| // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) |
| /* |
| * core.h - DesignWare HS OTG Controller common declarations |
| * |
| * Copyright (C) 2004-2013 Synopsys, Inc. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions, and the following disclaimer, |
| * without modification. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. The names of the above-listed copyright holders may not be used |
| * to endorse or promote products derived from this software without |
| * specific prior written permission. |
| * |
| * ALTERNATIVELY, this software may be distributed under the terms of the |
| * GNU General Public License ("GPL") as published by the Free Software |
| * Foundation; either version 2 of the License, or (at your option) any |
| * later version. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
| * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef __DWC2_CORE_H__ |
| #define __DWC2_CORE_H__ |
| |
| #include <linux/phy/phy.h> |
| #include <linux/regulator/consumer.h> |
| #include <linux/usb/gadget.h> |
| #include <linux/usb/otg.h> |
| #include <linux/usb/phy.h> |
| #include "hw.h" |
| |
| /* |
| * Suggested defines for tracers: |
| * - no_printk: Disable tracing |
| * - pr_info: Print this info to the console |
| * - trace_printk: Print this info to trace buffer (good for verbose logging) |
| */ |
| |
| #define DWC2_TRACE_SCHEDULER no_printk |
| #define DWC2_TRACE_SCHEDULER_VB no_printk |
| |
| /* Detailed scheduler tracing, but won't overwhelm console */ |
| #define dwc2_sch_dbg(hsotg, fmt, ...) \ |
| DWC2_TRACE_SCHEDULER(pr_fmt("%s: SCH: " fmt), \ |
| dev_name(hsotg->dev), ##__VA_ARGS__) |
| |
| /* Verbose scheduler tracing */ |
| #define dwc2_sch_vdbg(hsotg, fmt, ...) \ |
| DWC2_TRACE_SCHEDULER_VB(pr_fmt("%s: SCH: " fmt), \ |
| dev_name(hsotg->dev), ##__VA_ARGS__) |
| |
| #ifdef CONFIG_MIPS |
| /* |
| * There are some MIPS machines that can run in either big-endian |
| * or little-endian mode and that use the dwc2 register without |
| * a byteswap in both ways. |
| * Unlike other architectures, MIPS apparently does not require a |
| * barrier before the __raw_writel() to synchronize with DMA but does |
| * require the barrier after the __raw_writel() to serialize a set of |
| * writes. This set of operations was added specifically for MIPS and |
| * should only be used there. |
| */ |
| static inline u32 dwc2_readl(const void __iomem *addr) |
| { |
| u32 value = __raw_readl(addr); |
| |
| /* In order to preserve endianness __raw_* operation is used. Therefore |
| * a barrier is needed to ensure IO access is not re-ordered across |
| * reads or writes |
| */ |
| mb(); |
| return value; |
| } |
| |
| static inline void dwc2_writel(u32 value, void __iomem *addr) |
| { |
| __raw_writel(value, addr); |
| |
| /* |
| * In order to preserve endianness __raw_* operation is used. Therefore |
| * a barrier is needed to ensure IO access is not re-ordered across |
| * reads or writes |
| */ |
| mb(); |
| #ifdef DWC2_LOG_WRITES |
| pr_info("INFO:: wrote %08x to %p\n", value, addr); |
| #endif |
| } |
| #else |
| /* Normal architectures just use readl/write */ |
| static inline u32 dwc2_readl(const void __iomem *addr) |
| { |
| return readl(addr); |
| } |
| |
| static inline void dwc2_writel(u32 value, void __iomem *addr) |
| { |
| writel(value, addr); |
| |
| #ifdef DWC2_LOG_WRITES |
| pr_info("info:: wrote %08x to %p\n", value, addr); |
| #endif |
| } |
| #endif |
| |
| /* Maximum number of Endpoints/HostChannels */ |
| #define MAX_EPS_CHANNELS 16 |
| |
| /* dwc2-hsotg declarations */ |
| static const char * const dwc2_hsotg_supply_names[] = { |
| "vusb_d", /* digital USB supply, 1.2V */ |
| "vusb_a", /* analog USB supply, 1.1V */ |
| }; |
| |
| #define DWC2_NUM_SUPPLIES ARRAY_SIZE(dwc2_hsotg_supply_names) |
| |
| /* |
| * EP0_MPS_LIMIT |
| * |
| * Unfortunately there seems to be a limit of the amount of data that can |
| * be transferred by IN transactions on EP0. This is either 127 bytes or 3 |
| * packets (which practically means 1 packet and 63 bytes of data) when the |
| * MPS is set to 64. |
| * |
| * This means if we are wanting to move >127 bytes of data, we need to |
| * split the transactions up, but just doing one packet at a time does |
| * not work (this may be an implicit DATA0 PID on first packet of the |
| * transaction) and doing 2 packets is outside the controller's limits. |
| * |
| * If we try to lower the MPS size for EP0, then no transfers work properly |
| * for EP0, and the system will fail basic enumeration. As no cause for this |
| * has currently been found, we cannot support any large IN transfers for |
| * EP0. |
| */ |
| #define EP0_MPS_LIMIT 64 |
| |
| struct dwc2_hsotg; |
| struct dwc2_hsotg_req; |
| |
| /** |
| * struct dwc2_hsotg_ep - driver endpoint definition. |
| * @ep: The gadget layer representation of the endpoint. |
| * @name: The driver generated name for the endpoint. |
| * @queue: Queue of requests for this endpoint. |
| * @parent: Reference back to the parent device structure. |
| * @req: The current request that the endpoint is processing. This is |
| * used to indicate an request has been loaded onto the endpoint |
| * and has yet to be completed (maybe due to data move, or simply |
| * awaiting an ack from the core all the data has been completed). |
| * @debugfs: File entry for debugfs file for this endpoint. |
| * @lock: State lock to protect contents of endpoint. |
| * @dir_in: Set to true if this endpoint is of the IN direction, which |
| * means that it is sending data to the Host. |
| * @index: The index for the endpoint registers. |
| * @mc: Multi Count - number of transactions per microframe |
| * @interval - Interval for periodic endpoints, in frames or microframes. |
| * @name: The name array passed to the USB core. |
| * @halted: Set if the endpoint has been halted. |
| * @periodic: Set if this is a periodic ep, such as Interrupt |
