drm/i915: Add parsing support for new MIPI blocks in VBT
The parser extracts the config block(#52) and sequence(#53) data
and store in private data structures.
v2: Address review comments by Jani
- adjust code for the structure changes for bdb_mipi_config
- add boundry and buffer overflow checks as suggested
- use kmemdup instead of kmalloc and memcpy
v3: More strict check while parsing VBT
- Ensure that at anytime we do not go beyond sequence block
while parsing
- On unknown element fail the whole parsing
v4: Style changes and spell check mostly as suggested by Jani
Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_bios.h b/drivers/gpu/drm/i915/intel_bios.h
index d02e5f9..15ae3b5 100644
--- a/drivers/gpu/drm/i915/intel_bios.h
+++ b/drivers/gpu/drm/i915/intel_bios.h
@@ -896,4 +896,35 @@
u8 data[0];
};
+/* MIPI Sequnece Block definitions */
+enum mipi_seq {
+ MIPI_SEQ_UNDEFINED = 0,
+ MIPI_SEQ_ASSERT_RESET,
+ MIPI_SEQ_INIT_OTP,
+ MIPI_SEQ_DISPLAY_ON,
+ MIPI_SEQ_DISPLAY_OFF,
+ MIPI_SEQ_DEASSERT_RESET,
+ MIPI_SEQ_MAX
+};
+
+enum mipi_seq_element {
+ MIPI_SEQ_ELEM_UNDEFINED = 0,
+ MIPI_SEQ_ELEM_SEND_PKT,
+ MIPI_SEQ_ELEM_DELAY,
+ MIPI_SEQ_ELEM_GPIO,
+ MIPI_SEQ_ELEM_STATUS,
+ MIPI_SEQ_ELEM_MAX
+};
+
+enum mipi_gpio_pin_index {
+ MIPI_GPIO_UNDEFINED = 0,
+ MIPI_GPIO_PANEL_ENABLE,
+ MIPI_GPIO_BL_ENABLE,
+ MIPI_GPIO_PWM_ENABLE,
+ MIPI_GPIO_RESET_N,
+ MIPI_GPIO_PWR_DOWN_R,
+ MIPI_GPIO_STDBY_RST_N,
+ MIPI_GPIO_MAX
+};
+
#endif /* _I830_BIOS_H_ */