From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kevin Cernekee Subject: [PATCH V4 1/5] regmap: Add a helper function for regcache sync test Date: Tue, 5 May 2015 15:14:13 -0700 Message-ID: <1430864057-3848-2-git-send-email-cernekee@chromium.org> References: <1430864057-3848-1-git-send-email-cernekee@chromium.org> Return-path: In-Reply-To: <1430864057-3848-1-git-send-email-cernekee-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: lgirdwood-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org Cc: lars-Qo5EllUWu/uELgA04lAiVw@public.gmane.org, dgreid-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org, abrestic-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org, olofj-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org, alsa-devel-K7yf7f+aM1XWsZ/bQMPhNw@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: devicetree@vger.kernel.org We're going to add another "does this register need syncing?" check, so rather than repeating it in three places, we'll separate all of the relevant logic into a helper function. Signed-off-by: Kevin Cernekee --- drivers/base/regmap/regcache.c | 26 +++++++++++++++----------- 1 file changed, 15 insertions(+), 11 deletions(-) diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c index 7eb7b3b98794..c58493eaf050 100644 --- a/drivers/base/regmap/regcache.c +++ b/drivers/base/regmap/regcache.c @@ -249,6 +249,18 @@ int regcache_write(struct regmap *map, return 0; } +static bool regcache_reg_needs_sync(struct regmap *map, unsigned int reg, + unsigned int val) +{ + int ret; + + /* Is this the hardware default? If so skip. */ + ret = regcache_lookup_reg(map, reg); + if (ret >= 0 && val == map->reg_defaults[ret].def) + return false; + return true; +} + static int regcache_default_sync(struct regmap *map, unsigned int min, unsigned int max) { @@ -266,9 +278,7 @@ static int regcache_default_sync(struct regmap *map, unsigned int min, if (ret) return ret; - /* Is this the hardware default? If so skip. */ - ret = regcache_lookup_reg(map, reg); - if (ret >= 0 && val == map->reg_defaults[ret].def) + if (!regcache_reg_needs_sync(map, reg, val)) continue; map->cache_bypass = 1; @@ -613,10 +623,7 @@ static int regcache_sync_block_single(struct regmap *map, void *block, continue; val = regcache_get_val(map, block, i); - - /* Is this the hardware default? If so skip. */ - ret = regcache_lookup_reg(map, regtmp); - if (ret >= 0 && val == map->reg_defaults[ret].def) + if (!regcache_reg_needs_sync(map, regtmp, val)) continue; map->cache_bypass = 1; @@ -688,10 +695,7 @@ static int regcache_sync_block_raw(struct regmap *map, void *block, } val = regcache_get_val(map, block, i); - - /* Is this the hardware default? If so skip. */ - ret = regcache_lookup_reg(map, regtmp); - if (ret >= 0 && val == map->reg_defaults[ret].def) { + if (!regcache_reg_needs_sync(map, regtmp, val)) { ret = regcache_sync_block_raw_flush(map, &data, base, regtmp); if (ret != 0) -- 2.2.0.rc0.207.ga3a616c -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html