ACPI: APD: Add a fmw property clk-name

Add a new device property to fetch clk-name from firmware.

Signed-off-by: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com>
Reviewed-by: Mario Limonciello <Mario.Limonciello@amd.com>
Link: https://lore.kernel.org/r/20211212180527.1641362-4-AjitKumar.Pandey@amd.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

diff --git a/drivers/acpi/acpi_apd.c b/drivers/acpi/acpi_apd.c
index 6913e9712852c4bb70b08811653e836958c2f4d0..2b958b426b034abdaa8ab799d2bddbe97d9440dc 100644 (file)
--- a/drivers/acpi/acpi_apd.c
+++ b/drivers/acpi/acpi_apd.c
@@ -87,6 +87,16 @@ static int fch_misc_setup(struct apd_private_data *pdata)
        if (ret < 0)
                return -ENOENT;
 
+       if (!acpi_dev_get_property(adev, "clk-name", ACPI_TYPE_STRING, &obj)) {
+               clk_data->name = devm_kzalloc(&adev->dev, obj->string.length,
+                                             GFP_KERNEL);
+
+               strcpy(clk_data->name, obj->string.pointer);
+       } else {
+               /* Set default name to mclk if entry missing in firmware */
+               clk_data->name = "mclk";
+       }
+
        list_for_each_entry(rentry, &resource_list, node) {
                clk_data->base = devm_ioremap(&adev->dev, rentry->res->start,
                                              resource_size(rentry->res));

diff --git a/include/linux/platform_data/clk-fch.h b/include/linux/platform_data/clk-fch.h
index 850ca776156d271b145f5a616b1809ccff70bba4..11a2a23fd9b25dfb823e60672153a308c3ffb326 100644 (file)
--- a/include/linux/platform_data/clk-fch.h
+++ b/include/linux/platform_data/clk-fch.h
@@ -12,6 +12,7 @@
 
 struct fch_clk_data {
        void __iomem *base;
+       char *name;
 };
 
 #endif /* __CLK_FCH_H */