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/msm/disp/mdp4/mdp4_lcdc_encoder.c | 445 ++++++++++++++++++++++ 1 file changed, 445 insertions(+) create mode 100644 drivers/gpu/drm/msm/disp/mdp4/mdp4_lcdc_encoder.c (limited to 'drivers/gpu/drm/msm/disp/mdp4/mdp4_lcdc_encoder.c') diff --git a/drivers/gpu/drm/msm/disp/mdp4/mdp4_lcdc_encoder.c b/drivers/gpu/drm/msm/disp/mdp4/mdp4_lcdc_encoder.c new file mode 100644 index 000000000..10eb3e5b2 --- /dev/null +++ b/drivers/gpu/drm/msm/disp/mdp4/mdp4_lcdc_encoder.c @@ -0,0 +1,445 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2014 Red Hat + * Author: Rob Clark + * Author: Vinay Simha + */ + +#include + +#include +#include + +#include "mdp4_kms.h" + +struct mdp4_lcdc_encoder { + struct drm_encoder base; + struct device_node *panel_node; + struct drm_panel *panel; + struct clk *lcdc_clk; + unsigned long int pixclock; + struct regulator *regs[3]; + bool enabled; + uint32_t bsc; +}; +#define to_mdp4_lcdc_encoder(x) container_of(x, struct mdp4_lcdc_encoder, base) + +static struct mdp4_kms *get_kms(struct drm_encoder *encoder) +{ + struct msm_drm_private *priv = encoder->dev->dev_private; + return to_mdp4_kms(to_mdp_kms(priv->kms)); +} + +static void mdp4_lcdc_encoder_destroy(struct drm_encoder *encoder) +{ + struct mdp4_lcdc_encoder *mdp4_lcdc_encoder = + to_mdp4_lcdc_encoder(encoder); + drm_encoder_cleanup(encoder); + kfree(mdp4_lcdc_encoder); +} + +static const struct drm_encoder_funcs mdp4_lcdc_encoder_funcs = { + .destroy = mdp4_lcdc_encoder_destroy, +}; + +/* this should probably be a helper: */ +static struct drm_connector *get_connector(struct drm_encoder *encoder) +{ + struct drm_device *dev = encoder->dev; + struct drm_connector *connector; + + list_for_each_entry(connector, &dev->mode_config.connector_list, head) + if (connector->encoder == encoder) + return connector; + + return NULL; +} + +static void setup_phy(struct drm_encoder *encoder) +{ + struct drm_device *dev = encoder->dev; + struct drm_connector *connector = get_connector(encoder); + struct mdp4_kms *mdp4_kms = get_kms(encoder); + uint32_t lvds_intf = 0, lvds_phy_cfg0 = 0; + int bpp, nchan, swap; + + if (!connector) + return; + + bpp = 3 * connector->display_info.bpc; + + if (!bpp) + bpp = 18; + + /* TODO, these should come from panel somehow: */ + nchan = 1; + swap = 0; + + switch (bpp) { + case 24: + mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_3_TO_0(0), + MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT0(0x08) | + MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT1(0x05) | + MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT2(0x04) | + MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT3(0x03)); + mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_6_TO_4(0), + MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT4(0x02) | + MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT5(0x01) | + MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT6(0x00)); + mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_3_TO_0(1), + MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT0(0x11) | + MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT1(0x10) | + MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT2(0x0d) | + MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT3(0x0c)); + mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_6_TO_4(1), + MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT4(0x0b) | + MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT5(0x0a) | + MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT6(0x09)); + mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_3_TO_0(2), + MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT0(0x1a) | + MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT1(0x19) | + MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT2(0x18) | + MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT3(0x15)); + mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_6_TO_4(2), + MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT4(0x14) | + MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT5(0x13) | + MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT6(0x12)); + mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_3_TO_0(3), + MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT0(0x1b) | + MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT1(0x17) | + MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT2(0x16) | + MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT3(0x0f)); + mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_6_TO_4(3), + MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT4(0x0e) | + MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT5(0x07) | + MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT6(0x06)); + if (nchan == 2) { + lvds_intf |= MDP4_LCDC_LVDS_INTF_CTL_CH2_DATA_LANE3_EN | + MDP4_LCDC_LVDS_INTF_CTL_CH2_DATA_LANE2_EN | + MDP4_LCDC_LVDS_INTF_CTL_CH2_DATA_LANE1_EN | + MDP4_LCDC_LVDS_INTF_CTL_CH2_DATA_LANE0_EN | + MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE3_EN | + MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE2_EN | + MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE1_EN | + MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE0_EN; + } else { + lvds_intf |= MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE3_EN | + MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE2_EN | + MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE1_EN | + MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE0_EN; + } + break; + + case 18: + mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_3_TO_0(0), + MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT0(0x0a) | + MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT1(0x07) | + MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT2(0x06) | + MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT3(0x05)); + mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_6_TO_4(0), + MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT4(0x04) | + MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT5(0x03) | + MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT6(0x02)); + mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_3_TO_0(1), + MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT0(0x13) | + MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT1(0x12) | + MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT2(0x0f) | + MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT3(0x0e)); + mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_6_TO_4(1), + MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT4(0x0d) | + MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT5(0x0c) | + MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT6(0x0b)); + mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_3_TO_0(2), + MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT0(0x1a) | + MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT1(0x19) | + MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT2(0x18) | + MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT3(0x17)); + mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_6_TO_4(2), + MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT4(0x16) | + MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT5(0x15) | + MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT6(0x14)); + if (nchan == 2) { + lvds_intf |= MDP4_LCDC_LVDS_INTF_CTL_CH2_DATA_LANE2_EN | + MDP4_LCDC_LVDS_INTF_CTL_CH2_DATA_LANE1_EN | + MDP4_LCDC_LVDS_INTF_CTL_CH2_DATA_LANE0_EN | + MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE2_EN | + MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE1_EN | + MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE0_EN; + } else { + lvds_intf |= MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE2_EN | + MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE1_EN | + MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE0_EN; + } + lvds_intf |= MDP4_LCDC_LVDS_INTF_CTL_RGB_OUT; + break; + + default: + DRM_DEV_ERROR(dev->dev, "unknown bpp: %d\n", bpp); + return; + } + + switch (nchan) { + case 1: + lvds_phy_cfg0 = MDP4_LVDS_PHY_CFG0_CHANNEL0; + lvds_intf |= MDP4_LCDC_LVDS_INTF_CTL_CH1_CLK_LANE_EN | + MDP4_LCDC_LVDS_INTF_CTL_MODE_SEL; + break; + case 2: + lvds_phy_cfg0 = MDP4_LVDS_PHY_CFG0_CHANNEL0 | + MDP4_LVDS_PHY_CFG0_CHANNEL1; + lvds_intf |= MDP4_LCDC_LVDS_INTF_CTL_CH2_CLK_LANE_EN | + MDP4_LCDC_LVDS_INTF_CTL_CH1_CLK_LANE_EN; + break; + default: + DRM_DEV_ERROR(dev->dev, "unknown # of channels: %d\n", nchan); + return; + } + + if (swap) + lvds_intf |= MDP4_LCDC_LVDS_INTF_CTL_CH_SWAP; + + lvds_intf |= MDP4_LCDC_LVDS_INTF_CTL_ENABLE; + + mdp4_write(mdp4_kms, REG_MDP4_LVDS_PHY_CFG0, lvds_phy_cfg0); + mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_INTF_CTL, lvds_intf); + mdp4_write(mdp4_kms, REG_MDP4_LVDS_PHY_CFG2, 0x30); + + mb(); + udelay(1); + lvds_phy_cfg0 |= MDP4_LVDS_PHY_CFG0_SERIALIZATION_ENBLE; + mdp4_write(mdp4_kms, REG_MDP4_LVDS_PHY_CFG0, lvds_phy_cfg0); +} + +static void mdp4_lcdc_encoder_mode_set(struct drm_encoder *encoder, + struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ + struct mdp4_lcdc_encoder *mdp4_lcdc_encoder = + to_mdp4_lcdc_encoder(encoder); + struct mdp4_kms *mdp4_kms = get_kms(encoder); + uint32_t lcdc_hsync_skew, vsync_period, vsync_len, ctrl_pol; + uint32_t display_v_start, display_v_end; + uint32_t hsync_start_x, hsync_end_x; + + mode = adjusted_mode; + + DBG("set mode: " DRM_MODE_FMT, DRM_MODE_ARG(mode)); + + mdp4_lcdc_encoder->pixclock = mode->clock * 1000; + + DBG("pixclock=%lu", mdp4_lcdc_encoder->pixclock); + + ctrl_pol = 0; + if (mode->flags & DRM_MODE_FLAG_NHSYNC) + ctrl_pol |= MDP4_LCDC_CTRL_POLARITY_HSYNC_LOW; + if (mode->flags & DRM_MODE_FLAG_NVSYNC) + ctrl_pol |= MDP4_LCDC_CTRL_POLARITY_VSYNC_LOW; + /* probably need to get DATA_EN polarity from panel.. */ + + lcdc_hsync_skew = 0; /* get this from panel? */ + + hsync_start_x = (mode->htotal - mode->hsync_start); + hsync_end_x = mode->htotal - (mode->hsync_start - mode->hdisplay) - 1; + + vsync_period = mode->vtotal * mode->htotal; + vsync_len = (mode->vsync_end - mode->vsync_start) * mode->htotal; + display_v_start = (mode->vtotal - mode->vsync_start) * mode->htotal + lcdc_hsync_skew; + display_v_end = vsync_period - ((mode->vsync_start - mode->vdisplay) * mode->htotal) + lcdc_hsync_skew - 1; + + mdp4_write(mdp4_kms, REG_MDP4_LCDC_HSYNC_CTRL, + MDP4_LCDC_HSYNC_CTRL_PULSEW(mode->hsync_end - mode->hsync_start) | + MDP4_LCDC_HSYNC_CTRL_PERIOD(mode->htotal)); + mdp4_write(mdp4_kms, REG_MDP4_LCDC_VSYNC_PERIOD, vsync_period); + mdp4_write(mdp4_kms, REG_MDP4_LCDC_VSYNC_LEN, vsync_len); + mdp4_write(mdp4_kms, REG_MDP4_LCDC_DISPLAY_HCTRL, + MDP4_LCDC_DISPLAY_HCTRL_START(hsync_start_x) | + MDP4_LCDC_DISPLAY_HCTRL_END(hsync_end_x)); + mdp4_write(mdp4_kms, REG_MDP4_LCDC_DISPLAY_VSTART, display_v_start); + mdp4_write(mdp4_kms, REG_MDP4_LCDC_DISPLAY_VEND, display_v_end); + mdp4_write(mdp4_kms, REG_MDP4_LCDC_BORDER_CLR, 0); + mdp4_write(mdp4_kms, REG_MDP4_LCDC_UNDERFLOW_CLR, + MDP4_LCDC_UNDERFLOW_CLR_ENABLE_RECOVERY | + MDP4_LCDC_UNDERFLOW_CLR_COLOR(0xff)); + mdp4_write(mdp4_kms, REG_MDP4_LCDC_HSYNC_SKEW, lcdc_hsync_skew); + mdp4_write(mdp4_kms, REG_MDP4_LCDC_CTRL_POLARITY, ctrl_pol); + mdp4_write(mdp4_kms, REG_MDP4_LCDC_ACTIVE_HCTL, + MDP4_LCDC_ACTIVE_HCTL_START(0) | + MDP4_LCDC_ACTIVE_HCTL_END(0)); + mdp4_write(mdp4_kms, REG_MDP4_LCDC_ACTIVE_VSTART, 0); + mdp4_write(mdp4_kms, REG_MDP4_LCDC_ACTIVE_VEND, 0); +} + +static void mdp4_lcdc_encoder_disable(struct drm_encoder *encoder) +{ + struct drm_device *dev = encoder->dev; + struct mdp4_lcdc_encoder *mdp4_lcdc_encoder = + to_mdp4_lcdc_encoder(encoder); + struct mdp4_kms *mdp4_kms = get_kms(encoder); + struct drm_panel *panel; + int i, ret; + + if (WARN_ON(!mdp4_lcdc_encoder->enabled)) + return; + + mdp4_write(mdp4_kms, REG_MDP4_LCDC_ENABLE, 0); + + panel = of_drm_find_panel(mdp4_lcdc_encoder->panel_node); + if (!IS_ERR(panel)) { + drm_panel_disable(panel); + drm_panel_unprepare(panel); + } + + /* + * Wait for a vsync so we know the ENABLE=0 latched before + * the (connector) source of the vsync's gets disabled, + * otherwise we end up in a funny state if we re-enable + * before the disable latches, which results that some of + * the settings changes for the new modeset (like new + * scanout buffer) don't latch properly.. + */ + mdp_irq_wait(&mdp4_kms->base, MDP4_IRQ_PRIMARY_VSYNC); + + clk_disable_unprepare(mdp4_lcdc_encoder->lcdc_clk); + + for (i = 0; i < ARRAY_SIZE(mdp4_lcdc_encoder->regs); i++) { + ret = regulator_disable(mdp4_lcdc_encoder->regs[i]); + if (ret) + DRM_DEV_ERROR(dev->dev, "failed to disable regulator: %d\n", ret); + } + + mdp4_lcdc_encoder->enabled = false; +} + +static void mdp4_lcdc_encoder_enable(struct drm_encoder *encoder) +{ + struct drm_device *dev = encoder->dev; + struct mdp4_lcdc_encoder *mdp4_lcdc_encoder = + to_mdp4_lcdc_encoder(encoder); + unsigned long pc = mdp4_lcdc_encoder->pixclock; + struct mdp4_kms *mdp4_kms = get_kms(encoder); + struct drm_panel *panel; + uint32_t config; + int i, ret; + + if (WARN_ON(mdp4_lcdc_encoder->enabled)) + return; + + /* TODO: hard-coded for 18bpp: */ + config = + MDP4_DMA_CONFIG_R_BPC(BPC6) | + MDP4_DMA_CONFIG_G_BPC(BPC6) | + MDP4_DMA_CONFIG_B_BPC(BPC6) | + MDP4_DMA_CONFIG_PACK(0x21) | + MDP4_DMA_CONFIG_DEFLKR_EN | + MDP4_DMA_CONFIG_DITHER_EN; + + if (!of_property_read_bool(dev->dev->of_node, "qcom,lcdc-align-lsb")) + config |= MDP4_DMA_CONFIG_PACK_ALIGN_MSB; + + mdp4_crtc_set_config(encoder->crtc, config); + mdp4_crtc_set_intf(encoder->crtc, INTF_LCDC_DTV, 0); + + for (i = 0; i < ARRAY_SIZE(mdp4_lcdc_encoder->regs); i++) { + ret = regulator_enable(mdp4_lcdc_encoder->regs[i]); + if (ret) + DRM_DEV_ERROR(dev->dev, "failed to enable regulator: %d\n", ret); + } + + DBG("setting lcdc_clk=%lu", pc); + ret = clk_set_rate(mdp4_lcdc_encoder->lcdc_clk, pc); + if (ret) + DRM_DEV_ERROR(dev->dev, "failed to configure lcdc_clk: %d\n", ret); + ret = clk_prepare_enable(mdp4_lcdc_encoder->lcdc_clk); + if (ret) + DRM_DEV_ERROR(dev->dev, "failed to enable lcdc_clk: %d\n", ret); + + panel = of_drm_find_panel(mdp4_lcdc_encoder->panel_node); + if (!IS_ERR(panel)) { + drm_panel_prepare(panel); + drm_panel_enable(panel); + } + + setup_phy(encoder); + + mdp4_write(mdp4_kms, REG_MDP4_LCDC_ENABLE, 1); + + mdp4_lcdc_encoder->enabled = true; +} + +static const struct drm_encoder_helper_funcs mdp4_lcdc_encoder_helper_funcs = { + .mode_set = mdp4_lcdc_encoder_mode_set, + .disable = mdp4_lcdc_encoder_disable, + .enable = mdp4_lcdc_encoder_enable, +}; + +long mdp4_lcdc_round_pixclk(struct drm_encoder *encoder, unsigned long rate) +{ + struct mdp4_lcdc_encoder *mdp4_lcdc_encoder = + to_mdp4_lcdc_encoder(encoder); + return clk_round_rate(mdp4_lcdc_encoder->lcdc_clk, rate); +} + +/* initialize encoder */ +struct drm_encoder *mdp4_lcdc_encoder_init(struct drm_device *dev, + struct device_node *panel_node) +{ + struct drm_encoder *encoder = NULL; + struct mdp4_lcdc_encoder *mdp4_lcdc_encoder; + struct regulator *reg; + int ret; + + mdp4_lcdc_encoder = kzalloc(sizeof(*mdp4_lcdc_encoder), GFP_KERNEL); + if (!mdp4_lcdc_encoder) { + ret = -ENOMEM; + goto fail; + } + + mdp4_lcdc_encoder->panel_node = panel_node; + + encoder = &mdp4_lcdc_encoder->base; + + drm_encoder_init(dev, encoder, &mdp4_lcdc_encoder_funcs, + DRM_MODE_ENCODER_LVDS, NULL); + drm_encoder_helper_add(encoder, &mdp4_lcdc_encoder_helper_funcs); + + /* TODO: do we need different pll in other cases? */ + mdp4_lcdc_encoder->lcdc_clk = mpd4_lvds_pll_init(dev); + if (IS_ERR(mdp4_lcdc_encoder->lcdc_clk)) { + DRM_DEV_ERROR(dev->dev, "failed to get lvds_clk\n"); + ret = PTR_ERR(mdp4_lcdc_encoder->lcdc_clk); + goto fail; + } + + /* TODO: different regulators in other cases? */ + reg = devm_regulator_get(dev->dev, "lvds-vccs-3p3v"); + if (IS_ERR(reg)) { + ret = PTR_ERR(reg); + DRM_DEV_ERROR(dev->dev, "failed to get lvds-vccs-3p3v: %d\n", ret); + goto fail; + } + mdp4_lcdc_encoder->regs[0] = reg; + + reg = devm_regulator_get(dev->dev, "lvds-pll-vdda"); + if (IS_ERR(reg)) { + ret = PTR_ERR(reg); + DRM_DEV_ERROR(dev->dev, "failed to get lvds-pll-vdda: %d\n", ret); + goto fail; + } + mdp4_lcdc_encoder->regs[1] = reg; + + reg = devm_regulator_get(dev->dev, "lvds-vdda"); + if (IS_ERR(reg)) { + ret = PTR_ERR(reg); + DRM_DEV_ERROR(dev->dev, "failed to get lvds-vdda: %d\n", ret); + goto fail; + } + mdp4_lcdc_encoder->regs[2] = reg; + + return encoder; + +fail: + if (encoder) + mdp4_lcdc_encoder_destroy(encoder); + + return ERR_PTR(ret); +} -- cgit v1.2.3