{"id":2234216,"url":"http://patchwork.ozlabs.org/api/1.2/covers/2234216/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/cover/20260507120524.111056-1-npiggin@gmail.com/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/1.2/projects/14/?format=json","name":"QEMU Development","link_name":"qemu-devel","list_id":"qemu-devel.nongnu.org","list_email":"qemu-devel@nongnu.org","web_url":"","scm_url":"","webscm_url":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260507120524.111056-1-npiggin@gmail.com>","list_archive_url":null,"date":"2026-05-07T12:05:18","name":"[0/4] hw/i2c: Add designware i2c controller","submitter":{"id":69518,"url":"http://patchwork.ozlabs.org/api/1.2/people/69518/?format=json","name":"Nicholas Piggin","email":"npiggin@gmail.com"},"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/cover/20260507120524.111056-1-npiggin@gmail.com/mbox/","series":[{"id":503171,"url":"http://patchwork.ozlabs.org/api/1.2/series/503171/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=503171","date":"2026-05-07T12:05:18","name":"hw/i2c: Add designware i2c controller","version":1,"mbox":"http://patchwork.ozlabs.org/series/503171/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/covers/2234216/comments/","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=DqayFYIf;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; 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helo=mail-pf1-x436.google.com","X-Spam_score_int":"-20","X-Spam_score":"-2.1","X-Spam_bar":"--","X-Spam_report":"(-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001,\n RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001,\n SPF_PASS=-0.001 autolearn=ham autolearn_force=no","X-Spam_action":"no action","X-BeenThere":"qemu-devel@nongnu.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"qemu development ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org"},"content":"Hi,\n\nThis series contains the DW I2C model written by Chris Rauer and\nupdated for the Tenstorrent Atlantis machine recently. There was\nsome more review comment on that submission and so we decided to\ntake the I2C device out of that series and work on it separately,\nsee here:\n\nhttps://lore.kernel.org/qemu-devel/20260425131721.932250-1-joel@jms.id.au/T/#mb1ef2824c2f1f37bf4574dc1ef0fb95566c3a2f2\n\nThe big thing suggested was to move to the QEMU register API. That\nis a big change and difficult to review, so I have split that and\na some smaller changes out into their own patches. I don't expect\ndetailed reviews on the register API patch -- it's quite mechanical\nand I did attempt to verify it by diff'ing register traces. But it\nwould be good to make sure maintainers are happy to go that way.\n\nUnfortunately the patch 1 was quite well reviewed and tested so\nincremental changes would be preferable, but it is painful to maintain\nmigration compatibility across these changes.\n\nThanks,\nNick\n\nChris Rauer (1):\n hw/i2c: Add designware i2c controller\n\nNicholas Piggin (3):\n [RFC] hw/i2c/designware_i2c: Switch to Fifo8\n [RFC] hw/i2c/designware_i2c: Switch to QEMU register API\n [RFC] hw/i2c/designware_i2c: add SMBUS_INTR_MASK\n\n MAINTAINERS | 8 +\n hw/i2c/Kconfig | 5 +\n hw/i2c/designware_i2c.c | 742 ++++++++++++++++++++++++++++++++\n hw/i2c/meson.build | 1 +\n hw/i2c/trace-events | 4 +\n include/hw/i2c/designware_i2c.h | 56 +++\n roms/seabios-hppa | 2 +-\n 7 files changed, 817 insertions(+), 1 deletion(-)\n create mode 100644 hw/i2c/designware_i2c.c\n create mode 100644 include/hw/i2c/designware_i2c.h"}