| * @isochronous: Set if this is a isochronous ep |
| * @send_zlp: Set if we need to send a zero-length packet. |
| * @desc_list_dma: The DMA address of descriptor chain currently in use. |
| * @desc_list: Pointer to descriptor DMA chain head currently in use. |
| * @desc_count: Count of entries within the DMA descriptor chain of EP. |
| * @isoc_chain_num: Number of ISOC chain currently in use - either 0 or 1. |
| * @next_desc: index of next free descriptor in the ISOC chain under SW control. |
| * @total_data: The total number of data bytes done. |
| * @fifo_size: The size of the FIFO (for periodic IN endpoints) |
| * @fifo_load: The amount of data loaded into the FIFO (periodic IN) |
| * @last_load: The offset of data for the last start of request. |
| * @size_loaded: The last loaded size for DxEPTSIZE for periodic IN |
| * @target_frame: Targeted frame num to setup next ISOC transfer |
| * @frame_overrun: Indicates SOF number overrun in DSTS |
| * |
| * This is the driver's state for each registered enpoint, allowing it |
| * to keep track of transactions that need doing. Each endpoint has a |
| * lock to protect the state, to try and avoid using an overall lock |
| * for the host controller as much as possible. |
| * |
| * For periodic IN endpoints, we have fifo_size and fifo_load to try |
| * and keep track of the amount of data in the periodic FIFO for each |
| * of these as we don't have a status register that tells us how much |
| * is in each of them. (note, this may actually be useless information |
| * as in shared-fifo mode periodic in acts like a single-frame packet |
| * buffer than a fifo) |
| */ |
| struct dwc2_hsotg_ep { |
| struct usb_ep ep; |
| struct list_head queue; |
| struct dwc2_hsotg *parent; |
| struct dwc2_hsotg_req *req; |
| struct dentry *debugfs; |
| |
| unsigned long total_data; |
| unsigned int size_loaded; |
| unsigned int last_load; |
| unsigned int fifo_load; |
| unsigned short fifo_size; |
| unsigned short fifo_index; |
| |
| unsigned char dir_in; |
| unsigned char index; |
| unsigned char mc; |
| u16 interval; |
| |
| unsigned int halted:1; |
| unsigned int periodic:1; |
| unsigned int isochronous:1; |
| unsigned int send_zlp:1; |
| unsigned int target_frame; |
| #define TARGET_FRAME_INITIAL 0xFFFFFFFF |
| bool frame_overrun; |
| |
| dma_addr_t desc_list_dma; |
| struct dwc2_dma_desc *desc_list; |
| u8 desc_count; |
| |
| unsigned char isoc_chain_num; |
| unsigned int next_desc; |
| |
| char name[10]; |
| }; |
| |
| /** |
| * struct dwc2_hsotg_req - data transfer request |
| * @req: The USB gadget request |
| * @queue: The list of requests for the endpoint this is queued for. |
| * @saved_req_buf: variable to save req.buf when bounce buffers are used. |
| */ |
| struct dwc2_hsotg_req { |
| struct usb_request req; |
| struct list_head queue; |
| void *saved_req_buf; |
| }; |
| |
| #if IS_ENABLED(CONFIG_USB_DWC2_PERIPHERAL) || \ |
| IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE) |
| #define call_gadget(_hs, _entry) \ |
| do { \ |
| if ((_hs)->gadget.speed != USB_SPEED_UNKNOWN && \ |
| (_hs)->driver && (_hs)->driver->_entry) { \ |
| spin_unlock(&_hs->lock); \ |
| (_hs)->driver->_entry(&(_hs)->gadget); \ |
| spin_lock(&_hs->lock); \ |
| } \ |
| } while (0) |
| #else |
| #define call_gadget(_hs, _entry) do {} while (0) |
| #endif |
| |
| struct dwc2_hsotg; |
| struct dwc2_host_chan; |
| |
| /* Device States */ |
| enum dwc2_lx_state { |
| DWC2_L0, /* On state */ |
| DWC2_L1, /* LPM sleep state */ |
| DWC2_L2, /* USB suspend state */ |
| DWC2_L3, /* Off state */ |
| }; |
| |
| /* Gadget ep0 states */ |
| enum dwc2_ep0_state { |
| DWC2_EP0_SETUP, |
| DWC2_EP0_DATA_IN, |
| DWC2_EP0_DATA_OUT, |
| DWC2_EP0_STATUS_IN, |
| DWC2_EP0_STATUS_OUT, |
| }; |
| |
| /** |
| * struct dwc2_core_params - Parameters for configuring the core |
| * |
| * @otg_cap: Specifies the OTG capabilities. |
| * 0 - HNP and SRP capable |
| * 1 - SRP Only capable |
| * 2 - No HNP/SRP capable (always available) |
| * Defaults to best available option (0, 1, then 2) |
| * @host_dma: Specifies whether to use slave or DMA mode for accessing |
| * the data FIFOs. The driver will automatically detect the |
| * value for this parameter if none is specified. |
| * 0 - Slave (always available) |
| * 1 - DMA (default, if available) |
| * @dma_desc_enable: When DMA mode is enabled, specifies whether to use |
| * address DMA mode or descriptor DMA mode for accessing |
| * the data FIFOs. The driver will automatically detect the |
| * value for this if none is specified. |
| * 0 - Address DMA |
| * 1 - Descriptor DMA (default, if available) |
| * @dma_desc_fs_enable: When DMA mode is enabled, specifies whether to use |
| * address DMA mode or descriptor DMA mode for accessing |
| * the data FIFOs in Full Speed mode only. The driver |
| * will automatically detect the value for this if none is |
| * specified. |
| * 0 - Address DMA |
| * 1 - Descriptor DMA in FS (default, if available) |
| * @speed: Specifies the maximum speed of operation in host and |
| * device mode. The actual speed depends on the speed of |
| * the attached device and the value of phy_type. |
| * 0 - High Speed |
| * (default when phy_type is UTMI+ or ULPI) |
| * 1 - Full Speed |
| * (default when phy_type is Full Speed) |
| * @enable_dynamic_fifo: 0 - Use coreConsultant-specified FIFO size parameters |
| * 1 - Allow dynamic FIFO sizing (default, if available) |
| * @en_multiple_tx_fifo: Specifies whether dedicated per-endpoint transmit FIFOs |
| * are enabled for non-periodic IN endpoints in device |
| * mode. |
| * @host_rx_fifo_size: Number of 4-byte words in the Rx FIFO in host mode when |
| * dynamic FIFO sizing is enabled |
| * 16 to 32768 |
| * Actual maximum value is autodetected and also |
| * the default. |
| * @host_nperio_tx_fifo_size: Number of 4-byte words in the non-periodic Tx FIFO |
