[PATCH v2 21/42] drm/i915: wrapping all hdcp var into intel_hdcp

Considering the upcoming significant no HDCP2.2 variables, it will be clean to have separate struct fo HDCP.

New structure called intel_hdcp is introduced.

v2: struct hdcp statically allocated. [Sean Paul] enable and disable function parameters are retained.[Sean Paul]

Signed-off-by: Ramalingam C ramalingam.c@intel.com --- drivers/gpu/drm/i915/intel_display.c | 7 +-- drivers/gpu/drm/i915/intel_drv.h | 14 ++++-- drivers/gpu/drm/i915/intel_hdcp.c | 94 ++++++++++++++++++++---------------- 3 files changed, 66 insertions(+), 49 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 65c8487be7c7..197639f39765 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -15396,9 +15396,10 @@ 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.hdcp_shim) { + cancel_delayed_work_sync( + &connector->hdcp.hdcp_check_work); + cancel_work_sync(&connector->hdcp.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 8f38e584d375..1b2560ec52ab 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -376,6 +376,14 @@ struct intel_hdcp_shim { bool *hdcp_capable); };

+struct intel_hdcp { + 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_connector { struct drm_connector base; /* @@ -408,11 +416,7 @@ 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 14ca5d3057a7..1cca4f349064 100644 --- a/drivers/gpu/drm/i915/intel_hdcp.c +++ b/drivers/gpu/drm/i915/intel_hdcp.c @@ -547,6 +547,7 @@ 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; @@ -562,7 +563,7 @@ static int _intel_hdcp_disable(struct intel_connector *connector) return -ETIMEDOUT; }

- ret = connector->hdcp_shim->toggle_signalling(intel_dig_port, false); + ret = hdcp->hdcp_shim->toggle_signalling(intel_dig_port, false); if (ret) { DRM_ERROR("Failed to disable HDCP signalling\n"); return ret; @@ -574,6 +575,7 @@ 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;

@@ -599,7 +601,7 @@ 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); + hdcp->hdcp_shim); if (!ret) return 0;

@@ -615,36 +617,42 @@ static int _intel_hdcp_enable(struct intel_connector *connector)

static void intel_hdcp_check_work(struct work_struct *work) { - struct intel_connector *connector = container_of(to_delayed_work(work), + struct intel_hdcp *hdcp = container_of(to_delayed_work(work), + struct intel_hdcp, + hdcp_check_work); + struct intel_connector *connector = container_of(hdcp, struct intel_connector, - hdcp_check_work); + hdcp); + if (!intel_hdcp_check_link(connector)) - schedule_delayed_work(&connector->hdcp_check_work, + schedule_delayed_work(&hdcp->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_hdcp *hdcp = container_of(work, struct intel_hdcp, + hdcp_prop_work); + struct intel_connector *connector = container_of(hdcp, struct intel_connector, - hdcp_prop_work); + 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->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, * we're running just after hdcp has been disabled, so just exit */ - if (connector->hdcp_value != DRM_MODE_CONTENT_PROTECTION_UNDESIRED) { + if (hdcp->hdcp_value != DRM_MODE_CONTENT_PROTECTION_UNDESIRED) { state = connector->base.state; - state->content_protection = connector->hdcp_value; + state->content_protection = hdcp->hdcp_value; }

- mutex_unlock(&connector->hdcp_mutex); + mutex_unlock(&hdcp->hdcp_mutex); drm_modeset_unlock(&dev->mode_config.connection_mutex); }

@@ -658,6 +666,7 @@ 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) { + struct intel_hdcp *hdcp = &connector->hdcp; int ret;

ret = drm_connector_attach_content_protection_property( @@ -665,51 +674,53 @@ 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->hdcp_shim = hdcp_shim; + mutex_init(&hdcp->hdcp_mutex); + INIT_DELAYED_WORK(&hdcp->hdcp_check_work, intel_hdcp_check_work); + INIT_WORK(&hdcp->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->hdcp_shim) return -ENOENT;

- mutex_lock(&connector->hdcp_mutex); + mutex_lock(&hdcp->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->hdcp_value = DRM_MODE_CONTENT_PROTECTION_ENABLED; + schedule_work(&hdcp->hdcp_prop_work); + schedule_delayed_work(&hdcp->hdcp_check_work, DRM_HDCP_CHECK_PERIOD_MS); out: - mutex_unlock(&connector->hdcp_mutex); + mutex_unlock(&hdcp->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->hdcp_shim) return -ENOENT;

- mutex_lock(&connector->hdcp_mutex); + mutex_lock(&hdcp->hdcp_mutex);

- if (connector->hdcp_value != DRM_MODE_CONTENT_PROTECTION_UNDESIRED) { - connector->hdcp_value = DRM_MODE_CONTENT_PROTECTION_UNDESIRED; + if (hdcp->hdcp_value != DRM_MODE_CONTENT_PROTECTION_UNDESIRED) { + hdcp->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->hdcp_mutex); + cancel_delayed_work_sync(&hdcp->hdcp_check_work); return ret; }

@@ -749,17 +760,18 @@ 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->hdcp_shim) return -ENOENT;

- mutex_lock(&connector->hdcp_mutex); + mutex_lock(&hdcp->hdcp_mutex);

- if (connector->hdcp_value == DRM_MODE_CONTENT_PROTECTION_UNDESIRED) + if (hdcp->hdcp_value == DRM_MODE_CONTENT_PROTECTION_UNDESIRED) goto out;

if (!(I915_READ(PORT_HDCP_STATUS(port)) & HDCP_STATUS_ENC)) { @@ -767,17 +779,17 @@ 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->hdcp_value = DRM_MODE_CONTENT_PROTECTION_DESIRED; + schedule_work(&hdcp->hdcp_prop_work); goto out; }

- if (connector->hdcp_shim->check_link(intel_dig_port)) { - if (connector->hdcp_value != + if (hdcp->hdcp_shim->check_link(intel_dig_port)) { + if (hdcp->hdcp_value != DRM_MODE_CONTENT_PROTECTION_UNDESIRED) { - connector->hdcp_value = + hdcp->hdcp_value = DRM_MODE_CONTENT_PROTECTION_ENABLED; - schedule_work(&connector->hdcp_prop_work); + schedule_work(&hdcp->hdcp_prop_work); } goto out; } @@ -788,20 +800,20 @@ 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->hdcp_value = DRM_MODE_CONTENT_PROTECTION_DESIRED; + schedule_work(&hdcp->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->hdcp_value = DRM_MODE_CONTENT_PROTECTION_DESIRED; + schedule_work(&hdcp->hdcp_prop_work); goto out; }

out: - mutex_unlock(&connector->hdcp_mutex); + mutex_unlock(&hdcp->hdcp_mutex); return ret; }