In order to include monitor name information in debugfs output we needed to add a function that would extract the monitor name from the EDID, and that function needed to reside in the file where the rest of the EDID helper functions are implemented.
v2: Refactor to have drm_edid_get_monitor_name() and drm_edid_to_eld() use a common helper function to extract the monitor name from the edid. [Jani] + rebase.
v3: Minor changes suggested by Jani + rebase.
cc: dri-devel@lists.freedesktop.org cc: Jani Nikula jani.nikula@linux.intel.com Signed-off-by: Jim Bride jim.bride@linux.intel.com --- drivers/gpu/drm/drm_edid.c | 51 ++++++++++++++++++++++++++++++++++++++-------- include/drm/drm_crtc.h | 2 ++ 2 files changed, 44 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 558ef9f..da30ce3 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -3293,6 +3293,46 @@ monitor_name(struct detailed_timing *t, void *data) *(u8 **)data = t->data.other_data.data.str.str; }
+static int get_monitor_name(struct edid *edid, char name[13]) +{ + char *edid_name = NULL; + int mnl; + + if (!edid || !name) + return 0; + + drm_for_each_detailed_block((u8 *)edid, monitor_name, &edid_name); + for (mnl = 0; edid_name && mnl < 13; mnl++) { + if (edid_name[mnl] == 0x0a) + break; + + name[mnl] = edid_name[mnl]; + } + + return mnl; +} + +/** + * drm_edid_get_monitor_name - fetch the monitor name from the edid + * @edid: monitor EDID information + * @name: pointer to a character array to hold the name of the monitor + * @bufsize: The size of the name buffer (should be at least 13 chars.) + * + */ +void drm_edid_get_monitor_name(struct edid *edid, char *name, int bufsize) +{ + int name_length = -1; + char buf[13]; + + if (bufsize <= 0) + return; + + name_length = min(get_monitor_name(edid, buf), bufsize - 1); + memcpy(name, buf, name_length); + name[name_length] = '\0'; +} +EXPORT_SYMBOL(drm_edid_get_monitor_name); + /** * drm_edid_to_eld - build ELD from EDID * @connector: connector corresponding to the HDMI/DP sink @@ -3306,7 +3346,6 @@ void drm_edid_to_eld(struct drm_connector *connector, struct edid *edid) { uint8_t *eld = connector->eld; u8 *cea; - u8 *name; u8 *db; int total_sad_count = 0; int mnl; @@ -3320,14 +3359,8 @@ void drm_edid_to_eld(struct drm_connector *connector, struct edid *edid) return; }
- name = NULL; - drm_for_each_detailed_block((u8 *)edid, monitor_name, &name); - /* max: 13 bytes EDID, 16 bytes ELD */ - for (mnl = 0; name && mnl < 13; mnl++) { - if (name[mnl] == 0x0a) - break; - eld[20 + mnl] = name[mnl]; - } + mnl = get_monitor_name(edid, eld + 20); + eld[4] = (cea[1] << 5) | mnl; DRM_DEBUG_KMS("ELD monitor %s\n", eld + 20);
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index 8cb377c..6d46842 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -2500,6 +2500,8 @@ extern int drm_edid_header_is_valid(const u8 *raw_edid); extern bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid, bool *edid_corrupt); extern bool drm_edid_is_valid(struct edid *edid); +extern void drm_edid_get_monitor_name(struct edid *edid, char *name, + int buflen);
extern struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev, char topology[8]);
Add some additional information (input vs. output port, sink associated with VC, peer device type, max number of VCs supported) and ensure that any embedded '\0' characters in a branch device's devid string are not written to debugfs.
v2: Rebase + change drm_edid_get_monitor_name() call to reflect new signature.
v3: Minor changes suggested by Jani + rebase.