| * in host mode when dynamic FIFO sizing is enabled |
| * 16 to 32768 |
| * Actual maximum value is autodetected and also |
| * the default. |
| * @host_perio_tx_fifo_size: Number of 4-byte words in the periodic Tx FIFO in |
| * host mode when dynamic FIFO sizing is enabled |
| * 16 to 32768 |
| * Actual maximum value is autodetected and also |
| * the default. |
| * @max_transfer_size: The maximum transfer size supported, in bytes |
| * 2047 to 65,535 |
| * Actual maximum value is autodetected and also |
| * the default. |
| * @max_packet_count: The maximum number of packets in a transfer |
| * 15 to 511 |
| * Actual maximum value is autodetected and also |
| * the default. |
| * @host_channels: The number of host channel registers to use |
| * 1 to 16 |
| * Actual maximum value is autodetected and also |
| * the default. |
| * @phy_type: Specifies the type of PHY interface to use. By default, |
| * the driver will automatically detect the phy_type. |
| * 0 - Full Speed Phy |
| * 1 - UTMI+ Phy |
| * 2 - ULPI Phy |
| * Defaults to best available option (2, 1, then 0) |
| * @phy_utmi_width: Specifies the UTMI+ Data Width (in bits). This parameter |
| * is applicable for a phy_type of UTMI+ or ULPI. (For a |
| * ULPI phy_type, this parameter indicates the data width |
| * between the MAC and the ULPI Wrapper.) Also, this |
| * parameter is applicable only if the OTG_HSPHY_WIDTH cC |
| * parameter was set to "8 and 16 bits", meaning that the |
| * core has been configured to work at either data path |
| * width. |
| * 8 or 16 (default 16 if available) |
| * @phy_ulpi_ddr: Specifies whether the ULPI operates at double or single |
| * data rate. This parameter is only applicable if phy_type |
| * is ULPI. |
| * 0 - single data rate ULPI interface with 8 bit wide |
| * data bus (default) |
| * 1 - double data rate ULPI interface with 4 bit wide |
| * data bus |
| * @phy_ulpi_ext_vbus: For a ULPI phy, specifies whether to use the internal or |
| * external supply to drive the VBus |
| * 0 - Internal supply (default) |
| * 1 - External supply |
| * @i2c_enable: Specifies whether to use the I2Cinterface for a full |
| * speed PHY. This parameter is only applicable if phy_type |
| * is FS. |
| * 0 - No (default) |
| * 1 - Yes |
| * @ulpi_fs_ls: Make ULPI phy operate in FS/LS mode only |
| * 0 - No (default) |
| * 1 - Yes |
| * @host_support_fs_ls_low_power: Specifies whether low power mode is supported |
| * when attached to a Full Speed or Low Speed device in |
| * host mode. |
| * 0 - Don't support low power mode (default) |
| * 1 - Support low power mode |
| * @host_ls_low_power_phy_clk: Specifies the PHY clock rate in low power mode |
| * when connected to a Low Speed device in host |
| * mode. This parameter is applicable only if |
| * host_support_fs_ls_low_power is enabled. |
| * 0 - 48 MHz |
| * (default when phy_type is UTMI+ or ULPI) |
| * 1 - 6 MHz |
| * (default when phy_type is Full Speed) |
| * @ts_dline: Enable Term Select Dline pulsing |
| * 0 - No (default) |
| * 1 - Yes |
| * @reload_ctl: Allow dynamic reloading of HFIR register during runtime |
| * 0 - No (default for core < 2.92a) |
| * 1 - Yes (default for core >= 2.92a) |
| * @ahbcfg: This field allows the default value of the GAHBCFG |
| * register to be overridden |
| * -1 - GAHBCFG value will be set to 0x06 |
| * (INCR4, default) |
| * all others - GAHBCFG value will be overridden with |
| * this value |
| * Not all bits can be controlled like this, the |
| * bits defined by GAHBCFG_CTRL_MASK are controlled |
| * by the driver and are ignored in this |
| * configuration value. |
| * @uframe_sched: True to enable the microframe scheduler |
| * @external_id_pin_ctl: Specifies whether ID pin is handled externally. |
| * Disable CONIDSTSCHNG controller interrupt in such |
| * case. |
| * 0 - No (default) |
| * 1 - Yes |
| * @hibernation: Specifies whether the controller support hibernation. |
| * If hibernation is enabled, the controller will enter |
| * hibernation in both peripheral and host mode when |
| * needed. |
| * 0 - No (default) |
| * 1 - Yes |
| * @activate_stm_fs_transceiver: Activate internal transceiver using GGPIO |
| * register. |
| * 0 - Deactivate the transceiver (default) |
| * 1 - Activate the transceiver |
| * @g_dma: Enables gadget dma usage (default: autodetect). |
| * @g_dma_desc: Enables gadget descriptor DMA (default: autodetect). |
| * @g_rx_fifo_size: The periodic rx fifo size for the device, in |
| * DWORDS from 16-32768 (default: 2048 if |
| * possible, otherwise autodetect). |
| * @g_np_tx_fifo_size: The non-periodic tx fifo size for the device in |
| * DWORDS from 16-32768 (default: 1024 if |
| * possible, otherwise autodetect). |
| * @g_tx_fifo_size: An array of TX fifo sizes in dedicated fifo |
| * mode. Each value corresponds to one EP |
| * starting from EP1 (max 15 values). Sizes are |
| * in DWORDS with possible values from from |
| * 16-32768 (default: 256, 256, 256, 256, 768, |
| * 768, 768, 768, 0, 0, 0, 0, 0, 0, 0). |
| * @change_speed_quirk: Change speed configuration to DWC2_SPEED_PARAM_FULL |
| * while full&low speed device connect. And change speed |
| * back to DWC2_SPEED_PARAM_HIGH while device is gone. |
| * 0 - No (default) |
| * 1 - Yes |
| * |
| * The following parameters may be specified when starting the module. These |
| * parameters define how the DWC_otg controller should be configured. A |
| * value of -1 (or any other out of range value) for any parameter means |
| * to read the value from hardware (if possible) or use the builtin |
| * default described above. |
| */ |
| struct dwc2_core_params { |
| u8 otg_cap; |
| #define DWC2_CAP_PARAM_HNP_SRP_CAPABLE 0 |
| #define DWC2_CAP_PARAM_SRP_ONLY_CAPABLE 1 |
| #define DWC2_CAP_PARAM_NO_HNP_SRP_CAPABLE 2 |
| |
| u8 phy_type; |
| #define DWC2_PHY_TYPE_PARAM_FS 0 |
| #define DWC2_PHY_TYPE_PARAM_UTMI 1 |
| #define DWC2_PHY_TYPE_PARAM_ULPI 2 |
| |
| u8 speed; |
