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Commit faa60c41 authored by Chris Wilson's avatar Chris Wilson
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drm/i915: Contract the magic IPS constants into a direct LUT 

... and no need to perform a linear search for the index.
Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
parent c64f7ba5
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Showing with 144 additions and 160 deletions
drivers/gpu/drm/i915/i915_dma.c
View file @ faa60c41
......@@ -1396,152 +1396,12 @@ static void i915_ironlake_get_mem_freq(struct drm_device *dev)
}
}
struct v_table {
u8 vid;
unsigned long vd; /* in .1 mil */
unsigned long vm; /* in .1 mil */
u8 pvid;
};
static struct v_table v_table[] = {
{ 0, 16125, 15000, 0x7f, },
{ 1, 16000, 14875, 0x7e, },
{ 2, 15875, 14750, 0x7d, },
{ 3, 15750, 14625, 0x7c, },
{ 4, 15625, 14500, 0x7b, },
{ 5, 15500, 14375, 0x7a, },
{ 6, 15375, 14250, 0x79, },
{ 7, 15250, 14125, 0x78, },
{ 8, 15125, 14000, 0x77, },
{ 9, 15000, 13875, 0x76, },
{ 10, 14875, 13750, 0x75, },
{ 11, 14750, 13625, 0x74, },
{ 12, 14625, 13500, 0x73, },
{ 13, 14500, 13375, 0x72, },
{ 14, 14375, 13250, 0x71, },
{ 15, 14250, 13125, 0x70, },
{ 16, 14125, 13000, 0x6f, },
{ 17, 14000, 12875, 0x6e, },
{ 18, 13875, 12750, 0x6d, },
{ 19, 13750, 12625, 0x6c, },
{ 20, 13625, 12500, 0x6b, },
{ 21, 13500, 12375, 0x6a, },
{ 22, 13375, 12250, 0x69, },
{ 23, 13250, 12125, 0x68, },
{ 24, 13125, 12000, 0x67, },
{ 25, 13000, 11875, 0x66, },
{ 26, 12875, 11750, 0x65, },
{ 27, 12750, 11625, 0x64, },
{ 28, 12625, 11500, 0x63, },
{ 29, 12500, 11375, 0x62, },
{ 30, 12375, 11250, 0x61, },
{ 31, 12250, 11125, 0x60, },
{ 32, 12125, 11000, 0x5f, },
{ 33, 12000, 10875, 0x5e, },
{ 34, 11875, 10750, 0x5d, },
{ 35, 11750, 10625, 0x5c, },
{ 36, 11625, 10500, 0x5b, },
{ 37, 11500, 10375, 0x5a, },
{ 38, 11375, 10250, 0x59, },
{ 39, 11250, 10125, 0x58, },
{ 40, 11125, 10000, 0x57, },
{ 41, 11000, 9875, 0x56, },
{ 42, 10875, 9750, 0x55, },
{ 43, 10750, 9625, 0x54, },
{ 44, 10625, 9500, 0x53, },
{ 45, 10500, 9375, 0x52, },
{ 46, 10375, 9250, 0x51, },
{ 47, 10250, 9125, 0x50, },
{ 48, 10125, 9000, 0x4f, },
{ 49, 10000, 8875, 0x4e, },
{ 50, 9875, 8750, 0x4d, },
{ 51, 9750, 8625, 0x4c, },
{ 52, 9625, 8500, 0x4b, },
{ 53, 9500, 8375, 0x4a, },
{ 54, 9375, 8250, 0x49, },
{ 55, 9250, 8125, 0x48, },
{ 56, 9125, 8000, 0x47, },
{ 57, 9000, 7875, 0x46, },
