aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/video
diff options
context:
space:
mode:
authorDave Airlie <airlied@redhat.com>2018-11-19 00:40:00 (GMT)
committerDave Airlie <airlied@redhat.com>2018-11-19 00:40:33 (GMT)
commitd7563c55ef9fc1fd2301b8708b3c1f53509d6745 (patch)
treed7c8ba37972ecab71b056356366e136d5f2527ec /drivers/video
parent9ff01193a20d391e8dbce4403dd5ef87c7eaaca6 (diff)
parente7afb623b4fb82089c9a50c733c740522b8220bc (diff)
Merge tag 'drm-misc-next-2018-11-07' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
drm-misc-next for v4.21, part 1: UAPI Changes: - Add syncobj timeline support to drm. Cross-subsystem Changes: - Remove shared fence staging in dma-buf's fence object, and allow reserving more than 1 fence and add more paranoia when debugging. - Constify infoframe functions in video/hdmi. Core Changes: - Add vkms todo, and a lot of assorted doc fixes. - Drop transitional helpers and convert drivers to use drm_atomic_helper_shutdown(). - Move atomic state helper functions to drm_atomic_state_helper.[ch] - Refactor drm selftests, and add new tests. - DP MST atomic state cleanups. - Drop EXPORT_SYMBOL from drm leases. - Lease cleanups and fixes. - Create render node for vgem. Driver Changes: - Fix build failure in imx without fbdev emulation. - Add rotation quirk for GPD win2 panel. - Add support for various CDTech panels, Banana Pi Panel, DLC1010GIG, Olimex LCD-O-LinuXino, Samsung S6D16D0, Truly NT35597 WQXGA, Himax HX8357D, simulated RTSM AEMv8. - Add dw_hdmi support to rockchip driver. - Fix YUV support in vc4. - Fix resource id handling in virtio. - Make rockchip use dw-mipi-dsi bridge driver, and add dual dsi support. - Advertise that tinydrm only supports DRM_FORMAT_MOD_LINEAR. - Convert many drivers to use atomic helpers, and drm_fbdev_generic_setup(). - Add Mali linear tiled formats, and enable them in the Mali-DP driver. - Add support for H6 DE3 mixer 0, DW HDMI, HDMI PHY and TCON TOP. - Assorted driver cleanups and fixes. Signed-off-by: Dave Airlie <airlied@redhat.com> From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/be7ebd91-edd9-8fa4-4286-1c57e3165113@linux.intel.com
Diffstat (limited to 'drivers/video')
-rw-r--r--drivers/video/hdmi.c511
1 files changed, 454 insertions, 57 deletions
diff --git a/drivers/video/hdmi.c b/drivers/video/hdmi.c
index 8a3e8f6..799ae49 100644
--- a/drivers/video/hdmi.c
+++ b/drivers/video/hdmi.c
@@ -31,7 +31,7 @@
#define hdmi_log(fmt, ...) dev_printk(level, dev, fmt, ##__VA_ARGS__)
-static u8 hdmi_infoframe_checksum(u8 *ptr, size_t size)
+static u8 hdmi_infoframe_checksum(const u8 *ptr, size_t size)
{
u8 csum = 0;
size_t i;
@@ -68,8 +68,36 @@ int hdmi_avi_infoframe_init(struct hdmi_avi_infoframe *frame)
}
EXPORT_SYMBOL(hdmi_avi_infoframe_init);
+static int hdmi_avi_infoframe_check_only(const struct hdmi_avi_infoframe *frame)
+{
+ if (frame->type != HDMI_INFOFRAME_TYPE_AVI ||
+ frame->version != 2 ||
+ frame->length != HDMI_AVI_INFOFRAME_SIZE)
+ return -EINVAL;
+
+ if (frame->picture_aspect > HDMI_PICTURE_ASPECT_16_9)
+ return -EINVAL;
+
+ return 0;
+}
+
/**
- * hdmi_avi_infoframe_pack() - write HDMI AVI infoframe to binary buffer
+ * hdmi_avi_infoframe_check() - check a HDMI AVI infoframe
+ * @frame: HDMI AVI infoframe
+ *
+ * Validates that the infoframe is consistent and updates derived fields
+ * (eg. length) based on other fields.
+ *
+ * Returns 0 on success or a negative error code on failure.