| #define DWC2_SPEED_PARAM_HIGH 0 |
| #define DWC2_SPEED_PARAM_FULL 1 |
| #define DWC2_SPEED_PARAM_LOW 2 |
| |
| u8 phy_utmi_width; |
| bool phy_ulpi_ddr; |
| bool phy_ulpi_ext_vbus; |
| bool enable_dynamic_fifo; |
| bool en_multiple_tx_fifo; |
| bool i2c_enable; |
| bool ulpi_fs_ls; |
| bool ts_dline; |
| bool reload_ctl; |
| bool uframe_sched; |
| bool external_id_pin_ctl; |
| bool hibernation; |
| bool activate_stm_fs_transceiver; |
| u16 max_packet_count; |
| u32 max_transfer_size; |
| u32 ahbcfg; |
| |
| /* Host parameters */ |
| bool host_dma; |
| bool dma_desc_enable; |
| bool dma_desc_fs_enable; |
| bool host_support_fs_ls_low_power; |
| bool host_ls_low_power_phy_clk; |
| |
| u8 host_channels; |
| u16 host_rx_fifo_size; |
| u16 host_nperio_tx_fifo_size; |
| u16 host_perio_tx_fifo_size; |
| |
| /* Gadget parameters */ |
| bool g_dma; |
| bool g_dma_desc; |
| u32 g_rx_fifo_size; |
| u32 g_np_tx_fifo_size; |
| u32 g_tx_fifo_size[MAX_EPS_CHANNELS]; |
| |
| bool change_speed_quirk; |
| }; |
| |
| /** |
| * struct dwc2_hw_params - Autodetected parameters. |
| * |
| * These parameters are the various parameters read from hardware |
| * registers during initialization. They typically contain the best |
| * supported or maximum value that can be configured in the |
| * corresponding dwc2_core_params value. |
| * |
| * The values that are not in dwc2_core_params are documented below. |
| * |
| * @op_mode Mode of Operation |
| * 0 - HNP- and SRP-Capable OTG (Host & Device) |
| * 1 - SRP-Capable OTG (Host & Device) |
| * 2 - Non-HNP and Non-SRP Capable OTG (Host & Device) |
| * 3 - SRP-Capable Device |
| * 4 - Non-OTG Device |
| * 5 - SRP-Capable Host |
| * 6 - Non-OTG Host |
| * @arch Architecture |
| * 0 - Slave only |
| * 1 - External DMA |
| * 2 - Internal DMA |
| * @power_optimized Are power optimizations enabled? |
| * @num_dev_ep Number of device endpoints available |
| * @num_dev_perio_in_ep Number of device periodic IN endpoints |
| * available |
| * @dev_token_q_depth Device Mode IN Token Sequence Learning Queue |
| * Depth |
| * 0 to 30 |
| * @host_perio_tx_q_depth |
| * Host Mode Periodic Request Queue Depth |
| * 2, 4 or 8 |
| * @nperio_tx_q_depth |
| * Non-Periodic Request Queue Depth |
| * 2, 4 or 8 |
| * @hs_phy_type High-speed PHY interface type |
| * 0 - High-speed interface not supported |
| * 1 - UTMI+ |
| * 2 - ULPI |
| * 3 - UTMI+ and ULPI |
| * @fs_phy_type Full-speed PHY interface type |
| * 0 - Full speed interface not supported |
| * 1 - Dedicated full speed interface |
| * 2 - FS pins shared with UTMI+ pins |
| * 3 - FS pins shared with ULPI pins |
| * @total_fifo_size: Total internal RAM for FIFOs (bytes) |
| * @utmi_phy_data_width UTMI+ PHY data width |
| * 0 - 8 bits |
| * 1 - 16 bits |
| * 2 - 8 or 16 bits |
| * @snpsid: Value from SNPSID register |
| * @dev_ep_dirs: Direction of device endpoints (GHWCFG1) |
| */ |
| struct dwc2_hw_params { |
| unsigned op_mode:3; |
| unsigned arch:2; |
| unsigned dma_desc_enable:1; |
| unsigned enable_dynamic_fifo:1; |
| unsigned en_multiple_tx_fifo:1; |
| unsigned rx_fifo_size:16; |
| unsigned host_nperio_tx_fifo_size:16; |
| unsigned dev_nperio_tx_fifo_size:16; |
| unsigned host_perio_tx_fifo_size:16; |
| unsigned nperio_tx_q_depth:3; |
| unsigned host_perio_tx_q_depth:3; |
| unsigned dev_token_q_depth:5; |
| unsigned max_transfer_size:26; |
| unsigned max_packet_count:11; |
| unsigned host_channels:5; |
| unsigned hs_phy_type:2; |
| unsigned fs_phy_type:2; |
| unsigned i2c_enable:1; |
| unsigned num_dev_ep:4; |
| unsigned num_dev_perio_in_ep:4; |
| unsigned total_fifo_size:16; |
| unsigned power_optimized:1; |
| unsigned utmi_phy_data_width:2; |
| u32 snpsid; |
| u32 dev_ep_dirs; |
| }; |
| |
| /* Size of control and EP0 buffers */ |
| #define DWC2_CTRL_BUFF_SIZE 8 |
| |
| /** |
| * struct dwc2_gregs_backup - Holds global registers state before |
| * entering partial power down |
| * @gotgctl: Backup of GOTGCTL register |
| * @gintmsk: Backup of GINTMSK register |
| * @gahbcfg: Backup of GAHBCFG register |
| * @gusbcfg: Backup of GUSBCFG register |
| * @grxfsiz: Backup of GRXFSIZ register |
| * @gnptxfsiz: Backup of GNPTXFSIZ register |
| * @gi2cctl: Backup of GI2CCTL register |
| * @hptxfsiz: Backup of HPTXFSIZ register |
| * @gdfifocfg: Backup of GDFIFOCFG register |
| * @dtxfsiz: Backup of DTXFSIZ registers for each endpoint |
| * @gpwrdn: Backup of GPWRDN register |
| */ |
| struct dwc2_gregs_backup { |
| u32 gotgctl; |
| u32 gintmsk; |
| u32 gahbcfg; |
| u32 gusbcfg; |
| u32 grxfsiz; |
| u32 gnptxfsiz; |
| u32 gi2cctl; |
| u32 hptxfsiz; |
| u32 pcgcctl; |
| u32 gdfifocfg; |
| u32 dtxfsiz[MAX_EPS_CHANNELS]; |
| u32 gpwrdn; |
| bool valid; |
| }; |
| |
| /** |
| * struct dwc2_dregs_backup - Holds device registers state before |
| * entering partial power down |
| * @dcfg: Backup of DCFG register |
| * @dctl: Backup of DCTL register |
| * @daintmsk: Backup of DAINTMSK register |
| * @diepmsk: Backup of DIEPMSK register |
| * @doepmsk: Backup of DOEPMSK register |
| * @diepctl: Backup of DIEPCTL register |
| * @dieptsiz: Backup of DIEPTSIZ register |
| * @diepdma: Backup of DIEPDMA register |
| * @doepctl: Backup of DOEPCTL register |
| * @doeptsiz: Backup of DOEPTSIZ register |
| * @doepdma: Backup of DOEPDMA register |
| */ |
| struct dwc2_dregs_backup { |
| u32 dcfg; |
| u32 dctl; |
| u32 daintmsk; |
| u32 diepmsk; |
| u32 doepmsk; |
| u32 diepctl[MAX_EPS_CHANNELS]; |
| u32 dieptsiz[MAX_EPS_CHANNELS]; |
| u32 diepdma[MAX_EPS_CHANNELS]; |
| u32 doepctl[MAX_EPS_CHANNELS]; |
| u32 doeptsiz[MAX_EPS_CHANNELS]; |
| u32 doepdma[MAX_EPS_CHANNELS]; |
| bool valid; |
| }; |
| |
| /** |
| * struct dwc2_hregs_backup - Holds host registers state before |
| * entering partial power down |
| * @hcfg: Backup of HCFG register |
| * @haintmsk: Backup of HAINTMSK register |
| * @hcintmsk: Backup of HCINTMSK register |
| * @hptr0: Backup of HPTR0 register |
