/* 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;
};
/**
* struct clk_mem_branch - gating clock which are associated with memories
*
* @ mem_enable_reg : branch clock memory gating register
* @ mem_ack_reg : branch clock memory ack register
* @ mem_enable_ack_mask : branch clock memory enable and ack field in @ mem_ack_reg
* @ branch : branch clock gating handle
*
* Clock which can gate its memories .
*/
struct clk_mem_branch {
u32 mem_enable_reg;
u32 mem_ack_reg;
u32 mem_enable_ack_mask;
struct clk_branch branch;
};
/* 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 )
#define CBCR_CLOCK_ENABLE BIT(0 )
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));
}
static inline void qcom_branch_set_clk_en(struct regmap *regmap, u32 cbcr)
{
regmap_update_bits(regmap, cbcr, CBCR_CLOCK_ENABLE, CBCR_CLOCK_ENABLE);
}
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;
extern const struct clk_ops clk_branch2_mem_ops;
extern const struct clk_ops clk_branch2_prepare_ops;
#define to_clk_branch(_hw) \
container_of(to_clk_regmap(_hw), struct clk_branch, clkr)
#define to_clk_mem_branch(_hw) \
container_of(to_clk_branch(_hw), struct clk_mem_branch, branch)
#endif
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¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-09-30)
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