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/Linux-v5.10/Documentation/devicetree/bindings/display/
Dingenic,ipu.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/display/ingenic,ipu.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Ingenic SoCs Image Processing Unit (IPU) devicetree bindings
10 - Paul Cercueil <paul@crapouillou.net>
15 - enum:
16 - ingenic,jz4725b-ipu
17 - ingenic,jz4760-ipu
18 - items:
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/Linux-v5.10/drivers/gpu/drm/ingenic/
Dingenic-ipu.c1 // SPDX-License-Identifier: GPL-2.0
3 // Ingenic JZ47xx IPU driver
8 #include "ingenic-drm.h"
9 #include "ingenic-ipu.h"
40 void (*set_coefs)(struct ingenic_ipu *ipu, unsigned int reg,
62 /* Signed 15.16 fixed-point math (for bicubic scaling coefficients) */
66 #define SHARPNESS_INCR (I2F(-1) / 8)
75 * and return value are 15.16 signed fixed-point.
77 * @f_a: Sharpness factor, typically in range [-4.0, -0.25].
79 * -2.0 might cause ringing artifacts to outweigh any improvement.
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