drm/sitronix/st7571-i2c: Add support for the ST7567 Controller

The Sitronix ST7567 is a monochrome Dot Matrix LCD Controller that has SPI,
I2C and parallel interfaces. The st7571-i2c driver only has

drm/sitronix/st7571-i2c: Add support for the ST7567 Controller

The Sitronix ST7567 is a monochrome Dot Matrix LCD Controller that has SPI,
I2C and parallel interfaces. The st7571-i2c driver only has support for I2C
so displays using other transport interfaces are currently not supported.

The DRM_FORMAT_R1 pixel format and data commands are the same than what
is used by the ST7571 controller, so only is needed a different callback
that implements the expected initialization sequence for the ST7567 chip.

Reviewed-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://lore.kernel.org/r/20250715110411.448343-6-javierm@redhat.com
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>

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drm/sitronix/st7571-i2c: Add an indirection level to parse DT

Other Sitronix display controllers might need a different parsing DT
logic, so lets add a .parse_dt callback to struct st7571_panel_data

drm/sitronix/st7571-i2c: Add an indirection level to parse DT

Other Sitronix display controllers might need a different parsing DT
logic, so lets add a .parse_dt callback to struct st7571_panel_data.

Suggested-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Link: https://lore.kernel.org/r/20250715110411.448343-4-javierm@redhat.com
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>

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drm/sitronix/st7571-i2c: Log probe deferral cause for GPIO get failure

The driver already uses the dev_err_probe() helper (that only prints error
messages for the -EPROBE_DEFER case) when fails to g

drm/sitronix/st7571-i2c: Log probe deferral cause for GPIO get failure

The driver already uses the dev_err_probe() helper (that only prints error
messages for the -EPROBE_DEFER case) when fails to get any other resource.

Also do the same when it fails to obtain the reset GPIO.

Reviewed-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Link: https://lore.kernel.org/r/20250715110411.448343-3-javierm@redhat.com
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>

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drm/sitronix/st7571-i2c: Fix encoder callbacks function names

It seems the driver took some inspiration from ssd130x and some of the
functions (encoder callbacks) were not renamed to use a st7571_ p

drm/sitronix/st7571-i2c: Fix encoder callbacks function names

It seems the driver took some inspiration from ssd130x and some of the
functions (encoder callbacks) were not renamed to use a st7571_ prefix.

Reviewed-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Link: https://lore.kernel.org/r/20250715110411.448343-2-javierm@redhat.com
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>

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Merge tag 'drm-misc-next-2025-06-12' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next

drm-misc-next for 6.17:

UAPI Changes:

Cross-subsystem Changes:

Core Changes:
- atomic-helpers

Merge tag 'drm-misc-next-2025-06-12' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next

drm-misc-next for 6.17:

UAPI Changes:

Cross-subsystem Changes:

Core Changes:
- atomic-helpers: Tune the enable / disable sequence
- bridge: Add destroy hook
- color management: Add helpers for hardware gamma LUT handling
- HDMI: Add CEC handling, YUV420 output support
- sched: tracing improvements

Driver Changes:
- hyperv: Move out of simple-kms, drm_panic support
- i915: drm_panel_follower support
- imx: Add IMX8qxq Display Controller Support
- lima: Add Rockchip RK3528 GPU Support
- nouveau: fence handling cleanup
- panfrost: Add BO labeling, 64-bit registers access
- qaic: Add RAS Support
- rz-du: Add RZ/V2H(P) Support, MIPI-DSI DCS Support
- sun4i: Add H616 Support
- tidss: Add TI AM62L Support
- vkms: YUV and R* formats support

- bridges:
- Switched to reference counted drm_bridge allocations

- panels:
- Switched to reference counted drm_panel allocations
- Add support for fwnode-based panel lookup
- himax-hx8394: Support for Huiling hl055fhv028c
- ilitek-ili9881c: Support for 7" Raspberry Pi 720x1280
- panel-edp: Support for KDC KD116N3730A05, N160JCE-ELL CMN,
- panel-simple: Support for AUO P238HAN01
- st7701: Support for Winstar wf40eswaa6mnn0
- visionox-rm69299: Support for rm69299-shift
- New panels: Renesas R61307, Renesas R69328

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maxime Ripard <mripard@redhat.com>
Link: https://lore.kernel.org/r/20250612-coucal-of-impossible-cleaning-a5eecf@houat

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drm/sitronix: st7571-i2c: Select VIDEOMODE_HELPERS

This driver requires of_get_display_timing() from
CONFIG_VIDEOMODE_HELPERS but does not select it. If no other driver
selects it, there will be a f

drm/sitronix: st7571-i2c: Select VIDEOMODE_HELPERS

This driver requires of_get_display_timing() from
CONFIG_VIDEOMODE_HELPERS but does not select it. If no other driver
selects it, there will be a failure from the linker if the driver is
built in or modpost if it is a module.

ERROR: modpost: "of_get_display_timing" [drivers/gpu/drm/sitronix/st7571-i2c.ko] undefined!

Select CONFIG_VIDEOMODE_HELPERS to resolve the build failure.

Fixes: 4b35f0f41ee2 ("drm/st7571-i2c: add support for Sitronix ST7571 LCD controller")
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Link: https://lore.kernel.org/r/20250610-drm-st7571-i2c-select-videomode-helpers-v1-1-d30b50ff6e64@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>

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