Due to the removal of several omapdrm display drivers, the omapdss HPD,
detected and EDID operations are not used anymore. Remove them and all
related code.

Signed-off-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
Reviewed-by: Tomi Valkeinen <tomi.valkei...@ti.com>
Tested-by: Sebastian Reichel <sebastian.reic...@collabora.com>
Reviewed-by: Sebastian Reichel <sebastian.reic...@collabora.com>
---
 drivers/gpu/drm/omapdrm/dss/hdmi4.c      |  61 --------
 drivers/gpu/drm/omapdrm/dss/hdmi5.c      |  46 ------
 drivers/gpu/drm/omapdrm/dss/omapdss.h    |  25 +--
 drivers/gpu/drm/omapdrm/omap_connector.c | 190 +++--------------------
 drivers/gpu/drm/omapdrm/omap_connector.h |   2 -
 drivers/gpu/drm/omapdrm/omap_drv.c       |   8 +-
 6 files changed, 22 insertions(+), 310 deletions(-)

diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi4.c 
b/drivers/gpu/drm/omapdrm/dss/hdmi4.c
index 52daae36935a..b9bcd6e681e8 100644
--- a/drivers/gpu/drm/omapdrm/dss/hdmi4.c
+++ b/drivers/gpu/drm/omapdrm/dss/hdmi4.c
@@ -321,47 +321,6 @@ static void hdmi_disconnect(struct omap_dss_device *src,
        omapdss_device_disconnect(dst, dst->next);
 }
 
-#define MAX_EDID       512
-
-static struct edid *hdmi_read_edid_data(struct omap_hdmi *hdmi,
-                                       struct drm_connector *connector)
-{
-       u8 *edid;
-       int r;
-
-       edid = kzalloc(MAX_EDID, GFP_KERNEL);
-       if (!edid)
-               return NULL;
-
-       r = hdmi4_core_ddc_read(&hdmi->core, edid, 0, EDID_LENGTH);
-       if (r)
-               goto error;
-
-       if (edid[0x7e] > 0) {
-               char checksum = 0;
-               unsigned int i;
-
-               r = hdmi4_core_ddc_read(&hdmi->core, edid + EDID_LENGTH, 1,
-                                       EDID_LENGTH);
-               if (r)
-                       goto error;
-
-               for (i = 0; i < EDID_LENGTH; ++i)
-                       checksum += edid[EDID_LENGTH + i];
-
-               if (checksum != 0) {
-                       DSSERR("E-EDID checksum failed!!\n");
-                       goto error;
-               }
-       }
-
-       return (struct edid *)edid;
-
-error:
-       kfree(edid);
-       return NULL;
-}
-
 static struct edid *
 hdmi_do_read_edid(struct omap_hdmi *hdmi,
                  struct edid *(*read)(struct omap_hdmi *hdmi,
@@ -411,28 +370,9 @@ hdmi_do_read_edid(struct omap_hdmi *hdmi,
        return edid;
 }
 
-static struct edid *hdmi_read_edid(struct omap_dss_device *dssdev)
-{
-       return hdmi_do_read_edid(dssdev_to_hdmi(dssdev), hdmi_read_edid_data,
-                                NULL);
-}
-
-static void hdmi_lost_hotplug(struct omap_dss_device *dssdev)
-{
-       struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);
-
-       hdmi4_cec_set_phys_addr(&hdmi->core, CEC_PHYS_ADDR_INVALID);
-}
-
 static const struct omap_dss_device_ops hdmi_ops = {
        .connect                = hdmi_connect,
        .disconnect             = hdmi_disconnect,
-
-       .read_edid              = hdmi_read_edid,
-
-       .hdmi = {
-               .lost_hotplug           = hdmi_lost_hotplug,
-       },
 };
 
