From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CF0ACC47427 for ; Wed, 30 Sep 2020 15:30:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6D54A21D7F for ; Wed, 30 Sep 2020 15:30:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731202AbgI3Pag (ORCPT ); Wed, 30 Sep 2020 11:30:36 -0400 Received: from retiisi.org.uk ([95.216.213.190]:44632 "EHLO hillosipuli.retiisi.eu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725892AbgI3P3B (ORCPT ); Wed, 30 Sep 2020 11:29:01 -0400 X-Greylist: delayed 2446 seconds by postgrey-1.27 at vger.kernel.org; Wed, 30 Sep 2020 11:29:00 EDT Received: from lanttu.localdomain (lanttu-e.localdomain [192.168.1.64]) by hillosipuli.retiisi.eu (Postfix) with ESMTP id 3E27A634C8D for ; Wed, 30 Sep 2020 18:28:46 +0300 (EEST) From: Sakari Ailus To: linux-media@vger.kernel.org Subject: [PATCH 003/100] smiapp: Calculate CCS limit offsets and limit buffer size Date: Wed, 30 Sep 2020 18:27:21 +0300 Message-Id: <20200930152858.8471-4-sakari.ailus@linux.intel.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200930152858.8471-1-sakari.ailus@linux.intel.com> References: <20200930152858.8471-1-sakari.ailus@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Calculate the limit offsets and the size of the limit buffer. CCS limits are read into this buffer, and the offsets are helpful in accessing the information in it. Signed-off-by: Sakari Ailus --- drivers/media/i2c/smiapp/smiapp-core.c | 40 +++++++++++++++++++++++++- 1 file changed, 39 insertions(+), 1 deletion(-) diff --git a/drivers/media/i2c/smiapp/smiapp-core.c b/drivers/media/i2c/smiapp/smiapp-core.c index 105ef29152e8..47e983e9cd87 100644 --- a/drivers/media/i2c/smiapp/smiapp-core.c +++ b/drivers/media/i2c/smiapp/smiapp-core.c @@ -27,6 +27,7 @@ #include #include +#include "ccs-limits.h" #include "smiapp.h" #define SMIAPP_ALIGN_DIM(dim, flags) \ @@ -34,6 +35,11 @@ ? ALIGN((dim), 2) \ : (dim) & ~1) +struct ccs_limit_offset { + u16 lim; + u16 info; +} ccs_limit_offsets[CCS_L_LAST + 1]; + /* * smiapp_module_idents - supported camera modules */ @@ -3166,7 +3172,39 @@ static struct i2c_driver smiapp_i2c_driver = { .id_table = smiapp_id_table, }; -module_i2c_driver(smiapp_i2c_driver); +static int smiapp_module_init(void) +{ + unsigned int i, l; + + for (i = 0, l = 0; ccs_limits[i].size && l < CCS_L_LAST; i++) { + if (!(ccs_limits[i].flags & CCS_L_FL_SAME_REG)) { + ccs_limit_offsets[l + 1].lim = + ALIGN(ccs_limit_offsets[l].lim + + ccs_limits[i].size, + ccs_reg_width(ccs_limits[i + 1].reg)); + ccs_limit_offsets[l].info = i; + l++; + } else { + ccs_limit_offsets[l].lim += ccs_limits[i].size; + } + } + + if (WARN_ON(ccs_limits[i].size)) + return -EINVAL; + + if (WARN_ON(l != CCS_L_LAST)) + return -EINVAL; + + return i2c_register_driver(THIS_MODULE, &smiapp_i2c_driver); +} + +static void smiapp_module_cleanup(void) +{ + i2c_del_driver(&smiapp_i2c_driver); +} + +module_init(smiapp_module_init); +module_exit(smiapp_module_cleanup); MODULE_AUTHOR("Sakari Ailus "); MODULE_DESCRIPTION("Generic SMIA/SMIA++ camera module driver"); -- 2.27.0