router objects are found on systems that use a mux to control
ddc line to connector routing or to control the actual clock and data
routing from the chip to the connectors. This patch implements ddc line
routing.
Signed-off-by: Alex Deucher <alexdeuc...@gmail.com>
---
drivers/gpu/drm/radeon/radeon_atombios.c | 94 +++++++++++++++++++++++----
drivers/gpu/drm/radeon/radeon_connectors.c | 14 ++++-
drivers/gpu/drm/radeon/radeon_display.c | 12 ++++
drivers/gpu/drm/radeon/radeon_i2c.c | 29 +++++++++
drivers/gpu/drm/radeon/radeon_mode.h | 13 ++++
5 files changed, 147 insertions(+), 15 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c
b/drivers/gpu/drm/radeon/radeon_atombios.c
index 7851008..6d30868 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -48,7 +48,8 @@ radeon_add_atom_connector(struct drm_device *dev,
struct radeon_i2c_bus_rec *i2c_bus,
bool linkb, uint32_t igp_lane_info,
uint16_t connector_object_id,
- struct radeon_hpd *hpd);
+ struct radeon_hpd *hpd,
+ struct radeon_router *router);
/* from radeon_legacy_encoder.c */
extern void
@@ -470,13 +471,15 @@ bool
radeon_get_atom_connector_info_from_object_table(struct drm_device *dev)
u16 size, data_offset;
u8 frev, crev;
ATOM_CONNECTOR_OBJECT_TABLE *con_obj;
+ ATOM_OBJECT_TABLE *router_obj;
ATOM_DISPLAY_OBJECT_PATH_TABLE *path_obj;
ATOM_OBJECT_HEADER *obj_header;
- int i, j, path_size, device_support;
+ int i, j, k, path_size, device_support;
int connector_type;
u16 igp_lane_info, conn_id, connector_object_id;
bool linkb;
struct radeon_i2c_bus_rec ddc_bus;
+ struct radeon_router router;
struct radeon_gpio_rec gpio;
struct radeon_hpd hpd;
@@ -486,6 +489,8 @@ bool
radeon_get_atom_connector_info_from_object_table(struct drm_device *dev)
if (crev < 2)
return false;
+ router.valid = false;
+
obj_header = (ATOM_OBJECT_HEADER *) (ctx->bios + data_offset);
path_obj = (ATOM_DISPLAY_OBJECT_PATH_TABLE *)
(ctx->bios + data_offset +
@@ -493,6 +498,9 @@ bool
radeon_get_atom_connector_info_from_object_table(struct drm_device *dev)
con_obj = (ATOM_CONNECTOR_OBJECT_TABLE *)
(ctx->bios + data_offset +
le16_to_cpu(obj_header->usConnectorObjectTableOffset));
+ router_obj = (ATOM_OBJECT_TABLE *)
+ (ctx->bios + data_offset +
+ le16_to_cpu(obj_header->usRouterObjectTableOffset));
device_support = le16_to_cpu(obj_header->usDeviceSupport);
path_size = 0;
@@ -579,33 +587,86 @@ bool
radeon_get_atom_connector_info_from_object_table(struct drm_device *dev)
if (connector_type == DRM_MODE_CONNECTOR_Unknown)
continue;
- for (j = 0; j < ((le16_to_cpu(path->usSize) - 8) / 2);
- j++) {
- uint8_t enc_obj_id, enc_obj_num, enc_obj_type;
+ for (j = 0; j < ((le16_to_cpu(path->usSize) - 8) / 2);
j++) {
+ uint8_t grph_obj_id, grph_obj_num,
grph_obj_type;
- enc_obj_id =
+ grph_obj_id =
(le16_to_cpu(path->usGraphicObjIds[j]) &
OBJECT_ID_MASK) >> OBJECT_ID_SHIFT;
- enc_obj_num =
