diff options
Diffstat (limited to 'drivers/clk/qcom/clk-branch.h')
| -rw-r--r-- | drivers/clk/qcom/clk-branch.h | 92 |
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 |