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Commit 68546abf authored by Guenter Roeck's avatar Guenter Roeck
Browse files

hwmon: (k10temp) Move chip specific code into probe function 



Introduce a local data structure and determine the temperature read
function at probe time to reduce runtime complexity.

Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent fc483a9b

drivers/hwmon/k10temp.c

+45 −17
Original line number Diff line number Diff line
@@ -61,31 +61,44 @@ static DEFINE_MUTEX(nb_smu_ind_mutex); 
 */

#define F15H_M60H_REPORTED_TEMP_CTRL_OFFSET	0xd8200ca4



static void amd_nb_smu_index_read(struct pci_dev *pdev, unsigned int devfn,

				  int offset, u32 *val)

struct k10temp_data {

	struct pci_dev *pdev;

	void (*read_tempreg)(struct pci_dev *pdev, u32 *regval);

};



static void read_tempreg_pci(struct pci_dev *pdev, u32 *regval)

{

	pci_read_config_dword(pdev, REG_REPORTED_TEMPERATURE, regval);

}



static void amd_nb_index_read(struct pci_dev *pdev, unsigned int devfn,

			      unsigned int base, int offset, u32 *val)

{

	mutex_lock(&nb_smu_ind_mutex);

	pci_bus_write_config_dword(pdev->bus, devfn,

				   0xb8, offset);

				   base, offset);

	pci_bus_read_config_dword(pdev->bus, devfn,

				  0xbc, val);

				  base + 4, val);

	mutex_unlock(&nb_smu_ind_mutex);

}



static void read_tempreg_nb_f15(struct pci_dev *pdev, u32 *regval)

{

	amd_nb_index_read(pdev, PCI_DEVFN(0, 0), 0xb8,

			  F15H_M60H_REPORTED_TEMP_CTRL_OFFSET, regval);

}



static ssize_t temp1_input_show(struct device *dev,

				struct device_attribute *attr, char *buf)

{

	struct k10temp_data *data = dev_get_drvdata(dev);

	u32 regval;

	struct pci_dev *pdev = dev_get_drvdata(dev);



	if (boot_cpu_data.x86 == 0x15 && boot_cpu_data.x86_model == 0x60) {

		amd_nb_smu_index_read(pdev, PCI_DEVFN(0, 0),

				      F15H_M60H_REPORTED_TEMP_CTRL_OFFSET,

				      &regval);

	} else {

		pci_read_config_dword(pdev, REG_REPORTED_TEMPERATURE, &regval);

	}

	return sprintf(buf, "%u\n", (regval >> 21) * 125);

	unsigned int temp;



	data->read_tempreg(data->pdev, &regval);

	temp = (regval >> 21) * 125;



	return sprintf(buf, "%u\n", temp);

}



static ssize_t temp1_max_show(struct device *dev,
@@ -98,11 +111,12 @@ static ssize_t show_temp_crit(struct device *dev, 
			      struct device_attribute *devattr, char *buf)

{

	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);

	struct k10temp_data *data = dev_get_drvdata(dev);

	int show_hyst = attr->index;

	u32 regval;

	int value;



	pci_read_config_dword(dev_get_drvdata(dev),

	pci_read_config_dword(data->pdev,

			      REG_HARDWARE_THERMAL_CONTROL, &regval);

	value = ((regval >> 16) & 0x7f) * 500 + 52000;

	if (show_hyst)
@@ -119,7 +133,8 @@ static umode_t k10temp_is_visible(struct kobject *kobj, 
				  struct attribute *attr, int index)

{

	struct device *dev = container_of(kobj, struct device, kobj);

	struct pci_dev *pdev = dev_get_drvdata(dev);

	struct k10temp_data *data = dev_get_drvdata(dev);

	struct pci_dev *pdev = data->pdev;



	if (index >= 2) {

		u32 reg_caps, reg_htc;
@@ -187,6 +202,7 @@ static int k10temp_probe(struct pci_dev *pdev, 
{

	int unreliable = has_erratum_319(pdev);

	struct device *dev = &pdev->dev;

	struct k10temp_data *data;

	struct device *hwmon_dev;



	if (unreliable) {
@@ -199,7 +215,19 @@ static int k10temp_probe(struct pci_dev *pdev, 
			 "unreliable CPU thermal sensor; check erratum 319\n");

	}



	hwmon_dev = devm_hwmon_device_register_with_groups(dev, "k10temp", pdev,

	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);

	if (!data)

		return -ENOMEM;



	data->pdev = pdev;



	if (boot_cpu_data.x86 == 0x15 && (boot_cpu_data.x86_model == 0x60 ||

					  boot_cpu_data.x86_model == 0x70))

		data->read_tempreg = read_tempreg_nb_f15;

	else

		data->read_tempreg = read_tempreg_pci;



	hwmon_dev = devm_hwmon_device_register_with_groups(dev, "k10temp", data,

							   k10temp_groups);

	return PTR_ERR_OR_ZERO(hwmon_dev);

}