 /* 
-----------------------------------------------------------------------------
@@ -804,7 +744,6 @@ static int hdmi4_init_output(struct omap_hdmi *hdmi)
        out->ops = &hdmi_ops;
        out->owner = THIS_MODULE;
        out->of_port = 0;
-       out->ops_flags = OMAP_DSS_DEVICE_OP_EDID;
 
        r = omapdss_device_init_output(out, &hdmi->bridge);
        if (r < 0) {
diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi5.c 
b/drivers/gpu/drm/omapdrm/dss/hdmi5.c
index f07fd5c6dc39..effe4a9401ff 100644
--- a/drivers/gpu/drm/omapdrm/dss/hdmi5.c
+++ b/drivers/gpu/drm/omapdrm/dss/hdmi5.c
@@ -319,43 +319,6 @@ static void hdmi_disconnect(struct omap_dss_device *src,
        omapdss_device_disconnect(dst, dst->next);
 }
 
-#define MAX_EDID       512
-
-static struct edid *hdmi_read_edid_data(struct omap_hdmi *hdmi,
-                                       struct drm_connector *connector)
-{
-       struct hdmi_core_data *core = &hdmi->core;
-       int max_ext_blocks = 3;
-       int r, n, i;
-       u8 *edid;
-
-       edid = kzalloc(MAX_EDID, GFP_KERNEL);
-       if (!edid)
-               return NULL;
-
-       r = hdmi5_core_ddc_read(core, edid, 0, EDID_LENGTH);
-       if (r)
-               goto error;
-
-       n = edid[0x7e];
-
-       if (n > max_ext_blocks)
-               n = max_ext_blocks;
-
-       for (i = 1; i <= n; i++) {
-               r = hdmi5_core_ddc_read(core, edid + i * EDID_LENGTH, i,
-                                       EDID_LENGTH);
-               if (r)
-                       goto error;
-       }
-
-       return (struct edid *)edid;
-
-error:
-       kfree(edid);
-       return NULL;
-}
-
 static struct edid *
 hdmi_do_read_edid(struct omap_hdmi *hdmi,
                  struct edid *(*read)(struct omap_hdmi *hdmi,
@@ -400,17 +363,9 @@ hdmi_do_read_edid(struct omap_hdmi *hdmi,
        return (struct edid *)edid;
 }
 
-static struct edid *hdmi_read_edid(struct omap_dss_device *dssdev)
-{
-       return hdmi_do_read_edid(dssdev_to_hdmi(dssdev), hdmi_read_edid_data,
-                                NULL);
-}
-
 static const struct omap_dss_device_ops hdmi_ops = {
        .connect                = hdmi_connect,
        .disconnect             = hdmi_disconnect,
-
-       .read_edid              = hdmi_read_edid,
 };
 
 /* 
-----------------------------------------------------------------------------
@@ -763,7 +718,6 @@ static int hdmi5_init_output(struct omap_hdmi *hdmi)
        out->ops = &hdmi_ops;
        out->owner = THIS_MODULE;
        out->of_port = 0;
-       out->ops_flags = OMAP_DSS_DEVICE_OP_EDID;
 
        r = omapdss_device_init_output(out, &hdmi->bridge);
        if (r < 0) {
diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h 
b/drivers/gpu/drm/omapdrm/dss/omapdss.h
index 30a12cf91cbb..cb79e05c902d 100644
--- a/drivers/gpu/drm/omapdrm/dss/omapdss.h
+++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h
@@ -285,10 +285,6 @@ struct omap_dss_writeback_info {
        u8 pre_mult_alpha;
 };
 
-struct omapdss_hdmi_ops {
-       void (*lost_hotplug)(struct omap_dss_device *dssdev);
-};
-
 struct omapdss_dsi_ops {
        void (*disable)(struct omap_dss_device *dssdev, bool disconnect_lanes,
                        bool enter_ulps);
@@ -356,36 +352,17 @@ struct omap_dss_device_ops {
        void (*set_timings)(struct omap_dss_device *dssdev,
                            const struct drm_display_mode *mode);
 
-       bool (*detect)(struct omap_dss_device *dssdev);
-
-       void (*register_hpd_cb)(struct omap_dss_device *dssdev,
-                               void (*cb)(void *cb_data,
-                                         enum drm_connector_status status),
-                               void *cb_data);
-       void (*unregister_hpd_cb)(struct omap_dss_device *dssdev);
-
-       struct edid *(*read_edid)(struct omap_dss_device *dssdev);
-
        int (*get_modes)(struct omap_dss_device *dssdev,
                         struct drm_connector *connector);
 
