diff options
| author | Alex Deucher <alexdeucher@gmail.com> | 2010-11-08 16:08:29 +0000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2010-11-09 13:43:32 +1000 |
| commit | fb939dfcf2a3a70357000617799925b6a11f9348 (patch) | |
| tree | 7b307b6edbd6e6c6f7b8a93a9fc95e1d87abcc8f /drivers/gpu/drm/radeon/radeon_i2c.c | |
| parent | dccb2a952b1f0b51978fcb3f9899c7f46ffd4b28 (diff) | |
| download | blackbird-op-linux-fb939dfcf2a3a70357000617799925b6a11f9348.tar.gz blackbird-op-linux-fb939dfcf2a3a70357000617799925b6a11f9348.zip | |
drm/radeon/kms: add support for clock/data path routers
This is a follow on to:
26b5bc986423cf3887e09188cb662ed651c5374d
(drm/radeon/kms: add support for router objects)
That patch added support for systems that use a mux to control
the ddc line routing between the connectors. This patch adds
support for systems that use a mux to control the encoder
clock and data path routing to the connectors.
Should fix:
https://bugs.freedesktop.org/show_bug.cgi?id=31339
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_i2c.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_i2c.c | 41 |
1 files changed, 33 insertions, 8 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_i2c.c b/drivers/gpu/drm/radeon/radeon_i2c.c index 6a13ee38a5b9..24b8a8be2cd4 100644 --- a/drivers/gpu/drm/radeon/radeon_i2c.c +++ b/drivers/gpu/drm/radeon/radeon_i2c.c @@ -53,8 +53,8 @@ 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); + if (radeon_connector->router.ddc_valid) + radeon_router_select_ddc_port(radeon_connector); ret = i2c_transfer(&radeon_connector->ddc_bus->adapter, msgs, 2); if (ret == 2) @@ -1084,26 +1084,51 @@ 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) +/* ddc router switching */ +void radeon_router_select_ddc_port(struct radeon_connector *radeon_connector) { u8 val; - if (!radeon_connector->router.valid) + if (!radeon_connector->router.ddc_valid) return; radeon_i2c_get_byte(radeon_connector->router_bus, radeon_connector->router.i2c_addr, 0x3, &val); - val &= radeon_connector->router.mux_control_pin; + val &= radeon_connector->router.ddc_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; + val &= radeon_connector->router.ddc_mux_control_pin; + val |= radeon_connector->router.ddc_mux_state; + radeon_i2c_put_byte(radeon_connector->router_bus, + radeon_connector->router.i2c_addr, + 0x1, val); +} + +/* clock/data router switching */ +void radeon_router_select_cd_port(struct radeon_connector *radeon_connector) +{ + u8 val; + + if (!radeon_connector->router.cd_valid) + return; + + radeon_i2c_get_byte(radeon_connector->router_bus, + radeon_connector->router.i2c_addr, + 0x3, &val); + val &= radeon_connector->router.cd_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.cd_mux_control_pin; + val |= radeon_connector->router.cd_mux_state; radeon_i2c_put_byte(radeon_connector->router_bus, radeon_connector->router.i2c_addr, 0x1, val); |
