53 lines
1.1 KiB
C
53 lines
1.1 KiB
C
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/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (C) 2023 Loongson Technology Corporation Limited
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*/
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#ifndef __LSDC_GFXPLL_H__
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#define __LSDC_GFXPLL_H__
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#include <drm/drm_device.h>
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struct loongson_gfxpll;
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struct loongson_gfxpll_parms {
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unsigned int ref_clock;
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unsigned int div_ref;
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unsigned int loopc;
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unsigned int div_out_dc;
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unsigned int div_out_gmc;
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unsigned int div_out_gpu;
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};
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struct loongson_gfxpll_funcs {
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int (*init)(struct loongson_gfxpll * const this);
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int (*update)(struct loongson_gfxpll * const this,
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struct loongson_gfxpll_parms const *pin);
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void (*get_rates)(struct loongson_gfxpll * const this,
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unsigned int *dc, unsigned int *gmc, unsigned int *gpu);
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void (*print)(struct loongson_gfxpll * const this,
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struct drm_printer *printer, bool verbose);
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};
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struct loongson_gfxpll {
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struct drm_device *ddev;
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void __iomem *mmio;
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/* PLL register offset */
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u32 reg_base;
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/* PLL register size in bytes */
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u32 reg_size;
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const struct loongson_gfxpll_funcs *funcs;
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struct loongson_gfxpll_parms parms;
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};
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int loongson_gfxpll_create(struct drm_device *ddev,
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struct loongson_gfxpll **ppout);
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#endif
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