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intelfb: add p divisor increments for i9xx.

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Signed-off-by: Dave Airlie <airlied@linux.ie>
This commit is contained in:
Dave Airlie 2006-03-20 21:22:09 +11:00
parent 8492f081e5
commit 16109b3f4c
1 changed files with 7 additions and 6 deletions
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13
drivers/video/intelfb/intelfbhw.c
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@ -49,6 +49,7 @@ struct pll_min_max {
int min_p1, max_p1; int min_p1, max_p1;
int min_vco_freq, max_vco_freq; int min_vco_freq, max_vco_freq;
int p_transition_clock; int p_transition_clock;
int p_inc_lo, p_inc_hi;
}; };
#define PLLS_I8xx 0 #define PLLS_I8xx 0
@ -56,8 +57,8 @@ struct pll_min_max {
#define PLLS_MAX 2 #define PLLS_MAX 2
struct pll_min_max plls[PLLS_MAX] = { struct pll_min_max plls[PLLS_MAX] = {
{ 108, 140, 18, 26, 6, 16, 3, 16, 4, 128, 0, 31, 930000, 1400000, 165000 }, //I8xx { 108, 140, 18, 26, 6, 16, 3, 16, 4, 128, 0, 31, 930000, 1400000, 165000, 4, 22 }, //I8xx
{ 75, 120, 10, 20, 5, 9, 4, 7, 5, 80, 1, 8, 930000, 2800000, 200000 } //I9xx { 75, 120, 10, 20, 5, 9, 4, 7, 5, 80, 1, 8, 930000, 2800000, 200000, 10, 5 } //I9xx
}; };
int int
@ -822,15 +823,15 @@ calc_pll_params(int index, int clock, u32 *retm1, u32 *retm2, u32 *retn, u32 *re
div_min = ROUND_UP_TO(plls[index].min_vco_freq, clock) / clock; div_min = ROUND_UP_TO(plls[index].min_vco_freq, clock) / clock;
if (clock <= plls[index].p_transition_clock) if (clock <= plls[index].p_transition_clock)
p_inc = 4; p_inc = plls[index].p_inc_lo;
else else
p_inc = 2; p_inc = plls[index].p_inc_hi;
p_min = ROUND_UP_TO(div_min, p_inc); p_min = ROUND_UP_TO(div_min, p_inc);
p_max = ROUND_DOWN_TO(div_max, p_inc); p_max = ROUND_DOWN_TO(div_max, p_inc);
if (p_min < plls[index].min_p) if (p_min < plls[index].min_p)
p_min = 4; p_min = plls[index].min_p;
if (p_max > plls[index].max_p) if (p_max > plls[index].max_p)
p_max = 128; p_max = plls[index].max_p;
DBG_MSG("p range is %d-%d (%d)\n", p_min, p_max, p_inc); DBG_MSG("p range is %d-%d (%d)\n", p_min, p_max, p_inc);