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/tilcdc/tilcdc_drv.c | 627 ++++++++++++++++++++++++++++++++++++ 1 file changed, 627 insertions(+) create mode 100644 drivers/gpu/drm/tilcdc/tilcdc_drv.c (limited to 'drivers/gpu/drm/tilcdc/tilcdc_drv.c') diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c b/drivers/gpu/drm/tilcdc/tilcdc_drv.c new file mode 100644 index 000000000..80615ecda --- /dev/null +++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c @@ -0,0 +1,627 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2012 Texas Instruments + * Author: Rob Clark + */ + +/* LCDC DRM driver, based on da8xx-fb */ + +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + + +#include "tilcdc_drv.h" +#include "tilcdc_external.h" +#include "tilcdc_panel.h" +#include "tilcdc_regs.h" + +static LIST_HEAD(module_list); + +static const u32 tilcdc_rev1_formats[] = { DRM_FORMAT_RGB565 }; + +static const u32 tilcdc_straight_formats[] = { DRM_FORMAT_RGB565, + DRM_FORMAT_BGR888, + DRM_FORMAT_XBGR8888 }; + +static const u32 tilcdc_crossed_formats[] = { DRM_FORMAT_BGR565, + DRM_FORMAT_RGB888, + DRM_FORMAT_XRGB8888 }; + +static const u32 tilcdc_legacy_formats[] = { DRM_FORMAT_RGB565, + DRM_FORMAT_RGB888, + DRM_FORMAT_XRGB8888 }; + +void tilcdc_module_init(struct tilcdc_module *mod, const char *name, + const struct tilcdc_module_ops *funcs) +{ + mod->name = name; + mod->funcs = funcs; + INIT_LIST_HEAD(&mod->list); + list_add(&mod->list, &module_list); +} + +void tilcdc_module_cleanup(struct tilcdc_module *mod) +{ + list_del(&mod->list); +} + +static int tilcdc_atomic_check(struct drm_device *dev, + struct drm_atomic_state *state) +{ + int ret; + + ret = drm_atomic_helper_check_modeset(dev, state); + if (ret) + return ret; + + ret = drm_atomic_helper_check_planes(dev, state); + if (ret) + return ret; + + /* + * tilcdc ->atomic_check can update ->mode_changed if pixel format + * changes, hence will we check modeset changes again. + */ + ret = drm_atomic_helper_check_modeset(dev, state); + if (ret) + return ret; + + return ret; +} + +static const struct drm_mode_config_funcs mode_config_funcs = { + .fb_create = drm_gem_fb_create, + .atomic_check = tilcdc_atomic_check, + .atomic_commit = drm_atomic_helper_commit, +}; + +static void modeset_init(struct drm_device *dev) +{ + struct tilcdc_drm_private *priv = dev->dev_private; + struct tilcdc_module *mod; + + list_for_each_entry(mod, &module_list, list) { + DBG("loading module: %s", mod->name); + mod->funcs->modeset_init(mod, dev); + } + + dev->mode_config.min_width = 0; + dev->mode_config.min_height = 0; + dev->mode_config.max_width = priv->max_width; + dev->mode_config.max_height = 2048; + dev->mode_config.funcs = &mode_config_funcs; +} + +#ifdef CONFIG_CPU_FREQ +static int cpufreq_transition(struct notifier_block *nb, + unsigned long val, void *data) +{ + struct tilcdc_drm_private *priv = container_of(nb, + struct tilcdc_drm_private, freq_transition); + + if (val == CPUFREQ_POSTCHANGE) + tilcdc_crtc_update_clk(priv->crtc); + + return 0; +} +#endif + +static irqreturn_t tilcdc_irq(int irq, void *arg) +{ + struct drm_device *dev = arg; + struct tilcdc_drm_private *priv = dev->dev_private; + + return tilcdc_crtc_irq(priv->crtc); +} + +static int tilcdc_irq_install(struct drm_device *dev, unsigned int irq) +{ + struct tilcdc_drm_private *priv = dev->dev_private; + int ret; + + ret = request_irq(irq, tilcdc_irq, 0, dev->driver->name, dev); + if (ret) + return ret; + + priv->irq_enabled = false; + + return 0; +} + +static void tilcdc_irq_uninstall(struct drm_device *dev) +{ + struct tilcdc_drm_private *priv = dev->dev_private; + + if (!priv->irq_enabled) + return; + + free_irq(priv->irq, dev); + priv->irq_enabled = false; +} + +/* + * DRM