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wl12xx: allocate buffer spi read/write command buffer kzalloc()

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Needed for DMA safe transfers.

Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Kalle Valo 2009-06-12 14:14:47 +03:00 committed by John W. Linville
parent 8d47cdb617
commit 56343a3cfd
2 changed files with 20 additions and 15 deletions
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34
drivers/net/wireless/wl12xx/spi.c
View File

@ -263,17 +263,19 @@ void wl12xx_spi_read(struct wl12xx *wl, int addr, void *buf,
struct spi_transfer t[3];
struct spi_message m;
char busy_buf[TNETWIF_READ_OFFSET_BYTES];
u32 cmd;
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;
cmd = &wl->buffer_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].tx_buf = cmd;
t[0].len = 4;
spi_message_add_tail(&t[0], &m);
@ -290,7 +292,7 @@ void wl12xx_spi_read(struct wl12xx *wl, int addr, void *buf,
/* FIXME: check busy words */
wl12xx_dump(DEBUG_SPI, "spi_read cmd -> ", &cmd, sizeof(cmd));
wl12xx_dump(DEBUG_SPI, "spi_read cmd -> ", cmd, sizeof(*cmd));
wl12xx_dump(DEBUG_SPI, "spi_read buf <- ", buf, len);
}
@ -299,18 +301,20 @@ void wl12xx_spi_write(struct wl12xx *wl, int addr, void *buf,
{
struct spi_transfer t[2];
struct spi_message m;
u32 cmd;
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;
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;
spi_message_init(&m);
memset(t, 0, sizeof(t));
t[0].tx_buf = &cmd;
t[0].len = sizeof(cmd);
t[0].tx_buf = cmd;
t[0].len = sizeof(*cmd);
spi_message_add_tail(&t[0], &m);
t[1].tx_buf = buf;
@ -319,7 +323,7 @@ void wl12xx_spi_write(struct wl12xx *wl, int addr, void *buf,
spi_sync(wl->spi, &m);
wl12xx_dump(DEBUG_SPI, "spi_write cmd -> ", &cmd, sizeof(cmd));
wl12xx_dump(DEBUG_SPI, "spi_write cmd -> ", cmd, sizeof(*cmd));
wl12xx_dump(DEBUG_SPI, "spi_write buf -> ", buf, len);
}

1
drivers/net/wireless/wl12xx/wl12xx.h
View File

@ -384,6 +384,7 @@ struct wl12xx {
struct wl12xx_debugfs debugfs;
u32 buffer_32;
u32 buffer_cmd;
};
int wl12xx_plt_start(struct wl12xx *wl);