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authorDave Airlie <airlied@redhat.com>2009-12-08 00:07:28 +0300
committerDave Airlie <airlied@redhat.com>2009-12-08 03:22:31 +0300
commit746c1aa4d100f7441423050f34be79f401fbf7d4 (patch)
tree23e021bb2e9250fd03e88875b1715039f1d3da8a /drivers/gpu/drm/radeon/radeon_i2c.c
parentd904ef9b00a4473af16766e99f17bdbb5f0fde65 (diff)
downloadlinux-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.c50
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)