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authorBen Skeggs <bskeggs@redhat.com>2014-06-11 10:28:18 +1000
committerBen Skeggs <bskeggs@redhat.com>2014-06-11 16:10:35 +1000
commit37da5b87ac5abfdb26445cfe24830e15a2dc2758 (patch)
tree44374d5c219aba37eea1443027131468adb3cbb9 /drivers/gpu
parent9efc583ea9a474a8d89421da8aad4a2265f2ac5a (diff)
drm/nouveau/i2c/anx9805: add debugging to aux transactions
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/nouveau/core/subdev/i2c/anx9805.c24
-rw-r--r--drivers/gpu/drm/nouveau/core/subdev/i2c/port.h15
2 files changed, 34 insertions, 5 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/anx9805.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/anx9805.c
index 477f5a0b739..2c2731a6cf9 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/i2c/anx9805.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/anx9805.c
@@ -22,7 +22,7 @@
* Authors: Ben Skeggs <bskeggs@redhat.com>
*/
-#include "priv.h"
+#include "port.h"
struct anx9805_i2c_port {
struct nouveau_i2c_port base;
@@ -37,6 +37,8 @@ anx9805_train(struct nouveau_i2c_port *port, int link_nr, int link_bw, bool enh)
struct nouveau_i2c_port *mast = (void *)nv_object(chan)->parent;
u8 tmp, i;
+ DBG("ANX9805 train %d 0x%02x %d\n", link_nr, link_bw, enh);
+
nv_wri2cr(mast, chan->addr, 0xa0, link_bw);
nv_wri2cr(mast, chan->addr, 0xa1, link_nr | (enh ? 0x80 : 0x00));
nv_wri2cr(mast, chan->addr, 0xa2, 0x01);
@@ -66,16 +68,23 @@ anx9805_aux(struct nouveau_i2c_port *port, bool retry,
struct anx9805_i2c_port *chan = (void *)port;
struct nouveau_i2c_port *mast = (void *)nv_object(chan)->parent;
int i, ret = -ETIMEDOUT;
+ u8 buf[16] = {};
u8 tmp;
+ DBG("%02x %05x %d\n", type, addr, size);
+
tmp = nv_rdi2cr(mast, chan->ctrl, 0x07) & ~0x04;
nv_wri2cr(mast, chan->ctrl, 0x07, tmp | 0x04);
nv_wri2cr(mast, chan->ctrl, 0x07, tmp);
nv_wri2cr(mast, chan->ctrl, 0xf7, 0x01);
nv_wri2cr(mast, chan->addr, 0xe4, 0x80);
- for (i = 0; !(type & 1) && i < size; i++)
- nv_wri2cr(mast, chan->addr, 0xf0 + i, data[i]);
+ if (!(type & 1)) {
+ memcpy(buf, data, size);
+ DBG("%16ph", buf);
+ for (i = 0; i < size; i++)
+ nv_wri2cr(mast, chan->addr, 0xf0 + i, buf[i]);
+ }
nv_wri2cr(mast, chan->addr, 0xe5, ((size - 1) << 4) | type);
nv_wri2cr(mast, chan->addr, 0xe6, (addr & 0x000ff) >> 0);
nv_wri2cr(mast, chan->addr, 0xe7, (addr & 0x0ff00) >> 8);
@@ -94,8 +103,13 @@ anx9805_aux(struct nouveau_i2c_port *port, bool retry,
goto done;
}
- for (i = 0; (type & 1) && i < size; i++)
- data[i] = nv_rdi2cr(mast, chan->addr, 0xf0 + i);
+ if (type & 1) {
+ for (i = 0; i < size; i++)
+ buf[i] = nv_rdi2cr(mast, chan->addr, 0xf0 + i);
+ DBG("%16ph", buf);
+ memcpy(data, buf, size);
+ }
+
ret = 0;
done:
nv_wri2cr(mast, chan->ctrl, 0xf7, 0x01);
diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/port.h b/drivers/gpu/drm/nouveau/core/subdev/i2c/port.h
new file mode 100644
index 00000000000..a8ff6e077af
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/port.h
@@ -0,0 +1,15 @@
+#ifndef __NVKM_I2C_PORT_H__
+#define __NVKM_I2C_PORT_H__
+
+#include "priv.h"
+
+#ifndef MSG
+#define MSG(l,f,a...) do { \
+ struct nouveau_i2c_port *_port = (void *)port; \
+ nv_##l(nv_object(_port)->engine, "PORT:%02x: "f, _port->index, ##a); \
+} while(0)
+#define DBG(f,a...) MSG(debug, f, ##a)
+#define ERR(f,a...) MSG(error, f, ##a)
+#endif
+
+#endif