+ */
+int hdmi_avi_infoframe_check(struct hdmi_avi_infoframe *frame)
+{
+ return hdmi_avi_infoframe_check_only(frame);
+}
+EXPORT_SYMBOL(hdmi_avi_infoframe_check);
+
+/**
+ * hdmi_avi_infoframe_pack_only() - write HDMI AVI infoframe to binary buffer
* @frame: HDMI AVI infoframe
* @buffer: destination buffer
* @size: size of buffer
@@ -82,20 +110,22 @@ EXPORT_SYMBOL(hdmi_avi_infoframe_init);
* Returns the number of bytes packed into the binary buffer or a negative
* error code on failure.
*/
-ssize_t hdmi_avi_infoframe_pack(struct hdmi_avi_infoframe *frame, void *buffer,
- size_t size)
+ssize_t hdmi_avi_infoframe_pack_only(const struct hdmi_avi_infoframe *frame,
+ void *buffer, size_t size)
{
u8 *ptr = buffer;
size_t length;
+ int ret;
+
+ ret = hdmi_avi_infoframe_check_only(frame);
+ if (ret)
+ return ret;
length = HDMI_INFOFRAME_HEADER_SIZE + frame->length;
if (size < length)
return -ENOSPC;
- if (frame->picture_aspect > HDMI_PICTURE_ASPECT_16_9)
- return -EINVAL;
-
memset(buffer, 0, size);
ptr[0] = frame->type;
@@ -152,6 +182,36 @@ ssize_t hdmi_avi_infoframe_pack(struct hdmi_avi_infoframe *frame, void *buffer,
return length;
}
+EXPORT_SYMBOL(hdmi_avi_infoframe_pack_only);
+
+/**
+ * hdmi_avi_infoframe_pack() - check a HDMI AVI infoframe,
+ * and write it to binary buffer
+ * @frame: HDMI AVI infoframe
+ * @buffer: destination buffer
+ * @size: size of buffer
+ *
+ * Validates that the infoframe is consistent and updates derived fields
+ * (eg. length) based on other fields, after which it packs the information
+ * contained in the @frame structure into a binary representation that
+ * can be written into the corresponding controller registers. This function
+ * also computes the checksum as required by section 5.3.5 of the HDMI 1.4
+ * specification.
+ *
+ * Returns the number of bytes packed into the binary buffer or a negative
+ * error code on failure.
+ */
+ssize_t hdmi_avi_infoframe_pack(struct hdmi_avi_infoframe *frame,
+ void *buffer, size_t size)
+{
+ int ret;
+
+ ret = hdmi_avi_infoframe_check(frame);
+ if (ret)
+ return ret;
+
+ return hdmi_avi_infoframe_pack_only(frame, buffer, size);
+}
EXPORT_SYMBOL(hdmi_avi_infoframe_pack);
/**
@@ -178,8 +238,33 @@ int hdmi_spd_infoframe_init(struct hdmi_spd_infoframe *frame,
}
EXPORT_SYMBOL(hdmi_spd_infoframe_init);
+static int hdmi_spd_infoframe_check_only(const struct hdmi_spd_infoframe *frame)
+{
+ if (frame->type != HDMI_INFOFRAME_TYPE_SPD ||
+ frame->version != 1 ||
+ frame->length != HDMI_SPD_INFOFRAME_SIZE)
+ return -EINVAL;
+
+ return 0;
+}
+
/**
- * hdmi_spd_infoframe_pack() - write HDMI SPD infoframe to binary buffer
+ * hdmi_spd_infoframe_check() - check a HDMI SPD infoframe
+ * @frame: HDMI SPD infoframe
+ *
+ * Validates that the infoframe is consistent and updates derived fields
+ * (eg. length) based on other fields.
+ *
+ * Returns 0 on success or a negative error code on failure.
+ */
+int hdmi_spd_infoframe_check(struct hdmi_spd_infoframe *frame)
+{
+ return hdmi_spd_infoframe_check_only(frame);
+}
+EXPORT_SYMBOL(hdmi_spd_infoframe_check);
+
+/**
+ * hdmi_spd_infoframe_pack_only() - write HDMI SPD infoframe to binary buffer
* @frame: HDMI SPD infoframe
* @buffer: destination buffer
* @size: size of buffer
@@ -192,11 +277,16 @@ EXPORT_SYMBOL(hdmi_spd_infoframe_init);
* Returns the number of bytes packed into the binary buffer or a negative
* error code on failure.
