On Tue, 23 Jun 2015, Andreas Lampersperger
<lampersperger.andr...@heidenhain.de> wrote:
> When the i915.ko identify an eDP output on a valleyview
> board, it should be more slackly. The reason for that is,
> that BIOS DATA TABLES generated with intel BMP (Binary
> Modification Program) do not set bits for NOT_HDMI or
> DIGITAL_OUTPUT on the device type. Due to Adolfo
> Sanchez from Intel EMGD, this is not possible.
> To solve this problem and enable i915.ko on embedded
> vlv boards with eDP, we ignore this two bits.
Going through some old patches, this should be fixed by
commit 972e7d71c82ea70100b808695d5cf735c1df5ef8
Author: Ville Syrjälä <ville.syrj...@linux.intel.com>
Date: Fri Sep 11 21:04:39 2015 +0300
drm/i915: Ignore "digital output" and "not HDMI output" bits for eDP
detection
BR,
Jani.
>
> Signed-off-by: Andreas Lampersperger <lampersperger.andr...@heidenhain.de>
> ---
> drivers/gpu/drm/i915/intel_bios.h | 10 ++++++++++
> drivers/gpu/drm/i915/intel_dp.c | 10 ++++++++--
> 2 files changed, 18 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_bios.h
> b/drivers/gpu/drm/i915/intel_bios.h
> index af0b476..c42161f 100644
> --- a/drivers/gpu/drm/i915/intel_bios.h
> +++ b/drivers/gpu/drm/i915/intel_bios.h
> @@ -742,6 +742,16 @@ int intel_parse_bios(struct drm_device *dev);
> DEVICE_TYPE_DIGITAL_OUTPUT | \
> DEVICE_TYPE_ANALOG_OUTPUT)
>
> +/*
> + * We dont look on DEVICE_TYPE_NOT_HDMI_OUTPUT an DEVICE_TYPE_DIGITAL_OUTPUT
> + * on valleyview, because intels BMP-generated BIOS don't sets these
> + * BITS for eDP ports
> + */
> +#define DEVICE_TYPE_eDP_BITS_VLV \
> + (DEVICE_TYPE_eDP_BITS &\
> + (~ DEVICE_TYPE_NOT_HDMI_OUTPUT ) &\
> + (~ DEVICE_TYPE_DIGITAL_OUTPUT ) )
> +
> /* define the DVO port for HDMI output type */
> #define DVO_B 1
> #define DVO_C 2
> diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
> index f52eef1..51c753f 100644
> --- a/drivers/gpu/drm/i915/intel_dp.c
> +++ b/drivers/gpu/drm/i915/intel_dp.c
> @@ -5036,6 +5036,7 @@ bool intel_dp_is_edp(struct drm_device *dev, enum port
> port)
> struct drm_i915_private *dev_priv = dev->dev_private;
> union child_device_config *p_child;
> int i;
> + u16 eDP_bits;
> static const short port_mapping[] = {
> [PORT_B] = PORT_IDPB,
> [PORT_C] = PORT_IDPC,
> @@ -5047,13 +5048,18 @@ bool intel_dp_is_edp(struct drm_device *dev, enum
> port port)
>
> if (!dev_priv->vbt.child_dev_num)
> return false;
> +
> + if (IS_VALLEYVIEW(dev))
> + eDP_bits = DEVICE_TYPE_eDP_BITS_VLV;
> + else
> + eDP_bits = DEVICE_TYPE_eDP_BITS;
>
> for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
> p_child = dev_priv->vbt.child_dev + i;
>
> if (p_child->common.dvo_port == port_mapping[port] &&
> - (p_child->common.device_type & DEVICE_TYPE_eDP_BITS) ==
> - (DEVICE_TYPE_eDP & DEVICE_TYPE_eDP_BITS))
> + (p_child->common.device_type & eDP_bits) ==
> + (DEVICE_TYPE_eDP & eDP_bits))
> return true;
> }
> return false;
> --
> 2.1.4
>
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx
--
Jani Nikula, Intel Open Source Technology Center
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/intel-gfx
