#include <linux/errno.h>
#include <linux/ioport.h>
#include <linux/serial_core.h>
+#include <linux/mfd/ucb1x00.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/delay.h>
EXPORT_SYMBOL(ASSABET_BCR_frob);
+static void assabet_ucb1x00_reset(enum ucb1x00_reset state)
+{
+ if (state == UCB_RST_PROBE)
+ ASSABET_BCR_set(ASSABET_BCR_CODEC_RST);
+}
+
/*
* Assabet flash support code.
.set_speed = assabet_irda_set_speed,
};
+static struct ucb1x00_plat_data assabet_ucb1x00_data = {
+ .reset = assabet_ucb1x00_reset,
+ .gpio_base = -1,
+};
+
static struct mcp_plat_data assabet_mcp_data = {
.mccr0 = MCCR0_ADM,
.sclk_rate = 11981000,
+ .codec_pdata = &assabet_ucb1x00_data,
};
static void assabet_lcd_set_visual(u32 visual)
PPDR |= PPC_TXD3 | PPC_TXD1;
PPSR |= PPC_TXD3 | PPC_TXD1;
+ sa11x0_ppc_configure_mcp();
+
if (machine_has_neponset()) {
/*
* Angel sets this, but other bootloaders may not.
static void __init cerf_init(void)
{
+ sa11x0_ppc_configure_mcp();
platform_add_devices(cerf_devices, ARRAY_SIZE(cerf_devices));
sa11x0_register_mtd(&cerf_flash_data, &cerf_flash_resource, 1);
sa11x0_register_mcp(&cerf_mcp_data);
#include <linux/tty.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
+#include <linux/mfd/ucb1x00.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/timer.h>
.num_devs = 1,
};
+static struct ucb1x00_plat_data collie_ucb1x00_data = {
+ .gpio_base = COLLIE_TC35143_GPIO_BASE,
+};
+
static struct mcp_plat_data collie_mcp_data = {
.mccr0 = MCCR0_ADM | MCCR0_ExtClk,
.sclk_rate = 9216000,
- .gpio_base = COLLIE_TC35143_GPIO_BASE,
+ .codec_pdata = &collie_ucb1x00_data,
};
/*
collie_power_resource[0].start = gpio_to_irq(COLLIE_GPIO_AC_IN);
collie_power_resource[0].end = gpio_to_irq(COLLIE_GPIO_AC_IN);
+
+ sa11x0_ppc_configure_mcp();
+
+
platform_scoop_config = &collie_pcmcia_config;
ret = platform_add_devices(devices, ARRAY_SIZE(devices));
static struct resource sa11x0mcp_resources[] = {
[0] = DEFINE_RES_MEM(__PREG(Ser4MCCR0), SZ_64K),
- [1] = DEFINE_RES_IRQ(IRQ_Ser4MCP),
+ [1] = DEFINE_RES_MEM(__PREG(Ser4MCCR1), 4),
+ [2] = DEFINE_RES_IRQ(IRQ_Ser4MCP),
};
static u64 sa11x0mcp_dma_mask = 0xffffffffUL;
.resource = sa11x0mcp_resources,
};
+void __init sa11x0_ppc_configure_mcp(void)
+{
+ /* Setup the PPC unit for the MCP */
+ PPDR &= ~PPC_RXD4;
+ PPDR |= PPC_TXD4 | PPC_SCLK | PPC_SFRM;
+ PSDR |= PPC_RXD4;
+ PSDR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM);
+ PPSR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM);
+}
+
void sa11x0_register_mcp(struct mcp_plat_data *data)
{
sa11x0_register_device(&sa11x0mcp_device, data);
void sa11x0_register_irda(struct irda_platform_data *irda);
struct mcp_plat_data;
+void sa11x0_ppc_configure_mcp(void);
void sa11x0_register_mcp(struct mcp_plat_data *data);
struct sa1100fb_mach_info;
u32 mccr0;
u32 mccr1;
unsigned int sclk_rate;
- int gpio_base;
+ void *codec_pdata;
};
#endif
if (inf)
sa11x0_register_lcd(inf);
+ sa11x0_ppc_configure_mcp();
sa11x0_register_mcp(&lart_mcp_data);
}
static void __init shannon_init(void)
{
+ sa11x0_ppc_configure_mcp();
sa11x0_register_lcd(&shannon_lcd_info);
sa11x0_register_mtd(&shannon_flash_data, &shannon_flash_resource, 1);
sa11x0_register_mcp(&shannon_mcp_data);
#include <linux/string.h>
#include <linux/pm.h>
#include <linux/platform_device.h>
+#include <linux/mfd/ucb1x00.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/io.h>
DEFINE_RES_MEM(SA1100_CS1_PHYS, SZ_16M),
};
+static struct ucb1x00_plat_data simpad_ucb1x00_data = {
+ .gpio_base = SIMPAD_UCB1X00_GPIO_BASE,
+};
+
static struct mcp_plat_data simpad_mcp_data = {
.mccr0 = MCCR0_ADM,
.sclk_rate = 11981000,
- .gpio_base = SIMPAD_UCB1X00_GPIO_BASE,
+ .codec_pdata = &simpad_ucb1x00_data,
};
pm_power_off = simpad_power_off;
+ sa11x0_ppc_configure_mcp();
sa11x0_register_mtd(&simpad_flash_data, simpad_flash_resources,
ARRAY_SIZE(simpad_flash_resources));
sa11x0_register_mcp(&simpad_mcp_data);
# Chip drivers
config MCP_UCB1200
- tristate "Support for UCB1200 / UCB1300"
- depends on MCP
+ bool "Support for UCB1200 / UCB1300"
+ depends on MCP_SA11X0
+ select MCP
config MCP_UCB1200_TS
tristate "Touchscreen interface support"
#include <linux/string.h>
#include <linux/mfd/mcp.h>
-#include <mach/dma.h>
#include <asm/system.h>
return 0;
}
-static int mcp_bus_suspend(struct device *dev, pm_message_t state)
-{
- struct mcp *mcp = to_mcp(dev);
- int ret = 0;
-
- if (dev->driver) {
- struct mcp_driver *drv = to_mcp_driver(dev->driver);
-
- ret = drv->suspend(mcp, state);
- }
- return ret;
-}
-
-static int mcp_bus_resume(struct device *dev)
-{
- struct mcp *mcp = to_mcp(dev);
- int ret = 0;
-
- if (dev->driver) {
- struct mcp_driver *drv = to_mcp_driver(dev->driver);
-
- ret = drv->resume(mcp);
- }
- return ret;
-}
-
static struct bus_type mcp_bus_type = {
.name = "mcp",
.match = mcp_bus_match,
.probe = mcp_bus_probe,
.remove = mcp_bus_remove,
- .suspend = mcp_bus_suspend,
- .resume = mcp_bus_resume,
};
/**
mcp = kzalloc(sizeof(struct mcp) + size, GFP_KERNEL);
if (mcp) {
spin_lock_init(&mcp->lock);
+ device_initialize(&mcp->attached_device);
mcp->attached_device.parent = parent;
mcp->attached_device.bus = &mcp_bus_type;
mcp->attached_device.dma_mask = parent->dma_mask;
