[PATCH v2 09/12] drm: bridge/dw_hdmi: creat dw-hdmi-audio platform device

[Yakir Yang <ykk@rock-chips.com>]

creat dw-hdmi-audio device dynamically in probe function,
and transfer some interfaces to dw-hdmi-audio driver for
setting hdmi audio format & control hdmi audio clock.

Signed-off-by: Yakir Yang <ykk@rock-chips.com>
---
Changes in v2:
- Update the audio control interfaces

 drivers/gpu/drm/bridge/dw_hdmi.c | 23 +++++++++++++++++++++++
 include/drm/bridge/dw_hdmi.h     | 13 +++++++++++++
 2 files changed, 36 insertions(+)

diff --git a/drivers/gpu/drm/bridge/dw_hdmi.c b/drivers/gpu/drm/bridge/dw_hdmi.c
index 25c1678..75e3029 100644
--- a/drivers/gpu/drm/bridge/dw_hdmi.c
+++ b/drivers/gpu/drm/bridge/dw_hdmi.c
@@ -107,6 +107,7 @@ struct dw_hdmi {
 	struct drm_encoder *encoder;
 	struct drm_bridge *bridge;
 
+	struct platform_device *audio_pdev;
 	enum dw_hdmi_devtype dev_type;
 	struct device *dev;
 	struct clk *isfr_clk;
@@ -1703,6 +1704,8 @@ int dw_hdmi_bind(struct device *dev, struct device *master,
 		 struct resource *iores, int irq,
 		 const struct dw_hdmi_plat_data *plat_data)
 {
+	struct platform_device_info pdevinfo;
+	struct dw_hdmi_audio_data audio;
 	struct drm_device *drm = data;
 	struct device_node *np = dev->of_node;
 	struct device_node *ddc_node;
@@ -1824,6 +1827,23 @@ int dw_hdmi_bind(struct device *dev, struct device *master,
 
 	dev_set_drvdata(dev, hdmi);
 
+	memset(&pdevinfo, 0, sizeof(pdevinfo));
+	pdevinfo.parent = dev;
+	pdevinfo.id = PLATFORM_DEVID_NONE;
+
+	audio.irq = irq;
+	audio.dw = hdmi;
+	audio.config_audio = hdmi_config_audio;
+	audio.enable_clk = hdmi_audio_clk_enable;
+	audio.disable_clk = hdmi_audio_clk_disable;
+	audio.get_connect_status = hdmi_get_connect_status;
+
+	pdevinfo.name = "dw-hdmi-audio";
+	pdevinfo.data = &audio;
+	pdevinfo.size_data = sizeof(audio);
+	pdevinfo.dma_mask = DMA_BIT_MASK(32);
+	hdmi->audio_pdev = platform_device_register_full(&pdevinfo);
+
 	return 0;
 
 err_iahb:
@@ -1839,6 +1859,9 @@ void dw_hdmi_unbind(struct device *dev, struct device *master, void *data)
 {
 	struct dw_hdmi *hdmi = dev_get_drvdata(dev);
 
+	if (!IS_ERR(hdmi->audio_pdev))
+		platform_device_unregister(hdmi->audio_pdev);
+
 	/* Disable all interrupts */
 	hdmi_writeb(hdmi, ~0, HDMI_IH_MUTE_PHY_STAT0);
 
diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h
index aafa447..2f29112 100644
--- a/include/drm/bridge/dw_hdmi.h
+++ b/include/drm/bridge/dw_hdmi.h
@@ -12,6 +12,8 @@
 
 #include <drm/drmP.h>
 
+struct dw_hdmi;
+
 enum {
 	DW_HDMI_RES_8,
 	DW_HDMI_RES_10,
@@ -74,6 +76,17 @@ struct hdmi_audio_fmt {
 	enum hdmi_audio_wordlength word_length;
 };
 
+struct dw_hdmi_audio_data {
+	struct dw_hdmi *dw;
+
+	int irq;
+	bool (*get_connect_status)(struct dw_hdmi *hdmi);
+
+	void (*enable_clk)(struct dw_hdmi *hdmi);
+	void (*disable_clk)(struct dw_hdmi *hdmi);
+	void (*config_audio)(struct dw_hdmi *hdmi, struct hdmi_audio_fmt *aud);
+};
+
 struct dw_hdmi_plat_data {
 	enum dw_hdmi_devtype dev_type;
 	const struct dw_hdmi_mpll_config *mpll_cfg;
-- 
2.1.2