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drm/g94/i2c: add aux channel interrupt driver

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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2014-05-13 14:50:25 +10:00
parent 3668a339d6
commit d78fa39a2b
3 changed files with 39 additions and 0 deletions
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33
drivers/gpu/drm/nouveau/core/subdev/i2c/nv94.c
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@ -24,6 +24,36 @@
#include "nv50.h"
void
nv94_aux_stat(struct nouveau_i2c *i2c, u32 *hi, u32 *lo, u32 *rq, u32 *tx)
{
u32 intr = nv_rd32(i2c, 0x00e06c);
u32 stat = nv_rd32(i2c, 0x00e068) & intr, i;
for (i = 0, *hi = *lo = *rq = *tx = 0; i < 8; i++) {
if ((stat & (1 << (i * 4)))) *hi |= 1 << i;
if ((stat & (2 << (i * 4)))) *lo |= 1 << i;
if ((stat & (4 << (i * 4)))) *rq |= 1 << i;
if ((stat & (8 << (i * 4)))) *tx |= 1 << i;
}
nv_wr32(i2c, 0x00e06c, intr);
}
void
nv94_aux_mask(struct nouveau_i2c *i2c, u32 type, u32 mask, u32 data)
{
u32 temp = nv_rd32(i2c, 0x00e068), i;
for (i = 0; i < 8; i++) {
if (mask & (1 << i)) {
if (!(data & (1 << i))) {
temp &= ~(type << (i * 4));
continue;
}
temp |= type << (i * 4);
}
}
nv_wr32(i2c, 0x00e068, temp);
}
#define AUX_DBG(fmt, args...) nv_debug(aux, "AUXCH(%d): " fmt, ch, ##args)
#define AUX_ERR(fmt, args...) nv_error(aux, "AUXCH(%d): " fmt, ch, ##args)
@ -273,4 +303,7 @@ nv94_i2c_oclass = &(struct nouveau_i2c_impl) {
.fini = _nouveau_i2c_fini,
},
.sclass = nv94_i2c_sclass,
.aux = 4,
.aux_stat = nv94_aux_stat,
.aux_mask = nv94_aux_mask,
}.base;

3
drivers/gpu/drm/nouveau/core/subdev/i2c/nvd0.c
View File

@ -106,4 +106,7 @@ nvd0_i2c_oclass = &(struct nouveau_i2c_impl) {
.fini = _nouveau_i2c_fini,
},
.sclass = nvd0_i2c_sclass,
.aux = 4,
.aux_stat = nv94_aux_stat,
.aux_mask = nv94_aux_mask,
}.base;

3
drivers/gpu/drm/nouveau/core/subdev/i2c/priv.h
View File

@ -73,4 +73,7 @@ struct nouveau_i2c_impl {
void (*aux_mask)(struct nouveau_i2c *, u32, u32, u32);
};
void nv94_aux_stat(struct nouveau_i2c *, u32 *, u32 *, u32 *, u32 *);
void nv94_aux_mask(struct nouveau_i2c *, u32, u32, u32);
#endif