}
EXPORT_SYMBOL(mcp_host_alloc);
-int mcp_host_register(struct mcp *mcp)
+int mcp_host_add(struct mcp *mcp, void *pdata)
{
+ mcp->attached_device.platform_data = pdata;
dev_set_name(&mcp->attached_device, "mcp0");
- return device_register(&mcp->attached_device);
+ return device_add(&mcp->attached_device);
+}
+EXPORT_SYMBOL(mcp_host_add);
+
+void mcp_host_del(struct mcp *mcp)
+{
+ device_del(&mcp->attached_device);
}
-EXPORT_SYMBOL(mcp_host_register);
+EXPORT_SYMBOL(mcp_host_del);
-void mcp_host_unregister(struct mcp *mcp)
+void mcp_host_free(struct mcp *mcp)
{
- device_unregister(&mcp->attached_device);
+ put_device(&mcp->attached_device);
}
-EXPORT_SYMBOL(mcp_host_unregister);
+EXPORT_SYMBOL(mcp_host_free);
int mcp_driver_register(struct mcp_driver *mcpdrv)
{
*/
#include <linux/module.h>
#include <linux/init.h>
+#include <linux/io.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/spinlock.h>
#include <linux/platform_device.h>
+#include <linux/pm.h>
#include <linux/mfd/mcp.h>
-#include <mach/dma.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/system.h>
#include <mach/mcp.h>
-#include <mach/assabet.h>
-
+#define DRIVER_NAME "sa11x0-mcp"
struct mcp_sa11x0 {
- u32 mccr0;
- u32 mccr1;
+ void __iomem *base0;
+ void __iomem *base1;
+ u32 mccr0;
+ u32 mccr1;
};
+/* Register offsets */
+#define MCCR0(m) ((m)->base0 + 0x00)
+#define MCDR0(m) ((m)->base0 + 0x08)
+#define MCDR1(m) ((m)->base0 + 0x0c)
+#define MCDR2(m) ((m)->base0 + 0x10)
+#define MCSR(m) ((m)->base0 + 0x18)
+#define MCCR1(m) ((m)->base1 + 0x00)
+
#define priv(mcp) ((struct mcp_sa11x0 *)mcp_priv(mcp))
static void
mcp_sa11x0_set_telecom_divisor(struct mcp *mcp, unsigned int divisor)
{
- unsigned int mccr0;
+ struct mcp_sa11x0 *m = priv(mcp);
divisor /= 32;
- mccr0 = Ser4MCCR0 & ~0x00007f00;
- mccr0 |= divisor << 8;
- Ser4MCCR0 = mccr0;
+ m->mccr0 &= ~0x00007f00;
+ m->mccr0 |= divisor << 8;
+ writel_relaxed(m->mccr0, MCCR0(m));
}
static void
mcp_sa11x0_set_audio_divisor(struct mcp *mcp, unsigned int divisor)
{
- unsigned int mccr0;
+ struct mcp_sa11x0 *m = priv(mcp);
divisor /= 32;
- mccr0 = Ser4MCCR0 & ~0x0000007f;
- mccr0 |= divisor;
- Ser4MCCR0 = mccr0;
+ m->mccr0 &= ~0x0000007f;
+ m->mccr0 |= divisor;
+ writel_relaxed(m->mccr0, MCCR0(m));
}
/*
static void
mcp_sa11x0_write(struct mcp *mcp, unsigned int reg, unsigned int val)
{
+ struct mcp_sa11x0 *m = priv(mcp);
int ret = -ETIME;
int i;
- Ser4MCDR2 = reg << 17 | MCDR2_Wr | (val & 0xffff);
+ writel_relaxed(reg << 17 | MCDR2_Wr | (val & 0xffff), MCDR2(m));
for (i = 0; i < 2; i++) {
udelay(mcp->rw_timeout);
- if (Ser4MCSR & MCSR_CWC) {
+ if (readl_relaxed(MCSR(m)) & MCSR_CWC) {
ret = 0;
break;
}
static unsigned int
mcp_sa11x0_read(struct mcp *mcp, unsigned int reg)
{
+ struct mcp_sa11x0 *m = priv(mcp);
int ret = -ETIME;
int i;
- Ser4MCDR2 = reg << 17 | MCDR2_Rd;
+ writel_relaxed(reg << 17 | MCDR2_Rd, MCDR2(m));
for (i = 0; i < 2; i++) {
udelay(mcp->rw_timeout);
- if (Ser4MCSR & MCSR_CRC) {
- ret = Ser4MCDR2 & 0xffff;
+ if (readl_relaxed(MCSR(m)) & MCSR_CRC) {
+ ret = readl_relaxed(MCDR2(m)) & 0xffff;
break;
}
}
static void mcp_sa11x0_enable(struct mcp *mcp)
{
- Ser4MCSR = -1;
- Ser4MCCR0 |= MCCR0_MCE;
+ struct mcp_sa11x0 *m = priv(mcp);
+
+ writel(-1, MCSR(m));
+ m->mccr0 |= MCCR0_MCE;
+ writel_relaxed(m->mccr0, MCCR0(m));
}
static void mcp_sa11x0_disable(struct mcp *mcp)
{
- Ser4MCCR0 &= ~MCCR0_MCE;
+ struct mcp_sa11x0 *m = priv(mcp);
+
+ m->mccr0 &= ~MCCR0_MCE;
+ writel_relaxed(m->mccr0, MCCR0(m));
}
/*
.disable = mcp_sa11x0_disable,
};
-static int mcp_sa11x0_probe(struct platform_device *pdev)
+static int mcp_sa11x0_probe(struct platform_device *dev)
{
- struct mcp_plat_data *data = pdev->dev.platform_data;
+ struct mcp_plat_data *data = dev->dev.platform_data;
+ struct resource *mem0, *mem1;
+ struct mcp_sa11x0 *m;
struct mcp *mcp;
int ret;
if (!data)
return -ENODEV;
- if (!request_mem_region(0x80060000, 0x60, "sa11x0-mcp"))
- return -EBUSY;
+ mem0 = platform_get_resource(dev, IORESOURCE_MEM, 0);
+ mem1 = platform_get_resource(dev, IORESOURCE_MEM, 1);
+ if (!mem0 || !mem1)
+ return -ENXIO;
+
+ if (!request_mem_region(mem0->start, resource_size(mem0),
+ DRIVER_NAME)) {
+ ret = -EBUSY;
+ goto err_mem0;
+ }
- mcp = mcp_host_alloc(&pdev->dev, sizeof(struct mcp_sa11x0));
+ if (!request_mem_region(mem1->start, resource_size(mem1),
+ DRIVER_NAME)) {
+ ret = -EBUSY;
+ goto err_mem1;
+ }
+
+ mcp = mcp_host_alloc(&dev->dev, sizeof(struct mcp_sa11x0));
if (!mcp) {
ret = -ENOMEM;
- goto release;
+ goto err_alloc;
}
mcp->owner = THIS_MODULE;
mcp->ops = &mcp_sa11x0;
mcp->sclk_rate = data->sclk_rate;
- mcp->dma_audio_rd = DMA_Ser4MCP0Rd;
- mcp->dma_audio_wr = DMA_Ser4MCP0Wr;
- mcp->dma_telco_rd = DMA_Ser4MCP1Rd;
- mcp->dma_telco_wr = DMA_Ser4MCP1Wr;
- mcp->gpio_base = data->gpio_base;
- platform_set_drvdata(pdev, mcp);
+ m = priv(mcp);
+ m->mccr0 = data->mccr0 | 0x7f7f;
+ m->mccr1 = data->mccr1;
- if (machine_is_assabet()) {
- ASSABET_BCR_set(ASSABET_BCR_CODEC_RST);
+ m->base0 = ioremap(mem0->start, resource_size(mem0));
+ m->base1 = ioremap(mem1->start, resource_size(mem1));
+ if (!m->base0 || !m->base1) {
+ ret = -ENOMEM;
+ goto err_ioremap;
}
- /*
- * Setup the PPC unit correctly.
