Commit a42892ed authored by Dave Airlie's avatar Dave Airlie

Merge branch 'drm-next-3.15-wip' of git://people.freedesktop.org/~deathsimple/linux into drm-next

Some i2c fixes over DisplayPort.

* 'drm-next-3.15-wip' of git://people.freedesktop.org/~deathsimple/linux:
  drm/radeon: Improve vramlimit module param documentation
  drm/radeon: fix audio pin counts for DCE6+ (v2)
  drm/radeon/dp: switch to the common i2c over aux code
  drm/dp/i2c: Update comments about common i2c over dp assumptions (v3)
  drm/dp/i2c: send bare addresses to properly reset i2c connections (v4)
  drm/radeon/dp: handle zero sized i2c over aux transactions (v2)
  drm/i915: support address only i2c-over-aux transactions
  drm/tegra: dp: Support address-only I2C-over-AUX transactions
parents c044330b 8902e6f2
...@@ -577,7 +577,9 @@ static u32 drm_dp_i2c_functionality(struct i2c_adapter *adapter) ...@@ -577,7 +577,9 @@ static u32 drm_dp_i2c_functionality(struct i2c_adapter *adapter)
/* /*
* Transfer a single I2C-over-AUX message and handle various error conditions, * Transfer a single I2C-over-AUX message and handle various error conditions,
* retrying the transaction as appropriate. * retrying the transaction as appropriate. It is assumed that the
* aux->transfer function does not modify anything in the msg other than the
* reply field.
*/ */
static int drm_dp_i2c_do_msg(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg) static int drm_dp_i2c_do_msg(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)
{ {
...@@ -665,11 +667,26 @@ static int drm_dp_i2c_xfer(struct i2c_adapter *adapter, struct i2c_msg *msgs, ...@@ -665,11 +667,26 @@ static int drm_dp_i2c_xfer(struct i2c_adapter *adapter, struct i2c_msg *msgs,
{ {
struct drm_dp_aux *aux = adapter->algo_data; struct drm_dp_aux *aux = adapter->algo_data;
unsigned int i, j; unsigned int i, j;
for (i = 0; i < num; i++) {
struct drm_dp_aux_msg msg; struct drm_dp_aux_msg msg;
int err; int err = 0;
memset(&msg, 0, sizeof(msg));
for (i = 0; i < num; i++) {
msg.address = msgs[i].addr;
msg.request = (msgs[i].flags & I2C_M_RD) ?
DP_AUX_I2C_READ :
DP_AUX_I2C_WRITE;
msg.request |= DP_AUX_I2C_MOT;
/* Send a bare address packet to start the transaction.
* Zero sized messages specify an address only (bare
* address) transaction.
*/
msg.buffer = NULL;
msg.size = 0;
err = drm_dp_i2c_do_msg(aux, &msg);
if (err < 0)
break;
/* /*
* Many hardware implementations support FIFOs larger than a * Many hardware implementations support FIFOs larger than a
* single byte, but it has been empirically determined that * single byte, but it has been empirically determined that
...@@ -678,30 +695,28 @@ static int drm_dp_i2c_xfer(struct i2c_adapter *adapter, struct i2c_msg *msgs, ...@@ -678,30 +695,28 @@ static int drm_dp_i2c_xfer(struct i2c_adapter *adapter, struct i2c_msg *msgs,
* transferred byte-by-byte. * transferred byte-by-byte.
*/ */
for (j = 0; j < msgs[i].len; j++) { for (j = 0; j < msgs[i].len; j++) {
memset(&msg, 0, sizeof(msg));
msg.address = msgs[i].addr;
msg.request = (msgs[i].flags & I2C_M_RD) ?
DP_AUX_I2C_READ :
DP_AUX_I2C_WRITE;
/*
* All messages except the last one are middle-of-
* transfer messages.
*/
if ((i < num - 1) || (j < msgs[i].len - 1))
msg.request |= DP_AUX_I2C_MOT;
msg.buffer = msgs[i].buf + j; msg.buffer = msgs[i].buf + j;
msg.size = 1; msg.size = 1;
err = drm_dp_i2c_do_msg(aux, &msg); err = drm_dp_i2c_do_msg(aux, &msg);
if (err < 0) if (err < 0)
return err; break;
} }
if (err < 0)
break;
} }
if (err >= 0)
err = num;
/* Send a bare address packet to close out the transaction.
* Zero sized messages specify an address only (bare
* address) transaction.
*/
msg.request &= ~DP_AUX_I2C_MOT;
msg.buffer = NULL;
msg.size = 0;
(void)drm_dp_i2c_do_msg(aux, &msg);
return num; return err;
} }
static const struct i2c_algorithm drm_dp_i2c_algo = { static const struct i2c_algorithm drm_dp_i2c_algo = {
......
...@@ -575,7 +575,8 @@ intel_dp_aux_ch(struct intel_dp *intel_dp, ...@@ -575,7 +575,8 @@ intel_dp_aux_ch(struct intel_dp *intel_dp,
return ret; return ret;
} }
#define HEADER_SIZE 4 #define BARE_ADDRESS_SIZE 3
#define HEADER_SIZE (BARE_ADDRESS_SIZE + 1)
static ssize_t static ssize_t
intel_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg) intel_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)
{ {
...@@ -592,7 +593,7 @@ intel_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg) ...@@ -592,7 +593,7 @@ intel_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)
switch (msg->request & ~DP_AUX_I2C_MOT) { switch (msg->request & ~DP_AUX_I2C_MOT) {
case DP_AUX_NATIVE_WRITE: case DP_AUX_NATIVE_WRITE:
case DP_AUX_I2C_WRITE: case DP_AUX_I2C_WRITE:
txsize = HEADER_SIZE + msg->size; txsize = msg->size ? HEADER_SIZE + msg->size : BARE_ADDRESS_SIZE;
rxsize = 1; rxsize = 1;
if (WARN_ON(txsize > 20)) if (WARN_ON(txsize > 20))
...@@ -611,7 +612,7 @@ intel_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg) ...@@ -611,7 +612,7 @@ intel_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)
case DP_AUX_NATIVE_READ: case DP_AUX_NATIVE_READ:
case DP_AUX_I2C_READ: case DP_AUX_I2C_READ:
txsize = HEADER_SIZE; txsize = msg->size ? HEADER_SIZE : BARE_ADDRESS_SIZE;
rxsize = msg->size + 1; rxsize = msg->size + 1;
if (WARN_ON(rxsize > 20)) if (WARN_ON(rxsize > 20))
......
