summaryrefslogtreecommitdiffstats
path: root/drivers/clk/sprd/pll.h
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/clk/sprd/pll.h')
-rw-r--r--drivers/clk/sprd/pll.h127
1 files changed, 127 insertions, 0 deletions
diff --git a/drivers/clk/sprd/pll.h b/drivers/clk/sprd/pll.h
new file mode 100644
index 000000000..6558f50d0
--- /dev/null
+++ b/drivers/clk/sprd/pll.h
@@ -0,0 +1,127 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+//
+// Spreadtrum pll clock driver
+//
+// Copyright (C) 2015~2017 Spreadtrum, Inc.
+// Author: Chunyan Zhang <chunyan.zhang@spreadtrum.com>
+
+#ifndef _SPRD_PLL_H_
+#define _SPRD_PLL_H_
+
+#include "common.h"
+
+struct reg_cfg {
+ u32 val;
+ u32 msk;
+};
+
+struct clk_bit_field {
+ u8 shift;
+ u8 width;
+};
+
+enum {
+ PLL_LOCK_DONE,
+ PLL_DIV_S,
+ PLL_MOD_EN,
+ PLL_SDM_EN,
+ PLL_REFIN,
+ PLL_IBIAS,
+ PLL_N,
+ PLL_NINT,
+ PLL_KINT,
+ PLL_PREDIV,
+ PLL_POSTDIV,
+
+ PLL_FACT_MAX
+};
+
+/*
+ * struct sprd_pll - definition of adjustable pll clock
+ *
+ * @reg: registers used to set the configuration of pll clock,
+ * reg[0] shows how many registers this pll clock uses.
+ * @itable: pll ibias table, itable[0] means how many items this
+ * table includes
+ * @udelay delay time after setting rate
+ * @factors used to calculate the pll clock rate
+ * @fvco: fvco threshold rate
+ * @fflag: fvco flag
+ */
+struct sprd_pll {
+ u32 regs_num;
+ const u64 *itable;
+ const struct clk_bit_field *factors;
+ u16 udelay;
+ u16 k1;
+ u16 k2;
+ u16 fflag;
+ u64 fvco;
+
+ struct sprd_clk_common common;
+};
+
+#define SPRD_PLL_HW_INIT_FN(_struct, _name, _parent, _reg, \
+ _regs_num, _itable, _factors, \
+ _udelay, _k1, _k2, _fflag, \
+ _fvco, _fn) \
+ struct sprd_pll _struct = { \
+ .regs_num = _regs_num, \
+ .itable = _itable, \
+ .factors = _factors, \
+ .udelay = _udelay, \
+ .k1 = _k1, \
+ .k2 = _k2, \
+ .fflag = _fflag, \
+ .fvco = _fvco, \
+ .common = { \
+ .regmap = NULL, \
+ .reg = _reg, \
+ .hw.init = _fn(_name, _parent, \
+ &sprd_pll_ops, 0),\
+ }, \
+ }
+
+#define SPRD_PLL_WITH_ITABLE_K_FVCO(_struct, _name, _parent, _reg, \
+ _regs_num, _itable, _factors, \
+ _udelay, _k1, _k2, _fflag, _fvco) \
+ SPRD_PLL_HW_INIT_FN(_struct, _name, _parent, _reg, _regs_num, \
+ _itable, _factors, _udelay, _k1, _k2, \
+ _fflag, _fvco, CLK_HW_INIT)
+
+#define SPRD_PLL_WITH_ITABLE_K(_struct, _name, _parent, _reg, \
+ _regs_num, _itable, _factors, \
+ _udelay, _k1, _k2) \
+ SPRD_PLL_WITH_ITABLE_K_FVCO(_struct, _name, _parent, _reg, \
+ _regs_num, _itable, _factors, \
+ _udelay, _k1, _k2, 0, 0)
+
+#define SPRD_PLL_WITH_ITABLE_1K(_struct, _name, _parent, _reg, \
+ _regs_num, _itable, _factors, _udelay) \
+ SPRD_PLL_WITH_ITABLE_K_FVCO(_struct, _name, _parent, _reg, \
+ _regs_num, _itable, _factors, \
+ _udelay, 1000, 1000, 0, 0)
+
+#define SPRD_PLL_FW_NAME(_struct, _name, _parent, _reg, _regs_num, \
+ _itable, _factors, _udelay, _k1, _k2, \
+ _fflag, _fvco) \
+ SPRD_PLL_HW_INIT_FN(_struct, _name, _parent, _reg, _regs_num, \
+ _itable, _factors, _udelay, _k1, _k2, \
+ _fflag, _fvco, CLK_HW_INIT_FW_NAME)
+
+#define SPRD_PLL_HW(_struct, _name, _parent, _reg, _regs_num, _itable, \
+ _factors, _udelay, _k1, _k2, _fflag, _fvco) \
+ SPRD_PLL_HW_INIT_FN(_struct, _name, _parent, _reg, _regs_num, \
+ _itable, _factors, _udelay, _k1, _k2, \
+ _fflag, _fvco, CLK_HW_INIT_HW)
+
+static inline struct sprd_pll *hw_to_sprd_pll(struct clk_hw *hw)
+{
+ struct sprd_clk_common *common = hw_to_sprd_clk_common(hw);
+
+ return container_of(common, struct sprd_pll, common);
+}
+
+extern const struct clk_ops sprd_pll_ops;
+
+#endif /* _SPRD_PLL_H_ */