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drm/nouveau: disable hotplug detect around DP link training

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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2010-07-23 11:39:03 +10:00
parent d0875edd93
commit b01f06085e
1 changed files with 15 additions and 0 deletions
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15
drivers/gpu/drm/nouveau/nouveau_dp.c
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@ -23,8 +23,10 @@
*/
#include "drmP.h"
#include "nouveau_drv.h"
#include "nouveau_i2c.h"
#include "nouveau_connector.h"
#include "nouveau_encoder.h"
static int
@ -271,6 +273,7 @@ nouveau_dp_link_train(struct drm_encoder *encoder)
{
struct drm_device *dev = encoder->dev;
struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
struct nouveau_connector *nv_connector;
struct bit_displayport_encoder_table *dpe;
int dpe_headerlen;
uint8_t config[4], status[3];
@ -279,12 +282,21 @@ nouveau_dp_link_train(struct drm_encoder *encoder)
NV_DEBUG_KMS(dev, "link training!!\n");
nv_connector = nouveau_encoder_connector_get(nv_encoder);
if (!nv_connector)
return false;
dpe = nouveau_bios_dp_table(dev, nv_encoder->dcb, &dpe_headerlen);
if (!dpe) {
NV_ERROR(dev, "SOR-%d: no DP encoder table!\n", nv_encoder->or);
return false;
}
/* disable hotplug detect, this flips around on some panels during
* link training.
*/
nv50_gpio_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);
nouveau_bios_run_init_table(dev, le16_to_cpu(dpe->script0),
@ -423,6 +435,9 @@ stop:
nv_encoder->dcb);
}
/* re-enable hotplug detect */
nv50_gpio_irq_enable(dev, nv_connector->dcb->gpio_tag, true);
return eq_done;
}