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drm/i915/bios: interpret the i2c element

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Add parsing of the i2c element, defined in MIPI sequence block v2. Drop
the status operation byte while at it, that does not exist.

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/d8a2998977feee2f5b5ad609aaca787adfb41479.1450702954.git.jani.nikula@intel.com
This commit is contained in:
Jani Nikula 2015-12-21 15:11:00 +02:00
commit f4d64936af
2 changed files with 6 additions and 1 deletions
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5
drivers/gpu/drm/i915/intel_bios.c
View file

@ -812,6 +812,11 @@ static int goto_next_sequence(const u8 *data, int index, int total)
case MIPI_SEQ_ELEM_GPIO:
len = 2;
break;
case MIPI_SEQ_ELEM_I2C:
if (index + 7 > total)
return 0;
len = *(data + index + 6) + 7;
break;
default:
DRM_ERROR("Unknown operation byte\n");
return 0;

2
drivers/gpu/drm/i915/intel_bios.h
View file

@ -968,7 +968,7 @@ enum mipi_seq_element {
MIPI_SEQ_ELEM_SEND_PKT,
MIPI_SEQ_ELEM_DELAY,
MIPI_SEQ_ELEM_GPIO,
MIPI_SEQ_ELEM_STATUS,
MIPI_SEQ_ELEM_I2C, /* sequence block v2+ */
MIPI_SEQ_ELEM_MAX
};