diff options
author | Jerry Chuang <jerry-chuang@realtek.com> | 2009-11-03 07:17:11 -0200 |
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committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-12-11 12:23:22 -0800 |
commit | 8fc8598e61f6f384f3eaf1d9b09500c12af47b37 (patch) | |
tree | 28045c6c72a4e1046feb96e06114eb69b14dacd6 /drivers/staging/rtl8192u/r8180_93cx6.c | |
parent | 9b8437574759a4ce165ab20c631cd6e14c3148c2 (diff) |
Staging: Added Realtek rtl8192u driver to staging
Add Realtek linux driver for rtl8192u as provided by Realtek
rtl8192u_linux_2.6.0006.1031.2008.tar.gz, send to me C/C staging ML.
This version won't compile against upstream, doesn't follow
Linux CodingStyle and has their own ieee80211 stack.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/rtl8192u/r8180_93cx6.c')
-rw-r--r-- | drivers/staging/rtl8192u/r8180_93cx6.c | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/drivers/staging/rtl8192u/r8180_93cx6.c b/drivers/staging/rtl8192u/r8180_93cx6.c new file mode 100644 index 00000000000..8878cfeb0fb --- /dev/null +++ b/drivers/staging/rtl8192u/r8180_93cx6.c @@ -0,0 +1,146 @@ +/* + This files contains card eeprom (93c46 or 93c56) programming routines, + memory is addressed by 16 bits words. + + This is part of rtl8180 OpenSource driver. + Copyright (C) Andrea Merello 2004 <andreamrl@tiscali.it> + Released under the terms of GPL (General Public Licence) + + Parts of this driver are based on the GPL part of the + official realtek driver. + + Parts of this driver are based on the rtl8180 driver skeleton + from Patric Schenke & Andres Salomon. + + Parts of this driver are based on the Intel Pro Wireless 2100 GPL driver. + + We want to tanks the Authors of those projects and the Ndiswrapper + project Authors. +*/ + +#include "r8180_93cx6.h" + +void eprom_cs(struct net_device *dev, short bit) +{ + if(bit) + write_nic_byte_E(dev, EPROM_CMD, + (1<<EPROM_CS_SHIFT) | \ + read_nic_byte_E(dev, EPROM_CMD)); //enable EPROM + else + write_nic_byte_E(dev, EPROM_CMD, read_nic_byte_E(dev, EPROM_CMD)\ + &~(1<<EPROM_CS_SHIFT)); //disable EPROM + + force_pci_posting(dev); + udelay(EPROM_DELAY); +} + + +void eprom_ck_cycle(struct net_device *dev) +{ + write_nic_byte_E(dev, EPROM_CMD, + (1<<EPROM_CK_SHIFT) | read_nic_byte_E(dev,EPROM_CMD)); + force_pci_posting(dev); + udelay(EPROM_DELAY); + write_nic_byte_E(dev, EPROM_CMD, + read_nic_byte_E(dev, EPROM_CMD) &~ (1<<EPROM_CK_SHIFT)); + force_pci_posting(dev); + udelay(EPROM_DELAY); +} + + +void eprom_w(struct net_device *dev,short bit) +{ + if(bit) + write_nic_byte_E(dev, EPROM_CMD, (1<<EPROM_W_SHIFT) | \ + read_nic_byte_E(dev,EPROM_CMD)); + else + write_nic_byte_E(dev, EPROM_CMD, read_nic_byte_E(dev,EPROM_CMD)\ + &~(1<<EPROM_W_SHIFT)); + + force_pci_posting(dev); + udelay(EPROM_DELAY); +} + + +short eprom_r(struct net_device *dev) +{ + short bit; + + bit=(read_nic_byte_E(dev, EPROM_CMD) & (1<<EPROM_R_SHIFT) ); + udelay(EPROM_DELAY); + + if(bit) return 1; + return 0; +} + + +void eprom_send_bits_string(struct net_device *dev, short b[], int len) +{ + int i; + + for(i=0; i<len; i++){ + eprom_w(dev, b[i]); + eprom_ck_cycle(dev); + } +} + + +u32 eprom_read(struct net_device *dev, u32 addr) +{ + struct r8192_priv *priv = ieee80211_priv(dev); + short read_cmd[]={1,1,0}; + short addr_str[8]; + int i; + int addr_len; + u32 ret; + + ret=0; + //enable EPROM programming + write_nic_byte_E(dev, EPROM_CMD, + (EPROM_CMD_PROGRAM<<EPROM_CMD_OPERATING_MODE_SHIFT)); + force_pci_posting(dev); + udelay(EPROM_DELAY); + + if (priv->epromtype==EPROM_93c56){ + addr_str[7]=addr & 1; + addr_str[6]=addr & (1<<1); + addr_str[5]=addr & (1<<2); + addr_str[4]=addr & (1<<3); + addr_str[3]=addr & (1<<4); + addr_str[2]=addr & (1<<5); + addr_str[1]=addr & (1<<6); + addr_str[0]=addr & (1<<7); + addr_len=8; + }else{ + addr_str[5]=addr & 1; + addr_str[4]=addr & (1<<1); + addr_str[3]=addr & (1<<2); + addr_str[2]=addr & (1<<3); + addr_str[1]=addr & (1<<4); + addr_str[0]=addr & (1<<5); + addr_len=6; + } + eprom_cs(dev, 1); + eprom_ck_cycle(dev); + eprom_send_bits_string(dev, read_cmd, 3); + eprom_send_bits_string(dev, addr_str, addr_len); + + //keep chip pin D to low state while reading. + //I'm unsure if it is necessary, but anyway shouldn't hurt + eprom_w(dev, 0); + + for(i=0;i<16;i++){ + //eeprom needs a clk cycle between writing opcode&adr + //and reading data. (eeprom outs a dummy 0) + eprom_ck_cycle(dev); + ret |= (eprom_r(dev)<<(15-i)); + } + + eprom_cs(dev, 0); + eprom_ck_cycle(dev); + + //disable EPROM programming + write_nic_byte_E(dev, EPROM_CMD, + (EPROM_CMD_NORMAL<<EPROM_CMD_OPERATING_MODE_SHIFT)); + return ret; +} |