On 10/17/22 04:49, Jagan Teki wrote:
On Sun, Oct 16, 2022 at 3:16 AM Marek Vasut <marex@xxxxxxx> wrote:
On 10/5/22 17:13, Jagan Teki wrote:
Samsung MIPI DSIM controller is common DSI IP that can be used in various
SoCs like Exynos, i.MX8M Mini/Nano.
In order to access this DSI controller between various platform SoCs,
the ideal way to incorporate this in the drm stack is via the drm bridge
driver.
This patch is trying to differentiate platform-specific and bridge driver
code by maintaining exynos platform glue code in exynos_drm_dsi.c driver
and common bridge driver code in samsung-dsim.c providing that the new
platform-specific glue should be supported in the bridge driver, unlike
exynos platform drm drivers.
- Add samsung_dsim_plat_data for keeping platform-specific attributes like
host_ops, irq_ops, and hw_type.
- Initialize the plat_data hooks for exynos platform in exynos_drm_dsi.c.
- samsung_dsim_probe is the common probe call across exynos_drm_dsi.c and
samsung-dsim.c.
- plat_data hooks like host_ops and irq_ops are invoked during the
respective bridge call chains.
Maybe the Subject should say "Split ... driver" or "Move ... driver" ,
since it is not adding a new driver here ?
Though it is not added a completely new driver, it is adding more
infrastructure platform code to be compatible with both Exynos and
i.MX8M. This is the prime reason for adding that commit head and
explaining the same in the commit body.
Diffstat looks like this:
drivers/gpu/drm/bridge/samsung-dsim.c | 1703 ++++++++++++++++++++++
drivers/gpu/drm/exynos/Kconfig | 1 +
drivers/gpu/drm/exynos/exynos_drm_dsi.c | 1766 ++---------------------
include/drm/bridge/samsung-dsim.h | 113 ++
7 files changed, 1952 insertions(+), 1653 deletions(-)
Looks to me like most of the code is just moved from existing driver in
this patch.