{ 58, 8875, 7750, 0x45, },
{ 59, 8750, 7625, 0x44, },
{ 60, 8625, 7500, 0x43, },
{ 61, 8500, 7375, 0x42, },
{ 62, 8375, 7250, 0x41, },
{ 63, 8250, 7125, 0x40, },
{ 64, 8125, 7000, 0x3f, },
{ 65, 8000, 6875, 0x3e, },
{ 66, 7875, 6750, 0x3d, },
{ 67, 7750, 6625, 0x3c, },
{ 68, 7625, 6500, 0x3b, },
{ 69, 7500, 6375, 0x3a, },
{ 70, 7375, 6250, 0x39, },
{ 71, 7250, 6125, 0x38, },
{ 72, 7125, 6000, 0x37, },
{ 73, 7000, 5875, 0x36, },
{ 74, 6875, 5750, 0x35, },
{ 75, 6750, 5625, 0x34, },
{ 76, 6625, 5500, 0x33, },
{ 77, 6500, 5375, 0x32, },
{ 78, 6375, 5250, 0x31, },
{ 79, 6250, 5125, 0x30, },
{ 80, 6125, 5000, 0x2f, },
{ 81, 6000, 4875, 0x2e, },
{ 82, 5875, 4750, 0x2d, },
{ 83, 5750, 4625, 0x2c, },
{ 84, 5625, 4500, 0x2b, },
{ 85, 5500, 4375, 0x2a, },
{ 86, 5375, 4250, 0x29, },
{ 87, 5250, 4125, 0x28, },
{ 88, 5125, 4000, 0x27, },
{ 89, 5000, 3875, 0x26, },
{ 90, 4875, 3750, 0x25, },
{ 91, 4750, 3625, 0x24, },
{ 92, 4625, 3500, 0x23, },
{ 93, 4500, 3375, 0x22, },
{ 94, 4375, 3250, 0x21, },
{ 95, 4250, 3125, 0x20, },
{ 96, 4125, 3000, 0x1f, },
{ 97, 4125, 3000, 0x1e, },
{ 98, 4125, 3000, 0x1d, },
{ 99, 4125, 3000, 0x1c, },
{ 100, 4125, 3000, 0x1b, },
{ 101, 4125, 3000, 0x1a, },
{ 102, 4125, 3000, 0x19, },
{ 103, 4125, 3000, 0x18, },
{ 104, 4125, 3000, 0x17, },
{ 105, 4125, 3000, 0x16, },
{ 106, 4125, 3000, 0x15, },
{ 107, 4125, 3000, 0x14, },
{ 108, 4125, 3000, 0x13, },
{ 109, 4125, 3000, 0x12, },
{ 110, 4125, 3000, 0x11, },
{ 111, 4125, 3000, 0x10, },
{ 112, 4125, 3000, 0x0f, },
{ 113, 4125, 3000, 0x0e, },
{ 114, 4125, 3000, 0x0d, },
{ 115, 4125, 3000, 0x0c, },
{ 116, 4125, 3000, 0x0b, },
{ 117, 4125, 3000, 0x0a, },
{ 118, 4125, 3000, 0x09, },
{ 119, 4125, 3000, 0x08, },
{ 120, 1125, 0, 0x07, },
{ 121, 1000, 0, 0x06, },
{ 122, 875, 0, 0x05, },
{ 123, 750, 0, 0x04, },
{ 124, 625, 0, 0x03, },
{ 125, 500, 0, 0x02, },
{ 126, 375, 0, 0x01, },
{ 127, 0, 0, 0x00, },
};
struct cparams {
int i;
int t;
int m;
int c;
};
static struct cparams cparams[] = {
static const struct cparams {
u16 i;
u16 t;
u16 m;
u16 c;
} cparams[] = {
{ 1, 1333, 301, 28664 },
{ 1, 1066, 294, 24460 },
{ 1, 800, 294, 25192 },
......@@ -1607,21 +1467,145 @@ unsigned long i915_mch_val(struct drm_i915_private *dev_priv)
return ((m * x) / 127) - b;
}
static unsigned long pvid_to_extvid(struct drm_i915_private *dev_priv, u8 pxvid)
static u16 pvid_to_extvid(struct drm_i915_private *dev_priv, u8 pxvid)