...@@ -142,7 +142,8 @@ static int radeon_process_aux_ch(struct radeon_i2c_chan *chan, ...@@ -142,7 +142,8 @@ static int radeon_process_aux_ch(struct radeon_i2c_chan *chan,
return recv_bytes; return recv_bytes;
} }
#define HEADER_SIZE 4 #define BARE_ADDRESS_SIZE 3
#define HEADER_SIZE (BARE_ADDRESS_SIZE + 1)
static ssize_t static ssize_t
radeon_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg) radeon_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)
...@@ -160,12 +161,18 @@ radeon_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg) ...@@ -160,12 +161,18 @@ radeon_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)
tx_buf[0] = msg->address & 0xff; tx_buf[0] = msg->address & 0xff;
tx_buf[1] = msg->address >> 8; tx_buf[1] = msg->address >> 8;
tx_buf[2] = msg->request << 4; tx_buf[2] = msg->request << 4;
tx_buf[3] = msg->size - 1; tx_buf[3] = msg->size ? (msg->size - 1) : 0;
switch (msg->request & ~DP_AUX_I2C_MOT) { switch (msg->request & ~DP_AUX_I2C_MOT) {
case DP_AUX_NATIVE_WRITE: case DP_AUX_NATIVE_WRITE:
case DP_AUX_I2C_WRITE: case DP_AUX_I2C_WRITE:
/* tx_size needs to be 4 even for bare address packets since the atom
* table needs the info in tx_buf[3].
*/
tx_size = HEADER_SIZE + msg->size; tx_size = HEADER_SIZE + msg->size;
if (msg->size == 0)
tx_buf[3] |= BARE_ADDRESS_SIZE << 4;
else
tx_buf[3] |= tx_size << 4; tx_buf[3] |= tx_size << 4;
memcpy(tx_buf + HEADER_SIZE, msg->buffer, msg->size); memcpy(tx_buf + HEADER_SIZE, msg->buffer, msg->size);
ret = radeon_process_aux_ch(chan, ret = radeon_process_aux_ch(chan,
...@@ -176,7 +183,13 @@ radeon_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg) ...@@ -176,7 +183,13 @@ radeon_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)
break; break;
case DP_AUX_NATIVE_READ: case DP_AUX_NATIVE_READ:
case DP_AUX_I2C_READ: case DP_AUX_I2C_READ:
/* tx_size needs to be 4 even for bare address packets since the atom
* table needs the info in tx_buf[3].
*/
tx_size = HEADER_SIZE; tx_size = HEADER_SIZE;
if (msg->size == 0)
tx_buf[3] |= BARE_ADDRESS_SIZE << 4;
else
tx_buf[3] |= tx_size << 4; tx_buf[3] |= tx_size << 4;
ret = radeon_process_aux_ch(chan, ret = radeon_process_aux_ch(chan,
tx_buf, tx_size, msg->buffer, msg->size, delay, &ack); tx_buf, tx_size, msg->buffer, msg->size, delay, &ack);
...@@ -186,7 +199,7 @@ radeon_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg) ...@@ -186,7 +199,7 @@ radeon_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)
break; break;
} }
if (ret > 0) if (ret >= 0)
msg->reply = ack >> 4; msg->reply = ack >> 4;
return ret; return ret;
...@@ -194,98 +207,15 @@ radeon_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg) ...@@ -194,98 +207,15 @@ radeon_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)
void radeon_dp_aux_init(struct radeon_connector *radeon_connector) void radeon_dp_aux_init(struct radeon_connector *radeon_connector)
{ {
struct radeon_connector_atom_dig *dig_connector = radeon_connector->con_priv;
dig_connector->dp_i2c_bus->aux.dev = radeon_connector->base.kdev;
dig_connector->dp_i2c_bus->aux.transfer = radeon_dp_aux_transfer;
}
int radeon_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode,
u8 write_byte, u8 *read_byte)
{
struct i2c_algo_dp_aux_data *algo_data = adapter->algo_data;
struct radeon_i2c_chan *auxch = i2c_get_adapdata(adapter);
u16 address = algo_data->address;
u8 msg[5];
u8 reply[2];
unsigned retry;
int msg_bytes;
int reply_bytes = 1;
int ret; int ret;
u8 ack;
/* Set up the address */
msg[0] = address;
msg[1] = address >> 8;
/* Set up the command byte */
if (mode & MODE_I2C_READ) {
msg[2] = DP_AUX_I2C_READ << 4;
msg_bytes = 4;
msg[3] = msg_bytes << 4;
} else {
msg[2] = DP_AUX_I2C_WRITE << 4;
msg_bytes = 5;
msg[3] = msg_bytes << 4;
msg[4] = write_byte;
}
/* special handling for start/stop */ radeon_connector->ddc_bus->aux.dev = radeon_connector->base.kdev;
if (mode & (MODE_I2C_START | MODE_I2C_STOP)) radeon_connector->ddc_bus->aux.transfer = radeon_dp_aux_transfer;
msg[3] = 3 << 4; ret = drm_dp_aux_register_i2c_bus(&radeon_connector->ddc_bus->aux);
if (!ret)
/* Set MOT bit for all but stop */ radeon_connector->ddc_bus->has_aux = true;
if ((mode & MODE_I2C_STOP) == 0)
msg[2] |= DP_AUX_I2C_MOT << 4;
for (retry = 0; retry < 7; retry++) {
ret = radeon_process_aux_ch(auxch,
msg, msg_bytes, reply, reply_bytes, 0, &ack);
if (ret == -EBUSY)
continue;
else if (ret < 0) {
DRM_DEBUG_KMS("aux_ch failed %d\n", ret);
return ret;
}
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 DP_AUX_NATIVE_REPLY_NACK:
DRM_DEBUG_KMS("aux_ch native nack\n");
return -EREMOTEIO;
case DP_AUX_NATIVE_REPLY_DEFER:
DRM_DEBUG_KMS("aux_ch native defer\n");
