2008-06-11 01:06:16 -06:00
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/*
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* file: drivers/pcmcia/bfin_cf.c
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*
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* based on: drivers/pcmcia/omap_cf.c
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* omap_cf.c -- OMAP 16xx CompactFlash controller driver
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*
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* Copyright (c) 2005 David Brownell
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* Copyright (c) 2006-2008 Michael Hennerich Analog Devices Inc.
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*
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* bugs: enter bugs at http://blackfin.uclinux.org/
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*
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* this program is free software; you can redistribute it and/or modify
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* it under the terms of the gnu general public license as published by
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* the free software foundation; either version 2, or (at your option)
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* any later version.
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*
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* this program is distributed in the hope that it will be useful,
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* but without any warranty; without even the implied warranty of
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* merchantability or fitness for a particular purpose. see the
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* gnu 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; see the file copying.
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* if not, write to the free software foundation,
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* 59 temple place - suite 330, boston, ma 02111-1307, usa.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/platform_device.h>
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#include <linux/errno.h>
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#include <linux/init.h>
|
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 02:04:11 -06:00
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#include <linux/slab.h>
|
2008-06-11 01:06:16 -06:00
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#include <linux/delay.h>
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#include <linux/interrupt.h>
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#include <linux/irq.h>
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#include <linux/io.h>
|
2016-02-02 12:53:23 -07:00
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#include <linux/gpio.h>
|
2008-06-11 01:06:16 -06:00
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#include <pcmcia/ss.h>
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|
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#include <pcmcia/cisreg.h>
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#define SZ_1K 0x00000400
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#define SZ_8K 0x00002000
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|
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#define SZ_2K (2 * SZ_1K)
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|
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#define POLL_INTERVAL (2 * HZ)
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|
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#define CF_ATASEL_ENA 0x20311802 /* Inverts RESET */
|
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|
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#define CF_ATASEL_DIS 0x20311800
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|
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#define bfin_cf_present(pfx) (gpio_get_value(pfx))
|
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/*--------------------------------------------------------------------------*/
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static const char driver_name[] = "bfin_cf_pcmcia";
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struct bfin_cf_socket {
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struct pcmcia_socket socket;
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struct timer_list timer;
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unsigned present:1;
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unsigned active:1;
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struct platform_device *pdev;
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|
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unsigned long phys_cf_io;
|
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|
|
unsigned long phys_cf_attr;
|
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|
|
u_int irq;
|
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|
|
u_short cd_pfx;
|
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|
|
};
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|
/*--------------------------------------------------------------------------*/
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|
static int bfin_cf_reset(void)
