linux-kernel - [PATCH 5/7] thermal: rockchip: Support dynamic sized sensor array

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Date:   Mon, 31 Oct 2022 18:50:56 +0100
From:   Sebastian Reichel <sebastian.reichel@...labora.com>
To:     Heiko Stuebner <heiko@...ech.de>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Amit Kucheria <amitk@...nel.org>,
        Zhang Rui <rui.zhang@...el.com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-pm@...r.kernel.org, linux-rockchip@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Sebastian Reichel <sebastian.reichel@...labora.com>,
        kernel@...labora.com
Subject: [PATCH 5/7] thermal: rockchip: Support dynamic sized sensor array

Dynamically allocate the sensors array based on the amount
of platform sensors in preparation for rk3588 support, which
needs 7 sensors.

Signed-off-by: Sebastian Reichel <sebastian.reichel@...labora.com>
---
 drivers/thermal/rockchip_thermal.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/drivers/thermal/rockchip_thermal.c b/drivers/thermal/rockchip_thermal.c
index a547e44e2b64..c9d04b58a1e5 100644
--- a/drivers/thermal/rockchip_thermal.c
+++ b/drivers/thermal/rockchip_thermal.c
@@ -51,12 +51,6 @@ enum adc_sort_mode {
 
 #include "thermal_hwmon.h"
 
-/**
- * The max sensors is two in rockchip SoCs.
- * Two sensors: CPU and GPU sensor.
- */
-#define SOC_MAX_SENSORS	2
-
 /**
  * struct chip_tsadc_table - hold information about chip-specific differences
  * @id: conversion table
@@ -147,7 +141,7 @@ struct rockchip_thermal_data {
 	struct platform_device *pdev;
 	struct reset_control *reset;
 
-	struct rockchip_thermal_sensor sensors[SOC_MAX_SENSORS];
+	struct rockchip_thermal_sensor *sensors;
 
 	struct clk *clk;
 	struct clk *pclk;
@@ -1367,6 +1361,11 @@ static int rockchip_thermal_probe(struct platform_device *pdev)
 	if (!thermal->chip)
 		return -EINVAL;
 
+	thermal->sensors = devm_kcalloc(&pdev->dev, thermal->chip->chn_num,
+					sizeof(*thermal->sensors), GFP_KERNEL);
+	if (!thermal->sensors)
+		return -ENOMEM;
+
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	thermal->regs = devm_ioremap_resource(&pdev->dev, res);
 	if (IS_ERR(thermal->regs))
-- 
2.35.1