usleep_range(500, 600);
continue;
default:
DRM_ERROR("aux_ch invalid native reply 0x%02x\n", ack);
return -EREMOTEIO;
}
switch ((ack >> 4) & DP_AUX_I2C_REPLY_MASK) { WARN(ret, "drm_dp_aux_register_i2c_bus() failed with error %d\n", ret);
case DP_AUX_I2C_REPLY_ACK:
if (mode == MODE_I2C_READ)
*read_byte = reply[0];
return ret;
case DP_AUX_I2C_REPLY_NACK:
DRM_DEBUG_KMS("aux_i2c nack\n");
return -EREMOTEIO;
case DP_AUX_I2C_REPLY_DEFER:
DRM_DEBUG_KMS("aux_i2c defer\n");
usleep_range(400, 500);
break;
default:
DRM_ERROR("aux_i2c invalid reply 0x%02x\n", ack);
return -EREMOTEIO;
}
}
DRM_DEBUG_KMS("aux i2c too many retries, giving up\n");
return -EREMOTEIO;
} }
/***** general DP utility functions *****/ /***** general DP utility functions *****/
...@@ -420,12 +350,11 @@ static u8 radeon_dp_encoder_service(struct radeon_device *rdev, ...@@ -420,12 +350,11 @@ static u8 radeon_dp_encoder_service(struct radeon_device *rdev,
u8 radeon_dp_getsinktype(struct radeon_connector *radeon_connector) u8 radeon_dp_getsinktype(struct radeon_connector *radeon_connector)
{ {
struct radeon_connector_atom_dig *dig_connector = radeon_connector->con_priv;
struct drm_device *dev = radeon_connector->base.dev; struct drm_device *dev = radeon_connector->base.dev;
struct radeon_device *rdev = dev->dev_private; struct radeon_device *rdev = dev->dev_private;
return radeon_dp_encoder_service(rdev, ATOM_DP_ACTION_GET_SINK_TYPE, 0, return radeon_dp_encoder_service(rdev, ATOM_DP_ACTION_GET_SINK_TYPE, 0,
dig_connector->dp_i2c_bus->rec.i2c_id, 0); radeon_connector->ddc_bus->rec.i2c_id, 0);
} }
static void radeon_dp_probe_oui(struct radeon_connector *radeon_connector) static void radeon_dp_probe_oui(struct radeon_connector *radeon_connector)
...@@ -436,11 +365,11 @@ static void radeon_dp_probe_oui(struct radeon_connector *radeon_connector) ...@@ -436,11 +365,11 @@ static void radeon_dp_probe_oui(struct radeon_connector *radeon_connector)
if (!(dig_connector->dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_OUI_SUPPORT)) if (!(dig_connector->dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_OUI_SUPPORT))
return; return;
if (drm_dp_dpcd_read(&dig_connector->dp_i2c_bus->aux, DP_SINK_OUI, buf, 3)) if (drm_dp_dpcd_read(&radeon_connector->ddc_bus->aux, DP_SINK_OUI, buf, 3))
DRM_DEBUG_KMS("Sink OUI: %02hx%02hx%02hx\n", DRM_DEBUG_KMS("Sink OUI: %02hx%02hx%02hx\n",
buf[0], buf[1], buf[2]); buf[0], buf[1], buf[2]);
if (drm_dp_dpcd_read(&dig_connector->dp_i2c_bus->aux, DP_BRANCH_OUI, buf, 3)) if (drm_dp_dpcd_read(&radeon_connector->ddc_bus->aux, DP_BRANCH_OUI, buf, 3))
DRM_DEBUG_KMS("Branch OUI: %02hx%02hx%02hx\n", DRM_DEBUG_KMS("Branch OUI: %02hx%02hx%02hx\n",
buf[0], buf[1], buf[2]); buf[0], buf[1], buf[2]);
} }
...@@ -451,7 +380,7 @@ bool radeon_dp_getdpcd(struct radeon_connector *radeon_connector) ...@@ -451,7 +380,7 @@ bool radeon_dp_getdpcd(struct radeon_connector *radeon_connector)
u8 msg[DP_DPCD_SIZE]; u8 msg[DP_DPCD_SIZE];
int ret, i; int ret, i;
ret = drm_dp_dpcd_read(&dig_connector->dp_i2c_bus->aux, DP_DPCD_REV, msg, ret = drm_dp_dpcd_read(&radeon_connector->ddc_bus->aux, DP_DPCD_REV, msg,
DP_DPCD_SIZE); DP_DPCD_SIZE);
if (ret > 0) { if (ret > 0) {
memcpy(dig_connector->dpcd, msg, DP_DPCD_SIZE); memcpy(dig_connector->dpcd, msg, DP_DPCD_SIZE);
...@@ -489,7 +418,7 @@ int radeon_dp_get_panel_mode(struct drm_encoder *encoder, ...@@ -489,7 +418,7 @@ int radeon_dp_get_panel_mode(struct drm_encoder *encoder,
if (dp_bridge != ENCODER_OBJECT_ID_NONE) { if (dp_bridge != ENCODER_OBJECT_ID_NONE) {
/* DP bridge chips */ /* DP bridge chips */
drm_dp_dpcd_readb(&dig_connector->dp_i2c_bus->aux, drm_dp_dpcd_readb(&radeon_connector->ddc_bus->aux,
DP_EDP_CONFIGURATION_CAP, &tmp); DP_EDP_CONFIGURATION_CAP, &tmp);
if (tmp & 1) if (tmp & 1)
panel_mode = DP_PANEL_MODE_INTERNAL_DP2_MODE; panel_mode = DP_PANEL_MODE_INTERNAL_DP2_MODE;
...@@ -500,7 +429,7 @@ int radeon_dp_get_panel_mode(struct drm_encoder *encoder, ...@@ -500,7 +429,7 @@ int radeon_dp_get_panel_mode(struct drm_encoder *encoder,
panel_mode = DP_PANEL_MODE_EXTERNAL_DP_MODE; panel_mode = DP_PANEL_MODE_EXTERNAL_DP_MODE;
} else if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) { } else if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) {
/* eDP */ /* eDP */
drm_dp_dpcd_readb(&dig_connector->dp_i2c_bus->aux, drm_dp_dpcd_readb(&radeon_connector->ddc_bus->aux,
DP_EDP_CONFIGURATION_CAP, &tmp); DP_EDP_CONFIGURATION_CAP, &tmp);
if (tmp & 1) if (tmp & 1)
panel_mode = DP_PANEL_MODE_INTERNAL_DP2_MODE; panel_mode = DP_PANEL_MODE_INTERNAL_DP2_MODE;
