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73d2b4cd SG |
1 | /* |
2 | * Copyright 2011 Freescale Semiconductor, Inc. All Rights Reserved. | |
3 | * Copyright 2011 Linaro Ltd. | |
4 | * | |
5 | * The code contained herein is licensed under the GNU General Public | |
6 | * License. You may obtain a copy of the GNU General Public License | |
7 | * Version 2 or later at the following locations: | |
8 | * | |
9 | * http://www.opensource.org/licenses/gpl-license.html | |
10 | * http://www.gnu.org/copyleft/gpl.html | |
11 | */ | |
12 | ||
13 | #include <linux/io.h> | |
14 | #include <linux/irq.h> | |
15 | #include <linux/irqdomain.h> | |
16 | #include <linux/of_irq.h> | |
17 | #include <linux/of_platform.h> | |
18 | #include <asm/mach/arch.h> | |
19 | #include <asm/mach/time.h> | |
20 | #include <mach/common.h> | |
21 | #include <mach/mx53.h> | |
22 | ||
23 | /* | |
24 | * Lookup table for attaching a specific name and platform_data pointer to | |
25 | * devices as they get created by of_platform_populate(). Ideally this table | |
26 | * would not exist, but the current clock implementation depends on some devices | |
27 | * having a specific name. | |
28 | */ | |
29 | static const struct of_dev_auxdata imx53_auxdata_lookup[] __initconst = { | |
30 | OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART1_BASE_ADDR, "imx21-uart.0", NULL), | |
31 | OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART2_BASE_ADDR, "imx21-uart.1", NULL), | |
32 | OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART3_BASE_ADDR, "imx21-uart.2", NULL), | |
33 | OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART4_BASE_ADDR, "imx21-uart.3", NULL), | |
34 | OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART5_BASE_ADDR, "imx21-uart.4", NULL), | |
35 | OF_DEV_AUXDATA("fsl,imx53-fec", MX53_FEC_BASE_ADDR, "imx25-fec.0", NULL), | |
36 | OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC1_BASE_ADDR, "sdhci-esdhc-imx53.0", NULL), | |
37 | OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC2_BASE_ADDR, "sdhci-esdhc-imx53.1", NULL), | |
38 | OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC3_BASE_ADDR, "sdhci-esdhc-imx53.2", NULL), | |
39 | OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC4_BASE_ADDR, "sdhci-esdhc-imx53.3", NULL), | |
40 | OF_DEV_AUXDATA("fsl,imx53-ecspi", MX53_ECSPI1_BASE_ADDR, "imx51-ecspi.0", NULL), | |
41 | OF_DEV_AUXDATA("fsl,imx53-ecspi", MX53_ECSPI2_BASE_ADDR, "imx51-ecspi.1", NULL), | |
42 | OF_DEV_AUXDATA("fsl,imx53-cspi", MX53_CSPI_BASE_ADDR, "imx35-cspi.0", NULL), | |
43 | OF_DEV_AUXDATA("fsl,imx53-i2c", MX53_I2C1_BASE_ADDR, "imx-i2c.0", NULL), | |
44 | OF_DEV_AUXDATA("fsl,imx53-i2c", MX53_I2C2_BASE_ADDR, "imx-i2c.1", NULL), | |
45 | OF_DEV_AUXDATA("fsl,imx53-i2c", MX53_I2C3_BASE_ADDR, "imx-i2c.2", NULL), | |
46 | OF_DEV_AUXDATA("fsl,imx53-sdma", MX53_SDMA_BASE_ADDR, "imx35-sdma", NULL), | |
47 | OF_DEV_AUXDATA("fsl,imx53-wdt", MX53_WDOG1_BASE_ADDR, "imx2-wdt.0", NULL), | |
