Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[sfrench/cifs-2.6.git] / arch / arm / mach-sa1100 / pleb.c
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * linux/arch/arm/mach-sa1100/pleb.c
4  */
5
6 #include <linux/init.h>
7 #include <linux/kernel.h>
8 #include <linux/tty.h>
9 #include <linux/ioport.h>
10 #include <linux/platform_data/sa11x0-serial.h>
11 #include <linux/platform_device.h>
12 #include <linux/irq.h>
13 #include <linux/io.h>
14 #include <linux/mtd/partitions.h>
15 #include <linux/smc91x.h>
16
17 #include <mach/hardware.h>
18 #include <asm/setup.h>
19 #include <asm/mach-types.h>
20
21 #include <asm/mach/arch.h>
22 #include <asm/mach/map.h>
23 #include <asm/mach/flash.h>
24 #include <mach/irqs.h>
25
26 #include "generic.h"
27
28
29 /*
30  * Ethernet IRQ mappings
31  */
32
33 #define PLEB_ETH0_P             (0x20000300)    /* Ethernet 0 in PCMCIA0 IO */
34 #define PLEB_ETH0_V             (0xf6000300)
35
36 #define GPIO_ETH0_IRQ           GPIO_GPIO(21)
37 #define GPIO_ETH0_EN            GPIO_GPIO(26)
38
39 #define IRQ_GPIO_ETH0_IRQ       IRQ_GPIO21
40
41 static struct resource smc91x_resources[] = {
42         [0] = DEFINE_RES_MEM(PLEB_ETH0_P, 0x04000000),
43 #if 0 /* Autoprobe instead, to get rising/falling edge characteristic right */
44         [1] = DEFINE_RES_IRQ(IRQ_GPIO_ETH0_IRQ),
45 #endif
46 };
47
48 static struct smc91x_platdata smc91x_platdata = {
49         .flags = SMC91X_USE_16BIT | SMC91X_USE_8BIT | SMC91X_NOWAIT,
50 };
51
52 static struct platform_device smc91x_device = {
53         .name           = "smc91x",
54         .id             = 0,
55         .num_resources  = ARRAY_SIZE(smc91x_resources),
56         .resource       = smc91x_resources,
57         .dev = {
58                 .platform_data  = &smc91x_platdata,
59         },
60 };
61
62 static struct platform_device *devices[] __initdata = {
63         &smc91x_device,
64 };
65
66
67 /*
68  * Pleb's memory map
69  * has flash memory (typically 4 or 8 meg) selected by
70  * the two SA1100 lowest chip select outputs.
71  */
72 static struct resource pleb_flash_resources[] = {
73         [0] = DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_8M),
74         [1] = DEFINE_RES_MEM(SA1100_CS1_PHYS, SZ_8M),
75 };
76
77
78 static struct mtd_partition pleb_partitions[] = {
79         {
80                 .name           = "blob",
81                 .offset         = 0,
82                 .size           = 0x00020000,
83         }, {
84                 .name           = "kernel",
85                 .offset         = MTDPART_OFS_APPEND,
86                 .size           = 0x000e0000,
87         }, {
88                 .name           = "rootfs",
89                 .offset         = MTDPART_OFS_APPEND,
90                 .size           = 0x00300000,
91         }
92 };
93
94
95 static struct flash_platform_data pleb_flash_data = {
96         .map_name = "cfi_probe",
97         .parts = pleb_partitions,
98         .nr_parts = ARRAY_SIZE(pleb_partitions),
99 };
100
101
102 static void __init pleb_init(void)
103 {
104         sa11x0_register_mtd(&pleb_flash_data, pleb_flash_resources,
105                               ARRAY_SIZE(pleb_flash_resources));
106
107
108         platform_add_devices(devices, ARRAY_SIZE(devices));
109 }
110
111
112 static void __init pleb_map_io(void)
113 {
114         sa1100_map_io();
115
116         sa1100_register_uart(0, 3);
117         sa1100_register_uart(1, 1);
118
119         GAFR |= (GPIO_UART_TXD | GPIO_UART_RXD);
120         GPDR |= GPIO_UART_TXD;
121         GPDR &= ~GPIO_UART_RXD;
122         PPAR |= PPAR_UPR;
123
124         /*
125          * Fix expansion memory timing for network card
126          */
127         MECR = ((2<<10) | (2<<5) | (2<<0));
128
129         /*
130          * Enable the SMC ethernet controller
131          */
132         GPDR |= GPIO_ETH0_EN;   /* set to output */
133         GPCR  = GPIO_ETH0_EN;   /* clear MCLK (enable smc) */
134
135         GPDR &= ~GPIO_ETH0_IRQ;
136
137         irq_set_irq_type(GPIO_ETH0_IRQ, IRQ_TYPE_EDGE_FALLING);
138 }
139
140 MACHINE_START(PLEB, "PLEB")
141         .map_io         = pleb_map_io,
142         .nr_irqs        = SA1100_NR_IRQS,
143         .init_irq       = sa1100_init_irq,
144         .init_time      = sa1100_timer_init,
145         .init_machine   = pleb_init,
146         .init_late      = sa11x0_init_late,
147         .restart        = sa11x0_restart,
148 MACHINE_END