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#include "u.h"
#include "../port/lib.h"
#include "mem.h"
#include "dat.h"
#include "fns.h"
#include "io.h"
/* power gating controller registers */
enum {
GPC_PGC_CPU_0_1_MAPPING = 0xEC/4,
GPC_PGC_PU_PGC_SW_PUP_REQ = 0xF8/4,
GPC_PGC_PU_PGC_SW_PDN_REQ = 0x104/4,
};
static u32int *gpc = (u32int*)(VIRTIO + 0x3A0000);
typedef struct Tab Tab;
struct Tab {
char *dom;
uint mask;
};
static Tab pu_tab[] = {
"mipi", 1<<0,
"pcie", 1<<1,
"usb_otg1", 1<<2,
"usb_otg2", 1<<3,
"ddr1", 1<<5,
"ddr2", 1<<6,
"gpu", 1<<7,
"vpu", 1<<8,
"hdmi", 1<<9,
"disp", 1<<10,
"mipi_csi1", 1<<11,
"mipi_csi2", 1<<12,
"pcie2", 1<<13,
nil,
};
void
powerup(char *dom)
{
Tab *t;
if(dom == nil)
return;
for(t = pu_tab; t->dom != nil; t++)
if(cistrcmp(dom, t->dom) == 0)
goto Found;
panic("powerup: domain %s not defined", dom);
Found:
gpc[GPC_PGC_CPU_0_1_MAPPING] = 0x0000FFFF;
gpc[GPC_PGC_PU_PGC_SW_PUP_REQ] |= t->mask;
while(gpc[GPC_PGC_PU_PGC_SW_PUP_REQ] & t->mask)
;
gpc[GPC_PGC_CPU_0_1_MAPPING] = 0;
}
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