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path: root/drivers/misc/eeprom/at25.c
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Diffstat (limited to 'drivers/misc/eeprom/at25.c')
-rw-r--r--drivers/misc/eeprom/at25.c34
1 files changed, 13 insertions, 21 deletions
diff --git a/drivers/misc/eeprom/at25.c b/drivers/misc/eeprom/at25.c
index 634f72929e12..0a1af93ec638 100644
--- a/drivers/misc/eeprom/at25.c
+++ b/drivers/misc/eeprom/at25.c
@@ -18,7 +18,7 @@
18 18
19#include <linux/spi/spi.h> 19#include <linux/spi/spi.h>
20#include <linux/spi/eeprom.h> 20#include <linux/spi/eeprom.h>
21#include <linux/of.h> 21#include <linux/property.h>
22 22
23/* 23/*
24 * NOTE: this is an *EEPROM* driver. The vagaries of product naming 24 * 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,
301 301
302/*-------------------------------------------------------------------------*/ 302/*-------------------------------------------------------------------------*/
303 303
304static int at25_np_to_chip(struct device *dev, 304static int at25_fw_to_chip(struct device *dev, struct spi_eeprom *chip)
305 struct device_node *np,
306 struct spi_eeprom *chip)
307{ 305{
308 u32 val; 306 u32 val;
309 307
310 memset(chip, 0, sizeof(*chip)); 308 memset(chip, 0, sizeof(*chip));
311 strncpy(chip->name, np->name, sizeof(chip->name)); 309 strncpy(chip->name, "at25", sizeof(chip->name));
312 310
313 if (of_property_read_u32(np, "size", &val) == 0 || 311 if (device_property_read_u32(dev, "size", &val) == 0 ||
314 of_property_read_u32(np, "at25,byte-len", &val) == 0) { 312 device_property_read_u32(dev, "at25,byte-len", &val) == 0) {
315 chip->byte_len = val; 313 chip->byte_len = val;
316 } else { 314 } else {
317 dev_err(dev, "Error: missing \"size\" property\n"); 315 dev_err(dev, "Error: missing \"size\" property\n");
318 return -ENODEV; 316 return -ENODEV;
319 } 317 }
320 318
321 if (of_property_read_u32(np, "pagesize", &val) == 0 || 319 if (device_property_read_u32(dev, "pagesize", &val) == 0 ||
322 of_property_read_u32(np, "at25,page-size", &val) == 0) { 320 device_property_read_u32(dev, "at25,page-size", &val) == 0) {
323 chip->page_size = (u16)val; 321 chip->page_size = (u16)val;
324 } else { 322 } else {
325 dev_err(dev, "Error: missing \"pagesize\" property\n"); 323 dev_err(dev, "Error: missing \"pagesize\" property\n");
326 return -ENODEV; 324 return -ENODEV;
327 } 325 }
328 326
329 if (of_property_read_u32(np, "at25,addr-mode", &val) == 0) { 327 if (device_property_read_u32(dev, "at25,addr-mode", &val) == 0) {
330 chip->flags = (u16)val; 328 chip->flags = (u16)val;
331 } else { 329 } else {
332 if (of_property_read_u32(np, "address-width", &val)) { 330 if (device_property_read_u32(dev, "address-width", &val)) {
333 dev_err(dev, 331 dev_err(dev,
334 "Error: missing \"address-width\" property\n"); 332 "Error: missing \"address-width\" property\n");
335 return -ENODEV; 333 return -ENODEV;
@@ -350,7 +348,7 @@ static int at25_np_to_chip(struct device *dev,
350 val); 348 val);
351 return -ENODEV; 349 return -ENODEV;
352 } 350 }
353 if (of_find_property(np, "read-only", NULL)) 351 if (device_property_present(dev, "read-only"))
354 chip->flags |= EE_READONLY; 352 chip->flags |= EE_READONLY;
355 } 353 }
356 return 0; 354 return 0;
@@ -360,21 +358,15 @@ static int at25_probe(struct spi_device *spi)
360{ 358{
361 struct at25_data *at25 = NULL; 359 struct at25_data *at25 = NULL;
362 struct spi_eeprom chip; 360 struct spi_eeprom chip;
363 struct device_node *np = spi->dev.of_node;
364 int err; 361 int err;
365 int sr; 362 int sr;
366 int addrlen; 363 int addrlen;
367 364
368 /* Chip description */ 365 /* Chip description */
369 if (!spi->dev.platform_data) { 366 if (!spi->dev.platform_data) {
370 if (np) { 367 err = at25_fw_to_chip(&spi->dev, &chip);
371 err = at25_np_to_chip(&spi->dev, np, &chip); 368 if (err)
372 if (err) 369 return err;
373 return err;
374 } else {
375 dev_err(&spi->dev, "Error: no chip description\n");
376 return -ENODEV;
377 }
378 } else 370 } else
379 chip = *(struct spi_eeprom *)spi->dev.platform_data; 371 chip = *(struct spi_eeprom *)spi->dev.platform_data;
380 372