*/
-ssize_t hdmi_spd_infoframe_pack(struct hdmi_spd_infoframe *frame, void *buffer,
- size_t size)
+ssize_t hdmi_spd_infoframe_pack_only(const struct hdmi_spd_infoframe *frame,
+ void *buffer, size_t size)
{
u8 *ptr = buffer;
size_t length;
+ int ret;
+
+ ret = hdmi_spd_infoframe_check_only(frame);
+ if (ret)
+ return ret;
length = HDMI_INFOFRAME_HEADER_SIZE + frame->length;
@@ -222,6 +312,36 @@ ssize_t hdmi_spd_infoframe_pack(struct hdmi_spd_infoframe *frame, void *buffer,
return length;
}
+EXPORT_SYMBOL(hdmi_spd_infoframe_pack_only);
+
+/**
+ * hdmi_spd_infoframe_pack() - check a HDMI SPD infoframe,
+ * and write it to binary buffer
+ * @frame: HDMI SPD infoframe
+ * @buffer: destination buffer
+ * @size: size of buffer
+ *
+ * Validates that the infoframe is consistent and updates derived fields
+ * (eg. length) based on other fields, after which it packs the information
+ * contained in the @frame structure into a binary representation that
+ * can be written into the corresponding controller registers. This function
+ * also computes the checksum as required by section 5.3.5 of the HDMI 1.4
+ * specification.
+ *
+ * Returns the number of bytes packed into the binary buffer or a negative
+ * error code on failure.
+ */
+ssize_t hdmi_spd_infoframe_pack(struct hdmi_spd_infoframe *frame,
+ void *buffer, size_t size)
+{
+ int ret;
+
+ ret = hdmi_spd_infoframe_check(frame);
+ if (ret)
+ return ret;
+
+ return hdmi_spd_infoframe_pack_only(frame, buffer, size);
+}
EXPORT_SYMBOL(hdmi_spd_infoframe_pack);
/**
@@ -242,8 +362,33 @@ int hdmi_audio_infoframe_init(struct hdmi_audio_infoframe *frame)
}
EXPORT_SYMBOL(hdmi_audio_infoframe_init);
+static int hdmi_audio_infoframe_check_only(const struct hdmi_audio_infoframe *frame)
+{
+ if (frame->type != HDMI_INFOFRAME_TYPE_AUDIO ||
+ frame->version != 1 ||
+ frame->length != HDMI_AUDIO_INFOFRAME_SIZE)
+ return -EINVAL;
+
+ return 0;
+}
+
/**
- * hdmi_audio_infoframe_pack() - write HDMI audio infoframe to binary buffer
+ * hdmi_audio_infoframe_check() - check a HDMI audio infoframe
+ * @frame: HDMI audio infoframe
+ *
+ * Validates that the infoframe is consistent and updates derived fields
+ * (eg. length) based on other fields.
+ *
+ * Returns 0 on success or a negative error code on failure.
+ */
+int hdmi_audio_infoframe_check(struct hdmi_audio_infoframe *frame)
+{
+ return hdmi_audio_infoframe_check_only(frame);
+}
+EXPORT_SYMBOL(hdmi_audio_infoframe_check);
+
+/**
+ * hdmi_audio_infoframe_pack_only() - write HDMI audio infoframe to binary buffer
* @frame: HDMI audio infoframe
* @buffer: destination buffer
* @size: size of buffer
@@ -256,12 +401,17 @@ EXPORT_SYMBOL(hdmi_audio_infoframe_init);
* Returns the number of bytes packed into the binary buffer or a negative
* error code on failure.
*/
-ssize_t hdmi_audio_infoframe_pack(struct hdmi_audio_infoframe *frame,
- void *buffer, size_t size)
+ssize_t hdmi_audio_infoframe_pack_only(const struct hdmi_audio_infoframe *frame,
+ void *buffer, size_t size)
{
unsigned char channels;
u8 *ptr = buffer;
size_t length;
+ int ret;
+
+ ret = hdmi_audio_infoframe_check_only(frame);
+ if (ret)
+ return ret;
length = HDMI_INFOFRAME_HEADER_SIZE + frame->length;
@@ -297,6 +447,36 @@ ssize_t hdmi_audio_infoframe_pack(struct hdmi_audio_infoframe *frame,
return length;
}
+EXPORT_SYMBOL(hdmi_audio_infoframe_pack_only);
+
+/**
+ * hdmi_audio_infoframe_pack() - check a HDMI Audio infoframe,
+ * and write it to binary buffer
+ * @frame: HDMI Audio infoframe
+ * @buffer: destination buffer
+ * @size: size of buffer
+ *
+ * Validates that the infoframe is consistent and updates derived fields
+ * (eg. length) based on other fields, after which it packs the information
+ * contained in the @frame structure into a binary representation that
+ * can be written into the corresponding controller registers. This function
+ * also computes the checksum as required by section 5.3.5 of the HDMI 1.4
+ * specification.
