[PATCH 0/3] DesignWare HDMI I2S suport

[PATCH 0/3] DesignWare HDMI I2S suport

[Kuninori Morimoto]

Hi Mark, Thierry, Russell

These are DesignWare HDMI I2S support patches.
It will use ALSA SoC hdmi-codec driver, but we can't use it as-is.
So, 2), 3) patches modify hdmi-codec style.

Kuninori Morimoto (3):
  1) drm: bridge: add DesignWare HDMI I2S audio support
  2) ASoC: hdmi-codec: callback function will be called with private data
  3) ASoC: hdmi-codec: enable multi probe for same device

 drivers/gpu/drm/bridge/Kconfig             |   8 ++
 drivers/gpu/drm/bridge/Makefile            |   1 +
 drivers/gpu/drm/bridge/dw-hdmi-audio.h     |   7 ++
 drivers/gpu/drm/bridge/dw-hdmi-i2s-audio.c | 123 +++++++++++++++++++++++++++++
 drivers/gpu/drm/bridge/dw-hdmi.c           |  22 +++++-
 drivers/gpu/drm/bridge/dw-hdmi.h           |  21 +++++
 include/sound/hdmi-codec.h                 |  13 +--
 sound/soc/codecs/hdmi-codec.c              |  81 ++++++++++++++++---
 8 files changed, 259 insertions(+), 17 deletions(-)
 create mode 100644 drivers/gpu/drm/bridge/dw-hdmi-i2s-audio.c

-- 
1.9.1

[PATCH 1/3] drm: bridge: add DesignWare HDMI I2S audio support

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

Current dw-hdmi is supporting sound via AHB bus, but it has
I2S audio feature too. This patch adds I2S audio support to dw-hdmi.
This HDMI I2S is supported by using ALSA SoC common HDMI encoder
driver.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 drivers/gpu/drm/bridge/Kconfig             |   8 ++
 drivers/gpu/drm/bridge/Makefile            |   1 +
 drivers/gpu/drm/bridge/dw-hdmi-audio.h     |   7 ++
 drivers/gpu/drm/bridge/dw-hdmi-i2s-audio.c | 123 +++++++++++++++++++++++++++++
 drivers/gpu/drm/bridge/dw-hdmi.c           |  22 +++++-
 drivers/gpu/drm/bridge/dw-hdmi.h           |  21 +++++
 6 files changed, 180 insertions(+), 2 deletions(-)
 create mode 100644 drivers/gpu/drm/bridge/dw-hdmi-i2s-audio.c

diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
index 8f7423f..8e2a22d 100644
--- a/drivers/gpu/drm/bridge/Kconfig
+++ b/drivers/gpu/drm/bridge/Kconfig
@@ -32,6 +32,14 @@ config DRM_DW_HDMI_AHB_AUDIO
 	  Designware HDMI block.  This is used in conjunction with
 	  the i.MX6 HDMI driver.
 
+config DRM_DW_HDMI_I2S_AUDIO
+	tristate "Synopsis Designware I2S Audio interface"
+	depends on DRM_DW_HDMI
+	select SND_SOC_HDMI_CODEC
+	help
+	  Support the I2S Audio interface which is part of the Synopsis
+	  Designware HDMI block.
+
 config DRM_NXP_PTN3460
 	tristate "NXP PTN3460 DP/LVDS bridge"
 	depends on OF
diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile
index 96b13b3..1af92ad 100644
--- a/drivers/gpu/drm/bridge/Makefile
+++ b/drivers/gpu/drm/bridge/Makefile
@@ -3,6 +3,7 @@ ccflags-y := -Iinclude/drm
 obj-$(CONFIG_DRM_ANALOGIX_ANX78XX) += analogix-anx78xx.o
 obj-$(CONFIG_DRM_DW_HDMI) += dw-hdmi.o
 obj-$(CONFIG_DRM_DW_HDMI_AHB_AUDIO) += dw-hdmi-ahb-audio.o
+obj-$(CONFIG_DRM_DW_HDMI_I2S_AUDIO) += dw-hdmi-i2s-audio.o
 obj-$(CONFIG_DRM_NXP_PTN3460) += nxp-ptn3460.o
 obj-$(CONFIG_DRM_PARADE_PS8622) += parade-ps8622.o
 obj-$(CONFIG_DRM_ANALOGIX_DP) += analogix/
diff --git a/drivers/gpu/drm/bridge/dw-hdmi-audio.h b/drivers/gpu/drm/bridge/dw-hdmi-audio.h
index 91f631b..fd1f745 100644
--- a/drivers/gpu/drm/bridge/dw-hdmi-audio.h
+++ b/drivers/gpu/drm/bridge/dw-hdmi-audio.h
@@ -11,4 +11,11 @@ struct dw_hdmi_audio_data {
 	u8 *eld;
 };
 
