[v4,12/23] drm: zte: Provide ddc symlink in hdmi connector sysfs directory

Submitted by Andrzej Pietrasiewicz on July 11, 2019, 11:26 a.m.

Details

Message ID 4a9fb80b4dc328b420ca5d94ebc2810ab86f788c.1562843413.git.andrzej.p@collabora.com
State New
Headers show
Series "Associate ddc adapters with connectors" ( rev: 1 ) in Freedreno

Not browsing as part of any series.

Commit Message

Andrzej Pietrasiewicz July 11, 2019, 11:26 a.m.
Use the ddc pointer provided by the generic connector.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
---
 drivers/gpu/drm/zte/zx_hdmi.c | 25 +++++++++----------------
 1 file changed, 9 insertions(+), 16 deletions(-)

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diff --git a/drivers/gpu/drm/zte/zx_hdmi.c b/drivers/gpu/drm/zte/zx_hdmi.c
index bfe918b27c5c..862a855ea14a 100644
--- a/drivers/gpu/drm/zte/zx_hdmi.c
+++ b/drivers/gpu/drm/zte/zx_hdmi.c
@@ -29,15 +29,11 @@ 
 #define ZX_HDMI_INFOFRAME_SIZE		31
 #define DDC_SEGMENT_ADDR		0x30
 
-struct zx_hdmi_i2c {
-	struct i2c_adapter adap;
-	struct mutex lock;
-};
-
 struct zx_hdmi {
 	struct drm_connector connector;
 	struct drm_encoder encoder;
-	struct zx_hdmi_i2c *ddc;
+	/* protects ddc access */
+	struct mutex ddc_lock;
 	struct device *dev;
 	struct drm_device *drm;
 	void __iomem *mmio;
@@ -264,7 +260,7 @@  static int zx_hdmi_connector_get_modes(struct drm_connector *connector)
 	struct edid *edid;
 	int ret;
 
-	edid = drm_get_edid(connector, &hdmi->ddc->adap);
+	edid = drm_get_edid(connector, connector->ddc);
 	if (!edid)
 		return 0;
 
@@ -562,10 +558,9 @@  static int zx_hdmi_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs,
 			    int num)
 {
 	struct zx_hdmi *hdmi = i2c_get_adapdata(adap);
-	struct zx_hdmi_i2c *ddc = hdmi->ddc;
 	int i, ret = 0;
 
-	mutex_lock(&ddc->lock);
+	mutex_lock(&hdmi->ddc_lock);
 
 	/* Enable DDC master access */
 	hdmi_writeb_mask(hdmi, TPI_DDC_MASTER_EN, HW_DDC_MASTER, HW_DDC_MASTER);
@@ -590,7 +585,7 @@  static int zx_hdmi_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs,
 	/* Disable DDC master access */
 	hdmi_writeb_mask(hdmi, TPI_DDC_MASTER_EN, HW_DDC_MASTER, 0);
 
-	mutex_unlock(&ddc->lock);
+	mutex_unlock(&hdmi->ddc_lock);
 
 	return ret;
 }
@@ -608,17 +603,15 @@  static const struct i2c_algorithm zx_hdmi_algorithm = {
 static int zx_hdmi_ddc_register(struct zx_hdmi *hdmi)
 {
 	struct i2c_adapter *adap;
-	struct zx_hdmi_i2c *ddc;
 	int ret;
 
-	ddc = devm_kzalloc(hdmi->dev, sizeof(*ddc), GFP_KERNEL);
-	if (!ddc)
+	adap = devm_kzalloc(hdmi->dev, sizeof(*adap), GFP_KERNEL);
+	if (!adap)
 		return -ENOMEM;
 
-	hdmi->ddc = ddc;
-	mutex_init(&ddc->lock);
+	hdmi->connector.ddc = adap;
+	mutex_init(&hdmi->ddc_lock);
 
-	adap = &ddc->adap;
 	adap->owner = THIS_MODULE;
 	adap->class = I2C_CLASS_DDC;
 	adap->dev.parent = hdmi->dev;

Comments

On Thu, Jul 11, 2019 at 01:26:39PM +0200, Andrzej Pietrasiewicz wrote:
> Use the ddc pointer provided by the generic connector.
> 
> Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>

Acked-by: Shawn Guo <shawnguo@kernel.org>