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/rockchip/rockchip_lvds.c | 759 +++++++++++++++++++++++++++++++ 1 file changed, 759 insertions(+) create mode 100644 drivers/gpu/drm/rockchip/rockchip_lvds.c (limited to 'drivers/gpu/drm/rockchip/rockchip_lvds.c') diff --git a/drivers/gpu/drm/rockchip/rockchip_lvds.c b/drivers/gpu/drm/rockchip/rockchip_lvds.c new file mode 100644 index 000000000..68f6ebb33 --- /dev/null +++ b/drivers/gpu/drm/rockchip/rockchip_lvds.c @@ -0,0 +1,759 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd + * Author: + * Mark Yao + * Sandy Huang + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "rockchip_drm_drv.h" +#include "rockchip_drm_vop.h" +#include "rockchip_lvds.h" + +#define DISPLAY_OUTPUT_RGB 0 +#define DISPLAY_OUTPUT_LVDS 1 +#define DISPLAY_OUTPUT_DUAL_LVDS 2 + +struct rockchip_lvds; + +/** + * struct rockchip_lvds_soc_data - rockchip lvds Soc private data + * @probe: LVDS platform probe function + * @helper_funcs: LVDS connector helper functions + */ +struct rockchip_lvds_soc_data { + int (*probe)(struct platform_device *pdev, struct rockchip_lvds *lvds); + const struct drm_encoder_helper_funcs *helper_funcs; +}; + +struct rockchip_lvds { + struct device *dev; + void __iomem *regs; + struct regmap *grf; + struct clk *pclk; + struct phy *dphy; + const struct rockchip_lvds_soc_data *soc_data; + int output; /* rgb lvds or dual lvds output */ + int format; /* vesa or jeida format */ + struct drm_device *drm_dev; + struct drm_panel *panel; + struct drm_bridge *bridge; + struct drm_connector connector; + struct rockchip_encoder encoder; + struct dev_pin_info *pins; +}; + +static inline struct rockchip_lvds *connector_to_lvds(struct drm_connector *connector) +{ + return container_of(connector, struct rockchip_lvds, connector); +} + +static inline struct rockchip_lvds *encoder_to_lvds(struct drm_encoder *encoder) +{ + struct rockchip_encoder *rkencoder = to_rockchip_encoder(encoder); + + return container_of(rkencoder, struct rockchip_lvds, encoder); +} + +static inline void rk3288_writel(struct rockchip_lvds *lvds, u32 offset, + u32 val) +{ + writel_relaxed(val, lvds->regs + offset); + if (lvds->output == DISPLAY_OUTPUT_LVDS) + return; + writel_relaxed(val, lvds->regs + offset + RK3288_LVDS_CH1_OFFSET); +} + +static inline int rockchip_lvds_name_to_format(const char *s) +{ + if (strncmp(s, "jeida-18", 8) == 0) + return LVDS_JEIDA_18; + else if (strncmp(s, "jeida-24", 8) == 0) + return LVDS_JEIDA_24; + else if (strncmp(s, "vesa-24", 7) == 0) + return LVDS_VESA_24; + + return -EINVAL; +} + +static inline int rockchip_lvds_name_to_output(const char *s) +{ + if (strncmp(s, "rgb", 3) == 0) + return DISPLAY_OUTPUT_RGB; + else if (strncmp(s, "lvds", 4) == 0) + return DISPLAY_OUTPUT_LVDS; + else if (strncmp(s, "duallvds", 8) == 0) + return DISPLAY_OUTPUT_DUAL_LVDS; + + return -EINVAL; +} + +static const struct drm_connector_funcs rockchip_lvds_connector_funcs = { + .fill_modes = drm_helper_probe_single_connector_modes, + .destroy = drm_connector_cleanup, + .reset = drm_atomic_helper_connector_reset, + .