From f4d64936afb414fd5af3ac301919407273fb74a4 Mon Sep 17 00:00:00 2001
From: Jani Nikula <jani.nikula@intel.com>
Date: Mon, 21 Dec 2015 15:11:00 +0200
Subject: [PATCH] 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
---
drivers/gpu/drm/i915/intel_bios.c | 5 +++++
drivers/gpu/drm/i915/intel_bios.h | 2 +-
2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
index 71c739e33101..69040a73c09a 100644
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -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;
diff --git a/drivers/gpu/drm/i915/intel_bios.h b/drivers/gpu/drm/i915/intel_bios.h
index 4e87df16e7b3..411b33794536 100644
--- a/drivers/gpu/drm/i915/intel_bios.h
+++ b/drivers/gpu/drm/i915/intel_bios.h
@@ -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
};
--
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