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path: root/drivers/misc/eeprom
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Diffstat (limited to 'drivers/misc/eeprom')
-rw-r--r--drivers/misc/eeprom/eeprom.c2
-rw-r--r--drivers/misc/eeprom/eeprom_93xx46.c24
-rw-r--r--drivers/misc/eeprom/idt_89hpesx.c126
-rw-r--r--drivers/misc/eeprom/max6875.c2
4 files changed, 64 insertions, 90 deletions
diff --git a/drivers/misc/eeprom/eeprom.c b/drivers/misc/eeprom/eeprom.c
index 2fad790db3bf..60e3d91b5e03 100644
--- a/drivers/misc/eeprom/eeprom.c
+++ b/drivers/misc/eeprom/eeprom.c
@@ -114,7 +114,7 @@ static ssize_t eeprom_read(struct file *filp, struct kobject *kobj,
return count;
}
-static struct bin_attribute eeprom_attr = {
+static const struct bin_attribute eeprom_attr = {
.attr = {
.name = "eeprom",
.mode = S_IRUGO,
diff --git a/drivers/misc/eeprom/eeprom_93xx46.c b/drivers/misc/eeprom/eeprom_93xx46.c
index 94cc035aa841..38766968bfa2 100644
--- a/drivers/misc/eeprom/eeprom_93xx46.c
+++ b/drivers/misc/eeprom/eeprom_93xx46.c
@@ -377,8 +377,6 @@ static int eeprom_93xx46_probe_dt(struct spi_device *spi)
struct device_node *np = spi->dev.of_node;
struct eeprom_93xx46_platform_data *pd;
u32 tmp;
- int gpio;
- enum of_gpio_flags of_flags;
int ret;
pd = devm_kzalloc(&spi->dev, sizeof(*pd), GFP_KERNEL);
@@ -403,22 +401,14 @@ static int eeprom_93xx46_probe_dt(struct spi_device *spi)
if (of_property_read_bool(np, "read-only"))
pd->flags |= EE_READONLY;
- gpio = of_get_named_gpio_flags(np, "select-gpios", 0, &of_flags);
- if (gpio_is_valid(gpio)) {
- unsigned long flags =
- of_flags == OF_GPIO_ACTIVE_LOW ? GPIOF_ACTIVE_LOW : 0;
+ pd->select = devm_gpiod_get_optional(&spi->dev, "select",
+ GPIOD_OUT_LOW);
+ if (IS_ERR(pd->select))
+ return PTR_ERR(pd->select);
- ret = devm_gpio_request_one(&spi->dev, gpio, flags,
- "eeprom_93xx46_select");
- if (ret)
- return ret;
-
- pd->select = gpio_to_desc(gpio);
- pd->prepare = select_assert;
- pd->finish = select_deassert;
-
- gpiod_direction_output(pd->select, 0);
- }
+ pd->prepare = select_assert;
+ pd->finish = select_deassert;
+ gpiod_direction_output(pd->select, 0);
if (of_id->data) {
const struct eeprom_93xx46_devtype_data *data = of_id->data;
diff --git a/drivers/misc/eeprom/idt_89hpesx.c b/drivers/misc/eeprom/idt_89hpesx.c
index ab0df6a17690..34a5a41578d7 100644
--- a/drivers/misc/eeprom/idt_89hpesx.c
+++ b/drivers/misc/eeprom/idt_89hpesx.c
@@ -77,7 +77,7 @@
#include <linux/sysfs.h>
#include <linux/debugfs.h>
#include <linux/mod_devicetable.h>
-#include <linux/of.h>
+#include <linux/property.h>
#include <linux/i2c.h>
#include <linux/pci_ids.h>
#include <linux/delay.h>
@@ -1089,101 +1089,85 @@ static void idt_set_defval(struct idt_89hpesx_dev *pdev)
pdev->eeaddr = 0;
}
-#ifdef CONFIG_OF
static const struct i2c_device_id ee_ids[];
+
/*
* idt_ee_match_id() - check whether the node belongs to compatible EEPROMs
*/
-static const struct i2c_device_id *idt_ee_match_id(struct device_node *node)
+static const struct i2c_device_id *idt_ee_match_id(struct fwnode_handle *fwnode)
{
const struct i2c_device_id *id = ee_ids;
+ const char *compatible, *p;
char devname[I2C_NAME_SIZE];
+ int ret;
- /* Retrieve the device name without manufacturer name */
- if (of_modalias_node(node, devname, sizeof(devname)))
+ ret = fwnode_property_read_string(fwnode, "compatible", &compatible);
+ if (ret)
return NULL;
+ p = strchr(compatible, ',');
+ strlcpy(devname, p ? p + 1 : compatible, sizeof(devname));
/* Search through the device name */
- while (id->name[0]) {
- if (strcmp(devname, id->name) == 0)
- return id;
- id++;
- }
- return NULL;
+ while (id->name[0]) {
+ if (strcmp(devname, id->name) == 0)
+ return id;
+ id++;
+ }
+ return NULL;
}
/*
- * idt_get_ofdata() - get IDT i2c-device parameters from device tree
+ * idt_get_fw_data() - get IDT i2c-device parameters from device tree
* @pdev: Pointer to the driver data
*/
-static void idt_get_ofdata(struct idt_89hpesx_dev *pdev)
