Linux mainline fork with MSM8998 patches | https://mainline.space | Currently supported devices:
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634557be5a
Microsoft Surface 3 does not describe CsiPort/CsiLanes in DSDT [1] or
EFI, or at least not desctibed in the forms the current atomisp driver
expects. This results in the default values (port: 0 lanes: 1) to be
used, which does not work.
So, define them ourselves in the driver.
The user-facing camera is AR0330 (2-lane) and the world-facing camera
is OV8835 (4-lane).
According to the portconfigs definition in atomisp_csi_lane_config()
[atomisp_v4l2.c]:
} portconfigs[] = {
/* Tangier/Merrifield available lane configurations */
{ 0x00, { 4, 1, 0 } }, /* 00000 */
{ 0x01, { 3, 1, 0 } }, /* 00001 */
{ 0x02, { 2, 1, 0 } }, /* 00010 */
{ 0x03, { 1, 1, 0 } }, /* 00011 */
{ 0x04, { 2, 1, 2 } }, /* 00100 */
{ 0x08, { 3, 1, 1 } }, /* 01000 */
{ 0x09, { 2, 1, 1 } }, /* 01001 */
{ 0x0a, { 1, 1, 1 } }, /* 01010 */
/* Anniedale/Moorefield only configurations */
{ 0x10, { 4, 2, 0 } }, /* 10000 */
{ 0x11, { 3, 2, 0 } }, /* 10001 */
{ 0x12, { 2, 2, 0 } }, /* 10010 */
{ 0x13, { 1, 2, 0 } }, /* 10011 */
{ 0x14, { 2, 2, 2 } }, /* 10100 */
{ 0x18, { 3, 2, 1 } }, /* 11000 */
{ 0x19, { 2, 2, 1 } }, /* 11001 */
{ 0x1a, { 1, 2, 1 } }, /* 11010 */
};
4-lane camera is always connected to the PRIMARY (port1) port [2]. In
this case, 2-lane camera can be connected to the only SECONDARY (port0)
port.
So, add these data accordingly as the gmin_cfg_var ACPI variables for
Surface 3.
[1]
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| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.