LXR linux/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
  41static 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
  48static struct smc91x_platdata smc91x_platdata = {
  49        .flags = SMC91X_USE_16BIT | SMC91X_USE_8BIT | SMC91X_NOWAIT,
  50};
  51
  52static 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
  62static 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 */
  72static 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
  78static 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
  95static 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
 102static 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
 112static 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
 140MACHINE_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,
 148MACHINE_END
 149