aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/mach-ep93xx/core.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-ep93xx/core.c')
-rw-r--r--arch/arm/mach-ep93xx/core.c123
1 files changed, 110 insertions, 13 deletions
diff --git a/arch/arm/mach-ep93xx/core.c b/arch/arm/mach-ep93xx/core.c
index 90fb591cbff..9092677f63e 100644
--- a/arch/arm/mach-ep93xx/core.c
+++ b/arch/arm/mach-ep93xx/core.c
@@ -31,10 +31,12 @@
#include <linux/amba/serial.h>
#include <linux/i2c.h>
#include <linux/i2c-gpio.h>
+#include <linux/spi/spi.h>
#include <mach/hardware.h>
#include <mach/fb.h>
#include <mach/ep93xx_keypad.h>
+#include <mach/ep93xx_spi.h>
#include <asm/mach/map.h>
#include <asm/mach/time.h>
@@ -222,6 +224,20 @@ void ep93xx_devcfg_set_clear(unsigned int set_bits, unsigned int clear_bits)
}
EXPORT_SYMBOL(ep93xx_devcfg_set_clear);
+/**
+ * ep93xx_chip_revision() - returns the EP93xx chip revision
+ *
+ * See <mach/platform.h> for more information.
+ */
+unsigned int ep93xx_chip_revision(void)
+{
+ unsigned int v;
+
+ v = __raw_readl(EP93XX_SYSCON_SYSCFG);
+ v &= EP93XX_SYSCON_SYSCFG_REV_MASK;
+ v >>= EP93XX_SYSCON_SYSCFG_REV_SHIFT;
+ return v;
+}
/*************************************************************************
* EP93xx peripheral handling
@@ -330,6 +346,10 @@ static struct platform_device ep93xx_ohci_device = {
.resource = ep93xx_ohci_resources,
};
+
+/*************************************************************************
+ * EP93xx ethernet peripheral handling
+ *************************************************************************/
static struct ep93xx_eth_data ep93xx_eth_data;
static struct resource ep93xx_eth_resource[] = {
@@ -354,6 +374,12 @@ static struct platform_device ep93xx_eth_device = {
.resource = ep93xx_eth_resource,
};
+/**
+ * ep93xx_register_eth - Register the built-in ethernet platform device.
+ * @data: platform specific ethernet configuration (__initdata)
+ * @copy_addr: flag indicating that the MAC address should be copied
+ * from the IndAd registers (as programmed by the bootloader)
+ */
void __init ep93xx_register_eth(struct ep93xx_eth_data *data, int copy_addr)
{
if (copy_addr)
@@ -370,11 +396,19 @@ void __init ep93xx_register_eth(struct ep93xx_eth_data *data, int copy_addr)
static struct i2c_gpio_platform_data ep93xx_i2c_data;
static struct platform_device ep93xx_i2c_device = {
- .name = "i2c-gpio",
- .id = 0,
- .dev.platform_data = &ep93xx_i2c_data,
+ .name = "i2c-gpio",
+ .id = 0,
+ .dev = {
+ .platform_data = &ep93xx_i2c_data,
+ },
};
+/**
+ * ep93xx_register_i2c - Register the i2c platform device.
+ * @data: platform specific i2c-gpio configuration (__initdata)
+ * @devices: platform specific i2c bus device information (__initdata)
+ * @num: the number of devices on the i2c bus
+ */
void __init ep93xx_register_i2c(struct i2c_gpio_platform_data *data,
struct i2c_board_info *devices, int num)
{
@@ -398,17 +432,67 @@ void __init ep93xx_register_i2c(struct i2c_gpio_platform_data *data,
platform_device_register(&ep93xx_i2c_device);
}
+/*************************************************************************
+ * EP93xx SPI peripheral handling
+ *************************************************************************/
+static struct ep93xx_spi_info ep93xx_spi_master_data;
+
+static struct resource ep93xx_spi_resources[] = {
+ {
+ .start = EP93XX_SPI_PHYS_BASE,
+ .end = EP93XX_SPI_PHYS_BASE + 0x18 - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = IRQ_EP93XX_SSP,
+ .end = IRQ_EP93XX_SSP,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device ep93xx_spi_device = {
+ .name = "ep93xx-spi",
+ .id = 0,
+ .dev = {
+ .platform_data = &ep93xx_spi_master_data,
+ },
+ .num_resources = ARRAY_SIZE(ep93xx_spi_resources),
+ .resource = ep93xx_spi_resources,
+};
+
+/**
+ * ep93xx_register_spi() - registers spi platform device
+ * @info: ep93xx board specific spi master info (__initdata)
+ * @devices: SPI devices to register (__initdata)
+ * @num: number of SPI devices to register
+ *
+ * This function registers platform device for the EP93xx SPI controller and
+ * also makes sure that SPI pins are muxed so that I2S is not using those pins.
