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authorLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
committerLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
commit5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch)
treecc5c2d0a898769fd59549594fedb3ee6f84e59a0 /drivers/usb/dwc3/dwc3-meson-g12a.c
downloadlinux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz
linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.zip
Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted
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(). ...
Diffstat (limited to 'drivers/usb/dwc3/dwc3-meson-g12a.c')
-rw-r--r--drivers/usb/dwc3/dwc3-meson-g12a.c985
1 files changed, 985 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/dwc3-meson-g12a.c b/drivers/usb/dwc3/dwc3-meson-g12a.c
new file mode 100644
index 000000000..b282ad0e6
--- /dev/null
+++ b/drivers/usb/dwc3/dwc3-meson-g12a.c
@@ -0,0 +1,985 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * USB Glue for Amlogic G12A SoCs
+ *
+ * Copyright (c) 2019 BayLibre, SAS
+ * Author: Neil Armstrong <narmstrong@baylibre.com>
+ */
+
+/*
+ * The USB is organized with a glue around the DWC3 Controller IP as :
+ * - Control registers for each USB2 Ports
+ * - Control registers for the USB PHY layer
+ * - SuperSpeed PHY can be enabled only if port is used
+ * - Dynamic OTG switching with ID change interrupt
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/bitfield.h>
+#include <linux/bitops.h>
+#include <linux/reset.h>
+#include <linux/phy/phy.h>
+#include <linux/usb/otg.h>
+#include <linux/usb/role.h>
+#include <linux/regulator/consumer.h>
+
+/* USB2 Ports Control Registers, offsets are per-port */
+
+#define U2P_REG_SIZE 0x20
+
+#define U2P_R0 0x0
+ #define U2P_R0_HOST_DEVICE BIT(0)
+ #define U2P_R0_POWER_OK BIT(1)
+ #define U2P_R0_HAST_MODE BIT(2)
+ #define U2P_R0_POWER_ON_RESET BIT(3)
+ #define U2P_R0_ID_PULLUP BIT(4)
+ #define U2P_R0_DRV_VBUS BIT(5)
+
+#define U2P_R1 0x4
+ #define U2P_R1_PHY_READY BIT(0)
+ #define U2P_R1_ID_DIG BIT(1)
+ #define U2P_R1_OTG_SESSION_VALID BIT(2)
+ #define U2P_R1_VBUS_VALID BIT(3)
+
+/* USB Glue Control Registers */
+
+#define G12A_GLUE_OFFSET 0x80
+
+#define USB_R0 0x00
+ #define USB_R0_P30_LANE0_TX2RX_LOOPBACK BIT(17)
+ #define USB_R0_P30_LANE0_EXT_PCLK_REQ BIT(18)
+ #define USB_R0_P30_PCS_RX_LOS_MASK_VAL_MASK GENMASK(28, 19)
+ #define USB_R0_U2D_SS_SCALEDOWN_MODE_MASK GENMASK(30, 29)
+ #define USB_R0_U2D_ACT BIT(31)
+
+#define USB_R1 0x04
+ #define USB_R1_U3H_BIGENDIAN_GS BIT(0)
+ #define USB_R1_U3H_PME_ENABLE BIT(1)
+ #define USB_R1_U3H_HUB_PORT_OVERCURRENT_MASK GENMASK(4, 2)
+ #define USB_R1_U3H_HUB_PORT_PERM_ATTACH_MASK GENMASK(9, 7)
+ #define USB_R1_U3H_HOST_U2_PORT_DISABLE_MASK GENMASK(13, 12)
+ #define USB_R1_U3H_HOST_U3_PORT_DISABLE BIT(16)
+ #define USB_R1_U3H_HOST_PORT_POWER_CONTROL_PRESENT BIT(17)
+ #define USB_R1_U3H_HOST_MSI_ENABLE BIT(18)
+ #define USB_R1_U3H_FLADJ_30MHZ_REG_MASK GENMASK(24, 19)
+ #define USB_R1_P30_PCS_TX_SWING_FULL_MASK GENMASK(31, 25)
+
+#define USB_R2 0x08
+ #define USB_R2_P30_PCS_TX_DEEMPH_3P5DB_MASK GENMASK(25, 20)
+ #define USB_R2_P30_PCS_TX_DEEMPH_6DB_MASK GENMASK(31, 26)
+
+#define USB_R3 0x0c
+ #define USB_R3_P30_SSC_ENABLE BIT(0)
+ #define USB_R3_P30_SSC_RANGE_MASK GENMASK(3, 1)
+ #define USB_R3_P30_SSC_REF_CLK_SEL_MASK GENMASK(12, 4)
+ #define USB_R3_P30_REF_SSP_EN BIT(13)
+
+#define USB_R4 0x10
+ #define USB_R4_P21_PORT_RESET_0 BIT(0)
+ #define USB_R4_P21_SLEEP_M0 BIT(1)
