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(). ... --- .../gpu/drm/amd/display/dc/dce/dce_panel_cntl.c | 293 +++++++++++++++++++++ 1 file changed, 293 insertions(+) create mode 100644 drivers/gpu/drm/amd/display/dc/dce/dce_panel_cntl.c (limited to 'drivers/gpu/drm/amd/display/dc/dce/dce_panel_cntl.c') diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_panel_cntl.c b/drivers/gpu/drm/amd/display/dc/dce/dce_panel_cntl.c new file mode 100644 index 000000000..e8570060d --- /dev/null +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_panel_cntl.c @@ -0,0 +1,293 @@ +/* + * Copyright 2012-15 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: AMD + * + */ + +#include "reg_helper.h" +#include "core_types.h" +#include "dc_dmub_srv.h" +#include "panel_cntl.h" +#include "dce_panel_cntl.h" +#include "atom.h" + +#define TO_DCE_PANEL_CNTL(panel_cntl)\ + container_of(panel_cntl, struct dce_panel_cntl, base) + +#define CTX \ + dce_panel_cntl->base.ctx + +#define DC_LOGGER \ + dce_panel_cntl->base.ctx->logger + +#define REG(reg)\ + dce_panel_cntl->regs->reg + +#undef FN +#define FN(reg_name, field_name) \ + dce_panel_cntl->shift->field_name, dce_panel_cntl->mask->field_name + +static unsigned int dce_get_16_bit_backlight_from_pwm(struct panel_cntl *panel_cntl) +{ + uint64_t current_backlight; + uint32_t bl_period, bl_int_count; + uint32_t bl_pwm, fractional_duty_cycle_en; + uint32_t bl_period_mask, bl_pwm_mask; + struct dce_panel_cntl *dce_panel_cntl = TO_DCE_PANEL_CNTL(panel_cntl); + + REG_READ(BL_PWM_PERIOD_CNTL); + REG_GET(BL_PWM_PERIOD_CNTL, BL_PWM_PERIOD, &bl_period); + REG_GET(BL_PWM_PERIOD_CNTL, BL_PWM_PERIOD_BITCNT, &bl_int_count); + + REG_READ(BL_PWM_CNTL); + REG_GET(BL_PWM_CNTL, BL_ACTIVE_INT_FRAC_CNT, (uint32_t *)(&bl_pwm)); + REG_GET(BL_PWM_CNTL, BL_PWM_FRACTIONAL_EN, &fractional_duty_cycle_en); + + if (bl_int_count == 0) + bl_int_count = 16; + + bl_period_mask = (1 << bl_int_count) - 1; + bl_period &= bl_period_mask; + + bl_pwm_mask = bl_period_mask << (16 - bl_int_count); + + if (fractional_duty_cycle_en == 0) + bl_pwm &= bl_pwm_mask; + else + bl_pwm &= 0xFFFF; + + current_backlight = (uint64_t)bl_pwm << (1 + bl_int_count); + + if (bl_period == 0) + bl_period = 0xFFFF; + + current_backlight = div_u64(current_backlight, bl_period); + current_backlight = (current_backlight + 1) >> 1; + + return (uint32_t)(current_backlight); +} + +static uint32_t dce_panel_cntl_hw_init(struct panel_cntl *panel_cntl) +{ + struct dce_panel_cntl *dce_panel_cntl = TO_DCE_PANEL_CNTL(panel_cntl); + uint32_t value; + uint32_t current_backlight; + + /* It must not be 0, so we have to restore them + * Bios bug w/a - period resets to zero, + * restoring to cache values which is always correct + */ + REG_GET(BL_PWM_CNTL, BL_ACTIVE_INT_FRAC_CNT, &value); + + if (panel_cntl->stored_backlight_registers.BL_PWM_CNTL != 0) { + REG_WRITE(BL_PWM_CNTL, + panel_cntl->stored_backlight_registers.BL_PWM_CNTL); + REG_WRITE(BL_PWM_CNTL2, + panel_cntl->stored_backlight_registers.BL_PWM_CNTL2); + REG_WRITE(BL_PWM_PERIOD_CNTL, + panel_cntl->stored_backlight_registers.BL_PWM_PERIOD_CNTL); + REG_UPDATE(PWRSEQ_REF_DIV, + BL_PWM_REF_DIV, + panel_cntl->stored_backlight_registers.LVTMA_PWRSEQ_REF_DIV_BL_PWM_REF_DIV); + } else