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authorLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
committerLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
commit5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch)
treecc5c2d0a898769fd59549594fedb3ee6f84e59a0 /drivers/gpu/drm/tests/drm_dp_mst_helper_test.c
downloadlinux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz
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Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted
Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ...
Diffstat (limited to 'drivers/gpu/drm/tests/drm_dp_mst_helper_test.c')
-rw-r--r--drivers/gpu/drm/tests/drm_dp_mst_helper_test.c431
1 files changed, 431 insertions, 0 deletions
diff --git a/drivers/gpu/drm/tests/drm_dp_mst_helper_test.c b/drivers/gpu/drm/tests/drm_dp_mst_helper_test.c
new file mode 100644
index 000000000..545beea33
--- /dev/null
+++ b/drivers/gpu/drm/tests/drm_dp_mst_helper_test.c
@@ -0,0 +1,431 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Test cases for the DRM DP MST helpers
+ *
+ * Copyright (c) 2022 MaĆ­ra Canal <mairacanal@riseup.net>
+ */
+
+#include <kunit/test.h>
+
+#include <drm/display/drm_dp_mst_helper.h>
+#include <drm/drm_print.h>
+
+#include "../display/drm_dp_mst_topology_internal.h"
+
+struct drm_dp_mst_calc_pbn_mode_test {
+ const int clock;
+ const int bpp;
+ const bool dsc;
+ const int expected;
+};
+
+static const struct drm_dp_mst_calc_pbn_mode_test drm_dp_mst_calc_pbn_mode_cases[] = {
+ {
+ .clock = 154000,
+ .bpp = 30,
+ .dsc = false,
+ .expected = 689
+ },
+ {
+ .clock = 234000,
+ .bpp = 30,
+ .dsc = false,
+ .expected = 1047
+ },
+ {
+ .clock = 297000,
+ .bpp = 24,
+ .dsc = false,
+ .expected = 1063
+ },
+ {
+ .clock = 332880,
+ .bpp = 24,
+ .dsc = true,
+ .expected = 50
+ },
+ {
+ .clock = 324540,
+ .bpp = 24,
+ .dsc = true,
+ .expected = 49
+ },
+};
+
+static void drm_test_dp_mst_calc_pbn_mode(struct kunit *test)
+{
+ const struct drm_dp_mst_calc_pbn_mode_test *params = test->param_value;
+
+ KUNIT_EXPECT_EQ(test, drm_dp_calc_pbn_mode(params->clock, params->bpp, params->dsc),
+ params->expected);
+}
+
+static void dp_mst_calc_pbn_mode_desc(const struct drm_dp_mst_calc_pbn_mode_test *t, char *desc)
+{
+ sprintf(desc, "Clock %d BPP %d DSC %s", t->clock, t->bpp, t->dsc ? "enabled" : "disabled");
+}
+
+KUNIT_ARRAY_PARAM(drm_dp_mst_calc_pbn_mode, drm_dp_mst_calc_pbn_mode_cases,
+ dp_mst_calc_pbn_mode_desc);
+
+static u8 data[] = { 0xff, 0x00, 0xdd };
+
+struct drm_dp_mst_sideband_msg_req_test {
+ const char *desc;
+ const struct drm_dp_sideband_msg_req_body in;
+};
+
+static const struct drm_dp_mst_sideband_msg_req_test drm_dp_mst_sideband_msg_req_cases[] = {
+ {
+ .desc = "DP_ENUM_PATH_RESOURCES with port number",
+ .in = {
+ .req_type = DP_ENUM_PATH_RESOURCES,
+ .u.port_num.port_number = 5,
+ },
+ },
+ {