cc: dri-devel@lists.freedesktop.org cc: Jani Nikula jani.nikula@linux.intel.com Signed-off-by: Jim Bride jim.bride@linux.intel.com --- drivers/gpu/drm/drm_dp_mst_topology.c | 29 ++++++++++++++++++++++++----- 1 file changed, 24 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index 27fbd79..06d8b0a 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -2729,7 +2729,7 @@ static void drm_dp_mst_dump_mstb(struct seq_file *m,
seq_printf(m, "%smst: %p, %d\n", prefix, mstb, mstb->num_ports); list_for_each_entry(port, &mstb->ports, next) { - seq_printf(m, "%sport: %d: ddps: %d ldps: %d, sdp: %d/%d, %p, conn: %p\n", prefix, port->port_num, port->ddps, port->ldps, port->num_sdp_streams, port->num_sdp_stream_sinks, port, port->connector); + seq_printf(m, "%sport: %d: input: %d: pdt: %d, ddps: %d ldps: %d, sdp: %d/%d, %p, conn: %p\n", prefix, port->port_num, port->input, port->pdt, port->ddps, port->ldps, port->num_sdp_streams, port->num_sdp_stream_sinks, port, port->connector); if (port->mstb) drm_dp_mst_dump_mstb(m, port->mstb); } @@ -2750,6 +2750,16 @@ static bool dump_dp_payload_table(struct drm_dp_mst_topology_mgr *mgr, return false; }
+static void fetch_monitor_name(struct drm_dp_mst_topology_mgr *mgr, + struct drm_dp_mst_port *port, char *name, + int namelen) +{ + struct edid *mst_edid; + + mst_edid = drm_dp_mst_get_edid(port->connector, mgr, port); + drm_edid_get_monitor_name(mst_edid, name, namelen); +} + /** * drm_dp_mst_dump_topology(): dump topology to seq file. * @m: seq_file to dump output to @@ -2762,6 +2772,7 @@ void drm_dp_mst_dump_topology(struct seq_file *m, { int i; struct drm_dp_mst_port *port; + mutex_lock(&mgr->lock); if (mgr->mst_primary) drm_dp_mst_dump_mstb(m, mgr->mst_primary); @@ -2770,14 +2781,21 @@ void drm_dp_mst_dump_topology(struct seq_file *m, mutex_unlock(&mgr->lock);
mutex_lock(&mgr->payload_lock); - seq_printf(m, "vcpi: %lx %lx\n", mgr->payload_mask, mgr->vcpi_mask); + seq_printf(m, "vcpi: %lx %lx %d\n", mgr->payload_mask, mgr->vcpi_mask, + mgr->max_payloads);
for (i = 0; i < mgr->max_payloads; i++) { if (mgr->proposed_vcpis[i]) { + char name[14]; + port = container_of(mgr->proposed_vcpis[i], struct drm_dp_mst_port, vcpi); - seq_printf(m, "vcpi %d: %d %d %d\n", i, port->port_num, port->vcpi.vcpi, port->vcpi.num_slots); + fetch_monitor_name(mgr, port, name, sizeof(name)); + seq_printf(m, "vcpi %d: %d %d %d sink name: %s\n", i, + port->port_num, port->vcpi.vcpi, + port->vcpi.num_slots, + (*name != 0) ? name : "Unknown"); } else - seq_printf(m, "vcpi %d:unsed\n", i); + seq_printf(m, "vcpi %d:unused\n", i); } for (i = 0; i < mgr->max_payloads; i++) { seq_printf(m, "payload %d: %d, %d, %d\n", @@ -2817,8 +2835,9 @@ void drm_dp_mst_dump_topology(struct seq_file *m, for (i = 0; i < 0x3; i++) seq_printf(m, "%02x", buf[i]); seq_printf(m, " devid: "); - for (i = 0x3; i < 0x8; i++) + for (i = 0x3; i < 0x8 && buf[i]; i++) seq_printf(m, "%c", buf[i]); + seq_printf(m, " revision: hw: %x.%x sw: %x.%x", buf[0x9] >> 4, buf[0x9] & 0xf, buf[0xa], buf[0xb]); seq_printf(m, "\n"); bret = dump_dp_payload_table(mgr, buf);
On Mon, 11 Apr 2016, Jim Bride jim.bride@linux.intel.com wrote:
Add some additional information (input vs. output port, sink associated with VC, peer device type, max number of VCs supported) and ensure that any embedded '\0' characters in a branch device's devid string are not written to debugfs.
v2: Rebase + change drm_edid_get_monitor_name() call to reflect new signature.
v3: Minor changes suggested by Jani + rebase.
