>-----Original Message-----
>From: C, Ramalingam
>Sent: Saturday, July 14, 2018 8:45 AM
>To: intel-gfx@lists.freedesktop.org; dri-de...@lists.freedesktop.org;
>dan...@ffwll.ch; seanp...@chromium.org; Winkler, Tomas
><tomas.wink...@intel.com>; Usyskin, Alexander <alexander.usys...@intel.com>;
>Shankar, Uma <uma.shan...@intel.com>
>Cc: Sharma, Shashank <shashank.sha...@intel.com>; C, Ramalingam
><ramalinga...@intel.com>
>Subject: [PATCH v6 05/35] drm/i915: wrapping all hdcp var into intel_hdcp
>
>Considering significant number of HDCP specific variables, it will be clean to
>have
>separate struct for HDCP.
>
>New structure called intel_hdcp is added within intel_connector.
>
>v2:
> struct hdcp statically allocated. [Sean Paul]
> enable and disable function parameters are retained.[Sean Paul]
>v3:
> No Changes.
>v4:
> Commit msg is rephrased [Uma]
>v5:
> Comment for mutex definition.
>v6:
> hdcp_ prefix from all intel_hdcp members are removed [Sean Paul]
> inline function intel_hdcp_to_connector is defined [Sean Paul]
>
Changes look ok to me.
Reviewed-by: Uma Shankar <uma.shan...@intel.com>
>Signed-off-by: Ramalingam C <ramalinga...@intel.com>
>Reviewed-by: Sean Paul <seanp...@chromium.org>
>---
> drivers/gpu/drm/i915/intel_display.c | 6 +-
> drivers/gpu/drm/i915/intel_drv.h | 15 +++--
> drivers/gpu/drm/i915/intel_hdcp.c | 107 +++++++++++++++++++----------------
> 3 files changed, 72 insertions(+), 56 deletions(-)
>
>diff --git a/drivers/gpu/drm/i915/intel_display.c
>b/drivers/gpu/drm/i915/intel_display.c
>index 8f3199b06d1f..b8106f0fd64b 100644
>--- a/drivers/gpu/drm/i915/intel_display.c
>+++ b/drivers/gpu/drm/i915/intel_display.c
>@@ -15878,9 +15878,9 @@ static void intel_hpd_poll_fini(struct drm_device
>*dev)
> for_each_intel_connector_iter(connector, &conn_iter) {
> if (connector->modeset_retry_work.func)
> cancel_work_sync(&connector->modeset_retry_work);
>- if (connector->hdcp_shim) {
>- cancel_delayed_work_sync(&connector-
>>hdcp_check_work);
>- cancel_work_sync(&connector->hdcp_prop_work);
>+ if (connector->hdcp.shim) {
>+ cancel_delayed_work_sync(&connector-
>>hdcp.check_work);
>+ cancel_work_sync(&connector->hdcp.prop_work);
> }
> }
> drm_connector_list_iter_end(&conn_iter);
>diff --git a/drivers/gpu/drm/i915/intel_drv.h
>b/drivers/gpu/drm/i915/intel_drv.h
>index 61e715ddd0d5..c32665136d5d 100644
>--- a/drivers/gpu/drm/i915/intel_drv.h
>+++ b/drivers/gpu/drm/i915/intel_drv.h
>@@ -378,6 +378,15 @@ struct intel_hdcp_shim {
> bool *hdcp_capable);
> };
>
>+struct intel_hdcp {
>+ const struct intel_hdcp_shim *shim;
>+ /* Mutex for hdcp state of the connector */
>+ struct mutex mutex;
>+ uint64_t value;
>+ struct delayed_work check_work;
>+ struct work_struct prop_work;
>+};
>+
> struct intel_connector {
> struct drm_connector base;
> /*
>@@ -410,11 +419,7 @@ struct intel_connector {
> /* Work struct to schedule a uevent on link train failure */
> struct work_struct modeset_retry_work;
>
>- const struct intel_hdcp_shim *hdcp_shim;
