Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 51 insertions, 0 deletions

diff --git a/arch/mips/loongson2ef/lemote-2f/clock.c b/arch/mips/loongson2ef/lemote-2f/clock.c
new file mode 100644
index 000000000..850b6b9f8
--- /dev/null
+++ b/arch/mips/loongson2ef/lemote-2f/clock.c
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2006 - 2008 Lemote Inc. & Institute of Computing Technology
+ * Author: Yanhua, yanh@lemote.com
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/cpufreq.h>
+#include <linux/errno.h>
+#include <linux/export.h>
+
+#include <asm/mach-loongson2ef/loongson.h>
+
+enum {
+	DC_ZERO, DC_25PT = 2, DC_37PT, DC_50PT, DC_62PT, DC_75PT,
+	DC_87PT, DC_DISABLE, DC_RESV
+};
+
+struct cpufreq_frequency_table loongson2_clockmod_table[] = {
+	{0, DC_RESV, CPUFREQ_ENTRY_INVALID},
+	{0, DC_ZERO, CPUFREQ_ENTRY_INVALID},
+	{0, DC_25PT, 0},
+	{0, DC_37PT, 0},
+	{0, DC_50PT, 0},
+	{0, DC_62PT, 0},
+	{0, DC_75PT, 0},
+	{0, DC_87PT, 0},
+	{0, DC_DISABLE, 0},
+	{0, DC_RESV, CPUFREQ_TABLE_END},
+};
+EXPORT_SYMBOL_GPL(loongson2_clockmod_table);
+
+int loongson2_cpu_set_rate(unsigned long rate_khz)
+{
+	struct cpufreq_frequency_table *pos;
+	int regval;
+
+	cpufreq_for_each_valid_entry(pos, loongson2_clockmod_table)
+		if (rate_khz == pos->frequency)
+			break;
+	if (rate_khz != pos->frequency)
+		return -ENOTSUPP;
+
+	regval = readl(LOONGSON_CHIPCFG);
+	regval = (regval & ~0x7) | (pos->driver_data - 1);
+	writel(regval, LOONGSON_CHIPCFG);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(loongson2_cpu_set_rate);