...@@ -554,7 +483,8 @@ bool radeon_dp_needs_link_train(struct radeon_connector *radeon_connector) ...@@ -554,7 +483,8 @@ bool radeon_dp_needs_link_train(struct radeon_connector *radeon_connector)
u8 link_status[DP_LINK_STATUS_SIZE]; u8 link_status[DP_LINK_STATUS_SIZE];
struct radeon_connector_atom_dig *dig = radeon_connector->con_priv; struct radeon_connector_atom_dig *dig = radeon_connector->con_priv;
if (drm_dp_dpcd_read_link_status(&dig->dp_i2c_bus->aux, link_status) <= 0) if (drm_dp_dpcd_read_link_status(&radeon_connector->ddc_bus->aux, link_status)
<= 0)
return false; return false;
if (drm_dp_channel_eq_ok(link_status, dig->dp_lane_count)) if (drm_dp_channel_eq_ok(link_status, dig->dp_lane_count))
return false; return false;
...@@ -574,7 +504,7 @@ void radeon_dp_set_rx_power_state(struct drm_connector *connector, ...@@ -574,7 +504,7 @@ void radeon_dp_set_rx_power_state(struct drm_connector *connector,
/* power up/down the sink */ /* power up/down the sink */
if (dig_connector->dpcd[0] >= 0x11) { if (dig_connector->dpcd[0] >= 0x11) {
drm_dp_dpcd_writeb(&dig_connector->dp_i2c_bus->aux, drm_dp_dpcd_writeb(&radeon_connector->ddc_bus->aux,
DP_SET_POWER, power_state); DP_SET_POWER, power_state);
usleep_range(1000, 2000); usleep_range(1000, 2000);
} }
...@@ -878,7 +808,7 @@ void radeon_dp_link_train(struct drm_encoder *encoder, ...@@ -878,7 +808,7 @@ void radeon_dp_link_train(struct drm_encoder *encoder,
else else
dp_info.enc_id |= ATOM_DP_CONFIG_LINK_A; dp_info.enc_id |= ATOM_DP_CONFIG_LINK_A;
drm_dp_dpcd_readb(&dig_connector->dp_i2c_bus->aux, DP_MAX_LANE_COUNT, &tmp); drm_dp_dpcd_readb(&radeon_connector->ddc_bus->aux, DP_MAX_LANE_COUNT, &tmp);
if (ASIC_IS_DCE5(rdev) && (tmp & DP_TPS3_SUPPORTED)) if (ASIC_IS_DCE5(rdev) && (tmp & DP_TPS3_SUPPORTED))
dp_info.tp3_supported = true; dp_info.tp3_supported = true;
else else
...@@ -890,7 +820,7 @@ void radeon_dp_link_train(struct drm_encoder *encoder, ...@@ -890,7 +820,7 @@ void radeon_dp_link_train(struct drm_encoder *encoder,
dp_info.connector = connector; dp_info.connector = connector;
dp_info.dp_lane_count = dig_connector->dp_lane_count; dp_info.dp_lane_count = dig_connector->dp_lane_count;
dp_info.dp_clock = dig_connector->dp_clock; dp_info.dp_clock = dig_connector->dp_clock;
dp_info.aux = &dig_connector->dp_i2c_bus->aux; dp_info.aux = &radeon_connector->ddc_bus->aux;
if (radeon_dp_link_train_init(&dp_info)) if (radeon_dp_link_train_init(&dp_info))
goto done; goto done;
......
...@@ -309,11 +309,17 @@ int dce6_audio_init(struct radeon_device *rdev) ...@@ -309,11 +309,17 @@ int dce6_audio_init(struct radeon_device *rdev)
rdev->audio.enabled = true; rdev->audio.enabled = true;
if (ASIC_IS_DCE8(rdev)) if (ASIC_IS_DCE81(rdev)) /* KV: 4 streams, 7 endpoints */
rdev->audio.num_pins = 7;
else if (ASIC_IS_DCE83(rdev)) /* KB: 2 streams, 3 endpoints */
rdev->audio.num_pins = 3;
else if (ASIC_IS_DCE8(rdev)) /* BN/HW: 6 streams, 7 endpoints */
rdev->audio.num_pins = 7;
else if (ASIC_IS_DCE61(rdev)) /* TN: 4 streams, 6 endpoints */
rdev->audio.num_pins = 6; rdev->audio.num_pins = 6;
else if (ASIC_IS_DCE61(rdev)) else if (ASIC_IS_DCE64(rdev)) /* OL: 2 streams, 2 endpoints */
rdev->audio.num_pins = 4; rdev->audio.num_pins = 2;
else else /* SI: 6 streams, 6 endpoints */
rdev->audio.num_pins = 6; rdev->audio.num_pins = 6;
for (i = 0; i < rdev->audio.num_pins; i++) { for (i = 0; i < rdev->audio.num_pins; i++) {
......
...@@ -739,7 +739,7 @@ union radeon_irq_stat_regs { ...@@ -739,7 +739,7 @@ union radeon_irq_stat_regs {
struct cik_irq_stat_regs cik; struct cik_irq_stat_regs cik;
}; };
#define RADEON_MAX_HPD_PINS 6 #define RADEON_MAX_HPD_PINS 7
#define RADEON_MAX_CRTCS 6 #define RADEON_MAX_CRTCS 6
#define RADEON_MAX_AFMT_BLOCKS 7 #define RADEON_MAX_AFMT_BLOCKS 7
...@@ -2632,6 +2632,9 @@ void r100_pll_errata_after_index(struct radeon_device *rdev); ...@@ -2632,6 +2632,9 @@ void r100_pll_errata_after_index(struct radeon_device *rdev);
#define ASIC_IS_DCE64(rdev) ((rdev->family == CHIP_OLAND)) #define ASIC_IS_DCE64(rdev) ((rdev->family == CHIP_OLAND))
#define ASIC_IS_NODCE(rdev) ((rdev->family == CHIP_HAINAN)) #define ASIC_IS_NODCE(rdev) ((rdev->family == CHIP_HAINAN))
#define ASIC_IS_DCE8(rdev) ((rdev->family >= CHIP_BONAIRE)) #define ASIC_IS_DCE8(rdev) ((rdev->family >= CHIP_BONAIRE))
#define ASIC_IS_DCE81(rdev) ((rdev->family == CHIP_KAVERI))
#define ASIC_IS_DCE82(rdev) ((rdev->family == CHIP_BONAIRE))
#define ASIC_IS_DCE83(rdev) ((rdev->family == CHIP_KABINI))
#define ASIC_IS_LOMBOK(rdev) ((rdev->ddev->pdev->device == 0x6849) || \ #define ASIC_IS_LOMBOK(rdev) ((rdev->ddev->pdev->device == 0x6849) || \
(rdev->ddev->pdev->device == 0x6850) || \ (rdev->ddev->pdev->device == 0x6850) || \
......