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, +}; + +static int rockchip_lvds_connector_get_modes(struct drm_connector *connector) +{ + struct rockchip_lvds *lvds = connector_to_lvds(connector); + struct drm_panel *panel = lvds->panel; + + return drm_panel_get_modes(panel, connector); +} + +static const +struct drm_connector_helper_funcs rockchip_lvds_connector_helper_funcs = { + .get_modes = rockchip_lvds_connector_get_modes, +}; + +static int +rockchip_lvds_encoder_atomic_check(struct drm_encoder *encoder, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state) +{ + struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc_state); + + s->output_mode = ROCKCHIP_OUT_MODE_P888; + s->output_type = DRM_MODE_CONNECTOR_LVDS; + + return 0; +} + +static int rk3288_lvds_poweron(struct rockchip_lvds *lvds) +{ + int ret; + u32 val; + + ret = clk_enable(lvds->pclk); + if (ret < 0) { + DRM_DEV_ERROR(lvds->dev, "failed to enable lvds pclk %d\n", ret); + return ret; + } + ret = pm_runtime_resume_and_get(lvds->dev); + if (ret < 0) { + DRM_DEV_ERROR(lvds->dev, "failed to get pm runtime: %d\n", ret); + clk_disable(lvds->pclk); + return ret; + } + val = RK3288_LVDS_CH0_REG0_LANE4_EN | RK3288_LVDS_CH0_REG0_LANE3_EN | + RK3288_LVDS_CH0_REG0_LANE2_EN | RK3288_LVDS_CH0_REG0_LANE1_EN | + RK3288_LVDS_CH0_REG0_LANE0_EN; + if (lvds->output == DISPLAY_OUTPUT_RGB) { + val |= RK3288_LVDS_CH0_REG0_TTL_EN | + RK3288_LVDS_CH0_REG0_LANECK_EN; + rk3288_writel(lvds, RK3288_LVDS_CH0_REG0, val); + rk3288_writel(lvds, RK3288_LVDS_CH0_REG2, + RK3288_LVDS_PLL_FBDIV_REG2(0x46)); + rk3288_writel(lvds, RK3288_LVDS_CH0_REG4, + RK3288_LVDS_CH0_REG4_LANECK_TTL_MODE | + RK3288_LVDS_CH0_REG4_LANE4_TTL_MODE | + RK3288_LVDS_CH0_REG4_LANE3_TTL_MODE | + RK3288_LVDS_CH0_REG4_LANE2_TTL_MODE | + RK3288_LVDS_CH0_REG4_LANE1_TTL_MODE | + RK3288_LVDS_CH0_REG4_LANE0_TTL_MODE); + rk3288_writel(lvds, RK3288_LVDS_CH0_REG5, + RK3288_LVDS_CH0_REG5_LANECK_TTL_DATA | + RK3288_LVDS_CH0_REG5_LANE4_TTL_DATA | + RK3288_LVDS_CH0_REG5_LANE3_TTL_DATA | + RK3288_LVDS_CH0_REG5_LANE2_TTL_DATA | + RK3288_LVDS_CH0_REG5_LANE1_TTL_DATA | + RK3288_LVDS_CH0_REG5_LANE0_TTL_DATA); + } else { + val |= RK3288_LVDS_CH0_REG0_LVDS_EN | + RK3288_LVDS_CH0_REG0_LANECK_EN; + rk3288_writel(lvds, RK3288_LVDS_CH0_REG0, val); + rk3288_writel(lvds, RK3288_LVDS_CH0_REG1, + RK3288_LVDS_CH0_REG1_LANECK_BIAS | + RK3288_LVDS_CH0_REG1_LANE4_BIAS | + RK3288_LVDS_CH0_REG1_LANE3_BIAS | + RK3288_LVDS_CH0_REG1_LANE2_BIAS | + RK3288_LVDS_CH0_REG1_LANE1_BIAS | + RK3288_LVDS_CH0_REG1_LANE0_BIAS); + rk3288_writel(lvds, RK3288_LVDS_CH0_REG2, + RK3288_LVDS_CH0_REG2_RESERVE_ON | + RK3288_LVDS_CH0_REG2_LANECK_LVDS_MODE | + RK3288_LVDS_CH0_REG2_LANE4_LVDS_MODE | + RK3288_LVDS_CH0_REG2_LANE3_LVDS_MODE | + RK3288_LVDS_CH0_REG2_LANE2_LVDS_MODE | + RK3288_LVDS_CH0_REG2_LANE1_LVDS_MODE | + RK3288_LVDS_CH0_REG2_LANE0_LVDS_MODE | + RK3288_LVDS_PLL_FBDIV_REG2(0x46)); + rk3288_writel(lvds, RK3288_LVDS_CH0_REG4, 0x00); + rk3288_writel(lvds, RK3288_LVDS_CH0_REG5, 0x00); + } + rk3288_writel(lvds, RK3288_LVDS_CH0_REG3, + RK3288_LVDS_PLL_FBDIV_REG3(0x46)); + rk3288_writel(lvds, RK3288_LVDS_CH0_REGD, + RK3288_LVDS_PLL_PREDIV_REGD(0x0a)); + rk3288_writel(lvds, RK3288_LVDS_CH0_REG20, + RK3288_LVDS_CH0_REG20_LSB); + + rk3288_writel(lvds, RK3288_LVDS_CFG_REGC, + RK3288_LVDS_CFG_REGC_PLL_ENABLE); + rk3288_writel(lvds, RK3288_LVDS_CFG_REG21, + RK3288_LVDS_CFG_REG21_TX_ENABLE); + + return 0; +} + +static void rk3288_lvds_poweroff(struct rockchip_lvds *lvds) +{ + int ret; + u32 val; + + rk3288_writel(lvds, RK3288_LVDS_CFG_REG21, + RK3288_LVDS_CFG_REG21_TX_ENABLE); + rk3288_writel(lvds, RK3288_LVDS_CFG_REGC, + RK3288_LVDS_CFG_REGC_PLL_ENABLE); + val = LVDS_DUAL | LVDS_TTL_EN | LVDS_CH0_EN | LVDS_CH1_EN | LVDS_PWRDN; + val |= val << 16; + ret = regmap_write(lvds->grf, RK3288_LVDS_GRF_SOC_CON7, val); + if (ret != 0) + DRM_DEV_ERROR(lvds->dev, "Could not write to GRF: %d\n", ret); + + pm_runtime_put(lvds->dev); + clk_disable(lvds->pclk); +} + +static int rk3288_lvds_grf_config(struct drm_encoder *encoder, + struct drm_display_mode *mode) +{ + struct rockchip_lvds *lvds = encoder_to_lvds(encoder); + u8 pin_hsync = (mode->flags & DRM_MODE_FLAG_PHSYNC) ? 1 : 0; + u8 pin_dclk = (mode->flags & DRM_MODE_FLAG_PCSYNC) ? 1 : 0; + u32 val; + int ret; + + /* iomux to LCD data/sync mode */ + if (lvds->output == DISPLAY_OUTPUT_RGB) + if (lvds->pins && !IS_ERR(lvds->pins->default_state)) + pinctrl_select_state(lvds->pins->p, + lvds->pins->default_state); + val = lvds->format | LVDS_CH0_EN; + if (lvds->output == DISPLAY_OUTPUT_RGB) + val |= LVDS_TTL_EN | LVDS_CH1_EN; + else if (lvds->output == DISPLAY_OUTPUT_DUAL_LVDS) + val |= LVDS_DUAL | LVDS_CH1_EN; + + if ((mode->htotal - mode->hsync_start) & 0x01) + val |= LVDS_START_PHASE_RST_1; + + val |= (pin_dclk << 8) | (pin_hsync << 9); + val |= (0xffff << 16); + ret = regmap_write(lvds->grf, RK3288_LVDS_GRF_SOC_CON7, val); + if (ret) + DRM_DEV_ERROR(lvds->dev, "Could not write to GRF: %d\n", ret); + + return ret; +} + +static int rk3288_lvds_set_vop_source(struct rockchip_lvds *lvds, + struct drm_encoder *encoder) +{ + u32 val; + int ret; + + ret = drm_of_encoder_active_endpoint_id(lvds->dev->of_node, encoder); + if (ret < 0) + return ret; + + val = RK3288_LVDS_SOC_CON6_SEL_VOP_LIT << 16; + if (ret) + val |= RK3288_LVDS_SOC_CON6_SEL_VOP_LIT; + + ret = regmap_write(lvds->grf, RK3288_LVDS_GRF_SOC_CON6, val); + if (ret < 0) + return ret; + + return 0; +} + +static void rk3288_lvds_encoder_enable(struct drm_encoder *encoder) +{ + struct rockchip_lvds *lvds = encoder_to_lvds(encoder); + struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode; + int