-       union {
-               const struct omapdss_hdmi_ops hdmi;
-               const struct omapdss_dsi_ops dsi;
-       };
+       const struct omapdss_dsi_ops dsi;
 };
 
 /**
  * enum omap_dss_device_ops_flag - Indicates which device ops are supported
- * @OMAP_DSS_DEVICE_OP_DETECT: The device supports output connection detection
- * @OMAP_DSS_DEVICE_OP_HPD: The device supports all hot-plug-related operations
- * @OMAP_DSS_DEVICE_OP_EDID: The device supports reading EDID
  * @OMAP_DSS_DEVICE_OP_MODES: The device supports reading modes
  */
 enum omap_dss_device_ops_flag {
-       OMAP_DSS_DEVICE_OP_DETECT = BIT(0),
-       OMAP_DSS_DEVICE_OP_HPD = BIT(1),
-       OMAP_DSS_DEVICE_OP_EDID = BIT(2),
        OMAP_DSS_DEVICE_OP_MODES = BIT(3),
 };
 
diff --git a/drivers/gpu/drm/omapdrm/omap_connector.c 
b/drivers/gpu/drm/omapdrm/omap_connector.c
index c636ae228130..baa31ed1f993 100644
--- a/drivers/gpu/drm/omapdrm/omap_connector.c
+++ b/drivers/gpu/drm/omapdrm/omap_connector.c
@@ -19,111 +19,22 @@
 struct omap_connector {
        struct drm_connector base;
        struct omap_dss_device *output;
-       struct omap_dss_device *hpd;
 };
 
-static void omap_connector_hpd_notify(struct drm_connector *connector,
-                                     enum drm_connector_status status)
-{
-       struct omap_connector *omap_connector = to_omap_connector(connector);
-       struct omap_dss_device *dssdev;
-
-       if (status != connector_status_disconnected)
-               return;
-
-       /*
-        * Notify all devics in the pipeline of disconnection. This is required
-        * to let the HDMI encoders reset their internal state related to
-        * connection status, such as the CEC address.
-        */
-       for (dssdev = omap_connector->output; dssdev; dssdev = dssdev->next) {
-               if (dssdev->ops && dssdev->ops->hdmi.lost_hotplug)
-                       dssdev->ops->hdmi.lost_hotplug(dssdev);
-       }
-}
-
-static void omap_connector_hpd_cb(void *cb_data,
-                                 enum drm_connector_status status)
-{
-       struct omap_connector *omap_connector = cb_data;
-       struct drm_connector *connector = &omap_connector->base;
-       struct drm_device *dev = connector->dev;
-       enum drm_connector_status old_status;
-
-       mutex_lock(&dev->mode_config.mutex);
-       old_status = connector->status;
-       connector->status = status;
-       mutex_unlock(&dev->mode_config.mutex);
-
-       if (old_status == status)
-               return;
-
-       omap_connector_hpd_notify(connector, status);
-
-       drm_kms_helper_hotplug_event(dev);
-}
-
-void omap_connector_enable_hpd(struct drm_connector *connector)
-{
-       struct omap_connector *omap_connector = to_omap_connector(connector);
-       struct omap_dss_device *hpd = omap_connector->hpd;
-
-       if (hpd)
-               hpd->ops->register_hpd_cb(hpd, omap_connector_hpd_cb,
-                                         omap_connector);
-}
-
-void omap_connector_disable_hpd(struct drm_connector *connector)
-{
-       struct omap_connector *omap_connector = to_omap_connector(connector);
-       struct omap_dss_device *hpd = omap_connector->hpd;
-
-       if (hpd)
-               hpd->ops->unregister_hpd_cb(hpd);
-}
-
-static struct omap_dss_device *
-omap_connector_find_device(struct drm_connector *connector,
-                          enum omap_dss_device_ops_flag op)
-{
-       struct omap_connector *omap_connector = to_omap_connector(connector);
-       struct omap_dss_device *dssdev = NULL;
-       struct omap_dss_device *d;
-
-       for (d = omap_connector->output; d; d = d->next) {
-               if (d->ops_flags & op)
-                       dssdev = d;
-       }
-
-       return dssdev;
-}
-
 static enum drm_connector_status omap_connector_detect(
                struct drm_connector *connector, bool force)
 {
-       struct omap_dss_device *dssdev;
        enum drm_connector_status status;
 