+struct dw_hdmi_i2s_audio_data {
+	struct dw_hdmi *hdmi;
+
+	void (*write)(struct dw_hdmi *hdmi, u8 val, int offset);
+	u8 (*read)(struct dw_hdmi *hdmi, int offset);
+};
+
 #endif
diff --git a/drivers/gpu/drm/bridge/dw-hdmi-i2s-audio.c b/drivers/gpu/drm/bridge/dw-hdmi-i2s-audio.c
new file mode 100644
index 0000000..df1519c
--- /dev/null
+++ b/drivers/gpu/drm/bridge/dw-hdmi-i2s-audio.c
@@ -0,0 +1,123 @@
+/*
+ * dw-hdmi-i2s-audio.c
+ *
+ * Copyright (c) 2016 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <drm/bridge/dw_hdmi.h>
+
+#include <sound/hdmi-codec.h>
+
+#include "dw-hdmi.h"
+#include "dw-hdmi-audio.h"
+
+#define DRIVER_NAME "dw-hdmi-i2s-audio"
+
+static inline void hdmi_write(struct dw_hdmi_i2s_audio_data *audio, u8 val, int offset)
+{
+	struct dw_hdmi *hdmi = audio->hdmi;
+
+	audio->write(hdmi, val, offset);
+}
+
+static inline u8 hdmi_read(struct dw_hdmi_i2s_audio_data *audio, int offset)
+{
+	struct dw_hdmi *hdmi = audio->hdmi;
+
+	return audio->read(hdmi, offset);
+}
+
+static int dw_hdmi_i2s_hw_params(struct device *dev, void *data,
+				 struct hdmi_codec_daifmt *fmt,
+				 struct hdmi_codec_params *hparms)
+{
+	struct dw_hdmi_i2s_audio_data *audio = data;
+	struct dw_hdmi *hdmi = audio->hdmi;
+	u8 conf0 = 0;
+	u8 conf1 = 0;
+	u8 inputclkfs = 0;
+
+	/* it cares I2S only */
+	if ((fmt->fmt != HDMI_I2S) ||
+	    (fmt->bit_clk_master | fmt->frame_clk_master)) {
+		dev_err(dev, "unsupported format/settings\n");
+		return -EINVAL;
+	}
+
+	inputclkfs	= HDMI_AUD_INPUTCLKFS_64FS;
+	conf0		= HDMI_AUD_CONF0_I2S_ALL_ENABLE;
+
+	switch(hparms->sample_width) {
+	case 16:
+		conf1 = HDMI_AUD_CONF1_WIDTH_16;
+		break;
+	case 24:
+	case 32:
+		conf1 = HDMI_AUD_CONF1_WIDTH_24;
+		break;
+	}
+
+	dw_hdmi_set_sample_rate(hdmi, hparms->sample_rate);
+
+	hdmi_write(audio, inputclkfs, HDMI_AUD_INPUTCLKFS);
+	hdmi_write(audio, conf0, HDMI_AUD_CONF0);
+	hdmi_write(audio, conf1, HDMI_AUD_CONF1);
+
+	dw_hdmi_audio_enable(hdmi);
+
+	return 0;
+}
+
+static void dw_hdmi_i2s_audio_shutdown(struct device *dev, void *data)
+{
+	struct dw_hdmi_i2s_audio_data *audio = data;
+	struct dw_hdmi *hdmi = audio->hdmi;
+
+	dw_hdmi_audio_disable(hdmi);
+
+	hdmi_write(audio, HDMI_AUD_CONF0_SW_RESET, HDMI_AUD_CONF0);
+}
+
+static struct hdmi_codec_ops dw_hdmi_i2s_ops = {
+	.hw_params	= dw_hdmi_i2s_hw_params,
+	.audio_shutdown	= dw_hdmi_i2s_audio_shutdown,
+};
+
+static int snd_dw_hdmi_probe(struct platform_device *pdev)
+{
+	struct dw_hdmi_i2s_audio_data *audio = pdev->dev.platform_data;
+	struct platform_device_info pdevinfo;
+	struct hdmi_codec_pdata pdata;
+
+	pdata.ops		= &dw_hdmi_i2s_ops;
+	pdata.i2s		= 1;
+	pdata.max_i2s_channels	= 6;
+	pdata.data		= audio;
+
+	memset(&pdevinfo, 0, sizeof(pdevinfo));
+	pdevinfo.parent		= pdev->dev.parent;
+	pdevinfo.id		= PLATFORM_DEVID_AUTO;
+	pdevinfo.name		= HDMI_CODEC_DRV_NAME;
+	pdevinfo.data		= &pdata;
+	pdevinfo.size_data	= sizeof(pdata);
+	pdevinfo.dma_mask	= DMA_BIT_MASK(32);
+
+	return IS_ERR_OR_NULL(platform_device_register_full(&pdevinfo));
+}
+
+static struct platform_driver snd_dw_hdmi_driver = {
+	.probe	= snd_dw_hdmi_probe,
+	.driver	= {
+		.name = DRIVER_NAME,
+		.owner = THIS_MODULE,
+	},
+};
+module_platform_driver(snd_dw_hdmi_driver);
+
+MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
+MODULE_DESCRIPTION("Synopsis Designware HDMI I2S ALSA SoC interface");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:" DRIVER_NAME);
diff --git a/drivers/gpu/drm/bridge/dw-hdmi.c b/drivers/gpu/drm/bridge/dw-hdmi.c
index 55e73e8..e9ba59e 100644
--- a/drivers/gpu/drm/bridge/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/dw-hdmi.c
@@ -2013,10 +2013,11 @@ int dw_hdmi_bind(struct device *dev, struct device *master,
 	struct device_node *np = dev->of_node;
 	struct platform_device_info pdevinfo;
 	struct device_node *ddc_node;
-	struct dw_hdmi_audio_data audio;
 	struct dw_hdmi *hdmi;
 	int ret;
 	u32 val = 1;
+	u8 config0;
+	u8 config1;
 
 	hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL);
 	if (!hdmi)
@@ -2185,7 +2186,12 @@ int dw_hdmi_bind(struct device *dev, struct device *master,
 	pdevinfo.parent = dev;
 	pdevinfo.id = PLATFORM_DEVID_AUTO;
 
