1 files changed, 37 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/tegra-common/pwfm.c b/arch/arm/cpu/armv7/tegra-common/pwfm.c
new file mode 100644
index 0000000000..5ef4363082
--- /dev/null
+++ b/arch/arm/cpu/armv7/tegra-common/pwfm.c
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/* Tegra2 pulse width frequency modulator definitions */
+
+#include <asm/io.h>
+#include <asm/arch-tegra/bitfield.h>
+#include <asm/arch-tegra/pwfm.h>
+
+void pwfm_setup(struct pwfm_ctlr *pwfm, int enable, int pulse_width,
+		int freq_divider)
+{
+	u32 reg;
+
+	reg = bf_pack(PWFM_ENABLE, enable) |
+		bf_pack(PWFM_WIDTH, pulse_width) |
+		bf_pack(PWFM_DIVIDER, freq_divider);
+	writel(reg, &pwfm->control);
+}