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- /* SPDX-License-Identifier: GPL-2.0-only */
- /*
- * Copyright (c) 2017 Chen-Yu Tsai. All rights reserved.
- */
- #ifndef _CCU_SDM_H
- #define _CCU_SDM_H
- #include <linux/clk-provider.h>
- #include "ccu_common.h"
- struct ccu_sdm_setting {
- unsigned long rate;
- /*
- * XXX We don't know what the step and bottom register fields
- * mean. Just copy the whole register value from the vendor
- * kernel for now.
- */
- u32 pattern;
- /*
- * M and N factors here should be the values used in
- * calculation, not the raw values written to registers
- */
- u32 m;
- u32 n;
- };
- struct ccu_sdm_internal {
- struct ccu_sdm_setting *table;
- u32 table_size;
- /* early SoCs don't have the SDM enable bit in the PLL register */
- u32 enable;
- /* second enable bit in tuning register */
- u32 tuning_enable;
- u16 tuning_reg;
- };
- #define _SUNXI_CCU_SDM(_table, _enable, \
- _reg, _reg_enable) \
- { \
- .table = _table, \
- .table_size = ARRAY_SIZE(_table), \
- .enable = _enable, \
- .tuning_enable = _reg_enable, \
- .tuning_reg = _reg, \
- }
- bool ccu_sdm_helper_is_enabled(struct ccu_common *common,
- struct ccu_sdm_internal *sdm);
- void ccu_sdm_helper_enable(struct ccu_common *common,
- struct ccu_sdm_internal *sdm,
- unsigned long rate);
- void ccu_sdm_helper_disable(struct ccu_common *common,
- struct ccu_sdm_internal *sdm);
- bool ccu_sdm_helper_has_rate(struct ccu_common *common,
- struct ccu_sdm_internal *sdm,
- unsigned long rate);
- unsigned long ccu_sdm_helper_read_rate(struct ccu_common *common,
- struct ccu_sdm_internal *sdm,
- u32 m, u32 n);
- int ccu_sdm_helper_get_factors(struct ccu_common *common,
- struct ccu_sdm_internal *sdm,
- unsigned long rate,
- unsigned long *m, unsigned long *n);
- #endif
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