+ #define USB_R4_MEM_PD_MASK GENMASK(3, 2)
+ #define USB_R4_P21_ONLY BIT(4)
+
+#define USB_R5 0x14
+ #define USB_R5_ID_DIG_SYNC BIT(0)
+ #define USB_R5_ID_DIG_REG BIT(1)
+ #define USB_R5_ID_DIG_CFG_MASK GENMASK(3, 2)
+ #define USB_R5_ID_DIG_EN_0 BIT(4)
+ #define USB_R5_ID_DIG_EN_1 BIT(5)
+ #define USB_R5_ID_DIG_CURR BIT(6)
+ #define USB_R5_ID_DIG_IRQ BIT(7)
+ #define USB_R5_ID_DIG_TH_MASK GENMASK(15, 8)
+ #define USB_R5_ID_DIG_CNT_MASK GENMASK(23, 16)
+
+#define PHY_COUNT 3
+#define USB2_OTG_PHY 1
+
+static struct clk_bulk_data meson_gxl_clocks[] = {
+ { .id = "usb_ctrl" },
+ { .id = "ddr" },
+};
+
+static struct clk_bulk_data meson_g12a_clocks[] = {
+ { .id = NULL },
+};
+
+static struct clk_bulk_data meson_a1_clocks[] = {
+ { .id = "usb_ctrl" },
+ { .id = "usb_bus" },
+ { .id = "xtal_usb_ctrl" },
+};
+
+static const char * const meson_gxm_phy_names[] = {
+ "usb2-phy0", "usb2-phy1", "usb2-phy2",
+};
+
+static const char * const meson_g12a_phy_names[] = {
+ "usb2-phy0", "usb2-phy1", "usb3-phy0",
+};
+
+/*
+ * Amlogic A1 has a single physical PHY, in slot 1, but still has the
+ * two U2 PHY controls register blocks like G12A.
+ * AXG has the similar scheme, thus needs the same tweak.
+ * Handling the first PHY on slot 1 would need a large amount of code
+ * changes, and the current management is generic enough to handle it
+ * correctly when only the "usb2-phy1" phy is specified on-par with the
+ * DT bindings.
+ */
+static const char * const meson_a1_phy_names[] = {
+ "usb2-phy0", "usb2-phy1"
+};
+
+struct dwc3_meson_g12a;
+
+struct dwc3_meson_g12a_drvdata {
+ bool otg_switch_supported;
+ bool otg_phy_host_port_disable;
+ struct clk_bulk_data *clks;
+ int num_clks;
+ const char * const *phy_names;
+ int num_phys;
+ int (*setup_regmaps)(struct dwc3_meson_g12a *priv, void __iomem *base);
+ int (*usb2_init_phy)(struct dwc3_meson_g12a *priv, int i,
+ enum phy_mode mode);
+ int (*set_phy_mode)(struct dwc3_meson_g12a *priv, int i,
+ enum phy_mode mode);
+ int (*usb_init)(struct dwc3_meson_g12a *priv);
+ int (*usb_post_init)(struct dwc3_meson_g12a *priv);
+};
+
+static int dwc3_meson_gxl_setup_regmaps(struct dwc3_meson_g12a *priv,
+ void __iomem *base);
+static int dwc3_meson_g12a_setup_regmaps(struct dwc3_meson_g12a *priv,
+ void __iomem *base);
+
+static int dwc3_meson_g12a_usb2_init_phy(struct dwc3_meson_g12a *priv, int i,
+ enum phy_mode mode);
+static int dwc3_meson_gxl_usb2_init_phy(struct dwc3_meson_g12a *priv, int i,
+ enum phy_mode mode);
+
+static int dwc3_meson_g12a_set_phy_mode(struct dwc3_meson_g12a *priv,
+ int i, enum phy_mode mode);
+static int dwc3_meson_gxl_set_phy_mode(struct dwc3_meson_g12a *priv,
+ int i, enum phy_mode mode);
+
+static int dwc3_meson_g12a_usb_init(struct dwc3_meson_g12a *priv);
+static int dwc3_meson_gxl_usb_init(struct dwc3_meson_g12a *priv);
+
+static int dwc3_meson_gxl_usb_post_init(struct dwc3_meson_g12a *priv);
+
+/*
+ * For GXL and GXM SoCs:
+ * USB Phy muxing between the DWC2 Device controller and the DWC3 Host
+ * controller is buggy when switching from Device to Host when USB port
+ * is unpopulated, it causes the DWC3 to hard crash.
+ * When populated (including OTG switching with ID pin), the switch works
+ * like a charm like on the G12A platforms.
+ * In order to still switch from Host to Device on an USB Type-A port,
+ * an U2_PORT_DISABLE bit has been added to disconnect the DWC3 Host
+ * controller from the port, but when used the DWC3 controller must be
+ * reset to recover usage of the port.
