From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932136AbbALSuF (ORCPT ); Mon, 12 Jan 2015 13:50:05 -0500 Received: from youngberry.canonical.com ([91.189.89.112]:58207 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753757AbbALSaX (ORCPT ); Mon, 12 Jan 2015 13:30:23 -0500 From: Luis Henriques To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com Cc: Peter Rosin , Mark Brown , Luis Henriques Subject: [PATCH 3.16.y-ckt 160/216] ASoC: pcm512x: Trigger auto-increment of register addresses on i2c Date: Mon, 12 Jan 2015 18:28:58 +0000 Message-Id: <1421087394-2712-48-git-send-email-luis.henriques@canonical.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1421085933-32536-1-git-send-email-luis.henriques@canonical.com> References: <1421085933-32536-1-git-send-email-luis.henriques@canonical.com> X-Extended-Stable: 3.16 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.16.7-ckt4 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Peter Rosin commit 681a19560378213a193c424881b2180a783b81ae upstream. When the codec is connected using i2c, it will only auto-increment register addresses if msb (0x80) of the register address byte is set. [Fixes cache sync if multiple adjacent registers are updated -- broonie] Signed-off-by: Peter Rosin Signed-off-by: Mark Brown Signed-off-by: Luis Henriques --- sound/soc/codecs/pcm512x-i2c.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/sound/soc/codecs/pcm512x-i2c.c b/sound/soc/codecs/pcm512x-i2c.c index 4d62230bd378..d0547fa275fc 100644 --- a/sound/soc/codecs/pcm512x-i2c.c +++ b/sound/soc/codecs/pcm512x-i2c.c @@ -24,8 +24,13 @@ static int pcm512x_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { struct regmap *regmap; + struct regmap_config config = pcm512x_regmap; - regmap = devm_regmap_init_i2c(i2c, &pcm512x_regmap); + /* msb needs to be set to enable auto-increment of addresses */ + config.read_flag_mask = 0x80; + config.write_flag_mask = 0x80; + + regmap = devm_regmap_init_i2c(i2c, &config); if (IS_ERR(regmap)) return PTR_ERR(regmap); -- 2.1.4