struct vc4_hdmi *vc4_hdmi = connector_to_vc4_hdmi(connector);
bool connected = false;
+ mutex_lock(&vc4_hdmi->mutex);
+
WARN_ON(pm_runtime_resume_and_get(&vc4_hdmi->pdev->dev));
if (vc4_hdmi->hpd_gpio) {
vc4_hdmi_enable_scrambling(&vc4_hdmi->encoder.base.base);
pm_runtime_put(&vc4_hdmi->pdev->dev);
+ mutex_unlock(&vc4_hdmi->mutex);
return connector_status_connected;
}
cec_phys_addr_invalidate(vc4_hdmi->cec_adap);
pm_runtime_put(&vc4_hdmi->pdev->dev);
+ mutex_unlock(&vc4_hdmi->mutex);
return connector_status_disconnected;
}
int ret = 0;
struct edid *edid;
+ mutex_lock(&vc4_hdmi->mutex);
+
edid = drm_get_edid(connector, vc4_hdmi->ddc);
cec_s_phys_addr_from_edid(vc4_hdmi->cec_adap, edid);
- if (!edid)
- return -ENODEV;
+ if (!edid) {
+ ret = -ENODEV;
+ goto out;
+ }
vc4_encoder->hdmi_monitor = drm_detect_hdmi_monitor(edid);
}
}
+out:
+ mutex_unlock(&vc4_hdmi->mutex);
+
return ret;
}
union hdmi_infoframe frame;
int ret;
+ lockdep_assert_held(&vc4_hdmi->mutex);
+
ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi,
connector, mode);
if (ret < 0) {
struct drm_connector_state *conn_state = connector->state;
union hdmi_infoframe frame;
+ lockdep_assert_held(&vc4_hdmi->mutex);
+
if (!vc4_hdmi->variant->supports_hdr)
return;
{
struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
+ lockdep_assert_held(&vc4_hdmi->mutex);
+
vc4_hdmi_set_avi_infoframe(encoder);
vc4_hdmi_set_spd_infoframe(encoder);
/*
struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
struct drm_display_info *display = &vc4_hdmi->connector.display_info;
+ lockdep_assert_held(&vc4_hdmi->mutex);
+
if (!vc4_encoder->hdmi_monitor)
return false;
struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
unsigned long flags;
+ lockdep_assert_held(&vc4_hdmi->mutex);
+
if (!vc4_hdmi_supports_scrambling(encoder, mode))
return;
struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
unsigned long flags;
+ mutex_lock(&vc4_hdmi->mutex);
+
spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
HDMI_WRITE(HDMI_RAM_PACKET_CONFIG, 0);
spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
vc4_hdmi_disable_scrambling(encoder);
+
+ mutex_unlock(&vc4_hdmi->mutex);
}
static void vc4_hdmi_encoder_post_crtc_powerdown(struct drm_encoder *encoder,
unsigned long flags;
int ret;
+ mutex_lock(&vc4_hdmi->mutex);
+
spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
HDMI_WRITE(HDMI_VID_CTL,
HDMI_READ(HDMI_VID_CTL) | VC4_HD_VID_CTL_BLANKPIX);
ret = pm_runtime_put(&vc4_hdmi->pdev->dev);
if (ret < 0)
DRM_ERROR("Failed to release power domain: %d\n", ret);
+
+ mutex_unlock(&vc4_hdmi->mutex);
}
static void vc4_hdmi_encoder_disable(struct drm_encoder *encoder)
unsigned long flags;
int ret;
+ mutex_lock(&vc4_hdmi->mutex);
+
/*
* As stated in RPi's vc4 firmware "HDMI state machine (HSM) clock must
* be faster than pixel clock, infinitesimally faster, tested in
ret = clk_set_min_rate(vc4_hdmi->hsm_clock, hsm_rate);
if (ret) {
DRM_ERROR("Failed to set HSM clock rate: %d\n", ret);
- return;
+ goto out;
}
ret = pm_runtime_resume_and_get(&vc4_hdmi->pdev->dev);
if (ret < 0) {
DRM_ERROR("Failed to retain power domain: %d\n", ret);
- return;
+ goto out;
}
ret = clk_set_rate(vc4_hdmi->pixel_clock, pixel_rate);
if (vc4_hdmi->variant->set_timings)
vc4_hdmi->variant->set_timings(vc4_hdmi, conn_state, mode);