+ */
+
+static const struct dwc3_meson_g12a_drvdata gxl_drvdata = {
+ .otg_switch_supported = true,
+ .otg_phy_host_port_disable = true,
+ .clks = meson_gxl_clocks,
+ .num_clks = ARRAY_SIZE(meson_g12a_clocks),
+ .phy_names = meson_a1_phy_names,
+ .num_phys = ARRAY_SIZE(meson_a1_phy_names),
+ .setup_regmaps = dwc3_meson_gxl_setup_regmaps,
+ .usb2_init_phy = dwc3_meson_gxl_usb2_init_phy,
+ .set_phy_mode = dwc3_meson_gxl_set_phy_mode,
+ .usb_init = dwc3_meson_gxl_usb_init,
+ .usb_post_init = dwc3_meson_gxl_usb_post_init,
+};
+
+static const struct dwc3_meson_g12a_drvdata gxm_drvdata = {
+ .otg_switch_supported = true,
+ .otg_phy_host_port_disable = true,
+ .clks = meson_gxl_clocks,
+ .num_clks = ARRAY_SIZE(meson_g12a_clocks),
+ .phy_names = meson_gxm_phy_names,
+ .num_phys = ARRAY_SIZE(meson_gxm_phy_names),
+ .setup_regmaps = dwc3_meson_gxl_setup_regmaps,
+ .usb2_init_phy = dwc3_meson_gxl_usb2_init_phy,
+ .set_phy_mode = dwc3_meson_gxl_set_phy_mode,
+ .usb_init = dwc3_meson_gxl_usb_init,
+ .usb_post_init = dwc3_meson_gxl_usb_post_init,
+};
+
+static const struct dwc3_meson_g12a_drvdata axg_drvdata = {
+ .otg_switch_supported = true,
+ .clks = meson_gxl_clocks,
+ .num_clks = ARRAY_SIZE(meson_gxl_clocks),
+ .phy_names = meson_a1_phy_names,
+ .num_phys = ARRAY_SIZE(meson_a1_phy_names),
+ .setup_regmaps = dwc3_meson_gxl_setup_regmaps,
+ .usb2_init_phy = dwc3_meson_gxl_usb2_init_phy,
+ .set_phy_mode = dwc3_meson_gxl_set_phy_mode,
+ .usb_init = dwc3_meson_g12a_usb_init,
+ .usb_post_init = dwc3_meson_gxl_usb_post_init,
+};
+
+static const struct dwc3_meson_g12a_drvdata g12a_drvdata = {
+ .otg_switch_supported = true,
+ .clks = meson_g12a_clocks,
+ .num_clks = ARRAY_SIZE(meson_g12a_clocks),
+ .phy_names = meson_g12a_phy_names,
+ .num_phys = ARRAY_SIZE(meson_g12a_phy_names),
+ .setup_regmaps = dwc3_meson_g12a_setup_regmaps,
+ .usb2_init_phy = dwc3_meson_g12a_usb2_init_phy,
+ .set_phy_mode = dwc3_meson_g12a_set_phy_mode,
+ .usb_init = dwc3_meson_g12a_usb_init,
+};
+
+static const struct dwc3_meson_g12a_drvdata a1_drvdata = {
+ .otg_switch_supported = false,
+ .clks = meson_a1_clocks,
+ .num_clks = ARRAY_SIZE(meson_a1_clocks),
+ .phy_names = meson_a1_phy_names,
+ .num_phys = ARRAY_SIZE(meson_a1_phy_names),
+ .setup_regmaps = dwc3_meson_g12a_setup_regmaps,
+ .usb2_init_phy = dwc3_meson_g12a_usb2_init_phy,
+ .set_phy_mode = dwc3_meson_g12a_set_phy_mode,
+ .usb_init = dwc3_meson_g12a_usb_init,
+};
+
+struct dwc3_meson_g12a {
+ struct device *dev;
+ struct regmap *u2p_regmap[PHY_COUNT];
+ struct regmap *usb_glue_regmap;
+ struct reset_control *reset;
+ struct phy *phys[PHY_COUNT];
+ enum usb_dr_mode otg_mode;
+ enum phy_mode otg_phy_mode;
+ unsigned int usb2_ports;
+ unsigned int usb3_ports;
+ struct regulator *vbus;
+ struct usb_role_switch_desc switch_desc;
+ struct usb_role_switch *role_switch;
+ const struct dwc3_meson_g12a_drvdata *drvdata;
+};
+
+static int dwc3_meson_gxl_set_phy_mode(struct dwc3_meson_g12a *priv,
+ int i, enum phy_mode mode)
+{
+ return phy_set_mode(priv->phys[i], mode);
+}
+
+static int dwc3_meson_gxl_usb2_init_phy(struct dwc3_meson_g12a *priv, int i,
+ enum phy_mode mode)
+{
+ /* On GXL PHY must be started in device mode for DWC2 init */
+ return priv->drvdata->set_phy_mode(priv, i,
+ (i == USB2_OTG_PHY) ? PHY_MODE_USB_DEVICE
+ : PHY_MODE_USB_HOST);
+}
+