- */
- PPDR &= ~PPC_RXD4;
- PPDR |= PPC_TXD4 | PPC_SCLK | PPC_SFRM;
- PSDR |= PPC_RXD4;
- PSDR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM);
- PPSR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM);
+ platform_set_drvdata(dev, mcp);
/*
* Initialise device. Note that we initially
* set the sampling rate to minimum.
*/
- Ser4MCSR = -1;
- Ser4MCCR1 = data->mccr1;
- Ser4MCCR0 = data->mccr0 | 0x7f7f;
+ writel_relaxed(-1, MCSR(m));
+ writel_relaxed(m->mccr1, MCCR1(m));
+ writel_relaxed(m->mccr0, MCCR0(m));
/*
* Calculate the read/write timeout (us) from the bit clock
mcp->rw_timeout = (64 * 3 * 1000000 + mcp->sclk_rate - 1) /
mcp->sclk_rate;
- ret = mcp_host_register(mcp);
+ ret = mcp_host_add(mcp, data->codec_pdata);
if (ret == 0)
- goto out;
+ return 0;
- release:
- release_mem_region(0x80060000, 0x60);
- platform_set_drvdata(pdev, NULL);
+ platform_set_drvdata(dev, NULL);
- out:
+ err_ioremap:
+ iounmap(m->base1);
+ iounmap(m->base0);
+ mcp_host_free(mcp);
+ err_alloc:
+ release_mem_region(mem1->start, resource_size(mem1));
+ err_mem1:
+ release_mem_region(mem0->start, resource_size(mem0));
+ err_mem0:
return ret;
}
static int mcp_sa11x0_remove(struct platform_device *dev)
{
struct mcp *mcp = platform_get_drvdata(dev);
+ struct mcp_sa11x0 *m = priv(mcp);
+ struct resource *mem0, *mem1;
+
+ if (m->mccr0 & MCCR0_MCE)
+ dev_warn(&dev->dev,
+ "device left active (missing disable call?)\n");
+
+ mem0 = platform_get_resource(dev, IORESOURCE_MEM, 0);
+ mem1 = platform_get_resource(dev, IORESOURCE_MEM, 1);
platform_set_drvdata(dev, NULL);
- mcp_host_unregister(mcp);
- release_mem_region(0x80060000, 0x60);
+ mcp_host_del(mcp);
+ iounmap(m->base1);
+ iounmap(m->base0);
+ mcp_host_free(mcp);
+ release_mem_region(mem1->start, resource_size(mem1));
+ release_mem_region(mem0->start, resource_size(mem0));
return 0;
}
-static int mcp_sa11x0_suspend(struct platform_device *dev, pm_message_t state)
+#ifdef CONFIG_PM_SLEEP
+static int mcp_sa11x0_suspend(struct device *dev)
{
- struct mcp *mcp = platform_get_drvdata(dev);
+ struct mcp_sa11x0 *m = priv(dev_get_drvdata(dev));
+
+ if (m->mccr0 & MCCR0_MCE)
+ dev_warn(dev, "device left active (missing disable call?)\n");
- priv(mcp)->mccr0 = Ser4MCCR0;
- priv(mcp)->mccr1 = Ser4MCCR1;
- Ser4MCCR0 &= ~MCCR0_MCE;
+ writel(m->mccr0 & ~MCCR0_MCE, MCCR0(m));
return 0;
}
-static int mcp_sa11x0_resume(struct platform_device *dev)
+static int mcp_sa11x0_resume(struct device *dev)
{
- struct mcp *mcp = platform_get_drvdata(dev);
+ struct mcp_sa11x0 *m = priv(dev_get_drvdata(dev));
- Ser4MCCR1 = priv(mcp)->mccr1;
- Ser4MCCR0 = priv(mcp)->mccr0;
+ writel_relaxed(m->mccr1, MCCR1(m));
+ writel_relaxed(m->mccr0, MCCR0(m));
return 0;
}
-
-/*
- * The driver for the SA11x0 MCP port.
- */
-MODULE_ALIAS("platform:sa11x0-mcp");
+#endif
+
+static const struct dev_pm_ops mcp_sa11x0_pm_ops = {
+#ifdef CONFIG_PM_SLEEP
+ .suspend = mcp_sa11x0_suspend,
+ .freeze = mcp_sa11x0_suspend,
+ .poweroff = mcp_sa11x0_suspend,
+ .resume_noirq = mcp_sa11x0_resume,
+ .thaw_noirq = mcp_sa11x0_resume,
+ .restore_noirq = mcp_sa11x0_resume,
+#endif
+};
static struct platform_driver mcp_sa11x0_driver = {
.probe = mcp_sa11x0_probe,
.remove = mcp_sa11x0_remove,
- .suspend = mcp_sa11x0_suspend,
- .resume = mcp_sa11x0_resume,
.driver = {
- .name = "sa11x0-mcp",
+ .name = DRIVER_NAME,
+ .owner = THIS_MODULE,
+ .pm = &mcp_sa11x0_pm_ops,
},
};
*/
module_platform_driver(mcp_sa11x0_driver);
+MODULE_ALIAS("platform:" DRIVER_NAME);
MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>");
MODULE_DESCRIPTION("SA11x0 multimedia communications port driver");
MODULE_LICENSE("GPL");
*/
#include <linux/module.h>
#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/err.h>
#include <linux/fs.h>
+#include <linux/gpio_keys.h>
+#include <linux/input.h>
+#include <linux/platform_device.h>
#include <linux/proc_fs.h>
-#include <linux/device.h>
#include <linux/mfd/ucb1x00.h>
-#include <mach/dma.h>
-
-
#define UCB1X00_ATTR(name,input)\
static ssize_t name##_show(struct device *dev, struct device_attribute *attr, \
char *buf) \
static int ucb1x00_assabet_add(struct ucb1x00_dev *dev)
{
- device_create_file(&dev->ucb->dev, &dev_attr_vbatt);
- device_create_file(&dev->ucb->dev, &dev_attr_vcharger);
- device_create_file(&dev->ucb->dev, &dev_attr_batt_temp);
+ struct ucb1x00 *ucb = dev->ucb;
+ struct platform_device *pdev;
+ struct gpio_keys_platform_data keys;
+ static struct gpio_keys_button buttons[6];
+ unsigned i;
+
+ memset(buttons, 0, sizeof(buttons));
+ memset(&keys, 0, sizeof(keys));
+
+ for (i = 0; i < ARRAY_SIZE(buttons); i++) {
+ buttons[i].code = BTN_0 + i;
+ buttons[i].gpio = ucb->gpio.base + i;
+ buttons[i].type = EV_KEY;
+ buttons[i].can_disable = true;
+ }
+
+ keys.buttons = buttons;
+ keys.nbuttons = ARRAY_SIZE(buttons);
+ keys.poll_interval = 50;
+ keys.name = "ucb1x00";
+
+ pdev = platform_device_register_data(&ucb->dev, "gpio-keys", -1,
+ &keys, sizeof(keys));
+
+ device_create_file(&ucb->dev, &dev_attr_vbatt);
+ device_create_file(&ucb->dev, &dev_attr_vcharger);
+ device_create_file(&ucb->dev, &dev_attr_batt_temp);
+
+ dev->priv = pdev;
return 0;
}
static void ucb1x00_assabet_remove(struct ucb1x00_dev *dev)
{
+ struct platform_device *pdev = dev->priv;
+
+ if (!IS_ERR(pdev))
+ platform_device_unregister(pdev);
+
device_remove_file(&dev->ucb->dev, &dev_attr_batt_temp);
device_remove_file(&dev->ucb->dev, &dev_attr_vcharger);
device_remove_file(&dev->ucb->dev, &dev_attr_vbatt);
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/interrupt.h>
+#include <linux/irq.h>
#include <linux/device.h>
#include <linux/mutex.h>
#include <linux/mfd/ucb1x00.h>
+#include <linux/pm.h>
#include <linux/gpio.h>
-#include <linux/semaphore.h>
-
-#include <mach/dma.h>
-#include <mach/hardware.h>
static DEFINE_MUTEX(ucb1x00_mutex);
static LIST_HEAD(ucb1x00_drivers);
* ucb1x00_enable must have been called to enable the comms
* before using this function.
