diff options
| -rw-r--r-- | drivers/hid/intel-thc-hid/Makefile | 1 | ||||
| -rw-r--r-- | drivers/hid/intel-thc-hid/intel-quickspi/quickspi-dev.h | 38 | ||||
| -rw-r--r-- | drivers/hid/intel-thc-hid/intel-quickspi/quickspi-hid.c | 17 | ||||
| -rw-r--r-- | drivers/hid/intel-thc-hid/intel-quickspi/quickspi-protocol.c | 411 | ||||
| -rw-r--r-- | drivers/hid/intel-thc-hid/intel-quickspi/quickspi-protocol.h | 25 | ||||
| -rw-r--r-- | include/linux/hid-over-spi.h | 118 |
6 files changed, 609 insertions, 1 deletions
diff --git a/drivers/hid/intel-thc-hid/Makefile b/drivers/hid/intel-thc-hid/Makefile index 4dd9e815021d..2dba4db70c33 100644 --- a/drivers/hid/intel-thc-hid/Makefile +++ b/drivers/hid/intel-thc-hid/Makefile @@ -12,5 +12,6 @@ intel-thc-objs += intel-thc/intel-thc-dma.o obj-$(CONFIG_INTEL_QUICKSPI) += intel-quickspi.o intel-quickspi-objs += intel-quickspi/pci-quickspi.o intel-quickspi-objs += intel-quickspi/quickspi-hid.o +intel-quickspi-objs += intel-quickspi/quickspi-protocol.o ccflags-y += -I $(src)/intel-thc diff --git a/drivers/hid/intel-thc-hid/intel-quickspi/quickspi-dev.h b/drivers/hid/intel-thc-hid/intel-quickspi/quickspi-dev.h index deb24dd1a0fa..c5257378c1e9 100644 --- a/drivers/hid/intel-thc-hid/intel-quickspi/quickspi-dev.h +++ b/drivers/hid/intel-thc-hid/intel-quickspi/quickspi-dev.h @@ -4,7 +4,12 @@ #ifndef _QUICKSPI_DEV_H_ #define _QUICKSPI_DEV_H_ +#include <linux/bits.h> #include <linux/hid-over-spi.h> +#include <linux/sizes.h> +#include <linux/wait.h> + +#include "quickspi-protocol.h" #define PCI_DEVICE_ID_INTEL_THC_MTL_DEVICE_ID_SPI_PORT1 0x7E49 #define PCI_DEVICE_ID_INTEL_THC_MTL_DEVICE_ID_SPI_PORT2 0x7E4B @@ -92,6 +97,21 @@ struct acpi_device; * @active_ltr_val: THC active LTR value * @low_power_ltr_val: THC low power LTR value * @report_descriptor: store a copy of device report descriptor + * @input_buf: store a copy of latest input report data + * @report_buf: store a copy of latest input/output report packet from set/get feature + * @report_len: the length of input/output report packet + * @reset_ack_wq: workqueue for waiting reset response from device + * @reset_ack: indicate reset response received or not + * @nondma_int_received_wq: workqueue for waiting THC non-DMA interrupt + * @nondma_int_received: indicate THC non-DMA interrupt received or not + * @report_desc_got_wq: workqueue for waiting device report descriptor + * @report_desc_got: indicate device report descritor received or not + * @set_power_on_wq: workqueue for waiting set power on response from device + * @set_power_on: indicate set power on response received or not + * @get_feature_cmpl_wq: workqueue for waiting get feature response from device + * @get_feature_cmpl: indicate get feature received or not + * @set_feature_cmpl_wq: workqueue for waiting set feature to device + * @set_feature_cmpl: indicate set feature send complete or not */ struct quickspi_device { struct device *dev; @@ -121,6 +141,24 @@ struct quickspi_device { u32 low_power_ltr_val; u8 *report_descriptor; + u8 *input_buf; + u8 *report_buf; + u32 