if ((value != 0) && (value != 1)) { + panel_cntl->stored_backlight_registers.BL_PWM_CNTL = + REG_READ(BL_PWM_CNTL); + panel_cntl->stored_backlight_registers.BL_PWM_CNTL2 = + REG_READ(BL_PWM_CNTL2); + panel_cntl->stored_backlight_registers.BL_PWM_PERIOD_CNTL = + REG_READ(BL_PWM_PERIOD_CNTL); + + REG_GET(PWRSEQ_REF_DIV, BL_PWM_REF_DIV, + &panel_cntl->stored_backlight_registers.LVTMA_PWRSEQ_REF_DIV_BL_PWM_REF_DIV); + } else { + /* TODO: Note: This should not really happen since VBIOS + * should have initialized PWM registers on boot. + */ + REG_WRITE(BL_PWM_CNTL, 0x8000FA00); + REG_WRITE(BL_PWM_PERIOD_CNTL, 0x000C0FA0); + } + + // Have driver take backlight control + // TakeBacklightControl(true) + value = REG_READ(BIOS_SCRATCH_2); + value |= ATOM_S2_VRI_BRIGHT_ENABLE; + REG_WRITE(BIOS_SCRATCH_2, value); + + // Enable the backlight output + REG_UPDATE(BL_PWM_CNTL, BL_PWM_EN, 1); + + // Unlock group 2 backlight registers + REG_UPDATE(BL_PWM_GRP1_REG_LOCK, + BL_PWM_GRP1_REG_LOCK, 0); + + current_backlight = dce_get_16_bit_backlight_from_pwm(panel_cntl); + + return current_backlight; +} + +static bool dce_is_panel_backlight_on(struct panel_cntl *panel_cntl) +{ + struct dce_panel_cntl *dce_panel_cntl = TO_DCE_PANEL_CNTL(panel_cntl); + uint32_t blon, blon_ovrd, pwrseq_target_state; + + REG_GET_2(PWRSEQ_CNTL, LVTMA_BLON, &blon, LVTMA_BLON_OVRD, &blon_ovrd); + REG_GET(PWRSEQ_CNTL, LVTMA_PWRSEQ_TARGET_STATE, &pwrseq_target_state); + + if (blon_ovrd) + return blon; + else + return pwrseq_target_state; +} + +static bool dce_is_panel_powered_on(struct panel_cntl *panel_cntl) +{ + struct dce_panel_cntl *dce_panel_cntl = TO_DCE_PANEL_CNTL(panel_cntl); + uint32_t pwr_seq_state, dig_on, dig_on_ovrd; + + REG_GET(PWRSEQ_STATE, LVTMA_PWRSEQ_TARGET_STATE_R, &pwr_seq_state); + + REG_GET_2(PWRSEQ_CNTL, LVTMA_DIGON, &dig_on, LVTMA_DIGON_OVRD, &dig_on_ovrd); + + return (pwr_seq_state == 1) || (dig_on == 1 && dig_on_ovrd == 1); +} + +static void dce_store_backlight_level(struct panel_cntl *panel_cntl) +{ + struct dce_panel_cntl *dce_panel_cntl = TO_DCE_PANEL_CNTL(panel_cntl); + + panel_cntl->stored_backlight_registers.BL_PWM_CNTL = + REG_READ(BL_PWM_CNTL); + panel_cntl->stored_backlight_registers.BL_PWM_CNTL2 = + REG_READ(BL_PWM_CNTL2); + panel_cntl->stored_backlight_registers.BL_PWM_PERIOD_CNTL = + REG_READ(BL_PWM_PERIOD_CNTL); + + REG_GET(PWRSEQ_REF_DIV, BL_PWM_REF_DIV, + &panel_cntl->stored_backlight_registers.LVTMA_PWRSEQ_REF_DIV_BL_PWM_REF_DIV); +} + +static void dce_driver_set_backlight(struct panel_cntl *panel_cntl, + uint32_t backlight_pwm_u16_16) +{ + uint32_t backlight_16bit; + uint32_t masked_pwm_period; + uint8_t bit_count; + uint64_t active_duty_cycle; + uint32_t pwm_period_bitcnt; + struct dce_panel_cntl *dce_panel_cntl = TO_DCE_PANEL_CNTL(panel_cntl); + + /* + * 1. Find 16 bit backlight active duty cycle, where 0 <= backlight + * active duty cycle <= backlight period + */ + + /* 1.1 Apply bitmask for backlight period value based on value of BITCNT + */ + REG_GET_2(BL_PWM_PERIOD_CNTL, + BL_PWM_PERIOD_BITCNT, &pwm_period_bitcnt, + BL_PWM_PERIOD, &masked_pwm_period); + + if (pwm_period_bitcnt == 0) + bit_count = 16; + else + bit_count = pwm_period_bitcnt; + + /* e.g. maskedPwmPeriod = 0x24 when bitCount is 6 */ + masked_pwm_period = masked_pwm_period & ((1 << bit_count) - 1); + + /* 1.2 Calculate integer active duty cycle required upper 16 bits + * contain integer component, lower 16 bits contain fractional component + * of active duty cycle e.g. 0x21BDC0 = 0xEFF0 * 0x24 + */ + active_duty_cycle = backlight_pwm_u16_16 * masked_pwm_period; + + /* 1.3 Calculate 16 bit active duty cycle from integer and fractional + * components shift by bitCount then mask 16 bits and add rounding bit + * from MSB of fraction e.g. 0x86F7 = ((0x21BDC0 >> 6) & 0xFFF) + 0 + */ + backlight_16bit = active_duty_cycle >> bit_count; + backlight_16bit &= 0xFFFF; + backlight_16bit += (active_duty_cycle >> (bit_count - 1)) & 0x1; + + /* + * 2. Program register with updated value + */ + + /* 2.1 Lock group 2 backlight registers */ + + REG_UPDATE_2(BL_PWM_GRP1_REG_LOCK, + BL_PWM_GRP1_IGNORE_MASTER_LOCK_EN, 1, + BL_PWM_GRP1_REG_LOCK, 1); + + // 2.2 Write new active duty cycle + REG_UPDATE(BL_PWM_CNTL, BL_ACTIVE_INT_FRAC_CNT, backlight_16bit); + + /* 2.3 Unlock group 2 backlight registers */ + REG_UPDATE(BL_PWM_GRP1_REG_LOCK, + BL_PWM_GRP1_REG_LOCK, 0); + + /* 3 Wait for pending bit to be cleared */ + REG_WAIT(BL_PWM_GRP1_REG_LOCK, + BL_PWM_GRP1_REG_UPDATE_PENDING, 0, + 1, 10000); +} + +static void dce_panel_cntl_destroy(struct panel_cntl **panel_cntl) +{ + struct dce_panel_cntl *dce_panel_cntl = TO_DCE_PANEL_CNTL(*panel_cntl); + + kfree(dce_panel_cntl); + *panel_cntl = NULL; +} + +static const struct panel_cntl_funcs dce_link_panel_cntl_funcs = { + .destroy = dce_panel_cntl_destroy, + .hw_init = dce_panel_cntl_hw_init, + .is_panel_backlight_on = dce_is_panel_backlight_on, + .is_panel_powered_on = dce_is_panel_powered_on, + .store_backlight_level = dce_store_backlight_level, + .driver_set_backlight = dce_driver_set_backlight, + .get_current_backlight = dce_get_16_bit_backlight_from_pwm, +}; + +void dce_panel_cntl_construct( + struct dce_panel_cntl *dce_panel_cntl, + const struct panel_cntl_init_data *init_data, + const struct dce_panel_cntl_registers *regs, + const struct dce_panel_cntl_shift *shift, + const struct dce_panel_cntl_mask *mask) +{ + struct panel_cntl *base = &dce_panel_cntl->base; + + base->stored_backlight_registers.BL_PWM_CNTL = 0; + base->stored_backlight_registers.BL_PWM_CNTL2 = 0; + base->stored_backlight_registers.BL_PWM_PERIOD_CNTL = 0; + base->stored_backlight_registers.LVTMA_PWRSEQ_REF_DIV_BL_PWM_REF_DIV = 0; + + dce_panel_cntl->regs = regs; + dce_panel_cntl->shift = shift; + dce_panel_cntl->mask = mask; + + dce_panel_cntl->base.funcs = &dce_link_panel_cntl_funcs; + dce_panel_cntl->base.ctx = init_data->ctx; + dce_panel_cntl->base.inst = init_data->inst; +} -- cgit v1.2.3