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[rft,v3,00/15] drm/i915/dsi: 2nd attempt to get rid of IOSF GPIO

Message ID 20231102151228.668842-1-andriy.shevchenko@linux.intel.com
Headers
Series drm/i915/dsi: 2nd attempt to get rid of IOSF GPIO |

Message

Andy Shevchenko Nov. 2, 2023, 3:12 p.m. UTC 
  DSI code for VBT has a set of ugly GPIO hacks, one of which is direct
talking to GPIO IP behind the actual driver's back. A second attempt
to fix that is here.

If I understood correctly, my approach should work in the similar way as
the current IOSF GPIO.

Hans, I believe you have some devices that use this piece of code,
is it possible to give a test run on (one of) them?

In v3:
- incorporated series by Jani
- incorporated couple of precursor patches by Hans
- added Rb tag for used to be first three patches (Andi)
- rebased on top of the above changes
- fixed indexing for multi-community devices, such as Cherry View

In v2:
- added a few cleanup patches
- reworked to use dynamic GPIO lookup tables
- converted CHV as well

Andy Shevchenko (8):
  drm/i915/dsi: Replace while(1) with one with clear exit condition
  drm/i915/dsi: Get rid of redundant 'else'
  drm/i915/dsi: Replace check with a (missing) MIPI sequence name
  drm/i915/dsi: Extract common soc_gpio_set_value() helper
  drm/i915/dsi: Replace poking of VLV GPIOs behind the driver's back
  drm/i915/dsi: Prepare soc_gpio_set_value() to distinguish GPIO
    communities
  drm/i915/dsi: Replace poking of CHV GPIOs behind the driver's back
  drm/i915/iosf: Drop unused APIs

Hans de Goede (2):
  drm/i915/dsi: Remove GPIO lookup table at the end of
    intel_dsi_vbt_gpio_init()
  drm/i915/dsi: Fix wrong initial value for GPIOs in bxt_exec_gpio()

Jani Nikula (5):
  drm/i915/dsi: assume BXT gpio works for non-native GPIO
  drm/i915/dsi: switch mipi_exec_gpio() from dev_priv to i915
  drm/i915/dsi: clarify GPIO exec sequence
  drm/i915/dsi: rename platform specific *_exec_gpio() to
    *_gpio_set_value()
  drm/i915/dsi: bxt/icl GPIO set value do not need gpio source

 drivers/gpu/drm/i915/display/intel_dsi_vbt.c | 355 +++++++------------
 drivers/gpu/drm/i915/vlv_sideband.c          |  17 -
 drivers/gpu/drm/i915/vlv_sideband.h          |   3 -
 3 files changed, 137 insertions(+), 238 deletions(-)

Comments

Andy Shevchenko Nov. 2, 2023, 3:17 p.m. UTC | #1 
On Thu, Nov 02, 2023 at 05:12:13PM +0200, Andy Shevchenko wrote:
> DSI code for VBT has a set of ugly GPIO hacks, one of which is direct
> talking to GPIO IP behind the actual driver's back. A second attempt
> to fix that is here.
> 
> If I understood correctly, my approach should work in the similar way as
> the current IOSF GPIO.
> 
> Hans, I believe you have some devices that use this piece of code,
> is it possible to give a test run on (one of) them?

Subject should be "3rd attempt ..." :-)

> In v3:
> - incorporated series by Jani
> - incorporated couple of precursor patches by Hans
> - added Rb tag for used to be first three patches (Andi)
> - rebased on top of the above changes
> - fixed indexing for multi-community devices, such as Cherry View
> 
> In v2:
> - added a few cleanup patches
> - reworked to use dynamic GPIO lookup tables
> - converted CHV as well
Jani Nikula Nov. 2, 2023, 3:40 p.m. UTC | #2 
On Thu, 02 Nov 2023, Andy Shevchenko <andriy.shevchenko@linux.intel.com> wrote:
> DSI code for VBT has a set of ugly GPIO hacks, one of which is direct
> talking to GPIO IP behind the actual driver's back. A second attempt
> to fix that is here.
>
> If I understood correctly, my approach should work in the similar way as
> the current IOSF GPIO.
>
> Hans, I believe you have some devices that use this piece of code,
> is it possible to give a test run on (one of) them?
>
> In v3:
> - incorporated series by Jani
> - incorporated couple of precursor patches by Hans
> - added Rb tag for used to be first three patches (Andi)
> - rebased on top of the above changes
> - fixed indexing for multi-community devices, such as Cherry View
>
> In v2:
> - added a few cleanup patches
> - reworked to use dynamic GPIO lookup tables
> - converted CHV as well
>
> Andy Shevchenko (8):
>   drm/i915/dsi: Replace while(1) with one with clear exit condition
>   drm/i915/dsi: Get rid of redundant 'else'
>   drm/i915/dsi: Replace check with a (missing) MIPI sequence name
>   drm/i915/dsi: Extract common soc_gpio_set_value() helper
>   drm/i915/dsi: Replace poking of VLV GPIOs behind the driver's back
>   drm/i915/dsi: Prepare soc_gpio_set_value() to distinguish GPIO
>     communities
>   drm/i915/dsi: Replace poking of CHV GPIOs behind the driver's back
>   drm/i915/iosf: Drop unused APIs
>
> Hans de Goede (2):
>   drm/i915/dsi: Remove GPIO lookup table at the end of
>     intel_dsi_vbt_gpio_init()
>   drm/i915/dsi: Fix wrong initial value for GPIOs in bxt_exec_gpio()

Assuming it all still works, and I do trust Hans' testing here quite a
bit, the above is

Acked-by: Jani Nikula <jani.nikula@intel.com>

Thanks for doing this!

>
> Jani Nikula (5):
>   drm/i915/dsi: assume BXT gpio works for non-native GPIO
>   drm/i915/dsi: switch mipi_exec_gpio() from dev_priv to i915
>   drm/i915/dsi: clarify GPIO exec sequence
>   drm/i915/dsi: rename platform specific *_exec_gpio() to
>     *_gpio_set_value()
>   drm/i915/dsi: bxt/icl GPIO set value do not need gpio source
>
>  drivers/gpu/drm/i915/display/intel_dsi_vbt.c | 355 +++++++------------
>  drivers/gpu/drm/i915/vlv_sideband.c          |  17 -
>  drivers/gpu/drm/i915/vlv_sideband.h          |   3 -
>  3 files changed, 137 insertions(+), 238 deletions(-)