| 1 | /* SPDX-License-Identifier: GPL-2.0+ */ |
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| 2 | /* |
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| 3 | * Copyright (C) 2023 Loongson Technology Corporation Limited |
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| 4 | */ |
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| 5 | |
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| 6 | #ifndef __LSDC_GFXPLL_H__ |
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| 7 | #define __LSDC_GFXPLL_H__ |
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| 8 | |
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| 9 | #include <drm/drm_device.h> |
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| 10 | |
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| 11 | struct loongson_gfxpll; |
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| 12 | |
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| 13 | struct loongson_gfxpll_parms { |
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| 14 | unsigned int ref_clock; |
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| 15 | unsigned int div_ref; |
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| 16 | unsigned int loopc; |
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| 17 | unsigned int div_out_dc; |
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| 18 | unsigned int div_out_gmc; |
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| 19 | unsigned int div_out_gpu; |
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| 20 | }; |
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| 21 | |
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| 22 | struct loongson_gfxpll_funcs { |
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| 23 | int (*init)(struct loongson_gfxpll * const this); |
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| 24 | |
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| 25 | int (*update)(struct loongson_gfxpll * const this, |
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| 26 | struct loongson_gfxpll_parms const *pin); |
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| 27 | |
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| 28 | void (*get_rates)(struct loongson_gfxpll * const this, |
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| 29 | unsigned int *dc, unsigned int *gmc, unsigned int *gpu); |
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| 30 | |
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| 31 | void (*print)(struct loongson_gfxpll * const this, |
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| 32 | struct drm_printer *printer, bool verbose); |
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| 33 | }; |
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| 34 | |
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| 35 | struct loongson_gfxpll { |
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| 36 | struct drm_device *ddev; |
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| 37 | void __iomem *mmio; |
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| 38 | |
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| 39 | /* PLL register offset */ |
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| 40 | u32 reg_base; |
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| 41 | /* PLL register size in bytes */ |
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| 42 | u32 reg_size; |
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| 43 | |
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| 44 | const struct loongson_gfxpll_funcs *funcs; |
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| 45 | |
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| 46 | struct loongson_gfxpll_parms parms; |
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| 47 | }; |
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| 48 | |
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| 49 | int loongson_gfxpll_create(struct drm_device *ddev, |
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| 50 | struct loongson_gfxpll **ppout); |
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| 51 | |
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| 52 | #endif |
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| 53 | |
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