#define ELD_MAX_SIZE 256
#define ELD_FIXED_BYTES 20
+#define ELD_VER_CEA_861D 2
+#define ELD_VER_PARTIAL 31
+#define ELD_MAX_MNL 16
+
struct hdac_hdmi_cvt_params {
unsigned int channels_min;
unsigned int channels_max;
hda_nid_t mux_nids[HDA_MAX_CONNECTIONS];
struct hdac_hdmi_eld eld;
struct hdac_ext_device *edev;
- int repoll_count;
- struct delayed_work work;
struct mutex lock;
bool chmap_set;
unsigned char chmap[8]; /* ALSA API channel-map */
}
- /* HDMI ELD routines */
-static unsigned int hdac_hdmi_get_eld_data(struct hdac_device *codec,
- hda_nid_t nid, int byte_index)
-{
- unsigned int val;
-
- val = snd_hdac_codec_read(codec, nid, 0, AC_VERB_GET_HDMI_ELDD,
- byte_index);
-
- dev_dbg(&codec->dev, "HDMI: ELD data byte %d: 0x%x\n",
- byte_index, val);
-
- return val;
-}
-
-static int hdac_hdmi_get_eld_size(struct hdac_device *codec, hda_nid_t nid)
-{
- return snd_hdac_codec_read(codec, nid, 0, AC_VERB_GET_HDMI_DIP_SIZE,
- AC_DIPSIZE_ELD_BUF);
-}
-
-/*
- * This function queries the ELD size and ELD data and fills in the buffer
- * passed by user
- */
-static int hdac_hdmi_get_eld(struct hdac_device *codec, hda_nid_t nid,
- unsigned char *buf, int *eld_size)
-{
- int i, size, ret = 0;
-
- /*
- * ELD size is initialized to zero in caller function. If no errors and
- * ELD is valid, actual eld_size is assigned.
- */
-
- size = hdac_hdmi_get_eld_size(codec, nid);
- if (size < ELD_FIXED_BYTES || size > ELD_MAX_SIZE) {
- dev_err(&codec->dev, "HDMI: invalid ELD buf size %d\n", size);
- return -ERANGE;
- }
-
- /* set ELD buffer */
- for (i = 0; i < size; i++) {
- unsigned int val = hdac_hdmi_get_eld_data(codec, nid, i);
- /*
- * Graphics driver might be writing to ELD buffer right now.
- * Just abort. The caller will repoll after a while.
- */
- if (!(val & AC_ELDD_ELD_VALID)) {
- dev_err(&codec->dev,
- "HDMI: invalid ELD data byte %d\n", i);
- ret = -EINVAL;
- goto error;
- }
- val &= AC_ELDD_ELD_DATA;
- /*
- * The first byte cannot be zero. This can happen on some DVI
- * connections. Some Intel chips may also need some 250ms delay
- * to return non-zero ELD data, even when the graphics driver
- * correctly writes ELD content before setting ELD_valid bit.
- */
- if (!val && !i) {
- dev_err(&codec->dev, "HDMI: 0 ELD data\n");
- ret = -EINVAL;
- goto error;
- }
- buf[i] = val;
- }
-
- *eld_size = size;
-error:
- return ret;
-}
-
static int hdac_hdmi_setup_stream(struct hdac_ext_device *hdac,
hda_nid_t cvt_nid, hda_nid_t pin_nid,
u32 stream_tag, int format)
return hdac_hdmi_query_cvt_params(&edev->hdac, cvt);
}
-static void hdac_hdmi_parse_eld(struct hdac_ext_device *edev,
+static int hdac_hdmi_parse_eld(struct hdac_ext_device *edev,
struct hdac_hdmi_pin *pin)
{
+ unsigned int ver, mnl;
+
+ ver = (pin->eld.eld_buffer[DRM_ELD_VER] & DRM_ELD_VER_MASK)
+ >> DRM_ELD_VER_SHIFT;
+
+ if (ver != ELD_VER_CEA_861D && ver != ELD_VER_PARTIAL) {
+ dev_dbg(&edev->hdac.dev, "HDMI: Unknown ELD version %d\n", ver);
+ return -EINVAL;
+ }
+
+ mnl = (pin->eld.eld_buffer[DRM_ELD_CEA_EDID_VER_MNL] &
+ DRM_ELD_MNL_MASK) >> DRM_ELD_MNL_SHIFT;
+
+ if (mnl > ELD_MAX_MNL) {
+ dev_dbg(&edev->hdac.dev, "HDMI: MNL Invalid %d\n", mnl);
+ return -EINVAL;
+ }
+
pin->eld.info.spk_alloc = pin->eld.eld_buffer[DRM_ELD_SPEAKER];
+
+ return 0;
}
-static void hdac_hdmi_present_sense(struct hdac_hdmi_pin *pin, int repoll)
+static void hdac_hdmi_present_sense(struct hdac_hdmi_pin *pin)
{
struct hdac_ext_device *edev = pin->edev;