| * @hfir: Backup of HFIR register |
| */ |
| struct dwc2_hregs_backup { |
| u32 hcfg; |
| u32 haintmsk; |
| u32 hcintmsk[MAX_EPS_CHANNELS]; |
| u32 hprt0; |
| u32 hfir; |
| bool valid; |
| }; |
| |
| /* |
| * Constants related to high speed periodic scheduling |
| * |
| * We have a periodic schedule that is DWC2_HS_SCHEDULE_UFRAMES long. From a |
| * reservation point of view it's assumed that the schedule goes right back to |
| * the beginning after the end of the schedule. |
| * |
| * What does that mean for scheduling things with a long interval? It means |
| * we'll reserve time for them in every possible microframe that they could |
| * ever be scheduled in. ...but we'll still only actually schedule them as |
| * often as they were requested. |
| * |
| * We keep our schedule in a "bitmap" structure. This simplifies having |
| * to keep track of and merge intervals: we just let the bitmap code do most |
| * of the heavy lifting. In a way scheduling is much like memory allocation. |
| * |
| * We schedule 100us per uframe or 80% of 125us (the maximum amount you're |
| * supposed to schedule for periodic transfers). That's according to spec. |
| * |
| * Note that though we only schedule 80% of each microframe, the bitmap that we |
| * keep the schedule in is tightly packed (AKA it doesn't have 100us worth of |
| * space for each uFrame). |
| * |
| * Requirements: |
| * - DWC2_HS_SCHEDULE_UFRAMES must even divide 0x4000 (HFNUM_MAX_FRNUM + 1) |
| * - DWC2_HS_SCHEDULE_UFRAMES must be 8 times DWC2_LS_SCHEDULE_FRAMES (probably |
| * could be any multiple of 8 times DWC2_LS_SCHEDULE_FRAMES, but there might |
| * be bugs). The 8 comes from the USB spec: number of microframes per frame. |
| */ |
| #define DWC2_US_PER_UFRAME 125 |
| #define DWC2_HS_PERIODIC_US_PER_UFRAME 100 |
| |
| #define DWC2_HS_SCHEDULE_UFRAMES 8 |
| #define DWC2_HS_SCHEDULE_US (DWC2_HS_SCHEDULE_UFRAMES * \ |
| DWC2_HS_PERIODIC_US_PER_UFRAME) |
| |
| /* |
| * Constants related to low speed scheduling |
| * |
| * For high speed we schedule every 1us. For low speed that's a bit overkill, |
| * so we make up a unit called a "slice" that's worth 25us. There are 40 |
| * slices in a full frame and we can schedule 36 of those (90%) for periodic |
| * transfers. |
| * |
| * Our low speed schedule can be as short as 1 frame or could be longer. When |
| * we only schedule 1 frame it means that we'll need to reserve a time every |
| * frame even for things that only transfer very rarely, so something that runs |
| * every 2048 frames will get time reserved in every frame. Our low speed |
| * schedule can be longer and we'll be able to handle more overlap, but that |
| * will come at increased memory cost and increased time to schedule. |
| * |
| * Note: one other advantage of a short low speed schedule is that if we mess |
| * up and miss scheduling we can jump in and use any of the slots that we |
| * happened to reserve. |
| * |
| * With 25 us per slice and 1 frame in the schedule, we only need 4 bytes for |
| * the schedule. There will be one schedule per TT. |
| * |
| * Requirements: |
| * - DWC2_US_PER_SLICE must evenly divide DWC2_LS_PERIODIC_US_PER_FRAME. |
| */ |
| #define DWC2_US_PER_SLICE 25 |
| #define DWC2_SLICES_PER_UFRAME (DWC2_US_PER_UFRAME / DWC2_US_PER_SLICE) |
| |
| #define DWC2_ROUND_US_TO_SLICE(us) \ |
| (DIV_ROUND_UP((us), DWC2_US_PER_SLICE) * \ |
| DWC2_US_PER_SLICE) |
| |
| #define DWC2_LS_PERIODIC_US_PER_FRAME \ |
| 900 |
| #define DWC2_LS_PERIODIC_SLICES_PER_FRAME \ |
| (DWC2_LS_PERIODIC_US_PER_FRAME / \ |
| DWC2_US_PER_SLICE) |
| |
| #define DWC2_LS_SCHEDULE_FRAMES 1 |
| #define DWC2_LS_SCHEDULE_SLICES (DWC2_LS_SCHEDULE_FRAMES * \ |
| DWC2_LS_PERIODIC_SLICES_PER_FRAME) |
| |
| /** |
| * struct dwc2_hsotg - Holds the state of the driver, including the non-periodic |
| * and periodic schedules |
| * |
| * These are common for both host and peripheral modes: |
| * |
| * @dev: The struct device pointer |
| * @regs: Pointer to controller regs |
| * @hw_params: Parameters that were autodetected from the |
| * hardware registers |
| * @core_params: Parameters that define how the core should be configured |
| * @op_state: The operational State, during transitions (a_host=> |
| * a_peripheral and b_device=>b_host) this may not match |
| * the core, but allows the software to determine |
| * transitions |
| * @dr_mode: Requested mode of operation, one of following: |
| * - USB_DR_MODE_PERIPHERAL |
| * - USB_DR_MODE_HOST |
| * - USB_DR_MODE_OTG |
| * @hcd_enabled Host mode sub-driver initialization indicator. |
| * @gadget_enabled Peripheral mode sub-driver initialization indicator. |
| * @ll_hw_enabled Status of low-level hardware resources. |
| * @phy: The otg phy transceiver structure for phy control. |
| * @uphy: The otg phy transceiver structure for old USB phy |
| * control. |
| * @plat: The platform specific configuration data. This can be |
| * removed once all SoCs support usb transceiver. |
| * @supplies: Definition of USB power supplies |
| * @phyif: PHY interface width |
| * @lock: Spinlock that protects all the driver data structures |
| * @priv: Stores a pointer to the struct usb_hcd |
| * @queuing_high_bandwidth: True if multiple packets of a high-bandwidth |
| * transfer are in process of being queued |
| * @srp_success: Stores status of SRP request in the case of a FS PHY |
| * with an I2C interface |
| * @wq_otg: Workqueue object used for handling of some interrupts |
| * @wf_otg: Work object for handling Connector ID Status Change |
| * interrupt |
| * @wkp_timer: Timer object for handling Wakeup Detected interrupt |
| * @lx_state: Lx state of connected device |
| * @gregs_backup: Backup of global registers during suspend |
| * @dregs_backup: Backup of device registers during suspend |
| * @hregs_backup: Backup of host registers during suspend |
| * |
| * These are for host mode: |
| * |