-	if (hdmi_readb(hdmi, HDMI_CONFIG1_ID) & HDMI_CONFIG1_AHB) {
+	config0 = hdmi_readb(hdmi, HDMI_CONFIG0_ID);
+	config1 = hdmi_readb(hdmi, HDMI_CONFIG1_ID);
+
+	if (config1 & HDMI_CONFIG1_AHB) {
+		struct dw_hdmi_audio_data audio;
+
 		audio.phys = iores->start;
 		audio.base = hdmi->regs;
 		audio.irq = irq;
@@ -2197,6 +2203,18 @@ int dw_hdmi_bind(struct device *dev, struct device *master,
 		pdevinfo.size_data = sizeof(audio);
 		pdevinfo.dma_mask = DMA_BIT_MASK(32);
 		hdmi->audio = platform_device_register_full(&pdevinfo);
+	} else if (config0 & HDMI_CONFIG0_I2S) {
+		struct dw_hdmi_i2s_audio_data audio;
+
+		audio.hdmi	= hdmi;
+		audio.write	= hdmi_writeb;
+		audio.read	= hdmi_readb;
+
+		pdevinfo.name = "dw-hdmi-i2s-audio";
+		pdevinfo.data = &audio;
+		pdevinfo.size_data = sizeof(audio);
+		pdevinfo.dma_mask = DMA_BIT_MASK(32);
+		hdmi->audio = platform_device_register_full(&pdevinfo);
 	}
 
 	/* Unmute I2CM interrupts and reset HDMI DDC I2C master controller */
diff --git a/drivers/gpu/drm/bridge/dw-hdmi.h b/drivers/gpu/drm/bridge/dw-hdmi.h
index fc9a560..c8bdbf2 100644
--- a/drivers/gpu/drm/bridge/dw-hdmi.h
+++ b/drivers/gpu/drm/bridge/dw-hdmi.h
@@ -545,6 +545,10 @@
 #define HDMI_I2CM_FS_SCL_LCNT_0_ADDR            0x7E12
 
 enum {
+
+/* CONFIG0_ID field values */
+	HDMI_CONFIG0_I2S = 0x10,
+
 /* CONFIG1_ID field values */
 	HDMI_CONFIG1_AHB = 0x01,
 
@@ -887,6 +891,17 @@ enum {
 	HDMI_PHY_I2CM_CTLINT_ADDR_ARBITRATION_POL = 0x08,
 	HDMI_PHY_I2CM_CTLINT_ADDR_ARBITRATION_MASK = 0x04,
 
+/* AUD_CONF0 field values */
+	HDMI_AUD_CONF0_SW_RESET = 0x80,
+	HDMI_AUD_CONF0_I2S_ALL_ENABLE = 0x2F,
+
+/* AUD_CONF1 field values */
+	HDMI_AUD_CONF1_MODE_I2S = 0x00,
+	HDMI_AUD_CONF1_MODE_RIGHT_J = 0x02,
+	HDMI_AUD_CONF1_MODE_LEFT_J = 0x04,
+	HDMI_AUD_CONF1_WIDTH_16 = 0x10,
+	HDMI_AUD_CONF1_WIDTH_24 = 0x18,
+
 /* AUD_CTS3 field values */
 	HDMI_AUD_CTS3_N_SHIFT_OFFSET = 5,
 	HDMI_AUD_CTS3_N_SHIFT_MASK = 0xe0,
@@ -901,6 +916,12 @@ enum {
 	HDMI_AUD_CTS3_CTS_MANUAL = 0x10,
 	HDMI_AUD_CTS3_AUDCTS19_16_MASK = 0x0f,
 
+/* HDMI_AUD_INPUTCLKFS field values */
+	HDMI_AUD_INPUTCLKFS_128FS = 0,
+	HDMI_AUD_INPUTCLKFS_256FS = 1,
+	HDMI_AUD_INPUTCLKFS_512FS = 2,
+	HDMI_AUD_INPUTCLKFS_64FS = 4,
+
 /* AHB_DMA_CONF0 field values */
 	HDMI_AHB_DMA_CONF0_SW_FIFO_RST_OFFSET = 7,
 	HDMI_AHB_DMA_CONF0_SW_FIFO_RST_MASK = 0x80,
-- 
1.9.1

Re: [PATCH 1/3] drm: bridge: add DesignWare HDMI I2S audio support

[Jose Abreu]

Hi,


On 24-06-2016 03:40, Kuninori Morimoto wrote:
> From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
>
> Current dw-hdmi is supporting sound via AHB bus, but it has
> I2S audio feature too. This patch adds I2S audio support to dw-hdmi.
> This HDMI I2S is supported by using ALSA SoC common HDMI encoder
> driver.
>
> Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
> ---
>

I just tested this patch and everything seems ok. Should I give
my tested-by?

Best regards,
Jose Miguel Abreu

Re: [PATCH 1/3] drm: bridge: add DesignWare HDMI I2S audio support

[Kuninori Morimoto]

Hi Jose
Cc: Mark, Thierry, Daniel

> > From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
> >
> > Current dw-hdmi is supporting sound via AHB bus, but it has
> > I2S audio feature too. This patch adds I2S audio support to dw-hdmi.
> > This HDMI I2S is supported by using ALSA SoC common HDMI encoder
> > driver.
> >
> > Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
> > ---
> >
> 
> I just tested this patch and everything seems ok. Should I give
> my tested-by?

