pwm: rockchip: Add a PWM driver for Rockchip SoCs

Add a simple driver which implements the standard PWM uclass interface.

Signed-off-by: Simon Glass <sjg@chromium.org>

1 files changed, 41 insertions, 0 deletions

diff --git a/arch/arm/include/asm/arch-rockchip/pwm.h b/arch/arm/include/asm/arch-rockchip/pwm.h
new file mode 100644
index 0000000000..08ff94591c
--- /dev/null
+++ b/arch/arm/include/asm/arch-rockchip/pwm.h
@@ -0,0 +1,41 @@
+/*
+ * (C) Copyright 2016 Google, Inc
+ * (C) Copyright 2008-2014 Rockchip Electronics
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#ifndef _ASM_ARCH_PWM_H
+#define _ASM_ARCH_PWM_H
+
+struct rk3288_pwm {
+	u32 cnt;
+	u32 period_hpr;
+	u32 duty_lpr;
+	u32 ctrl;
+};
+check_member(rk3288_pwm, ctrl, 0xc);
+
+#define RK_PWM_DISABLE                  (0 << 0)
+#define RK_PWM_ENABLE                   (1 << 0)
+
+#define PWM_ONE_SHOT                    (0 << 1)
+#define PWM_CONTINUOUS                  (1 << 1)
+#define RK_PWM_CAPTURE                  (1 << 2)
+
+#define PWM_DUTY_POSTIVE                (1 << 3)
+#define PWM_DUTY_NEGATIVE               (0 << 3)
+
+#define PWM_INACTIVE_POSTIVE            (1 << 4)
+#define PWM_INACTIVE_NEGATIVE           (0 << 4)
+
+#define PWM_OUTPUT_LEFT                 (0 << 5)
+#define PWM_OUTPUT_CENTER               (1 << 5)
+
+#define PWM_LP_ENABLE                   (1 << 8)
+#define PWM_LP_DISABLE                  (0 << 8)
+
+#define PWM_SEL_SCALE_CLK		(1 << 9)
+#define PWM_SEL_SRC_CLK			(0 << 9)
+
+#endif