diff options
Diffstat (limited to 'drivers/staging/rtl8192u/r8180_93cx6.c')
| -rw-r--r-- | drivers/staging/rtl8192u/r8180_93cx6.c | 170 |
1 files changed, 0 insertions, 170 deletions
diff --git a/drivers/staging/rtl8192u/r8180_93cx6.c b/drivers/staging/rtl8192u/r8180_93cx6.c deleted file mode 100644 index 2527cea60e3e..000000000000 --- a/drivers/staging/rtl8192u/r8180_93cx6.c +++ /dev/null @@ -1,170 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * 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 <andrea.merello@gmail.com> - * - * 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 thank the Authors of those projects and the Ndiswrapper - * project Authors. - */ - -#include "r8180_93cx6.h" - -static void eprom_cs(struct net_device *dev, short bit) -{ - u8 cmdreg; - int err; - - err = read_nic_byte_E(dev, EPROM_CMD, &cmdreg); - if (err) - return; - if (bit) - /* enable EPROM */ - write_nic_byte_E(dev, EPROM_CMD, cmdreg | EPROM_CS_BIT); - else - /* disable EPROM */ - write_nic_byte_E(dev, EPROM_CMD, cmdreg & ~EPROM_CS_BIT); - - force_pci_posting(dev); - udelay(EPROM_DELAY); -} - -static void eprom_ck_cycle(struct net_device *dev) -{ - u8 cmdreg; - int err; - - err = read_nic_byte_E(dev, EPROM_CMD, &cmdreg); - if (err) - return; - write_nic_byte_E(dev, EPROM_CMD, cmdreg | EPROM_CK_BIT); - force_pci_posting(dev); - udelay(EPROM_DELAY); - - read_nic_byte_E(dev, EPROM_CMD, &cmdreg); - write_nic_byte_E(dev, EPROM_CMD, cmdreg & ~EPROM_CK_BIT); - force_pci_posting(dev); - udelay(EPROM_DELAY); -} - -static void eprom_w(struct net_device *dev, short bit) -{ - u8 cmdreg; - int err; - - err = read_nic_byte_E(dev, EPROM_CMD, &cmdreg); - if (err) - return; - if (bit) - write_nic_byte_E(dev, EPROM_CMD, cmdreg | EPROM_W_BIT); - else - write_nic_byte_E(dev, EPROM_CMD, cmdreg & ~EPROM_W_BIT); - - force_pci_posting(dev); - udelay(EPROM_DELAY); -} - -static short eprom_r(struct net_device *dev) -{ - u8 bit; - int err; - - err = read_nic_byte_E(dev, EPROM_CMD, &bit); - if (err) - return err; - - udelay(EPROM_DELAY); - - if (bit & EPROM_R_BIT) - return 1; - - return 0; -} - -static 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); - } -} - -int 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; - int err; - - 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 & BIT(1); - addr_str[5] = addr & BIT(2); - addr_str[4] = addr & BIT(3); - addr_str[3] = addr & BIT(4); - addr_str[2] = addr & BIT(5); - addr_str[1] = addr & BIT(6); - addr_str[0] = addr & BIT(7); - addr_len = 8; - } else { - addr_str[5] = addr & 1; - addr_str[4] = addr & BIT(1); - addr_str[3] = addr & BIT(2); - addr_str[2] = addr & BIT(3); - addr_str[1] = addr & BIT(4); - addr_str[0] = addr & BIT(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); - err = eprom_r(dev); - if (err < 0) - return err; - - ret |= err << (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; -} |