2009-04-30 04:33:31 +08:00
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/*
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2009-06-12 19:17:39 +08:00
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* This file is part of wl1251
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2009-04-30 04:33:31 +08:00
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*
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* Copyright (C) 2008 Nokia Corporation
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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*/
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2009-08-07 18:33:26 +08:00
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#include <linux/irq.h>
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2009-04-30 04:33:31 +08:00
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#include <linux/module.h>
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include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 16:04:11 +08:00
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#include <linux/slab.h>
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2009-04-30 04:33:31 +08:00
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#include <linux/crc7.h>
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#include <linux/spi/spi.h>
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2010-09-16 19:16:02 +08:00
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#include <linux/wl12xx.h>
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2009-04-30 04:33:31 +08:00
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2009-06-12 19:17:25 +08:00
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#include "wl1251.h"
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2010-10-10 16:28:32 +08:00
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#include "reg.h"
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#include "spi.h"
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2009-04-30 04:33:31 +08:00
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2009-08-07 18:33:49 +08:00
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static irqreturn_t wl1251_irq(int irq, void *cookie)
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{
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struct wl1251 *wl;
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wl1251_debug(DEBUG_IRQ, "IRQ");
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wl = cookie;
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2009-08-07 18:35:04 +08:00
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ieee80211_queue_work(wl->hw, &wl->irq_work);
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2009-08-07 18:33:49 +08:00
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return IRQ_HANDLED;
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}
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2009-08-07 18:33:34 +08:00
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static struct spi_device *wl_to_spi(struct wl1251 *wl)
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{
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return wl->if_priv;
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}
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2009-08-07 18:33:11 +08:00
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static void wl1251_spi_reset(struct wl1251 *wl)
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2009-04-30 04:33:31 +08:00
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{
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u8 *cmd;
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struct spi_transfer t;
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struct spi_message m;
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cmd = kzalloc(WSPI_INIT_CMD_LEN, GFP_KERNEL);
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if (!cmd) {
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2009-06-12 19:17:39 +08:00
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wl1251_error("could not allocate cmd for spi reset");
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2009-04-30 04:33:31 +08:00
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return;
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}
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memset(&t, 0, sizeof(t));
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spi_message_init(&m);
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memset(cmd, 0xff, WSPI_INIT_CMD_LEN);
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t.tx_buf = cmd;
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t.len = WSPI_INIT_CMD_LEN;
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spi_message_add_tail(&t, &m);
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2009-08-07 18:33:34 +08:00
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spi_sync(wl_to_spi(wl), &m);
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2009-04-30 04:33:31 +08:00
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2009-06-12 19:17:39 +08:00
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wl1251_dump(DEBUG_SPI, "spi reset -> ", cmd, WSPI_INIT_CMD_LEN);
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2009-04-30 04:33:31 +08:00
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}
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2009-08-07 18:33:26 +08:00
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static void wl1251_spi_wake(struct wl1251 *wl)
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2009-04-30 04:33:31 +08:00
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{
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u8 crc[WSPI_INIT_CMD_CRC_LEN], *cmd;
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struct spi_transfer t;
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struct spi_message m;
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cmd = kzalloc(WSPI_INIT_CMD_LEN, GFP_KERNEL);
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if (!cmd) {
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2009-06-12 19:17:39 +08:00
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wl1251_error("could not allocate cmd for spi init");
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2009-04-30 04:33:31 +08:00
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return;
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}
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memset(crc, 0, sizeof(crc));
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memset(&t, 0, sizeof(t));
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spi_message_init(&m);
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/*
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* Set WSPI_INIT_COMMAND
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* the data is being send from the MSB to LSB
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*/
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cmd[2] = 0xff;
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cmd[3] = 0xff;
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cmd[1] = WSPI_INIT_CMD_START | WSPI_INIT_CMD_TX;
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cmd[0] = 0;
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cmd[7] = 0;
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cmd[6] |= HW_ACCESS_WSPI_INIT_CMD_MASK << 3;
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cmd[6] |= HW_ACCESS_WSPI_FIXED_BUSY_LEN & WSPI_INIT_CMD_FIXEDBUSY_LEN;
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if (HW_ACCESS_WSPI_FIXED_BUSY_LEN == 0)
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cmd[5] |= WSPI_INIT_CMD_DIS_FIXEDBUSY;
