aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/common/sa1111.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/common/sa1111.c')
-rw-r--r--arch/arm/common/sa1111.c522
1 files changed, 338 insertions, 184 deletions
diff --git a/arch/arm/common/sa1111.c b/arch/arm/common/sa1111.c
index 8ba7044c554..e57d7e5bf96 100644
--- a/arch/arm/common/sa1111.c
+++ b/arch/arm/common/sa1111.c
@@ -16,6 +16,7 @@
*/
#include <linux/module.h>
#include <linux/init.h>
+#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/errno.h>
@@ -28,14 +29,67 @@
#include <linux/io.h>
#include <mach/hardware.h>
-#include <asm/mach-types.h>
-#include <asm/irq.h>
#include <asm/mach/irq.h>
+#include <asm/mach-types.h>
#include <asm/sizes.h>
#include <asm/hardware/sa1111.h>
-extern void __init sa1110_mb_enable(void);
+/* SA1111 IRQs */
+#define IRQ_GPAIN0 (0)
+#define IRQ_GPAIN1 (1)
+#define IRQ_GPAIN2 (2)
+#define IRQ_GPAIN3 (3)
+#define IRQ_GPBIN0 (4)
+#define IRQ_GPBIN1 (5)
+#define IRQ_GPBIN2 (6)
+#define IRQ_GPBIN3 (7)
+#define IRQ_GPBIN4 (8)
+#define IRQ_GPBIN5 (9)
+#define IRQ_GPCIN0 (10)
+#define IRQ_GPCIN1 (11)
+#define IRQ_GPCIN2 (12)
+#define IRQ_GPCIN3 (13)
+#define IRQ_GPCIN4 (14)
+#define IRQ_GPCIN5 (15)
+#define IRQ_GPCIN6 (16)
+#define IRQ_GPCIN7 (17)
+#define IRQ_MSTXINT (18)
+#define IRQ_MSRXINT (19)
+#define IRQ_MSSTOPERRINT (20)
+#define IRQ_TPTXINT (21)
+#define IRQ_TPRXINT (22)
+#define IRQ_TPSTOPERRINT (23)
+#define SSPXMTINT (24)
+#define SSPRCVINT (25)
+#define SSPROR (26)
+#define AUDXMTDMADONEA (32)
+#define AUDRCVDMADONEA (33)
+#define AUDXMTDMADONEB (34)
+#define AUDRCVDMADONEB (35)
+#define AUDTFSR (36)
+#define AUDRFSR (37)
+#define AUDTUR (38)
+#define AUDROR (39)
+#define AUDDTS (40)
+#define AUDRDD (41)
+#define AUDSTO (42)
+#define IRQ_USBPWR (43)
+#define IRQ_HCIM (44)
+#define IRQ_HCIBUFFACC (45)
+#define IRQ_HCIRMTWKP (46)
+#define IRQ_NHCIMFCIR (47)
+#define IRQ_USB_PORT_RESUME (48)
+#define IRQ_S0_READY_NINT (49)
+#define IRQ_S1_READY_NINT (50)
+#define IRQ_S0_CD_VALID (51)
+#define IRQ_S1_CD_VALID (52)
+#define IRQ_S0_BVD1_STSCHG (53)
+#define IRQ_S1_BVD1_STSCHG (54)
+#define SA1111_IRQ_NR (55)
+
+extern void sa1110_mb_enable(void);
+extern void sa1110_mb_disable(void);
/*
* We keep the following data for the overall SA1111. Note that the
@@ -49,8 +103,10 @@ struct sa1111 {
struct clk *clk;
unsigned long phys;
int irq;
+ int irq_base; /* base for cascaded on-chip IRQs */
spinlock_t lock;
void __iomem *base;
+ struct sa1111_platform_data *pdata;
#ifdef CONFIG_PM
void *saved_state;
#endif
@@ -65,6 +121,7 @@ static struct sa1111 *g_sa1111;
struct sa1111_dev_info {
unsigned long offset;
unsigned long skpcr_mask;
+ bool dma;
unsigned int devid;
unsigned int irq[6];
};
@@ -73,6 +130,7 @@ static struct sa1111_dev_info sa1111_devices[] = {
{
.offset = SA1111_USB,
.skpcr_mask = SKPCR_UCLKEN,
+ .dma = true,
.devid = SA1111_DEVID_USB,
.irq = {
IRQ_USBPWR,
@@ -86,6 +144,7 @@ static struct sa1111_dev_info sa1111_devices[] = {
{
.offset = 0x0600,
.skpcr_mask = SKPCR_I2SCLKEN | SKPCR_L3CLKEN,
+ .dma = true,
.devid = SA1111_DEVID_SAC,
.irq = {
AUDXMTDMADONEA,
@@ -102,7 +161,7 @@ static struct sa1111_dev_info sa1111_devices[] = {
{
.offset = SA1111_KBD,
.skpcr_mask = SKPCR_PTCLKEN,
- .devid = SA1111_DEVID_PS2,
+ .devid = SA1111_DEVID_PS2_KBD,
.irq = {
IRQ_TPRXINT,
IRQ_TPTXINT
