URL https://opencores.org/ocsvn/or1k/or1k/trunk

Subversion Repositories or1k

[/] [or1k/] [branches/] [stable_0_1_x/] [or1ksim/] [peripheral/] [fb.c] - Diff between revs 845 and 846

Rev 845	Rev 846
Line 40...	Line 40...
`/* Write a register */`	`/* Write a register */`
`void fb_write32 (unsigned long addr, unsigned long value)`	`void fb_write32 (unsigned long addr, unsigned long value)`
`{`	`{`
`int a = (addr - config.fb.baseaddr);`	`int a = (addr - config.fb.baseaddr);`
`switch (a) {`	`switch (a) {`
`case FB_CTRL: fb_ctrl = value & 0x00000001; break;`	`case FB_CTRL: fb_ctrl = value; break;`
`case FB_BUFADDR: change_buf_addr (value); break;`	`case FB_BUFADDR: change_buf_addr (value); break;`
`default:`	`default:`
`a -= FB_PAL;`	`a -= FB_PAL;`
`a /= 4;`	`a /= 4;`
`if (a < 0 \|\| a >= 256) {`	`if (a < 0 \|\| a >= 256) {`
Line 59...	Line 59...
`unsigned long fb_read32 (unsigned long addr)`	`unsigned long fb_read32 (unsigned long addr)`
`{`	`{`
`int a = (addr - config.fb.baseaddr);`	`int a = (addr - config.fb.baseaddr);`
`switch (a) {`	`switch (a) {`
`case FB_CTRL:`	`case FB_CTRL:`
`return fb_ctrl \| (fb_in_refresh ? 2 : 0) \| ((fb_refresh_count & 0xff) << 8);`	`return fb_ctrl & ~0xff000000\| (fb_in_refresh ? 0x80000000 : 0) \| ((unsigned long)(fb_refresh_count & 0x7f) << 24);`
`break;`	`break;`
`case FB_BUFADDR: return fb_addr; break;`	`case FB_BUFADDR: return fb_addr; break;`
`default:`	`default:`
`a -= FB_PAL;`	`a -= FB_PAL;`
`a /= 4;`	`a /= 4;`