This patch set adds a new drm driver for Hisilicon Hibmc. Hibmc is a
BMC SoC with a display controller intergrated, usually it is used on
server for Out-of-band management purpose. In this patch set, we just
support basic function for Hibmc display subsystem. Hibmc display
subsystem is connected to host CPU by PCIe as blow:
+----------+ +----------+
| | PCIe | Hibmc |
|host CPU( |<----->| display |
|arm64,x86)| |subsystem |
+----------+ +----------+
Hardware Detail for Hibmc display subsystem
-----------
The display subsystem of Hibmc is show as bellow:
+----+ +----+ +----+ +--------+
| | | | | | | |
| FB |----->| DE |----->|VDAC|---->|external|
| | | | | | | VGA |
+----+ +----+ +----+ +--------+
-DE(Display Engine) is the display controller.
-VDAC(Video Digital-to-Analog converter) converts the RGB diaital data
stream from DE to VGA analog signals.
Change History
------------
Changes in v7:
-remove hibmc_drm_power.c/hibmc_drm_power.h, move the functions to
hibmc_drm_drv.c.
-remove hibmc_drm_de.h and move the struct defined in head file to
hibmc_drm_de.c.
-plane is initialized inside crtc, not in hibmc_kms_init().
-connector is initialized inside encoder, not in hibmc_kms_init().
-remove plane/crtc/encoder/connector from hibmc_drm_private struct.
-call drm_atomic_helper_suspend/resume in hibmc_pm_suspend/resume.
-remove these empty stubs because caller will do NULL check.
hibmc_plane_atomic_disable
hibmc_crtc_atomic_check
hibmc_encoder_disable
hibmc_encoder_enable
hibmc_encoder_atomic_check
-clean up in all error paths of creating driver-private framebuffer.
Changes in v6:
-remove the embedded framebuffer and use a pointer of hibmc_framebuffer
instead.
-remove the deprecated drm_framebuffer_unregister_private(),
drm_framebuffer_unreference() will be called in hibmc_fbdev_destroy().
-uninstall irq in hibmc_unload().
Changes in v5:
-rebase on v4.9-rc2.
-replace drm_fb_helper_set_suspend with drm_fb_helper_set_suspend_unlocked.
and remove redundant console_lock and console_unlock.
Changes in v4:
-remove unused include files, and include header file when it is needed.
-remove unused FLAG in Kconfig: DRM_GEM_CMA_HELPER/DRM_KMS_CMA_HELPER.
-remove drm_helper_disable_unused_functions, since we use DRIVER_ATOMIC.
Changes in v3:
-enable KMS, in v2, only fbdev is enabled.
-management video memory with ttm.
-add vblank interrupt.
-remove drm_connector_register_all() and drm_connector_unregister_all().
-I have a basic test with igt.
Changes in v2:
-Remove self-defined macros for bit operations.
-Remove unused register.
-Replace those deprecated functions with new version of them.
-use drm_connector_register_all() to register connector after
drm_dev_register().
The patch v2 is at
https://lists.freedesktop.org/archives/dri-devel/2016-May/108661.html
Rongrong Zou (7):
drm/hisilicon/hibmc: Add hisilicon hibmc drm master driver
drm/hisilicon/hibmc: Add video memory management
drm/hisilicon/hibmc: Add support for frame buffer
drm/hisilicon/hibmc: Add support for display engine
drm/hisilicon/hibmc: Add support for VDAC
drm/hisilicon/hibmc: Add support for vblank interrupt
MAINTAINERS: Update HISILICON DRM entries
MAINTAINERS | 1 +
drivers/gpu/drm/hisilicon/Kconfig | 1 +
drivers/gpu/drm/hisilicon/Makefile | 1 +
drivers/gpu/drm/hisilicon/hibmc/Kconfig | 9 +
drivers/gpu/drm/hisilicon/hibmc/Makefile | 4 +
drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c | 477 ++++++++++++++++++
drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 456 ++++++++++++++++++
drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h | 114 +++++
drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_fbdev.c | 267 +++++++++++
drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_regs.h | 196 ++++++++
drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_vdac.c | 147 ++++++
drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c | 558 ++++++++++++++++++++++
12 files changed, 2231 insertions(+)
create mode 100644 drivers/gpu/drm/hisilicon/hibmc/Kconfig
create mode 100644 drivers/gpu/drm/hisilicon/hibmc/Makefile
create mode 100644 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c
create mode 100644 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
create mode 100644 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
create mode 100644 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_fbdev.c
create mode 100644 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_regs.h
create mode 100644 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_vdac.c
create mode 100644 drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c
--
1.9.1
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