@@ -111,7 +170,7 @@ static struct sa1111_dev_info sa1111_devices[] = {
{
.offset = SA1111_MSE,
.skpcr_mask = SKPCR_PMCLKEN,
- .devid = SA1111_DEVID_PS2,
+ .devid = SA1111_DEVID_PS2_MSE,
.irq = {
IRQ_MSRXINT,
IRQ_MSTXINT
@@ -132,17 +191,6 @@ static struct sa1111_dev_info sa1111_devices[] = {
},
};
-void __init sa1111_adjust_zones(int node, unsigned long *size, unsigned long *holes)
-{
- unsigned int sz = SZ_1M >> PAGE_SHIFT;
-
- if (node != 0)
- sz = 0;
-
- size[1] = size[0] - sz;
- size[0] = sz;
-}
-
/*
* SA1111 interrupt support. Since clearing an IRQ while there are
* active IRQs causes the interrupt output to pulse, the upper levels
@@ -152,58 +200,61 @@ static void
sa1111_irq_handler(unsigned int irq, struct irq_desc *desc)
{
unsigned int stat0, stat1, i;
- void __iomem *base = get_irq_data(irq);
+ struct sa1111 *sachip = irq_get_handler_data(irq);
+ void __iomem *mapbase = sachip->base + SA1111_INTC;
- stat0 = sa1111_readl(base + SA1111_INTSTATCLR0);
- stat1 = sa1111_readl(base + SA1111_INTSTATCLR1);
+ stat0 = sa1111_readl(mapbase + SA1111_INTSTATCLR0);
+ stat1 = sa1111_readl(mapbase + SA1111_INTSTATCLR1);
- sa1111_writel(stat0, base + SA1111_INTSTATCLR0);
+ sa1111_writel(stat0, mapbase + SA1111_INTSTATCLR0);
- desc->chip->ack(irq);
+ desc->irq_data.chip->irq_ack(&desc->irq_data);
- sa1111_writel(stat1, base + SA1111_INTSTATCLR1);
+ sa1111_writel(stat1, mapbase + SA1111_INTSTATCLR1);
if (stat0 == 0 && stat1 == 0) {
do_bad_IRQ(irq, desc);
return;
}
- for (i = IRQ_SA1111_START; stat0; i++, stat0 >>= 1)
+ for (i = 0; stat0; i++, stat0 >>= 1)
if (stat0 & 1)
- handle_edge_irq(i, irq_desc + i);
+ generic_handle_irq(i + sachip->irq_base);
- for (i = IRQ_SA1111_START + 32; stat1; i++, stat1 >>= 1)
+ for (i = 32; stat1; i++, stat1 >>= 1)
if (stat1 & 1)
- handle_edge_irq(i, irq_desc + i);
+ generic_handle_irq(i + sachip->irq_base);
/* For level-based interrupts */
- desc->chip->unmask(irq);
+ desc->irq_data.chip->irq_unmask(&desc->irq_data);
}
-#define SA1111_IRQMASK_LO(x) (1 << (x - IRQ_SA1111_START))
-#define SA1111_IRQMASK_HI(x) (1 << (x - IRQ_SA1111_START - 32))
+#define SA1111_IRQMASK_LO(x) (1 << (x - sachip->irq_base))
+#define SA1111_IRQMASK_HI(x) (1 << (x - sachip->irq_base - 32))
-static void sa1111_ack_irq(unsigned int irq)
+static void sa1111_ack_irq(struct irq_data *d)
{
}
-static void sa1111_mask_lowirq(unsigned int irq)
+static void sa1111_mask_lowirq(struct irq_data *d)
{
- void __iomem *mapbase = get_irq_chip_data(irq);
+ struct sa1111 *sachip = irq_data_get_irq_chip_data(d);
+ void __iomem *mapbase = sachip->base + SA1111_INTC;
unsigned long ie0;
ie0 = sa1111_readl(mapbase + SA1111_INTEN0);
- ie0 &= ~SA1111_IRQMASK_LO(irq);
+ ie0 &= ~SA1111_IRQMASK_LO(d->irq);
writel(ie0, mapbase + SA1111_INTEN0);
}
-static void sa1111_unmask_lowirq(unsigned int irq)
+static void sa1111_unmask_lowirq(struct irq_data *d)
{
- void __iomem *mapbase = get_irq_chip_data(irq);
+ struct sa1111 *sachip = irq_data_get_irq_chip_data(d);
+ void __iomem *mapbase = sachip->base + SA1111_INTC;
unsigned long ie0;
ie0 = sa1111_readl(mapbase + SA1111_INTEN0);
- ie0 |= SA1111_IRQMASK_LO(irq);
+ ie0 |= SA1111_IRQMASK_LO(d->irq);
sa1111_writel(ie0, mapbase + SA1111_INTEN0);
}
@@ -214,10 +265,11 @@ static void sa1111_unmask_lowirq(unsigned int irq)
* be triggered. In fact, its very difficult, if not impossible to get
* INTSET to re-trigger the interrupt.
