_DEVICE_TABLE(of, tegra20_spdif_of_match);
 
 static struct platform_driver tegra20_spdif_driver = {
 	.driver = {
-		.name = DRV_NAME,
+		.name = "tegra20-spdif",
 		.pm = &tegra20_spdif_pm_ops,
 		.of_match_table = tegra20_spdif_of_match,
 	},
 	.probe = tegra20_spdif_platform_probe,
 	.remove = tegra20_spdif_platform_remove,
 };
-
 module_platform_driver(tegra20_spdif_driver);
 
 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
-- 
2.33.1

[PATCH v4 09/22] ASoC: tegra20: spdif: Use more resource-managed helpers

[Dmitry Osipenko]

Use resource-managed helpers to make code cleaner. Driver's remove callback
isn't needed anymore since driver is completely resource-managed now.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 sound/soc/tegra/tegra20_spdif.c | 33 +++++++++------------------------
 sound/soc/tegra/tegra_pcm.c     |  6 ++++++
 sound/soc/tegra/tegra_pcm.h     |  1 +
 3 files changed, 16 insertions(+), 24 deletions(-)

diff --git a/sound/soc/tegra/tegra20_spdif.c b/sound/soc/tegra/tegra20_spdif.c
index d5c618611dbb..7dd263721c2c 100644
--- a/sound/soc/tegra/tegra20_spdif.c
+++ b/sound/soc/tegra/tegra20_spdif.c
@@ -289,38 +289,24 @@ static int tegra20_spdif_platform_probe(struct platform_device *pdev)
 	spdif->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
 	spdif->playback_dma_data.maxburst = 4;
 
-	pm_runtime_enable(&pdev->dev);
+	ret = devm_pm_runtime_enable(&pdev->dev);
+	if (ret)
+		return ret;
 
-	ret = snd_soc_register_component(&pdev->dev, &tegra20_spdif_component,
-					 &tegra20_spdif_dai, 1);
+	ret = devm_snd_soc_register_component(&pdev->dev,
+					      &tegra20_spdif_component,
+					      &tegra20_spdif_dai, 1);
 	if (ret) {
 		dev_err(&pdev->dev, "Could not register DAI: %d\n", ret);
-		goto err_pm_disable;
+		return ret;
 	}
 
-	ret = tegra_pcm_platform_register(&pdev->dev);
+	ret = devm_tegra_pcm_platform_register(&pdev->dev);
 	if (ret) {
 		dev_err(&pdev->dev, "Could not register PCM: %d\n", ret);
-		goto err_unregister_component;
+		return ret;
 	}
 
-	return 0;
-
-err_unregister_component:
-	snd_soc_unregister_component(&pdev->dev);
-err_pm_disable:
-	pm_runtime_disable(&pdev->dev);
-
-	return ret;
-}
-
-static int tegra20_spdif_platform_remove(struct platform_device *pdev)
-{
-	tegra_pcm_platform_unregister(&pdev->dev);
-	snd_soc_unregister_component(&pdev->dev);
-
-	pm_runtime_disable(&pdev->dev);
-
 	return 0;
 }
 
@@ -342,7 +328,6 @@ static struct platform_driver tegra20_spdif_driver = {
 		.of_match_table = tegra20_spdif_of_match,
 	},
 	.probe = tegra20_spdif_platform_probe,
-	.remove = tegra20_spdif_platform_remove,
 };
 module_platform_driver(tegra20_spdif_driver);
 
diff --git a/sound/soc/tegra/tegra_pcm.c b/sound/soc/tegra/tegra_pcm.c
index ef1e74d95236..468c8e77de21 100644
--- a/sound/soc/tegra/tegra_pcm.c
+++ b/sound/soc/tegra/tegra_pcm.c
@@ -48,6 +48,12 @@ int tegra_pcm_platform_register(struct device *dev)
 }
 EXPORT_SYMBOL_GPL(tegra_pcm_platform_register);
 
+int devm_tegra_pcm_platform_register(struct device *dev)
+{
+	return devm_snd_dmaengine_pcm_register(dev, &tegra_dmaengine_pcm_config, 0);
+}
+EXPORT_SYMBOL_GPL(devm_tegra_pcm_platform_register);
+
 int tegra_pcm_platform_register_with_chan_names(struct device *dev,
 				struct snd_dmaengine_pcm_config *config,
 				char *txdmachan, char *rxdmachan)
diff --git a/sound/soc/tegra/tegra_pcm.h b/sound/soc/tegra/tegra_pcm.h
index d602126c65b7..2a36eea1740d 100644
--- a/sound/soc/tegra/tegra_pcm.h
+++ b/sound/soc/tegra/tegra_pcm.h
@@ -32,6 +32,7 @@ int tegra_pcm_hw_params(struct snd_soc_component *component,
 snd_pcm_uframes_t tegra_pcm_pointer(struct snd_soc_component *component,
 				    struct snd_pcm_substream *substream);
 int tegra_pcm_platform_register(struct device *dev);
+int devm_tegra_pcm_platform_register(struct device *dev);
 int tegra_pcm_platform_register_with_chan_names(struct device *dev,
 				struct snd_dmaengine_pcm_config *config,
 				char *txdmachan, char *rxdmachan);
-- 
2.33.1

[PATCH v4 10/22] ASoC: tegra20: spdif: Reset hardware

[Dmitry Osipenko]

Reset S/PDIF controller on runtime PM suspend/resume to ensure that we
always have a consistent hardware state.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 sound/soc/tegra/tegra20_spdif.c | 32 ++++++++++++++++++++++++++++++++
 sound/soc/tegra/tegra20_spdif.h |  1 +
 2 files changed, 33 insertions(+)

diff --git a/sound/soc/tegra/tegra20_spdif.c b/sound/soc/tegra/tegra20_spdif.c
index 7dd263721c2c..bc45a0a8afab 100644
--- a/sound/soc/tegra/tegra20_spdif.c
+++ b/sound/soc/tegra/tegra20_spdif.c
@@ -7,6 +7,7 @@
  */
 
 #include <linux/clk.h>
+#include <linux/delay.h>
 #include <linux/device.h>
 #include <linux/io.h>
 #include <linux/module.h>
@@ -14,6 +15,7 @@
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 #include <linux/regmap.h>
+#include <linux/reset.h>
 #include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
@@ -27,6 +29,8 @@ static __maybe_unused int tegra20_spdif_runtime_suspend(struct device *dev)
 {
 	struct tegra20_spdif *spdif = dev_get_drvdata(dev);
 
+	regcache_cache_only(spdif->regmap, true);
+
 	clk_disable_unprepare(spdif->clk_spdif_out);
 
 	return 0;
@@ -37,13 +41,35 @@ static __maybe_unused int tegra20_spdif_runtime_resume(struct device *dev)
 	struct tegra20_spdif *spdif = dev_get_drvdata(dev);
 	int ret;
 
+	ret = reset_control_assert(spdif->reset);
+	if (ret)
+		return ret;
+
 	ret = clk_prepare_enable(spdif->clk_spdif_out);
 	if (ret) {
 		dev_err(dev, "clk_enable failed: %d\n", ret);
 		return ret;
 	}
 
+	usleep_range(10, 100);
+
+	ret = reset_control_deassert(spdif->reset);
+	if (ret)
+		goto disable_clocks;
+
+	regcache_cache_only(spdif->regmap, false);
+	regcache_mark_dirty(spdif->regmap);
+
+	ret = regcache_sync(spdif->regmap);
+	if (ret)
+		goto disable_clocks;
+
 	return 0;
+
+disable_clocks:
+	clk_disable_unprepare(spdif->clk_spdif_out);
+
+	return ret;
 }
 
 static int tegra20_spdif_hw_params(struct snd_pcm_substream *substream,
@@ -268,6 +294,12 @@ static int tegra20_spdif_platform_probe(struct platform_device *pdev)
 
 	dev_set_drvdata(&pdev->dev, spdif);
 
+	spdif->reset = devm_reset_control_get_exclusive(&pdev->dev, NULL);
+	if (IS_ERR(spdif->reset)) {
+		dev_err(&pdev->dev, "Can't retrieve spdif reset\n");
+		return PTR_ERR(spdif->reset);
+	}
+
 	spdif->clk_spdif_out = devm_clk_get(&pdev->dev, "out");
 	if (IS_ERR(spdif->clk_spdif_out)) {
 		dev_err(&pdev->dev, "Could not retrieve spdif clock\n");
diff --git a/sound/soc/tegra/tegra20_spdif.h b/sound/soc/tegra/tegra20_spdif.h
index 1973ffc2d5c7..ff4b79e2052f 100644
--- a/sound/soc/tegra/tegra20_spdif.h
+++ b/sound/soc/tegra/tegra20_spdif.h
@@ -451,6 +451,7 @@ struct tegra20_spdif {
 	struct snd_dmaengine_dai_dma_data capture_dma_data;
 	struct snd_dmaengine_dai_dma_data playback_dma_data;
 	struct regmap *regmap;
+	struct reset_control *reset;
 };
 
 #endif
-- 
2.33.1

[PATCH v4 11/22] ASoC: tegra20: spdif: Support system suspend

[Dmitry Osipenko]

Support system suspend by enforcing runtime PM suspend/resume.
Now there is no doubt that h/w is indeed stopped during suspend
and that h/w state will be properly restored after resume.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 sound/soc/tegra/tegra20_spdif.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/soc/tegra/tegra20_spdif.c b/sound/soc/tegra/tegra20_spdif.c
index bc45a0a8afab..a4aa5614aef4 100644
--- a/sound/soc/tegra/tegra20_spdif.c
+++ b/sound/soc/tegra/tegra20_spdif.c
@@ -345,6 +345,8 @@ static int tegra20_spdif_platform_probe(struct platform_device *pdev)
 static const struct dev_pm_ops tegra20_spdif_pm_ops = {
 	SET_RUNTIME_PM_OPS(tegra20_spdif_runtime_suspend,
 			   tegra20_spdif_runtime_resume, NULL)
+	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+				pm_runtime_force_resume)
 };
 
 static const struct of_device_id tegra20_spdif_of_match[] = {
-- 
2.33.1

[PATCH v4 12/22] ASoC: tegra20: spdif: Filter out unsupported rates

[Dmitry Osipenko]

