summaryrefslogtreecommitdiffstats
path: root/drivers/clk/actions/owl-pll.h
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/clk/actions/owl-pll.h')
-rw-r--r--drivers/clk/actions/owl-pll.h92
1 files changed, 92 insertions, 0 deletions
diff --git a/drivers/clk/actions/owl-pll.h b/drivers/clk/actions/owl-pll.h
new file mode 100644
index 000000000000..0aae30abd5dc
--- /dev/null
+++ b/drivers/clk/actions/owl-pll.h
@@ -0,0 +1,92 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// OWL pll clock driver
+//
+// Copyright (c) 2014 Actions Semi Inc.
+// Author: David Liu <liuwei@actions-semi.com>
+//
+// Copyright (c) 2018 Linaro Ltd.
+// Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
+
+#ifndef _OWL_PLL_H_
+#define _OWL_PLL_H_
+
+#include "owl-common.h"
+
+/* last entry should have rate = 0 */
+struct clk_pll_table {
+ unsigned int val;
+ unsigned long rate;
+};
+
+struct owl_pll_hw {
+ u32 reg;
+ u32 bfreq;
+ u8 bit_idx;
+ u8 shift;
+ u8 width;
+ u8 min_mul;
+ u8 max_mul;
+ const struct clk_pll_table *table;
+};
+
+struct owl_pll {
+ struct owl_pll_hw pll_hw;
+ struct owl_clk_common common;
+};
+
+#define OWL_PLL_HW(_reg, _bfreq, _bit_idx, _shift, \
+ _width, _min_mul, _max_mul, _table) \
+ { \
+ .reg = _reg, \
+ .bfreq = _bfreq, \
+ .bit_idx = _bit_idx, \
+ .shift = _shift, \
+ .width = _width, \
+ .min_mul = _min_mul, \
+ .max_mul = _max_mul, \
+ .table = _table, \
+ }
+
+#define OWL_PLL(_struct, _name, _parent, _reg, _bfreq, _bit_idx, \
+ _shift, _width, _min_mul, _max_mul, _table, _flags) \
+ struct owl_pll _struct = { \
+ .pll_hw = OWL_PLL_HW(_reg, _bfreq, _bit_idx, _shift, \
+ _width, _min_mul, \
+ _max_mul, _table), \
+ .common = { \
+ .regmap = NULL, \
+ .hw.init = CLK_HW_INIT(_name, \
+ _parent, \
+ &owl_pll_ops, \
+ _flags), \
+ }, \
+ }
+
+#define OWL_PLL_NO_PARENT(_struct, _name, _reg, _bfreq, _bit_idx, \
+ _shift, _width, _min_mul, _max_mul, _table, _flags) \
+ struct owl_pll _struct = { \
+ .pll_hw = OWL_PLL_HW(_reg, _bfreq, _bit_idx, _shift, \
+ _width, _min_mul, \
+ _max_mul, _table), \
+ .common = { \
+ .regmap = NULL, \
+ .hw.init = CLK_HW_INIT_NO_PARENT(_name, \
+ &owl_pll_ops, \
+ _flags), \
+ }, \
+ }
+
+#define mul_mask(m) ((1 << ((m)->width)) - 1)
+#define PLL_STABILITY_WAIT_US (50)
+
+static inline struct owl_pll *hw_to_owl_pll(const struct clk_hw *hw)
+{
+ struct owl_clk_common *common = hw_to_owl_clk_common(hw);
+
+ return container_of(common, struct owl_pll, common);
+}
+
+extern const struct clk_ops owl_pll_ops;
+
+#endif /* _OWL_PLL_H_ */