*/
-static int sa1111_retrigger_lowirq(unsigned int irq)
+static int sa1111_retrigger_lowirq(struct irq_data *d)
{
- unsigned int mask = SA1111_IRQMASK_LO(irq);
- void __iomem *mapbase = get_irq_chip_data(irq);
+ struct sa1111 *sachip = irq_data_get_irq_chip_data(d);
+ void __iomem *mapbase = sachip->base + SA1111_INTC;
+ unsigned int mask = SA1111_IRQMASK_LO(d->irq);
unsigned long ip0;
int i;
@@ -225,20 +277,21 @@ static int sa1111_retrigger_lowirq(unsigned int irq)
for (i = 0; i < 8; i++) {
sa1111_writel(ip0 ^ mask, mapbase + SA1111_INTPOL0);
sa1111_writel(ip0, mapbase + SA1111_INTPOL0);
- if (sa1111_readl(mapbase + SA1111_INTSTATCLR1) & mask)
+ if (sa1111_readl(mapbase + SA1111_INTSTATCLR0) & mask)
break;
}
if (i == 8)
printk(KERN_ERR "Danger Will Robinson: failed to "
- "re-trigger IRQ%d\n", irq);
+ "re-trigger IRQ%d\n", d->irq);
return i == 8 ? -1 : 0;
}
-static int sa1111_type_lowirq(unsigned int irq, unsigned int flags)
+static int sa1111_type_lowirq(struct irq_data *d, unsigned int flags)
{
- unsigned int mask = SA1111_IRQMASK_LO(irq);
- void __iomem *mapbase = get_irq_chip_data(irq);
+ struct sa1111 *sachip = irq_data_get_irq_chip_data(d);
+ void __iomem *mapbase = sachip->base + SA1111_INTC;
+ unsigned int mask = SA1111_IRQMASK_LO(d->irq);
unsigned long ip0;
if (flags == IRQ_TYPE_PROBE)
@@ -258,10 +311,11 @@ static int sa1111_type_lowirq(unsigned int irq, unsigned int flags)
return 0;
}
-static int sa1111_wake_lowirq(unsigned int irq, unsigned int on)
+static int sa1111_wake_lowirq(struct irq_data *d, unsigned int on)
{
- unsigned int mask = SA1111_IRQMASK_LO(irq);
- void __iomem *mapbase = get_irq_chip_data(irq);
+ struct sa1111 *sachip = irq_data_get_irq_chip_data(d);
+ void __iomem *mapbase = sachip->base + SA1111_INTC;
+ unsigned int mask = SA1111_IRQMASK_LO(d->irq);
unsigned long we0;
we0 = sa1111_readl(mapbase + SA1111_WAKEEN0);
@@ -276,31 +330,33 @@ static int sa1111_wake_lowirq(unsigned int irq, unsigned int on)
static struct irq_chip sa1111_low_chip = {
.name = "SA1111-l",
- .ack = sa1111_ack_irq,
- .mask = sa1111_mask_lowirq,
- .unmask = sa1111_unmask_lowirq,
- .retrigger = sa1111_retrigger_lowirq,
- .set_type = sa1111_type_lowirq,
- .set_wake = sa1111_wake_lowirq,
+ .irq_ack = sa1111_ack_irq,
+ .irq_mask = sa1111_mask_lowirq,
+ .irq_unmask = sa1111_unmask_lowirq,
+ .irq_retrigger = sa1111_retrigger_lowirq,
+ .irq_set_type = sa1111_type_lowirq,
+ .irq_set_wake = sa1111_wake_lowirq,
};
-static void sa1111_mask_highirq(unsigned int irq)
+static void sa1111_mask_highirq(struct irq_data *d)
{
- void __iomem *mapbase = get_irq_chip_data(irq);
+ struct sa1111 *sachip = irq_data_get_irq_chip_data(d);
+ void __iomem *mapbase = sachip->base + SA1111_INTC;
unsigned long ie1;
ie1 = sa1111_readl(mapbase + SA1111_INTEN1);
- ie1 &= ~SA1111_IRQMASK_HI(irq);
+ ie1 &= ~SA1111_IRQMASK_HI(d->irq);
sa1111_writel(ie1, mapbase + SA1111_INTEN1);
}
-static void sa1111_unmask_highirq(unsigned int irq)
+static void sa1111_unmask_highirq(struct irq_data *d)
{
- void __iomem *mapbase = get_irq_chip_data(irq);
+ struct sa1111 *sachip = irq_data_get_irq_chip_data(d);
+ void __iomem *mapbase = sachip->base + SA1111_INTC;
unsigned long ie1;
ie1 = sa1111_readl(mapbase + SA1111_INTEN1);
- ie1 |= SA1111_IRQMASK_HI(irq);
+ ie1 |= SA1111_IRQMASK_HI(d->irq);
sa1111_writel(ie1, mapbase + SA1111_INTEN1);
}
@@ -311,10 +367,11 @@ static void sa1111_unmask_highirq(unsigned int irq)
* be triggered. In fact, its very difficult, if not impossible to get
* INTSET to re-trigger the interrupt.
