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gpu: ipu-v3: ipu-dc: Simplify display controller microcode setup
This cleans up the display controller microcode setup in ipu_dc_init_sync a little bit. The microcode template words for DI0 and DI1 are properly separated to avoid a clash when DI1 is active in interlaced mode at the same time as DI0 in non-interlaced mode. A comment is added to explain the meaning of the sync counter. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This commit is contained in:
parent
1645061679
commit
86bdb09f04
1 changed files with 26 additions and 27 deletions
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@ -171,6 +171,7 @@ int ipu_dc_init_sync(struct ipu_dc *dc, struct ipu_di *di, bool interlaced,
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u32 bus_format, u32 width)
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{
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struct ipu_dc_priv *priv = dc->priv;
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int addr, sync;
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u32 reg = 0;
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int map;
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@ -182,41 +183,39 @@ int ipu_dc_init_sync(struct ipu_dc *dc, struct ipu_di *di, bool interlaced,
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return map;
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}
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/*
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* In interlaced mode we need more counters to create the asymmetric
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* per-field VSYNC signals. The pixel active signal synchronising DC
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* to DI moves to signal generator #6 (see ipu-di.c). In progressive
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* mode counter #5 is used.
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*/
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sync = interlaced ? 6 : 5;
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/* Reserve 5 microcode template words for each DI */
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if (dc->di)
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addr = 5;
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else
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addr = 0;
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if (interlaced) {
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int addr;
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if (dc->di)
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addr = 1;
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else
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addr = 0;
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dc_link_event(dc, DC_EVT_NL, addr, 3);
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dc_link_event(dc, DC_EVT_EOL, addr, 2);
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dc_link_event(dc, DC_EVT_NEW_DATA, addr, 1);
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/* Init template microcode */
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dc_write_tmpl(dc, addr, WROD(0), 0, map, SYNC_WAVE, 0, 6, 1);
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dc_write_tmpl(dc, addr, WROD(0), 0, map, SYNC_WAVE, 0, sync, 1);
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} else {
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if (dc->di) {
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dc_link_event(dc, DC_EVT_NL, 2, 3);
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dc_link_event(dc, DC_EVT_EOL, 3, 2);
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dc_link_event(dc, DC_EVT_NEW_DATA, 1, 1);
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/* Init template microcode */
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dc_write_tmpl(dc, 2, WROD(0), 0, map, SYNC_WAVE, 8, 5, 1);
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dc_write_tmpl(dc, 3, WROD(0), 0, map, SYNC_WAVE, 4, 5, 0);
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dc_write_tmpl(dc, 4, WRG, 0, map, NULL_WAVE, 0, 0, 1);
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dc_write_tmpl(dc, 1, WROD(0), 0, map, SYNC_WAVE, 0, 5, 1);
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} else {
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dc_link_event(dc, DC_EVT_NL, 5, 3);
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dc_link_event(dc, DC_EVT_EOL, 6, 2);
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dc_link_event(dc, DC_EVT_NEW_DATA, 8, 1);
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/* Init template microcode */
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dc_write_tmpl(dc, 5, WROD(0), 0, map, SYNC_WAVE, 8, 5, 1);
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dc_write_tmpl(dc, 6, WROD(0), 0, map, SYNC_WAVE, 4, 5, 0);
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dc_write_tmpl(dc, 7, WRG, 0, map, NULL_WAVE, 0, 0, 1);
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dc_write_tmpl(dc, 8, WROD(0), 0, map, SYNC_WAVE, 0, 5, 1);
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}
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dc_link_event(dc, DC_EVT_NL, addr + 2, 3);
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dc_link_event(dc, DC_EVT_EOL, addr + 3, 2);
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dc_link_event(dc, DC_EVT_NEW_DATA, addr + 1, 1);
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/* Init template microcode */
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dc_write_tmpl(dc, addr + 2, WROD(0), 0, map, SYNC_WAVE, 8, sync, 1);
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dc_write_tmpl(dc, addr + 3, WROD(0), 0, map, SYNC_WAVE, 4, sync, 0);
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dc_write_tmpl(dc, addr + 4, WRG, 0, map, NULL_WAVE, 0, 0, 1);
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dc_write_tmpl(dc, addr + 1, WROD(0), 0, map, SYNC_WAVE, 0, sync, 1);
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}
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dc_link_event(dc, DC_EVT_NF, 0, 0);
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dc_link_event(dc, DC_EVT_NFIELD, 0, 0);
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dc_link_event(dc, DC_EVT_EOF, 0, 0);
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