From mboxrd@z Thu Jan 1 00:00:00 1970 From: Simon Glass Date: Sun, 12 Jun 2016 23:33:21 -0600 Subject: [U-Boot] [PATCH v2 40/55] dm: core: Add an implementation of regmap_init_mem_platdata() In-Reply-To: <1465796016-18375-1-git-send-email-sjg@chromium.org> References: <1465796016-18375-1-git-send-email-sjg@chromium.org> Message-ID: <1465796016-18375-41-git-send-email-sjg@chromium.org> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Add an implementation of this function which mirrors the functions of the automatic device-tree implementation. This can be used with of-platdata to create regmaps. Signed-off-by: Simon Glass --- Changes in v2: None drivers/core/regmap.c | 18 ++++++++++++++++-- include/regmap.h | 15 ++++++++++++++- 2 files changed, 30 insertions(+), 3 deletions(-) diff --git a/drivers/core/regmap.c b/drivers/core/regmap.c index dcb1a30..0299ff0 100644 --- a/drivers/core/regmap.c +++ b/drivers/core/regmap.c @@ -37,10 +37,24 @@ static struct regmap *regmap_alloc_count(int count) } #if CONFIG_IS_ENABLED(OF_PLATDATA) -int regmap_init_mem_platdata(struct udevice *dev, fdt32_t *reg, int size, +int regmap_init_mem_platdata(struct udevice *dev, u32 *reg, int count, struct regmap **mapp) { - /* TODO(sjg at chromium.org): Implement this when needed */ + struct regmap_range *range; + struct regmap *map; + + map = regmap_alloc_count(count); + if (!map) + return -ENOMEM; + + map->base = *reg; + for (range = map->range; count > 0; reg += 2, range++, count--) { + range->start = *reg; + range->size = reg[1]; + } + + *mapp = map; + return 0; } #else diff --git a/include/regmap.h b/include/regmap.h index 922b39f..1eed94e 100644 --- a/include/regmap.h +++ b/include/regmap.h @@ -56,7 +56,20 @@ int regmap_read(struct regmap *map, uint offset, uint *valp); */ int regmap_init_mem(struct udevice *dev, struct regmap **mapp); -int regmap_init_mem_platdata(struct udevice *dev, fdt32_t *reg, int size, +/** + * regmap_init_mem_platdata() - Set up a new memory register map for of-platdata + * + * This creates a new regmap with a list of regions passed in, rather than + * using the device tree. It only supports 32-bit machines. + * + * Use regmap_uninit() to free it. + * + * @dev: Device that uses this map + * @reg: List of address, size pairs + * @count: Number of pairs (e.g. 1 if the regmap has a single entry) + * @mapp: Returns allocated map + */ +int regmap_init_mem_platdata(struct udevice *dev, u32 *reg, int count, struct regmap **mapp); /** -- 2.8.0.rc3.226.g39d4020