*/
-static int sa1111_retrigger_highirq(unsigned int irq)
+static int sa1111_retrigger_highirq(struct irq_data *d)
{
- unsigned int mask = SA1111_IRQMASK_HI(irq);
- void __iomem *mapbase = get_irq_chip_data(irq);
+ struct sa1111 *sachip = irq_data_get_irq_chip_data(d);
+ void __iomem *mapbase = sachip->base + SA1111_INTC;
+ unsigned int mask = SA1111_IRQMASK_HI(d->irq);
unsigned long ip1;
int i;
@@ -328,14 +385,15 @@ static int sa1111_retrigger_highirq(unsigned int irq)
if (i == 8)
printk(KERN_ERR "Danger Will Robinson: failed to "
- "re-trigger IRQ%d\n", irq);
+ "re-trigger IRQ%d\n", d->irq);
return i == 8 ? -1 : 0;
}
-static int sa1111_type_highirq(unsigned int irq, unsigned int flags)
+static int sa1111_type_highirq(struct irq_data *d, unsigned int flags)
{
- unsigned int mask = SA1111_IRQMASK_HI(irq);
- void __iomem *mapbase = get_irq_chip_data(irq);
+ struct sa1111 *sachip = irq_data_get_irq_chip_data(d);
+ void __iomem *mapbase = sachip->base + SA1111_INTC;
+ unsigned int mask = SA1111_IRQMASK_HI(d->irq);
unsigned long ip1;
if (flags == IRQ_TYPE_PROBE)
@@ -355,10 +413,11 @@ static int sa1111_type_highirq(unsigned int irq, unsigned int flags)
return 0;
}
-static int sa1111_wake_highirq(unsigned int irq, unsigned int on)
+static int sa1111_wake_highirq(struct irq_data *d, unsigned int on)
{
- unsigned int mask = SA1111_IRQMASK_HI(irq);
- void __iomem *mapbase = get_irq_chip_data(irq);
+ struct sa1111 *sachip = irq_data_get_irq_chip_data(d);
+ void __iomem *mapbase = sachip->base + SA1111_INTC;
+ unsigned int mask = SA1111_IRQMASK_HI(d->irq);
unsigned long we1;
we1 = sa1111_readl(mapbase + SA1111_WAKEEN1);
@@ -373,24 +432,36 @@ static int sa1111_wake_highirq(unsigned int irq, unsigned int on)
static struct irq_chip sa1111_high_chip = {
.name = "SA1111-h",
- .ack = sa1111_ack_irq,
- .mask = sa1111_mask_highirq,
- .unmask = sa1111_unmask_highirq,
- .retrigger = sa1111_retrigger_highirq,
- .set_type = sa1111_type_highirq,
- .set_wake = sa1111_wake_highirq,
+ .irq_ack = sa1111_ack_irq,
+ .irq_mask = sa1111_mask_highirq,
+ .irq_unmask = sa1111_unmask_highirq,
+ .irq_retrigger = sa1111_retrigger_highirq,
+ .irq_set_type = sa1111_type_highirq,
+ .irq_set_wake = sa1111_wake_highirq,
};
-static void sa1111_setup_irq(struct sa1111 *sachip)
+static int sa1111_setup_irq(struct sa1111 *sachip, unsigned irq_base)
{
void __iomem *irqbase = sachip->base + SA1111_INTC;
- unsigned int irq;
+ unsigned i, irq;
+ int ret;
/*
* We're guaranteed that this region hasn't been taken.
*/
request_mem_region(sachip->phys + SA1111_INTC, 512, "irq");
+ ret = irq_alloc_descs(-1, irq_base, SA1111_IRQ_NR, -1);
+ if (ret <= 0) {
+ dev_err(sachip->dev, "unable to allocate %u irqs: %d\n",
+ SA1111_IRQ_NR, ret);
+ if (ret == 0)
+ ret = -EINVAL;
+ return ret;
+ }
+
+ sachip->irq_base = ret;
+
/* disable all IRQs */
sa1111_writel(0, irqbase + SA1111_INTEN0);
sa1111_writel(0, irqbase + SA1111_INTEN1);
@@ -410,26 +481,33 @@ static void sa1111_setup_irq(struct sa1111 *sachip)
sa1111_writel(~0, irqbase + SA1111_INTSTATCLR0);
sa1111_writel(~0, irqbase + SA1111_INTSTATCLR1);
- for (irq = IRQ_GPAIN0; irq <= SSPROR; irq++) {
- set_irq_chip(irq, &sa1111_low_chip);
- set_irq_chip_data(irq, irqbase);
- set_irq_handler(irq, handle_edge_irq);
+ for (i = IRQ_GPAIN0; i <= SSPROR; i++) {
+ irq = sachip->irq_base + i;
+ irq_set_chip_and_handler(irq, &sa1111_low_chip,
+ handle_edge_irq);
+ irq_set_chip_data(irq, sachip);
set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
}
- for (irq = AUDXMTDMADONEA; irq <= IRQ_S1_BVD1_STSCHG; irq++) {
- set_irq_chip(irq, &sa1111_high_chip);