+static void idt_get_fw_data(struct idt_89hpesx_dev *pdev)
{
- const struct device_node *node = pdev->client->dev.of_node;
struct device *dev = &pdev->client->dev;
+ struct fwnode_handle *fwnode;
+ const struct i2c_device_id *ee_id = NULL;
+ u32 eeprom_addr;
+ int ret;
- /* Read dts node parameters */
- if (node) {
- const struct i2c_device_id *ee_id = NULL;
- struct device_node *child;
- const __be32 *addr_be;
- int len;
-
- /* Walk through all child nodes looking for compatible one */
- for_each_available_child_of_node(node, child) {
- ee_id = idt_ee_match_id(child);
- if (IS_ERR_OR_NULL(ee_id)) {
- dev_warn(dev, "Skip unsupported child node %s",
- child->full_name);
- continue;
- } else
- break;
- }
-
- /* If there is no child EEPROM device, then set zero size */
- if (!ee_id) {
- idt_set_defval(pdev);
- return;
- }
+ device_for_each_child_node(dev, fwnode) {
+ ee_id = idt_ee_match_id(fwnode);
+ if (IS_ERR_OR_NULL(ee_id)) {
+ dev_warn(dev, "Skip unsupported EEPROM device");
+ continue;
+ } else
+ break;
+ }
- /* Retrieve EEPROM size */
- pdev->eesize = (u32)ee_id->driver_data;
-
- /* Get custom EEPROM address from 'reg' attribute */
- addr_be = of_get_property(child, "reg", &len);
- if (!addr_be || (len < sizeof(*addr_be))) {
- dev_warn(dev, "No reg on %s, use default address %d",
- child->full_name, EEPROM_DEF_ADDR);
- pdev->inieecmd = 0;
- pdev->eeaddr = EEPROM_DEF_ADDR << 1;
- } else {
- pdev->inieecmd = EEPROM_USA;
- pdev->eeaddr = be32_to_cpup(addr_be) << 1;
- }
+ /* If there is no fwnode EEPROM device, then set zero size */
+ if (!ee_id) {
+ dev_warn(dev, "No fwnode, EEPROM access disabled");
+ idt_set_defval(pdev);
+ return;
+ }
- /* Check EEPROM 'read-only' flag */
- if (of_get_property(child, "read-only", NULL))
- pdev->eero = true;
- else /* if (!of_get_property(node, "read-only", NULL)) */
- pdev->eero = false;
+ /* Retrieve EEPROM size */
+ pdev->eesize = (u32)ee_id->driver_data;
- dev_dbg(dev, "EEPROM of %u bytes found by %hhu",
- pdev->eesize, pdev->eeaddr);
+ /* Get custom EEPROM address from 'reg' attribute */
+ ret = fwnode_property_read_u32(fwnode, "reg", &eeprom_addr);
+ if (ret || (eeprom_addr == 0)) {
+ dev_warn(dev, "No EEPROM reg found, use default address 0x%x",
+ EEPROM_DEF_ADDR);
+ pdev->inieecmd = 0;
+ pdev->eeaddr = EEPROM_DEF_ADDR << 1;
} else {
- dev_warn(dev, "No dts node, EEPROM access disabled");
- idt_set_defval(pdev);
+ pdev->inieecmd = EEPROM_USA;
+ pdev->eeaddr = eeprom_addr << 1;
}
-}
-#else
-static void idt_get_ofdata(struct idt_89hpesx_dev *pdev)
-{
- struct device *dev = &pdev->client->dev;
- dev_warn(dev, "OF table is unsupported, EEPROM access disabled");
+ /* Check EEPROM 'read-only' flag */
+ if (fwnode_property_read_bool(fwnode, "read-only"))
+ pdev->eero = true;
+ else /* if (!fwnode_property_read_bool(node, "read-only")) */
+ pdev->eero = false;
- /* Nothing we can do, just set the default values */
- idt_set_defval(pdev);
+ dev_info(dev, "EEPROM of %d bytes found by 0x%x",
+ pdev->eesize, pdev->eeaddr);
}
-#endif /* CONFIG_OF */
/*
* idt_create_pdev() - create and init data structure of the driver
@@ -1203,8 +1187,8 @@ static struct idt_89hpesx_dev *idt_create_pdev(struct i2c_client *client)
pdev->client = client;
i2c_set_clientdata(client, pdev);
- /* Read OF nodes information */
- idt_get_ofdata(pdev);
+ /* Read firmware nodes information */
+ idt_get_fw_data(pdev);
/* Initialize basic CSR CMD field - use full DWORD-sized r/w ops */
pdev->inicsrcmd = CSR_DWE;
diff --git a/drivers/misc/eeprom/max6875.c b/drivers/misc/eeprom/max6875.c
index e4dd93b2518c..0e32709d1022 100644
--- a/drivers/misc/eeprom/max6875.c
+++ b/drivers/misc/eeprom/max6875.c
@@ -124,7 +124,7 @@ static ssize_t max6875_read(struct file *filp, struct kobject *kobj,
return count;
}
-static struct bin_attribute user_eeprom_attr = {
+static const struct bin_attribute user_eeprom_attr = {
.attr = {
.name = "eeprom",
.mode = S_IRUGO,
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-11 19:20:03 +0300