+ *
+ * Returns the number of bytes packed into the binary buffer or a negative
+ * error code on failure.
+ */
+ssize_t hdmi_audio_infoframe_pack(struct hdmi_audio_infoframe *frame,
+ void *buffer, size_t size)
+{
+ int ret;
+
+ ret = hdmi_audio_infoframe_check(frame);
+ if (ret)
+ return ret;
+
+ return hdmi_audio_infoframe_pack_only(frame, buffer, size);
+}
EXPORT_SYMBOL(hdmi_audio_infoframe_pack);
/**
@@ -319,6 +499,7 @@ int hdmi_vendor_infoframe_init(struct hdmi_vendor_infoframe *frame)
* value
*/
frame->s3d_struct = HDMI_3D_STRUCTURE_INVALID;
+ frame->length = 4;
return 0;
}
@@ -335,8 +516,42 @@ static int hdmi_vendor_infoframe_length(const struct hdmi_vendor_infoframe *fram
return 4;
}
+static int hdmi_vendor_infoframe_check_only(const struct hdmi_vendor_infoframe *frame)
+{
+ if (frame->type != HDMI_INFOFRAME_TYPE_VENDOR ||
+ frame->version != 1 ||
+ frame->oui != HDMI_IEEE_OUI)
+ return -EINVAL;
+
+ /* only one of those can be supplied */
+ if (frame->vic != 0 && frame->s3d_struct != HDMI_3D_STRUCTURE_INVALID)
+ return -EINVAL;
+
+ if (frame->length != hdmi_vendor_infoframe_length(frame))
+ return -EINVAL;
+
+ return 0;
+}
+
+/**
+ * hdmi_vendor_infoframe_check() - check a HDMI vendor infoframe
+ * @frame: HDMI infoframe
+ *
+ * Validates that the infoframe is consistent and updates derived fields
+ * (eg. length) based on other fields.
+ *
+ * Returns 0 on success or a negative error code on failure.
+ */
+int hdmi_vendor_infoframe_check(struct hdmi_vendor_infoframe *frame)
+{
+ frame->length = hdmi_vendor_infoframe_length(frame);
+
+ return hdmi_vendor_infoframe_check_only(frame);
+}
+EXPORT_SYMBOL(hdmi_vendor_infoframe_check);
+
/**
- * hdmi_vendor_infoframe_pack() - write a HDMI vendor infoframe to binary buffer
+ * hdmi_vendor_infoframe_pack_only() - write a HDMI vendor infoframe to binary buffer
* @frame: HDMI infoframe
* @buffer: destination buffer
* @size: size of buffer
@@ -349,17 +564,16 @@ static int hdmi_vendor_infoframe_length(const struct hdmi_vendor_infoframe *fram
* Returns the number of bytes packed into the binary buffer or a negative
* error code on failure.
*/
-ssize_t hdmi_vendor_infoframe_pack(struct hdmi_vendor_infoframe *frame,
- void *buffer, size_t size)
+ssize_t hdmi_vendor_infoframe_pack_only(const struct hdmi_vendor_infoframe *frame,
+ void *buffer, size_t size)
{
u8 *ptr = buffer;
size_t length;
+ int ret;
- /* only one of those can be supplied */
- if (frame->vic != 0 && frame->s3d_struct != HDMI_3D_STRUCTURE_INVALID)
- return -EINVAL;
-
- frame->length = hdmi_vendor_infoframe_length(frame);
+ ret = hdmi_vendor_infoframe_check_only(frame);
+ if (ret)
+ return ret;
length = HDMI_INFOFRAME_HEADER_SIZE + frame->length;
@@ -394,24 +608,134 @@ ssize_t hdmi_vendor_infoframe_pack(struct hdmi_vendor_infoframe *frame,
return length;
}
+EXPORT_SYMBOL(hdmi_vendor_infoframe_pack_only);
+
+/**
+ * hdmi_vendor_infoframe_pack() - check a HDMI Vendor infoframe,
+ * and write it to binary buffer
+ * @frame: HDMI Vendor infoframe
+ * @buffer: destination buffer
+ * @size: size of buffer
+ *
+ * Validates that the infoframe is consistent and updates derived fields
+ * (eg. length) based on other fields, after which it packs the information
+ * contained in the @frame structure into a binary representation that
+ * can be written into the corresponding controller registers. This function
+ * also computes the checksum as required by section 5.3.5 of the HDMI 1.4
+ * specification.
