From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from vsp-unauthed02.binero.net ([195.74.38.227]:39383 "EHLO bin-vsp-out-01.atm.binero.net" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1164156AbeCBB7Y (ORCPT ); Thu, 1 Mar 2018 20:59:24 -0500 From: =?UTF-8?q?Niklas=20S=C3=B6derlund?= To: Laurent Pinchart , Hans Verkuil , linux-media@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org, tomoharu.fukawa.eb@renesas.com, Kieran Bingham , =?UTF-8?q?Niklas=20S=C3=B6derlund?= Subject: [PATCH v11 26/32] rcar-vin: add chsel information to rvin_info Date: Fri, 2 Mar 2018 02:57:45 +0100 Message-Id: <20180302015751.25596-27-niklas.soderlund+renesas@ragnatech.se> In-Reply-To: <20180302015751.25596-1-niklas.soderlund+renesas@ragnatech.se> References: <20180302015751.25596-1-niklas.soderlund+renesas@ragnatech.se> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-media-owner@vger.kernel.org List-ID: Each Gen3 SoC has a limited set of predefined routing possibilities for which CSI-2 device and channel can be routed to which VIN instance. Prepare to store this information in the struct rvin_info. Signed-off-by: Niklas Söderlund --- drivers/media/platform/rcar-vin/rcar-vin.h | 42 ++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) diff --git a/drivers/media/platform/rcar-vin/rcar-vin.h b/drivers/media/platform/rcar-vin/rcar-vin.h index 07cde9e1ab01ca51..6150a883e17f8479 100644 --- a/drivers/media/platform/rcar-vin/rcar-vin.h +++ b/drivers/media/platform/rcar-vin/rcar-vin.h @@ -43,6 +43,14 @@ enum model_id { RCAR_GEN3, }; +enum rvin_csi_id { + RVIN_CSI20, + RVIN_CSI21, + RVIN_CSI40, + RVIN_CSI41, + RVIN_CSI_MAX, +}; + /** * STOPPED - No operation in progress * RUNNING - Operation in progress have buffers @@ -81,12 +89,45 @@ struct rvin_graph_entity { unsigned int sink_pad; }; +/** + * struct rvin_group_route - describes a route from a channel of a + * CSI-2 receiver to a VIN + * + * @vin: VIN ID. + * @csi: CSI-2 receiver ID. + * @chan: Output channel of the CSI-2 receiver. + * @mask: Bitmask of the different CHSEL register values that + * allows for a route from @csi + @chan to @vin. + * + * .. note:: + * Each R-Car CSI-2 receiver has four output channels facing the VIN + * devices, each channel can carry one CSI-2 Virtual Channel (VC). + * There are no correlation between channel number and CSI-2 VC. It's + * up to the CSI-2 receiver driver to configure which VC is output + * on which channel, the VIN devices only care about output channels. + * + * There are in some cases multiple CHSEL register settings which would + * allow for the same route from @csi + @chan to @vin. For example + * on R-Car H3 both the CHSEL values 0 and 3 allows for a route from + * CSI40/VC0 to VIN0. All possible CHSEL values for a route need to be + * recorded as a bitmask in @mask, in this example bit 0 and 3 should + * be set. + */ +struct rvin_group_route { + unsigned int vin; + enum rvin_csi_id csi; + unsigned char chan; + unsigned int mask; +}; + /** * struct rvin_info - Information about the particular VIN implementation * @model: VIN model * @use_mc: use media controller instead of controlling subdevice * @max_width: max input width the VIN supports * @max_height: max input height the VIN supports + * @routes: list of possible routes from the CSI-2 recivers to + * all VINs. The list mush be NULL terminated. */ struct rvin_info { enum model_id model; @@ -94,6 +135,7 @@ struct rvin_info { unsigned int max_width; unsigned int max_height; + const struct rvin_group_route *routes; }; /** -- 2.16.2