summaryrefslogtreecommitdiff
path: root/drivers/misc/i2c_eeprom.c
diff options
context:
space:
mode:
authorTom Rini <trini@konsulko.com>2020-01-06 17:07:49 -0500
committerTom Rini <trini@konsulko.com>2020-01-06 17:07:49 -0500
commit5a8fa095cb848c60c630a83edf30d4fc46101e90 (patch)
tree66652768520899ddea6a24a608c1be4ed6ecfcde /drivers/misc/i2c_eeprom.c
parent0b0c6af38738f2c132cfd41a240889acaa031c8f (diff)
parent8fbbec12f7d2c18f8883f3371cfca74a98b5dd87 (diff)
downloadu-boot-5a8fa095cb848c60c630a83edf30d4fc46101e90.tar.gz
Merge branch 'next'WIP/06Jan2020
Bring in the following merges: commit 8fbbec12f7d2c18f8883f3371cfca74a98b5dd87 Merge: 87f69f467a83 63618e71e89b Author: Tom Rini <trini@konsulko.com> Date: Fri Jan 3 09:48:47 2020 -0500 Merge https://gitlab.denx.de/u-boot/custodians/u-boot-fsl-qoriq into next - updates and fixes on ls1028a, lx2, ls1046a, MC-DPSPARSER support commit 87f69f467a8335b171c71bf217d2625d515acd7c Merge: c0912f9bbfb2 4466b9970319 Author: Tom Rini <trini@konsulko.com> Date: Tue Dec 24 08:18:19 2019 -0500 Merge https://gitlab.denx.de/u-boot/custodians/u-boot-mpc85xx into next - Enable DM driver on ppc/km boards - Enable DM_USB for some of NXP powerpc platforms: P5040, T4240, T208x, T104x, P4080, P2041, P2020, P1020, P3041 - Some updates in mpc85xx-ddr driver, km boards commit c0912f9bbfb26dd03d189953678691b799d35b6e Merge: 533c9f5714bd a1d6dc3f8407 Author: Tom Rini <trini@konsulko.com> Date: Wed Dec 18 07:20:19 2019 -0500 Merge branch 'next' of https://gitlab.denx.de/u-boot/custodians/u-boot-x86 into next - Various x86 common codes updated for TPL/SPL - I2C designware driver updated for PCI - ICH SPI driver updated to support Apollo Lake - Add Intel FSP2 base support - Intel Apollo Lake platform specific drivers support - Add a new board Google Chromebook Coral commit 533c9f5714bdba79dc6f2629284d4c1a08a611d1 Merge: 553cb0688782 033e18b47bd0 Author: Tom Rini <trini@konsulko.com> Date: Tue Dec 17 07:53:08 2019 -0500 Merge tag '20191217-for-next' of https://gitlab.denx.de/u-boot/custodians/u-boot-i2c into next i2c: for next - misc: i2c_eeprom: Add partition support and add ability to query size of eeprom device and partitions - i2c common: add support for offset overflow in to address and add sandbox tests for it. commit 553cb06887825314e74a9bdac337467c77d1db88 Merge: f39abbbc531e b4f98b3b16ec Author: Tom Rini <trini@konsulko.com> Date: Thu Dec 12 08:18:59 2019 -0500 Merge tag 'dm-next-13dec19' of https://gitlab.denx.de/u-boot/custodians/u-boot-dm into next buildman improvements including toolchain environment feature sandbox unicode support in serial
Diffstat (limited to 'drivers/misc/i2c_eeprom.c')
-rw-r--r--drivers/misc/i2c_eeprom.c243
1 files changed, 224 insertions, 19 deletions
diff --git a/drivers/misc/i2c_eeprom.c b/drivers/misc/i2c_eeprom.c
index 3755dbf74b..934f82074d 100644
--- a/drivers/misc/i2c_eeprom.c
+++ b/drivers/misc/i2c_eeprom.c
@@ -8,9 +8,15 @@
#include <linux/err.h>
#include <linux/kernel.h>
#include <dm.h>
+#include <dm/device-internal.h>
#include <i2c.h>
#include <i2c_eeprom.h>
+struct i2c_eeprom_drv_data {
+ u32 size; /* size in bytes */
+ u32 pagewidth; /* pagesize = 2^pagewidth */
+};
+
int i2c_eeprom_read(struct udevice *dev, int offset, uint8_t *buf, int size)
{
const struct i2c_eeprom_ops *ops = device_get_ops(dev);
@@ -31,6 +37,16 @@ int i2c_eeprom_write(struct udevice *dev, int offset, uint8_t *buf, int size)
return ops->write(dev, offset, buf, size);
}
+int i2c_eeprom_size(struct udevice *dev)
+{
+ const struct i2c_eeprom_ops *ops = device_get_ops(dev);
+
+ if (!ops->size)
+ return -ENOSYS;
+
