On Tue, Aug 16, 2016 at 11:26:43PM +0300, Vladimir Zapolskiy wrote:
> This change is needed to properly lock I2C bus driver, which serves
> DDC.
>
> The change fixes an overflow over zero of I2C bus driver user counter:
>
> root@imx6q:~# lsmod
> Not tainted
> dw_hdmi_ahb_audio 4082 0 - Live 0xbf02c000
> dw_hdmi_imx 3498 0 - Live 0xbf00d000
> dw_hdmi 16398 2 dw_hdmi_ahb_audio,dw_hdmi_imx, Live 0xbf004000
> i2c_imx 16687 0 - Live 0xbf017000
>
> root@imx6q:~# rmmod dw_hdmi_imx
> root@imx6q:~# lsmod
> Not tainted
> dw_hdmi_ahb_audio 4082 0 - Live 0xbf02c000
> dw_hdmi 16398 1 dw_hdmi_ahb_audio, Live 0xbf004000
> i2c_imx 16687 -1 - Live 0xbf017000
> ^^
>
> root@imx6q:~# rmmod i2c_imx
> rmmod: ERROR: Module i2c_imx is in use
>
> Note that prior to this change put_device() coupled with
> of_find_i2c_adapter_by_node() was missing on error path of
> dw_hdmi_bind(), added i2c_put_adapter() there along with the change.
I *guess* this is the right thing, but it would be nice to see the
results with the patch applied in the commit description. Nevertheless:
Acked-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxx>
I'd also like to see the DDC bits extracted from the various imx
drivers, because this is surely common code - I've had this floating
around for a few years but never got around to finishing it off and
submitting it. If folk think this is a good idea, and want to take
the idea on, that's fine by me.
drivers/gpu/drm/Makefile | 2 +
drivers/gpu/drm/bridge/dw-hdmi.c | 98 +++++++++----------------------------
drivers/gpu/drm/drm_ddc_connector.c | 91 ++++++++++++++++++++++++++++++++++
drivers/gpu/drm/imx/imx-tve.c | 59 ++++++----------------
include/drm/drm_ddc_connector.h | 33 +++++++++++++
5 files changed, 163 insertions(+), 120 deletions(-)
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index 0238bf8bc8c3..e31c72f86f8c 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -21,6 +21,8 @@ drm-$(CONFIG_DRM_PANEL) += drm_panel.o
drm-$(CONFIG_OF) += drm_of.o
drm-$(CONFIG_AGP) += drm_agpsupport.o
+drm-y += drm_ddc_connector.o
+
drm_kms_helper-y := drm_crtc_helper.o drm_dp_helper.o drm_probe_helper.o \
drm_plane_helper.o drm_dp_mst_topology.o drm_atomic_helper.o \
drm_kms_helper_common.o drm_dp_dual_mode_helper.o \
diff --git a/drivers/gpu/drm/bridge/dw-hdmi.c b/drivers/gpu/drm/bridge/dw-hdmi.c
index 65dd102689ef..786c0c076585 100644
--- a/drivers/gpu/drm/bridge/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/dw-hdmi.c
@@ -27,6 +27,7 @@
#include <drm/drm_crtc_helper.h>
#include <drm/drm_edid.h>
#include <drm/drm_encoder_slave.h>
+#include <drm/drm_ddc_connector.h>
#include <drm/bridge/dw_hdmi.h>
#include "dw-hdmi.h"
@@ -103,7 +104,7 @@ struct hdmi_data_info {
};
struct dw_hdmi {
- struct drm_connector connector;
+ struct drm_ddc_connector *ddc_conn;
struct drm_encoder *encoder;
struct drm_bridge *bridge;
@@ -124,10 +125,7 @@ struct dw_hdmi {
bool phy_enabled;
struct drm_display_mode previous_mode;
- struct i2c_adapter *ddc;
void __iomem *regs;
- bool sink_is_hdmi;
- bool sink_has_audio;
struct mutex mutex; /* for state below and previous_mode */
enum drm_connector_force force; /* mutex-protected force state */
@@ -862,7 +860,7 @@ static int dw_hdmi_phy_init(struct dw_hdmi *hdmi)
bool cscon;
/*check csc whether needed activated in HDMI mode */
- cscon = hdmi->sink_is_hdmi && is_color_space_conversion(hdmi);
+ cscon = hdmi->ddc_conn->sink_is_hdmi && is_color_space_conversion(hdmi);
/* HDMI Phy spec says to do the phy initialization sequence twice */
for (i = 0; i < 2; i++) {
@@ -1039,7 +1037,7 @@ static void hdmi_av_composer(struct dw_hdmi *hdmi,
HDMI_FC_INVIDCONF_IN_I_P_INTERLACED :
HDMI_FC_INVIDCONF_IN_I_P_PROGRESSIVE;
- inv_val |= hdmi->sink_is_hdmi ?