report_len; + + wait_queue_head_t reset_ack_wq; + bool reset_ack; + + wait_queue_head_t nondma_int_received_wq; + bool nondma_int_received; + + wait_queue_head_t report_desc_got_wq; + bool report_desc_got; + + wait_queue_head_t get_report_cmpl_wq; + bool get_report_cmpl; + + wait_queue_head_t set_report_cmpl_wq; + bool set_report_cmpl; }; #endif /* _QUICKSPI_DEV_H_ */ diff --git a/drivers/hid/intel-thc-hid/intel-quickspi/quickspi-hid.c b/drivers/hid/intel-thc-hid/intel-quickspi/quickspi-hid.c index eae53a749a38..2553d4b42b51 100644 --- a/drivers/hid/intel-thc-hid/intel-quickspi/quickspi-hid.c +++ b/drivers/hid/intel-thc-hid/intel-quickspi/quickspi-hid.c @@ -51,7 +51,22 @@ static int quickspi_hid_raw_request(struct hid_device *hid, __u8 *buf, size_t len, unsigned char rtype, int reqtype) { - return 0; + struct quickspi_device *qsdev = hid->driver_data; + int ret = 0; + + switch (reqtype) { + case HID_REQ_GET_REPORT: + ret = quickspi_get_report(qsdev, rtype, reportnum, buf); + break; + case HID_REQ_SET_REPORT: + ret = quickspi_set_report(qsdev, rtype, reportnum, buf, len); + break; + default: + dev_err_once(qsdev->dev, "Not supported request type %d\n", reqtype); + break; + } + + return ret; } static int quickspi_hid_power(struct hid_device *hid, int lvl) diff --git a/drivers/hid/intel-thc-hid/intel-quickspi/quickspi-protocol.c b/drivers/hid/intel-thc-hid/intel-quickspi/quickspi-protocol.c new file mode 100644 index 000000000000..ba28b82da385 --- /dev/null +++ b/drivers/hid/intel-thc-hid/intel-quickspi/quickspi-protocol.c @@ -0,0 +1,411 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright © 2024 Intel Corporation */ + +#include <linux/acpi.h> +#include <linux/bitfield.h> +#include <linux/delay.h> +#include <linux/hid.h> + +#include "intel-thc-dev.h" +#include "intel-thc-dma.h" + +#include "quickspi-dev.h" +#include "quickspi-hid.h" +#include "quickspi-protocol.h" + +/* THC uses HW to accelerate HID over SPI protocol, THC_M_PRT_DEV_INT_CAUSE + * register is used to store message header and body header, below definition + * let driver retrieve needed data filed easier from THC_M_PRT_DEV_INT_CAUSE + * register. + */ +#define HIDSPI_IN_REP_BDY_HDR_REP_TYPE GENMASK(7, 0) + +static int write_cmd_to_txdma(struct quickspi_device *qsdev, + int report_type, int report_id, + u8 *report_buf, const int report_buf_len) +{ + struct output_report *write_buf; + int write_buf_len; + int ret; + + write_buf = (struct output_report *)qsdev->report_buf; + + write_buf->output_hdr.report_type = report_type; + write_buf->output_hdr.content_len = cpu_to_le16(report_buf_len); + write_buf->output_hdr.content_id = report_id; + + if (report_buf && report_buf_len > 0) + memcpy(write_buf->content, report_buf, report_buf_len); + + write_buf_len = HIDSPI_OUTPUT_REPORT_SIZE(report_buf_len); + + ret = thc_dma_write(qsdev->thc_hw, write_buf, write_buf_len); + if (ret) + dev_err_once(qsdev->dev, "DMA write failed, ret = %d\n", ret); + + return ret; +} + +static int quickspi_get_device_descriptor(struct quickspi_device *qsdev) +{ + u8 