Hi,
On 7/12/22 16:58, Shyam Sundar S K wrote:
> Some of the older platforms with _HID "AMDI0100" PMF driver can be force
> loaded by interested users but only for experimental purposes.
>
> Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@xxxxxxx>
Thanks, patch looks good to me:
Reviewed-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Regards,
Hans
> ---
> drivers/platform/x86/amd/pmf/core.c | 16 ++++++++++++++++
> 1 file changed, 16 insertions(+)
>
> diff --git a/drivers/platform/x86/amd/pmf/core.c b/drivers/platform/x86/amd/pmf/core.c
> index 2a3dacfb2005..ef50d67f6013 100644
> --- a/drivers/platform/x86/amd/pmf/core.c
> +++ b/drivers/platform/x86/amd/pmf/core.c
> @@ -39,6 +39,7 @@
> #define AMD_PMF_RESULT_FAILED 0xFF
>
> /* List of supported CPU ids */
> +#define AMD_CPU_ID_RMB 0x14b5
> #define AMD_CPU_ID_PS 0x14e8
>
> #define PMF_MSG_DELAY_MIN_US 50
> @@ -52,6 +53,11 @@ static int metrics_table_loop_ms = 1000;
> module_param(metrics_table_loop_ms, int, 0644);
> MODULE_PARM_DESC(metrics_table_loop_ms, " Metrics Table sample size time (default = 1000ms) ");
>
> +/* Force load on supported older platforms */
> +static bool force_load;
> +module_param(force_load, bool, 0444);
> +MODULE_PARM_DESC(force_load, " Force load this driver on supported older platforms (experimental) ");
> +
> #ifdef CONFIG_DEBUG_FS
> static int current_power_limits_show(struct seq_file *seq, void *unused)
> {
> @@ -240,6 +246,7 @@ int amd_pmf_send_cmd(struct amd_pmf_dev *dev, u8 message, bool get, u32 arg, u32
> }
>
> static const struct pci_device_id pmf_pci_ids[] = {
> + { PCI_DEVICE(PCI_VENDOR_ID_AMD, AMD_CPU_ID_RMB) },
> { PCI_DEVICE(PCI_VENDOR_ID_AMD, AMD_CPU_ID_PS) },
> { }
> };
> @@ -313,6 +320,7 @@ static void amd_pmf_deinit_features(struct amd_pmf_dev *dev)
> }
>
> static const struct acpi_device_id amd_pmf_acpi_ids[] = {
> + {"AMDI0100", 0x100},
> {"AMDI0102", 0},
> { }
> };
> @@ -320,6 +328,7 @@ MODULE_DEVICE_TABLE(acpi, amd_pmf_acpi_ids);
>
> static int amd_pmf_probe(struct platform_device *pdev)
> {
> + const struct acpi_device_id *id;
> struct amd_pmf_dev *dev;
> struct pci_dev *rdev;
> u32 base_addr_lo;
> @@ -328,6 +337,13 @@ static int amd_pmf_probe(struct platform_device *pdev)
> u32 val;
> int err;
>
> + id = acpi_match_device(amd_pmf_acpi_ids, &pdev->dev);
> + if (!id)
> + return -ENODEV;
> +
> + if (id->driver_data == 0x100 && !force_load)
> + return -ENODEV;
> +
> dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
> if (!dev)
> return -ENOMEM;
