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| author | Ben Skeggs <bskeggs@redhat.com> | 2014-06-11 10:28:18 +1000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2014-06-11 16:10:35 +1000 |
| commit | 37da5b87ac5abfdb26445cfe24830e15a2dc2758 (patch) | |
| tree | 44374d5c219aba37eea1443027131468adb3cbb9 | |
| parent | 9efc583ea9a474a8d89421da8aad4a2265f2ac5a (diff) | |
| download | op-kernel-dev-37da5b87ac5abfdb26445cfe24830e15a2dc2758.zip op-kernel-dev-37da5b87ac5abfdb26445cfe24830e15a2dc2758.tar.gz | |
drm/nouveau/i2c/anx9805: add debugging to aux transactions
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/i2c/anx9805.c | 24 | ||||
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/i2c/port.h | 15 |
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 477f5a0..2c2731a 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 0000000..a8ff6e0 --- /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 |