+ inv_val |= hdmi->ddc_conn->sink_is_hdmi ?
HDMI_FC_INVIDCONF_DVI_MODEZ_HDMI_MODE :
HDMI_FC_INVIDCONF_DVI_MODEZ_DVI_MODE;
@@ -1238,7 +1236,7 @@ static int dw_hdmi_setup(struct dw_hdmi *hdmi, struct drm_display_mode *mode)
/* HDMI Initialization Step B.3 */
dw_hdmi_enable_video_path(hdmi);
- if (hdmi->sink_has_audio) {
+ if (hdmi->ddc_conn->sink_has_audio) {
dev_dbg(hdmi->dev, "sink has audio support\n");
/* HDMI Initialization Step E - Configure audio */
@@ -1262,7 +1260,7 @@ static int dw_hdmi_setup(struct dw_hdmi *hdmi, struct drm_display_mode *mode)
hdmi_tx_hdcp_config(hdmi);
dw_hdmi_clear_overflow(hdmi);
- if (hdmi->cable_plugin && hdmi->sink_is_hdmi)
+ if (hdmi->cable_plugin && hdmi->ddc_conn->sink_is_hdmi)
hdmi_enable_overflow_interrupts(hdmi);
return 0;
@@ -1438,8 +1436,7 @@ static void dw_hdmi_bridge_enable(struct drm_bridge *bridge)
static enum drm_connector_status
dw_hdmi_connector_detect(struct drm_connector *connector, bool force)
{
- struct dw_hdmi *hdmi = container_of(connector, struct dw_hdmi,
- connector);
+ struct dw_hdmi *hdmi = drm_ddc_private(connector);
mutex_lock(&hdmi->mutex);
hdmi->force = DRM_FORCE_UNSPECIFIED;
@@ -1451,43 +1448,11 @@ dw_hdmi_connector_detect(struct drm_connector *connector, bool force)
connector_status_connected : connector_status_disconnected;
}
-static int dw_hdmi_connector_get_modes(struct drm_connector *connector)
-{
- struct dw_hdmi *hdmi = container_of(connector, struct dw_hdmi,
- connector);
- struct edid *edid;
- int ret = 0;
-
- if (!hdmi->ddc)
- return 0;
-
- edid = drm_get_edid(connector, hdmi->ddc);
- if (edid) {
- dev_dbg(hdmi->dev, "got edid: width[%d] x height[%d]\n",
- edid->width_cm, edid->height_cm);
-
- hdmi->sink_is_hdmi = drm_detect_hdmi_monitor(edid);
- hdmi->sink_has_audio = drm_detect_monitor_audio(edid);
- drm_mode_connector_update_edid_property(connector, edid);
- hdmi_event_new_edid(hdmi->dev, edid, 0);
- ret = drm_add_edid_modes(connector, edid);
- /* Store the ELD */
- drm_edid_to_eld(connector, edid);
- hdmi_event_new_eld(hdmi->dev, connector->eld);
- kfree(edid);
- } else {
- dev_dbg(hdmi->dev, "failed to get edid\n");
- }
-
- return ret;
-}
-
static enum drm_mode_status
dw_hdmi_connector_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
- struct dw_hdmi *hdmi = container_of(connector,
- struct dw_hdmi, connector);
+ struct dw_hdmi *hdmi = drm_ddc_private(connector);
enum drm_mode_status mode_status = MODE_OK;
/* We don't support double-clocked modes */
@@ -1500,16 +1465,9 @@ dw_hdmi_connector_mode_valid(struct drm_connector *connector,
return mode_status;
}
-static void dw_hdmi_connector_destroy(struct drm_connector *connector)
-{
- drm_connector_unregister(connector);
- drm_connector_cleanup(connector);
-}
-
static void dw_hdmi_connector_force(struct drm_connector *connector)
{
- struct dw_hdmi *hdmi = container_of(connector, struct dw_hdmi,
- connector);
+ struct dw_hdmi *hdmi = drm_ddc_private(connector);
mutex_lock(&hdmi->mutex);