+ return ops->size(dev);
+}
+
static int i2c_eeprom_std_read(struct udevice *dev, int offset, uint8_t *buf,
int size)
{
@@ -60,25 +76,62 @@ static int i2c_eeprom_std_write(struct udevice *dev, int offset,
return 0;
}
+static int i2c_eeprom_std_size(struct udevice *dev)
+{
+ struct i2c_eeprom *priv = dev_get_priv(dev);
+
+ return priv->size;
+}
+
static const struct i2c_eeprom_ops i2c_eeprom_std_ops = {
.read = i2c_eeprom_std_read,
.write = i2c_eeprom_std_write,
+ .size = i2c_eeprom_std_size,
};
static int i2c_eeprom_std_ofdata_to_platdata(struct udevice *dev)
{
struct i2c_eeprom *priv = dev_get_priv(dev);
- u64 data = dev_get_driver_data(dev);
+ struct i2c_eeprom_drv_data *data =
+ (struct i2c_eeprom_drv_data *)dev_get_driver_data(dev);
u32 pagesize;
+ u32 size;
if (dev_read_u32(dev, "pagesize", &pagesize) == 0) {
priv->pagesize = pagesize;
- return 0;
+ } else {
+ /* 6 bit -> page size of up to 2^63 (should be sufficient) */
+ priv->pagewidth = data->pagewidth;
+ priv->pagesize = (1 << priv->pagewidth);
}
- /* 6 bit -> page size of up to 2^63 (should be sufficient) */
- priv->pagewidth = data & 0x3F;
- priv->pagesize = (1 << priv->pagewidth);
+ if (dev_read_u32(dev, "size", &size) == 0)
+ priv->size = size;
+ else
+ priv->size = data->size;
+
+ return 0;
+}
+
+static int i2c_eeprom_std_bind(struct udevice *dev)
+{
+ ofnode partitions = ofnode_find_subnode(dev_ofnode(dev), "partitions");
+ ofnode partition;
+ const char *name;
+
+ if (!ofnode_valid(partitions))
+ return 0;
+ if (!ofnode_device_is_compatible(partitions, "fixed-partitions"))
+ return -ENOTSUPP;
+
+ ofnode_for_each_subnode(partition, partitions) {
+ name = ofnode_get_name(partition);
+ if (!name)
+ continue;
+
+ device_bind_ofnode(dev, DM_GET_DRIVER(i2c_eeprom_partition),
+ name, NULL, partition, NULL);
+ }
return 0;
}
@@ -96,21 +149,91 @@ static int i2c_eeprom_std_probe(struct udevice *dev)
return 0;
}
+static const struct i2c_eeprom_drv_data eeprom_data = {
+ .size = 0,
+ .pagewidth = 0,
+};
+
+static const struct i2c_eeprom_drv_data mc24aa02e48_data = {
+ .size = 256,
+ .pagewidth = 3,
+};
+
+static const struct i2c_eeprom_drv_data atmel24c01a_data = {
+ .size = 128,
+ .pagewidth = 3,
+};
+
+static const struct i2c_eeprom_drv_data atmel24c02_data = {
+ .size = 256,
+ .pagewidth = 3,
+};
+
+static const struct i2c_eeprom_drv_data atmel24c04_data = {
+ .size = 512,
+ .pagewidth = 4,
+};
+
+static const struct i2c_eeprom_drv_data atmel24c08_data = {
+ .size = 1024,
+ .pagewidth = 4,
+};
+
+static const struct i2c_eeprom_drv_data atmel24c08a_data = {
+ .size = 1024,
+ .pagewidth = 4,
+};
+
+static const struct i2c_eeprom_drv_data atmel24c16a_data = {
+ .size = 2048,
+ .pagewidth = 4,
+};
+
+static const struct i2c_eeprom_drv_data atmel24mac402_data = {
+ .size = 256,
+ .pagewidth = 4,
+};
+
+static const struct i2c_eeprom_drv_data atmel24c32_data = {
+ .size = 4096,
+ .pagewidth = 5,
+};
+
+static const struct i2c_eeprom_drv_data atmel24c64_data = {
+ .size = 8192,
+ .pagewidth = 5,
+};
+
+static const struct i2c_eeprom_drv_data atmel24c128_data = {
+ .size = 16384,
+ .pagewidth = 6,
+};
+
+static const struct i2c_eeprom_drv_data atmel24c256_data = {
+ .size = 32768,
+ .pagewidth = 6,
+};
+
+static const struct i2c_eeprom_drv_data atmel24c512_data = {
+ .size = 65536,
+ .pagewidth = 6,
+};
+
static const struct udevice_id i2c_eeprom_std_ids[] = {
- { .compatible = "i2c-eeprom", .data = 0 },
- { .compatible = "microchip,24aa02e48", .data = 3 },
- { .compatible = "atmel,24c01a", .data = 3 },
- { .compatible = "atmel,24c02", .data = 3 },
- { .compatible = "atmel,24c04", .data = 4 },