+static int dwc3_meson_g12a_set_phy_mode(struct dwc3_meson_g12a *priv,
+ int i, enum phy_mode mode)
+{
+ if (mode == PHY_MODE_USB_HOST)
+ regmap_update_bits(priv->u2p_regmap[i], U2P_R0,
+ U2P_R0_HOST_DEVICE,
+ U2P_R0_HOST_DEVICE);
+ else
+ regmap_update_bits(priv->u2p_regmap[i], U2P_R0,
+ U2P_R0_HOST_DEVICE, 0);
+
+ return 0;
+}
+
+static int dwc3_meson_g12a_usb2_init_phy(struct dwc3_meson_g12a *priv, int i,
+ enum phy_mode mode)
+{
+ int ret;
+
+ regmap_update_bits(priv->u2p_regmap[i], U2P_R0,
+ U2P_R0_POWER_ON_RESET,
+ U2P_R0_POWER_ON_RESET);
+
+ if (priv->drvdata->otg_switch_supported && i == USB2_OTG_PHY) {
+ regmap_update_bits(priv->u2p_regmap[i], U2P_R0,
+ U2P_R0_ID_PULLUP | U2P_R0_DRV_VBUS,
+ U2P_R0_ID_PULLUP | U2P_R0_DRV_VBUS);
+
+ ret = priv->drvdata->set_phy_mode(priv, i, mode);
+ } else
+ ret = priv->drvdata->set_phy_mode(priv, i,
+ PHY_MODE_USB_HOST);
+
+ if (ret)
+ return ret;
+
+ regmap_update_bits(priv->u2p_regmap[i], U2P_R0,
+ U2P_R0_POWER_ON_RESET, 0);
+
+ return 0;
+}
+
+static int dwc3_meson_g12a_usb2_init(struct dwc3_meson_g12a *priv,
+ enum phy_mode mode)
+{
+ int i, ret;
+
+ for (i = 0; i < priv->drvdata->num_phys; ++i) {
+ if (!priv->phys[i])
+ continue;
+
+ if (!strstr(priv->drvdata->phy_names[i], "usb2"))
+ continue;
+
+ ret = priv->drvdata->usb2_init_phy(priv, i, mode);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static void dwc3_meson_g12a_usb3_init(struct dwc3_meson_g12a *priv)
+{
+ regmap_update_bits(priv->usb_glue_regmap, USB_R3,
+ USB_R3_P30_SSC_RANGE_MASK |
+ USB_R3_P30_REF_SSP_EN,
+ USB_R3_P30_SSC_ENABLE |
+ FIELD_PREP(USB_R3_P30_SSC_RANGE_MASK, 2) |
+ USB_R3_P30_REF_SSP_EN);
+ udelay(2);
+
+ regmap_update_bits(priv->usb_glue_regmap, USB_R2,
+ USB_R2_P30_PCS_TX_DEEMPH_3P5DB_MASK,
+ FIELD_PREP(USB_R2_P30_PCS_TX_DEEMPH_3P5DB_MASK, 0x15));
+
+ regmap_update_bits(priv->usb_glue_regmap, USB_R2,
+ USB_R2_P30_PCS_TX_DEEMPH_6DB_MASK,
+ FIELD_PREP(USB_R2_P30_PCS_TX_DEEMPH_6DB_MASK, 0x20));
+
+ udelay(2);
+
+ regmap_update_bits(priv->usb_glue_regmap, USB_R1,
+ USB_R1_U3H_HOST_PORT_POWER_CONTROL_PRESENT,
+ USB_R1_U3H_HOST_PORT_POWER_CONTROL_PRESENT);
+
+ regmap_update_bits(priv->usb_glue_regmap, USB_R1,
+ USB_R1_P30_PCS_TX_SWING_FULL_MASK,
+ FIELD_PREP(USB_R1_P30_PCS_TX_SWING_FULL_MASK, 127));
+}
+
+static void dwc3_meson_g12a_usb_otg_apply_mode(struct dwc3_meson_g12a *priv,
+ enum phy_mode mode)
+{
+ if (mode == PHY_MODE_USB_DEVICE) {
+ if (priv->otg_mode != USB_DR_MODE_OTG &&
+ priv->drvdata->otg_phy_host_port_disable)
+ /* Isolate the OTG PHY port from the Host Controller */
+ regmap_update_bits(priv->usb_glue_regmap, USB_R1,
+ USB_R1_U3H_HOST_U2_PORT_DISABLE_MASK,
+ FIELD_PREP(USB_R1_U3H_HOST_U2_PORT_DISABLE_MASK,
+ BIT(USB2_OTG_PHY)));
+
+ regmap_update_bits(priv->usb_glue_regmap, USB_R0,
+ USB_R0_U2D_ACT, USB_R0_U2D_ACT);
+ regmap_update_bits(priv->usb_glue_regmap, USB_R0,
+ USB_R0_U2D_SS_SCALEDOWN_MODE_MASK, 0);
+ regmap_update_bits(priv->usb_glue_regmap, USB_R4,
+ USB_R4_P21_SLEEP_M0, USB_R4_P21_SLEEP_M0);
+ } else {
+ if (priv->otg_mode != USB_DR_MODE_OTG &&
+ priv->drvdata->otg_phy_host_port_disable) {
+ regmap_update_bits(priv->usb_glue_regmap, USB_R1,
+ USB_R1_U3H_HOST_U2_PORT_DISABLE_MASK, 0);
+ msleep(500);
+ }
+ regmap_update_bits(priv->usb_glue_regmap, USB_R0,
+ USB_R0_U2D_ACT, 0);
+ regmap_update_bits(priv->usb_glue_regmap, USB_R4,