*
- * This function does not take any semaphores or spinlocks.
+ * This function does not take any mutexes or spinlocks.
*/
unsigned int ucb1x00_io_read(struct ucb1x00 *ucb)
{
else
ucb->io_out &= ~(1 << offset);
+ ucb1x00_enable(ucb);
ucb1x00_reg_write(ucb, UCB_IO_DATA, ucb->io_out);
+ ucb1x00_disable(ucb);
spin_unlock_irqrestore(&ucb->io_lock, flags);
}
static int ucb1x00_gpio_get(struct gpio_chip *chip, unsigned offset)
{
struct ucb1x00 *ucb = container_of(chip, struct ucb1x00, gpio);
- return ucb1x00_reg_read(ucb, UCB_IO_DATA) & (1 << offset);
+ unsigned val;
+
+ ucb1x00_enable(ucb);
+ val = ucb1x00_reg_read(ucb, UCB_IO_DATA);
+ ucb1x00_disable(ucb);
+
+ return val & (1 << offset);
}
static int ucb1x00_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
spin_lock_irqsave(&ucb->io_lock, flags);
ucb->io_dir &= ~(1 << offset);
+ ucb1x00_enable(ucb);
ucb1x00_reg_write(ucb, UCB_IO_DIR, ucb->io_dir);
+ ucb1x00_disable(ucb);
spin_unlock_irqrestore(&ucb->io_lock, flags);
return 0;
else
ucb->io_out &= ~mask;
+ ucb1x00_enable(ucb);
if (old != ucb->io_out)
ucb1x00_reg_write(ucb, UCB_IO_DATA, ucb->io_out);
ucb->io_dir |= mask;
ucb1x00_reg_write(ucb, UCB_IO_DIR, ucb->io_dir);
}
+ ucb1x00_disable(ucb);
spin_unlock_irqrestore(&ucb->io_lock, flags);
return 0;
}
+static int ucb1x00_to_irq(struct gpio_chip *chip, unsigned offset)
+{
+ struct ucb1x00 *ucb = container_of(chip, struct ucb1x00, gpio);
+
+ return ucb->irq_base > 0 ? ucb->irq_base + offset : -ENXIO;
+}
+
/*
* UCB1300 data sheet says we must:
* 1. enable ADC => 5us (including reference startup time)
* Any code wishing to use the ADC converter must call this
* function prior to using it.
*
- * This function takes the ADC semaphore to prevent two or more
+ * This function takes the ADC mutex to prevent two or more
* concurrent uses, and therefore may sleep. As a result, it
* can only be called from process context, not interrupt
* context.
*/
void ucb1x00_adc_enable(struct ucb1x00 *ucb)
{
- down(&ucb->adc_sem);
+ mutex_lock(&ucb->adc_mutex);
ucb->adc_cr |= UCB_ADC_ENA;
* complete (2 frames max without sync).
*
* If called for a synchronised ADC conversion, it may sleep
- * with the ADC semaphore held.
+ * with the ADC mutex held.
*/
unsigned int ucb1x00_adc_read(struct ucb1x00 *ucb, int adc_channel, int sync)
{
* ucb1x00_adc_disable - disable the ADC converter
* @ucb: UCB1x00 structure describing chip
*
- * Disable the ADC converter and release the ADC semaphore.
+ * Disable the ADC converter and release the ADC mutex.
*/
void ucb1x00_adc_disable(struct ucb1x00 *ucb)
{
ucb1x00_reg_write(ucb, UCB_ADC_CR, ucb->adc_cr);
ucb1x00_disable(ucb);
- up(&ucb->adc_sem);
+ mutex_unlock(&ucb->adc_mutex);
}
/*
* SIBCLK to talk to the chip. We leave the clock running until
* we have finished processing all interrupts from the chip.
*/
-static irqreturn_t ucb1x00_irq(int irqnr, void *devid)
+static void ucb1x00_irq(unsigned int irq, struct irq_desc *desc)
{
- struct ucb1x00 *ucb = devid;
- struct ucb1x00_irq *irq;
+ struct ucb1x00 *ucb = irq_desc_get_handler_data(desc);
unsigned int isr, i;
ucb1x00_enable(ucb);
ucb1x00_reg_write(ucb, UCB_IE_CLEAR, isr);
ucb1x00_reg_write(ucb, UCB_IE_CLEAR, 0);
- for (i = 0, irq = ucb->irq_handler; i < 16 && isr; i++, isr >>= 1, irq++)
- if (isr & 1 && irq->fn)
- irq->fn(i, irq->devid);
+ for (i = 0; i < 16 && isr; i++, isr >>= 1, irq++)
+ if (isr & 1)
+ generic_handle_irq(ucb->irq_base + i);
ucb1x00_disable(ucb);
-
- return IRQ_HANDLED;
}
-/**
- * ucb1x00_hook_irq - hook a UCB1x00 interrupt
- * @ucb: UCB1x00 structure describing chip
- * @idx: interrupt index
- * @fn: function to call when interrupt is triggered
- * @devid: device id to pass to interrupt handler
- *
- * Hook the specified interrupt. You can only register one handler
- * for each interrupt source. The interrupt source is not enabled
- * by this function; use ucb1x00_enable_irq instead.
