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-rw-r--r--drivers/clk/qcom/clk-branch.h92
1 files changed, 92 insertions, 0 deletions
diff --git a/drivers/clk/qcom/clk-branch.h b/drivers/clk/qcom/clk-branch.h
new file mode 100644
index 0000000000..0cf800b9d0
--- /dev/null
+++ b/drivers/clk/qcom/clk-branch.h
@@ -0,0 +1,92 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2013, The Linux Foundation. All rights reserved. */
+
+#ifndef __QCOM_CLK_BRANCH_H__
+#define __QCOM_CLK_BRANCH_H__
+
+#include <linux/bitfield.h>
+#include <linux/clk-provider.h>
+
+#include "clk-regmap.h"
+
+/**
+ * struct clk_branch - gating clock with status bit and dynamic hardware gating
+ *
+ * @hwcg_reg: dynamic hardware clock gating register
+ * @hwcg_bit: ORed with @hwcg_reg to enable dynamic hardware clock gating
+ * @halt_reg: halt register
+ * @halt_bit: ANDed with @halt_reg to test for clock halted
+ * @halt_check: type of halt checking to perform
+ * @clkr: handle between common and hardware-specific interfaces
+ *
+ * Clock which can gate its output.
+ */
+struct clk_branch {
+ u32 hwcg_reg;
+ u32 halt_reg;
+ u8 hwcg_bit;
+ u8 halt_bit;
+ u8 halt_check;
+#define BRANCH_VOTED BIT(7) /* Delay on disable */
+#define BRANCH_HALT 0 /* pol: 1 = halt */
+#define BRANCH_HALT_VOTED (BRANCH_HALT | BRANCH_VOTED)
+#define BRANCH_HALT_ENABLE 1 /* pol: 0 = halt */
+#define BRANCH_HALT_ENABLE_VOTED (BRANCH_HALT_ENABLE | BRANCH_VOTED)
+#define BRANCH_HALT_DELAY 2 /* No bit to check; just delay */
+#define BRANCH_HALT_SKIP 3 /* Don't check halt bit */
+
+ struct clk_regmap clkr;
+};
+
+/* Branch clock common bits for HLOS-owned clocks */
+#define CBCR_CLK_OFF BIT(31)
+#define CBCR_NOC_FSM_STATUS GENMASK(30, 28)
+ #define FSM_STATUS_ON BIT(1)
+#define CBCR_FORCE_MEM_CORE_ON BIT(14)
+#define CBCR_FORCE_MEM_PERIPH_ON BIT(13)
+#define CBCR_FORCE_MEM_PERIPH_OFF BIT(12)
+#define CBCR_WAKEUP GENMASK(11, 8)
+#define CBCR_SLEEP GENMASK(7, 4)
+
+static inline void qcom_branch_set_force_mem_core(struct regmap *regmap,
+ struct clk_branch clk, bool on)
+{
+ regmap_update_bits(regmap, clk.halt_reg, CBCR_FORCE_MEM_CORE_ON,
+ on ? CBCR_FORCE_MEM_CORE_ON : 0);
+}
+
+static inline void qcom_branch_set_force_periph_on(struct regmap *regmap,
+ struct clk_branch clk, bool on)
+{
+ regmap_update_bits(regmap, clk.halt_reg, CBCR_FORCE_MEM_PERIPH_ON,
+ on ? CBCR_FORCE_MEM_PERIPH_ON : 0);
+}
+
+static inline void qcom_branch_set_force_periph_off(struct regmap *regmap,
+ struct clk_branch clk, bool on)
+{
+ regmap_update_bits(regmap, clk.halt_reg, CBCR_FORCE_MEM_PERIPH_OFF,
+ on ? CBCR_FORCE_MEM_PERIPH_OFF : 0);
+}
+
+static inline void qcom_branch_set_wakeup(struct regmap *regmap, struct clk_branch clk, u32 val)
+{
+ regmap_update_bits(regmap, clk.halt_reg, CBCR_WAKEUP,
+ FIELD_PREP(CBCR_WAKEUP, val));
+}
+
+static inline void qcom_branch_set_sleep(struct regmap *regmap, struct clk_branch clk, u32 val)
+{
+ regmap_update_bits(regmap, clk.halt_reg, CBCR_SLEEP,
+ FIELD_PREP(CBCR_SLEEP, val));
+}
+
+extern const struct clk_ops clk_branch_ops;
+extern const struct clk_ops clk_branch2_ops;
+extern const struct clk_ops clk_branch_simple_ops;
+extern const struct clk_ops clk_branch2_aon_ops;
+
+#define to_clk_branch(_hw) \
+ container_of(to_clk_regmap(_hw), struct clk_branch, clkr)
+
+#endif