+ grph_obj_num =
(le16_to_cpu(path->usGraphicObjIds[j]) &
ENUM_ID_MASK) >> ENUM_ID_SHIFT;
- enc_obj_type =
+ grph_obj_type =
(le16_to_cpu(path->usGraphicObjIds[j]) &
OBJECT_TYPE_MASK) >> OBJECT_TYPE_SHIFT;
- /* FIXME: add support for router objects */
- if (enc_obj_type == GRAPH_OBJECT_TYPE_ENCODER) {
- if (enc_obj_num == 2)
+ if (grph_obj_type == GRAPH_OBJECT_TYPE_ENCODER)
{
+ if (grph_obj_num == 2)
linkb = true;
else
linkb = false;
radeon_add_atom_encoder(dev,
- enc_obj_id,
+ grph_obj_id,
le16_to_cpu
(path->
usDeviceTag));
+ } else if (grph_obj_type ==
GRAPH_OBJECT_TYPE_ROUTER) {
+ router.valid = false;
+ for (k = 0; k <
router_obj->ucNumberOfObjects; k++) {
+ u16 router_obj_id =
le16_to_cpu(router_obj->asObjects[j].usObjectID);
+ if
(le16_to_cpu(path->usGraphicObjIds[j]) == router_obj_id) {
+
ATOM_COMMON_RECORD_HEADER *record = (ATOM_COMMON_RECORD_HEADER *)
+ (ctx->bios +
data_offset +
+
le16_to_cpu(router_obj->asObjects[k].usRecordOffset));
+ ATOM_I2C_RECORD
*i2c_record;
+
ATOM_I2C_ID_CONFIG_ACCESS *i2c_config;
+
ATOM_ROUTER_DDC_PATH_SELECT_RECORD *ddc_path;
+
ATOM_SRC_DST_TABLE_FOR_ONE_OBJECT *router_src_dst_table =
+
(ATOM_SRC_DST_TABLE_FOR_ONE_OBJECT *)
+ (ctx->bios +
data_offset +
+
le16_to_cpu(router_obj->asObjects[k].usSrcDstTableOffset));
+ int enum_id;
+
+ router.router_id =
router_obj_id;
+ for (enum_id = 0;
enum_id < router_src_dst_table->ucNumberOfDst;
+ enum_id++) {
+ if
(le16_to_cpu(path->usConnObjectId) ==
+
le16_to_cpu(router_src_dst_table->usDstObjectID[enum_id]))
+ break;
+ }
+
+ while
(record->ucRecordType > 0 &&
+
record->ucRecordType <= ATOM_MAX_OBJECT_RECORD_NUMBER) {
+ switch
(record->ucRecordType) {
+ case
ATOM_I2C_RECORD_TYPE:
+
i2c_record =
+
(ATOM_I2C_RECORD *)
+
record;
+
i2c_config =
+
(ATOM_I2C_ID_CONFIG_ACCESS *)
+
&i2c_record->sucI2cId;
+
router.i2c_info =
+
radeon_lookup_i2c_gpio(rdev,
+
i2c_config->
+
ucAccess);
+
router.i2c_addr = i2c_record->ucI2CAddr >> 1;
+ break;
+ case
ATOM_ROUTER_DDC_PATH_SELECT_RECORD_TYPE:
+
ddc_path = (ATOM_ROUTER_DDC_PATH_SELECT_RECORD *)
+
record;
+
router.valid = true;
+
router.mux_type = ddc_path->ucMuxType;
+
router.mux_control_pin = ddc_path->ucMuxControlPin;
+
router.mux_state = ddc_path->ucMuxState[enum_id];
+ break;
+ }
+ record =
(ATOM_COMMON_RECORD_HEADER *)
+ ((char
*)record + record->ucRecordSize);
+ }
+ }
+ }
}
}
@@ -685,7 +746,8 @@ bool
radeon_get_atom_connector_info_from_object_table(struct drm_device *dev)
connector_type, &ddc_bus,
linkb, igp_lane_info,
connector_object_id,
- &hpd);
+ &hpd,
+ &router);
}
}
@@ -762,6 +824,9 @@ bool
radeon_get_atom_connector_info_from_supported_devices_table(struct
int i, j, max_device;
struct bios_connector *bios_connectors;
size_t bc_size = sizeof(*bios_connectors) * ATOM_MAX_SUPPORTED_DEVICE;
+ struct radeon_router router;
+
+ router.valid = false;
bios_connectors = kzalloc(bc_size, GFP_KERNEL);