struct hdac_hdmi_priv *hdmi = edev->private_data;
struct hdac_hdmi_pcm *pcm;
- int val;
-
- pin->repoll_count = repoll;
+ int size;
- pm_runtime_get_sync(&edev->hdac.dev);
- val = snd_hdac_codec_read(&edev->hdac, pin->nid, 0,
- AC_VERB_GET_PIN_SENSE, 0);
+ mutex_lock(&hdmi->pin_mutex);
+ pin->eld.monitor_present = false;
- dev_dbg(&edev->hdac.dev, "Pin sense val %x for pin: %d\n",
- val, pin->nid);
+ size = snd_hdac_acomp_get_eld(&edev->hdac, pin->nid, -1,
+ &pin->eld.monitor_present, pin->eld.eld_buffer,
+ ELD_MAX_SIZE);
+ if (size > 0) {
+ size = min(size, ELD_MAX_SIZE);
+ if (hdac_hdmi_parse_eld(edev, pin) < 0)
+ size = -EINVAL;
+ }
- mutex_lock(&hdmi->pin_mutex);
- pin->eld.monitor_present = !!(val & AC_PINSENSE_PRESENCE);
- pin->eld.eld_valid = !!(val & AC_PINSENSE_ELDV);
+ if (size > 0) {
+ pin->eld.eld_valid = true;
+ pin->eld.eld_size = size;
+ } else {
+ pin->eld.eld_valid = false;
+ pin->eld.eld_size = 0;
+ }
pcm = hdac_hdmi_get_pcm(edev, pin);
}
mutex_unlock(&hdmi->pin_mutex);
- goto put_hdac_device;
+ return;
}
if (pin->eld.monitor_present && pin->eld.eld_valid) {
- /* TODO: use i915 component for reading ELD later */
- if (hdac_hdmi_get_eld(&edev->hdac, pin->nid,
- pin->eld.eld_buffer,
- &pin->eld.eld_size) == 0) {
-
- if (pcm) {
- dev_dbg(&edev->hdac.dev,
- "jack report for pcm=%d\n",
- pcm->pcm_id);
-
- snd_jack_report(pcm->jack, SND_JACK_AVOUT);
- }
- hdac_hdmi_parse_eld(edev, pin);
-
- print_hex_dump_debug("ELD: ",
- DUMP_PREFIX_OFFSET, 16, 1,
- pin->eld.eld_buffer, pin->eld.eld_size,
- true);
- } else {
- pin->eld.monitor_present = false;
- pin->eld.eld_valid = false;
-
- if (pcm) {
- dev_dbg(&edev->hdac.dev,
- "jack report for pcm=%d\n",
- pcm->pcm_id);
+ if (pcm) {
+ dev_dbg(&edev->hdac.dev,
+ "jack report for pcm=%d\n",
+ pcm->pcm_id);
- snd_jack_report(pcm->jack, 0);
- }
+ snd_jack_report(pcm->jack, SND_JACK_AVOUT);
}
+
+ print_hex_dump_debug("ELD: ", DUMP_PREFIX_OFFSET, 16, 1,
+ pin->eld.eld_buffer, pin->eld.eld_size, false);
}
mutex_unlock(&hdmi->pin_mutex);
-
- /*
- * Sometimes the pin_sense may present invalid monitor
- * present and eld_valid. If ELD data is not valid, loop few
- * more times to get correct pin sense and valid ELD.
- */
- if ((!pin->eld.monitor_present || !pin->eld.eld_valid) && repoll)
- schedule_delayed_work(&pin->work, msecs_to_jiffies(300));
-
-put_hdac_device:
- pm_runtime_put_sync(&edev->hdac.dev);
-}
-
-static void hdac_hdmi_repoll_eld(struct work_struct *work)
-{
- struct hdac_hdmi_pin *pin =
- container_of(to_delayed_work(work), struct hdac_hdmi_pin, work);
-
- /* picked from legacy HDA driver */
- if (pin->repoll_count++ > 6)
- pin->repoll_count = 0;
-
- hdac_hdmi_present_sense(pin, pin->repoll_count);
}
static int hdac_hdmi_add_pin(struct hdac_ext_device *edev, hda_nid_t nid)
pin->edev = edev;
mutex_init(&pin->lock);
- INIT_DELAYED_WORK(&pin->work, hdac_hdmi_repoll_eld);
return 0;
}
list_for_each_entry(pin, &hdmi->pin_list, head) {
if (pin->nid == pin_nid)
- hdac_hdmi_present_sense(pin, 1);
+ hdac_hdmi_present_sense(pin);
}
}
}
list_for_each_entry(pin, &hdmi->pin_list, head)
- hdac_hdmi_present_sense(pin, 1);
+ hdac_hdmi_present_sense(pin);
/* Imp: Store the card pointer in hda_codec */
edev->card = dapm->card->snd_card;
* all pins here.
*/
list_for_each_entry(pin, &hdmi->pin_list, head)
- hdac_hdmi_present_sense(pin, 1);
+ hdac_hdmi_present_sense(pin);
pm_runtime_put_sync(&edev->hdac.dev);
}
git.samba.org / sfrench / cifs-2.6.git / commitdiff