diff options
Diffstat (limited to 'drivers/clk/qcom/clk-branch.h')
| -rw-r--r-- | drivers/clk/qcom/clk-branch.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/clk/qcom/clk-branch.h b/drivers/clk/qcom/clk-branch.h new file mode 100644 index 000000000..b3561e0a3 --- /dev/null +++ b/drivers/clk/qcom/clk-branch.h @@ -0,0 +1,47 @@ +/* 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/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; +}; + +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; + +#define to_clk_branch(_hw) \ + container_of(to_clk_regmap(_hw), struct clk_branch, clkr) + +#endif |