+ *
+ * Returns the number of bytes packed into the binary buffer or a negative
+ * error code on failure.
+ */
+ssize_t hdmi_vendor_infoframe_pack(struct hdmi_vendor_infoframe *frame,
+ void *buffer, size_t size)
+{
+ int ret;
+
+ ret = hdmi_vendor_infoframe_check(frame);
+ if (ret)
+ return ret;
+
+ return hdmi_vendor_infoframe_pack_only(frame, buffer, size);
+}
EXPORT_SYMBOL(hdmi_vendor_infoframe_pack);
+static int
+hdmi_vendor_any_infoframe_check_only(const union hdmi_vendor_any_infoframe *frame)
+{
+ if (frame->any.type != HDMI_INFOFRAME_TYPE_VENDOR ||
+ frame->any.version != 1)
+ return -EINVAL;
+
+ return 0;
+}
+
+/*
+ * hdmi_vendor_any_infoframe_check() - check a vendor infoframe
+ */
+static int
+hdmi_vendor_any_infoframe_check(union hdmi_vendor_any_infoframe *frame)
+{
+ int ret;
+
+ ret = hdmi_vendor_any_infoframe_check_only(frame);
+ if (ret)
+ return ret;
+
+ /* we only know about HDMI vendor infoframes */
+ if (frame->any.oui != HDMI_IEEE_OUI)
+ return -EINVAL;
+
+ return hdmi_vendor_infoframe_check(&frame->hdmi);
+}
+
/*
- * hdmi_vendor_any_infoframe_pack() - write a vendor infoframe to binary buffer
+ * hdmi_vendor_any_infoframe_pack_only() - write a vendor infoframe to binary buffer
*/
static ssize_t
-hdmi_vendor_any_infoframe_pack(union hdmi_vendor_any_infoframe *frame,
- void *buffer, size_t size)
+hdmi_vendor_any_infoframe_pack_only(const union hdmi_vendor_any_infoframe *frame,
+ void *buffer, size_t size)
{
+ int ret;
+
+ ret = hdmi_vendor_any_infoframe_check_only(frame);
+ if (ret)
+ return ret;
+
/* we only know about HDMI vendor infoframes */
if (frame->any.oui != HDMI_IEEE_OUI)
return -EINVAL;
- return hdmi_vendor_infoframe_pack(&frame->hdmi, buffer, size);
+ return hdmi_vendor_infoframe_pack_only(&frame->hdmi, buffer, size);
+}
+
+/*
+ * hdmi_vendor_any_infoframe_pack() - check a vendor infoframe,
+ * and write it to binary buffer
+ */
+static ssize_t
+hdmi_vendor_any_infoframe_pack(union hdmi_vendor_any_infoframe *frame,
+ void *buffer, size_t size)
+{
+ int ret;
+
+ ret = hdmi_vendor_any_infoframe_check(frame);
+ if (ret)
+ return ret;
+
+ return hdmi_vendor_any_infoframe_pack_only(frame, buffer, size);
}
/**
- * hdmi_infoframe_pack() - write a HDMI infoframe to binary buffer
+ * hdmi_infoframe_check() - check a HDMI infoframe
+ * @frame: HDMI infoframe
+ *
+ * Validates that the infoframe is consistent and updates derived fields
+ * (eg. length) based on other fields.
+ *
+ * Returns 0 on success or a negative error code on failure.
+ */
+int
+hdmi_infoframe_check(union hdmi_infoframe *frame)
+{
+ switch (frame->any.type) {
+ case HDMI_INFOFRAME_TYPE_AVI:
+ return hdmi_avi_infoframe_check(&frame->avi);
+ case HDMI_INFOFRAME_TYPE_SPD:
+ return hdmi_spd_infoframe_check(&frame->spd);
+ case HDMI_INFOFRAME_TYPE_AUDIO:
+ return hdmi_audio_infoframe_check(&frame->audio);
+ case HDMI_INFOFRAME_TYPE_VENDOR:
+ return hdmi_vendor_any_infoframe_check(&frame->vendor);
+ default:
+ WARN(1, "Bad infoframe type %d\n", frame->any.type);
+ return -EINVAL;
+ }
+}
+EXPORT_SYMBOL(hdmi_infoframe_check);
+
+/**
+ * hdmi_infoframe_pack_only() - write a HDMI infoframe to binary buffer
* @frame: HDMI infoframe
* @buffer: destination buffer
* @size: size of buffer
@@ -425,7 +749,56 @@ hdmi_vendor_any_infoframe_pack(union hdmi_vendor_any_infoframe *frame,
* error code on failure.