...@@ -1261,21 +1261,6 @@ static const struct drm_connector_funcs radeon_dvi_connector_funcs = { ...@@ -1261,21 +1261,6 @@ static const struct drm_connector_funcs radeon_dvi_connector_funcs = {
.force = radeon_dvi_force, .force = radeon_dvi_force,
}; };
static void radeon_dp_connector_destroy(struct drm_connector *connector)
{
struct radeon_connector *radeon_connector = to_radeon_connector(connector);
struct radeon_connector_atom_dig *radeon_dig_connector = radeon_connector->con_priv;
if (radeon_connector->edid)
kfree(radeon_connector->edid);
if (radeon_dig_connector->dp_i2c_bus)
radeon_i2c_destroy(radeon_dig_connector->dp_i2c_bus);
kfree(radeon_connector->con_priv);
drm_sysfs_connector_remove(connector);
drm_connector_cleanup(connector);
kfree(connector);
}
static int radeon_dp_get_modes(struct drm_connector *connector) static int radeon_dp_get_modes(struct drm_connector *connector)
{ {
struct radeon_connector *radeon_connector = to_radeon_connector(connector); struct radeon_connector *radeon_connector = to_radeon_connector(connector);
...@@ -1553,7 +1538,7 @@ static const struct drm_connector_funcs radeon_dp_connector_funcs = { ...@@ -1553,7 +1538,7 @@ static const struct drm_connector_funcs radeon_dp_connector_funcs = {
.detect = radeon_dp_detect, .detect = radeon_dp_detect,
.fill_modes = drm_helper_probe_single_connector_modes, .fill_modes = drm_helper_probe_single_connector_modes,
.set_property = radeon_connector_set_property, .set_property = radeon_connector_set_property,
.destroy = radeon_dp_connector_destroy, .destroy = radeon_connector_destroy,
.force = radeon_dvi_force, .force = radeon_dvi_force,
}; };
...@@ -1562,7 +1547,7 @@ static const struct drm_connector_funcs radeon_edp_connector_funcs = { ...@@ -1562,7 +1547,7 @@ static const struct drm_connector_funcs radeon_edp_connector_funcs = {
.detect = radeon_dp_detect, .detect = radeon_dp_detect,
.fill_modes = drm_helper_probe_single_connector_modes, .fill_modes = drm_helper_probe_single_connector_modes,
.set_property = radeon_lvds_set_property, .set_property = radeon_lvds_set_property,
.destroy = radeon_dp_connector_destroy, .destroy = radeon_connector_destroy,
.force = radeon_dvi_force, .force = radeon_dvi_force,
}; };
...@@ -1571,7 +1556,7 @@ static const struct drm_connector_funcs radeon_lvds_bridge_connector_funcs = { ...@@ -1571,7 +1556,7 @@ static const struct drm_connector_funcs radeon_lvds_bridge_connector_funcs = {
.detect = radeon_dp_detect, .detect = radeon_dp_detect,
.fill_modes = drm_helper_probe_single_connector_modes, .fill_modes = drm_helper_probe_single_connector_modes,
.set_property = radeon_lvds_set_property, .set_property = radeon_lvds_set_property,
.destroy = radeon_dp_connector_destroy, .destroy = radeon_connector_destroy,
.force = radeon_dvi_force, .force = radeon_dvi_force,
}; };
...@@ -1668,17 +1653,10 @@ radeon_add_atom_connector(struct drm_device *dev, ...@@ -1668,17 +1653,10 @@ radeon_add_atom_connector(struct drm_device *dev,
radeon_dig_connector->igp_lane_info = igp_lane_info; radeon_dig_connector->igp_lane_info = igp_lane_info;
radeon_connector->con_priv = radeon_dig_connector; radeon_connector->con_priv = radeon_dig_connector;
if (i2c_bus->valid) { if (i2c_bus->valid) {
/* add DP i2c bus */ radeon_connector->ddc_bus = radeon_i2c_lookup(rdev, i2c_bus);
if (connector_type == DRM_MODE_CONNECTOR_eDP) if (radeon_connector->ddc_bus)
radeon_dig_connector->dp_i2c_bus = radeon_i2c_create_dp(dev, i2c_bus, "eDP-auxch");
else
radeon_dig_connector->dp_i2c_bus = radeon_i2c_create_dp(dev, i2c_bus, "DP-auxch");
if (radeon_dig_connector->dp_i2c_bus)
has_aux = true; has_aux = true;
else else
DRM_ERROR("DP: Failed to assign dp ddc bus! Check dmesg for i2c errors.\n");
radeon_connector->ddc_bus = radeon_i2c_lookup(rdev, i2c_bus);
if (!radeon_connector->ddc_bus)
DRM_ERROR("DP: Failed to assign ddc bus! Check dmesg for i2c errors.\n"); DRM_ERROR("DP: Failed to assign ddc bus! Check dmesg for i2c errors.\n");
} }
switch (connector_type) { switch (connector_type) {
...@@ -1893,10 +1871,6 @@ radeon_add_atom_connector(struct drm_device *dev, ...@@ -1893,10 +1871,6 @@ radeon_add_atom_connector(struct drm_device *dev,
drm_connector_init(dev, &radeon_connector->base, &radeon_dp_connector_funcs, connector_type); drm_connector_init(dev, &radeon_connector->base, &radeon_dp_connector_funcs, connector_type);
drm_connector_helper_add(&radeon_connector->base, &radeon_dp_connector_helper_funcs); drm_connector_helper_add(&radeon_connector->base, &radeon_dp_connector_helper_funcs);
if (i2c_bus->valid) { if (i2c_bus->valid) {
/* add DP i2c bus */
radeon_dig_connector->dp_i2c_bus = radeon_i2c_create_dp(dev, i2c_bus, "DP-auxch");
if (!radeon_dig_connector->dp_i2c_bus)
DRM_ERROR("DP: Failed to assign dp ddc bus! Check dmesg for i2c errors.\n");
radeon_connector->ddc_bus = radeon_i2c_lookup(rdev, i2c_bus); radeon_connector->ddc_bus = radeon_i2c_lookup(rdev, i2c_bus);
if (radeon_connector->ddc_bus) if (radeon_connector->ddc_bus)
has_aux = true; has_aux = true;
...@@ -1942,14 +1916,10 @@ radeon_add_atom_connector(struct drm_device *dev, ...@@ -1942,14 +1916,10 @@ radeon_add_atom_connector(struct drm_device *dev,
drm_connector_init(dev, &radeon_connector->base, &radeon_edp_connector_funcs, connector_type); drm_connector_init(dev, &radeon_connector->base, &radeon_edp_connector_funcs, connector_type);
drm_connector_helper_add(&radeon_connector->base, &radeon_dp_connector_helper_funcs); drm_connector_helper_add(&radeon_connector->base, &radeon_dp_connector_helper_funcs);
if (i2c_bus->valid) { if (i2c_bus->valid) {
/* add DP i2c bus */ radeon_connector->ddc_bus = radeon_i2c_lookup(rdev, i2c_bus);
radeon_dig_connector->dp_i2c_bus = radeon_i2c_create_dp(dev, i2c_bus, "eDP-auxch"); if (radeon_connector->ddc_bus)
if (radeon_dig_connector->dp_i2c_bus)
has_aux = true; has_aux = true;
else else
DRM_ERROR("DP: Failed to assign dp ddc bus! Check dmesg for i2c errors.\n");
radeon_connector->ddc_bus = radeon_i2c_lookup(rdev, i2c_bus);
if (!radeon_connector->ddc_bus)
DRM_ERROR("DP: Failed to assign ddc bus! Check dmesg for i2c errors.\n"); DRM_ERROR("DP: Failed to assign ddc bus! Check dmesg for i2c errors.\n");
} }
drm_object_attach_property(&radeon_connector->base.base, drm_object_attach_property(&radeon_connector->base.base,
......
