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path: root/drivers/net/wireless/wl12xx/spi.c
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Diffstat (limited to 'drivers/net/wireless/wl12xx/spi.c')
-rw-r--r--drivers/net/wireless/wl12xx/spi.c358
1 files changed, 0 insertions, 358 deletions
diff --git a/drivers/net/wireless/wl12xx/spi.c b/drivers/net/wireless/wl12xx/spi.c
deleted file mode 100644
index abdf171a47e..00000000000
--- a/drivers/net/wireless/wl12xx/spi.c
+++ /dev/null
@@ -1,358 +0,0 @@
-/*
- * This file is part of wl12xx
- *
- * Copyright (C) 2008 Nokia Corporation
- *
- * Contact: Kalle Valo <kalle.valo@nokia.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301 USA
- *
- */
-
-#include <linux/module.h>
-#include <linux/crc7.h>
-#include <linux/spi/spi.h>
-
-#include "wl12xx.h"
-#include "wl12xx_80211.h"
-#include "reg.h"
-#include "spi.h"
-#include "ps.h"
-
-static int wl12xx_translate_reg_addr(struct wl12xx *wl, int addr)
-{
- /* If the address is lower than REGISTERS_BASE, it means that this is
- * a chip-specific register address, so look it up in the registers
- * table */
- if (addr < REGISTERS_BASE) {
- /* Make sure we don't go over the table */
- if (addr >= ACX_REG_TABLE_LEN) {
- wl12xx_error("address out of range (%d)", addr);
- return -EINVAL;
- }
- addr = wl->chip.acx_reg_table[addr];
- }
-
- return addr - wl->physical_reg_addr + wl->virtual_reg_addr;
-}
-
-static int wl12xx_translate_mem_addr(struct wl12xx *wl, int addr)
-{
- return addr - wl->physical_mem_addr + wl->virtual_mem_addr;
-}
-
-
-void wl12xx_spi_reset(struct wl12xx *wl)
-{
- u8 *cmd;
- struct spi_transfer t;
- struct spi_message m;
-
- cmd = kzalloc(WSPI_INIT_CMD_LEN, GFP_KERNEL);
- if (!cmd) {
- wl12xx_error("could not allocate cmd for spi reset");
- return;
- }
-
- memset(&t, 0, sizeof(t));
- spi_message_init(&m);
-
- memset(cmd, 0xff, WSPI_INIT_CMD_LEN);
-
- t.tx_buf = cmd;
- t.len = WSPI_INIT_CMD_LEN;
- spi_message_add_tail(&t, &m);
-
- spi_sync(wl->spi, &m);
-
- wl12xx_dump(DEBUG_SPI, "spi reset -> ", cmd, WSPI_INIT_CMD_LEN);
-}
-
-void wl12xx_spi_init(struct wl12xx *wl)
-{
- u8 crc[WSPI_INIT_CMD_CRC_LEN], *cmd;
- struct spi_transfer t;
- struct spi_message m;
-
- cmd = kzalloc(WSPI_INIT_CMD_LEN, GFP_KERNEL);
- if (!cmd) {
- wl12xx_error("could not allocate cmd for spi init");
- return;
- }
-
- memset(crc, 0, sizeof(crc));
- memset(&t, 0, sizeof(t));
- spi_message_init(&m);
-
- /*
- * Set WSPI_INIT_COMMAND
- * the data is being send from the MSB to LSB
- */
- cmd[2] = 0xff;
- cmd[3] = 0xff;
- cmd[1] = WSPI_INIT_CMD_START | WSPI_INIT_CMD_TX;
- cmd[0] = 0;
- cmd[7] = 0;
- cmd[6] |= HW_ACCESS_WSPI_INIT_CMD_MASK << 3;
- cmd[6] |= HW_ACCESS_WSPI_FIXED_BUSY_LEN & WSPI_INIT_CMD_FIXEDBUSY_LEN;
-
- if (HW_ACCESS_WSPI_FIXED_BUSY_LEN == 0)
- cmd[5] |= WSPI_INIT_CMD_DIS_FIXEDBUSY;
- else
- cmd[5] |= WSPI_INIT_CMD_EN_FIXEDBUSY;
-
- cmd[5] |= WSPI_INIT_CMD_IOD | WSPI_INIT_CMD_IP | WSPI_INIT_CMD_CS
- | WSPI_INIT_CMD_WSPI | WSPI_INIT_CMD_WS;
-
- crc[0] = cmd[1];
- crc[1] = cmd[0];
- crc[2] = cmd[7];
- crc[3] = cmd[6];
- crc[4] = cmd[5];
-
- cmd[4] |= crc7(0, crc, WSPI_INIT_CMD_CRC_LEN) << 1;
- cmd[4] |= WSPI_INIT_CMD_END;
-
- t.tx_buf = cmd;
- t.len = WSPI_INIT_CMD_LEN;
- spi_message_add_tail(&t, &m);
-
- spi_sync(wl->spi, &m);
-
- wl12xx_dump(DEBUG_SPI, "spi init -> ", cmd, WSPI_INIT_CMD_LEN);
-}
-
-/* Set the SPI partitions to access the chip addresses
- *
- * There are two VIRTUAL (SPI) partitions (the memory partition and the
- * registers partition), which are mapped to two different areas of the
- * PHYSICAL (hardware) memory. This function also makes other checks to
- * ensure that the partitions are not overlapping. In the diagram below, the
- * memory partition comes before the register partition, but the opposite is
- * also supported.
