/** * IP TRUNK version * from 0x1003 version, USB3 Gen2 is supported, two changes affect driver: * 1. MAXPKT and MULTI bits layout of TXCSR1 and RXCSR1 are adjusted, * but not backward compatible * 2. QMU extend buffer length supported
*/ #define MTU3_TRUNK_VERS_1003 0x1003
/** * Normally the device works on HS or SS, to simplify fifo management, * devide fifo into some 512B parts, use bitmap to manage it; And * 128 bits size of bitmap is large enough, that means it can manage * up to 64KB fifo size. * NOTE: MTU3_EP_FIFO_UNIT should be power of two
*/ #define MTU3_EP_FIFO_UNIT (1 << 9) #define MTU3_FIFO_BIT_SIZE 128 #define MTU3_U2_IP_EP0_FIFO_SIZE 64
/** * Maximum size of ep0 response buffer for ch9 requests, * the SET_SEL request uses 6 so far, and GET_STATUS is 2
*/ #define EP0_RESPONSE_BUF 6
#define BULK_CLKS_CNT 6
/* device operated link and speed got from DEVICE_CONF register */ enum mtu3_speed {
MTU3_SPEED_INACTIVE = 0,
MTU3_SPEED_FULL = 1,
MTU3_SPEED_HIGH = 3,
MTU3_SPEED_SUPER = 4,
MTU3_SPEED_SUPER_PLUS = 5,
};
/** * @MU3D_EP0_STATE_SETUP: waits for SETUP or received a SETUP * without data stage. * @MU3D_EP0_STATE_TX: IN data stage * @MU3D_EP0_STATE_RX: OUT data stage * @MU3D_EP0_STATE_TX_END: the last IN data is transferred, and * waits for its completion interrupt * @MU3D_EP0_STATE_STALL: ep0 is in stall status, will be auto-cleared * after receives a SETUP.
*/ enum mtu3_g_ep0_state {
MU3D_EP0_STATE_SETUP = 1,
MU3D_EP0_STATE_TX,
MU3D_EP0_STATE_RX,
MU3D_EP0_STATE_TX_END,
MU3D_EP0_STATE_STALL,
};
/** * MTU3_DR_FORCE_NONE: automatically switch host and periperal mode * by IDPIN signal. * MTU3_DR_FORCE_HOST: force to enter host mode and override OTG * IDPIN signal. * MTU3_DR_FORCE_DEVICE: force to enter peripheral mode.
*/ enum mtu3_dr_force_mode {
MTU3_DR_FORCE_NONE = 0,
MTU3_DR_FORCE_HOST,
MTU3_DR_FORCE_DEVICE,
};
/** * @base: the base address of fifo * @limit: the bitmap size in bits * @bitmap: fifo bitmap in unit of @MTU3_EP_FIFO_UNIT
*/ struct mtu3_fifo_info {
u32 base;
u32 limit;
DECLARE_BITMAP(bitmap, MTU3_FIFO_BIT_SIZE);
};
/** * General Purpose Descriptor (GPD): * The format of TX GPD is a little different from RX one. * And the size of GPD is 16 bytes. * * @dw0_info: * bit0: Hardware Own (HWO) * bit1: Buffer Descriptor Present (BDP), always 0, BD is not supported * bit2: Bypass (BPS), 1: HW skips this GPD if HWO = 1 * bit6: [EL] Zero Length Packet (ZLP), moved from @dw3_info[29] * bit7: Interrupt On Completion (IOC) * bit[31:16]: ([EL] bit[31:12]) allow data buffer length (RX ONLY), * the buffer length of the data to receive * bit[23:16]: ([EL] bit[31:24]) extension address (TX ONLY), * lower 4 bits are extension bits of @buffer, * upper 4 bits are extension bits of @next_gpd * @next_gpd: Physical address of the next GPD * @buffer: Physical address of the data buffer * @dw3_info: * bit[15:0]: ([EL] bit[19:0]) data buffer length, * (TX): the buffer length of the data to transmit * (RX): The total length of data received * bit[23:16]: ([EL] bit[31:24]) extension address (RX ONLY), * lower 4 bits are extension bits of @buffer, * upper 4 bits are extension bits of @next_gpd * bit29: ([EL] abandoned) Zero Length Packet (ZLP) (TX ONLY)
*/ struct qmu_gpd {
__le32 dw0_info;
__le32 next_gpd;
__le32 buffer;
__le32 dw3_info;
} __packed;
/** * dma: physical base address of GPD segment * start: virtual base address of GPD segment * end: the last GPD element * enqueue: the first empty GPD to use * dequeue: the first completed GPD serviced by ISR * NOTE: the size of GPD ring should be >= 2
*/ struct mtu3_gpd_ring {
dma_addr_t dma; struct qmu_gpd *start; struct qmu_gpd *end; struct qmu_gpd *enqueue; struct qmu_gpd *dequeue;
};
/** * @vbus: vbus 5V used by host mode * @edev: external connector used to detect vbus and iddig changes * @id_nb : notifier for iddig(idpin) detection * @dr_work : work for drd mode switch, used to avoid sleep in atomic context * @desired_role : role desired to switch * @default_role : default mode while usb role is USB_ROLE_NONE * @role_sw : use USB Role Switch to support dual-role switch, can't use * extcon at the same time, and extcon is deprecated. * @role_sw_used : true when the USB Role Switch is used. * @is_u3_drd: whether port0 supports usb3.0 dual-role device or not * @manual_drd_enabled: it's true when supports dual-role device by debugfs * to switch host/device modes depending on user input.