| * @flags: Flags for handling root port state changes |
| * @non_periodic_sched_inactive: Inactive QHs in the non-periodic schedule. |
| * Transfers associated with these QHs are not currently |
| * assigned to a host channel. |
| * @non_periodic_sched_active: Active QHs in the non-periodic schedule. |
| * Transfers associated with these QHs are currently |
| * assigned to a host channel. |
| * @non_periodic_qh_ptr: Pointer to next QH to process in the active |
| * non-periodic schedule |
| * @periodic_sched_inactive: Inactive QHs in the periodic schedule. This is a |
| * list of QHs for periodic transfers that are _not_ |
| * scheduled for the next frame. Each QH in the list has an |
| * interval counter that determines when it needs to be |
| * scheduled for execution. This scheduling mechanism |
| * allows only a simple calculation for periodic bandwidth |
| * used (i.e. must assume that all periodic transfers may |
| * need to execute in the same frame). However, it greatly |
| * simplifies scheduling and should be sufficient for the |
| * vast majority of OTG hosts, which need to connect to a |
| * small number of peripherals at one time. Items move from |
| * this list to periodic_sched_ready when the QH interval |
| * counter is 0 at SOF. |
| * @periodic_sched_ready: List of periodic QHs that are ready for execution in |
| * the next frame, but have not yet been assigned to host |
| * channels. Items move from this list to |
| * periodic_sched_assigned as host channels become |
| * available during the current frame. |
| * @periodic_sched_assigned: List of periodic QHs to be executed in the next |
| * frame that are assigned to host channels. Items move |
| * from this list to periodic_sched_queued as the |
| * transactions for the QH are queued to the DWC_otg |
| * controller. |
| * @periodic_sched_queued: List of periodic QHs that have been queued for |
| * execution. Items move from this list to either |
| * periodic_sched_inactive or periodic_sched_ready when the |
| * channel associated with the transfer is released. If the |
| * interval for the QH is 1, the item moves to |
| * periodic_sched_ready because it must be rescheduled for |
| * the next frame. Otherwise, the item moves to |
| * periodic_sched_inactive. |
| * @split_order: List keeping track of channels doing splits, in order. |
| * @periodic_usecs: Total bandwidth claimed so far for periodic transfers. |
| * This value is in microseconds per (micro)frame. The |
| * assumption is that all periodic transfers may occur in |
| * the same (micro)frame. |
| * @hs_periodic_bitmap: Bitmap used by the microframe scheduler any time the |
| * host is in high speed mode; low speed schedules are |
| * stored elsewhere since we need one per TT. |
| * @frame_number: Frame number read from the core at SOF. The value ranges |
| * from 0 to HFNUM_MAX_FRNUM. |
| * @periodic_qh_count: Count of periodic QHs, if using several eps. Used for |
| * SOF enable/disable. |
| * @free_hc_list: Free host channels in the controller. This is a list of |
| * struct dwc2_host_chan items. |
| * @periodic_channels: Number of host channels assigned to periodic transfers. |
| * Currently assuming that there is a dedicated host |
| * channel for each periodic transaction and at least one |
| * host channel is available for non-periodic transactions. |
| * @non_periodic_channels: Number of host channels assigned to non-periodic |
| * transfers |
| * @available_host_channels Number of host channels available for the microframe |
| * scheduler to use |
| * @hc_ptr_array: Array of pointers to the host channel descriptors. |
| * Allows accessing a host channel descriptor given the |
| * host channel number. This is useful in interrupt |
| * handlers. |
| * @status_buf: Buffer used for data received during the status phase of |
| * a control transfer. |
| * @status_buf_dma: DMA address for status_buf |
| * @start_work: Delayed work for handling host A-cable connection |
| * @reset_work: Delayed work for handling a port reset |
| * @otg_port: OTG port number |
| * @frame_list: Frame list |
| * @frame_list_dma: Frame list DMA address |
| * @frame_list_sz: Frame list size |
| * @desc_gen_cache: Kmem cache for generic descriptors |
| * @desc_hsisoc_cache: Kmem cache for hs isochronous descriptors |
| * @unaligned_cache: Kmem cache for DMA mode to handle non-aligned buf |
| * |
| * These are for peripheral mode: |
| * |
| * @driver: USB gadget driver |
| * @dedicated_fifos: Set if the hardware has dedicated IN-EP fifos. |
| * @num_of_eps: Number of available EPs (excluding EP0) |
| * @debug_root: Root directrory for debugfs. |
| * @debug_file: Main status file for debugfs. |
| * @debug_testmode: Testmode status file for debugfs. |
| * @debug_fifo: FIFO status file for debugfs. |
| * @ep0_reply: Request used for ep0 reply. |
| * @ep0_buff: Buffer for EP0 reply data, if needed. |
| * @ctrl_buff: Buffer for EP0 control requests. |
| * @ctrl_req: Request for EP0 control packets. |
| * @ep0_state: EP0 control transfers state |
| * @test_mode: USB test mode requested by the host |
| * @setup_desc_dma: EP0 setup stage desc chain DMA address |
| * @setup_desc: EP0 setup stage desc chain pointer |
| * @ctrl_in_desc_dma: EP0 IN data phase desc chain DMA address |
| * @ctrl_in_desc: EP0 IN data phase desc chain pointer |
| * @ctrl_out_desc_dma: EP0 OUT data phase desc chain DMA address |
| * @ctrl_out_desc: EP0 OUT data phase desc chain pointer |
| * @eps: The endpoints being supplied to the gadget framework |
| */ |
| struct dwc2_hsotg { |
| struct device *dev; |
| void __iomem *regs; |
| /** Params detected from hardware */ |
| struct dwc2_hw_params hw_params; |
| /** Params to actually use */ |
| struct dwc2_core_params params; |
| enum usb_otg_state op_state; |
| enum usb_dr_mode dr_mode; |
| unsigned int hcd_enabled:1; |
| unsigned int gadget_enabled:1; |
| unsigned int ll_hw_enabled:1; |
