pm_runtime_disable(&hdev->dev);
}
-#ifdef CONFIG_PM
-static int hdmi_codec_prepare(struct device *dev)
-{
- struct hdac_device *hdev = dev_to_hdac_dev(dev);
-
- pm_runtime_get_sync(&hdev->dev);
-
- /*
- * Power down afg.
- * codec_read is preferred over codec_write to set the power state.
- * This way verb is send to set the power state and response
- * is received. So setting power state is ensured without using loop
- * to read the state.
- */
- snd_hdac_codec_read(hdev, hdev->afg, 0, AC_VERB_SET_POWER_STATE,
- AC_PWRST_D3);
-
- return 0;
-}
-
-static void hdmi_codec_complete(struct device *dev)
+#ifdef CONFIG_PM_SLEEP
+static int hdmi_codec_resume(struct device *dev)
{
struct hdac_device *hdev = dev_to_hdac_dev(dev);
struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
+ int ret;
- /* Power up afg */
- snd_hdac_codec_read(hdev, hdev->afg, 0, AC_VERB_SET_POWER_STATE,
- AC_PWRST_D0);
-
- hdac_hdmi_skl_enable_all_pins(hdev);
- hdac_hdmi_skl_enable_dp12(hdev);
-
+ ret = pm_runtime_force_resume(dev);
+ if (ret < 0)
+ return ret;
/*
* As the ELD notify callback request is not entertained while the
* device is in suspend state. Need to manually check detection of
* all pins here. pin capablity change is not support, so use the
* already set pin caps.
+ *
+ * NOTE: this is safe to call even if the codec doesn't actually resume.
+ * The pin check involves only with DRM audio component hooks, so it
+ * works even if the HD-audio side is still dreaming peacefully.
*/
hdac_hdmi_present_sense_all_pins(hdev, hdmi, false);
-
- pm_runtime_put_sync(&hdev->dev);
+ return 0;
}
#else
-#define hdmi_codec_prepare NULL
-#define hdmi_codec_complete NULL
+#define hdmi_codec_resume NULL
#endif
static const struct snd_soc_component_driver hdmi_hda_codec = {
}
#ifdef CONFIG_PM
-/*
- * Power management sequences
- * ==========================
- *
- * The following explains the PM handling of HDAC HDMI with its parent
- * device SKL and display power usage
- *
- * Probe
- * -----
- * In SKL probe,
- * 1. skl_probe_work() powers up the display (refcount++ -> 1)
- * 2. enumerates the codecs on the link
- * 3. powers down the display (refcount-- -> 0)
- *
- * In HDAC HDMI probe,
- * 1. hdac_hdmi_dev_probe() powers up the display (refcount++ -> 1)
- * 2. probe the codec
- * 3. put the HDAC HDMI device to runtime suspend
- * 4. hdac_hdmi_runtime_suspend() powers down the display (refcount-- -> 0)
- *
- * Once children are runtime suspended, SKL device also goes to runtime
- * suspend
- *
- * HDMI Playback
- * -------------
- * Open HDMI device,
- * 1. skl_runtime_resume() invoked
- * 2. hdac_hdmi_runtime_resume() powers up the display (refcount++ -> 1)
- *
- * Close HDMI device,
- * 1. hdac_hdmi_runtime_suspend() powers down the display (refcount-- -> 0)
- * 2. skl_runtime_suspend() invoked
- *
- * S0/S3 Cycle with playback in progress
- * -------------------------------------
- * When the device is opened for playback, the device is runtime active
- * already and the display refcount is 1 as explained above.
- *
- * Entering to S3,
- * 1. hdmi_codec_prepare() invoke the runtime resume of codec which just
- * increments the PM runtime usage count of the codec since the device
- * is in use already
- * 2. skl_suspend() powers down the display (refcount-- -> 0)
- *
- * Wakeup from S3,
- * 1. skl_resume() powers up the display (refcount++ -> 1)
- * 2. hdmi_codec_complete() invokes the runtime suspend of codec which just
- * decrements the PM runtime usage count of the codec since the device
- * is in use already
- *
- * Once playback is stopped, the display refcount is set to 0 as explained
- * above in the HDMI playback sequence. The PM handlings are designed in
- * such way that to balance the refcount of display power when the codec
- * device put to S3 while playback is going on.
- *
- * S0/S3 Cycle without playback in progress
- * ----------------------------------------
- * Entering to S3,
- * 1. hdmi_codec_prepare() invoke the runtime resume of codec
- * 2. skl_runtime_resume() invoked
- * 3. hdac_hdmi_runtime_resume() powers up the display (refcount++ -> 1)
- * 4. skl_suspend() powers down the display (refcount-- -> 0)
- *
- * Wakeup from S3,
- * 1. skl_resume() powers up the display (refcount++ -> 1)
- * 2. hdmi_codec_complete() invokes the runtime suspend of codec
- * 3. hdac_hdmi_runtime_suspend() powers down the display (refcount-- -> 0)
- * 4. skl_runtime_suspend() invoked
- */
static int hdac_hdmi_runtime_suspend(struct device *dev)
{
struct hdac_device *hdev = dev_to_hdac_dev(dev);
static const struct dev_pm_ops hdac_hdmi_pm = {
SET_RUNTIME_PM_OPS(hdac_hdmi_runtime_suspend, hdac_hdmi_runtime_resume, NULL)
- .prepare = hdmi_codec_prepare,
- .complete = hdmi_codec_complete,
+ SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, hdmi_codec_resume)
};
static const struct hda_device_id hdmi_list[] = {
skl->skl_sst->fw_loaded = false;
}
- if (IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI))
- snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, false);
-
return 0;
}
struct hdac_ext_link *hlink = NULL;
int ret;
- /* Turned OFF in HDMI codec driver after codec reconfiguration */
- if (IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI))
- snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, true);
-
/*
* resume only when we are not in suspend active, otherwise need to
* restore the device
snd_hdac_ext_bus_exit(bus);
cancel_work_sync(&skl->probe_work);
- if (IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI))
+ if (IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI)) {
+ snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, false);
snd_hdac_i915_exit(bus);
+ }
return 0;
}
err = skl_platform_register(bus->dev);
if (err < 0) {
dev_err(bus->dev, "platform register failed: %d\n", err);
- return;
+ goto out_err;
}
err = skl_machine_device_register(skl);
projects / users / jedix / linux-maple.git / commitdiff