linux.git/drivers/video/omap2, branch v3.0.39

OMAPDSS: HDMI: PHY burnout fix

2012-03-12T17:32:59+00:00

commit c49d005b6cc8491fad5b24f82805be2d6bcbd3dd upstream.

A hardware bug in the OMAP4 HDMI PHY causes physical damage to the board
if the HDMI PHY is kept powered on when the cable is not connected.

This patch solves the problem by adding hot-plug-detection into the HDMI
IP driver. This is not a real HPD support in the sense that nobody else
than the IP driver gets to know about the HPD events, but is only meant
to fix the HW bug.

The strategy is simple: If the display device is turned off by the user,
the PHY power is set to OFF. When the display device is turned on by the
user, the PHY power is set either to LDOON or TXON, depending on whether
the HDMI cable is connected.

The reason to avoid PHY OFF when the display device is on, but the cable
is disconnected, is that when the PHY is turned OFF, the HDMI IP is not
"ticking" and thus the DISPC does not receive pixel clock from the HDMI
IP. This would, for example, prevent any VSYNCs from happening, and
would thus affect the users of omapdss. By using LDOON when the cable is
disconnected we'll avoid the HW bug, but keep the HDMI working as usual
from the user's point of view.

Signed-off-by: Tomi Valkeinen 
Signed-off-by: Greg Kroah-Hartman

OMAP: DSS2: HDMI: use default dividers

2012-03-12T17:32:58+00:00

commit 8d88767a4377171752c22ac39bcb2b505eb751da upstream.

Use default regn and regm2 dividers in the hdmi driver if the board file
does not define them.

Cc: Mythri P K 
Acked-by: Tony Lindgren 
Signed-off-by: Tomi Valkeinen 
Signed-off-by: Greg Kroah-Hartman

OMAP: DSS2: Add support for NV12 format

2011-05-23T05:29:47+00:00

Add the support for NV12 color format.
Configure base address for UV component of NV12 color format.
Change the way chroma scaling is handled for YUV formats on OMAP4 by enabling
chroma-resampling for video pipeline and hence using FIR2 register set for
scaling UV.
Changes to _dispc_set_scaling(), because of the reason above, are:
- call _dispc_set_scaling_common() to handle scaling for all color formats
  except for OMAP4 where it only handles scaling for RGB or Y-component
- call _dispc_set_scaling_uv() for special handling required for UV
  component on OMAP4.
- dispc_set_scaling_uv() also resets chroma-resampling bit for RGB color modes.

Contains chroma scaling (_dispc_set_scaling_uv) design and implemented by
Lajos Molnar 

Signed-off-by: Amber Jain 
Signed-off-by: Tomi Valkeinen

OMAP: DSS2: Add new registers for NV12 support

2011-05-23T05:29:47+00:00

Add new registers specific to UV color component that are introduced in OMAP4.
Add simple helper functions to configure the newly added registers.
These new registers are mainly:
- UV base address registers used specifically for NV12 color-format
- FIR registers used for UV-color-component scaling on OMAP4
- Accumulator registers used for UV-color-component scaling
Add these new registers to save/restore and DUMPREG functions.
Also add two new features for OMAP4:
- FEAT_HANDLE_UV_SEPARATE - this is used on OMAP4 as UV color-component requires
  separate handling.
- FEAT_ATTR2 - this is used on OMAP4 to configure new ATTRIBUTES2 register.

Signed-off-by: Amber Jain 
Signed-off-by: Tomi Valkeinen

OMAP: DSS2: Use for loop where ever possible in SR(), RR()

2011-05-23T05:29:47+00:00

Use for loop instead of individual entries for OVL_FIR_COEF_H, OVL_FIR_COEF_HV,
OVL_FIR_COEF_V and OVL_CONV_COEF in SR() and  RR().

Signed-off-by: Amber Jain 
Signed-off-by: Tomi Valkeinen

OMAP: DSS2: Ensure non-zero FIR values are configured

2011-05-23T05:29:47+00:00

FIR values can never be zero as per TRM, and the current code writes zero
when scaling is not used. It was not causing any problem as scaling was
disabled when zero was written. Its still safer to not write zero to
it in any case.
Now we configure correct FIR values even when scaling is not used (i.e. set FIR
to 1024 when scaling is not used), but the scaling enable bits are still kept
off if the scaling is not needed.

Signed-off-by: Amber Jain 
Signed-off-by: Tomi Valkeinen

OMAP: DSS2: Add new color formats for OMAP4

2011-05-23T05:29:47+00:00

Add new color formats supported by OMAP4: NV12, RGBA16, RGBX16,
ARGB16_1555, XRGB16_1555.
NV12 color format is defined here, its support in DSS will be added separately.

Signed-off-by: Amber Jain 
Signed-off-by: Tomi Valkeinen

OMAP4: DSS2: HDMI: Implement ASoC Codec driver for HDMI audio

2011-05-19T12:18:08+00:00

Implement an ASoC Codec Driver to handle audio configuration. The
implementation offers an interface for audio configuration and
control to be exposed to ALSA while hidding the HDMI details.

The ASoC driver supports the Basic Audio configuration as described
in CEA-861-D: 2-channel linear PCM with 32, 44.1 and 48kHz sample
rates and 16 bits/sample. It additionally supports 24 bit/sample
in 32-bit words.

Signed-off-by: Ricardo Neri 
Signed-off-by: Tomi Valkeinen

OMAP4: DSS2: HDMI: Add functionality for audio configuration

2011-05-19T12:18:04+00:00

Add functionality for relevant audio configuration. Functions to
configure the audio FIFO and DMA as well as functions for the audio
core and Audio Info frame are included. This functionality is to
be used by the ASoC HDMI audio codec.

Signed-off-by: Ricardo Neri 
Signed-off-by: Tomi Valkeinen

OMAP4: DSS2: HDMI: Add enums and structures for audio

2011-05-19T12:18:00+00:00

Add enurations and structures for audio configuration. This includes
enumerations for the Audio InfoFrame, I2S, audio FIFO and audio core.

Signed-off-by: Ricardo Neri 
Signed-off-by: Tomi Valkeinen