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else
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cmd[5] |= WSPI_INIT_CMD_EN_FIXEDBUSY;
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cmd[5] |= WSPI_INIT_CMD_IOD | WSPI_INIT_CMD_IP | WSPI_INIT_CMD_CS
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| WSPI_INIT_CMD_WSPI | WSPI_INIT_CMD_WS;
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crc[0] = cmd[1];
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crc[1] = cmd[0];
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crc[2] = cmd[7];
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crc[3] = cmd[6];
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crc[4] = cmd[5];
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cmd[4] |= crc7(0, crc, WSPI_INIT_CMD_CRC_LEN) << 1;
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cmd[4] |= WSPI_INIT_CMD_END;
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t.tx_buf = cmd;
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t.len = WSPI_INIT_CMD_LEN;
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spi_message_add_tail(&t, &m);
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2009-08-07 18:33:34 +08:00
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spi_sync(wl_to_spi(wl), &m);
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2009-04-30 04:33:31 +08:00
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2009-06-12 19:17:39 +08:00
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wl1251_dump(DEBUG_SPI, "spi init -> ", cmd, WSPI_INIT_CMD_LEN);
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2009-04-30 04:33:31 +08:00
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}
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2009-08-07 18:33:11 +08:00
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static void wl1251_spi_reset_wake(struct wl1251 *wl)
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{
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wl1251_spi_reset(wl);
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2009-08-07 18:33:26 +08:00
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wl1251_spi_wake(wl);
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2009-08-07 18:33:11 +08:00
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}
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static void wl1251_spi_read(struct wl1251 *wl, int addr, void *buf,
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size_t len)
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2009-04-30 04:33:31 +08:00
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{
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struct spi_transfer t[3];
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struct spi_message m;
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2009-06-12 19:14:55 +08:00
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u8 *busy_buf;
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2009-06-12 19:14:47 +08:00
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u32 *cmd;
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2009-04-30 04:33:31 +08:00
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2009-06-12 19:14:47 +08:00
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cmd = &wl->buffer_cmd;
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2009-06-12 19:14:55 +08:00
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busy_buf = wl->buffer_busyword;
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2009-06-12 19:14:47 +08:00
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*cmd = 0;
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*cmd |= WSPI_CMD_READ;
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*cmd |= (len << WSPI_CMD_BYTE_LENGTH_OFFSET) & WSPI_CMD_BYTE_LENGTH;
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*cmd |= addr & WSPI_CMD_BYTE_ADDR;
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2009-04-30 04:33:31 +08:00
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spi_message_init(&m);
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memset(t, 0, sizeof(t));
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2009-06-12 19:14:47 +08:00
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t[0].tx_buf = cmd;
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2009-04-30 04:33:31 +08:00
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t[0].len = 4;
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spi_message_add_tail(&t[0], &m);
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/* Busy and non busy words read */
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t[1].rx_buf = busy_buf;
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2009-06-12 19:17:39 +08:00
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t[1].len = WL1251_BUSY_WORD_LEN;
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2009-04-30 04:33:31 +08:00
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spi_message_add_tail(&t[1], &m);
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t[2].rx_buf = buf;
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t[2].len = len;
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spi_message_add_tail(&t[2], &m);
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2009-08-07 18:33:34 +08:00
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spi_sync(wl_to_spi(wl), &m);
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2009-04-30 04:33:31 +08:00
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/* FIXME: check busy words */
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2009-06-12 19:17:39 +08:00
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wl1251_dump(DEBUG_SPI, "spi_read cmd -> ", cmd, sizeof(*cmd));
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wl1251_dump(DEBUG_SPI, "spi_read buf <- ", buf, len);
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2009-04-30 04:33:31 +08:00
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}
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2009-08-07 18:33:11 +08:00
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static void wl1251_spi_write(struct wl1251 *wl, int addr, void *buf,
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size_t len)
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2009-04-30 04:33:31 +08:00
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{
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struct spi_transfer t[2];
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struct spi_message m;
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2009-06-12 19:14:47 +08:00
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u32 *cmd;
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2009-04-30 04:33:31 +08:00
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2009-06-12 19:14:47 +08:00
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cmd = &wl->buffer_cmd;
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*cmd = 0;
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*cmd |= WSPI_CMD_WRITE;
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*cmd |= (len << WSPI_CMD_BYTE_LENGTH_OFFSET) & WSPI_CMD_BYTE_LENGTH;
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*cmd |= addr & WSPI_CMD_BYTE_ADDR;
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2009-04-30 04:33:31 +08:00
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spi_message_init(&m);
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memset(t, 0, sizeof(t));
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|
2009-06-12 19:14:47 +08:00
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t[0].tx_buf = cmd;
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t[0].len = sizeof(*cmd);