*/
ssize_t
-hdmi_infoframe_pack(union hdmi_infoframe *frame, void *buffer, size_t size)
+hdmi_infoframe_pack_only(const union hdmi_infoframe *frame, void *buffer, size_t size)
+{
+ ssize_t length;
+
+ switch (frame->any.type) {
+ case HDMI_INFOFRAME_TYPE_AVI:
+ length = hdmi_avi_infoframe_pack_only(&frame->avi,
+ buffer, size);
+ break;
+ case HDMI_INFOFRAME_TYPE_SPD:
+ length = hdmi_spd_infoframe_pack_only(&frame->spd,
+ buffer, size);
+ break;
+ case HDMI_INFOFRAME_TYPE_AUDIO:
+ length = hdmi_audio_infoframe_pack_only(&frame->audio,
+ buffer, size);
+ break;
+ case HDMI_INFOFRAME_TYPE_VENDOR:
+ length = hdmi_vendor_any_infoframe_pack_only(&frame->vendor,
+ buffer, size);
+ break;
+ default:
+ WARN(1, "Bad infoframe type %d\n", frame->any.type);
+ length = -EINVAL;
+ }
+
+ return length;
+}
+EXPORT_SYMBOL(hdmi_infoframe_pack_only);
+
+/**
+ * hdmi_infoframe_pack() - check a HDMI infoframe,
+ * and write it to binary buffer
+ * @frame: HDMI infoframe
+ * @buffer: destination buffer
+ * @size: size of buffer
+ *
+ * Validates that the infoframe is consistent and updates derived fields
+ * (eg. length) based on other fields, after which it packs the information
+ * contained in the @frame structure into a binary representation that
+ * can be written into the corresponding controller registers. This function
+ * also computes the checksum as required by section 5.3.5 of the HDMI 1.4
+ * specification.
+ *
+ * Returns the number of bytes packed into the binary buffer or a negative
+ * error code on failure.
+ */
+ssize_t
+hdmi_infoframe_pack(union hdmi_infoframe *frame,
+ void *buffer, size_t size)
{
ssize_t length;
@@ -471,7 +844,7 @@ static const char *hdmi_infoframe_type_get_name(enum hdmi_infoframe_type type)
static void hdmi_infoframe_log_header(const char *level,
struct device *dev,
- struct hdmi_any_infoframe *frame)
+ const struct hdmi_any_infoframe *frame)
{
hdmi_log("HDMI infoframe: %s, version %u, length %u\n",
hdmi_infoframe_type_get_name(frame->type),
@@ -673,10 +1046,10 @@ hdmi_content_type_get_name(enum hdmi_content_type content_type)
*/
static void hdmi_avi_infoframe_log(const char *level,
struct device *dev,
- struct hdmi_avi_infoframe *frame)
+ const struct hdmi_avi_infoframe *frame)
{
hdmi_infoframe_log_header(level, dev,
- (struct hdmi_any_infoframe *)frame);
+ (const struct hdmi_any_infoframe *)frame);
hdmi_log(" colorspace: %s\n",
hdmi_colorspace_get_name(frame->colorspace));
@@ -750,12 +1123,12 @@ static const char *hdmi_spd_sdi_get_name(enum hdmi_spd_sdi sdi)
*/
static void hdmi_spd_infoframe_log(const char *level,
struct device *dev,
- struct hdmi_spd_infoframe *frame)
+ const struct hdmi_spd_infoframe *frame)
{
u8 buf[17];
hdmi_infoframe_log_header(level, dev,
- (struct hdmi_any_infoframe *)frame);
+ (const struct hdmi_any_infoframe *)frame);
memset(buf, 0, sizeof(buf));
@@ -886,10 +1259,10 @@ hdmi_audio_coding_type_ext_get_name(enum hdmi_audio_coding_type_ext ctx)
*/
static void hdmi_audio_infoframe_log(const char *level,
struct device *dev,
- struct hdmi_audio_infoframe *frame)
+ const struct hdmi_audio_infoframe *frame)
{
hdmi_infoframe_log_header(level, dev,
- (struct hdmi_any_infoframe *)frame);
+ (const struct hdmi_any_infoframe *)frame);