ret; + + drm_panel_prepare(lvds->panel); + + ret = rk3288_lvds_poweron(lvds); + if (ret < 0) { + DRM_DEV_ERROR(lvds->dev, "failed to power on LVDS: %d\n", ret); + drm_panel_unprepare(lvds->panel); + return; + } + + ret = rk3288_lvds_grf_config(encoder, mode); + if (ret) { + DRM_DEV_ERROR(lvds->dev, "failed to configure LVDS: %d\n", ret); + drm_panel_unprepare(lvds->panel); + return; + } + + ret = rk3288_lvds_set_vop_source(lvds, encoder); + if (ret) { + DRM_DEV_ERROR(lvds->dev, "failed to set VOP source: %d\n", ret); + drm_panel_unprepare(lvds->panel); + return; + } + + drm_panel_enable(lvds->panel); +} + +static void rk3288_lvds_encoder_disable(struct drm_encoder *encoder) +{ + struct rockchip_lvds *lvds = encoder_to_lvds(encoder); + + drm_panel_disable(lvds->panel); + rk3288_lvds_poweroff(lvds); + drm_panel_unprepare(lvds->panel); +} + +static int px30_lvds_poweron(struct rockchip_lvds *lvds) +{ + int ret; + + ret = pm_runtime_resume_and_get(lvds->dev); + if (ret < 0) { + DRM_DEV_ERROR(lvds->dev, "failed to get pm runtime: %d\n", ret); + return ret; + } + + /* Enable LVDS mode */ + ret = regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1, + PX30_LVDS_MODE_EN(1) | PX30_LVDS_P2S_EN(1), + PX30_LVDS_MODE_EN(1) | PX30_LVDS_P2S_EN(1)); + if (ret) + pm_runtime_put(lvds->dev); + + return ret; +} + +static void px30_lvds_poweroff(struct rockchip_lvds *lvds) +{ + regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1, + PX30_LVDS_MODE_EN(1) | PX30_LVDS_P2S_EN(1), + PX30_LVDS_MODE_EN(0) | PX30_LVDS_P2S_EN(0)); + + pm_runtime_put(lvds->dev); +} + +static int px30_lvds_grf_config(struct drm_encoder *encoder, + struct drm_display_mode *mode) +{ + struct rockchip_lvds *lvds = encoder_to_lvds(encoder); + + if (lvds->output != DISPLAY_OUTPUT_LVDS) { + DRM_DEV_ERROR(lvds->dev, "Unsupported display output %d\n", + lvds->output); + return -EINVAL; + } + + /* Set format */ + return regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1, + PX30_LVDS_FORMAT(lvds->format), + PX30_LVDS_FORMAT(lvds->format)); +} + +static int px30_lvds_set_vop_source(struct rockchip_lvds *lvds, + struct drm_encoder *encoder) +{ + int vop; + + vop = drm_of_encoder_active_endpoint_id(lvds->dev->of_node, encoder); + if (vop < 0) + return vop; + + return regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1, + PX30_LVDS_VOP_SEL(1), + PX30_LVDS_VOP_SEL(vop)); +} + +static void px30_lvds_encoder_enable(struct drm_encoder *encoder) +{ + struct rockchip_lvds *lvds = encoder_to_lvds(encoder); + struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode; + int ret; + + drm_panel_prepare(lvds->panel); + + ret = px30_lvds_poweron(lvds); + if (ret) { + DRM_DEV_ERROR(lvds->dev, "failed to power on LVDS: %d\n", ret); + drm_panel_unprepare(lvds->panel); + return; + } + + ret = px30_lvds_grf_config(encoder, mode); + if (ret) { + DRM_DEV_ERROR(lvds->dev, "failed to configure LVDS: %d\n", ret); + drm_panel_unprepare(lvds->panel); + return; + } + + ret = px30_lvds_set_vop_source(lvds, encoder); + if (ret) { + DRM_DEV_ERROR(lvds->dev, "failed to set VOP source: %d\n", ret); + drm_panel_unprepare(lvds->panel); + return; + } + + drm_panel_enable(lvds->panel); +} + +static void px30_lvds_encoder_disable(struct drm_encoder *encoder) +{ + struct rockchip_lvds *lvds = encoder_to_lvds(encoder); + + drm_panel_disable(lvds->panel); + px30_lvds_poweroff(lvds); + drm_panel_unprepare(lvds->panel); +} + +static const +struct drm_encoder_helper_funcs rk3288_lvds_encoder_helper_funcs = { + .enable = rk3288_lvds_encoder_enable, + .disable = rk3288_lvds_encoder_disable, + .atomic_check = rockchip_lvds_encoder_atomic_check, +}; + +static const +struct drm_encoder_helper_funcs px30_lvds_encoder_helper_funcs = { + .enable = px30_lvds_encoder_enable, + .disable = px30_lvds_encoder_disable, + .atomic_check = rockchip_lvds_encoder_atomic_check, +}; + +static int rk3288_lvds_probe(struct platform_device *pdev, + struct rockchip_lvds *lvds) +{ + int ret; + + lvds->regs = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(lvds->regs)) + return PTR_ERR(lvds->regs); + + lvds->pclk = devm_clk_get(lvds->dev, "pclk_lvds"); + if (IS_ERR(lvds->pclk)) { + DRM_DEV_ERROR(lvds->dev, "could not get pclk_lvds\n"); + return PTR_ERR(lvds->pclk); + } + + lvds->pins = devm_kzalloc(lvds->dev, sizeof(*lvds->pins), + GFP_KERNEL); + if (!lvds->pins) + return -ENOMEM; + + lvds->pins->p = devm_pinctrl_get(lvds->dev); + if (IS_ERR(lvds->pins->p)) { + DRM_DEV_ERROR(lvds->dev, "no pinctrl handle\n"); + devm_kfree(lvds->dev, lvds->pins); + lvds->pins = NULL; + } else { + lvds->pins->default_state = + pinctrl_lookup_state(lvds->pins->p, "lcdc"); + if (IS_ERR(lvds->pins->default_state)) { + DRM_DEV_ERROR(lvds->dev, "no default pinctrl state\n"); + devm_kfree(lvds->dev, lvds->pins); + lvds->pins = NULL; + } + } + + ret = clk_prepare(lvds->pclk); + if (ret < 0) { + DRM_DEV_ERROR(lvds->dev, "failed to prepare pclk_lvds\n"); + return ret; + } + + return 0; +} + +static int px30_lvds_probe(struct platform_device *pdev, + struct rockchip_lvds *lvds) +{ + int ret; + + /* MSB */ + ret = regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1, + PX30_LVDS_MSBSEL(1), + PX30_LVDS_MSBSEL(1)); + if (ret) + return ret; + + /* PHY */ + lvds->dphy = devm_phy_get(&pdev->dev, "dphy"); + if (IS_ERR(lvds->dphy)) + return PTR_ERR(lvds->dphy); + + ret = phy_init(lvds->dphy); + if (ret) + return ret; + + ret = phy_set_mode(lvds->dphy, PHY_MODE_LVDS); + if (ret) + return ret; + + return phy_power_on(lvds->dphy); +} + +static const struct rockchip_lvds_soc_data rk3288_lvds_data = { + .probe = rk3288_lvds_probe, + .helper_funcs = &rk3288_lvds_encoder_helper_funcs, +}; + +static const struct rockchip_lvds_soc_data px30_lvds_data = { + .probe = px30_lvds_probe, + .helper_funcs = &px30_lvds_encoder_helper_funcs, +}; + +static