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|
|
{
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|
|
|
outw(0, CF_ATASEL_ENA);
|
|
|
|
mdelay(200);
|
|
|
|
outw(0, CF_ATASEL_DIS);
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|
return 0;
|
|
|
|
}
|
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static int bfin_cf_ss_init(struct pcmcia_socket *s)
|
|
|
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{
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|
|
return 0;
|
|
|
|
}
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|
/* the timer is primarily to kick this socket's pccardd */
|
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|
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static void bfin_cf_timer(unsigned long _cf)
|
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|
|
{
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|
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struct bfin_cf_socket *cf = (void *)_cf;
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|
unsigned short present = bfin_cf_present(cf->cd_pfx);
|
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|
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if (present != cf->present) {
|
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|
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cf->present = present;
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|
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dev_dbg(&cf->pdev->dev, ": card %s\n",
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present ? "present" : "gone");
|
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|
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pcmcia_parse_events(&cf->socket, SS_DETECT);
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|
|
}
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if (cf->active)
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mod_timer(&cf->timer, jiffies + POLL_INTERVAL);
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|
}
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static int bfin_cf_get_status(struct pcmcia_socket *s, u_int *sp)
|
|
|
|
{
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|
|
|
struct bfin_cf_socket *cf;
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|
if (!sp)
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return -EINVAL;
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cf = container_of(s, struct bfin_cf_socket, socket);
|
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|
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if (bfin_cf_present(cf->cd_pfx)) {
|
|
|
|
*sp = SS_READY | SS_DETECT | SS_POWERON | SS_3VCARD;
|
2010-03-07 02:51:23 -07:00
|
|
|
s->pcmcia_irq = 0;
|
2008-06-11 01:06:16 -06:00
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|
s->pci_irq = cf->irq;
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|
} else
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|
*sp = 0;
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|
return 0;
|
|
|
|
}
|
|
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|
|
static int
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bfin_cf_set_socket(struct pcmcia_socket *sock, struct socket_state_t *s)
|
|
|
|
{
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|
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struct bfin_cf_socket *cf;
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|
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|
cf = container_of(sock, struct bfin_cf_socket, socket);
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|
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|
switch (s->Vcc) {
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|
|
|
case 0:
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|
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|
case 33:
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|
|
break;
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|
case 50:
|
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|
|
break;
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|
default:
|
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|
|
return -EINVAL;
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|
|
|
}
|
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if (s->flags & SS_RESET) {
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|
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disable_irq(cf->irq);
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|
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bfin_cf_reset();
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|
|
enable_irq(cf->irq);
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|
|
}
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|
|
dev_dbg(&cf->pdev->dev, ": Vcc %d, io_irq %d, flags %04x csc %04x\n",
|
|
|
|
s->Vcc, s->io_irq, s->flags, s->csc_mask);
|
|
|
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|
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|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int bfin_cf_ss_suspend(struct pcmcia_socket *s)
|
|
|
|
{
|
|
|
|
return bfin_cf_set_socket(s, &dead_socket);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* regions are 2K each: mem, attrib, io (and reserved-for-ide) */
|
|
|
|
|
|
|
|
static int bfin_cf_set_io_map(struct pcmcia_socket *s, struct pccard_io_map *io)