read_buf[HIDSPI_INPUT_DEVICE_DESCRIPTOR_SIZE]; + struct output_report output_rep; + u32 input_len, read_len = 0; + u32 int_cause_val; + u8 input_rep_type; + int ret; + + output_rep.output_hdr.report_type = DEVICE_DESCRIPTOR; + output_rep.output_hdr.content_len = 0; + output_rep.output_hdr.content_id = 0; + + qsdev->nondma_int_received = false; + + ret = thc_tic_pio_write(qsdev->thc_hw, qsdev->output_report_addr, + HIDSPI_OUTPUT_REPORT_SIZE(0), (u32 *)&output_rep); + if (ret) { + dev_err_once(qsdev->dev, + "Write DEVICE_DESCRIPTOR command failed, ret = %d\n", ret); + return ret; + } + + ret = wait_event_interruptible_timeout(qsdev->nondma_int_received_wq, + qsdev->nondma_int_received, + QUICKSPI_ACK_WAIT_TIMEOUT * HZ); + if (ret <= 0 || !qsdev->nondma_int_received) { + dev_err_once(qsdev->dev, "Wait DEVICE_DESCRIPTOR timeout, ret:%d\n", ret); + return -ETIMEDOUT; + } + qsdev->nondma_int_received = false; + + int_cause_val = thc_int_cause_read(qsdev->thc_hw); + input_len = FIELD_GET(HIDSPI_INPUT_HEADER_REPORT_LEN, int_cause_val); + + input_len = input_len * sizeof(u32); + if (input_len != HIDSPI_INPUT_DEVICE_DESCRIPTOR_SIZE) { + dev_err_once(qsdev->dev, "Receive wrong DEVICE_DESCRIPTOR length, len = %u\n", + input_len); + return -EINVAL; + } + + ret = thc_tic_pio_read(qsdev->thc_hw, qsdev->input_report_bdy_addr, + input_len, &read_len, (u32 *)read_buf); + if (ret || read_len != input_len) { + dev_err_once(qsdev->dev, "Read DEVICE_DESCRIPTOR failed, ret = %d\n", ret); + dev_err_once(qsdev->dev, "DEVICE_DESCRIPTOR expected len = %u, actual read = %u\n", + input_len, read_len); + return ret; + } + + input_rep_type = ((struct input_report_body_header *)read_buf)->input_report_type; + + if (input_rep_type == DEVICE_DESCRIPTOR_RESPONSE) { + memcpy(&qsdev->dev_desc, + read_buf + HIDSPI_INPUT_BODY_HEADER_SIZE, + HIDSPI_DEVICE_DESCRIPTOR_SIZE); + + return 0; + } + + dev_err_once(qsdev->dev, "Unexpected intput report type: %d\n", input_rep_type); + return -EINVAL; +} + +int quickspi_get_report_descriptor(struct quickspi_device *qsdev) +{ + int ret; + + ret = write_cmd_to_txdma(qsdev, REPORT_DESCRIPTOR, 0, NULL, 0); + if (ret) { + dev_err_once(qsdev->dev, + "Write REPORT_DESCRIPTOR command failed, ret = %d\n", ret); + return ret; + } + + ret = wait_event_interruptible_timeout(qsdev->report_desc_got_wq, + qsdev->report_desc_got, + QUICKSPI_ACK_WAIT_TIMEOUT * HZ); + if (ret <= 0 || !qsdev->report_desc_got) { + dev_err_once(qsdev->dev, "Wait Report Descriptor timeout, ret:%d\n", ret); + return -ETIMEDOUT; + } + qsdev->report_desc_got = false; + + return 0; +} + +int quickspi_set_power(struct quickspi_device *qsdev, + enum hidspi_power_state power_state) +{ + u8 cmd_content = power_state; + int ret; + + ret = write_cmd_to_txdma(qsdev, COMMAND_CONTENT, + HIDSPI_SET_POWER_CMD_ID, + &cmd_content, + sizeof(cmd_content)); + if (ret) { + dev_err_once(qsdev->dev, "Write SET_POWER command failed, ret = %d\n", ret); + return ret; + } + + return 0; +} + +void quickspi_handle_input_data(struct quickspi_device *qsdev, u32 buf_len) +{ + struct input_report_body_header *body_hdr; + struct input_report_body *input_body; + u8 *input_report; + u32 input_len; + int ret = 0; + + input_body = (struct input_report_body *)qsdev->input_buf; + body_hdr = &input_body->body_hdr; + input_len = le16_to_cpu(body_hdr->content_len); + + if (HIDSPI_INPUT_BODY_SIZE(input_len) > buf_len) { + dev_err_once(qsdev->dev, "Wrong input report length: %u", + input_len); + return; + } + + switch (body_hdr->input_report_type) { + case REPORT_DESCRIPTOR_RESPONSE: + if (input_len != le16_to_cpu(qsdev->dev_desc.rep_desc_len)) { + dev_err_once(qsdev->dev, "Unexpected report descriptor length: %u\n", + input_len); + return; + } + + memcpy(qsdev->report_descriptor, input_body->content, input_len); + + qsdev->report_desc_got = true; + wake_up_interruptible(&qsdev->report_desc_got_wq); + + break; + + case COMMAND_RESPONSE: + if (body_hdr->content_id == HIDSPI_SET_POWER_CMD_ID) { + dev_dbg(qsdev->dev, "Receive set power on response\n"); + } else { + dev_err_once(qsdev->dev, "Unknown command response type: %u\n", + body_hdr->content_id); + } + + break; + + case RESET_RESPONSE: + if (qsdev->state == QUICKSPI_RESETING) { + qsdev->reset_ack = true; + wake_up_interruptible(&qsdev->reset_ack_wq); + dev_dbg(qsdev->dev, "Receive HIR reset response\n"); + } else { + dev_info(qsdev->dev, "Receive DIR\n"); + } + break; + + case GET_FEATURE_RESPONSE: + case GET_INPUT_REPORT_RESPONSE: + qsdev->report_len = sizeof(body_hdr->content_id) + input_len; + input_report = input_body->content - sizeof(body_hdr->content_id); + + memcpy(qsdev->report_buf, input_report, qsdev->report_len); + + qsdev->get_report_cmpl = true; + wake_up_interruptible(&qsdev->get_report_cmpl_wq); + + break; + + case SET_FEATURE_RESPONSE: + case OUTPUT_REPORT_RESPONSE: + qsdev->set_report_cmpl = true; + wake_up_interruptible(&qsdev->set_report_cmpl_wq); + + break; + + case DATA: + if (input_len > le16_to_cpu(qsdev->dev_desc.max_input_len)) { + dev_err_once(qsdev->dev, "Unexpected too large input report length: %u\n", + input_len); + return; + } + + input_len = sizeof(body_hdr->content_id) + input_len; + input_report = input_body->content - sizeof(body_hdr->content_id); + + ret = quickspi_hid_send_report(qsdev, input_report, input_len); + if (ret) + dev_err_once(qsdev->dev, "Failed to send HID input report: %d\n", ret); + + break; + + default: + dev_err_once(qsdev->dev, "Unsupported input report type: %u\n", + body_hdr->input_report_type); + break; + } +} + +static int acpi_tic_reset(struct quickspi_device *qsdev) +{ + acpi_status status = 0; + acpi_handle handle; + + if (!qsdev->acpi_dev) + return -ENODEV; + + handle = acpi_device_handle(qsdev->acpi_dev); + status = acpi_execute_simple_method(handle, "_RST", 0); + if (ACPI_FAILURE(status)) { + dev_err_once(qsdev->dev, + "Failed to reset device through ACPI method, ret = %d\n", status); + return -EIO; + } + + return 0; +} + +int reset_tic(struct quickspi_device *qsdev) +{ + u32 actual_read_len, read_len = 0; + u32 input_report_len, reset_response, int_cause_val; + u8 