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path: root/drivers/gpu/drm/radeon/atombios_dp.c
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Diffstat (limited to 'drivers/gpu/drm/radeon/atombios_dp.c')
-rw-r--r--drivers/gpu/drm/radeon/atombios_dp.c54
1 files changed, 29 insertions, 25 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c
index fb3ae07a1469..4ad7643fce5f 100644
--- a/drivers/gpu/drm/radeon/atombios_dp.c
+++ b/drivers/gpu/drm/radeon/atombios_dp.c
@@ -157,21 +157,22 @@ static int radeon_dp_aux_native_write(struct radeon_connector *radeon_connector,
msg[0] = address;
msg[1] = address >> 8;
- msg[2] = AUX_NATIVE_WRITE << 4;
+ msg[2] = DP_AUX_NATIVE_WRITE << 4;
msg[3] = (msg_bytes << 4) | (send_bytes - 1);
memcpy(&msg[4], send, send_bytes);
- for (retry = 0; retry < 4; retry++) {
+ for (retry = 0; retry < 7; retry++) {
ret = radeon_process_aux_ch(dig_connector->dp_i2c_bus,
msg, msg_bytes, NULL, 0, delay, &ack);
if (ret == -EBUSY)
continue;
else if (ret < 0)
return ret;
- if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_ACK)
+ ack >>= 4;
+ if ((ack & DP_AUX_NATIVE_REPLY_MASK) == DP_AUX_NATIVE_REPLY_ACK)
return send_bytes;
- else if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_DEFER)
- udelay(400);
+ else if ((ack & DP_AUX_NATIVE_REPLY_MASK) == DP_AUX_NATIVE_REPLY_DEFER)
+ usleep_range(400, 500);
else
return -EIO;
}
@@ -191,20 +192,21 @@ static int radeon_dp_aux_native_read(struct radeon_connector *radeon_connector,
msg[0] = address;
msg[1] = address >> 8;
- msg[2] = AUX_NATIVE_READ << 4;
+ msg[2] = DP_AUX_NATIVE_READ << 4;
msg[3] = (msg_bytes << 4) | (recv_bytes - 1);
- for (retry = 0; retry < 4; retry++) {
+ for (retry = 0; retry < 7; retry++) {
ret = radeon_process_aux_ch(dig_connector->dp_i2c_bus,
msg, msg_bytes, recv, recv_bytes, delay, &ack);
if (ret == -EBUSY)
continue;
else if (ret < 0)
return ret;
- if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_ACK)
+ ack >>= 4;
+ if ((ack & DP_AUX_NATIVE_REPLY_MASK) == DP_AUX_NATIVE_REPLY_ACK)
return ret;
- else if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_DEFER)
- udelay(400);
+ else if ((ack & DP_AUX_NATIVE_REPLY_MASK) == DP_AUX_NATIVE_REPLY_DEFER)
+ usleep_range(400, 500);
else if (ret == 0)
return -EPROTO;
else
@@ -246,12 +248,12 @@ int radeon_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode,
/* Set up the command byte */
if (mode & MODE_I2C_READ)
- msg[2] = AUX_I2C_READ << 4;
+ msg[2] = DP_AUX_I2C_READ << 4;
else
- msg[2] = AUX_I2C_WRITE << 4;
+ msg[2] = DP_AUX_I2C_WRITE << 4;
if (!(mode & MODE_I2C_STOP))
- msg[2] |= AUX_I2C_MOT << 4;
+ msg[2] |= DP_AUX_I2C_MOT << 4;
msg[0] = address;
msg[1] = address >> 8;
@@ -272,7 +274,7 @@ int radeon_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode,
break;
}
- for (retry = 0; retry < 4; retry++) {
+ for (retry = 0; retry < 7; retry++) {
ret = radeon_process_aux_ch(auxch,
msg, msg_bytes, reply, reply_bytes, 0, &ack);
if (ret == -EBUSY)
@@ -282,35 +284,35 @@ int radeon_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode,
return ret;
}
- switch (ack & AUX_NATIVE_REPLY_MASK) {
- case AUX_NATIVE_REPLY_ACK:
+ switch ((ack >> 4) & DP_AUX_NATIVE_REPLY_MASK) {
+ case DP_AUX_NATIVE_REPLY_ACK:
/* I2C-over-AUX Reply field is only valid
* when paired with AUX ACK.
*/
break;
- case AUX_NATIVE_REPLY_NACK:
+ case DP_AUX_NATIVE_REPLY_NACK:
DRM_DEBUG_KMS("aux_ch native nack\n");
return -EREMOTEIO;
- case AUX_NATIVE_REPLY_DEFER:
+ case DP_AUX_NATIVE_REPLY_DEFER:
DRM_DEBUG_KMS("aux_ch native defer\n");
- udelay(400);
+ usleep_range(500, 600);
continue;
default:
DRM_ERROR("aux_ch invalid native reply 0x%02x\n", ack);
return -EREMOTEIO;
}
- switch (ack & AUX_I2C_REPLY_MASK) {
- case AUX_I2C_REPLY_ACK:
+ switch ((ack >> 4) & DP_AUX_I2C_REPLY_MASK) {
+ case DP_AUX_I2C_REPLY_ACK:
if (mode == MODE_I2C_READ)
*read_byte = reply[0];
return ret;
- case AUX_I2C_REPLY_NACK:
+ case DP_AUX_I2C_REPLY_NACK:
DRM_DEBUG_KMS("aux_i2c nack\n");
return -EREMOTEIO;
- case AUX_I2C_REPLY_DEFER:
+ case DP_AUX_I2C_REPLY_DEFER:
DRM_DEBUG_KMS("aux_i2c defer\n");
- udelay(400);
+ usleep_range(400, 500);
break;
default:
DRM_ERROR("aux_i2c invalid reply 0x%02x\n", ack);
@@ -671,9 +673,11 @@ static int radeon_dp_link_train_init(struct radeon_dp_link_train_info *dp_info)
u8 tmp;
/* power up the sink */
- if (dp_info->dpcd[0] >= 0x11)
+ if (dp_info->dpcd[0] >= 0x11) {
radeon_write_dpcd_reg(dp_info->radeon_connector,
DP_SET_POWER, DP_SET_POWER_D0);
+ usleep_range(1000, 2000);
+ }
/* possibly enable downspread on the sink */
if (dp_info->dpcd[3] & 0x1)