From fb939dfcf2a3a70357000617799925b6a11f9348 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Mon, 8 Nov 2010 16:08:29 +0000 Subject: 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 Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/radeon_i2c.c | 41 +++++++++++++++++++++++++++++-------- 1 file changed, 33 insertions(+), 8 deletions(-) (limited to 'drivers/gpu/drm/radeon/radeon_i2c.c') diff --git a/drivers/gpu/drm/radeon/radeon_i2c.c b/drivers/gpu/drm/radeon/radeon_i2c.c index 6a13ee3..24b8a8b 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); -- cgit v1.1 From bdd91b2b571c80dacfca88667d935f9907e62931 Mon Sep 17 00:00:00 2001 From: Tyson Whitehead Date: Mon, 8 Nov 2010 16:08:30 +0000 Subject: drm/radeon/kms: fix bugs in ddc and cd path router code This is a follow on to: 2b5b1d7da9583484b3a9e7e375a90ca0e8ca07c2 (drm/radeon/kms: add support for clock/data path routers) That patch completed mux support for ddc and cd line routing between connectors. This patch fixes an indexing typo that was resulting in the atom bios router objects not always being walked, ensures the validity entries for the reused router structure are reset for every connector object walked, and corrects the masking operations used to update the mux control bits. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=31339 Signed-off-by: Tyson Whitehead Signed-off-by: Alex Deucher Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/radeon_i2c.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers/gpu/drm/radeon/radeon_i2c.c') diff --git a/drivers/gpu/drm/radeon/radeon_i2c.c b/drivers/gpu/drm/radeon/radeon_i2c.c index 24b8a8b..0cfbba0 100644 --- a/drivers/gpu/drm/radeon/radeon_i2c.c +++ b/drivers/gpu/drm/radeon/radeon_i2c.c @@ -1095,14 +1095,14 @@ void radeon_router_select_ddc_port(struct radeon_connector *radeon_connector) radeon_i2c_get_byte(radeon_connector->router_bus, radeon_connector->router.i2c_addr, 0x3, &val); - val &= radeon_connector->router.ddc_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.ddc_mux_control_pin; + 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, @@ -1120,14 +1120,14 @@ void radeon_router_select_cd_port(struct radeon_connector *radeon_connector) radeon_i2c_get_byte(radeon_connector->router_bus, radeon_connector->router.i2c_addr, 0x3, &val); - val &= radeon_connector->router.cd_mux_control_pin; + 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_control_pin; val |= radeon_connector->router.cd_mux_state; radeon_i2c_put_byte(radeon_connector->router_bus, radeon_connector->router.i2c_addr, -- cgit v1.1 From a5193fe50e7f21c26d22c17c8196420fac1a3ca7 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Wed, 17 Nov 2010 17:56:49 -0500 Subject: drm/radeon/kms: register an i2c adapter name for the dp aux bus This causes the connector to not be added since i2c init fails for the adapter. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=31688 Noticed by Ari Savolainen. Signed-off-by: Alex Deucher Cc: Ari Savolainen Cc: Jean Delvare Cc: stable@kernel.org Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/radeon_i2c.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/gpu/drm/radeon/radeon_i2c.c') diff --git a/drivers/gpu/drm/radeon/radeon_i2c.c b/drivers/gpu/drm/radeon/radeon_i2c.c index 0cfbba0..d263bd1 100644 --- a/drivers/gpu/drm/radeon/radeon_i2c.c +++ b/drivers/gpu/drm/radeon/radeon_i2c.c @@ -946,6 +946,7 @@ struct radeon_i2c_chan *radeon_i2c_create_dp(struct drm_device *dev, i2c->rec = *rec; i2c->adapter.owner = THIS_MODULE; i2c->dev = dev; + sprintf(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; -- cgit v1.1 From 164bcb94bc821fcbac752e809b4ac7c6f15d13b5 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Thu, 18 Nov 2010 11:37:18 -0500 Subject: drm/radeon/kms: i2c s/sprintf/snprintf/g for safety As per advice from Jean Delvare. Signed-off-by: Alex Deucher Acked-by: Jean Delvare Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/radeon_i2c.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'drivers/gpu/drm/radeon/radeon_i2c.c') diff --git a/drivers/gpu/drm/radeon/radeon_i2c.c b/drivers/gpu/drm/radeon/radeon_i2c.c index d263bd1..ded2a45 100644 --- a/drivers/gpu/drm/radeon/radeon_i2c.c +++ b/drivers/gpu/drm/radeon/radeon_i2c.c @@ -896,7 +896,8 @@ struct radeon_i2c_chan *radeon_i2c_create(struct drm_device *dev, ((rdev->family <= CHIP_RS480) || ((rdev->family >= CHIP_RV515) && (rdev->family <= CHIP_R580))))) { /* set the radeon hw i2c adapter */ - sprintf(i2c->adapter.name, "Radeon i2c hw bus %s", name); + snprintf(i2c->adapter.name, sizeof(i2c->adapter.name), + "Radeon i2c hw bus %s", name); i2c->adapter.algo = &radeon_i2c_algo; ret = i2c_add_adapter(&i2c->adapter); if (ret) { @@ -905,7 +906,8 @@ struct radeon_i2c_chan *radeon_i2c_create(struct drm_device *dev, } } else { /* set the radeon bit adapter */ - sprintf(i2c->adapter.name, "Radeon i2c bit bus %s", name); + snprintf(i2c->adapter.name, sizeof(i2c->adapter.name), + "Radeon i2c bit bus %s", name); i2c->adapter.algo_data = &i2c->algo.bit; i2c->algo.bit.pre_xfer = pre_xfer; i2c->algo.bit.post_xfer = post_xfer; @@ -946,7 +948,8 @@ struct radeon_i2c_chan *radeon_i2c_create_dp(struct drm_device *dev, i2c->rec = *rec; i2c->adapter.owner = THIS_MODULE; i2c->dev = dev; - sprintf(i2c->adapter.name, "Radeon aux bus %s", name); + 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; -- cgit v1.1