diff options
| author | Dave Airlie <airlied@redhat.com> | 2009-12-08 00:07:28 +0300 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2009-12-08 03:22:31 +0300 |
| commit | 746c1aa4d100f7441423050f34be79f401fbf7d4 (patch) | |
| tree | 23e021bb2e9250fd03e88875b1715039f1d3da8a /drivers/gpu/drm/radeon/radeon_i2c.c | |
| parent | d904ef9b00a4473af16766e99f17bdbb5f0fde65 (diff) | |
| download | linux-746c1aa4d100f7441423050f34be79f401fbf7d4.tar.xz | |
drm/radeon/kms: initial radeon displayport porting
This is enough to retrieve EDID and DPCP.
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 | 50 |
1 files changed, 40 insertions, 10 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_i2c.c b/drivers/gpu/drm/radeon/radeon_i2c.c index 6c645fb4dad8..f200312dd5df 100644 --- a/drivers/gpu/drm/radeon/radeon_i2c.c +++ b/drivers/gpu/drm/radeon/radeon_i2c.c @@ -172,20 +172,19 @@ struct radeon_i2c_chan *radeon_i2c_create(struct drm_device *dev, return NULL; i2c->adapter.owner = THIS_MODULE; - i2c->adapter.algo_data = &i2c->algo; i2c->dev = dev; - i2c->algo.setsda = set_data; - i2c->algo.setscl = set_clock; - i2c->algo.getsda = get_data; - i2c->algo.getscl = get_clock; - i2c->algo.udelay = 20; + i2c_set_adapdata(&i2c->adapter, i2c); + i2c->adapter.algo_data = &i2c->algo.bit; + i2c->algo.bit.setsda = set_data; + i2c->algo.bit.setscl = set_clock; + i2c->algo.bit.getsda = get_data; + i2c->algo.bit.getscl = get_clock; + i2c->algo.bit.udelay = 20; /* vesa says 2.2 ms is enough, 1 jiffy doesn't seem to always * make this, 2 jiffies is a lot more reliable */ - i2c->algo.timeout = 2; - i2c->algo.data = i2c; + i2c->algo.bit.timeout = 2; + i2c->algo.bit.data = i2c; i2c->rec = *rec; - i2c_set_adapdata(&i2c->adapter, i2c); - ret = i2c_bit_add_bus(&i2c->adapter); if (ret) { DRM_INFO("Failed to register i2c %s\n", name); @@ -199,6 +198,37 @@ out_free: } +struct radeon_i2c_chan *radeon_i2c_create_dp(struct drm_device *dev, + const char *name, bool dp, u8 i2c_id) +{ + struct radeon_i2c_chan *i2c; + int ret; + + i2c = kzalloc(sizeof(struct radeon_i2c_chan), GFP_KERNEL); + if (i2c == NULL) + return NULL; + + i2c->i2c_id = i2c_id; + i2c->adapter.owner = THIS_MODULE; + i2c->dev = dev; + 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) { if (!i2c) |