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HID: intel-thc-hid: intel-quickspi: Add THC QuickSPI ACPI interfaces
Add functions to query QuickSPI ACPI DSD parameters and provide APIs for DSM method accessing. Co-developed-by: Xinpeng Sun <xinpeng.sun@intel.com> Signed-off-by: Xinpeng Sun <xinpeng.sun@intel.com> Signed-off-by: Even Xu <even.xu@intel.com> Tested-by: Rui Zhang <rui1.zhang@intel.com> Tested-by: Mark Pearson <mpearson-lenovo@squebb.ca> Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Reviewed-by: Mark Pearson <mpearson-lenovo@squebb.ca> Tested-by: Aaron Ma <aaron.ma@canonical.com> Signed-off-by: Jiri Kosina <jkosina@suse.com>
This commit is contained in:
Even Xu
Jiri Kosina
parent
4751113f24
commit
7cb06f08ef
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@ -1,6 +1,8 @@
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/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (c) 2024 Intel Corporation */
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#include <linux/acpi.h>
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#include <linux/bitfield.h>
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#include <linux/device.h>
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#include <linux/dma-mapping.h>
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#include <linux/err.h>
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@ -9,6 +11,7 @@
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#include <linux/pci.h>
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#include "intel-thc-dev.h"
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#include "intel-thc-hw.h"
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#include "quickspi-dev.h"
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@ -24,6 +27,186 @@ struct quickspi_driver_data ptl = {
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.max_packet_size_value = MAX_PACKET_SIZE_VALUE_LNL,
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};
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/* THC QuickSPI ACPI method to get device properties */
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/* HIDSPI Method: {6e2ac436-0fcf-41af-a265-b32a220dcfab} */
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static guid_t hidspi_guid =
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GUID_INIT(0x6e2ac436, 0x0fcf, 0x41af, 0xa2, 0x65, 0xb3, 0x2a,
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0x22, 0x0d, 0xcf, 0xab);
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/* QuickSpi Method: {300D35b7-ac20-413e-8e9c-92e4dafd0afe} */
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static guid_t thc_quickspi_guid =
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GUID_INIT(0x300d35b7, 0xac20, 0x413e, 0x8e, 0x9c, 0x92, 0xe4,
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0xda, 0xfd, 0x0a, 0xfe);
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/* Platform Method: {84005682-5b71-41a4-0x8d668130f787a138} */
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static guid_t thc_platform_guid =
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GUID_INIT(0x84005682, 0x5b71, 0x41a4, 0x8d, 0x66, 0x81, 0x30,
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0xf7, 0x87, 0xa1, 0x38);
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/**
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* thc_acpi_get_property - Query device ACPI parameter
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*
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* @adev: point to ACPI device
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* @guid: ACPI method's guid
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* @rev: ACPI method's revision
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* @func: ACPI method's function number
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* @type: ACPI parameter's data type
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* @prop_buf: point to return buffer
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*
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* This is a helper function for device to query its ACPI parameters.
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*
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* Return: 0 if successful or ENODEV on failed.
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*/
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static int thc_acpi_get_property(struct acpi_device *adev, const guid_t *guid,
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u64 rev, u64 func, acpi_object_type type, void *prop_buf)
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{
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acpi_handle handle = acpi_device_handle(adev);
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union acpi_object *obj;
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obj = acpi_evaluate_dsm_typed(handle, guid, rev, func, NULL, type);
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if (!obj) {
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acpi_handle_err(handle,
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"Error _DSM call failed, rev: %llu, func: %llu, type: %u\n",
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rev, func, type);
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return -ENODEV;
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}
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if (type == ACPI_TYPE_INTEGER)
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*(u32 *)prop_buf = (u32)obj->integer.value;
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else if (type == ACPI_TYPE_BUFFER)
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memcpy(prop_buf, obj->buffer.pointer, obj->buffer.length);
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ACPI_FREE(obj);
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return 0;
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}
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/**
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* quickspi_get_acpi_resources - Query all quickspi devices' ACPI parameters
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*
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* @qsdev: point to quickspi device
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*
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* This function gets all quickspi devices' ACPI resource.
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*
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* Return: 0 if successful or error code on failed.
