drm/msm: add HDMI debugfs support to show edid modes
Extend the HDMI debugfs interface to show the EDID modes and also the extracted information from various data blocks of the EDID. Change-Id: I7cb7dbea290ec822e994c79430c6c2dbb39abc33 Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
This commit is contained in:
Abhinav Kumar
parent
ae930851e9
commit
dc3681c17f
1 changed files with 392 additions and 1 deletions
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@ -85,16 +85,328 @@ static ssize_t _sde_hdmi_debugfs_dump_info_read(struct file *file,
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return len;
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}
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static ssize_t _sde_hdmi_debugfs_edid_modes_read(struct file *file,
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char __user *buff,
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size_t count,
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loff_t *ppos)
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{
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struct sde_hdmi *display = file->private_data;
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char *buf;
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u32 len = 0;
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struct drm_connector *connector;
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u32 mode_count = 0;
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struct drm_display_mode *mode;
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if (!display)
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return -ENODEV;
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if (!display->ctrl.ctrl ||
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!display->ctrl.ctrl->connector) {
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SDE_ERROR("sde_hdmi=%p or hdmi or connector is NULL\n",
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display);
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return -ENOMEM;
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}
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if (*ppos)
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return 0;
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connector = display->ctrl.ctrl->connector;
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list_for_each_entry(mode, &connector->modes, head) {
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mode_count++;
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}
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/* Adding one more to store title */
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mode_count++;
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buf = kzalloc((mode_count * sizeof(*mode)), GFP_KERNEL);
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if (!buf)
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return -ENOMEM;
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len += snprintf(buf + len, PAGE_SIZE - len,
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"name refresh (Hz) hdisp hss hse htot vdisp");
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len += snprintf(buf + len, PAGE_SIZE - len,
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" vss vse vtot flags\n");
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list_for_each_entry(mode, &connector->modes, head) {
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len += snprintf(buf + len, SZ_4K - len,
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"%s %d %d %d %d %d %d %d %d %d 0x%x\n",
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mode->name, mode->vrefresh, mode->hdisplay,
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mode->hsync_start, mode->hsync_end, mode->htotal,
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mode->vdisplay, mode->vsync_start, mode->vsync_end,
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mode->vtotal, mode->flags);
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}
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if (copy_to_user(buff, buf, len)) {
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kfree(buf);
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return -EFAULT;
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}
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*ppos += len;
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kfree(buf);
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return len;
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}
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static ssize_t _sde_hdmi_debugfs_edid_vsdb_info_read(struct file *file,
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char __user *buff,
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size_t count,
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loff_t *ppos)
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{
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struct sde_hdmi *display = file->private_data;
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char buf[200];
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u32 len = 0;
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struct drm_connector *connector;
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if (!display)
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return -ENODEV;
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if (!display->ctrl.ctrl ||
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!display->ctrl.ctrl->connector) {
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SDE_ERROR("sde_hdmi=%p or hdmi or connector is NULL\n",
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display);
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return -ENOMEM;
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}
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SDE_HDMI_DEBUG("%s +", __func__);
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if (*ppos)
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return 0;
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connector = display->ctrl.ctrl->connector;
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len += snprintf(buf + len, sizeof(buf) - len,
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"max_tmds_clock = %d\n",
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connector->max_tmds_clock);
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len += snprintf(buf + len, sizeof(buf) - len,
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"latency_present %d %d\n",
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connector->latency_present[0],
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connector->latency_present[1]);
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len += snprintf(buf + len, sizeof(buf) - len,
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"video_latency %d %d\n",
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connector->video_latency[0],
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connector->video_latency[1]);
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len += snprintf(buf + len, sizeof(buf) - len,
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"audio_latency %d %d\n",
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connector->audio_latency[0],
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connector->audio_latency[1]);
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len += snprintf(buf + len, sizeof(buf) - len,
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"dvi_dual %d\n",
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(int)connector->dvi_dual);
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if (copy_to_user(buff, buf, len))
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return -EFAULT;
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*ppos += len;
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SDE_HDMI_DEBUG("%s - ", __func__);
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return len;
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}
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static ssize_t _sde_hdmi_debugfs_edid_hdr_info_read(struct file *file,
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char __user *buff,
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size_t count,
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loff_t *ppos)
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{
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struct sde_hdmi *display = file->private_data;
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char buf[200];
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u32 len = 0;
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struct drm_connector *connector;
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if (!display)
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return -ENODEV;
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if (!display->ctrl.ctrl ||
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!display->ctrl.ctrl->connector) {
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SDE_ERROR("sde_hdmi=%p or hdmi or connector is NULL\n",
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display);
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return -ENOMEM;
