summaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
authorBen Skeggs <bskeggs@redhat.com>2014-05-13 08:50:25 +0400
committerBen Skeggs <bskeggs@redhat.com>2014-06-11 10:10:25 +0400
commitd78fa39a2b766b680e6c703f52553afc6c532e11 (patch)
treeb95de92c5f4142eace2c048f3ec9163a2baa67e7 /drivers
parent3668a339d6e7d47f777b8ce86bd7ca53451df6bb (diff)
downloadlinux-d78fa39a2b766b680e6c703f52553afc6c532e11.tar.xz
drm/g94/i2c: add aux channel interrupt driver
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/nouveau/core/subdev/i2c/nv94.c33
-rw-r--r--drivers/gpu/drm/nouveau/core/subdev/i2c/nvd0.c3
-rw-r--r--drivers/gpu/drm/nouveau/core/subdev/i2c/priv.h3
3 files changed, 39 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/nv94.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv94.c
index 900f464c716c..ec0bd68a9027 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/i2c/nv94.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv94.c
@@ -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;
diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/nvd0.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/nvd0.c
index 5237906e568f..b0b8047fb2b5 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/i2c/nvd0.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/nvd0.c
@@ -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;
diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/priv.h b/drivers/gpu/drm/nouveau/core/subdev/i2c/priv.h
index 27b9a9717229..a835d9e9ccb5 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/i2c/priv.h
+++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/priv.h
@@ -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