input_rep_type; + int ret; + + qsdev->state = QUICKSPI_RESETING; + + qsdev->reset_ack = false; + + /* First interrupt uses level trigger to avoid missing interrupt */ + thc_int_trigger_type_select(qsdev->thc_hw, false); + + ret = acpi_tic_reset(qsdev); + if (ret) + return ret; + + ret = thc_interrupt_quiesce(qsdev->thc_hw, false); + if (ret) + return ret; + + ret = wait_event_interruptible_timeout(qsdev->reset_ack_wq, + qsdev->reset_ack, + QUICKSPI_ACK_WAIT_TIMEOUT * HZ); + if (ret <= 0 || !qsdev->reset_ack) { + dev_err_once(qsdev->dev, "Wait RESET_RESPONSE timeout, ret:%d\n", ret); + return -ETIMEDOUT; + } + + int_cause_val = thc_int_cause_read(qsdev->thc_hw); + input_report_len = FIELD_GET(HIDSPI_INPUT_HEADER_REPORT_LEN, int_cause_val); + + read_len = input_report_len * sizeof(u32); + if (read_len != HIDSPI_INPUT_BODY_SIZE(0)) { + dev_err_once(qsdev->dev, "Receive wrong RESET_RESPONSE, len = %u\n", + read_len); + return -EINVAL; + } + + /* Switch to edge trigger matching with HIDSPI protocol definition */ + thc_int_trigger_type_select(qsdev->thc_hw, true); + + ret = thc_tic_pio_read(qsdev->thc_hw, qsdev->input_report_bdy_addr, + read_len, &actual_read_len, + (u32 *)&reset_response); + if (ret || actual_read_len != read_len) { + dev_err_once(qsdev->dev, "Read RESET_RESPONSE body failed, ret = %d\n", ret); + dev_err_once(qsdev->dev, "RESET_RESPONSE body expected len = %u, actual = %u\n", + read_len, actual_read_len); + return ret; + } + + input_rep_type = FIELD_GET(HIDSPI_IN_REP_BDY_HDR_REP_TYPE, reset_response); + + if (input_rep_type == RESET_RESPONSE) { + dev_dbg(qsdev->dev, "RESET_RESPONSE received\n"); + } else { + dev_err_once(qsdev->dev, + "Unexpected input report type: %d, expect RESET_RESPONSE\n", + input_rep_type); + return -EINVAL; + } + + qsdev->state = QUICKSPI_RESETED; + + ret = quickspi_get_device_descriptor(qsdev); + if (ret) + return ret; + + return 0; +} + +int quickspi_get_report(struct quickspi_device *qsdev, + u8 report_type, unsigned int report_id, void *buf) +{ + int rep_type; + int ret; + + if (report_type == HID_INPUT_REPORT) { + rep_type = GET_INPUT_REPORT; + } else if (report_type == HID_FEATURE_REPORT) { + rep_type = GET_FEATURE; + } else { + dev_err_once(qsdev->dev, "Unsupported report type for GET REPORT: %d\n", + report_type); + return -EINVAL; + } + + ret = write_cmd_to_txdma(qsdev, rep_type, report_id, NULL, 0); + if (ret) { + dev_err_once(qsdev->dev, "Write GET_REPORT command failed, ret = %d\n", ret); + return ret; + } + + ret = wait_event_interruptible_timeout(qsdev->get_report_cmpl_wq, + qsdev->get_report_cmpl, + QUICKSPI_ACK_WAIT_TIMEOUT * HZ); + if (ret <= 0 || !qsdev->get_report_cmpl) { + dev_err_once(qsdev->dev, "Wait Get Report Response timeout, ret:%d\n", ret); + return -ETIMEDOUT; + } + qsdev->get_report_cmpl = false; + + memcpy(buf, qsdev->report_buf, qsdev->report_len); + + return qsdev->report_len; +} + +int quickspi_set_report(struct quickspi_device *qsdev, + u8 report_type, unsigned int report_id, + void *buf, u32 buf_len) +{ + int rep_type; + int ret; + + if (report_type == HID_OUTPUT_REPORT) { + rep_type = OUTPUT_REPORT; + } else if (report_type == HID_FEATURE_REPORT) { + rep_type = SET_FEATURE; + } else { + dev_err_once(qsdev->dev, "Unsupported report type for SET REPORT: %d\n", + report_type); + return -EINVAL; + } + + ret = write_cmd_to_txdma(qsdev, rep_type, report_id, buf + 1, buf_len - 1); + if (ret) { + dev_err_once(qsdev->dev, "Write SET_REPORT command failed, ret = %d\n", ret); + return ret; + } + + ret = wait_event_interruptible_timeout(qsdev->set_report_cmpl_wq, + qsdev->set_report_cmpl, + QUICKSPI_ACK_WAIT_TIMEOUT * HZ); + if (ret <= 0 || !qsdev->set_report_cmpl) { + dev_err_once(qsdev->dev, "Wait Set Report Response timeout, ret:%d\n", ret); + return -ETIMEDOUT; + } + qsdev->set_report_cmpl = false; + + return buf_len; +} diff --git a/drivers/hid/intel-thc-hid/intel-quickspi/quickspi-protocol.h b/drivers/hid/intel-thc-hid/intel-quickspi/quickspi-protocol.h new file mode 100644 index 000000000000..775e29c1ed13 --- /dev/null +++ b/drivers/hid/intel-thc-hid/intel-quickspi/quickspi-protocol.h @@ -0,0 +1,25 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (c) 2024 Intel Corporation */ + +#ifndef _QUICKSPI_PROTOCOL_H_ +#define _QUICKSPI_PROTOCOL_H_ + +#include <linux/hid-over-spi.h> + +#define QUICKSPI_ACK_WAIT_TIMEOUT 5 + +struct quickspi_device; + +void quickspi_handle_input_data(struct quickspi_device *qsdev, u32 buf_len); +int quickspi_get_report(struct quickspi_device *qsdev, u8 report_type, + unsigned int report_id, void *buf); +int quickspi_set_report(struct quickspi_device *qsdev, u8 report_type, + unsigned int report_id, void *buf, u32 buf_len); +int quickspi_get_report_descriptor(struct quickspi_device *qsdev); + +int quickspi_set_power(struct quickspi_device *qsdev, + enum hidspi_power_state power_state); + +int reset_tic(struct quickspi_device *qsdev); + +#endif /* _QUICKSPI_PROTOCOL_H_ */ diff --git a/include/linux/hid-over-spi.h b/include/linux/hid-over-spi.h index ddbe41c5d8fd..da5a14b5e89b 100644 --- a/include/linux/hid-over-spi.h +++ b/include/linux/hid-over-spi.h @@ -4,6 +4,120 @@ #ifndef _HID_OVER_SPI_H_ #define _HID_OVER_SPI_H_ +#include <linux/bits.h> +#include <linux/types.h> + +/* Input report type definition in HIDSPI protocol */ +enum input_report_type { + INVALID_INPUT_REPORT_TYPE_0 = 0, + DATA = 1, + INVALID_TYPE_2 = 2, + RESET_RESPONSE = 3, + COMMAND_RESPONSE = 4, + GET_FEATURE_RESPONSE = 5, + INVALID_TYPE_6 = 6, + DEVICE_DESCRIPTOR_RESPONSE = 7, + REPORT_DESCRIPTOR_RESPONSE = 8, + SET_FEATURE_RESPONSE = 9, + OUTPUT_REPORT_RESPONSE = 10, + GET_INPUT_REPORT_RESPONSE = 11, + INVALID_INPUT_REPORT_TYPE = 0xF, +}; + +/* Output report type definition in HIDSPI protocol */ +enum output_report_type { + INVALID_OUTPUT_REPORT_TYPE_0 = 0, + DEVICE_DESCRIPTOR = 1, + REPORT_DESCRIPTOR = 2, + SET_FEATURE = 3, + GET_FEATURE = 4, + OUTPUT_REPORT = 5, + GET_INPUT_REPORT = 6, + COMMAND_CONTENT = 7, +}; + +/* Set power command ID for output report */ +#define HIDSPI_SET_POWER_CMD_ID 1 + +/* Power state definition in HIDSPI protocol */ +enum