diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/subdev/i2c/anx9805.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/i2c/anx9805.c | 27 |
1 files changed, 21 insertions, 6 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/anx9805.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/anx9805.c index 4b195ac4da66..2c2731a6cf91 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 <subdev/i2c.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); @@ -60,21 +62,29 @@ anx9805_train(struct nouveau_i2c_port *port, int link_nr, int link_bw, bool enh) } static int -anx9805_aux(struct nouveau_i2c_port *port, u8 type, u32 addr, u8 *data, u8 size) +anx9805_aux(struct nouveau_i2c_port *port, bool retry, + u8 type, u32 addr, u8 *data, u8 size) { 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); @@ -93,8 +103,13 @@ anx9805_aux(struct nouveau_i2c_port *port, u8 type, u32 addr, u8 *data, u8 size) 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); |