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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: Guenter Roeck <linux@roeck-us.net>
hifive-unleashed-5.1
Guenter Roeck 2017-09-04 18:33:53 -07:00
parent fc483a9bf7
commit 68546abf7a
1 changed files with 44 additions and 16 deletions
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60
drivers/hwmon/k10temp.c
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@ -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);
unsigned int temp;
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);
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);
}