[PATCH 00/15] drm/ast: Clean up access to MMIO registers

[Thomas Zimmermann <tzimmermann@suse.de>]

Aspeed devices up to Gen6 contain internal memory that is accessible
from the host via the P2A bridge. The helpers ast_moutdwm() and
ast_mindwm() pick a 64-KiB segment of the memory to expose to the
host, which then has the content available. Content is either registers
of the various IP blocks or on-board system memory.

Clean up the driver code involved and provide macro constants for the
registers used by the ast driver. Go through the driver and replace
the magic values with the constants.

The first patch of the series fixes a bug that has been found while
working on these changes. The DP501 writes the content of register
SCU2C to the wrong address. The fix is a separate patch to ease
backporting.

Smoke-tested on AST2100, AST2300, AST2500 and AST2600.

Thomas Zimmermann (15):
  drm/ast: dp501: Fix initialization of SCU2C
  drm/ast: Move 32-bit register-access helpers to ast_drv.{c,h}
  drm/ast: Use constants for AHBC registers
  drm/ast: Use constants for MCR registers
  drm/ast: Use constants for SCU registers
  drm/ast: Use constants for A2P registers
  drm/ast: Use constants for WDT registers
  drm/ast: Use constants for SDRAM registers
  drm/ast: Store register addresses in struct ast_dramstruct
  drm/ast: Gen1: Fix open-coded register access
  drm/ast: Gen2: Fix open-coded register access
  drm/ast: Gen4: Fix open-coded register access
  drm/ast: Gen6: Fix open-coded register access
  drm/ast: dp501: Fix open-coded register access
  drm/ast: Fix open-coded scu_rev access

 drivers/gpu/drm/ast/ast_2000.c  |  61 +++--
 drivers/gpu/drm/ast/ast_2100.c  | 292 +++++++++++------------
 drivers/gpu/drm/ast/ast_2300.c  | 398 ++++++++++++++++----------------
 drivers/gpu/drm/ast/ast_2500.c  | 319 ++++++++++++-------------
 drivers/gpu/drm/ast/ast_dp501.c | 146 ++++++------
 drivers/gpu/drm/ast/ast_drv.c   |  84 ++++++-
 drivers/gpu/drm/ast/ast_drv.h   |  60 +++--
 drivers/gpu/drm/ast/ast_post.c  |  48 +---
 drivers/gpu/drm/ast/ast_post.h  |  20 +-
 drivers/gpu/drm/ast/ast_reg.h   | 155 +++++++++++++
 10 files changed, 886 insertions(+), 697 deletions(-)


base-commit: 5cb7d14d9bd2061386a0192a4649626a3e3a5ec3
-- 
2.53.0