cc: dri-devel@lists.freedesktop.org cc: Jani Nikula jani.nikula@linux.intel.com Signed-off-by: Jim Bride jim.bride@linux.intel.com
Reviewed-by: Jani Nikula jani.nikula@intel.com
drivers/gpu/drm/drm_dp_mst_topology.c | 29 ++++++++++++++++++++++++----- 1 file changed, 24 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index 27fbd79..06d8b0a 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -2729,7 +2729,7 @@ static void drm_dp_mst_dump_mstb(struct seq_file *m,
seq_printf(m, "%smst: %p, %d\n", prefix, mstb, mstb->num_ports); list_for_each_entry(port, &mstb->ports, next) {
seq_printf(m, "%sport: %d: ddps: %d ldps: %d, sdp: %d/%d, %p, conn: %p\n", prefix, port->port_num, port->ddps, port->ldps, port->num_sdp_streams, port->num_sdp_stream_sinks, port, port->connector);
seq_printf(m, "%sport: %d: input: %d: pdt: %d, ddps: %d ldps: %d, sdp: %d/%d, %p, conn: %p\n", prefix, port->port_num, port->input, port->pdt, port->ddps, port->ldps, port->num_sdp_streams, port->num_sdp_stream_sinks, port, port->connector);@@ -2750,6 +2750,16 @@ static bool dump_dp_payload_table(struct drm_dp_mst_topology_mgr *mgr, return false; }
+static void fetch_monitor_name(struct drm_dp_mst_topology_mgr *mgr,
struct drm_dp_mst_port *port, char *name,int namelen)+{
- struct edid *mst_edid;
- mst_edid = drm_dp_mst_get_edid(port->connector, mgr, port);
- drm_edid_get_monitor_name(mst_edid, name, namelen);
+}
/**
- drm_dp_mst_dump_topology(): dump topology to seq file.
- @m: seq_file to dump output to
@@ -2762,6 +2772,7 @@ void drm_dp_mst_dump_topology(struct seq_file *m, { int i; struct drm_dp_mst_port *port;
- mutex_lock(&mgr->lock); if (mgr->mst_primary) drm_dp_mst_dump_mstb(m, mgr->mst_primary);
@@ -2770,14 +2781,21 @@ void drm_dp_mst_dump_topology(struct seq_file *m, mutex_unlock(&mgr->lock);
mutex_lock(&mgr->payload_lock);
- seq_printf(m, "vcpi: %lx %lx\n", mgr->payload_mask, mgr->vcpi_mask);
seq_printf(m, "vcpi: %lx %lx %d\n", mgr->payload_mask, mgr->vcpi_mask,
mgr->max_payloads);for (i = 0; i < mgr->max_payloads; i++) { if (mgr->proposed_vcpis[i]) {
char name[14];port = container_of(mgr->proposed_vcpis[i], struct drm_dp_mst_port, vcpi);
seq_printf(m, "vcpi %d: %d %d %d\n", i, port->port_num, port->vcpi.vcpi, port->vcpi.num_slots);
fetch_monitor_name(mgr, port, name, sizeof(name));seq_printf(m, "vcpi %d: %d %d %d sink name: %s\n", i,port->port_num, port->vcpi.vcpi,port->vcpi.num_slots,(*name != 0) ? name : "Unknown");
seq_printf(m, "vcpi %d:unsed\n", i);
seq_printf(m, "vcpi %d:unused\n", i);@@ -2817,8 +2835,9 @@ void drm_dp_mst_dump_topology(struct seq_file *m, for (i = 0; i < 0x3; i++) seq_printf(m, "%02x", buf[i]); seq_printf(m, " devid: ");
for (i = 0x3; i < 0x8; i++)
for (i = 0x3; i < 0x8 && buf[i]; i++) seq_printf(m, "%c", buf[i]);- seq_printf(m, " revision: hw: %x.%x sw: %x.%x", buf[0x9] >> 4, buf[0x9] & 0xf, buf[0xa], buf[0xb]); seq_printf(m, "\n"); bret = dump_dp_payload_table(mgr, buf);
On Thu, Apr 14, 2016 at 09:47:22AM +0300, Jani Nikula wrote:
On Mon, 11 Apr 2016, Jim Bride jim.bride@linux.intel.com wrote:
Add some additional information (input vs. output port, sink associated with VC, peer device type, max number of VCs supported) and ensure that any embedded '\0' characters in a branch device's devid string are not written to debugfs.