...@@ -759,19 +759,18 @@ int radeon_ddc_get_modes(struct radeon_connector *radeon_connector) ...@@ -759,19 +759,18 @@ int radeon_ddc_get_modes(struct radeon_connector *radeon_connector)
if (radeon_connector_encoder_get_dp_bridge_encoder_id(&radeon_connector->base) != if (radeon_connector_encoder_get_dp_bridge_encoder_id(&radeon_connector->base) !=
ENCODER_OBJECT_ID_NONE) { ENCODER_OBJECT_ID_NONE) {
struct radeon_connector_atom_dig *dig = radeon_connector->con_priv; if (radeon_connector->ddc_bus->has_aux)
if (dig->dp_i2c_bus)
radeon_connector->edid = drm_get_edid(&radeon_connector->base, radeon_connector->edid = drm_get_edid(&radeon_connector->base,
&dig->dp_i2c_bus->adapter); &radeon_connector->ddc_bus->aux.ddc);
} else if ((radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_DisplayPort) || } else if ((radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_DisplayPort) ||
(radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_eDP)) { (radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_eDP)) {
struct radeon_connector_atom_dig *dig = radeon_connector->con_priv; struct radeon_connector_atom_dig *dig = radeon_connector->con_priv;
if ((dig->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT || if ((dig->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT ||
dig->dp_sink_type == CONNECTOR_OBJECT_ID_eDP) && dig->dp_i2c_bus) dig->dp_sink_type == CONNECTOR_OBJECT_ID_eDP) &&
radeon_connector->ddc_bus->has_aux)
radeon_connector->edid = drm_get_edid(&radeon_connector->base, radeon_connector->edid = drm_get_edid(&radeon_connector->base,
&dig->dp_i2c_bus->adapter); &radeon_connector->ddc_bus->aux.ddc);
else if (radeon_connector->ddc_bus && !radeon_connector->edid) else if (radeon_connector->ddc_bus && !radeon_connector->edid)
radeon_connector->edid = drm_get_edid(&radeon_connector->base, radeon_connector->edid = drm_get_edid(&radeon_connector->base,
&radeon_connector->ddc_bus->adapter); &radeon_connector->ddc_bus->adapter);
......
...@@ -185,7 +185,7 @@ module_param_named(dynclks, radeon_dynclks, int, 0444); ...@@ -185,7 +185,7 @@ module_param_named(dynclks, radeon_dynclks, int, 0444);
MODULE_PARM_DESC(r4xx_atom, "Enable ATOMBIOS modesetting for R4xx"); MODULE_PARM_DESC(r4xx_atom, "Enable ATOMBIOS modesetting for R4xx");
module_param_named(r4xx_atom, radeon_r4xx_atom, int, 0444); module_param_named(r4xx_atom, radeon_r4xx_atom, int, 0444);
MODULE_PARM_DESC(vramlimit, "Restrict VRAM for testing"); MODULE_PARM_DESC(vramlimit, "Restrict VRAM for testing, in megabytes");
module_param_named(vramlimit, radeon_vram_limit, int, 0600); module_param_named(vramlimit, radeon_vram_limit, int, 0600);
MODULE_PARM_DESC(agpmode, "AGP Mode (-1 == PCI)"); MODULE_PARM_DESC(agpmode, "AGP Mode (-1 == PCI)");
......
...@@ -64,8 +64,7 @@ bool radeon_ddc_probe(struct radeon_connector *radeon_connector, bool use_aux) ...@@ -64,8 +64,7 @@ bool radeon_ddc_probe(struct radeon_connector *radeon_connector, bool use_aux)
radeon_router_select_ddc_port(radeon_connector); radeon_router_select_ddc_port(radeon_connector);
if (use_aux) { if (use_aux) {
struct radeon_connector_atom_dig *dig = radeon_connector->con_priv; ret = i2c_transfer(&radeon_connector->ddc_bus->aux.ddc, msgs, 2);
ret = i2c_transfer(&dig->dp_i2c_bus->adapter, msgs, 2);
} else { } else {
ret = i2c_transfer(&radeon_connector->ddc_bus->adapter, msgs, 2); ret = i2c_transfer(&radeon_connector->ddc_bus->adapter, msgs, 2);
} }
...@@ -950,16 +949,16 @@ struct radeon_i2c_chan *radeon_i2c_create(struct drm_device *dev, ...@@ -950,16 +949,16 @@ struct radeon_i2c_chan *radeon_i2c_create(struct drm_device *dev,
/* set the radeon bit adapter */ /* set the radeon bit adapter */
snprintf(i2c->adapter.name, sizeof(i2c->adapter.name), snprintf(i2c->adapter.name, sizeof(i2c->adapter.name),
"Radeon i2c bit bus %s", name); "Radeon i2c bit bus %s", name);
i2c->adapter.algo_data = &i2c->algo.bit; i2c->adapter.algo_data = &i2c->bit;
i2c->algo.bit.pre_xfer = pre_xfer; i2c->bit.pre_xfer = pre_xfer;
i2c->algo.bit.post_xfer = post_xfer; i2c->bit.post_xfer = post_xfer;
i2c->algo.bit.setsda = set_data; i2c->bit.setsda = set_data;
i2c->algo.bit.setscl = set_clock; i2c->bit.setscl = set_clock;
i2c->algo.bit.getsda = get_data; i2c->bit.getsda = get_data;
i2c->algo.bit.getscl = get_clock; i2c->bit.getscl = get_clock;
i2c->algo.bit.udelay = 10; i2c->bit.udelay = 10;
i2c->algo.bit.timeout = usecs_to_jiffies(2200); /* from VESA */ i2c->bit.timeout = usecs_to_jiffies(2200); /* from VESA */
i2c->algo.bit.data = i2c; i2c->bit.data = i2c;
ret = i2c_bit_add_bus(&i2c->adapter); ret = i2c_bit_add_bus(&i2c->adapter);
if (ret) { if (ret) {
DRM_ERROR("Failed to register bit i2c %s\n", name); DRM_ERROR("Failed to register bit i2c %s\n", name);
...@@ -974,46 +973,13 @@ struct radeon_i2c_chan *radeon_i2c_create(struct drm_device *dev, ...@@ -974,46 +973,13 @@ struct radeon_i2c_chan *radeon_i2c_create(struct drm_device *dev,
