diff options
| author | Ingo Molnar <mingo@kernel.org> | 2012-04-14 13:18:27 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2012-04-14 13:19:04 +0200 |
| commit | 6ac1ef482d7ae0c690f1640bf6eb818ff9a2d91e (patch) | |
| tree | 021cc9f6b477146fcebe6f3be4752abfa2ba18a9 /drivers/gpu/drm/radeon/radeon_i2c.c | |
| parent | 682968e0c425c60f0dde37977e5beb2b12ddc4cc (diff) | |
| parent | a385ec4f11bdcf81af094c03e2444ee9b7fad2e5 (diff) | |
Merge branch 'perf/core' into perf/uprobes
Merge in latest upstream (and the latest perf development tree),
to prepare for tooling changes, and also to pick up v3.4 MM
changes that the uprobes code needs to take care of.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_i2c.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_i2c.c | 32 |
1 files changed, 26 insertions, 6 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_i2c.c b/drivers/gpu/drm/radeon/radeon_i2c.c index 98a8ad68010..85bcfc8923a 100644 --- a/drivers/gpu/drm/radeon/radeon_i2c.c +++ b/drivers/gpu/drm/radeon/radeon_i2c.c @@ -26,10 +26,15 @@ #include <linux/export.h> #include "drmP.h" +#include "drm_edid.h" #include "radeon_drm.h" #include "radeon.h" #include "atom.h" +extern int radeon_atom_hw_i2c_xfer(struct i2c_adapter *i2c_adap, + struct i2c_msg *msgs, int num); +extern u32 radeon_atom_hw_i2c_func(struct i2c_adapter *adap); + /** * radeon_ddc_probe * @@ -41,13 +46,13 @@ bool radeon_ddc_probe(struct radeon_connector *radeon_connector) int ret; struct i2c_msg msgs[] = { { - .addr = 0x50, + .addr = DDC_ADDR, .flags = 0, .len = 1, .buf = &out, }, { - .addr = 0x50, + .addr = DDC_ADDR, .flags = I2C_M_RD, .len = 8, .buf = buf, @@ -882,6 +887,11 @@ static const struct i2c_algorithm radeon_i2c_algo = { .functionality = radeon_hw_i2c_func, }; +static const struct i2c_algorithm radeon_atom_i2c_algo = { + .master_xfer = radeon_atom_hw_i2c_xfer, + .functionality = radeon_atom_hw_i2c_func, +}; + struct radeon_i2c_chan *radeon_i2c_create(struct drm_device *dev, struct radeon_i2c_bus_rec *rec, const char *name) @@ -914,6 +924,18 @@ struct radeon_i2c_chan *radeon_i2c_create(struct drm_device *dev, DRM_ERROR("Failed to register hw i2c %s\n", name); goto out_free; } + } else if (rec->hw_capable && + radeon_hw_i2c && + ASIC_IS_DCE3(rdev)) { + /* hw i2c using atom */ + snprintf(i2c->adapter.name, sizeof(i2c->adapter.name), + "Radeon i2c hw bus %s", name); + i2c->adapter.algo = &radeon_atom_i2c_algo; + ret = i2c_add_adapter(&i2c->adapter); + if (ret) { + DRM_ERROR("Failed to register hw i2c %s\n", name); + goto out_free; + } } else { /* set the radeon bit adapter */ snprintf(i2c->adapter.name, sizeof(i2c->adapter.name), @@ -925,10 +947,8 @@ struct radeon_i2c_chan *radeon_i2c_create(struct drm_device *dev, 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.bit.timeout = 2; + i2c->algo.bit.udelay = 10; + i2c->algo.bit.timeout = usecs_to_jiffies(2200); /* from VESA */ i2c->algo.bit.data = i2c; ret = i2c_bit_add_bus(&i2c->adapter); if (ret) { |