const struct of_device_id rockchip_lvds_dt_ids[] = { + { + .compatible = "rockchip,rk3288-lvds", + .data = &rk3288_lvds_data + }, + { + .compatible = "rockchip,px30-lvds", + .data = &px30_lvds_data + }, + {} +}; +MODULE_DEVICE_TABLE(of, rockchip_lvds_dt_ids); + +static int rockchip_lvds_bind(struct device *dev, struct device *master, + void *data) +{ + struct rockchip_lvds *lvds = dev_get_drvdata(dev); + struct drm_device *drm_dev = data; + struct drm_encoder *encoder; + struct drm_connector *connector; + struct device_node *remote = NULL; + struct device_node *port, *endpoint; + int ret = 0, child_count = 0; + const char *name; + u32 endpoint_id = 0; + + lvds->drm_dev = drm_dev; + port = of_graph_get_port_by_id(dev->of_node, 1); + if (!port) { + DRM_DEV_ERROR(dev, + "can't found port point, please init lvds panel port!\n"); + return -EINVAL; + } + for_each_child_of_node(port, endpoint) { + child_count++; + of_property_read_u32(endpoint, "reg", &endpoint_id); + ret = drm_of_find_panel_or_bridge(dev->of_node, 1, endpoint_id, + &lvds->panel, &lvds->bridge); + if (!ret) { + of_node_put(endpoint); + break; + } + } + if (!child_count) { + DRM_DEV_ERROR(dev, "lvds port does not have any children\n"); + ret = -EINVAL; + goto err_put_port; + } else if (ret) { + DRM_DEV_ERROR(dev, "failed to find panel and bridge node\n"); + ret = -EPROBE_DEFER; + goto err_put_port; + } + if (lvds->panel) + remote = lvds->panel->dev->of_node; + else + remote = lvds->bridge->of_node; + if (of_property_read_string(dev->of_node, "rockchip,output", &name)) + /* default set it as output rgb */ + lvds->output = DISPLAY_OUTPUT_RGB; + else + lvds->output = rockchip_lvds_name_to_output(name); + + if (lvds->output < 0) { + DRM_DEV_ERROR(dev, "invalid output type [%s]\n", name); + ret = lvds->output; + goto err_put_remote; + } + + if (of_property_read_string(remote, "data-mapping", &name)) + /* default set it as format vesa 18 */ + lvds->format = LVDS_VESA_18; + else + lvds->format = rockchip_lvds_name_to_format(name); + + if (lvds->format < 0) { + DRM_DEV_ERROR(dev, "invalid data-mapping format [%s]\n", name); + ret = lvds->format; + goto err_put_remote; + } + + encoder = &lvds->encoder.encoder; + encoder->possible_crtcs = drm_of_find_possible_crtcs(drm_dev, + dev->of_node); + + ret = drm_simple_encoder_init(drm_dev, encoder, DRM_MODE_ENCODER_LVDS); + if (ret < 0) { + DRM_DEV_ERROR(drm_dev->dev, + "failed to initialize encoder: %d\n", ret); + goto err_put_remote; + } + + drm_encoder_helper_add(encoder, lvds->soc_data->helper_funcs); + connector = &lvds->connector; + + if (lvds->panel) { + connector->dpms = DRM_MODE_DPMS_OFF; + ret = drm_connector_init(drm_dev, connector, + &rockchip_lvds_connector_funcs, + DRM_MODE_CONNECTOR_LVDS); + if (ret < 0) { + DRM_DEV_ERROR(drm_dev->dev, + "failed to initialize connector: %d\n", ret); + goto err_free_encoder; + } + + drm_connector_helper_add(connector, + &rockchip_lvds_connector_helper_funcs); + } else { + ret = drm_bridge_attach(encoder, lvds->bridge, NULL, + DRM_BRIDGE_ATTACH_NO_CONNECTOR); + if (ret) + goto err_free_encoder; + + connector = drm_bridge_connector_init(lvds->drm_dev, encoder); + if (IS_ERR(connector)) { + DRM_DEV_ERROR(drm_dev->dev, + "failed to initialize bridge connector: %pe\n", + connector); + ret = PTR_ERR(connector); + goto err_free_encoder; + } + } + + ret = drm_connector_attach_encoder(connector, encoder); + if (ret < 0) { + DRM_DEV_ERROR(drm_dev->dev, + "failed to attach encoder: %d\n", ret); + goto err_free_connector; + } + + pm_runtime_enable(dev); + of_node_put(remote); + of_node_put(port); + + return 0; + +err_free_connector: + drm_connector_cleanup(connector); +err_free_encoder: + drm_encoder_cleanup(encoder); +err_put_remote: + of_node_put(remote); +err_put_port: + of_node_put(port); + + return ret; +} + +static void rockchip_lvds_unbind(struct device *dev, struct device *master, + void *data) +{ + struct rockchip_lvds *lvds = dev_get_drvdata(dev); + const struct drm_encoder_helper_funcs *encoder_funcs; + + encoder_funcs = lvds->soc_data->helper_funcs; + encoder_funcs->disable(&lvds->encoder.encoder); + pm_runtime_disable(dev); + drm_connector_cleanup(&lvds->connector); + drm_encoder_cleanup(&lvds->encoder.encoder); +} + +static const struct component_ops rockchip_lvds_component_ops = { + .bind = rockchip_lvds_bind, + .unbind = rockchip_lvds_unbind, +}; + +static int rockchip_lvds_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct rockchip_lvds *lvds; + const struct of_device_id *match; + int ret; + + if (!dev->of_node) + return -ENODEV; + + lvds = devm_kzalloc(&pdev->dev, sizeof(*lvds), GFP_KERNEL); + if (!lvds) + return -ENOMEM; + + lvds->dev = dev; + match = of_match_node(rockchip_lvds_dt_ids, dev->of_node); + if (!match) + return -ENODEV; + lvds->soc_data = match->data; + + lvds->grf = syscon_regmap_lookup_by_phandle(dev->of_node, + "rockchip,grf"); + if (IS_ERR(lvds->grf)) { + DRM_DEV_ERROR(dev, "missing rockchip,grf property\n"); + return PTR_ERR(lvds->grf); + } + + ret = lvds->soc_data->probe(pdev, lvds); + if (ret) { + DRM_DEV_ERROR(dev, "Platform initialization failed\n"); + return ret; + } + + dev_set_drvdata(dev, lvds); + + ret = component_add(&pdev->dev, &rockchip_lvds_component_ops); + if (ret < 0) { + DRM_DEV_ERROR(dev, "failed to add component\n"); + clk_unprepare(lvds->pclk); + } + + return ret; +} + +static int rockchip_lvds_remove(struct platform_device *pdev) +{ + struct rockchip_lvds *lvds = platform_get_drvdata(pdev); + + component_del(&pdev->dev, &rockchip_lvds_component_ops); + clk_unprepare(lvds->pclk); + + return 0; +} + +struct platform_driver rockchip_lvds_driver = { + .probe = rockchip_lvds_probe, + .remove = rockchip_lvds_remove, + .driver = { + .name = "rockchip-lvds", + .of_match_table = of_match_ptr(rockchip_lvds_dt_ids), + }, +}; -- cgit v1.2.3