- { .compatible = "atmel,24c08", .data = 4 },
- { .compatible = "atmel,24c08a", .data = 4 },
- { .compatible = "atmel,24c16a", .data = 4 },
- { .compatible = "atmel,24mac402", .data = 4 },
- { .compatible = "atmel,24c32", .data = 5 },
- { .compatible = "atmel,24c64", .data = 5 },
- { .compatible = "atmel,24c128", .data = 6 },
- { .compatible = "atmel,24c256", .data = 6 },
- { .compatible = "atmel,24c512", .data = 6 },
+ { .compatible = "i2c-eeprom", (ulong)&eeprom_data },
+ { .compatible = "microchip,24aa02e48", (ulong)&mc24aa02e48_data },
+ { .compatible = "atmel,24c01a", (ulong)&atmel24c01a_data },
+ { .compatible = "atmel,24c02", (ulong)&atmel24c02_data },
+ { .compatible = "atmel,24c04", (ulong)&atmel24c04_data },
+ { .compatible = "atmel,24c08", (ulong)&atmel24c08_data },
+ { .compatible = "atmel,24c08a", (ulong)&atmel24c08a_data },
+ { .compatible = "atmel,24c16a", (ulong)&atmel24c16a_data },
+ { .compatible = "atmel,24mac402", (ulong)&atmel24mac402_data },
+ { .compatible = "atmel,24c32", (ulong)&atmel24c32_data },
+ { .compatible = "atmel,24c64", (ulong)&atmel24c64_data },
+ { .compatible = "atmel,24c128", (ulong)&atmel24c128_data },
+ { .compatible = "atmel,24c256", (ulong)&atmel24c256_data },
+ { .compatible = "atmel,24c512", (ulong)&atmel24c512_data },
{ }
};
@@ -118,12 +241,94 @@ U_BOOT_DRIVER(i2c_eeprom_std) = {
.name = "i2c_eeprom",
.id = UCLASS_I2C_EEPROM,
.of_match = i2c_eeprom_std_ids,
+ .bind = i2c_eeprom_std_bind,
.probe = i2c_eeprom_std_probe,
.ofdata_to_platdata = i2c_eeprom_std_ofdata_to_platdata,
.priv_auto_alloc_size = sizeof(struct i2c_eeprom),
.ops = &i2c_eeprom_std_ops,
};
+struct i2c_eeprom_partition {
+ u32 offset;
+ u32 size;
+};
+
+static int i2c_eeprom_partition_probe(struct udevice *dev)
+{
+ return 0;
+}
+
+static int i2c_eeprom_partition_ofdata_to_platdata(struct udevice *dev)
+{
+ struct i2c_eeprom_partition *priv = dev_get_priv(dev);
+ u32 offset, size;
+ int ret;
+
+ ret = dev_read_u32(dev, "offset", &offset);
+ if (ret)
+ return ret;
+
+ ret = dev_read_u32(dev, "size", &size);
+ if (ret)
+ return ret;
+
+ priv->offset = offset;
+ priv->size = size;
+
+ return 0;
+}
+
+static int i2c_eeprom_partition_read(struct udevice *dev, int offset,
+ u8 *buf, int size)
+{
+ struct i2c_eeprom_partition *priv = dev_get_priv(dev);
+ struct udevice *parent = dev_get_parent(dev);
+
+ if (!parent)
+ return -ENODEV;
+ if (offset + size > priv->size)
+ return -EINVAL;
+
+ return i2c_eeprom_read(parent, offset + priv->offset, buf, size);
+}
+
+static int i2c_eeprom_partition_write(struct udevice *dev, int offset,
+ const u8 *buf, int size)
+{
+ struct i2c_eeprom_partition *priv = dev_get_priv(dev);
+ struct udevice *parent = dev_get_parent(dev);
+
+ if (!parent)
+ return -ENODEV;
+ if (offset + size > priv->size)
+ return -EINVAL;
+
+ return i2c_eeprom_write(parent, offset + priv->offset, (uint8_t *)buf,
+ size);
+}
+
+static int i2c_eeprom_partition_size(struct udevice *dev)
+{
+ struct i2c_eeprom_partition *priv = dev_get_priv(dev);
+
+ return priv->size;
+}
+
+static const struct i2c_eeprom_ops i2c_eeprom_partition_ops = {
+ .read = i2c_eeprom_partition_read,
+ .write = i2c_eeprom_partition_write,
+ .size = i2c_eeprom_partition_size,
+};
+
+U_BOOT_DRIVER(i2c_eeprom_partition) = {
+ .name = "i2c_eeprom_partition",
+ .id = UCLASS_I2C_EEPROM,
+ .probe = i2c_eeprom_partition_probe,
+ .ofdata_to_platdata = i2c_eeprom_partition_ofdata_to_platdata,
+ .priv_auto_alloc_size = sizeof(struct i2c_eeprom_partition),
+ .ops = &i2c_eeprom_partition_ops,
+};
+
UCLASS_DRIVER(i2c_eeprom) = {
.id = UCLASS_I2C_EEPROM,
.name = "i2c_eeprom",