board: phytec: common: Define PHYTEC_API2_DATA_LEN

The EEPROM image length for API v2 is fixed to 32 bytes. No need
to use sizeof while this value won't change. This value is
also be required for API v3 to know where the API v3 header starts.

Signed-off-by: Daniel Schultz <d.schultz@phytec.de>
Tested-by: Wadim Egorov <w.egorov@phytec.de>

diff --git a/board/phytec/common/phytec_som_detection.c b/board/phytec/common/phytec_som_detection.c
index a089fe9bc9047dad356a17436df05b0a93806579..f0e35d8d2ecfee9d2592fa7e42c0ff7f713f20f7 100644 (file)
--- a/board/phytec/common/phytec_som_detection.c
+++ b/board/phytec/common/phytec_som_detection.c
@@ -78,13 +78,12 @@ int phytec_eeprom_data_init(struct phytec_eeprom_data *data,
        int ret, i;
        unsigned int crc;
        u8 *ptr;
-       const unsigned int payload_size = sizeof(struct phytec_eeprom_payload);
 
        if (!data)
                data = &eeprom_data;
 
        ret = phytec_eeprom_read((u8 *)data, bus_num, addr,
-                                payload_size, 0);
+                                PHYTEC_API2_DATA_LEN, 0);
        if (ret)
                goto err;
 
@@ -95,11 +94,11 @@ int phytec_eeprom_data_init(struct phytec_eeprom_data *data,
        }
 
        ptr = (u8 *)data;
-       for (i = 0; i < payload_size; ++i)
+       for (i = 0; i < PHYTEC_API2_DATA_LEN; ++i)
                if (ptr[i] != 0x0)
                        break;
 
-       if (i == payload_size) {
+       if (i == PHYTEC_API2_DATA_LEN) {
                pr_err("%s: EEPROM data is all zero. Erased?\n", __func__);
                ret = -EINVAL;
                goto err;
@@ -111,7 +110,7 @@ int phytec_eeprom_data_init(struct phytec_eeprom_data *data,
                return 0;
        }
 
-       crc = crc8(0, (const unsigned char *)&data->payload, payload_size);
+       crc = crc8(0, (const unsigned char *)&data->payload, PHYTEC_API2_DATA_LEN);
        debug("%s: crc: %x\n", __func__, crc);
 
        if (crc) {

diff --git a/board/phytec/common/phytec_som_detection.h b/board/phytec/common/phytec_som_detection.h
index 0ad5c14ef4e25cdd60aa0285efd01e0d85faf3ac..1ccf36c8e7a5ffc9da89524286b055e7481f4ea3 100644 (file)
--- a/board/phytec/common/phytec_som_detection.h
+++ b/board/phytec/common/phytec_som_detection.h
@@ -10,6 +10,8 @@
 #define PHYTEC_MAX_OPTIONS     17
 #define PHYTEC_EEPROM_INVAL    0xff
 
+#define PHYTEC_API2_DATA_LEN   32
+
 #define PHYTEC_GET_OPTION(option) \
        (((option) > '9') ? (option) - 'A' + 10 : (option) - '0')