| |
| struct phy *phy; |
| struct usb_phy *uphy; |
| struct dwc2_hsotg_plat *plat; |
| struct regulator_bulk_data supplies[DWC2_NUM_SUPPLIES]; |
| u32 phyif; |
| |
| spinlock_t lock; |
| void *priv; |
| int irq; |
| struct clk *clk; |
| struct reset_control *reset; |
| |
| unsigned int queuing_high_bandwidth:1; |
| unsigned int srp_success:1; |
| |
| struct workqueue_struct *wq_otg; |
| struct work_struct wf_otg; |
| struct timer_list wkp_timer; |
| enum dwc2_lx_state lx_state; |
| struct dwc2_gregs_backup gr_backup; |
| struct dwc2_dregs_backup dr_backup; |
| struct dwc2_hregs_backup hr_backup; |
| |
| struct dentry *debug_root; |
| struct debugfs_regset32 *regset; |
| |
| /* DWC OTG HW Release versions */ |
| #define DWC2_CORE_REV_2_71a 0x4f54271a |
| #define DWC2_CORE_REV_2_90a 0x4f54290a |
| #define DWC2_CORE_REV_2_91a 0x4f54291a |
| #define DWC2_CORE_REV_2_92a 0x4f54292a |
| #define DWC2_CORE_REV_2_94a 0x4f54294a |
| #define DWC2_CORE_REV_3_00a 0x4f54300a |
| #define DWC2_CORE_REV_3_10a 0x4f54310a |
| #define DWC2_FS_IOT_REV_1_00a 0x5531100a |
| #define DWC2_HS_IOT_REV_1_00a 0x5532100a |
| |
| #if IS_ENABLED(CONFIG_USB_DWC2_HOST) || IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE) |
| union dwc2_hcd_internal_flags { |
| u32 d32; |
| struct { |
| unsigned port_connect_status_change:1; |
| unsigned port_connect_status:1; |
| unsigned port_reset_change:1; |
| unsigned port_enable_change:1; |
| unsigned port_suspend_change:1; |
| unsigned port_over_current_change:1; |
| unsigned port_l1_change:1; |
| unsigned reserved:25; |
| } b; |
| } flags; |
| |
| struct list_head non_periodic_sched_inactive; |
| struct list_head non_periodic_sched_active; |
| struct list_head *non_periodic_qh_ptr; |
| struct list_head periodic_sched_inactive; |
| struct list_head periodic_sched_ready; |
| struct list_head periodic_sched_assigned; |
| struct list_head periodic_sched_queued; |
| struct list_head split_order; |
| u16 periodic_usecs; |
| unsigned long hs_periodic_bitmap[ |
| DIV_ROUND_UP(DWC2_HS_SCHEDULE_US, BITS_PER_LONG)]; |
| u16 frame_number; |
| u16 periodic_qh_count; |
| bool bus_suspended; |
| bool new_connection; |
| |
| u16 last_frame_num; |
| |
| #ifdef CONFIG_USB_DWC2_TRACK_MISSED_SOFS |
| #define FRAME_NUM_ARRAY_SIZE 1000 |
| u16 *frame_num_array; |
| u16 *last_frame_num_array; |
| int frame_num_idx; |
| int dumped_frame_num_array; |
| #endif |
| |
| struct list_head free_hc_list; |
| int periodic_channels; |
| int non_periodic_channels; |
| int available_host_channels; |
| struct dwc2_host_chan *hc_ptr_array[MAX_EPS_CHANNELS]; |
| u8 *status_buf; |
| dma_addr_t status_buf_dma; |
| #define DWC2_HCD_STATUS_BUF_SIZE 64 |
| |
| struct delayed_work start_work; |
| struct delayed_work reset_work; |
| u8 otg_port; |
| u32 *frame_list; |
| dma_addr_t frame_list_dma; |
| u32 frame_list_sz; |
| struct kmem_cache *desc_gen_cache; |
| struct kmem_cache *desc_hsisoc_cache; |
| struct kmem_cache *unaligned_cache; |
| #define DWC2_KMEM_UNALIGNED_BUF_SIZE 1024 |
| |
| #ifdef DEBUG |
| u32 frrem_samples; |
| u64 frrem_accum; |
| |
| u32 hfnum_7_samples_a; |
| u64 hfnum_7_frrem_accum_a; |
| u32 hfnum_0_samples_a; |
| u64 hfnum_0_frrem_accum_a; |
| u32 hfnum_other_samples_a; |
| u64 hfnum_other_frrem_accum_a; |
| |
| u32 hfnum_7_samples_b; |
| u64 hfnum_7_frrem_accum_b; |
| u32 hfnum_0_samples_b; |
| u64 hfnum_0_frrem_accum_b; |
| u32 hfnum_other_samples_b; |
| u64 hfnum_other_frrem_accum_b; |
| #endif |
| #endif /* CONFIG_USB_DWC2_HOST || CONFIG_USB_DWC2_DUAL_ROLE */ |
| |
| #if IS_ENABLED(CONFIG_USB_DWC2_PERIPHERAL) || \ |
| IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE) |
| /* Gadget structures */ |
| struct usb_gadget_driver *driver; |
| int fifo_mem; |
| unsigned int dedicated_fifos:1; |
| unsigned char num_of_eps; |
| u32 fifo_map; |
| |
| struct usb_request *ep0_reply; |
| struct usb_request *ctrl_req; |
| void *ep0_buff; |
| void *ctrl_buff; |
| enum dwc2_ep0_state ep0_state; |
| u8 test_mode; |
| |
| dma_addr_t setup_desc_dma[2]; |
| struct dwc2_dma_desc *setup_desc[2]; |
| dma_addr_t ctrl_in_desc_dma; |
| struct dwc2_dma_desc *ctrl_in_desc; |
| dma_addr_t ctrl_out_desc_dma; |
| struct dwc2_dma_desc *ctrl_out_desc; |
| |
| struct usb_gadget gadget; |
| unsigned int enabled:1; |
| unsigned int connected:1; |
| struct dwc2_hsotg_ep *eps_in[MAX_EPS_CHANNELS]; |
| struct dwc2_hsotg_ep *eps_out[MAX_EPS_CHANNELS]; |
| #endif /* CONFIG_USB_DWC2_PERIPHERAL || CONFIG_USB_DWC2_DUAL_ROLE */ |
| }; |
| |
| /* Reasons for halting a host channel */ |
| enum dwc2_halt_status { |
| DWC2_HC_XFER_NO_HALT_STATUS, |
| DWC2_HC_XFER_COMPLETE, |
| DWC2_HC_XFER_URB_COMPLETE, |
| DWC2_HC_XFER_ACK, |
| DWC2_HC_XFER_NAK, |
| DWC2_HC_XFER_NYET, |
| DWC2_HC_XFER_STALL, |
| DWC2_HC_XFER_XACT_ERR, |
| DWC2_HC_XFER_FRAME_OVERRUN, |
| DWC2_HC_XFER_BABBLE_ERR, |
| DWC2_HC_XFER_DATA_TOGGLE_ERR, |
| DWC2_HC_XFER_AHB_ERR, |
| DWC2_HC_XFER_PERIODIC_INCOMPLETE, |
| DWC2_HC_XFER_URB_DEQUEUE, |
| }; |
| |
| /* Core version information */ |
| static inline bool dwc2_is_iot(struct dwc2_hsotg *hsotg) |
| { |
| return (hsotg->hw_params.snpsid & 0xfff00000) == 0x55300000; |
| } |
| |
| static inline bool dwc2_is_fs_iot(struct dwc2_hsotg *hsotg) |
| { |
| return (hsotg->hw_params.snpsid & 0xffff0000) == 0x55310000; |
| } |
| |
| static inline bool dwc2_is_hs_iot(struct dwc2_hsotg *hsotg) |
| { |
| return (hsotg->hw_params.snpsid & 0xffff0000) == 0x55320000; |
| } |
| |
| /* |
| * The following functions support initialization of the core driver component |
| * and the DWC_otg controller |
| */ |
| int dwc2_core_reset(struct dwc2_hsotg *hsotg, bool skip_wait); |
| int dwc2_core_reset_and_force_dr_mode(struct dwc2_hsotg *hsotg); |
| int dwc2_enter_hibernation(struct dwc2_hsotg *hsotg); |
| int dwc2_exit_hibernation(struct dwc2_hsotg *hsotg, bool restore); |
| |
| bool dwc2_force_mode_if_needed(struct dwc2_hsotg *hsotg, bool host); |