>- struct mutex hdcp_mutex;
>- uint64_t hdcp_value; /* protected by hdcp_mutex */
>- struct delayed_work hdcp_check_work;
>- struct work_struct hdcp_prop_work;
>+ struct intel_hdcp hdcp;
> };
>
> struct intel_digital_connector_state {
>diff --git a/drivers/gpu/drm/i915/intel_hdcp.c
>b/drivers/gpu/drm/i915/intel_hdcp.c
>index 0cc6a861bcf8..55bc4d423187 100644
>--- a/drivers/gpu/drm/i915/intel_hdcp.c
>+++ b/drivers/gpu/drm/i915/intel_hdcp.c
>@@ -626,6 +626,7 @@ struct intel_digital_port *conn_to_dig_port(struct
>intel_connector *connector)
>
> static int _intel_hdcp_disable(struct intel_connector *connector) {
>+ struct intel_hdcp *hdcp = &connector->hdcp;
> struct drm_i915_private *dev_priv = connector->base.dev->dev_private;
> struct intel_digital_port *intel_dig_port = conn_to_dig_port(connector);
> enum port port = intel_dig_port->base.port; @@ -641,7 +642,7 @@
>static int _intel_hdcp_disable(struct intel_connector *connector)
> return -ETIMEDOUT;
> }
>
>- ret = connector->hdcp_shim->toggle_signalling(intel_dig_port, false);
>+ ret = hdcp->shim->toggle_signalling(intel_dig_port, false);
> if (ret) {
> DRM_ERROR("Failed to disable HDCP signalling\n");
> return ret;
>@@ -653,6 +654,7 @@ static int _intel_hdcp_disable(struct intel_connector
>*connector)
>
> static int _intel_hdcp_enable(struct intel_connector *connector) {
>+ struct intel_hdcp *hdcp = &connector->hdcp;
> struct drm_i915_private *dev_priv = connector->base.dev->dev_private;
> int i, ret, tries = 3;
>
>@@ -677,8 +679,7 @@ static int _intel_hdcp_enable(struct intel_connector
>*connector)
>
> /* Incase of authentication failures, HDCP spec expects reauth. */
> for (i = 0; i < tries; i++) {
>- ret = intel_hdcp_auth(conn_to_dig_port(connector),
>- connector->hdcp_shim);
>+ ret = intel_hdcp_auth(conn_to_dig_port(connector), hdcp-
>>shim);
> if (!ret)
> return 0;
>
>@@ -692,38 +693,46 @@ static int _intel_hdcp_enable(struct intel_connector
>*connector)
> return ret;
> }
>
>+static inline
>+struct intel_connector *intel_hdcp_to_connector(struct intel_hdcp
>+*hdcp) {
>+ return container_of(hdcp, struct intel_connector, hdcp); }
>+
> static void intel_hdcp_check_work(struct work_struct *work) {
>- struct intel_connector *connector =
>container_of(to_delayed_work(work),
>- struct intel_connector,
>- hdcp_check_work);
>+ struct intel_hdcp *hdcp = container_of(to_delayed_work(work),
>+ struct intel_hdcp,
>+ check_work);
>+ struct intel_connector *connector = intel_hdcp_to_connector(hdcp);
>+
> if (!intel_hdcp_check_link(connector))
>- schedule_delayed_work(&connector->hdcp_check_work,
>+ schedule_delayed_work(&hdcp->check_work,
> DRM_HDCP_CHECK_PERIOD_MS);
> }
>
> static void intel_hdcp_prop_work(struct work_struct *work) {
>- struct intel_connector *connector = container_of(work,
>- struct intel_connector,
>- hdcp_prop_work);
>+ struct intel_hdcp *hdcp = container_of(work, struct intel_hdcp,
>+ prop_work);