} }
struct radeon_i2c_chan *radeon_i2c_create_dp(struct drm_device *dev,
struct radeon_i2c_bus_rec *rec,
const char *name)
{
struct radeon_i2c_chan *i2c;
int ret;
i2c = kzalloc(sizeof(struct radeon_i2c_chan), GFP_KERNEL);
if (i2c == NULL)
return NULL;
i2c->rec = *rec;
i2c->adapter.owner = THIS_MODULE;
i2c->adapter.class = I2C_CLASS_DDC;
i2c->adapter.dev.parent = &dev->pdev->dev;
i2c->dev = dev;
snprintf(i2c->adapter.name, sizeof(i2c->adapter.name),
"Radeon aux bus %s", name);
i2c_set_adapdata(&i2c->adapter, i2c);
i2c->adapter.algo_data = &i2c->algo.dp;
i2c->algo.dp.aux_ch = radeon_dp_i2c_aux_ch;
i2c->algo.dp.address = 0;
ret = i2c_dp_aux_add_bus(&i2c->adapter);
if (ret) {
DRM_INFO("Failed to register i2c %s\n", name);
goto out_free;
}
return i2c;
out_free:
kfree(i2c);
return NULL;
}
void radeon_i2c_destroy(struct radeon_i2c_chan *i2c) void radeon_i2c_destroy(struct radeon_i2c_chan *i2c)
{ {
if (!i2c) if (!i2c)
return; return;
i2c_del_adapter(&i2c->adapter); i2c_del_adapter(&i2c->adapter);
if (i2c->has_aux)
drm_dp_aux_unregister_i2c_bus(&i2c->aux);
kfree(i2c); kfree(i2c);
} }
......
...@@ -187,12 +187,10 @@ struct radeon_pll { ...@@ -187,12 +187,10 @@ struct radeon_pll {
struct radeon_i2c_chan { struct radeon_i2c_chan {
struct i2c_adapter adapter; struct i2c_adapter adapter;
struct drm_device *dev; struct drm_device *dev;
union {
struct i2c_algo_bit_data bit; struct i2c_algo_bit_data bit;
struct i2c_algo_dp_aux_data dp;
} algo;
struct radeon_i2c_bus_rec rec; struct radeon_i2c_bus_rec rec;
struct drm_dp_aux aux; struct drm_dp_aux aux;
bool has_aux;
}; };
/* mostly for macs, but really any system without connector tables */ /* mostly for macs, but really any system without connector tables */
...@@ -440,7 +438,6 @@ struct radeon_encoder { ...@@ -440,7 +438,6 @@ struct radeon_encoder {
struct radeon_connector_atom_dig { struct radeon_connector_atom_dig {
uint32_t igp_lane_info; uint32_t igp_lane_info;
/* displayport */ /* displayport */
struct radeon_i2c_chan *dp_i2c_bus;
u8 dpcd[DP_RECEIVER_CAP_SIZE]; u8 dpcd[DP_RECEIVER_CAP_SIZE];
u8 dp_sink_type; u8 dp_sink_type;
int dp_clock; int dp_clock;
...@@ -702,8 +699,6 @@ extern void atombios_dig_transmitter_setup(struct drm_encoder *encoder, ...@@ -702,8 +699,6 @@ extern void atombios_dig_transmitter_setup(struct drm_encoder *encoder,
uint8_t lane_set); uint8_t lane_set);
extern void radeon_atom_ext_encoder_setup_ddc(struct drm_encoder *encoder); extern void radeon_atom_ext_encoder_setup_ddc(struct drm_encoder *encoder);
extern struct drm_encoder *radeon_get_external_encoder(struct drm_encoder *encoder); extern struct drm_encoder *radeon_get_external_encoder(struct drm_encoder *encoder);
extern int radeon_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode,
u8 write_byte, u8 *read_byte);
void radeon_atom_copy_swap(u8 *dst, u8 *src, u8 num_bytes, bool to_le); void radeon_atom_copy_swap(u8 *dst, u8 *src, u8 num_bytes, bool to_le);
extern void radeon_i2c_init(struct radeon_device *rdev); extern void radeon_i2c_init(struct radeon_device *rdev);
...@@ -715,9 +710,6 @@ extern void radeon_i2c_add(struct radeon_device *rdev, ...@@ -715,9 +710,6 @@ extern void radeon_i2c_add(struct radeon_device *rdev,
const char *name); const char *name);
extern struct radeon_i2c_chan *radeon_i2c_lookup(struct radeon_device *rdev, extern struct radeon_i2c_chan *radeon_i2c_lookup(struct radeon_device *rdev,
struct radeon_i2c_bus_rec *i2c_bus); struct radeon_i2c_bus_rec *i2c_bus);
extern struct radeon_i2c_chan *radeon_i2c_create_dp(struct drm_device *dev,
struct radeon_i2c_bus_rec *rec,
const char *name);
extern struct radeon_i2c_chan *radeon_i2c_create(struct drm_device *dev, extern struct radeon_i2c_chan *radeon_i2c_create(struct drm_device *dev,
struct radeon_i2c_bus_rec *rec, struct radeon_i2c_bus_rec *rec,
const char *name); const char *name);
......
...@@ -99,55 +99,73 @@ static void tegra_dpaux_read_fifo(struct tegra_dpaux *dpaux, u8 *buffer, ...@@ -99,55 +99,73 @@ static void tegra_dpaux_read_fifo(struct tegra_dpaux *dpaux, u8 *buffer,
static ssize_t tegra_dpaux_transfer(struct drm_dp_aux *aux, static ssize_t tegra_dpaux_transfer(struct drm_dp_aux *aux,
struct drm_dp_aux_msg *msg) struct drm_dp_aux_msg *msg)
{ {
unsigned long value = DPAUX_DP_AUXCTL_TRANSACTREQ;
unsigned long timeout = msecs_to_jiffies(250); unsigned long timeout = msecs_to_jiffies(250);
struct tegra_dpaux *dpaux = to_dpaux(aux); struct tegra_dpaux *dpaux = to_dpaux(aux);
unsigned long status; unsigned long status;
ssize_t ret = 0; ssize_t ret = 0;
u32 value;
if (msg->size < 1 || msg->size > 16) /* Tegra has 4x4 byte DP AUX transmit and receive FIFOs. */
if (msg->size > 16)
return -EINVAL; return -EINVAL;
tegra_dpaux_writel(dpaux, msg->address, DPAUX_DP_AUXADDR); /*
* Allow zero-sized messages only for I2C, in which case they specify
* address-only transactions.
