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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/clk/sunxi-ng/ccu_common.h
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/clk/sunxi-ng/ccu_common.h')
-rw-r--r--drivers/clk/sunxi-ng/ccu_common.h78
1 files changed, 78 insertions, 0 deletions
diff --git a/drivers/clk/sunxi-ng/ccu_common.h b/drivers/clk/sunxi-ng/ccu_common.h
new file mode 100644
index 0000000000..942a72c094
--- /dev/null
+++ b/drivers/clk/sunxi-ng/ccu_common.h
@@ -0,0 +1,78 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2016 Maxime Ripard. All rights reserved.
+ */
+
+#ifndef _COMMON_H_
+#define _COMMON_H_
+
+#include <linux/compiler.h>
+#include <linux/clk-provider.h>
+
+#define CCU_FEATURE_FRACTIONAL BIT(0)
+#define CCU_FEATURE_VARIABLE_PREDIV BIT(1)
+#define CCU_FEATURE_FIXED_PREDIV BIT(2)
+#define CCU_FEATURE_FIXED_POSTDIV BIT(3)
+#define CCU_FEATURE_ALL_PREDIV BIT(4)
+#define CCU_FEATURE_LOCK_REG BIT(5)
+#define CCU_FEATURE_MMC_TIMING_SWITCH BIT(6)
+#define CCU_FEATURE_SIGMA_DELTA_MOD BIT(7)
+#define CCU_FEATURE_KEY_FIELD BIT(8)
+#define CCU_FEATURE_CLOSEST_RATE BIT(9)
+
+/* MMC timing mode switch bit */
+#define CCU_MMC_NEW_TIMING_MODE BIT(30)
+
+struct device_node;
+
+struct ccu_common {
+ void __iomem *base;
+ u16 reg;
+ u16 lock_reg;
+ u32 prediv;
+
+ unsigned long features;
+ spinlock_t *lock;
+ struct clk_hw hw;
+};
+
+static inline struct ccu_common *hw_to_ccu_common(struct clk_hw *hw)
+{
+ return container_of(hw, struct ccu_common, hw);
+}
+
+struct sunxi_ccu_desc {
+ struct ccu_common **ccu_clks;
+ unsigned long num_ccu_clks;
+
+ struct clk_hw_onecell_data *hw_clks;
+
+ struct ccu_reset_map *resets;
+ unsigned long num_resets;
+};
+
+void ccu_helper_wait_for_lock(struct ccu_common *common, u32 lock);
+
+bool ccu_is_better_rate(struct ccu_common *common,
+ unsigned long target_rate,
+ unsigned long current_rate,
+ unsigned long best_rate);
+
+struct ccu_pll_nb {
+ struct notifier_block clk_nb;
+ struct ccu_common *common;
+
+ u32 enable;
+ u32 lock;
+};
+
+#define to_ccu_pll_nb(_nb) container_of(_nb, struct ccu_pll_nb, clk_nb)
+
+int ccu_pll_notifier_register(struct ccu_pll_nb *pll_nb);
+
+int devm_sunxi_ccu_probe(struct device *dev, void __iomem *reg,
+ const struct sunxi_ccu_desc *desc);
+void of_sunxi_ccu_probe(struct device_node *node, void __iomem *reg,
+ const struct sunxi_ccu_desc *desc);
+
+#endif /* _COMMON_H_ */