Thank you for your test. I'm happy if it could have it.

Mark, Thierry, Daniel
I wonder who can be maintainer for this patch ??

Best regards
---
Kuninori Morimoto

Re: [PATCH 1/3] drm: bridge: add DesignWare HDMI I2S audio support

[Jose Abreu]

Hi,

On 01-08-2016 05:57, Kuninori Morimoto wrote:
> Hi Jose
> Cc: Mark, Thierry, Daniel
>
>>> From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
>>>
>>> Current dw-hdmi is supporting sound via AHB bus, but it has
>>> I2S audio feature too. This patch adds I2S audio support to dw-hdmi.
>>> This HDMI I2S is supported by using ALSA SoC common HDMI encoder
>>> driver.
>>>
>>> Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
>>> ---
>>>
>> I just tested this patch and everything seems ok. Should I give
>> my tested-by?
> Thank you for your test. I'm happy if it could have it.
>
> Mark, Thierry, Daniel
> I wonder who can be maintainer for this patch ??
>
> Best regards
> ---
> Kuninori Morimoto

Tested-by: Jose Abreu <joabreu@synopsys.com>

Best regards,
Jose Miguel Abreu

Re: [PATCH 1/3] drm: bridge: add DesignWare HDMI I2S audio support

[Mark Brown]

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On Mon, Aug 01, 2016 at 04:57:07AM +0000, Kuninori Morimoto wrote:

> Mark, Thierry, Daniel
> I wonder who can be maintainer for this patch ??

It's a DRM patch so I'd expect someone in the DRM subsystem.

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Re: [PATCH 1/3] drm: bridge: add DesignWare HDMI I2S audio support

[Kuninori Morimoto]

Hi Mark

> > Mark, Thierry, Daniel
> > I wonder who can be maintainer for this patch ??
> 
> It's a DRM patch so I'd expect someone in the DRM subsystem.

OK, I see.
But, I will keep Cc to you for this patch-set.

Re: [PATCH 1/3] drm: bridge: add DesignWare HDMI I2S audio support

[Daniel Vetter]

On Tue, Aug 02, 2016 at 12:47:46AM +0000, Kuninori Morimoto wrote:
> 
> Hi Mark
> 
> > > Mark, Thierry, Daniel
> > > I wonder who can be maintainer for this patch ??
> > 
> > It's a DRM patch so I'd expect someone in the DRM subsystem.
> 
> OK, I see.
> But, I will keep Cc to you for this patch-set.

Archit Tajena is the maintainer of last resort for anything related to
drm_bridge.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch

Re: [PATCH 1/3] drm: bridge: add DesignWare HDMI I2S audio support

[Kuninori Morimoto]

Hi Daniel

> > > > Mark, Thierry, Daniel
> > > > I wonder who can be maintainer for this patch ??
> > > 
> > > It's a DRM patch so I'd expect someone in the DRM subsystem.
> > 
> > OK, I see.
> > But, I will keep Cc to you for this patch-set.
> 
> Archit Tajena is the maintainer of last resort for anything related to
> drm_bridge.

Thank you.
I will re-post these patches with To: Archit

Re: [PATCH 1/3] drm: bridge: add DesignWare HDMI I2S audio support

[Mark Brown]

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On Tue, Aug 02, 2016 at 03:14:57PM +0200, Daniel Vetter wrote:

> Archit Tajena is the maintainer of last resort for anything related to
> drm_bridge.

That's Archit Taneja <architt@codeaurora.org> (note spelling of surname)
for anyone else who's confused.  Can we get him listed in MAINTAINERS
please so it's easier for people to work this out and send patches to
him?  

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Re: [PATCH 1/3] drm: bridge: add DesignWare HDMI I2S audio support

[Russell King - ARM Linux]

On Fri, Jun 24, 2016 at 11:40:44AM +0900, Kuninori Morimoto wrote:
> +static int snd_dw_hdmi_probe(struct platform_device *pdev)
> +{
> +	struct dw_hdmi_i2s_audio_data *audio = pdev->dev.platform_data;
> +	struct platform_device_info pdevinfo;
> +	struct hdmi_codec_pdata pdata;
> +
> +	pdata.ops		= &dw_hdmi_i2s_ops;
> +	pdata.i2s		= 1;
> +	pdata.max_i2s_channels	= 6;
> +	pdata.data		= audio;
> +
> +	memset(&pdevinfo, 0, sizeof(pdevinfo));
> +	pdevinfo.parent		= pdev->dev.parent;
> +	pdevinfo.id		= PLATFORM_DEVID_AUTO;
> +	pdevinfo.name		= HDMI_CODEC_DRV_NAME;
> +	pdevinfo.data		= &pdata;
> +	pdevinfo.size_data	= sizeof(pdata);
> +	pdevinfo.dma_mask	= DMA_BIT_MASK(32);
> +
> +	return IS_ERR_OR_NULL(platform_device_register_full(&pdevinfo));

This is certainly wrong.  You're returning a 0/1 value rather than
an error code when platform_device_register_full() fails.

-- 
RMK's Patch system: http://www.armlinux.org.uk/developer/patches/
FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up
according to speedtest.net.

