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From: Faiz Abbas <faiz_abbas@ti.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v5 03/15] regmap: Add API regmap_init_mem_index()
Date: Wed, 29 May 2019 15:15:03 +0530	[thread overview]
Message-ID: <20190529094515.13517-4-faiz_abbas@ti.com> (raw)
In-Reply-To: <20190529094515.13517-1-faiz_abbas@ti.com>

In device nodes with more than one entry in the reg property,
it is sometimes useful to regmap only of the entries. Add an
API regmap_init_mem_index() to facilitate this.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
---
 drivers/core/regmap.c | 42 ++++++++++++++++++++++++++++++++++++++++++
 include/regmap.h      |  2 ++
 2 files changed, 44 insertions(+)

diff --git a/drivers/core/regmap.c b/drivers/core/regmap.c
index 5ef0f71c8b..d1d12eef38 100644
--- a/drivers/core/regmap.c
+++ b/drivers/core/regmap.c
@@ -108,6 +108,48 @@ static int init_range(ofnode node, struct regmap_range *range, int addr_len,
 	return 0;
 }
 
+int regmap_init_mem_index(ofnode node, struct regmap **mapp, int index)
+{
+	struct regmap *map;
+	int addr_len, size_len;
+	int ret;
+
+	addr_len = ofnode_read_simple_addr_cells(ofnode_get_parent(node));
+	if (addr_len < 0) {
+		debug("%s: Error while reading the addr length (ret = %d)\n",
+		      ofnode_get_name(node), addr_len);
+		return addr_len;
+	}
+
+	size_len = ofnode_read_simple_size_cells(ofnode_get_parent(node));
+	if (size_len < 0) {
+		debug("%s: Error while reading the size length: (ret = %d)\n",
+		      ofnode_get_name(node), size_len);
+		return size_len;
+	}
+
+	map = regmap_alloc(1);
+	if (!map)
+		return -ENOMEM;
+
+	ret = init_range(node, map->ranges, addr_len, size_len, index);
+	if (ret)
+		return ret;
+
+	if (ofnode_read_bool(node, "little-endian"))
+		map->endianness = REGMAP_LITTLE_ENDIAN;
+	else if (ofnode_read_bool(node, "big-endian"))
+		map->endianness = REGMAP_BIG_ENDIAN;
+	else if (ofnode_read_bool(node, "native-endian"))
+		map->endianness = REGMAP_NATIVE_ENDIAN;
+	else /* Default: native endianness */
+		map->endianness = REGMAP_NATIVE_ENDIAN;
+
+	*mapp = map;
+
+	return ret;
+}
+
 int regmap_init_mem(ofnode node, struct regmap **mapp)
 {
 	struct regmap_range *range;
diff --git a/include/regmap.h b/include/regmap.h
index 3cd7a66cea..0854200a9c 100644
--- a/include/regmap.h
+++ b/include/regmap.h
@@ -330,6 +330,8 @@ int regmap_init_mem(ofnode node, struct regmap **mapp);
 int regmap_init_mem_platdata(struct udevice *dev, fdt_val_t *reg, int count,
 			     struct regmap **mapp);
 
+int regmap_init_mem_index(ofnode node, struct regmap **mapp, int index);
+
 /**
  * regmap_get_range() - Obtain the base memory address of a regmap range
  *
-- 
2.19.2

  parent reply	other threads:[~2019-05-29  9:45 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-29  9:45 [U-Boot] [PATCH v5 00/15] Add Support for eMMC in Am65x-evm Faiz Abbas
2019-05-29  9:45 ` [U-Boot] [PATCH v5 01/15] arm64: dts: k3: Sync sdhci0 node from kernel and change driver name Faiz Abbas
2019-06-04  5:28   ` Lokesh Vutla
2019-06-04 13:12     ` Faiz Abbas
2019-05-29  9:45 ` [U-Boot] [PATCH v5 02/15] mmc: am654_sdhci: Remove quirks Faiz Abbas
2019-05-29  9:45 ` Faiz Abbas [this message]
2019-05-29  9:45 ` [U-Boot] [PATCH v5 04/15] mmc: sdhci: Add support for sdhci-caps-mask Faiz Abbas
2019-05-29  9:45 ` [U-Boot] [PATCH v5 05/15] mmc: sdhci: Make sdhci_set_clock() non static Faiz Abbas
2019-05-29  9:45 ` [U-Boot] [PATCH v5 06/15] arm: dts: k3: Add phy specific properties to SD card node Faiz Abbas
2019-05-29  9:45 ` [U-Boot] [PATCH v5 07/15] mmc: sdhci: Make set_ios_post() return int Faiz Abbas
2019-05-29  9:45 ` [U-Boot] [PATCH v5 08/15] mmc: am654_sdhci: Add Support for PHY Faiz Abbas
2019-05-29  9:45 ` [U-Boot] [PATCH v5 09/15] configs: am65x_evm: Enable CONFIG_REGMAP Faiz Abbas
2019-05-29  9:45 ` [U-Boot] [PATCH v5 10/15] mmc: am654_sdhci: Use f_max in mmc_config Faiz Abbas
2019-05-29  9:45 ` [U-Boot] [PATCH v5 11/15] mmc: sdhci: Add support for HOST_CONTROL2 and setting UHS timings Faiz Abbas
2019-05-29  9:45 ` [U-Boot] [PATCH v5 12/15] mmc: am654_sdhci: Add a platform specific set_control_reg() callback Faiz Abbas
2019-05-29  9:45 ` [U-Boot] [PATCH v5 13/15] configs: am65x: Add configs to support environment in eMMC Faiz Abbas
2019-05-29  9:45 ` [U-Boot] [PATCH v5 14/15] am65x_evm: Add Support for creating a filesystem GPT partition " Faiz Abbas
2019-05-29  9:45 ` [U-Boot] [PATCH v5 15/15] configs: am65x_evm_a53: Add Support for creating GPT partitions Faiz Abbas

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