videomixer: check resolution and frame length
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34e8e8c259
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@ -17,24 +17,60 @@ int dvisamplerX_debug;
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static unsigned int dvisamplerX_framebuffers[FRAMEBUFFER_COUNT][1280*720] __attribute__((aligned(16)));
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static unsigned int dvisamplerX_framebuffers[FRAMEBUFFER_COUNT][1280*720] __attribute__((aligned(16)));
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static int dvisamplerX_fb_slot_indexes[2];
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static int dvisamplerX_fb_slot_indexes[2];
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static int dvisamplerX_next_fb_index;
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static int dvisamplerX_next_fb_index;
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static int dvisamplerX_hres, dvisamplerX_vres;
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void dvisamplerX_isr(void)
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void dvisamplerX_isr(void)
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{
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{
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int fb_index = -1;
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int fb_index = -1;
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int length;
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int expected_length;
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unsigned int address_min, address_max;
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if((dvisamplerX_resdetection_hres_read() != dvisamplerX_hres)
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|| (dvisamplerX_resdetection_vres_read() != dvisamplerX_vres)) {
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/* Dump frames until we get the expected resolution */
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if(dvisamplerX_dma_slot0_status_read() == DVISAMPLER_SLOT_PENDING) {
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dvisamplerX_dma_slot0_address_write((unsigned int)dvisamplerX_framebuffers[dvisamplerX_fb_slot_indexes[0]]);
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dvisamplerX_dma_slot0_status_write(DVISAMPLER_SLOT_LOADED);
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}
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if(dvisamplerX_dma_slot1_status_read() == DVISAMPLER_SLOT_PENDING) {
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dvisamplerX_dma_slot1_address_write((unsigned int)dvisamplerX_framebuffers[dvisamplerX_fb_slot_indexes[1]]);
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dvisamplerX_dma_slot1_status_write(DVISAMPLER_SLOT_LOADED);
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}
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return;
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}
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address_min = (unsigned int)dvisamplerX_framebuffers & 0x0fffffff;
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address_max = address_min + sizeof(dvisamplerX_framebuffers);
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if((dvisamplerX_dma_slot0_status_read() == DVISAMPLER_SLOT_PENDING)
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&& ((dvisamplerX_dma_slot0_address_read() < address_min) || (dvisamplerX_dma_slot0_address_read() >= address_max)))
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printf("dvisamplerX: stray DMA on slot 0\n");
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if((dvisamplerX_dma_slot1_status_read() == DVISAMPLER_SLOT_PENDING)
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&& ((dvisamplerX_dma_slot1_address_read() < address_min) || (dvisamplerX_dma_slot1_address_read() >= address_max)))
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printf("dvisamplerX: stray DMA on slot 1\n");
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expected_length = dvisamplerX_hres*dvisamplerX_vres*4;
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if(dvisamplerX_dma_slot0_status_read() == DVISAMPLER_SLOT_PENDING) {
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if(dvisamplerX_dma_slot0_status_read() == DVISAMPLER_SLOT_PENDING) {
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fb_index = dvisamplerX_fb_slot_indexes[0];
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length = dvisamplerX_dma_slot0_address_read() - ((unsigned int)dvisamplerX_framebuffers[dvisamplerX_fb_slot_indexes[0]] & 0x0fffffff);
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dvisamplerX_fb_slot_indexes[0] = dvisamplerX_next_fb_index;
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if(length == expected_length) {
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dvisamplerX_dma_slot0_address_write((unsigned int)dvisamplerX_framebuffers[dvisamplerX_next_fb_index]);
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fb_index = dvisamplerX_fb_slot_indexes[0];
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dvisamplerX_fb_slot_indexes[0] = dvisamplerX_next_fb_index;
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dvisamplerX_next_fb_index = (dvisamplerX_next_fb_index + 1) & FRAMEBUFFER_MASK;
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} else
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printf("dvisamplerX: slot0: unexpected frame length: %d\n", length);
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dvisamplerX_dma_slot0_address_write((unsigned int)dvisamplerX_framebuffers[dvisamplerX_fb_slot_indexes[0]]);
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dvisamplerX_dma_slot0_status_write(DVISAMPLER_SLOT_LOADED);
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dvisamplerX_dma_slot0_status_write(DVISAMPLER_SLOT_LOADED);