- *
- * Interrupt handlers will be called with other interrupts enabled.
- *
- * Returns zero on success, or one of the following errors:
- * -EINVAL if the interrupt index is invalid
- * -EBUSY if the interrupt has already been hooked
- */
-int ucb1x00_hook_irq(struct ucb1x00 *ucb, unsigned int idx, void (*fn)(int, void *), void *devid)
+static void ucb1x00_irq_update(struct ucb1x00 *ucb, unsigned mask)
{
- struct ucb1x00_irq *irq;
- int ret = -EINVAL;
-
- if (idx < 16) {
- irq = ucb->irq_handler + idx;
- ret = -EBUSY;
-
- spin_lock_irq(&ucb->lock);
- if (irq->fn == NULL) {
- irq->devid = devid;
- irq->fn = fn;
- ret = 0;
- }
- spin_unlock_irq(&ucb->lock);
- }
- return ret;
+ ucb1x00_enable(ucb);
+ if (ucb->irq_ris_enbl & mask)
+ ucb1x00_reg_write(ucb, UCB_IE_RIS, ucb->irq_ris_enbl &
+ ucb->irq_mask);
+ if (ucb->irq_fal_enbl & mask)
+ ucb1x00_reg_write(ucb, UCB_IE_FAL, ucb->irq_fal_enbl &
+ ucb->irq_mask);
+ ucb1x00_disable(ucb);
}
-/**
- * ucb1x00_enable_irq - enable an UCB1x00 interrupt source
- * @ucb: UCB1x00 structure describing chip
- * @idx: interrupt index
- * @edges: interrupt edges to enable
- *
- * Enable the specified interrupt to trigger on %UCB_RISING,
- * %UCB_FALLING or both edges. The interrupt should have been
- * hooked by ucb1x00_hook_irq.
- */
-void ucb1x00_enable_irq(struct ucb1x00 *ucb, unsigned int idx, int edges)
+static void ucb1x00_irq_noop(struct irq_data *data)
{
- unsigned long flags;
+}
- if (idx < 16) {
- spin_lock_irqsave(&ucb->lock, flags);
+static void ucb1x00_irq_mask(struct irq_data *data)
+{
+ struct ucb1x00 *ucb = irq_data_get_irq_chip_data(data);
+ unsigned mask = 1 << (data->irq - ucb->irq_base);
- ucb1x00_enable(ucb);
- if (edges & UCB_RISING) {
- ucb->irq_ris_enbl |= 1 << idx;
- ucb1x00_reg_write(ucb, UCB_IE_RIS, ucb->irq_ris_enbl);
- }
- if (edges & UCB_FALLING) {
- ucb->irq_fal_enbl |= 1 << idx;
- ucb1x00_reg_write(ucb, UCB_IE_FAL, ucb->irq_fal_enbl);
- }
- ucb1x00_disable(ucb);
- spin_unlock_irqrestore(&ucb->lock, flags);
- }
+ raw_spin_lock(&ucb->irq_lock);
+ ucb->irq_mask &= ~mask;
+ ucb1x00_irq_update(ucb, mask);
+ raw_spin_unlock(&ucb->irq_lock);
}
-/**
- * ucb1x00_disable_irq - disable an UCB1x00 interrupt source
- * @ucb: UCB1x00 structure describing chip
- * @edges: interrupt edges to disable
- *
- * Disable the specified interrupt triggering on the specified
- * (%UCB_RISING, %UCB_FALLING or both) edges.
- */
-void ucb1x00_disable_irq(struct ucb1x00 *ucb, unsigned int idx, int edges)
+static void ucb1x00_irq_unmask(struct irq_data *data)
{
- unsigned long flags;
+ struct ucb1x00 *ucb = irq_data_get_irq_chip_data(data);
+ unsigned mask = 1 << (data->irq - ucb->irq_base);
- if (idx < 16) {
- spin_lock_irqsave(&ucb->lock, flags);
-
- ucb1x00_enable(ucb);
- if (edges & UCB_RISING) {
- ucb->irq_ris_enbl &= ~(1 << idx);
- ucb1x00_reg_write(ucb, UCB_IE_RIS, ucb->irq_ris_enbl);
- }
- if (edges & UCB_FALLING) {
- ucb->irq_fal_enbl &= ~(1 << idx);
- ucb1x00_reg_write(ucb, UCB_IE_FAL, ucb->irq_fal_enbl);
- }
- ucb1x00_disable(ucb);
- spin_unlock_irqrestore(&ucb->lock, flags);
- }
+ raw_spin_lock(&ucb->irq_lock);
+ ucb->irq_mask |= mask;
+ ucb1x00_irq_update(ucb, mask);
+ raw_spin_unlock(&ucb->irq_lock);
}
-/**
- * ucb1x00_free_irq - disable and free the specified UCB1x00 interrupt
- * @ucb: UCB1x00 structure describing chip
- * @idx: interrupt index
- * @devid: device id.
- *
- * Disable the interrupt source and remove the handler. devid must
- * match the devid passed when hooking the interrupt.