operations: + */ + +static void tilcdc_fini(struct drm_device *dev) +{ + struct tilcdc_drm_private *priv = dev->dev_private; + +#ifdef CONFIG_CPU_FREQ + if (priv->freq_transition.notifier_call) + cpufreq_unregister_notifier(&priv->freq_transition, + CPUFREQ_TRANSITION_NOTIFIER); +#endif + + if (priv->crtc) + tilcdc_crtc_shutdown(priv->crtc); + + if (priv->is_registered) + drm_dev_unregister(dev); + + drm_kms_helper_poll_fini(dev); + tilcdc_irq_uninstall(dev); + drm_mode_config_cleanup(dev); + + if (priv->clk) + clk_put(priv->clk); + + if (priv->mmio) + iounmap(priv->mmio); + + if (priv->wq) + destroy_workqueue(priv->wq); + + dev->dev_private = NULL; + + pm_runtime_disable(dev->dev); + + drm_dev_put(dev); +} + +static int tilcdc_init(const struct drm_driver *ddrv, struct device *dev) +{ + struct drm_device *ddev; + struct platform_device *pdev = to_platform_device(dev); + struct device_node *node = dev->of_node; + struct tilcdc_drm_private *priv; + struct resource *res; + u32 bpp = 0; + int ret; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + ddev = drm_dev_alloc(ddrv, dev); + if (IS_ERR(ddev)) + return PTR_ERR(ddev); + + ddev->dev_private = priv; + platform_set_drvdata(pdev, ddev); + drm_mode_config_init(ddev); + + priv->is_componentized = + tilcdc_get_external_components(dev, NULL) > 0; + + priv->wq = alloc_ordered_workqueue("tilcdc", 0); + if (!priv->wq) { + ret = -ENOMEM; + goto init_failed; + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(dev, "failed to get memory resource\n"); + ret = -EINVAL; + goto init_failed; + } + + priv->mmio = ioremap(res->start, resource_size(res)); + if (!priv->mmio) { + dev_err(dev, "failed to ioremap\n"); + ret = -ENOMEM; + goto init_failed; + } + + priv->clk = clk_get(dev, "fck"); + if (IS_ERR(priv->clk)) { + dev_err(dev, "failed to get functional clock\n"); + ret = -ENODEV; + goto init_failed; + } + + pm_runtime_enable(dev); + + /* Determine LCD IP Version */ + pm_runtime_get_sync(dev); + switch (tilcdc_read(ddev, LCDC_PID_REG)) { + case 0x4c100102: + priv->rev = 1; + break; + case 0x4f200800: + case 0x4f201000: + priv->rev = 2; + break; + default: + dev_warn(dev, "Unknown PID Reg value 0x%08x, " + "defaulting to LCD revision 1\n", + tilcdc_read(ddev, LCDC_PID_REG)); + priv->rev = 1; + break; + } + + pm_runtime_put_sync(dev); + + if (priv->rev == 1) { + DBG("Revision 1 LCDC supports only RGB565 format"); + priv->pixelformats = tilcdc_rev1_formats; + priv->num_pixelformats = ARRAY_SIZE(tilcdc_rev1_formats); + bpp = 16; + } else { + const char *str = "\0"; + + of_property_read_string(node, "blue-and-red-wiring", &str); + if (0 == strcmp(str, "crossed")) { + DBG("Configured for crossed blue and red wires"); + priv->pixelformats = tilcdc_crossed_formats; + priv->num_pixelformats = + ARRAY_SIZE(tilcdc_crossed_formats); + bpp = 32; /* Choose bpp with RGB support for fbdef */ + } else if (0 == strcmp(str, "straight")) { + DBG("Configured for straight blue and red wires"); + priv->pixelformats = tilcdc_straight_formats; + priv->num_pixelformats = + ARRAY_SIZE(tilcdc_straight_formats); + bpp = 16; /* Choose bpp with RGB support for fbdef */ + } else { + DBG("Blue and red wiring '%s' unknown, use legacy mode", + str); + priv->pixelformats = tilcdc_legacy_formats; + priv->num_pixelformats = + ARRAY_SIZE(tilcdc_legacy_formats); + bpp = 16; /* This is just a guess */ + } + } + + if (of_property_read_u32(node, "max-bandwidth", &priv->max_bandwidth)) + priv->max_bandwidth = TILCDC_DEFAULT_MAX_BANDWIDTH; + + DBG("Maximum Bandwidth Value %d", priv->max_bandwidth); + + if (of_property_read_u32(node, "max-width", &priv->max_width)) { + if (priv->rev == 1) + priv->max_width = TILCDC_DEFAULT_MAX_WIDTH_V1; + else + priv->max_width = TILCDC_DEFAULT_MAX_WIDTH_V2; + } + + DBG("Maximum Horizontal Pixel Width Value %dpixels", priv->max_width); + + if (of_property_read_u32(node, "max-pixelclock", + &priv->max_pixelclock)) + priv->max_pixelclock = TILCDC_DEFAULT_MAX_PIXELCLOCK; + + DBG("Maximum Pixel Clock Value %dKHz", priv->max_pixelclock); + + ret = tilcdc_crtc_create(ddev); + if (ret < 0) { + dev_err(dev, "failed to create crtc\n"); + goto init_failed; + } + modeset_init(ddev); + +#ifdef CONFIG_CPU_FREQ + priv->freq_transition.notifier_call = cpufreq_transition; + ret = cpufreq_register_notifier(&priv->freq_transition, + CPUFREQ_TRANSITION_NOTIFIER); + if (ret) { + dev_err(dev, "failed to register cpufreq notifier\n"); + priv->freq_transition.notifier_call = NULL; + goto init_failed; + } +#endif + + if (priv->is_componentized) { + ret = component_bind_all(dev, ddev); + if (ret < 0) + goto init_failed; + + ret = tilcdc_add_component_encoder(ddev); + if (ret < 0) + goto init_failed; + } else { + ret = tilcdc_attach_external_device(ddev); + if (ret) + goto init_failed; + } + + if (!priv->external_connector && + ((priv->num_encoders == 0) || (priv->num_connectors == 0))) { + dev_err(dev, "no encoders/connectors found\n"); + ret = -EPROBE_DEFER; + goto init_failed; + } + + ret = drm_vblank_init(ddev, 1); + if (ret < 0) { + dev_err(dev, "failed to initialize vblank\n"); + goto init_failed; + } + + ret = platform_get_irq(pdev, 0); + if (ret < 0) + goto init_failed; + priv->irq = ret; + + ret = tilcdc_irq_install(ddev, priv->irq); + if (ret < 0) { + dev_err(dev, "failed to install IRQ handler\n"); + goto init_failed; + } + + drm_mode_config_reset(ddev); + + drm_kms_helper_poll_init(ddev); + + ret = drm_dev_register(ddev, 0); + if (ret) + goto init_failed; + priv->is_registered = true; + + drm_fbdev_generic_setup(ddev, bpp); + return 0; + +init_failed: + tilcdc_fini(ddev); + + return ret; +} + +#if defined(CONFIG_DEBUG_FS) +static const struct { + const char *name; + uint8_t rev; + uint8_t save; + uint32_t reg; +} registers[] = { +#define REG(rev, save, reg) { #reg, rev, save, reg } + /* exists in revision 1: */ + REG(1, false, LCDC_PID_REG), + REG(1, true, LCDC_CTRL_REG), + REG(1, false, LCDC_STAT_REG), + REG(1, true, LCDC_RASTER_CTRL_REG), + REG(1, true, LCDC_RASTER_TIMING_0_REG), + REG(1, true, LCDC_RASTER_TIMING_1_REG), + REG(1, true, LCDC_RASTER_TIMING_2_REG), + REG(1, true, LCDC_DMA_CTRL_REG), + REG(1, true, LCDC_DMA_FB_BASE_ADDR_0_REG), + REG(1, true, LCDC_DMA_FB_CEILING_ADDR_0_REG), + REG(1, true, LCDC_DMA_FB_BASE_ADDR_1_REG), + REG(1, true, LCDC_DMA_FB_CEILING_ADDR_1_REG), + /* new in revision 2: */ + REG(2, false, LCDC_RAW_STAT_REG), + REG(2, false, LCDC_MASKED_STAT_REG), + REG(2, true, LCDC_INT_ENABLE_SET_REG), + REG(2, false, LCDC_INT_ENABLE_CLR_REG), + REG(2, false, LCDC_END_OF_INT_IND_REG), + REG(2, true, LCDC_CLK_ENABLE_REG), +#undef REG +}; + +#endif + +#ifdef CONFIG_DEBUG_FS +static int tilcdc_regs_show(struct seq_file *m, void *arg) +{ + struct drm_info_node *node = (struct drm_info_node *) m->private; + struct drm_device *dev = node->minor->dev; + struct tilcdc_drm_private *priv = dev->dev_private; + unsigned i; + + pm_runtime_get_sync(dev->dev); + + seq_printf(m, "revision: %d\n", priv->rev); + + for (i = 0; i < ARRAY_SIZE(registers); i++) + if (priv->rev >= registers[i].rev) + seq_printf(m, "%s:\t %08x\n", registers[i].name, + tilcdc_read(dev, registers[i].reg)); + + pm_runtime_put_sync(dev->dev); + + return 0; +} + +static int tilcdc_mm_show(struct seq_file *m, void *arg) +{ + struct drm_info_node *node = (struct drm_info_node *) m->private; + struct drm_device *dev = node->minor->dev; + struct drm_printer p = drm_seq_file_printer(m); + drm_mm_print(&dev->vma_offset_manager->vm_addr_space_mm, &p); + return 