+ mutex_unlock(&vc4_hdmi->mutex);
+
return;
err_disable_pixel_clock:
clk_disable_unprepare(vc4_hdmi->pixel_clock);
err_put_runtime_pm:
pm_runtime_put(&vc4_hdmi->pdev->dev);
-
+out:
+ mutex_unlock(&vc4_hdmi->mutex);
return;
}
struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
unsigned long flags;
+ mutex_lock(&vc4_hdmi->mutex);
+
if (vc4_encoder->hdmi_monitor &&
drm_default_rgb_quant_range(mode) == HDMI_QUANTIZATION_RANGE_LIMITED) {
if (vc4_hdmi->variant->csc_setup)
spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
HDMI_WRITE(HDMI_FIFO_CTL, VC4_HDMI_FIFO_CTL_MASTER_SLAVE_N);
spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+
+ mutex_unlock(&vc4_hdmi->mutex);
}
static void vc4_hdmi_encoder_post_crtc_enable(struct drm_encoder *encoder,
unsigned long flags;
int ret;
+ mutex_lock(&vc4_hdmi->mutex);
+
spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
HDMI_WRITE(HDMI_VID_CTL,
vc4_hdmi_recenter_fifo(vc4_hdmi);
vc4_hdmi_enable_scrambling(encoder);
+
+ mutex_unlock(&vc4_hdmi->mutex);
}
static void vc4_hdmi_encoder_enable(struct drm_encoder *encoder)
u32 n, cts;
u64 tmp;
+ lockdep_assert_held(&vc4_hdmi->mutex);
lockdep_assert_held(&vc4_hdmi->hw_lock);
n = 128 * samplerate / 1000;
struct drm_encoder *encoder = &vc4_hdmi->encoder.base.base;
unsigned long flags;
+ mutex_lock(&vc4_hdmi->mutex);
+
/*
* If the HDMI encoder hasn't probed, or the encoder is
* currently in DVI mode, treat the codec dai as missing.
*/
if (!encoder->crtc || !(HDMI_READ(HDMI_RAM_PACKET_CONFIG) &
- VC4_HDMI_RAM_PACKET_ENABLE))
+ VC4_HDMI_RAM_PACKET_ENABLE)) {
+ mutex_unlock(&vc4_hdmi->mutex);
return -ENODEV;
+ }
vc4_hdmi->audio.streaming = true;
if (vc4_hdmi->variant->phy_rng_enable)
vc4_hdmi->variant->phy_rng_enable(vc4_hdmi);
+ mutex_unlock(&vc4_hdmi->mutex);
+
return 0;
}
unsigned long flags;
int ret;
+ lockdep_assert_held(&vc4_hdmi->mutex);
+
vc4_hdmi->audio.streaming = false;
ret = vc4_hdmi_stop_packet(encoder, HDMI_INFOFRAME_TYPE_AUDIO, false);
if (ret)
struct vc4_hdmi *vc4_hdmi = dev_get_drvdata(dev);
unsigned long flags;
+ mutex_lock(&vc4_hdmi->mutex);
+
spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
HDMI_WRITE(HDMI_MAI_CTL,
vc4_hdmi->audio.streaming = false;
vc4_hdmi_audio_reset(vc4_hdmi);
+
+ mutex_unlock(&vc4_hdmi->mutex);
}
static int sample_rate_to_mai_fmt(int samplerate)
dev_dbg(dev, "%s: %u Hz, %d bit, %d channels\n", __func__,
sample_rate, params->sample_width, channels);
+ mutex_lock(&vc4_hdmi->mutex);
+
vc4_hdmi_audio_set_mai_clock(vc4_hdmi, sample_rate);
spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
memcpy(&vc4_hdmi->audio.infoframe, ¶ms->cea, sizeof(params->cea));
vc4_hdmi_set_audio_infoframe(encoder);
+ mutex_unlock(&vc4_hdmi->mutex);
+
return 0;
}
struct vc4_hdmi *vc4_hdmi = dev_get_drvdata(dev);
struct drm_connector *connector = &vc4_hdmi->connector;
+ mutex_lock(&vc4_hdmi->mutex);
memcpy(buf, connector->eld, min(sizeof(connector->eld), len));
+ mutex_unlock(&vc4_hdmi->mutex);
return 0;
}
u32 val;
int ret;
+ /*
+ * NOTE: This function should really take vc4_hdmi->mutex, but doing so
+ * results in a reentrancy since cec_s_phys_addr_from_edid() called in
+ * .detect or .get_modes might call .adap_enable, which leads to this
+ * function being called with that mutex held.