SPDIF and other SoC components share audio PLL on Tegra, thus only one
component may set the desired base clock rate. This creates problem for
HDMI audio because it uses SPDIF and audio may not work if SPDIF's clock
doesn't exactly match standard audio rate since some receivers may reject
audio in that case. Filter out audio rates which SPDIF output can't
support, assuming that other components won't change rate at runtime.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 sound/soc/tegra/tegra20_spdif.c | 61 +++++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)

diff --git a/sound/soc/tegra/tegra20_spdif.c b/sound/soc/tegra/tegra20_spdif.c
index a4aa5614aef4..d09cd7ee6879 100644
--- a/sound/soc/tegra/tegra20_spdif.c
+++ b/sound/soc/tegra/tegra20_spdif.c
@@ -79,6 +79,7 @@ static int tegra20_spdif_hw_params(struct snd_pcm_substream *substream,
 	struct tegra20_spdif *spdif = dev_get_drvdata(dai->dev);
 	unsigned int mask = 0, val = 0;
 	int ret, spdifclock;
+	long rate;
 
 	mask |= TEGRA20_SPDIF_CTRL_PACK |
 		TEGRA20_SPDIF_CTRL_BIT_MODE_MASK;
@@ -133,6 +134,12 @@ static int tegra20_spdif_hw_params(struct snd_pcm_substream *substream,
 		return ret;
 	}
 
+	rate = clk_get_rate(spdif->clk_spdif_out);
+	if (rate != spdifclock)
+		dev_warn_once(dai->dev,
+			      "SPDIF clock rate %d doesn't match requested rate %lu\n",
+			      spdifclock, rate);
+
 	return 0;
 }
 
@@ -172,6 +179,59 @@ static int tegra20_spdif_trigger(struct snd_pcm_substream *substream, int cmd,
 	return 0;
 }
 
+static int tegra20_spdif_filter_rates(struct snd_pcm_hw_params *params,
+				      struct snd_pcm_hw_rule *rule)
+{
+	struct snd_interval *r = hw_param_interval(params, rule->var);
+	struct snd_soc_dai *dai = rule->private;
+	struct tegra20_spdif *spdif = dev_get_drvdata(dai->dev);
+	struct clk *parent = clk_get_parent(spdif->clk_spdif_out);
+	const unsigned int rates[] = { 32000, 44100, 48000 };
+	long i, parent_rate, valid_rates = 0;
+
+	parent_rate = clk_get_rate(parent);
+	if (parent_rate <= 0) {
+		dev_err(dai->dev, "Can't get parent clock rate: %ld\n",
+			parent_rate);
+		return parent_rate ?: -EINVAL;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(rates); i++) {
+		if (parent_rate % (rates[i] * 128) == 0)
+			valid_rates |= BIT(i);
+	}
+
+	/*
+	 * At least one rate must be valid, otherwise the parent clock isn't
+	 * audio PLL. Nothing should be filtered in this case.
+	 */
+	if (!valid_rates)
+		valid_rates = BIT(ARRAY_SIZE(rates)) - 1;
+
+	return snd_interval_list(r, ARRAY_SIZE(rates), rates, valid_rates);
+}
+
+static int tegra20_spdif_startup(struct snd_pcm_substream *substream,
+				 struct snd_soc_dai *dai)
+{
+	if (!device_property_read_bool(dai->dev, "nvidia,fixed-parent-rate"))
+		return 0;
+
+	/*
+	 * SPDIF and I2S share audio PLL. HDMI takes audio packets from SPDIF
+	 * and audio may not work on some TVs if clock rate isn't precise.
+	 *
+	 * PLL rate is controlled by I2S side. Filter out audio rates that
+	 * don't match PLL rate at the start of stream to allow both SPDIF
+	 * and I2S work simultaneously, assuming that PLL rate won't be
+	 * changed later on.
+	 */
+	return snd_pcm_hw_rule_add(substream->runtime, 0,
+				   SNDRV_PCM_HW_PARAM_RATE,
+				   tegra20_spdif_filter_rates, dai,
+				   SNDRV_PCM_HW_PARAM_RATE, -1);
+}
+
 static int tegra20_spdif_probe(struct snd_soc_dai *dai)
 {
 	struct tegra20_spdif *spdif = dev_get_drvdata(dai->dev);
@@ -185,6 +245,7 @@ static int tegra20_spdif_probe(struct snd_soc_dai *dai)
 static const struct snd_soc_dai_ops tegra20_spdif_dai_ops = {
 	.hw_params = tegra20_spdif_hw_params,
 	.trigger = tegra20_spdif_trigger,
+	.startup = tegra20_spdif_startup,
 };
 
 static struct snd_soc_dai_driver tegra20_spdif_dai = {
-- 
2.33.1

[PATCH v4 13/22] ASoC: tegra20: i2s: Filter out unsupported rates

[Dmitry Osipenko]

Support new nvidia,fixed-parent-rate device-tree property which instructs
I2S that board wants parent clock rate to stay at a fixed rate. This allows
to play audio over S/PDIF and I2S simultaneously. The root of the problem
is that audio components on Tegra share the same audio PLL, and thus, only
a subset of rates can be supported if we want to play audio simultaneously.
Filter out audio rates that don't match parent clock rate if device-tree
has the nvidia,fixed-parent-rate property.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 sound/soc/tegra/tegra20_i2s.c | 49 +++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)

diff --git a/sound/soc/tegra/tegra20_i2s.c b/sound/soc/tegra/tegra20_i2s.c
index 266d2cab9f49..27365a877e47 100644
--- a/sound/soc/tegra/tegra20_i2s.c
+++ b/sound/soc/tegra/tegra20_i2s.c
@@ -262,10 +262,59 @@ static int tegra20_i2s_probe(struct snd_soc_dai *dai)
 	return 0;
 }
 
+static const unsigned int tegra20_i2s_rates[] = {
+	8000, 11025, 16000, 22050, 32000, 44100, 48000, 64000, 88200, 96000
+};
+
+static int tegra20_i2s_filter_rates(struct snd_pcm_hw_params *params,
+				    struct snd_pcm_hw_rule *rule)
+{
+	struct snd_interval *r = hw_param_interval(params, rule->var);
+	struct snd_soc_dai *dai = rule->private;
+	struct tegra20_i2s *i2s = dev_get_drvdata(dai->dev);
+	struct clk *parent = clk_get_parent(i2s->clk_i2s);
+	long i, parent_rate, valid_rates = 0;
+
+	parent_rate = clk_get_rate(parent);
+	if (parent_rate <= 0) {
+		dev_err(dai->dev, "Can't get parent clock rate: %ld\n",
+			parent_rate);
+		return parent_rate ?: -EINVAL;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(tegra20_i2s_rates); i++) {
+		if (parent_rate % (tegra20_i2s_rates[i] * 128) == 0)
+			valid_rates |= BIT(i);
+	}
+
+	/*
+	 * At least one rate must be valid, otherwise the parent clock isn't
+	 * audio PLL. Nothing should be filtered in this case.
+	 */
+	if (!valid_rates)
+		valid_rates = BIT(ARRAY_SIZE(tegra20_i2s_rates)) - 1;
+
+	return snd_interval_list(r, ARRAY_SIZE(tegra20_i2s_rates),
+				 tegra20_i2s_rates, valid_rates);
+}
+
+static int tegra20_i2s_startup(struct snd_pcm_substream *substream,
+			       struct snd_soc_dai *dai)
+{
+	if (!device_property_read_bool(dai->dev, "nvidia,fixed-parent-rate"))
+		return 0;
+
+	return snd_pcm_hw_rule_add(substream->runtime, 0,
+				   SNDRV_PCM_HW_PARAM_RATE,
+				   tegra20_i2s_filter_rates, dai,
+				   SNDRV_PCM_HW_PARAM_RATE, -1);
+}
+
 static const struct snd_soc_dai_ops tegra20_i2s_dai_ops = {
 	.set_fmt	= tegra20_i2s_set_fmt,
 	.hw_params	= tegra20_i2s_hw_params,
 	.trigger	= tegra20_i2s_trigger,
+	.startup	= tegra20_i2s_startup,
 };
 
 static const struct snd_soc_dai_driver tegra20_i2s_dai_template = {
-- 
2.33.1

[PATCH v4 14/22] drm/tegra: hdmi: Unwind tegra_hdmi_init() errors

[Dmitry Osipenko]

Add missing error unwinding to tegra_hdmi_init(), for consistency.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 drivers/gpu/drm/tegra/hdmi.c | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/tegra/hdmi.c b/drivers/gpu/drm/tegra/hdmi.c
index 3242baddc5e7..cc42476fd023 100644
--- a/drivers/gpu/drm/tegra/hdmi.c
+++ b/drivers/gpu/drm/tegra/hdmi.c
@@ -1456,22 +1456,31 @@ static int tegra_hdmi_init(struct host1x_client *client)
 	if (err < 0) {
 		dev_err(client->dev, "failed to enable HDMI regulator: %d\n",
 			err);
-		return err;
+		goto output_exit;
 	}
 
 	err = regulator_enable(hdmi->pll);
 	if (err < 0) {
 		dev_err(hdmi->dev, "failed to enable PLL regulator: %d\n", err);
-		return err;
+		goto disable_hdmi;
 	}
 
 	err = regulator_enable(hdmi->vdd);
 	if (err < 0) {
 		dev_err(hdmi->dev, "failed to enable VDD regulator: %d\n", err);
-		return err;
+		goto disable_pll;
 	}
 
 	return 0;
+
+disable_pll:
+	regulator_disable(hdmi->pll);
+disable_hdmi:
+	regulator_disable(hdmi->hdmi);
+output_exit:
+	tegra_output_exit(&hdmi->output);
+
+	return err;
 }
 
 static int tegra_hdmi_exit(struct host1x_client *client)
-- 
2.33.1

[PATCH v4 15/22] drm/tegra: hdmi: Register audio CODEC on Tegra20

[Dmitry Osipenko]

