From: Mika Westerberg mika.westerberg@linux.intel.com
Make use of device property API in this driver so that both DT and ACPI based systems can use this driver.
Signed-off-by: Mika Westerberg mika.westerberg@linux.intel.com Signed-off-by: Rafael J. Wysocki rafael.j.wysocki@intel.com --- drivers/misc/eeprom/at25.c | 34 +++++++++++++--------------------- 1 file changed, 13 insertions(+), 21 deletions(-)
diff --git a/drivers/misc/eeprom/at25.c b/drivers/misc/eeprom/at25.c index 634f729..0a1af93 100644 --- a/drivers/misc/eeprom/at25.c +++ b/drivers/misc/eeprom/at25.c @@ -18,7 +18,7 @@
#include <linux/spi/spi.h> #include <linux/spi/eeprom.h> -#include <linux/of.h> +#include <linux/property.h>
/* * NOTE: this is an *EEPROM* driver. The vagaries of product naming @@ -301,35 +301,33 @@ static ssize_t at25_mem_write(struct memory_accessor *mem, const char *buf,
/*-------------------------------------------------------------------------*/
-static int at25_np_to_chip(struct device *dev, - struct device_node *np, - struct spi_eeprom *chip) +static int at25_fw_to_chip(struct device *dev, struct spi_eeprom *chip) { u32 val;
memset(chip, 0, sizeof(*chip)); - strncpy(chip->name, np->name, sizeof(chip->name)); + strncpy(chip->name, "at25", sizeof(chip->name));
- if (of_property_read_u32(np, "size", &val) == 0 || - of_property_read_u32(np, "at25,byte-len", &val) == 0) { + if (device_property_read_u32(dev, "size", &val) == 0 || + device_property_read_u32(dev, "at25,byte-len", &val) == 0) { chip->byte_len = val; } else { dev_err(dev, "Error: missing "size" property\n"); return -ENODEV; }
- if (of_property_read_u32(np, "pagesize", &val) == 0 || - of_property_read_u32(np, "at25,page-size", &val) == 0) { + if (device_property_read_u32(dev, "pagesize", &val) == 0 || + device_property_read_u32(dev, "at25,page-size", &val) == 0) { chip->page_size = (u16)val; } else { dev_err(dev, "Error: missing "pagesize" property\n"); return -ENODEV; }
- if (of_property_read_u32(np, "at25,addr-mode", &val) == 0) { + if (device_property_read_u32(dev, "at25,addr-mode", &val) == 0) { chip->flags = (u16)val; } else { - if (of_property_read_u32(np, "address-width", &val)) { + if (device_property_read_u32(dev, "address-width", &val)) { dev_err(dev, "Error: missing "address-width" property\n"); return -ENODEV; @@ -350,7 +348,7 @@ static int at25_np_to_chip(struct device *dev, val); return -ENODEV; } - if (of_find_property(np, "read-only", NULL)) + if (device_property_present(dev, "read-only")) chip->flags |= EE_READONLY; } return 0; @@ -360,21 +358,15 @@ static int at25_probe(struct spi_device *spi) { struct at25_data *at25 = NULL; struct spi_eeprom chip; - struct device_node *np = spi->dev.of_node; int err; int sr; int addrlen;
/* Chip description */ if (!spi->dev.platform_data) { - if (np) { - err = at25_np_to_chip(&spi->dev, np, &chip); - if (err) - return err; - } else { - dev_err(&spi->dev, "Error: no chip description\n"); - return -ENODEV; - } + err = at25_fw_to_chip(&spi->dev, &chip); + if (err) + return err; } else chip = *(struct spi_eeprom *)spi->dev.platform_data;