summaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/radeon/radeon_i2c.c
diff options
context:
space:
mode:
authorAlex Deucher <alexdeucher@gmail.com>2009-11-23 17:39:28 -0500
committerDave Airlie <airlied@redhat.com>2009-12-08 10:22:41 +1000
commit6a93cb250a60af1bb7b4070949f8546a2fdc52ef (patch)
tree2c734dcc0a4c39ec5c626b17912845eae1448828 /drivers/gpu/drm/radeon/radeon_i2c.c
parent1a66c95a64c9ae0bc8382254f544b24b23f498ec (diff)
downloadop-kernel-dev-6a93cb250a60af1bb7b4070949f8546a2fdc52ef.zip
op-kernel-dev-6a93cb250a60af1bb7b4070949f8546a2fdc52ef.tar.gz
drm/radeon/kms: i2c reorg
- keep the atom i2c id in the i2c rec - fix gpio regs for GPIO and MDGPIO on pre-avivo chips - track whether the i2c line is hw capable - track whether the i2c line uses the multimedia i2c block Signed-off-by: Alex Deucher <alexdeucher@gmail.com> 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.c27
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 f200312..da3da1e 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);
OpenPOWER on IntegriCloud