Tegra20 SoC supports only S/PDIF source for HDMI audio. Register ASoC HDMI
S/PDIF CODEC for Tegra20, it will be linked with the S/PDIF CPU DAI.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 drivers/gpu/drm/tegra/Kconfig |   3 +
 drivers/gpu/drm/tegra/hdmi.c  | 153 +++++++++++++++++++++++++++++++---
 2 files changed, 145 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/tegra/Kconfig b/drivers/gpu/drm/tegra/Kconfig
index 32fe64553d2e..40f0d14cb240 100644
--- a/drivers/gpu/drm/tegra/Kconfig
+++ b/drivers/gpu/drm/tegra/Kconfig
@@ -13,6 +13,9 @@ config DRM_TEGRA_ORIG
 	select INTERCONNECT
 	select IOMMU_IOVA
 	select CEC_CORE if CEC_NOTIFIER
+	select SND_SIMPLE_CARD if SND_SOC_TEGRA20_SPDIF
+	select SND_SOC_HDMI_CODEC if SND_SOC_TEGRA20_SPDIF
+	select SND_AUDIO_GRAPH_CARD if SND_SOC_TEGRA20_SPDIF
 	help
 	  Choose this option if you have an NVIDIA Tegra SoC.
 
diff --git a/drivers/gpu/drm/tegra/hdmi.c b/drivers/gpu/drm/tegra/hdmi.c
index cc42476fd023..5353f83cbee8 100644
--- a/drivers/gpu/drm/tegra/hdmi.c
+++ b/drivers/gpu/drm/tegra/hdmi.c
@@ -18,6 +18,8 @@
 
 #include <soc/tegra/common.h>
 
+#include <sound/hdmi-codec.h>
+
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_crtc.h>
 #include <drm/drm_debugfs.h>
@@ -81,6 +83,9 @@ struct tegra_hdmi {
 	bool dvi;
 
 	struct drm_info_list *debugfs_files;
+
+	struct platform_device *audio_pdev;
+	struct mutex audio_lock;
 };
 
 static inline struct tegra_hdmi *
@@ -363,6 +368,18 @@ static const struct tmds_config tegra124_tmds_config[] = {
 	},
 };
 
+static void tegra_hdmi_audio_lock(struct tegra_hdmi *hdmi)
+{
+	mutex_lock(&hdmi->audio_lock);
+	disable_irq(hdmi->irq);
+}
+
+static void tegra_hdmi_audio_unlock(struct tegra_hdmi *hdmi)
+{
+	enable_irq(hdmi->irq);
+	mutex_unlock(&hdmi->audio_lock);
+}
+
 static int
 tegra_hdmi_get_audio_config(unsigned int audio_freq, unsigned int pix_clock,
 			    struct tegra_hdmi_audio_config *config)
@@ -832,6 +849,23 @@ static void tegra_hdmi_setup_tmds(struct tegra_hdmi *hdmi,
 				  HDMI_NV_PDISP_SOR_IO_PEAK_CURRENT);
 }
 
+static int tegra_hdmi_reconfigure_audio(struct tegra_hdmi *hdmi)
+{
+	int err;
+
+	err = tegra_hdmi_setup_audio(hdmi);
+	if (err < 0) {
+		tegra_hdmi_disable_audio_infoframe(hdmi);
+		tegra_hdmi_disable_audio(hdmi);
+	} else {
+		tegra_hdmi_setup_audio_infoframe(hdmi);
+		tegra_hdmi_enable_audio_infoframe(hdmi);
+		tegra_hdmi_enable_audio(hdmi);
+	}
+
+	return err;
+}
+
 static bool tegra_output_is_hdmi(struct tegra_output *output)
 {
 	struct edid *edid;
@@ -1138,6 +1172,8 @@ static void tegra_hdmi_encoder_disable(struct drm_encoder *encoder)
 	u32 value;
 	int err;
 
+	tegra_hdmi_audio_lock(hdmi);
+
 	/*
 	 * The following accesses registers of the display controller, so make
 	 * sure it's only executed when the output is attached to one.
@@ -1162,6 +1198,10 @@ static void tegra_hdmi_encoder_disable(struct drm_encoder *encoder)
 	tegra_hdmi_writel(hdmi, 0, HDMI_NV_PDISP_INT_ENABLE);
 	tegra_hdmi_writel(hdmi, 0, HDMI_NV_PDISP_INT_MASK);
 
+	hdmi->pixel_clock = 0;
+
+	tegra_hdmi_audio_unlock(hdmi);
+
 	err = host1x_client_suspend(&hdmi->client);
 	if (err < 0)
 		dev_err(hdmi->dev, "failed to suspend: %d\n", err);
@@ -1185,6 +1225,8 @@ static void tegra_hdmi_encoder_enable(struct drm_encoder *encoder)
 		return;
 	}
 
+	tegra_hdmi_audio_lock(hdmi);
+
 	/*
 	 * Enable and unmask the HDA codec SCRATCH0 register interrupt. This
 	 * is used for interoperability between the HDA codec driver and the
@@ -1390,6 +1432,8 @@ static void tegra_hdmi_encoder_enable(struct drm_encoder *encoder)
 	}
 
 	/* TODO: add HDCP support */
+
+	tegra_hdmi_audio_unlock(hdmi);
 }
 
 static int
@@ -1419,6 +1463,91 @@ static const struct drm_encoder_helper_funcs tegra_hdmi_encoder_helper_funcs = {
 	.atomic_check = tegra_hdmi_encoder_atomic_check,
 };
 
+static int tegra_hdmi_hw_params(struct device *dev, void *data,
+				struct hdmi_codec_daifmt *fmt,
+				struct hdmi_codec_params *hparms)
+{
+	struct tegra_hdmi *hdmi = data;
+	int ret = 0;
+
+	tegra_hdmi_audio_lock(hdmi);
+
+	hdmi->format.sample_rate = hparms->sample_rate;
+	hdmi->format.channels = hparms->channels;
+
+	if (hdmi->pixel_clock && !hdmi->dvi)
+		ret = tegra_hdmi_reconfigure_audio(hdmi);
+
+	tegra_hdmi_audio_unlock(hdmi);
+
+	return ret;
+}
+
+static int tegra_hdmi_audio_startup(struct device *dev, void *data)
+{
+	struct tegra_hdmi *hdmi = data;
+	int ret;
+
+	ret = host1x_client_resume(&hdmi->client);
+	if (ret < 0)
+		dev_err(hdmi->dev, "failed to resume: %d\n", ret);
+
+	return ret;
+}
+
+static void tegra_hdmi_audio_shutdown(struct device *dev, void *data)
+{
+	struct tegra_hdmi *hdmi = data;
+	int ret;
+
+	tegra_hdmi_audio_lock(hdmi);
+
+	hdmi->format.sample_rate = 0;
+	hdmi->format.channels = 0;
+
+	tegra_hdmi_audio_unlock(hdmi);
+
+	ret = host1x_client_suspend(&hdmi->client);
+	if (ret < 0)
+		dev_err(hdmi->dev, "failed to suspend: %d\n", ret);
+}
+
+static const struct hdmi_codec_ops tegra_hdmi_codec_ops = {
+	.hw_params = tegra_hdmi_hw_params,
+	.audio_startup = tegra_hdmi_audio_startup,
+	.audio_shutdown = tegra_hdmi_audio_shutdown,
+};
+
+static int tegra_hdmi_codec_register(struct tegra_hdmi *hdmi)
+{
+	struct hdmi_codec_pdata codec_data = {};
+
+	if (hdmi->config->has_hda)
+		return 0;
+
+	codec_data.ops = &tegra_hdmi_codec_ops;
+	codec_data.data = hdmi;
+	codec_data.spdif = 1;
+
+	hdmi->audio_pdev = platform_device_register_data(hdmi->dev,
+							 HDMI_CODEC_DRV_NAME,
+							 PLATFORM_DEVID_AUTO,
+							 &codec_data,
+							 sizeof(codec_data));
+	if (IS_ERR(hdmi->audio_pdev))
+		return PTR_ERR(hdmi->audio_pdev);
+
+	hdmi->format.channels = 2;
+
+	return 0;
+}
+
+static void tegra_hdmi_codec_unregister(struct tegra_hdmi *hdmi)
+{
+	if (hdmi->audio_pdev)
+		platform_device_unregister(hdmi->audio_pdev);
+}
+
 static int tegra_hdmi_init(struct host1x_client *client)
 {
 	struct tegra_hdmi *hdmi = host1x_client_to_hdmi(client);
@@ -1471,8 +1600,16 @@ static int tegra_hdmi_init(struct host1x_client *client)
 		goto disable_pll;
 	}
 
+	err = tegra_hdmi_codec_register(hdmi);
+	if (err < 0) {
+		dev_err(hdmi->dev, "failed to register audio codec: %d\n", err);
+		goto disable_vdd;
+	}
+
 	return 0;
 
+disable_vdd:
+	regulator_disable(hdmi->vdd);
 disable_pll:
 	regulator_disable(hdmi->pll);
 disable_hdmi:
@@ -1487,6 +1624,8 @@ static int tegra_hdmi_exit(struct host1x_client *client)
 {
 	struct tegra_hdmi *hdmi = host1x_client_to_hdmi(client);
 
+	tegra_hdmi_codec_unregister(hdmi);
+
 	tegra_output_exit(&hdmi->output);
 
 	regulator_disable(hdmi->vdd);
@@ -1611,7 +1750,6 @@ static irqreturn_t tegra_hdmi_irq(int irq, void *data)
 {
 	struct tegra_hdmi *hdmi = data;
 	u32 value;
-	int err;
 
 	value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_INT_STATUS);
 	tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_INT_STATUS);
@@ -1626,16 +1764,7 @@ static irqreturn_t tegra_hdmi_irq(int irq, void *data)
 			format = value & SOR_AUDIO_HDA_CODEC_SCRATCH0_FMT_MASK;
 
 			tegra_hda_parse_format(format, &hdmi->format);
-
-			err = tegra_hdmi_setup_audio(hdmi);
-			if (err < 0) {
-				tegra_hdmi_disable_audio_infoframe(hdmi);
-				tegra_hdmi_disable_audio(hdmi);
-			} else {
-				tegra_hdmi_setup_audio_infoframe(hdmi);
-				tegra_hdmi_enable_audio_infoframe(hdmi);
-				tegra_hdmi_enable_audio(hdmi);
-			}
+			tegra_hdmi_reconfigure_audio(hdmi);
 		} else {
 			tegra_hdmi_disable_audio_infoframe(hdmi);
 			tegra_hdmi_disable_audio(hdmi);
@@ -1662,6 +1791,8 @@ static int tegra_hdmi_probe(struct platform_device *pdev)
 	hdmi->stereo = false;
 	hdmi->dvi = false;
 
+	mutex_init(&hdmi->audio_lock);
+
 	hdmi->clk = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(hdmi->clk)) {
 		dev_err(&pdev->dev, "failed to get clock\n");
-- 
2.33.1

