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Wed, 20 Dec 2023 13:46:46 +0000 From: Thomas Zimmermann To: deller@gmx.de, James.Bottomley@HansenPartnership.com, arnd@arndb.de Cc: linux-parisc@vger.kernel.org, linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org, Thomas Zimmermann Subject: [PATCH 0/4] arch/parisc: Detect primary framebuffer from device Date: Wed, 20 Dec 2023 14:22:53 +0100 Message-ID: <20231220134639.8190-1-tzimmermann@suse.de> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-fbdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Spam-Level: *** X-Spamd-Bar: +++ Authentication-Results: smtp-out1.suse.de; dkim=pass header.d=suse.de header.s=susede2_rsa header.b="W6ZQsU/y"; dkim=pass header.d=suse.de header.s=susede2_ed25519 header.b=wTc+iQ6t X-Rspamd-Server: rspamd2.dmz-prg2.suse.org X-Spamd-Result: default: False [3.49 / 50.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; SPAMHAUS_XBL(0.00)[2a07:de40:b281:104:10:150:64:98:from]; TO_DN_SOME(0.00)[]; R_MISSING_CHARSET(2.50)[]; BROKEN_CONTENT_TYPE(1.50)[]; RCVD_COUNT_THREE(0.00)[3]; DKIM_TRACE(0.00)[suse.de:+]; MX_GOOD(-0.01)[]; RCPT_COUNT_SEVEN(0.00)[7]; NEURAL_HAM_SHORT(-0.20)[-1.000]; FREEMAIL_TO(0.00)[gmx.de,HansenPartnership.com,arndb.de]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; BAYES_HAM(-0.00)[22.46%]; ARC_NA(0.00)[]; R_DKIM_ALLOW(-0.20)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; FROM_HAS_DN(0.00)[]; FREEMAIL_ENVRCPT(0.00)[gmx.de]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MIME_GOOD(-0.10)[text/plain]; NEURAL_HAM_LONG(-1.00)[-1.000]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; MID_CONTAINS_FROM(1.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:dkim]; FUZZY_BLOCKED(0.00)[rspamd.com]; RCVD_TLS_ALL(0.00)[] X-Spam-Score: 3.49 X-Rspamd-Queue-Id: 1D6E622325 X-Spam-Flag: NO On parisc, change detection of the primary framebuffer to test for the Linux device instead of fbdev's fb_info in fb_is_primary_device(). Makes the test independent from fbdev. This patchset is part of a larger effort to clean up the low-level display handling. There are various functions that attempt to detect the system's primary framebuffer device, such as in vgaarb, [1] fbcon, [2] or fbmon. [3] This code should be unified in a single helper that implements the test. The function fb_is_primary_device() already does this, but requires fbdev on parisc. With the patchset applied, the parisc implementation tests directly with the Linux device. No fbdev is required. Patch 1 adds the framebuffer's Linux device to the STI ROM structures, which represents the graphics firmware. Patches 2 updates the stifb driver to refer to the correct Linux device. The device is used in patch 3 to change the test in fb_is_primary_device(). Patch 4 removes the obsolete fb_info from the STI ROM structures. A later patchset will update the interface of fb_is_primary_device() to receive a Linux device instead of an instance of fb_info. This involves several architectures, so it better done in a separate patch. [1] https://elixir.bootlin.com/linux/v6.6/source/drivers/pci/vgaarb.c#L557 [2] https://elixir.bootlin.com/linux/v6.6/source/drivers/video/fbdev/core/fbcon.c#L2943 [3] https://elixir.bootlin.com/linux/v6.6/source/drivers/video/fbdev/core/fbmon.c#L1503 Thomas Zimmermann (4): video/sticore: Store ROM device in STI struct fbdev/stifb: Allocate fb_info instance with framebuffer_alloc() arch/parisc: Detect primary video device from device instance video/sticore: Remove info field from STI struct arch/parisc/video/fbdev.c | 2 +- drivers/video/fbdev/stifb.c | 109 ++++++++++++++++++------------------ drivers/video/sticore.c | 5 ++ include/video/sticore.h | 6 +- 4 files changed, 65 insertions(+), 57 deletions(-) base-commit: 8da6351b7194938a876184d34c4c0802e805d3cf