+ USB_R4_P21_SLEEP_M0, 0);
+ }
+}
+
+static int dwc3_meson_g12a_usb_init_glue(struct dwc3_meson_g12a *priv,
+ enum phy_mode mode)
+{
+ int ret;
+
+ ret = dwc3_meson_g12a_usb2_init(priv, mode);
+ if (ret)
+ return ret;
+
+ regmap_update_bits(priv->usb_glue_regmap, USB_R1,
+ USB_R1_U3H_FLADJ_30MHZ_REG_MASK,
+ FIELD_PREP(USB_R1_U3H_FLADJ_30MHZ_REG_MASK, 0x20));
+
+ regmap_update_bits(priv->usb_glue_regmap, USB_R5,
+ USB_R5_ID_DIG_EN_0,
+ USB_R5_ID_DIG_EN_0);
+ regmap_update_bits(priv->usb_glue_regmap, USB_R5,
+ USB_R5_ID_DIG_EN_1,
+ USB_R5_ID_DIG_EN_1);
+ regmap_update_bits(priv->usb_glue_regmap, USB_R5,
+ USB_R5_ID_DIG_TH_MASK,
+ FIELD_PREP(USB_R5_ID_DIG_TH_MASK, 0xff));
+
+ /* If we have an actual SuperSpeed port, initialize it */
+ if (priv->usb3_ports)
+ dwc3_meson_g12a_usb3_init(priv);
+
+ dwc3_meson_g12a_usb_otg_apply_mode(priv, mode);
+
+ return 0;
+}
+
+static const struct regmap_config phy_meson_g12a_usb_glue_regmap_conf = {
+ .name = "usb-glue",
+ .reg_bits = 8,
+ .val_bits = 32,
+ .reg_stride = 4,
+ .max_register = USB_R5,
+};
+
+static int dwc3_meson_g12a_get_phys(struct dwc3_meson_g12a *priv)
+{
+ const char *phy_name;
+ int i;
+
+ for (i = 0 ; i < priv->drvdata->num_phys ; ++i) {
+ phy_name = priv->drvdata->phy_names[i];
+ priv->phys[i] = devm_phy_optional_get(priv->dev, phy_name);
+ if (!priv->phys[i])
+ continue;
+
+ if (IS_ERR(priv->phys[i]))
+ return PTR_ERR(priv->phys[i]);
+
+ if (strstr(phy_name, "usb3"))
+ priv->usb3_ports++;
+ else
+ priv->usb2_ports++;
+ }
+
+ dev_info(priv->dev, "USB2 ports: %d\n", priv->usb2_ports);
+ dev_info(priv->dev, "USB3 ports: %d\n", priv->usb3_ports);
+
+ return 0;
+}
+
+static enum phy_mode dwc3_meson_g12a_get_id(struct dwc3_meson_g12a *priv)
+{
+ u32 reg;
+
+ regmap_read(priv->usb_glue_regmap, USB_R5, &reg);
+
+ if (reg & (USB_R5_ID_DIG_SYNC | USB_R5_ID_DIG_REG))
+ return PHY_MODE_USB_DEVICE;
+
+ return PHY_MODE_USB_HOST;
+}
+
+static int dwc3_meson_g12a_otg_mode_set(struct dwc3_meson_g12a *priv,
+ enum phy_mode mode)
+{
+ int ret;
+
+ if (!priv->drvdata->otg_switch_supported || !priv->phys[USB2_OTG_PHY])
+ return -EINVAL;
+
+ if (mode == PHY_MODE_USB_HOST)
+ dev_info(priv->dev, "switching to Host Mode\n");
+ else
+ dev_info(priv->dev, "switching to Device Mode\n");
+
+ if (priv->vbus) {
+ if (mode == PHY_MODE_USB_DEVICE)
+ ret = regulator_disable(priv->vbus);
+ else
+ ret = regulator_enable(priv->vbus);
+ if (ret)
+ return ret;
+ }
+
+ priv->otg_phy_mode = mode;
+
+ ret = priv->drvdata->set_phy_mode(priv, USB2_OTG_PHY, mode);
+ if (ret)
+ return ret;
+
+ dwc3_meson_g12a_usb_otg_apply_mode(priv, mode);
+
+ return 0;
+}
+
+static int dwc3_meson_g12a_role_set(struct usb_role_switch *sw,
+ enum usb_role role)
+{
+ struct dwc3_meson_g12a *priv = usb_role_switch_get_drvdata(sw);
+ enum phy_mode mode;
+
+ if (role == USB_ROLE_NONE)
+ return 0;
+
+ mode = (role == USB_ROLE_HOST) ? PHY_MODE_USB_HOST
+ : PHY_MODE_USB_DEVICE;
+
+ if (mode == priv->otg_phy_mode)
+ return 0;
+
+ if (priv->drvdata->otg_phy_host_port_disable)
+ dev_warn_once(priv->dev, "Broken manual OTG switch\n");
+
+ return dwc3_meson_g12a_otg_mode_set(priv, mode);
+}
+
+static enum usb_role dwc3_meson_g12a_role_get(struct usb_role_switch *sw)
+{
+ struct dwc3_meson_g12a *priv = usb_role_switch_get_drvdata(sw);
+
+ return priv->otg_phy_mode == PHY_MODE_USB_HOST ?