-       dssdev = omap_connector_find_device(connector,
-                                           OMAP_DSS_DEVICE_OP_DETECT);
-
-       if (dssdev) {
-               status = dssdev->ops->detect(dssdev)
-                      ? connector_status_connected
-                      : connector_status_disconnected;
-
-               omap_connector_hpd_notify(connector, status);
-       } else {
-               switch (connector->connector_type) {
-               case DRM_MODE_CONNECTOR_DPI:
-               case DRM_MODE_CONNECTOR_LVDS:
-               case DRM_MODE_CONNECTOR_DSI:
-                       status = connector_status_connected;
-                       break;
-               default:
-                       status = connector_status_unknown;
-                       break;
-               }
+       switch (connector->connector_type) {
+       case DRM_MODE_CONNECTOR_DPI:
+       case DRM_MODE_CONNECTOR_LVDS:
+       case DRM_MODE_CONNECTOR_DSI:
+               status = connector_status_connected;
+               break;
+       default:
+               status = connector_status_unknown;
+               break;
        }
 
        VERB("%s: %d (force=%d)", connector->name, status, force);
@@ -137,14 +48,6 @@ static void omap_connector_destroy(struct drm_connector 
*connector)
 
        DBG("%s", connector->name);
 
-       if (omap_connector->hpd) {
-               struct omap_dss_device *hpd = omap_connector->hpd;
-
-               hpd->ops->unregister_hpd_cb(hpd);
-               omapdss_device_put(hpd);
-               omap_connector->hpd = NULL;
-       }
-
        drm_connector_unregister(connector);
        drm_connector_cleanup(connector);
 
@@ -153,63 +56,27 @@ static void omap_connector_destroy(struct drm_connector 
*connector)
        kfree(omap_connector);
 }
 
-static int omap_connector_get_modes_edid(struct drm_connector *connector,
-                                        struct omap_dss_device *dssdev)
-{
-       enum drm_connector_status status;
-       struct edid *edid;
-       int n;
-
-       status = omap_connector_detect(connector, false);
-       if (status != connector_status_connected)
-               goto no_edid;
-
-       edid = dssdev->ops->read_edid(dssdev);
-       if (!edid || !drm_edid_is_valid(edid)) {
-               kfree(edid);
-               goto no_edid;
-       }
-
-       drm_connector_update_edid_property(connector, edid);
-       n = drm_add_edid_modes(connector, edid);
-
-       kfree(edid);
-       return n;
-
-no_edid:
-       drm_connector_update_edid_property(connector, NULL);
-       return 0;
-}
-
 static int omap_connector_get_modes(struct drm_connector *connector)
 {
-       struct omap_dss_device *dssdev;
+       struct omap_connector *omap_connector = to_omap_connector(connector);
+       struct omap_dss_device *dssdev = NULL;
+       struct omap_dss_device *d;
 
        DBG("%s", connector->name);
 
        /*
-        * If display exposes EDID, then we parse that in the normal way to
-        * build table of supported modes.
+        * If the display pipeline reports modes (e.g. with a fixed resolution
+        * panel or an analog TV output), query it.
         */
-       dssdev = omap_connector_find_device(connector,
-                                           OMAP_DSS_DEVICE_OP_EDID);
-       if (dssdev)
-               return omap_connector_get_modes_edid(connector, dssdev);
+       for (d = omap_connector->output; d; d = d->next) {
+               if (d->ops_flags & OMAP_DSS_DEVICE_OP_MODES)
+                       dssdev = d;
+       }
 
