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/*
* Copyright 2011 Freescale Semiconductor, Inc. All Rights Reserved.
* Copyright 2011 Linaro Ltd.
*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/irqdomain.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <mach/common.h>
#include <mach/mx53.h>
/*
* Lookup table for attaching a specific name and platform_data pointer to
* devices as they get created by of_platform_populate(). Ideally this table
* would not exist, but the current clock implementation depends on some devices
* having a specific name.
*/
static const struct of_dev_auxdata imx53_auxdata_lookup[] __initconst = {
OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART1_BASE_ADDR, "imx21-uart.0", NULL),
OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART2_BASE_ADDR, "imx21-uart.1", NULL),
OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART3_BASE_ADDR, "imx21-uart.2", NULL),
OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART4_BASE_ADDR, "imx21-uart.3", NULL),
OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART5_BASE_ADDR, "imx21-uart.4", NULL),
OF_DEV_AUXDATA("fsl,imx53-fec", MX53_FEC_BASE_ADDR, "imx25-fec.0", NULL),
OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC1_BASE_ADDR, "sdhci-esdhc-imx53.0", NULL),
OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC2_BASE_ADDR, "sdhci-esdhc-imx53.1", NULL),
OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC3_BASE_ADDR, "sdhci-esdhc-imx53.2", NULL),
OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC4_BASE_ADDR, "sdhci-esdhc-imx53.3", NULL),
OF_DEV_AUXDATA("fsl,imx53-ecspi", MX53_ECSPI1_BASE_ADDR, "imx51-ecspi.0", NULL),
OF_DEV_AUXDATA("fsl,imx53-ecspi", MX53_ECSPI2_BASE_ADDR, "imx51-ecspi.1", NULL),
OF_DEV_AUXDATA("fsl,imx53-cspi", MX53_CSPI_BASE_ADDR, "imx35-cspi.0", NULL),
OF_DEV_AUXDATA("fsl,imx53-i2c", MX53_I2C1_BASE_ADDR, "imx-i2c.0", NULL),
OF_DEV_AUXDATA("fsl,imx53-i2c", MX53_I2C2_BASE_ADDR, "imx-i2c.1", NULL),
OF_DEV_AUXDATA("fsl,imx53-i2c", MX53_I2C3_BASE_ADDR, "imx-i2c.2", NULL),
OF_DEV_AUXDATA("fsl,imx53-sdma", MX53_SDMA_BASE_ADDR, "imx35-sdma", NULL),
OF_DEV_AUXDATA("fsl,imx53-wdt", MX53_WDOG1_BASE_ADDR, "imx2-wdt.0", NULL),
{ /* sentinel */ }
};
static int __init imx53_tzic_add_irq_domain(struct device_node *np,
struct device_node *interrupt_parent)
{
irq_domain_add_simple(np, 0);
return 0;
}
static int __init imx53_gpio_add_irq_domain(struct device_node *np,
struct device_node *interrupt_parent)
{
static int gpio_irq_base = MXC_GPIO_IRQ_START + ARCH_NR_GPIOS;
gpio_irq_base -= 32;
irq_domain_add_simple(np, gpio_irq_base);
return 0;
}
static const struct of_device_id imx53_irq_match[] __initconst = {
{ .compatible = "fsl,imx53-tzic", .data = imx53_tzic_add_irq_domain, },
{ .compatible = "fsl,imx53-gpio", .data = imx53_gpio_add_irq_domain, },
{ /* sentinel */ }
};
static const struct of_device_id imx53_iomuxc_of_match[] __initconst = {
{ .compatible = "fsl,imx53-iomuxc-ard", .data = imx53_ard_common_init, },
{ .compatible = "fsl,imx53-iomuxc-evk", .data = imx53_evk_common_init, },
{ .compatible = "fsl,imx53-iomuxc-qsb", .data = imx53_qsb_common_init, },
{ .compatible = "fsl,imx53-iomuxc-smd", .data = imx53_smd_common_init, },
{ /* sentinel */ }
};
static void __init imx53_dt_init(void)
{
struct device_node *node;
const struct of_device_id *of_id;
void (*func)(void);
of_irq_init(imx53_irq_match);
node = of_find_matching_node(NULL, imx53_iomuxc_of_match);
if (node) {
of_id = of_match_node(imx53_iomuxc_of_match, node);
func = of_id->data;
func();
of_node_put(node);
}
of_platform_populate(NULL, of_default_bus_match_table,
imx53_auxdata_lookup, NULL);
}
static void __init imx53_timer_init(void)
{
mx53_clocks_init_dt();
}
static struct sys_timer imx53_timer = {
.init = imx53_timer_init,
};
static const char *imx53_dt_board_compat[] __initdata = {
"fsl,imx53-ard",
"fsl,imx53-evk",
"fsl,imx53-qsb",
"fsl,imx53-smd",
NULL
};
DT_MACHINE_START(IMX53_DT, "Freescale i.MX53 (Device Tree Support)")
.map_io = mx53_map_io,
.init_early = imx53_init_early,
.init_irq = mx53_init_irq,
.handle_irq = imx53_handle_irq,
.timer = &imx53_timer,
.init_machine = imx53_dt_init,
.dt_compat = imx53_dt_board_compat,
.restart = mxc_restart,
MACHINE_END
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