Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753249AbbH3Heu (ORCPT ); Sun, 30 Aug 2015 03:34:50 -0400 Received: from metis.ext.pengutronix.de ([92.198.50.35]:36550 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752777AbbH3Hea (ORCPT ); Sun, 30 Aug 2015 03:34:30 -0400 From: Markus Pargmann To: Mark Brown Cc: Wolfram Sang , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kernel@pengutronix.de, Irina Tirdea , Markus Pargmann Subject: [PATCH v4 2/4] regmap: regmap max_raw_read/write getter functions Date: Sun, 30 Aug 2015 09:33:54 +0200 Message-Id: <1440920036-17517-3-git-send-email-mpa@pengutronix.de> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1440920036-17517-1-git-send-email-mpa@pengutronix.de> References: <1440920036-17517-1-git-send-email-mpa@pengutronix.de> X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: mpa@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2238 Lines: 68 Add functions to access the maximum size we can read/write using regmap_raw_read/write(). This helps drivers that need to know how much they can write with the raw functions without problems. There are some devices (e.g. bmc150) that have fifos as registers which need to be read in specific chunks otherwise samples are dropped. Signed-off-by: Markus Pargmann --- drivers/base/regmap/regmap.c | 22 ++++++++++++++++++++++ include/linux/regmap.h | 2 ++ 2 files changed, 24 insertions(+) diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index 7674ceb61251..fc8084033982 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -1378,6 +1378,28 @@ bool regmap_can_raw_write(struct regmap *map) } EXPORT_SYMBOL_GPL(regmap_can_raw_write); +/** + * regmap_get_raw_read_max - Get the maximum size we can read + * + * @map: Map to check. + */ +size_t regmap_get_raw_read_max(struct regmap *map) +{ + return map->max_raw_read; +} +EXPORT_SYMBOL_GPL(regmap_get_raw_read_max); + +/** + * regmap_get_raw_write_max - Get the maximum size we can read + * + * @map: Map to check. + */ +size_t regmap_get_raw_write_max(struct regmap *map) +{ + return map->max_raw_write; +} +EXPORT_SYMBOL_GPL(regmap_get_raw_write_max); + static int _regmap_bus_formatted_write(void *context, unsigned int reg, unsigned int val) { diff --git a/include/linux/regmap.h b/include/linux/regmap.h index c77601c2445e..8fc0bfd8edc4 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -705,6 +705,8 @@ int regmap_get_max_register(struct regmap *map); int regmap_get_reg_stride(struct regmap *map); int regmap_async_complete(struct regmap *map); bool regmap_can_raw_write(struct regmap *map); +size_t regmap_get_raw_read_max(struct regmap *map); +size_t regmap_get_raw_write_max(struct regmap *map); int regcache_sync(struct regmap *map); int regcache_sync_region(struct regmap *map, unsigned int min, -- 2.5.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/