Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /* Linux driver for Philips webcam
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)    Various miscellaneous functions and tables.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)    (C) 1999-2003 Nemosoft Unv.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)    (C) 2004-2006 Luc Saillard (luc@saillard.org)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)    NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)    driver and thus may have bugs that are not present in the original version.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)    Please send bug reports and support requests to <luc@saillard.org>.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)    The decompression routines have been implemented by reverse-engineering the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)    Nemosoft binary pwcx module. Caveat emptor.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include "pwc.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) const int pwc_image_sizes[PSZ_MAX][2] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	{ 128,  96 }, /* sqcif */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	{ 160, 120 }, /* qsif */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	{ 176, 144 }, /* qcif */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	{ 320, 240 }, /* sif */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	{ 352, 288 }, /* cif */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	{ 640, 480 }, /* vga */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) /* x,y -> PSZ_ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) int pwc_get_size(struct pwc_device *pdev, int width, int height)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	/* Find the largest size supported by the camera that fits into the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	   requested size. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	for (i = PSZ_MAX - 1; i >= 0; i--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 		if (!(pdev->image_mask & (1 << i)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 		if (pwc_image_sizes[i][0] <= width &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 		    pwc_image_sizes[i][1] <= height)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 			return i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	/* No mode found, return the smallest mode we have */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	for (i = 0; i < PSZ_MAX; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 		if (pdev->image_mask & (1 << i))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 			return i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	/* Never reached there always is at least one supported mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) /* initialize variables depending on type and decompressor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) void pwc_construct(struct pwc_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 	if (DEVICE_USE_CODEC1(pdev->type)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 		pdev->image_mask = 1 << PSZ_SQCIF | 1 << PSZ_QCIF | 1 << PSZ_CIF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 		pdev->vcinterface = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 		pdev->vendpoint = 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 		pdev->frame_header_size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 		pdev->frame_trailer_size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 	} else if (DEVICE_USE_CODEC3(pdev->type)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 		pdev->image_mask = 1 << PSZ_QSIF | 1 << PSZ_SIF | 1 << PSZ_VGA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 		pdev->vcinterface = 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 		pdev->vendpoint = 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 		pdev->frame_header_size = TOUCAM_HEADER_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 		pdev->frame_trailer_size = TOUCAM_TRAILER_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 	} else /* if (DEVICE_USE_CODEC2(pdev->type)) */ {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) 		pdev->image_mask = 1 << PSZ_SQCIF | 1 << PSZ_QSIF | 1 << PSZ_QCIF | 1 << PSZ_SIF | 1 << PSZ_CIF | 1 << PSZ_VGA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) 		pdev->vcinterface = 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 		pdev->vendpoint = 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) 		pdev->frame_header_size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) 		pdev->frame_trailer_size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) }