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*/
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static int quickspi_get_acpi_resources(struct quickspi_device *qsdev)
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{
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struct acpi_device *adev = ACPI_COMPANION(qsdev->dev);
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int ret = -EINVAL;
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if (!adev) {
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dev_err(qsdev->dev, "no valid ACPI companion\n");
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return ret;
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}
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qsdev->acpi_dev = adev;
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ret = thc_acpi_get_property(adev, &hidspi_guid,
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ACPI_QUICKSPI_REVISION_NUM,
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ACPI_QUICKSPI_FUNC_NUM_INPUT_REP_HDR_ADDR,
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ACPI_TYPE_INTEGER,
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&qsdev->input_report_hdr_addr);
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if (ret)
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return ret;
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ret = thc_acpi_get_property(adev, &hidspi_guid,
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ACPI_QUICKSPI_REVISION_NUM,
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ACPI_QUICKSPI_FUNC_NUM_INPUT_REP_BDY_ADDR,
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ACPI_TYPE_INTEGER,
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&qsdev->input_report_bdy_addr);
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if (ret)
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return ret;
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ret = thc_acpi_get_property(adev, &hidspi_guid,
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ACPI_QUICKSPI_REVISION_NUM,
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ACPI_QUICKSPI_FUNC_NUM_OUTPUT_REP_ADDR,
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ACPI_TYPE_INTEGER,
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&qsdev->output_report_addr);
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if (ret)
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return ret;
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ret = thc_acpi_get_property(adev, &hidspi_guid,
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ACPI_QUICKSPI_REVISION_NUM,
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ACPI_QUICKSPI_FUNC_NUM_READ_OPCODE,
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ACPI_TYPE_BUFFER,
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&qsdev->spi_read_opcode);
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if (ret)
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return ret;
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ret = thc_acpi_get_property(adev, &hidspi_guid,
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ACPI_QUICKSPI_REVISION_NUM,
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ACPI_QUICKSPI_FUNC_NUM_WRITE_OPCODE,
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ACPI_TYPE_BUFFER,
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&qsdev->spi_write_opcode);
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if (ret)
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return ret;
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ret = thc_acpi_get_property(adev, &hidspi_guid,
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ACPI_QUICKSPI_REVISION_NUM,
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ACPI_QUICKSPI_FUNC_NUM_IO_MODE,
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ACPI_TYPE_INTEGER,
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&qsdev->spi_read_io_mode);
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if (ret)
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return ret;
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if (qsdev->spi_read_io_mode & SPI_WRITE_IO_MODE)
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qsdev->spi_write_io_mode = FIELD_GET(SPI_IO_MODE_OPCODE, qsdev->spi_read_io_mode);
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else
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qsdev->spi_write_io_mode = THC_SINGLE_IO;
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qsdev->spi_read_io_mode = FIELD_GET(SPI_IO_MODE_OPCODE, qsdev->spi_read_io_mode);
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ret = thc_acpi_get_property(adev, &thc_quickspi_guid,
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ACPI_QUICKSPI_REVISION_NUM,
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ACPI_QUICKSPI_FUNC_NUM_CONNECTION_SPEED,
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ACPI_TYPE_INTEGER,
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&qsdev->spi_freq_val);
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if (ret)
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return ret;
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ret = thc_acpi_get_property(adev, &thc_quickspi_guid,
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ACPI_QUICKSPI_REVISION_NUM,
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ACPI_QUICKSPI_FUNC_NUM_LIMIT_PACKET_SIZE,
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ACPI_TYPE_INTEGER,
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&qsdev->limit_packet_size);
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if (ret)
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return ret;
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if (qsdev->limit_packet_size || !qsdev->driver_data)
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qsdev->spi_packet_size = DEFAULT_MIN_PACKET_SIZE_VALUE;
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else
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qsdev->spi_packet_size = qsdev->driver_data->max_packet_size_value;
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ret = thc_acpi_get_property(adev, &thc_quickspi_guid,
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ACPI_QUICKSPI_REVISION_NUM,
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ACPI_QUICKSPI_FUNC_NUM_PERFORMANCE_LIMIT,
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ACPI_TYPE_INTEGER,
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&qsdev->performance_limit);
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if (ret)
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return ret;
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qsdev->performance_limit = FIELD_GET(PERFORMANCE_LIMITATION, qsdev->performance_limit);
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ret = thc_acpi_get_property(adev, &thc_platform_guid,
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ACPI_QUICKSPI_REVISION_NUM,
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ACPI_QUICKSPI_FUNC_NUM_ACTIVE_LTR,
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ACPI_TYPE_INTEGER,
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&qsdev->active_ltr_val);
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if (ret)
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return ret;
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ret = thc_acpi_get_property(adev, &thc_platform_guid,
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ACPI_QUICKSPI_REVISION_NUM,
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ACPI_QUICKSPI_FUNC_NUM_LP_LTR,
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ACPI_TYPE_INTEGER,
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&qsdev->low_power_ltr_val);
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if (ret)
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return ret;
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return 0;
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}
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/**
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* quickspi_irq_quick_handler - The ISR of the quickspi driver
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*