- set_irq_chip_data(irq, irqbase);
- set_irq_handler(irq, handle_edge_irq);
+ for (i = AUDXMTDMADONEA; i <= IRQ_S1_BVD1_STSCHG; i++) {
+ irq = sachip->irq_base + i;
+ irq_set_chip_and_handler(irq, &sa1111_high_chip,
+ handle_edge_irq);
+ irq_set_chip_data(irq, sachip);
set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
}
/*
* Register SA1111 interrupt
*/
- set_irq_type(sachip->irq, IRQ_TYPE_EDGE_RISING);
- set_irq_data(sachip->irq, irqbase);
- set_irq_chained_handler(sachip->irq, sa1111_irq_handler);
+ irq_set_irq_type(sachip->irq, IRQ_TYPE_EDGE_RISING);
+ irq_set_handler_data(sachip->irq, sachip);
+ irq_set_chained_handler(sachip->irq, sa1111_irq_handler);
+
+ dev_info(sachip->dev, "Providing IRQ%u-%u\n",
+ sachip->irq_base, sachip->irq_base + SA1111_IRQ_NR - 1);
+
+ return 0;
}
/*
@@ -526,14 +604,12 @@ sa1111_configure_smc(struct sa1111 *sachip, int sdram, unsigned int drac,
sachip->dev->coherent_dma_mask &= sa1111_dma_mask[drac >> 2];
}
-
#endif
static void sa1111_dev_release(struct device *_dev)
{
struct sa1111_dev *dev = SA1111_DEV(_dev);
- release_resource(&dev->res);
kfree(dev);
}
@@ -542,66 +618,58 @@ sa1111_init_one_child(struct sa1111 *sachip, struct resource *parent,
struct sa1111_dev_info *info)
{
struct sa1111_dev *dev;
+ unsigned i;
int ret;
dev = kzalloc(sizeof(struct sa1111_dev), GFP_KERNEL);
if (!dev) {
ret = -ENOMEM;
- goto out;
+ goto err_alloc;
}
+ device_initialize(&dev->dev);
dev_set_name(&dev->dev, "%4.4lx", info->offset);
dev->devid = info->devid;
dev->dev.parent = sachip->dev;
dev->dev.bus = &sa1111_bus_type;
dev->dev.release = sa1111_dev_release;
- dev->dev.coherent_dma_mask = sachip->dev->coherent_dma_mask;
dev->res.start = sachip->phys + info->offset;
dev->res.end = dev->res.start + 511;
dev->res.name = dev_name(&dev->dev);
dev->res.flags = IORESOURCE_MEM;
dev->mapbase = sachip->base + info->offset;
dev->skpcr_mask = info->skpcr_mask;
- memmove(dev->irq, info->irq, sizeof(dev->irq));
-
- ret = request_resource(parent, &dev->res);
- if (ret) {
- printk("SA1111: failed to allocate resource for %s\n",
- dev->res.name);
- dev_set_name(&dev->dev, NULL);
- kfree(dev);
- goto out;
- }
-
- ret = device_register(&dev->dev);
- if (ret) {
- release_resource(&dev->res);
- kfree(dev);
- goto out;
- }
+ for (i = 0; i < ARRAY_SIZE(info->irq); i++)
+ dev->irq[i] = sachip->irq_base + info->irq[i];
-#ifdef CONFIG_DMABOUNCE
/*
- * If the parent device has a DMA mask associated with it,
- * propagate it down to the children.
+ * If the parent device has a DMA mask associated with it, and
+ * this child supports DMA, propagate it down to the children.
*/
- if (sachip->dev->dma_mask) {
+ if (info->dma && sachip->dev->dma_mask) {
dev->dma_mask = *sachip->dev->dma_mask;
dev->dev.dma_mask = &dev->dma_mask;
+ dev->dev.coherent_dma_mask = sachip->dev->coherent_dma_mask;
+ }
- if (dev->dma_mask != 0xffffffffUL) {
- ret = dmabounce_register_dev(&dev->dev, 1024, 4096);
- if (ret) {
- dev_err(&dev->dev, "SA1111: Failed to register"
- " with dmabounce\n");
- device_unregister(&dev->dev);
- }
- }
+ ret = request_resource(parent, &dev->res);
+ if (ret) {
+ dev_err(sachip->dev, "failed to allocate resource for %s\n",
+ dev->res.name);
+ goto err_resource;
}
-#endif
-out:
+ ret = device_add(&dev->dev);
+ if (ret)
+ goto err_add;
+ return 0;
+
+ err_add:
+ release_resource(&dev->res);
+ err_resource:
+ put_device(&dev->dev);
+ err_alloc:
return ret;
}
@@ -615,16 +683,20 @@ out:
* Returns:
* %-ENODEV device not found.
* %-EBUSY physical address already marked in-use.
+ * %-EINVAL no platform data passed
* %0 successful.
