From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 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(). ... --- drivers/gpu/drm/panfrost/panfrost_device.c | 426 +++++++++++++++++++++++++++++ 1 file changed, 426 insertions(+) create mode 100644 drivers/gpu/drm/panfrost/panfrost_device.c (limited to 'drivers/gpu/drm/panfrost/panfrost_device.c') diff --git a/drivers/gpu/drm/panfrost/panfrost_device.c b/drivers/gpu/drm/panfrost/panfrost_device.c new file mode 100644 index 000000000..ee612303f --- /dev/null +++ b/drivers/gpu/drm/panfrost/panfrost_device.c @@ -0,0 +1,426 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright 2018 Marty E. Plummer */ +/* Copyright 2019 Linaro, Ltd, Rob Herring */ + +#include +#include +#include +#include +#include + +#include "panfrost_device.h" +#include "panfrost_devfreq.h" +#include "panfrost_features.h" +#include "panfrost_issues.h" +#include "panfrost_gpu.h" +#include "panfrost_job.h" +#include "panfrost_mmu.h" +#include "panfrost_perfcnt.h" + +static int panfrost_reset_init(struct panfrost_device *pfdev) +{ + pfdev->rstc = devm_reset_control_array_get_optional_exclusive(pfdev->dev); + if (IS_ERR(pfdev->rstc)) { + dev_err(pfdev->dev, "get reset failed %ld\n", PTR_ERR(pfdev->rstc)); + return PTR_ERR(pfdev->rstc); + } + + return reset_control_deassert(pfdev->rstc); +} + +static void panfrost_reset_fini(struct panfrost_device *pfdev) +{ + reset_control_assert(pfdev->rstc); +} + +static int panfrost_clk_init(struct panfrost_device *pfdev) +{ + int err; + unsigned long rate; + + pfdev->clock = devm_clk_get(pfdev->dev, NULL); + if (IS_ERR(pfdev->clock)) { + dev_err(pfdev->dev, "get clock failed %ld\n", PTR_ERR(pfdev->clock)); + return PTR_ERR(pfdev->clock); + } + + rate = clk_get_rate(pfdev->clock); + dev_info(pfdev->dev, "clock rate = %lu\n", rate); + + err = clk_prepare_enable(pfdev->clock); + if (err) + return err; + + pfdev->bus_clock = devm_clk_get_optional(pfdev->dev, "bus"); + if (IS_ERR(pfdev->bus_clock)) { + dev_err(pfdev->dev, "get bus_clock failed %ld\n", + PTR_ERR(pfdev->bus_clock)); + err = PTR_ERR(pfdev->bus_clock); + goto disable_clock; + } + + if (pfdev->bus_clock) { + rate = clk_get_rate(pfdev->bus_clock); + dev_info(pfdev->dev, "bus_clock rate = %lu\n", rate); + + err = clk_prepare_enable(pfdev->bus_clock); + if (err) + goto disable_clock; + } + + return 0; + +disable_clock: + clk_disable_unprepare(pfdev->clock); + + return err; +} + +static void panfrost_clk_fini(struct panfrost_device *pfdev) +{ + clk_disable_unprepare(pfdev->bus_clock); + clk_disable_unprepare(pfdev->clock); +} + +static int panfrost_regulator_init(struct panfrost_device *pfdev) +{ + int ret, i; + + pfdev->regulators = devm_kcalloc(pfdev->dev, pfdev->comp->num_supplies, + sizeof(*pfdev->regulators), + GFP_KERNEL); + if (!pfdev->regulators) + return -ENOMEM; + + for (i = 0; i < pfdev->comp->num_supplies; i++) + pfdev->regulators[i].supply = pfdev->comp->supply_names[i]; + + ret = devm_regulator_bulk_get(pfdev->dev, + pfdev->comp->num_supplies, + pfdev->regulators); + if (ret < 0) { + if (ret != -EPROBE_DEFER) + dev_err(pfdev->dev, "failed to get regulators: %d\n", + ret); + return ret; + } + + ret = regulator_bulk_enable(pfdev->comp->num_supplies, + pfdev->regulators); + if (ret < 0) { + dev_err(pfdev->dev, "failed to enable regulators: %d\n", ret); + return ret; + } + + return 0; +} + +static void panfrost_regulator_fini(struct panfrost_device *pfdev) +{ + if (!pfdev->regulators) + return; + + regulator_bulk_disable(pfdev->comp->num_supplies, pfdev->regulators); +} + +static void panfrost_pm_domain_fini(struct panfrost_device *pfdev) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(pfdev->pm_domain_devs); i++) { + if (!pfdev->pm_domain_devs[i]) + break; + + if (pfdev->pm_domain_links[i]) + device_link_del(pfdev->pm_domain_links[i]); + + dev_pm_domain_detach(pfdev->pm_domain_devs[i], true); + } +} + +static int panfrost_pm_domain_init(struct panfrost_device *pfdev) +{ + int err; + int i, num_domains; + + num_domains = of_count_phandle_with_args(pfdev->dev->of_node, + "power-domains", + "#power-domain-cells"); + + /* + * Single domain is handled by the core, and, if only a single power + * the power domain is requested, the property is optional. + */ + if (num_domains < 2 && pfdev->comp->num_pm_domains < 2) + return 0; + + if (num_domains != pfdev->comp->num_pm_domains) { + dev_err(pfdev->dev, + "Incorrect number of power domains: %d provided, %d needed\n", + num_domains, pfdev->comp->num_pm_domains); + return -EINVAL; + } + + if (WARN(num_domains > ARRAY_SIZE(pfdev->pm_domain_devs), + "Too many supplies in compatible structure.\n")) + return -EINVAL; + + for (i = 0; i < num_domains; i++) { + pfdev->pm_domain_devs[i] = + dev_pm_domain_attach_by_name(pfdev->dev, + pfdev->comp->pm_domain_names[i]); + if (IS_ERR_OR_NULL(pfdev->pm_domain_devs[i])) { + err = PTR_ERR(pfdev->pm_domain_devs[i]) ? : -ENODATA; + pfdev->pm_domain_devs[i] = NULL; + dev_err(pfdev->dev, + "failed to get pm-domain %s(%d): %d\n", + pfdev->comp->pm_domain_names[i], i, err); + goto err; + } + + pfdev->pm_domain_links[i] = device_link_add(pfdev->dev, + pfdev->pm_domain_devs[i], DL_FLAG_PM_RUNTIME | + DL_FLAG_STATELESS | DL_FLAG_RPM_ACTIVE); + if (!pfdev->pm_domain_links[i]) { + dev_err(pfdev->pm_domain_devs[i], + "adding device link failed!\n"); + err = -ENODEV; + goto err; + } + } + + return 0; + +err: + panfrost_pm_domain_fini(pfdev); + return err; +} + +int panfrost_device_init(struct panfrost_device *pfdev) +{ + int err; + + mutex_init(&pfdev->sched_lock); + INIT_LIST_HEAD(&pfdev->scheduled_jobs); + INIT_LIST_HEAD(&pfdev->as_lru_list); + + spin_lock_init(&pfdev->as_lock); + + err = panfrost_clk_init(pfdev); + if (err) { + dev_err(pfdev->dev, "clk init failed %d\n", err); + return err; + } + + err = panfrost_devfreq_init(pfdev); + if (err) { + if (err != -EPROBE_DEFER) + dev_err(pfdev->dev, "devfreq init failed %d\n", err); + goto out_clk; + } + + /* OPP will handle regulators */ + if (!pfdev->pfdevfreq.opp_of_table_added) { + err = panfrost_regulator_init(pfdev); + if (err) + goto out_devfreq; + } + + err = panfrost_reset_init(pfdev); + if (err) { + dev_err(pfdev->dev, "reset init failed %d\n", err); + goto out_regulator; + } + + err = panfrost_pm_domain_init(pfdev); + if (err) + goto out_reset; + + pfdev->iomem = devm_platform_ioremap_resource(pfdev->pdev, 0); + if (IS_ERR(pfdev->iomem)) { + err = PTR_ERR(pfdev->iomem); + goto out_pm_domain; + } + + err = panfrost_gpu_init(pfdev); + if (err) + goto out_pm_domain; + + err = panfrost_mmu_init(pfdev); + if (err) + goto out_gpu; + + err = panfrost_job_init(pfdev); + if (err) + goto out_mmu; + + err = panfrost_perfcnt_init(pfdev); + if (err) + goto out_job; + + return 0; +out_job: + panfrost_job_fini(pfdev); +out_mmu: + panfrost_mmu_fini(pfdev); +out_gpu: + panfrost_gpu_fini(pfdev); +out_pm_domain: + panfrost_pm_domain_fini(pfdev); +out_reset: + panfrost_reset_fini(pfdev); +out_regulator: + panfrost_regulator_fini(pfdev); +out_devfreq: + panfrost_devfreq_fini(pfdev); +out_clk: + panfrost_clk_fini(pfdev); + return err; +} + +void panfrost_device_fini(struct panfrost_device *pfdev) +{ + panfrost_perfcnt_fini(pfdev); + panfrost_job_fini(pfdev); + panfrost_mmu_fini(pfdev); + panfrost_gpu_fini(pfdev); + panfrost_pm_domain_fini(pfdev); + panfrost_reset_fini(pfdev); + panfrost_devfreq_fini(pfdev); + panfrost_regulator_fini(pfdev); + panfrost_clk_fini(pfdev); +} + +#define PANFROST_EXCEPTION(id) \ + [DRM_PANFROST_EXCEPTION_ ## id] = { \ + .name = #id, \ + } + +struct panfrost_exception_info { + const char *name; +}; + +static const struct panfrost_exception_info panfrost_exception_infos[] = { + PANFROST_EXCEPTION(OK), + PANFROST_EXCEPTION(DONE), + PANFROST_EXCEPTION(INTERRUPTED), + PANFROST_EXCEPTION(STOPPED), + PANFROST_EXCEPTION(TERMINATED), + PANFROST_EXCEPTION(KABOOM), + PANFROST_EXCEPTION(EUREKA), + PANFROST_EXCEPTION(ACTIVE), + PANFROST_EXCEPTION(JOB_CONFIG_FAULT), + PANFROST_EXCEPTION(JOB_POWER_FAULT), + PANFROST_EXCEPTION(JOB_READ_FAULT), + PANFROST_EXCEPTION(JOB_WRITE_FAULT), + PANFROST_EXCEPTION(JOB_AFFINITY_FAULT), + PANFROST_EXCEPTION(JOB_BUS_FAULT), + PANFROST_EXCEPTION(INSTR_INVALID_PC), + PANFROST_EXCEPTION(INSTR_INVALID_ENC), + PANFROST_EXCEPTION(INSTR_TYPE_MISMATCH), + PANFROST_EXCEPTION(INSTR_OPERAND_FAULT), + PANFROST_EXCEPTION(INSTR_TLS_FAULT), + PANFROST_EXCEPTION(INSTR_BARRIER_FAULT), + PANFROST_EXCEPTION(INSTR_ALIGN_FAULT), + PANFROST_EXCEPTION(DATA_INVALID_FAULT), + PANFROST_EXCEPTION(TILE_RANGE_FAULT), + PANFROST_EXCEPTION(ADDR_RANGE_FAULT), + PANFROST_EXCEPTION(IMPRECISE_FAULT), + PANFROST_EXCEPTION(OOM), + PANFROST_EXCEPTION(OOM_AFBC), + PANFROST_EXCEPTION(UNKNOWN), + PANFROST_EXCEPTION(DELAYED_BUS_FAULT), + PANFROST_EXCEPTION(GPU_SHAREABILITY_FAULT), + PANFROST_EXCEPTION(SYS_SHAREABILITY_FAULT), + PANFROST_EXCEPTION(GPU_CACHEABILITY_FAULT), + PANFROST_EXCEPTION(TRANSLATION_FAULT_0), + PANFROST_EXCEPTION(TRANSLATION_FAULT_1), + PANFROST_EXCEPTION(TRANSLATION_FAULT_2), + PANFROST_EXCEPTION(TRANSLATION_FAULT_3), + PANFROST_EXCEPTION(TRANSLATION_FAULT_4), + PANFROST_EXCEPTION(TRANSLATION_FAULT_IDENTITY), + PANFROST_EXCEPTION(PERM_FAULT_0), + PANFROST_EXCEPTION(PERM_FAULT_1), + PANFROST_EXCEPTION(PERM_FAULT_2), + PANFROST_EXCEPTION(PERM_FAULT_3), + PANFROST_EXCEPTION(TRANSTAB_BUS_FAULT_0), + PANFROST_EXCEPTION(TRANSTAB_BUS_FAULT_1), + PANFROST_EXCEPTION(TRANSTAB_BUS_FAULT_2), + PANFROST_EXCEPTION(TRANSTAB_BUS_FAULT_3), + PANFROST_EXCEPTION(ACCESS_FLAG_0), + PANFROST_EXCEPTION(ACCESS_FLAG_1), + PANFROST_EXCEPTION(ACCESS_FLAG_2), + PANFROST_EXCEPTION(ACCESS_FLAG_3), + PANFROST_EXCEPTION(ADDR_SIZE_FAULT_IN0), + PANFROST_EXCEPTION(ADDR_SIZE_FAULT_IN1), + PANFROST_EXCEPTION(ADDR_SIZE_FAULT_IN2), + PANFROST_EXCEPTION(ADDR_SIZE_FAULT_IN3), + PANFROST_EXCEPTION(ADDR_SIZE_FAULT_OUT0), + PANFROST_EXCEPTION(ADDR_SIZE_FAULT_OUT1), + PANFROST_EXCEPTION(ADDR_SIZE_FAULT_OUT2), + PANFROST_EXCEPTION(ADDR_SIZE_FAULT_OUT3), + PANFROST_EXCEPTION(MEM_ATTR_FAULT_0), + PANFROST_EXCEPTION(MEM_ATTR_FAULT_1), + PANFROST_EXCEPTION(MEM_ATTR_FAULT_2), + PANFROST_EXCEPTION(MEM_ATTR_FAULT_3), + PANFROST_EXCEPTION(MEM_ATTR_NONCACHE_0), + PANFROST_EXCEPTION(MEM_ATTR_NONCACHE_1), + PANFROST_EXCEPTION(MEM_ATTR_NONCACHE_2), + PANFROST_EXCEPTION(MEM_ATTR_NONCACHE_3), +}; + +const char *panfrost_exception_name(u32 exception_code) +{ + if (WARN_ON(exception_code >= ARRAY_SIZE(panfrost_exception_infos) || + !panfrost_exception_infos[exception_code].name)) + return "Unknown exception type"; + + return panfrost_exception_infos[exception_code].name; +} + +bool panfrost_exception_needs_reset(const struct panfrost_device *pfdev, + u32 exception_code) +{ + /* If an occlusion query write causes a bus fault on affected GPUs, + * future fragment jobs may hang. Reset to workaround. + */ + if (exception_code == DRM_PANFROST_EXCEPTION_JOB_BUS_FAULT) + return panfrost_has_hw_issue(pfdev, HW_ISSUE_TTRX_3076); + + /* No other GPUs we support need a reset */ + return false; +} + +void panfrost_device_reset(struct panfrost_device *pfdev) +{ + panfrost_gpu_soft_reset(pfdev); + + panfrost_gpu_power_on(pfdev); + panfrost_mmu_reset(pfdev); + panfrost_job_enable_interrupts(pfdev); +} + +#ifdef CONFIG_PM +int panfrost_device_resume(struct device *dev) +{ + struct panfrost_device *pfdev = dev_get_drvdata(dev); + + panfrost_device_reset(pfdev); + panfrost_devfreq_resume(pfdev); + + return 0; +} + +int panfrost_device_suspend(struct device *dev) +{ + struct panfrost_device *pfdev = dev_get_drvdata(dev); + + if (!panfrost_job_is_idle(pfdev)) + return -EBUSY; + + panfrost_devfreq_suspend(pfdev); + panfrost_gpu_power_off(pfdev); + + return 0; +} +#endif -- cgit v1.2.3