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dvisamplerX_next_fb_index = (dvisamplerX_next_fb_index + 1) & FRAMEBUFFER_MASK;
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}
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}
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if(dvisamplerX_dma_slot1_status_read() == DVISAMPLER_SLOT_PENDING) {
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if(dvisamplerX_dma_slot1_status_read() == DVISAMPLER_SLOT_PENDING) {
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fb_index = dvisamplerX_fb_slot_indexes[1];
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length = dvisamplerX_dma_slot1_address_read() - ((unsigned int)dvisamplerX_framebuffers[dvisamplerX_fb_slot_indexes[1]] & 0x0fffffff);
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dvisamplerX_fb_slot_indexes[1] = dvisamplerX_next_fb_index;
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if(length == expected_length) {
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dvisamplerX_dma_slot1_address_write((unsigned int)dvisamplerX_framebuffers[dvisamplerX_next_fb_index]);
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fb_index = dvisamplerX_fb_slot_indexes[1];
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dvisamplerX_fb_slot_indexes[1] = dvisamplerX_next_fb_index;
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dvisamplerX_next_fb_index = (dvisamplerX_next_fb_index + 1) & FRAMEBUFFER_MASK;
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} else
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printf("dvisamplerX: slot1: unexpected frame length: %d\n", length);
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dvisamplerX_dma_slot1_address_write((unsigned int)dvisamplerX_framebuffers[dvisamplerX_fb_slot_indexes[1]]);
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dvisamplerX_dma_slot1_status_write(DVISAMPLER_SLOT_LOADED);
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dvisamplerX_dma_slot1_status_write(DVISAMPLER_SLOT_LOADED);
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dvisamplerX_next_fb_index = (dvisamplerX_next_fb_index + 1) & FRAMEBUFFER_MASK;
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}
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}
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if(fb_index != -1)
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if(fb_index != -1)
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@ -50,13 +86,15 @@ void dvisamplerX_init_video(int hres, int vres)
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dvisamplerX_clocking_pll_reset_write(1);
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dvisamplerX_clocking_pll_reset_write(1);
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dvisamplerX_connected = dvisamplerX_locked = 0;
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dvisamplerX_connected = dvisamplerX_locked = 0;
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dvisamplerX_hres = hres; dvisamplerX_vres = vres;
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dvisamplerX_dma_ev_pending_write(dvisamplerX_dma_ev_pending_read());
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dvisamplerX_dma_ev_enable_write(0x3);
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mask = irq_getmask();
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mask = irq_getmask();
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mask |= 1 << DVISAMPLERX_INTERRUPT;
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mask &= ~(1 << DVISAMPLERX_INTERRUPT);
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irq_setmask(mask);
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irq_setmask(mask);
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dvisamplerX_dma_slot0_status_write(DVISAMPLER_SLOT_EMPTY);
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dvisamplerX_dma_slot1_status_write(DVISAMPLER_SLOT_EMPTY);
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dvisamplerX_dma_frame_size_write(hres*vres*4);
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dvisamplerX_dma_frame_size_write(hres*vres*4);
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dvisamplerX_fb_slot_indexes[0] = 0;
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dvisamplerX_fb_slot_indexes[0] = 0;
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dvisamplerX_dma_slot0_address_write((unsigned int)dvisamplerX_framebuffers[0]);
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dvisamplerX_dma_slot0_address_write((unsigned int)dvisamplerX_framebuffers[0]);
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@ -66,6 +104,11 @@ void dvisamplerX_init_video(int hres, int vres)
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dvisamplerX_dma_slot1_status_write(DVISAMPLER_SLOT_LOADED);
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dvisamplerX_dma_slot1_status_write(DVISAMPLER_SLOT_LOADED);
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dvisamplerX_next_fb_index = 2;
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dvisamplerX_next_fb_index = 2;
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dvisamplerX_dma_ev_pending_write(dvisamplerX_dma_ev_pending_read());
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dvisamplerX_dma_ev_enable_write(0x3);
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mask |= 1 << DVISAMPLERX_INTERRUPT;
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irq_setmask(mask);
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fb_dmaX_base_write((unsigned int)dvisamplerX_framebuffers[3]);
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fb_dmaX_base_write((unsigned int)dvisamplerX_framebuffers[3]);
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}
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}
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