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-rw-r--r--arch/arm/mach-mxs/devices/platform-gpio-mxs.c24
-rw-r--r--arch/arm/mach-mxs/include/mach/common.h4
-rw-r--r--arch/arm/mach-mxs/mm.c10
-rw-r--r--drivers/gpio/gpio-mxs.c74
4 files changed, 66 insertions, 46 deletions
diff --git a/arch/arm/mach-mxs/devices/platform-gpio-mxs.c b/arch/arm/mach-mxs/devices/platform-gpio-mxs.c
index ed0885e414e0..cd99f19ec637 100644
--- a/arch/arm/mach-mxs/devices/platform-gpio-mxs.c
+++ b/arch/arm/mach-mxs/devices/platform-gpio-mxs.c
@@ -14,7 +14,7 @@
#include <mach/devices-common.h>
struct platform_device *__init mxs_add_gpio(
- int id, resource_size_t iobase, int irq)
+ char *name, int id, resource_size_t iobase, int irq)
{
struct resource res[] = {
{
@@ -29,25 +29,5 @@ struct platform_device *__init mxs_add_gpio(
};
return platform_device_register_resndata(&mxs_apbh_bus,
- "gpio-mxs", id, res, ARRAY_SIZE(res), NULL, 0);
+ name, id, res, ARRAY_SIZE(res), NULL, 0);
}
-
-static int __init mxs_add_mxs_gpio(void)
-{
- if (cpu_is_mx23()) {
- mxs_add_gpio(0, MX23_PINCTRL_BASE_ADDR, MX23_INT_GPIO0);
- mxs_add_gpio(1, MX23_PINCTRL_BASE_ADDR, MX23_INT_GPIO1);
- mxs_add_gpio(2, MX23_PINCTRL_BASE_ADDR, MX23_INT_GPIO2);
- }
-
- if (cpu_is_mx28()) {
- mxs_add_gpio(0, MX28_PINCTRL_BASE_ADDR, MX28_INT_GPIO0);
- mxs_add_gpio(1, MX28_PINCTRL_BASE_ADDR, MX28_INT_GPIO1);
- mxs_add_gpio(2, MX28_PINCTRL_BASE_ADDR, MX28_INT_GPIO2);
- mxs_add_gpio(3, MX28_PINCTRL_BASE_ADDR, MX28_INT_GPIO3);
- mxs_add_gpio(4, MX28_PINCTRL_BASE_ADDR, MX28_INT_GPIO4);
- }
-
- return 0;
-}
-postcore_initcall(mxs_add_mxs_gpio);
diff --git a/arch/arm/mach-mxs/include/mach/common.h b/arch/arm/mach-mxs/include/mach/common.h
index 5f9a3583266c..de6c7ba42544 100644
--- a/arch/arm/mach-mxs/include/mach/common.h
+++ b/arch/arm/mach-mxs/include/mach/common.h
@@ -18,13 +18,11 @@ extern void mxs_restart(char, const char *);
extern int mxs_saif_clkmux_select(unsigned int clkmux);
extern void mx23_soc_init(void);
-extern int mx23_register_gpios(void);
extern int mx23_clocks_init(void);
extern void mx23_map_io(void);
extern void mx23_init_irq(void);
extern void mx28_soc_init(void);
-extern int mx28_register_gpios(void);
extern int mx28_clocks_init(void);
extern void mx28_map_io(void);
extern void mx28_init_irq(void);
@@ -33,5 +31,7 @@ extern void icoll_init_irq(void);
extern struct platform_device *mxs_add_dma(const char *devid,
resource_size_t base);
+extern struct platform_device *mxs_add_gpio(char *name, int id,
+ resource_size_t iobase, int irq);
#endif /* __MACH_MXS_COMMON_H__ */
diff --git a/arch/arm/mach-mxs/mm.c b/arch/arm/mach-mxs/mm.c
index 6af4371ec829..dccb67a9e7c4 100644
--- a/arch/arm/mach-mxs/mm.c
+++ b/arch/arm/mach-mxs/mm.c
@@ -69,6 +69,10 @@ void __init mx23_soc_init(void)
mxs_add_dma("imx23-dma-apbh", MX23_APBH_DMA_BASE_ADDR);
mxs_add_dma("imx23-dma-apbx", MX23_APBX_DMA_BASE_ADDR);
+
+ mxs_add_gpio("imx23-gpio", 0, MX23_PINCTRL_BASE_ADDR, MX23_INT_GPIO0);
+ mxs_add_gpio("imx23-gpio", 1, MX23_PINCTRL_BASE_ADDR, MX23_INT_GPIO1);
+ mxs_add_gpio("imx23-gpio", 2, MX23_PINCTRL_BASE_ADDR, MX23_INT_GPIO2);
}
void __init mx28_soc_init(void)
@@ -77,4 +81,10 @@ void __init mx28_soc_init(void)