if (!bios_connectors)
@@ -933,7 +998,8 @@ bool
radeon_get_atom_connector_info_from_supported_devices_table(struct
&bios_connectors[i].ddc_bus,
false, 0,
connector_object_id,
- &bios_connectors[i].hpd);
+ &bios_connectors[i].hpd,
+ &router);
}
}
diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c
b/drivers/gpu/drm/radeon/radeon_connectors.c
index 185a6d9..47c4b27 100644
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -1040,7 +1040,8 @@ radeon_add_atom_connector(struct drm_device *dev,
bool linkb,
uint32_t igp_lane_info,
uint16_t connector_object_id,
- struct radeon_hpd *hpd)
+ struct radeon_hpd *hpd,
+ struct radeon_router *router)
{
struct radeon_device *rdev = dev->dev_private;
struct drm_connector *connector;
@@ -1065,6 +1066,11 @@ radeon_add_atom_connector(struct drm_device *dev,
radeon_connector->shared_ddc = true;
shared_ddc = true;
}
+ if (radeon_connector->router_bus && router->valid &&
+ (radeon_connector->router.router_id ==
router->router_id)) {
+ radeon_connector->shared_ddc = false;
+ shared_ddc = false;
+ }
}
}
@@ -1079,6 +1085,12 @@ radeon_add_atom_connector(struct drm_device *dev,
radeon_connector->shared_ddc = shared_ddc;
radeon_connector->connector_object_id = connector_object_id;
radeon_connector->hpd = *hpd;
+ radeon_connector->router = *router;
+ if (router->valid) {
+ radeon_connector->router_bus = radeon_i2c_lookup(rdev,
&router->i2c_info);
+ if (!radeon_connector->router_bus)
+ goto failed;
+ }
switch (connector_type) {
case DRM_MODE_CONNECTOR_VGA:
drm_connector_init(dev, &radeon_connector->base,
&radeon_vga_connector_funcs, connector_type);
diff --git a/drivers/gpu/drm/radeon/radeon_display.c
b/drivers/gpu/drm/radeon/radeon_display.c
index 52ac08e..d49a148 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -319,6 +319,10 @@ static void radeon_print_display_setup(struct drm_device
*dev)
radeon_connector->ddc_bus->rec.en_data_reg,
radeon_connector->ddc_bus->rec.y_clk_reg,
radeon_connector->ddc_bus->rec.y_data_reg);
+ if (radeon_connector->router_bus)
+ DRM_INFO(" DDC Router 0x%x/0x%x\n",
+
radeon_connector->router.mux_control_pin,
+ radeon_connector->router.mux_state);
} else {
if (connector->connector_type == DRM_MODE_CONNECTOR_VGA
||
connector->connector_type ==
DRM_MODE_CONNECTOR_DVII ||
@@ -395,6 +399,10 @@ int radeon_ddc_get_modes(struct radeon_connector
*radeon_connector)
struct radeon_device *rdev = dev->dev_private;
int ret = 0;
+ /* on hw with routers, select right port */
+ if (radeon_connector->router.valid)
+ radeon_router_select_port(radeon_connector);
+
if ((radeon_connector->base.connector_type ==
DRM_MODE_CONNECTOR_DisplayPort) ||
(radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_eDP)) {
struct radeon_connector_atom_dig *dig =
radeon_connector->con_priv;
@@ -425,6 +433,10 @@ static int radeon_ddc_dump(struct drm_connector *connector)
