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7#include <linux/kernel.h>
8#include <linux/gpio.h>
9#include <linux/init.h>
10#include <linux/irq.h>
11#include <linux/phy.h>
12#include <linux/platform_device.h>
13#include <linux/serial.h>
14#include <linux/serial_8250.h>
15
16#include <variant/hardware.h>
17#include <variant/dmac.h>
18
19#include <platform/gpio.h>
20
21#define GPIO3_INTNUM 3
22#define UART_INTNUM 4
23#define GMAC_INTNUM 5
24
25static const signed char gpio3_irq_mappings[] = {
26 S6_INTC_GPIO(3),
27 -1
28};
29
30static const signed char uart_irq_mappings[] = {
31 S6_INTC_UART(0),
32 S6_INTC_UART(1),
33 -1,
34};
35
36static const signed char gmac_irq_mappings[] = {
37 S6_INTC_GMAC_STAT,
38 S6_INTC_GMAC_ERR,
39 S6_INTC_DMA_HOSTTERMCNT(0),
40 S6_INTC_DMA_HOSTTERMCNT(1),
41 -1
42};
43
44const signed char *platform_irq_mappings[NR_IRQS] = {
45 [GPIO3_INTNUM] = gpio3_irq_mappings,
46 [UART_INTNUM] = uart_irq_mappings,
47 [GMAC_INTNUM] = gmac_irq_mappings,
48};
49
50static struct plat_serial8250_port serial_platform_data[] = {
51 {
52 .membase = (void *)S6_REG_UART + 0x0000,
53 .mapbase = S6_REG_UART + 0x0000,
54 .irq = UART_INTNUM,
55 .uartclk = S6_SCLK,
56 .regshift = 2,
57 .iotype = SERIAL_IO_MEM,
58 .flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST,
59 },
60 {
61 .membase = (void *)S6_REG_UART + 0x1000,
62 .mapbase = S6_REG_UART + 0x1000,
63 .irq = UART_INTNUM,
64 .uartclk = S6_SCLK,
65 .regshift = 2,
66 .iotype = SERIAL_IO_MEM,
67 .flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST,
68 },
69 { },
70};
71
72static struct resource s6_gmac_resource[] = {
73 {
74 .name = "mem",
75 .start = (resource_size_t)S6_REG_GMAC,
76 .end = (resource_size_t)S6_REG_GMAC + 0x10000 - 1,
77 .flags = IORESOURCE_MEM,
78 },
79 {
80 .name = "dma",
81 .start = (resource_size_t)
82 DMA_CHNL(S6_REG_HIFDMA, S6_HIFDMA_GMACTX),
83 .end = (resource_size_t)
84 DMA_CHNL(S6_REG_HIFDMA, S6_HIFDMA_GMACTX) + 0x100 - 1,
85 .flags = IORESOURCE_DMA,
86 },
87 {
88 .name = "dma",
89 .start = (resource_size_t)
90 DMA_CHNL(S6_REG_HIFDMA, S6_HIFDMA_GMACRX),
91 .end = (resource_size_t)
92 DMA_CHNL(S6_REG_HIFDMA, S6_HIFDMA_GMACRX) + 0x100 - 1,
93 .flags = IORESOURCE_DMA,
94 },
95 {
96 .name = "io",
97 .start = (resource_size_t)S6_MEM_GMAC,
98 .end = (resource_size_t)S6_MEM_GMAC + 0x2000000 - 1,
99 .flags = IORESOURCE_IO,
100 },
101 {
102 .name = "irq",
103 .start = (resource_size_t)GMAC_INTNUM,
104 .flags = IORESOURCE_IRQ,
105 },
106 {
107 .name = "irq",
108 .start = (resource_size_t)PHY_POLL,
109 .flags = IORESOURCE_IRQ,
110 },
111};
112
113static int __init prepare_phy_irq(int pin)
114{
115 int irq;
116 if (gpio_request(pin, "s6gmac_phy") < 0)
117 goto fail;
118 if (gpio_direction_input(pin) < 0)
119 goto free;
120 irq = gpio_to_irq(pin);
121 if (irq < 0)
122 goto free;
123 if (irq_set_irq_type(irq, IRQ_TYPE_LEVEL_LOW) < 0)
124 goto free;
125 return irq;
126free:
127 gpio_free(pin);
128fail:
129 return PHY_POLL;
130}
131
132static struct platform_device platform_devices[] = {
133 {
134 .name = "serial8250",
135 .id = PLAT8250_DEV_PLATFORM,
136 .dev = {
137 .platform_data = serial_platform_data,
138 },
139 },
140 {
141 .name = "s6gmac",
142 .id = 0,
143 .resource = s6_gmac_resource,
144 .num_resources = ARRAY_SIZE(s6_gmac_resource),
145 },
146 {
147 I2C_BOARD_INFO("m41t62", S6I2C_ADDR_M41T62),
148 },
149};
150
151static int __init device_init(void)
152{
153 int i;
154
155 s6_gmac_resource[5].start = prepare_phy_irq(GPIO_PHY_IRQ);
156
157 for (i = 0; i < ARRAY_SIZE(platform_devices); i++)
158 platform_device_register(&platform_devices[i]);
159 return 0;
160}
161arch_initcall_sync(device_init);
162