mxs_add_dma("imx28-dma-apbh", MX23_APBH_DMA_BASE_ADDR);
mxs_add_dma("imx28-dma-apbx", MX23_APBX_DMA_BASE_ADDR);
+
+ mxs_add_gpio("imx28-gpio", 0, MX28_PINCTRL_BASE_ADDR, MX28_INT_GPIO0);
+ mxs_add_gpio("imx28-gpio", 1, MX28_PINCTRL_BASE_ADDR, MX28_INT_GPIO1);
+ mxs_add_gpio("imx28-gpio", 2, MX28_PINCTRL_BASE_ADDR, MX28_INT_GPIO2);
+ mxs_add_gpio("imx28-gpio", 3, MX28_PINCTRL_BASE_ADDR, MX28_INT_GPIO3);
+ mxs_add_gpio("imx28-gpio", 4, MX28_PINCTRL_BASE_ADDR, MX28_INT_GPIO4);
}
diff --git a/drivers/gpio/gpio-mxs.c b/drivers/gpio/gpio-mxs.c
index 95a11dba285c..38ae56f17916 100644
--- a/drivers/gpio/gpio-mxs.c
+++ b/drivers/gpio/gpio-mxs.c
@@ -29,19 +29,18 @@
#include <linux/slab.h>
#include <linux/basic_mmio_gpio.h>
#include <linux/module.h>
-#include <mach/mxs.h>
#define MXS_SET 0x4
#define MXS_CLR 0x8
-#define PINCTRL_DOUT(n) ((cpu_is_mx23() ? 0x0500 : 0x0700) + (n) * 0x10)
-#define PINCTRL_DIN(n) ((cpu_is_mx23() ? 0x0600 : 0x0900) + (n) * 0x10)
-#define PINCTRL_DOE(n) ((cpu_is_mx23() ? 0x0700 : 0x0b00) + (n) * 0x10)
-#define PINCTRL_PIN2IRQ(n) ((cpu_is_mx23() ? 0x0800 : 0x1000) + (n) * 0x10)
-#define PINCTRL_IRQEN(n) ((cpu_is_mx23() ? 0x0900 : 0x1100) + (n) * 0x10)
-#define PINCTRL_IRQLEV(n) ((cpu_is_mx23() ? 0x0a00 : 0x1200) + (n) * 0x10)
-#define PINCTRL_IRQPOL(n) ((cpu_is_mx23() ? 0x0b00 : 0x1300) + (n) * 0x10)
-#define PINCTRL_IRQSTAT(n) ((cpu_is_mx23() ? 0x0c00 : 0x1400) + (n) * 0x10)
+#define PINCTRL_DOUT(p) ((is_imx23_gpio(p) ? 0x0500 : 0x0700) + (p->id) * 0x10)
+#define PINCTRL_DIN(p) ((is_imx23_gpio(p) ? 0x0600 : 0x0900) + (p->id) * 0x10)
+#define PINCTRL_DOE(p) ((is_imx23_gpio(p) ? 0x0700 : 0x0b00) + (p->id) * 0x10)
+#define PINCTRL_PIN2IRQ(p) ((is_imx23_gpio(p) ? 0x0800 : 0x1000) + (p->id) * 0x10)
+#define PINCTRL_IRQEN(p) ((is_imx23_gpio(p) ? 0x0900 : 0x1100) + (p->id) * 0x10)
+#define PINCTRL_IRQLEV(p) ((is_imx23_gpio(p) ? 0x0a00 : 0x1200) + (p->id) * 0x10)
+#define PINCTRL_IRQPOL(p) ((is_imx23_gpio(p) ? 0x0b00 : 0x1300) + (p->id) * 0x10)
+#define PINCTRL_IRQSTAT(p) ((is_imx23_gpio(p) ? 0x0c00 : 0x1400) + (p->id) * 0x10)
#define GPIO_INT_FALL_EDGE 0x0
#define GPIO_INT_LOW_LEV 0x1
@@ -52,14 +51,30 @@
#define irq_to_gpio(irq) ((irq) - MXS_GPIO_IRQ_START)
+enum mxs_gpio_id {
+ IMX23_GPIO,
+ IMX28_GPIO,
+};
+
struct mxs_gpio_port {
void __iomem *base;
int id;
int irq;
int virtual_irq_start;
struct bgpio_chip bgc;
+ enum mxs_gpio_id devid;
};
+static inline int is_imx23_gpio(struct mxs_gpio_port *port)
+{
+ return port->devid == IMX23_GPIO;
+}
+
+static inline int is_imx28_gpio(struct mxs_gpio_port *port)
+{
+ return port->devid == IMX28_GPIO;
+}
+
/* Note: This driver assumes 32 GPIOs are handled in one register */
static int mxs_gpio_set_irq_type(struct irq_data *d, unsigned int type)
@@ -89,21 +104,21 @@ static int mxs_gpio_set_irq_type(struct irq_data *d, unsigned int type)
}
/* set level or edge */
- pin_addr = port->base + PINCTRL_IRQLEV(port->id);
+ pin_addr = port->base + PINCTRL_IRQLEV(port);
if (edge & GPIO_INT_LEV_MASK)
writel(pin_mask, pin_addr + MXS_SET);
else
writel(pin_mask, pin_addr + MXS_CLR);
/* set polarity */
- pin_addr = port->base + PINCTRL_IRQPOL(port->id);
+ pin_addr = port->base + PINCTRL_IRQPOL(port);