v2: Rebase + change drm_edid_get_monitor_name() call to reflect new signature.
v3: Minor changes suggested by Jani + rebase.
cc: dri-devel@lists.freedesktop.org cc: Jani Nikula jani.nikula@linux.intel.com Signed-off-by: Jim Bride jim.bride@linux.intel.com
Reviewed-by: Jani Nikula jani.nikula@intel.com
Patch series seems a bit messed up here (I don't have a 3/3 here). Can you pls resend the entire pile, with nitpicks+reviewed-by and everything included, in a new thread?
Thanks, Daniel
drivers/gpu/drm/drm_dp_mst_topology.c | 29 ++++++++++++++++++++++++----- 1 file changed, 24 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index 27fbd79..06d8b0a 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -2729,7 +2729,7 @@ static void drm_dp_mst_dump_mstb(struct seq_file *m,
seq_printf(m, "%smst: %p, %d\n", prefix, mstb, mstb->num_ports); list_for_each_entry(port, &mstb->ports, next) {
seq_printf(m, "%sport: %d: ddps: %d ldps: %d, sdp: %d/%d, %p, conn: %p\n", prefix, port->port_num, port->ddps, port->ldps, port->num_sdp_streams, port->num_sdp_stream_sinks, port, port->connector);
seq_printf(m, "%sport: %d: input: %d: pdt: %d, ddps: %d ldps: %d, sdp: %d/%d, %p, conn: %p\n", prefix, port->port_num, port->input, port->pdt, port->ddps, port->ldps, port->num_sdp_streams, port->num_sdp_stream_sinks, port, port->connector);@@ -2750,6 +2750,16 @@ static bool dump_dp_payload_table(struct drm_dp_mst_topology_mgr *mgr, return false; }
+static void fetch_monitor_name(struct drm_dp_mst_topology_mgr *mgr,
struct drm_dp_mst_port *port, char *name,int namelen)+{
- struct edid *mst_edid;
- mst_edid = drm_dp_mst_get_edid(port->connector, mgr, port);
- drm_edid_get_monitor_name(mst_edid, name, namelen);
+}
/**
- drm_dp_mst_dump_topology(): dump topology to seq file.
- @m: seq_file to dump output to
@@ -2762,6 +2772,7 @@ void drm_dp_mst_dump_topology(struct seq_file *m, { int i; struct drm_dp_mst_port *port;
- mutex_lock(&mgr->lock); if (mgr->mst_primary) drm_dp_mst_dump_mstb(m, mgr->mst_primary);
@@ -2770,14 +2781,21 @@ void drm_dp_mst_dump_topology(struct seq_file *m, mutex_unlock(&mgr->lock);
mutex_lock(&mgr->payload_lock);
- seq_printf(m, "vcpi: %lx %lx\n", mgr->payload_mask, mgr->vcpi_mask);
seq_printf(m, "vcpi: %lx %lx %d\n", mgr->payload_mask, mgr->vcpi_mask,
mgr->max_payloads);for (i = 0; i < mgr->max_payloads; i++) { if (mgr->proposed_vcpis[i]) {
char name[14];port = container_of(mgr->proposed_vcpis[i], struct drm_dp_mst_port, vcpi);
seq_printf(m, "vcpi %d: %d %d %d\n", i, port->port_num, port->vcpi.vcpi, port->vcpi.num_slots);
fetch_monitor_name(mgr, port, name, sizeof(name));seq_printf(m, "vcpi %d: %d %d %d sink name: %s\n", i,port->port_num, port->vcpi.vcpi,port->vcpi.num_slots,(*name != 0) ? name : "Unknown");
seq_printf(m, "vcpi %d:unsed\n", i);
seq_printf(m, "vcpi %d:unused\n", i);@@ -2817,8 +2835,9 @@ void drm_dp_mst_dump_topology(struct seq_file *m, for (i = 0; i < 0x3; i++) seq_printf(m, "%02x", buf[i]); seq_printf(m, " devid: ");
for (i = 0x3; i < 0x8; i++)
for (i = 0x3; i < 0x8 && buf[i]; i++) seq_printf(m, "%c", buf[i]);- seq_printf(m, " revision: hw: %x.%x sw: %x.%x", buf[0x9] >> 4, buf[0x9] & 0xf, buf[0xa], buf[0xb]); seq_printf(m, "\n"); bret = dump_dp_payload_table(mgr, buf);
-- Jani Nikula, Intel Open Source Technology Center _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
On Mon, 11 Apr 2016, Jim Bride jim.bride@linux.intel.com wrote:
In order to include monitor name information in debugfs output we needed to add a function that would extract the monitor name from the EDID, and that function needed to reside in the file where the rest of the EDID helper functions are implemented.
