// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (C) 2012 Samsung Electronics Co.Ltd * Authors: * Eunchul Kim <[email protected]> * Jinyoung Jeon <[email protected]> * Sangmin Lee <[email protected]> */ #include <linux/clk.h> #include <linux/component.h> #include <linux/kernel.h> #include <linux/mfd/syscon.h> #include <linux/mod_devicetable.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/property.h> #include <linux/regmap.h> #include <drm/drm_fourcc.h> #include <drm/drm_print.h> #include <drm/exynos_drm.h> #include "exynos_drm_drv.h" #include "exynos_drm_ipp.h" #include "regs-gsc.h" /* * GSC stands for General SCaler and * supports image scaler/rotator and input/output DMA operations. * input DMA reads image data from the memory. * output DMA writes image data to memory. * GSC supports image rotation and image effect functions. */ #define GSC_MAX_CLOCKS … #define GSC_MAX_SRC … #define GSC_MAX_DST … #define GSC_RESET_TIMEOUT … #define GSC_BUF_STOP … #define GSC_BUF_START … #define GSC_REG_SZ … #define GSC_WIDTH_ITU_709 … #define GSC_SC_UP_MAX_RATIO … #define GSC_SC_DOWN_RATIO_7_8 … #define GSC_SC_DOWN_RATIO_6_8 … #define GSC_SC_DOWN_RATIO_5_8 … #define GSC_SC_DOWN_RATIO_4_8 … #define GSC_SC_DOWN_RATIO_3_8 … #define GSC_SC_DOWN_RATIO_2_8 … #define GSC_CROP_MAX … #define GSC_CROP_MIN … #define GSC_SCALE_MAX … #define GSC_SCALE_MIN … #define GSC_COEF_RATIO … #define GSC_COEF_PHASE … #define GSC_COEF_ATTR … #define GSC_COEF_H_8T … #define GSC_COEF_V_4T … #define GSC_COEF_DEPTH … #define GSC_AUTOSUSPEND_DELAY … #define get_gsc_context(dev) … #define gsc_read(offset) … #define gsc_write(cfg, offset) … /* * A structure of scaler. * * @range: narrow, wide. * @pre_shfactor: pre sclaer shift factor. * @pre_hratio: horizontal ratio of the prescaler. * @pre_vratio: vertical ratio of the prescaler. * @main_hratio: the main scaler's horizontal ratio. * @main_vratio: the main scaler's vertical ratio. */ struct gsc_scaler { … }; /* * A structure of gsc context. * * @regs: memory mapped io registers. * @gsc_clk: gsc gate clock. * @sc: scaler infomations. * @id: gsc id. * @irq: irq number. * @rotation: supports rotation of src. */ struct gsc_context { … }; /** * struct gsc_driverdata - per device type driver data for init time. * * @limits: picture size limits array * @num_limits: number of items in the aforementioned array * @clk_names: names of clocks needed by this variant * @num_clocks: the number of clocks needed by this variant */ struct gsc_driverdata { … }; /* 8-tap Filter Coefficient */ static const int h_coef_8t[GSC_COEF_RATIO][GSC_COEF_ATTR][GSC_COEF_H_8T] = …; /* 4-tap Filter Coefficient */ static const int v_coef_4t[GSC_COEF_RATIO][GSC_COEF_ATTR][GSC_COEF_V_4T] = …; static int gsc_sw_reset(struct gsc_context *ctx) { … } static void gsc_handle_irq(struct gsc_context *ctx, bool enable, bool overflow, bool done) { … } static void gsc_src_set_fmt(struct gsc_context *ctx, u32 fmt, bool tiled) { … } static void gsc_src_set_transf(struct gsc_context *ctx, unsigned int rotation) { … } static void gsc_src_set_size(struct gsc_context *ctx, struct exynos_drm_ipp_buffer *buf) { … } static void gsc_src_set_buf_seq(struct gsc_context *ctx, u32 buf_id, bool enqueue) { … } static void gsc_src_set_addr(struct gsc_context *ctx, u32 buf_id, struct exynos_drm_ipp_buffer *buf) { … } static void gsc_dst_set_fmt(struct gsc_context *ctx, u32 fmt, bool tiled) { … } static int gsc_get_ratio_shift(struct gsc_context *ctx, u32 src, u32 dst, u32 *ratio) { … } static void gsc_get_prescaler_shfactor(u32 hratio, u32 vratio, u32 *shfactor) { … } static int gsc_set_prescaler(struct gsc_context *ctx, struct gsc_scaler *sc, struct drm_exynos_ipp_task_rect *src, struct drm_exynos_ipp_task_rect *dst) { … } static void gsc_set_h_coef(struct gsc_context *ctx, unsigned long main_hratio) { … } static void gsc_set_v_coef(struct gsc_context *ctx, unsigned long main_vratio) { … } static void gsc_set_scaler(struct gsc_context *ctx, struct gsc_scaler *sc) { … } static void gsc_dst_set_size(struct gsc_context *ctx, struct exynos_drm_ipp_buffer *buf) { … } static int gsc_dst_get_buf_seq(struct gsc_context *ctx) { … } static void gsc_dst_set_buf_seq(struct gsc_context *ctx, u32 buf_id, bool enqueue) { … } static void gsc_dst_set_addr(struct gsc_context *ctx, u32 buf_id, struct exynos_drm_ipp_buffer *buf) { … } static int gsc_get_src_buf_index(struct gsc_context *ctx) { … } static int gsc_get_dst_buf_index(struct gsc_context *ctx) { … } static irqreturn_t gsc_irq_handler(int irq, void *dev_id) { … } static int gsc_reset(struct gsc_context *ctx) { … } static void gsc_start(struct gsc_context *ctx) { … } static int gsc_commit(struct exynos_drm_ipp *ipp, struct exynos_drm_ipp_task *task) { … } static void gsc_abort(struct exynos_drm_ipp *ipp, struct exynos_drm_ipp_task *task) { … } static struct exynos_drm_ipp_funcs ipp_funcs = …; static int gsc_bind(struct device *dev, struct device *master, void *data) { … } static void gsc_unbind(struct device *dev, struct device *master, void *data) { … } static const struct component_ops gsc_component_ops = …; static const unsigned int gsc_formats[] = …; static const unsigned int gsc_tiled_formats[] = …; static int gsc_probe(struct platform_device *pdev) { … } static void gsc_remove(struct platform_device *pdev) { … } static int __maybe_unused gsc_runtime_suspend(struct device *dev) { … } static int __maybe_unused gsc_runtime_resume(struct device *dev) { … } static const struct dev_pm_ops gsc_pm_ops = …; static const struct drm_exynos_ipp_limit gsc_5250_limits[] = …; static const struct drm_exynos_ipp_limit gsc_5420_limits[] = …; static const struct drm_exynos_ipp_limit gsc_5433_limits[] = …; static struct gsc_driverdata gsc_exynos5250_drvdata = …; static struct gsc_driverdata gsc_exynos5420_drvdata = …; static struct gsc_driverdata gsc_exynos5433_drvdata = …; static const struct of_device_id exynos_drm_gsc_of_match[] = …; MODULE_DEVICE_TABLE(of, exynos_drm_gsc_of_match); struct platform_driver gsc_driver = …;
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