[PATCH v4 16/22] ARM: tegra_defconfig: Enable S/PDIF driver

[Dmitry Osipenko]

Enable Tegra20 S/PDIF driver. It's a part of HDMI audio subsystem on
Tegra.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 arch/arm/configs/tegra_defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/configs/tegra_defconfig b/arch/arm/configs/tegra_defconfig
index 736a0d25900b..f8b40cfdfb3e 100644
--- a/arch/arm/configs/tegra_defconfig
+++ b/arch/arm/configs/tegra_defconfig
@@ -239,6 +239,7 @@ CONFIG_SND_HDA_CODEC_HDMI=y
 CONFIG_SND_SOC=y
 CONFIG_SND_SOC_TEGRA=y
 CONFIG_SND_SOC_TEGRA20_I2S=y
+CONFIG_SND_SOC_TEGRA20_SPDIF=y
 CONFIG_SND_SOC_TEGRA30_I2S=y
 CONFIG_SND_SOC_TEGRA_RT5640=y
 CONFIG_SND_SOC_TEGRA_WM8753=y
-- 
2.33.1

[PATCH v4 17/22] ARM: config: multi v7: Enable NVIDIA Tegra20 S/PDIF driver

[Dmitry Osipenko]

Enable Tegra20 S/PDIF driver that is a part of HDMI audio subsystem.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 arch/arm/configs/multi_v7_defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig
index 3d509bc13444..172838566ecd 100644
--- a/arch/arm/configs/multi_v7_defconfig
+++ b/arch/arm/configs/multi_v7_defconfig
@@ -762,6 +762,7 @@ CONFIG_SND_SOC_STM32_DFSDM=m
 CONFIG_SND_SUN4I_CODEC=m
 CONFIG_SND_SOC_TEGRA=m
 CONFIG_SND_SOC_TEGRA20_I2S=m
+CONFIG_SND_SOC_TEGRA20_SPDIF=m
 CONFIG_SND_SOC_TEGRA30_I2S=m
 CONFIG_SND_SOC_TEGRA_RT5640=m
 CONFIG_SND_SOC_TEGRA_WM8753=m
-- 
2.33.1

[PATCH v4 18/22] ARM: config: multi v7: Enable NVIDIA Tegra20 APB DMA driver

[Dmitry Osipenko]

All Tegra20/30/114 serial and audio drivers depend on the Tegra20 APB DMA
driver, enable this DMA driver.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 arch/arm/configs/multi_v7_defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig
index 172838566ecd..8863fa969ede 100644
--- a/arch/arm/configs/multi_v7_defconfig
+++ b/arch/arm/configs/multi_v7_defconfig
@@ -958,6 +958,7 @@ CONFIG_ST_FDMA=m
 CONFIG_STM32_DMA=y
 CONFIG_STM32_DMAMUX=y
 CONFIG_STM32_MDMA=y
+CONFIG_TEGRA20_APB_DMA=y
 CONFIG_UNIPHIER_MDMAC=y
 CONFIG_XILINX_DMA=y
 CONFIG_QCOM_BAM_DMA=y
-- 
2.33.1

[PATCH v4 19/22] ARM: tegra: Add S/PDIF node to Tegra20 device-tree

[Dmitry Osipenko]

Add S/PDIF node to Tegra20 device-tree. It's needed for enabling HDMI
audio support.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 arch/arm/boot/dts/tegra20.dtsi | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/arch/arm/boot/dts/tegra20.dtsi b/arch/arm/boot/dts/tegra20.dtsi
index 63c2c2f8c0ce..72cbe32d0c1d 100644
--- a/arch/arm/boot/dts/tegra20.dtsi
+++ b/arch/arm/boot/dts/tegra20.dtsi
@@ -197,6 +197,7 @@ hdmi@54280000 {
 			reset-names = "hdmi";
 			power-domains = <&pd_core>;
 			operating-points-v2 = <&hdmi_dvfs_opp_table>;
+			#sound-dai-cells = <0>;
 			status = "disabled";
 		};
 
@@ -396,6 +397,23 @@ tegra_ac97: ac97@70002000 {
 		status = "disabled";
 	};
 
+	tegra_spdif: spdif@70002400 {
+		compatible = "nvidia,tegra20-spdif";
+		reg = <0x70002400 0x200>;
+		interrupts = <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&tegra_car TEGRA20_CLK_SPDIF_OUT>,
+			 <&tegra_car TEGRA20_CLK_SPDIF_IN>;
+		clock-names = "out", "in";
+		resets = <&tegra_car 10>;
+		dmas = <&apbdma 3>, <&apbdma 3>;
+		dma-names = "rx", "tx";
+		#sound-dai-cells = <0>;
+		status = "disabled";
+
+		assigned-clocks = <&tegra_car TEGRA20_CLK_SPDIF_OUT>;
+		assigned-clock-parents = <&tegra_car TEGRA20_CLK_PLL_A_OUT0>;
+	};
+
 	tegra_i2s1: i2s@70002800 {
 		compatible = "nvidia,tegra20-i2s";
 		reg = <0x70002800 0x200>;
-- 
2.33.1

[PATCH v4 20/22] ARM: tegra: Add HDMI audio graph to Tegra20 device-tree

[Dmitry Osipenko]

Add HDMI audio graph to Tegra20 device-tree to enable HDMI audio on
Tegra20 devices.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 arch/arm/boot/dts/tegra20.dtsi | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/tegra20.dtsi b/arch/arm/boot/dts/tegra20.dtsi
index 72cbe32d0c1d..dde228bcbbff 100644
--- a/arch/arm/boot/dts/tegra20.dtsi
+++ b/arch/arm/boot/dts/tegra20.dtsi
@@ -186,7 +186,7 @@ rgb {
 			};
 		};
 
-		hdmi@54280000 {
+		tegra_hdmi: hdmi@54280000 {
 			compatible = "nvidia,tegra20-hdmi";
 			reg = <0x54280000 0x00040000>;
 			interrupts = <GIC_SPI 75 IRQ_TYPE_LEVEL_HIGH>;
@@ -1063,4 +1063,24 @@ pmu {
 		interrupt-affinity = <&{/cpus/cpu@0}>,
 				     <&{/cpus/cpu@1}>;
 	};
+
+	sound-hdmi {
+		compatible = "simple-audio-card";
+		simple-audio-card,name = "NVIDIA Tegra20 HDMI";
+
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		simple-audio-card,dai-link@0 {
+			reg = <0>;
+
+			cpu {
+				sound-dai = <&tegra_spdif>;
+			};
+
+			codec {
+				sound-dai = <&tegra_hdmi>;
+			};
+		};
+	};
 };
-- 
2.33.1

[PATCH v4 21/22] ARM: tegra: acer-a500: Enable S/PDIF and HDMI audio

[Dmitry Osipenko]

Enable S/PDIF controller to enable HDMI audio support on Acer A500.
Use nvidia,fixed-parent-rate property that prevents audio rate conflict
between S/PDIF and I2S.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 arch/arm/boot/dts/tegra20-acer-a500-picasso.dts | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm/boot/dts/tegra20-acer-a500-picasso.dts b/arch/arm/boot/dts/tegra20-acer-a500-picasso.dts
index db388ddd062f..f47b946627c3 100644
--- a/arch/arm/boot/dts/tegra20-acer-a500-picasso.dts
+++ b/arch/arm/boot/dts/tegra20-acer-a500-picasso.dts
@@ -376,8 +376,16 @@ pta {
 		};
 	};
 
+	tegra_spdif: spdif@70002400 {
+		status = "okay";
+
+		nvidia,fixed-parent-rate;
+	};
+
 	tegra_i2s1: i2s@70002800 {
 		status = "okay";
+
+		nvidia,fixed-parent-rate;
 	};
 
 	uartb: serial@70006040 {
-- 
2.33.1

[PATCH v4 22/22] ARM: tegra: paz00: Enable S/PDIF and HDMI audio

[Dmitry Osipenko]

Enable S/PDIF controller to enable HDMI audio support on Toshiba AC100.
Use nvidia,fixed-parent-rate property that prevents audio rate conflict
between S/PDIF and I2S.

Tested-by: Agneli <poczt@protonmail.ch>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 arch/arm/boot/dts/tegra20-paz00.dts | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm/boot/dts/tegra20-paz00.dts b/arch/arm/boot/dts/tegra20-paz00.dts
index 5b2260f61f05..921a811632a1 100644
--- a/arch/arm/boot/dts/tegra20-paz00.dts
+++ b/arch/arm/boot/dts/tegra20-paz00.dts
@@ -264,8 +264,16 @@ conf_ld17_0 {
 		};
 	};
 
+	spdif@70002400 {
+		status = "okay";
+
+		nvidia,fixed-parent-rate;
+	};
+
 	i2s@70002800 {
 		status = "okay";
+
+		nvidia,fixed-parent-rate;
 	};
 
 	serial@70006000 {
-- 
2.33.1

Re: [PATCH v4 00/22] Support HDMI audio on NVIDIA Tegra20

[Mark Brown]

[-- Attachment #1: Type: text/plain, Size: 900 bytes --]

On Sat, Dec 04, 2021 at 05:37:03PM +0300, Dmitry Osipenko wrote:

> I based S/PDIF patches on Arnd's Bergmann patch from a separate series [1]
> that removes obsolete slave_id. This eases merging of the patches by
> removing the merge conflict. This is a note for Mark Brown.

That's not in my tree so I'll need either a pull request with the series
or a resend after the merge window.  It's also not clear what to do
about the DRM bits, I guess it's probably easiest to just apply them
along with the ASoC patches.

Please include human readable descriptions of things like commits and
issues being discussed in e-mail in your mails, this makes them much
easier for humans to read especially when they have no internet access.
I do frequently catch up on my mail on flights or while otherwise
travelling so this is even more pressing for me than just being about
making things a bit easier to read.

[-- Attachment #2: signature.asc --]
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Re: [PATCH v4 00/22] Support HDMI audio on NVIDIA Tegra20

[Dmitry Osipenko]

15.12.2021 21:57, Mark Brown пишет:
> On Sat, Dec 04, 2021 at 05:37:03PM +0300, Dmitry Osipenko wrote:
> 
>> I based S/PDIF patches on Arnd's Bergmann patch from a separate series [1]
>> that removes obsolete slave_id. This eases merging of the patches by
>> removing the merge conflict. This is a note for Mark Brown.
> 
> That's not in my tree so I'll need either a pull request with the series
> or a resend after the merge window.

