linux-kernel - [PATCH v2 3/5] ACPI: APD: Add a fmw property clk-name

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Date:   Tue, 12 Oct 2021 16:06:10 +0530
From:   Ajit Kumar Pandey <AjitKumar.Pandey@....com>
To:     <sboyd@...nel.org>, <linux-clk@...r.kernel.org>
CC:     <Vijendar.Mukunda@....com>, <Basavaraj.Hiregoudar@....com>,
        <Sunil-kumar.Dommati@....com>, <Alexander.Deucher@....com>,
        Ajit Kumar Pandey <AjitKumar.Pandey@....com>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        "Len Brown" <lenb@...nel.org>,
        "open list:ACPI" <linux-acpi@...r.kernel.org>,
        "open list" <linux-kernel@...r.kernel.org>
Subject: [PATCH v2 3/5] 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@....com>
---
 drivers/acpi/acpi_apd.c               | 10 ++++++++++
 include/linux/platform_data/clk-fch.h |  1 +
 2 files changed, 11 insertions(+)

diff --git a/drivers/acpi/acpi_apd.c b/drivers/acpi/acpi_apd.c
index 6913e9712852..2b958b426b03 100644
--- 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 850ca776156d..11a2a23fd9b2 100644
--- 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 */
-- 
2.25.1