*/
-static int
-__sa1111_probe(struct device *me, struct resource *mem, int irq)
+static int __sa1111_probe(struct device *me, struct resource *mem, int irq)
{
+ struct sa1111_platform_data *pd = me->platform_data;
struct sa1111 *sachip;
unsigned long id;
unsigned int has_devs;
int i, ret = -ENODEV;
+ if (!pd)
+ return -EINVAL;
+
sachip = kzalloc(sizeof(struct sa1111), GFP_KERNEL);
if (!sachip)
return -ENOMEM;
@@ -635,11 +707,16 @@ __sa1111_probe(struct device *me, struct resource *mem, int irq)
goto err_free;
}
+ ret = clk_prepare(sachip->clk);
+ if (ret)
+ goto err_clkput;
+
spin_lock_init(&sachip->lock);
sachip->dev = me;
dev_set_drvdata(sachip->dev, sachip);
+ sachip->pdata = pd;
sachip->phys = mem->start;
sachip->irq = irq;
@@ -650,7 +727,7 @@ __sa1111_probe(struct device *me, struct resource *mem, int irq)
sachip->base = ioremap(mem->start, PAGE_SIZE * 2);
if (!sachip->base) {
ret = -ENOMEM;
- goto err_clkput;
+ goto err_clk_unprep;
}
/*
@@ -672,6 +749,16 @@ __sa1111_probe(struct device *me, struct resource *mem, int irq)
*/
sa1111_wake(sachip);
+ /*
+ * The interrupt controller must be initialised before any
+ * other device to ensure that the interrupts are available.
+ */
+ if (sachip->irq != NO_IRQ) {
+ ret = sa1111_setup_irq(sachip, pd->irq_base);
+ if (ret)
+ goto err_unmap;
+ }
+
#ifdef CONFIG_ARCH_SA1100
{
unsigned int val;
@@ -702,30 +789,22 @@ __sa1111_probe(struct device *me, struct resource *mem, int irq)
}
#endif
- /*
- * The interrupt controller must be initialised before any
- * other device to ensure that the interrupts are available.
- */
- if (sachip->irq != NO_IRQ)
- sa1111_setup_irq(sachip);
-
g_sa1111 = sachip;
has_devs = ~0;
- if (machine_is_assabet() || machine_is_jornada720() ||
- machine_is_badge4())
- has_devs &= ~(1 << 4);
- else
- has_devs &= ~(1 << 1);
+ if (pd)
+ has_devs &= ~pd->disable_devs;
for (i = 0; i < ARRAY_SIZE(sa1111_devices); i++)
- if (has_devs & (1 << i))
+ if (sa1111_devices[i].devid & has_devs)
sa1111_init_one_child(sachip, mem, &sa1111_devices[i]);
return 0;
err_unmap:
iounmap(sachip->base);
+ err_clk_unprep:
+ clk_unprepare(sachip->clk);
err_clkput:
clk_put(sachip->clk);
err_free:
@@ -735,7 +814,10 @@ __sa1111_probe(struct device *me, struct resource *mem, int irq)
static int sa1111_remove_one(struct device *dev, void *data)
{
- device_unregister(dev);
+ struct sa1111_dev *sadev = SA1111_DEV(dev);
+ device_del(&sadev->dev);
+ release_resource(&sadev->res);
+ put_device(&sadev->dev);
return 0;
}
@@ -752,10 +834,12 @@ static void __sa1111_remove(struct sa1111 *sachip)
sa1111_writel(0, irqbase + SA1111_WAKEEN1);
clk_disable(sachip->clk);
+ clk_unprepare(sachip->clk);
if (sachip->irq != NO_IRQ) {
- set_irq_chained_handler(sachip->irq, NULL);
- set_irq_data(sachip->irq, NULL);
+ irq_set_chained_handler(sachip->irq, NULL);
+ irq_set_handler_data(sachip->irq, NULL);
+ irq_free_descs(sachip->irq_base, SA1111_IRQ_NR);
release_mem_region(sachip->phys + SA1111_INTC, 512);
}
@@ -765,34 +849,6 @@ static void __sa1111_remove(struct sa1111 *sachip)
kfree(sachip);
}
-/*
- * According to the "Intel StrongARM SA-1111 Microprocessor Companion
- * Chip Specification Update" (June 2000), erratum #7, there is a
- * significant bug in the SA1111 SDRAM shared memory controller. If
- * an access to a region of memory above 1MB relative to the bank base,
- * it is important that address bit 10 _NOT_ be asserted. Depending
- * on the configuration of the RAM, bit 10 may correspond to one
- * of several different (processor-relative) address bits.
- *
- * This routine only identifies whether or not a given DMA address
- * is susceptible to the bug.
- *
- * This should only get called for sa1111_device types due to the
- * way we configure our device dma_masks.
- */
-int dma_needs_bounce(struct device *dev, dma_addr_t addr, size_t size)
-{
- /*
- * Section 4.6 of the "Intel StrongARM SA-1111 Development Module
- * User's Guide" mentions that jumpers R51 and R52 control the
- * target of SA-1111 DMA (either SDRAM bank 0 on Assabet, or
- * SDRAM bank 1 on Neponset). The default configuration selects
- * Assabet, so any address in bank 1 is necessarily invalid.
