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Commit f835f386 authored by Steve Longerbeam's avatar Steve Longerbeam Committed by Philipp Zabel
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gpu: ipu-v3: Add rotation mode conversion utilities 



Add two functions:

- ipu_degrees_to_rot_mode(): converts a degrees, hflip, and vflip setting
  to an IPU rotation mode.
- ipu_rot_mode_to_degrees(): converts an IPU rotation mode with given hflip
  and vflip settings to degrees.

Signed-off-by: default avatarSteve Longerbeam <steve_longerbeam@mentor.com>
Signed-off-by: default avatarPhilipp Zabel <p.zabel@pengutronix.de>
parent ae0e9708

drivers/gpu/ipu-v3/ipu-common.c

+64 −0
Original line number Diff line number Diff line
@@ -114,6 +114,70 @@ enum ipu_color_space ipu_mbus_code_to_colorspace(u32 mbus_code) 
}

EXPORT_SYMBOL_GPL(ipu_mbus_code_to_colorspace);



int ipu_degrees_to_rot_mode(enum ipu_rotate_mode *mode, int degrees,

			    bool hflip, bool vflip)

{

	u32 r90, vf, hf;



	switch (degrees) {

	case 0:

		vf = hf = r90 = 0;

		break;

	case 90:

		vf = hf = 0;

		r90 = 1;

		break;

	case 180:

		vf = hf = 1;

		r90 = 0;

		break;

	case 270:

		vf = hf = r90 = 1;

		break;

	default:

		return -EINVAL;

	}



	hf ^= (u32)hflip;

	vf ^= (u32)vflip;



	*mode = (enum ipu_rotate_mode)((r90 << 2) | (hf << 1) | vf);

	return 0;

}

EXPORT_SYMBOL_GPL(ipu_degrees_to_rot_mode);



int ipu_rot_mode_to_degrees(int *degrees, enum ipu_rotate_mode mode,

			    bool hflip, bool vflip)

{

	u32 r90, vf, hf;



	r90 = ((u32)mode >> 2) & 0x1;

	hf = ((u32)mode >> 1) & 0x1;

	vf = ((u32)mode >> 0) & 0x1;

	hf ^= (u32)hflip;

	vf ^= (u32)vflip;



	switch ((enum ipu_rotate_mode)((r90 << 2) | (hf << 1) | vf)) {

	case IPU_ROTATE_NONE:

		*degrees = 0;

		break;

	case IPU_ROTATE_90_RIGHT:

		*degrees = 90;

		break;

	case IPU_ROTATE_180:

		*degrees = 180;

		break;

	case IPU_ROTATE_90_LEFT:

		*degrees = 270;

		break;

	default:

		return -EINVAL;

	}



	return 0;

}

EXPORT_SYMBOL_GPL(ipu_rot_mode_to_degrees);



struct ipuv3_channel *ipu_idmac_get(struct ipu_soc *ipu, unsigned num)

{

	struct ipuv3_channel *channel;

include/video/imx-ipu-v3.h

+4 −0
Original line number Diff line number Diff line
@@ -301,6 +301,10 @@ int ipu_smfc_set_watermark(struct ipu_smfc *smfc, u32 set_level, u32 clr_level); 
enum ipu_color_space ipu_drm_fourcc_to_colorspace(u32 drm_fourcc);

enum ipu_color_space ipu_pixelformat_to_colorspace(u32 pixelformat);

enum ipu_color_space ipu_mbus_code_to_colorspace(u32 mbus_code);

int ipu_degrees_to_rot_mode(enum ipu_rotate_mode *mode, int degrees,

			    bool hflip, bool vflip);

int ipu_rot_mode_to_degrees(int *degrees, enum ipu_rotate_mode mode,

			    bool hflip, bool vflip);



struct ipu_client_platformdata {

	int csi;