Current AMD's zen-based APUs use this core for some of its i2c-buses. With this patch we re-enable autodetection of hwmon-alike devices, so lm-sensors will be able to work automatically. It does not affect the boot-time of embedded devices, as the class is set based on the dmi information. Signed-off-by: Ricardo Ribalda <ribalda@xxxxxxxxxx> --- v2: Changes by Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>: - CodeStyle Changes by kernel test robot <lkp@xxxxxxxxx> - Include dmi header to fix build error on arc - check if dmi_get_system_info returned NULL drivers/i2c/busses/i2c-designware-platdrv.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c index c2efaaaac252..5892fdba9c25 100644 --- a/drivers/i2c/busses/i2c-designware-platdrv.c +++ b/drivers/i2c/busses/i2c-designware-platdrv.c @@ -12,6 +12,7 @@ #include <linux/clk-provider.h> #include <linux/clk.h> #include <linux/delay.h> +#include <linux/dmi.h> #include <linux/err.h> #include <linux/errno.h> #include <linux/i2c.h> @@ -173,6 +174,19 @@ static void dw_i2c_plat_pm_cleanup(struct dw_i2c_dev *dev) pm_runtime_put_noidle(dev->dev); } +static bool dw_i2c_hwmon_bus(void) +{ + const char *product_name = dmi_get_system_info(DMI_PRODUCT_NAME); + + if (!product_name) + return false; + + if (strstr(product_name, "QT5222")) + return true; + + return false; +} + static int dw_i2c_plat_request_regs(struct dw_i2c_dev *dev) { struct platform_device *pdev = to_platform_device(dev->dev); @@ -267,7 +281,7 @@ static int dw_i2c_plat_probe(struct platform_device *pdev) adap = &dev->adapter; adap->owner = THIS_MODULE; - adap->class = I2C_CLASS_DEPRECATED; + adap->class = dw_i2c_hwmon_bus() ? I2C_CLASS_HWMON : I2C_CLASS_DEPRECATED; ACPI_COMPANION_SET(&adap->dev, ACPI_COMPANION(&pdev->dev)); adap->dev.of_node = pdev->dev.of_node; adap->nr = -1; -- 2.27.0