1 // SPDX-License-Identifier: GPL-2.0-or-later
5  *  Derived from cx25840-vbi.c
11 #include "cx18-driver.h"
14  * For sliced VBI output, we set up to use VIP-1.1, 8-bit mode,
16  * Thus, according to the VIP-2 Spec, our VBI ancillary data lines
24  *	2 byte Internal DID:	  VBI-line-# 0x80
29  * The RP codes for EAVs when in VIP-1.1 mode, not in raw mode, &
30  * in the vertical blanking interval are:
34  * Since the V bit is only allowed to toggle in the EAV RP code, just
121 	struct cx18_av_state *state = &cx->av_state;  in cx18_av_g_sliced_fmt()
129 	int is_pal = !(state->std & V4L2_STD_525_60);  in cx18_av_g_sliced_fmt()
132 	memset(svbi->service_lines, 0, sizeof(svbi->service_lines));  in cx18_av_g_sliced_fmt()
133 	svbi->service_set = 0;  in cx18_av_g_sliced_fmt()
141 			u8 v = cx18_av_read(cx, 0x424 + i - 7);  in cx18_av_g_sliced_fmt()  local
143 			svbi->service_lines[0][i] = lcr2vbi[v >> 4];  in cx18_av_g_sliced_fmt()
144 			svbi->service_lines[1][i] = lcr2vbi[v & 0xf];  in cx18_av_g_sliced_fmt()
145 			svbi->service_set |= svbi->service_lines[0][i] |  in cx18_av_g_sliced_fmt()
146 				svbi->service_lines[1][i];  in cx18_av_g_sliced_fmt()
150 			u8 v = cx18_av_read(cx, 0x424 + i - 10);  in cx18_av_g_sliced_fmt()  local
152 			svbi->service_lines[0][i] = lcr2vbi[v >> 4];  in cx18_av_g_sliced_fmt()
153 			svbi->service_lines[1][i] = lcr2vbi[v & 0xf];  in cx18_av_g_sliced_fmt()
154 			svbi->service_set |= svbi->service_lines[0][i] |  in cx18_av_g_sliced_fmt()
155 				svbi->service_lines[1][i];  in cx18_av_g_sliced_fmt()
164 	struct cx18_av_state *state = &cx->av_state;  in cx18_av_s_raw_fmt()
170 	cx18_av_write(cx, 0x47f, state->slicer_line_delay);  in cx18_av_s_raw_fmt()
178 	struct cx18_av_state *state = &cx->av_state;  in cx18_av_s_sliced_fmt()
179 	int is_pal = !(state->std & V4L2_STD_525_60);  in cx18_av_s_sliced_fmt()
192 	cx18_av_write(cx, 0x47f, state->slicer_line_delay);  in cx18_av_s_sliced_fmt()
197 			svbi->service_lines[0][i] =  in cx18_av_s_sliced_fmt()
198 				svbi->service_lines[1][i] = 0;  in cx18_av_s_sliced_fmt()
201 			svbi->service_lines[0][i] =  in cx18_av_s_sliced_fmt()
202 				svbi->service_lines[1][i] = 0;  in cx18_av_s_sliced_fmt()
205 			svbi->service_lines[0][i] =  in cx18_av_s_sliced_fmt()
206 				svbi->service_lines[1][i] = 0;  in cx18_av_s_sliced_fmt()
212 			switch (svbi->service_lines[1-x][i]) {  in cx18_av_s_sliced_fmt()
249 	struct cx18_av_state *state = &cx->av_state;  in cx18_av_decode_vbi_line()
250 	struct vbi_anc_data *anc = (struct vbi_anc_data *)vbi->p;  in cx18_av_decode_vbi_line()
257 	if (anc->preamble[0] ||  in cx18_av_decode_vbi_line()
258 			anc->preamble[1] != 0xff || anc->preamble[2] != 0xff ||  in cx18_av_decode_vbi_line()
259 			(anc->did != sliced_vbi_did[0] &&  in cx18_av_decode_vbi_line()
260 			 anc->did != sliced_vbi_did[1])) {  in cx18_av_decode_vbi_line()
261 		vbi->line = vbi->type = 0;  in cx18_av_decode_vbi_line()
265 	did = anc->did;  in cx18_av_decode_vbi_line()
266 	sdid = anc->sdid & 0xf;  in cx18_av_decode_vbi_line()
267 	l = anc->idid[0] & 0x3f;  in cx18_av_decode_vbi_line()
268 	l += state->slicer_line_offset;  in cx18_av_decode_vbi_line()
269 	p = anc->payload;  in cx18_av_decode_vbi_line()
294 	vbi->type = err ? 0 : sdid;  in cx18_av_decode_vbi_line()
295 	vbi->line = err ? 0 : l;  in cx18_av_decode_vbi_line()
296 	vbi->is_second_field = err ? 0 : (did == sliced_vbi_did[1]);  in cx18_av_decode_vbi_line()
297 	vbi->p = p;  in cx18_av_decode_vbi_line()