struct radeon_connector *radeon_connector =
to_radeon_connector(connector);
int ret = 0;
+ /* on hw with routers, select right port */
+ if (radeon_connector->router.valid)
+ radeon_router_select_port(radeon_connector);
+
if (!radeon_connector->ddc_bus)
return -1;
edid = drm_get_edid(connector, &radeon_connector->ddc_bus->adapter);
diff --git a/drivers/gpu/drm/radeon/radeon_i2c.c
b/drivers/gpu/drm/radeon/radeon_i2c.c
index e71f2eb..bfd2ce5 100644
--- a/drivers/gpu/drm/radeon/radeon_i2c.c
+++ b/drivers/gpu/drm/radeon/radeon_i2c.c
@@ -52,6 +52,10 @@ bool radeon_ddc_probe(struct radeon_connector
*radeon_connector)
}
};
+ /* on hw with routers, select right port */
+ if (radeon_connector->router.valid)
+ radeon_router_select_port(radeon_connector);
+
ret = i2c_transfer(&radeon_connector->ddc_bus->adapter, msgs, 2);
if (ret == 2)
return true;
@@ -1073,3 +1077,28 @@ void radeon_i2c_put_byte(struct radeon_i2c_chan *i2c_bus,
addr, val);
}
+/* router switching */
+void radeon_router_select_port(struct radeon_connector *radeon_connector)
+{
+ u8 val;
+
+ if (!radeon_connector->router.valid)
+ return;
+
+ radeon_i2c_get_byte(radeon_connector->router_bus,
+ radeon_connector->router.i2c_addr,
+ 0x3, &val);
+ val &= radeon_connector->router.mux_control_pin;
+ radeon_i2c_put_byte(radeon_connector->router_bus,
+ radeon_connector->router.i2c_addr,
+ 0x3, val);
+ radeon_i2c_get_byte(radeon_connector->router_bus,
+ radeon_connector->router.i2c_addr,
+ 0x1, &val);
+ val &= radeon_connector->router.mux_control_pin;
+ val |= radeon_connector->router.mux_state;
+ radeon_i2c_put_byte(radeon_connector->router_bus,
+ radeon_connector->router.i2c_addr,
+ 0x1, val);
+}
+
diff --git a/drivers/gpu/drm/radeon/radeon_mode.h
b/drivers/gpu/drm/radeon/radeon_mode.h
index 02d4e2a..5bbc086 100644
--- a/drivers/gpu/drm/radeon/radeon_mode.h
+++ b/drivers/gpu/drm/radeon/radeon_mode.h
@@ -400,6 +400,16 @@ struct radeon_hpd {
struct radeon_gpio_rec gpio;
};
+struct radeon_router {
+ bool valid;
+ u32 router_id;
+ struct radeon_i2c_bus_rec i2c_info;
+ u8 i2c_addr;
+ u8 mux_type;
+ u8 mux_control_pin;
+ u8 mux_state;
+};
+
struct radeon_connector {
struct drm_connector base;
uint32_t connector_id;
@@ -415,6 +425,8 @@ struct radeon_connector {
bool dac_load_detect;
uint16_t connector_object_id;
struct radeon_hpd hpd;
+ struct radeon_router router;
+ struct radeon_i2c_chan *router_bus;
};
struct radeon_framebuffer {
@@ -471,6 +483,7 @@ extern void radeon_i2c_put_byte(struct radeon_i2c_chan *i2c,
u8 slave_addr,
u8 addr,
u8 val);
+extern void radeon_router_select_port(struct radeon_connector
*radeon_connector);
extern bool radeon_ddc_probe(struct radeon_connector *radeon_connector);
extern int radeon_ddc_get_modes(struct radeon_connector *radeon_connector);
--
1.7.1.1
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