diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_i2c.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_i2c.c | 27 |
1 files changed, 18 insertions, 9 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_i2c.c b/drivers/gpu/drm/radeon/radeon_i2c.c index f200312dd5df..da3da1e89d00 100644 --- a/drivers/gpu/drm/radeon/radeon_i2c.c +++ b/drivers/gpu/drm/radeon/radeon_i2c.c @@ -69,13 +69,15 @@ void radeon_i2c_do_lock(struct radeon_i2c_chan *i2c, int lock_state) * holds the i2c port in a bad state - switch hw i2c away before * doing DDC - do this for all r200s/r300s/r400s for safety sake */ - if ((rdev->family >= CHIP_R200) && !ASIC_IS_AVIVO(rdev)) { - if (rec->a_clk_reg == RADEON_GPIO_MONID) { - WREG32(RADEON_DVI_I2C_CNTL_0, (RADEON_I2C_SOFT_RST | - R200_DVI_I2C_PIN_SEL(R200_SEL_DDC1))); - } else { - WREG32(RADEON_DVI_I2C_CNTL_0, (RADEON_I2C_SOFT_RST | - R200_DVI_I2C_PIN_SEL(R200_SEL_DDC3))); + if (rec->hw_capable) { + if ((rdev->family >= CHIP_R200) && !ASIC_IS_AVIVO(rdev)) { + if (rec->a_clk_reg == RADEON_GPIO_MONID) { + WREG32(RADEON_DVI_I2C_CNTL_0, (RADEON_I2C_SOFT_RST | + R200_DVI_I2C_PIN_SEL(R200_SEL_DDC1))); + } else { + WREG32(RADEON_DVI_I2C_CNTL_0, (RADEON_I2C_SOFT_RST | + R200_DVI_I2C_PIN_SEL(R200_SEL_DDC3))); + } } } @@ -86,6 +88,12 @@ void radeon_i2c_do_lock(struct radeon_i2c_chan *i2c, int lock_state) temp = RREG32(rec->a_data_reg) & ~rec->a_data_mask; WREG32(rec->a_data_reg, temp); + /* set the pins to input */ + temp = RREG32(rec->en_clk_reg) & ~rec->en_clk_mask; + WREG32(rec->en_clk_reg, temp); + + temp = RREG32(rec->en_data_reg) & ~rec->en_data_mask; + WREG32(rec->en_data_reg, temp); /* mask the gpio pins for software use */ temp = RREG32(rec->mask_clk_reg); @@ -199,7 +207,8 @@ 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_bus_rec *rec, + const char *name) { struct radeon_i2c_chan *i2c; int ret; @@ -208,7 +217,7 @@ struct radeon_i2c_chan *radeon_i2c_create_dp(struct drm_device *dev, if (i2c == NULL) return NULL; - i2c->i2c_id = i2c_id; + i2c->rec = *rec; i2c->adapter.owner = THIS_MODULE; i2c->dev = dev; i2c_set_adapdata(&i2c->adapter, i2c); |