0; +} + +static struct drm_info_list tilcdc_debugfs_list[] = { + { "regs", tilcdc_regs_show, 0, NULL }, + { "mm", tilcdc_mm_show, 0, NULL }, +}; + +static void tilcdc_debugfs_init(struct drm_minor *minor) +{ + struct tilcdc_module *mod; + + drm_debugfs_create_files(tilcdc_debugfs_list, + ARRAY_SIZE(tilcdc_debugfs_list), + minor->debugfs_root, minor); + + list_for_each_entry(mod, &module_list, list) + if (mod->funcs->debugfs_init) + mod->funcs->debugfs_init(mod, minor); +} +#endif + +DEFINE_DRM_GEM_DMA_FOPS(fops); + +static const struct drm_driver tilcdc_driver = { + .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC, + DRM_GEM_DMA_DRIVER_OPS, +#ifdef CONFIG_DEBUG_FS + .debugfs_init = tilcdc_debugfs_init, +#endif + .fops = &fops, + .name = "tilcdc", + .desc = "TI LCD Controller DRM", + .date = "20121205", + .major = 1, + .minor = 0, +}; + +/* + * Power management: + */ + +#ifdef CONFIG_PM_SLEEP +static int tilcdc_pm_suspend(struct device *dev) +{ + struct drm_device *ddev = dev_get_drvdata(dev); + int ret = 0; + + ret = drm_mode_config_helper_suspend(ddev); + + /* Select sleep pin state */ + pinctrl_pm_select_sleep_state(dev); + + return ret; +} + +static int tilcdc_pm_resume(struct device *dev) +{ + struct drm_device *ddev = dev_get_drvdata(dev); + + /* Select default pin state */ + pinctrl_pm_select_default_state(dev); + return drm_mode_config_helper_resume(ddev); +} +#endif + +static const struct dev_pm_ops tilcdc_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(tilcdc_pm_suspend, tilcdc_pm_resume) +}; + +/* + * Platform driver: + */ +static int tilcdc_bind(struct device *dev) +{ + return tilcdc_init(&tilcdc_driver, dev); +} + +static void tilcdc_unbind(struct device *dev) +{ + struct drm_device *ddev = dev_get_drvdata(dev); + + /* Check if a subcomponent has already triggered the unloading. */ + if (!ddev->dev_private) + return; + + tilcdc_fini(dev_get_drvdata(dev)); +} + +static const struct component_master_ops tilcdc_comp_ops = { + .bind = tilcdc_bind, + .unbind = tilcdc_unbind, +}; + +static int tilcdc_pdev_probe(struct platform_device *pdev) +{ + struct component_match *match = NULL; + int ret; + + /* bail out early if no DT data: */ + if (!pdev->dev.of_node) { + dev_err(&pdev->dev, "device-tree data is missing\n"); + return -ENXIO; + } + + ret = tilcdc_get_external_components(&pdev->dev, &match); + if (ret < 0) + return ret; + else if (ret == 0) + return tilcdc_init(&tilcdc_driver, &pdev->dev); + else + return component_master_add_with_match(&pdev->dev, + &tilcdc_comp_ops, + match); +} + +static int tilcdc_pdev_remove(struct platform_device *pdev) +{ + int ret; + + ret = tilcdc_get_external_components(&pdev->dev, NULL); + if (ret < 0) + return ret; + else if (ret == 0) + tilcdc_fini(platform_get_drvdata(pdev)); + else + component_master_del(&pdev->dev, &tilcdc_comp_ops); + + return 0; +} + +static const struct of_device_id tilcdc_of_match[] = { + { .compatible = "ti,am33xx-tilcdc", }, + { .compatible = "ti,da850-tilcdc", }, + { }, +}; +MODULE_DEVICE_TABLE(of, tilcdc_of_match); + +static struct platform_driver tilcdc_platform_driver = { + .probe = tilcdc_pdev_probe, + .remove = tilcdc_pdev_remove, + .driver = { + .name = "tilcdc", + .pm = &tilcdc_pm_ops, + .of_match_table = tilcdc_of_match, + }, +}; + +static int __init tilcdc_drm_init(void) +{ + if (drm_firmware_drivers_only()) + return -ENODEV; + + DBG("init"); + tilcdc_panel_init(); + return platform_driver_register(&tilcdc_platform_driver); +} + +static void __exit tilcdc_drm_fini(void) +{ + DBG("fini"); + platform_driver_unregister(&tilcdc_platform_driver); + tilcdc_panel_fini(); +} + +module_init(tilcdc_drm_init); +module_exit(tilcdc_drm_fini); + +MODULE_AUTHOR("Rob Clark