+ *
+ * Concurrency is not an issue for the moment since we don't share any
+ * state with KMS, so we can ignore the lock for now, but we need to
+ * keep it in mind if we were to change that assumption.
+ */
+
ret = pm_runtime_resume_and_get(&vc4_hdmi->pdev->dev);
if (ret)
return ret;
struct vc4_hdmi *vc4_hdmi = cec_get_drvdata(adap);
unsigned long flags;
+ /*
+ * NOTE: This function should really take vc4_hdmi->mutex, but doing so
+ * results in a reentrancy since cec_s_phys_addr_from_edid() called in
+ * .detect or .get_modes might call .adap_enable, which leads to this
+ * function being called with that mutex held.
+ *
+ * Concurrency is not an issue for the moment since we don't share any
+ * state with KMS, so we can ignore the lock for now, but we need to
+ * keep it in mind if we were to change that assumption.
+ */
+
spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
if (!vc4_hdmi->variant->external_irq_controller)
struct vc4_hdmi *vc4_hdmi = cec_get_drvdata(adap);
unsigned long flags;
+ /*
+ * NOTE: This function should really take vc4_hdmi->mutex, but doing so
+ * results in a reentrancy since cec_s_phys_addr_from_edid() called in
+ * .detect or .get_modes might call .adap_enable, which leads to this
+ * function being called with that mutex held.
+ *
+ * Concurrency is not an issue for the moment since we don't share any
+ * state with KMS, so we can ignore the lock for now, but we need to
+ * keep it in mind if we were to change that assumption.
+ */
+
spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
HDMI_WRITE(HDMI_CEC_CNTRL_1,
(HDMI_READ(HDMI_CEC_CNTRL_1) & ~VC4_HDMI_CEC_ADDR_MASK) |
u32 val;
unsigned int i;
+ /*
+ * NOTE: This function should really take vc4_hdmi->mutex, but doing so
+ * results in a reentrancy since cec_s_phys_addr_from_edid() called in
+ * .detect or .get_modes might call .adap_enable, which leads to this
+ * function being called with that mutex held.
+ *
+ * Concurrency is not an issue for the moment since we don't share any
+ * state with KMS, so we can ignore the lock for now, but we need to
+ * keep it in mind if we were to change that assumption.
+ */
+
if (msg->len > 16) {
drm_err(dev, "Attempting to transmit too much data (%d)\n", msg->len);
return -ENOMEM;
vc4_hdmi = devm_kzalloc(dev, sizeof(*vc4_hdmi), GFP_KERNEL);
if (!vc4_hdmi)
return -ENOMEM;
+ mutex_init(&vc4_hdmi->mutex);
spin_lock_init(&vc4_hdmi->hw_lock);
INIT_DELAYED_WORK(&vc4_hdmi->scrambling_work, vc4_hdmi_scrambling_wq);
projects / platform / kernel / linux-rpi.git / blobdiff