hwmon: (k8temp) update to use new hwmon registration API
Removes: - hwmon_dev from k8temp_data struct, as that is now passed to callbacks, anyway. - other k8temp_data struct fields, too. - k8temp_update_device() Also reduces binary size: text data bss dec hex filename 4139 1448 0 5587 15d3 drivers/hwmon/k8temp.ko.bak 3103 1220 0 4323 10e3 drivers/hwmon/k8temp.ko Signed-off-by: Robert Karszniewicz <avoidr@firemail.cc> Signed-off-by: Robert Karszniewicz <avoidr@riseup.net> Link: https://lore.kernel.org/r/20190721120051.28064-1-avoidr@riseup.net Signed-off-by: Guenter Roeck <linux@roeck-us.net>alistair/sunxi64-5.4-dsi
Robert Karszniewicz
Guenter Roeck
parent
59eedefbba
commit
3b07a702cc
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@ -10,10 +10,8 @@
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/jiffies.h>
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#include <linux/pci.h>
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#include <linux/hwmon.h>
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#include <linux/hwmon-sysfs.h>
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#include <linux/err.h>
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#include <linux/mutex.h>
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#include <asm/processor.h>
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@ -24,108 +22,18 @@
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#define SEL_CORE 0x04
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struct k8temp_data {
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struct device *hwmon_dev;
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struct mutex update_lock;
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const char *name;
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char valid; /* zero until following fields are valid */
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unsigned long last_updated; /* in jiffies */
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/* registers values */
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u8 sensorsp; /* sensor presence bits - SEL_CORE, SEL_PLACE */
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u32 temp[2][2]; /* core, place */
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u8 swap_core_select; /* meaning of SEL_CORE is inverted */
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u32 temp_offset;
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};
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static struct k8temp_data *k8temp_update_device(struct device *dev)
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{
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struct k8temp_data *data = dev_get_drvdata(dev);
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struct pci_dev *pdev = to_pci_dev(dev);
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u8 tmp;
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mutex_lock(&data->update_lock);
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if (!data->valid
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|| time_after(jiffies, data->last_updated + HZ)) {
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pci_read_config_byte(pdev, REG_TEMP, &tmp);
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tmp &= ~(SEL_PLACE | SEL_CORE); /* Select sensor 0, core0 */
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pci_write_config_byte(pdev, REG_TEMP, tmp);
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pci_read_config_dword(pdev, REG_TEMP, &data->temp[0][0]);
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if (data->sensorsp & SEL_PLACE) {
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tmp |= SEL_PLACE; /* Select sensor 1, core0 */
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pci_write_config_byte(pdev, REG_TEMP, tmp);
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pci_read_config_dword(pdev, REG_TEMP,
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&data->temp[0][1]);
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}
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if (data->sensorsp & SEL_CORE) {
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tmp &= ~SEL_PLACE; /* Select sensor 0, core1 */
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tmp |= SEL_CORE;
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pci_write_config_byte(pdev, REG_TEMP, tmp);
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pci_read_config_dword(pdev, REG_TEMP,
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&data->temp[1][0]);
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if (data->sensorsp & SEL_PLACE) {
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tmp |= SEL_PLACE; /* Select sensor 1, core1 */
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pci_write_config_byte(pdev, REG_TEMP, tmp);
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pci_read_config_dword(pdev, REG_TEMP,
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&data->temp[1][1]);
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}
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}
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data->last_updated = jiffies;
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data->valid = 1;
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}
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mutex_unlock(&data->update_lock);
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return data;
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}
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/*
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* Sysfs stuff
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*/
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static ssize_t name_show(struct device *dev, struct device_attribute
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*devattr, char *buf)
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{
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struct k8temp_data *data = dev_get_drvdata(dev);
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return sprintf(buf, "%s\n", data->name);
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}
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static ssize_t temp_show(struct device *dev, struct device_attribute *devattr,
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char *buf)
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{
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struct sensor_device_attribute_2 *attr =
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to_sensor_dev_attr_2(devattr);
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int core = attr->nr;
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int place = attr->index;
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int temp;
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struct k8temp_data *data = k8temp_update_device(dev);
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if (data->swap_core_select && (data->sensorsp & SEL_CORE))
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core = core ? 0 : 1;
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temp = TEMP_FROM_REG(data->temp[core][place]) + data->temp_offset;
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return sprintf(buf, "%d\n", temp);
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}
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/* core, place */
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static SENSOR_DEVICE_ATTR_2_RO(temp1_input, temp, 0, 0);
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static SENSOR_DEVICE_ATTR_2_RO(temp2_input, temp, 0, 1);
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static SENSOR_DEVICE_ATTR_2_RO(temp3_input, temp, 1, 0);
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static SENSOR_DEVICE_ATTR_2_RO(temp4_input, temp, 1, 1);
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static DEVICE_ATTR_RO(name);
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static const struct pci_device_id k8temp_ids[] = {
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{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_K8_NB_MISC) },
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{ 0 },
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};
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MODULE_DEVICE_TABLE(pci, k8temp_ids);
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static int is_rev_g_desktop(u8 model)
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@ -159,14 +67,76 @@ static int is_rev_g_desktop(u8 model)
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return 1;
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}
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static umode_t
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k8temp_is_visible(const void *drvdata, enum hwmon_sensor_types type,
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u32 attr, int channel)
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{
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const struct k8temp_data *data = drvdata;
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if ((channel & 1) && !(data->sensorsp & SEL_PLACE))
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return 0;
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if ((channel & 2) && !(data->sensorsp & SEL_CORE))
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return 0;
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return 0444;
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}
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static int
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k8temp_read(struct device *dev, enum hwmon_sensor_types type,
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u32 attr, int channel, long *val)
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{