+ .desc = "DP_POWER_UP_PHY with port number",
+ .in = {
+ .req_type = DP_POWER_UP_PHY,
+ .u.port_num.port_number = 5,
+ },
+ },
+ {
+ .desc = "DP_POWER_DOWN_PHY with port number",
+ .in = {
+ .req_type = DP_POWER_DOWN_PHY,
+ .u.port_num.port_number = 5,
+ },
+ },
+ {
+ .desc = "DP_ALLOCATE_PAYLOAD with SDP stream sinks",
+ .in = {
+ .req_type = DP_ALLOCATE_PAYLOAD,
+ .u.allocate_payload.number_sdp_streams = 3,
+ .u.allocate_payload.sdp_stream_sink = { 1, 2, 3 },
+ },
+ },
+ {
+ .desc = "DP_ALLOCATE_PAYLOAD with port number",
+ .in = {
+ .req_type = DP_ALLOCATE_PAYLOAD,
+ .u.allocate_payload.port_number = 0xf,
+ },
+ },
+ {
+ .desc = "DP_ALLOCATE_PAYLOAD with VCPI",
+ .in = {
+ .req_type = DP_ALLOCATE_PAYLOAD,
+ .u.allocate_payload.vcpi = 0x7f,
+ },
+ },
+ {
+ .desc = "DP_ALLOCATE_PAYLOAD with PBN",
+ .in = {
+ .req_type = DP_ALLOCATE_PAYLOAD,
+ .u.allocate_payload.pbn = U16_MAX,
+ },
+ },
+ {
+ .desc = "DP_QUERY_PAYLOAD with port number",
+ .in = {
+ .req_type = DP_QUERY_PAYLOAD,
+ .u.query_payload.port_number = 0xf,
+ },
+ },
+ {
+ .desc = "DP_QUERY_PAYLOAD with VCPI",
+ .in = {
+ .req_type = DP_QUERY_PAYLOAD,
+ .u.query_payload.vcpi = 0x7f,
+ },
+ },
+ {
+ .desc = "DP_REMOTE_DPCD_READ with port number",
+ .in = {
+ .req_type = DP_REMOTE_DPCD_READ,
+ .u.dpcd_read.port_number = 0xf,
+ },
+ },
+ {
+ .desc = "DP_REMOTE_DPCD_READ with DPCD address",
+ .in = {
+ .req_type = DP_REMOTE_DPCD_READ,
+ .u.dpcd_read.dpcd_address = 0xfedcb,
+ },
+ },
+ {
+ .desc = "DP_REMOTE_DPCD_READ with max number of bytes",
+ .in = {
+ .req_type = DP_REMOTE_DPCD_READ,
+ .u.dpcd_read.num_bytes = U8_MAX,
+ },
+ },
+ {
+ .desc = "DP_REMOTE_DPCD_WRITE with port number",
+ .in = {
+ .req_type = DP_REMOTE_DPCD_WRITE,
+ .u.dpcd_write.port_number = 0xf,
+ },
+ },
+ {
+ .desc = "DP_REMOTE_DPCD_WRITE with DPCD address",
+ .in = {
+ .req_type = DP_REMOTE_DPCD_WRITE,
+ .u.dpcd_write.dpcd_address = 0xfedcb,
+ },
+ },
+ {
+ .desc = "DP_REMOTE_DPCD_WRITE with data array",
+ .in = {
+ .req_type = DP_REMOTE_DPCD_WRITE,
+ .u.dpcd_write.num_bytes = ARRAY_SIZE(data),
+ .u.dpcd_write.bytes = data,
+ },
+ },
+ {
+ .desc = "DP_REMOTE_I2C_READ with port number",
+ .in = {
+ .req_type = DP_REMOTE_I2C_READ,
+ .u.i2c_read.port_number = 0xf,
+ },
+ },
+ {
+ .desc = "DP_REMOTE_I2C_READ with I2C device ID",
+ .in = {
+ .req_type = DP_REMOTE_I2C_READ,
+ .u.i2c_read.read_i2c_device_id = 0x7f,
+ },
+ },
+ {
+ .desc = "DP_REMOTE_I2C_READ with transactions array",
+ .in = {
+ .req_type = DP_REMOTE_I2C_READ,
+ .u.i2c_read.num_transactions = 3,
+ .u.i2c_read.num_bytes_read = ARRAY_SIZE(data) * 3,
+ .u.i2c_read.transactions = {
+ { .bytes = data, .num_bytes = ARRAY_SIZE(data), .i2c_dev_id = 0x7f,
+ .i2c_transaction_delay = 0xf, },
+ { .bytes = data, .num_bytes = ARRAY_SIZE(data), .i2c_dev_id = 0x7e,
+ .i2c_transaction_delay = 0xe, },
+ { .bytes = data, .num_bytes = ARRAY_SIZE(data), .i2c_dev_id = 0x7d,