hdmi->force = connector->force;
@@ -1522,7 +1480,7 @@ static const struct drm_connector_funcs dw_hdmi_connector_funcs = {
.dpms = drm_atomic_helper_connector_dpms,
.fill_modes = drm_helper_probe_single_connector_modes,
.detect = dw_hdmi_connector_detect,
- .destroy = dw_hdmi_connector_destroy,
+ .destroy = drm_ddc_connector_destroy,
.force = dw_hdmi_connector_force,
.reset = drm_atomic_helper_connector_reset,
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
@@ -1530,7 +1488,7 @@ static const struct drm_connector_funcs dw_hdmi_connector_funcs = {
};
static const struct drm_connector_helper_funcs dw_hdmi_connector_helper_funcs = {
- .get_modes = dw_hdmi_connector_get_modes,
+ .get_modes = drm_ddc_connector_get_modes,
.mode_valid = dw_hdmi_connector_mode_valid,
.best_encoder = drm_atomic_helper_best_encoder,
};
@@ -1669,16 +1627,16 @@ static int dw_hdmi_register(struct drm_device *drm, struct dw_hdmi *hdmi)
}
encoder->bridge = bridge;
- hdmi->connector.polled = DRM_CONNECTOR_POLL_HPD;
+ hdmi->ddc_conn->connector.polled = DRM_CONNECTOR_POLL_HPD;
drm_connector_helper_add(&hdmi->connector,
&dw_hdmi_connector_helper_funcs);
- drm_connector_init(drm, &hdmi->connector,
- &dw_hdmi_connector_funcs,
- DRM_MODE_CONNECTOR_HDMIA);
+ drm_ddc_connector_init(drm, hdmi->ddc_conn,
+ &dw_hdmi_connector_funcs,
+ DRM_MODE_CONNECTOR_HDMIA);
- drm_mode_connector_attach_encoder(&hdmi->connector, encoder);
+ drm_mode_connector_attach_encoder(&hdmi->ddc_conn->connector, encoder);
return 0;
}
@@ -1691,7 +1649,6 @@ int dw_hdmi_bind(struct device *dev, struct device *master,
struct drm_device *drm = data;
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;
@@ -1701,7 +1658,11 @@ int dw_hdmi_bind(struct device *dev, struct device *master,
if (!hdmi)
return -ENOMEM;
- hdmi->connector.interlace_allowed = 1;
+ hdmi->ddc_conn = drm_ddc_connector_create(drm, np, hdmi);
+ if (IS_ERR(hdmi->ddc_conn))
+ return PTR_ERR(hdmi->ddc_conn);
+
+ hdmi->ddc_conn->connector.interlace_allowed = 1;
hdmi->plat_data = plat_data;
hdmi->dev = dev;
@@ -1732,19 +1693,6 @@ int dw_hdmi_bind(struct device *dev, struct device *master,
return -EINVAL;
}
- ddc_node = of_parse_phandle(np, "ddc-i2c-bus", 0);
- if (ddc_node) {
- hdmi->ddc = of_find_i2c_adapter_by_node(ddc_node);
- of_node_put(ddc_node);
- if (!hdmi->ddc) {
- dev_dbg(hdmi->dev, "failed to read ddc node\n");
- return -EPROBE_DEFER;
- }
-
- } else {
- dev_dbg(hdmi->dev, "no ddc property found\n");
- }
-
hdmi->regs = devm_ioremap_resource(dev, iores);
if (IS_ERR(hdmi->regs))
return PTR_ERR(hdmi->regs);
@@ -1826,7 +1774,7 @@ int dw_hdmi_bind(struct device *dev, struct device *master,
audio.base = hdmi->regs;
audio.irq = irq;
audio.hdmi = hdmi;
- audio.eld = hdmi->connector.eld;
+ audio.eld = hdmi->ddc_conn->connector.eld;
pdevinfo.data = &audio;
pdevinfo.size_data = sizeof(audio);
@@ -1865,12 +1813,10 @@ void dw_hdmi_unbind(struct device *dev, struct device *master, void *data)
/* Disable all interrupts */