+ USB_ROLE_HOST : USB_ROLE_DEVICE;
+}
+
+static irqreturn_t dwc3_meson_g12a_irq_thread(int irq, void *data)
+{
+ struct dwc3_meson_g12a *priv = data;
+ enum phy_mode otg_id;
+
+ otg_id = dwc3_meson_g12a_get_id(priv);
+ if (otg_id != priv->otg_phy_mode) {
+ if (dwc3_meson_g12a_otg_mode_set(priv, otg_id))
+ dev_warn(priv->dev, "Failed to switch OTG mode\n");
+ }
+
+ regmap_update_bits(priv->usb_glue_regmap, USB_R5,
+ USB_R5_ID_DIG_IRQ, 0);
+
+ return IRQ_HANDLED;
+}
+
+static struct device *dwc3_meson_g12_find_child(struct device *dev,
+ const char *compatible)
+{
+ struct platform_device *pdev;
+ struct device_node *np;
+
+ np = of_get_compatible_child(dev->of_node, compatible);
+ if (!np)
+ return NULL;
+
+ pdev = of_find_device_by_node(np);
+ of_node_put(np);
+ if (!pdev)
+ return NULL;
+
+ return &pdev->dev;
+}
+
+static int dwc3_meson_g12a_otg_init(struct platform_device *pdev,
+ struct dwc3_meson_g12a *priv)
+{
+ enum phy_mode otg_id;
+ int ret, irq;
+ struct device *dev = &pdev->dev;
+
+ if (!priv->drvdata->otg_switch_supported)
+ return 0;
+
+ if (priv->otg_mode == USB_DR_MODE_OTG) {
+ /* Ack irq before registering */
+ regmap_update_bits(priv->usb_glue_regmap, USB_R5,
+ USB_R5_ID_DIG_IRQ, 0);
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0)
+ return irq;
+ ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
+ dwc3_meson_g12a_irq_thread,
+ IRQF_ONESHOT, pdev->name, priv);
+ if (ret)
+ return ret;
+ }
+
+ /* Setup OTG mode corresponding to the ID pin */
+ if (priv->otg_mode == USB_DR_MODE_OTG) {
+ otg_id = dwc3_meson_g12a_get_id(priv);
+ if (otg_id != priv->otg_phy_mode) {
+ if (dwc3_meson_g12a_otg_mode_set(priv, otg_id))
+ dev_warn(dev, "Failed to switch OTG mode\n");
+ }
+ }
+
+ /* Setup role switcher */
+ priv->switch_desc.usb2_port = dwc3_meson_g12_find_child(dev,
+ "snps,dwc3");
+ priv->switch_desc.udc = dwc3_meson_g12_find_child(dev, "snps,dwc2");
+ priv->switch_desc.allow_userspace_control = true;
+ priv->switch_desc.set = dwc3_meson_g12a_role_set;
+ priv->switch_desc.get = dwc3_meson_g12a_role_get;
+ priv->switch_desc.driver_data = priv;
+
+ priv->role_switch = usb_role_switch_register(dev, &priv->switch_desc);
+ if (IS_ERR(priv->role_switch))
+ dev_warn(dev, "Unable to register Role Switch\n");
+
+ return 0;
+}
+
+static int dwc3_meson_gxl_setup_regmaps(struct dwc3_meson_g12a *priv,
+ void __iomem *base)
+{
+ /* GXL controls the PHY mode in the PHY registers unlike G12A */
+ priv->usb_glue_regmap = devm_regmap_init_mmio(priv->dev, base,
+ &phy_meson_g12a_usb_glue_regmap_conf);
+ return PTR_ERR_OR_ZERO(priv->usb_glue_regmap);
+}
+
+static int dwc3_meson_g12a_setup_regmaps(struct dwc3_meson_g12a *priv,
+ void __iomem *base)
+{
+ int i;
+
+ priv->usb_glue_regmap = devm_regmap_init_mmio(priv->dev,
+ base + G12A_GLUE_OFFSET,
+ &phy_meson_g12a_usb_glue_regmap_conf);
+ if (IS_ERR(priv->usb_glue_regmap))
+ return PTR_ERR(priv->usb_glue_regmap);
+
+ /* Create a regmap for each USB2 PHY control register set */
+ for (i = 0; i < priv->drvdata->num_phys; i++) {
+ struct regmap_config u2p_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 32,
+ .reg_stride = 4,
+ .max_register = U2P_R1,
+ };
+
+ if (!strstr(priv->drvdata->phy_names[i], "usb2"))
+ continue;
+
+ u2p_regmap_config.name = devm_kasprintf(priv->dev, GFP_KERNEL,
+ "u2p-%d", i);
+ if (!u2p_regmap_config.name)
+ return -ENOMEM;
+
+ priv->u2p_regmap[i] = devm_regmap_init_mmio(priv->dev,
+ base + (i * U2P_REG_SIZE),
