linux/drivers/pcmcia/sa1111_generic.c

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/*
* linux/drivers/pcmcia/sa1111_generic.c
*
* We implement the generic parts of a SA1111 PCMCIA driver. This
* basically means we handle everything except controlling the
* power. Power is machine specific...
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/ioport.h>
#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/io.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 08:04:11 +00:00
#include <linux/slab.h>
#include <pcmcia/ss.h>
#include <mach/hardware.h>
#include <asm/hardware/sa1111.h>
#include <asm/irq.h>
#include "sa1111_generic.h"
#define IDX_IRQ_S0_READY_NINT (0)
#define IDX_IRQ_S0_CD_VALID (1)
#define IDX_IRQ_S0_BVD1_STSCHG (2)
#define IDX_IRQ_S1_READY_NINT (3)
#define IDX_IRQ_S1_CD_VALID (4)
#define IDX_IRQ_S1_BVD1_STSCHG (5)
static struct pcmcia_irqs irqs[] = {
{ 0, NO_IRQ, "SA1111 PCMCIA card detect" },
{ 0, NO_IRQ, "SA1111 PCMCIA BVD1" },
{ 1, NO_IRQ, "SA1111 CF card detect" },
{ 1, NO_IRQ, "SA1111 CF BVD1" },
};
static int sa1111_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
}
static void sa1111_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
{
soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
}
void sa1111_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
{
struct sa1111_pcmcia_socket *s = to_skt(skt);
unsigned long status = sa1111_readl(s->dev->mapbase + SA1111_PCSR);
switch (skt->nr) {
case 0:
state->detect = status & PCSR_S0_DETECT ? 0 : 1;
state->ready = status & PCSR_S0_READY ? 1 : 0;
state->bvd1 = status & PCSR_S0_BVD1 ? 1 : 0;
state->bvd2 = status & PCSR_S0_BVD2 ? 1 : 0;
state->wrprot = status & PCSR_S0_WP ? 1 : 0;
state->vs_3v = status & PCSR_S0_VS1 ? 0 : 1;
state->vs_Xv = status & PCSR_S0_VS2 ? 0 : 1;
break;
case 1:
state->detect = status & PCSR_S1_DETECT ? 0 : 1;
state->ready = status & PCSR_S1_READY ? 1 : 0;
state->bvd1 = status & PCSR_S1_BVD1 ? 1 : 0;
state->bvd2 = status & PCSR_S1_BVD2 ? 1 : 0;
state->wrprot = status & PCSR_S1_WP ? 1 : 0;
state->vs_3v = status & PCSR_S1_VS1 ? 0 : 1;
state->vs_Xv = status & PCSR_S1_VS2 ? 0 : 1;
break;
}
}
int sa1111_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
{
struct sa1111_pcmcia_socket *s = to_skt(skt);
unsigned int pccr_skt_mask, pccr_set_mask, val;
unsigned long flags;
switch (skt->nr) {
case 0:
pccr_skt_mask = PCCR_S0_RST|PCCR_S0_FLT|PCCR_S0_PWAITEN|PCCR_S0_PSE;
break;
case 1:
pccr_skt_mask = PCCR_S1_RST|PCCR_S1_FLT|PCCR_S1_PWAITEN|PCCR_S1_PSE;
break;
default:
return -1;
}
pccr_set_mask = 0;
if (state->Vcc != 0)
pccr_set_mask |= PCCR_S0_PWAITEN|PCCR_S1_PWAITEN;
if (state->Vcc == 50)
pccr_set_mask |= PCCR_S0_PSE|PCCR_S1_PSE;
if (state->flags & SS_RESET)
pccr_set_mask |= PCCR_S0_RST|PCCR_S1_RST;
if (state->flags & SS_OUTPUT_ENA)
pccr_set_mask |= PCCR_S0_FLT|PCCR_S1_FLT;
local_irq_save(flags);
val = sa1111_readl(s->dev->mapbase + SA1111_PCCR);
val &= ~pccr_skt_mask;
val |= pccr_set_mask & pccr_skt_mask;
sa1111_writel(val, s->dev->mapbase + SA1111_PCCR);
local_irq_restore(flags);
return 0;
}
void sa1111_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
{
soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs));
}
static void sa1111_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
{
soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs));
}
int sa1111_pcmcia_add(struct sa1111_dev *dev, struct pcmcia_low_level *ops,
int (*add)(struct soc_pcmcia_socket *))
{
struct sa1111_pcmcia_socket *s;
int i, ret = 0;
ops->hw_init = sa1111_pcmcia_hw_init;
ops->hw_shutdown = sa1111_pcmcia_hw_shutdown;
ops->socket_state = sa1111_pcmcia_socket_state;
ops->socket_suspend = sa1111_pcmcia_socket_suspend;
for (i = 0; i < ops->nr; i++) {
s = kzalloc(sizeof(*s), GFP_KERNEL);
if (!s)
return -ENOMEM;
s->soc.nr = ops->first + i;
s->soc.ops = ops;
s->soc.socket.owner = ops->owner;
s->soc.socket.dev.parent = &dev->dev;
s->soc.socket.pci_irq = s->soc.nr ?