+ */
+void __init ep93xx_register_spi(struct ep93xx_spi_info *info,
+ struct spi_board_info *devices, int num)
+{
+ /*
+ * When SPI is used, we need to make sure that I2S is muxed off from
+ * SPI pins.
+ */
+ ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_I2SONSSP);
+
+ ep93xx_spi_master_data = *info;
+ spi_register_board_info(devices, num);
+ platform_device_register(&ep93xx_spi_device);
+}
/*************************************************************************
* EP93xx LEDs
*************************************************************************/
static struct gpio_led ep93xx_led_pins[] = {
{
- .name = "platform:grled",
- .gpio = EP93XX_GPIO_LINE_GRLED,
+ .name = "platform:grled",
+ .gpio = EP93XX_GPIO_LINE_GRLED,
}, {
- .name = "platform:rdled",
- .gpio = EP93XX_GPIO_LINE_RDLED,
+ .name = "platform:rdled",
+ .gpio = EP93XX_GPIO_LINE_RDLED,
},
};
@@ -528,7 +612,7 @@ static struct platform_device ep93xx_fb_device = {
.name = "ep93xx-fb",
.id = -1,
.dev = {
- .platform_data = &ep93xxfb_data,
+ .platform_data = &ep93xxfb_data,
.coherent_dma_mask = DMA_BIT_MASK(32),
.dma_mask = &ep93xx_fb_device.dev.coherent_dma_mask,
},
@@ -536,6 +620,10 @@ static struct platform_device ep93xx_fb_device = {
.resource = ep93xx_fb_resource,
};
+/**
+ * ep93xx_register_fb - Register the framebuffer platform device.
+ * @data: platform specific framebuffer configuration (__initdata)
+ */
void __init ep93xx_register_fb(struct ep93xxfb_mach_info *data)
{
ep93xxfb_data = *data;
@@ -546,6 +634,8 @@ void __init ep93xx_register_fb(struct ep93xxfb_mach_info *data)
/*************************************************************************
* EP93xx matrix keypad peripheral handling
*************************************************************************/
+static struct ep93xx_keypad_platform_data ep93xx_keypad_data;
+
static struct resource ep93xx_keypad_resource[] = {
{
.start = EP93XX_KEY_MATRIX_PHYS_BASE,
@@ -559,15 +649,22 @@ static struct resource ep93xx_keypad_resource[] = {
};
static struct platform_device ep93xx_keypad_device = {
- .name = "ep93xx-keypad",
- .id = -1,
- .num_resources = ARRAY_SIZE(ep93xx_keypad_resource),
- .resource = ep93xx_keypad_resource,
+ .name = "ep93xx-keypad",
+ .id = -1,
+ .dev = {
+ .platform_data = &ep93xx_keypad_data,
+ },
+ .num_resources = ARRAY_SIZE(ep93xx_keypad_resource),
+ .resource = ep93xx_keypad_resource,
};
+/**
+ * ep93xx_register_keypad - Register the keypad platform device.
+ * @data: platform specific keypad configuration (__initdata)
+ */
void __init ep93xx_register_keypad(struct ep93xx_keypad_platform_data *data)
{
- ep93xx_keypad_device.dev.platform_data = data;
+ ep93xx_keypad_data = *data;
platform_device_register(&ep93xx_keypad_device);
}