|
2009-04-30 04:33:31 +08:00
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spi_message_add_tail(&t[0], &m);
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t[1].tx_buf = buf;
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t[1].len = len;
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spi_message_add_tail(&t[1], &m);
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|
2009-08-07 18:33:34 +08:00
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spi_sync(wl_to_spi(wl), &m);
|
2009-04-30 04:33:31 +08:00
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2009-06-12 19:17:39 +08:00
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wl1251_dump(DEBUG_SPI, "spi_write cmd -> ", cmd, sizeof(*cmd));
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wl1251_dump(DEBUG_SPI, "spi_write buf -> ", buf, len);
|
2009-04-30 04:33:31 +08:00
|
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}
|
2009-08-07 18:33:11 +08:00
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|
2009-08-07 18:33:49 +08:00
|
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static void wl1251_spi_enable_irq(struct wl1251 *wl)
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{
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return enable_irq(wl->irq);
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}
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static void wl1251_spi_disable_irq(struct wl1251 *wl)
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{
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return disable_irq(wl->irq);
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}
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2010-11-04 06:13:47 +08:00
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static int wl1251_spi_set_power(struct wl1251 *wl, bool enable)
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{
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if (wl->set_power)
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wl->set_power(enable);
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return 0;
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}
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|
2009-08-07 18:33:34 +08:00
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static const struct wl1251_if_operations wl1251_spi_ops = {
|
2009-08-07 18:33:11 +08:00
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.read = wl1251_spi_read,
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.write = wl1251_spi_write,
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.reset = wl1251_spi_reset_wake,
|
2009-08-07 18:33:49 +08:00
|
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.enable_irq = wl1251_spi_enable_irq,
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.disable_irq = wl1251_spi_disable_irq,
|
2010-11-04 06:13:47 +08:00
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.power = wl1251_spi_set_power,
|
2009-08-07 18:33:11 +08:00
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};
|
2009-08-07 18:33:26 +08:00
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static int __devinit wl1251_spi_probe(struct spi_device *spi)
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{
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struct wl12xx_platform_data *pdata;
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struct ieee80211_hw *hw;
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struct wl1251 *wl;
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int ret;
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pdata = spi->dev.platform_data;
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if (!pdata) {
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wl1251_error("no platform data");
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return -ENODEV;
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}
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hw = wl1251_alloc_hw();
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if (IS_ERR(hw))
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return PTR_ERR(hw);
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wl = hw->priv;
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SET_IEEE80211_DEV(hw, &spi->dev);
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dev_set_drvdata(&spi->dev, wl);
|
2009-08-07 18:33:34 +08:00
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wl->if_priv = spi;
|
2009-08-07 18:33:26 +08:00
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wl->if_ops = &wl1251_spi_ops;
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|
/* This is the only SPI value that we need to set here, the rest
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* comes from the board-peripherals file */
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|
|
spi->bits_per_word = 32;
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ret = spi_setup(spi);
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if (ret < 0) {
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|
|
wl1251_error("spi_setup failed");
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|
goto out_free;
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}
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wl->set_power = pdata->set_power;
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|
|
if (!wl->set_power) {
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|
|
wl1251_error("set power function missing in platform data");
|
|
|
|
return -ENODEV;
|
|
|
|
}
|
|
|
|
|
|
|
|
wl->irq = spi->irq;
|
|
|
|
if (wl->irq < 0) {
|
|
|
|
wl1251_error("irq missing in platform data");
|
|
|
|
return -ENODEV;
|
|
|
|
}
|
|
|
|
|
2009-11-18 00:50:09 +08:00
|
|
|
wl->use_eeprom = pdata->use_eeprom;
|
|
|
|
|
2009-08-07 18:33:26 +08:00
|
|
|
ret = request_irq(wl->irq, wl1251_irq, 0, DRIVER_NAME, wl);
|
|
|
|
if (ret < 0) {
|
|
|
|
wl1251_error("request_irq() failed: %d", ret);
|
|
|
|
goto out_free;
|
|
|
|
}
|
|
|
|
|
|
|
|
set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
|
|
|
|
|
|
|
|
disable_irq(wl->irq);
|
|
|
|
|
|
|
|
ret = wl1251_init_ieee80211(wl);
|
|
|
|
if (ret)
|
|
|
|
goto out_irq;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
out_irq:
|
|
|
|
free_irq(wl->irq, wl);
|
|
|
|
|
|
|
|
out_free:
|
|
|
|
ieee80211_free_hw(hw);
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int __devexit wl1251_spi_remove(struct spi_device *spi)
|
|
|
|
{
|
|
|
|
struct wl1251 *wl = dev_get_drvdata(&spi->dev);
|
|
|
|
|
2009-08-07 18:33:49 +08:00
|
|
|
free_irq(wl->irq, wl);
|
2009-08-07 18:33:26 +08:00
|
|
|
wl1251_free_hw(wl);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct spi_driver wl1251_spi_driver = {
|
|
|
|
.driver = {
|
2010-04-02 20:31:46 +08:00
|
|
|
.name = DRIVER_NAME,
|
2009-08-07 18:33:26 +08:00
|
|
|
.bus = &spi_bus_type,
|
|
|
|
.owner = THIS_MODULE,
|
|
|
|
},
|
|
|
|
|
|
|
|
.probe = wl1251_spi_probe,
|
|
|
|
.remove = __devexit_p(wl1251_spi_remove),
|
|
|
|
};
|
|
|
|
|
|
|
|
static int __init wl1251_spi_init(void)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = spi_register_driver(&wl1251_spi_driver);
|
|
|
|
if (ret < 0) {
|
|
|
|
wl1251_error("failed to register spi driver: %d", ret);
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
out:
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __exit wl1251_spi_exit(void)
|
|
|
|
{
|
|
|
|
spi_unregister_driver(&wl1251_spi_driver);
|
|
|
|
|
|
|
|
wl1251_notice("unloaded");
|
|
|
|
}
|
|
|
|
|
|
|
|
module_init(wl1251_spi_init);
|
|
|
|
module_exit(wl1251_spi_exit);
|
|
|
|
|
|
|
|
MODULE_LICENSE("GPL");
|
2010-08-23 03:46:15 +08:00
|
|
|
MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>");
|
2010-07-05 22:12:38 +08:00
|
|
|
MODULE_ALIAS("spi:wl1251");
|