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@ -113,6 +296,12 @@ static struct quickspi_device *quickspi_dev_init(struct pci_dev *pdev, void __io
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return ERR_PTR(ret);
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}
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ret = quickspi_get_acpi_resources(qsdev);
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if (ret) {
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dev_err(dev, "Get ACPI resources failed, ret = %d\n", ret);
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return ERR_PTR(ret);
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}
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thc_interrupt_config(qsdev->thc_hw);
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thc_interrupt_enable(qsdev->thc_hw, true);
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@ -15,6 +15,28 @@
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#define PCI_DEVICE_ID_INTEL_THC_PTL_U_DEVICE_ID_SPI_PORT1 0xE449
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#define PCI_DEVICE_ID_INTEL_THC_PTL_U_DEVICE_ID_SPI_PORT2 0xE44B
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/* HIDSPI special ACPI parameters DSM methods */
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#define ACPI_QUICKSPI_REVISION_NUM 2
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#define ACPI_QUICKSPI_FUNC_NUM_INPUT_REP_HDR_ADDR 1
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#define ACPI_QUICKSPI_FUNC_NUM_INPUT_REP_BDY_ADDR 2
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#define ACPI_QUICKSPI_FUNC_NUM_OUTPUT_REP_ADDR 3
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#define ACPI_QUICKSPI_FUNC_NUM_READ_OPCODE 4
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#define ACPI_QUICKSPI_FUNC_NUM_WRITE_OPCODE 5
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#define ACPI_QUICKSPI_FUNC_NUM_IO_MODE 6
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/* QickSPI device special ACPI parameters DSM methods */
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#define ACPI_QUICKSPI_FUNC_NUM_CONNECTION_SPEED 1
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#define ACPI_QUICKSPI_FUNC_NUM_LIMIT_PACKET_SIZE 2
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#define ACPI_QUICKSPI_FUNC_NUM_PERFORMANCE_LIMIT 3
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/* Platform special ACPI parameters DSM methods */
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#define ACPI_QUICKSPI_FUNC_NUM_ACTIVE_LTR 1
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#define ACPI_QUICKSPI_FUNC_NUM_LP_LTR 2
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#define SPI_WRITE_IO_MODE BIT(13)
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#define SPI_IO_MODE_OPCODE GENMASK(15, 14)
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#define PERFORMANCE_LIMITATION GENMASK(15, 0)
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/* Packet size value, the unit is 16 bytes */
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#define DEFAULT_MIN_PACKET_SIZE_VALUE 4
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#define MAX_PACKET_SIZE_VALUE_MTL 128
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@ -41,6 +63,7 @@ struct device;
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struct pci_dev;
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struct thc_device;
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struct hid_device;
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struct acpi_device;
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/**
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* struct quickspi_device - THC QuickSpi device struct
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@ -48,10 +71,26 @@ struct hid_device;
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* @pdev: point to PCI device
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* @thc_hw: point to THC device
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* @hid_dev: point to hid device
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* @acpi_dev: point to ACPI device
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* @driver_data: point to quickspi specific driver data
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* @state: THC SPI device state
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* @mem_addr: MMIO memory address
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* @dev_desc: device descriptor for HIDSPI protocol
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* @input_report_hdr_addr: device input report header address
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* @input_report_bdy_addr: device input report body address
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* @output_report_bdy_addr: device output report address
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* @spi_freq_val: device supported max SPI frequnecy, in Hz
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* @spi_read_io_mode: device supported SPI read io mode
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* @spi_write_io_mode: device supported SPI write io mode
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* @spi_read_opcode: device read opcode
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* @spi_write_opcode: device write opcode
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* @limit_packet_size: 1 - limit read/write packet to 64Bytes
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* 0 - device no packet size limiation for read/write
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* @performance_limit: delay time, in ms.
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* if device has performance limitation, must give a delay
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* before write operation after a read operation.
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* @active_ltr_val: THC active LTR value
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* @low_power_ltr_val: THC low power LTR value
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* @report_descriptor: store a copy of device report descriptor
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*/
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struct quickspi_device {
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@ -59,12 +98,27 @@ struct quickspi_device {
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struct pci_dev *pdev;
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struct thc_device *thc_hw;
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struct hid_device *hid_dev;
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struct acpi_device *acpi_dev;
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struct quickspi_driver_data *driver_data;
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enum quickspi_dev_state state;
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void __iomem *mem_addr;
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struct hidspi_dev_descriptor dev_desc;
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u32 input_report_hdr_addr;
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u32 input_report_bdy_addr;
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u32 output_report_addr;
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u32 spi_freq_val;
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u32 spi_read_io_mode;
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u32 spi_write_io_mode;
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u32 spi_read_opcode;
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u32 spi_write_opcode;
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u32 limit_packet_size;
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u32 spi_packet_size;
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u32 performance_limit;
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u32 active_ltr_val;
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u32 low_power_ltr_val;
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u8 *report_descriptor;
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};
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