| void dwc2_clear_force_mode(struct dwc2_hsotg *hsotg); |
| void dwc2_force_dr_mode(struct dwc2_hsotg *hsotg); |
| |
| bool dwc2_is_controller_alive(struct dwc2_hsotg *hsotg); |
| |
| /* |
| * Common core Functions. |
| * The following functions support managing the DWC_otg controller in either |
| * device or host mode. |
| */ |
| void dwc2_read_packet(struct dwc2_hsotg *hsotg, u8 *dest, u16 bytes); |
| void dwc2_flush_tx_fifo(struct dwc2_hsotg *hsotg, const int num); |
| void dwc2_flush_rx_fifo(struct dwc2_hsotg *hsotg); |
| |
| void dwc2_enable_global_interrupts(struct dwc2_hsotg *hcd); |
| void dwc2_disable_global_interrupts(struct dwc2_hsotg *hcd); |
| |
| /* This function should be called on every hardware interrupt. */ |
| irqreturn_t dwc2_handle_common_intr(int irq, void *dev); |
| |
| /* The device ID match table */ |
| extern const struct of_device_id dwc2_of_match_table[]; |
| |
| int dwc2_lowlevel_hw_enable(struct dwc2_hsotg *hsotg); |
| int dwc2_lowlevel_hw_disable(struct dwc2_hsotg *hsotg); |
| |
| /* Parameters */ |
| int dwc2_get_hwparams(struct dwc2_hsotg *hsotg); |
| int dwc2_init_params(struct dwc2_hsotg *hsotg); |
| |
| /* |
| * The following functions check the controller's OTG operation mode |
| * capability (GHWCFG2.OTG_MODE). |
| * |
| * These functions can be used before the internal hsotg->hw_params |
| * are read in and cached so they always read directly from the |
| * GHWCFG2 register. |
| */ |
| unsigned int dwc2_op_mode(struct dwc2_hsotg *hsotg); |
| bool dwc2_hw_is_otg(struct dwc2_hsotg *hsotg); |
| bool dwc2_hw_is_host(struct dwc2_hsotg *hsotg); |
| bool dwc2_hw_is_device(struct dwc2_hsotg *hsotg); |
| |
| /* |
| * Returns the mode of operation, host or device |
| */ |
| static inline int dwc2_is_host_mode(struct dwc2_hsotg *hsotg) |
| { |
| return (dwc2_readl(hsotg->regs + GINTSTS) & GINTSTS_CURMODE_HOST) != 0; |
| } |
| |
| static inline int dwc2_is_device_mode(struct dwc2_hsotg *hsotg) |
| { |
| return (dwc2_readl(hsotg->regs + GINTSTS) & GINTSTS_CURMODE_HOST) == 0; |
| } |
| |
| /* |
| * Dump core registers and SPRAM |
| */ |
| void dwc2_dump_dev_registers(struct dwc2_hsotg *hsotg); |
| void dwc2_dump_host_registers(struct dwc2_hsotg *hsotg); |
| void dwc2_dump_global_registers(struct dwc2_hsotg *hsotg); |
| |
| /* Gadget defines */ |
| #if IS_ENABLED(CONFIG_USB_DWC2_PERIPHERAL) || \ |
| IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE) |
| int dwc2_hsotg_remove(struct dwc2_hsotg *hsotg); |
| int dwc2_hsotg_suspend(struct dwc2_hsotg *dwc2); |
| int dwc2_hsotg_resume(struct dwc2_hsotg *dwc2); |
| int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq); |
| void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *dwc2, |
| bool reset); |
| void dwc2_hsotg_core_connect(struct dwc2_hsotg *hsotg); |
| void dwc2_hsotg_disconnect(struct dwc2_hsotg *dwc2); |
| int dwc2_hsotg_set_test_mode(struct dwc2_hsotg *hsotg, int testmode); |
| #define dwc2_is_device_connected(hsotg) (hsotg->connected) |
| int dwc2_backup_device_registers(struct dwc2_hsotg *hsotg); |
| int dwc2_restore_device_registers(struct dwc2_hsotg *hsotg); |
| int dwc2_hsotg_tx_fifo_count(struct dwc2_hsotg *hsotg); |
| int dwc2_hsotg_tx_fifo_total_depth(struct dwc2_hsotg *hsotg); |
| int dwc2_hsotg_tx_fifo_average_depth(struct dwc2_hsotg *hsotg); |
| #else |
| static inline int dwc2_hsotg_remove(struct dwc2_hsotg *dwc2) |
| { return 0; } |
| static inline int dwc2_hsotg_suspend(struct dwc2_hsotg *dwc2) |
| { return 0; } |
| static inline int dwc2_hsotg_resume(struct dwc2_hsotg *dwc2) |
| { return 0; } |
| static inline int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq) |
| { return 0; } |
| static inline void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *dwc2, |
| bool reset) {} |
| static inline void dwc2_hsotg_core_connect(struct dwc2_hsotg *hsotg) {} |
| static inline void dwc2_hsotg_disconnect(struct dwc2_hsotg *dwc2) {} |
| static inline int dwc2_hsotg_set_test_mode(struct dwc2_hsotg *hsotg, |
| int testmode) |
| { return 0; } |
| #define dwc2_is_device_connected(hsotg) (0) |
| static inline int dwc2_backup_device_registers(struct dwc2_hsotg *hsotg) |
| { return 0; } |
| static inline int dwc2_restore_device_registers(struct dwc2_hsotg *hsotg) |
| { return 0; } |
| static inline int dwc2_hsotg_tx_fifo_count(struct dwc2_hsotg *hsotg) |
| { return 0; } |
| static inline int dwc2_hsotg_tx_fifo_total_depth(struct dwc2_hsotg *hsotg) |
| { return 0; } |
| static inline int dwc2_hsotg_tx_fifo_average_depth(struct dwc2_hsotg *hsotg) |
| { return 0; } |
| #endif |
| |
| #if IS_ENABLED(CONFIG_USB_DWC2_HOST) || IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE) |
| int dwc2_hcd_get_frame_number(struct dwc2_hsotg *hsotg); |
| int dwc2_hcd_get_future_frame_number(struct dwc2_hsotg *hsotg, int us); |
| void dwc2_hcd_connect(struct dwc2_hsotg *hsotg); |
| void dwc2_hcd_disconnect(struct dwc2_hsotg *hsotg, bool force); |
| void dwc2_hcd_start(struct dwc2_hsotg *hsotg); |
| int dwc2_backup_host_registers(struct dwc2_hsotg *hsotg); |
| int dwc2_restore_host_registers(struct dwc2_hsotg *hsotg); |
| #else |
| static inline int dwc2_hcd_get_frame_number(struct dwc2_hsotg *hsotg) |
| { return 0; } |
| static inline int dwc2_hcd_get_future_frame_number(struct dwc2_hsotg *hsotg, |
| int us) |
| { return 0; } |
| static inline void dwc2_hcd_connect(struct dwc2_hsotg *hsotg) {} |
| static inline void dwc2_hcd_disconnect(struct dwc2_hsotg *hsotg, bool force) {} |
| static inline void dwc2_hcd_start(struct dwc2_hsotg *hsotg) {} |
| static inline void dwc2_hcd_remove(struct dwc2_hsotg *hsotg) {} |
| static inline int dwc2_hcd_init(struct dwc2_hsotg *hsotg) |
| { return 0; } |
| static inline int dwc2_backup_host_registers(struct dwc2_hsotg *hsotg) |
| { return 0; } |
| static inline int dwc2_restore_host_registers(struct dwc2_hsotg *hsotg) |
| { return 0; } |
| |
| #endif |
| |
| #endif /* __DWC2_CORE_H__ */ |
