From patchwork Tue Aug 16 15:36:45 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Takashi Iwai X-Patchwork-Id: 12945049 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6616BC25B0E for ; Tue, 16 Aug 2022 15:37:36 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2C76410F673; Tue, 16 Aug 2022 15:37:18 +0000 (UTC) X-Greylist: delayed 6097 seconds by postgrey-1.36 at gabe; Tue, 16 Aug 2022 15:37:02 UTC Received: from smtp-out2.suse.de (smtp-out2.suse.de [IPv6:2001:67c:2178:6::1d]) by gabe.freedesktop.org (Postfix) with ESMTPS id A64B090B98 for ; Tue, 16 Aug 2022 15:37:02 +0000 (UTC) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 646371FE90; Tue, 16 Aug 2022 15:37:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1660664221; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=eS3+J1xXqrlEflC4+69MJ2yPUC0hDCX6aposgxx7isU=; b=Y6iRCAtE63g2ELrm9EeNCxQNwW9kgwU95WSieYsd2/23Ji3kmd8kpJIeuijYmmWGSsH4HR OJD7aflGFR6ttyVZ2gvrRQMW+rRTirhgtmZdNDTJV+xdZvwoe1nNhxO++kXLHrTZruc+8C MnuVlHTddQ4GqZOV4Xg9i+AzYPr1uEw= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1660664221; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=eS3+J1xXqrlEflC4+69MJ2yPUC0hDCX6aposgxx7isU=; b=cGzskk8o/xdi0N+lVV+borXjwtXabYB8KR7RtLKqhoTEwfSlqZLBnw3pd5JILW5M+jhwXm ZXW/0zF4JfYTH3Cw== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 00D23139B7; Tue, 16 Aug 2022 15:37:00 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id +IvwOpy5+2LKJAAAMHmgww (envelope-from ); Tue, 16 Aug 2022 15:37:00 +0000 From: Takashi Iwai To: Thomas Zimmermann Subject: [PATCH 02/12] drm/udl: Add reset_resume Date: Tue, 16 Aug 2022 17:36:45 +0200 Message-Id: <20220816153655.27526-3-tiwai@suse.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20220816153655.27526-1-tiwai@suse.de> References: <20220816153655.27526-1-tiwai@suse.de> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Thomas Zimmermann Implement the reset_resume callback of struct usb_driver. Set the standard channel when called. Signed-off-by: Thomas Zimmermann Signed-off-by: Takashi Iwai --- drivers/gpu/drm/udl/udl_drv.c | 11 +++++++++++ drivers/gpu/drm/udl/udl_drv.h | 1 + drivers/gpu/drm/udl/udl_main.c | 2 +- 3 files changed, 13 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/udl/udl_drv.c b/drivers/gpu/drm/udl/udl_drv.c index 5703277c6f52..0ba88e5472a9 100644 --- a/drivers/gpu/drm/udl/udl_drv.c +++ b/drivers/gpu/drm/udl/udl_drv.c @@ -32,6 +32,16 @@ static int udl_usb_resume(struct usb_interface *interface) return drm_mode_config_helper_resume(dev); } +static int udl_usb_reset_resume(struct usb_interface *interface) +{ + struct drm_device *dev = usb_get_intfdata(interface); + struct udl_device *udl = to_udl(dev); + + udl_select_std_channel(udl); + + return drm_mode_config_helper_resume(dev); +} + /* * FIXME: Dma-buf sharing requires DMA support by the importing device. * This function is a workaround to make USB devices work as well. @@ -140,6 +150,7 @@ static struct usb_driver udl_driver = { .disconnect = udl_usb_disconnect, .suspend = udl_usb_suspend, .resume = udl_usb_resume, + .reset_resume = udl_usb_reset_resume, .id_table = id_table, }; module_usb_driver(udl_driver); diff --git a/drivers/gpu/drm/udl/udl_drv.h b/drivers/gpu/drm/udl/udl_drv.h index 28aaf75d71cf..37c14b0ff1fc 100644 --- a/drivers/gpu/drm/udl/udl_drv.h +++ b/drivers/gpu/drm/udl/udl_drv.h @@ -95,6 +95,7 @@ int udl_render_hline(struct drm_device *dev, int log_bpp, struct urb **urb_ptr, u32 byte_offset, u32 device_byte_offset, u32 byte_width); int udl_drop_usb(struct drm_device *dev); +int udl_select_std_channel(struct udl_device *udl); #define CMD_WRITE_RAW8 "\xAF\x60" /**< 8 bit raw write command. */ #define CMD_WRITE_RL8 "\xAF\x61" /**< 8 bit run length command. */ diff --git a/drivers/gpu/drm/udl/udl_main.c b/drivers/gpu/drm/udl/udl_main.c index fdafbf8f3c3c..7d1e6bbc165c 100644 --- a/drivers/gpu/drm/udl/udl_main.c +++ b/drivers/gpu/drm/udl/udl_main.c @@ -92,7 +92,7 @@ static int udl_parse_vendor_descriptor(struct udl_device *udl) /* * Need to ensure a channel is selected before submitting URBs */ -static int udl_select_std_channel(struct udl_device *udl) +int udl_select_std_channel(struct udl_device *udl) { static const u8 set_def_chn[] = {0x57, 0xCD, 0xDC, 0xA7, 0x1C, 0x88, 0x5E, 0x15,