>+ struct intel_connector *connector = intel_hdcp_to_connector(hdcp);
> struct drm_device *dev = connector->base.dev;
> struct drm_connector_state *state;
>
> drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
>- mutex_lock(&connector->hdcp_mutex);
>+ mutex_lock(&hdcp->mutex);
>
> /*
> * This worker is only used to flip between ENABLED/DESIRED. Either of
>- * those to UNDESIRED is handled by core. If hdcp_value == UNDESIRED,
>+ * those to UNDESIRED is handled by core. If value == UNDESIRED,
> * we're running just after hdcp has been disabled, so just exit
> */
>- if (connector->hdcp_value !=
>DRM_MODE_CONTENT_PROTECTION_UNDESIRED) {
>+ if (hdcp->value != DRM_MODE_CONTENT_PROTECTION_UNDESIRED) {
> state = connector->base.state;
>- state->content_protection = connector->hdcp_value;
>+ state->content_protection = hdcp->value;
> }
>
>- mutex_unlock(&connector->hdcp_mutex);
>+ mutex_unlock(&hdcp->mutex);
> drm_modeset_unlock(&dev->mode_config.connection_mutex);
> }
>
>@@ -735,8 +744,9 @@ bool is_hdcp_supported(struct drm_i915_private
>*dev_priv, enum port port) }
>
> int intel_hdcp_init(struct intel_connector *connector,
>- const struct intel_hdcp_shim *hdcp_shim)
>+ const struct intel_hdcp_shim *shim)
> {
>+ struct intel_hdcp *hdcp = &connector->hdcp;
> int ret;
>
> ret = drm_connector_attach_content_protection_property(
>@@ -744,51 +754,53 @@ int intel_hdcp_init(struct intel_connector *connector,
> if (ret)
> return ret;
>
>- connector->hdcp_shim = hdcp_shim;
>- mutex_init(&connector->hdcp_mutex);
>- INIT_DELAYED_WORK(&connector->hdcp_check_work,
>intel_hdcp_check_work);
>- INIT_WORK(&connector->hdcp_prop_work, intel_hdcp_prop_work);
>+ hdcp->shim = shim;
>+ mutex_init(&hdcp->mutex);
>+ INIT_DELAYED_WORK(&hdcp->check_work, intel_hdcp_check_work);
>+ INIT_WORK(&hdcp->prop_work, intel_hdcp_prop_work);
> return 0;
> }
>
> int intel_hdcp_enable(struct intel_connector *connector) {
>+ struct intel_hdcp *hdcp = &connector->hdcp;
> int ret;
>
>- if (!connector->hdcp_shim)
>+ if (!hdcp->shim)
> return -ENOENT;
>
>- mutex_lock(&connector->hdcp_mutex);
>+ mutex_lock(&hdcp->mutex);
>
> ret = _intel_hdcp_enable(connector);
> if (ret)
> goto out;
>
>- connector->hdcp_value =
>DRM_MODE_CONTENT_PROTECTION_ENABLED;
>- schedule_work(&connector->hdcp_prop_work);
>- schedule_delayed_work(&connector->hdcp_check_work,
>+ hdcp->value = DRM_MODE_CONTENT_PROTECTION_ENABLED;
>+ schedule_work(&hdcp->prop_work);
>+ schedule_delayed_work(&hdcp->check_work,
> DRM_HDCP_CHECK_PERIOD_MS);
> out:
>- mutex_unlock(&connector->hdcp_mutex);
>+ mutex_unlock(&hdcp->mutex);
> return ret;
> }
>
> int intel_hdcp_disable(struct intel_connector *connector) {
>+ struct intel_hdcp *hdcp = &connector->hdcp;
> int ret = 0;
>
>- if (!connector->hdcp_shim)
>+ if (!hdcp->shim)
> return -ENOENT;
>
>- mutex_lock(&connector->hdcp_mutex);
>+ mutex_lock(&hdcp->mutex);
>
>- if (connector->hdcp_value !=
>DRM_MODE_CONTENT_PROTECTION_UNDESIRED) {
>- connector->hdcp_value =
>DRM_MODE_CONTENT_PROTECTION_UNDESIRED;
