From: Russell King <rmk+kernel@arm.linux.org.uk>
To: alsa-devel@alsa-project.org, dri-devel@lists.freedesktop.org,
linux-arm-kernel@lists.infradead.org
Cc: Fabio Estevam <fabio.estevam@freescale.com>,
David Airlie <airlied@linux.ie>, Mark Brown <broonie@kernel.org>,
Philipp Zabel <p.zabel@pengutronix.de>,
Yakir Yang <ykk@rock-chips.com>
Subject: [PATCH RFC v2 09/13] drm/edid: add function to help find SADs
Date: Thu, 02 Apr 2015 10:22:01 +0100 [thread overview]
Message-ID: <E1YdbK5-00085I-HB@rmk-PC.arm.linux.org.uk> (raw)
In-Reply-To: <20150402092050.GH24899@n2100.arm.linux.org.uk>
Add a function to find the start of the SADs in the ELD. This
complements the helper to retrieve the SAD count.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
include/drm/drm_edid.h | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h
index 87d85e81d3a7..c44ad513e0f7 100644
--- a/include/drm/drm_edid.h
+++ b/include/drm/drm_edid.h
@@ -346,6 +346,25 @@ static inline int drm_eld_mnl(const uint8_t *eld)
}
/**
+ * drm_eld_sad - Get ELD SAD structures.
+ * @eld: pointer to an eld memory structure with sad_count set
+ */
+static inline const uint8_t *drm_eld_sad(const uint8_t *eld)
+{
+ unsigned int ver, mnl;
+
+ ver = (eld[DRM_ELD_VER] & DRM_ELD_VER_MASK) >> DRM_ELD_VER_SHIFT;
+ if (ver != 2 && ver != 31)
+ return NULL;
+
+ mnl = drm_eld_mnl(eld);
+ if (mnl > 16)
+ return NULL;
+
+ return eld + DRM_ELD_CEA_SAD(mnl, 0);
+}
+
+/**
* drm_eld_sad_count - Get ELD SAD count.
* @eld: pointer to an eld memory structure with sad_count set
*/
--
1.8.3.1
next prev parent reply other threads:[~2015-04-02 9:22 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-02 9:20 [RFC v2 0/13] dw_hdmi cleanups, audio preparation, helpers and ahb audio support Russell King - ARM Linux
2015-04-02 9:21 ` [PATCH RFC v2 01/13] drm: imx/dw_hdmi: move phy comments Russell King
2015-04-02 9:21 ` [PATCH RFC v2 02/13] drm: bridge/dw_hdmi: clean up phy configuration Russell King
2015-04-02 9:21 ` [PATCH RFC v2 03/13] drm: bridge/dw_hdmi: clean up hdmi_set_clk_regenerator() Russell King
2015-04-02 9:21 ` [PATCH RFC v2 04/13] drm: bridge/dw_hdmi: use drm_hdmi_avi_infoframe_from_display_mode() Russell King
2015-04-02 9:21 ` [PATCH RFC v2 05/13] drm: bridge/dw_hdmi: simplify hdmi_config_AVI() a little Russell King
2015-04-02 9:21 ` [PATCH RFC v2 06/13] drm: bridge/dw_hdmi: remove mhsyncpolarity/mvsyncpolarity/minterlaced Russell King
2015-04-02 9:21 ` [PATCH RFC v2 07/13] drm: bridge/dw_hdmi: introduce interface to setting sample rate Russell King
2015-04-02 9:21 ` [PATCH RFC v2 08/13] drm: bridge/dw_hdmi: introduce interfaces to enable and disable audio Russell King
2015-04-02 9:22 ` Russell King [this message]
2015-04-02 9:22 ` [PATCH RFC v2 10/13] sound/core: add DRM ELD helper Russell King
2015-04-05 15:57 ` Takashi Iwai
2015-04-05 16:20 ` Russell King - ARM Linux
2015-04-05 16:46 ` Takashi Iwai
2015-04-05 17:26 ` Russell King - ARM Linux
2015-05-06 17:02 ` Anssi Hannula
2015-05-07 10:41 ` Russell King - ARM Linux
2015-05-07 11:11 ` Lars-Peter Clausen
2015-05-08 10:56 ` [alsa-devel] " Jyri Sarha
2015-05-08 11:42 ` Russell King - ARM Linux
