hwmon: (k10temp) Add debugfs support (9c4a38f1) · Commits · 戴 / test

drivers/hwmon/k10temp.c

+77 −1

Original line number	Diff line number	Diff line
		@@ -26,6 +26,7 @@
		*/

		#include <linux/bitops.h>
		#include <linux/debugfs.h>
		#include <linux/err.h>
		#include <linux/hwmon.h>
		#include <linux/init.h>
		@@ -442,6 +443,76 @@ 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, F17H_M01H_SVI, 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,
		F17H_M01H_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->show_tdie)
		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 \|
		@@ -553,7 +624,12 @@ 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);
		return PTR_ERR_OR_ZERO(hwmon_dev);
		if (IS_ERR(hwmon_dev))
		return PTR_ERR(hwmon_dev);

		k10temp_init_debugfs(data);

		return 0;
		}

		static const struct pci_device_id k10temp_id_table[] = {

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