drivers/clk/sunxi-ng/ccu_common.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright (c) 2016 Maxime Ripard. All rights reserved.
   4  */
   5
   6 #ifndef _COMMON_H_
   7 #define _COMMON_H_
   8
   9 #include <linux/compiler.h>
  10 #include <linux/clk-provider.h>
  11
  12 #define CCU_FEATURE_FRACTIONAL          BIT(0)
  13 #define CCU_FEATURE_VARIABLE_PREDIV     BIT(1)
  14 #define CCU_FEATURE_FIXED_PREDIV        BIT(2)
  15 #define CCU_FEATURE_FIXED_POSTDIV       BIT(3)
  16 #define CCU_FEATURE_ALL_PREDIV          BIT(4)
  17 #define CCU_FEATURE_LOCK_REG            BIT(5)
  18 #define CCU_FEATURE_MMC_TIMING_SWITCH   BIT(6)
  19 #define CCU_FEATURE_SIGMA_DELTA_MOD     BIT(7)
  20 #define CCU_FEATURE_KEY_FIELD           BIT(8)
  21
  22 /* MMC timing mode switch bit */
  23 #define CCU_MMC_NEW_TIMING_MODE         BIT(30)
  24
  25 struct device_node;
  26
  27 struct ccu_common {
  28         void __iomem    *base;
  29         u16             reg;
  30         u16             lock_reg;
  31         u32             prediv;
  32
  33         unsigned long   features;
  34         spinlock_t      *lock;
  35         struct clk_hw   hw;
  36 };
  37
  38 static inline struct ccu_common *hw_to_ccu_common(struct clk_hw *hw)
  39 {
  40         return container_of(hw, struct ccu_common, hw);
  41 }
  42
  43 struct sunxi_ccu_desc {
  44         struct ccu_common               **ccu_clks;
  45         unsigned long                   num_ccu_clks;
  46
  47         struct clk_hw_onecell_data      *hw_clks;
  48
  49         struct ccu_reset_map            *resets;
  50         unsigned long                   num_resets;
  51 };
  52
  53 void ccu_helper_wait_for_lock(struct ccu_common *common, u32 lock);
  54
  55 struct ccu_pll_nb {
  56         struct notifier_block   clk_nb;
  57         struct ccu_common       *common;
  58
  59         u32     enable;
  60         u32     lock;
  61 };
  62
  63 #define to_ccu_pll_nb(_nb) container_of(_nb, struct ccu_pll_nb, clk_nb)
  64
  65 int ccu_pll_notifier_register(struct ccu_pll_nb *pll_nb);
  66
  67 int devm_sunxi_ccu_probe(struct device *dev, void __iomem *reg,
  68                          const struct sunxi_ccu_desc *desc);
  69 void of_sunxi_ccu_probe(struct device_node *node, void __iomem *reg,
  70                         const struct sunxi_ccu_desc *desc);
  71
  72 #endif /* _COMMON_H_ */