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drm/mgag200: Provide per-device callbacks for BMC synchronization

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Move the BMC-related code into its own file and wire it up with device
callbacks.

While programming a new display mode, G200EW3 and G200WB have to de-
synchronize with the BMC. Synchronization is done via VIDRST pins
and controlled via VRSTEN and HRSTEN bits. Move the BMC code behind
a serviceable interface and call it from the CRTC's enable and
disable functions.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Tested-by: Jocelyn Falempe <jfalempe@redhat.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220728124103.30159-11-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann
2022-07-28 14:40:59 +02:00
parent f639f74a78
commit 8aeeb3144f
6 changed files with 129 additions and 97 deletions
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2
drivers/gpu/drm/mgag200/mgag200_g200wb.c
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@@ -36,6 +36,8 @@ static const struct mgag200_device_info mgag200_g200wb_device_info =
MGAG200_DEVICE_INFO_INIT(1280, 1024, 31877, true, 0, 1, false);
static const struct mgag200_device_funcs mgag200_g200wb_device_funcs = {
.disable_vidrst = mgag200_bmc_disable_vidrst,
.enable_vidrst = mgag200_bmc_enable_vidrst,
};
struct mga_device *mgag200_g200wb_device_create(struct pci_dev *pdev, const struct drm_driver *drv,