{
unsigned long val = 0;
int i;
for (i = 0; i < ARRAY_SIZE(v_table); i++) {
if (v_table[i].pvid == pxvid) {
if (IS_MOBILE(dev_priv->dev))
val = v_table[i].vm;
else
val = v_table[i].vd;
}
}
return val;
static const struct v_table {
u16 vd; /* in .1 mil */
u16 vm; /* in .1 mil */
} v_table[] = {
{ 0, 0, },
{ 375, 0, },
{ 500, 0, },
{ 625, 0, },
{ 750, 0, },
{ 875, 0, },
{ 1000, 0, },
{ 1125, 0, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4250, 3125, },
{ 4375, 3250, },
{ 4500, 3375, },
{ 4625, 3500, },
{ 4750, 3625, },
{ 4875, 3750, },
{ 5000, 3875, },
{ 5125, 4000, },
{ 5250, 4125, },
{ 5375, 4250, },
{ 5500, 4375, },
{ 5625, 4500, },
{ 5750, 4625, },
{ 5875, 4750, },
{ 6000, 4875, },
{ 6125, 5000, },
{ 6250, 5125, },
{ 6375, 5250, },
{ 6500, 5375, },
{ 6625, 5500, },
{ 6750, 5625, },
{ 6875, 5750, },
{ 7000, 5875, },
{ 7125, 6000, },
{ 7250, 6125, },
{ 7375, 6250, },
{ 7500, 6375, },
{ 7625, 6500, },
{ 7750, 6625, },
{ 7875, 6750, },
{ 8000, 6875, },
{ 8125, 7000, },
{ 8250, 7125, },
{ 8375, 7250, },
{ 8500, 7375, },
{ 8625, 7500, },
{ 8750, 7625, },
{ 8875, 7750, },
{ 9000, 7875, },
{ 9125, 8000, },
{ 9250, 8125, },
{ 9375, 8250, },
{ 9500, 8375, },
{ 9625, 8500, },
{ 9750, 8625, },
{ 9875, 8750, },
{ 10000, 8875, },
{ 10125, 9000, },
{ 10250, 9125, },
{ 10375, 9250, },
{ 10500, 9375, },
{ 10625, 9500, },
{ 10750, 9625, },
{ 10875, 9750, },
{ 11000, 9875, },
{ 11125, 10000, },
{ 11250, 10125, },
{ 11375, 10250, },
{ 11500, 10375, },
{ 11625, 10500, },
{ 11750, 10625, },
{ 11875, 10750, },
{ 12000, 10875, },
{ 12125, 11000, },
{ 12250, 11125, },
{ 12375, 11250, },
{ 12500, 11375, },
{ 12625, 11500, },
{ 12750, 11625, },
{ 12875, 11750, },
{ 13000, 11875, },
{ 13125, 12000, },
{ 13250, 12125, },
{ 13375, 12250, },
{ 13500, 12375, },
{ 13625, 12500, },
{ 13750, 12625, },
{ 13875, 12750, },
{ 14000, 12875, },
{ 14125, 13000, },
{ 14250, 13125, },
{ 14375, 13250, },
{ 14500, 13375, },
{ 14625, 13500, },
{ 14750, 13625, },
{ 14875, 13750, },
{ 15000, 13875, },
{ 15125, 14000, },
{ 15250, 14125, },
{ 15375, 14250, },
{ 15500, 14375, },
{ 15625, 14500, },
{ 15750, 14625, },
{ 15875, 14750, },
{ 16000, 14875, },
{ 16125, 15000, },
};
if (dev_priv->info->is_mobile)
return v_table[pxvid].vm;
else
return v_table[pxvid].vd;
}
void i915_update_gfx_val(struct drm_i915_private *dev_priv)
......
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