dev->irq[IDX_IRQ_S0_READY_NINT] :
dev->irq[IDX_IRQ_S1_READY_NINT];
s->dev = dev;
ret = add(&s->soc);
if (ret == 0) {
s->next = dev_get_drvdata(&dev->dev);
dev_set_drvdata(&dev->dev, s);
} else
kfree(s);
}
return ret;
}
static int pcmcia_probe(struct sa1111_dev *dev)
{
void __iomem *base;
dev_set_drvdata(&dev->dev, NULL);
if (!request_mem_region(dev->res.start, 512,
SA1111_DRIVER_NAME(dev)))
return -EBUSY;
base = dev->mapbase;
/* Initialize PCMCIA IRQs */
irqs[0].irq = dev->irq[IDX_IRQ_S0_CD_VALID];
irqs[1].irq = dev->irq[IDX_IRQ_S0_BVD1_STSCHG];
irqs[2].irq = dev->irq[IDX_IRQ_S1_CD_VALID];
irqs[3].irq = dev->irq[IDX_IRQ_S1_BVD1_STSCHG];
/*
* Initialise the suspend state.
*/
sa1111_writel(PCSSR_S0_SLEEP | PCSSR_S1_SLEEP, base + SA1111_PCSSR);
sa1111_writel(PCCR_S0_FLT | PCCR_S1_FLT, base + SA1111_PCCR);
#ifdef CONFIG_SA1100_BADGE4
pcmcia_badge4_init(&dev->dev);
#endif
#ifdef CONFIG_SA1100_JORNADA720
pcmcia_jornada720_init(&dev->dev);
#endif
#ifdef CONFIG_ARCH_LUBBOCK
pcmcia_lubbock_init(dev);
#endif
#ifdef CONFIG_ASSABET_NEPONSET
pcmcia_neponset_init(dev);
#endif
return 0;
}
static int __devexit pcmcia_remove(struct sa1111_dev *dev)
{
struct sa1111_pcmcia_socket *next, *s = dev_get_drvdata(&dev->dev);
dev_set_drvdata(&dev->dev, NULL);
for (; s; s = next) {
next = s->next;
soc_pcmcia_remove_one(&s->soc);
kfree(s);
}
release_mem_region(dev->res.start, 512);
return 0;
}
static struct sa1111_driver pcmcia_driver = {
.drv = {
.name = "sa1111-pcmcia",
},
.devid = SA1111_DEVID_PCMCIA,
.probe = pcmcia_probe,
.remove = __devexit_p(pcmcia_remove),
};
static int __init sa1111_drv_pcmcia_init(void)
{
return sa1111_driver_register(&pcmcia_driver);
}
static void __exit sa1111_drv_pcmcia_exit(void)
{
sa1111_driver_unregister(&pcmcia_driver);
}
fs_initcall(sa1111_drv_pcmcia_init);
module_exit(sa1111_drv_pcmcia_exit);
MODULE_DESCRIPTION("SA1111 PCMCIA card socket driver");
MODULE_LICENSE("GPL");