Commit 391acbc6 authored by Manikandan Muralidharan's avatar Manikandan Muralidharan Committed by Sam Ravnborg
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drm: atmel-hlcdc: add vertical and horizontal scaling support for XLCDC 



Update the vertical and horizontal scaler registers of XLCDC IP
with Bilinear and Bicubic co-efficients taps for Chroma and
Luma componenets of the Pixel.

Signed-off-by: default avatarManikandan Muralidharan <manikandan.m@microchip.com>
Acked-by: default avatarSam Ravnborg <sam@ravnborg.org>
Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240424053351.589830-7-manikandan.m@microchip.com
parent 0af86604

drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h

+4 −0
Original line number Diff line number Diff line
@@ -198,6 +198,8 @@ 
 * @disc_pos: discard area position register

 * @disc_size: discard area size register

 * @csc: color space conversion register

 * @vxs_config: vertical scalar filter taps control register

 * @hxs_config: horizontal scalar filter taps control register

 */

struct atmel_hlcdc_layer_cfg_layout {

	int xstride[ATMEL_HLCDC_LAYER_MAX_PLANES];
@@ -217,6 +219,8 @@ struct atmel_hlcdc_layer_cfg_layout { 
	int disc_pos;

	int disc_size;

	int csc;

	int vxs_config;

	int hxs_config;

};



/**

drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c

+20 −0
Original line number Diff line number Diff line
@@ -966,6 +966,26 @@ static void atmel_xlcdc_csc_init(struct atmel_hlcdc_plane *plane, 
					    desc->layout.csc + i,

					    xlcdc_csc_coeffs[i]);

	}



	if (desc->layout.vxs_config && desc->layout.hxs_config) {

		/*

		 * Updating vxs.config and hxs.config fixes the

		 * Green Color Issue in SAM9X7 EGT Video Player App

		 */

		atmel_hlcdc_layer_write_cfg(&plane->layer,

					    desc->layout.vxs_config,

					    ATMEL_XLCDC_LAYER_VXSYCFG_ONE |

					    ATMEL_XLCDC_LAYER_VXSYTAP2_ENABLE |

					    ATMEL_XLCDC_LAYER_VXSCCFG_ONE |

					    ATMEL_XLCDC_LAYER_VXSCTAP2_ENABLE);



		atmel_hlcdc_layer_write_cfg(&plane->layer,

					    desc->layout.hxs_config,

					    ATMEL_XLCDC_LAYER_HXSYCFG_ONE |

					    ATMEL_XLCDC_LAYER_HXSYTAP2_ENABLE |

					    ATMEL_XLCDC_LAYER_HXSCCFG_ONE |

					    ATMEL_XLCDC_LAYER_HXSCTAP2_ENABLE);

	}

}



static int atmel_hlcdc_plane_init_properties(struct atmel_hlcdc_plane *plane)