+ .i2c_transaction_delay = 0xd, },
+ },
+ },
+ },
+ {
+ .desc = "DP_REMOTE_I2C_WRITE with port number",
+ .in = {
+ .req_type = DP_REMOTE_I2C_WRITE,
+ .u.i2c_write.port_number = 0xf,
+ },
+ },
+ {
+ .desc = "DP_REMOTE_I2C_WRITE with I2C device ID",
+ .in = {
+ .req_type = DP_REMOTE_I2C_WRITE,
+ .u.i2c_write.write_i2c_device_id = 0x7f,
+ },
+ },
+ {
+ .desc = "DP_REMOTE_I2C_WRITE with data array",
+ .in = {
+ .req_type = DP_REMOTE_I2C_WRITE,
+ .u.i2c_write.num_bytes = ARRAY_SIZE(data),
+ .u.i2c_write.bytes = data,
+ },
+ },
+ {
+ .desc = "DP_QUERY_STREAM_ENC_STATUS with stream ID",
+ .in = {
+ .req_type = DP_QUERY_STREAM_ENC_STATUS,
+ .u.enc_status.stream_id = 1,
+ },
+ },
+ {
+ .desc = "DP_QUERY_STREAM_ENC_STATUS with client ID",
+ .in = {
+ .req_type = DP_QUERY_STREAM_ENC_STATUS,
+ .u.enc_status.client_id = { 0x4f, 0x7f, 0xb4, 0x00, 0x8c, 0x0d, 0x67 },
+ },
+ },
+ {
+ .desc = "DP_QUERY_STREAM_ENC_STATUS with stream event",
+ .in = {
+ .req_type = DP_QUERY_STREAM_ENC_STATUS,
+ .u.enc_status.stream_event = 3,
+ },
+ },
+ {
+ .desc = "DP_QUERY_STREAM_ENC_STATUS with valid stream event",
+ .in = {
+ .req_type = DP_QUERY_STREAM_ENC_STATUS,
+ .u.enc_status.valid_stream_event = 0,
+ },
+ },
+ {
+ .desc = "DP_QUERY_STREAM_ENC_STATUS with stream behavior",
+ .in = {
+ .req_type = DP_QUERY_STREAM_ENC_STATUS,
+ .u.enc_status.stream_behavior = 3,
+ },
+ },
+ {
+ .desc = "DP_QUERY_STREAM_ENC_STATUS with a valid stream behavior",
+ .in = {
+ .req_type = DP_QUERY_STREAM_ENC_STATUS,
+ .u.enc_status.valid_stream_behavior = 1,
+ }
+ },
+};
+
+static bool
+sideband_msg_req_equal(const struct drm_dp_sideband_msg_req_body *in,
+ const struct drm_dp_sideband_msg_req_body *out)
+{
+ const struct drm_dp_remote_i2c_read_tx *txin, *txout;
+ int i;
+
+ if (in->req_type != out->req_type)
+ return false;
+
+ switch (in->req_type) {
+ /*
+ * Compare struct members manually for request types which can't be
+ * compared simply using memcmp(). This is because said request types
+ * contain pointers to other allocated structs
+ */
+ case DP_REMOTE_I2C_READ:
+#define IN in->u.i2c_read
+#define OUT out->u.i2c_read
+ if (IN.num_bytes_read != OUT.num_bytes_read ||
+ IN.num_transactions != OUT.num_transactions ||
+ IN.port_number != OUT.port_number ||
+ IN.read_i2c_device_id != OUT.read_i2c_device_id)
+ return false;
+
+ for (i = 0; i < IN.num_transactions; i++) {
+ txin = &IN.transactions[i];
+ txout = &OUT.transactions[i];
+
+ if (txin->i2c_dev_id != txout->i2c_dev_id ||
+ txin->no_stop_bit != txout->no_stop_bit ||
+ txin->num_bytes != txout->num_bytes ||
+ txin->i2c_transaction_delay !=
+ txout->i2c_transaction_delay)
+ return false;
+
+ if (memcmp(txin->bytes, txout->bytes,
+ txin->num_bytes) != 0)
+ return false;
+ }
+ break;
+#undef IN
+#undef OUT
+
+ case DP_REMOTE_DPCD_WRITE:
+#define IN in->u.dpcd_write
+#define OUT out->u.dpcd_write