Re: [PATCH 1/3] drm: bridge: add DesignWare HDMI I2S audio support

[Kuninori Morimoto]

Hi Russell

> > +static int snd_dw_hdmi_probe(struct platform_device *pdev)
> > +{
> > +	struct dw_hdmi_i2s_audio_data *audio = pdev->dev.platform_data;
> > +	struct platform_device_info pdevinfo;
> > +	struct hdmi_codec_pdata pdata;
> > +
> > +	pdata.ops		= &dw_hdmi_i2s_ops;
> > +	pdata.i2s		= 1;
> > +	pdata.max_i2s_channels	= 6;
> > +	pdata.data		= audio;
> > +
> > +	memset(&pdevinfo, 0, sizeof(pdevinfo));
> > +	pdevinfo.parent		= pdev->dev.parent;
> > +	pdevinfo.id		= PLATFORM_DEVID_AUTO;
> > +	pdevinfo.name		= HDMI_CODEC_DRV_NAME;
> > +	pdevinfo.data		= &pdata;
> > +	pdevinfo.size_data	= sizeof(pdata);
> > +	pdevinfo.dma_mask	= DMA_BIT_MASK(32);
> > +
> > +	return IS_ERR_OR_NULL(platform_device_register_full(&pdevinfo));
> 
> This is certainly wrong.  You're returning a 0/1 value rather than
> an error code when platform_device_register_full() fails.

Thanks.
I forgot why I added this ??
I will fix it on v2 patch

[PATCH 2/3] ASoC: hdmi-codec: callback function will be called with private data

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

Current hdmi-codec driver is assuming that it will be registered
from HDMI driver. Because of this assumption, each callback function
has struct device pointer which is parent device (= HDMI).
Then, it can use dev_get_drvdata() to get private data.

OTOH, on some SoC/HDMI case, SoC has VIDEO/SOUND and HDMI IPs.
This case, it needs SoC VIDEO, SoC SOUND and HDMI video, HDMI codec
driver. In DesignWare HDMI IP case, SoC VIDEO (= DRM/KMS) driver tries
to bind DesignWare HDMI video driver, and HDMI codec driver
(= hdmi-codec). This case, above "parent device" of HDMI codec driver
is DRM/KMS driver and its "device" already has private data.

And, from DT and ASoC CPU/Codec/Card binding point of view, HDMI codec
(= hdmi-codec) needs to have "parent device" (= DRM/KMS), otherwise,
it never detect sound card.

Because of these reasons, some driver can't use dev_get_drvdata() to
get private data on hdmi-codec driver. This patch add new void pointer
on hdmi_codec_pdata for private data, and callback function will be
called with it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 include/sound/hdmi-codec.h    | 13 ++++++++-----
 sound/soc/codecs/hdmi-codec.c | 15 ++++++++-------
 2 files changed, 16 insertions(+), 12 deletions(-)

diff --git a/include/sound/hdmi-codec.h b/include/sound/hdmi-codec.h
index fc3a481..530c57b 100644
--- a/include/sound/hdmi-codec.h
+++ b/include/sound/hdmi-codec.h
@@ -53,18 +53,19 @@ struct hdmi_codec_params {
 	int channels;
 };
 
+struct hdmi_codec_pdata;
 struct hdmi_codec_ops {
 	/*
 	 * Called when ASoC starts an audio stream setup.
 	 * Optional
 	 */
-	int (*audio_startup)(struct device *dev);
+	int (*audio_startup)(struct device *dev, void *data);
 
 	/*
 	 * Configures HDMI-encoder for audio stream.
 	 * Mandatory
 	 */
-	int (*hw_params)(struct device *dev,
+	int (*hw_params)(struct device *dev, void *data,
 			 struct hdmi_codec_daifmt *fmt,
 			 struct hdmi_codec_params *hparms);
 
@@ -72,19 +73,20 @@ struct hdmi_codec_ops {
 	 * Shuts down the audio stream.
 	 * Mandatory
 	 */
-	void (*audio_shutdown)(struct device *dev);
+	void (*audio_shutdown)(struct device *dev, void *data);
 
 	/*
 	 * Mute/unmute HDMI audio stream.
 	 * Optional
 	 */
-	int (*digital_mute)(struct device *dev, bool enable);
+	int (*digital_mute)(struct device *dev, void *data, bool enable);
 
 	/*
 	 * Provides EDID-Like-Data from connected HDMI device.
 	 * Optional
 	 */
-	int (*get_eld)(struct device *dev, uint8_t *buf, size_t len);
+	int (*get_eld)(struct device *dev, void *data,
+		       uint8_t *buf, size_t len);
 };
 
 /* HDMI codec initalization data */
@@ -93,6 +95,7 @@ struct hdmi_codec_pdata {
 	uint i2s:1;
 	uint spdif:1;
 	int max_i2s_channels;
+	void *data;
 };
 
 #define HDMI_CODEC_DRV_NAME "hdmi-audio-codec"
diff --git a/sound/soc/codecs/hdmi-codec.c b/sound/soc/codecs/hdmi-codec.c
index 8e36e88..f27d115 100644
--- a/sound/soc/codecs/hdmi-codec.c
+++ b/sound/soc/codecs/hdmi-codec.c
@@ -112,7 +112,7 @@ static int hdmi_codec_startup(struct snd_pcm_substream *substream,
 		return ret;
 
 	if (hcp->hcd.ops->audio_startup) {
-		ret = hcp->hcd.ops->audio_startup(dai->dev->parent);
+		ret = hcp->hcd.ops->audio_startup(dai->dev->parent, hcp->hcd.data);
 		if (ret) {
 			mutex_lock(&hcp->current_stream_lock);
 			hcp->current_stream = NULL;
@@ -122,8 +122,8 @@ static int hdmi_codec_startup(struct snd_pcm_substream *substream,
 	}
 
 	if (hcp->hcd.ops->get_eld) {
-		ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->eld,
-					    sizeof(hcp->eld));
+		ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->hcd.data,
+					    hcp->eld, sizeof(hcp->eld));
 
 		if (!ret) {
 			ret = snd_pcm_hw_constraint_eld(substream->runtime,
@@ -144,7 +144,7 @@ static void hdmi_codec_shutdown(struct snd_pcm_substream *substream,
 