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}
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SDE_HDMI_DEBUG("%s +", __func__);
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if (*ppos)
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return 0;
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connector = display->ctrl.ctrl->connector;
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len += snprintf(buf, sizeof(buf), "hdr_eotf = %d\n"
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"hdr_metadata_type_one %d\n"
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"hdr_max_luminance %d\n"
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"hdr_avg_luminance %d\n"
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"hdr_min_luminance %d\n"
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"hdr_supported %d\n",
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connector->hdr_eotf,
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connector->hdr_metadata_type_one,
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connector->hdr_max_luminance,
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connector->hdr_avg_luminance,
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connector->hdr_min_luminance,
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(int)connector->hdr_supported);
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if (copy_to_user(buff, buf, len))
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return -EFAULT;
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*ppos += len;
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SDE_HDMI_DEBUG("%s - ", __func__);
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return len;
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}
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static ssize_t _sde_hdmi_debugfs_edid_hfvsdb_info_read(struct file *file,
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char __user *buff,
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size_t count,
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loff_t *ppos)
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{
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struct sde_hdmi *display = file->private_data;
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char buf[200];
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u32 len = 0;
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struct drm_connector *connector;
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if (!display)
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return -ENODEV;
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if (!display->ctrl.ctrl ||
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!display->ctrl.ctrl->connector) {
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SDE_ERROR("sde_hdmi=%p or hdmi or connector is NULL\n",
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display);
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return -ENOMEM;
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}
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SDE_HDMI_DEBUG("%s +", __func__);
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if (*ppos)
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return 0;
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connector = display->ctrl.ctrl->connector;
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len += snprintf(buf, PAGE_SIZE - len, "max_tmds_char = %d\n"
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"scdc_present %d\n"
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"rr_capable %d\n"
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"supports_scramble %d\n"
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"flags_3d %d\n",
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connector->max_tmds_char,
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(int)connector->scdc_present,
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(int)connector->rr_capable,
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(int)connector->supports_scramble,
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connector->flags_3d);
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if (copy_to_user(buff, buf, len))
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return -EFAULT;
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*ppos += len;
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return len;
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}
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static ssize_t _sde_hdmi_debugfs_edid_vcdb_info_read(struct file *file,
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char __user *buff,
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size_t count,
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loff_t *ppos)
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{
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struct sde_hdmi *display = file->private_data;
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char buf[100];
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u32 len = 0;
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struct drm_connector *connector;
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if (!display)
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return -ENODEV;
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if (!display->ctrl.ctrl ||
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!display->ctrl.ctrl->connector) {
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SDE_ERROR("sde_hdmi=%p or hdmi or connector is NULL\n",
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display);
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return -ENOMEM;
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}
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SDE_HDMI_DEBUG("%s +", __func__);
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if (*ppos)
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return 0;
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connector = display->ctrl.ctrl->connector;
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len += snprintf(buf, PAGE_SIZE - len, "pt_scan_info = %d\n"
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"it_scan_info = %d\n"
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"ce_scan_info = %d\n",
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(int)connector->pt_scan_info,
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(int)connector->it_scan_info,
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(int)connector->ce_scan_info);
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if (copy_to_user(buff, buf, len))
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return -EFAULT;
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*ppos += len;
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SDE_HDMI_DEBUG("%s - ", __func__);
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return len;
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}
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static ssize_t _sde_hdmi_edid_vendor_name_read(struct file *file,
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char __user *buff,
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size_t count,
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loff_t *ppos)
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{
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struct sde_hdmi *display = file->private_data;
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char buf[100];
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u32 len = 0;
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struct drm_connector *connector;
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if (!display)
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return -ENODEV;
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if (!display->ctrl.ctrl ||
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!display->ctrl.ctrl->connector) {
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SDE_ERROR("sde_hdmi=%p or hdmi or connector is NULL\n",
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display);
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return -ENOMEM;
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}
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SDE_HDMI_DEBUG("%s +", __func__);
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if (*ppos)
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return 0;
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connector = display->ctrl.ctrl->connector;
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len += snprintf(buf, PAGE_SIZE - len, "Vendor ID is %s\n",
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display->edid_ctrl->vendor_id);
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if (copy_to_user(buff, buf, len))
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return -EFAULT;
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*ppos += len;
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SDE_HDMI_DEBUG("%s - ", __func__);
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return len;
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}
