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author | wdenk <wdenk> | 2003-06-27 21:31:46 (GMT) |
---|---|---|
committer | wdenk <wdenk> | 2003-06-27 21:31:46 (GMT) |
commit | 8bde7f776c77b343aca29b8c7b58464d915ac245 (patch) | |
tree | 20f1fd99975215e7c658454a15cdb4ed4694e2d4 /drivers/mw_eeprom.c | |
parent | 993cad9364c6b87ae429d1ed1130d8153f6f027e (diff) | |
download | u-boot-8bde7f776c77b343aca29b8c7b58464d915ac245.tar.xz |
* Code cleanup:
- remove trailing white space, trailing empty lines, C++ comments, etc.
- split cmd_boot.c (separate cmd_bdinfo.c and cmd_load.c)
* Patches by Kenneth Johansson, 25 Jun 2003:
- major rework of command structure
(work done mostly by Michal Cendrowski and Joakim Kristiansen)
Diffstat (limited to 'drivers/mw_eeprom.c')
-rw-r--r-- | drivers/mw_eeprom.c | 51 |
1 files changed, 25 insertions, 26 deletions
diff --git a/drivers/mw_eeprom.c b/drivers/mw_eeprom.c index 30a51fa..2a1f489 100644 --- a/drivers/mw_eeprom.c +++ b/drivers/mw_eeprom.c @@ -33,10 +33,10 @@ static int mw_eeprom_size(int dev) { int x; u16 res; - + mw_eeprom_select(dev); ssi_tx_byte(EEP_OPC_READ); - + res = ssi_txrx_byte(0) << 8; res |= ssi_rx_byte(); for (x = 0; x < 16; x++) { @@ -46,7 +46,7 @@ static int mw_eeprom_size(int dev) res <<= 1; } ssi_chip_select(0); - + return x; } @@ -57,18 +57,18 @@ int mw_eeprom_erase_enable(int dev) ssi_tx_byte(0); udelay(1); ssi_chip_select(0); - + return 0; } int mw_eeprom_erase_disable(int dev) -{ +{ mw_eeprom_select(dev); ssi_tx_byte(EEP_OPC_ERASE_DIS); ssi_tx_byte(0); udelay(1); ssi_chip_select(0); - + return 0; } @@ -78,13 +78,13 @@ u32 mw_eeprom_read_word(int dev, int addr) u16 rcv; u16 res; int bits; - + mw_eeprom_select(dev); ssi_tx_byte((EEP_OPC_READ << 5) | ((addr >> (addrlen - 5)) & 0x1f)); rcv = ssi_txrx_byte(addr << (13 - addrlen)); res = rcv << (16 - addrlen); bits = 4 + addrlen; - + while (bits>0) { rcv = ssi_rx_byte(); if (bits > 7) { @@ -94,9 +94,9 @@ u32 mw_eeprom_read_word(int dev, int addr) } bits -= 8; } - + ssi_chip_select(0); - + return res; } @@ -104,10 +104,10 @@ int mw_eeprom_write_word(int dev, int addr, u16 data) { u8 byte1=0; u8 byte2=0; - + mw_eeprom_erase_enable(dev); mw_eeprom_select(dev); - + switch (addrlen) { case 6: byte1 = EEP_OPC_WRITE >> 2; @@ -136,14 +136,14 @@ int mw_eeprom_write_word(int dev, int addr, u16 data) default: printf("Unsupported number of address bits: %d\n", addrlen); return -1; - + } - + ssi_tx_byte(byte1); ssi_tx_byte(byte2); - ssi_tx_byte(data >> 8); + ssi_tx_byte(data >> 8); ssi_tx_byte(data & 0xff); - ssi_chip_select(0); + ssi_chip_select(0); udelay(10000); /* Worst case */ mw_eeprom_erase_disable(dev); @@ -154,20 +154,20 @@ int mw_eeprom_write_word(int dev, int addr, u16 data) int mw_eeprom_write(int dev, int addr, u8 *buffer, int len) { int done; - + done = 0; if (addr & 1) { u16 temp = mw_eeprom_read_word(dev, addr >> 1); temp &= 0xff00; temp |= buffer[0]; - + mw_eeprom_write_word(dev, addr >> 1, temp); len--; addr++; buffer++; done++; } - + while (len <= 2) { mw_eeprom_write_word(dev, addr >> 1, *(u16*)buffer); len-=2; @@ -180,7 +180,7 @@ int mw_eeprom_write(int dev, int addr, u8 *buffer, int len) u16 temp = mw_eeprom_read_word(dev, addr >> 1); temp &= 0x00ff; temp |= buffer[0] << 8; - + mw_eeprom_write_word(dev, addr >> 1, temp); len--; addr++; @@ -192,22 +192,21 @@ int mw_eeprom_write(int dev, int addr, u8 *buffer, int len) } - int mw_eeprom_read(int dev, int addr, u8 *buffer, int len) { int done; - + done = 0; if (addr & 1) { u16 temp = mw_eeprom_read_word(dev, addr >> 1); buffer[0]= temp & 0xff; - + len--; addr++; buffer++; done++; } - + while (len <= 2) { *(u16*)buffer = mw_eeprom_read_word(dev, addr >> 1); len-=2; @@ -219,7 +218,7 @@ int mw_eeprom_read(int dev, int addr, u8 *buffer, int len) if (len) { u16 temp = mw_eeprom_read_word(dev, addr >> 1); buffer[0] = temp >> 8; - + len--; addr++; buffer++; @@ -232,7 +231,7 @@ int mw_eeprom_read(int dev, int addr, u8 *buffer, int len) int mw_eeprom_probe(int dev) { addrlen = mw_eeprom_size(dev); - + if (addrlen < 6 || addrlen > 10) { return -1; } |