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=-12.8 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 1C6B4C4727E for ; Wed, 7 Oct 2020 08:46:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C567F20870 for ; Wed, 7 Oct 2020 08:45:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727932AbgJGIp7 (ORCPT ); Wed, 7 Oct 2020 04:45:59 -0400 Received: from retiisi.org.uk ([95.216.213.190]:57022 "EHLO hillosipuli.retiisi.eu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727926AbgJGIp6 (ORCPT ); Wed, 7 Oct 2020 04:45:58 -0400 Received: from lanttu.localdomain (lanttu-e.localdomain [192.168.1.64]) by hillosipuli.retiisi.eu (Postfix) with ESMTP id B86FA634C8C for ; Wed, 7 Oct 2020 11:45:15 +0300 (EEST) From: Sakari Ailus To: linux-media@vger.kernel.org Subject: [PATCH v2 003/106] smiapp: Calculate CCS limit offsets and limit buffer size Date: Wed, 7 Oct 2020 11:44:23 +0300 Message-Id: <20201007084557.25843-3-sakari.ailus@linux.intel.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20201007084557.25843-1-sakari.ailus@linux.intel.com> References: <20201007084505.25761-1-sakari.ailus@linux.intel.com> <20201007084557.25843-1-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