+ &u2p_regmap_config);
+ if (IS_ERR(priv->u2p_regmap[i]))
+ return PTR_ERR(priv->u2p_regmap[i]);
+ }
+
+ return 0;
+}
+
+static int dwc3_meson_g12a_usb_init(struct dwc3_meson_g12a *priv)
+{
+ return dwc3_meson_g12a_usb_init_glue(priv, priv->otg_phy_mode);
+}
+
+static int dwc3_meson_gxl_usb_init(struct dwc3_meson_g12a *priv)
+{
+ return dwc3_meson_g12a_usb_init_glue(priv, PHY_MODE_USB_DEVICE);
+}
+
+static int dwc3_meson_gxl_usb_post_init(struct dwc3_meson_g12a *priv)
+{
+ int ret;
+
+ ret = priv->drvdata->set_phy_mode(priv, USB2_OTG_PHY,
+ priv->otg_phy_mode);
+ if (ret)
+ return ret;
+
+ dwc3_meson_g12a_usb_otg_apply_mode(priv, priv->otg_phy_mode);
+
+ return 0;
+}
+
+static int dwc3_meson_g12a_probe(struct platform_device *pdev)
+{
+ struct dwc3_meson_g12a *priv;
+ struct device *dev = &pdev->dev;
+ struct device_node *np = dev->of_node;
+ void __iomem *base;
+ int ret, i;
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ base = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(base))
+ return PTR_ERR(base);
+
+ priv->drvdata = of_device_get_match_data(&pdev->dev);
+ priv->dev = dev;
+
+ priv->vbus = devm_regulator_get_optional(dev, "vbus");
+ if (IS_ERR(priv->vbus)) {
+ if (PTR_ERR(priv->vbus) == -EPROBE_DEFER)
+ return PTR_ERR(priv->vbus);
+ priv->vbus = NULL;
+ }
+
+ ret = devm_clk_bulk_get(dev,
+ priv->drvdata->num_clks,
+ priv->drvdata->clks);
+ if (ret)
+ return ret;
+
+ ret = clk_bulk_prepare_enable(priv->drvdata->num_clks,
+ priv->drvdata->clks);
+ if (ret)
+ return ret;
+
+ platform_set_drvdata(pdev, priv);
+
+ priv->reset = devm_reset_control_get_shared(dev, NULL);
+ if (IS_ERR(priv->reset)) {
+ ret = PTR_ERR(priv->reset);
+ dev_err(dev, "failed to get device reset, err=%d\n", ret);
+ goto err_disable_clks;
+ }
+
+ ret = reset_control_reset(priv->reset);
+ if (ret)
+ goto err_disable_clks;
+
+ ret = dwc3_meson_g12a_get_phys(priv);
+ if (ret)
+ goto err_rearm;
+
+ ret = priv->drvdata->setup_regmaps(priv, base);
+ if (ret)
+ goto err_rearm;
+
+ if (priv->vbus) {
+ ret = regulator_enable(priv->vbus);
+ if (ret)
+ goto err_rearm;
+ }
+
+ /* Get dr_mode */
+ priv->otg_mode = usb_get_dr_mode(dev);
+
+ if (priv->otg_mode == USB_DR_MODE_PERIPHERAL)
+ priv->otg_phy_mode = PHY_MODE_USB_DEVICE;
+ else
+ priv->otg_phy_mode = PHY_MODE_USB_HOST;
+
+ ret = priv->drvdata->usb_init(priv);
+ if (ret)
+ goto err_disable_regulator;
+
+ /* Init PHYs */
+ for (i = 0 ; i < PHY_COUNT ; ++i) {
+ ret = phy_init(priv->phys[i]);
+ if (ret)
+ goto err_disable_regulator;
+ }
+
+ /* Set PHY Power */
+ for (i = 0 ; i < PHY_COUNT ; ++i) {
+ ret = phy_power_on(priv->phys[i]);
+ if (ret)
+ goto err_phys_exit;
+ }
+
+ if (priv->drvdata->usb_post_init) {
+ ret = priv->drvdata->usb_post_init(priv);
+ if (ret)
+ goto err_phys_power;
+ }
+
+ ret = of_platform_populate(np, NULL, NULL, dev);
+ if (ret)
+ goto err_phys_power;
+
+ ret = dwc3_meson_g12a_otg_init(pdev, priv);
+ if (ret)
+ goto err_phys_power;
+
+ pm_runtime_set_active(dev);
+ pm_runtime_enable(dev);
+ pm_runtime_get_sync(dev);
+
+ return 0;
+
+err_phys_power:
+ for (i = 0 ; i < PHY_COUNT ; ++i)
+ phy_power_off(priv->phys[i]);
+
+err_phys_exit:
+ for (i = 0 ; i < PHY_COUNT ; ++i)
+ phy_exit(priv->phys[i]);
+
+err_disable_regulator:
+ if (priv->vbus)
+ regulator_disable(priv->vbus);
+
+err_rearm:
+ reset_control_rearm(priv->reset);
+
+err_disable_clks:
+ clk_bulk_disable_unprepare(priv->drvdata->num_clks,
+ priv->drvdata->clks);
+
+ return ret;
+}
+