hidspi_power_state { + HIDSPI_ON = 1, + HIDSPI_SLEEP = 2, + HIDSPI_OFF = 3, +}; + +/** + * Input report header definition in HIDSPI protocol + * Report header size is 32bits, it includes: + * protocol_ver: [0:3] Current supported HIDSPI protocol version, must be 0x3 + * reserved0: [4:7] Reserved bits + * input_report_len: [8:21] Input report length in number bytes divided by 4 + * last_frag_flag: [22]Indicate if this packet is last fragment. + * 1 - indicates last fragment + * 0 - indicates additional fragments + * reserved1: [23] Reserved bits + * @sync_const: [24:31] Used to validate input report header, must be 0x5A + */ +#define HIDSPI_INPUT_HEADER_SIZE sizeof(u32) +#define HIDSPI_INPUT_HEADER_VER GENMASK(3, 0) +#define HIDSPI_INPUT_HEADER_REPORT_LEN GENMASK(21, 8) +#define HIDSPI_INPUT_HEADER_LAST_FLAG BIT(22) +#define HIDSPI_INPUT_HEADER_SYNC GENMASK(31, 24) + +/** + * struct input_report_body_header - Input report body header definition in HIDSPI protocol + * @input_report_type: indicate input report type, reference to enum input_report_type + * @content_len: this input report body packet length + * @content_id: indicate this input report's report id + */ +struct input_report_body_header { + u8 input_report_type; + __le16 content_len; + u8 content_id; +} __packed; + +#define HIDSPI_INPUT_BODY_HEADER_SIZE sizeof(struct input_report_body_header) + +/** + * struct input_report_body - Input report body definition in HIDSPI protocol + * @body_hdr: input report body header + * @content: input report body content + */ +struct input_report_body { + struct input_report_body_header body_hdr; + u8 content[]; +} __packed; + +#define HIDSPI_INPUT_BODY_SIZE(content_len) ((content_len) + HIDSPI_INPUT_BODY_HEADER_SIZE) + +/** + * struct output_report_header - Output report header definition in HIDSPI protocol + * @report_type: output report type, reference to enum output_report_type + * @content_len: length of content + * @content_id: 0x00 - descriptors + * report id - Set/Feature feature or Input/Output Reports + * command opcode - for commands + */ +struct output_report_header { + u8 report_type; + __le16 content_len; + u8 content_id; +} __packed; + +#define HIDSPI_OUTPUT_REPORT_HEADER_SIZE sizeof(struct output_report_header) + +/** + * struct output_report - Output report definition in HIDSPI protocol + * @output_hdr: output report header + * @content: output report content + */ +struct output_report { + struct output_report_header output_hdr; + u8 content[]; +} __packed; + +#define HIDSPI_OUTPUT_REPORT_SIZE(content_len) ((content_len) + HIDSPI_OUTPUT_REPORT_HEADER_SIZE) + /** * struct hidspi_dev_descriptor - HIDSPI device descriptor definition * @dev_desc_len: The length of the complete device descriptor, fixed to 0x18 (24). @@ -34,4 +148,8 @@ struct hidspi_dev_descriptor { __le32 reserved; }; +#define HIDSPI_DEVICE_DESCRIPTOR_SIZE sizeof(struct hidspi_dev_descriptor) +#define HIDSPI_INPUT_DEVICE_DESCRIPTOR_SIZE \ + (HIDSPI_INPUT_BODY_HEADER_SIZE + HIDSPI_DEVICE_DESCRIPTOR_SIZE) + #endif /* _HID_OVER_SPI_H_ */ |