This patch is included as a part of this series, please see the patch #6.

I saw that Vinod Koul already merged it into his DMA tree [1] a day ago,
but there is no stable branch there.

[1]
https://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine.git/log/?h=next

>  It's also not clear what to do
> about the DRM bits, I guess it's probably easiest to just apply them
> along with the ASoC patches.

I already asked Thierry Reding to take a look at this patchset. He will
let to you know how the DRM bits should be handled. Hopefully this
should happen tomorrow.

We will know how to move forward if Vinod and Thierry will reply ASAP.
Otherwise this series will have to wait for the next cycle.

> Please include human readable descriptions of things like commits and
> issues being discussed in e-mail in your mails, this makes them much
> easier for humans to read especially when they have no internet access.
> I do frequently catch up on my mail on flights or while otherwise
> travelling so this is even more pressing for me than just being about
> making things a bit easier to read.
> 

Noted; I see now that it's indeed not clear from the cover letter that I
included Arnd's patch into this patchset, sorry about that. I assumed
that you will notice this after looking through the patches.

Re: [PATCH v4 00/22] Support HDMI audio on NVIDIA Tegra20

[Mark Brown]

[-- Attachment #1: Type: text/plain, Size: 1055 bytes --]

On Wed, Dec 15, 2021 at 10:19:07PM +0300, Dmitry Osipenko wrote:
> 15.12.2021 21:57, Mark Brown пишет:

> > Please include human readable descriptions of things like commits and
> > issues being discussed in e-mail in your mails, this makes them much
> > easier for humans to read especially when they have no internet access.
> > I do frequently catch up on my mail on flights or while otherwise
> > travelling so this is even more pressing for me than just being about
> > making things a bit easier to read.

> Noted; I see now that it's indeed not clear from the cover letter that I
> included Arnd's patch into this patchset, sorry about that. I assumed
> that you will notice this after looking through the patches.

It's a pretty long series and having to open a link to figure out what
patch is being talked about puts an additional barrier to remembering
the specific patch at the time dependencies are being considered (which
might not be at the same time as things are reviewed, especially if
other reviews are likely).

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Re: [PATCH v4 20/22] ARM: tegra: Add HDMI audio graph to Tegra20 device-tree

[Thierry Reding]

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On Sat, Dec 04, 2021 at 05:37:23PM +0300, Dmitry Osipenko wrote:
> Add HDMI audio graph to Tegra20 device-tree to enable HDMI audio on
> Tegra20 devices.
> 
> Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
> ---
>  arch/arm/boot/dts/tegra20.dtsi | 22 +++++++++++++++++++++-
>  1 file changed, 21 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm/boot/dts/tegra20.dtsi b/arch/arm/boot/dts/tegra20.dtsi
> index 72cbe32d0c1d..dde228bcbbff 100644
> --- a/arch/arm/boot/dts/tegra20.dtsi
> +++ b/arch/arm/boot/dts/tegra20.dtsi
> @@ -186,7 +186,7 @@ rgb {
>  			};
>  		};
>  
> -		hdmi@54280000 {
> +		tegra_hdmi: hdmi@54280000 {
>  			compatible = "nvidia,tegra20-hdmi";
>  			reg = <0x54280000 0x00040000>;
>  			interrupts = <GIC_SPI 75 IRQ_TYPE_LEVEL_HIGH>;
> @@ -1063,4 +1063,24 @@ pmu {
>  		interrupt-affinity = <&{/cpus/cpu@0}>,
>  				     <&{/cpus/cpu@1}>;
>  	};
> +
> +	sound-hdmi {
> +		compatible = "simple-audio-card";
> +		simple-audio-card,name = "NVIDIA Tegra20 HDMI";
> +
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		simple-audio-card,dai-link@0 {
> +			reg = <0>;
> +
> +			cpu {
> +				sound-dai = <&tegra_spdif>;
> +			};
> +
> +			codec {
> +				sound-dai = <&tegra_hdmi>;
> +			};
> +		};
> +	};

Should this be status = "disabled" and then only enabled for platforms
that actually enable HDMI?

Thierry

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Re: [PATCH v4 00/22] Support HDMI audio on NVIDIA Tegra20

[Thierry Reding]

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On Wed, Dec 15, 2021 at 10:19:07PM +0300, Dmitry Osipenko wrote:
> 15.12.2021 21:57, Mark Brown пишет:
> > On Sat, Dec 04, 2021 at 05:37:03PM +0300, Dmitry Osipenko wrote:
> > 
> >> I based S/PDIF patches on Arnd's Bergmann patch from a separate series [1]
> >> that removes obsolete slave_id. This eases merging of the patches by
> >> removing the merge conflict. This is a note for Mark Brown.
> > 
> > That's not in my tree so I'll need either a pull request with the series
> > or a resend after the merge window.
> 
> This patch is included as a part of this series, please see the patch #6.
> 
> I saw that Vinod Koul already merged it into his DMA tree [1] a day ago,
> but there is no stable branch there.
> 
> [1]
> https://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine.git/log/?h=next
> 
> >  It's also not clear what to do
> > about the DRM bits, I guess it's probably easiest to just apply them
> > along with the ASoC patches.
> 
> I already asked Thierry Reding to take a look at this patchset. He will
> let to you know how the DRM bits should be handled. Hopefully this
> should happen tomorrow.
> 
> We will know how to move forward if Vinod and Thierry will reply ASAP.
> Otherwise this series will have to wait for the next cycle.

I've applied the DRM patches to the drm/tegra tree and pulled in the ARM
device tree changes into the Tegra tree. I think the rest can go through
ASoC. Well, provided you can sort out the patch 6 issue with Vinod.

Thierry

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Re: [PATCH v4 01/22] ASoC: dt-bindings: Add binding for Tegra20 S/PDIF

[Thierry Reding]

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On Sat, Dec 04, 2021 at 05:37:04PM +0300, Dmitry Osipenko wrote:
> Add device-tree binding for Tegra20 S/PDIF controller.
> 
> Reviewed-by: Rob Herring <robh@kernel.org>
> Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
> ---
>  .../bindings/sound/nvidia,tegra20-spdif.yaml  | 85 +++++++++++++++++++
>  1 file changed, 85 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/sound/nvidia,tegra20-spdif.yaml

Acked-by: Thierry Reding <treding@nvidia.com>

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Re: [PATCH v4 02/22] ASoC: dt-bindings: tegra20-i2s: Convert to schema

[Thierry Reding]

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On Sat, Dec 04, 2021 at 05:37:05PM +0300, Dmitry Osipenko wrote:
> Convert NVIDIA Tegra20 I2S binding to schema.
> 
> Reviewed-by: Rob Herring <robh@kernel.org>
> Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
> ---
>  .../bindings/sound/nvidia,tegra20-i2s.txt     | 30 --------
>  .../bindings/sound/nvidia,tegra20-i2s.yaml    | 70 +++++++++++++++++++
>  2 files changed, 70 insertions(+), 30 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.txt
>  create mode 100644 Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.yaml
> 
> diff --git a/Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.txt b/Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.txt
> deleted file mode 100644
> index dc30c6bfbe95..000000000000
> --- a/Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.txt
> +++ /dev/null
> @@ -1,30 +0,0 @@
> -NVIDIA Tegra 20 I2S controller
> -
> -Required properties:
> -- compatible : "nvidia,tegra20-i2s"
> -- reg : Should contain I2S registers location and length
> -- interrupts : Should contain I2S interrupt
> -- resets : Must contain an entry for each entry in reset-names.
> -  See ../reset/reset.txt for details.
> -- reset-names : Must include the following entries:
> -  - i2s
> -- dmas : Must contain an entry for each entry in clock-names.
> -  See ../dma/dma.txt for details.
> -- dma-names : Must include the following entries:
> -  - rx
> -  - tx
> -- clocks : Must contain one entry, for the module clock.
> -  See ../clocks/clock-bindings.txt for details.
> -
> -Example:
> -
> -i2s@70002800 {
> -	compatible = "nvidia,tegra20-i2s";
> -	reg = <0x70002800 0x200>;
> -	interrupts = < 45 >;
> -	clocks = <&tegra_car 11>;
> -	resets = <&tegra_car 11>;
> -	reset-names = "i2s";
> -	dmas = <&apbdma 21>, <&apbdma 21>;
> -	dma-names = "rx", "tx";
> -};
> diff --git a/Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.yaml b/Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.yaml
> new file mode 100644
> index 000000000000..ad43b237d9af
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.yaml
> @@ -0,0 +1,70 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/sound/nvidia,tegra20-i2s.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: NVIDIA Tegra20 I2S Controller
> +
> +description: |
> +  The I2S Controller streams synchronous serial audio data between system
> +  memory and an external audio device. The controller supports the I2S Left
> +  Justified Mode, Right Justified Mode, and DSP mode formats.
> +
> +maintainers:
> +  - Thierry Reding <treding@nvidia.com>
> +  - Jon Hunter <jonathanh@nvidia.com>
> +
> +properties:
> +  compatible:
> +    const: nvidia,tegra20-i2s
> +
> +  reg:
> +    maxItems: 1
> +
> +  resets:
> +    maxItems: 1
> +
> +  reset-names:
> +    const: i2s
> +
> +  interrupts:
> +    maxItems: 1

I prefer ordering these by the same order that we typically have in
device tree, so "compatible", "reg", "interrupts", "clocks",
"clock-names", "resets", "reset-names", "dmas", "dma-names". I find
that clearer because it lists the common properties at the top and
the less common ones (such as "dmas") at the bottom.

Anyway, it doesn't really matter, so:

Acked-by: Thierry Reding <treding@nvidia.com>

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Re: [PATCH v4 04/22] dt-bindings: host1x: Document optional HDMI sound-dai-cells

[Thierry Reding]

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On Sat, Dec 04, 2021 at 05:37:07PM +0300, Dmitry Osipenko wrote:
> Document new optional sound-dai-cells property of HDMI node. This node will
> be used as endpoint of HDMI sound DAI graph.
> 
> Acked-by: Rob Herring <robh@kernel.org>
> Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
> ---
>  .../devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt  | 1 +
>  1 file changed, 1 insertion(+)

It's probably best for this to go through ASoC along with the other
audio-related bindings.

Alternatively, I've just sent out a patch that converts the host1x
bindings to json-schema, so I could work this into that as well.