 	WARN_ON(hcp->current_stream != substream);
 
-	hcp->hcd.ops->audio_shutdown(dai->dev->parent);
+	hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data);
 
 	mutex_lock(&hcp->current_stream_lock);
 	hcp->current_stream = NULL;
@@ -195,8 +195,8 @@ static int hdmi_codec_hw_params(struct snd_pcm_substream *substream,
 	hp.sample_rate = params_rate(params);
 	hp.channels = params_channels(params);
 
-	return hcp->hcd.ops->hw_params(dai->dev->parent, &hcp->daifmt[dai->id],
-				       &hp);
+	return hcp->hcd.ops->hw_params(dai->dev->parent, hcp->hcd.data,
+				       &hcp->daifmt[dai->id], &hp);
 }
 
 static int hdmi_codec_set_fmt(struct snd_soc_dai *dai,
@@ -280,7 +280,8 @@ static int hdmi_codec_digital_mute(struct snd_soc_dai *dai, int mute)
 	dev_dbg(dai->dev, "%s()\n", __func__);
 
 	if (hcp->hcd.ops->digital_mute)
-		return hcp->hcd.ops->digital_mute(dai->dev->parent, mute);
+		return hcp->hcd.ops->digital_mute(dai->dev->parent,
+						  hcp->hcd.data, mute);
 
 	return 0;
 }
-- 
1.9.1

Applied "ASoC: hdmi-codec: callback function will be called with private data" to the asoc tree

[Mark Brown]

The patch

   ASoC: hdmi-codec: callback function will be called with private data

has been applied to the asoc tree at

   git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git 

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

>From efc9194bcff84666832c6493bafa92029ac6634c Mon Sep 17 00:00:00 2001
From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Date: Fri, 24 Jun 2016 02:47:55 +0000
Subject: [PATCH] ASoC: hdmi-codec: callback function will be called with
 private data

Current hdmi-codec driver is assuming that it will be registered
from HDMI driver. Because of this assumption, each callback function
has struct device pointer which is parent device (= HDMI).
Then, it can use dev_get_drvdata() to get private data.

OTOH, on some SoC/HDMI case, SoC has VIDEO/SOUND and HDMI IPs.
This case, it needs SoC VIDEO, SoC SOUND and HDMI video, HDMI codec
driver. In DesignWare HDMI IP case, SoC VIDEO (= DRM/KMS) driver tries
to bind DesignWare HDMI video driver, and HDMI codec driver
(= hdmi-codec). This case, above "parent device" of HDMI codec driver
is DRM/KMS driver and its "device" already has private data.

And, from DT and ASoC CPU/Codec/Card binding point of view, HDMI codec
(= hdmi-codec) needs to have "parent device" (= DRM/KMS), otherwise,
it never detect sound card.

Because of these reasons, some driver can't use dev_get_drvdata() to
get private data on hdmi-codec driver. This patch add new void pointer
on hdmi_codec_pdata for private data, and callback function will be
called with it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 include/sound/hdmi-codec.h    | 13 ++++++++-----
 sound/soc/codecs/hdmi-codec.c | 15 ++++++++-------
 2 files changed, 16 insertions(+), 12 deletions(-)

diff --git a/include/sound/hdmi-codec.h b/include/sound/hdmi-codec.h
index fc3a481ad91e..530c57bdefa0 100644
--- a/include/sound/hdmi-codec.h
+++ b/include/sound/hdmi-codec.h
@@ -53,18 +53,19 @@ struct hdmi_codec_params {
 	int channels;
 };
 
+struct hdmi_codec_pdata;
 struct hdmi_codec_ops {
 	/*
 	 * Called when ASoC starts an audio stream setup.
 	 * Optional
 	 */
-	int (*audio_startup)(struct device *dev);
+	int (*audio_startup)(struct device *dev, void *data);
 
 	/*
 	 * Configures HDMI-encoder for audio stream.
 	 * Mandatory
 	 */
-	int (*hw_params)(struct device *dev,
+	int (*hw_params)(struct device *dev, void *data,
 			 struct hdmi_codec_daifmt *fmt,
 			 struct hdmi_codec_params *hparms);
 
@@ -72,19 +73,20 @@ struct hdmi_codec_ops {
 	 * Shuts down the audio stream.
 	 * Mandatory
 	 */
-	void (*audio_shutdown)(struct device *dev);
+	void (*audio_shutdown)(struct device *dev, void *data);
 
 	/*
 	 * Mute/unmute HDMI audio stream.
 	 * Optional
 	 */
-	int (*digital_mute)(struct device *dev, bool enable);
+	int (*digital_mute)(struct device *dev, void *data, bool enable);
 
 	/*
 	 * Provides EDID-Like-Data from connected HDMI device.
 	 * Optional
 	 */
-	int (*get_eld)(struct device *dev, uint8_t *buf, size_t len);
+	int (*get_eld)(struct device *dev, void *data,
+		       uint8_t *buf, size_t len);
 };
 
