// SPDX-License-Identifier: GPL-2.0 // // Ingenic JZ47xx IPU driver // // Copyright (C) 2020, Paul Cercueil <[email protected]> // Copyright (C) 2020, Daniel Silsby <[email protected]> #include "ingenic-drm.h" #include "ingenic-ipu.h" #include <linux/clk.h> #include <linux/component.h> #include <linux/gcd.h> #include <linux/interrupt.h> #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/time.h> #include <drm/drm_atomic.h> #include <drm/drm_atomic_helper.h> #include <drm/drm_damage_helper.h> #include <drm/drm_drv.h> #include <drm/drm_fb_dma_helper.h> #include <drm/drm_fourcc.h> #include <drm/drm_framebuffer.h> #include <drm/drm_gem_atomic_helper.h> #include <drm/drm_gem_dma_helper.h> #include <drm/drm_gem_framebuffer_helper.h> #include <drm/drm_plane.h> #include <drm/drm_property.h> #include <drm/drm_vblank.h> struct ingenic_ipu; struct soc_info { … }; struct ingenic_ipu_private_state { … }; struct ingenic_ipu { … }; /* Signed 15.16 fixed-point math (for bicubic scaling coefficients) */ #define I2F(i) … #define F2I(f) … #define FMUL(fa, fb) … #define SHARPNESS_INCR … static inline struct ingenic_ipu *plane_to_ingenic_ipu(struct drm_plane *plane) { … } static inline struct ingenic_ipu_private_state * to_ingenic_ipu_priv_state(struct drm_private_state *state) { … } static struct ingenic_ipu_private_state * ingenic_ipu_get_priv_state(struct ingenic_ipu *priv, struct drm_atomic_state *state) { … } static struct ingenic_ipu_private_state * ingenic_ipu_get_new_priv_state(struct ingenic_ipu *priv, struct drm_atomic_state *state) { … } /* * Apply conventional cubic convolution kernel. Both parameters * and return value are 15.16 signed fixed-point. * * @f_a: Sharpness factor, typically in range [-4.0, -0.25]. * A larger magnitude increases perceived sharpness, but going past * -2.0 might cause ringing artifacts to outweigh any improvement. * Nice values on a 320x240 LCD are between -0.75 and -2.0. * * @f_x: Absolute distance in pixels from 'pixel 0' sample position * along horizontal (or vertical) source axis. Range is [0, +2.0]. * * returns: Weight of this pixel within 4-pixel sample group. Range is * [-2.0, +2.0]. For moderate (i.e. > -3.0) sharpness factors, * range is within [-1.0, +1.0]. */ static inline s32 cubic_conv(s32 f_a, s32 f_x) { … } /* * On entry, "weight" is a coefficient suitable for bilinear mode, * which is converted to a set of four suitable for bicubic mode. * * "weight 512" means all of pixel 0; * "weight 256" means half of pixel 0 and half of pixel 1; * "weight 0" means all of pixel 1; * * "offset" is increment to next source pixel sample location. */ static void jz4760_set_coefs(struct ingenic_ipu *ipu, unsigned int reg, unsigned int sharpness, bool downscale, unsigned int weight, unsigned int offset) { … } static void jz4725b_set_coefs(struct ingenic_ipu *ipu, unsigned int reg, unsigned int sharpness, bool downscale, unsigned int weight, unsigned int offset) { … } static void ingenic_ipu_set_downscale_coefs(struct ingenic_ipu *ipu, unsigned int reg, unsigned int num, unsigned int denom) { … } static void ingenic_ipu_set_integer_upscale_coefs(struct ingenic_ipu *ipu, unsigned int reg, unsigned int num) { … } static void ingenic_ipu_set_upscale_coefs(struct ingenic_ipu *ipu, unsigned int reg, unsigned int num, unsigned int denom) { … } static void ingenic_ipu_set_coefs(struct ingenic_ipu *ipu, unsigned int reg, unsigned int num, unsigned int denom) { … } static int reduce_fraction(unsigned int *num, unsigned int *denom) { … } static inline bool osd_changed(struct drm_plane_state *state, struct drm_plane_state *oldstate) { … } static void ingenic_ipu_plane_atomic_update(struct drm_plane *plane, struct drm_atomic_state *state) { … } static int ingenic_ipu_plane_atomic_check(struct drm_plane *plane, struct drm_atomic_state *state) { … } static void ingenic_ipu_plane_atomic_disable(struct drm_plane *plane, struct drm_atomic_state *state) { … } static const struct drm_plane_helper_funcs ingenic_ipu_plane_helper_funcs = …; static int ingenic_ipu_plane_atomic_get_property(struct drm_plane *plane, const struct drm_plane_state *state, struct drm_property *property, u64 *val) { … } static int ingenic_ipu_plane_atomic_set_property(struct drm_plane *plane, struct drm_plane_state *state, struct drm_property *property, u64 val) { … } static const struct drm_plane_funcs ingenic_ipu_plane_funcs = …; static struct drm_private_state * ingenic_ipu_duplicate_state(struct drm_private_obj *obj) { … } static void ingenic_ipu_destroy_state(struct drm_private_obj *obj, struct drm_private_state *state) { … } static const struct drm_private_state_funcs ingenic_ipu_private_state_funcs = …; static irqreturn_t ingenic_ipu_irq_handler(int irq, void *arg) { … } static const struct regmap_config ingenic_ipu_regmap_config = …; static int ingenic_ipu_bind(struct device *dev, struct device *master, void *d) { … } static void ingenic_ipu_unbind(struct device *dev, struct device *master, void *d) { … } static const struct component_ops ingenic_ipu_ops = …; static int ingenic_ipu_probe(struct platform_device *pdev) { … } static void ingenic_ipu_remove(struct platform_device *pdev) { … } static const u32 jz4725b_ipu_formats[] = …; static const struct soc_info jz4725b_soc_info = …; static const u32 jz4760_ipu_formats[] = …; static const struct soc_info jz4760_soc_info = …; static const struct of_device_id ingenic_ipu_of_match[] = …; MODULE_DEVICE_TABLE(of, ingenic_ipu_of_match); static struct platform_driver ingenic_ipu_driver = …; struct platform_driver *ingenic_ipu_driver_ptr = …;
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