1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * linux/arch/arm/mach-sa1100/shannon.c
4 */
5
6 #include <linux/init.h>
7 #include <linux/device.h>
8 #include <linux/gpio/machine.h>
9 #include <linux/kernel.h>
10 #include <linux/platform_data/sa11x0-serial.h>
11 #include <linux/tty.h>
12 #include <linux/mtd/mtd.h>
13 #include <linux/mtd/partitions.h>
14 #include <linux/regulator/fixed.h>
15 #include <linux/regulator/machine.h>
16
17 #include <video/sa1100fb.h>
18
19 #include <mach/hardware.h>
20 #include <asm/mach-types.h>
21 #include <asm/setup.h>
22
23 #include <asm/mach/arch.h>
24 #include <asm/mach/flash.h>
25 #include <asm/mach/map.h>
26 #include <linux/platform_data/mfd-mcp-sa11x0.h>
27 #include <mach/shannon.h>
28 #include <mach/irqs.h>
29
30 #include "generic.h"
31
32 static struct mtd_partition shannon_partitions[] = {
33 {
34 .name = "BLOB boot loader",
35 .offset = 0,
36 .size = 0x20000
37 },
38 {
39 .name = "kernel",
40 .offset = MTDPART_OFS_APPEND,
41 .size = 0xe0000
42 },
43 {
44 .name = "initrd",
45 .offset = MTDPART_OFS_APPEND,
46 .size = MTDPART_SIZ_FULL
47 }
48 };
49
50 static struct flash_platform_data shannon_flash_data = {
51 .map_name = "cfi_probe",
52 .parts = shannon_partitions,
53 .nr_parts = ARRAY_SIZE(shannon_partitions),
54 };
55
56 static struct resource shannon_flash_resource =
57 DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_4M);
58
59 static struct mcp_plat_data shannon_mcp_data = {
60 .mccr0 = MCCR0_ADM,
61 .sclk_rate = 11981000,
62 };
63
64 static struct sa1100fb_mach_info shannon_lcd_info = {
65 .pixclock = 152500, .bpp = 8,
66 .xres = 640, .yres = 480,
67
68 .hsync_len = 4, .vsync_len = 3,
69 .left_margin = 2, .upper_margin = 0,
70 .right_margin = 1, .lower_margin = 0,
71
72 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
73
74 .lccr0 = LCCR0_Color | LCCR0_Dual | LCCR0_Pas,
75 .lccr3 = LCCR3_ACBsDiv(512),
76 };
77
78 static struct gpiod_lookup_table shannon_pcmcia0_gpio_table = {
79 .dev_id = "sa11x0-pcmcia.0",
80 .table = {
81 GPIO_LOOKUP("gpio", 24, "detect", GPIO_ACTIVE_LOW),
82 GPIO_LOOKUP("gpio", 26, "ready", GPIO_ACTIVE_HIGH),
83 { },
84 },
85 };
86
87 static struct gpiod_lookup_table shannon_pcmcia1_gpio_table = {
88 .dev_id = "sa11x0-pcmcia.1",
89 .table = {
90 GPIO_LOOKUP("gpio", 25, "detect", GPIO_ACTIVE_LOW),
91 GPIO_LOOKUP("gpio", 27, "ready", GPIO_ACTIVE_HIGH),
92 { },
93 },
94 };
95
96 static struct regulator_consumer_supply shannon_cf_vcc_consumers[] = {
97 REGULATOR_SUPPLY("vcc", "sa11x0-pcmcia.0"),
98 REGULATOR_SUPPLY("vcc", "sa11x0-pcmcia.1"),
99 };
100
101 static struct fixed_voltage_config shannon_cf_vcc_pdata __initdata = {
102 .supply_name = "cf-power",
103 .microvolts = 3300000,
104 .enabled_at_boot = 1,
105 };
106
107 static struct gpiod_lookup_table shannon_display_gpio_table = {
108 .dev_id = "sa11x0-fb",
109 .table = {
110 GPIO_LOOKUP("gpio", 22, "shannon-lcden", GPIO_ACTIVE_HIGH),
111 { },
112 },
113 };
114
shannon_init(void)115 static void __init shannon_init(void)
116 {
117 sa11x0_register_fixed_regulator(0, &shannon_cf_vcc_pdata,
118 shannon_cf_vcc_consumers,
119 ARRAY_SIZE(shannon_cf_vcc_consumers),
120 false);
121 sa11x0_register_pcmcia(0, &shannon_pcmcia0_gpio_table);
122 sa11x0_register_pcmcia(1, &shannon_pcmcia1_gpio_table);
123 sa11x0_ppc_configure_mcp();
124 gpiod_add_lookup_table(&shannon_display_gpio_table);
125 sa11x0_register_lcd(&shannon_lcd_info);
126 sa11x0_register_mtd(&shannon_flash_data, &shannon_flash_resource, 1);
127 sa11x0_register_mcp(&shannon_mcp_data);
128 }
129
shannon_map_io(void)130 static void __init shannon_map_io(void)
131 {
132 sa1100_map_io();
133
134 sa1100_register_uart(0, 3);
135 sa1100_register_uart(1, 1);
136
137 Ser1SDCR0 |= SDCR0_SUS;
138 GAFR |= (GPIO_UART_TXD | GPIO_UART_RXD);
139 GPDR |= GPIO_UART_TXD | SHANNON_GPIO_CODEC_RESET;
140 GPDR &= ~GPIO_UART_RXD;
141 PPAR |= PPAR_UPR;
142
143 /* reset the codec */
144 GPCR = SHANNON_GPIO_CODEC_RESET;
145 GPSR = SHANNON_GPIO_CODEC_RESET;
146 }
147
148 MACHINE_START(SHANNON, "Shannon (AKA: Tuxscreen)")
149 .atag_offset = 0x100,
150 .map_io = shannon_map_io,
151 .nr_irqs = SA1100_NR_IRQS,
152 .init_irq = sa1100_init_irq,
153 .init_time = sa1100_timer_init,
154 .init_machine = shannon_init,
155 .init_late = sa11x0_init_late,
156 .restart = sa11x0_restart,
157 MACHINE_END
158