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/tegra/rgb.c | 355 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 355 insertions(+) create mode 100644 drivers/gpu/drm/tegra/rgb.c (limited to 'drivers/gpu/drm/tegra/rgb.c') diff --git a/drivers/gpu/drm/tegra/rgb.c b/drivers/gpu/drm/tegra/rgb.c new file mode 100644 index 000000000..ff8fce36d --- /dev/null +++ b/drivers/gpu/drm/tegra/rgb.c @@ -0,0 +1,355 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2012 Avionic Design GmbH + * Copyright (C) 2012 NVIDIA CORPORATION. All rights reserved. + */ + +#include + +#include +#include +#include + +#include "drm.h" +#include "dc.h" + +struct tegra_rgb { + struct tegra_output output; + struct tegra_dc *dc; + + struct clk *pll_d_out0; + struct clk *pll_d2_out0; + struct clk *clk_parent; + struct clk *clk; +}; + +static inline struct tegra_rgb *to_rgb(struct tegra_output *output) +{ + return container_of(output, struct tegra_rgb, output); +} + +struct reg_entry { + unsigned long offset; + unsigned long value; +}; + +static const struct reg_entry rgb_enable[] = { + { DC_COM_PIN_OUTPUT_ENABLE(0), 0x00000000 }, + { DC_COM_PIN_OUTPUT_ENABLE(1), 0x00000000 }, + { DC_COM_PIN_OUTPUT_ENABLE(2), 0x00000000 }, + { DC_COM_PIN_OUTPUT_ENABLE(3), 0x00000000 }, + { DC_COM_PIN_OUTPUT_POLARITY(0), 0x00000000 }, + { DC_COM_PIN_OUTPUT_POLARITY(1), 0x01000000 }, + { DC_COM_PIN_OUTPUT_POLARITY(2), 0x00000000 }, + { DC_COM_PIN_OUTPUT_POLARITY(3), 0x00000000 }, + { DC_COM_PIN_OUTPUT_DATA(0), 0x00000000 }, + { DC_COM_PIN_OUTPUT_DATA(1), 0x00000000 }, + { DC_COM_PIN_OUTPUT_DATA(2), 0x00000000 }, + { DC_COM_PIN_OUTPUT_DATA(3), 0x00000000 }, + { DC_COM_PIN_OUTPUT_SELECT(0), 0x00000000 }, + { DC_COM_PIN_OUTPUT_SELECT(1), 0x00000000 }, + { DC_COM_PIN_OUTPUT_SELECT(2), 0x00000000 }, + { DC_COM_PIN_OUTPUT_SELECT(3), 0x00000000 }, + { DC_COM_PIN_OUTPUT_SELECT(4), 0x00210222 }, + { DC_COM_PIN_OUTPUT_SELECT(5), 0x00002200 }, + { DC_COM_PIN_OUTPUT_SELECT(6), 0x00020000 }, +}; + +static const struct reg_entry rgb_disable[] = { + { DC_COM_PIN_OUTPUT_SELECT(6), 0x00000000 }, + { DC_COM_PIN_OUTPUT_SELECT(5), 0x00000000 }, + { DC_COM_PIN_OUTPUT_SELECT(4), 0x00000000 }, + { DC_COM_PIN_OUTPUT_SELECT(3), 0x00000000 }, + { DC_COM_PIN_OUTPUT_SELECT(2), 0x00000000 }, + { DC_COM_PIN_OUTPUT_SELECT(1), 0x00000000 }, + { DC_COM_PIN_OUTPUT_SELECT(0), 0x00000000 }, + { DC_COM_PIN_OUTPUT_DATA(3), 0xaaaaaaaa }, + { DC_COM_PIN_OUTPUT_DATA(2), 0xaaaaaaaa }, + { DC_COM_PIN_OUTPUT_DATA(1), 0xaaaaaaaa }, + { DC_COM_PIN_OUTPUT_DATA(0), 0xaaaaaaaa }, + { DC_COM_PIN_OUTPUT_POLARITY(3), 0x00000000 }, + { DC_COM_PIN_OUTPUT_POLARITY(2), 0x00000000 }, + { DC_COM_PIN_OUTPUT_POLARITY(1), 0x00000000 }, + { DC_COM_PIN_OUTPUT_POLARITY(0), 0x00000000 }, + { DC_COM_PIN_OUTPUT_ENABLE(3), 0x55555555 }, + { DC_COM_PIN_OUTPUT_ENABLE(2), 0x55555555 }, + { DC_COM_PIN_OUTPUT_ENABLE(1), 0x55150005 }, + { DC_COM_PIN_OUTPUT_ENABLE(0), 0x55555555 }, +}; + +static void tegra_dc_write_regs(struct tegra_dc *dc, + const struct reg_entry *table, + unsigned int num) +{ + unsigned int i; + + for (i = 0; i < num; i++) + tegra_dc_writel(dc, table[i].value, table[i].offset); +} + +static void tegra_rgb_encoder_disable(struct drm_encoder *encoder) +{ + struct tegra_output *output = encoder_to_output(encoder); + struct tegra_rgb *rgb = to_rgb(output); + + tegra_dc_write_regs(rgb->dc, rgb_disable, ARRAY_SIZE(rgb_disable)); + tegra_dc_commit(rgb->dc); +} + +static void tegra_rgb_encoder_enable(struct drm_encoder *encoder) +{ + struct tegra_output *output = encoder_to_output(encoder); + struct tegra_rgb *rgb = to_rgb(output); + u32 value; + + tegra_dc_write_regs(rgb->dc, rgb_enable, ARRAY_SIZE(rgb_enable)); + + value = DE_SELECT_ACTIVE | DE_CONTROL_NORMAL; + tegra_dc_writel(rgb->dc, value, DC_DISP_DATA_ENABLE_OPTIONS); + + /* XXX: parameterize? */ + value = tegra_dc_readl(rgb->dc, DC_COM_PIN_OUTPUT_POLARITY(1)); + value &= ~LVS_OUTPUT_POLARITY_LOW; + value &= ~LHS_OUTPUT_POLARITY_LOW; + tegra_dc_writel(rgb->dc, value, DC_COM_PIN_OUTPUT_POLARITY(1)); + + /* XXX: parameterize? */ + value = DISP_DATA_FORMAT_DF1P1C | DISP_ALIGNMENT_MSB | + DISP_ORDER_RED_BLUE; + tegra_dc_writel(rgb->dc, value, DC_DISP_DISP_INTERFACE_CONTROL); + + tegra_dc_commit(rgb->dc); +} + +static bool tegra_rgb_pll_rate_change_allowed(struct tegra_rgb *rgb) +{ + if (!rgb->pll_d2_out0) + return false; + + if (!clk_is_match(rgb->clk_parent, rgb->pll_d_out0) && + !clk_is_match(rgb->clk_parent, rgb->pll_d2_out0)) + return false; + + return true; +} + +static int +tegra_rgb_encoder_atomic_check(struct drm_encoder *encoder, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state) +{ + struct tegra_output *output = encoder_to_output(encoder); + struct tegra_dc *dc = to_tegra_dc(conn_state->crtc); + unsigned long pclk = crtc_state->mode.clock * 1000; + struct tegra_rgb *rgb = to_rgb(output); + unsigned int div; + int err; + + /* + * We may not want to change the frequency of the parent clock, since + * it may be a parent for other peripherals. This is due to the fact + * that on Tegra20 there's only a single clock dedicated to display + * (pll_d_out0), whereas later generations have a second one that can + * be used to independently drive a second output (pll_d2_out0). + * + * As a way to support multiple outputs on Tegra20 as well, pll_p is + * typically used as the parent clock for the display controllers. + * But this comes at a cost: pll_p is the parent of several other + * peripherals, so its frequency shouldn't change out of the blue. + * + * The best we can do at this point is to use the shift clock divider + * and hope that the desired frequency can be matched (or at least + * matched sufficiently close that the panel will still work). + */ + if (tegra_rgb_pll_rate_change_allowed(rgb)) { + /* + * Set display controller clock to x2 of PCLK in order to + * produce higher resolution pulse positions. + */ + div = 2; + pclk *= 2; + } else { + div = ((clk_get_rate(rgb->clk) * 2) / pclk) - 2; + pclk = 0; + } + + err = tegra_dc_state_setup_clock(dc, crtc_state, rgb->clk_parent, + pclk, div); + if (err < 0) { + dev_err(output->dev, "failed to setup CRTC state: %d\n", err); + return err; + } + + return err; +} + +static const struct drm_encoder_helper_funcs tegra_rgb_encoder_helper_funcs = { + .disable = tegra_rgb_encoder_disable, + .enable = tegra_rgb_encoder_enable, + .atomic_check = tegra_rgb_encoder_atomic_check, +}; + +int tegra_dc_rgb_probe(struct tegra_dc *dc) +{ + struct device_node *np; + struct tegra_rgb *rgb; + int err; + + np = of_get_child_by_name(dc->dev->of_node, "rgb"); + if (!np || !of_device_is_available(np)) + return -ENODEV; + + rgb = devm_kzalloc(dc->dev, sizeof(*rgb), GFP_KERNEL); + if (!rgb) + return -ENOMEM; + + rgb->output.dev = dc->dev; + rgb->output.of_node = np; + rgb->dc = dc; + + err = tegra_output_probe(&rgb->output); + if (err < 0) + return err; + + rgb->clk = devm_clk_get(dc->dev, NULL); + if (IS_ERR(rgb->clk)) { + dev_err(dc->dev, "failed to get clock\n"); + return