- *
- * PHYSICAL address
- * space
- *
- * | |
- * ...+----+--> mem_start
- * VIRTUAL address ... | |
- * space ... | | [PART_0]
- * ... | |
- * 0x00000000 <--+----+... ...+----+--> mem_start + mem_size
- * | | ... | |
- * |MEM | ... | |
- * | | ... | |
- * part_size <--+----+... | | {unused area)
- * | | ... | |
- * |REG | ... | |
- * part_size | | ... | |
- * + <--+----+... ...+----+--> reg_start
- * reg_size ... | |
- * ... | | [PART_1]
- * ... | |
- * ...+----+--> reg_start + reg_size
- * | |
- *
- */
-void wl12xx_set_partition(struct wl12xx *wl,
- u32 mem_start, u32 mem_size,
- u32 reg_start, u32 reg_size)
-{
- u8 tx_buf[sizeof(u32) + 2 * sizeof(struct wl12xx_partition)];
- struct wl12xx_partition *partition;
- struct spi_transfer t;
- struct spi_message m;
- u32 *cmd;
- size_t len;
- int addr;
-
- spi_message_init(&m);
- memset(&t, 0, sizeof(t));
- memset(tx_buf, 0, sizeof(tx_buf));
-
- cmd = (u32 *) tx_buf;
- partition = (struct wl12xx_partition *) (tx_buf + sizeof(u32));
- addr = HW_ACCESS_PART0_SIZE_ADDR;
- len = 2 * sizeof(struct wl12xx_partition);
-
- *cmd |= WSPI_CMD_WRITE;
- *cmd |= (len << WSPI_CMD_BYTE_LENGTH_OFFSET) & WSPI_CMD_BYTE_LENGTH;
- *cmd |= addr & WSPI_CMD_BYTE_ADDR;
-
- wl12xx_debug(DEBUG_SPI, "mem_start %08X mem_size %08X",
- mem_start, mem_size);
- wl12xx_debug(DEBUG_SPI, "reg_start %08X reg_size %08X",
- reg_start, reg_size);
-
- /* Make sure that the two partitions together don't exceed the
- * address range */
- if ((mem_size + reg_size) > HW_ACCESS_MEMORY_MAX_RANGE) {
- wl12xx_debug(DEBUG_SPI, "Total size exceeds maximum virtual"
- " address range. Truncating partition[0].");
- mem_size = HW_ACCESS_MEMORY_MAX_RANGE - reg_size;
- wl12xx_debug(DEBUG_SPI, "mem_start %08X mem_size %08X",
- mem_start, mem_size);
- wl12xx_debug(DEBUG_SPI, "reg_start %08X reg_size %08X",
- reg_start, reg_size);
- }
-
- if ((mem_start < reg_start) &&
- ((mem_start + mem_size) > reg_start)) {
- /* Guarantee that the memory partition doesn't overlap the
- * registers partition */
- wl12xx_debug(DEBUG_SPI, "End of partition[0] is "
- "overlapping partition[1]. Adjusted.");
- mem_size = reg_start - mem_start;
- wl12xx_debug(DEBUG_SPI, "mem_start %08X mem_size %08X",
- mem_start, mem_size);
- wl12xx_debug(DEBUG_SPI, "reg_start %08X reg_size %08X",
- reg_start, reg_size);
- } else if ((reg_start < mem_start) &&
- ((reg_start + reg_size) > mem_start)) {
- /* Guarantee that the register partition doesn't overlap the
- * memory partition */
- wl12xx_debug(DEBUG_SPI, "End of partition[1] is"
- " overlapping partition[0]. Adjusted.");
- reg_size = mem_start - reg_start;
- wl12xx_debug(DEBUG_SPI, "mem_start %08X mem_size %08X",
- mem_start, mem_size);
- wl12xx_debug(DEBUG_SPI, "reg_start %08X reg_size %08X",
- reg_start, reg_size);
- }
-
- partition[0].start = mem_start;
- partition[0].size = mem_size;