- *
- * Returns zero on success, or one of the following errors:
- * -EINVAL if the interrupt index is invalid
- * -ENOENT if devid does not match
- */
-int ucb1x00_free_irq(struct ucb1x00 *ucb, unsigned int idx, void *devid)
+static int ucb1x00_irq_set_type(struct irq_data *data, unsigned int type)
{
- struct ucb1x00_irq *irq;
- int ret;
+ struct ucb1x00 *ucb = irq_data_get_irq_chip_data(data);
+ unsigned mask = 1 << (data->irq - ucb->irq_base);
- if (idx >= 16)
- goto bad;
+ raw_spin_lock(&ucb->irq_lock);
+ if (type & IRQ_TYPE_EDGE_RISING)
+ ucb->irq_ris_enbl |= mask;
+ else
+ ucb->irq_ris_enbl &= ~mask;
- irq = ucb->irq_handler + idx;
- ret = -ENOENT;
+ if (type & IRQ_TYPE_EDGE_FALLING)
+ ucb->irq_fal_enbl |= mask;
+ else
+ ucb->irq_fal_enbl &= ~mask;
+ if (ucb->irq_mask & mask) {
+ ucb1x00_reg_write(ucb, UCB_IE_RIS, ucb->irq_ris_enbl &
+ ucb->irq_mask);
+ ucb1x00_reg_write(ucb, UCB_IE_FAL, ucb->irq_fal_enbl &
+ ucb->irq_mask);
+ }
+ raw_spin_unlock(&ucb->irq_lock);
- spin_lock_irq(&ucb->lock);
- if (irq->devid == devid) {
- ucb->irq_ris_enbl &= ~(1 << idx);
- ucb->irq_fal_enbl &= ~(1 << idx);
+ return 0;
+}
- ucb1x00_enable(ucb);
- ucb1x00_reg_write(ucb, UCB_IE_RIS, ucb->irq_ris_enbl);
- ucb1x00_reg_write(ucb, UCB_IE_FAL, ucb->irq_fal_enbl);
- ucb1x00_disable(ucb);
+static int ucb1x00_irq_set_wake(struct irq_data *data, unsigned int on)
+{
+ struct ucb1x00 *ucb = irq_data_get_irq_chip_data(data);
+ struct ucb1x00_plat_data *pdata = ucb->mcp->attached_device.platform_data;
+ unsigned mask = 1 << (data->irq - ucb->irq_base);
- irq->fn = NULL;
- irq->devid = NULL;
- ret = 0;
- }
- spin_unlock_irq(&ucb->lock);
- return ret;
+ if (!pdata || !pdata->can_wakeup)
+ return -EINVAL;
-bad:
- printk(KERN_ERR "Freeing bad UCB1x00 irq %d\n", idx);
- return -EINVAL;
+ raw_spin_lock(&ucb->irq_lock);
+ if (on)
+ ucb->irq_wake |= mask;
+ else
+ ucb->irq_wake &= ~mask;
+ raw_spin_unlock(&ucb->irq_lock);
+
+ return 0;
}
+static struct irq_chip ucb1x00_irqchip = {
+ .name = "ucb1x00",
+ .irq_ack = ucb1x00_irq_noop,
+ .irq_mask = ucb1x00_irq_mask,
+ .irq_unmask = ucb1x00_irq_unmask,
+ .irq_set_type = ucb1x00_irq_set_type,
+ .irq_set_wake = ucb1x00_irq_set_wake,
+};
+
static int ucb1x00_add_dev(struct ucb1x00 *ucb, struct ucb1x00_driver *drv)
{
struct ucb1x00_dev *dev;
ret = drv->add(dev);
if (ret == 0) {
- list_add(&dev->dev_node, &ucb->devs);
- list_add(&dev->drv_node, &drv->devs);
+ list_add_tail(&dev->dev_node, &ucb->devs);
+ list_add_tail(&dev->drv_node, &drv->devs);
} else {
kfree(dev);
}
static int ucb1x00_probe(struct mcp *mcp)
{
- struct ucb1x00 *ucb;
+ struct ucb1x00_plat_data *pdata = mcp->attached_device.platform_data;
struct ucb1x00_driver *drv;
- unsigned int id;
+ struct ucb1x00 *ucb;
+ unsigned id, i, irq_base;
int ret = -ENODEV;
- int temp;
+
+ /* Tell the platform to deassert the UCB1x00 reset */
+ if (pdata && pdata->reset)
+ pdata->reset(UCB_RST_PROBE);
mcp_enable(mcp);
id = mcp_reg_read(mcp, UCB_ID);
+ mcp_disable(mcp);
if (id != UCB_ID_1200 && id != UCB_ID_1300 && id != UCB_ID_TC35143) {
printk(KERN_WARNING "UCB1x00 ID not found: %04x\n", id);
- goto err_disable;
+ goto out;
}
ucb = kzalloc(sizeof(struct ucb1x00), GFP_KERNEL);
ret = -ENOMEM;
if (!ucb)
- goto err_disable;
-
+ goto out;
+ device_initialize(&ucb->dev);
ucb->dev.class = &ucb1x00_class;
ucb->dev.parent = &mcp->attached_device;
dev_set_name(&ucb->dev, "ucb1x00");
- spin_lock_init(&ucb->lock);
+ raw_spin_lock_init(&ucb->irq_lock);
spin_lock_init(&ucb->io_lock);
- sema_init(&ucb->adc_sem, 1);
+ mutex_init(&ucb->adc_mutex);
ucb->id = id;
ucb->mcp = mcp;
+
+ ret = device_add(&ucb->dev);
+ if (ret)
+ goto err_dev_add;
+
+ ucb1x00_enable(ucb);
ucb->irq = ucb1x00_detect_irq(ucb);
+ ucb1x00_disable(ucb);
if (ucb->irq == NO_IRQ) {
- printk(KERN_ERR "UCB1x00: IRQ probe failed\n");
+ dev_err(&ucb->dev, "IRQ probe failed\n");
ret = -ENODEV;
- goto err_free;
+ goto err_no_irq;
}
ucb->gpio.base = -1;
- if (mcp->gpio_base != 0) {
+ irq_base = pdata ? pdata->irq_base : 0;
+ ucb->irq_base = irq_alloc_descs(-1, irq_base, 16, -1);
+ if (ucb->irq_base < 0) {
+ dev_err(&ucb->dev, "unable to allocate 16 irqs: %d\n",
+ ucb->irq_base);
+ goto err_irq_alloc;
+ }
+
+ for (i = 0; i < 16; i++) {
+ unsigned irq = ucb->irq_base + i;
+
+ irq_set_chip_and_handler(irq, &ucb1x00_irqchip, handle_edge_irq);
+ irq_set_chip_data(irq, ucb);
+ set_irq_flags(irq, IRQF_VALID | IRQ_NOREQUEST);
+ }
+
+ irq_set_irq_type(ucb->irq, IRQ_TYPE_EDGE_RISING);
+ irq_set_handler_data(ucb->irq, ucb);
+ irq_set_chained_handler(ucb->irq, ucb1x00_irq);
+
+ if (pdata && pdata->gpio_base) {
ucb->gpio.label = dev_name(&ucb->dev);
- ucb->gpio.base = mcp->gpio_base;
+ ucb->gpio.dev = &ucb->dev;
+ ucb->gpio.owner = THIS_MODULE;
+ ucb->gpio.base = pdata->gpio_base;
ucb->gpio.ngpio = 10;
ucb->gpio.set = ucb1x00_gpio_set;
ucb->gpio.get = ucb1x00_gpio_get;
ucb->gpio.direction_input = ucb1x00_gpio_direction_input;
ucb->gpio.direction_output = ucb1x00_gpio_direction_output;
+ ucb->gpio.to_irq = ucb1x00_to_irq;
ret = gpiochip_add(&ucb->gpio);
if (ret)
- goto err_free;
+ goto err_gpio_add;
} else
dev_info(&ucb->dev, "gpio_base not set so no gpiolib support");
- ret = request_irq(ucb->irq, ucb1x00_irq, IRQF_TRIGGER_RISING,
- "UCB1x00", ucb);
- if (ret) {
- printk(KERN_ERR "ucb1x00: unable to grab irq%d: %d\n",
- ucb->irq, ret);
- goto err_gpio;
- }
-
mcp_set_drvdata(mcp, ucb);
- ret = device_register(&ucb->dev);
- if (ret)
- goto err_irq;
-
+ if (pdata)
+ device_set_wakeup_capable(&ucb->dev, pdata->can_wakeup);
INIT_LIST_HEAD(&ucb->devs);