2015-05-05 22:35 ` Mark Brown
2015-05-06 8:58 ` Liam Girdwood
2015-05-08 13:16 ` [alsa-devel] " Jyri Sarha
2015-05-08 13:27 ` Russell King - ARM Linux
2015-05-08 13:37 ` Jyri Sarha
2015-04-02 9:22 ` [PATCH RFC v2 11/13] sound/core: add IEC958 channel status helper Russell King
2015-04-02 9:22 ` [PATCH RFC v2 12/13] drm: bridge/dw_hdmi-ahb-audio: add audio driver Russell King
2015-04-02 9:22 ` [PATCH RFC v2 13/13] drm: bridge/dw_hdmi-ahb-audio: parse ELD from HDMI driver Russell King
2015-05-09 10:25 ` [PATCH v3 0/13] dw_hdmi cleanups, audio preparation, helpers and ahb audio support Russell King - ARM Linux
2015-05-09 10:25 ` [PATCH 01/13] drm: imx/dw_hdmi: move phy comments Russell King
2015-05-09 10:26 ` [PATCH 02/13] drm: bridge/dw_hdmi: clean up phy configuration Russell King
2015-05-22 15:19 ` Yakir
2015-05-09 10:26 ` [PATCH 03/13] drm: bridge/dw_hdmi: clean up hdmi_set_clk_regenerator() Russell King
2015-05-22 15:22 ` Yakir
2015-05-09 10:26 ` [PATCH 04/13] drm: bridge/dw_hdmi: use drm_hdmi_avi_infoframe_from_display_mode() Russell King
2015-05-09 10:26 ` [PATCH 05/13] drm: bridge/dw_hdmi: simplify hdmi_config_AVI() a little Russell King
2015-05-09 10:26 ` [PATCH 06/13] drm: bridge/dw_hdmi: remove mhsyncpolarity/mvsyncpolarity/minterlaced Russell King
2015-05-09 10:26 ` [PATCH 07/13] drm: bridge/dw_hdmi: introduce interface to setting sample rate Russell King
2015-05-22 15:26 ` Yakir
2015-05-09 10:26 ` [PATCH 08/13] drm: bridge/dw_hdmi: introduce interfaces to enable and disable audio Russell King
2015-05-22 15:28 ` Yakir
2015-05-09 10:26 ` [PATCH 09/13] drm/edid: add function to help find SADs Russell King
2015-05-09 10:26 ` [PATCH 10/13] sound/core: add DRM ELD helper Russell King
2015-05-22 12:20 ` [alsa-devel] " Mark Brown
2015-05-22 13:15 ` Russell King - ARM Linux
2015-05-22 13:30 ` Takashi Iwai
2015-05-22 13:53 ` Russell King - ARM Linux
2015-05-22 13:54 ` Takashi Iwai
2015-05-22 14:00 ` Russell King - ARM Linux
2015-05-22 14:02 ` Takashi Iwai
2015-05-22 14:05 ` Takashi Iwai
2015-05-22 16:12 ` Russell King - ARM Linux
2015-05-09 10:26 ` [PATCH 11/13] sound/core: add IEC958 channel status helper Russell King
2015-05-22 12:40 ` Mark Brown
2015-05-09 10:26 ` [PATCH 12/13] drm: bridge/dw_hdmi-ahb-audio: add audio driver Russell King
2015-05-09 16:49 ` [alsa-devel] " Anssi Hannula
2015-05-09 16:55 ` Russell King - ARM Linux
2015-05-09 17:07 ` Anssi Hannula
2015-05-09 17:40 ` Russell King - ARM Linux
2015-05-09 17:53 ` Russell King - ARM Linux
2015-05-09 17:55 ` Anssi Hannula
2015-05-09 18:11 ` Russell King - ARM Linux
2015-05-10 18:59 ` Anssi Hannula
2015-05-10 19:33 ` Russell King - ARM Linux
2015-05-10 20:47 ` Anssi Hannula
2015-05-11 15:58 ` Mark Brown
2015-05-09 10:26 ` [PATCH 13/13] drm: bridge/dw_hdmi-ahb-audio: parse ELD from HDMI driver Russell King
2015-05-27 10:43 ` Daniel Vetter
2015-05-27 11:43 ` Mark Brown
2015-05-27 17:31 ` Russell King - ARM Linux
2015-05-27 21:29 ` Daniel Vetter
2015-05-27 21:44 ` Russell King - ARM Linux
2015-05-28 6:43 ` Daniel Vetter
2015-05-28 4:56 ` [alsa-devel] " Takashi Iwai
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