hdmi_writeb(hdmi, ~0, HDMI_IH_MUTE_PHY_STAT0);
- hdmi->connector.funcs->destroy(&hdmi->connector);
hdmi->encoder->funcs->destroy(hdmi->encoder);
clk_disable_unprepare(hdmi->iahb_clk);
clk_disable_unprepare(hdmi->isfr_clk);
- i2c_put_adapter(hdmi->ddc);
}
EXPORT_SYMBOL_GPL(dw_hdmi_unbind);
diff --git a/drivers/gpu/drm/drm_ddc_connector.c b/drivers/gpu/drm/drm_ddc_connector.c
new file mode 100644
index 000000000000..1476db8cd549
--- /dev/null
+++ b/drivers/gpu/drm/drm_ddc_connector.c
@@ -0,0 +1,89 @@
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <drm/drmP.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_ddc_connector.h>
+
+enum drm_connector_status
+drm_ddc_connector_always_connected(struct drm_connector *connector, bool force)
+{
+ return connector_status_connected;
+}
+EXPORT_SYMBOL_GPL(drm_ddc_connector_always_connected);
+
+int drm_ddc_connector_get_modes(struct drm_connector *connector)
+{
+ struct drm_ddc_connector *ddc_conn = to_ddc_conn(connector);
+ struct edid *edid;
+ int ret = 0;
+
+ if (!ddc_conn->ddc)
+ return 0;
+
+ edid = drm_get_edid(connector, ddc_conn->ddc);
+ if (edid) {
+ ddc_conn->sink_is_hdmi = drm_detect_hdmi_monitor(edid);
+ ddc_conn->sink_has_audio = drm_detect_monitor_audio(edid);
+ drm_mode_connector_update_edid_property(connector, edid);
+ hdmi_event_new_edid(hdmi->dev, edid, 0);
+ ret = drm_add_edid_modes(connector, edid);
+ /* Store the ELD */
+ drm_edid_to_eld(connector, edid);
+ hdmi_event_new_eld(hdmi->dev, connector->eld);
+ kfree(edid);
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(drm_ddc_connector_get_modes);
+
+void drm_ddc_connector_destroy(struct drm_connector *connector)
+{
+ struct drm_ddc_connector *ddc_conn = to_ddc_conn(connector);
+
+ drm_connector_unregister(connector);
+ drm_connector_cleanup(connector);
+ if (ddc_conn->ddc)
+ i2c_put_adapter(ddc_conn->ddc);
+ kfree(ddc_conn);
+}
+EXPORT_SYMBOL_GPL(drm_ddc_connector_destroy);
+
+void drm_ddc_connector_init(struct drm_device *drm,
+ struct drm_ddc_connector *ddc_conn,
+ struct drm_connector_funcs *funcs, int connector_type)
+{
+ drm_connector_init(drm, &ddc_conn->connector, funcs, connector_type);
+}
+EXPORT_SYMBOL_GPL(drm_ddc_connector_init);
+
+struct drm_ddc_connector *drm_ddc_connector_create(struct drm_device *drm,
+ struct device_node *np, void *private)
+{
+ struct drm_ddc_connector *ddc_conn;
+ struct device_node *ddc_node;
+
+ ddc_conn = kzalloc(sizeof(*ddc_conn), GFP_KERNEL);
+ if (!ddc_conn)
+ return ERR_PTR(-ENOMEM);
+
+ ddc_conn->private = private;
+
+ ddc_node = of_parse_phandle(np, "ddc-i2c-bus", 0);
+ if (ddc_node) {
+ ddc_conn->ddc = of_get_i2c_adapter_by_node(ddc_node);
+ of_node_put(ddc_node);
+ if (!ddc_conn->ddc) {
+ kfree(ddc_conn);
+ return ERR_PTR(-EPROBE_DEFER);
+ }
+ }
+
+ return ddc_conn;
+}
+EXPORT_SYMBOL_GPL(drm_ddc_connector_create);
+
+MODULE_AUTHOR("Russell King <rmk+kernel@xxxxxxxxxxxxxxxx>");
