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author | Mario Limonciello <mario.limonciello@amd.com> | 2022-09-21 15:40:48 -0500 |
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committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2022-09-25 17:44:55 +0200 |
commit | 100a5737938049706987d06a4ab73e82b8277085 (patch) | |
tree | cd55d7e71ea7249dfcd298440e2c8e471f390811 /drivers/acpi/x86 | |
parent | 0efe92b47b9d5e8f31dcb34fd6aff89c7c490ea5 (diff) | |
download | linux-100a5737938049706987d06a4ab73e82b8277085.tar.gz linux-100a5737938049706987d06a4ab73e82b8277085.tar.bz2 linux-100a5737938049706987d06a4ab73e82b8277085.zip |
ACPI: x86: s2idle: Move _HID handling for AMD systems into structures
Right now the information about which cases to use for what are in a
comment, but this is error prone. Instead move all information into
a dedicated structure.
Tested-by: catalin@antebit.com
Reviewed-by: Philipp Zabel <philipp.zabel@gmail.com>
Tested-by: Philipp Zabel <philipp.zabel@gmail.com> # GA402RJ
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/x86')
-rw-r--r-- | drivers/acpi/x86/s2idle.c | 63 |
1 files changed, 46 insertions, 17 deletions
diff --git a/drivers/acpi/x86/s2idle.c b/drivers/acpi/x86/s2idle.c index f9ac12b778e6..28a3ef9a6bc1 100644 --- a/drivers/acpi/x86/s2idle.c +++ b/drivers/acpi/x86/s2idle.c @@ -363,6 +363,39 @@ out: return ret; } +struct amd_lps0_hid_device_data { + const unsigned int rev_id; + const bool check_off_by_one; + const bool prefer_amd_guid; +}; + +static const struct amd_lps0_hid_device_data amd_picasso = { + .rev_id = 0, + .check_off_by_one = true, + .prefer_amd_guid = false, +}; + +static const struct amd_lps0_hid_device_data amd_cezanne = { + .rev_id = 0, + .check_off_by_one = false, + .prefer_amd_guid = false, +}; + +static const struct amd_lps0_hid_device_data amd_rembrandt = { + .rev_id = 2, + .check_off_by_one = false, + .prefer_amd_guid = true, +}; + +static const struct acpi_device_id amd_hid_ids[] = { + {"AMD0004", (kernel_ulong_t)&amd_picasso, }, + {"AMD0005", (kernel_ulong_t)&amd_picasso, }, + {"AMDI0005", (kernel_ulong_t)&amd_picasso, }, + {"AMDI0006", (kernel_ulong_t)&amd_cezanne, }, + {"AMDI0007", (kernel_ulong_t)&amd_rembrandt, }, + {} +}; + static int lps0_device_attach(struct acpi_device *adev, const struct acpi_device_id *not_used) { @@ -370,31 +403,27 @@ static int lps0_device_attach(struct acpi_device *adev, return 0; if (acpi_s2idle_vendor_amd()) { - /* AMD0004, AMD0005, AMDI0005: - * - Should use rev_id 0x0 - * - function mask > 0x3: Should use AMD method, but has off by one bug - * - function mask = 0x3: Should use Microsoft method - * AMDI0006: - * - should use rev_id 0x0 - * - function mask = 0x3: Should use Microsoft method - * AMDI0007: - * - Should use rev_id 0x2 - * - Should only use AMD method - */ - const char *hid = acpi_device_hid(adev); - rev_id = strcmp(hid, "AMDI0007") ? 0 : 2; + static const struct acpi_device_id *dev_id; + const struct amd_lps0_hid_device_data *data; + + for (dev_id = &amd_hid_ids[0]; dev_id->id[0]; dev_id++) + if (acpi_dev_hid_uid_match(adev, dev_id->id, NULL)) + break; + if (dev_id) + data = (const struct amd_lps0_hid_device_data *) dev_id->driver_data; + else + return 0; + rev_id = data->rev_id; lps0_dsm_func_mask = validate_dsm(adev->handle, ACPI_LPS0_DSM_UUID_AMD, rev_id, &lps0_dsm_guid); lps0_dsm_func_mask_microsoft = validate_dsm(adev->handle, ACPI_LPS0_DSM_UUID_MICROSOFT, 0, &lps0_dsm_guid_microsoft); - if (lps0_dsm_func_mask > 0x3 && (!strcmp(hid, "AMD0004") || - !strcmp(hid, "AMD0005") || - !strcmp(hid, "AMDI0005"))) { + if (lps0_dsm_func_mask > 0x3 && data->check_off_by_one) { lps0_dsm_func_mask = (lps0_dsm_func_mask << 1) | 0x1; acpi_handle_debug(adev->handle, "_DSM UUID %s: Adjusted function mask: 0x%x\n", ACPI_LPS0_DSM_UUID_AMD, lps0_dsm_func_mask); - } else if (lps0_dsm_func_mask_microsoft > 0 && + } else if (lps0_dsm_func_mask_microsoft > 0 && data->prefer_amd_guid && (!strcmp(hid, "AMDI0007") || !strcmp(hid, "AMDI0008"))) { lps0_dsm_func_mask_microsoft = -EINVAL; |