*/
if (msg->size < 1) {
switch (msg->request & ~DP_AUX_I2C_MOT) {
case DP_AUX_I2C_WRITE:
case DP_AUX_I2C_READ:
value = DPAUX_DP_AUXCTL_CMD_ADDRESS_ONLY;
break;
default:
return -EINVAL;
}
} else {
/* For non-zero-sized messages, set the CMDLEN field. */
value = DPAUX_DP_AUXCTL_CMDLEN(msg->size - 1);
}
switch (msg->request & ~DP_AUX_I2C_MOT) { switch (msg->request & ~DP_AUX_I2C_MOT) {
case DP_AUX_I2C_WRITE: case DP_AUX_I2C_WRITE:
if (msg->request & DP_AUX_I2C_MOT) if (msg->request & DP_AUX_I2C_MOT)
value = DPAUX_DP_AUXCTL_CMD_MOT_WR; value |= DPAUX_DP_AUXCTL_CMD_MOT_WR;
else else
value = DPAUX_DP_AUXCTL_CMD_I2C_WR; value |= DPAUX_DP_AUXCTL_CMD_I2C_WR;
break; break;
case DP_AUX_I2C_READ: case DP_AUX_I2C_READ:
if (msg->request & DP_AUX_I2C_MOT) if (msg->request & DP_AUX_I2C_MOT)
value = DPAUX_DP_AUXCTL_CMD_MOT_RD; value |= DPAUX_DP_AUXCTL_CMD_MOT_RD;
else else
value = DPAUX_DP_AUXCTL_CMD_I2C_RD; value |= DPAUX_DP_AUXCTL_CMD_I2C_RD;
break; break;
case DP_AUX_I2C_STATUS: case DP_AUX_I2C_STATUS:
if (msg->request & DP_AUX_I2C_MOT) if (msg->request & DP_AUX_I2C_MOT)
value = DPAUX_DP_AUXCTL_CMD_MOT_RQ; value |= DPAUX_DP_AUXCTL_CMD_MOT_RQ;
else else
value = DPAUX_DP_AUXCTL_CMD_I2C_RQ; value |= DPAUX_DP_AUXCTL_CMD_I2C_RQ;
break; break;
case DP_AUX_NATIVE_WRITE: case DP_AUX_NATIVE_WRITE:
value = DPAUX_DP_AUXCTL_CMD_AUX_WR; value |= DPAUX_DP_AUXCTL_CMD_AUX_WR;
break; break;
case DP_AUX_NATIVE_READ: case DP_AUX_NATIVE_READ:
value = DPAUX_DP_AUXCTL_CMD_AUX_RD; value |= DPAUX_DP_AUXCTL_CMD_AUX_RD;
break; break;
default: default:
return -EINVAL; return -EINVAL;
} }
value |= DPAUX_DP_AUXCTL_CMDLEN(msg->size - 1); tegra_dpaux_writel(dpaux, msg->address, DPAUX_DP_AUXADDR);
tegra_dpaux_writel(dpaux, value, DPAUX_DP_AUXCTL); tegra_dpaux_writel(dpaux, value, DPAUX_DP_AUXCTL);
if ((msg->request & DP_AUX_I2C_READ) == 0) { if ((msg->request & DP_AUX_I2C_READ) == 0) {
...@@ -198,7 +216,7 @@ static ssize_t tegra_dpaux_transfer(struct drm_dp_aux *aux, ...@@ -198,7 +216,7 @@ static ssize_t tegra_dpaux_transfer(struct drm_dp_aux *aux,
break; break;
} }
if (msg->reply == DP_AUX_NATIVE_REPLY_ACK) { if ((msg->size > 0) && (msg->reply == DP_AUX_NATIVE_REPLY_ACK)) {
if (msg->request & DP_AUX_I2C_READ) { if (msg->request & DP_AUX_I2C_READ) {
size_t count = value & DPAUX_DP_AUXSTAT_REPLY_MASK; size_t count = value & DPAUX_DP_AUXSTAT_REPLY_MASK;
......
...@@ -32,6 +32,7 @@ ...@@ -32,6 +32,7 @@
#define DPAUX_DP_AUXCTL_CMD_I2C_RQ (2 << 12) #define DPAUX_DP_AUXCTL_CMD_I2C_RQ (2 << 12)
#define DPAUX_DP_AUXCTL_CMD_I2C_RD (1 << 12) #define DPAUX_DP_AUXCTL_CMD_I2C_RD (1 << 12)
#define DPAUX_DP_AUXCTL_CMD_I2C_WR (0 << 12) #define DPAUX_DP_AUXCTL_CMD_I2C_WR (0 << 12)
#define DPAUX_DP_AUXCTL_CMD_ADDRESS_ONLY (1 << 8)
#define DPAUX_DP_AUXCTL_CMDLEN(x) ((x) & 0xff) #define DPAUX_DP_AUXCTL_CMDLEN(x) ((x) & 0xff)
#define DPAUX_DP_AUXSTAT 0x31 #define DPAUX_DP_AUXSTAT 0x31
......
...@@ -456,6 +456,10 @@ struct drm_dp_aux_msg { ...@@ -456,6 +456,10 @@ struct drm_dp_aux_msg {
* transactions. The drm_dp_aux_register_i2c_bus() function registers an * transactions. The drm_dp_aux_register_i2c_bus() function registers an
* I2C adapter that can be passed to drm_probe_ddc(). Upon removal, drivers * I2C adapter that can be passed to drm_probe_ddc(). Upon removal, drivers
* should call drm_dp_aux_unregister_i2c_bus() to remove the I2C adapter. * should call drm_dp_aux_unregister_i2c_bus() to remove the I2C adapter.
*
* Note that the aux helper code assumes that the .transfer() function
* only modifies the reply field of the drm_dp_aux_msg structure. The
* retry logic and i2c helpers assume this is the case.
*/ */
struct drm_dp_aux { struct drm_dp_aux {
const char *name; const char *name;
......
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