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static const struct file_operations dump_info_fops = {
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.open = simple_open,
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.read = _sde_hdmi_debugfs_dump_info_read,
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};
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static const struct file_operations edid_modes_fops = {
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.open = simple_open,
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.read = _sde_hdmi_debugfs_edid_modes_read,
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};
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static const struct file_operations edid_vsdb_info_fops = {
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.open = simple_open,
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.read = _sde_hdmi_debugfs_edid_vsdb_info_read,
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};
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static const struct file_operations edid_hdr_info_fops = {
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.open = simple_open,
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.read = _sde_hdmi_debugfs_edid_hdr_info_read,
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};
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static const struct file_operations edid_hfvsdb_info_fops = {
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.open = simple_open,
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.read = _sde_hdmi_debugfs_edid_hfvsdb_info_read,
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};
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static const struct file_operations edid_vcdb_info_fops = {
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.open = simple_open,
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.read = _sde_hdmi_debugfs_edid_vcdb_info_read,
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};
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static const struct file_operations edid_vendor_name_fops = {
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.open = simple_open,
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.read = _sde_hdmi_edid_vendor_name_read,
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};
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static int _sde_hdmi_debugfs_init(struct sde_hdmi *display)
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{
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int rc = 0;
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struct dentry *dir, *dump_file;
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struct dentry *dir, *dump_file, *edid_modes;
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struct dentry *edid_vsdb_info, *edid_hdr_info, *edid_hfvsdb_info;
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struct dentry *edid_vcdb_info, *edid_vendor_name;
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dir = debugfs_create_dir(display->name, NULL);
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if (!dir) {
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@ -116,6 +428,83 @@ static int _sde_hdmi_debugfs_init(struct sde_hdmi *display)
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goto error_remove_dir;
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}
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edid_modes = debugfs_create_file("edid_modes",
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0444,
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dir,
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display,
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&edid_modes_fops);
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if (IS_ERR_OR_NULL(edid_modes)) {
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rc = PTR_ERR(edid_modes);
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SDE_ERROR("[%s]debugfs create file failed, rc=%d\n",
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display->name, rc);
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goto error_remove_dir;
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}
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edid_vsdb_info = debugfs_create_file("edid_vsdb_info",
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0444,
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dir,
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display,
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&edid_vsdb_info_fops);
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if (IS_ERR_OR_NULL(edid_vsdb_info)) {
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rc = PTR_ERR(edid_vsdb_info);
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SDE_ERROR("[%s]debugfs create file failed, rc=%d\n",
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display->name, rc);
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goto error_remove_dir;
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}
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edid_hdr_info = debugfs_create_file("edid_hdr_info",
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0444,
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dir,
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display,
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&edid_hdr_info_fops);
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if (IS_ERR_OR_NULL(edid_hdr_info)) {
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rc = PTR_ERR(edid_hdr_info);
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SDE_ERROR("[%s]debugfs create file failed, rc=%d\n",
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display->name, rc);
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goto error_remove_dir;
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}
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edid_hfvsdb_info = debugfs_create_file("edid_hfvsdb_info",
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0444,
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dir,
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display,
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&edid_hfvsdb_info_fops);
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if (IS_ERR_OR_NULL(edid_hfvsdb_info)) {
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rc = PTR_ERR(edid_hfvsdb_info);
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SDE_ERROR("[%s]debugfs create file failed, rc=%d\n",
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display->name, rc);
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goto error_remove_dir;
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}
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edid_vcdb_info = debugfs_create_file("edid_vcdb_info",
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0444,
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dir,
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display,
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&edid_vcdb_info_fops);
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if (IS_ERR_OR_NULL(edid_vcdb_info)) {
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rc = PTR_ERR(edid_vcdb_info);
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SDE_ERROR("[%s]debugfs create file failed, rc=%d\n",
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display->name, rc);
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goto error_remove_dir;
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}
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edid_vendor_name = debugfs_create_file("edid_vendor_name",
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0444,
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dir,
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display,
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&edid_vendor_name_fops);
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if (IS_ERR_OR_NULL(edid_vendor_name)) {
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rc = PTR_ERR(edid_vendor_name);
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SDE_ERROR("[%s]debugfs create file failed, rc=%d\n",
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display->name, rc);
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goto error_remove_dir;
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}
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display->root = dir;
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return rc;
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error_remove_dir:
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@ -1193,6 +1582,8 @@ static int sde_hdmi_bind(struct device *dev, struct device *master, void *data)
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display_ctrl->ctrl = priv->hdmi;
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display->drm_dev = drm;
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mutex_unlock(&display->display_lock);
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return rc;
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error:
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(void)_sde_hdmi_debugfs_deinit(display);
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debug_error:
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