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overlay: Baytrail needs a custom GPU frequency parser

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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2014-07-03 11:18:02 +01:00
parent 98165d60be
commit b9c705f4da
2 changed files with 44 additions and 23 deletions
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66
overlay/gpu-freq.c
View File

@ -88,26 +88,39 @@ int gpu_freq_init(struct gpu_freq *gf)
buf[len] = '\0';
s = strstr(buf, "(RPN)");
if (s == NULL)
goto err;
sscanf(s, "(RPN) frequency: %dMHz", &gf->rpn);
if (strstr(buf, "PUNIT_REG_GPU_FREQ_STS")) {
/* Baytrail is special, ofc. */
gf->is_byt = 1;
s = strstr(buf, "max");
if (s == NULL)
goto err;
sscanf(s, "max GPU freq: %d MHz", &gf->max);
sscanf(s, "min GPU freq: %d MHz", &gf->min);
s = strstr(s, "(RP1)");
if (s == NULL)
goto err;
sscanf(s, "(RP1) frequency: %dMHz", &gf->rp1);
gf->rp0 = gf->rp1 = gf->max;
gf->rpn = gf->min;
} else {
s = strstr(buf, "(RPN)");
if (s == NULL)
goto err;
sscanf(s, "(RPN) frequency: %dMHz", &gf->rpn);
s = strstr(s, "(RP0)");
if (s == NULL)
goto err;
sscanf(s, "(RP0) frequency: %dMHz", &gf->rp0);
s = strstr(s, "(RP1)");
if (s == NULL)
goto err;
sscanf(s, "(RP1) frequency: %dMHz", &gf->rp1);
s = strstr(s, "Max");
if (s == NULL)
goto err;
sscanf(s, "Max overclocked frequency: %dMHz", &gf->max);
gf->min = gf->rpn;
s = strstr(s, "(RP0)");
if (s == NULL)
goto err;
sscanf(s, "(RP0) frequency: %dMHz", &gf->rp0);
s = strstr(s, "Max");
if (s == NULL)
goto err;
sscanf(s, "Max overclocked frequency: %dMHz", &gf->max);
gf->min = gf->rpn;
}
return 0;
@ -140,13 +153,20 @@ int gpu_freq_update(struct gpu_freq *gf)
buf[len] = '\0';
s = strstr(buf, "RPNSWREQ:");
if (s)
sscanf(s, "RPNSWREQ: %dMHz", &gf->request);
if (gf->is_byt) {
s = strstr(buf, "current");
if (s)
sscanf(s, "current GPU freq: %d MHz", &gf->current);
gf->request = gf->current;
} else {
s = strstr(buf, "RPNSWREQ:");
if (s)
sscanf(s, "RPNSWREQ: %dMHz", &gf->request);
s = strstr(buf, "CAGF:");
if (s)
sscanf(s, "CAGF: %dMHz", &gf->current);
s = strstr(buf, "CAGF:");
if (s)
sscanf(s, "CAGF: %dMHz", &gf->current);
}
} else {
struct gpu_freq_stat *s = &gf->stat[gf->count++&1];
struct gpu_freq_stat *d = &gf->stat[gf->count&1];

1
overlay/gpu-freq.h
View File

@ -34,6 +34,7 @@ struct gpu_freq {
} stat[2];
int fd;
int count;
int is_byt;
int min, max;
int rpn, rp1, rp0;
int request;