+MODULE_DESCRIPTION("Generic DRM DDC connector module");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/gpu/drm/imx/imx-tve.c b/drivers/gpu/drm/imx/imx-tve.c
index 5e875944ffa2..e1955e4cd90b 100644
--- a/drivers/gpu/drm/imx/imx-tve.c
+++ b/drivers/gpu/drm/imx/imx-tve.c
@@ -17,7 +17,6 @@
#include <linux/clk-provider.h>
#include <linux/component.h>
#include <linux/module.h>
-#include <linux/i2c.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/spinlock.h>
@@ -26,6 +25,7 @@
#include <drm/drm_atomic_helper.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_crtc_helper.h>
+#include <drm/drm_ddc_connector.h>
#include <video/imx-ipu-v3.h>
#include "imx-drm.h"
@@ -104,7 +104,7 @@ enum {
};
struct imx_tve {
- struct drm_connector connector;
+ struct drm_ddc_connector *ddc_conn;
struct drm_encoder encoder;
struct device *dev;
spinlock_t lock; /* register lock */
@@ -115,7 +115,6 @@ struct imx_tve {
struct regmap *regmap;
struct regulator *dac_reg;
- struct i2c_adapter *ddc;
struct clk *clk;
struct clk *di_sel_clk;
struct clk_hw clk_hw_di;
@@ -227,31 +226,6 @@ static int tve_setup_vga(struct imx_tve *tve)
TVE_TVDAC_TEST_MODE_MASK, 1);
}
-static enum drm_connector_status imx_tve_connector_detect(
- struct drm_connector *connector, bool force)
-{
- return connector_status_connected;
-}
-
-static int imx_tve_connector_get_modes(struct drm_connector *connector)
-{
- struct imx_tve *tve = con_to_tve(connector);
- struct edid *edid;
- int ret = 0;
-
- if (!tve->ddc)
- return 0;
-
- edid = drm_get_edid(connector, tve->ddc);
- if (edid) {
- drm_mode_connector_update_edid_property(connector, edid);
- ret = drm_add_edid_modes(connector, edid);
- kfree(edid);
- }
-
- return ret;
-}
-
static int imx_tve_connector_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
@@ -277,7 +251,7 @@ static int imx_tve_connector_mode_valid(struct drm_connector *connector,
static struct drm_encoder *imx_tve_connector_best_encoder(
struct drm_connector *connector)
{
- struct imx_tve *tve = con_to_tve(connector);
+ struct imx_tve *tve = drm_ddc_private(connector);
return &tve->encoder;
}
@@ -352,15 +326,15 @@ static int imx_tve_atomic_check(struct drm_encoder *encoder,
static const struct drm_connector_funcs imx_tve_connector_funcs = {
.dpms = drm_atomic_helper_connector_dpms,
.fill_modes = drm_helper_probe_single_connector_modes,
- .detect = imx_tve_connector_detect,
- .destroy = imx_drm_connector_destroy,
+ .detect = drm_ddc_connector_always_connected,
+ .destroy = drm_ddc_connector_destroy,
.reset = drm_atomic_helper_connector_reset,
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
};
static const struct drm_connector_helper_funcs imx_tve_connector_helper_funcs = {
- .get_modes = imx_tve_connector_get_modes,
+ .get_modes = drm_ddc_connector_get_modes,
.best_encoder = imx_tve_connector_best_encoder,
.mode_valid = imx_tve_connector_mode_valid,
};
@@ -499,12 +473,13 @@ static int imx_tve_register(struct drm_device *drm, struct imx_tve *tve)
drm_encoder_init(drm, &tve->encoder, &imx_tve_encoder_funcs,
