From patchwork Tue Dec 23 20:49:34 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Antti Palosaari X-Patchwork-Id: 5535111 Return-Path: X-Original-To: patchwork-linux-media@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 8C51EBEEBA for ; Tue, 23 Dec 2014 20:51:09 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id C1B1A2011D for ; Tue, 23 Dec 2014 20:51:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C253D201BB for ; Tue, 23 Dec 2014 20:51:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756677AbaLWUvD (ORCPT ); Tue, 23 Dec 2014 15:51:03 -0500 Received: from mail.kapsi.fi ([217.30.184.167]:59990 "EHLO mail.kapsi.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756611AbaLWUue (ORCPT ); Tue, 23 Dec 2014 15:50:34 -0500 Received: from dyn3-82-128-190-202.psoas.suomi.net ([82.128.190.202] helo=localhost.localdomain.localdomain) by mail.kapsi.fi with esmtpsa (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.72) (envelope-from ) id 1Y3WPY-0004tE-U1; Tue, 23 Dec 2014 22:50:32 +0200 From: Antti Palosaari To: linux-media@vger.kernel.org Cc: Antti Palosaari Subject: [PATCH 41/66] rtl2832: use regmap reg cache Date: Tue, 23 Dec 2014 22:49:34 +0200 Message-Id: <1419367799-14263-41-git-send-email-crope@iki.fi> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1419367799-14263-1-git-send-email-crope@iki.fi> References: <1419367799-14263-1-git-send-email-crope@iki.fi> X-SA-Exim-Connect-IP: 82.128.190.202 X-SA-Exim-Mail-From: crope@iki.fi X-SA-Exim-Scanned: No (on mail.kapsi.fi); SAEximRunCond expanded to false Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Enable regmap register cache in order to reduce IO. Signed-off-by: Antti Palosaari --- drivers/media/dvb-frontends/rtl2832.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/media/dvb-frontends/rtl2832.c b/drivers/media/dvb-frontends/rtl2832.c index b8e7971..4b6e6e0 100644 --- a/drivers/media/dvb-frontends/rtl2832.c +++ b/drivers/media/dvb-frontends/rtl2832.c @@ -986,6 +986,22 @@ static struct dvb_frontend_ops rtl2832_ops = { .read_ber = rtl2832_read_ber, }; +static bool rtl2832_volatile_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case 0x305: + case 0x33c: + case 0x34e: + case 0x351: + case 0x40c ... 0x40d: + return true; + default: + break; + } + + return false; +} + /* * We implement own I2C access routines for regmap in order to get manual access * to I2C adapter lock, which is needed for I2C mux adapter. @@ -1240,9 +1256,11 @@ static int rtl2832_probe(struct i2c_client *client, static const struct regmap_config regmap_config = { .reg_bits = 8, .val_bits = 8, + .volatile_reg = rtl2832_volatile_reg, .max_register = 5 * 0x100, .ranges = regmap_range_cfg, .num_ranges = ARRAY_SIZE(regmap_range_cfg), + .cache_type = REGCACHE_RBTREE, }; dev_dbg(&client->dev, "\n");