+ if (IN.dpcd_address != OUT.dpcd_address ||
+ IN.num_bytes != OUT.num_bytes ||
+ IN.port_number != OUT.port_number)
+ return false;
+
+ return memcmp(IN.bytes, OUT.bytes, IN.num_bytes) == 0;
+#undef IN
+#undef OUT
+
+ case DP_REMOTE_I2C_WRITE:
+#define IN in->u.i2c_write
+#define OUT out->u.i2c_write
+ if (IN.port_number != OUT.port_number ||
+ IN.write_i2c_device_id != OUT.write_i2c_device_id ||
+ IN.num_bytes != OUT.num_bytes)
+ return false;
+
+ return memcmp(IN.bytes, OUT.bytes, IN.num_bytes) == 0;
+#undef IN
+#undef OUT
+
+ default:
+ return memcmp(in, out, sizeof(*in)) == 0;
+ }
+
+ return true;
+}
+
+static void drm_test_dp_mst_msg_printf(struct drm_printer *p, struct va_format *vaf)
+{
+ struct kunit *test = p->arg;
+
+ kunit_err(test, "%pV", vaf);
+}
+
+static void drm_test_dp_mst_sideband_msg_req_decode(struct kunit *test)
+{
+ const struct drm_dp_mst_sideband_msg_req_test *params = test->param_value;
+ const struct drm_dp_sideband_msg_req_body *in = &params->in;
+ struct drm_dp_sideband_msg_req_body *out;
+ struct drm_dp_sideband_msg_tx *txmsg;
+ struct drm_printer p = {
+ .printfn = drm_test_dp_mst_msg_printf,
+ .arg = test
+ };
+ int i;
+
+ out = kunit_kzalloc(test, sizeof(*out), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_NULL(test, out);
+
+ txmsg = kunit_kzalloc(test, sizeof(*txmsg), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_NULL(test, txmsg);
+
+ drm_dp_encode_sideband_req(in, txmsg);
+ KUNIT_EXPECT_GE_MSG(test, drm_dp_decode_sideband_req(txmsg, out), 0,
+ "Failed to decode sideband request");
+
+ if (!sideband_msg_req_equal(in, out)) {
+ KUNIT_FAIL(test, "Encode/decode failed");
+ kunit_err(test, "Expected:");
+ drm_dp_dump_sideband_msg_req_body(in, 1, &p);
+ kunit_err(test, "Got:");
+ drm_dp_dump_sideband_msg_req_body(out, 1, &p);
+ }
+
+ switch (in->req_type) {
+ case DP_REMOTE_DPCD_WRITE:
+ kfree(out->u.dpcd_write.bytes);
+ break;
+ case DP_REMOTE_I2C_READ:
+ for (i = 0; i < out->u.i2c_read.num_transactions; i++)
+ kfree(out->u.i2c_read.transactions[i].bytes);
+ break;
+ case DP_REMOTE_I2C_WRITE:
+ kfree(out->u.i2c_write.bytes);
+ break;
+ }
+}
+
+static void
+drm_dp_mst_sideband_msg_req_desc(const struct drm_dp_mst_sideband_msg_req_test *t, char *desc)
+{
+ strcpy(desc, t->desc);
+}
+
+KUNIT_ARRAY_PARAM(drm_dp_mst_sideband_msg_req, drm_dp_mst_sideband_msg_req_cases,
+ drm_dp_mst_sideband_msg_req_desc);
+
+static struct kunit_case drm_dp_mst_helper_tests[] = {
+ KUNIT_CASE_PARAM(drm_test_dp_mst_calc_pbn_mode, drm_dp_mst_calc_pbn_mode_gen_params),
+ KUNIT_CASE_PARAM(drm_test_dp_mst_sideband_msg_req_decode,
+ drm_dp_mst_sideband_msg_req_gen_params),
+ { }
+};
+
+static struct kunit_suite drm_dp_mst_helper_test_suite = {
+ .name = "drm_dp_mst_helper",
+ .test_cases = drm_dp_mst_helper_tests,
+};
+
+kunit_test_suite(drm_dp_mst_helper_test_suite);
+
+MODULE_LICENSE("GPL");