- */
- return ((machine_is_assabet() || machine_is_pfs168()) &&
- (addr >= 0xc8000000 || (addr + size) >= 0xc8000000));
-}
-
struct sa1111_save_data {
unsigned int skcr;
unsigned int skpcr;
@@ -842,6 +898,9 @@ static int sa1111_suspend(struct platform_device *dev, pm_message_t state)
save->skpwm0 = sa1111_readl(base + SA1111_SKPWM0);
save->skpwm1 = sa1111_readl(base + SA1111_SKPWM1);
+ sa1111_writel(0, sachip->base + SA1111_SKPWM0);
+ sa1111_writel(0, sachip->base + SA1111_SKPWM1);
+
base = sachip->base + SA1111_INTC;
save->intpol0 = sa1111_readl(base + SA1111_INTPOL0);
save->intpol1 = sa1111_readl(base + SA1111_INTPOL1);
@@ -857,13 +916,15 @@ static int sa1111_suspend(struct platform_device *dev, pm_message_t state)
*/
val = sa1111_readl(sachip->base + SA1111_SKCR);
sa1111_writel(val | SKCR_SLEEP, sachip->base + SA1111_SKCR);
- sa1111_writel(0, sachip->base + SA1111_SKPWM0);
- sa1111_writel(0, sachip->base + SA1111_SKPWM1);
clk_disable(sachip->clk);
spin_unlock_irqrestore(&sachip->lock, flags);
+#ifdef CONFIG_ARCH_SA1100
+ sa1110_mb_disable();
+#endif
+
return 0;
}
@@ -887,8 +948,6 @@ static int sa1111_resume(struct platform_device *dev)
if (!save)
return 0;
- spin_lock_irqsave(&sachip->lock, flags);
-
/*
* Ensure that the SA1111 is still here.
* FIXME: shouldn't do this here.
@@ -905,6 +964,18 @@ static int sa1111_resume(struct platform_device *dev)
* First of all, wake up the chip.
*/
sa1111_wake(sachip);
+
+#ifdef CONFIG_ARCH_SA1100
+ /* Enable the memory bus request/grant signals */
+ sa1110_mb_enable();
+#endif
+
+ /*
+ * Only lock for write ops. Also, sa1111_wake must be called with
+ * released spinlock!
+ */
+ spin_lock_irqsave(&sachip->lock, flags);
+
sa1111_writel(0, sachip->base + SA1111_INTC + SA1111_INTEN0);
sa1111_writel(0, sachip->base + SA1111_INTC + SA1111_INTEN1);
@@ -939,7 +1010,7 @@ static int sa1111_resume(struct platform_device *dev)
#define sa1111_resume NULL
#endif
-static int __devinit sa1111_probe(struct platform_device *pdev)
+static int sa1111_probe(struct platform_device *pdev)
{
struct resource *mem;
int irq;
@@ -959,13 +1030,12 @@ static int sa1111_remove(struct platform_device *pdev)
struct sa1111 *sachip = platform_get_drvdata(pdev);
if (sachip) {
- __sa1111_remove(sachip);
- platform_set_drvdata(pdev, NULL);
-
#ifdef CONFIG_PM
kfree(sachip->saved_state);
sachip->saved_state = NULL;
#endif
+ __sa1111_remove(sachip);
+ platform_set_drvdata(pdev, NULL);
}
return 0;
@@ -987,6 +1057,7 @@ static struct platform_driver sa1111_device_driver = {
.resume = sa1111_resume,
.driver = {
.name = "sa1111",
+ .owner = THIS_MODULE,
},
};
@@ -1172,16 +1243,23 @@ EXPORT_SYMBOL(sa1111_set_sleep_io);
* sa1111_enable_device - enable an on-chip SA1111 function block
* @sadev: SA1111 function block device to enable
*/
-void sa1111_enable_device(struct sa1111_dev *sadev)
+int sa1111_enable_device(struct sa1111_dev *sadev)
{
struct sa1111 *sachip = sa1111_chip_driver(sadev);
unsigned long flags;
unsigned int val;
+ int ret = 0;
- spin_lock_irqsave(&sachip->lock, flags);
- val = sa1111_readl(sachip->base + SA1111_SKPCR);
- sa1111_writel(val | sadev->skpcr_mask, sachip->base + SA1111_SKPCR);
- spin_unlock_irqrestore(&sachip->lock, flags);
+ if (sachip->pdata && sachip->pdata->enable)
+ ret = sachip->pdata->enable(sachip->pdata->data, sadev->devid);
+
+ if (ret == 0) {
+ spin_lock_irqsave(&sachip->lock, flags);
+ val = sa1111_readl(sachip->base + SA1111_SKPCR);
+ sa1111_writel(val | sadev->skpcr_mask, sachip->base + SA1111_SKPCR);
+ spin_unlock_irqrestore(&sachip->lock, flags);
+ }
+ return ret;
}
EXPORT_SYMBOL(sa1111_enable_device);
@@ -1199,6 +1277,9 @@ void sa1111_disable_device(struct sa1111_dev *sadev)
val = sa1111_readl(sachip->base + SA1111_SKPCR);
sa1111_writel(val & ~sadev->skpcr_mask, sachip->base + SA1111_SKPCR);