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struct k8temp_data *data = dev_get_drvdata(dev);
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struct pci_dev *pdev = to_pci_dev(dev->parent);
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int core, place;
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u32 temp;
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u8 tmp;
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core = (channel >> 1) & 1;
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place = channel & 1;
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core ^= data->swap_core_select;
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mutex_lock(&data->update_lock);
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pci_read_config_byte(pdev, REG_TEMP, &tmp);
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tmp &= ~(SEL_PLACE | SEL_CORE);
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if (core)
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tmp |= SEL_CORE;
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if (place)
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tmp |= SEL_PLACE;
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pci_write_config_byte(pdev, REG_TEMP, tmp);
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pci_read_config_dword(pdev, REG_TEMP, &temp);
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mutex_unlock(&data->update_lock);
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*val = TEMP_FROM_REG(temp) + data->temp_offset;
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return 0;
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}
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static const struct hwmon_ops k8temp_ops = {
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.is_visible = k8temp_is_visible,
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.read = k8temp_read,
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};
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static const struct hwmon_channel_info *k8temp_info[] = {
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HWMON_CHANNEL_INFO(temp,
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HWMON_T_INPUT, HWMON_T_INPUT, HWMON_T_INPUT, HWMON_T_INPUT),
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NULL
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};
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static const struct hwmon_chip_info k8temp_chip_info = {
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.ops = &k8temp_ops,
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.info = k8temp_info,
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};
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static int k8temp_probe(struct pci_dev *pdev,
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const struct pci_device_id *id)
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{
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int err;
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u8 scfg;
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u32 temp;
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u8 model, stepping;
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struct k8temp_data *data;
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struct device *hwmon_dev;
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data = devm_kzalloc(&pdev->dev, sizeof(struct k8temp_data), GFP_KERNEL);
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if (!data)
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@ -231,86 +201,21 @@ static int k8temp_probe(struct pci_dev *pdev,
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data->sensorsp &= ~SEL_CORE;
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}
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data->name = "k8temp";
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mutex_init(&data->update_lock);
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pci_set_drvdata(pdev, data);
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/* Register sysfs hooks */
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err = device_create_file(&pdev->dev,
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&sensor_dev_attr_temp1_input.dev_attr);
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if (err)
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goto exit_remove;
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hwmon_dev = devm_hwmon_device_register_with_info(&pdev->dev,
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"k8temp",
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data,
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&k8temp_chip_info,
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NULL);
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/* sensor can be changed and reports something */
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if (data->sensorsp & SEL_PLACE) {
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err = device_create_file(&pdev->dev,
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&sensor_dev_attr_temp2_input.dev_attr);
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if (err)
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goto exit_remove;
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}
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/* core can be changed and reports something */
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if (data->sensorsp & SEL_CORE) {
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err = device_create_file(&pdev->dev,
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&sensor_dev_attr_temp3_input.dev_attr);
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if (err)
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goto exit_remove;
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if (data->sensorsp & SEL_PLACE) {
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err = device_create_file(&pdev->dev,
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&sensor_dev_attr_temp4_input.
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dev_attr);
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if (err)
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goto exit_remove;
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}
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}
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err = device_create_file(&pdev->dev, &dev_attr_name);
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if (err)
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goto exit_remove;
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data->hwmon_dev = hwmon_device_register(&pdev->dev);
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if (IS_ERR(data->hwmon_dev)) {
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err = PTR_ERR(data->hwmon_dev);
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goto exit_remove;
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}
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return 0;
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exit_remove:
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device_remove_file(&pdev->dev,
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&sensor_dev_attr_temp1_input.dev_attr);
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device_remove_file(&pdev->dev,
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&sensor_dev_attr_temp2_input.dev_attr);
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device_remove_file(&pdev->dev,
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&sensor_dev_attr_temp3_input.dev_attr);
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device_remove_file(&pdev->dev,
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&sensor_dev_attr_temp4_input.dev_attr);
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device_remove_file(&pdev->dev, &dev_attr_name);
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return err;
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}
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static void k8temp_remove(struct pci_dev *pdev)
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{
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struct k8temp_data *data = pci_get_drvdata(pdev);
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hwmon_device_unregister(data->hwmon_dev);
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device_remove_file(&pdev->dev,
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&sensor_dev_attr_temp1_input.dev_attr);
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device_remove_file(&pdev->dev,
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&sensor_dev_attr_temp2_input.dev_attr);
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device_remove_file(&pdev->dev,
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&sensor_dev_attr_temp3_input.dev_attr);
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device_remove_file(&pdev->dev,
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&sensor_dev_attr_temp4_input.dev_attr);
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device_remove_file(&pdev->dev, &dev_attr_name);
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return PTR_ERR_OR_ZERO(hwmon_dev);
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}
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static struct pci_driver k8temp_driver = {
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.name = "k8temp",
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.id_table = k8temp_ids,
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.probe = k8temp_probe,
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.remove = k8temp_remove,
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};
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module_pci_driver(k8temp_driver);
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