-       /*
-        * Otherwise if the display pipeline reports modes (e.g. with a fixed
-        * resolution panel or an analog TV output), query it.
-        */
-       dssdev = omap_connector_find_device(connector,
-                                           OMAP_DSS_DEVICE_OP_MODES);
        if (dssdev)
                return dssdev->ops->get_modes(dssdev, connector);
 
-       /*
-        * We can't retrieve modes, which can happen for instance for a DVI or
-        * VGA output with the DDC bus unconnected. The KMS core will add the
-        * default modes.
-        */
+       /* We can't retrieve modes. The KMS core will add the default modes. */
        return 0;
 }
 
@@ -290,7 +157,6 @@ struct drm_connector *omap_connector_init(struct drm_device 
*dev,
 {
        struct drm_connector *connector = NULL;
        struct omap_connector *omap_connector;
-       struct omap_dss_device *dssdev;
 
        DBG("%s", output->name);
 
@@ -308,24 +174,6 @@ struct drm_connector *omap_connector_init(struct 
drm_device *dev,
                           omap_connector_get_type(output));
        drm_connector_helper_add(connector, &omap_connector_helper_funcs);
 
-       /*
-        * Initialize connector status handling. First try to find a device that
-        * supports hot-plug reporting. If it fails, fall back to a device that
-        * support polling. If that fails too, we don't support hot-plug
-        * detection at all.
-        */
-       dssdev = omap_connector_find_device(connector, OMAP_DSS_DEVICE_OP_HPD);
-       if (dssdev) {
-               omap_connector->hpd = omapdss_device_get(dssdev);
-               connector->polled = DRM_CONNECTOR_POLL_HPD;
-       } else {
-               dssdev = omap_connector_find_device(connector,
-                                                   OMAP_DSS_DEVICE_OP_DETECT);
-               if (dssdev)
-                       connector->polled = DRM_CONNECTOR_POLL_CONNECT |
-                                           DRM_CONNECTOR_POLL_DISCONNECT;
-       }
-
        return connector;
 
 fail:
diff --git a/drivers/gpu/drm/omapdrm/omap_connector.h 
b/drivers/gpu/drm/omapdrm/omap_connector.h
index 4aa5608f4bbe..0ecd4f1655b7 100644
--- a/drivers/gpu/drm/omapdrm/omap_connector.h
+++ b/drivers/gpu/drm/omapdrm/omap_connector.h
@@ -21,8 +21,6 @@ struct omap_dss_device;
 struct drm_connector *omap_connector_init(struct drm_device *dev,
                                          struct omap_dss_device *output,
                                          struct drm_encoder *encoder);
-void omap_connector_enable_hpd(struct drm_connector *connector);
-void omap_connector_disable_hpd(struct drm_connector *connector);
 enum drm_mode_status omap_connector_mode_fixup(struct omap_dss_device *dssdev,
                                        const struct drm_display_mode *mode,
                                        struct drm_display_mode *adjusted_mode);
diff --git a/drivers/gpu/drm/omapdrm/omap_drv.c 
b/drivers/gpu/drm/omapdrm/omap_drv.c
index 47afa37055b3..e6a065030523 100644
--- a/drivers/gpu/drm/omapdrm/omap_drv.c
+++ b/drivers/gpu/drm/omapdrm/omap_drv.c
@@ -422,9 +422,7 @@ static void omap_modeset_enable_external_hpd(struct 
drm_device *ddev)
                if (!connector)
                        continue;
 
-               if (priv->pipes[i].output->next)
-                       omap_connector_enable_hpd(connector);
-               else
+               if (priv->pipes[i].output->bridge)
                        drm_bridge_connector_enable_hpd(connector);
        }
 }
@@ -443,9 +441,7 @@ static void omap_modeset_disable_external_hpd(struct 
drm_device *ddev)
                if (!connector)
                        continue;
 
-               if (priv->pipes[i].output->next)
-                       omap_connector_disable_hpd(connector);
-               else
+               if (priv->pipes[i].output->bridge)
                        drm_bridge_connector_disable_hpd(connector);
        }
 }
-- 
Regards,

Laurent Pinchart

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