*/ struct otg_switch_mtk { struct regulator *vbus; struct extcon_dev *edev; struct notifier_block id_nb; struct work_struct dr_work; enum usb_role desired_role; enum usb_role default_role; struct usb_role_switch *role_sw; bool role_sw_used; bool is_u3_drd; bool manual_drd_enabled;
};
/** * @mac_base: register base address of device MAC, exclude xHCI's * @ippc_base: register base address of IP Power and Clock interface (IPPC) * @vusb33: usb3.3V shared by device/host IP * @dr_mode: works in which mode: * host only, device only or dual-role mode * @u2_ports: number of usb2.0 host ports * @u3_ports: number of usb3.0 host ports * @u2p_dis_msk: mask of disabling usb2 ports, e.g. bit0==1 to * disable u2port0, bit1==1 to disable u2port1,... etc, * but when use dual-role mode, can't disable u2port0 * @u3p_dis_msk: mask of disabling usb3 ports, for example, bit0==1 to * disable u3port0, bit1==1 to disable u3port1,... etc * @dbgfs_root: only used when supports manual dual-role switch via debugfs * @uwk_en: it's true when supports remote wakeup in host mode * @uwk: syscon including usb wakeup glue layer between SSUSB IP and SPM * @uwk_reg_base: the base address of the wakeup glue layer in @uwk * @uwk_vers: the version of the wakeup glue layer
*/ struct ssusb_mtk { struct device *dev; struct mtu3 *u3d; void __iomem *mac_base; void __iomem *ippc_base; struct phy **phys; int num_phys; int wakeup_irq; /* common power & clock */ struct regulator *vusb33; struct clk_bulk_data clks[BULK_CLKS_CNT]; /* otg */ struct otg_switch_mtk otg_switch; enum usb_dr_mode dr_mode; bool is_host; int u2_ports; int u3_ports; int u2p_dis_msk; int u3p_dis_msk; struct dentry *dbgfs_root; /* usb wakeup for host mode */ bool uwk_en; struct regmap *uwk;
u32 uwk_reg_base;
u32 uwk_vers;
};
/** * @fifo_size: it is (@slot + 1) * @fifo_seg_size * @fifo_seg_size: it is roundup_pow_of_two(@maxp)
*/ struct mtu3_ep { struct usb_ep ep; char name[12]; struct mtu3 *mtu;
u8 epnum;
u8 type;
u8 is_in;
u16 maxp; int slot;
u32 fifo_size;
u32 fifo_addr;
u32 fifo_seg_size; struct mtu3_fifo_info *fifo;
/** * struct mtu3 - device driver instance data. * @slot: MTU3_U2_IP_SLOT_DEFAULT for U2 IP only, * MTU3_U3_IP_SLOT_DEFAULT for U3 IP * @may_wakeup: means device's remote wakeup is enabled * @is_self_powered: is reported in device status and the config descriptor * @delayed_status: true when function drivers ask for delayed status * @gen2cp: compatible with USB3 Gen2 IP * @ep0_req: dummy request used while handling standard USB requests * for GET_STATUS and SET_SEL * @setup_buf: ep0 response buffer for GET_STATUS and SET_SEL requests * @u3_capable: is capable of supporting USB3
*/ struct mtu3 {
spinlock_t lock; struct ssusb_mtk *ssusb; struct device *dev; void __iomem *mac_base; void __iomem *ippc_base; int irq;
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