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hwmon: (k10temp) Take out debugfs code 

The debugfs code was intended to aid figuring out functionality
of undocumented registers. Turns out that wasn't very helpful,
since register locations change too much between AMD chip revisions,
and the data isn't really valuable for chips where it isn't already
supported. On top of that, its existence has been used as argument
for providing pseudo-API debugfs functions in other drivers.
So let's just take it out.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Guenter Roeck 2020-09-08 10:13:45 -07:00
parent 7497d4a66c
commit 8999eabf33
1 changed files with 1 additions and 77 deletions
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78
drivers/hwmon/k10temp.c
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@ -21,7 +21,6 @@
*/
#include <linux/bitops.h>
#include <linux/debugfs.h>
#include <linux/err.h>
#include <linux/hwmon.h>
#include <linux/init.h>
@ -422,76 +421,6 @@ static bool has_erratum_319(struct pci_dev *pdev)
(boot_cpu_data.x86_model == 4 && boot_cpu_data.x86_stepping <= 2);
}
#ifdef CONFIG_DEBUG_FS
static void k10temp_smn_regs_show(struct seq_file *s, struct pci_dev *pdev,
u32 addr, int count)
{
u32 reg;
int i;
for (i = 0; i < count; i++) {
if (!(i & 3))
seq_printf(s, "0x%06x: ", addr + i * 4);
amd_smn_read(amd_pci_dev_to_node_id(pdev), addr + i * 4, &reg);
seq_printf(s, "%08x ", reg);
if ((i & 3) == 3)
seq_puts(s, "\n");
}
}
static int svi_show(struct seq_file *s, void *unused)
{
struct k10temp_data *data = s->private;
k10temp_smn_regs_show(s, data->pdev, ZEN_SVI_BASE, 32);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(svi);
static int thm_show(struct seq_file *s, void *unused)
{
struct k10temp_data *data = s->private;
k10temp_smn_regs_show(s, data->pdev,
ZEN_REPORTED_TEMP_CTRL_OFFSET, 256);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(thm);
static void k10temp_debugfs_cleanup(void *ddir)
{
debugfs_remove_recursive(ddir);
}
static void k10temp_init_debugfs(struct k10temp_data *data)
{
struct dentry *debugfs;
char name[32];
/* Only show debugfs data for Family 17h/18h CPUs */
if (!data->is_zen)
return;
scnprintf(name, sizeof(name), "k10temp-%s", pci_name(data->pdev));
debugfs = debugfs_create_dir(name, NULL);
if (debugfs) {
debugfs_create_file("svi", 0444, debugfs, data, &svi_fops);
debugfs_create_file("thm", 0444, debugfs, data, &thm_fops);
devm_add_action_or_reset(&data->pdev->dev,
k10temp_debugfs_cleanup, debugfs);
}
}
#else
static void k10temp_init_debugfs(struct k10temp_data *data)
{
}
#endif
static const struct hwmon_channel_info *k10temp_info[] = {
HWMON_CHANNEL_INFO(temp,
HWMON_T_INPUT | HWMON_T_MAX |
@ -616,12 +545,7 @@ static int k10temp_probe(struct pci_dev *pdev, const struct pci_device_id *id)
hwmon_dev = devm_hwmon_device_register_with_info(dev, "k10temp", data,
&k10temp_chip_info,
NULL);
if (IS_ERR(hwmon_dev))
return PTR_ERR(hwmon_dev);
k10temp_init_debugfs(data);
return 0;
return PTR_ERR_OR_ZERO(hwmon_dev);
}
static const struct pci_device_id k10temp_id_table[] = {