if (edge & GPIO_INT_POL_MASK)
writel(pin_mask, pin_addr + MXS_SET);
else
writel(pin_mask, pin_addr + MXS_CLR);
writel(1 << (gpio & 0x1f),
- port->base + PINCTRL_IRQSTAT(port->id) + MXS_CLR);
+ port->base + PINCTRL_IRQSTAT(port) + MXS_CLR);
return 0;
}
@@ -117,8 +132,8 @@ static void mxs_gpio_irq_handler(u32 irq, struct irq_desc *desc)
desc->irq_data.chip->irq_ack(&desc->irq_data);
- irq_stat = readl(port->base + PINCTRL_IRQSTAT(port->id)) &
- readl(port->base + PINCTRL_IRQEN(port->id));
+ irq_stat = readl(port->base + PINCTRL_IRQSTAT(port)) &
+ readl(port->base + PINCTRL_IRQEN(port));
while (irq_stat != 0) {
int irqoffset = fls(irq_stat) - 1;
@@ -164,8 +179,8 @@ static void __init mxs_gpio_init_gc(struct mxs_gpio_port *port)
ct->chip.irq_unmask = irq_gc_mask_set_bit;
ct->chip.irq_set_type = mxs_gpio_set_irq_type;
ct->chip.irq_set_wake = mxs_gpio_set_wake_irq;
- ct->regs.ack = PINCTRL_IRQSTAT(port->id) + MXS_CLR;
- ct->regs.mask = PINCTRL_IRQEN(port->id);
+ ct->regs.ack = PINCTRL_IRQSTAT(port) + MXS_CLR;
+ ct->regs.mask = PINCTRL_IRQEN(port);
irq_setup_generic_chip(gc, IRQ_MSK(32), 0, IRQ_NOREQUEST, 0);
}
@@ -179,6 +194,19 @@ static int mxs_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
return port->virtual_irq_start + offset;
}
+static struct platform_device_id mxs_gpio_ids[] = {
+ {
+ .name = "imx23-gpio",
+ .driver_data = IMX23_GPIO,
+ }, {
+ .name = "imx28-gpio",
+ .driver_data = IMX28_GPIO,
+ }, {
+ /* sentinel */
+ }
+};
+MODULE_DEVICE_TABLE(platform, mxs_gpio_ids);
+
static int __devinit mxs_gpio_probe(struct platform_device *pdev)
{
static void __iomem *base;
@@ -191,6 +219,7 @@ static int __devinit mxs_gpio_probe(struct platform_device *pdev)
return -ENOMEM;
port->id = pdev->id;
+ port->devid = pdev->id_entry->driver_data;
port->virtual_irq_start = MXS_GPIO_IRQ_START + port->id * 32;
port->irq = platform_get_irq(pdev, 0);
@@ -213,11 +242,11 @@ static int __devinit mxs_gpio_probe(struct platform_device *pdev)
* select the pin interrupt functionality but initially
* disable the interrupts
*/
- writel(~0U, port->base + PINCTRL_PIN2IRQ(port->id));
- writel(0, port->base + PINCTRL_IRQEN(port->id));
+ writel(~0U, port->base + PINCTRL_PIN2IRQ(port));
+ writel(0, port->base + PINCTRL_IRQEN(port));
/* clear address has to be used to clear IRQSTAT bits */
- writel(~0U, port->base + PINCTRL_IRQSTAT(port->id) + MXS_CLR);
+ writel(~0U, port->base + PINCTRL_IRQSTAT(port) + MXS_CLR);
/* gpio-mxs can be a generic irq chip */
mxs_gpio_init_gc(port);
@@ -227,9 +256,9 @@ static int __devinit mxs_gpio_probe(struct platform_device *pdev)
irq_set_handler_data(port->irq, port);
err = bgpio_init(&port->bgc, &pdev->dev, 4,
- port->base + PINCTRL_DIN(port->id),
- port->base + PINCTRL_DOUT(port->id), NULL,
- port->base + PINCTRL_DOE(port->id), NULL, false);
+ port->base + PINCTRL_DIN(port),
+ port->base + PINCTRL_DOUT(port), NULL,
+ port->base + PINCTRL_DOE(port), NULL, false);
if (err)
return err;
@@ -251,6 +280,7 @@ static struct platform_driver mxs_gpio_driver = {
.owner = THIS_MODULE,
},
.probe = mxs_gpio_probe,
+ .id_table = mxs_gpio_ids,
};
static int __init mxs_gpio_init(void)
generated by cgit (git 2.34.1) at 2024-06-21 04:13:49 +0000