>+ if (hdcp->value != DRM_MODE_CONTENT_PROTECTION_UNDESIRED) {
>+ hdcp->value =
>DRM_MODE_CONTENT_PROTECTION_UNDESIRED;
> ret = _intel_hdcp_disable(connector);
> }
>
>- mutex_unlock(&connector->hdcp_mutex);
>- cancel_delayed_work_sync(&connector->hdcp_check_work);
>+ mutex_unlock(&hdcp->mutex);
>+ cancel_delayed_work_sync(&hdcp->check_work);
> return ret;
> }
>
>@@ -828,17 +840,18 @@ void intel_hdcp_atomic_check(struct drm_connector
>*connector,
> /* Implements Part 3 of the HDCP authorization procedure */ int
>intel_hdcp_check_link(struct intel_connector *connector) {
>+ struct intel_hdcp *hdcp = &connector->hdcp;
> struct drm_i915_private *dev_priv = connector->base.dev->dev_private;
> struct intel_digital_port *intel_dig_port = conn_to_dig_port(connector);
> enum port port = intel_dig_port->base.port;
> int ret = 0;
>
>- if (!connector->hdcp_shim)
>+ if (!hdcp->shim)
> return -ENOENT;
>
>- mutex_lock(&connector->hdcp_mutex);
>+ mutex_lock(&hdcp->mutex);
>
>- if (connector->hdcp_value ==
>DRM_MODE_CONTENT_PROTECTION_UNDESIRED)
>+ if (hdcp->value == DRM_MODE_CONTENT_PROTECTION_UNDESIRED)
> goto out;
>
> if (!(I915_READ(PORT_HDCP_STATUS(port)) & HDCP_STATUS_ENC)) {
>@@ -846,17 +859,15 @@ int intel_hdcp_check_link(struct intel_connector
>*connector)
> connector->base.name, connector->base.base.id,
> I915_READ(PORT_HDCP_STATUS(port)));
> ret = -ENXIO;
>- connector->hdcp_value =
>DRM_MODE_CONTENT_PROTECTION_DESIRED;
>- schedule_work(&connector->hdcp_prop_work);
>+ hdcp->value = DRM_MODE_CONTENT_PROTECTION_DESIRED;
>+ schedule_work(&hdcp->prop_work);
> goto out;
> }
>
>- if (connector->hdcp_shim->check_link(intel_dig_port)) {
>- if (connector->hdcp_value !=
>- DRM_MODE_CONTENT_PROTECTION_UNDESIRED) {
>- connector->hdcp_value =
>-
> DRM_MODE_CONTENT_PROTECTION_ENABLED;
>- schedule_work(&connector->hdcp_prop_work);
>+ if (hdcp->shim->check_link(intel_dig_port)) {
>+ if (hdcp->value !=
>DRM_MODE_CONTENT_PROTECTION_UNDESIRED) {
>+ hdcp->value =
>DRM_MODE_CONTENT_PROTECTION_ENABLED;
>+ schedule_work(&hdcp->prop_work);
> }
> goto out;
> }
>@@ -867,20 +878,20 @@ int intel_hdcp_check_link(struct intel_connector
>*connector)
> ret = _intel_hdcp_disable(connector);
> if (ret) {
> DRM_ERROR("Failed to disable hdcp (%d)\n", ret);
>- connector->hdcp_value =
>DRM_MODE_CONTENT_PROTECTION_DESIRED;
>- schedule_work(&connector->hdcp_prop_work);
>+ hdcp->value = DRM_MODE_CONTENT_PROTECTION_DESIRED;
>+ schedule_work(&hdcp->prop_work);
> goto out;
> }
>
> ret = _intel_hdcp_enable(connector);
> if (ret) {
> DRM_ERROR("Failed to enable hdcp (%d)\n", ret);
>- connector->hdcp_value =
>DRM_MODE_CONTENT_PROTECTION_DESIRED;
>- schedule_work(&connector->hdcp_prop_work);
>+ hdcp->value = DRM_MODE_CONTENT_PROTECTION_DESIRED;
>+ schedule_work(&hdcp->prop_work);
> goto out;
> }
>
> out:
>- mutex_unlock(&connector->hdcp_mutex);
>+ mutex_unlock(&hdcp->mutex);
> return ret;
> }
>--
>2.7.4
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