spin_unlock_irqrestore(&sachip->lock, flags);
+
+ if (sachip->pdata && sachip->pdata->disable)
+ sachip->pdata->disable(sachip->pdata->data, sadev->devid);
}
EXPORT_SYMBOL(sa1111_disable_device);
@@ -1213,7 +1294,7 @@ static int sa1111_match(struct device *_dev, struct device_driver *_drv)
struct sa1111_dev *dev = SA1111_DEV(_dev);
struct sa1111_driver *drv = SA1111_DRV(_drv);
- return dev->devid == drv->devid;
+ return dev->devid & drv->devid;
}
static int sa1111_bus_suspend(struct device *dev, pm_message_t state)
@@ -1238,6 +1319,14 @@ static int sa1111_bus_resume(struct device *dev)
return ret;
}
+static void sa1111_bus_shutdown(struct device *dev)
+{
+ struct sa1111_driver *drv = SA1111_DRV(dev->driver);
+
+ if (drv && drv->shutdown)
+ drv->shutdown(SA1111_DEV(dev));
+}
+
static int sa1111_bus_probe(struct device *dev)
{
struct sa1111_dev *sadev = SA1111_DEV(dev);
@@ -1267,6 +1356,7 @@ struct bus_type sa1111_bus_type = {
.remove = sa1111_bus_remove,
.suspend = sa1111_bus_suspend,
.resume = sa1111_bus_resume,
+ .shutdown = sa1111_bus_shutdown,
};
EXPORT_SYMBOL(sa1111_bus_type);
@@ -1283,9 +1373,70 @@ void sa1111_driver_unregister(struct sa1111_driver *driver)
}
EXPORT_SYMBOL(sa1111_driver_unregister);
+#ifdef CONFIG_DMABOUNCE
+/*
+ * According to the "Intel StrongARM SA-1111 Microprocessor Companion
+ * Chip Specification Update" (June 2000), erratum #7, there is a
+ * significant bug in the SA1111 SDRAM shared memory controller. If
+ * an access to a region of memory above 1MB relative to the bank base,
+ * it is important that address bit 10 _NOT_ be asserted. Depending
+ * on the configuration of the RAM, bit 10 may correspond to one
+ * of several different (processor-relative) address bits.
+ *
+ * This routine only identifies whether or not a given DMA address
+ * is susceptible to the bug.
+ *
+ * This should only get called for sa1111_device types due to the
+ * way we configure our device dma_masks.
+ */
+static int sa1111_needs_bounce(struct device *dev, dma_addr_t addr, size_t size)
+{
+ /*
+ * Section 4.6 of the "Intel StrongARM SA-1111 Development Module
+ * User's Guide" mentions that jumpers R51 and R52 control the
+ * target of SA-1111 DMA (either SDRAM bank 0 on Assabet, or
+ * SDRAM bank 1 on Neponset). The default configuration selects
+ * Assabet, so any address in bank 1 is necessarily invalid.
+ */
+ return (machine_is_assabet() || machine_is_pfs168()) &&
+ (addr >= 0xc8000000 || (addr + size) >= 0xc8000000);
+}
+
+static int sa1111_notifier_call(struct notifier_block *n, unsigned long action,
+ void *data)
+{
+ struct sa1111_dev *dev = SA1111_DEV(data);
+
+ switch (action) {
+ case BUS_NOTIFY_ADD_DEVICE:
+ if (dev->dev.dma_mask && dev->dma_mask < 0xffffffffUL) {
+ int ret = dmabounce_register_dev(&dev->dev, 1024, 4096,
+ sa1111_needs_bounce);
+ if (ret)
+ dev_err(&dev->dev, "failed to register with dmabounce: %d\n", ret);
+ }
+ break;
+
+ case BUS_NOTIFY_DEL_DEVICE:
+ if (dev->dev.dma_mask && dev->dma_mask < 0xffffffffUL)
+ dmabounce_unregister_dev(&dev->dev);
+ break;
+ }
+ return NOTIFY_OK;
+}
+
+static struct notifier_block sa1111_bus_notifier = {
+ .notifier_call = sa1111_notifier_call,
+};
+#endif
+
static int __init sa1111_init(void)
{
int ret = bus_register(&sa1111_bus_type);
+#ifdef CONFIG_DMABOUNCE
+ if (ret == 0)
+ bus_register_notifier(&sa1111_bus_type, &sa1111_bus_notifier);
+#endif
if (ret == 0)
platform_driver_register(&sa1111_device_driver);
return ret;
@@ -1294,6 +1445,9 @@ static int __init sa1111_init(void)
static void __exit sa1111_exit(void)
{
platform_driver_unregister(&sa1111_device_driver);
+#ifdef CONFIG_DMABOUNCE
+ bus_unregister_notifier(&sa1111_bus_type, &sa1111_bus_notifier);
+#endif
bus_unregister(&sa1111_bus_type);
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 16:27:10 +0000