|
|
|
|
{
|
|
|
|
struct bfin_cf_socket *cf;
|
|
|
|
|
|
|
|
cf = container_of(s, struct bfin_cf_socket, socket);
|
|
|
|
io->flags &= MAP_ACTIVE | MAP_ATTRIB | MAP_16BIT;
|
|
|
|
io->start = cf->phys_cf_io;
|
|
|
|
io->stop = io->start + SZ_2K - 1;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
bfin_cf_set_mem_map(struct pcmcia_socket *s, struct pccard_mem_map *map)
|
|
|
|
{
|
|
|
|
struct bfin_cf_socket *cf;
|
|
|
|
|
|
|
|
if (map->card_start)
|
|
|
|
return -EINVAL;
|
|
|
|
cf = container_of(s, struct bfin_cf_socket, socket);
|
|
|
|
map->static_start = cf->phys_cf_io;
|
|
|
|
map->flags &= MAP_ACTIVE | MAP_ATTRIB | MAP_16BIT;
|
|
|
|
if (map->flags & MAP_ATTRIB)
|
|
|
|
map->static_start = cf->phys_cf_attr;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct pccard_operations bfin_cf_ops = {
|
|
|
|
.init = bfin_cf_ss_init,
|
|
|
|
.suspend = bfin_cf_ss_suspend,
|
|
|
|
.get_status = bfin_cf_get_status,
|
|
|
|
.set_socket = bfin_cf_set_socket,
|
|
|
|
.set_io_map = bfin_cf_set_io_map,
|
|
|
|
.set_mem_map = bfin_cf_set_mem_map,
|
|
|
|
};
|
|
|
|
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
|
2012-11-19 11:23:12 -07:00
|
|
|
static int bfin_cf_probe(struct platform_device *pdev)
|
2008-06-11 01:06:16 -06:00
|
|
|
{
|
|
|
|
struct bfin_cf_socket *cf;
|
|
|
|
struct resource *io_mem, *attr_mem;
|
|
|
|
int irq;
|
|
|
|
unsigned short cd_pfx;
|
|
|
|
int status = 0;
|
|
|
|
|
|
|
|
dev_info(&pdev->dev, "Blackfin CompactFlash/PCMCIA Socket Driver\n");
|
|
|
|
|
|
|
|
irq = platform_get_irq(pdev, 0);
|
2010-01-13 04:05:45 -07:00
|
|
|
if (irq <= 0)
|
2008-06-11 01:06:16 -06:00
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
cd_pfx = platform_get_irq(pdev, 1); /*Card Detect GPIO PIN */
|
|
|
|
|
|
|
|
if (gpio_request(cd_pfx, "pcmcia: CD")) {
|
|
|
|
dev_err(&pdev->dev,
|
|
|
|
"Failed ro request Card Detect GPIO_%d\n",
|
|
|
|
cd_pfx);
|
|
|
|
return -EBUSY;
|
|
|
|
}
|
|
|
|
gpio_direction_input(cd_pfx);
|
|
|
|
|
|
|
|
cf = kzalloc(sizeof *cf, GFP_KERNEL);
|
|
|
|
if (!cf) {
|
|
|
|
gpio_free(cd_pfx);
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
|
|
|
cf->cd_pfx = cd_pfx;
|
|
|
|
|
|
|
|
setup_timer(&cf->timer, bfin_cf_timer, (unsigned long)cf);
|
|
|
|
|
|
|
|
cf->pdev = pdev;
|
|
|
|
platform_set_drvdata(pdev, cf);
|
|
|
|
|
|
|
|
cf->irq = irq;
|
|
|
|
cf->socket.pci_irq = irq;
|
|
|
|
|
2011-03-28 09:49:12 -06:00
|
|
|
irq_set_irq_type(irq, IRQF_TRIGGER_LOW);
|
2008-06-11 01:06:16 -06:00
|
|
|
|
|
|
|
io_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
|
|
attr_mem = platform_get_resource(pdev, IORESOURCE_MEM, 1);
|
|
|
|
|
|
|
|
if (!io_mem || !attr_mem)
|
|
|
|
goto fail0;
|
|
|
|
|
|
|
|
cf->phys_cf_io = io_mem->start;
|
|
|
|
cf->phys_cf_attr = attr_mem->start;
|
|
|
|
|
|
|
|
/* pcmcia layer only remaps "real" memory */
|
|
|
|
cf->socket.io_offset = (unsigned long)
|
|
|
|
ioremap(cf->phys_cf_io, SZ_2K);
|
|
|
|
|
|
|
|
if (!cf->socket.io_offset)
|
|
|
|
goto fail0;
|
|
|
|
|
|
|
|
dev_err(&pdev->dev, ": on irq %d\n", irq);
|
|
|
|
|
|
|
|
dev_dbg(&pdev->dev, ": %s\n",
|
|
|
|
bfin_cf_present(cf->cd_pfx) ? "present" : "(not present)");
|
|
|
|
|
|
|
|
cf->socket.owner = THIS_MODULE;
|
|
|
|
cf->socket.dev.parent = &pdev->dev;
|
|
|
|
cf->socket.ops = &bfin_cf_ops;
|
|
|
|
cf->socket.resource_ops = &pccard_static_ops;
|
|
|
|
cf->socket.features = SS_CAP_PCCARD | SS_CAP_STATIC_MAP
|
|
|
|
| SS_CAP_MEM_ALIGN;
|
|
|
|
cf->socket.map_size = SZ_2K;
|
|
|
|
|
|
|
|
status = pcmcia_register_socket(&cf->socket);
|
|
|
|
if (status < 0)
|
|
|
|
goto fail2;
|
|
|
|
|
|
|
|
cf->active = 1;
|
|
|
|
mod_timer(&cf->timer, jiffies + POLL_INTERVAL);
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
fail2:
|
|
|
|
iounmap((void __iomem *)cf->socket.io_offset);
|
|
|
|
release_mem_region(cf->phys_cf_io, SZ_8K);
|
|
|
|
|
|
|
|
fail0:
|
|
|
|
gpio_free(cf->cd_pfx);
|
|
|
|
kfree(cf);
|
|
|
|
platform_set_drvdata(pdev, NULL);
|
|
|
|
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
2012-11-19 11:26:05 -07:00
|
|
|
static int bfin_cf_remove(struct platform_device *pdev)
|
2008-06-11 01:06:16 -06:00
|
|
|
{
|
|
|
|
struct bfin_cf_socket *cf = platform_get_drvdata(pdev);
|
|
|
|
|
|
|
|
gpio_free(cf->cd_pfx);
|
|
|
|
cf->active = 0;
|
|
|
|
pcmcia_unregister_socket(&cf->socket);
|
|
|
|
del_timer_sync(&cf->timer);
|
|
|
|
iounmap((void __iomem *)cf->socket.io_offset);
|
|
|
|
release_mem_region(cf->phys_cf_io, SZ_8K);
|
|
|
|
platform_set_drvdata(pdev, NULL);
|
|
|
|
kfree(cf);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct platform_driver bfin_cf_driver = {
|
|
|
|
.driver = {
|
2013-11-12 12:07:18 -07:00
|
|
|
.name = driver_name,
|
2008-06-11 01:06:16 -06:00
|
|
|
},
|
|
|
|
.probe = bfin_cf_probe,
|
2012-11-19 11:20:38 -07:00
|
|
|
.remove = bfin_cf_remove,
|
2008-06-11 01:06:16 -06:00
|
|
|
};
|
|
|
|
|
2011-11-26 21:53:06 -07:00
|
|
|
module_platform_driver(bfin_cf_driver);
|
2008-06-11 01:06:16 -06:00
|
|
|
|
2008-12-15 14:54:14 -07:00
|
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MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
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2008-06-11 01:06:16 -06:00
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MODULE_DESCRIPTION("BFIN CF/PCMCIA Driver");
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MODULE_LICENSE("GPL");
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