if (frame->channels)
hdmi_log(" channels: %u\n", frame->channels - 1);
@@ -949,12 +1322,12 @@ hdmi_3d_structure_get_name(enum hdmi_3d_structure s3d_struct)
static void
hdmi_vendor_any_infoframe_log(const char *level,
struct device *dev,
- union hdmi_vendor_any_infoframe *frame)
+ const union hdmi_vendor_any_infoframe *frame)
{
- struct hdmi_vendor_infoframe *hvf = &frame->hdmi;
+ const struct hdmi_vendor_infoframe *hvf = &frame->hdmi;
hdmi_infoframe_log_header(level, dev,
- (struct hdmi_any_infoframe *)frame);
+ (const struct hdmi_any_infoframe *)frame);
if (frame->any.oui != HDMI_IEEE_OUI) {
hdmi_log(" not a HDMI vendor infoframe\n");
@@ -984,7 +1357,7 @@ hdmi_vendor_any_infoframe_log(const char *level,
*/
void hdmi_infoframe_log(const char *level,
struct device *dev,
- union hdmi_infoframe *frame)
+ const union hdmi_infoframe *frame)
{
switch (frame->any.type) {
case HDMI_INFOFRAME_TYPE_AVI:
@@ -1005,8 +1378,9 @@ EXPORT_SYMBOL(hdmi_infoframe_log);
/**
* hdmi_avi_infoframe_unpack() - unpack binary buffer to a HDMI AVI infoframe
- * @buffer: source buffer
* @frame: HDMI AVI infoframe
+ * @buffer: source buffer
+ * @size: size of buffer
*
* Unpacks the information contained in binary @buffer into a structured
* @frame of the HDMI Auxiliary Video (AVI) information frame.
@@ -1016,11 +1390,14 @@ EXPORT_SYMBOL(hdmi_infoframe_log);
* Returns 0 on success or a negative error code on failure.
*/
static int hdmi_avi_infoframe_unpack(struct hdmi_avi_infoframe *frame,
- void *buffer)
+ const void *buffer, size_t size)
{
- u8 *ptr = buffer;
+ const u8 *ptr = buffer;
int ret;
+ if (size < HDMI_INFOFRAME_SIZE(AVI))
+ return -EINVAL;
+
if (ptr[0] != HDMI_INFOFRAME_TYPE_AVI ||
ptr[1] != 2 ||
ptr[2] != HDMI_AVI_INFOFRAME_SIZE)
@@ -1068,8 +1445,9 @@ static int hdmi_avi_infoframe_unpack(struct hdmi_avi_infoframe *frame,
/**
* hdmi_spd_infoframe_unpack() - unpack binary buffer to a HDMI SPD infoframe
- * @buffer: source buffer
* @frame: HDMI SPD infoframe
+ * @buffer: source buffer
+ * @size: size of buffer
*
* Unpacks the information contained in binary @buffer into a structured
* @frame of the HDMI Source Product Description (SPD) information frame.
@@ -1079,11 +1457,14 @@ static int hdmi_avi_infoframe_unpack(struct hdmi_avi_infoframe *frame,
* Returns 0 on success or a negative error code on failure.
*/
static int hdmi_spd_infoframe_unpack(struct hdmi_spd_infoframe *frame,
- void *buffer)
+ const void *buffer, size_t size)
{
- u8 *ptr = buffer;
+ const u8 *ptr = buffer;
int ret;
+ if (size < HDMI_INFOFRAME_SIZE(SPD))
+ return -EINVAL;
+
if (ptr[0] != HDMI_INFOFRAME_TYPE_SPD ||
ptr[1] != 1 ||
ptr[2] != HDMI_SPD_INFOFRAME_SIZE) {
@@ -1106,8 +1487,9 @@ static int hdmi_spd_infoframe_unpack(struct hdmi_spd_infoframe *frame,
/**
* hdmi_audio_infoframe_unpack() - unpack binary buffer to a HDMI AUDIO infoframe
- * @buffer: source buffer
* @frame: HDMI Audio infoframe
+ * @buffer: source buffer
+ * @size: size of buffer
*
* Unpacks the information contained in binary @buffer into a structured
* @frame of the HDMI Audio information frame.
@@ -1117,11 +1499,14 @@ static int hdmi_spd_infoframe_unpack(struct hdmi_spd_infoframe *frame,
* Returns 0 on success or a negative error code on failure.