- partition[1].start = reg_start;
- partition[1].size = reg_size;
-
- wl->physical_mem_addr = mem_start;
- wl->physical_reg_addr = reg_start;
-
- wl->virtual_mem_addr = 0;
- wl->virtual_reg_addr = mem_size;
-
- t.tx_buf = tx_buf;
- t.len = sizeof(tx_buf);
- spi_message_add_tail(&t, &m);
-
- spi_sync(wl->spi, &m);
-}
-
-void wl12xx_spi_read(struct wl12xx *wl, int addr, void *buf,
- size_t len)
-{
- struct spi_transfer t[3];
- struct spi_message m;
- char busy_buf[TNETWIF_READ_OFFSET_BYTES];
- u32 cmd;
-
- cmd = 0;
- cmd |= WSPI_CMD_READ;
- cmd |= (len << WSPI_CMD_BYTE_LENGTH_OFFSET) & WSPI_CMD_BYTE_LENGTH;
- cmd |= addr & WSPI_CMD_BYTE_ADDR;
-
- spi_message_init(&m);
- memset(t, 0, sizeof(t));
-
- t[0].tx_buf = &cmd;
- t[0].len = 4;
- spi_message_add_tail(&t[0], &m);
-
- /* Busy and non busy words read */
- t[1].rx_buf = busy_buf;
- t[1].len = TNETWIF_READ_OFFSET_BYTES;
- spi_message_add_tail(&t[1], &m);
-
- t[2].rx_buf = buf;
- t[2].len = len;
- spi_message_add_tail(&t[2], &m);
-
- spi_sync(wl->spi, &m);
-
- /* FIXME: check busy words */
-
- wl12xx_dump(DEBUG_SPI, "spi_read cmd -> ", &cmd, sizeof(cmd));
- wl12xx_dump(DEBUG_SPI, "spi_read buf <- ", buf, len);
-}
-
-void wl12xx_spi_write(struct wl12xx *wl, int addr, void *buf,
- size_t len)
-{
- struct spi_transfer t[2];
- struct spi_message m;
- u32 cmd;
-
- cmd = 0;
- cmd |= WSPI_CMD_WRITE;
- cmd |= (len << WSPI_CMD_BYTE_LENGTH_OFFSET) & WSPI_CMD_BYTE_LENGTH;
- cmd |= addr & WSPI_CMD_BYTE_ADDR;
-
- spi_message_init(&m);
- memset(t, 0, sizeof(t));
-
- t[0].tx_buf = &cmd;
- t[0].len = sizeof(cmd);
- spi_message_add_tail(&t[0], &m);
-
- t[1].tx_buf = buf;
- t[1].len = len;
- spi_message_add_tail(&t[1], &m);
-
- spi_sync(wl->spi, &m);
-
- wl12xx_dump(DEBUG_SPI, "spi_write cmd -> ", &cmd, sizeof(cmd));
- wl12xx_dump(DEBUG_SPI, "spi_write buf -> ", buf, len);
-}
-
-void wl12xx_spi_mem_read(struct wl12xx *wl, int addr, void *buf,
- size_t len)
-{
- int physical;
-
- physical = wl12xx_translate_mem_addr(wl, addr);
-
- wl12xx_spi_read(wl, physical, buf, len);
-}
-
-void wl12xx_spi_mem_write(struct wl12xx *wl, int addr, void *buf,
- size_t len)
-{
- int physical;
-
- physical = wl12xx_translate_mem_addr(wl, addr);
-
- wl12xx_spi_write(wl, physical, buf, len);
-}
-
-u32 wl12xx_mem_read32(struct wl12xx *wl, int addr)
-{
- return wl12xx_read32(wl, wl12xx_translate_mem_addr(wl, addr));
-}
-
-void wl12xx_mem_write32(struct wl12xx *wl, int addr, u32 val)
-{
- wl12xx_write32(wl, wl12xx_translate_mem_addr(wl, addr), val);
-}
-
-u32 wl12xx_reg_read32(struct wl12xx *wl, int addr)
-{
- return wl12xx_read32(wl, wl12xx_translate_reg_addr(wl, addr));
-}
-
-void wl12xx_reg_write32(struct wl12xx *wl, int addr, u32 val)
-{
- wl12xx_write32(wl, wl12xx_translate_reg_addr(wl, addr), val);
-}
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-04 23:55:10 +0000