48 | { /* sentinel */ } | |
49 | }; | |
50 | ||
2a3267a4 | 51 | static int __init imx53_tzic_add_irq_domain(struct device_node *np, |
73d2b4cd SG |
52 | struct device_node *interrupt_parent) |
53 | { | |
54 | irq_domain_add_simple(np, 0); | |
2a3267a4 | 55 | return 0; |
73d2b4cd SG |
56 | } |
57 | ||
2a3267a4 | 58 | static int __init imx53_gpio_add_irq_domain(struct device_node *np, |
73d2b4cd SG |
59 | struct device_node *interrupt_parent) |
60 | { | |
04aafd71 | 61 | static int gpio_irq_base = MXC_GPIO_IRQ_START + ARCH_NR_GPIOS; |
73d2b4cd | 62 | |
04aafd71 | 63 | gpio_irq_base -= 32; |
73d2b4cd | 64 | irq_domain_add_simple(np, gpio_irq_base); |
2a3267a4 SG |
65 | |
66 | return 0; | |
73d2b4cd SG |
67 | } |
68 | ||
69 | static const struct of_device_id imx53_irq_match[] __initconst = { | |
70 | { .compatible = "fsl,imx53-tzic", .data = imx53_tzic_add_irq_domain, }, | |
71 | { .compatible = "fsl,imx53-gpio", .data = imx53_gpio_add_irq_domain, }, | |
72 | { /* sentinel */ } | |
73 | }; | |
74 | ||
75 | static const struct of_device_id imx53_iomuxc_of_match[] __initconst = { | |
76 | { .compatible = "fsl,imx53-iomuxc-ard", .data = imx53_ard_common_init, }, | |
77 | { .compatible = "fsl,imx53-iomuxc-evk", .data = imx53_evk_common_init, }, | |
78 | { .compatible = "fsl,imx53-iomuxc-qsb", .data = imx53_qsb_common_init, }, | |
79 | { .compatible = "fsl,imx53-iomuxc-smd", .data = imx53_smd_common_init, }, | |
80 | { /* sentinel */ } | |
81 | }; | |
82 | ||
83 | static void __init imx53_dt_init(void) | |
84 | { | |
85 | struct device_node *node; | |
86 | const struct of_device_id *of_id; | |
87 | void (*func)(void); | |
88 | ||
89 | of_irq_init(imx53_irq_match); | |
90 | ||
91 | node = of_find_matching_node(NULL, imx53_iomuxc_of_match); | |
92 | if (node) { | |
93 | of_id = of_match_node(imx53_iomuxc_of_match, node); | |
94 | func = of_id->data; | |
95 | func(); | |
96 | of_node_put(node); | |
97 | } | |
98 | ||
99 | of_platform_populate(NULL, of_default_bus_match_table, | |
100 | imx53_auxdata_lookup, NULL); | |
101 | } | |
102 | ||
103 | static void __init imx53_timer_init(void) | |
104 | { | |
105 | mx53_clocks_init_dt(); | |
106 | } | |
107 | ||
108 | static struct sys_timer imx53_timer = { | |
109 | .init = imx53_timer_init, | |
110 | }; | |
111 | ||
112 | static const char *imx53_dt_board_compat[] __initdata = { | |
113 | "fsl,imx53-ard", | |
114 | "fsl,imx53-evk", | |
115 | "fsl,imx53-qsb", | |
116 | "fsl,imx53-smd", | |
117 | NULL | |
118 | }; | |
119 | ||
120 | DT_MACHINE_START(IMX53_DT, "Freescale i.MX53 (Device Tree Support)") | |
121 | .map_io = mx53_map_io, | |
122 | .init_early = imx53_init_early, | |
123 | .init_irq = mx53_init_irq, | |
124 | .handle_irq = imx53_handle_irq, | |
125 | .timer = &imx53_timer, | |
126 | .init_machine = imx53_dt_init, | |
127 | .dt_compat = imx53_dt_board_compat, | |
65ea7884 | 128 | .restart = mxc_restart, |
73d2b4cd | 129 | MACHINE_END |