PTR_ERR(rgb->clk); + } + + rgb->clk_parent = devm_clk_get(dc->dev, "parent"); + if (IS_ERR(rgb->clk_parent)) { + dev_err(dc->dev, "failed to get parent clock\n"); + return PTR_ERR(rgb->clk_parent); + } + + err = clk_set_parent(rgb->clk, rgb->clk_parent); + if (err < 0) { + dev_err(dc->dev, "failed to set parent clock: %d\n", err); + return err; + } + + rgb->pll_d_out0 = clk_get_sys(NULL, "pll_d_out0"); + if (IS_ERR(rgb->pll_d_out0)) { + err = PTR_ERR(rgb->pll_d_out0); + dev_err(dc->dev, "failed to get pll_d_out0: %d\n", err); + return err; + } + + if (dc->soc->has_pll_d2_out0) { + rgb->pll_d2_out0 = clk_get_sys(NULL, "pll_d2_out0"); + if (IS_ERR(rgb->pll_d2_out0)) { + err = PTR_ERR(rgb->pll_d2_out0); + dev_err(dc->dev, "failed to get pll_d2_out0: %d\n", err); + return err; + } + } + + dc->rgb = &rgb->output; + + return 0; +} + +int tegra_dc_rgb_remove(struct tegra_dc *dc) +{ + struct tegra_rgb *rgb; + + if (!dc->rgb) + return 0; + + rgb = to_rgb(dc->rgb); + clk_put(rgb->pll_d2_out0); + clk_put(rgb->pll_d_out0); + + tegra_output_remove(dc->rgb); + dc->rgb = NULL; + + return 0; +} + +int tegra_dc_rgb_init(struct drm_device *drm, struct tegra_dc *dc) +{ + struct tegra_output *output = dc->rgb; + struct drm_connector *connector; + int err; + + if (!dc->rgb) + return -ENODEV; + + drm_simple_encoder_init(drm, &output->encoder, DRM_MODE_ENCODER_LVDS); + drm_encoder_helper_add(&output->encoder, + &tegra_rgb_encoder_helper_funcs); + + /* + * Wrap directly-connected panel into DRM bridge in order to let + * DRM core to handle panel for us. + */ + if (output->panel) { + output->bridge = devm_drm_panel_bridge_add(output->dev, + output->panel); + if (IS_ERR(output->bridge)) { + dev_err(output->dev, + "failed to wrap panel into bridge: %pe\n", + output->bridge); + return PTR_ERR(output->bridge); + } + + output->panel = NULL; + } + + /* + * Tegra devices that have LVDS panel utilize LVDS encoder bridge + * for converting up to 28 LCD LVTTL lanes into 5/4 LVDS lanes that + * go to display panel's receiver. + * + * Encoder usually have a power-down control which needs to be enabled + * in order to transmit data to the panel. Historically devices that + * use an older device-tree version didn't model the bridge, assuming + * that encoder is turned ON by default, while today's DRM allows us + * to model LVDS encoder properly. + * + * Newer device-trees utilize LVDS encoder bridge, which provides + * us with a connector and handles the display panel. + * + * For older device-trees we wrapped panel into the panel-bridge. + */ + if (output->bridge) { + err = drm_bridge_attach(&output->encoder, output->bridge, + NULL, DRM_BRIDGE_ATTACH_NO_CONNECTOR); + if (err) + return err; + + connector = drm_bridge_connector_init(drm, &output->encoder); + if (IS_ERR(connector)) { + dev_err(output->dev, + "failed to initialize bridge connector: %pe\n", + connector); + return PTR_ERR(connector); + } + + drm_connector_attach_encoder(connector, &output->encoder); + } + + err = tegra_output_init(drm, output); + if (err < 0) { + dev_err(output->dev, "failed to initialize output: %d\n", err); + return err; + } + + /* + * Other outputs can be attached to either display controller. The RGB + * outputs are an exception and work only with their parent display + * controller. + */ + output->encoder.possible_crtcs = drm_crtc_mask(&dc->base); + + return 0; +} + +int tegra_dc_rgb_exit(struct tegra_dc *dc) +{ + if (dc->rgb) + tegra_output_exit(dc->rgb); + + return 0; +} -- cgit v1.2.3