encoder_type, NULL);
- drm_connector_helper_add(&tve->connector,
+ drm_connector_helper_add(&tve->ddc_conn->connector,
&imx_tve_connector_helper_funcs);
- drm_connector_init(drm, &tve->connector, &imx_tve_connector_funcs,
- DRM_MODE_CONNECTOR_VGA);
+ drm_ddc_connector_init(drm, tve->ddc_conn, &imx_tve_connector_funcs,
+ DRM_MODE_CONNECTOR_VGA);
- drm_mode_connector_attach_encoder(&tve->connector, &tve->encoder);
+ drm_mode_connector_attach_encoder(&tve->ddc_conn->connector,
+ &tve->encoder);
return 0;
}
@@ -553,7 +528,6 @@ static int imx_tve_bind(struct device *dev, struct device *master, void *data)
struct platform_device *pdev = to_platform_device(dev);
struct drm_device *drm = data;
struct device_node *np = dev->of_node;
- struct device_node *ddc_node;
struct imx_tve *tve;
struct resource *res;
void __iomem *base;
@@ -565,15 +539,13 @@ static int imx_tve_bind(struct device *dev, struct device *master, void *data)
if (!tve)
return -ENOMEM;
+ tve->ddc_conn = drm_ddc_connector_create(drm, np, tve);
+ if (IS_ERR(tve->ddc_conn))
+ return PTR_ERR(tve->ddc_conn);
+
tve->dev = dev;
spin_lock_init(&tve->lock);
- ddc_node = of_parse_phandle(np, "ddc-i2c-bus", 0);
- if (ddc_node) {
- tve->ddc = of_find_i2c_adapter_by_node(ddc_node);
- of_node_put(ddc_node);
- }
-
tve->mode = of_get_tve_mode(np);
if (tve->mode != TVE_MODE_VGA) {
dev_err(dev, "only VGA mode supported, currently\n");
@@ -685,7 +657,6 @@ static void imx_tve_unbind(struct device *dev, struct device *master,
{
struct imx_tve *tve = dev_get_drvdata(dev);
- tve->connector.funcs->destroy(&tve->connector);
tve->encoder.funcs->destroy(&tve->encoder);
if (!IS_ERR(tve->dac_reg))
diff --git a/include/drm/drm_ddc_connector.h b/include/drm/drm_ddc_connector.h
new file mode 100644
index 000000000000..fb8cdf66d5fd
--- /dev/null
+++ b/include/drm/drm_ddc_connector.h
@@ -0,0 +1,33 @@
+#ifndef DRM_DDC_CONNECTOR_H
+#define DRM_DDC_CONNECTOR_H
+
+#include <drm/drm_crtc.h>
+
+struct drm_ddc_connector {
+ struct i2c_adapter *ddc;
+ struct drm_connector connector;
+ unsigned int sink_is_hdmi:1;
+ unsigned int sink_has_audio:1;
+ void *private;
+};
+
+#define to_ddc_conn(c) container_of(c, struct drm_ddc_connector, connector)
+
+enum drm_connector_status drm_ddc_connector_always_connected(
+ struct drm_connector *connector, bool force);
+int drm_ddc_connector_get_modes(struct drm_connector *connector);
+void drm_ddc_connector_init(struct drm_device *drm,
+ struct drm_ddc_connector *ddc_conn,
+ struct drm_connector_funcs *funcs, int connector_type);
+void drm_ddc_connector_destroy(struct drm_connector *connector);
+struct drm_ddc_connector *drm_ddc_connector_create(struct drm_device *drm,
+ struct device_node *np, void *private);
+
+static inline void *drm_ddc_private(struct drm_connector *connector)
+{
+ struct drm_ddc_connector *ddc_conn = to_ddc_conn(connector);
+
+ return ddc_conn->private;
+}
+
+#endif
--
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