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b=D+XpVou/CfNAe/rfs5Bh79W5/7f/XUAKmubKGZBtDz8hdDyYiO64hfsPjw1heA9IXGM8ce rfB9kHu3ayFyTcCQ== Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id A99351333E; Fri, 23 Aug 2024 12:44:24 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id aLE2KCiEyGbKVwAAD6G6ig (envelope-from ); Fri, 23 Aug 2024 12:44:24 +0000 From: Thomas Zimmermann To: kraxel@redhat.com, daniel@ffwll.ch, airlied@gmail.com, mripard@kernel.org, maarten.lankhorst@linux.intel.com Cc: dri-devel@lists.freedesktop.org, virtualization@lists.linux.dev, Thomas Zimmermann Subject: [PATCH 02/10] drm/bochs: Use helpers for struct drm_edid Date: Fri, 23 Aug 2024 14:28:45 +0200 Message-ID: <20240823124422.286989-3-tzimmermann@suse.de> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240823124422.286989-1-tzimmermann@suse.de> References: <20240823124422.286989-1-tzimmermann@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spamd-Result: default: False [-6.80 / 50.00]; REPLY(-4.00)[]; BAYES_HAM(-3.00)[100.00%]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_MISSING_CHARSET(0.50)[]; NEURAL_HAM_SHORT(-0.20)[-0.996]; MIME_GOOD(-0.10)[text/plain]; RCVD_COUNT_TWO(0.00)[2]; RCVD_VIA_SMTP_AUTH(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; ARC_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; RCVD_TLS_ALL(0.00)[]; RCPT_COUNT_SEVEN(0.00)[8]; FUZZY_BLOCKED(0.00)[rspamd.com]; FREEMAIL_TO(0.00)[redhat.com,ffwll.ch,gmail.com,kernel.org,linux.intel.com]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; DBL_BLOCKED_OPENRESOLVER(0.00)[imap1.dmz-prg2.suse.org:helo,suse.de:email,suse.de:mid]; TO_DN_SOME(0.00)[]; FREEMAIL_ENVRCPT(0.00)[gmail.com] 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: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Implement a read function for struct drm_edid and read the EDID data with drm_edit_read_custom(). Update the connector data accordingly. The EDID data comes from the emulator itself and the connector stores a copy in its EDID property. The drm_edid field in struct bochs_device is therefore not required. Remove it. If qemu provides no EDID data, install default display modes as before. Signed-off-by: Thomas Zimmermann --- drivers/gpu/drm/tiny/bochs.c | 48 +++++++++++++++++------------------- 1 file changed, 22 insertions(+), 26 deletions(-) diff --git a/drivers/gpu/drm/tiny/bochs.c b/drivers/gpu/drm/tiny/bochs.c index 47a45a14306c..197fc00b373f 100644 --- a/drivers/gpu/drm/tiny/bochs.c +++ b/drivers/gpu/drm/tiny/bochs.c @@ -85,7 +85,6 @@ struct bochs_device { u16 yres_virtual; u32 stride; u32 bpp; - const struct drm_edid *drm_edid; /* drm */ struct drm_device *dev; @@ -172,12 +171,14 @@ static void bochs_hw_set_little_endian(struct bochs_device *bochs) #define bochs_hw_set_native_endian(_b) bochs_hw_set_little_endian(_b) #endif -static int bochs_get_edid_block(void *data, u8 *buf, - unsigned int block, size_t len) +static int bochs_get_edid_block(void *data, u8 *buf, unsigned int block, size_t len) { struct bochs_device *bochs = data; size_t i, start = block * EDID_LENGTH; + if (!bochs->mmio) + return -1; + if (start + len > 0x400 /* vga register offset */) return -1; @@ -187,25 +188,20 @@ static int bochs_get_edid_block(void *data, u8 *buf, return 0; } -static int bochs_hw_load_edid(struct bochs_device *bochs) +static const struct drm_edid *bochs_hw_read_edid(struct drm_connector *connector) { + struct drm_device *dev = connector->dev; + struct bochs_device *bochs = dev->dev_private; u8 header[8]; - if (!bochs->mmio) - return -1; - /* check header to detect whenever edid support is enabled in qemu */ bochs_get_edid_block(bochs, header, 0, ARRAY_SIZE(header)); if (drm_edid_header_is_valid(header) != 8) - return -1; + return NULL; - drm_edid_free(bochs->drm_edid); - bochs->drm_edid = drm_edid_read_custom(&bochs->connector, - bochs_get_edid_block, bochs); - if (!bochs->drm_edid) - return -1; + drm_dbg(dev, "Found EDID data blob.\n"); - return 0; + return drm_edid_read_custom(connector, bochs_get_edid_block, bochs); } static int bochs_hw_init(struct drm_device *dev) @@ -303,7 +299,6 @@ static void bochs_hw_fini(struct drm_device *dev) if (bochs->fb_map) iounmap(bochs->fb_map); pci_release_regions(to_pci_dev(dev->dev)); - drm_edid_free(bochs->drm_edid); } static void bochs_hw_blank(struct bochs_device *bochs, bool blank) @@ -469,21 +464,28 @@ static const struct drm_simple_display_pipe_funcs bochs_pipe_funcs = { .cleanup_fb = drm_gem_vram_simple_display_pipe_cleanup_fb, }; -static int bochs_connector_get_modes(struct drm_connector *connector) +static int bochs_connector_helper_get_modes(struct drm_connector *connector) { + const struct drm_edid *edid; int count; - count = drm_edid_connector_add_modes(connector); + edid = bochs_hw_read_edid(connector); - if (!count) { + if (edid) { + drm_edid_connector_update(connector, edid); + count = drm_edid_connector_add_modes(connector); + drm_edid_free(edid); + } else { + drm_edid_connector_update(connector, NULL); count = drm_add_modes_noedid(connector, 8192, 8192); drm_set_preferred_mode(connector, defx, defy); } + return count; } static const struct drm_connector_helper_funcs bochs_connector_connector_helper_funcs = { - .get_modes = bochs_connector_get_modes, + .get_modes = bochs_connector_helper_get_modes, }; static const struct drm_connector_funcs bochs_connector_connector_funcs = { @@ -501,14 +503,8 @@ static void bochs_connector_init(struct drm_device *dev) drm_connector_init(dev, connector, &bochs_connector_connector_funcs, DRM_MODE_CONNECTOR_VIRTUAL); + drm_connector_attach_edid_property(connector); drm_connector_helper_add(connector, &bochs_connector_connector_helper_funcs); - - bochs_hw_load_edid(bochs); - if (bochs->drm_edid) { - DRM_INFO("Found EDID data blob.\n"); - drm_connector_attach_edid_property(connector); - drm_edid_connector_update(&bochs->connector, bochs->drm_edid); - } } static const struct drm_mode_config_funcs bochs_mode_funcs = { -- 2.46.0