+static int dwc3_meson_g12a_remove(struct platform_device *pdev)
+{
+ struct dwc3_meson_g12a *priv = platform_get_drvdata(pdev);
+ struct device *dev = &pdev->dev;
+ int i;
+
+ if (priv->drvdata->otg_switch_supported)
+ usb_role_switch_unregister(priv->role_switch);
+
+ of_platform_depopulate(dev);
+
+ for (i = 0 ; i < PHY_COUNT ; ++i) {
+ phy_power_off(priv->phys[i]);
+ phy_exit(priv->phys[i]);
+ }
+
+ pm_runtime_disable(dev);
+ pm_runtime_put_noidle(dev);
+ pm_runtime_set_suspended(dev);
+
+ reset_control_rearm(priv->reset);
+
+ clk_bulk_disable_unprepare(priv->drvdata->num_clks,
+ priv->drvdata->clks);
+
+ return 0;
+}
+
+static int __maybe_unused dwc3_meson_g12a_runtime_suspend(struct device *dev)
+{
+ struct dwc3_meson_g12a *priv = dev_get_drvdata(dev);
+
+ clk_bulk_disable_unprepare(priv->drvdata->num_clks,
+ priv->drvdata->clks);
+
+ return 0;
+}
+
+static int __maybe_unused dwc3_meson_g12a_runtime_resume(struct device *dev)
+{
+ struct dwc3_meson_g12a *priv = dev_get_drvdata(dev);
+
+ return clk_bulk_prepare_enable(priv->drvdata->num_clks,
+ priv->drvdata->clks);
+}
+
+static int __maybe_unused dwc3_meson_g12a_suspend(struct device *dev)
+{
+ struct dwc3_meson_g12a *priv = dev_get_drvdata(dev);
+ int i, ret;
+
+ if (priv->vbus && priv->otg_phy_mode == PHY_MODE_USB_HOST) {
+ ret = regulator_disable(priv->vbus);
+ if (ret)
+ return ret;
+ }
+
+ for (i = 0 ; i < PHY_COUNT ; ++i) {
+ phy_power_off(priv->phys[i]);
+ phy_exit(priv->phys[i]);
+ }
+
+ reset_control_rearm(priv->reset);
+
+ return 0;
+}
+
+static int __maybe_unused dwc3_meson_g12a_resume(struct device *dev)
+{
+ struct dwc3_meson_g12a *priv = dev_get_drvdata(dev);
+ int i, ret;
+
+ ret = reset_control_reset(priv->reset);
+ if (ret)
+ return ret;
+
+ ret = priv->drvdata->usb_init(priv);
+ if (ret)
+ return ret;
+
+ /* Init PHYs */
+ for (i = 0 ; i < PHY_COUNT ; ++i) {
+ ret = phy_init(priv->phys[i]);
+ if (ret)
+ return ret;
+ }
+
+ /* Set PHY Power */
+ for (i = 0 ; i < PHY_COUNT ; ++i) {
+ ret = phy_power_on(priv->phys[i]);
+ if (ret)
+ return ret;
+ }
+
+ if (priv->vbus && priv->otg_phy_mode == PHY_MODE_USB_HOST) {
+ ret = regulator_enable(priv->vbus);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct dev_pm_ops dwc3_meson_g12a_dev_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(dwc3_meson_g12a_suspend, dwc3_meson_g12a_resume)
+ SET_RUNTIME_PM_OPS(dwc3_meson_g12a_runtime_suspend,
+ dwc3_meson_g12a_runtime_resume, NULL)
+};
+
+static const struct of_device_id dwc3_meson_g12a_match[] = {
+ {
+ .compatible = "amlogic,meson-gxl-usb-ctrl",
+ .data = &gxl_drvdata,
+ },
+ {
+ .compatible = "amlogic,meson-gxm-usb-ctrl",
+ .data = &gxm_drvdata,
+ },
+ {
+ .compatible = "amlogic,meson-axg-usb-ctrl",
+ .data = &axg_drvdata,
+ },
+ {
+ .compatible = "amlogic,meson-g12a-usb-ctrl",
+ .data = &g12a_drvdata,
+ },
+ {
+ .compatible = "amlogic,meson-a1-usb-ctrl",
+ .data = &a1_drvdata,
+ },
+ { /* Sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, dwc3_meson_g12a_match);
+
+static struct platform_driver dwc3_meson_g12a_driver = {
+ .probe = dwc3_meson_g12a_probe,
+ .remove = dwc3_meson_g12a_remove,
+ .driver = {
+ .name = "dwc3-meson-g12a",
+ .of_match_table = dwc3_meson_g12a_match,
+ .pm = &dwc3_meson_g12a_dev_pm_ops,
+ },
+};
+
+module_platform_driver(dwc3_meson_g12a_driver);
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("Amlogic Meson G12A USB Glue Layer");
+MODULE_AUTHOR("Neil Armstrong <narmstrong@baylibre.com>");