linux-kernel - [PATCH v1 3/5] platform/x86:intel/pmc: Improve function to show substate header

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Message-ID: <20250621210529.237964-4-xi.pardee@linux.intel.com>
Date: Sat, 21 Jun 2025 14:05:23 -0700
From: Xi Pardee <xi.pardee@...ux.intel.com>
To: xi.pardee@...ux.intel.com,
	irenic.rajneesh@...il.com,
	david.e.box@...ux.intel.com,
	hdegoede@...hat.com,
	ilpo.jarvinen@...ux.intel.com,
	platform-driver-x86@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-pm@...r.kernel.org
Subject: [PATCH v1 3/5] platform/x86:intel/pmc: Improve function to show substate header

Refactor pmc_core_substate_req_header_show() to accept a new argument.
This is a preparation patch to introduce a new way to show Low Power
Mode substate requirement data for platforms starting from Panther
Lake. Increased the size for the name column as the Low Power Mode
requirement register name is longer in newer platforms.

Signed-off-by: Xi Pardee <xi.pardee@...ux.intel.com>
---
 drivers/platform/x86/intel/pmc/core.c | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/drivers/platform/x86/intel/pmc/core.c b/drivers/platform/x86/intel/pmc/core.c
index a1dd80bdbd413..47cc5120e7dd6 100644
--- a/drivers/platform/x86/intel/pmc/core.c
+++ b/drivers/platform/x86/intel/pmc/core.c
@@ -828,17 +828,20 @@ static int pmc_core_substate_l_sts_regs_show(struct seq_file *s, void *unused)
 }
 DEFINE_SHOW_ATTRIBUTE(pmc_core_substate_l_sts_regs);
 
-static void pmc_core_substate_req_header_show(struct seq_file *s, int pmc_index)
+static void pmc_core_substate_req_header_show(struct seq_file *s, int pmc_index, char *name)
 {
 	struct pmc_dev *pmcdev = s->private;
 	int mode;
 
-	seq_printf(s, "%30s |", "Element");
+	seq_printf(s, "%40s |", "Element");
 	pmc_for_each_mode(mode, pmcdev)
 		seq_printf(s, " %9s |", pmc_lpm_modes[mode]);
 
-	seq_printf(s, " %9s |", "Status");
-	seq_printf(s, " %11s |\n", "Live Status");
+	if (!strcmp(name, "Status")) {
+		seq_printf(s, " %9s |", name);
+		seq_printf(s, " %11s |\n", "Live Status");
+	} else
+		seq_printf(s, " %9s |\n", name);
 }
 
 static int pmc_core_substate_req_regs_show(struct seq_file *s, void *unused)
@@ -872,7 +875,7 @@ static int pmc_core_substate_req_regs_show(struct seq_file *s, void *unused)
 			continue;
 
 		/* Display the header */
-		pmc_core_substate_req_header_show(s, pmc_index);
+		pmc_core_substate_req_header_show(s, pmc_index, "Status");
 
 		/* Loop over maps */
 		for (mp = 0; mp < num_maps; mp++) {
@@ -910,7 +913,7 @@ static int pmc_core_substate_req_regs_show(struct seq_file *s, void *unused)
 				}
 
 				/* Display the element name in the first column */
-				seq_printf(s, "pmc%d: %26s |", pmc_index, map[i].name);
+				seq_printf(s, "pmc%d: %34s |", pmc_index, map[i].name);
 
 				/* Loop over the enabled states and display if required */
 				pmc_for_each_mode(mode, pmcdev) {
-- 
2.43.0