*/
static int hdmi_audio_infoframe_unpack(struct hdmi_audio_infoframe *frame,
- void *buffer)
+ const void *buffer, size_t size)
{
- u8 *ptr = buffer;
+ const u8 *ptr = buffer;
int ret;
+ if (size < HDMI_INFOFRAME_SIZE(AUDIO))
+ return -EINVAL;
+
if (ptr[0] != HDMI_INFOFRAME_TYPE_AUDIO ||
ptr[1] != 1 ||
ptr[2] != HDMI_AUDIO_INFOFRAME_SIZE) {
@@ -1151,8 +1536,9 @@ static int hdmi_audio_infoframe_unpack(struct hdmi_audio_infoframe *frame,
/**
* hdmi_vendor_infoframe_unpack() - unpack binary buffer to a HDMI vendor infoframe
- * @buffer: source buffer
* @frame: HDMI Vendor infoframe
+ * @buffer: source buffer
+ * @size: size of buffer
*
* Unpacks the information contained in binary @buffer into a structured
* @frame of the HDMI Vendor information frame.
@@ -1163,14 +1549,17 @@ static int hdmi_audio_infoframe_unpack(struct hdmi_audio_infoframe *frame,
*/
static int
hdmi_vendor_any_infoframe_unpack(union hdmi_vendor_any_infoframe *frame,
- void *buffer)
+ const void *buffer, size_t size)
{
- u8 *ptr = buffer;
+ const u8 *ptr = buffer;
size_t length;
int ret;
u8 hdmi_video_format;
struct hdmi_vendor_infoframe *hvf = &frame->hdmi;
+ if (size < HDMI_INFOFRAME_HEADER_SIZE)
+ return -EINVAL;
+
if (ptr[0] != HDMI_INFOFRAME_TYPE_VENDOR ||
ptr[1] != 1 ||
(ptr[2] != 4 && ptr[2] != 5 && ptr[2] != 6))
@@ -1178,6 +1567,9 @@ hdmi_vendor_any_infoframe_unpack(union hdmi_vendor_any_infoframe *frame,
length = ptr[2];
+ if (size < HDMI_INFOFRAME_HEADER_SIZE + length)
+ return -EINVAL;
+
if (hdmi_infoframe_checksum(buffer,
HDMI_INFOFRAME_HEADER_SIZE + length) != 0)
return -EINVAL;
@@ -1224,8 +1616,9 @@ hdmi_vendor_any_infoframe_unpack(union hdmi_vendor_any_infoframe *frame,
/**
* hdmi_infoframe_unpack() - unpack binary buffer to a HDMI infoframe
- * @buffer: source buffer
* @frame: HDMI infoframe
+ * @buffer: source buffer
+ * @size: size of buffer
*
* Unpacks the information contained in binary buffer @buffer into a structured
* @frame of a HDMI infoframe.
@@ -1234,23 +1627,27 @@ hdmi_vendor_any_infoframe_unpack(union hdmi_vendor_any_infoframe *frame,
*
* Returns 0 on success or a negative error code on failure.
*/
-int hdmi_infoframe_unpack(union hdmi_infoframe *frame, void *buffer)
+int hdmi_infoframe_unpack(union hdmi_infoframe *frame,
+ const void *buffer, size_t size)
{
int ret;
- u8 *ptr = buffer;
+ const u8 *ptr = buffer;
+
+ if (size < HDMI_INFOFRAME_HEADER_SIZE)
+ return -EINVAL;
switch (ptr[0]) {
case HDMI_INFOFRAME_TYPE_AVI:
- ret = hdmi_avi_infoframe_unpack(&frame->avi, buffer);
+ ret = hdmi_avi_infoframe_unpack(&frame->avi, buffer, size);
break;
case HDMI_INFOFRAME_TYPE_SPD:
- ret = hdmi_spd_infoframe_unpack(&frame->spd, buffer);
+ ret = hdmi_spd_infoframe_unpack(&frame->spd, buffer, size);
break;
case HDMI_INFOFRAME_TYPE_AUDIO:
- ret = hdmi_audio_infoframe_unpack(&frame->audio, buffer);
+ ret = hdmi_audio_infoframe_unpack(&frame->audio, buffer, size);
break;
case HDMI_INFOFRAME_TYPE_VENDOR:
- ret = hdmi_vendor_any_infoframe_unpack(&frame->vendor, buffer);
+ ret = hdmi_vendor_any_infoframe_unpack(&frame->vendor, buffer, size);
break;
default:
ret = -EINVAL;

Privacy Policy