From: Sepherosa Ziehau <sephe@dragonflybsd.org>
Date: Sat, 27 Jun 2015 04:13:20 +0000 (+0800)
Subject: acpi/pstate: Add binary form for available CPU power domain frequencies
X-Git-Url: https://gitweb.dragonflybsd.org/~nant/dragonfly.git/commitdiff_plain/1555fc97369c8ae4e45302718371d81e6e5c2291

acpi/pstate: Add binary form for available CPU power domain frequencies
---

diff --git a/sys/dev/acpica/acpi_cpu_pstate.c b/sys/dev/acpica/acpi_cpu_pstate.c
index a819d90253..844031bb32 100644
--- a/sys/dev/acpica/acpi_cpu_pstate.c
+++ b/sys/dev/acpica/acpi_cpu_pstate.c
@@ -144,6 +144,7 @@ static void	acpi_pst_set_pstate_handler(netmsg_t);
 static void	acpi_pst_get_pstate_handler(netmsg_t);
 
 static int	acpi_pst_sysctl_freqs(SYSCTL_HANDLER_ARGS);
+static int	acpi_pst_sysctl_freqs_bin(SYSCTL_HANDLER_ARGS);
 static int	acpi_pst_sysctl_members(SYSCTL_HANDLER_ARGS);
 static int	acpi_pst_sysctl_select(SYSCTL_HANDLER_ARGS);
 static int	acpi_pst_sysctl_global(SYSCTL_HANDLER_ARGS);
@@ -1021,6 +1022,13 @@ acpi_pst_postattach(void *arg __unused)
 				dom, 0, acpi_pst_sysctl_freqs, "A",
 				"available frequencies");
 
+		SYSCTL_ADD_PROC(&dom->pd_sysctl_ctx,
+				SYSCTL_CHILDREN(dom->pd_sysctl_tree),
+				OID_AUTO, "available_bin",
+				CTLTYPE_OPAQUE | CTLFLAG_RD,
+				dom, 0, acpi_pst_sysctl_freqs_bin, "IU",
+				"available frequencies (binary format)");
+
 		SYSCTL_ADD_PROC(&dom->pd_sysctl_ctx,
 				SYSCTL_CHILDREN(dom->pd_sysctl_tree),
 				OID_AUTO, "members",
@@ -1082,6 +1090,20 @@ acpi_pst_sysctl_freqs(SYSCTL_HANDLER_ARGS)
 	return error;
 }
 
+static int
+acpi_pst_sysctl_freqs_bin(SYSCTL_HANDLER_ARGS)
+{
+	struct acpi_pst_domain *dom = arg1;
+	uint32_t freqs[ACPI_NPSTATE_MAX];
+	int cnt, i;
+
+	cnt = acpi_npstates - dom->pd_sstart;
+	for (i = 0; i < cnt; ++i)
+		freqs[i] = acpi_pstates[dom->pd_sstart + i].st_freq;
+
+	return sysctl_handle_opaque(oidp, freqs, cnt * sizeof(freqs[0]), req);
+}
+
 static int
 acpi_pst_sysctl_members(SYSCTL_HANDLER_ARGS)
 {