diff options
| author | Xi Pardee <xi.pardee@linux.intel.com> | 2024-06-24 13:32:18 -0700 |
|---|---|---|
| committer | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2024-07-08 10:44:03 +0300 |
| commit | 4dea807fa7e75275efa75f4d6caa72a082f3c86d (patch) | |
| tree | a22540344dec132c26eff849e9eb32f6e3da67ab /drivers/platform | |
| parent | 9e7f1e71561899e669ecc205e56027960c37a50c (diff) | |
platform/x86:intel/pmc: Add support to undo ltr_ignore
Add ltr_restore support to undo the ltr_ignore action. It sets the
ltr_ignore bit of the corresponding IP to 0. Ltr_restore reuses some
functionality of pmc_core_ltr_ignore_write() so moved the common
functionality into a helper function.
Signed-off-by: Xi Pardee <xi.pardee@linux.intel.com>
Link: https://lore.kernel.org/r/20240624203218.2428475-10-xi.pardee@linux.intel.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/x86/intel/pmc/core.c | 38 |
1 files changed, 32 insertions, 6 deletions
diff --git a/drivers/platform/x86/intel/pmc/core.c b/drivers/platform/x86/intel/pmc/core.c index dcda4c0abe6b..01ae71c6df59 100644 --- a/drivers/platform/x86/intel/pmc/core.c +++ b/drivers/platform/x86/intel/pmc/core.c @@ -507,12 +507,10 @@ int pmc_core_send_ltr_ignore(struct pmc_dev *pmcdev, u32 value, int ignore) return 0; } -static ssize_t pmc_core_ltr_ignore_write(struct file *file, - const char __user *userbuf, - size_t count, loff_t *ppos) +static ssize_t pmc_core_ltr_write(struct pmc_dev *pmcdev, + const char __user *userbuf, + size_t count, int ignore) { - struct seq_file *s = file->private_data; - struct pmc_dev *pmcdev = s->private; u32 value; int err; @@ -520,17 +518,43 @@ static ssize_t pmc_core_ltr_ignore_write(struct file *file, if (err) return err; - err = pmc_core_send_ltr_ignore(pmcdev, value, 1); + err = pmc_core_send_ltr_ignore(pmcdev, value, ignore); return err ?: count; } +static ssize_t pmc_core_ltr_ignore_write(struct file *file, + const char __user *userbuf, + size_t count, loff_t *ppos) +{ + struct seq_file *s = file->private_data; + struct pmc_dev *pmcdev = s->private; + + return pmc_core_ltr_write(pmcdev, userbuf, count, 1); +} + static int pmc_core_ltr_ignore_show(struct seq_file *s, void *unused) { return 0; } DEFINE_SHOW_STORE_ATTRIBUTE(pmc_core_ltr_ignore); +static ssize_t pmc_core_ltr_restore_write(struct file *file, + const char __user *userbuf, + size_t count, loff_t *ppos) +{ + struct seq_file *s = file->private_data; + struct pmc_dev *pmcdev = s->private; + + return pmc_core_ltr_write(pmcdev, userbuf, count, 0); +} + +static int pmc_core_ltr_restore_show(struct seq_file *s, void *unused) +{ + return 0; +} +DEFINE_SHOW_STORE_ATTRIBUTE(pmc_core_ltr_restore); + static void pmc_core_slps0_dbg_latch(struct pmc_dev *pmcdev, bool reset) { struct pmc *pmc = pmcdev->pmcs[PMC_IDX_MAIN]; @@ -1208,6 +1232,8 @@ static void pmc_core_dbgfs_register(struct pmc_dev *pmcdev) debugfs_create_file("ltr_ignore", 0644, dir, pmcdev, &pmc_core_ltr_ignore_fops); + debugfs_create_file("ltr_restore", 0200, dir, pmcdev, &pmc_core_ltr_restore_fops); + debugfs_create_file("ltr_show", 0444, dir, pmcdev, &pmc_core_ltr_fops); if (primary_pmc->map->s0ix_blocker_maps) |