Thierry

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Re: [PATCH v4 20/22] ARM: tegra: Add HDMI audio graph to Tegra20 device-tree

[Dmitry Osipenko]

16.12.2021 16:46, Thierry Reding пишет:
> On Sat, Dec 04, 2021 at 05:37:23PM +0300, Dmitry Osipenko wrote:
>> Add HDMI audio graph to Tegra20 device-tree to enable HDMI audio on
>> Tegra20 devices.
>>
>> Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
>> ---
>>  arch/arm/boot/dts/tegra20.dtsi | 22 +++++++++++++++++++++-
>>  1 file changed, 21 insertions(+), 1 deletion(-)
>>
>> diff --git a/arch/arm/boot/dts/tegra20.dtsi b/arch/arm/boot/dts/tegra20.dtsi
>> index 72cbe32d0c1d..dde228bcbbff 100644
>> --- a/arch/arm/boot/dts/tegra20.dtsi
>> +++ b/arch/arm/boot/dts/tegra20.dtsi
>> @@ -186,7 +186,7 @@ rgb {
>>  			};
>>  		};
>>  
>> -		hdmi@54280000 {
>> +		tegra_hdmi: hdmi@54280000 {
>>  			compatible = "nvidia,tegra20-hdmi";
>>  			reg = <0x54280000 0x00040000>;
>>  			interrupts = <GIC_SPI 75 IRQ_TYPE_LEVEL_HIGH>;
>> @@ -1063,4 +1063,24 @@ pmu {
>>  		interrupt-affinity = <&{/cpus/cpu@0}>,
>>  				     <&{/cpus/cpu@1}>;
>>  	};
>> +
>> +	sound-hdmi {
>> +		compatible = "simple-audio-card";
>> +		simple-audio-card,name = "NVIDIA Tegra20 HDMI";
>> +
>> +		#address-cells = <1>;
>> +		#size-cells = <0>;
>> +
>> +		simple-audio-card,dai-link@0 {
>> +			reg = <0>;
>> +
>> +			cpu {
>> +				sound-dai = <&tegra_spdif>;
>> +			};
>> +
>> +			codec {
>> +				sound-dai = <&tegra_hdmi>;
>> +			};
>> +		};
>> +	};
> 
> Should this be status = "disabled" and then only enabled for platforms
> that actually enable HDMI?

Assuming that HDMI node is disabled, we assume that the card won't be
initialized. It won't be a problem to restructure this card in DT later
on if we will have any other use-cases than we currently have, but this
is unlikely to happen in practice.

Re: [PATCH v4 00/22] Support HDMI audio on NVIDIA Tegra20

[Dmitry Osipenko]

15.12.2021 22:19, Dmitry Osipenko пишет:
> 15.12.2021 21:57, Mark Brown пишет:
>> On Sat, Dec 04, 2021 at 05:37:03PM +0300, Dmitry Osipenko wrote:
>>
>>> I based S/PDIF patches on Arnd's Bergmann patch from a separate series [1]
>>> that removes obsolete slave_id. This eases merging of the patches by
>>> removing the merge conflict. This is a note for Mark Brown.
>> That's not in my tree so I'll need either a pull request with the series
>> or a resend after the merge window.
> This patch is included as a part of this series, please see the patch #6.
> 
> I saw that Vinod Koul already merged it into his DMA tree [1] a day ago,
> but there is no stable branch there.
> 
> [1]
> https://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine.git/log/?h=next
> 

Vinod, will you be a able to create immutable branch for us with the
"dmaengine: kill off dma_slave_config->slave_id" patches [1]?

[1] https://lore.kernel.org/all/20211122222203.4103644-1-arnd@kernel.org/

Re: [PATCH v4 00/22] Support HDMI audio on NVIDIA Tegra20

[Dmitry Osipenko]

16.12.2021 16:55, Thierry Reding пишет:
> On Wed, Dec 15, 2021 at 10:19:07PM +0300, Dmitry Osipenko wrote:
>> 15.12.2021 21:57, Mark Brown пишет:
>>> On Sat, Dec 04, 2021 at 05:37:03PM +0300, Dmitry Osipenko wrote:
>>>
>>>> I based S/PDIF patches on Arnd's Bergmann patch from a separate series [1]
>>>> that removes obsolete slave_id. This eases merging of the patches by
>>>> removing the merge conflict. This is a note for Mark Brown.
>>>
>>> That's not in my tree so I'll need either a pull request with the series
>>> or a resend after the merge window.
>>
>> This patch is included as a part of this series, please see the patch #6.
>>
>> I saw that Vinod Koul already merged it into his DMA tree [1] a day ago,
>> but there is no stable branch there.
>>
>> [1]
>> https://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine.git/log/?h=next
>>
>>>  It's also not clear what to do
>>> about the DRM bits, I guess it's probably easiest to just apply them
>>> along with the ASoC patches.
>>
>> I already asked Thierry Reding to take a look at this patchset. He will
>> let to you know how the DRM bits should be handled. Hopefully this
>> should happen tomorrow.
>>
>> We will know how to move forward if Vinod and Thierry will reply ASAP.
>> Otherwise this series will have to wait for the next cycle.
> 
> I've applied the DRM patches to the drm/tegra tree and pulled in the ARM
> device tree changes into the Tegra tree. I think the rest can go through
> ASoC. Well, provided you can sort out the patch 6 issue with Vinod.

Thank you!

Re: [PATCH v4 05/22] ASoC: tegra20: spdif: Set FIFO trigger level

[Thierry Reding]

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On Sat, Dec 04, 2021 at 05:37:08PM +0300, Dmitry Osipenko wrote:
> FIFO trigger level must be not less than the size of DMA burst, otherwise

"must be bigger than or equal to"?

> audio will be played x4 faster that it should be because part of the DMA

"faster than"

> data will be dropped on FIFO input buffer overflow.
> 
> Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
> ---
>  sound/soc/tegra/tegra20_spdif.c | 8 ++++++++
>  1 file changed, 8 insertions(+)

Makes sense:

Acked-by: Thierry Reding <treding@nvidia.com>

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Re: [PATCH v4 06/22] ASoC: tegra20-spdif: stop setting slave_id

[Thierry Reding]

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On Sat, Dec 04, 2021 at 05:37:09PM +0300, Dmitry Osipenko wrote:
> From: Arnd Bergmann <arnd@arndb.de>
> 
> The DMA resource is never set up anywhere, and passing this as slave_id
> has not been the proper procedure in a long time.
> 
> As a preparation for removing all slave_id references from the ALSA code,
> remove this one.
> 
> According to Dmitry Osipenko, this driver has never been used and
> the mechanism for configuring DMA would not work as it is implemented,
> so this part will get rewritten when the driver gets put into use
> again in the future.
> 
> Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
>  sound/soc/tegra/tegra20_spdif.c | 1 -
>  1 file changed, 1 deletion(-)

In case you want to pick this up into the ASoC tree and Vinod removes it
from the DMA tree:

Acked-by: Thierry Reding <treding@nvidia.com>

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Re: [PATCH v4 07/22] ASoC: tegra20: spdif: Support device-tree

[Thierry Reding]

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On Sat, Dec 04, 2021 at 05:37:10PM +0300, Dmitry Osipenko wrote:
> Tegra20 S/PDIF driver was added in a pre-DT era and was never used since
> that time. Revive driver by adding device-tree support.
> 
> Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
> ---
>  sound/soc/tegra/tegra20_spdif.c | 11 +++++++++--
>  1 file changed, 9 insertions(+), 2 deletions(-)

Acked-by: Thierry Reding <treding@nvidia.com>

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Re: [PATCH v4 08/22] ASoC: tegra20: spdif: Improve driver's code

[Thierry Reding]

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On Sat, Dec 04, 2021 at 05:37:11PM +0300, Dmitry Osipenko wrote:
> - Clean up whitespaces, defines and variables.
> 
> - Remove obsolete code.
> 
> - Adhere to upstream coding style.
> 
> - Don't override returned error code.
> 
> - Replace pr_err with dev_err.
> 
> No functional changes are made by this patch. This is a minor code's
> refactoring that will ease further maintenance of the driver.
> 
> Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
> ---
>  sound/soc/tegra/tegra20_spdif.c | 49 ++++++++++++---------------------
>  1 file changed, 18 insertions(+), 31 deletions(-)

Acked-by: Thierry Reding <treding@nvidia.com>

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Re: [PATCH v4 09/22] ASoC: tegra20: spdif: Use more resource-managed helpers

[Thierry Reding]

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On Sat, Dec 04, 2021 at 05:37:12PM +0300, Dmitry Osipenko wrote:
> Use resource-managed helpers to make code cleaner. Driver's remove callback
> isn't needed anymore since driver is completely resource-managed now.
> 
> Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
> ---
>  sound/soc/tegra/tegra20_spdif.c | 33 +++++++++------------------------
>  sound/soc/tegra/tegra_pcm.c     |  6 ++++++
>  sound/soc/tegra/tegra_pcm.h     |  1 +
>  3 files changed, 16 insertions(+), 24 deletions(-)

Acked-by: Thierry Reding <treding@nvidia.com>

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Re: [PATCH v4 10/22] ASoC: tegra20: spdif: Reset hardware

[Thierry Reding]

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On Sat, Dec 04, 2021 at 05:37:13PM +0300, Dmitry Osipenko wrote:
> Reset S/PDIF controller on runtime PM suspend/resume to ensure that we
> always have a consistent hardware state.
> 
> Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
> ---
>  sound/soc/tegra/tegra20_spdif.c | 32 ++++++++++++++++++++++++++++++++
>  sound/soc/tegra/tegra20_spdif.h |  1 +
>  2 files changed, 33 insertions(+)

Acked-by: Thierry Reding <treding@nvidia.com>

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Re: [PATCH v4 11/22] ASoC: tegra20: spdif: Support system suspend

[Thierry Reding]

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On Sat, Dec 04, 2021 at 05:37:14PM +0300, Dmitry Osipenko wrote:
> Support system suspend by enforcing runtime PM suspend/resume.
> Now there is no doubt that h/w is indeed stopped during suspend
> and that h/w state will be properly restored after resume.
> 
> Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
> ---
>  sound/soc/tegra/tegra20_spdif.c | 2 ++
>  1 file changed, 2 insertions(+)

Acked-by: Thierry Reding <treding@nvidia.com>

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Re: [PATCH v4 12/22] ASoC: tegra20: spdif: Filter out unsupported rates