 /* HDMI codec initalization data */
@@ -93,6 +95,7 @@ struct hdmi_codec_pdata {
 	uint i2s:1;
 	uint spdif:1;
 	int max_i2s_channels;
+	void *data;
 };
 
 #define HDMI_CODEC_DRV_NAME "hdmi-audio-codec"
diff --git a/sound/soc/codecs/hdmi-codec.c b/sound/soc/codecs/hdmi-codec.c
index 8e36e883e453..f27d115626db 100644
--- a/sound/soc/codecs/hdmi-codec.c
+++ b/sound/soc/codecs/hdmi-codec.c
@@ -112,7 +112,7 @@ static int hdmi_codec_startup(struct snd_pcm_substream *substream,
 		return ret;
 
 	if (hcp->hcd.ops->audio_startup) {
-		ret = hcp->hcd.ops->audio_startup(dai->dev->parent);
+		ret = hcp->hcd.ops->audio_startup(dai->dev->parent, hcp->hcd.data);
 		if (ret) {
 			mutex_lock(&hcp->current_stream_lock);
 			hcp->current_stream = NULL;
@@ -122,8 +122,8 @@ static int hdmi_codec_startup(struct snd_pcm_substream *substream,
 	}
 
 	if (hcp->hcd.ops->get_eld) {
-		ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->eld,
-					    sizeof(hcp->eld));
+		ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->hcd.data,
+					    hcp->eld, sizeof(hcp->eld));
 
 		if (!ret) {
 			ret = snd_pcm_hw_constraint_eld(substream->runtime,
@@ -144,7 +144,7 @@ static void hdmi_codec_shutdown(struct snd_pcm_substream *substream,
 
 	WARN_ON(hcp->current_stream != substream);
 
-	hcp->hcd.ops->audio_shutdown(dai->dev->parent);
+	hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data);
 
 	mutex_lock(&hcp->current_stream_lock);
 	hcp->current_stream = NULL;
@@ -195,8 +195,8 @@ static int hdmi_codec_hw_params(struct snd_pcm_substream *substream,
 	hp.sample_rate = params_rate(params);
 	hp.channels = params_channels(params);
 
-	return hcp->hcd.ops->hw_params(dai->dev->parent, &hcp->daifmt[dai->id],
-				       &hp);
+	return hcp->hcd.ops->hw_params(dai->dev->parent, hcp->hcd.data,
+				       &hcp->daifmt[dai->id], &hp);
 }
 
 static int hdmi_codec_set_fmt(struct snd_soc_dai *dai,
@@ -280,7 +280,8 @@ static int hdmi_codec_digital_mute(struct snd_soc_dai *dai, int mute)
 	dev_dbg(dai->dev, "%s()\n", __func__);
 
 	if (hcp->hcd.ops->digital_mute)
-		return hcp->hcd.ops->digital_mute(dai->dev->parent, mute);
+		return hcp->hcd.ops->digital_mute(dai->dev->parent,
+						  hcp->hcd.data, mute);
 
 	return 0;
 }
-- 
2.8.1

[PATCH 3/3] ASoC: hdmi-codec: enable multi probe for same device

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

hdmi-codec driver is common HDMI sound driver,
but it doesn't care about multi sound ports.
For example, hdmi-codec driver is supporting 1 I2S and 1 SPDIF ports,
so, we can't use this driver if HDMI has 2 or more I2S ports.

And we would like to use multi detection.
For example, DesignWare HDMI driver is providing dw_hdmi_bind() to
DRM/KMS driver, and it will setups HDMI video/sound.
Note is that it will be called under for_each loop of ports.

int dw_hdmi_bind(xxx)
{
        /* register hdmi-codec driver here */
}

static int xxx_probe(struct platform_device *pdev)
{
        for_each_xxx(xx) {
                ...
                dw_hdmi_bind(xxx);
                ...
        }
}

This case, dw_hdmi_bind() would like to use hdmi-codec,
and it will be called multiple times for each ports.

Here, ASoC's CPU/Codec/Card bind will checks each "of_node" on DT,
and hdmi-codec driver is assuming its parent device for it.
But it doesn't care about case.
Thus, ASoC never detect correct sound card in this case.

To solve this issue, this patch checks each parent device,
and names "hdmi-hifi.x" in order to each ports.
And uses struct snd_soc_component_driver :: of_xlate_dai_name
for snd_soc_get_dai_name().

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 sound/soc/codecs/hdmi-codec.c | 66 +++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 63 insertions(+), 3 deletions(-)

diff --git a/sound/soc/codecs/hdmi-codec.c b/sound/soc/codecs/hdmi-codec.c
index f27d115..fe155bc 100644
--- a/sound/soc/codecs/hdmi-codec.c
+++ b/sound/soc/codecs/hdmi-codec.c
@@ -24,6 +24,15 @@
 
 #include <drm/drm_crtc.h> /* This is only to get MAX_ELD_BYTES */
 
+struct hdmi_device {
+	struct device *dev;
+	struct list_head list;
+	int cnt;
+};
+#define pos_to_hdmi_device(pos)	container_of((pos), struct hdmi_device, list)
+LIST_HEAD(hdmi_device_list);
+
+#define DAI_NAME_SIZE 16
 struct hdmi_codec_priv {
 	struct hdmi_codec_pdata hcd;
 	struct snd_soc_dai_driver *daidrv;
@@ -320,7 +329,6 @@ static const struct snd_soc_dai_ops hdmi_dai_ops = {
 			 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE)
 
 static struct snd_soc_dai_driver hdmi_i2s_dai = {
-	.name = "i2s-hifi",
 	.id = DAI_ID_I2S,
 	.playback = {
 		.stream_name = "Playback",
@@ -334,7 +342,6 @@ static struct snd_soc_dai_driver hdmi_i2s_dai = {
 };
 
 static const struct snd_soc_dai_driver hdmi_spdif_dai = {
-	.name = "spdif-hifi",
 	.id = DAI_ID_SPDIF,
 	.playback = {
 		.stream_name = "Playback",
@@ -346,6 +353,27 @@ static const struct snd_soc_dai_driver hdmi_spdif_dai = {
 	.ops = &hdmi_dai_ops,
 };
 
+static char hdmi_dai_name[][DAI_NAME_SIZE] = {
+	"hdmi-hifi.0",
+	"hdmi-hifi.1",
+	"hdmi-hifi.2",
+	"hdmi-hifi.3",
+};
+
+static int hdmi_of_xlate_dai_name(struct snd_soc_component *component,
+				  struct of_phandle_args *args,
+				  const char **dai_name)
+{
+	int id = args->args[0];
+
+	if (id < ARRAY_SIZE(hdmi_dai_name)) {
+		*dai_name = hdmi_dai_name[id];
+		return 0;
+	}
+
+	return -EAGAIN;
+}
+
 static struct snd_soc_codec_driver hdmi_codec = {
 	.controls = hdmi_controls,
 	.num_controls = ARRAY_SIZE(hdmi_controls),
@@ -353,6 +381,9 @@ static struct snd_soc_codec_driver hdmi_codec = {
 	.num_dapm_widgets = ARRAY_SIZE(hdmi_widgets),
 	.dapm_routes = hdmi_routes,
 	.num_dapm_routes = ARRAY_SIZE(hdmi_routes),
+	.component_driver = {
+		.of_xlate_dai_name	= hdmi_of_xlate_dai_name,
+	},
 };
 
 static int hdmi_codec_probe(struct platform_device *pdev)
@@ -360,6 +391,8 @@ static int hdmi_codec_probe(struct platform_device *pdev)
 	struct hdmi_codec_pdata *hcd = pdev->dev.platform_data;
 	struct device *dev = &pdev->dev;
 	struct hdmi_codec_priv *hcp;
+	struct hdmi_device *hd;
+	struct list_head *pos;
 	int dai_count, i = 0;
 	int ret;
 
@@ -381,6 +414,30 @@ static int hdmi_codec_probe(struct platform_device *pdev)
 	if (!hcp)
 		return -ENOMEM;
 
+	hd = NULL;
+	list_for_each(pos, &hdmi_device_list) {
+		struct hdmi_device *tmp = pos_to_hdmi_device(pos);
+		if (tmp->dev == dev->parent) {
+			hd = tmp;
+			break;
+		}
+	}
+
+	if (!hd) {
+		hd = devm_kzalloc(dev, sizeof(*hd), GFP_KERNEL);
+		if (!hd)
+			return -ENOMEM;
+
+		hd->dev = dev->parent;
+
+		list_add_tail(&hd->list, &hdmi_device_list);
+	}
+
+	if (hd->cnt >= ARRAY_SIZE(hdmi_dai_name)) {
+		dev_err(dev, "too many hdmi codec are deteced\n");
+		return -EINVAL;
+	}
+
 	hcp->hcd = *hcd;
 	mutex_init(&hcp->current_stream_lock);
 
@@ -393,11 +450,14 @@ static int hdmi_codec_probe(struct platform_device *pdev)
 		hcp->daidrv[i] = hdmi_i2s_dai;
 		hcp->daidrv[i].playback.channels_max =
 			hcd->max_i2s_channels;
+		hcp->daidrv[i].name = hdmi_dai_name[hd->cnt++];
 		i++;
 	}
 
-	if (hcd->spdif)
+	if (hcd->spdif) {
 		hcp->daidrv[i] = hdmi_spdif_dai;
+		hcp->daidrv[i].name = hdmi_dai_name[hd->cnt++];
+	}
 
 	ret = snd_soc_register_codec(dev, &hdmi_codec, hcp->daidrv,
 				     dai_count);
-- 
1.9.1

Re: [PATCH 0/3] DesignWare HDMI I2S suport

[Kuninori Morimoto]

Hi 

> These are DesignWare HDMI I2S support patches.
> It will use ALSA SoC hdmi-codec driver, but we can't use it as-is.
> So, 2), 3) patches modify hdmi-codec style.
> 
> Kuninori Morimoto (3):
>   1) drm: bridge: add DesignWare HDMI I2S audio support
>   2) ASoC: hdmi-codec: callback function will be called with private data
>   3) ASoC: hdmi-codec: enable multi probe for same device

I understand that 1) patch will be handled by drm side maintainer.
And 2) was already accepted by you.
I believe maintainer of 3) patch is you ??

Re: [PATCH 0/3] DesignWare HDMI I2S suport

[Mark Brown]

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On Tue, Aug 02, 2016 at 05:25:38AM +0000, Kuninori Morimoto wrote:

> I understand that 1) patch will be handled by drm side maintainer.
> And 2) was already accepted by you.
> I believe maintainer of 3) patch is you ??

Yes.

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