diff options
| author | Ben Skeggs <bskeggs@redhat.com> | 2010-11-11 16:14:56 +1000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2010-12-03 15:11:45 +1000 |
| commit | fce2bad0ee2666d6a10bfeb634b1021469cc3d79 (patch) | |
| tree | bc66c771c5c27dcd3b59135fb25c39c342ffed71 /drivers/gpu/drm/nouveau/nouveau_dp.c | |
| parent | e4cbadcaaa4678020e37ca93502942ffdf9aef80 (diff) | |
drm/nv50: rework PGPIO IRQ handling and hotplug detection
Allows callers to install their own handlers for when a GPIO line
changes state (such as for hotplug detect).
This also fixes a bug where we weren't acknowledging the GPIO IRQ
until after the bottom half had run, causing a severe IRQ storm
in some cases.
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_dp.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_dp.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_dp.c b/drivers/gpu/drm/nouveau/nouveau_dp.c index 4562f309ae3..38d599554bc 100644 --- a/drivers/gpu/drm/nouveau/nouveau_dp.c +++ b/drivers/gpu/drm/nouveau/nouveau_dp.c @@ -279,7 +279,7 @@ nouveau_dp_link_train(struct drm_encoder *encoder) struct bit_displayport_encoder_table *dpe; int dpe_headerlen; uint8_t config[4], status[3]; - bool cr_done, cr_max_vs, eq_done; + bool cr_done, cr_max_vs, eq_done, hpd_state; int ret = 0, i, tries, voltage; NV_DEBUG_KMS(dev, "link training!!\n"); @@ -297,7 +297,7 @@ nouveau_dp_link_train(struct drm_encoder *encoder) /* disable hotplug detect, this flips around on some panels during * link training. */ - pgpio->irq_enable(dev, nv_connector->dcb->gpio_tag, false); + hpd_state = pgpio->irq_enable(dev, nv_connector->dcb->gpio_tag, false); if (dpe->script0) { NV_DEBUG_KMS(dev, "SOR-%d: running DP script 0\n", nv_encoder->or); @@ -439,7 +439,7 @@ stop: } /* re-enable hotplug detect */ - pgpio->irq_enable(dev, nv_connector->dcb->gpio_tag, true); + pgpio->irq_enable(dev, nv_connector->dcb->gpio_tag, hpd_state); return eq_done; } |