1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * arch/arm/mach-ixp4xx/avila-setup.c
4 *
5 * Gateworks Avila board-setup
6 *
7 * Author: Michael-Luke Jones <mlj28@cam.ac.uk>
8 *
9 * Based on ixdp-setup.c
10 * Copyright (C) 2003-2005 MontaVista Software, Inc.
11 *
12 * Author: Deepak Saxena <dsaxena@plexity.net>
13 */
14
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/device.h>
18 #include <linux/serial.h>
19 #include <linux/tty.h>
20 #include <linux/serial_8250.h>
21 #include <linux/gpio/machine.h>
22 #include <asm/types.h>
23 #include <asm/setup.h>
24 #include <asm/memory.h>
25 #include <mach/hardware.h>
26 #include <asm/mach-types.h>
27 #include <asm/irq.h>
28 #include <asm/mach/arch.h>
29 #include <asm/mach/flash.h>
30
31 #define AVILA_SDA_PIN 7
32 #define AVILA_SCL_PIN 6
33
34 static struct flash_platform_data avila_flash_data = {
35 .map_name = "cfi_probe",
36 .width = 2,
37 };
38
39 static struct resource avila_flash_resource = {
40 .flags = IORESOURCE_MEM,
41 };
42
43 static struct platform_device avila_flash = {
44 .name = "IXP4XX-Flash",
45 .id = 0,
46 .dev = {
47 .platform_data = &avila_flash_data,
48 },
49 .num_resources = 1,
50 .resource = &avila_flash_resource,
51 };
52
53 static struct gpiod_lookup_table avila_i2c_gpiod_table = {
54 .dev_id = "i2c-gpio.0",
55 .table = {
56 GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", AVILA_SDA_PIN,
57 NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
58 GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", AVILA_SCL_PIN,
59 NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
60 },
61 };
62
63 static struct platform_device avila_i2c_gpio = {
64 .name = "i2c-gpio",
65 .id = 0,
66 .dev = {
67 .platform_data = NULL,
68 },
69 };
70
71 static struct resource avila_uart_resources[] = {
72 {
73 .start = IXP4XX_UART1_BASE_PHYS,
74 .end = IXP4XX_UART1_BASE_PHYS + 0x0fff,
75 .flags = IORESOURCE_MEM
76 },
77 {
78 .start = IXP4XX_UART2_BASE_PHYS,
79 .end = IXP4XX_UART2_BASE_PHYS + 0x0fff,
80 .flags = IORESOURCE_MEM
81 }
82 };
83
84 static struct plat_serial8250_port avila_uart_data[] = {
85 {
86 .mapbase = IXP4XX_UART1_BASE_PHYS,
87 .membase = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
88 .irq = IRQ_IXP4XX_UART1,
89 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
90 .iotype = UPIO_MEM,
91 .regshift = 2,
92 .uartclk = IXP4XX_UART_XTAL,
93 },
94 {
95 .mapbase = IXP4XX_UART2_BASE_PHYS,
96 .membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
97 .irq = IRQ_IXP4XX_UART2,
98 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
99 .iotype = UPIO_MEM,
100 .regshift = 2,
101 .uartclk = IXP4XX_UART_XTAL,
102 },
103 { },
104 };
105
106 static struct platform_device avila_uart = {
107 .name = "serial8250",
108 .id = PLAT8250_DEV_PLATFORM,
109 .dev.platform_data = avila_uart_data,
110 .num_resources = 2,
111 .resource = avila_uart_resources
112 };
113
114 static struct resource avila_pata_resources[] = {
115 {
116 .flags = IORESOURCE_MEM
117 },
118 {
119 .flags = IORESOURCE_MEM,
120 },
121 {
122 .name = "intrq",
123 .start = IRQ_IXP4XX_GPIO12,
124 .end = IRQ_IXP4XX_GPIO12,
125 .flags = IORESOURCE_IRQ,
126 },
127 };
128
129 static struct ixp4xx_pata_data avila_pata_data = {
130 .cs0_bits = 0xbfff0043,
131 .cs1_bits = 0xbfff0043,
132 };
133
134 static struct platform_device avila_pata = {
135 .name = "pata_ixp4xx_cf",
136 .id = 0,
137 .dev.platform_data = &avila_pata_data,
138 .num_resources = ARRAY_SIZE(avila_pata_resources),
139 .resource = avila_pata_resources,
140 };
141
142 static struct platform_device *avila_devices[] __initdata = {
143 &avila_i2c_gpio,
144 &avila_flash,
145 &avila_uart
146 };
147
avila_init(void)148 static void __init avila_init(void)
149 {
150 ixp4xx_sys_init();
151
152 avila_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
153 avila_flash_resource.end =
154 IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
155
156 gpiod_add_lookup_table(&avila_i2c_gpiod_table);
157
158 platform_add_devices(avila_devices, ARRAY_SIZE(avila_devices));
159
160 avila_pata_resources[0].start = IXP4XX_EXP_BUS_BASE(1);
161 avila_pata_resources[0].end = IXP4XX_EXP_BUS_END(1);
162
163 avila_pata_resources[1].start = IXP4XX_EXP_BUS_BASE(2);
164 avila_pata_resources[1].end = IXP4XX_EXP_BUS_END(2);
165
166 avila_pata_data.cs0_cfg = IXP4XX_EXP_CS1;
167 avila_pata_data.cs1_cfg = IXP4XX_EXP_CS2;
168
169 platform_device_register(&avila_pata);
170
171 }
172
173 MACHINE_START(AVILA, "Gateworks Avila Network Platform")
174 /* Maintainer: Deepak Saxena <dsaxena@plexity.net> */
175 .map_io = ixp4xx_map_io,
176 .init_early = ixp4xx_init_early,
177 .init_irq = ixp4xx_init_irq,
178 .init_time = ixp4xx_timer_init,
179 .atag_offset = 0x100,
180 .init_machine = avila_init,
181 #if defined(CONFIG_PCI)
182 .dma_zone_size = SZ_64M,
183 #endif
184 .restart = ixp4xx_restart,
185 MACHINE_END
186
187 /*
188 * Loft is functionally equivalent to Avila except that it has a
189 * different number for the maximum PCI devices. The MACHINE
190 * structure below is identical to Avila except for the comment.
191 */
192 #ifdef CONFIG_MACH_LOFT
193 MACHINE_START(LOFT, "Giant Shoulder Inc Loft board")
194 /* Maintainer: Tom Billman <kernel@giantshoulderinc.com> */
195 .map_io = ixp4xx_map_io,
196 .init_early = ixp4xx_init_early,
197 .init_irq = ixp4xx_init_irq,
198 .init_time = ixp4xx_timer_init,
199 .atag_offset = 0x100,
200 .init_machine = avila_init,
201 #if defined(CONFIG_PCI)
202 .dma_zone_size = SZ_64M,
203 #endif
204 .restart = ixp4xx_restart,
205 MACHINE_END
206 #endif
207
208
