From 9132088b00b6ba4d57536f2a3895ee71f28509d0 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Tue, 10 Nov 2015 20:53:23 +0100 Subject: [PATCH] eeprom: Pull out the I/O code Pull out the code which does the I2C or SPI read/write, so that the beefy ifdef around it is contained in a single function. Signed-off-by: Marek Vasut Cc: Simon Glass Cc: Tom Rini Cc: Heiko Schocher Reviewed-by: Heiko Schocher --- common/cmd_eeprom.c | 50 ++++++++++++++++++++++++++++----------------- 1 file changed, 31 insertions(+), 19 deletions(-) diff --git a/common/cmd_eeprom.c b/common/cmd_eeprom.c index 728606e5c4..7797d0ec9c 100644 --- a/common/cmd_eeprom.c +++ b/common/cmd_eeprom.c @@ -61,6 +61,34 @@ void eeprom_init(void) #endif } +static int eeprom_rw_block(unsigned offset, uchar *addr, unsigned alen, + uchar *buffer, unsigned len, bool read) +{ + int ret = 0; + + /* SPI */ +#if defined(CONFIG_SPI) && !defined(CONFIG_ENV_EEPROM_IS_ON_I2C) + if (read) + spi_read(addr, alen, buffer, len); + else + spi_write(addr, alen, buffer, len); +#else /* I2C */ + +#if defined(CONFIG_SYS_I2C_EEPROM_BUS) + i2c_set_bus_num(CONFIG_SYS_I2C_EEPROM_BUS); +#endif + + if (read) + ret = i2c_read(addr[0], offset, alen - 1, buffer, len); + else + ret = i2c_write(addr[0], offset, alen - 1, buffer, len); + + if (ret) + ret = 1; +#endif + return ret; +} + int eeprom_read (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt) { unsigned end = offset + cnt; @@ -114,15 +142,8 @@ int eeprom_read (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt len = maxlen; #endif -#if defined(CONFIG_SPI) && !defined(CONFIG_ENV_EEPROM_IS_ON_I2C) - spi_read (addr, alen, buffer, len); -#else -#if defined(CONFIG_SYS_I2C_EEPROM_BUS) - i2c_set_bus_num(CONFIG_SYS_I2C_EEPROM_BUS); -#endif - if (i2c_read(addr[0], offset, alen - 1, buffer, len)) - rcode = 1; -#endif + rcode = eeprom_rw_block(offset, addr, alen, buffer, len, 1); + buffer += len; offset += len; } @@ -197,17 +218,8 @@ int eeprom_write (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cn len = maxlen; #endif -#if defined(CONFIG_SPI) && !defined(CONFIG_ENV_EEPROM_IS_ON_I2C) - spi_write (addr, alen, buffer, len); -#else + rcode = eeprom_rw_block(offset, addr, alen, buffer, len, 0); -#if defined(CONFIG_SYS_I2C_EEPROM_BUS) - i2c_set_bus_num(CONFIG_SYS_I2C_EEPROM_BUS); -#endif - if (i2c_write(addr[0], offset, alen - 1, buffer, len)) - rcode = 1; - -#endif buffer += len; offset += len; -- 2.25.1