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| author | Jesse Barnes | 2012-03-28 22:39:25 +0200 |
|---|---|---|
| committer | Daniel Vetter | 2012-03-28 23:52:31 +0200 |
| commit | 57f350b6722f9569f407872f6ead56e2d221d98a (patch) | |
| tree | e603a42f2af8a94fdfccf9f31b54435b2bdb037a /drivers/gpu/drm/i915/intel_drv.h | |
| parent | drm/i915: PLL defines for VLV (diff) | |
| download | kernel-qcow2-linux-57f350b6722f9569f407872f6ead56e2d221d98a.tar.gz kernel-qcow2-linux-57f350b6722f9569f407872f6ead56e2d221d98a.tar.xz kernel-qcow2-linux-57f350b6722f9569f407872f6ead56e2d221d98a.zip | |
drm/i915: add DPIO support
ValleyView puts some display related registers like the PLL controls and
dividers behind the DPIO bus. Add simple indirect register access
routines to get to those registers.
v2: move new wait_for macro to intel_drv.h (Ben)
fix DPIO_PKT double write (Ben)
add debugfs file
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_drv.h')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_drv.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 219efe3b9ad5..beee177dd41a 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -45,6 +45,18 @@ ret__; \ }) +#define wait_for_atomic_us(COND, US) ({ \ + int i, ret__ = -ETIMEDOUT; \ + for (i = 0; i < (US); i++) { \ + if ((COND)) { \ + ret__ = 0; \ + break; \ + } \ + udelay(1); \ + } \ + ret__; \ +}) + #define wait_for(COND, MS) _wait_for(COND, MS, 1) #define wait_for_atomic(COND, MS) _wait_for(COND, MS, 0) @@ -420,4 +432,6 @@ extern int intel_sprite_set_colorkey(struct drm_device *dev, void *data, extern int intel_sprite_get_colorkey(struct drm_device *dev, void *data, struct drm_file *file_priv); +extern u32 intel_dpio_read(struct drm_i915_private *dev_priv, int reg); + #endif /* __INTEL_DRV_H__ */ |