[Thierry Reding]

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On Sat, Dec 04, 2021 at 05:37:15PM +0300, Dmitry Osipenko wrote:
> SPDIF and other SoC components share audio PLL on Tegra, thus only one
> component may set the desired base clock rate. This creates problem for
> HDMI audio because it uses SPDIF and audio may not work if SPDIF's clock
> doesn't exactly match standard audio rate since some receivers may reject
> audio in that case. Filter out audio rates which SPDIF output can't
> support, assuming that other components won't change rate at runtime.
> 
> Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
> ---
>  sound/soc/tegra/tegra20_spdif.c | 61 +++++++++++++++++++++++++++++++++
>  1 file changed, 61 insertions(+)
> 
> diff --git a/sound/soc/tegra/tegra20_spdif.c b/sound/soc/tegra/tegra20_spdif.c
> index a4aa5614aef4..d09cd7ee6879 100644
> --- a/sound/soc/tegra/tegra20_spdif.c
> +++ b/sound/soc/tegra/tegra20_spdif.c
> @@ -79,6 +79,7 @@ static int tegra20_spdif_hw_params(struct snd_pcm_substream *substream,
>  	struct tegra20_spdif *spdif = dev_get_drvdata(dai->dev);
>  	unsigned int mask = 0, val = 0;
>  	int ret, spdifclock;
> +	long rate;

Perhaps we should change spdifclock to be "long" as well, even though
they're the same on Tegra20. SND_SOC_TEGRA depends on || COMPILE_TEST,
so technically somebody could build this on 64-bit and then these are
no longer the same types.

Still shouldn't be problematic given the numbers that are passed in,
but it'd still be nice to keep consistent types for these.

>  
>  	mask |= TEGRA20_SPDIF_CTRL_PACK |
>  		TEGRA20_SPDIF_CTRL_BIT_MODE_MASK;
> @@ -133,6 +134,12 @@ static int tegra20_spdif_hw_params(struct snd_pcm_substream *substream,
>  		return ret;
>  	}
>  
> +	rate = clk_get_rate(spdif->clk_spdif_out);
> +	if (rate != spdifclock)
> +		dev_warn_once(dai->dev,
> +			      "SPDIF clock rate %d doesn't match requested rate %lu\n",

That should be %ld since it's not unsigned.

Otherwise, looks good. Probably not worth respinning for just these
minor comments, so:

Acked-by: Thierry Reding <treding@nvidia.com>

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Re: [PATCH v4 13/22] ASoC: tegra20: i2s: Filter out unsupported rates

[Thierry Reding]

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On Sat, Dec 04, 2021 at 05:37:16PM +0300, Dmitry Osipenko wrote:
> Support new nvidia,fixed-parent-rate device-tree property which instructs
> I2S that board wants parent clock rate to stay at a fixed rate. This allows
> to play audio over S/PDIF and I2S simultaneously. The root of the problem
> is that audio components on Tegra share the same audio PLL, and thus, only
> a subset of rates can be supported if we want to play audio simultaneously.
> Filter out audio rates that don't match parent clock rate if device-tree
> has the nvidia,fixed-parent-rate property.
> 
> Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
> ---
>  sound/soc/tegra/tegra20_i2s.c | 49 +++++++++++++++++++++++++++++++++++
>  1 file changed, 49 insertions(+)

Acked-by: Thierry Reding <treding@nvidia.com>

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Re: [PATCH v4 00/22] Support HDMI audio on NVIDIA Tegra20

[Vinod Koul]

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On 16-12-21, 17:29, Dmitry Osipenko wrote:
> 15.12.2021 22:19, Dmitry Osipenko пишет:
> > 15.12.2021 21:57, Mark Brown пишет:
> >> On Sat, Dec 04, 2021 at 05:37:03PM +0300, Dmitry Osipenko wrote:
> >>
> >>> I based S/PDIF patches on Arnd's Bergmann patch from a separate series [1]
> >>> that removes obsolete slave_id. This eases merging of the patches by
> >>> removing the merge conflict. This is a note for Mark Brown.
> >> That's not in my tree so I'll need either a pull request with the series
> >> or a resend after the merge window.
> > This patch is included as a part of this series, please see the patch #6.
> > 
> > I saw that Vinod Koul already merged it into his DMA tree [1] a day ago,
> > but there is no stable branch there.
> > 
> > [1]
> > https://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine.git/log/?h=next
> > 
> 
> Vinod, will you be a able to create immutable branch for us with the
> "dmaengine: kill off dma_slave_config->slave_id" patches [1]?
> 
> [1] https://lore.kernel.org/all/20211122222203.4103644-1-arnd@kernel.org/

Here you go:

The following changes since commit fa55b7dcdc43c1aa1ba12bca9d2dd4318c2a0dbf:

  Linux 5.16-rc1 (2021-11-14 13:56:52 -0800)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine.git tags/dmaengine_topic_slave_id_removal_5.17

for you to fetch changes up to 3c219644075795a99271d345efdfa8b256e55161:

  dmaengine: remove slave_id config field (2021-12-17 11:23:56 +0530)

----------------------------------------------------------------
dmaengine_topic_slave_id_removal_5.17

Tag for dmaengine slave_id removal topic branch which should be merged
into v5.17

----------------------------------------------------------------
Arnd Bergmann (11):
      ASoC: tegra20-spdif: stop setting slave_id
      dmaengine: tegra20-apb: stop checking config->slave_id
      ASoC: dai_dma: remove slave_id field
      spi: pic32: stop setting dma_config->slave_id
      mmc: bcm2835: stop setting chan_config->slave_id
      dmaengine: shdma: remove legacy slave_id parsing
      dmaengine: pxa/mmp: stop referencing config->slave_id
      dmaengine: sprd: stop referencing config->slave_id
      dmaengine: qcom-adm: stop abusing slave_id config
      dmaengine: xilinx_dpdma: stop using slave_id field
      dmaengine: remove slave_id config field

 drivers/dma/mmp_pdma.c             |  6 ------
 drivers/dma/pxa_dma.c              |  7 -------
 drivers/dma/qcom/qcom_adm.c        | 56 +++++++++++++++++++++++++++++++++++++++++++++++++-------
 drivers/dma/sh/shdma-base.c        |  8 --------
 drivers/dma/sprd-dma.c             |  3 ---
 drivers/dma/tegra20-apb-dma.c      |  6 ------
 drivers/dma/xilinx/xilinx_dpdma.c  | 17 +++++++++++------
 drivers/gpu/drm/xlnx/zynqmp_disp.c |  9 +++++++--
 drivers/mmc/host/bcm2835.c         |  2 --
 drivers/mtd/nand/raw/qcom_nandc.c  | 14 ++++++++++++--
 drivers/spi/spi-pic32.c            |  2 --
 drivers/tty/serial/msm_serial.c    | 15 +++++++++++++--
 include/linux/dma/qcom_adm.h       | 12 ++++++++++++
 include/linux/dma/xilinx_dpdma.h   | 11 +++++++++++
 include/linux/dmaengine.h          |  4 ----
 include/sound/dmaengine_pcm.h      |  2 --
 sound/core/pcm_dmaengine.c         |  5 ++---
 sound/soc/tegra/tegra20_spdif.c    |  1 -
 18 files changed, 117 insertions(+), 63 deletions(-)
 create mode 100644 include/linux/dma/qcom_adm.h
 create mode 100644 include/linux/dma/xilinx_dpdma.h

Thanks
-- 
~Vinod

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Re: [PATCH v4 04/22] dt-bindings: host1x: Document optional HDMI sound-dai-cells

[Mark Brown]

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On Thu, Dec 16, 2021 at 03:20:21PM +0100, Thierry Reding wrote:
> On Sat, Dec 04, 2021 at 05:37:07PM +0300, Dmitry Osipenko wrote:
> > Document new optional sound-dai-cells property of HDMI node. This node will
> > be used as endpoint of HDMI sound DAI graph.

> It's probably best for this to go through ASoC along with the other
> audio-related bindings.

> Alternatively, I've just sent out a patch that converts the host1x
> bindings to json-schema, so I could work this into that as well.

It doesn't apply to the ASoC tree for whatever reason so probably best
to roll it in with those JSON updates.

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Re: [PATCH v4 04/22] dt-bindings: host1x: Document optional HDMI sound-dai-cells

[Dmitry Osipenko]

17.12.2021 14:12, Mark Brown пишет:
> On Thu, Dec 16, 2021 at 03:20:21PM +0100, Thierry Reding wrote:
>> On Sat, Dec 04, 2021 at 05:37:07PM +0300, Dmitry Osipenko wrote:
>>> Document new optional sound-dai-cells property of HDMI node. This node will
>>> be used as endpoint of HDMI sound DAI graph.
> 
>> It's probably best for this to go through ASoC along with the other
>> audio-related bindings.
> 
>> Alternatively, I've just sent out a patch that converts the host1x
>> bindings to json-schema, so I could work this into that as well.
> 
> It doesn't apply to the ASoC tree for whatever reason so probably best
> to roll it in with those JSON updates.
> 

This hos1tx binding patch indeed will conflict with the Thierry's patch.

Thierry, will you be able to take the binding patches into the Tegra
tree and resolve all those hos1tx binding conflicts there?

Re: [PATCH v4 04/22] dt-bindings: host1x: Document optional HDMI sound-dai-cells

[Thierry Reding]

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On Fri, Dec 17, 2021 at 02:55:48PM +0300, Dmitry Osipenko wrote:
> 17.12.2021 14:12, Mark Brown пишет:
> > On Thu, Dec 16, 2021 at 03:20:21PM +0100, Thierry Reding wrote:
> >> On Sat, Dec 04, 2021 at 05:37:07PM +0300, Dmitry Osipenko wrote:
> >>> Document new optional sound-dai-cells property of HDMI node. This node will
> >>> be used as endpoint of HDMI sound DAI graph.
> > 
> >> It's probably best for this to go through ASoC along with the other
> >> audio-related bindings.
> > 
> >> Alternatively, I've just sent out a patch that converts the host1x
> >> bindings to json-schema, so I could work this into that as well.
> > 
> > It doesn't apply to the ASoC tree for whatever reason so probably best
> > to roll it in with those JSON updates.
> > 
> 
> This hos1tx binding patch indeed will conflict with the Thierry's patch.
> 
> Thierry, will you be able to take the binding patches into the Tegra
> tree and resolve all those hos1tx binding conflicts there?

