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path: root/drivers/net/wireless/wl12xx/wl1271_spi.c
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Diffstat (limited to 'drivers/net/wireless/wl12xx/wl1271_spi.c')
-rw-r--r--drivers/net/wireless/wl12xx/wl1271_spi.c258
1 files changed, 0 insertions, 258 deletions
diff --git a/drivers/net/wireless/wl12xx/wl1271_spi.c b/drivers/net/wireless/wl12xx/wl1271_spi.c
deleted file mode 100644
index 053c84aceb4..00000000000
--- a/drivers/net/wireless/wl12xx/wl1271_spi.c
+++ /dev/null
@@ -1,258 +0,0 @@
-/*
- * This file is part of wl1271
- *
- * Copyright (C) 2008-2009 Nokia Corporation
- *
- * Contact: Luciano Coelho <luciano.coelho@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/platform_device.h>
-#include <linux/crc7.h>
-#include <linux/spi/spi.h>
-#include <linux/slab.h>
-
-#include "wl1271.h"
-#include "wl12xx_80211.h"
-#include "wl1271_spi.h"
-
-
-void wl1271_spi_reset(struct wl1271 *wl)
-{
- u8 *cmd;
- struct spi_transfer t;
- struct spi_message m;
-
- cmd = kzalloc(WSPI_INIT_CMD_LEN, GFP_KERNEL);
- if (!cmd) {
- wl1271_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);
-
- wl1271_dump(DEBUG_SPI, "spi reset -> ", cmd, WSPI_INIT_CMD_LEN);
-}
-
-void wl1271_spi_init(struct wl1271 *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) {
- wl1271_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);
-
- wl1271_dump(DEBUG_SPI, "spi init -> ", cmd, WSPI_INIT_CMD_LEN);
-}
-
-#define WL1271_BUSY_WORD_TIMEOUT 1000
-
-/* FIXME: Check busy words, removed due to SPI bug */
-#if 0
-static void wl1271_spi_read_busy(struct wl1271 *wl, void *buf, size_t len)
-{
- struct spi_transfer t[1];
- struct spi_message m;
- u32 *busy_buf;
- int num_busy_bytes = 0;
-
- wl1271_info("spi read BUSY!");
-
- /*
- * Look for the non-busy word in the read buffer, and if found,
- * read in the remaining data into the buffer.
- */
- busy_buf = (u32 *)buf;
- for (; (u32)busy_buf < (u32)buf + len; busy_buf++) {
- num_busy_bytes += sizeof(u32);
- if (*busy_buf & 0x1) {
- spi_message_init(&m);
- memset(t, 0, sizeof(t));
- memmove(buf, busy_buf, len - num_busy_bytes);
- t[0].rx_buf = buf + (len - num_busy_bytes);
- t[0].len = num_busy_bytes;
- spi_message_add_tail(&t[0], &m);
- spi_sync(wl->spi, &m);
- return;
- }
- }
-
- /*
- * Read further busy words from SPI until a non-busy word is
- * encountered, then read the data itself into the buffer.
- */
- wl1271_info("spi read BUSY-polling needed!");
-
- num_busy_bytes = WL1271_BUSY_WORD_TIMEOUT;
- busy_buf = wl->buffer_busyword;
- while (num_busy_bytes) {
- num_busy_bytes--;
- spi_message_init(&m);
- memset(t, 0, sizeof(t));
- t[0].rx_buf = busy_buf;
- t[0].len = sizeof(u32);
- spi_message_add_tail(&t[0], &m);
- spi_sync(wl->spi, &m);
-
- if (*busy_buf & 0x1) {
- spi_message_init(&m);
- memset(t, 0, sizeof(t));
- t[0].rx_buf = buf;
- t[0].len = len;
- spi_message_add_tail(&t[0], &m);
- spi_sync(wl->spi, &m);
- return;
- }
- }
-
- /* The SPI bus is unresponsive, the read failed. */
- memset(buf, 0, len);
- wl1271_error("SPI read busy-word timeout!\n");
-}
-#endif
-
-void wl1271_spi_raw_read(struct wl1271 *wl, int addr, void *buf,
- size_t len, bool fixed)
-{
- struct spi_transfer t[3];
- struct spi_message m;
- u32 *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 = WL1271_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, removed due to SPI bug */
- /* if (!(busy_buf[WL1271_BUSY_WORD_CNT - 1] & 0x1))
- wl1271_spi_read_busy(wl, buf, len); */
-
- wl1271_dump(DEBUG_SPI, "spi_read cmd -> ", cmd, sizeof(*cmd));
- wl1271_dump(DEBUG_SPI, "spi_read buf <- ", buf, len);
-}
-
-void wl1271_spi_raw_write(struct wl1271 *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);
-
- wl1271_dump(DEBUG_SPI, "spi_write cmd -> ", cmd, sizeof(*cmd));
- wl1271_dump(DEBUG_SPI, "spi_write buf -> ", buf, len);
-}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-20 04:46:19 +0000