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[media] media: ti-vpe: sc: Fix incorrect optimization 

Current scaler library implementation of sc_set_hs_coeffs and
sc_set_vs_coeffs tries to return immediately if the calculated
coefficient index is already being used.

As the same scaler block is going to be used for all the VPE contexts,
even if the calculated index is same, the parameters have to be
reconfigured for each of the context.

Because of this, when multiple contexts use the same coefficients,
all other contexts would have zero scaling coefficients.
Fix this and also remove the unnecessary hs_index and vs_index fields.

Signed-off-by: Nikhil Devshatwar <nikhil.nd@ti.com>
Signed-off-by: Benoit Parrot <bparrot@ti.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Nikhil Devshatwar 2016-11-18 21:20:33 -02:00 committed by Mauro Carvalho Chehab
parent 3d7e61f6e2
commit bc809bfc17
2 changed files with 0 additions and 12 deletions
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9
drivers/media/platform/ti-vpe/sc.c
View File

@ -84,9 +84,6 @@ void sc_set_hs_coeffs(struct sc_data *sc, void *addr, unsigned int src_w,
}
}
if (idx == sc->hs_index)
return;
cp = scaler_hs_coeffs[idx];
for (i = 0; i < SC_NUM_PHASES * 2; i++) {
@ -101,8 +98,6 @@ void sc_set_hs_coeffs(struct sc_data *sc, void *addr, unsigned int src_w,
coeff_h += SC_NUM_TAPS_MEM_ALIGN - SC_H_NUM_TAPS;
}
sc->hs_index = idx;
sc->load_coeff_h = true;
}
@ -130,9 +125,6 @@ void sc_set_vs_coeffs(struct sc_data *sc, void *addr, unsigned int src_h,
idx = VS_LT_9_16_SCALE + sixteenths - 8;
}
if (idx == sc->vs_index)
return;
cp = scaler_vs_coeffs[idx];
for (i = 0; i < SC_NUM_PHASES * 2; i++) {
@ -146,7 +138,6 @@ void sc_set_vs_coeffs(struct sc_data *sc, void *addr, unsigned int src_h,
coeff_v += SC_NUM_TAPS_MEM_ALIGN - SC_V_NUM_TAPS;
}
sc->vs_index = idx;
sc->load_coeff_v = true;
}

3
drivers/media/platform/ti-vpe/sc.h
View File

@ -189,9 +189,6 @@ struct sc_data {
bool load_coeff_h; /* have new h SC coeffs */
bool load_coeff_v; /* have new v SC coeffs */
unsigned int hs_index; /* h SC coeffs selector */
unsigned int vs_index; /* v SC coeffs selector */
struct platform_device *pdev;
};