Yes, I'll resolve all of those conflicts in the Tegra tree.

Thierry

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Re: [PATCH v4 04/22] dt-bindings: host1x: Document optional HDMI sound-dai-cells

[Dmitry Osipenko]

17.12.2021 15:02, Thierry Reding пишет:
> On Fri, Dec 17, 2021 at 02:55:48PM +0300, Dmitry Osipenko wrote:
>> 17.12.2021 14:12, Mark Brown пишет:
>>> On Thu, Dec 16, 2021 at 03:20:21PM +0100, Thierry Reding wrote:
>>>> On Sat, Dec 04, 2021 at 05:37:07PM +0300, Dmitry Osipenko wrote:
>>>>> Document new optional sound-dai-cells property of HDMI node. This node will
>>>>> be used as endpoint of HDMI sound DAI graph.
>>>
>>>> It's probably best for this to go through ASoC along with the other
>>>> audio-related bindings.
>>>
>>>> Alternatively, I've just sent out a patch that converts the host1x
>>>> bindings to json-schema, so I could work this into that as well.
>>>
>>> It doesn't apply to the ASoC tree for whatever reason so probably best
>>> to roll it in with those JSON updates.
>>>
>>
>> This hos1tx binding patch indeed will conflict with the Thierry's patch.
>>
>> Thierry, will you be able to take the binding patches into the Tegra
>> tree and resolve all those hos1tx binding conflicts there?
> 
> Yes, I'll resolve all of those conflicts in the Tegra tree.

Thank you!

Mark, then you may apply patches 5-13 to ASoC on top of the Vinod's
branch, skipping patch #6. Thanks in advance!

Re: [PATCH v4 00/22] Support HDMI audio on NVIDIA Tegra20

[Dmitry Osipenko]

17.12.2021 09:04, Vinod Koul пишет:
> On 16-12-21, 17:29, Dmitry Osipenko wrote:
>> 15.12.2021 22:19, Dmitry Osipenko пишет:
>>> 15.12.2021 21:57, Mark Brown пишет:
>>>> On Sat, Dec 04, 2021 at 05:37:03PM +0300, Dmitry Osipenko wrote:
>>>>
>>>>> I based S/PDIF patches on Arnd's Bergmann patch from a separate series [1]
>>>>> that removes obsolete slave_id. This eases merging of the patches by
>>>>> removing the merge conflict. This is a note for Mark Brown.
>>>> That's not in my tree so I'll need either a pull request with the series
>>>> or a resend after the merge window.
>>> This patch is included as a part of this series, please see the patch #6.
>>>
>>> I saw that Vinod Koul already merged it into his DMA tree [1] a day ago,
>>> but there is no stable branch there.
>>>
>>> [1]
>>> https://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine.git/log/?h=next
>>>
>>
>> Vinod, will you be a able to create immutable branch for us with the
>> "dmaengine: kill off dma_slave_config->slave_id" patches [1]?
>>
>> [1] https://lore.kernel.org/all/20211122222203.4103644-1-arnd@kernel.org/
> 
> Here you go:
> 
> The following changes since commit fa55b7dcdc43c1aa1ba12bca9d2dd4318c2a0dbf:
> 
>   Linux 5.16-rc1 (2021-11-14 13:56:52 -0800)
> 
> are available in the Git repository at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine.git tags/dmaengine_topic_slave_id_removal_5.17
> 
> for you to fetch changes up to 3c219644075795a99271d345efdfa8b256e55161:
> 
>   dmaengine: remove slave_id config field (2021-12-17 11:23:56 +0530)
> 
> ----------------------------------------------------------------
> dmaengine_topic_slave_id_removal_5.17
> 
> Tag for dmaengine slave_id removal topic branch which should be merged
> into v5.17
> 
> ----------------------------------------------------------------
> Arnd Bergmann (11):
>       ASoC: tegra20-spdif: stop setting slave_id
>       dmaengine: tegra20-apb: stop checking config->slave_id
>       ASoC: dai_dma: remove slave_id field
>       spi: pic32: stop setting dma_config->slave_id
>       mmc: bcm2835: stop setting chan_config->slave_id
>       dmaengine: shdma: remove legacy slave_id parsing
>       dmaengine: pxa/mmp: stop referencing config->slave_id
>       dmaengine: sprd: stop referencing config->slave_id
>       dmaengine: qcom-adm: stop abusing slave_id config
>       dmaengine: xilinx_dpdma: stop using slave_id field
>       dmaengine: remove slave_id config field
> 
>  drivers/dma/mmp_pdma.c             |  6 ------
>  drivers/dma/pxa_dma.c              |  7 -------
>  drivers/dma/qcom/qcom_adm.c        | 56 +++++++++++++++++++++++++++++++++++++++++++++++++-------
>  drivers/dma/sh/shdma-base.c        |  8 --------
>  drivers/dma/sprd-dma.c             |  3 ---
>  drivers/dma/tegra20-apb-dma.c      |  6 ------
>  drivers/dma/xilinx/xilinx_dpdma.c  | 17 +++++++++++------
>  drivers/gpu/drm/xlnx/zynqmp_disp.c |  9 +++++++--
>  drivers/mmc/host/bcm2835.c         |  2 --
>  drivers/mtd/nand/raw/qcom_nandc.c  | 14 ++++++++++++--
>  drivers/spi/spi-pic32.c            |  2 --
>  drivers/tty/serial/msm_serial.c    | 15 +++++++++++++--
>  include/linux/dma/qcom_adm.h       | 12 ++++++++++++
>  include/linux/dma/xilinx_dpdma.h   | 11 +++++++++++
>  include/linux/dmaengine.h          |  4 ----
>  include/sound/dmaengine_pcm.h      |  2 --
>  sound/core/pcm_dmaengine.c         |  5 ++---
>  sound/soc/tegra/tegra20_spdif.c    |  1 -
>  18 files changed, 117 insertions(+), 63 deletions(-)
>  create mode 100644 include/linux/dma/qcom_adm.h
>  create mode 100644 include/linux/dma/xilinx_dpdma.h

Thank you!

Re: [PATCH v4 04/22] dt-bindings: host1x: Document optional HDMI sound-dai-cells

[Dmitry Osipenko]

17.12.2021 15:06, Dmitry Osipenko пишет:
> 17.12.2021 15:02, Thierry Reding пишет:
>> On Fri, Dec 17, 2021 at 02:55:48PM +0300, Dmitry Osipenko wrote:
>>> 17.12.2021 14:12, Mark Brown пишет:
>>>> On Thu, Dec 16, 2021 at 03:20:21PM +0100, Thierry Reding wrote:
>>>>> On Sat, Dec 04, 2021 at 05:37:07PM +0300, Dmitry Osipenko wrote:
>>>>>> Document new optional sound-dai-cells property of HDMI node. This node will
>>>>>> be used as endpoint of HDMI sound DAI graph.
>>>>
>>>>> It's probably best for this to go through ASoC along with the other
>>>>> audio-related bindings.
>>>>
>>>>> Alternatively, I've just sent out a patch that converts the host1x
>>>>> bindings to json-schema, so I could work this into that as well.
>>>>
>>>> It doesn't apply to the ASoC tree for whatever reason so probably best
>>>> to roll it in with those JSON updates.
>>>>
>>>
>>> This hos1tx binding patch indeed will conflict with the Thierry's patch.
>>>
>>> Thierry, will you be able to take the binding patches into the Tegra
>>> tree and resolve all those hos1tx binding conflicts there?
>>
>> Yes, I'll resolve all of those conflicts in the Tegra tree.
> 
> Thank you!
> 
> Mark, then you may apply patches 5-13 to ASoC on top of the Vinod's
> branch, skipping patch #6. Thanks in advance!
> 

I see that Thierry applied only the host1x patch, but not the other
bindings.

Mark, perhaps will be easier if I'll just make the v5 which you could
apply easily without a need to apply only selective patches. I'll try to
post it ASAP.

Re: (subset) [PATCH v4 00/22] Support HDMI audio on NVIDIA Tegra20

[Mark Brown]

On Sat, 4 Dec 2021 17:37:03 +0300, Dmitry Osipenko wrote:
> This series revives Tegra20 S/PDIF driver which was upstreamed long time
> ago, but never was used. It also turns Tegra DRM HDMI driver into HDMI
> audio CODEC provider. Finally, HDMI audio is enabled in device-trees.
> For now the audio is enable only for Acer A500 tablet and Toshiba AC100
> netbook because they're already supported by upstream, later on ASUS TF101
> tablet will join them.
> 
> [...]

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next

Thanks!

[01/22] ASoC: dt-bindings: Add binding for Tegra20 S/PDIF
        commit: 46f016119e2ac38d9efd32e4957bc888dc71fffe
[02/22] ASoC: dt-bindings: tegra20-i2s: Convert to schema
        commit: 80c3d0a97abfd2a678b6077236a77ccb8c4747fa
[03/22] ASoC: dt-bindings: tegra20-i2s: Document new nvidia,fixed-parent-rate property
        commit: 549818e5c85a6d806cdef146d0203df2689d4e2f
[05/22] ASoC: tegra20: spdif: Set FIFO trigger level
        commit: 16736a0221db6d6f3fe130750c6dc5bbf5417da4
[06/22] ASoC: tegra20-spdif: stop setting slave_id
        (no commit info)
[07/22] ASoC: tegra20: spdif: Support device-tree
        commit: c0000fc618cdbe190274cf37040033dfa23c159d
[08/22] ASoC: tegra20: spdif: Improve driver's code
        commit: 117aeed43974e500dcbd106e51218a83ae2c9977
[09/22] ASoC: tegra20: spdif: Use more resource-managed helpers
        commit: 150f4d573fe19a77864f6dec31aa444332f9fc9e
[10/22] ASoC: tegra20: spdif: Reset hardware
        commit: ec1b4545d75575118e01a5e95699cff5010b4e19
[11/22] ASoC: tegra20: spdif: Support system suspend
        commit: d51693092ecc732fca3f49549cde1c5206331b09
[12/22] ASoC: tegra20: spdif: Filter out unsupported rates
        commit: 9d8f51cd1fa993939db02a014d4f4b6e252c2a18
[13/22] ASoC: tegra20: i2s: Filter out unsupported rates
        commit: bfa4671db1effe315cade5bddd6cf025e1c403d0

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark