diff options
author | Kalle Valo <kalle.valo@nokia.com> | 2009-06-12 14:17:19 +0300 |
---|---|---|
committer | John W. Linville <linville@tuxdriver.com> | 2009-07-10 14:57:49 -0400 |
commit | ef2f8d45771490de5b8373c25e983ee1e3aee9ea (patch) | |
tree | 0ddf8a416ab891a371ddcaf914c059387d65fe07 /drivers/net/wireless/wl12xx/spi.c | |
parent | c731837855a9dcc2ec0c5367b0e16ad975aaed16 (diff) |
wl1251: add wl1251 prefix to all 1251 files
Now that all 1271 files are split, we can add wl1251_ prefix to the files.
Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Reviewed-by: Vidhya Govindan <vidhya.govindan@nokia.com>
Reviewed-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/wl12xx/spi.c')
-rw-r--r-- | drivers/net/wireless/wl12xx/spi.c | 395 |
1 files changed, 0 insertions, 395 deletions
diff --git a/drivers/net/wireless/wl12xx/spi.c b/drivers/net/wireless/wl12xx/spi.c deleted file mode 100644 index 9c9943f98674..000000000000 --- a/drivers/net/wireless/wl12xx/spi.c +++ /dev/null @@ -1,395 +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 - * | | - * - */ -int wl12xx_set_partition(struct wl12xx *wl, - u32 mem_start, u32 mem_size, - u32 reg_start, u32 reg_size) -{ - struct wl12xx_partition *partition; - struct spi_transfer t; - struct spi_message m; - size_t len, cmd_len; - u32 *cmd; - int addr; - - cmd_len = sizeof(u32) + 2 * sizeof(struct wl12xx_partition); - cmd = kzalloc(cmd_len, GFP_KERNEL); - if (!cmd) - return -ENOMEM; - - spi_message_init(&m); - memset(&t, 0, sizeof(t)); - - partition = (struct wl12xx_partition *) (cmd + 1); - 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 = cmd; - t.len = cmd_len; - spi_message_add_tail(&t, &m); - - spi_sync(wl->spi, &m); - - kfree(cmd); - - return 0; -} - -void wl12xx_spi_read(struct wl12xx *wl, int addr, void *buf, - size_t len, bool fixed) -{ - struct spi_transfer t[3]; - struct spi_message m; - u8 *busy_buf; - u32 *cmd; - - cmd = &wl->buffer_cmd; - busy_buf = wl->buffer_busyword; - - *cmd = 0; - *cmd |= WSPI_CMD_READ; - *cmd |= (len << WSPI_CMD_BYTE_LENGTH_OFFSET) & WSPI_CMD_BYTE_LENGTH; - *cmd |= addr & WSPI_CMD_BYTE_ADDR; - - if (fixed) - *cmd |= WSPI_CMD_FIXED; - - 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 = WL12XX_BUSY_WORD_LEN; - 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, bool fixed) -{ - struct spi_transfer t[2]; - struct spi_message m; - u32 *cmd; - - cmd = &wl->buffer_cmd; - - *cmd = 0; - *cmd |= WSPI_CMD_WRITE; - *cmd |= (len << WSPI_CMD_BYTE_LENGTH_OFFSET) & WSPI_CMD_BYTE_LENGTH; - *cmd |= addr & WSPI_CMD_BYTE_ADDR; - - if (fixed) - *cmd |= WSPI_CMD_FIXED; - - 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, false); -} - -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, false); -} - -void wl12xx_spi_reg_read(struct wl12xx *wl, int addr, void *buf, size_t len, - bool fixed) -{ - int physical; - - physical = wl12xx_translate_reg_addr(wl, addr); - - wl12xx_spi_read(wl, physical, buf, len, fixed); -} - -void wl12xx_spi_reg_write(struct wl12xx *wl, int addr, void *buf, size_t len, - bool fixed) -{ - int physical; - - physical = wl12xx_translate_reg_addr(wl, addr); - - wl12xx_spi_write(wl, physical, buf, len, fixed); -} - -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); -} |