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path: root/drivers/gpu/drm/nouveau/nouveau_i2c.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_i2c.c')
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_i2c.c56
1 files changed, 39 insertions, 17 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_i2c.c b/drivers/gpu/drm/nouveau/nouveau_i2c.c
index cb389d01432..f6a27fabcfe 100644
--- a/drivers/gpu/drm/nouveau/nouveau_i2c.c
+++ b/drivers/gpu/drm/nouveau/nouveau_i2c.c
@@ -107,6 +107,13 @@ nv4e_i2c_getsda(void *data)
return !!((nv_rd32(dev, i2c->rd) >> 16) & 8);
}
+static const uint32_t nv50_i2c_port[] = {
+ 0x00e138, 0x00e150, 0x00e168, 0x00e180,
+ 0x00e254, 0x00e274, 0x00e764, 0x00e780,
+ 0x00e79c, 0x00e7b8
+};
+#define NV50_I2C_PORTS ARRAY_SIZE(nv50_i2c_port)
+
static int
nv50_i2c_getscl(void *data)
{
@@ -130,28 +137,32 @@ static void
nv50_i2c_setscl(void *data, int state)
{
struct nouveau_i2c_chan *i2c = data;
- struct drm_device *dev = i2c->dev;
- nv_wr32(dev, i2c->wr, 4 | (i2c->data ? 2 : 0) | (state ? 1 : 0));
+ nv_wr32(i2c->dev, i2c->wr, 4 | (i2c->data ? 2 : 0) | (state ? 1 : 0));
}
static void
nv50_i2c_setsda(void *data, int state)
{
struct nouveau_i2c_chan *i2c = data;
- struct drm_device *dev = i2c->dev;
- nv_wr32(dev, i2c->wr,
- (nv_rd32(dev, i2c->rd) & 1) | 4 | (state ? 2 : 0));
+ nv_mask(i2c->dev, i2c->wr, 0x00000006, 4 | (state ? 2 : 0));
i2c->data = state;
}
-static const uint32_t nv50_i2c_port[] = {
- 0x00e138, 0x00e150, 0x00e168, 0x00e180,
- 0x00e254, 0x00e274, 0x00e764, 0x00e780,
- 0x00e79c, 0x00e7b8
-};
-#define NV50_I2C_PORTS ARRAY_SIZE(nv50_i2c_port)
+static int
+nvd0_i2c_getscl(void *data)
+{
+ struct nouveau_i2c_chan *i2c = data;
+ return !!(nv_rd32(i2c->dev, i2c->rd) & 0x10);
+}
+
+static int
+nvd0_i2c_getsda(void *data)
+{
+ struct nouveau_i2c_chan *i2c = data;
+ return !!(nv_rd32(i2c->dev, i2c->rd) & 0x20);
+}
int
nouveau_i2c_init(struct drm_device *dev, struct dcb_i2c_entry *entry, int index)
@@ -163,7 +174,8 @@ nouveau_i2c_init(struct drm_device *dev, struct dcb_i2c_entry *entry, int index)
if (entry->chan)
return -EEXIST;
- if (dev_priv->card_type >= NV_50 && entry->read >= NV50_I2C_PORTS) {
+ if (dev_priv->card_type >= NV_50 &&
+ dev_priv->card_type <= NV_C0 && entry->read >= NV50_I2C_PORTS) {
NV_ERROR(dev, "unknown i2c port %d\n", entry->read);
return -EINVAL;
}
@@ -192,10 +204,17 @@ nouveau_i2c_init(struct drm_device *dev, struct dcb_i2c_entry *entry, int index)
case 5:
i2c->bit.setsda = nv50_i2c_setsda;
i2c->bit.setscl = nv50_i2c_setscl;
- i2c->bit.getsda = nv50_i2c_getsda;
- i2c->bit.getscl = nv50_i2c_getscl;
- i2c->rd = nv50_i2c_port[entry->read];
- i2c->wr = i2c->rd;
+ if (dev_priv->card_type < NV_D0) {
+ i2c->bit.getsda = nv50_i2c_getsda;
+ i2c->bit.getscl = nv50_i2c_getscl;
+ i2c->rd = nv50_i2c_port[entry->read];
+ i2c->wr = i2c->rd;
+ } else {
+ i2c->bit.getsda = nvd0_i2c_getsda;
+ i2c->bit.getscl = nvd0_i2c_getscl;
+ i2c->rd = 0x00d014 + (entry->read * 0x20);
+ i2c->wr = i2c->rd;
+ }
break;
case 6:
i2c->rd = entry->read;
@@ -267,7 +286,10 @@ nouveau_i2c_find(struct drm_device *dev, int index)
val = 0xe001;
}
- nv_wr32(dev, reg, (nv_rd32(dev, reg) & ~0xf003) | val);
+ /* nfi, but neither auxch or i2c work if it's 1 */
+ nv_mask(dev, reg + 0x0c, 0x00000001, 0x00000000);
+ /* nfi, but switches auxch vs normal i2c */
+ nv_mask(dev, reg + 0x00, 0x0000f003, val);
}
if (!i2c->chan && nouveau_i2c_init(dev, i2c, index))