mutex_lock(&ucb1x00_mutex);
- list_add(&ucb->node, &ucb1x00_devices);
+ list_add_tail(&ucb->node, &ucb1x00_devices);
list_for_each_entry(drv, &ucb1x00_drivers, node) {
ucb1x00_add_dev(ucb, drv);
}
mutex_unlock(&ucb1x00_mutex);
- goto out;
+ return ret;
- err_irq:
- free_irq(ucb->irq, ucb);
- err_gpio:
- if (ucb->gpio.base != -1)
- temp = gpiochip_remove(&ucb->gpio);
- err_free:
- kfree(ucb);
- err_disable:
- mcp_disable(mcp);
+ err_gpio_add:
+ irq_set_chained_handler(ucb->irq, NULL);
+ err_irq_alloc:
+ if (ucb->irq_base > 0)
+ irq_free_descs(ucb->irq_base, 16);
+ err_no_irq:
+ device_del(&ucb->dev);
+ err_dev_add:
+ put_device(&ucb->dev);
out:
+ if (pdata && pdata->reset)
+ pdata->reset(UCB_RST_PROBE_FAIL);
return ret;
}
static void ucb1x00_remove(struct mcp *mcp)
{
+ struct ucb1x00_plat_data *pdata = mcp->attached_device.platform_data;
struct ucb1x00 *ucb = mcp_get_drvdata(mcp);
struct list_head *l, *n;
int ret;
dev_err(&ucb->dev, "Can't remove gpio chip: %d\n", ret);
}
- free_irq(ucb->irq, ucb);
+ irq_set_chained_handler(ucb->irq, NULL);
+ irq_free_descs(ucb->irq_base, 16);
device_unregister(&ucb->dev);
+
+ if (pdata && pdata->reset)
+ pdata->reset(UCB_RST_REMOVE);
}
int ucb1x00_register_driver(struct ucb1x00_driver *drv)
INIT_LIST_HEAD(&drv->devs);
mutex_lock(&ucb1x00_mutex);
- list_add(&drv->node, &ucb1x00_drivers);
+ list_add_tail(&drv->node, &ucb1x00_drivers);
list_for_each_entry(ucb, &ucb1x00_devices, node) {
ucb1x00_add_dev(ucb, drv);
}
mutex_unlock(&ucb1x00_mutex);
}
-static int ucb1x00_suspend(struct mcp *mcp, pm_message_t state)
+static int ucb1x00_suspend(struct device *dev)
{
- struct ucb1x00 *ucb = mcp_get_drvdata(mcp);
- struct ucb1x00_dev *dev;
+ struct ucb1x00_plat_data *pdata = dev->platform_data;
+ struct ucb1x00 *ucb = dev_get_drvdata(dev);
+ struct ucb1x00_dev *udev;
mutex_lock(&ucb1x00_mutex);
- list_for_each_entry(dev, &ucb->devs, dev_node) {
- if (dev->drv->suspend)
- dev->drv->suspend(dev, state);
+ list_for_each_entry(udev, &ucb->devs, dev_node) {
+ if (udev->drv->suspend)
+ udev->drv->suspend(udev);
}
mutex_unlock(&ucb1x00_mutex);
+
+ if (ucb->irq_wake) {
+ unsigned long flags;
+
+ raw_spin_lock_irqsave(&ucb->irq_lock, flags);
+ ucb1x00_enable(ucb);
+ ucb1x00_reg_write(ucb, UCB_IE_RIS, ucb->irq_ris_enbl &
+ ucb->irq_wake);
+ ucb1x00_reg_write(ucb, UCB_IE_FAL, ucb->irq_fal_enbl &
+ ucb->irq_wake);
+ ucb1x00_disable(ucb);
+ raw_spin_unlock_irqrestore(&ucb->irq_lock, flags);
+
+ enable_irq_wake(ucb->irq);
+ } else if (pdata && pdata->reset)
+ pdata->reset(UCB_RST_SUSPEND);
+
return 0;
}
-static int ucb1x00_resume(struct mcp *mcp)
+static int ucb1x00_resume(struct device *dev)
{
- struct ucb1x00 *ucb = mcp_get_drvdata(mcp);
- struct ucb1x00_dev *dev;
+ struct ucb1x00_plat_data *pdata = dev->platform_data;
+ struct ucb1x00 *ucb = dev_get_drvdata(dev);
+ struct ucb1x00_dev *udev;
+
+ if (!ucb->irq_wake && pdata && pdata->reset)
+ pdata->reset(UCB_RST_RESUME);
+ ucb1x00_enable(ucb);
ucb1x00_reg_write(ucb, UCB_IO_DATA, ucb->io_out);
ucb1x00_reg_write(ucb, UCB_IO_DIR, ucb->io_dir);
+
+ if (ucb->irq_wake) {
+ unsigned long flags;
+
+ raw_spin_lock_irqsave(&ucb->irq_lock, flags);
+ ucb1x00_reg_write(ucb, UCB_IE_RIS, ucb->irq_ris_enbl &
+ ucb->irq_mask);
+ ucb1x00_reg_write(ucb, UCB_IE_FAL, ucb->irq_fal_enbl &
+ ucb->irq_mask);
+ raw_spin_unlock_irqrestore(&ucb->irq_lock, flags);
+
+ disable_irq_wake(ucb->irq);
+ }
+ ucb1x00_disable(ucb);
+
mutex_lock(&ucb1x00_mutex);
- list_for_each_entry(dev, &ucb->devs, dev_node) {
- if (dev->drv->resume)
- dev->drv->resume(dev);
+ list_for_each_entry(udev, &ucb->devs, dev_node) {
+ if (udev->drv->resume)
+ udev->drv->resume(udev);
}
mutex_unlock(&ucb1x00_mutex);
return 0;
}
+static const struct dev_pm_ops ucb1x00_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(ucb1x00_suspend, ucb1x00_resume)
+};
+
static struct mcp_driver ucb1x00_driver = {
.drv = {
.name = "ucb1x00",
+ .owner = THIS_MODULE,
+ .pm = &ucb1x00_pm_ops,
},
.probe = ucb1x00_probe,
.remove = ucb1x00_remove,
- .suspend = ucb1x00_suspend,
- .resume = ucb1x00_resume,
};
static int __init ucb1x00_init(void)
EXPORT_SYMBOL(ucb1x00_adc_read);
EXPORT_SYMBOL(ucb1x00_adc_disable);
-EXPORT_SYMBOL(ucb1x00_hook_irq);
-EXPORT_SYMBOL(ucb1x00_free_irq);
-EXPORT_SYMBOL(ucb1x00_enable_irq);
-EXPORT_SYMBOL(ucb1x00_disable_irq);
-
EXPORT_SYMBOL(ucb1x00_register_driver);
EXPORT_SYMBOL(ucb1x00_unregister_driver);
+MODULE_ALIAS("mcp:ucb1x00");
MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>");
MODULE_DESCRIPTION("UCB1x00 core driver");
MODULE_LICENSE("GPL");
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
-#include <linux/smp.h>
+#include <linux/interrupt.h>
#include <linux/sched.h>
+#include <linux/spinlock.h>
#include <linux/completion.h>
#include <linux/delay.h>
#include <linux/string.h>
#include <linux/kthread.h>
#include <linux/mfd/ucb1x00.h>
-#include <mach/dma.h>
#include <mach/collie.h>
#include <asm/mach-types.h>
struct input_dev *idev;
struct ucb1x00 *ucb;
+ spinlock_t irq_lock;
+ unsigned irq_disabled;
wait_queue_head_t irq_wait;
struct task_struct *rtask;
u16 x_res;
if (ucb1x00_ts_pen_down(ts)) {
set_current_state(TASK_INTERRUPTIBLE);
- ucb1x00_enable_irq(ts->ucb, UCB_IRQ_TSPX, machine_is_collie() ? UCB_RISING : UCB_FALLING);
+ spin_lock_irq(&ts->irq_lock);
+ if (ts->irq_disabled) {
+ ts->irq_disabled = 0;
+ enable_irq(ts->ucb->irq_base + UCB_IRQ_TSPX);
+ }
+ spin_unlock_irq(&ts->irq_lock);
ucb1x00_disable(ts->ucb);
/*
* We only detect touch screen _touches_ with this interrupt
* handler, and even then we just schedule our task.