v2: Refactor to have drm_edid_get_monitor_name() and drm_edid_to_eld() use a common helper function to extract the monitor name from the edid. [Jani] + rebase.
v3: Minor changes suggested by Jani + rebase.
cc: dri-devel@lists.freedesktop.org cc: Jani Nikula jani.nikula@linux.intel.com Signed-off-by: Jim Bride jim.bride@linux.intel.com
drivers/gpu/drm/drm_edid.c | 51 ++++++++++++++++++++++++++++++++++++++-------- include/drm/drm_crtc.h | 2 ++ 2 files changed, 44 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 558ef9f..da30ce3 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -3293,6 +3293,46 @@ monitor_name(struct detailed_timing *t, void *data) *(u8 **)data = t->data.other_data.data.str.str; }
+static int get_monitor_name(struct edid *edid, char name[13]) +{
- char *edid_name = NULL;
- int mnl;
- if (!edid || !name)
return 0;- drm_for_each_detailed_block((u8 *)edid, monitor_name, &edid_name);
- for (mnl = 0; edid_name && mnl < 13; mnl++) {
if (edid_name[mnl] == 0x0a)break;name[mnl] = edid_name[mnl];- }
- return mnl;
+}
+/**
- drm_edid_get_monitor_name - fetch the monitor name from the edid
- @edid: monitor EDID information
- @name: pointer to a character array to hold the name of the monitor
- @bufsize: The size of the name buffer (should be at least 13 chars.)
Nitpick, should be 13 + termination = 14 bytes.
- */
+void drm_edid_get_monitor_name(struct edid *edid, char *name, int bufsize) +{
- int name_length = -1;
Nitpick, no need to initialize.
Other than those,
Reviewed-by: Jani Nikula jani.nikula@intel.com
- char buf[13];
- if (bufsize <= 0)
return;- name_length = min(get_monitor_name(edid, buf), bufsize - 1);
- memcpy(name, buf, name_length);
- name[name_length] = '\0';
+} +EXPORT_SYMBOL(drm_edid_get_monitor_name);
/**
- drm_edid_to_eld - build ELD from EDID
- @connector: connector corresponding to the HDMI/DP sink
@@ -3306,7 +3346,6 @@ void drm_edid_to_eld(struct drm_connector *connector, struct edid *edid) { uint8_t *eld = connector->eld; u8 *cea;
- u8 *name; u8 *db; int total_sad_count = 0; int mnl;
@@ -3320,14 +3359,8 @@ void drm_edid_to_eld(struct drm_connector *connector, struct edid *edid) return; }
- name = NULL;
- drm_for_each_detailed_block((u8 *)edid, monitor_name, &name);
- /* max: 13 bytes EDID, 16 bytes ELD */
- for (mnl = 0; name && mnl < 13; mnl++) {
if (name[mnl] == 0x0a)break;eld[20 + mnl] = name[mnl];- }
- mnl = get_monitor_name(edid, eld + 20);
- eld[4] = (cea[1] << 5) | mnl; DRM_DEBUG_KMS("ELD monitor %s\n", eld + 20);
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index 8cb377c..6d46842 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -2500,6 +2500,8 @@ extern int drm_edid_header_is_valid(const u8 *raw_edid); extern bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid, bool *edid_corrupt); extern bool drm_edid_is_valid(struct edid *edid); +extern void drm_edid_get_monitor_name(struct edid *edid, char *name,
int buflen);extern struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev, char topology[8]);
dri-devel@lists.freedesktop.org
-
Daniel Vetter -
Jani Nikula -
Jim Bride