| /* |
| * 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/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/mx51.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 imx51_auxdata_lookup[] __initconst = { |
| OF_DEV_AUXDATA("fsl,imx51-uart", MX51_UART1_BASE_ADDR, "imx21-uart.0", NULL), |
| OF_DEV_AUXDATA("fsl,imx51-uart", MX51_UART2_BASE_ADDR, "imx21-uart.1", NULL), |
| OF_DEV_AUXDATA("fsl,imx51-uart", MX51_UART3_BASE_ADDR, "imx21-uart.2", NULL), |
| OF_DEV_AUXDATA("fsl,imx51-fec", MX51_FEC_BASE_ADDR, "imx27-fec.0", NULL), |
| OF_DEV_AUXDATA("fsl,imx51-esdhc", MX51_ESDHC1_BASE_ADDR, "sdhci-esdhc-imx51.0", NULL), |
| OF_DEV_AUXDATA("fsl,imx51-esdhc", MX51_ESDHC2_BASE_ADDR, "sdhci-esdhc-imx51.1", NULL), |
| OF_DEV_AUXDATA("fsl,imx51-esdhc", MX51_ESDHC3_BASE_ADDR, "sdhci-esdhc-imx51.2", NULL), |
| OF_DEV_AUXDATA("fsl,imx51-esdhc", MX51_ESDHC4_BASE_ADDR, "sdhci-esdhc-imx51.3", NULL), |
| OF_DEV_AUXDATA("fsl,imx51-ecspi", MX51_ECSPI1_BASE_ADDR, "imx51-ecspi.0", NULL), |
| OF_DEV_AUXDATA("fsl,imx51-ecspi", MX51_ECSPI2_BASE_ADDR, "imx51-ecspi.1", NULL), |
| OF_DEV_AUXDATA("fsl,imx51-cspi", MX51_CSPI_BASE_ADDR, "imx35-cspi.0", NULL), |
| OF_DEV_AUXDATA("fsl,imx51-i2c", MX51_I2C1_BASE_ADDR, "imx-i2c.0", NULL), |
| OF_DEV_AUXDATA("fsl,imx51-i2c", MX51_I2C2_BASE_ADDR, "imx-i2c.1", NULL), |
| OF_DEV_AUXDATA("fsl,imx51-sdma", MX51_SDMA_BASE_ADDR, "imx35-sdma", NULL), |
| OF_DEV_AUXDATA("fsl,imx51-wdt", MX51_WDOG1_BASE_ADDR, "imx2-wdt.0", NULL), |
| { /* sentinel */ } |
| }; |
| |
| static int __init imx51_tzic_add_irq_domain(struct device_node *np, |
| struct device_node *interrupt_parent) |
| { |
| irq_domain_add_simple(np, 0); |
| return 0; |
| } |
| |
| static int __init imx51_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 - |
| 32 * 4; /* imx51 gets 4 gpio ports */ |
| |
| irq_domain_add_simple(np, gpio_irq_base); |
| gpio_irq_base += 32; |
| |
| return 0; |
| } |
| |
| static const struct of_device_id imx51_irq_match[] __initconst = { |
| { .compatible = "fsl,imx51-tzic", .data = imx51_tzic_add_irq_domain, }, |
| { .compatible = "fsl,imx51-gpio", .data = imx51_gpio_add_irq_domain, }, |
| { /* sentinel */ } |
| }; |
| |
| static const struct of_device_id imx51_iomuxc_of_match[] __initconst = { |
| { .compatible = "fsl,imx51-iomuxc-babbage", .data = imx51_babbage_common_init, }, |
| { /* sentinel */ } |
| }; |
| |
| static void __init imx51_dt_init(void) |
| { |
| struct device_node *node; |
| const struct of_device_id *of_id; |
| void (*func)(void); |
| |
| of_irq_init(imx51_irq_match); |
| |
| node = of_find_matching_node(NULL, imx51_iomuxc_of_match); |
| if (node) { |
| of_id = of_match_node(imx51_iomuxc_of_match, node); |
| func = of_id->data; |
| func(); |
| of_node_put(node); |
| } |
| |
| of_platform_populate(NULL, of_default_bus_match_table, |
| imx51_auxdata_lookup, NULL); |
| } |
| |
| static void __init imx51_timer_init(void) |
| { |
| mx51_clocks_init_dt(); |
| } |
| |
| static struct sys_timer imx51_timer = { |
| .init = imx51_timer_init, |
| }; |
| |
| static const char *imx51_dt_board_compat[] __initdata = { |
| "fsl,imx51-babbage", |
| NULL |
| }; |
| |
| DT_MACHINE_START(IMX51_DT, "Freescale i.MX51 (Device Tree Support)") |
| .map_io = mx51_map_io, |
| .init_early = imx51_init_early, |
| .init_irq = mx51_init_irq, |
| .handle_irq = imx51_handle_irq, |
| .timer = &imx51_timer, |
| .init_machine = imx51_dt_init, |
| .dt_compat = imx51_dt_board_compat, |
| MACHINE_END |