*/
-static void ucb1x00_ts_irq(int idx, void *id)
+static irqreturn_t ucb1x00_ts_irq(int irq, void *id)
{
struct ucb1x00_ts *ts = id;
- ucb1x00_disable_irq(ts->ucb, UCB_IRQ_TSPX, UCB_FALLING);
+ spin_lock(&ts->irq_lock);
+ ts->irq_disabled = 1;
+ disable_irq_nosync(ts->ucb->irq_base + UCB_IRQ_TSPX);
+ spin_unlock(&ts->irq_lock);
wake_up(&ts->irq_wait);
+
+ return IRQ_HANDLED;
}
static int ucb1x00_ts_open(struct input_dev *idev)
{
struct ucb1x00_ts *ts = input_get_drvdata(idev);
+ unsigned long flags = 0;
int ret = 0;
BUG_ON(ts->rtask);
+ if (machine_is_collie())
+ flags = IRQF_TRIGGER_RISING;
+ else
+ flags = IRQF_TRIGGER_FALLING;
+
+ ts->irq_disabled = 0;
+
init_waitqueue_head(&ts->irq_wait);
- ret = ucb1x00_hook_irq(ts->ucb, UCB_IRQ_TSPX, ucb1x00_ts_irq, ts);
+ ret = request_irq(ts->ucb->irq_base + UCB_IRQ_TSPX, ucb1x00_ts_irq,
+ flags, "ucb1x00-ts", ts);
if (ret < 0)
goto out;
if (!IS_ERR(ts->rtask)) {
ret = 0;
} else {
- ucb1x00_free_irq(ts->ucb, UCB_IRQ_TSPX, ts);
+ free_irq(ts->ucb->irq_base + UCB_IRQ_TSPX, ts);
ts->rtask = NULL;
ret = -EFAULT;
}
kthread_stop(ts->rtask);
ucb1x00_enable(ts->ucb);
- ucb1x00_free_irq(ts->ucb, UCB_IRQ_TSPX, ts);
+ free_irq(ts->ucb->irq_base + UCB_IRQ_TSPX, ts);
ucb1x00_reg_write(ts->ucb, UCB_TS_CR, 0);
ucb1x00_disable(ts->ucb);
}
ts->ucb = dev->ucb;
ts->idev = idev;
ts->adcsync = adcsync ? UCB_SYNC : UCB_NOSYNC;
+ spin_lock_init(&ts->irq_lock);
idev->name = "Touchscreen panel";
idev->id.product = ts->ucb->id;
idev->open = ucb1x00_ts_open;
idev->close = ucb1x00_ts_close;
+ idev->dev.parent = &ts->ucb->dev;
idev->evbit[0] = BIT_MASK(EV_ABS) | BIT_MASK(EV_KEY);
idev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
#ifndef MCP_H
#define MCP_H
-#include <mach/dma.h>
-
struct mcp_ops;
struct mcp {
int use_count;
unsigned int sclk_rate;
unsigned int rw_timeout;
- dma_device_t dma_audio_rd;
- dma_device_t dma_audio_wr;
- dma_device_t dma_telco_rd;
- dma_device_t dma_telco_wr;
struct device attached_device;
- int gpio_base;
};
struct mcp_ops {
#define mcp_get_sclk_rate(mcp) ((mcp)->sclk_rate)
struct mcp *mcp_host_alloc(struct device *, size_t);
-int mcp_host_register(struct mcp *);
-void mcp_host_unregister(struct mcp *);
+int mcp_host_add(struct mcp *, void *);
+void mcp_host_del(struct mcp *);
+void mcp_host_free(struct mcp *);
struct mcp_driver {
struct device_driver drv;
int (*probe)(struct mcp *);
void (*remove)(struct mcp *);
- int (*suspend)(struct mcp *, pm_message_t);
- int (*resume)(struct mcp *);
};
int mcp_driver_register(struct mcp_driver *);
#include <linux/mfd/mcp.h>
#include <linux/gpio.h>
-#include <linux/semaphore.h>
+#include <linux/mutex.h>
#define UCB_IO_DATA 0x00
#define UCB_IO_DIR 0x01
#define UCB_MODE_DYN_VFLAG_ENA (1 << 12)
#define UCB_MODE_AUD_OFF_CAN (1 << 13)
+enum ucb1x00_reset {
+ UCB_RST_PROBE,
+ UCB_RST_RESUME,
+ UCB_RST_SUSPEND,
+ UCB_RST_REMOVE,
+ UCB_RST_PROBE_FAIL,
+};
-struct ucb1x00_irq {
- void *devid;
- void (*fn)(int, void *);
+struct ucb1x00_plat_data {
+ void (*reset)(enum ucb1x00_reset);
+ unsigned irq_base;
+ int gpio_base;
+ unsigned can_wakeup;
};
struct ucb1x00 {
- spinlock_t lock;
+ raw_spinlock_t irq_lock;
struct mcp *mcp;
unsigned int irq;
- struct semaphore adc_sem;
+ int irq_base;
+ struct mutex adc_mutex;
spinlock_t io_lock;
u16 id;
u16 io_dir;
u16 adc_cr;
u16 irq_fal_enbl;
u16 irq_ris_enbl;
- struct ucb1x00_irq irq_handler[16];
+ u16 irq_mask;
+ u16 irq_wake;
struct device dev;
struct list_head node;
struct list_head devs;
struct list_head devs;
int (*add)(struct ucb1x00_dev *dev);
void (*remove)(struct ucb1x00_dev *dev);
- int (*suspend)(struct ucb1x00_dev *dev, pm_message_t state);
+ int (*suspend)(struct ucb1x00_dev *dev);
int (*resume)(struct ucb1x00_dev *dev);
};
void ucb1x00_adc_enable(struct ucb1x00 *ucb);
void ucb1x00_adc_disable(struct ucb1x00 *ucb);
-/*
- * Which edges of the IRQ do you want to control today?
- */
-#define UCB_RISING (1 << 0)
-#define UCB_FALLING (1 << 1)
-
-int ucb1x00_hook_irq(struct ucb1x00 *ucb, unsigned int idx, void (*fn)(int, void *), void *devid);
-void ucb1x00_enable_irq(struct ucb1x00 *ucb, unsigned int idx, int edges);
-void ucb1x00_disable_irq(struct ucb1x00 *ucb, unsigned int idx, int edges);
-int ucb1x00_free_irq(struct ucb1x00 *ucb, unsigned int idx, void *devid);
-
#endif
projects / mv-sheeva.git / commitdiff