SSD0323 vertical incrememnt mode.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3696 c046a42c-6fe2-441c-8c8c-71466251a162
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hw/ssd0323.c
24
hw/ssd0323.c
@ -30,6 +30,12 @@ do { fprintf(stderr, "ssd0323: error: " fmt , ##args);} while (0)
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/* Scaling factor for pixels. */
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#define MAGNIFY 4
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#define REMAP_SWAP_COLUMN 0x01
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#define REMAP_SWAP_NYBBLE 0x02
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#define REMAP_VERTICAL 0x04
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#define REMAP_SWAP_COM 0x10
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#define REMAP_SPLIT_COM 0x40
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enum ssd0323_mode
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{
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SSD0323_CMD,
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@ -49,6 +55,7 @@ typedef struct {
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int col_start;
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int col_end;
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int redraw;
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int remap;
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enum ssd0323_mode mode;
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uint8_t framebuffer[128 * 80 / 2];
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} ssd0323_state;
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@ -60,6 +67,16 @@ int ssd0323_xfer_ssi(void *opaque, int data)
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case SSD0323_DATA:
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DPRINTF("data 0x%02x\n", data);
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s->framebuffer[s->col + s->row * 64] = data;
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if (s->remap & REMAP_VERTICAL) {
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s->row++;
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if (s->row > s->row_end) {
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s->row = s->row_start;
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s->col++;
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}
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if (s->col > s->col_end) {
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s->col = s->col_start;
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}
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} else {
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s->col++;
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if (s->col > s->col_end) {
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s->row++;
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@ -68,6 +85,7 @@ int ssd0323_xfer_ssi(void *opaque, int data)
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if (s->row > s->row_end) {
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s->row = s->row_start;
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}
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}
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s->redraw = 1;
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break;
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case SSD0323_CMD:
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@ -82,12 +100,12 @@ int ssd0323_xfer_ssi(void *opaque, int data)
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#define DATA(x) if (s->cmd_len <= (x)) return 0
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case 0x15: /* Set column. */
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DATA(2);
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s->col_start = s->cmd_data[0] % 64;
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s->col = s->col_start = s->cmd_data[0] % 64;
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s->col_end = s->cmd_data[1] % 64;
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break;
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case 0x75: /* Set row. */
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DATA(2);
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s->row_start = s->cmd_data[0] % 80;
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s->row = s->row_start = s->cmd_data[0] % 80;
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s->row_end = s->cmd_data[1] % 80;
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break;
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case 0x81: /* Set contrast */
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@ -99,6 +117,7 @@ int ssd0323_xfer_ssi(void *opaque, int data)
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case 0xa0: /* Set remapping. */
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/* FIXME: Implement this. */
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DATA(1);
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s->remap = s->cmd_data[0];
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break;
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case 0xa1: /* Set display start line. */
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case 0xa2: /* Set display offset. */
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@ -207,6 +226,7 @@ static void ssd0323_update_display(void *opaque)
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}
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p += dest_width;
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}
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/* TODO: Implement row/column remapping. */
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dest = s->ds->data;
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for (y = 0; y < 64; y++) {
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line = y;
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